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[J-linux.git] / drivers / media / i2c / adv7842.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * adv7842 - Analog Devices ADV7842 video decoder driver
4  *
5  * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6  */
7
8 /*
9  * References (c = chapter, p = page):
10  * REF_01 - Analog devices, ADV7842,
11  *              Register Settings Recommendations, Rev. 1.9, April 2011
12  * REF_02 - Analog devices, Software User Guide, UG-206,
13  *              ADV7842 I2C Register Maps, Rev. 0, November 2010
14  * REF_03 - Analog devices, Hardware User Guide, UG-214,
15  *              ADV7842 Fast Switching 2:1 HDMI 1.4 Receiver with 3D-Comb
16  *              Decoder and Digitizer , Rev. 0, January 2011
17  */
18
19
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/i2c.h>
24 #include <linux/delay.h>
25 #include <linux/videodev2.h>
26 #include <linux/workqueue.h>
27 #include <linux/v4l2-dv-timings.h>
28 #include <linux/hdmi.h>
29 #include <media/cec.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-event.h>
32 #include <media/v4l2-ctrls.h>
33 #include <media/v4l2-dv-timings.h>
34 #include <media/i2c/adv7842.h>
35
36 static int debug;
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug, "debug level (0-2)");
39
40 MODULE_DESCRIPTION("Analog Devices ADV7842 video decoder driver");
41 MODULE_AUTHOR("Hans Verkuil <[email protected]>");
42 MODULE_AUTHOR("Martin Bugge <[email protected]>");
43 MODULE_LICENSE("GPL");
44
45 /* ADV7842 system clock frequency */
46 #define ADV7842_fsc (28636360)
47
48 #define ADV7842_RGB_OUT                                 (1 << 1)
49
50 #define ADV7842_OP_FORMAT_SEL_8BIT                      (0 << 0)
51 #define ADV7842_OP_FORMAT_SEL_10BIT                     (1 << 0)
52 #define ADV7842_OP_FORMAT_SEL_12BIT                     (2 << 0)
53
54 #define ADV7842_OP_MODE_SEL_SDR_422                     (0 << 5)
55 #define ADV7842_OP_MODE_SEL_DDR_422                     (1 << 5)
56 #define ADV7842_OP_MODE_SEL_SDR_444                     (2 << 5)
57 #define ADV7842_OP_MODE_SEL_DDR_444                     (3 << 5)
58 #define ADV7842_OP_MODE_SEL_SDR_422_2X                  (4 << 5)
59 #define ADV7842_OP_MODE_SEL_ADI_CM                      (5 << 5)
60
61 #define ADV7842_OP_CH_SEL_GBR                           (0 << 5)
62 #define ADV7842_OP_CH_SEL_GRB                           (1 << 5)
63 #define ADV7842_OP_CH_SEL_BGR                           (2 << 5)
64 #define ADV7842_OP_CH_SEL_RGB                           (3 << 5)
65 #define ADV7842_OP_CH_SEL_BRG                           (4 << 5)
66 #define ADV7842_OP_CH_SEL_RBG                           (5 << 5)
67
68 #define ADV7842_OP_SWAP_CB_CR                           (1 << 0)
69
70 #define ADV7842_MAX_ADDRS (3)
71
72 /*
73 **********************************************************************
74 *
75 *  Arrays with configuration parameters for the ADV7842
76 *
77 **********************************************************************
78 */
79
80 struct adv7842_format_info {
81         u32 code;
82         u8 op_ch_sel;
83         bool rgb_out;
84         bool swap_cb_cr;
85         u8 op_format_sel;
86 };
87
88 struct adv7842_state {
89         struct adv7842_platform_data pdata;
90         struct v4l2_subdev sd;
91         struct media_pad pads[ADV7842_PAD_SOURCE + 1];
92         struct v4l2_ctrl_handler hdl;
93         enum adv7842_mode mode;
94         struct v4l2_dv_timings timings;
95         enum adv7842_vid_std_select vid_std_select;
96
97         const struct adv7842_format_info *format;
98
99         v4l2_std_id norm;
100         struct {
101                 u8 edid[512];
102                 u32 blocks;
103                 u32 present;
104         } hdmi_edid;
105         struct {
106                 u8 edid[128];
107                 u32 blocks;
108                 u32 present;
109         } vga_edid;
110         struct v4l2_fract aspect_ratio;
111         u32 rgb_quantization_range;
112         bool is_cea_format;
113         struct delayed_work delayed_work_enable_hotplug;
114         bool restart_stdi_once;
115         bool hdmi_port_a;
116
117         struct dentry *debugfs_dir;
118         struct v4l2_debugfs_if *infoframes;
119
120         /* i2c clients */
121         struct i2c_client *i2c_sdp_io;
122         struct i2c_client *i2c_sdp;
123         struct i2c_client *i2c_cp;
124         struct i2c_client *i2c_vdp;
125         struct i2c_client *i2c_afe;
126         struct i2c_client *i2c_hdmi;
127         struct i2c_client *i2c_repeater;
128         struct i2c_client *i2c_edid;
129         struct i2c_client *i2c_infoframe;
130         struct i2c_client *i2c_cec;
131         struct i2c_client *i2c_avlink;
132
133         /* controls */
134         struct v4l2_ctrl *detect_tx_5v_ctrl;
135         struct v4l2_ctrl *analog_sampling_phase_ctrl;
136         struct v4l2_ctrl *free_run_color_ctrl_manual;
137         struct v4l2_ctrl *free_run_color_ctrl;
138         struct v4l2_ctrl *rgb_quantization_range_ctrl;
139
140         struct cec_adapter *cec_adap;
141         u8   cec_addr[ADV7842_MAX_ADDRS];
142         u8   cec_valid_addrs;
143         bool cec_enabled_adap;
144 };
145
146 /* Unsupported timings. This device cannot support 720p30. */
147 static const struct v4l2_dv_timings adv7842_timings_exceptions[] = {
148         V4L2_DV_BT_CEA_1280X720P30,
149         { }
150 };
151
152 static bool adv7842_check_dv_timings(const struct v4l2_dv_timings *t, void *hdl)
153 {
154         int i;
155
156         for (i = 0; adv7842_timings_exceptions[i].bt.width; i++)
157                 if (v4l2_match_dv_timings(t, adv7842_timings_exceptions + i, 0, false))
158                         return false;
159         return true;
160 }
161
162 struct adv7842_video_standards {
163         struct v4l2_dv_timings timings;
164         u8 vid_std;
165         u8 v_freq;
166 };
167
168 /* sorted by number of lines */
169 static const struct adv7842_video_standards adv7842_prim_mode_comp[] = {
170         /* { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 }, TODO flickering */
171         { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
172         { V4L2_DV_BT_CEA_1280X720P50, 0x19, 0x01 },
173         { V4L2_DV_BT_CEA_1280X720P60, 0x19, 0x00 },
174         { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
175         { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
176         { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
177         { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
178         { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
179         /* TODO add 1920x1080P60_RB (CVT timing) */
180         { },
181 };
182
183 /* sorted by number of lines */
184 static const struct adv7842_video_standards adv7842_prim_mode_gr[] = {
185         { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
186         { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
187         { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
188         { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
189         { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
190         { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
191         { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
192         { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
193         { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
194         { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
195         { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
196         { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
197         { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
198         { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
199         { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
200         { V4L2_DV_BT_DMT_1360X768P60, 0x12, 0x00 },
201         { V4L2_DV_BT_DMT_1366X768P60, 0x13, 0x00 },
202         { V4L2_DV_BT_DMT_1400X1050P60, 0x14, 0x00 },
203         { V4L2_DV_BT_DMT_1400X1050P75, 0x15, 0x00 },
204         { V4L2_DV_BT_DMT_1600X1200P60, 0x16, 0x00 }, /* TODO not tested */
205         /* TODO add 1600X1200P60_RB (not a DMT timing) */
206         { V4L2_DV_BT_DMT_1680X1050P60, 0x18, 0x00 },
207         { V4L2_DV_BT_DMT_1920X1200P60_RB, 0x19, 0x00 }, /* TODO not tested */
208         { },
209 };
210
211 /* sorted by number of lines */
212 static const struct adv7842_video_standards adv7842_prim_mode_hdmi_comp[] = {
213         { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 },
214         { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
215         { V4L2_DV_BT_CEA_1280X720P50, 0x13, 0x01 },
216         { V4L2_DV_BT_CEA_1280X720P60, 0x13, 0x00 },
217         { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
218         { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
219         { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
220         { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
221         { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
222         { },
223 };
224
225 /* sorted by number of lines */
226 static const struct adv7842_video_standards adv7842_prim_mode_hdmi_gr[] = {
227         { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
228         { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
229         { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
230         { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
231         { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
232         { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
233         { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
234         { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
235         { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
236         { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
237         { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
238         { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
239         { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
240         { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
241         { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
242         { },
243 };
244
245 static const struct v4l2_event adv7842_ev_fmt = {
246         .type = V4L2_EVENT_SOURCE_CHANGE,
247         .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
248 };
249
250 /* ----------------------------------------------------------------------- */
251
252 static inline struct adv7842_state *to_state(struct v4l2_subdev *sd)
253 {
254         return container_of(sd, struct adv7842_state, sd);
255 }
256
257 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
258 {
259         return &container_of(ctrl->handler, struct adv7842_state, hdl)->sd;
260 }
261
262 static inline unsigned htotal(const struct v4l2_bt_timings *t)
263 {
264         return V4L2_DV_BT_FRAME_WIDTH(t);
265 }
266
267 static inline unsigned vtotal(const struct v4l2_bt_timings *t)
268 {
269         return V4L2_DV_BT_FRAME_HEIGHT(t);
270 }
271
272
273 /* ----------------------------------------------------------------------- */
274
275 static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
276                                           u8 command, bool check)
277 {
278         union i2c_smbus_data data;
279
280         if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
281                             I2C_SMBUS_READ, command,
282                             I2C_SMBUS_BYTE_DATA, &data))
283                 return data.byte;
284         if (check)
285                 v4l_err(client, "error reading %02x, %02x\n",
286                         client->addr, command);
287         return -EIO;
288 }
289
290 static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
291 {
292         int i;
293
294         for (i = 0; i < 3; i++) {
295                 int ret = adv_smbus_read_byte_data_check(client, command, true);
296
297                 if (ret >= 0) {
298                         if (i)
299                                 v4l_err(client, "read ok after %d retries\n", i);
300                         return ret;
301                 }
302         }
303         v4l_err(client, "read failed\n");
304         return -EIO;
305 }
306
307 static s32 adv_smbus_write_byte_data(struct i2c_client *client,
308                                      u8 command, u8 value)
309 {
310         union i2c_smbus_data data;
311         int err;
312         int i;
313
314         data.byte = value;
315         for (i = 0; i < 3; i++) {
316                 err = i2c_smbus_xfer(client->adapter, client->addr,
317                                      client->flags,
318                                      I2C_SMBUS_WRITE, command,
319                                      I2C_SMBUS_BYTE_DATA, &data);
320                 if (!err)
321                         break;
322         }
323         if (err < 0)
324                 v4l_err(client, "error writing %02x, %02x, %02x\n",
325                         client->addr, command, value);
326         return err;
327 }
328
329 static void adv_smbus_write_byte_no_check(struct i2c_client *client,
330                                           u8 command, u8 value)
331 {
332         union i2c_smbus_data data;
333         data.byte = value;
334
335         i2c_smbus_xfer(client->adapter, client->addr,
336                        client->flags,
337                        I2C_SMBUS_WRITE, command,
338                        I2C_SMBUS_BYTE_DATA, &data);
339 }
340
341 /* ----------------------------------------------------------------------- */
342
343 static inline int io_read(struct v4l2_subdev *sd, u8 reg)
344 {
345         struct i2c_client *client = v4l2_get_subdevdata(sd);
346
347         return adv_smbus_read_byte_data(client, reg);
348 }
349
350 static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
351 {
352         struct i2c_client *client = v4l2_get_subdevdata(sd);
353
354         return adv_smbus_write_byte_data(client, reg, val);
355 }
356
357 static inline int io_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
358 {
359         return io_write(sd, reg, (io_read(sd, reg) & mask) | val);
360 }
361
362 static inline int io_write_clr_set(struct v4l2_subdev *sd,
363                                    u8 reg, u8 mask, u8 val)
364 {
365         return io_write(sd, reg, (io_read(sd, reg) & ~mask) | val);
366 }
367
368 static inline int avlink_read(struct v4l2_subdev *sd, u8 reg)
369 {
370         struct adv7842_state *state = to_state(sd);
371
372         return adv_smbus_read_byte_data(state->i2c_avlink, reg);
373 }
374
375 static inline int avlink_write(struct v4l2_subdev *sd, u8 reg, u8 val)
376 {
377         struct adv7842_state *state = to_state(sd);
378
379         return adv_smbus_write_byte_data(state->i2c_avlink, reg, val);
380 }
381
382 static inline int cec_read(struct v4l2_subdev *sd, u8 reg)
383 {
384         struct adv7842_state *state = to_state(sd);
385
386         return adv_smbus_read_byte_data(state->i2c_cec, reg);
387 }
388
389 static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
390 {
391         struct adv7842_state *state = to_state(sd);
392
393         return adv_smbus_write_byte_data(state->i2c_cec, reg, val);
394 }
395
396 static inline int cec_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
397 {
398         return cec_write(sd, reg, (cec_read(sd, reg) & ~mask) | val);
399 }
400
401 static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
402 {
403         struct adv7842_state *state = to_state(sd);
404
405         return adv_smbus_read_byte_data(state->i2c_infoframe, reg);
406 }
407
408 static inline int infoframe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
409 {
410         struct adv7842_state *state = to_state(sd);
411
412         return adv_smbus_write_byte_data(state->i2c_infoframe, reg, val);
413 }
414
415 static inline int sdp_io_read(struct v4l2_subdev *sd, u8 reg)
416 {
417         struct adv7842_state *state = to_state(sd);
418
419         return adv_smbus_read_byte_data(state->i2c_sdp_io, reg);
420 }
421
422 static inline int sdp_io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
423 {
424         struct adv7842_state *state = to_state(sd);
425
426         return adv_smbus_write_byte_data(state->i2c_sdp_io, reg, val);
427 }
428
429 static inline int sdp_io_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
430 {
431         return sdp_io_write(sd, reg, (sdp_io_read(sd, reg) & mask) | val);
432 }
433
434 static inline int sdp_read(struct v4l2_subdev *sd, u8 reg)
435 {
436         struct adv7842_state *state = to_state(sd);
437
438         return adv_smbus_read_byte_data(state->i2c_sdp, reg);
439 }
440
441 static inline int sdp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
442 {
443         struct adv7842_state *state = to_state(sd);
444
445         return adv_smbus_write_byte_data(state->i2c_sdp, reg, val);
446 }
447
448 static inline int sdp_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
449 {
450         return sdp_write(sd, reg, (sdp_read(sd, reg) & mask) | val);
451 }
452
453 static inline int afe_read(struct v4l2_subdev *sd, u8 reg)
454 {
455         struct adv7842_state *state = to_state(sd);
456
457         return adv_smbus_read_byte_data(state->i2c_afe, reg);
458 }
459
460 static inline int afe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
461 {
462         struct adv7842_state *state = to_state(sd);
463
464         return adv_smbus_write_byte_data(state->i2c_afe, reg, val);
465 }
466
467 static inline int afe_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
468 {
469         return afe_write(sd, reg, (afe_read(sd, reg) & mask) | val);
470 }
471
472 static inline int rep_read(struct v4l2_subdev *sd, u8 reg)
473 {
474         struct adv7842_state *state = to_state(sd);
475
476         return adv_smbus_read_byte_data(state->i2c_repeater, reg);
477 }
478
479 static inline int rep_write(struct v4l2_subdev *sd, u8 reg, u8 val)
480 {
481         struct adv7842_state *state = to_state(sd);
482
483         return adv_smbus_write_byte_data(state->i2c_repeater, reg, val);
484 }
485
486 static inline int rep_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
487 {
488         return rep_write(sd, reg, (rep_read(sd, reg) & mask) | val);
489 }
490
491 static inline int edid_read(struct v4l2_subdev *sd, u8 reg)
492 {
493         struct adv7842_state *state = to_state(sd);
494
495         return adv_smbus_read_byte_data(state->i2c_edid, reg);
496 }
497
498 static inline int edid_write(struct v4l2_subdev *sd, u8 reg, u8 val)
499 {
500         struct adv7842_state *state = to_state(sd);
501
502         return adv_smbus_write_byte_data(state->i2c_edid, reg, val);
503 }
504
505 static inline int hdmi_read(struct v4l2_subdev *sd, u8 reg)
506 {
507         struct adv7842_state *state = to_state(sd);
508
509         return adv_smbus_read_byte_data(state->i2c_hdmi, reg);
510 }
511
512 static inline int hdmi_write(struct v4l2_subdev *sd, u8 reg, u8 val)
513 {
514         struct adv7842_state *state = to_state(sd);
515
516         return adv_smbus_write_byte_data(state->i2c_hdmi, reg, val);
517 }
518
519 static inline int hdmi_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
520 {
521         return hdmi_write(sd, reg, (hdmi_read(sd, reg) & mask) | val);
522 }
523
524 static inline int cp_read(struct v4l2_subdev *sd, u8 reg)
525 {
526         struct adv7842_state *state = to_state(sd);
527
528         return adv_smbus_read_byte_data(state->i2c_cp, reg);
529 }
530
531 static inline int cp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
532 {
533         struct adv7842_state *state = to_state(sd);
534
535         return adv_smbus_write_byte_data(state->i2c_cp, reg, val);
536 }
537
538 static inline int cp_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
539 {
540         return cp_write(sd, reg, (cp_read(sd, reg) & mask) | val);
541 }
542
543 static inline int vdp_read(struct v4l2_subdev *sd, u8 reg)
544 {
545         struct adv7842_state *state = to_state(sd);
546
547         return adv_smbus_read_byte_data(state->i2c_vdp, reg);
548 }
549
550 static inline int vdp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
551 {
552         struct adv7842_state *state = to_state(sd);
553
554         return adv_smbus_write_byte_data(state->i2c_vdp, reg, val);
