1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright(c) 2020, Analogix Semiconductor. All rights reserved.
7 #include <linux/gpio/consumer.h>
9 #include <linux/interrupt.h>
10 #include <linux/iopoll.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/mutex.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/regulator/consumer.h>
16 #include <linux/slab.h>
17 #include <linux/types.h>
18 #include <linux/workqueue.h>
20 #include <linux/of_graph.h>
21 #include <linux/of_platform.h>
23 #include <drm/display/drm_dp_aux_bus.h>
24 #include <drm/display/drm_dp_helper.h>
25 #include <drm/display/drm_hdcp_helper.h>
26 #include <drm/drm_atomic_helper.h>
27 #include <drm/drm_bridge.h>
28 #include <drm/drm_edid.h>
29 #include <drm/drm_mipi_dsi.h>
30 #include <drm/drm_of.h>
31 #include <drm/drm_panel.h>
32 #include <drm/drm_print.h>
33 #include <drm/drm_probe_helper.h>
35 #include <media/v4l2-fwnode.h>
36 #include <sound/hdmi-codec.h>
37 #include <video/display_timing.h>
42 * There is a sync issue while access I2C register between AP(CPU) and
43 * internal firmware(OCM), to avoid the race condition, AP should access
44 * the reserved slave address before slave address occurs changes.
46 static int i2c_access_workaround(struct anx7625_data *ctx,
47 struct i2c_client *client)
50 struct device *dev = &client->dev;
53 if (client == ctx->last_client)
56 ctx->last_client = client;
58 if (client == ctx->i2c.tcpc_client)
59 offset = RSVD_00_ADDR;
60 else if (client == ctx->i2c.tx_p0_client)
61 offset = RSVD_D1_ADDR;
62 else if (client == ctx->i2c.tx_p1_client)
63 offset = RSVD_60_ADDR;
64 else if (client == ctx->i2c.rx_p0_client)
65 offset = RSVD_39_ADDR;
66 else if (client == ctx->i2c.rx_p1_client)
67 offset = RSVD_7F_ADDR;
69 offset = RSVD_00_ADDR;
71 ret = i2c_smbus_write_byte_data(client, offset, 0x00);
74 "fail to access i2c id=%x\n:%x",
75 client->addr, offset);
80 static int anx7625_reg_read(struct anx7625_data *ctx,
81 struct i2c_client *client, u8 reg_addr)
84 struct device *dev = &client->dev;
86 i2c_access_workaround(ctx, client);
88 ret = i2c_smbus_read_byte_data(client, reg_addr);
90 DRM_DEV_ERROR(dev, "read i2c fail id=%x:%x\n",
91 client->addr, reg_addr);
96 static int anx7625_reg_block_read(struct anx7625_data *ctx,
97 struct i2c_client *client,
98 u8 reg_addr, u8 len, u8 *buf)
101 struct device *dev = &client->dev;
103 i2c_access_workaround(ctx, client);
105 ret = i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf);
107 DRM_DEV_ERROR(dev, "read i2c block fail id=%x:%x\n",
108 client->addr, reg_addr);
113 static int anx7625_reg_write(struct anx7625_data *ctx,
114 struct i2c_client *client,
115 u8 reg_addr, u8 reg_val)
118 struct device *dev = &client->dev;
120 i2c_access_workaround(ctx, client);
122 ret = i2c_smbus_write_byte_data(client, reg_addr, reg_val);
125 DRM_DEV_ERROR(dev, "fail to write i2c id=%x\n:%x",
126 client->addr, reg_addr);
131 static int anx7625_reg_block_write(struct anx7625_data *ctx,
132 struct i2c_client *client,
133 u8 reg_addr, u8 len, u8 *buf)
136 struct device *dev = &client->dev;
138 i2c_access_workaround(ctx, client);
140 ret = i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf);
142 dev_err(dev, "write i2c block failed id=%x\n:%x",
143 client->addr, reg_addr);
148 static int anx7625_write_or(struct anx7625_data *ctx,
149 struct i2c_client *client,
154 val = anx7625_reg_read(ctx, client, offset);
158 return anx7625_reg_write(ctx, client, offset, (val | (mask)));
161 static int anx7625_write_and(struct anx7625_data *ctx,
162 struct i2c_client *client,
167 val = anx7625_reg_read(ctx, client, offset);
171 return anx7625_reg_write(ctx, client, offset, (val & (mask)));
174 static int anx7625_write_and_or(struct anx7625_data *ctx,
175 struct i2c_client *client,
176 u8 offset, u8 and_mask, u8 or_mask)
180 val = anx7625_reg_read(ctx, client, offset);
184 return anx7625_reg_write(ctx, client,
185 offset, (val & and_mask) | (or_mask));
188 static int anx7625_config_bit_matrix(struct anx7625_data *ctx)
192 ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client,
193 AUDIO_CONTROL_REGISTER, 0x80);
194 for (i = 0; i < 13; i++)
195 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
196 VIDEO_BIT_MATRIX_12 + i,
202 static int anx7625_read_ctrl_status_p0(struct anx7625_data *ctx)
204 return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS);
207 static int wait_aux_op_finish(struct anx7625_data *ctx)
209 struct device *dev = ctx->dev;
213 ret = readx_poll_timeout(anx7625_read_ctrl_status_p0,
215 (!(val & AP_AUX_CTRL_OP_EN) || (val < 0)),
219 DRM_DEV_ERROR(dev, "aux operation fail!\n");
223 val = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client,
225 if (val < 0 || (val & 0x0F)) {
226 DRM_DEV_ERROR(dev, "aux status %02x\n", val);
233 static int anx7625_aux_trans(struct anx7625_data *ctx, u8 op, u32 address,
236 struct device *dev = ctx->dev;
238 u8 addrh, addrm, addrl;
240 bool is_write = !(op & DP_AUX_I2C_READ);
242 if (len > DP_AUX_MAX_PAYLOAD_BYTES) {
243 dev_err(dev, "exceed aux buffer len.\n");
250 addrl = address & 0xFF;
251 addrm = (address >> 8) & 0xFF;
252 addrh = (address >> 16) & 0xFF;
255 op &= ~DP_AUX_I2C_MOT;
256 cmd = DPCD_CMD(len, op);
258 /* Set command and length */
259 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
260 AP_AUX_COMMAND, cmd);
262 /* Set aux access address */
263 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
264 AP_AUX_ADDR_7_0, addrl);
265 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
266 AP_AUX_ADDR_15_8, addrm);
267 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
268 AP_AUX_ADDR_19_16, addrh);
271 ret |= anx7625_reg_block_write(ctx, ctx->i2c.rx_p0_client,
272 AP_AUX_BUFF_START, len, buf);
273 /* Enable aux access */
274 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
275 AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN);
278 dev_err(dev, "cannot access aux related register.\n");
282 ret = wait_aux_op_finish(ctx);
284 dev_err(dev, "aux IO error: wait aux op finish.\n");
292 /* Read done, read out dpcd data */
293 ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
294 AP_AUX_BUFF_START, len, buf);
296 dev_err(dev, "read dpcd register failed\n");
303 static int anx7625_video_mute_control(struct anx7625_data *ctx,
309 /* Set mute on flag */
310 ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
311 AP_AV_STATUS, AP_MIPI_MUTE);
312 /* Clear mipi RX en */
313 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
314 AP_AV_STATUS, (u8)~AP_MIPI_RX_EN);
317 ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
318 AP_AV_STATUS, (u8)~AP_MIPI_MUTE);
320 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
321 AP_AV_STATUS, AP_MIPI_RX_EN);
327 /* Reduction of fraction a/b */
328 static void anx7625_reduction_of_a_fraction(unsigned long *a, unsigned long *b)
330 unsigned long gcd_num;
331 unsigned long tmp_a, tmp_b;
334 gcd_num = gcd(*a, *b);
341 while ((*a > MAX_UNSIGNED_24BIT) || (*b > MAX_UNSIGNED_24BIT)) {
348 * In the end, make a, b larger to have higher ODFC PLL
349 * output frequency accuracy
351 while ((*a < MAX_UNSIGNED_24BIT) && (*b < MAX_UNSIGNED_24BIT)) {
360 static int anx7625_calculate_m_n(u32 pixelclock,
365 if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) {
366 /* Pixel clock frequency is too high */
367 DRM_ERROR("pixelclock too high, act(%d), maximum(%lu)\n",
369 PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN);
373 if (pixelclock < PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX) {
374 /* Pixel clock frequency is too low */
375 DRM_ERROR("pixelclock too low, act(%d), maximum(%lu)\n",
377 PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX);
381 for (*post_divider = 1;
382 pixelclock < (PLL_OUT_FREQ_MIN / (*post_divider));)
385 if (*post_divider > POST_DIVIDER_MAX) {
386 for (*post_divider = 1;
388 (PLL_OUT_FREQ_ABS_MIN / (*post_divider)));)
391 if (*post_divider > POST_DIVIDER_MAX) {
392 DRM_ERROR("cannot find property post_divider(%d)\n",
398 /* Patch to improve the accuracy */
399 if (*post_divider == 7) {
400 /* 27,000,000 is not divisible by 7 */
402 } else if (*post_divider == 11) {
403 /* 27,000,000 is not divisible by 11 */
405 } else if ((*post_divider == 13) || (*post_divider == 14)) {
406 /* 27,000,000 is not divisible by 13 or 14 */
410 if (pixelclock * (*post_divider) > PLL_OUT_FREQ_ABS_MAX) {
411 DRM_ERROR("act clock(%u) large than maximum(%lu)\n",
412 pixelclock * (*post_divider),
413 PLL_OUT_FREQ_ABS_MAX);
418 *n = XTAL_FRQ / (*post_divider);
420 anx7625_reduction_of_a_fraction(m, n);
425 static int anx7625_odfc_config(struct anx7625_data *ctx,
429 struct device *dev = ctx->dev;
431 /* Config input reference clock frequency 27MHz/19.2MHz */
432 ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16,
433 ~(REF_CLK_27000KHZ << MIPI_FREF_D_IND));
434 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16,
435 (REF_CLK_27000KHZ << MIPI_FREF_D_IND));
437 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client,
438 MIPI_DIGITAL_PLL_8, 0x0f);
439 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8,
442 /* Add patch for MIS2-125 (5pcs ANX7625 fail ATE MBIST test) */
443 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7,
444 ~MIPI_PLL_VCO_TUNE_REG_VAL);
447 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7,
449 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7,
453 DRM_DEV_ERROR(dev, "IO error.\n");
459 * The MIPI source video data exist large variation (e.g. 59Hz ~ 61Hz),
460 * anx7625 defined K ratio for matching MIPI input video clock and
461 * DP output video clock. Increase K value can match bigger video data
462 * variation. IVO panel has small variation than DP CTS spec, need
463 * decrease the K value.
