2 * Copyright (C) 2009 Nokia Corporation
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #define DSS_SUBSYS_NAME "DSI"
20 #include <linux/kernel.h>
21 #include <linux/mfd/syscon.h>
22 #include <linux/regmap.h>
24 #include <linux/clk.h>
25 #include <linux/device.h>
26 #include <linux/err.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/mutex.h>
30 #include <linux/module.h>
31 #include <linux/semaphore.h>
32 #include <linux/seq_file.h>
33 #include <linux/platform_device.h>
34 #include <linux/regulator/consumer.h>
35 #include <linux/wait.h>
36 #include <linux/workqueue.h>
37 #include <linux/sched.h>
38 #include <linux/slab.h>
39 #include <linux/debugfs.h>
40 #include <linux/pm_runtime.h>
42 #include <linux/of_graph.h>
43 #include <linux/of_platform.h>
44 #include <linux/component.h>
45 #include <linux/sys_soc.h>
47 #include <video/mipi_display.h>
52 #define DSI_CATCH_MISSING_TE
54 struct dsi_reg { u16 module; u16 idx; };
56 #define DSI_REG(mod, idx) ((const struct dsi_reg) { mod, idx })
58 /* DSI Protocol Engine */
61 #define DSI_PROTO_SZ 0x200
63 #define DSI_REVISION DSI_REG(DSI_PROTO, 0x0000)
64 #define DSI_SYSCONFIG DSI_REG(DSI_PROTO, 0x0010)
65 #define DSI_SYSSTATUS DSI_REG(DSI_PROTO, 0x0014)
66 #define DSI_IRQSTATUS DSI_REG(DSI_PROTO, 0x0018)
67 #define DSI_IRQENABLE DSI_REG(DSI_PROTO, 0x001C)
68 #define DSI_CTRL DSI_REG(DSI_PROTO, 0x0040)
69 #define DSI_GNQ DSI_REG(DSI_PROTO, 0x0044)
70 #define DSI_COMPLEXIO_CFG1 DSI_REG(DSI_PROTO, 0x0048)
71 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(DSI_PROTO, 0x004C)
72 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(DSI_PROTO, 0x0050)
73 #define DSI_CLK_CTRL DSI_REG(DSI_PROTO, 0x0054)
74 #define DSI_TIMING1 DSI_REG(DSI_PROTO, 0x0058)
75 #define DSI_TIMING2 DSI_REG(DSI_PROTO, 0x005C)
76 #define DSI_VM_TIMING1 DSI_REG(DSI_PROTO, 0x0060)
77 #define DSI_VM_TIMING2 DSI_REG(DSI_PROTO, 0x0064)
78 #define DSI_VM_TIMING3 DSI_REG(DSI_PROTO, 0x0068)
79 #define DSI_CLK_TIMING DSI_REG(DSI_PROTO, 0x006C)
80 #define DSI_TX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0070)
81 #define DSI_RX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0074)
82 #define DSI_COMPLEXIO_CFG2 DSI_REG(DSI_PROTO, 0x0078)
83 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(DSI_PROTO, 0x007C)
84 #define DSI_VM_TIMING4 DSI_REG(DSI_PROTO, 0x0080)
85 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(DSI_PROTO, 0x0084)
86 #define DSI_VM_TIMING5 DSI_REG(DSI_PROTO, 0x0088)
87 #define DSI_VM_TIMING6 DSI_REG(DSI_PROTO, 0x008C)
88 #define DSI_VM_TIMING7 DSI_REG(DSI_PROTO, 0x0090)
89 #define DSI_STOPCLK_TIMING DSI_REG(DSI_PROTO, 0x0094)
90 #define DSI_VC_CTRL(n) DSI_REG(DSI_PROTO, 0x0100 + (n * 0x20))
91 #define DSI_VC_TE(n) DSI_REG(DSI_PROTO, 0x0104 + (n * 0x20))
92 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0108 + (n * 0x20))
93 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(DSI_PROTO, 0x010C + (n * 0x20))
94 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0110 + (n * 0x20))
95 #define DSI_VC_IRQSTATUS(n) DSI_REG(DSI_PROTO, 0x0118 + (n * 0x20))
96 #define DSI_VC_IRQENABLE(n) DSI_REG(DSI_PROTO, 0x011C + (n * 0x20))
101 #define DSI_PHY_OFFSET 0x200
102 #define DSI_PHY_SZ 0x40
104 #define DSI_DSIPHY_CFG0 DSI_REG(DSI_PHY, 0x0000)
105 #define DSI_DSIPHY_CFG1 DSI_REG(DSI_PHY, 0x0004)
106 #define DSI_DSIPHY_CFG2 DSI_REG(DSI_PHY, 0x0008)
107 #define DSI_DSIPHY_CFG5 DSI_REG(DSI_PHY, 0x0014)
108 #define DSI_DSIPHY_CFG10 DSI_REG(DSI_PHY, 0x0028)
110 /* DSI_PLL_CTRL_SCP */
113 #define DSI_PLL_OFFSET 0x300
114 #define DSI_PLL_SZ 0x20
116 #define DSI_PLL_CONTROL DSI_REG(DSI_PLL, 0x0000)
117 #define DSI_PLL_STATUS DSI_REG(DSI_PLL, 0x0004)
118 #define DSI_PLL_GO DSI_REG(DSI_PLL, 0x0008)
119 #define DSI_PLL_CONFIGURATION1 DSI_REG(DSI_PLL, 0x000C)