555 }
556
557 static void main_reset(struct v4l2_subdev *sd)
558 {
559         struct i2c_client *client = v4l2_get_subdevdata(sd);
560
561         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
562
563         adv_smbus_write_byte_no_check(client, 0xff, 0x80);
564
565         mdelay(5);
566 }
567
568 /* -----------------------------------------------------------------------------
569  * Format helpers
570  */
571
572 static const struct adv7842_format_info adv7842_formats[] = {
573         { MEDIA_BUS_FMT_RGB888_1X24, ADV7842_OP_CH_SEL_RGB, true, false,
574           ADV7842_OP_MODE_SEL_SDR_444 | ADV7842_OP_FORMAT_SEL_8BIT },
575         { MEDIA_BUS_FMT_YUYV8_2X8, ADV7842_OP_CH_SEL_RGB, false, false,
576           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_8BIT },
577         { MEDIA_BUS_FMT_YVYU8_2X8, ADV7842_OP_CH_SEL_RGB, false, true,
578           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_8BIT },
579         { MEDIA_BUS_FMT_YUYV10_2X10, ADV7842_OP_CH_SEL_RGB, false, false,
580           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_10BIT },
581         { MEDIA_BUS_FMT_YVYU10_2X10, ADV7842_OP_CH_SEL_RGB, false, true,
582           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_10BIT },
583         { MEDIA_BUS_FMT_YUYV12_2X12, ADV7842_OP_CH_SEL_RGB, false, false,
584           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_12BIT },
585         { MEDIA_BUS_FMT_YVYU12_2X12, ADV7842_OP_CH_SEL_RGB, false, true,
586           ADV7842_OP_MODE_SEL_SDR_422 | ADV7842_OP_FORMAT_SEL_12BIT },
587         { MEDIA_BUS_FMT_UYVY8_1X16, ADV7842_OP_CH_SEL_RBG, false, false,
588           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_8BIT },
589         { MEDIA_BUS_FMT_VYUY8_1X16, ADV7842_OP_CH_SEL_RBG, false, true,
590           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_8BIT },
591         { MEDIA_BUS_FMT_YUYV8_1X16, ADV7842_OP_CH_SEL_RGB, false, false,
592           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_8BIT },
593         { MEDIA_BUS_FMT_YVYU8_1X16, ADV7842_OP_CH_SEL_RGB, false, true,
594           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_8BIT },
595         { MEDIA_BUS_FMT_UYVY10_1X20, ADV7842_OP_CH_SEL_RBG, false, false,
596           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_10BIT },
597         { MEDIA_BUS_FMT_VYUY10_1X20, ADV7842_OP_CH_SEL_RBG, false, true,
598           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_10BIT },
599         { MEDIA_BUS_FMT_YUYV10_1X20, ADV7842_OP_CH_SEL_RGB, false, false,
600           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_10BIT },
601         { MEDIA_BUS_FMT_YVYU10_1X20, ADV7842_OP_CH_SEL_RGB, false, true,
602           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_10BIT },
603         { MEDIA_BUS_FMT_UYVY12_1X24, ADV7842_OP_CH_SEL_RBG, false, false,
604           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_12BIT },
605         { MEDIA_BUS_FMT_VYUY12_1X24, ADV7842_OP_CH_SEL_RBG, false, true,
606           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_12BIT },
607         { MEDIA_BUS_FMT_YUYV12_1X24, ADV7842_OP_CH_SEL_RGB, false, false,
608           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_12BIT },
609         { MEDIA_BUS_FMT_YVYU12_1X24, ADV7842_OP_CH_SEL_RGB, false, true,
610           ADV7842_OP_MODE_SEL_SDR_422_2X | ADV7842_OP_FORMAT_SEL_12BIT },
611 };
612
613 static const struct adv7842_format_info *
614 adv7842_format_info(struct adv7842_state *state, u32 code)
615 {
616         unsigned int i;
617
618         for (i = 0; i < ARRAY_SIZE(adv7842_formats); ++i) {
619                 if (adv7842_formats[i].code == code)
620                         return &adv7842_formats[i];
621         }
622
623         return NULL;
624 }
625
626 /* ----------------------------------------------------------------------- */
627
628 static inline bool is_analog_input(struct v4l2_subdev *sd)
629 {
630         struct adv7842_state *state = to_state(sd);
631
632         return ((state->mode == ADV7842_MODE_RGB) ||
633                 (state->mode == ADV7842_MODE_COMP));
634 }
635
636 static inline bool is_digital_input(struct v4l2_subdev *sd)
637 {
638         struct adv7842_state *state = to_state(sd);
639
640         return state->mode == ADV7842_MODE_HDMI;
641 }
642
643 static const struct v4l2_dv_timings_cap adv7842_timings_cap_analog = {
644         .type = V4L2_DV_BT_656_1120,
645         /* keep this initialization for compatibility with GCC < 4.4.6 */
646         .reserved = { 0 },
647         V4L2_INIT_BT_TIMINGS(640, 1920, 350, 1200, 25000000, 170000000,
648                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
649                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
650                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
651                         V4L2_DV_BT_CAP_CUSTOM)
652 };
653
654 static const struct v4l2_dv_timings_cap adv7842_timings_cap_digital = {
655         .type = V4L2_DV_BT_656_1120,
656         /* keep this initialization for compatibility with GCC < 4.4.6 */
657         .reserved = { 0 },
658         V4L2_INIT_BT_TIMINGS(640, 1920, 350, 1200, 25000000, 225000000,
659                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
660                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
661                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
662                         V4L2_DV_BT_CAP_CUSTOM)
663 };
664
665 static inline const struct v4l2_dv_timings_cap *
666 adv7842_get_dv_timings_cap(struct v4l2_subdev *sd)
667 {
668         return is_digital_input(sd) ? &adv7842_timings_cap_digital :
669                                       &adv7842_timings_cap_analog;
670 }
671
672 /* ----------------------------------------------------------------------- */
673
674 static u16 adv7842_read_cable_det(struct v4l2_subdev *sd)
675 {
676         u8 reg = io_read(sd, 0x6f);
677         u16 val = 0;
678
679         if (reg & 0x02)
680                 val |= 1; /* port A */
681         if (reg & 0x01)
682                 val |= 2; /* port B */
683         return val;
684 }
685
686 static void adv7842_delayed_work_enable_hotplug(struct work_struct *work)
687 {
688         struct delayed_work *dwork = to_delayed_work(work);
689         struct adv7842_state *state = container_of(dwork,
690                         struct adv7842_state, delayed_work_enable_hotplug);
691         struct v4l2_subdev *sd = &state->sd;
692         int present = state->hdmi_edid.present;
693         u8 mask = 0;
694
695         v4l2_dbg(2, debug, sd, "%s: enable hotplug on ports: 0x%x\n",
696                         __func__, present);
697
698         if (present & (0x04 << ADV7842_EDID_PORT_A))
699                 mask |= 0x20;
700         if (present & (0x04 << ADV7842_EDID_PORT_B))
701                 mask |= 0x10;
702         io_write_and_or(sd, 0x20, 0xcf, mask);
703 }
704
705 static int edid_write_vga_segment(struct v4l2_subdev *sd)
706 {
707         struct i2c_client *client = v4l2_get_subdevdata(sd);
708         struct adv7842_state *state = to_state(sd);
709         const u8 *edid = state->vga_edid.edid;
710         u32 blocks = state->vga_edid.blocks;
711         int err = 0;
712         int i;
713
714         v4l2_dbg(2, debug, sd, "%s: write EDID on VGA port\n", __func__);
715
716         if (!state->vga_edid.present)
717                 return 0;
718
719         /* HPA disable on port A and B */
720         io_write_and_or(sd, 0x20, 0xcf, 0x00);
721
722         /* Disable I2C access to internal EDID ram from VGA DDC port */
723         rep_write_and_or(sd, 0x7f, 0x7f, 0x00);
724
725         /* edid segment pointer '1' for VGA port */
726         rep_write_and_or(sd, 0x77, 0xef, 0x10);
727
728         for (i = 0; !err && i < blocks * 128; i += I2C_SMBUS_BLOCK_MAX)
729                 err = i2c_smbus_write_i2c_block_data(state->i2c_edid, i,
730                                                      I2C_SMBUS_BLOCK_MAX,
731                                                      edid + i);
732         if (err)
733                 return err;
734
735         /* Calculates the checksums and enables I2C access
736          * to internal EDID ram from VGA DDC port.
737          */
738         rep_write_and_or(sd, 0x7f, 0x7f, 0x80);
739
740         for (i = 0; i < 1000; i++) {
741                 if (rep_read(sd, 0x79) & 0x20)
742                         break;
743                 mdelay(1);
744         }
745         if (i == 1000) {
746                 v4l_err(client, "error enabling edid on VGA port\n");
747                 return -EIO;
748         }
749
750         /* enable hotplug after 200 ms */
751         schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 5);
752
753         return 0;
754 }
755
756 static int edid_write_hdmi_segment(struct v4l2_subdev *sd, u8 port)
757 {
758         struct i2c_client *client = v4l2_get_subdevdata(sd);
759         struct adv7842_state *state = to_state(sd);
760         const u8 *edid = state->hdmi_edid.edid;
761         u32 blocks = state->hdmi_edid.blocks;
762         unsigned int spa_loc;
763         u16 pa, parent_pa;
764         int err = 0;
765         int i;
766
767         v4l2_dbg(2, debug, sd, "%s: write EDID on port %c\n",
768                         __func__, (port == ADV7842_EDID_PORT_A) ? 'A' : 'B');
769
770         /* HPA disable on port A and B */
771         io_write_and_or(sd, 0x20, 0xcf, 0x00);
772
773         /* Disable I2C access to internal EDID ram from HDMI DDC ports */
774         rep_write_and_or(sd, 0x77, 0xf3, 0x00);
775
776         if (!state->hdmi_edid.present) {
777                 cec_phys_addr_invalidate(state->cec_adap);
778                 return 0;
779         }
780
781         pa = v4l2_get_edid_phys_addr(edid, blocks * 128, &spa_loc);
782         err = v4l2_phys_addr_validate(pa, &parent_pa, NULL);
783         if (err)
784                 return err;
785
786         if (!spa_loc) {
787                 /*
788                  * There is no SPA, so just set spa_loc to 128 and pa to whatever
789                  * data is there.
790                  */
791                 spa_loc = 128;
792                 pa = (edid[spa_loc] << 8) | edid[spa_loc + 1];
793         }
794
795
796         for (i = 0; !err && i < blocks * 128; i += I2C_SMBUS_BLOCK_MAX) {
797                 /* set edid segment pointer for HDMI ports */
798                 if (i % 256 == 0)
799                         rep_write_and_or(sd, 0x77, 0xef, i >= 256 ? 0x10 : 0x00);
800                 err = i2c_smbus_write_i2c_block_data(state->i2c_edid, i,
801                                                      I2C_SMBUS_BLOCK_MAX, edid + i);
802         }
803         if (err)
804                 return err;
805
806         if (port == ADV7842_EDID_PORT_A) {
807                 rep_write(sd, 0x72, pa >> 8);
808                 rep_write(sd, 0x73, pa & 0xff);
809         } else {
810                 rep_write(sd, 0x74, pa >> 8);
811                 rep_write(sd, 0x75, pa & 0xff);
812         }
813         rep_write(sd, 0x76, spa_loc & 0xff);
814         rep_write_and_or(sd, 0x77, 0xbf, (spa_loc >> 2) & 0x40);
815
816         /* Calculates the checksums and enables I2C access to internal
817          * EDID ram from HDMI DDC ports
818          */
819         rep_write_and_or(sd, 0x77, 0xf3, state->hdmi_edid.present);
820
821         for (i = 0; i < 1000; i++) {
822                 if (rep_read(sd, 0x7d) & state->hdmi_edid.present)
823                         break;
824                 mdelay(1);
825         }
826         if (i == 1000) {
827                 v4l_err(client, "error enabling edid on port %c\n",
828                                 (port == ADV7842_EDID_PORT_A) ? 'A' : 'B');
829                 return -EIO;
830         }
831         cec_s_phys_addr(state->cec_adap, parent_pa, false);
832
833         /* enable hotplug after 200 ms */
834         schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 5);
835
836         return 0;
837 }
838
839 /* ----------------------------------------------------------------------- */
840
841 #ifdef CONFIG_VIDEO_ADV_DEBUG
842 static void adv7842_inv_register(struct v4l2_subdev *sd)
843 {
844         v4l2_info(sd, "0x000-0x0ff: IO Map\n");
845         v4l2_info(sd, "0x100-0x1ff: AVLink Map\n");
846         v4l2_info(sd, "0x200-0x2ff: CEC Map\n");
847         v4l2_info(sd, "0x300-0x3ff: InfoFrame Map\n");
848         v4l2_info(sd, "0x400-0x4ff: SDP_IO Map\n");
849         v4l2_info(sd, "0x500-0x5ff: SDP Map\n");
850         v4l2_info(sd, "0x600-0x6ff: AFE Map\n");
851         v4l2_info(sd, "0x700-0x7ff: Repeater Map\n");
852         v4l2_info(sd, "0x800-0x8ff: EDID Map\n");
853         v4l2_info(sd, "0x900-0x9ff: HDMI Map\n");
854         v4l2_info(sd, "0xa00-0xaff: CP Map\n");
855         v4l2_info(sd, "0xb00-0xbff: VDP Map\n");
856 }
857
858 static int adv7842_g_register(struct v4l2_subdev *sd,
859                               struct v4l2_dbg_register *reg)
860 {
861         reg->size = 1;
862         switch (reg->reg >> 8) {
863         case 0:
864                 reg->val = io_read(sd, reg->reg & 0xff);
865                 break;
866         case 1:
867                 reg->val = avlink_read(sd, reg->reg & 0xff);
868                 break;
869         case 2:
870                 reg->val = cec_read(sd, reg->reg & 0xff);
871                 break;
872         case 3:
873                 reg->val = infoframe_read(sd, reg->reg & 0xff);
874                 break;
875         case 4:
876                 reg->val = sdp_io_read(sd, reg->reg & 0xff);
877                 break;
878         case 5:
879                 reg->val = sdp_read(sd, reg->reg & 0xff);
880                 break;
881         case 6:
882                 reg->val = afe_read(sd, reg->reg & 0xff);
883                 break;
884         case 7:
885                 reg->val = rep_read(sd, reg->reg & 0xff);
886                 break;
887         case 8:
888                 reg->val = edid_read(sd, reg->reg & 0xff);
889                 break;
890         case 9:
891                 reg->val = hdmi_read(sd, reg->reg & 0xff);
892                 break;
893         case 0xa:
894                 reg->val = cp_read(sd, reg->reg & 0xff);
895                 break;
896         case 0xb:
897                 reg->val = vdp_read(sd, reg->reg & 0xff);
898                 break;
899         default:
900                 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
901                 adv7842_inv_register(sd);
902                 break;
903         }
904         return 0;
905 }
906
907 static int adv7842_s_register(struct v4l2_subdev *sd,
908                 const struct v4l2_dbg_register *reg)
909 {
910         u8 val = reg->val & 0xff;
911
912         switch (reg->reg >> 8) {
913         case 0:
914                 io_write(sd, reg->reg & 0xff, val);
915                 break;
916         case 1:
917                 avlink_write(sd, reg->reg & 0xff, val);
918                 break;
919         case 2:
920                 cec_write(sd, reg->reg & 0xff, val);
921                 break;
922         case 3:
923                 infoframe_write(sd, reg->reg & 0xff, val);
924                 break;
925         case 4:
926                 sdp_io_write(sd, reg->reg & 0xff, val);
927                 break;
928         case 5:
929                 sdp_write(sd, reg->reg & 0xff, val);
930                 break;
931         case 6:
932                 afe_write(sd, reg->reg & 0xff, val);
933                 break;
934         case 7:
935                 rep_write(sd, reg->reg & 0xff, val);
936                 break;
937         case 8:
938                 edid_write(sd, reg->reg & 0xff, val);
939                 break;
940         case 9:
941                 hdmi_write(sd, reg->reg & 0xff, val);
942                 break;
943         case 0xa:
944                 cp_write(sd, reg->reg & 0xff, val);
945                 break;
946         case 0xb:
947                 vdp_write(sd, reg->reg & 0xff, val);
948                 break;
949         default:
950                 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
951                 adv7842_inv_register(sd);
952                 break;
953         }
954         return 0;
955 }
956 #endif
957
958 static int adv7842_s_detect_tx_5v_ctrl(struct v4l2_subdev *sd)
959 {
960         struct adv7842_state *state = to_state(sd);
961         u16 cable_det = adv7842_read_cable_det(sd);
962
963         v4l2_dbg(1, debug, sd, "%s: 0x%x\n", __func__, cable_det);
964
965         return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, cable_det);
966 }
967
968 static int find_and_set_predefined_video_timings(struct v4l2_subdev *sd,
969                 u8 prim_mode,
970                 const struct adv7842_video_standards *predef_vid_timings,
971                 const struct v4l2_dv_timings *timings)
972 {
973         int i;
974
975         for (i = 0; predef_vid_timings[i].timings.bt.width; i++) {
976                 if (!v4l2_match_dv_timings(timings, &predef_vid_timings[i].timings,
977                                   is_digital_input(sd) ? 250000 : 1000000, false))
978                         continue;
979                 /* video std */
980                 io_write(sd, 0x00, predef_vid_timings[i].vid_std);
981                 /* v_freq and prim mode */
982                 io_write(sd, 0x01, (predef_vid_timings[i].v_freq << 4) + prim_mode);
983                 return 0;
984         }
985
986         return -1;
987 }
988
989 static int configure_predefined_video_timings(struct v4l2_subdev *sd,
990                 struct v4l2_dv_timings *timings)
991 {
992         struct adv7842_state *state = to_state(sd);
993         int err;
994
995         v4l2_dbg(1, debug, sd, "%s\n", __func__);
996
997         /* reset to default values */
998         io_write(sd, 0x16, 0x43);
999         io_write(sd, 0x17, 0x5a);
1000         /* disable embedded syncs for auto graphics mode */
1001         cp_write_and_or(sd, 0x81, 0xef, 0x00);
1002         cp_write(sd, 0x26, 0x00);
1003         cp_write(sd, 0x27, 0x00);
1004         cp_write(sd, 0x28, 0x00);
1005         cp_write(sd, 0x29, 0x00);
1006         cp_write(sd, 0x8f, 0x40);
1007         cp_write(sd, 0x90, 0x00);
1008         cp_write(sd, 0xa5, 0x00);
1009         cp_write(sd, 0xa6, 0x00);
1010         cp_write(sd, 0xa7, 0x00);
1011         cp_write(sd, 0xab, 0x00);
1012         cp_write(sd, 0xac, 0x00);
1013
1014         switch (state->mode) {
1015         case ADV7842_MODE_COMP:
1016         case ADV7842_MODE_RGB:
1017                 err = find_and_set_predefined_video_timings(sd,
1018                                 0x01, adv7842_prim_mode_comp, timings);
1019                 if (err)
1020                         err = find_and_set_predefined_video_timings(sd,
1021                                         0x02, adv7842_prim_mode_gr, timings);
1022                 break;
1023         case ADV7842_MODE_HDMI:
1024                 err = find_and_set_predefined_video_timings(sd,
1025                                 0x05, adv7842_prim_mode_hdmi_comp, timings);
1026                 if (err)
1027                         err = find_and_set_predefined_video_timings(sd,
1028                                         0x06, adv7842_prim_mode_hdmi_gr, timings);
1029                 break;
1030         default:
1031                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1032                                 __func__, state->mode);
1033                 err = -1;
1034                 break;
1035         }
1036
1037
1038         return err;
1039 }
1040
1041 static void configure_custom_video_timings(struct v4l2_subdev *sd,
1042                 const struct v4l2_bt_timings *bt)
1043 {
1044         struct adv7842_state *state = to_state(sd);
1045         struct i2c_client *client = v4l2_get_subdevdata(sd);
1046         u32 width = htotal(bt);
1047         u32 height = vtotal(bt);
1048         u16 cp_start_sav = bt->hsync + bt->hbackporch - 4;
1049         u16 cp_start_eav = width - bt->hfrontporch;
1050         u16 cp_start_vbi = height - bt->vfrontporch + 1;
1051         u16 cp_end_vbi = bt->vsync + bt->vbackporch + 1;
1052         u16 ch1_fr_ll = (((u32)bt->pixelclock / 100) > 0) ?