465 static int anx7625_set_k_value(struct anx7625_data *ctx)
467 struct drm_edid_product_id id;
469 drm_edid_get_product_id(ctx->cached_drm_edid, &id);
471 if (be16_to_cpu(id.manufacturer_name) == IVO_MID)
472 return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
473 MIPI_DIGITAL_ADJ_1, 0x3B);
475 return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
476 MIPI_DIGITAL_ADJ_1, 0x3D);
479 static int anx7625_dsi_video_timing_config(struct anx7625_data *ctx)
481 struct device *dev = ctx->dev;
487 ret = anx7625_calculate_m_n(ctx->dt.pixelclock.min * 1000,
488 &m, &n, &post_divider);
491 DRM_DEV_ERROR(dev, "cannot get property m n value.\n");
495 DRM_DEV_DEBUG_DRIVER(dev, "compute M(%lu), N(%lu), divider(%d).\n",
498 /* Configure pixel clock */
499 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L,
500 (ctx->dt.pixelclock.min / 1000) & 0xFF);
501 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H,
502 (ctx->dt.pixelclock.min / 1000) >> 8);
504 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client,
505 MIPI_LANE_CTRL_0, 0xfc);
506 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client,
507 MIPI_LANE_CTRL_0, ctx->pdata.mipi_lanes - 1);
510 htotal = ctx->dt.hactive.min + ctx->dt.hfront_porch.min +
511 ctx->dt.hback_porch.min + ctx->dt.hsync_len.min;
512 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
513 HORIZONTAL_TOTAL_PIXELS_L, htotal & 0xFF);
514 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
515 HORIZONTAL_TOTAL_PIXELS_H, htotal >> 8);
517 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
518 HORIZONTAL_ACTIVE_PIXELS_L, ctx->dt.hactive.min & 0xFF);
519 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
520 HORIZONTAL_ACTIVE_PIXELS_H, ctx->dt.hactive.min >> 8);
522 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
523 HORIZONTAL_FRONT_PORCH_L, ctx->dt.hfront_porch.min);
524 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
525 HORIZONTAL_FRONT_PORCH_H,
526 ctx->dt.hfront_porch.min >> 8);
528 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
529 HORIZONTAL_SYNC_WIDTH_L, ctx->dt.hsync_len.min);
530 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
531 HORIZONTAL_SYNC_WIDTH_H, ctx->dt.hsync_len.min >> 8);
533 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
534 HORIZONTAL_BACK_PORCH_L, ctx->dt.hback_porch.min);
535 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
536 HORIZONTAL_BACK_PORCH_H, ctx->dt.hback_porch.min >> 8);
538 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_L,
539 ctx->dt.vactive.min);
540 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_H,
541 ctx->dt.vactive.min >> 8);
543 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
544 VERTICAL_FRONT_PORCH, ctx->dt.vfront_porch.min);
546 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
547 VERTICAL_SYNC_WIDTH, ctx->dt.vsync_len.min);
549 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client,
550 VERTICAL_BACK_PORCH, ctx->dt.vback_porch.min);
552 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
553 MIPI_PLL_M_NUM_23_16, (m >> 16) & 0xff);
554 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
555 MIPI_PLL_M_NUM_15_8, (m >> 8) & 0xff);
556 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
557 MIPI_PLL_M_NUM_7_0, (m & 0xff));
559 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
560 MIPI_PLL_N_NUM_23_16, (n >> 16) & 0xff);
561 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
562 MIPI_PLL_N_NUM_15_8, (n >> 8) & 0xff);
563 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_7_0,
566 anx7625_set_k_value(ctx);
568 ret |= anx7625_odfc_config(ctx, post_divider - 1);
571 DRM_DEV_ERROR(dev, "mipi dsi setup IO error.\n");
576 static int anx7625_swap_dsi_lane3(struct anx7625_data *ctx)
579 struct device *dev = ctx->dev;
581 /* Swap MIPI-DSI data lane 3 P and N */
582 val = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP);
584 DRM_DEV_ERROR(dev, "IO error : access MIPI_SWAP.\n");
588 val |= (1 << MIPI_SWAP_CH3);
589 return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP, val);
592 static int anx7625_api_dsi_config(struct anx7625_data *ctx)
596 struct device *dev = ctx->dev;
598 /* Swap MIPI-DSI data lane 3 P and N */
599 ret = anx7625_swap_dsi_lane3(ctx);
601 DRM_DEV_ERROR(dev, "IO error : swap dsi lane 3 fail.\n");
605 /* DSI clock settings */
606 val = (0 << MIPI_HS_PWD_CLK) |
607 (0 << MIPI_HS_RT_CLK) |
609 (1 << MIPI_CLK_RT_MANUAL_PD_EN) |
610 (1 << MIPI_CLK_HS_MANUAL_PD_EN) |
611 (0 << MIPI_CLK_DET_DET_BYPASS) |
612 (0 << MIPI_CLK_MISS_CTRL) |
613 (0 << MIPI_PD_LPTX_CH_MANUAL_PD_EN);
614 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
615 MIPI_PHY_CONTROL_3, val);
618 * Decreased HS prepare timing delay from 160ns to 80ns work with
619 * a) Dragon board 810 series (Qualcomm AP)
620 * b) Moving Pixel DSI source (PG3A pattern generator +
621 * P332 D-PHY Probe) default D-PHY timing
624 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
625 MIPI_TIME_HS_PRPR, 0x10);
628 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18,
629 SELECT_DSI << MIPI_DPI_SELECT);
631 ret |= anx7625_dsi_video_timing_config(ctx);
633 DRM_DEV_ERROR(dev, "dsi video timing config fail\n");
637 /* Toggle m, n ready */
638 ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6,
639 ~(MIPI_M_NUM_READY | MIPI_N_NUM_READY));
640 usleep_range(1000, 1100);
641 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6,
642 MIPI_M_NUM_READY | MIPI_N_NUM_READY);
644 /* Configure integer stable register */
645 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
646 MIPI_VIDEO_STABLE_CNT, 0x02);
647 /* Power on MIPI RX */
648 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
649 MIPI_LANE_CTRL_10, 0x00);
650 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
651 MIPI_LANE_CTRL_10, 0x80);
654 DRM_DEV_ERROR(dev, "IO error : mipi dsi enable init fail.\n");
659 static int anx7625_dsi_config(struct anx7625_data *ctx)
661 struct device *dev = ctx->dev;
664 DRM_DEV_DEBUG_DRIVER(dev, "config dsi.\n");
667 ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
668 R_DSC_CTRL_0, ~DSC_EN);
670 ret |= anx7625_api_dsi_config(ctx);
673 DRM_DEV_ERROR(dev, "IO error : api dsi config error.\n");
678 ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
679 AP_AV_STATUS, AP_MIPI_RX_EN);
680 /* Clear mute flag */
681 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
682 AP_AV_STATUS, (u8)~AP_MIPI_MUTE);
684 DRM_DEV_ERROR(dev, "IO error : enable mipi rx fail.\n");
686 DRM_DEV_DEBUG_DRIVER(dev, "success to config DSI\n");
691 static int anx7625_api_dpi_config(struct anx7625_data *ctx)
693 struct device *dev = ctx->dev;
694 u16 freq = ctx->dt.pixelclock.min / 1000;
697 /* configure pixel clock */
698 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
699 PIXEL_CLOCK_L, freq & 0xFF);
700 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
701 PIXEL_CLOCK_H, (freq >> 8));
704 /* set to DPI PLL module sel */
705 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
706 MIPI_DIGITAL_PLL_9, 0x20);
707 /* power down MIPI */
708 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
709 MIPI_LANE_CTRL_10, 0x08);
710 /* enable DPI mode */
711 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
712 MIPI_DIGITAL_PLL_18, 0x1C);
714 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
715 VIDEO_CONTROL_0, 0x06);
717 DRM_DEV_ERROR(dev, "IO error : dpi phy set failed.\n");
722 static int anx7625_dpi_config(struct anx7625_data *ctx)
724 struct device *dev = ctx->dev;
727 DRM_DEV_DEBUG_DRIVER(dev, "config dpi\n");
730 ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
731 R_DSC_CTRL_0, ~DSC_EN);
733 DRM_DEV_ERROR(dev, "IO error : disable dsc failed.\n");
737 ret = anx7625_config_bit_matrix(ctx);
739 DRM_DEV_ERROR(dev, "config bit matrix failed.\n");
743 ret = anx7625_api_dpi_config(ctx);
745 DRM_DEV_ERROR(dev, "mipi phy(dpi) setup failed.\n");
750 ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
751 AP_AV_STATUS, AP_MIPI_RX_EN);
752 /* clear mute flag */
753 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
754 AP_AV_STATUS, (u8)~AP_MIPI_MUTE);