120 #define DSI_PLL_CONFIGURATION2 DSI_REG(DSI_PLL, 0x0010)
122 #define REG_GET(dsi, idx, start, end) \
123 FLD_GET(dsi_read_reg(dsi, idx), start, end)
125 #define REG_FLD_MOD(dsi, idx, val, start, end) \
126 dsi_write_reg(dsi, idx, FLD_MOD(dsi_read_reg(dsi, idx), val, start, end))
128 /* Global interrupts */
129 #define DSI_IRQ_VC0 (1 << 0)
130 #define DSI_IRQ_VC1 (1 << 1)
131 #define DSI_IRQ_VC2 (1 << 2)
132 #define DSI_IRQ_VC3 (1 << 3)
133 #define DSI_IRQ_WAKEUP (1 << 4)
134 #define DSI_IRQ_RESYNC (1 << 5)
135 #define DSI_IRQ_PLL_LOCK (1 << 7)
136 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
137 #define DSI_IRQ_PLL_RECALL (1 << 9)
138 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
139 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
140 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
141 #define DSI_IRQ_TE_TRIGGER (1 << 16)
142 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
143 #define DSI_IRQ_SYNC_LOST (1 << 18)
144 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
145 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
146 #define DSI_IRQ_ERROR_MASK \
147 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
149 #define DSI_IRQ_CHANNEL_MASK 0xf
151 /* Virtual channel interrupts */
152 #define DSI_VC_IRQ_CS (1 << 0)
153 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
154 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
155 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
156 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
157 #define DSI_VC_IRQ_BTA (1 << 5)
158 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
159 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
160 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
161 #define DSI_VC_IRQ_ERROR_MASK \
162 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
163 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
164 DSI_VC_IRQ_FIFO_TX_UDF)
166 /* ComplexIO interrupts */
167 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
168 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
169 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
170 #define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3)
171 #define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4)
172 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
173 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
174 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
175 #define DSI_CIO_IRQ_ERRESC4 (1 << 8)
176 #define DSI_CIO_IRQ_ERRESC5 (1 << 9)
177 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
178 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
179 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
180 #define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13)
181 #define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14)
182 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
183 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
184 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
185 #define DSI_CIO_IRQ_STATEULPS4 (1 << 18)
186 #define DSI_CIO_IRQ_STATEULPS5 (1 << 19)
187 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
188 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
189 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
190 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
191 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
192 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
193 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26)
194 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27)
195 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28)
196 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29)
197 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
198 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
199 #define DSI_CIO_IRQ_ERROR_MASK \