1053                 ((width * (ADV7842_fsc / 100)) / ((u32)bt->pixelclock / 100)) : 0;
1054         const u8 pll[2] = {
1055                 0xc0 | ((width >> 8) & 0x1f),
1056                 width & 0xff
1057         };
1058
1059         v4l2_dbg(2, debug, sd, "%s\n", __func__);
1060
1061         switch (state->mode) {
1062         case ADV7842_MODE_COMP:
1063         case ADV7842_MODE_RGB:
1064                 /* auto graphics */
1065                 io_write(sd, 0x00, 0x07); /* video std */
1066                 io_write(sd, 0x01, 0x02); /* prim mode */
1067                 /* enable embedded syncs for auto graphics mode */
1068                 cp_write_and_or(sd, 0x81, 0xef, 0x10);
1069
1070                 /* Should only be set in auto-graphics mode [REF_02, p. 91-92] */
1071                 /* setup PLL_DIV_MAN_EN and PLL_DIV_RATIO */
1072                 /* IO-map reg. 0x16 and 0x17 should be written in sequence */
1073                 if (i2c_smbus_write_i2c_block_data(client, 0x16, 2, pll)) {
1074                         v4l2_err(sd, "writing to reg 0x16 and 0x17 failed\n");
1075                         break;
1076                 }
1077
1078                 /* active video - horizontal timing */
1079                 cp_write(sd, 0x26, (cp_start_sav >> 8) & 0xf);
1080                 cp_write(sd, 0x27, (cp_start_sav & 0xff));
1081                 cp_write(sd, 0x28, (cp_start_eav >> 8) & 0xf);
1082                 cp_write(sd, 0x29, (cp_start_eav & 0xff));
1083
1084                 /* active video - vertical timing */
1085                 cp_write(sd, 0xa5, (cp_start_vbi >> 4) & 0xff);
1086                 cp_write(sd, 0xa6, ((cp_start_vbi & 0xf) << 4) |
1087                                         ((cp_end_vbi >> 8) & 0xf));
1088                 cp_write(sd, 0xa7, cp_end_vbi & 0xff);
1089                 break;
1090         case ADV7842_MODE_HDMI:
1091                 /* set default prim_mode/vid_std for HDMI
1092                    according to [REF_03, c. 4.2] */
1093                 io_write(sd, 0x00, 0x02); /* video std */
1094                 io_write(sd, 0x01, 0x06); /* prim mode */
1095                 break;
1096         default:
1097                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1098                                 __func__, state->mode);
1099                 break;
1100         }
1101
1102         cp_write(sd, 0x8f, (ch1_fr_ll >> 8) & 0x7);
1103         cp_write(sd, 0x90, ch1_fr_ll & 0xff);
1104         cp_write(sd, 0xab, (height >> 4) & 0xff);
1105         cp_write(sd, 0xac, (height & 0x0f) << 4);
1106 }
1107
1108 static void adv7842_set_offset(struct v4l2_subdev *sd, bool auto_offset, u16 offset_a, u16 offset_b, u16 offset_c)
1109 {
1110         struct adv7842_state *state = to_state(sd);
1111         u8 offset_buf[4];
1112
1113         if (auto_offset) {
1114                 offset_a = 0x3ff;
1115                 offset_b = 0x3ff;
1116                 offset_c = 0x3ff;
1117         }
1118
1119         v4l2_dbg(2, debug, sd, "%s: %s offset: a = 0x%x, b = 0x%x, c = 0x%x\n",
1120                  __func__, auto_offset ? "Auto" : "Manual",
1121                  offset_a, offset_b, offset_c);
1122
1123         offset_buf[0]= (cp_read(sd, 0x77) & 0xc0) | ((offset_a & 0x3f0) >> 4);
1124         offset_buf[1] = ((offset_a & 0x00f) << 4) | ((offset_b & 0x3c0) >> 6);
1125         offset_buf[2] = ((offset_b & 0x03f) << 2) | ((offset_c & 0x300) >> 8);
1126         offset_buf[3] = offset_c & 0x0ff;
1127
1128         /* Registers must be written in this order with no i2c access in between */
1129         if (i2c_smbus_write_i2c_block_data(state->i2c_cp, 0x77, 4, offset_buf))
1130                 v4l2_err(sd, "%s: i2c error writing to CP reg 0x77, 0x78, 0x79, 0x7a\n", __func__);
1131 }
1132
1133 static void adv7842_set_gain(struct v4l2_subdev *sd, bool auto_gain, u16 gain_a, u16 gain_b, u16 gain_c)
1134 {
1135         struct adv7842_state *state = to_state(sd);
1136         u8 gain_buf[4];
1137         u8 gain_man = 1;
1138         u8 agc_mode_man = 1;
1139
1140         if (auto_gain) {
1141                 gain_man = 0;
1142                 agc_mode_man = 0;
1143                 gain_a = 0x100;
1144                 gain_b = 0x100;
1145                 gain_c = 0x100;
1146         }
1147
1148         v4l2_dbg(2, debug, sd, "%s: %s gain: a = 0x%x, b = 0x%x, c = 0x%x\n",
1149                  __func__, auto_gain ? "Auto" : "Manual",
1150                  gain_a, gain_b, gain_c);
1151
1152         gain_buf[0] = ((gain_man << 7) | (agc_mode_man << 6) | ((gain_a & 0x3f0) >> 4));
1153         gain_buf[1] = (((gain_a & 0x00f) << 4) | ((gain_b & 0x3c0) >> 6));
1154         gain_buf[2] = (((gain_b & 0x03f) << 2) | ((gain_c & 0x300) >> 8));
1155         gain_buf[3] = ((gain_c & 0x0ff));
1156
1157         /* Registers must be written in this order with no i2c access in between */
1158         if (i2c_smbus_write_i2c_block_data(state->i2c_cp, 0x73, 4, gain_buf))
1159                 v4l2_err(sd, "%s: i2c error writing to CP reg 0x73, 0x74, 0x75, 0x76\n", __func__);
1160 }
1161
1162 static void set_rgb_quantization_range(struct v4l2_subdev *sd)
1163 {
1164         struct adv7842_state *state = to_state(sd);
1165         bool rgb_output = io_read(sd, 0x02) & 0x02;
1166         bool hdmi_signal = hdmi_read(sd, 0x05) & 0x80;
1167         u8 y = HDMI_COLORSPACE_RGB;
1168
1169         if (hdmi_signal && (io_read(sd, 0x60) & 1))
1170                 y = infoframe_read(sd, 0x01) >> 5;
1171
1172         v4l2_dbg(2, debug, sd, "%s: RGB quantization range: %d, RGB out: %d, HDMI: %d\n",
1173                         __func__, state->rgb_quantization_range,
1174                         rgb_output, hdmi_signal);
1175
1176         adv7842_set_gain(sd, true, 0x0, 0x0, 0x0);
1177         adv7842_set_offset(sd, true, 0x0, 0x0, 0x0);
1178         io_write_clr_set(sd, 0x02, 0x04, rgb_output ? 0 : 4);
1179
1180         switch (state->rgb_quantization_range) {
1181         case V4L2_DV_RGB_RANGE_AUTO:
1182                 if (state->mode == ADV7842_MODE_RGB) {
1183                         /* Receiving analog RGB signal
1184                          * Set RGB full range (0-255) */
1185                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1186                         break;
1187                 }
1188
1189                 if (state->mode == ADV7842_MODE_COMP) {
1190                         /* Receiving analog YPbPr signal
1191                          * Set automode */
1192                         io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1193                         break;
1194                 }
1195
1196                 if (hdmi_signal) {
1197                         /* Receiving HDMI signal
1198                          * Set automode */
1199                         io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1200                         break;
1201                 }
1202
1203                 /* Receiving DVI-D signal
1204                  * ADV7842 selects RGB limited range regardless of
1205                  * input format (CE/IT) in automatic mode */
1206                 if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
1207                         /* RGB limited range (16-235) */
1208                         io_write_and_or(sd, 0x02, 0x0f, 0x00);
1209                 } else {
1210                         /* RGB full range (0-255) */
1211                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1212
1213                         if (is_digital_input(sd) && rgb_output) {
1214                                 adv7842_set_offset(sd, false, 0x40, 0x40, 0x40);
1215                         } else {
1216                                 adv7842_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
1217                                 adv7842_set_offset(sd, false, 0x70, 0x70, 0x70);
1218                         }
1219                 }
1220                 break;
1221         case V4L2_DV_RGB_RANGE_LIMITED:
1222                 if (state->mode == ADV7842_MODE_COMP) {
1223                         /* YCrCb limited range (16-235) */
1224                         io_write_and_or(sd, 0x02, 0x0f, 0x20);
1225                         break;
1226                 }
1227
1228                 if (y != HDMI_COLORSPACE_RGB)
1229                         break;
1230
1231                 /* RGB limited range (16-235) */
1232                 io_write_and_or(sd, 0x02, 0x0f, 0x00);
1233
1234                 break;
1235         case V4L2_DV_RGB_RANGE_FULL:
1236                 if (state->mode == ADV7842_MODE_COMP) {
1237                         /* YCrCb full range (0-255) */
1238                         io_write_and_or(sd, 0x02, 0x0f, 0x60);
1239                         break;
1240                 }
1241
1242                 if (y != HDMI_COLORSPACE_RGB)
1243                         break;
1244
1245                 /* RGB full range (0-255) */
1246                 io_write_and_or(sd, 0x02, 0x0f, 0x10);
1247
1248                 if (is_analog_input(sd) || hdmi_signal)
1249                         break;
1250
1251                 /* Adjust gain/offset for DVI-D signals only */
1252                 if (rgb_output) {
1253                         adv7842_set_offset(sd, false, 0x40, 0x40, 0x40);
1254                 } else {
1255                         adv7842_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
1256                         adv7842_set_offset(sd, false, 0x70, 0x70, 0x70);
1257                 }
1258                 break;
1259         }
1260 }
1261
1262 static int adv7842_s_ctrl(struct v4l2_ctrl *ctrl)
1263 {
1264         struct v4l2_subdev *sd = to_sd(ctrl);
1265         struct adv7842_state *state = to_state(sd);
1266
1267         /* TODO SDP ctrls
1268            contrast/brightness/hue/free run is acting a bit strange,
1269            not sure if sdp csc is correct.
1270          */
1271         switch (ctrl->id) {
1272         /* standard ctrls */
1273         case V4L2_CID_BRIGHTNESS:
1274                 cp_write(sd, 0x3c, ctrl->val);
1275                 sdp_write(sd, 0x14, ctrl->val);
1276                 /* ignore lsb sdp 0x17[3:2] */
1277                 return 0;
1278         case V4L2_CID_CONTRAST:
1279                 cp_write(sd, 0x3a, ctrl->val);
1280                 sdp_write(sd, 0x13, ctrl->val);
1281                 /* ignore lsb sdp 0x17[1:0] */
1282                 return 0;
1283         case V4L2_CID_SATURATION:
1284                 cp_write(sd, 0x3b, ctrl->val);
1285                 sdp_write(sd, 0x15, ctrl->val);
1286                 /* ignore lsb sdp 0x17[5:4] */
1287                 return 0;
1288         case V4L2_CID_HUE:
1289                 cp_write(sd, 0x3d, ctrl->val);
1290                 sdp_write(sd, 0x16, ctrl->val);
1291                 /* ignore lsb sdp 0x17[7:6] */
1292                 return 0;
1293                 /* custom ctrls */
1294         case V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE:
1295                 afe_write(sd, 0xc8, ctrl->val);
1296                 return 0;
1297         case V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL:
1298                 cp_write_and_or(sd, 0xbf, ~0x04, (ctrl->val << 2));
1299                 sdp_write_and_or(sd, 0xdd, ~0x04, (ctrl->val << 2));
1300                 return 0;
1301         case V4L2_CID_ADV_RX_FREE_RUN_COLOR: {
1302                 u8 R = (ctrl->val & 0xff0000) >> 16;
1303                 u8 G = (ctrl->val & 0x00ff00) >> 8;
1304                 u8 B = (ctrl->val & 0x0000ff);
1305                 /* RGB -> YUV, numerical approximation */
1306                 int Y = 66 * R + 129 * G + 25 * B;
1307                 int U = -38 * R - 74 * G + 112 * B;
1308                 int V = 112 * R - 94 * G - 18 * B;
1309
1310                 /* Scale down to 8 bits with rounding */
1311                 Y = (Y + 128) >> 8;
1312                 U = (U + 128) >> 8;
1313                 V = (V + 128) >> 8;
1314                 /* make U,V positive */
1315                 Y += 16;
1316                 U += 128;
1317                 V += 128;
1318
1319                 v4l2_dbg(1, debug, sd, "R %x, G %x, B %x\n", R, G, B);
1320                 v4l2_dbg(1, debug, sd, "Y %x, U %x, V %x\n", Y, U, V);
1321
1322                 /* CP */
1323                 cp_write(sd, 0xc1, R);
1324                 cp_write(sd, 0xc0, G);
1325                 cp_write(sd, 0xc2, B);
1326                 /* SDP */
1327                 sdp_write(sd, 0xde, Y);
1328                 sdp_write(sd, 0xdf, (V & 0xf0) | ((U >> 4) & 0x0f));
1329                 return 0;
1330         }
1331         case V4L2_CID_DV_RX_RGB_RANGE:
1332                 state->rgb_quantization_range = ctrl->val;
1333                 set_rgb_quantization_range(sd);
1334                 return 0;
1335         }
1336         return -EINVAL;
1337 }
1338
1339 static int adv7842_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1340 {
1341         struct v4l2_subdev *sd = to_sd(ctrl);
1342
1343         if (ctrl->id == V4L2_CID_DV_RX_IT_CONTENT_TYPE) {
1344                 ctrl->val = V4L2_DV_IT_CONTENT_TYPE_NO_ITC;
1345                 if ((io_read(sd, 0x60) & 1) && (infoframe_read(sd, 0x03) & 0x80))
1346                         ctrl->val = (infoframe_read(sd, 0x05) >> 4) & 3;
1347                 return 0;
1348         }
1349         return -EINVAL;
1350 }
1351
1352 static inline bool no_power(struct v4l2_subdev *sd)
1353 {
1354         return io_read(sd, 0x0c) & 0x24;
1355 }
1356
1357 static inline bool no_cp_signal(struct v4l2_subdev *sd)
1358 {
1359         return ((cp_read(sd, 0xb5) & 0xd0) != 0xd0) || !(cp_read(sd, 0xb1) & 0x80);
1360 }
1361
1362 static inline bool is_hdmi(struct v4l2_subdev *sd)
1363 {
1364         return hdmi_read(sd, 0x05) & 0x80;
1365 }
1366
1367 static int adv7842_g_input_status(struct v4l2_subdev *sd, u32 *status)
1368 {
1369         struct adv7842_state *state = to_state(sd);
1370
1371         *status = 0;
1372
1373         if (io_read(sd, 0x0c) & 0x24)
1374                 *status |= V4L2_IN_ST_NO_POWER;
1375
1376         if (state->mode == ADV7842_MODE_SDP) {
1377                 /* status from SDP block */
1378                 if (!(sdp_read(sd, 0x5A) & 0x01))
1379                         *status |= V4L2_IN_ST_NO_SIGNAL;
1380
1381                 v4l2_dbg(1, debug, sd, "%s: SDP status = 0x%x\n",
1382                                 __func__, *status);
1383                 return 0;
1384         }
1385         /* status from CP block */
1386         if ((cp_read(sd, 0xb5) & 0xd0) != 0xd0 ||
1387                         !(cp_read(sd, 0xb1) & 0x80))
1388                 /* TODO channel 2 */
1389                 *status |= V4L2_IN_ST_NO_SIGNAL;
1390
1391         if (is_digital_input(sd) && ((io_read(sd, 0x74) & 0x03) != 0x03))
1392                 *status |= V4L2_IN_ST_NO_SIGNAL;
1393
1394         v4l2_dbg(1, debug, sd, "%s: CP status = 0x%x\n",
1395                         __func__, *status);
1396
1397         return 0;
1398 }
1399
1400 struct stdi_readback {
1401         u16 bl, lcf, lcvs;
1402         u8 hs_pol, vs_pol;
1403         bool interlaced;
1404 };
1405
1406 static int stdi2dv_timings(struct v4l2_subdev *sd,
1407                 struct stdi_readback *stdi,
1408                 struct v4l2_dv_timings *timings)
1409 {
1410         struct adv7842_state *state = to_state(sd);
1411         u32 hfreq = (ADV7842_fsc * 8) / stdi->bl;
1412         u32 pix_clk;
1413         int i;
1414
1415         for (i = 0; v4l2_dv_timings_presets[i].bt.width; i++) {
1416                 const struct v4l2_bt_timings *bt = &v4l2_dv_timings_presets[i].bt;
1417
1418                 if (!v4l2_valid_dv_timings(&v4l2_dv_timings_presets[i],
1419                                            adv7842_get_dv_timings_cap(sd),
1420                                            adv7842_check_dv_timings, NULL))
1421                         continue;
1422                 if (vtotal(bt) != stdi->lcf + 1)
1423                         continue;
1424                 if (bt->vsync != stdi->lcvs)
1425                         continue;
1426
1427                 pix_clk = hfreq * htotal(bt);
1428
1429                 if ((pix_clk < bt->pixelclock + 1000000) &&
1430                     (pix_clk > bt->pixelclock - 1000000)) {
1431                         *timings = v4l2_dv_timings_presets[i];
1432                         return 0;
1433                 }
1434         }
1435
1436         if (v4l2_detect_cvt(stdi->lcf + 1, hfreq, stdi->lcvs, 0,
1437                             (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
1438                             (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
1439                             false, adv7842_get_dv_timings_cap(sd), timings))
1440                 return 0;
1441         if (v4l2_detect_gtf(stdi->lcf + 1, hfreq, stdi->lcvs,
1442                             (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
1443                             (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
1444                             false, state->aspect_ratio,
1445                             adv7842_get_dv_timings_cap(sd), timings))
1446                 return 0;
1447
1448         v4l2_dbg(2, debug, sd,
1449                 "%s: No format candidate found for lcvs = %d, lcf=%d, bl = %d, %chsync, %cvsync\n",
1450                 __func__, stdi->lcvs, stdi->lcf, stdi->bl,
1451                 stdi->hs_pol, stdi->vs_pol);
1452         return -1;
1453 }
1454
1455 static int read_stdi(struct v4l2_subdev *sd, struct stdi_readback *stdi)
1456 {
1457         u32 status;
1458
1459         adv7842_g_input_status(sd, &status);
1460         if (status & V4L2_IN_ST_NO_SIGNAL) {
1461                 v4l2_dbg(2, debug, sd, "%s: no signal\n", __func__);
1462                 return -ENOLINK;
1463         }
1464
1465         stdi->bl = ((cp_read(sd, 0xb1) & 0x3f) << 8) | cp_read(sd, 0xb2);
1466         stdi->lcf = ((cp_read(sd, 0xb3) & 0x7) << 8) | cp_read(sd, 0xb4);
1467         stdi->lcvs = cp_read(sd, 0xb3) >> 3;
1468
1469         if ((cp_read(sd, 0xb5) & 0x80) && ((cp_read(sd, 0xb5) & 0x03) == 0x01)) {
1470                 stdi->hs_pol = ((cp_read(sd, 0xb5) & 0x10) ?
1471                         ((cp_read(sd, 0xb5) & 0x08) ? '+' : '-') : 'x');
1472                 stdi->vs_pol = ((cp_read(sd, 0xb5) & 0x40) ?
1473                         ((cp_read(sd, 0xb5) & 0x20) ? '+' : '-') : 'x');
1474         } else {
1475                 stdi->hs_pol = 'x';
1476                 stdi->vs_pol = 'x';
1477         }
1478         stdi->interlaced = (cp_read(sd, 0xb1) & 0x40) ? true : false;
1479
1480         if (stdi->lcf < 239 || stdi->bl < 8 || stdi->bl == 0x3fff) {
1481                 v4l2_dbg(2, debug, sd, "%s: invalid signal\n", __func__);
1482                 return -ENOLINK;
1483         }
1484
1485         v4l2_dbg(2, debug, sd,
1486                 "%s: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, %chsync, %cvsync, %s\n",
1487                  __func__, stdi->lcf, stdi->bl, stdi->lcvs,
1488                  stdi->hs_pol, stdi->vs_pol,
1489                  stdi->interlaced ? "interlaced" : "progressive");
1490
1491         return 0;
1492 }
1493
1494 static int adv7842_enum_dv_timings(struct v4l2_subdev *sd,
1495                                    struct v4l2_enum_dv_timings *timings)
1496 {
1497         if (timings->pad != 0)
1498                 return -EINVAL;
1499
1500         return v4l2_enum_dv_timings_cap(timings,
1501                 adv7842_get_dv_timings_cap(sd), adv7842_check_dv_timings, NULL);
1502 }
1503
1504 static int adv7842_dv_timings_cap(struct v4l2_subdev *sd,
1505                                   struct v4l2_dv_timings_cap *cap)
1506 {
1507         if (cap->pad != 0)
1508                 return -EINVAL;
1509
1510         *cap = *adv7842_get_dv_timings_cap(sd);
1511         return 0;
1512 }
1513
1514 /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
1515    if the format is listed in adv7842_timings[] */
1516 static void adv7842_fill_optional_dv_timings_fields(struct v4l2_subdev *sd,
1517                 struct v4l2_dv_timings *timings)
1518 {
1519         v4l2_find_dv_timings_cap(timings, adv7842_get_dv_timings_cap(sd),
1520                         is_digital_input(sd) ? 250000 : 1000000,
1521                         adv7842_check_dv_timings, NULL);
1522         timings->bt.flags |= V4L2_DV_FL_CAN_DETECT_REDUCED_FPS;
1523 }
1524
1525 static int adv7842_query_dv_timings(struct v4l2_subdev *sd, unsigned int pad,
1526                                     struct v4l2_dv_timings *timings)
1527 {
1528         struct adv7842_state *state = to_state(sd);
1529         struct v4l2_bt_timings *bt = &timings->bt;
1530         struct stdi_readback stdi = { 0 };
1531
1532         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1533
1534         if (pad != 0)
1535                 return -EINVAL;
1536
1537         memset(timings, 0, sizeof(struct v4l2_dv_timings));
1538
1539         /* SDP block */
1540         if (state->mode == ADV7842_MODE_SDP)
1541                 return -ENODATA;
1542
1543         /* read STDI */
1544         if (read_stdi(sd, &stdi)) {
1545                 state->restart_stdi_once = true;
1546                 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
1547                 return -ENOLINK;
1548         }
1549         bt->interlaced = stdi.interlaced ?