756 DRM_DEV_ERROR(dev, "IO error : enable mipi rx failed.\n");
761 static int anx7625_read_flash_status(struct anx7625_data *ctx)
763 return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, R_RAM_CTRL);
766 static int anx7625_hdcp_key_probe(struct anx7625_data *ctx)
769 struct device *dev = ctx->dev;
770 u8 ident[FLASH_BUF_LEN];
772 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
773 FLASH_ADDR_HIGH, 0x91);
774 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
775 FLASH_ADDR_LOW, 0xA0);
777 dev_err(dev, "IO error : set key flash address.\n");
781 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
782 FLASH_LEN_HIGH, (FLASH_BUF_LEN - 1) >> 8);
783 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
784 FLASH_LEN_LOW, (FLASH_BUF_LEN - 1) & 0xFF);
786 dev_err(dev, "IO error : set key flash len.\n");
790 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
791 R_FLASH_RW_CTRL, FLASH_READ);
792 ret |= readx_poll_timeout(anx7625_read_flash_status,
794 ((val & FLASH_DONE) || (val < 0)),
798 dev_err(dev, "flash read access fail!\n");
802 ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
804 FLASH_BUF_LEN, ident);
806 dev_err(dev, "read flash data fail!\n");
810 if (ident[29] == 0xFF && ident[30] == 0xFF && ident[31] == 0xFF)
816 static int anx7625_hdcp_key_load(struct anx7625_data *ctx)
819 struct device *dev = ctx->dev;
821 /* Select HDCP 1.4 KEY */
822 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
824 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
825 FLASH_ADDR_HIGH, HDCP14KEY_START_ADDR >> 8);
826 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
827 FLASH_ADDR_LOW, HDCP14KEY_START_ADDR & 0xFF);
828 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
829 R_RAM_LEN_H, HDCP14KEY_SIZE >> 12);
830 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
831 R_RAM_LEN_L, HDCP14KEY_SIZE >> 4);
833 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
835 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
837 /* Enable HDCP 1.4 KEY load */
838 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
839 R_RAM_CTRL, DECRYPT_EN | LOAD_START);
840 dev_dbg(dev, "load HDCP 1.4 key done\n");
844 static int anx7625_hdcp_disable(struct anx7625_data *ctx)
847 struct device *dev = ctx->dev;
849 dev_dbg(dev, "disable HDCP 1.4\n");
852 ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);
854 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10);
855 /* Interrupt for DRM */
856 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01);
858 dev_err(dev, "fail to disable HDCP\n");
860 return anx7625_write_and(ctx, ctx->i2c.tx_p0_client,
861 TX_HDCP_CTRL0, ~HARD_AUTH_EN & 0xFF);
864 static int anx7625_hdcp_enable(struct anx7625_data *ctx)
868 struct device *dev = ctx->dev;
870 ret = anx7625_hdcp_key_probe(ctx);
872 dev_dbg(dev, "no key found, not to do hdcp\n");
876 /* Read downstream capability */
877 ret = anx7625_aux_trans(ctx, DP_AUX_NATIVE_READ, DP_AUX_HDCP_BCAPS, 1, &bcap);
881 if (!(bcap & DP_BCAPS_HDCP_CAPABLE)) {
882 pr_warn("downstream not support HDCP 1.4, cap(%x).\n", bcap);
886 dev_dbg(dev, "enable HDCP 1.4\n");
888 /* First clear HDCP state */
889 ret = anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
891 KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN);
892 usleep_range(1000, 1100);
893 /* Second clear HDCP state */
894 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
896 KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN);
898 /* Set time for waiting KSVR */
899 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
900 SP_TX_WAIT_KSVR_TIME, 0xc8);
901 /* Set time for waiting R0 */
902 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
903 SP_TX_WAIT_R0_TIME, 0xb0);
904 ret |= anx7625_hdcp_key_load(ctx);
906 pr_warn("prepare HDCP key failed.\n");
910 ret = anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xee, 0x20);
913 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10);
914 /* Interrupt for DRM */
915 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01);
917 dev_err(dev, "fail to enable HDCP\n");
919 return anx7625_write_or(ctx, ctx->i2c.tx_p0_client,
920 TX_HDCP_CTRL0, HARD_AUTH_EN);
923 static void anx7625_dp_start(struct anx7625_data *ctx)
926 struct device *dev = ctx->dev;
929 if (!ctx->display_timing_valid) {
930 DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n");
934 dev_dbg(dev, "set downstream sink into normal\n");
935 /* Downstream sink enter into normal mode */
936 data = DP_SET_POWER_D0;
937 ret = anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, DP_SET_POWER, 1, &data);
939 dev_err(dev, "IO error : set sink into normal mode fail\n");
942 anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);
944 if (ctx->pdata.is_dpi)
945 ret = anx7625_dpi_config(ctx);
947 ret = anx7625_dsi_config(ctx);
950 DRM_DEV_ERROR(dev, "MIPI phy setup error.\n");
952 ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
957 static void anx7625_dp_stop(struct anx7625_data *ctx)
959 struct device *dev = ctx->dev;
963 DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n");
966 * Video disable: 0x72:08 bit 7 = 0;
967 * Audio disable: 0x70:87 bit 0 = 0;
969 ret = anx7625_write_and(ctx, ctx->i2c.tx_p0_client, 0x87, 0xfe);
970 ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f);
972 ret |= anx7625_video_mute_control(ctx, 1);
974 dev_dbg(dev, "notify downstream enter into standby\n");
975 /* Downstream monitor enter into standby mode */
976 data = DP_SET_POWER_D3;
977 ret |= anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, DP_SET_POWER, 1, &data);
979 DRM_DEV_ERROR(dev, "IO error : mute video fail\n");
981 ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
986 static int sp_tx_rst_aux(struct anx7625_data *ctx)
990 ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, RST_CTRL2,
992 ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, RST_CTRL2,
997 static int sp_tx_aux_wr(struct anx7625_data *ctx, u8 offset)
1001 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1002 AP_AUX_BUFF_START, offset);
1003 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1004 AP_AUX_COMMAND, 0x04);
1005 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
1006 AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN);
1007 return (ret | wait_aux_op_finish(ctx));
1010 static int sp_tx_aux_rd(struct anx7625_data *ctx, u8 len_cmd)
1014 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1015 AP_AUX_COMMAND, len_cmd);
1016 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
1017 AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN);
1018 return (ret | wait_aux_op_finish(ctx));
1021 static int sp_tx_get_edid_block(struct anx7625_data *ctx)
1024 struct device *dev = ctx->dev;
1026 sp_tx_aux_wr(ctx, 0x7e);
1027 sp_tx_aux_rd(ctx, 0x01);
1028 c = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START);
1030 DRM_DEV_ERROR(dev, "IO error : access AUX BUFF.\n");
1034 DRM_DEV_DEBUG_DRIVER(dev, " EDID Block = %d\n", c + 1);
1036 if (c > MAX_EDID_BLOCK)
1042 static int edid_read(struct anx7625_data *ctx,
1043 u8 offset, u8 *pblock_buf)
1046 struct device *dev = ctx->dev;
1048 for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) {
1049 sp_tx_aux_wr(ctx, offset);
1050 /* Set I2C read com 0x01 mot = 0 and read 16 bytes */
1051 ret = sp_tx_aux_rd(ctx, 0xf1);
1054 ret = sp_tx_rst_aux(ctx);
1055 DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n");
1057 ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
1059 MAX_DPCD_BUFFER_SIZE,
1066 if (cnt > EDID_TRY_CNT)
1072 static int segments_edid_read(struct anx7625_data *ctx,
1073 u8 segment, u8 *buf, u8 offset)
1077 struct device *dev = ctx->dev;
1079 /* Write address only */
1080 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1081 AP_AUX_ADDR_7_0, 0x30);
1082 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1083 AP_AUX_COMMAND, 0x04);
1084 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1086 AP_AUX_CTRL_ADDRONLY | AP_AUX_CTRL_OP_EN);
1088 ret |= wait_aux_op_finish(ctx);
1089 /* Write segment address */
1090 ret |= sp_tx_aux_wr(ctx, segment);
1092 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1093 AP_AUX_ADDR_7_0, 0x50);