200 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
201 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \
202 DSI_CIO_IRQ_ERRSYNCESC5 | \
203 DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
204 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \
205 DSI_CIO_IRQ_ERRESC5 | \
206 DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \
207 DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \
208 DSI_CIO_IRQ_ERRCONTROL5 | \
209 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
210 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
211 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \
212 DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \
213 DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5)
215 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
218 static int dsi_display_init_dispc(struct dsi_data *dsi);
219 static void dsi_display_uninit_dispc(struct dsi_data *dsi);
221 static int dsi_vc_send_null(struct dsi_data *dsi, int channel);
223 /* DSI PLL HSDIV indices */
224 #define HSDIV_DISPC 0
227 #define DSI_MAX_NR_ISRS 2
228 #define DSI_MAX_NR_LANES 5
236 enum dsi_lane_function {
245 struct dsi_lane_config {
246 enum dsi_lane_function function;
250 struct dsi_isr_data {
258 DSI_FIFO_SIZE_32 = 1,
259 DSI_FIFO_SIZE_64 = 2,
260 DSI_FIFO_SIZE_96 = 3,
261 DSI_FIFO_SIZE_128 = 4,
265 DSI_VC_SOURCE_L4 = 0,
269 struct dsi_irq_stats {
270 unsigned long last_reset;
271 unsigned int irq_count;
272 unsigned int dsi_irqs[32];
273 unsigned int vc_irqs[4][32];
274 unsigned int cio_irqs[32];
277 struct dsi_isr_tables {
278 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
279 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
280 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
283 struct dsi_clk_calc_ctx {
284 struct dsi_data *dsi;
289 const struct omap_dss_dsi_config *config;
291 unsigned long req_pck_min, req_pck_nom, req_pck_max;
295 struct dss_pll_clock_info dsi_cinfo;
296 struct dispc_clock_info dispc_cinfo;
299 struct omap_dss_dsi_videomode_timings dsi_vm;
302 struct dsi_lp_clock_info {
303 unsigned long lp_clk;
307 struct dsi_module_id_data {
313 DSI_QUIRK_PLL_PWR_BUG = (1 << 0), /* DSI-PLL power command 0x3 is not working */
314 DSI_QUIRK_DCS_CMD_CONFIG_VC = (1 << 1),
315 DSI_QUIRK_VC_OCP_WIDTH = (1 << 2),
316 DSI_QUIRK_REVERSE_TXCLKESC = (1 << 3),
317 DSI_QUIRK_GNQ = (1 << 4),
318 DSI_QUIRK_PHY_DCC = (1 << 5),
322 enum dsi_model model;
323 const struct dss_pll_hw *pll_hw;
324 const struct dsi_module_id_data *modules;
325 unsigned int max_fck_freq;
326 unsigned int max_pll_lpdiv;
327 enum dsi_quirks quirks;
332 void __iomem *proto_base;
333 void __iomem *phy_base;
334 void __iomem *pll_base;
336 const struct dsi_of_data *data;
344 struct regmap *syscon;
345 struct dss_device *dss;
347 struct dispc_clock_info user_dispc_cinfo;
348 struct dss_pll_clock_info user_dsi_cinfo;
350 struct dsi_lp_clock_info user_lp_cinfo;
351 struct dsi_lp_clock_info current_lp_cinfo;
355 bool vdds_dsi_enabled;
356 struct regulator *vdds_dsi_reg;
359 enum dsi_vc_source source;
360 struct omap_dss_device *dssdev;
361 enum fifo_size tx_fifo_size;
362 enum fifo_size rx_fifo_size;
367 struct semaphore bus_lock;
370 struct dsi_isr_tables isr_tables;
371 /* space for a copy used by the interrupt handler */
372 struct dsi_isr_tables isr_tables_copy;
375 #ifdef DSI_PERF_MEASURE
376 unsigned int update_bytes;
382 void (*framedone_callback)(int, void *);
383 void *framedone_data;
385 struct delayed_work framedone_timeout_work;
387 #ifdef DSI_CATCH_MISSING_TE
388 struct timer_list te_timer;
391 unsigned long cache_req_pck;
392 unsigned long cache_clk_freq;
393 struct dss_pll_clock_info cache_cinfo;
396 spinlock_t errors_lock;
397 #ifdef DSI_PERF_MEASURE
398 ktime_t perf_setup_time;