1550                 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
1551         bt->standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
1552                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT;
1553
1554         if (is_digital_input(sd)) {
1555                 u32 freq;
1556
1557                 timings->type = V4L2_DV_BT_656_1120;
1558
1559                 bt->width = (hdmi_read(sd, 0x07) & 0x0f) * 256 + hdmi_read(sd, 0x08);
1560                 bt->height = (hdmi_read(sd, 0x09) & 0x0f) * 256 + hdmi_read(sd, 0x0a);
1561                 freq = ((hdmi_read(sd, 0x51) << 1) + (hdmi_read(sd, 0x52) >> 7)) * 1000000;
1562                 freq += ((hdmi_read(sd, 0x52) & 0x7f) * 7813);
1563                 if (is_hdmi(sd)) {
1564                         /* adjust for deep color mode */
1565                         freq = freq * 8 / (((hdmi_read(sd, 0x0b) & 0xc0) >> 6) * 2 + 8);
1566                 }
1567                 bt->pixelclock = freq;
1568                 bt->hfrontporch = (hdmi_read(sd, 0x20) & 0x03) * 256 +
1569                         hdmi_read(sd, 0x21);
1570                 bt->hsync = (hdmi_read(sd, 0x22) & 0x03) * 256 +
1571                         hdmi_read(sd, 0x23);
1572                 bt->hbackporch = (hdmi_read(sd, 0x24) & 0x03) * 256 +
1573                         hdmi_read(sd, 0x25);
1574                 bt->vfrontporch = ((hdmi_read(sd, 0x2a) & 0x1f) * 256 +
1575                         hdmi_read(sd, 0x2b)) / 2;
1576                 bt->vsync = ((hdmi_read(sd, 0x2e) & 0x1f) * 256 +
1577                         hdmi_read(sd, 0x2f)) / 2;
1578                 bt->vbackporch = ((hdmi_read(sd, 0x32) & 0x1f) * 256 +
1579                         hdmi_read(sd, 0x33)) / 2;
1580                 bt->polarities = ((hdmi_read(sd, 0x05) & 0x10) ? V4L2_DV_VSYNC_POS_POL : 0) |
1581                         ((hdmi_read(sd, 0x05) & 0x20) ? V4L2_DV_HSYNC_POS_POL : 0);
1582                 if (bt->interlaced == V4L2_DV_INTERLACED) {
1583                         bt->height += (hdmi_read(sd, 0x0b) & 0x0f) * 256 +
1584                                         hdmi_read(sd, 0x0c);
1585                         bt->il_vfrontporch = ((hdmi_read(sd, 0x2c) & 0x1f) * 256 +
1586                                         hdmi_read(sd, 0x2d)) / 2;
1587                         bt->il_vsync = ((hdmi_read(sd, 0x30) & 0x1f) * 256 +
1588                                         hdmi_read(sd, 0x31)) / 2;
1589                         bt->il_vbackporch = ((hdmi_read(sd, 0x34) & 0x1f) * 256 +
1590                                         hdmi_read(sd, 0x35)) / 2;
1591                 } else {
1592                         bt->il_vfrontporch = 0;
1593                         bt->il_vsync = 0;
1594                         bt->il_vbackporch = 0;
1595                 }
1596                 adv7842_fill_optional_dv_timings_fields(sd, timings);
1597                 if ((timings->bt.flags & V4L2_DV_FL_CAN_REDUCE_FPS) &&
1598                     freq < bt->pixelclock) {
1599                         u32 reduced_freq = ((u32)bt->pixelclock / 1001) * 1000;
1600                         u32 delta_freq = abs(freq - reduced_freq);
1601
1602                         if (delta_freq < ((u32)bt->pixelclock - reduced_freq) / 2)
1603                                 timings->bt.flags |= V4L2_DV_FL_REDUCED_FPS;
1604                 }
1605         } else {
1606                 /* find format
1607                  * Since LCVS values are inaccurate [REF_03, p. 339-340],
1608                  * stdi2dv_timings() is called with lcvs +-1 if the first attempt fails.
1609                  */
1610                 if (!stdi2dv_timings(sd, &stdi, timings))
1611                         goto found;
1612                 stdi.lcvs += 1;
1613                 v4l2_dbg(1, debug, sd, "%s: lcvs + 1 = %d\n", __func__, stdi.lcvs);
1614                 if (!stdi2dv_timings(sd, &stdi, timings))
1615                         goto found;
1616                 stdi.lcvs -= 2;
1617                 v4l2_dbg(1, debug, sd, "%s: lcvs - 1 = %d\n", __func__, stdi.lcvs);
1618                 if (stdi2dv_timings(sd, &stdi, timings)) {
1619                         /*
1620                          * The STDI block may measure wrong values, especially
1621                          * for lcvs and lcf. If the driver can not find any
1622                          * valid timing, the STDI block is restarted to measure
1623                          * the video timings again. The function will return an
1624                          * error, but the restart of STDI will generate a new
1625                          * STDI interrupt and the format detection process will
1626                          * restart.
1627                          */
1628                         if (state->restart_stdi_once) {
1629                                 v4l2_dbg(1, debug, sd, "%s: restart STDI\n", __func__);
1630                                 /* TODO restart STDI for Sync Channel 2 */
1631                                 /* enter one-shot mode */
1632                                 cp_write_and_or(sd, 0x86, 0xf9, 0x00);
1633                                 /* trigger STDI restart */
1634                                 cp_write_and_or(sd, 0x86, 0xf9, 0x04);
1635                                 /* reset to continuous mode */
1636                                 cp_write_and_or(sd, 0x86, 0xf9, 0x02);
1637                                 state->restart_stdi_once = false;
1638                                 return -ENOLINK;
1639                         }
1640                         v4l2_dbg(1, debug, sd, "%s: format not supported\n", __func__);
1641                         return -ERANGE;
1642                 }
1643                 state->restart_stdi_once = true;
1644         }
1645 found:
1646
1647         if (debug > 1)
1648                 v4l2_print_dv_timings(sd->name, "adv7842_query_dv_timings:",
1649                                 timings, true);
1650         return 0;
1651 }
1652
1653 static int adv7842_s_dv_timings(struct v4l2_subdev *sd, unsigned int pad,
1654                                 struct v4l2_dv_timings *timings)
1655 {
1656         struct adv7842_state *state = to_state(sd);
1657         struct v4l2_bt_timings *bt;
1658         int err;
1659
1660         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1661
1662         if (pad != 0)
1663                 return -EINVAL;
1664
1665         if (state->mode == ADV7842_MODE_SDP)
1666                 return -ENODATA;
1667
1668         if (v4l2_match_dv_timings(&state->timings, timings, 0, false)) {
1669                 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1670                 return 0;
1671         }
1672
1673         bt = &timings->bt;
1674
1675         if (!v4l2_valid_dv_timings(timings, adv7842_get_dv_timings_cap(sd),
1676                                    adv7842_check_dv_timings, NULL))
1677                 return -ERANGE;
1678
1679         adv7842_fill_optional_dv_timings_fields(sd, timings);
1680
1681         state->timings = *timings;
1682
1683         cp_write(sd, 0x91, bt->interlaced ? 0x40 : 0x00);
1684
1685         /* Use prim_mode and vid_std when available */
1686         err = configure_predefined_video_timings(sd, timings);
1687         if (err) {
1688                 /* custom settings when the video format
1689                   does not have prim_mode/vid_std */
1690                 configure_custom_video_timings(sd, bt);
1691         }
1692
1693         set_rgb_quantization_range(sd);
1694
1695
1696         if (debug > 1)
1697                 v4l2_print_dv_timings(sd->name, "adv7842_s_dv_timings: ",
1698                                       timings, true);
1699         return 0;
1700 }
1701
1702 static int adv7842_g_dv_timings(struct v4l2_subdev *sd, unsigned int pad,
1703                                 struct v4l2_dv_timings *timings)
1704 {
1705         struct adv7842_state *state = to_state(sd);
1706
1707         if (pad != 0)
1708                 return -EINVAL;
1709
1710         if (state->mode == ADV7842_MODE_SDP)
1711                 return -ENODATA;
1712         *timings = state->timings;
1713         return 0;
1714 }
1715
1716 static void enable_input(struct v4l2_subdev *sd)
1717 {
1718         struct adv7842_state *state = to_state(sd);
1719
1720         set_rgb_quantization_range(sd);
1721         switch (state->mode) {
1722         case ADV7842_MODE_SDP:
1723         case ADV7842_MODE_COMP:
1724         case ADV7842_MODE_RGB:
1725                 io_write(sd, 0x15, 0xb0);   /* Disable Tristate of Pins (no audio) */
1726                 break;
1727         case ADV7842_MODE_HDMI:
1728                 hdmi_write(sd, 0x01, 0x00); /* Enable HDMI clock terminators */
1729                 io_write(sd, 0x15, 0xa0);   /* Disable Tristate of Pins */
1730                 hdmi_write_and_or(sd, 0x1a, 0xef, 0x00); /* Unmute audio */
1731                 break;
1732         default:
1733                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1734                          __func__, state->mode);
1735                 break;
1736         }
1737 }
1738
1739 static void disable_input(struct v4l2_subdev *sd)
1740 {
1741         hdmi_write_and_or(sd, 0x1a, 0xef, 0x10); /* Mute audio [REF_01, c. 2.2.2] */
1742         msleep(16); /* 512 samples with >= 32 kHz sample rate [REF_03, c. 8.29] */
1743         io_write(sd, 0x15, 0xbe);   /* Tristate all outputs from video core */
1744         hdmi_write(sd, 0x01, 0x78); /* Disable HDMI clock terminators */
1745 }
1746
1747 static void sdp_csc_coeff(struct v4l2_subdev *sd,
1748                           const struct adv7842_sdp_csc_coeff *c)
1749 {
1750         /* csc auto/manual */
1751         sdp_io_write_and_or(sd, 0xe0, 0xbf, c->manual ? 0x00 : 0x40);
1752
1753         if (!c->manual)
1754                 return;
1755
1756         /* csc scaling */
1757         sdp_io_write_and_or(sd, 0xe0, 0x7f, c->scaling == 2 ? 0x80 : 0x00);
1758
1759         /* A coeff */
1760         sdp_io_write_and_or(sd, 0xe0, 0xe0, c->A1 >> 8);
1761         sdp_io_write(sd, 0xe1, c->A1);
1762         sdp_io_write_and_or(sd, 0xe2, 0xe0, c->A2 >> 8);
1763         sdp_io_write(sd, 0xe3, c->A2);
1764         sdp_io_write_and_or(sd, 0xe4, 0xe0, c->A3 >> 8);
1765         sdp_io_write(sd, 0xe5, c->A3);
1766
1767         /* A scale */
1768         sdp_io_write_and_or(sd, 0xe6, 0x80, c->A4 >> 8);
1769         sdp_io_write(sd, 0xe7, c->A4);
1770
1771         /* B coeff */
1772         sdp_io_write_and_or(sd, 0xe8, 0xe0, c->B1 >> 8);
1773         sdp_io_write(sd, 0xe9, c->B1);
1774         sdp_io_write_and_or(sd, 0xea, 0xe0, c->B2 >> 8);
1775         sdp_io_write(sd, 0xeb, c->B2);
1776         sdp_io_write_and_or(sd, 0xec, 0xe0, c->B3 >> 8);
1777         sdp_io_write(sd, 0xed, c->B3);
1778
1779         /* B scale */
1780         sdp_io_write_and_or(sd, 0xee, 0x80, c->B4 >> 8);
1781         sdp_io_write(sd, 0xef, c->B4);
1782
1783         /* C coeff */
1784         sdp_io_write_and_or(sd, 0xf0, 0xe0, c->C1 >> 8);
1785         sdp_io_write(sd, 0xf1, c->C1);
1786         sdp_io_write_and_or(sd, 0xf2, 0xe0, c->C2 >> 8);
1787         sdp_io_write(sd, 0xf3, c->C2);
1788         sdp_io_write_and_or(sd, 0xf4, 0xe0, c->C3 >> 8);
1789         sdp_io_write(sd, 0xf5, c->C3);
1790
1791         /* C scale */
1792         sdp_io_write_and_or(sd, 0xf6, 0x80, c->C4 >> 8);
1793         sdp_io_write(sd, 0xf7, c->C4);
1794 }
1795
1796 static void select_input(struct v4l2_subdev *sd,
1797                          enum adv7842_vid_std_select vid_std_select)
1798 {
1799         struct adv7842_state *state = to_state(sd);
1800
1801         switch (state->mode) {
1802         case ADV7842_MODE_SDP:
1803                 io_write(sd, 0x00, vid_std_select); /* video std: CVBS or YC mode */
1804                 io_write(sd, 0x01, 0); /* prim mode */
1805                 /* enable embedded syncs for auto graphics mode */
1806                 cp_write_and_or(sd, 0x81, 0xef, 0x10);
1807
1808                 afe_write(sd, 0x00, 0x00); /* power up ADC */
1809                 afe_write(sd, 0xc8, 0x00); /* phase control */
1810
1811                 io_write(sd, 0xdd, 0x90); /* Manual 2x output clock */
1812                 /* script says register 0xde, which don't exist in manual */
1813
1814                 /* Manual analog input muxing mode, CVBS (6.4)*/
1815                 afe_write_and_or(sd, 0x02, 0x7f, 0x80);
1816                 if (vid_std_select == ADV7842_SDP_VID_STD_CVBS_SD_4x1) {
1817                         afe_write(sd, 0x03, 0xa0); /* ADC0 to AIN10 (CVBS), ADC1 N/C*/
1818                         afe_write(sd, 0x04, 0x00); /* ADC2 N/C,ADC3 N/C*/
1819                 } else {
1820                         afe_write(sd, 0x03, 0xa0); /* ADC0 to AIN10 (CVBS), ADC1 N/C*/
1821                         afe_write(sd, 0x04, 0xc0); /* ADC2 to AIN12, ADC3 N/C*/
1822                 }
1823                 afe_write(sd, 0x0c, 0x1f); /* ADI recommend write */
1824                 afe_write(sd, 0x12, 0x63); /* ADI recommend write */
1825
1826                 sdp_io_write(sd, 0xb2, 0x60); /* Disable AV codes */
1827                 sdp_io_write(sd, 0xc8, 0xe3); /* Disable Ancillary data */
1828
1829                 /* SDP recommended settings */
1830                 sdp_write(sd, 0x00, 0x3F); /* Autodetect PAL NTSC (not SECAM) */
1831                 sdp_write(sd, 0x01, 0x00); /* Pedestal Off */
1832
1833                 sdp_write(sd, 0x03, 0xE4); /* Manual VCR Gain Luma 0x40B */
1834                 sdp_write(sd, 0x04, 0x0B); /* Manual Luma setting */
1835                 sdp_write(sd, 0x05, 0xC3); /* Manual Chroma setting 0x3FE */
1836                 sdp_write(sd, 0x06, 0xFE); /* Manual Chroma setting */
1837                 sdp_write(sd, 0x12, 0x0D); /* Frame TBC,I_P, 3D comb enabled */
1838                 sdp_write(sd, 0xA7, 0x00); /* ADI Recommended Write */
1839                 sdp_io_write(sd, 0xB0, 0x00); /* Disable H and v blanking */
1840
1841                 /* deinterlacer enabled and 3D comb */
1842                 sdp_write_and_or(sd, 0x12, 0xf6, 0x09);
1843
1844                 break;
1845
1846         case ADV7842_MODE_COMP:
1847         case ADV7842_MODE_RGB:
1848                 /* Automatic analog input muxing mode */
1849                 afe_write_and_or(sd, 0x02, 0x7f, 0x00);
1850                 /* set mode and select free run resolution */
1851                 io_write(sd, 0x00, vid_std_select); /* video std */
1852                 io_write(sd, 0x01, 0x02); /* prim mode */
1853                 cp_write_and_or(sd, 0x81, 0xef, 0x10); /* enable embedded syncs
1854                                                           for auto graphics mode */
1855
1856                 afe_write(sd, 0x00, 0x00); /* power up ADC */
1857                 afe_write(sd, 0xc8, 0x00); /* phase control */
1858                 if (state->mode == ADV7842_MODE_COMP) {
1859                         /* force to YCrCb */
1860                         io_write_and_or(sd, 0x02, 0x0f, 0x60);
1861                 } else {
1862                         /* force to RGB */
1863                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1864                 }
1865
1866                 /* set ADI recommended settings for digitizer */
1867                 /* "ADV7842 Register Settings Recommendations
1868                  * (rev. 1.8, November 2010)" p. 9. */
1869                 afe_write(sd, 0x0c, 0x1f); /* ADC Range improvement */
1870                 afe_write(sd, 0x12, 0x63); /* ADC Range improvement */
1871
1872                 /* set to default gain for RGB */
1873                 cp_write(sd, 0x73, 0x10);
1874                 cp_write(sd, 0x74, 0x04);
1875                 cp_write(sd, 0x75, 0x01);
1876                 cp_write(sd, 0x76, 0x00);
1877
1878                 cp_write(sd, 0x3e, 0x04); /* CP core pre-gain control */
1879                 cp_write(sd, 0xc3, 0x39); /* CP coast control. Graphics mode */
1880                 cp_write(sd, 0x40, 0x5c); /* CP core pre-gain control. Graphics mode */
1881                 break;
1882
1883         case ADV7842_MODE_HDMI:
1884                 /* Automatic analog input muxing mode */
1885                 afe_write_and_or(sd, 0x02, 0x7f, 0x00);
1886                 /* set mode and select free run resolution */
1887                 if (state->hdmi_port_a)
1888                         hdmi_write(sd, 0x00, 0x02); /* select port A */
1889                 else
1890                         hdmi_write(sd, 0x00, 0x03); /* select port B */
1891                 io_write(sd, 0x00, vid_std_select); /* video std */
1892                 io_write(sd, 0x01, 5); /* prim mode */
1893                 cp_write_and_or(sd, 0x81, 0xef, 0x00); /* disable embedded syncs
1894                                                           for auto graphics mode */
1895
1896                 /* set ADI recommended settings for HDMI: */
1897                 /* "ADV7842 Register Settings Recommendations
1898                  * (rev. 1.8, November 2010)" p. 3. */
1899                 hdmi_write(sd, 0xc0, 0x00);
1900                 hdmi_write(sd, 0x0d, 0x34); /* ADI recommended write */
1901                 hdmi_write(sd, 0x3d, 0x10); /* ADI recommended write */
1902                 hdmi_write(sd, 0x44, 0x85); /* TMDS PLL optimization */
1903                 hdmi_write(sd, 0x46, 0x1f); /* ADI recommended write */
1904                 hdmi_write(sd, 0x57, 0xb6); /* TMDS PLL optimization */
1905                 hdmi_write(sd, 0x58, 0x03); /* TMDS PLL optimization */
1906                 hdmi_write(sd, 0x60, 0x88); /* TMDS PLL optimization */
1907                 hdmi_write(sd, 0x61, 0x88); /* TMDS PLL optimization */
1908                 hdmi_write(sd, 0x6c, 0x18); /* Disable ISRC clearing bit,
1909                                                Improve robustness */
1910                 hdmi_write(sd, 0x75, 0x10); /* DDC drive strength */
1911                 hdmi_write(sd, 0x85, 0x1f); /* equaliser */
1912                 hdmi_write(sd, 0x87, 0x70); /* ADI recommended write */
1913                 hdmi_write(sd, 0x89, 0x04); /* equaliser */
1914                 hdmi_write(sd, 0x8a, 0x1e); /* equaliser */
1915                 hdmi_write(sd, 0x93, 0x04); /* equaliser */
1916                 hdmi_write(sd, 0x94, 0x1e); /* equaliser */
1917                 hdmi_write(sd, 0x99, 0xa1); /* ADI recommended write */
1918                 hdmi_write(sd, 0x9b, 0x09); /* ADI recommended write */
1919                 hdmi_write(sd, 0x9d, 0x02); /* equaliser */
1920
1921                 afe_write(sd, 0x00, 0xff); /* power down ADC */
1922                 afe_write(sd, 0xc8, 0x40); /* phase control */
1923
1924                 /* set to default gain for HDMI */
1925                 cp_write(sd, 0x73, 0x10);
1926                 cp_write(sd, 0x74, 0x04);
1927                 cp_write(sd, 0x75, 0x01);
1928                 cp_write(sd, 0x76, 0x00);
1929
1930                 /* reset ADI recommended settings for digitizer */
1931                 /* "ADV7842 Register Settings Recommendations
1932                  * (rev. 2.5, June 2010)" p. 17. */
1933                 afe_write(sd, 0x12, 0xfb); /* ADC noise shaping filter controls */
1934                 afe_write(sd, 0x0c, 0x0d); /* CP core gain controls */
1935                 cp_write(sd, 0x3e, 0x00); /* CP core pre-gain control */
1936
1937                 /* CP coast control */
1938                 cp_write(sd, 0xc3, 0x33); /* Component mode */
1939
1940                 /* color space conversion, autodetect color space */
1941                 io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1942                 break;
1943
1944         default:
1945                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1946                          __func__, state->mode);
1947                 break;
1948         }
1949 }
1950
1951 static int adv7842_s_routing(struct v4l2_subdev *sd,
1952                 u32 input, u32 output, u32 config)
1953 {
1954         struct adv7842_state *state = to_state(sd);
1955
1956         v4l2_dbg(2, debug, sd, "%s: input %d\n", __func__, input);
1957
1958         switch (input) {
1959         case ADV7842_SELECT_HDMI_PORT_A:
1960                 state->mode = ADV7842_MODE_HDMI;
1961                 state->vid_std_select = ADV7842_HDMI_COMP_VID_STD_HD_1250P;
1962                 state->hdmi_port_a = true;
1963                 break;
1964         case ADV7842_SELECT_HDMI_PORT_B:
1965                 state->mode = ADV7842_MODE_HDMI;
1966                 state->vid_std_select = ADV7842_HDMI_COMP_VID_STD_HD_1250P;
1967                 state->hdmi_port_a = false;
1968                 break;
1969         case ADV7842_SELECT_VGA_COMP:
1970                 state->mode = ADV7842_MODE_COMP;
1971                 state->vid_std_select = ADV7842_RGB_VID_STD_AUTO_GRAPH_MODE;
1972                 break;
1973         case ADV7842_SELECT_VGA_RGB:
1974                 state->mode = ADV7842_MODE_RGB;
1975                 state->vid_std_select = ADV7842_RGB_VID_STD_AUTO_GRAPH_MODE;
1976                 break;
1977         case ADV7842_SELECT_SDP_CVBS:
1978                 state->mode = ADV7842_MODE_SDP;
1979                 state->vid_std_select = ADV7842_SDP_VID_STD_CVBS_SD_4x1;
1980                 break;
1981         case ADV7842_SELECT_SDP_YC:
1982                 state->mode = ADV7842_MODE_SDP;
1983                 state->vid_std_select = ADV7842_SDP_VID_STD_YC_SD4_x1;
1984                 break;
1985         default:
1986                 return -EINVAL;
1987         }
1988
1989         disable_input(sd);
1990         select_input(sd, state->vid_std_select);
1991         enable_input(sd);
1992
1993         v4l2_subdev_notify_event(sd, &adv7842_ev_fmt);
1994
1995         return 0;
1996 }
1997
1998 static int adv7842_enum_mbus_code(struct v4l2_subdev *sd,
1999                 struct v4l2_subdev_state *sd_state,
2000                 struct v4l2_subdev_mbus_code_enum *code)
2001 {
2002         if (code->index >= ARRAY_SIZE(adv7842_formats))
2003                 return -EINVAL;
2004         code->code = adv7842_formats[code->index].code;
2005         return 0;
2006 }
2007
2008 static void adv7842_fill_format(struct adv7842_state *state,
2009                                 struct v4l2_mbus_framefmt *format)
2010 {
2011         memset(format, 0, sizeof(*format));
2012
2013         format->width = state->timings.bt.width;
2014         format->height = state->timings.bt.height;
2015         format->field = V4L2_FIELD_NONE;
2016         format->colorspace = V4L2_COLORSPACE_SRGB;
2017
2018         if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO)
2019                 format->colorspace = (state->timings.bt.height <= 576) ?