1095 DRM_DEV_ERROR(dev, "IO error : aux initial fail.\n");
1099 for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) {
1100 sp_tx_aux_wr(ctx, offset);
1101 /* Set I2C read com 0x01 mot = 0 and read 16 bytes */
1102 ret = sp_tx_aux_rd(ctx, 0xf1);
1105 ret = sp_tx_rst_aux(ctx);
1106 DRM_DEV_ERROR(dev, "segment read fail, reset!\n");
1108 ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
1110 MAX_DPCD_BUFFER_SIZE, buf);
1116 if (cnt > EDID_TRY_CNT)
1122 static int sp_tx_edid_read(struct anx7625_data *ctx,
1123 u8 *pedid_blocks_buf)
1127 int count, blocks_num;
1128 u8 pblock_buf[MAX_DPCD_BUFFER_SIZE];
1130 int g_edid_break = 0;
1132 struct device *dev = ctx->dev;
1134 /* Address initial */
1135 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1136 AP_AUX_ADDR_7_0, 0x50);
1137 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1138 AP_AUX_ADDR_15_8, 0);
1139 ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
1140 AP_AUX_ADDR_19_16, 0xf0);
1142 DRM_DEV_ERROR(dev, "access aux channel IO error.\n");
1146 blocks_num = sp_tx_get_edid_block(ctx);
1156 for (i = 0; i < 8; i++) {
1157 offset = (i + count * 8) * MAX_DPCD_BUFFER_SIZE;
1158 g_edid_break = edid_read(ctx, offset,
1161 if (g_edid_break < 0)
1164 memcpy(&pedid_blocks_buf[offset],
1166 MAX_DPCD_BUFFER_SIZE);
1173 for (j = 0; j < 8; j++) {
1174 edid_pos = (j + count * 8) *
1175 MAX_DPCD_BUFFER_SIZE;
1177 if (g_edid_break == 1)
1180 ret = segments_edid_read(ctx, count / 2,
1181 pblock_buf, offset);
1185 memcpy(&pedid_blocks_buf[edid_pos],
1187 MAX_DPCD_BUFFER_SIZE);
1188 offset = offset + 0x10;
1195 for (j = 0; j < 8; j++) {
1196 edid_pos = (j + count * 8) *
1197 MAX_DPCD_BUFFER_SIZE;
1198 if (g_edid_break == 1)
1201 ret = segments_edid_read(ctx, count / 2,
1202 pblock_buf, offset);
1206 memcpy(&pedid_blocks_buf[edid_pos],
1208 MAX_DPCD_BUFFER_SIZE);
1209 offset = offset + 0x10;
1219 } while (blocks_num >= count);
1221 /* Check edid data */
1222 if (!drm_edid_is_valid((struct edid *)pedid_blocks_buf)) {
1223 DRM_DEV_ERROR(dev, "WARNING! edid check fail!\n");
1227 /* Reset aux channel */
1228 ret = sp_tx_rst_aux(ctx);
1230 DRM_DEV_ERROR(dev, "Failed to reset aux channel!\n");
1234 return (blocks_num + 1);
1237 static void anx7625_power_on(struct anx7625_data *ctx)
1239 struct device *dev = ctx->dev;
1242 if (!ctx->pdata.low_power_mode) {
1243 DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n");
1247 for (i = 0; i < ARRAY_SIZE(ctx->pdata.supplies); i++) {
1248 ret = regulator_enable(ctx->pdata.supplies[i].consumer);
1250 DRM_DEV_DEBUG_DRIVER(dev, "cannot enable supply %d: %d\n",
1254 usleep_range(2000, 2100);
1257 usleep_range(11000, 12000);
1259 /* Power on pin enable */
1260 gpiod_set_value(ctx->pdata.gpio_p_on, 1);
1261 usleep_range(10000, 11000);
1262 /* Power reset pin enable */
1263 gpiod_set_value(ctx->pdata.gpio_reset, 1);
1264 usleep_range(10000, 11000);
1266 DRM_DEV_DEBUG_DRIVER(dev, "power on !\n");
1269 for (--i; i >= 0; i--)
1270 regulator_disable(ctx->pdata.supplies[i].consumer);
1273 static void anx7625_power_standby(struct anx7625_data *ctx)
1275 struct device *dev = ctx->dev;
1278 if (!ctx->pdata.low_power_mode) {
1279 DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n");
1283 gpiod_set_value(ctx->pdata.gpio_reset, 0);
1284 usleep_range(1000, 1100);
1285 gpiod_set_value(ctx->pdata.gpio_p_on, 0);
1286 usleep_range(1000, 1100);
1288 ret = regulator_bulk_disable(ARRAY_SIZE(ctx->pdata.supplies),
1289 ctx->pdata.supplies);
1291 DRM_DEV_DEBUG_DRIVER(dev, "cannot disable supplies %d\n", ret);
1293 DRM_DEV_DEBUG_DRIVER(dev, "power down\n");
1296 /* Basic configurations of ANX7625 */
1297 static void anx7625_config(struct anx7625_data *ctx)
1299 anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1300 XTAL_FRQ_SEL, XTAL_FRQ_27M);
1303 static int anx7625_hpd_timer_config(struct anx7625_data *ctx)
1307 /* Set irq detect window to 2ms */
1308 ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
1309 HPD_DET_TIMER_BIT0_7, HPD_TIME & 0xFF);
1310 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
1311 HPD_DET_TIMER_BIT8_15,
1312 (HPD_TIME >> 8) & 0xFF);
1313 ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
1314 HPD_DET_TIMER_BIT16_23,
1315 (HPD_TIME >> 16) & 0xFF);
1320 static int anx7625_read_hpd_gpio_config_status(struct anx7625_data *ctx)
1322 return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, GPIO_CTRL_2);
1325 static void anx7625_disable_pd_protocol(struct anx7625_data *ctx)
1327 struct device *dev = ctx->dev;
1330 /* Reset main ocm */
1331 ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40);
1333 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1334 AP_AV_STATUS, AP_DISABLE_PD);
1335 /* Release main ocm */
1336 ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x00);
1339 DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n");
1341 DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n");
1344 * Make sure the HPD GPIO already be configured after OCM release before
1345 * setting HPD detect window register. Here we poll the status register
1346 * at maximum 40ms, then config HPD irq detect window register
1348 readx_poll_timeout(anx7625_read_hpd_gpio_config_status,
1350 ((val & HPD_SOURCE) || (val < 0)),
1353 /* Set HPD irq detect window to 2ms */
1354 anx7625_hpd_timer_config(ctx);
1357 static int anx7625_ocm_loading_check(struct anx7625_data *ctx)
1360 struct device *dev = ctx->dev;
1362 /* Check interface workable */
1363 ret = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client,
1366 DRM_DEV_ERROR(dev, "IO error : access flash load.\n");
1369 if ((ret & FLASH_LOAD_STA_CHK) != FLASH_LOAD_STA_CHK)
1372 anx7625_disable_pd_protocol(ctx);
1374 DRM_DEV_DEBUG_DRIVER(dev, "Firmware ver %02x%02x,",
1375 anx7625_reg_read(ctx,
1376 ctx->i2c.rx_p0_client,
1378 anx7625_reg_read(ctx,
1379 ctx->i2c.rx_p0_client,
1381 DRM_DEV_DEBUG_DRIVER(dev, "Driver version %s\n",
1382 ANX7625_DRV_VERSION);
1387 static void anx7625_power_on_init(struct anx7625_data *ctx)
1391 for (retry_count = 0; retry_count < 3; retry_count++) {
1392 anx7625_power_on(ctx);
1393 anx7625_config(ctx);
1395 for (i = 0; i < OCM_LOADING_TIME; i++) {
1396 if (!anx7625_ocm_loading_check(ctx))
1398 usleep_range(1000, 1100);
1400 anx7625_power_standby(ctx);
1404 static void anx7625_init_gpio(struct anx7625_data *platform)
1406 struct device *dev = platform->dev;
1408 DRM_DEV_DEBUG_DRIVER(dev, "init gpio\n");
1410 /* Gpio for chip power enable */
1411 platform->pdata.gpio_p_on =
1412 devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
1413 if (IS_ERR_OR_NULL(platform->pdata.gpio_p_on)) {
1414 DRM_DEV_DEBUG_DRIVER(dev, "no enable gpio found\n");
1415 platform->pdata.gpio_p_on = NULL;
1418 /* Gpio for chip reset */
1419 platform->pdata.gpio_reset =
1420 devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
1421 if (IS_ERR_OR_NULL(platform->pdata.gpio_reset)) {
1422 DRM_DEV_DEBUG_DRIVER(dev, "no reset gpio found\n");
1423 platform->pdata.gpio_reset = NULL;
1426 if (platform->pdata.gpio_p_on && platform->pdata.gpio_reset) {
1427 platform->pdata.low_power_mode = 1;
1428 DRM_DEV_DEBUG_DRIVER(dev, "low power mode, pon %d, reset %d.\n",
1429 desc_to_gpio(platform->pdata.gpio_p_on),
1430 desc_to_gpio(platform->pdata.gpio_reset));
1432 platform->pdata.low_power_mode = 0;
1433 DRM_DEV_DEBUG_DRIVER(dev, "not low power mode.\n");
1437 static void anx7625_stop_dp_work(struct anx7625_data *ctx)
1439 ctx->hpd_status = 0;
1440 ctx->hpd_high_cnt = 0;
1443 static void anx7625_start_dp_work(struct anx7625_data *ctx)
1446 struct device *dev = ctx->dev;
1448 if (ctx->hpd_high_cnt >= 2) {
1449 DRM_DEV_DEBUG_DRIVER(dev, "filter useless HPD\n");
1453 ctx->hpd_status = 1;
1454 ctx->hpd_high_cnt++;
1456 /* Not support HDCP */
1457 ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);
1460 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10);
1461 /* Interrupt for DRM */
1462 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01);
1464 DRM_DEV_ERROR(dev, "fail to setting HDCP/auth\n");