399 ktime_t perf_start_time;
404 struct dss_debugfs_entry *irqs;
405 struct dss_debugfs_entry *regs;
406 struct dss_debugfs_entry *clks;
409 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
410 spinlock_t irq_stats_lock;
411 struct dsi_irq_stats irq_stats;
414 unsigned int num_lanes_supported;
415 unsigned int line_buffer_size;
417 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
418 unsigned int num_lanes_used;
420 unsigned int scp_clk_refcount;
422 struct dss_lcd_mgr_config mgr_config;
424 enum omap_dss_dsi_pixel_format pix_fmt;
425 enum omap_dss_dsi_mode mode;
426 struct omap_dss_dsi_videomode_timings vm_timings;
428 struct omap_dss_device output;
431 struct dsi_packet_sent_handler_data {
432 struct dsi_data *dsi;
433 struct completion *completion;
436 #ifdef DSI_PERF_MEASURE
437 static bool dsi_perf;
438 module_param(dsi_perf, bool, 0644);
441 static inline struct dsi_data *to_dsi_data(struct omap_dss_device *dssdev)
443 return dev_get_drvdata(dssdev->dev);
446 static inline void dsi_write_reg(struct dsi_data *dsi,
447 const struct dsi_reg idx, u32 val)
452 case DSI_PROTO: base = dsi->proto_base; break;
453 case DSI_PHY: base = dsi->phy_base; break;
454 case DSI_PLL: base = dsi->pll_base; break;
458 __raw_writel(val, base + idx.idx);
461 static inline u32 dsi_read_reg(struct dsi_data *dsi, const struct dsi_reg idx)
466 case DSI_PROTO: base = dsi->proto_base; break;
467 case DSI_PHY: base = dsi->phy_base; break;
468 case DSI_PLL: base = dsi->pll_base; break;
472 return __raw_readl(base + idx.idx);
475 static void dsi_bus_lock(struct omap_dss_device *dssdev)
477 struct dsi_data *dsi = to_dsi_data(dssdev);
479 down(&dsi->bus_lock);
482 static void dsi_bus_unlock(struct omap_dss_device *dssdev)
484 struct dsi_data *dsi = to_dsi_data(dssdev);
489 static bool dsi_bus_is_locked(struct dsi_data *dsi)
491 return dsi->bus_lock.count == 0;
494 static void dsi_completion_handler(void *data, u32 mask)
496 complete((struct completion *)data);
499 static inline bool wait_for_bit_change(struct dsi_data *dsi,
500 const struct dsi_reg idx,
501 int bitnum, int value)
503 unsigned long timeout;
507 /* first busyloop to see if the bit changes right away */
510 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
514 /* then loop for 500ms, sleeping for 1ms in between */
515 timeout = jiffies + msecs_to_jiffies(500);
516 while (time_before(jiffies, timeout)) {
517 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
520 wait = ns_to_ktime(1000 * 1000);
521 set_current_state(TASK_UNINTERRUPTIBLE);
522 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
528 static u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
531 case OMAP_DSS_DSI_FMT_RGB888:
532 case OMAP_DSS_DSI_FMT_RGB666:
534 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
536 case OMAP_DSS_DSI_FMT_RGB565:
544 #ifdef DSI_PERF_MEASURE
545 static void dsi_perf_mark_setup(struct dsi_data *dsi)
547 dsi->perf_setup_time = ktime_get();
550 static void dsi_perf_mark_start(struct dsi_data *dsi)
552 dsi->perf_start_time = ktime_get();
555 static void dsi_perf_show(struct dsi_data *dsi, const char *name)
557 ktime_t t, setup_time, trans_time;
559 u32 setup_us, trans_us, total_us;
566 setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time);
567 setup_us = (u32)ktime_to_us(setup_time);
571 trans_time = ktime_sub(t, dsi->perf_start_time);
572 trans_us = (u32)ktime_to_us(trans_time);
576 total_us = setup_us + trans_us;
578 total_bytes = dsi->update_bytes;
580 pr_info("DSI(%s): %u us + %u us = %u us (%uHz), %u bytes, %u kbytes/sec\n",
585 1000 * 1000 / total_us,
587 total_bytes * 1000 / total_us);
590 static inline void dsi_perf_mark_setup(struct dsi_data *dsi)
594 static inline void dsi_perf_mark_start(struct dsi_data *dsi)
598 static inline void dsi_perf_show(struct dsi_data *dsi, const char *name)