2020                         V4L2_COLORSPACE_SMPTE170M : V4L2_COLORSPACE_REC709;
2021 }
2022
2023 /*
2024  * Compute the op_ch_sel value required to obtain on the bus the component order
2025  * corresponding to the selected format taking into account bus reordering
2026  * applied by the board at the output of the device.
2027  *
2028  * The following table gives the op_ch_value from the format component order
2029  * (expressed as op_ch_sel value in column) and the bus reordering (expressed as
2030  * adv7842_bus_order value in row).
2031  *
2032  *           |  GBR(0)  GRB(1)  BGR(2)  RGB(3)  BRG(4)  RBG(5)
2033  * ----------+-------------------------------------------------
2034  * RGB (NOP) |  GBR     GRB     BGR     RGB     BRG     RBG
2035  * GRB (1-2) |  BGR     RGB     GBR     GRB     RBG     BRG
2036  * RBG (2-3) |  GRB     GBR     BRG     RBG     BGR     RGB
2037  * BGR (1-3) |  RBG     BRG     RGB     BGR     GRB     GBR
2038  * BRG (ROR) |  BRG     RBG     GRB     GBR     RGB     BGR
2039  * GBR (ROL) |  RGB     BGR     RBG     BRG     GBR     GRB
2040  */
2041 static unsigned int adv7842_op_ch_sel(struct adv7842_state *state)
2042 {
2043 #define _SEL(a, b, c, d, e, f)  { \
2044         ADV7842_OP_CH_SEL_##a, ADV7842_OP_CH_SEL_##b, ADV7842_OP_CH_SEL_##c, \
2045         ADV7842_OP_CH_SEL_##d, ADV7842_OP_CH_SEL_##e, ADV7842_OP_CH_SEL_##f }
2046 #define _BUS(x)                 [ADV7842_BUS_ORDER_##x]
2047
2048         static const unsigned int op_ch_sel[6][6] = {
2049                 _BUS(RGB) /* NOP */ = _SEL(GBR, GRB, BGR, RGB, BRG, RBG),
2050                 _BUS(GRB) /* 1-2 */ = _SEL(BGR, RGB, GBR, GRB, RBG, BRG),
2051                 _BUS(RBG) /* 2-3 */ = _SEL(GRB, GBR, BRG, RBG, BGR, RGB),
2052                 _BUS(BGR) /* 1-3 */ = _SEL(RBG, BRG, RGB, BGR, GRB, GBR),
2053                 _BUS(BRG) /* ROR */ = _SEL(BRG, RBG, GRB, GBR, RGB, BGR),
2054                 _BUS(GBR) /* ROL */ = _SEL(RGB, BGR, RBG, BRG, GBR, GRB),
2055         };
2056
2057         return op_ch_sel[state->pdata.bus_order][state->format->op_ch_sel >> 5];
2058 }
2059
2060 static void adv7842_setup_format(struct adv7842_state *state)
2061 {
2062         struct v4l2_subdev *sd = &state->sd;
2063
2064         io_write_clr_set(sd, 0x02, 0x02,
2065                         state->format->rgb_out ? ADV7842_RGB_OUT : 0);
2066         io_write(sd, 0x03, state->format->op_format_sel |
2067                  state->pdata.op_format_mode_sel);
2068         io_write_clr_set(sd, 0x04, 0xe0, adv7842_op_ch_sel(state));
2069         io_write_clr_set(sd, 0x05, 0x01,
2070                         state->format->swap_cb_cr ? ADV7842_OP_SWAP_CB_CR : 0);
2071         set_rgb_quantization_range(sd);
2072 }
2073
2074 static int adv7842_get_format(struct v4l2_subdev *sd,
2075                               struct v4l2_subdev_state *sd_state,
2076                               struct v4l2_subdev_format *format)
2077 {
2078         struct adv7842_state *state = to_state(sd);
2079
2080         if (format->pad != ADV7842_PAD_SOURCE)
2081                 return -EINVAL;
2082
2083         if (state->mode == ADV7842_MODE_SDP) {
2084                 /* SPD block */
2085                 if (!(sdp_read(sd, 0x5a) & 0x01))
2086                         return -EINVAL;
2087                 format->format.code = MEDIA_BUS_FMT_YUYV8_2X8;
2088                 format->format.width = 720;
2089                 /* valid signal */
2090                 if (state->norm & V4L2_STD_525_60)
2091                         format->format.height = 480;
2092                 else
2093                         format->format.height = 576;
2094                 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
2095                 return 0;
2096         }
2097
2098         adv7842_fill_format(state, &format->format);
2099
2100         if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
2101                 struct v4l2_mbus_framefmt *fmt;
2102
2103                 fmt = v4l2_subdev_state_get_format(sd_state, format->pad);
2104                 format->format.code = fmt->code;
2105         } else {
2106                 format->format.code = state->format->code;
2107         }
2108
2109         return 0;
2110 }
2111
2112 static int adv7842_set_format(struct v4l2_subdev *sd,
2113                               struct v4l2_subdev_state *sd_state,
2114                               struct v4l2_subdev_format *format)
2115 {
2116         struct adv7842_state *state = to_state(sd);
2117         const struct adv7842_format_info *info;
2118
2119         if (format->pad != ADV7842_PAD_SOURCE)
2120                 return -EINVAL;
2121
2122         if (state->mode == ADV7842_MODE_SDP)
2123                 return adv7842_get_format(sd, sd_state, format);
2124
2125         info = adv7842_format_info(state, format->format.code);
2126         if (info == NULL)
2127                 info = adv7842_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8);
2128
2129         adv7842_fill_format(state, &format->format);
2130         format->format.code = info->code;
2131
2132         if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
2133                 struct v4l2_mbus_framefmt *fmt;
2134
2135                 fmt = v4l2_subdev_state_get_format(sd_state, format->pad);
2136                 fmt->code = format->format.code;
2137         } else {
2138                 state->format = info;
2139                 adv7842_setup_format(state);
2140         }
2141
2142         return 0;
2143 }
2144
2145 static void adv7842_irq_enable(struct v4l2_subdev *sd, bool enable)
2146 {
2147         if (enable) {
2148                 /* Enable SSPD, STDI and CP locked/unlocked interrupts */
2149                 io_write(sd, 0x46, 0x9c);
2150                 /* ESDP_50HZ_DET interrupt */
2151                 io_write(sd, 0x5a, 0x10);
2152                 /* Enable CABLE_DET_A/B_ST (+5v) interrupt */
2153                 io_write(sd, 0x73, 0x03);
2154                 /* Enable V_LOCKED and DE_REGEN_LCK interrupts */
2155                 io_write(sd, 0x78, 0x03);
2156                 /* Enable SDP Standard Detection Change and SDP Video Detected */
2157                 io_write(sd, 0xa0, 0x09);
2158                 /* Enable HDMI_MODE interrupt */
2159                 io_write(sd, 0x69, 0x08);
2160         } else {
2161                 io_write(sd, 0x46, 0x0);
2162                 io_write(sd, 0x5a, 0x0);
2163                 io_write(sd, 0x73, 0x0);
2164                 io_write(sd, 0x78, 0x0);
2165                 io_write(sd, 0xa0, 0x0);
2166                 io_write(sd, 0x69, 0x0);
2167         }
2168 }
2169
2170 #if IS_ENABLED(CONFIG_VIDEO_ADV7842_CEC)
2171 static void adv7842_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status)
2172 {
2173         struct adv7842_state *state = to_state(sd);
2174
2175         if ((cec_read(sd, 0x11) & 0x01) == 0) {
2176                 v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__);
2177                 return;
2178         }
2179
2180         if (tx_raw_status & 0x02) {
2181                 v4l2_dbg(1, debug, sd, "%s: tx raw: arbitration lost\n",
2182                          __func__);
2183                 cec_transmit_done(state->cec_adap, CEC_TX_STATUS_ARB_LOST,
2184                                   1, 0, 0, 0);
2185                 return;
2186         }
2187         if (tx_raw_status & 0x04) {
2188                 u8 status;
2189                 u8 nack_cnt;
2190                 u8 low_drive_cnt;
2191
2192                 v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__);
2193                 /*
2194                  * We set this status bit since this hardware performs
2195                  * retransmissions.
2196                  */
2197                 status = CEC_TX_STATUS_MAX_RETRIES;
2198                 nack_cnt = cec_read(sd, 0x14) & 0xf;
2199                 if (nack_cnt)
2200                         status |= CEC_TX_STATUS_NACK;
2201                 low_drive_cnt = cec_read(sd, 0x14) >> 4;
2202                 if (low_drive_cnt)
2203                         status |= CEC_TX_STATUS_LOW_DRIVE;
2204                 cec_transmit_done(state->cec_adap, status,
2205                                   0, nack_cnt, low_drive_cnt, 0);
2206                 return;
2207         }
2208         if (tx_raw_status & 0x01) {
2209                 v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__);
2210                 cec_transmit_done(state->cec_adap, CEC_TX_STATUS_OK, 0, 0, 0, 0);
2211                 return;
2212         }
2213 }
2214
2215 static void adv7842_cec_isr(struct v4l2_subdev *sd, bool *handled)
2216 {
2217         u8 cec_irq;
2218
2219         /* cec controller */
2220         cec_irq = io_read(sd, 0x93) & 0x0f;
2221         if (!cec_irq)
2222                 return;
2223
2224         v4l2_dbg(1, debug, sd, "%s: cec: irq 0x%x\n", __func__, cec_irq);
2225         adv7842_cec_tx_raw_status(sd, cec_irq);
2226         if (cec_irq & 0x08) {
2227                 struct adv7842_state *state = to_state(sd);
2228                 struct cec_msg msg;
2229
2230                 msg.len = cec_read(sd, 0x25) & 0x1f;
2231                 if (msg.len > CEC_MAX_MSG_SIZE)
2232                         msg.len = CEC_MAX_MSG_SIZE;
2233
2234                 if (msg.len) {
2235                         u8 i;
2236
2237                         for (i = 0; i < msg.len; i++)
2238                                 msg.msg[i] = cec_read(sd, i + 0x15);
2239                         cec_write(sd, 0x26, 0x01); /* re-enable rx */
2240                         cec_received_msg(state->cec_adap, &msg);
2241                 }
2242         }
2243
2244         io_write(sd, 0x94, cec_irq);
2245
2246         if (handled)
2247                 *handled = true;
2248 }
2249
2250 static int adv7842_cec_adap_enable(struct cec_adapter *adap, bool enable)
2251 {
2252         struct adv7842_state *state = cec_get_drvdata(adap);
2253         struct v4l2_subdev *sd = &state->sd;
2254
2255         if (!state->cec_enabled_adap && enable) {
2256                 cec_write_clr_set(sd, 0x2a, 0x01, 0x01); /* power up cec */
2257                 cec_write(sd, 0x2c, 0x01);      /* cec soft reset */
2258                 cec_write_clr_set(sd, 0x11, 0x01, 0); /* initially disable tx */
2259                 /* enabled irqs: */
2260                 /* tx: ready */
2261                 /* tx: arbitration lost */
2262                 /* tx: retry timeout */
2263                 /* rx: ready */
2264                 io_write_clr_set(sd, 0x96, 0x0f, 0x0f);
2265                 cec_write(sd, 0x26, 0x01);            /* enable rx */
2266         } else if (state->cec_enabled_adap && !enable) {
2267                 /* disable cec interrupts */
2268                 io_write_clr_set(sd, 0x96, 0x0f, 0x00);
2269                 /* disable address mask 1-3 */
2270                 cec_write_clr_set(sd, 0x27, 0x70, 0x00);
2271                 /* power down cec section */
2272                 cec_write_clr_set(sd, 0x2a, 0x01, 0x00);
2273                 state->cec_valid_addrs = 0;
2274         }
2275         state->cec_enabled_adap = enable;
2276         return 0;
2277 }
2278
2279 static int adv7842_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
2280 {
2281         struct adv7842_state *state = cec_get_drvdata(adap);
2282         struct v4l2_subdev *sd = &state->sd;
2283         unsigned int i, free_idx = ADV7842_MAX_ADDRS;
2284
2285         if (!state->cec_enabled_adap)
2286                 return addr == CEC_LOG_ADDR_INVALID ? 0 : -EIO;
2287
2288         if (addr == CEC_LOG_ADDR_INVALID) {
2289                 cec_write_clr_set(sd, 0x27, 0x70, 0);
2290                 state->cec_valid_addrs = 0;
2291                 return 0;
2292         }
2293
2294         for (i = 0; i < ADV7842_MAX_ADDRS; i++) {
2295                 bool is_valid = state->cec_valid_addrs & (1 << i);
2296
2297                 if (free_idx == ADV7842_MAX_ADDRS && !is_valid)
2298                         free_idx = i;
2299                 if (is_valid && state->cec_addr[i] == addr)
2300                         return 0;
2301         }
2302         if (i == ADV7842_MAX_ADDRS) {
2303                 i = free_idx;
2304                 if (i == ADV7842_MAX_ADDRS)
2305                         return -ENXIO;
2306         }
2307         state->cec_addr[i] = addr;
2308         state->cec_valid_addrs |= 1 << i;
2309
2310         switch (i) {
2311         case 0:
2312                 /* enable address mask 0 */
2313                 cec_write_clr_set(sd, 0x27, 0x10, 0x10);
2314                 /* set address for mask 0 */
2315                 cec_write_clr_set(sd, 0x28, 0x0f, addr);
2316                 break;
2317         case 1:
2318                 /* enable address mask 1 */
2319                 cec_write_clr_set(sd, 0x27, 0x20, 0x20);
2320                 /* set address for mask 1 */
2321                 cec_write_clr_set(sd, 0x28, 0xf0, addr << 4);
2322                 break;
2323         case 2:
2324                 /* enable address mask 2 */
2325                 cec_write_clr_set(sd, 0x27, 0x40, 0x40);
2326                 /* set address for mask 1 */
2327                 cec_write_clr_set(sd, 0x29, 0x0f, addr);
2328                 break;
2329         }
2330         return 0;
2331 }
2332
2333 static int adv7842_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
2334                                      u32 signal_free_time, struct cec_msg *msg)
2335 {
2336         struct adv7842_state *state = cec_get_drvdata(adap);
2337         struct v4l2_subdev *sd = &state->sd;
2338         u8 len = msg->len;
2339         unsigned int i;
2340
2341         /*
2342          * The number of retries is the number of attempts - 1, but retry
2343          * at least once. It's not clear if a value of 0 is allowed, so
2344          * let's do at least one retry.