1468 ret = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, 0x86);
1472 DRM_DEV_DEBUG_DRIVER(dev, "Secure OCM version=%02x\n", ret);
1475 static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx)
1477 return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS);
1480 static int _anx7625_hpd_polling(struct anx7625_data *ctx,
1481 unsigned long wait_us)
1484 struct device *dev = ctx->dev;
1486 /* Interrupt mode, no need poll HPD status, just return */
1487 if (ctx->pdata.intp_irq)
1490 ret = readx_poll_timeout(anx7625_read_hpd_status_p0,
1492 ((val & HPD_STATUS) || (val < 0)),
1496 DRM_DEV_ERROR(dev, "no hpd.\n");
1500 DRM_DEV_DEBUG_DRIVER(dev, "system status: 0x%x. HPD raise up.\n", val);
1501 anx7625_reg_write(ctx, ctx->i2c.tcpc_client,
1502 INTR_ALERT_1, 0xFF);
1503 anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1504 INTERFACE_CHANGE_INT, 0);
1506 anx7625_start_dp_work(ctx);
1508 if (!ctx->pdata.panel_bridge && ctx->bridge_attached)
1509 drm_helper_hpd_irq_event(ctx->bridge.dev);
1514 static int anx7625_wait_hpd_asserted(struct drm_dp_aux *aux,
1515 unsigned long wait_us)
1517 struct anx7625_data *ctx = container_of(aux, struct anx7625_data, aux);
1518 struct device *dev = ctx->dev;
1521 pm_runtime_get_sync(dev);
1522 ret = _anx7625_hpd_polling(ctx, wait_us);
1523 pm_runtime_mark_last_busy(dev);
1524 pm_runtime_put_autosuspend(dev);
1529 static void anx7625_remove_edid(struct anx7625_data *ctx)
1531 drm_edid_free(ctx->cached_drm_edid);
1532 ctx->cached_drm_edid = NULL;
1535 static void anx7625_dp_adjust_swing(struct anx7625_data *ctx)
1539 for (i = 0; i < ctx->pdata.dp_lane0_swing_reg_cnt; i++)
1540 anx7625_reg_write(ctx, ctx->i2c.tx_p1_client,
1541 DP_TX_LANE0_SWING_REG0 + i,
1542 ctx->pdata.lane0_reg_data[i]);
1544 for (i = 0; i < ctx->pdata.dp_lane1_swing_reg_cnt; i++)
1545 anx7625_reg_write(ctx, ctx->i2c.tx_p1_client,
1546 DP_TX_LANE1_SWING_REG0 + i,
1547 ctx->pdata.lane1_reg_data[i]);
1550 static void dp_hpd_change_handler(struct anx7625_data *ctx, bool on)
1552 struct device *dev = ctx->dev;
1555 DRM_DEV_DEBUG_DRIVER(dev, "dp_hpd_change_default_func: %d\n",
1559 DRM_DEV_DEBUG_DRIVER(dev, " HPD low\n");
1560 anx7625_remove_edid(ctx);
1561 anx7625_stop_dp_work(ctx);
1563 DRM_DEV_DEBUG_DRIVER(dev, " HPD high\n");
1564 anx7625_start_dp_work(ctx);
1565 anx7625_dp_adjust_swing(ctx);
1569 static int anx7625_hpd_change_detect(struct anx7625_data *ctx)
1571 int intr_vector, status;
1572 struct device *dev = ctx->dev;
1574 status = anx7625_reg_write(ctx, ctx->i2c.tcpc_client,
1575 INTR_ALERT_1, 0xFF);
1577 DRM_DEV_ERROR(dev, "cannot clear alert reg.\n");
1581 intr_vector = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client,
1582 INTERFACE_CHANGE_INT);
1583 if (intr_vector < 0) {
1584 DRM_DEV_ERROR(dev, "cannot access interrupt change reg.\n");
1587 DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector);
1588 status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
1589 INTERFACE_CHANGE_INT,
1590 intr_vector & (~intr_vector));
1592 DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n");
1596 if (!(intr_vector & HPD_STATUS_CHANGE))
1599 status = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client,
1602 DRM_DEV_ERROR(dev, "cannot clear interrupt status.\n");
1606 DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x45=%x\n", status);
1607 dp_hpd_change_handler(ctx, status & HPD_STATUS);
1612 static void anx7625_work_func(struct work_struct *work)
1615 struct anx7625_data *ctx = container_of(work,
1616 struct anx7625_data, work);
1618 mutex_lock(&ctx->lock);
1620 if (pm_runtime_suspended(ctx->dev)) {
1621 mutex_unlock(&ctx->lock);
1625 event = anx7625_hpd_change_detect(ctx);
1627 mutex_unlock(&ctx->lock);
1632 if (ctx->bridge_attached)
1633 drm_helper_hpd_irq_event(ctx->bridge.dev);
1636 static irqreturn_t anx7625_intr_hpd_isr(int irq, void *data)
1638 struct anx7625_data *ctx = (struct anx7625_data *)data;
1640 queue_work(ctx->workqueue, &ctx->work);
1645 static int anx7625_get_swing_setting(struct device *dev,
1646 struct anx7625_platform_data *pdata)
1650 num_regs = of_property_read_variable_u8_array(dev->of_node, "analogix,lane0-swing",
1651 pdata->lane0_reg_data, 1, DP_TX_SWING_REG_CNT);
1653 pdata->dp_lane0_swing_reg_cnt = num_regs;
1655 num_regs = of_property_read_variable_u8_array(dev->of_node, "analogix,lane1-swing",
1656 pdata->lane1_reg_data, 1, DP_TX_SWING_REG_CNT);
1658 pdata->dp_lane1_swing_reg_cnt = num_regs;
1663 static int anx7625_parse_dt(struct device *dev,
1664 struct anx7625_platform_data *pdata)
1666 struct device_node *np = dev->of_node, *ep0;
1667 int bus_type, mipi_lanes;
1669 anx7625_get_swing_setting(dev, pdata);
1671 pdata->is_dpi = 0; /* default dsi mode */
1672 of_node_put(pdata->mipi_host_node);
1673 pdata->mipi_host_node = of_graph_get_remote_node(np, 0, 0);
1674 if (!pdata->mipi_host_node) {
1675 DRM_DEV_ERROR(dev, "fail to get internal panel.\n");
1680 mipi_lanes = MAX_LANES_SUPPORT;
1681 ep0 = of_graph_get_endpoint_by_regs(np, 0, 0);
1683 if (of_property_read_u32(ep0, "bus-type", &bus_type))
1686 mipi_lanes = drm_of_get_data_lanes_count(ep0, 1, MAX_LANES_SUPPORT);
1690 if (bus_type == V4L2_FWNODE_BUS_TYPE_DPI) /* bus type is DPI */
1693 pdata->mipi_lanes = MAX_LANES_SUPPORT;
1695 pdata->mipi_lanes = mipi_lanes;
1698 DRM_DEV_DEBUG_DRIVER(dev, "found MIPI DPI host node.\n");
1700 DRM_DEV_DEBUG_DRIVER(dev, "found MIPI DSI host node.\n");
1702 if (of_property_read_bool(np, "analogix,audio-enable"))
1703 pdata->audio_en = 1;
1708 static int anx7625_parse_dt_panel(struct device *dev,
1709 struct anx7625_platform_data *pdata)
1711 struct device_node *np = dev->of_node;
1713 pdata->panel_bridge = devm_drm_of_get_bridge(dev, np, 1, 0);
1714 if (IS_ERR(pdata->panel_bridge)) {
1715 if (PTR_ERR(pdata->panel_bridge) == -ENODEV) {
1716 pdata->panel_bridge = NULL;
1720 return PTR_ERR(pdata->panel_bridge);
1723 DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n");
1728 static bool anx7625_of_panel_on_aux_bus(struct device *dev)
1730 struct device_node *bus, *panel;
1732 bus = of_get_child_by_name(dev->of_node, "aux-bus");
1736 panel = of_get_child_by_name(bus, "panel");
1745 static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge)
1747 return container_of(bridge, struct anx7625_data, bridge);
1750 static ssize_t anx7625_aux_transfer(struct drm_dp_aux *aux,
1751 struct drm_dp_aux_msg *msg)
1753 struct anx7625_data *ctx = container_of(aux, struct anx7625_data, aux);
1754 struct device *dev = ctx->dev;
1755 u8 request = msg->request & ~DP_AUX_I2C_MOT;
1758 mutex_lock(&ctx->aux_lock);
1759 pm_runtime_get_sync(dev);
1762 case DP_AUX_NATIVE_WRITE:
1763 case DP_AUX_I2C_WRITE:
1764 case DP_AUX_NATIVE_READ:
1765 case DP_AUX_I2C_READ:
1771 ret = anx7625_aux_trans(ctx, msg->request, msg->address,
1772 msg->size, msg->buffer);
1773 pm_runtime_mark_last_busy(dev);
1774 pm_runtime_put_autosuspend(dev);
1775 mutex_unlock(&ctx->aux_lock);
1780 static const struct drm_edid *anx7625_edid_read(struct anx7625_data *ctx)
1782 struct device *dev = ctx->dev;
1786 if (ctx->cached_drm_edid)
1789 edid_buf = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL);
1793 pm_runtime_get_sync(dev);
1794 _anx7625_hpd_polling(ctx, 5000 * 100);
1795 edid_num = sp_tx_edid_read(ctx, edid_buf);
1796 pm_runtime_put_sync(dev);
1799 DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num);
1804 ctx->cached_drm_edid = drm_edid_alloc(edid_buf, FOUR_BLOCK_SIZE);
1808 return drm_edid_dup(ctx->cached_drm_edid);
1811 static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx)
1813 struct device *dev = ctx->dev;
1815 DRM_DEV_DEBUG_DRIVER(dev, "sink detect\n");
1817 if (ctx->pdata.panel_bridge)
1818 return connector_status_connected;
1820 return ctx->hpd_status ? connector_status_connected :
1821 connector_status_disconnected;
1824 static int anx7625_audio_hw_params(struct device *dev, void *data,
1825 struct hdmi_codec_daifmt *fmt,
1826 struct hdmi_codec_params *params)
1828 struct anx7625_data *ctx = dev_get_drvdata(dev);
1832 if (anx7625_sink_detect(ctx) == connector_status_disconnected) {