603 static int verbose_irq;
605 static void print_irq_status(u32 status)
610 if (!verbose_irq && (status & ~DSI_IRQ_CHANNEL_MASK) == 0)
613 #define PIS(x) (status & DSI_IRQ_##x) ? (#x " ") : ""
615 pr_debug("DSI IRQ: 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
617 verbose_irq ? PIS(VC0) : "",
618 verbose_irq ? PIS(VC1) : "",
619 verbose_irq ? PIS(VC2) : "",
620 verbose_irq ? PIS(VC3) : "",
637 static void print_irq_status_vc(int channel, u32 status)
642 if (!verbose_irq && (status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
645 #define PIS(x) (status & DSI_VC_IRQ_##x) ? (#x " ") : ""
647 pr_debug("DSI VC(%d) IRQ 0x%x: %s%s%s%s%s%s%s%s%s\n",
653 verbose_irq ? PIS(PACKET_SENT) : "",
658 PIS(PP_BUSY_CHANGE));
662 static void print_irq_status_cio(u32 status)
667 #define PIS(x) (status & DSI_CIO_IRQ_##x) ? (#x " ") : ""
669 pr_debug("DSI CIO IRQ 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
683 PIS(ERRCONTENTIONLP0_1),
684 PIS(ERRCONTENTIONLP1_1),
685 PIS(ERRCONTENTIONLP0_2),
686 PIS(ERRCONTENTIONLP1_2),
687 PIS(ERRCONTENTIONLP0_3),
688 PIS(ERRCONTENTIONLP1_3),
689 PIS(ULPSACTIVENOT_ALL0),
690 PIS(ULPSACTIVENOT_ALL1));
694 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
695 static void dsi_collect_irq_stats(struct dsi_data *dsi, u32 irqstatus,
696 u32 *vcstatus, u32 ciostatus)
700 spin_lock(&dsi->irq_stats_lock);
702 dsi->irq_stats.irq_count++;
703 dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs);
705 for (i = 0; i < 4; ++i)
706 dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]);
708 dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs);
710 spin_unlock(&dsi->irq_stats_lock);
713 #define dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus)
716 static int debug_irq;
718 static void dsi_handle_irq_errors(struct dsi_data *dsi, u32 irqstatus,
719 u32 *vcstatus, u32 ciostatus)
723 if (irqstatus & DSI_IRQ_ERROR_MASK) {
724 DSSERR("DSI error, irqstatus %x\n", irqstatus);
725 print_irq_status(irqstatus);
726 spin_lock(&dsi->errors_lock);
727 dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK;
728 spin_unlock(&dsi->errors_lock);
729 } else if (debug_irq) {
730 print_irq_status(irqstatus);
733 for (i = 0; i < 4; ++i) {
734 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
735 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
737 print_irq_status_vc(i, vcstatus[i]);
738 } else if (debug_irq) {
739 print_irq_status_vc(i, vcstatus[i]);
743 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
744 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
745 print_irq_status_cio(ciostatus);
746 } else if (debug_irq) {
747 print_irq_status_cio(ciostatus);
751 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
752 unsigned int isr_array_size, u32 irqstatus)
754 struct dsi_isr_data *isr_data;
757 for (i = 0; i < isr_array_size; i++) {
758 isr_data = &isr_array[i];
759 if (isr_data->isr && isr_data->mask & irqstatus)
760 isr_data->isr(isr_data->arg, irqstatus);
764 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
765 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
769 dsi_call_isrs(isr_tables->isr_table,
770 ARRAY_SIZE(isr_tables->isr_table),
773 for (i = 0; i < 4; ++i) {
774 if (vcstatus[i] == 0)
776 dsi_call_isrs(isr_tables->isr_table_vc[i],
777 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
782 dsi_call_isrs(isr_tables->isr_table_cio,
783 ARRAY_SIZE(isr_tables->isr_table_cio),
787 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
789 struct dsi_data *dsi = arg;
790 u32 irqstatus, vcstatus[4], ciostatus;
793 if (!dsi->is_enabled)
796 spin_lock(&dsi->irq_lock);
798 irqstatus = dsi_read_reg(dsi, DSI_IRQSTATUS);
800 /* IRQ is not for us */
802 spin_unlock(&dsi->irq_lock);
806 dsi_write_reg(dsi, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