2345          */
2346         cec_write_clr_set(sd, 0x12, 0x70, max(1, attempts - 1) << 4);
2347
2348         if (len > 16) {
2349                 v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len);
2350                 return -EINVAL;
2351         }
2352
2353         /* write data */
2354         for (i = 0; i < len; i++)
2355                 cec_write(sd, i, msg->msg[i]);
2356
2357         /* set length (data + header) */
2358         cec_write(sd, 0x10, len);
2359         /* start transmit, enable tx */
2360         cec_write(sd, 0x11, 0x01);
2361         return 0;
2362 }
2363
2364 static const struct cec_adap_ops adv7842_cec_adap_ops = {
2365         .adap_enable = adv7842_cec_adap_enable,
2366         .adap_log_addr = adv7842_cec_adap_log_addr,
2367         .adap_transmit = adv7842_cec_adap_transmit,
2368 };
2369 #endif
2370
2371 static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
2372 {
2373         struct adv7842_state *state = to_state(sd);
2374         u8 fmt_change_cp, fmt_change_digital, fmt_change_sdp;
2375         u8 irq_status[6];
2376
2377         adv7842_irq_enable(sd, false);
2378
2379         /* read status */
2380         irq_status[0] = io_read(sd, 0x43);
2381         irq_status[1] = io_read(sd, 0x57);
2382         irq_status[2] = io_read(sd, 0x70);
2383         irq_status[3] = io_read(sd, 0x75);
2384         irq_status[4] = io_read(sd, 0x9d);
2385         irq_status[5] = io_read(sd, 0x66);
2386
2387         /* and clear */
2388         if (irq_status[0])
2389                 io_write(sd, 0x44, irq_status[0]);
2390         if (irq_status[1])
2391                 io_write(sd, 0x58, irq_status[1]);
2392         if (irq_status[2])
2393                 io_write(sd, 0x71, irq_status[2]);
2394         if (irq_status[3])
2395                 io_write(sd, 0x76, irq_status[3]);
2396         if (irq_status[4])
2397                 io_write(sd, 0x9e, irq_status[4]);
2398         if (irq_status[5])
2399                 io_write(sd, 0x67, irq_status[5]);
2400
2401         adv7842_irq_enable(sd, true);
2402
2403         v4l2_dbg(1, debug, sd, "%s: irq %x, %x, %x, %x, %x, %x\n", __func__,
2404                  irq_status[0], irq_status[1], irq_status[2],
2405                  irq_status[3], irq_status[4], irq_status[5]);
2406
2407         /* format change CP */
2408         fmt_change_cp = irq_status[0] & 0x9c;
2409
2410         /* format change SDP */
2411         if (state->mode == ADV7842_MODE_SDP)
2412                 fmt_change_sdp = (irq_status[1] & 0x30) | (irq_status[4] & 0x09);
2413         else
2414                 fmt_change_sdp = 0;
2415
2416         /* digital format CP */
2417         if (is_digital_input(sd))
2418                 fmt_change_digital = irq_status[3] & 0x03;
2419         else
2420                 fmt_change_digital = 0;
2421
2422         /* format change */
2423         if (fmt_change_cp || fmt_change_digital || fmt_change_sdp) {
2424                 v4l2_dbg(1, debug, sd,
2425                          "%s: fmt_change_cp = 0x%x, fmt_change_digital = 0x%x, fmt_change_sdp = 0x%x\n",
2426                          __func__, fmt_change_cp, fmt_change_digital,
2427                          fmt_change_sdp);
2428                 v4l2_subdev_notify_event(sd, &adv7842_ev_fmt);
2429                 if (handled)
2430                         *handled = true;
2431         }
2432
2433         /* HDMI/DVI mode */
2434         if (irq_status[5] & 0x08) {
2435                 v4l2_dbg(1, debug, sd, "%s: irq %s mode\n", __func__,
2436                          (io_read(sd, 0x65) & 0x08) ? "HDMI" : "DVI");
2437                 set_rgb_quantization_range(sd);
2438                 if (handled)
2439                         *handled = true;
2440         }
2441
2442 #if IS_ENABLED(CONFIG_VIDEO_ADV7842_CEC)
2443         /* cec */
2444         adv7842_cec_isr(sd, handled);
2445 #endif
2446
2447         /* tx 5v detect */
2448         if (irq_status[2] & 0x3) {
2449                 v4l2_dbg(1, debug, sd, "%s: irq tx_5v\n", __func__);
2450                 adv7842_s_detect_tx_5v_ctrl(sd);
2451                 if (handled)
2452                         *handled = true;
2453         }
2454         return 0;
2455 }
2456
2457 static int adv7842_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
2458 {
2459         struct adv7842_state *state = to_state(sd);
2460         u32 blocks = 0;
2461         u8 *data = NULL;
2462
2463         memset(edid->reserved, 0, sizeof(edid->reserved));
2464
2465         switch (edid->pad) {
2466         case ADV7842_EDID_PORT_A:
2467         case ADV7842_EDID_PORT_B:
2468                 if (state->hdmi_edid.present & (0x04 << edid->pad)) {
2469                         data = state->hdmi_edid.edid;
2470                         blocks = state->hdmi_edid.blocks;
2471                 }
2472                 break;
2473         case ADV7842_EDID_PORT_VGA:
2474                 if (state->vga_edid.present) {
2475                         data = state->vga_edid.edid;
2476                         blocks = state->vga_edid.blocks;
2477                 }
2478                 break;
2479         default:
2480                 return -EINVAL;
2481         }
2482
2483         if (edid->start_block == 0 && edid->blocks == 0) {
2484                 edid->blocks = blocks;
2485                 return 0;
2486         }
2487
2488         if (!data)
2489                 return -ENODATA;
2490
2491         if (edid->start_block >= blocks)
2492                 return -EINVAL;
2493
2494         if (edid->start_block + edid->blocks > blocks)
2495                 edid->blocks = blocks - edid->start_block;
2496
2497         memcpy(edid->edid, data + edid->start_block * 128, edid->blocks * 128);
2498
2499         return 0;
2500 }
2501
2502 /*
2503  * If the VGA_EDID_ENABLE bit is set (Repeater Map 0x7f, bit 7), then
2504  * the first two blocks of the EDID are for the HDMI, and the first block
2505  * of segment 1 (i.e. the third block of the EDID) is for VGA.
2506  * So if a VGA EDID is installed, then the maximum size of the HDMI EDID
2507  * is 2 blocks.
2508  */
2509 static int adv7842_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *e)
2510 {
2511         struct adv7842_state *state = to_state(sd);
2512         unsigned int max_blocks = e->pad == ADV7842_EDID_PORT_VGA ? 1 : 4;
2513         int err = 0;
2514
2515         memset(e->reserved, 0, sizeof(e->reserved));
2516
2517         if (e->pad > ADV7842_EDID_PORT_VGA)
2518                 return -EINVAL;
2519         if (e->start_block != 0)
2520                 return -EINVAL;
2521         if (e->pad < ADV7842_EDID_PORT_VGA && state->vga_edid.blocks)
2522                 max_blocks = 2;
2523         if (e->pad == ADV7842_EDID_PORT_VGA && state->hdmi_edid.blocks > 2)
2524                 return -EBUSY;
2525         if (e->blocks > max_blocks) {
2526                 e->blocks = max_blocks;
2527                 return -E2BIG;
2528         }
2529
2530         /* todo, per edid */
2531         if (e->blocks)
2532                 state->aspect_ratio = v4l2_calc_aspect_ratio(e->edid[0x15],
2533                                                              e->edid[0x16]);
2534
2535         switch (e->pad) {
2536         case ADV7842_EDID_PORT_VGA:
2537                 memset(state->vga_edid.edid, 0, sizeof(state->vga_edid.edid));
2538                 state->vga_edid.blocks = e->blocks;
2539                 state->vga_edid.present = e->blocks ? 0x1 : 0x0;
2540                 if (e->blocks)
2541                         memcpy(state->vga_edid.edid, e->edid, 128);
2542                 err = edid_write_vga_segment(sd);
2543                 break;
2544         case ADV7842_EDID_PORT_A:
2545         case ADV7842_EDID_PORT_B:
2546                 memset(state->hdmi_edid.edid, 0, sizeof(state->hdmi_edid.edid));
2547                 state->hdmi_edid.blocks = e->blocks;
2548                 if (e->blocks) {
2549                         state->hdmi_edid.present |= 0x04 << e->pad;
2550                         memcpy(state->hdmi_edid.edid, e->edid, 128 * e->blocks);
2551                 } else {
2552                         state->hdmi_edid.present &= ~(0x04 << e->pad);
2553                         adv7842_s_detect_tx_5v_ctrl(sd);
2554                 }
2555                 err = edid_write_hdmi_segment(sd, e->pad);
2556                 break;
2557         default:
2558                 return -EINVAL;
2559         }
2560         if (err < 0)
2561                 v4l2_err(sd, "error %d writing edid on port %d\n", err, e->pad);
2562         return err;
2563 }
2564
2565 struct adv7842_cfg_read_infoframe {
2566         const char *desc;
2567         u8 present_mask;
2568         u8 head_addr;
2569         u8 payload_addr;
2570 };
2571
2572 static const struct adv7842_cfg_read_infoframe adv7842_cri[] = {
2573         { "AVI", 0x01, 0xe0, 0x00 },
2574         { "Audio", 0x02, 0xe3, 0x1c },
2575         { "SDP", 0x04, 0xe6, 0x2a },
2576         { "Vendor", 0x10, 0xec, 0x54 }
2577 };
2578
2579 static int adv7842_read_infoframe_buf(struct v4l2_subdev *sd, int index,
2580                                       u8 buf[V4L2_DEBUGFS_IF_MAX_LEN])
2581 {
2582         const struct adv7842_cfg_read_infoframe *cri = &adv7842_cri[index];
2583         int len, i;
2584
2585         if (!(io_read(sd, 0x60) & cri->present_mask)) {
2586                 v4l2_dbg(1, debug, sd,
2587                          "%s infoframe not received\n", cri->desc);
2588                 return -ENOENT;
2589         }
2590
2591         for (i = 0; i < 3; i++)
2592                 buf[i] = infoframe_read(sd, cri->head_addr + i);
2593
2594         len = buf[2] + 1;
2595
2596         if (len + 3 > V4L2_DEBUGFS_IF_MAX_LEN) {
2597                 v4l2_err(sd, "%s: invalid %s infoframe length %d\n",
2598                          __func__, cri->desc, len);
2599                 return -ENOENT;
2600         }
2601
2602         for (i = 0; i < len; i++)
2603                 buf[i + 3] = infoframe_read(sd, cri->payload_addr + i);
2604         return len + 3;
2605 }
2606
2607 static void adv7842_log_infoframes(struct v4l2_subdev *sd)
2608 {
2609         struct i2c_client *client = v4l2_get_subdevdata(sd);
2610         struct device *dev = &client->dev;
2611         union hdmi_infoframe frame;
2612         u8 buffer[V4L2_DEBUGFS_IF_MAX_LEN] = {};
2613         int len, i;
2614
2615         if (!(hdmi_read(sd, 0x05) & 0x80)) {
2616                 v4l2_info(sd, "receive DVI-D signal, no infoframes\n");
2617                 return;
2618         }
2619
2620         for (i = 0; i < ARRAY_SIZE(adv7842_cri); i++) {
2621                 len = adv7842_read_infoframe_buf(sd, i, buffer);
2622                 if (len < 0)
2623                         continue;
2624
2625                 if (hdmi_infoframe_unpack(&frame, buffer, len) < 0)
2626                         v4l2_err(sd, "%s: unpack of %s infoframe failed\n",
2627                                  __func__, adv7842_cri[i].desc);
2628                 else
2629                         hdmi_infoframe_log(KERN_INFO, dev, &frame);
2630         }
2631 }
2632
2633 #if 0
2634 /* Let's keep it here for now, as it could be useful for debug */
2635 static const char * const prim_mode_txt[] = {
2636         "SDP",
2637         "Component",
2638         "Graphics",
2639         "Reserved",
2640         "CVBS & HDMI AUDIO",
2641         "HDMI-Comp",
2642         "HDMI-GR",
2643         "Reserved",
2644         "Reserved",
2645         "Reserved",
2646         "Reserved",
2647         "Reserved",
2648         "Reserved",
2649         "Reserved",
2650         "Reserved",
2651         "Reserved",
2652 };
2653 #endif
2654
2655 static int adv7842_sdp_log_status(struct v4l2_subdev *sd)
2656 {
2657         /* SDP (Standard definition processor) block */
2658         u8 sdp_signal_detected = sdp_read(sd, 0x5A) & 0x01;
2659
2660         v4l2_info(sd, "Chip powered %s\n", no_power(sd) ? "off" : "on");
2661         v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x\n",
2662                   io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f);
2663
2664         v4l2_info(sd, "SDP: free run: %s\n",
2665                 (sdp_read(sd, 0x56) & 0x01) ? "on" : "off");
2666         v4l2_info(sd, "SDP: %s\n", sdp_signal_detected ?
2667                 "valid SD/PR signal detected" : "invalid/no signal");
2668         if (sdp_signal_detected) {
2669                 static const char * const sdp_std_txt[] = {
2670                         "NTSC-M/J",
2671                         "1?",
2672                         "NTSC-443",
2673                         "60HzSECAM",
2674                         "PAL-M",
2675                         "5?",
2676                         "PAL-60",
2677                         "7?", "8?", "9?", "a?", "b?",
2678                         "PAL-CombN",
2679                         "d?",
2680                         "PAL-BGHID",
2681                         "SECAM"
2682                 };
2683                 v4l2_info(sd, "SDP: standard %s\n",
2684                         sdp_std_txt[sdp_read(sd, 0x52) & 0x0f]);
2685                 v4l2_info(sd, "SDP: %s\n",
2686                         (sdp_read(sd, 0x59) & 0x08) ? "50Hz" : "60Hz");
2687                 v4l2_info(sd, "SDP: %s\n",
2688                         (sdp_read(sd, 0x57) & 0x08) ? "Interlaced" : "Progressive");
2689                 v4l2_info(sd, "SDP: deinterlacer %s\n",
2690                         (sdp_read(sd, 0x12) & 0x08) ? "enabled" : "disabled");
2691                 v4l2_info(sd, "SDP: csc %s mode\n",
2692                         (sdp_io_read(sd, 0xe0) & 0x40) ? "auto" : "manual");
2693         }
2694         return 0;
2695 }
2696
2697 static int adv7842_cp_log_status(struct v4l2_subdev *sd)
2698 {
2699         /* CP block */
2700         struct adv7842_state *state = to_state(sd);
2701         struct v4l2_dv_timings timings;
2702         u8 reg_io_0x02 = io_read(sd, 0x02);
2703         u8 reg_io_0x21 = io_read(sd, 0x21);
2704         u8 reg_rep_0x77 = rep_read(sd, 0x77);
2705         u8 reg_rep_0x7d = rep_read(sd, 0x7d);
2706         bool audio_pll_locked = hdmi_read(sd, 0x04) & 0x01;
2707         bool audio_sample_packet_detect = hdmi_read(sd, 0x18) & 0x01;
2708         bool audio_mute = io_read(sd, 0x65) & 0x40;
2709
2710         static const char * const csc_coeff_sel_rb[16] = {
2711                 "bypassed", "YPbPr601 -> RGB", "reserved", "YPbPr709 -> RGB",
2712                 "reserved", "RGB -> YPbPr601", "reserved", "RGB -> YPbPr709",
2713                 "reserved", "YPbPr709 -> YPbPr601", "YPbPr601 -> YPbPr709",
2714                 "reserved", "reserved", "reserved", "reserved", "manual"
2715         };
2716         static const char * const input_color_space_txt[16] = {
2717                 "RGB limited range (16-235)", "RGB full range (0-255)",
2718                 "YCbCr Bt.601 (16-235)", "YCbCr Bt.709 (16-235)",
2719                 "xvYCC Bt.601", "xvYCC Bt.709",
2720                 "YCbCr Bt.601 (0-255)", "YCbCr Bt.709 (0-255)",
2721                 "invalid", "invalid", "invalid", "invalid", "invalid",
2722                 "invalid", "invalid", "automatic"
2723         };
2724         static const char * const rgb_quantization_range_txt[] = {
2725                 "Automatic",
2726                 "RGB limited range (16-235)",
2727                 "RGB full range (0-255)",
2728         };
2729         static const char * const deep_color_mode_txt[4] = {
2730                 "8-bits per channel",
2731                 "10-bits per channel",
2732                 "12-bits per channel",
2733                 "16-bits per channel (not supported)"
2734         };
2735
2736         v4l2_info(sd, "-----Chip status-----\n");
2737         v4l2_info(sd, "Chip power: %s\n", no_power(sd) ? "off" : "on");
2738         v4l2_info(sd, "HDMI/DVI-D port selected: %s\n",
2739                         state->hdmi_port_a ? "A" : "B");
2740         v4l2_info(sd, "EDID A %s, B %s\n",
2741                   ((reg_rep_0x7d & 0x04) && (reg_rep_0x77 & 0x04)) ?
2742                   "enabled" : "disabled",
2743                   ((reg_rep_0x7d & 0x08) && (reg_rep_0x77 & 0x08)) ?
2744                   "enabled" : "disabled");
2745         v4l2_info(sd, "HPD A %s, B %s\n",
2746                   reg_io_0x21 & 0x02 ? "enabled" : "disabled",
2747                   reg_io_0x21 & 0x01 ? "enabled" : "disabled");
2748         v4l2_info(sd, "CEC: %s\n", state->cec_enabled_adap ?
2749                         "enabled" : "disabled");
2750         if (state->cec_enabled_adap) {
2751                 int i;
2752
2753                 for (i = 0; i < ADV7842_MAX_ADDRS; i++) {
2754                         bool is_valid = state->cec_valid_addrs & (1 << i);
2755
2756                         if (is_valid)
2757                                 v4l2_info(sd, "CEC Logical Address: 0x%x\n",
2758                                           state->cec_addr[i]);
2759                 }
2760         }
2761
2762         v4l2_info(sd, "-----Signal status-----\n");
2763         if (state->hdmi_port_a) {
2764                 v4l2_info(sd, "Cable detected (+5V power): %s\n",
2765                           io_read(sd, 0x6f) & 0x02 ? "true" : "false");
2766                 v4l2_info(sd, "TMDS signal detected: %s\n",
2767                           (io_read(sd, 0x6a) & 0x02) ? "true" : "false");
2768                 v4l2_info(sd, "TMDS signal locked: %s\n",
2769                           (io_read(sd, 0x6a) & 0x20) ? "true" : "false");
2770         } else {
2771                 v4l2_info(sd, "Cable detected (+5V power):%s\n",
2772                           io_read(sd, 0x6f) & 0x01 ? "true" : "false");
2773                 v4l2_info(sd, "TMDS signal detected: %s\n",
2774                           (io_read(sd, 0x6a) & 0x01) ? "true" : "false");
2775                 v4l2_info(sd, "TMDS signal locked: %s\n",
2776                           (io_read(sd, 0x6a) & 0x10) ? "true" : "false");
2777         }
2778         v4l2_info(sd, "CP free run: %s\n",
2779                   (!!(cp_read(sd, 0xff) & 0x10) ? "on" : "off"));
2780         v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x, v_freq = 0x%x\n",
2781                   io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f,
2782                   (io_read(sd, 0x01) & 0x70) >> 4);
2783
2784         v4l2_info(sd, "-----Video Timings-----\n");
2785         if (no_cp_signal(sd)) {
2786                 v4l2_info(sd, "STDI: not locked\n");
2787         } else {
2788                 u32 bl = ((cp_read(sd, 0xb1) & 0x3f) << 8) | cp_read(sd, 0xb2);
2789                 u32 lcf = ((cp_read(sd, 0xb3) & 0x7) << 8) | cp_read(sd, 0xb4);
2790                 u32 lcvs = cp_read(sd, 0xb3) >> 3;
2791                 u32 fcl = ((cp_read(sd, 0xb8) & 0x1f) << 8) | cp_read(sd, 0xb9);
2792                 char hs_pol = ((cp_read(sd, 0xb5) & 0x10) ?