1833 DRM_DEV_DEBUG_DRIVER(dev, "DP not connected\n");
1837 if (fmt->fmt != HDMI_DSP_A && fmt->fmt != HDMI_I2S) {
1838 DRM_DEV_ERROR(dev, "only supports DSP_A & I2S\n");
1842 DRM_DEV_DEBUG_DRIVER(dev, "setting %d Hz, %d bit, %d channels\n",
1843 params->sample_rate, params->sample_width,
1844 params->cea.channels);
1846 if (fmt->fmt == HDMI_DSP_A)
1847 ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client,
1848 AUDIO_CHANNEL_STATUS_6,
1852 ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client,
1853 AUDIO_CHANNEL_STATUS_6,
1858 switch (params->sample_width) {
1860 wl = AUDIO_W_LEN_16_20MAX;
1863 wl = AUDIO_W_LEN_18_20MAX;
1866 wl = AUDIO_W_LEN_20_20MAX;
1869 wl = AUDIO_W_LEN_24_24MAX;
1872 DRM_DEV_DEBUG_DRIVER(dev, "wordlength: %d bit not support",
1873 params->sample_width);
1876 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client,
1877 AUDIO_CHANNEL_STATUS_5,
1881 switch (params->cea.channels) {
1895 DRM_DEV_DEBUG_DRIVER(dev, "channel number: %d not support",
1896 params->cea.channels);
1899 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client,
1900 AUDIO_CHANNEL_STATUS_6, 0x1f, ch << 5);
1902 ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client,
1903 AUDIO_CHANNEL_STATUS_6, AUDIO_LAYOUT);
1905 ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client,
1906 AUDIO_CHANNEL_STATUS_6, ~AUDIO_LAYOUT);
1909 switch (params->sample_rate) {
1911 rate = AUDIO_FS_32K;
1914 rate = AUDIO_FS_441K;
1917 rate = AUDIO_FS_48K;
1920 rate = AUDIO_FS_882K;
1923 rate = AUDIO_FS_96K;
1926 rate = AUDIO_FS_1764K;
1929 rate = AUDIO_FS_192K;
1932 DRM_DEV_DEBUG_DRIVER(dev, "sample rate: %d not support",
1933 params->sample_rate);
1936 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client,
1937 AUDIO_CHANNEL_STATUS_4,
1939 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
1940 AP_AV_STATUS, AP_AUDIO_CHG);
1942 DRM_DEV_ERROR(dev, "IO error : config audio.\n");
1949 static void anx7625_audio_shutdown(struct device *dev, void *data)
1951 DRM_DEV_DEBUG_DRIVER(dev, "stop audio\n");
1954 static int anx7625_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
1955 struct device_node *endpoint)
1957 struct of_endpoint of_ep;
1960 ret = of_graph_parse_endpoint(endpoint, &of_ep);
1965 * HDMI sound should be located at external DPI port
1966 * Didn't have good way to check where is internal(DSI)
1967 * or external(DPI) bridge
1973 anx7625_audio_update_connector_status(struct anx7625_data *ctx,
1974 enum drm_connector_status status)
1976 if (ctx->plugged_cb && ctx->codec_dev) {
1977 ctx->plugged_cb(ctx->codec_dev,
1978 status == connector_status_connected);
1982 static int anx7625_audio_hook_plugged_cb(struct device *dev, void *data,
1983 hdmi_codec_plugged_cb fn,
1984 struct device *codec_dev)
1986 struct anx7625_data *ctx = data;
1988 ctx->plugged_cb = fn;
1989 ctx->codec_dev = codec_dev;
1990 anx7625_audio_update_connector_status(ctx, anx7625_sink_detect(ctx));
1995 static int anx7625_audio_get_eld(struct device *dev, void *data,
1996 u8 *buf, size_t len)
1998 struct anx7625_data *ctx = dev_get_drvdata(dev);
2000 if (!ctx->connector) {
2001 /* Pass en empty ELD if connector not available */
2002 memset(buf, 0, len);
2004 dev_dbg(dev, "audio copy eld\n");
2005 memcpy(buf, ctx->connector->eld,
2006 min(sizeof(ctx->connector->eld), len));
2012 static const struct hdmi_codec_ops anx7625_codec_ops = {
2013 .hw_params = anx7625_audio_hw_params,
2014 .audio_shutdown = anx7625_audio_shutdown,
2015 .get_eld = anx7625_audio_get_eld,
2016 .get_dai_id = anx7625_hdmi_i2s_get_dai_id,
2017 .hook_plugged_cb = anx7625_audio_hook_plugged_cb,
2020 static void anx7625_unregister_audio(struct anx7625_data *ctx)
2022 struct device *dev = ctx->dev;
2024 if (ctx->audio_pdev) {
2025 platform_device_unregister(ctx->audio_pdev);
2026 ctx->audio_pdev = NULL;
2029 DRM_DEV_DEBUG_DRIVER(dev, "unbound to %s", HDMI_CODEC_DRV_NAME);
2032 static int anx7625_register_audio(struct device *dev, struct anx7625_data *ctx)
2034 struct hdmi_codec_pdata codec_data = {
2035 .ops = &anx7625_codec_ops,
2036 .max_i2s_channels = 8,
2041 ctx->audio_pdev = platform_device_register_data(dev,
2042 HDMI_CODEC_DRV_NAME,
2043 PLATFORM_DEVID_AUTO,
2045 sizeof(codec_data));
2047 if (IS_ERR(ctx->audio_pdev))
2048 return PTR_ERR(ctx->audio_pdev);
2050 DRM_DEV_DEBUG_DRIVER(dev, "bound to %s", HDMI_CODEC_DRV_NAME);
2055 static int anx7625_setup_dsi_device(struct anx7625_data *ctx)
2057 struct mipi_dsi_device *dsi;
2058 struct device *dev = ctx->dev;
2059 struct mipi_dsi_host *host;
2060 const struct mipi_dsi_device_info info = {
2066 host = of_find_mipi_dsi_host_by_node(ctx->pdata.mipi_host_node);
2068 return dev_err_probe(dev, -EPROBE_DEFER, "fail to find dsi host.\n");
2070 dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
2072 DRM_DEV_ERROR(dev, "fail to create dsi device.\n");
2076 dsi->lanes = ctx->pdata.mipi_lanes;
2077 dsi->format = MIPI_DSI_FMT_RGB888;
2078 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
2079 MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
2080 MIPI_DSI_MODE_VIDEO_HSE |
2081 MIPI_DSI_HS_PKT_END_ALIGNED;
2088 static int anx7625_attach_dsi(struct anx7625_data *ctx)
2090 struct device *dev = ctx->dev;
2093 DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n");
2095 ret = devm_mipi_dsi_attach(dev, ctx->dsi);
2097 DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n");
2101 DRM_DEV_DEBUG_DRIVER(dev, "attach dsi succeeded.\n");
2106 static void hdcp_check_work_func(struct work_struct *work)
2109 struct delayed_work *dwork;
2110 struct anx7625_data *ctx;
2112 struct drm_device *drm_dev;
2114 dwork = to_delayed_work(work);
2115 ctx = container_of(dwork, struct anx7625_data, hdcp_work);
2118 if (!ctx->connector) {
2119 dev_err(dev, "HDCP connector is null!");
2123 drm_dev = ctx->connector->dev;
2124 drm_modeset_lock(&drm_dev->mode_config.connection_mutex, NULL);
2125 mutex_lock(&ctx->hdcp_wq_lock);
2127 status = anx7625_reg_read(ctx, ctx->i2c.tx_p0_client, 0);
2128 dev_dbg(dev, "sink HDCP status check: %.02x\n", status);
2129 if (status & BIT(1)) {
2130 ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_ENABLED;
2131 drm_hdcp_update_content_protection(ctx->connector,
2133 dev_dbg(dev, "update CP to ENABLE\n");
2136 mutex_unlock(&ctx->hdcp_wq_lock);
2137 drm_modeset_unlock(&drm_dev->mode_config.connection_mutex);
2140 static int anx7625_connector_atomic_check(struct anx7625_data *ctx,
2141 struct drm_connector_state *state)
2143 struct device *dev = ctx->dev;
2146 dev_dbg(dev, "hdcp state check\n");
2147 cp = state->content_protection;
2149 if (cp == ctx->hdcp_cp)
2152 if (cp == DRM_MODE_CONTENT_PROTECTION_DESIRED) {
2154 dev_dbg(dev, "enable HDCP\n");
2155 anx7625_hdcp_enable(ctx);
2157 queue_delayed_work(ctx->hdcp_workqueue,
2159 msecs_to_jiffies(2000));
2163 if (cp == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
2164 if (ctx->hdcp_cp != DRM_MODE_CONTENT_PROTECTION_ENABLED) {
2165 dev_err(dev, "current CP is not ENABLED\n");
2168 anx7625_hdcp_disable(ctx);
2169 ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
2170 drm_hdcp_update_content_protection(ctx->connector,
2172 dev_dbg(dev, "update CP to UNDESIRE\n");
2175 if (cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
2176 dev_err(dev, "Userspace illegal set to PROTECTION ENABLE\n");
2183 static int anx7625_bridge_attach(struct drm_bridge *bridge,
2184 enum drm_bridge_attach_flags flags)
2186 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2188 struct device *dev = ctx->dev;
2190 DRM_DEV_DEBUG_DRIVER(dev, "drm attach\n");
2191 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
2194 ctx->aux.drm_dev = bridge->dev;
2195 err = drm_dp_aux_register(&ctx->aux);
2197 dev_err(dev, "failed to register aux channel: %d\n", err);
2201 if (ctx->pdata.panel_bridge) {
2202 err = drm_bridge_attach(bridge->encoder,
2203 ctx->pdata.panel_bridge,
2204 &ctx->bridge, flags);
2209 ctx->bridge_attached = 1;
2214 static void anx7625_bridge_detach(struct drm_bridge *bridge)
2216 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2218 drm_dp_aux_unregister(&ctx->aux);
2221 static enum drm_mode_status