807 /* flush posted write */
808 dsi_read_reg(dsi, DSI_IRQSTATUS);
810 for (i = 0; i < 4; ++i) {
811 if ((irqstatus & (1 << i)) == 0) {
816 vcstatus[i] = dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
818 dsi_write_reg(dsi, DSI_VC_IRQSTATUS(i), vcstatus[i]);
819 /* flush posted write */
820 dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
823 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
824 ciostatus = dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
826 dsi_write_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
827 /* flush posted write */
828 dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
833 #ifdef DSI_CATCH_MISSING_TE
834 if (irqstatus & DSI_IRQ_TE_TRIGGER)
835 del_timer(&dsi->te_timer);
838 /* make a copy and unlock, so that isrs can unregister
840 memcpy(&dsi->isr_tables_copy, &dsi->isr_tables,
841 sizeof(dsi->isr_tables));
843 spin_unlock(&dsi->irq_lock);
845 dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus);
847 dsi_handle_irq_errors(dsi, irqstatus, vcstatus, ciostatus);
849 dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus);
854 /* dsi->irq_lock has to be locked by the caller */
855 static void _omap_dsi_configure_irqs(struct dsi_data *dsi,
856 struct dsi_isr_data *isr_array,
857 unsigned int isr_array_size,
859 const struct dsi_reg enable_reg,
860 const struct dsi_reg status_reg)
862 struct dsi_isr_data *isr_data;
869 for (i = 0; i < isr_array_size; i++) {
870 isr_data = &isr_array[i];
872 if (isr_data->isr == NULL)
875 mask |= isr_data->mask;
878 old_mask = dsi_read_reg(dsi, enable_reg);
879 /* clear the irqstatus for newly enabled irqs */
880 dsi_write_reg(dsi, status_reg, (mask ^ old_mask) & mask);
881 dsi_write_reg(dsi, enable_reg, mask);
883 /* flush posted writes */
884 dsi_read_reg(dsi, enable_reg);
885 dsi_read_reg(dsi, status_reg);
888 /* dsi->irq_lock has to be locked by the caller */
889 static void _omap_dsi_set_irqs(struct dsi_data *dsi)
891 u32 mask = DSI_IRQ_ERROR_MASK;
892 #ifdef DSI_CATCH_MISSING_TE
893 mask |= DSI_IRQ_TE_TRIGGER;
895 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table,
896 ARRAY_SIZE(dsi->isr_tables.isr_table), mask,
897 DSI_IRQENABLE, DSI_IRQSTATUS);
900 /* dsi->irq_lock has to be locked by the caller */
901 static void _omap_dsi_set_irqs_vc(struct dsi_data *dsi, int vc)
903 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_vc[vc],
904 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]),
905 DSI_VC_IRQ_ERROR_MASK,
906 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
909 /* dsi->irq_lock has to be locked by the caller */
910 static void _omap_dsi_set_irqs_cio(struct dsi_data *dsi)
912 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_cio,
913 ARRAY_SIZE(dsi->isr_tables.isr_table_cio),
914 DSI_CIO_IRQ_ERROR_MASK,
915 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
918 static void _dsi_initialize_irq(struct dsi_data *dsi)
923 spin_lock_irqsave(&dsi->irq_lock, flags);
925 memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables));
927 _omap_dsi_set_irqs(dsi);
928 for (vc = 0; vc < 4; ++vc)
929 _omap_dsi_set_irqs_vc(dsi, vc);
930 _omap_dsi_set_irqs_cio(dsi);
932 spin_unlock_irqrestore(&dsi->irq_lock, flags);
935 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
936 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
938 struct dsi_isr_data *isr_data;
944 /* check for duplicate entry and find a free slot */
946 for (i = 0; i < isr_array_size; i++) {
947 isr_data = &isr_array[i];
949 if (isr_data->isr == isr && isr_data->arg == arg &&
950 isr_data->mask == mask) {
954 if (isr_data->isr == NULL && free_idx == -1)
961 isr_data = &isr_array[free_idx];
964 isr_data->mask = mask;
969 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