2793                                 ((cp_read(sd, 0xb5) & 0x08) ? '+' : '-') : 'x');
2794                 char vs_pol = ((cp_read(sd, 0xb5) & 0x40) ?
2795                                 ((cp_read(sd, 0xb5) & 0x20) ? '+' : '-') : 'x');
2796                 v4l2_info(sd,
2797                         "STDI: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, fcl = %d, %s, %chsync, %cvsync\n",
2798                         lcf, bl, lcvs, fcl,
2799                         (cp_read(sd, 0xb1) & 0x40) ?
2800                                 "interlaced" : "progressive",
2801                         hs_pol, vs_pol);
2802         }
2803         if (adv7842_query_dv_timings(sd, 0, &timings))
2804                 v4l2_info(sd, "No video detected\n");
2805         else
2806                 v4l2_print_dv_timings(sd->name, "Detected format: ",
2807                                       &timings, true);
2808         v4l2_print_dv_timings(sd->name, "Configured format: ",
2809                         &state->timings, true);
2810
2811         if (no_cp_signal(sd))
2812                 return 0;
2813
2814         v4l2_info(sd, "-----Color space-----\n");
2815         v4l2_info(sd, "RGB quantization range ctrl: %s\n",
2816                   rgb_quantization_range_txt[state->rgb_quantization_range]);
2817         v4l2_info(sd, "Input color space: %s\n",
2818                   input_color_space_txt[reg_io_0x02 >> 4]);
2819         v4l2_info(sd, "Output color space: %s %s, alt-gamma %s\n",
2820                   (reg_io_0x02 & 0x02) ? "RGB" : "YCbCr",
2821                   (((reg_io_0x02 >> 2) & 0x01) ^ (reg_io_0x02 & 0x01)) ?
2822                         "(16-235)" : "(0-255)",
2823                   (reg_io_0x02 & 0x08) ? "enabled" : "disabled");
2824         v4l2_info(sd, "Color space conversion: %s\n",
2825                   csc_coeff_sel_rb[cp_read(sd, 0xf4) >> 4]);
2826
2827         if (!is_digital_input(sd))
2828                 return 0;
2829
2830         v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
2831         v4l2_info(sd, "HDCP encrypted content: %s\n",
2832                         (hdmi_read(sd, 0x05) & 0x40) ? "true" : "false");
2833         v4l2_info(sd, "HDCP keys read: %s%s\n",
2834                         (hdmi_read(sd, 0x04) & 0x20) ? "yes" : "no",
2835                         (hdmi_read(sd, 0x04) & 0x10) ? "ERROR" : "");
2836         if (!is_hdmi(sd))
2837                 return 0;
2838
2839         v4l2_info(sd, "Audio: pll %s, samples %s, %s\n",
2840                         audio_pll_locked ? "locked" : "not locked",
2841                         audio_sample_packet_detect ? "detected" : "not detected",
2842                         audio_mute ? "muted" : "enabled");
2843         if (audio_pll_locked && audio_sample_packet_detect) {
2844                 v4l2_info(sd, "Audio format: %s\n",
2845                         (hdmi_read(sd, 0x07) & 0x40) ? "multi-channel" : "stereo");
2846         }
2847         v4l2_info(sd, "Audio CTS: %u\n", (hdmi_read(sd, 0x5b) << 12) +
2848                         (hdmi_read(sd, 0x5c) << 8) +
2849                         (hdmi_read(sd, 0x5d) & 0xf0));
2850         v4l2_info(sd, "Audio N: %u\n", ((hdmi_read(sd, 0x5d) & 0x0f) << 16) +
2851                         (hdmi_read(sd, 0x5e) << 8) +
2852                         hdmi_read(sd, 0x5f));
2853         v4l2_info(sd, "AV Mute: %s\n",
2854                         (hdmi_read(sd, 0x04) & 0x40) ? "on" : "off");
2855         v4l2_info(sd, "Deep color mode: %s\n",
2856                         deep_color_mode_txt[hdmi_read(sd, 0x0b) >> 6]);
2857
2858         adv7842_log_infoframes(sd);
2859
2860         return 0;
2861 }
2862
2863 static int adv7842_log_status(struct v4l2_subdev *sd)
2864 {
2865         struct adv7842_state *state = to_state(sd);
2866
2867         if (state->mode == ADV7842_MODE_SDP)
2868                 return adv7842_sdp_log_status(sd);
2869         return adv7842_cp_log_status(sd);
2870 }
2871
2872 static int adv7842_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
2873 {
2874         struct adv7842_state *state = to_state(sd);
2875
2876         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2877
2878         if (state->mode != ADV7842_MODE_SDP)
2879                 return -ENODATA;
2880
2881         if (!(sdp_read(sd, 0x5A) & 0x01)) {
2882                 *std = 0;
2883                 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
2884                 return 0;
2885         }
2886
2887         switch (sdp_read(sd, 0x52) & 0x0f) {
2888         case 0:
2889                 /* NTSC-M/J */
2890                 *std &= V4L2_STD_NTSC;
2891                 break;
2892         case 2:
2893                 /* NTSC-443 */
2894                 *std &= V4L2_STD_NTSC_443;
2895                 break;
2896         case 3:
2897                 /* 60HzSECAM */
2898                 *std &= V4L2_STD_SECAM;
2899                 break;
2900         case 4:
2901                 /* PAL-M */
2902                 *std &= V4L2_STD_PAL_M;
2903                 break;
2904         case 6:
2905                 /* PAL-60 */
2906                 *std &= V4L2_STD_PAL_60;
2907                 break;
2908         case 0xc:
2909                 /* PAL-CombN */
2910                 *std &= V4L2_STD_PAL_Nc;
2911                 break;
2912         case 0xe:
2913                 /* PAL-BGHID */
2914                 *std &= V4L2_STD_PAL;
2915                 break;
2916         case 0xf:
2917                 /* SECAM */
2918                 *std &= V4L2_STD_SECAM;
2919                 break;
2920         default:
2921                 *std &= V4L2_STD_ALL;
2922                 break;
2923         }
2924         return 0;
2925 }
2926
2927 static void adv7842_s_sdp_io(struct v4l2_subdev *sd, struct adv7842_sdp_io_sync_adjustment *s)
2928 {
2929         if (s && s->adjust) {
2930                 sdp_io_write(sd, 0x94, (s->hs_beg >> 8) & 0xf);
2931                 sdp_io_write(sd, 0x95, s->hs_beg & 0xff);
2932                 sdp_io_write(sd, 0x96, (s->hs_width >> 8) & 0xf);
2933                 sdp_io_write(sd, 0x97, s->hs_width & 0xff);
2934                 sdp_io_write(sd, 0x98, (s->de_beg >> 8) & 0xf);
2935                 sdp_io_write(sd, 0x99, s->de_beg & 0xff);
2936                 sdp_io_write(sd, 0x9a, (s->de_end >> 8) & 0xf);
2937                 sdp_io_write(sd, 0x9b, s->de_end & 0xff);
2938                 sdp_io_write(sd, 0xa8, s->vs_beg_o);
2939                 sdp_io_write(sd, 0xa9, s->vs_beg_e);
2940                 sdp_io_write(sd, 0xaa, s->vs_end_o);
2941                 sdp_io_write(sd, 0xab, s->vs_end_e);
2942                 sdp_io_write(sd, 0xac, s->de_v_beg_o);
2943                 sdp_io_write(sd, 0xad, s->de_v_beg_e);
2944                 sdp_io_write(sd, 0xae, s->de_v_end_o);
2945                 sdp_io_write(sd, 0xaf, s->de_v_end_e);
2946         } else {
2947                 /* set to default */
2948                 sdp_io_write(sd, 0x94, 0x00);
2949                 sdp_io_write(sd, 0x95, 0x00);
2950                 sdp_io_write(sd, 0x96, 0x00);
2951                 sdp_io_write(sd, 0x97, 0x20);
2952                 sdp_io_write(sd, 0x98, 0x00);
2953                 sdp_io_write(sd, 0x99, 0x00);
2954                 sdp_io_write(sd, 0x9a, 0x00);
2955                 sdp_io_write(sd, 0x9b, 0x00);
2956                 sdp_io_write(sd, 0xa8, 0x04);
2957                 sdp_io_write(sd, 0xa9, 0x04);
2958                 sdp_io_write(sd, 0xaa, 0x04);
2959                 sdp_io_write(sd, 0xab, 0x04);
2960                 sdp_io_write(sd, 0xac, 0x04);
2961                 sdp_io_write(sd, 0xad, 0x04);
2962                 sdp_io_write(sd, 0xae, 0x04);
2963                 sdp_io_write(sd, 0xaf, 0x04);
2964         }
2965 }
2966
2967 static int adv7842_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
2968 {
2969         struct adv7842_state *state = to_state(sd);
2970         struct adv7842_platform_data *pdata = &state->pdata;
2971
2972         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2973
2974         if (state->mode != ADV7842_MODE_SDP)
2975                 return -ENODATA;
2976
2977         if (norm & V4L2_STD_625_50)
2978                 adv7842_s_sdp_io(sd, &pdata->sdp_io_sync_625);
2979         else if (norm & V4L2_STD_525_60)
2980                 adv7842_s_sdp_io(sd, &pdata->sdp_io_sync_525);
2981         else
2982                 adv7842_s_sdp_io(sd, NULL);
2983
2984         if (norm & V4L2_STD_ALL) {
2985                 state->norm = norm;
2986                 return 0;
2987         }
2988         return -EINVAL;
2989 }
2990
2991 static int adv7842_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
2992 {
2993         struct adv7842_state *state = to_state(sd);
2994
2995         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2996
2997         if (state->mode != ADV7842_MODE_SDP)
2998                 return -ENODATA;
2999
3000         *norm = state->norm;
3001         return 0;
3002 }
3003
3004 /* ----------------------------------------------------------------------- */
3005
3006 static int adv7842_core_init(struct v4l2_subdev *sd)
3007 {
3008         struct adv7842_state *state = to_state(sd);
3009         struct adv7842_platform_data *pdata = &state->pdata;
3010         hdmi_write(sd, 0x48,
3011                    (pdata->disable_pwrdnb ? 0x80 : 0) |
3012                    (pdata->disable_cable_det_rst ? 0x40 : 0));
3013
3014         disable_input(sd);
3015
3016         /*
3017          * Disable I2C access to internal EDID ram from HDMI DDC ports
3018          * Disable auto edid enable when leaving powerdown mode
3019          */
3020         rep_write_and_or(sd, 0x77, 0xd3, 0x20);
3021
3022         /* power */
3023         io_write(sd, 0x0c, 0x42);   /* Power up part and power down VDP */
3024         io_write(sd, 0x15, 0x80);   /* Power up pads */
3025
3026         /* video format */
3027         io_write(sd, 0x02, 0xf0 | pdata->alt_gamma << 3);
3028         io_write_and_or(sd, 0x05, 0xf0, pdata->blank_data << 3 |
3029                         pdata->insert_av_codes << 2 |
3030                         pdata->replicate_av_codes << 1);
3031         adv7842_setup_format(state);
3032
3033         /* HDMI audio */
3034         hdmi_write_and_or(sd, 0x1a, 0xf1, 0x08); /* Wait 1 s before unmute */
3035
3036         /* Drive strength */
3037         io_write_and_or(sd, 0x14, 0xc0,
3038                         pdata->dr_str_data << 4 |
3039                         pdata->dr_str_clk << 2 |
3040                         pdata->dr_str_sync);
3041
3042         /* HDMI free run */
3043         cp_write_and_or(sd, 0xba, 0xfc, pdata->hdmi_free_run_enable |
3044                                         (pdata->hdmi_free_run_mode << 1));
3045
3046         /* SPD free run */
3047         sdp_write_and_or(sd, 0xdd, 0xf0, pdata->sdp_free_run_force |
3048                                          (pdata->sdp_free_run_cbar_en << 1) |
3049                                          (pdata->sdp_free_run_man_col_en << 2) |
3050                                          (pdata->sdp_free_run_auto << 3));
3051
3052         /* TODO from platform data */
3053         cp_write(sd, 0x69, 0x14);   /* Enable CP CSC */
3054         io_write(sd, 0x06, 0xa6);   /* positive VS and HS and DE */
3055         cp_write(sd, 0xf3, 0xdc); /* Low threshold to enter/exit free run mode */
3056         afe_write(sd, 0xb5, 0x01);  /* Setting MCLK to 256Fs */
3057
3058         afe_write(sd, 0x02, pdata->ain_sel); /* Select analog input muxing mode */
3059         io_write_and_or(sd, 0x30, ~(1 << 4), pdata->output_bus_lsb_to_msb << 4);
3060
3061         sdp_csc_coeff(sd, &pdata->sdp_csc_coeff);
3062
3063         /* todo, improve settings for sdram */
3064         if (pdata->sd_ram_size >= 128) {
3065                 sdp_write(sd, 0x12, 0x0d); /* Frame TBC,3D comb enabled */
3066                 if (pdata->sd_ram_ddr) {
3067                         /* SDP setup for the AD eval board */
3068                         sdp_io_write(sd, 0x6f, 0x00); /* DDR mode */
3069                         sdp_io_write(sd, 0x75, 0x0a); /* 128 MB memory size */
3070                         sdp_io_write(sd, 0x7a, 0xa5); /* Timing Adjustment */
3071                         sdp_io_write(sd, 0x7b, 0x8f); /* Timing Adjustment */
3072                         sdp_io_write(sd, 0x60, 0x01); /* SDRAM reset */
3073                 } else {
3074                         sdp_io_write(sd, 0x75, 0x0a); /* 64 MB memory size ?*/
3075                         sdp_io_write(sd, 0x74, 0x00); /* must be zero for sdr sdram */
3076                         sdp_io_write(sd, 0x79, 0x33); /* CAS latency to 3,
3077                                                          depends on memory */
3078                         sdp_io_write(sd, 0x6f, 0x01); /* SDR mode */
3079                         sdp_io_write(sd, 0x7a, 0xa5); /* Timing Adjustment */
3080                         sdp_io_write(sd, 0x7b, 0x8f); /* Timing Adjustment */
3081                         sdp_io_write(sd, 0x60, 0x01); /* SDRAM reset */
3082                 }
3083         } else {
3084                 /*
3085                  * Manual UG-214, rev 0 is bit confusing on this bit
3086                  * but a '1' disables any signal if the Ram is active.
3087                  */
3088                 sdp_io_write(sd, 0x29, 0x10); /* Tristate memory interface */
3089         }
3090
3091         select_input(sd, pdata->vid_std_select);
3092
3093         enable_input(sd);
3094
3095         if (pdata->hpa_auto) {
3096                 /* HPA auto, HPA 0.5s after Edid set and Cable detect */
3097                 hdmi_write(sd, 0x69, 0x5c);
3098         } else {
3099                 /* HPA manual */
3100                 hdmi_write(sd, 0x69, 0xa3);
3101                 /* HPA disable on port A and B */
3102                 io_write_and_or(sd, 0x20, 0xcf, 0x00);
3103         }
3104
3105         /* LLC */
3106         io_write(sd, 0x19, 0x80 | pdata->llc_dll_phase);
3107         io_write(sd, 0x33, 0x40);
3108
3109         /* interrupts */
3110         io_write(sd, 0x40, 0xf2); /* Configure INT1 */
3111
3112         adv7842_irq_enable(sd, true);
3113
3114         return v4l2_ctrl_handler_setup(sd->ctrl_handler);
3115 }
3116
3117 /* ----------------------------------------------------------------------- */
3118
3119 static int adv7842_ddr_ram_test(struct v4l2_subdev *sd)
3120 {
3121         /*
3122          * From ADV784x external Memory test.pdf
3123          *
3124          * Reset must just been performed before running test.
3125          * Recommended to reset after test.