2222 anx7625_bridge_mode_valid(struct drm_bridge *bridge,
2223 const struct drm_display_info *info,
2224 const struct drm_display_mode *mode)
2226 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2227 struct device *dev = ctx->dev;
2229 DRM_DEV_DEBUG_DRIVER(dev, "drm mode checking\n");
2231 /* Max 1200p at 5.4 Ghz, one lane, pixel clock 300M */
2232 if (mode->clock > SUPPORT_PIXEL_CLOCK) {
2233 DRM_DEV_DEBUG_DRIVER(dev,
2234 "drm mode invalid, pixelclock too high.\n");
2235 return MODE_CLOCK_HIGH;
2238 DRM_DEV_DEBUG_DRIVER(dev, "drm mode valid.\n");
2243 static void anx7625_bridge_mode_set(struct drm_bridge *bridge,
2244 const struct drm_display_mode *old_mode,
2245 const struct drm_display_mode *mode)
2247 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2248 struct device *dev = ctx->dev;
2250 DRM_DEV_DEBUG_DRIVER(dev, "drm mode set\n");
2252 ctx->dt.pixelclock.min = mode->clock;
2253 ctx->dt.hactive.min = mode->hdisplay;
2254 ctx->dt.hsync_len.min = mode->hsync_end - mode->hsync_start;
2255 ctx->dt.hfront_porch.min = mode->hsync_start - mode->hdisplay;
2256 ctx->dt.hback_porch.min = mode->htotal - mode->hsync_end;
2257 ctx->dt.vactive.min = mode->vdisplay;
2258 ctx->dt.vsync_len.min = mode->vsync_end - mode->vsync_start;
2259 ctx->dt.vfront_porch.min = mode->vsync_start - mode->vdisplay;
2260 ctx->dt.vback_porch.min = mode->vtotal - mode->vsync_end;
2262 ctx->display_timing_valid = 1;
2264 DRM_DEV_DEBUG_DRIVER(dev, "pixelclock(%d).\n", ctx->dt.pixelclock.min);
2265 DRM_DEV_DEBUG_DRIVER(dev, "hactive(%d), hsync(%d), hfp(%d), hbp(%d)\n",
2266 ctx->dt.hactive.min,
2267 ctx->dt.hsync_len.min,
2268 ctx->dt.hfront_porch.min,
2269 ctx->dt.hback_porch.min);
2270 DRM_DEV_DEBUG_DRIVER(dev, "vactive(%d), vsync(%d), vfp(%d), vbp(%d)\n",
2271 ctx->dt.vactive.min,
2272 ctx->dt.vsync_len.min,
2273 ctx->dt.vfront_porch.min,
2274 ctx->dt.vback_porch.min);
2275 DRM_DEV_DEBUG_DRIVER(dev, "hdisplay(%d),hsync_start(%d).\n",
2278 DRM_DEV_DEBUG_DRIVER(dev, "hsync_end(%d),htotal(%d).\n",
2281 DRM_DEV_DEBUG_DRIVER(dev, "vdisplay(%d),vsync_start(%d).\n",
2284 DRM_DEV_DEBUG_DRIVER(dev, "vsync_end(%d),vtotal(%d).\n",
2289 static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge,
2290 const struct drm_display_mode *mode,
2291 struct drm_display_mode *adj)
2293 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2294 struct device *dev = ctx->dev;
2295 u32 hsync, hfp, hbp, hblanking;
2296 u32 adj_hsync, adj_hfp, adj_hbp, adj_hblanking, delta_adj;
2297 u32 vref, adj_clock;
2299 DRM_DEV_DEBUG_DRIVER(dev, "drm mode fixup set\n");
2301 /* No need fixup for external monitor */
2302 if (!ctx->pdata.panel_bridge)
2305 hsync = mode->hsync_end - mode->hsync_start;
2306 hfp = mode->hsync_start - mode->hdisplay;
2307 hbp = mode->htotal - mode->hsync_end;
2308 hblanking = mode->htotal - mode->hdisplay;
2310 DRM_DEV_DEBUG_DRIVER(dev, "before mode fixup\n");
2311 DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n",
2312 hsync, hfp, hbp, adj->clock);
2313 DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n",
2314 adj->hsync_start, adj->hsync_end, adj->htotal);
2319 adj_hblanking = hblanking;
2321 /* HFP needs to be even */
2327 /* HBP needs to be even */
2333 /* HSYNC needs to be even */
2335 if (adj_hblanking < hblanking)
2342 * Once illegal timing detected, use default HFP, HSYNC, HBP
2343 * This adjusting made for built-in eDP panel, for the externel
2344 * DP monitor, may need return false.
2346 if (hblanking < HBLANKING_MIN || (hfp < HP_MIN && hbp < HP_MIN)) {
2347 adj_hsync = SYNC_LEN_DEF;
2348 adj_hfp = HFP_HBP_DEF;
2349 adj_hbp = HFP_HBP_DEF;
2350 vref = adj->clock * 1000 / (adj->htotal * adj->vtotal);
2351 if (hblanking < HBLANKING_MIN) {
2352 delta_adj = HBLANKING_MIN - hblanking;
2353 adj_clock = vref * delta_adj * adj->vtotal;
2354 adj->clock += DIV_ROUND_UP(adj_clock, 1000);
2356 delta_adj = hblanking - HBLANKING_MIN;
2357 adj_clock = vref * delta_adj * adj->vtotal;
2358 adj->clock -= DIV_ROUND_UP(adj_clock, 1000);
2361 DRM_WARN("illegal hblanking timing, use default.\n");
2362 DRM_WARN("hfp(%d), hbp(%d), hsync(%d).\n", hfp, hbp, hsync);
2363 } else if (adj_hfp < HP_MIN) {
2364 /* Adjust hfp if hfp less than HP_MIN */
2365 delta_adj = HP_MIN - adj_hfp;
2369 * Balance total HBlanking pixel, if HBP does not have enough
2370 * space, adjust HSYNC length, otherwise adjust HBP
2372 if ((adj_hbp - delta_adj) < HP_MIN)
2373 /* HBP not enough space */
2374 adj_hsync -= delta_adj;
2376 adj_hbp -= delta_adj;
2377 } else if (adj_hbp < HP_MIN) {
2378 delta_adj = HP_MIN - adj_hbp;
2382 * Balance total HBlanking pixel, if HBP hasn't enough space,
2383 * adjust HSYNC length, otherwize adjust HBP
2385 if ((adj_hfp - delta_adj) < HP_MIN)
2386 /* HFP not enough space */
2387 adj_hsync -= delta_adj;
2389 adj_hfp -= delta_adj;
2392 DRM_DEV_DEBUG_DRIVER(dev, "after mode fixup\n");
2393 DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n",
2394 adj_hsync, adj_hfp, adj_hbp, adj->clock);
2396 /* Reconstruct timing */
2397 adj->hsync_start = adj->hdisplay + adj_hfp;
2398 adj->hsync_end = adj->hsync_start + adj_hsync;
2399 adj->htotal = adj->hsync_end + adj_hbp;
2400 DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n",
2401 adj->hsync_start, adj->hsync_end, adj->htotal);
2406 static int anx7625_bridge_atomic_check(struct drm_bridge *bridge,
2407 struct drm_bridge_state *bridge_state,
2408 struct drm_crtc_state *crtc_state,
2409 struct drm_connector_state *conn_state)
2411 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2412 struct device *dev = ctx->dev;
2414 dev_dbg(dev, "drm bridge atomic check\n");
2416 anx7625_bridge_mode_fixup(bridge, &crtc_state->mode,
2417 &crtc_state->adjusted_mode);
2419 return anx7625_connector_atomic_check(ctx, conn_state);
2422 static void anx7625_bridge_atomic_enable(struct drm_bridge *bridge,
2423 struct drm_bridge_state *state)
2425 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2426 struct device *dev = ctx->dev;
2427 struct drm_connector *connector;
2429 dev_dbg(dev, "drm atomic enable\n");
2431 connector = drm_atomic_get_new_connector_for_encoder(state->base.state,
2436 ctx->connector = connector;
2438 pm_runtime_get_sync(dev);
2439 _anx7625_hpd_polling(ctx, 5000 * 100);
2441 anx7625_dp_start(ctx);
2444 static void anx7625_bridge_atomic_disable(struct drm_bridge *bridge,
2445 struct drm_bridge_state *old)
2447 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2448 struct device *dev = ctx->dev;
2450 dev_dbg(dev, "drm atomic disable\n");
2452 ctx->connector = NULL;
2453 anx7625_dp_stop(ctx);
2455 mutex_lock(&ctx->aux_lock);
2456 pm_runtime_put_sync_suspend(dev);
2457 mutex_unlock(&ctx->aux_lock);
2461 anx7625_audio_update_connector_status(struct anx7625_data *ctx,
2462 enum drm_connector_status status);
2464 static enum drm_connector_status
2465 anx7625_bridge_detect(struct drm_bridge *bridge)
2467 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2468 struct device *dev = ctx->dev;
2469 enum drm_connector_status status;
2471 DRM_DEV_DEBUG_DRIVER(dev, "drm bridge detect\n");
2473 status = anx7625_sink_detect(ctx);
2474 anx7625_audio_update_connector_status(ctx, status);
2478 static const struct drm_edid *anx7625_bridge_edid_read(struct drm_bridge *bridge,
2479 struct drm_connector *connector)
2481 struct anx7625_data *ctx = bridge_to_anx7625(bridge);
2482 struct device *dev = ctx->dev;
2484 DRM_DEV_DEBUG_DRIVER(dev, "drm bridge get edid\n");
2486 return anx7625_edid_read(ctx);
2489 static const struct drm_bridge_funcs anx7625_bridge_funcs = {
2490 .attach = anx7625_bridge_attach,
2491 .detach = anx7625_bridge_detach,
2492 .mode_valid = anx7625_bridge_mode_valid,
2493 .mode_set = anx7625_bridge_mode_set,
2494 .atomic_check = anx7625_bridge_atomic_check,
2495 .atomic_enable = anx7625_bridge_atomic_enable,
2496 .atomic_disable = anx7625_bridge_atomic_disable,
2497 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
2498 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
2499 .atomic_reset = drm_atomic_helper_bridge_reset,
2500 .detect = anx7625_bridge_detect,
2501 .edid_read = anx7625_bridge_edid_read,
2504 static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx,
2505 struct i2c_client *client)
2507 struct device *dev = ctx->dev;
2509 ctx->i2c.tx_p0_client = devm_i2c_new_dummy_device(dev, client->adapter,
2511 if (IS_ERR(ctx->i2c.tx_p0_client))
2512 return PTR_ERR(ctx->i2c.tx_p0_client);
2514 ctx->i2c.tx_p1_client = devm_i2c_new_dummy_device(dev, client->adapter,
2516 if (IS_ERR(ctx->i2c.tx_p1_client))
2517 return PTR_ERR(ctx->i2c.tx_p1_client);
2519 ctx->i2c.tx_p2_client = devm_i2c_new_dummy_device(dev, client->adapter,
2521 if (IS_ERR(ctx->i2c.tx_p2_client))
2522 return PTR_ERR(ctx->i2c.tx_p2_client);
2524 ctx->i2c.rx_p0_client = devm_i2c_new_dummy_device(dev, client->adapter,
2526 if (IS_ERR(ctx->i2c.rx_p0_client))
2527 return PTR_ERR(ctx->i2c.rx_p0_client);
2529 ctx->i2c.rx_p1_client = devm_i2c_new_dummy_device(dev, client->adapter,
2531 if (IS_ERR(ctx->i2c.rx_p1_client))
2532 return PTR_ERR(ctx->i2c.rx_p1_client);
2534 ctx->i2c.rx_p2_client = devm_i2c_new_dummy_device(dev, client->adapter,
2536 if (IS_ERR(ctx->i2c.rx_p2_client))
2537 return PTR_ERR(ctx->i2c.rx_p2_client);
2539 ctx->i2c.tcpc_client = devm_i2c_new_dummy_device(dev, client->adapter,
2540 TCPC_INTERFACE_ADDR >> 1);
2541 if (IS_ERR(ctx->i2c.tcpc_client))
2542 return PTR_ERR(ctx->i2c.tcpc_client);
2547 static int __maybe_unused anx7625_runtime_pm_suspend(struct device *dev)
2549 struct anx7625_data *ctx = dev_get_drvdata(dev);
2551 mutex_lock(&ctx->lock);
2553 anx7625_stop_dp_work(ctx);
2554 if (!ctx->pdata.panel_bridge)
2555 anx7625_remove_edid(ctx);
2556 anx7625_power_standby(ctx);
2558 mutex_unlock(&ctx->lock);
2563 static int __maybe_unused anx7625_runtime_pm_resume(struct device *dev)
2565 struct anx7625_data *ctx = dev_get_drvdata(dev);
2567 mutex_lock(&ctx->lock);
2569 anx7625_power_on_init(ctx);
2571 mutex_unlock(&ctx->lock);
2576 static const struct dev_pm_ops anx7625_pm_ops = {
2577 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
2578 pm_runtime_force_resume)
2579 SET_RUNTIME_PM_OPS(anx7625_runtime_pm_suspend,
2580 anx7625_runtime_pm_resume, NULL)
2583 static void anx7625_runtime_disable(void *data)
2585 pm_runtime_dont_use_autosuspend(data);
2586 pm_runtime_disable(data);
2589 static int anx7625_link_bridge(struct drm_dp_aux *aux)
2591 struct anx7625_data *platform = container_of(aux, struct anx7625_data, aux);
2592 struct device *dev = aux->dev;
2595 ret = anx7625_parse_dt_panel(dev, &platform->pdata);
2597 DRM_DEV_ERROR(dev, "fail to parse DT for panel : %d\n", ret);
2601 platform->bridge.funcs = &anx7625_bridge_funcs;
2602 platform->bridge.of_node = dev->of_node;
2603 if (!anx7625_of_panel_on_aux_bus(dev))
2604 platform->bridge.ops |= DRM_BRIDGE_OP_EDID;
2605 if (!platform->pdata.panel_bridge)
2606 platform->bridge.ops |= DRM_BRIDGE_OP_HPD |
2607 DRM_BRIDGE_OP_DETECT;
2608 platform->bridge.type = platform->pdata.panel_bridge ?
2609 DRM_MODE_CONNECTOR_eDP :
2610 DRM_MODE_CONNECTOR_DisplayPort;
2612 drm_bridge_add(&platform->bridge);
2614 if (!platform->pdata.is_dpi) {
2615 ret = anx7625_attach_dsi(platform);
2617 drm_bridge_remove(&platform->bridge);
2623 static int anx7625_i2c_probe(struct i2c_client *client)
2625 struct anx7625_data *platform;
2626 struct anx7625_platform_data *pdata;
2628 struct device *dev = &client->dev;
2630 if (!i2c_check_functionality(client->adapter,
2631 I2C_FUNC_SMBUS_I2C_BLOCK)) {
2632 DRM_DEV_ERROR(dev, "anx7625's i2c bus doesn't support\n");
2636 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
2638 DRM_DEV_ERROR(dev, "fail to allocate driver data\n");
2642 pdata = &platform->pdata;
2644 platform->dev = &client->dev;
2645 i2c_set_clientdata(client, platform);
2647 pdata->supplies[0].supply = "vdd10";
2648 pdata->supplies[1].supply = "vdd18";
2649 pdata->supplies[2].supply = "vdd33";
2650 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pdata->supplies),
2653 DRM_DEV_ERROR(dev, "fail to get power supplies: %d\n", ret);
2656 anx7625_init_gpio(platform);
2658 mutex_init(&platform->lock);
2659 mutex_init(&platform->hdcp_wq_lock);
2660 mutex_init(&platform->aux_lock);
2662 INIT_DELAYED_WORK(&platform->hdcp_work, hdcp_check_work_func);
2663 platform->hdcp_workqueue = create_workqueue("hdcp workqueue");
2664 if (!platform->hdcp_workqueue) {
2665 dev_err(dev, "fail to create work queue\n");
2670 platform->pdata.intp_irq = client->irq;
2671 if (platform->pdata.intp_irq) {
2672 INIT_WORK(&platform->work, anx7625_work_func);
2673 platform->workqueue = alloc_workqueue("anx7625_work",
2674 WQ_FREEZABLE | WQ_MEM_RECLAIM, 1);
2675 if (!platform->workqueue) {
2676 DRM_DEV_ERROR(dev, "fail to create work queue\n");
2681 ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq,
2682 NULL, anx7625_intr_hpd_isr,
2683 IRQF_TRIGGER_FALLING |
2685 "anx7625-intp", platform);
2687 DRM_DEV_ERROR(dev, "fail to request irq\n");
2692 platform->aux.name = "anx7625-aux";
2693 platform->aux.dev = dev;
2694 platform->aux.transfer = anx7625_aux_transfer;
2695 platform->aux.wait_hpd_asserted = anx7625_wait_hpd_asserted;
2696 drm_dp_aux_init(&platform->aux);
2698 ret = anx7625_parse_dt(dev, pdata);
2700 if (ret != -EPROBE_DEFER)
2701 DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret);
2705 if (!platform->pdata.is_dpi) {
2706 ret = anx7625_setup_dsi_device(platform);
2712 * Registering the i2c devices will retrigger deferred probe, so it
2713 * needs to be done after calls that might return EPROBE_DEFER,
2714 * otherwise we can get an infinite loop.
2716 if (anx7625_register_i2c_dummy_clients(platform, client) != 0) {
2718 DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n");
2722 pm_runtime_enable(dev);
2723 pm_runtime_set_autosuspend_delay(dev, 1000);
2724 pm_runtime_use_autosuspend(dev);
2725 pm_suspend_ignore_children(dev, true);
2726 ret = devm_add_action_or_reset(dev, anx7625_runtime_disable, dev);
2731 * Populating the aux bus will retrigger deferred probe, so it needs to
2732 * be done after calls that might return EPROBE_DEFER, otherwise we can
2733 * get an infinite loop.
2735 ret = devm_of_dp_aux_populate_bus(&platform->aux, anx7625_link_bridge);
2737 if (ret != -ENODEV) {
2738 DRM_DEV_ERROR(dev, "failed to populate aux bus : %d\n", ret);
2742 ret = anx7625_link_bridge(&platform->aux);
2747 if (!platform->pdata.low_power_mode) {
2748 anx7625_disable_pd_protocol(platform);
2749 pm_runtime_get_sync(dev);
2750 _anx7625_hpd_polling(platform, 5000 * 100);
2753 /* Add work function */
2754 if (platform->pdata.intp_irq)
2755 queue_work(platform->workqueue, &platform->work);
2757 if (platform->pdata.audio_en)
2758 anx7625_register_audio(dev, platform);
2760 DRM_DEV_DEBUG_DRIVER(dev, "probe done\n");
2765 if (platform->workqueue)
2766 destroy_workqueue(platform->workqueue);
2769 if (platform->hdcp_workqueue)
2770 destroy_workqueue(platform->hdcp_workqueue);
2775 static void anx7625_i2c_remove(struct i2c_client *client)
2777 struct anx7625_data *platform = i2c_get_clientdata(client);
2779 drm_bridge_remove(&platform->bridge);
2781 if (platform->pdata.intp_irq)
2782 destroy_workqueue(platform->workqueue);
2784 if (platform->hdcp_workqueue) {
2785 cancel_delayed_work(&platform->hdcp_work);
2786 flush_workqueue(platform->hdcp_workqueue);
2787 destroy_workqueue(platform->hdcp_workqueue);
2790 if (!platform->pdata.low_power_mode)
2791 pm_runtime_put_sync_suspend(&client->dev);
2793 if (platform->pdata.audio_en)
2794 anx7625_unregister_audio(platform);
2797 static const struct i2c_device_id anx7625_id[] = {
2802 MODULE_DEVICE_TABLE(i2c, anx7625_id);
2804 static const struct of_device_id anx_match_table[] = {
2805 {.compatible = "analogix,anx7625",},
2808 MODULE_DEVICE_TABLE(of, anx_match_table);
2810 static struct i2c_driver anx7625_driver = {
2813 .of_match_table = anx_match_table,
2814 .pm = &anx7625_pm_ops,
2816 .probe = anx7625_i2c_probe,
2817 .remove = anx7625_i2c_remove,
2819 .id_table = anx7625_id,
2822 module_i2c_driver(anx7625_driver);
2824 MODULE_DESCRIPTION("MIPI2DP anx7625 driver");
2826 MODULE_LICENSE("GPL v2");
2827 MODULE_VERSION(ANX7625_DRV_VERSION);