3126          */
3127         int i;
3128         int pass = 0;
3129         int fail = 0;
3130         int complete = 0;
3131
3132         io_write(sd, 0x00, 0x01);  /* Program SDP 4x1 */
3133         io_write(sd, 0x01, 0x00);  /* Program SDP mode */
3134         afe_write(sd, 0x80, 0x92); /* SDP Recommended Write */
3135         afe_write(sd, 0x9B, 0x01); /* SDP Recommended Write ADV7844ES1 */
3136         afe_write(sd, 0x9C, 0x60); /* SDP Recommended Write ADV7844ES1 */
3137         afe_write(sd, 0x9E, 0x02); /* SDP Recommended Write ADV7844ES1 */
3138         afe_write(sd, 0xA0, 0x0B); /* SDP Recommended Write ADV7844ES1 */
3139         afe_write(sd, 0xC3, 0x02); /* Memory BIST Initialisation */
3140         io_write(sd, 0x0C, 0x40);  /* Power up ADV7844 */
3141         io_write(sd, 0x15, 0xBA);  /* Enable outputs */
3142         sdp_write(sd, 0x12, 0x00); /* Disable 3D comb, Frame TBC & 3DNR */
3143         io_write(sd, 0xFF, 0x04);  /* Reset memory controller */
3144
3145         usleep_range(5000, 6000);
3146
3147         sdp_write(sd, 0x12, 0x00);    /* Disable 3D Comb, Frame TBC & 3DNR */
3148         sdp_io_write(sd, 0x2A, 0x01); /* Memory BIST Initialisation */
3149         sdp_io_write(sd, 0x7c, 0x19); /* Memory BIST Initialisation */
3150         sdp_io_write(sd, 0x80, 0x87); /* Memory BIST Initialisation */
3151         sdp_io_write(sd, 0x81, 0x4a); /* Memory BIST Initialisation */
3152         sdp_io_write(sd, 0x82, 0x2c); /* Memory BIST Initialisation */
3153         sdp_io_write(sd, 0x83, 0x0e); /* Memory BIST Initialisation */
3154         sdp_io_write(sd, 0x84, 0x94); /* Memory BIST Initialisation */
3155         sdp_io_write(sd, 0x85, 0x62); /* Memory BIST Initialisation */
3156         sdp_io_write(sd, 0x7d, 0x00); /* Memory BIST Initialisation */
3157         sdp_io_write(sd, 0x7e, 0x1a); /* Memory BIST Initialisation */
3158
3159         usleep_range(5000, 6000);
3160
3161         sdp_io_write(sd, 0xd9, 0xd5); /* Enable BIST Test */
3162         sdp_write(sd, 0x12, 0x05); /* Enable FRAME TBC & 3D COMB */
3163
3164         msleep(20);
3165
3166         for (i = 0; i < 10; i++) {
3167                 u8 result = sdp_io_read(sd, 0xdb);
3168                 if (result & 0x10) {
3169                         complete++;
3170                         if (result & 0x20)
3171                                 fail++;
3172                         else
3173                                 pass++;
3174                 }
3175                 msleep(20);
3176         }
3177
3178         v4l2_dbg(1, debug, sd,
3179                 "Ram Test: completed %d of %d: pass %d, fail %d\n",
3180                 complete, i, pass, fail);
3181
3182         if (!complete || fail)
3183                 return -EIO;
3184         return 0;
3185 }
3186
3187 static void adv7842_rewrite_i2c_addresses(struct v4l2_subdev *sd,
3188                 struct adv7842_platform_data *pdata)
3189 {
3190         io_write(sd, 0xf1, pdata->i2c_sdp << 1);
3191         io_write(sd, 0xf2, pdata->i2c_sdp_io << 1);
3192         io_write(sd, 0xf3, pdata->i2c_avlink << 1);
3193         io_write(sd, 0xf4, pdata->i2c_cec << 1);
3194         io_write(sd, 0xf5, pdata->i2c_infoframe << 1);
3195
3196         io_write(sd, 0xf8, pdata->i2c_afe << 1);
3197         io_write(sd, 0xf9, pdata->i2c_repeater << 1);
3198         io_write(sd, 0xfa, pdata->i2c_edid << 1);
3199         io_write(sd, 0xfb, pdata->i2c_hdmi << 1);
3200
3201         io_write(sd, 0xfd, pdata->i2c_cp << 1);
3202         io_write(sd, 0xfe, pdata->i2c_vdp << 1);
3203 }
3204
3205 static int adv7842_command_ram_test(struct v4l2_subdev *sd)
3206 {
3207         struct i2c_client *client = v4l2_get_subdevdata(sd);
3208         struct adv7842_state *state = to_state(sd);
3209         struct adv7842_platform_data *pdata = client->dev.platform_data;
3210         struct v4l2_dv_timings timings;
3211         int ret = 0;
3212
3213         if (!pdata)
3214                 return -ENODEV;
3215
3216         if (!pdata->sd_ram_size || !pdata->sd_ram_ddr) {
3217                 v4l2_info(sd, "no sdram or no ddr sdram\n");
3218                 return -EINVAL;
3219         }
3220
3221         main_reset(sd);
3222
3223         adv7842_rewrite_i2c_addresses(sd, pdata);
3224
3225         /* run ram test */
3226         ret = adv7842_ddr_ram_test(sd);
3227
3228         main_reset(sd);
3229
3230         adv7842_rewrite_i2c_addresses(sd, pdata);
3231
3232         /* and re-init chip and state */
3233         adv7842_core_init(sd);
3234
3235         disable_input(sd);
3236
3237         select_input(sd, state->vid_std_select);
3238
3239         enable_input(sd);
3240
3241         edid_write_vga_segment(sd);
3242         edid_write_hdmi_segment(sd, ADV7842_EDID_PORT_A);
3243         edid_write_hdmi_segment(sd, ADV7842_EDID_PORT_B);
3244
3245         timings = state->timings;
3246
3247         memset(&state->timings, 0, sizeof(struct v4l2_dv_timings));
3248
3249         adv7842_s_dv_timings(sd, 0, &timings);
3250
3251         return ret;
3252 }
3253
3254 static long adv7842_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
3255 {
3256         switch (cmd) {
3257         case ADV7842_CMD_RAM_TEST:
3258                 return adv7842_command_ram_test(sd);
3259         }
3260         return -ENOTTY;
3261 }
3262
3263 static int adv7842_subscribe_event(struct v4l2_subdev *sd,
3264                                    struct v4l2_fh *fh,
3265                                    struct v4l2_event_subscription *sub)
3266 {
3267         switch (sub->type) {
3268         case V4L2_EVENT_SOURCE_CHANGE:
3269                 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
3270         case V4L2_EVENT_CTRL:
3271                 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
3272         default:
3273                 return -EINVAL;
3274         }
3275 }
3276
3277 static ssize_t
3278 adv7842_debugfs_if_read(u32 type, void *priv, struct file *filp,
3279                         char __user *ubuf, size_t count, loff_t *ppos)
3280 {
3281         u8 buf[V4L2_DEBUGFS_IF_MAX_LEN] = {};
3282         struct v4l2_subdev *sd = priv;
3283         int index;
3284         int len;
3285
3286         if (!is_hdmi(sd))
3287                 return 0;
3288
3289         switch (type) {
3290         case V4L2_DEBUGFS_IF_AVI:
3291                 index = 0;
3292                 break;
3293         case V4L2_DEBUGFS_IF_AUDIO:
3294                 index = 1;
3295                 break;
3296         case V4L2_DEBUGFS_IF_SPD:
3297                 index = 2;
3298                 break;
3299         case V4L2_DEBUGFS_IF_HDMI:
3300                 index = 3;
3301                 break;
3302         default:
3303                 return 0;
3304         }
3305
3306         len = adv7842_read_infoframe_buf(sd, index, buf);
3307         if (len > 0)
3308                 len = simple_read_from_buffer(ubuf, count, ppos, buf, len);
3309         return len < 0 ? 0 : len;
3310 }
3311
3312 static int adv7842_registered(struct v4l2_subdev *sd)
3313 {
3314         struct adv7842_state *state = to_state(sd);
3315         struct i2c_client *client = v4l2_get_subdevdata(sd);
3316         int err;
3317
3318         err = cec_register_adapter(state->cec_adap, &client->dev);
3319         if (err) {
3320                 cec_delete_adapter(state->cec_adap);
3321         } else {
3322                 state->debugfs_dir = debugfs_create_dir(sd->name, v4l2_debugfs_root());
3323                 state->infoframes = v4l2_debugfs_if_alloc(state->debugfs_dir,
3324                         V4L2_DEBUGFS_IF_AVI | V4L2_DEBUGFS_IF_AUDIO |
3325                         V4L2_DEBUGFS_IF_SPD | V4L2_DEBUGFS_IF_HDMI, sd,
3326                         adv7842_debugfs_if_read);
3327         }
3328         return err;
3329 }
3330
3331 static void adv7842_unregistered(struct v4l2_subdev *sd)
3332 {
3333         struct adv7842_state *state = to_state(sd);
3334
3335         cec_unregister_adapter(state->cec_adap);
3336         v4l2_debugfs_if_free(state->infoframes);
3337         state->infoframes = NULL;
3338         debugfs_remove_recursive(state->debugfs_dir);
3339         state->debugfs_dir = NULL;
3340 }
3341
3342 /* ----------------------------------------------------------------------- */
3343
3344 static const struct v4l2_ctrl_ops adv7842_ctrl_ops = {
3345         .s_ctrl = adv7842_s_ctrl,
3346         .g_volatile_ctrl = adv7842_g_volatile_ctrl,
3347 };
3348
3349 static const struct v4l2_subdev_core_ops adv7842_core_ops = {
3350         .log_status = adv7842_log_status,
3351         .ioctl = adv7842_ioctl,
3352         .interrupt_service_routine = adv7842_isr,
3353         .subscribe_event = adv7842_subscribe_event,
3354         .unsubscribe_event = v4l2_event_subdev_unsubscribe,
3355 #ifdef CONFIG_VIDEO_ADV_DEBUG
3356         .g_register = adv7842_g_register,
3357         .s_register = adv7842_s_register,
3358 #endif
3359 };
3360
3361 static const struct v4l2_subdev_video_ops adv7842_video_ops = {
3362         .g_std = adv7842_g_std,
3363         .s_std = adv7842_s_std,
3364         .s_routing = adv7842_s_routing,
3365         .querystd = adv7842_querystd,
3366         .g_input_status = adv7842_g_input_status,
3367 };
3368
3369 static const struct v4l2_subdev_pad_ops adv7842_pad_ops = {
3370         .enum_mbus_code = adv7842_enum_mbus_code,
3371         .get_fmt = adv7842_get_format,
3372         .set_fmt = adv7842_set_format,
3373         .get_edid = adv7842_get_edid,
3374         .set_edid = adv7842_set_edid,
3375         .s_dv_timings = adv7842_s_dv_timings,
3376         .g_dv_timings = adv7842_g_dv_timings,
3377         .query_dv_timings = adv7842_query_dv_timings,
3378         .enum_dv_timings = adv7842_enum_dv_timings,
3379         .dv_timings_cap = adv7842_dv_timings_cap,
3380 };
3381
3382 static const struct v4l2_subdev_ops adv7842_ops = {
3383         .core = &adv7842_core_ops,
3384         .video = &adv7842_video_ops,
3385         .pad = &adv7842_pad_ops,
3386 };
3387
3388 static const struct v4l2_subdev_internal_ops adv7842_int_ops = {
3389         .registered = adv7842_registered,
3390         .unregistered = adv7842_unregistered,
3391 };
3392
3393 /* -------------------------- custom ctrls ---------------------------------- */
3394
3395 static const struct v4l2_ctrl_config adv7842_ctrl_analog_sampling_phase = {
3396         .ops = &adv7842_ctrl_ops,
3397         .id = V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE,
3398         .name = "Analog Sampling Phase",
3399         .type = V4L2_CTRL_TYPE_INTEGER,
3400         .min = 0,
3401         .max = 0x1f,
3402         .step = 1,
3403         .def = 0,
3404 };
3405
3406 static const struct v4l2_ctrl_config adv7842_ctrl_free_run_color_manual = {
3407         .ops = &adv7842_ctrl_ops,
3408         .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL,
3409         .name = "Free Running Color, Manual",
3410         .type = V4L2_CTRL_TYPE_BOOLEAN,
3411         .max = 1,
3412         .step = 1,
3413         .def = 1,
3414 };
3415
3416 static const struct v4l2_ctrl_config adv7842_ctrl_free_run_color = {
3417         .ops = &adv7842_ctrl_ops,
3418         .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR,
3419         .name = "Free Running Color",
3420         .type = V4L2_CTRL_TYPE_INTEGER,
3421         .max = 0xffffff,
3422         .step = 0x1,
3423 };
3424
3425
3426 static void adv7842_unregister_clients(struct v4l2_subdev *sd)
3427 {
3428         struct adv7842_state *state = to_state(sd);
3429         i2c_unregister_device(state->i2c_avlink);
3430         i2c_unregister_device(state->i2c_cec);
3431         i2c_unregister_device(state->i2c_infoframe);
3432         i2c_unregister_device(state->i2c_sdp_io);
3433         i2c_unregister_device(state->i2c_sdp);
3434         i2c_unregister_device(state->i2c_afe);
3435         i2c_unregister_device(state->i2c_repeater);
3436         i2c_unregister_device(state->i2c_edid);
3437         i2c_unregister_device(state->i2c_hdmi);
3438         i2c_unregister_device(state->i2c_cp);
3439         i2c_unregister_device(state->i2c_vdp);
3440
3441         state->i2c_avlink = NULL;
3442         state->i2c_cec = NULL;
3443         state->i2c_infoframe = NULL;
3444         state->i2c_sdp_io = NULL;
3445         state->i2c_sdp = NULL;
3446         state->i2c_afe = NULL;
3447         state->i2c_repeater = NULL;
3448         state->i2c_edid = NULL;
3449         state->i2c_hdmi = NULL;
3450         state->i2c_cp = NULL;
3451         state->i2c_vdp = NULL;
3452 }
3453
3454 static struct i2c_client *adv7842_dummy_client(struct v4l2_subdev *sd, const char *desc,
3455                                                u8 addr, u8 io_reg)
3456 {
3457         struct i2c_client *client = v4l2_get_subdevdata(sd);
3458         struct i2c_client *cp;
3459
3460         io_write(sd, io_reg, addr << 1);
3461
3462         if (addr == 0) {
3463                 v4l2_err(sd, "no %s i2c addr configured\n", desc);
3464                 return NULL;
3465         }
3466
3467         cp = i2c_new_dummy_device(client->adapter, io_read(sd, io_reg) >> 1);
3468         if (IS_ERR(cp)) {
3469                 v4l2_err(sd, "register %s on i2c addr 0x%x failed with %ld\n",
3470                          desc, addr, PTR_ERR(cp));
3471                 cp = NULL;
3472         }
3473
3474         return cp;
3475 }
3476
3477 static int adv7842_register_clients(struct v4l2_subdev *sd)
3478 {
3479         struct adv7842_state *state = to_state(sd);
3480         struct adv7842_platform_data *pdata = &state->pdata;
3481
3482         state->i2c_avlink = adv7842_dummy_client(sd, "avlink", pdata->i2c_avlink, 0xf3);
3483         state->i2c_cec = adv7842_dummy_client(sd, "cec", pdata->i2c_cec, 0xf4);
3484         state->i2c_infoframe = adv7842_dummy_client(sd, "infoframe", pdata->i2c_infoframe, 0xf5);
3485         state->i2c_sdp_io = adv7842_dummy_client(sd, "sdp_io", pdata->i2c_sdp_io, 0xf2);
3486         state->i2c_sdp = adv7842_dummy_client(sd, "sdp", pdata->i2c_sdp, 0xf1);
3487         state->i2c_afe = adv7842_dummy_client(sd, "afe", pdata->i2c_afe, 0xf8);
3488         state->i2c_repeater = adv7842_dummy_client(sd, "repeater", pdata->i2c_repeater, 0xf9);
3489         state->i2c_edid = adv7842_dummy_client(sd, "edid", pdata->i2c_edid, 0xfa);
3490         state->i2c_hdmi = adv7842_dummy_client(sd, "hdmi", pdata->i2c_hdmi, 0xfb);
3491         state->i2c_cp = adv7842_dummy_client(sd, "cp", pdata->i2c_cp, 0xfd);
3492         state->i2c_vdp = adv7842_dummy_client(sd, "vdp", pdata->i2c_vdp, 0xfe);
3493
3494         if (!state->i2c_avlink ||
3495             !state->i2c_cec ||
3496             !state->i2c_infoframe ||
3497             !state->i2c_sdp_io ||
3498             !state->i2c_sdp ||
3499             !state->i2c_afe ||
3500             !state->i2c_repeater ||
3501             !state->i2c_edid ||
3502             !state->i2c_hdmi ||
3503             !state->i2c_cp ||
3504             !state->i2c_vdp)
3505                 return -1;
3506
3507         return 0;
3508 }
3509
3510 static int adv7842_probe(struct i2c_client *client)
3511 {
3512         struct adv7842_state *state;
3513         static const struct v4l2_dv_timings cea640x480 =
3514                 V4L2_DV_BT_CEA_640X480P59_94;
3515         struct adv7842_platform_data *pdata = client->dev.platform_data;
3516         struct v4l2_ctrl_handler *hdl;
3517         struct v4l2_ctrl *ctrl;
3518         struct v4l2_subdev *sd;
3519         unsigned int i;
3520         u16 rev;
3521         int err;
3522
3523         /* Check if the adapter supports the needed features */
3524         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
3525                 return -EIO;
3526
3527         v4l_dbg(1, debug, client, "detecting adv7842 client on address 0x%x\n",
3528                 client->addr << 1);
3529
3530         if (!pdata) {
3531                 v4l_err(client, "No platform data!\n");
3532                 return -ENODEV;
3533         }
3534
3535         state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
3536         if (!state)
3537                 return -ENOMEM;
3538
3539         /* platform data */
3540         state->pdata = *pdata;
3541         state->timings = cea640x480;
3542         state->format = adv7842_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8);
3543
3544         sd = &state->sd;
3545         v4l2_i2c_subdev_init(sd, client, &adv7842_ops);
3546         sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
3547         sd->internal_ops = &adv7842_int_ops;
3548         state->mode = pdata->mode;
3549
3550         state->hdmi_port_a = pdata->input == ADV7842_SELECT_HDMI_PORT_A;
3551         state->restart_stdi_once = true;
3552
3553         /* i2c access to adv7842? */
3554         rev = adv_smbus_read_byte_data_check(client, 0xea, false) << 8 |
3555                 adv_smbus_read_byte_data_check(client, 0xeb, false);
3556         if (rev != 0x2012) {
3557                 v4l2_info(sd, "got rev=0x%04x on first read attempt\n", rev);
3558                 rev = adv_smbus_read_byte_data_check(client, 0xea, false) << 8 |
3559                         adv_smbus_read_byte_data_check(client, 0xeb, false);
3560         }
3561         if (rev != 0x2012) {
3562                 v4l2_info(sd, "not an adv7842 on address 0x%x (rev=0x%04x)\n",
3563                           client->addr << 1, rev);
3564                 return -ENODEV;
3565         }
3566
3567         if (pdata->chip_reset)
3568                 main_reset(sd);
3569
3570         /* control handlers */
3571         hdl = &state->hdl;
3572         v4l2_ctrl_handler_init(hdl, 6);
3573
3574         /* add in ascending ID order */
3575         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3576                           V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
3577         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3578                           V4L2_CID_CONTRAST, 0, 255, 1, 128);
3579         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3580                           V4L2_CID_SATURATION, 0, 255, 1, 128);
3581         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3582                           V4L2_CID_HUE, 0, 128, 1, 0);
3583         ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7842_ctrl_ops,
3584                         V4L2_CID_DV_RX_IT_CONTENT_TYPE, V4L2_DV_IT_CONTENT_TYPE_NO_ITC,
3585                         0, V4L2_DV_IT_CONTENT_TYPE_NO_ITC);
3586         if (ctrl)
3587                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
3588
3589         /* custom controls */
3590         state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL,
3591                         V4L2_CID_DV_RX_POWER_PRESENT, 0, 3, 0, 0);
3592         state->analog_sampling_phase_ctrl = v4l2_ctrl_new_custom(hdl,
3593                         &adv7842_ctrl_analog_sampling_phase, NULL);
3594         state->free_run_color_ctrl_manual = v4l2_ctrl_new_custom(hdl,
3595                         &adv7842_ctrl_free_run_color_manual, NULL);
3596         state->free_run_color_ctrl = v4l2_ctrl_new_custom(hdl,
3597                         &adv7842_ctrl_free_run_color, NULL);
3598         state->rgb_quantization_range_ctrl =
3599                 v4l2_ctrl_new_std_menu(hdl, &adv7842_ctrl_ops,
3600                         V4L2_CID_DV_RX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL,
3601                         0, V4L2_DV_RGB_RANGE_AUTO);
3602         sd->ctrl_handler = hdl;
3603         if (hdl->error) {
3604                 err = hdl->error;
3605                 goto err_hdl;
3606         }
3607         if (adv7842_s_detect_tx_5v_ctrl(sd)) {
3608                 err = -ENODEV;
3609                 goto err_hdl;
3610         }
3611
3612         if (adv7842_register_clients(sd) < 0) {
3613                 err = -ENOMEM;
3614                 v4l2_err(sd, "failed to create all i2c clients\n");
3615                 goto err_i2c;
3616         }
3617
3618
3619         INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
3620                         adv7842_delayed_work_enable_hotplug);
3621
3622         sd->entity.function = MEDIA_ENT_F_DV_DECODER;
3623         for (i = 0; i < ADV7842_PAD_SOURCE; ++i)
3624                 state->pads[i].flags = MEDIA_PAD_FL_SINK;
3625         state->pads[ADV7842_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
3626         err = media_entity_pads_init(&sd->entity, ADV7842_PAD_SOURCE + 1,
3627                                      state->pads);
3628         if (err)
3629                 goto err_work_queues;
3630
3631         err = adv7842_core_init(sd);
3632         if (err)
3633                 goto err_entity;
3634
3635 #if IS_ENABLED(CONFIG_VIDEO_ADV7842_CEC)
3636         state->cec_adap = cec_allocate_adapter(&adv7842_cec_adap_ops,
3637                 state, dev_name(&client->dev),
3638                 CEC_CAP_DEFAULTS, ADV7842_MAX_ADDRS);
3639         err = PTR_ERR_OR_ZERO(state->cec_adap);
3640         if (err)
3641                 goto err_entity;
3642 #endif
3643
3644         v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
3645                   client->addr << 1, client->adapter->name);
3646         return 0;
3647
3648 err_entity:
3649         media_entity_cleanup(&sd->entity);
3650 err_work_queues:
3651         cancel_delayed_work(&state->delayed_work_enable_hotplug);
3652 err_i2c:
3653         adv7842_unregister_clients(sd);
3654 err_hdl:
3655         v4l2_ctrl_handler_free(hdl);
3656         return err;
3657 }
3658
3659 /* ----------------------------------------------------------------------- */
3660
3661 static void adv7842_remove(struct i2c_client *client)
3662 {
3663         struct v4l2_subdev *sd = i2c_get_clientdata(client);
3664         struct adv7842_state *state = to_state(sd);
3665
3666         adv7842_irq_enable(sd, false);
3667         cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
3668         v4l2_device_unregister_subdev(sd);
3669         media_entity_cleanup(&sd->entity);
3670         adv7842_unregister_clients(sd);
3671         v4l2_ctrl_handler_free(sd->ctrl_handler);
3672 }
3673
3674 /* ----------------------------------------------------------------------- */
3675
3676 static const struct i2c_device_id adv7842_id[] = {
3677         { "adv7842" },
3678         { }
3679 };
3680 MODULE_DEVICE_TABLE(i2c, adv7842_id);
3681
3682 /* ----------------------------------------------------------------------- */
3683
3684 static struct i2c_driver adv7842_driver = {
3685         .driver = {
3686                 .name = "adv7842",
3687         },
3688         .probe = adv7842_probe,
3689         .remove = adv7842_remove,
3690         .id_table = adv7842_id,
3691 };
3692
3693 module_i2c_driver(adv7842_driver);
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