970 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
972 struct dsi_isr_data *isr_data;
975 for (i = 0; i < isr_array_size; i++) {
976 isr_data = &isr_array[i];
977 if (isr_data->isr != isr || isr_data->arg != arg ||
978 isr_data->mask != mask)
981 isr_data->isr = NULL;
982 isr_data->arg = NULL;
991 static int dsi_register_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
997 spin_lock_irqsave(&dsi->irq_lock, flags);
999 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1000 ARRAY_SIZE(dsi->isr_tables.isr_table));
1003 _omap_dsi_set_irqs(dsi);
1005 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1010 static int dsi_unregister_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
1011 void *arg, u32 mask)
1013 unsigned long flags;
1016 spin_lock_irqsave(&dsi->irq_lock, flags);
1018 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1019 ARRAY_SIZE(dsi->isr_tables.isr_table));
1022 _omap_dsi_set_irqs(dsi);
1024 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1029 static int dsi_register_isr_vc(struct dsi_data *dsi, int channel,
1030 omap_dsi_isr_t isr, void *arg, u32 mask)
1032 unsigned long flags;
1035 spin_lock_irqsave(&dsi->irq_lock, flags);
1037 r = _dsi_register_isr(isr, arg, mask,
1038 dsi->isr_tables.isr_table_vc[channel],
1039 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1042 _omap_dsi_set_irqs_vc(dsi, channel);
1044 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1049 static int dsi_unregister_isr_vc(struct dsi_data *dsi, int channel,
1050 omap_dsi_isr_t isr, void *arg, u32 mask)
1052 unsigned long flags;
1055 spin_lock_irqsave(&dsi->irq_lock, flags);
1057 r = _dsi_unregister_isr(isr, arg, mask,
1058 dsi->isr_tables.isr_table_vc[channel],
1059 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1062 _omap_dsi_set_irqs_vc(dsi, channel);
1064 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1069 static int dsi_register_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1070 void *arg, u32 mask)
1072 unsigned long flags;
1075 spin_lock_irqsave(&dsi->irq_lock, flags);
1077 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1078 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1081 _omap_dsi_set_irqs_cio(dsi);
1083 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1088 static int dsi_unregister_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1089 void *arg, u32 mask)
1091 unsigned long flags;
1094 spin_lock_irqsave(&dsi->irq_lock, flags);
1096 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1097 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1100 _omap_dsi_set_irqs_cio(dsi);
1102 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1107 static u32 dsi_get_errors(struct dsi_data *dsi)
1109 unsigned long flags;
1112 spin_lock_irqsave(&dsi->errors_lock, flags);
1115 spin_unlock_irqrestore(&dsi->errors_lock, flags);
1119 static int dsi_runtime_get(struct dsi_data *dsi)
1123 DSSDBG("dsi_runtime_get\n");
1125 r = pm_runtime_get_sync(dsi->dev);
1127 return r < 0 ? r : 0;
1130 static void dsi_runtime_put(struct dsi_data *dsi)
1134 DSSDBG("dsi_runtime_put\n");
1136 r = pm_runtime_put_sync(dsi->dev);
1137 WARN_ON(r < 0 && r != -ENOSYS);
1140 static void _dsi_print_reset_status(struct dsi_data *dsi)
1145 /* A dummy read using the SCP interface to any DSIPHY register is
1146 * required after DSIPHY reset to complete the reset of the DSI complex
1148 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1150 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC) {
1160 #define DSI_FLD_GET(fld, start, end)\
1161 FLD_GET(dsi_read_reg(dsi, DSI_##fld), start, end)
1163 pr_debug("DSI resets: PLL (%d) CIO (%d) PHY (%x%x%x, %d, %d, %d)\n",
1164 DSI_FLD_GET(PLL_STATUS, 0, 0),
1165 DSI_FLD_GET(COMPLEXIO_CFG1, 29, 29),
1166 DSI_FLD_GET(DSIPHY_CFG5, b0, b0),
1167 DSI_FLD_GET(DSIPHY_CFG5, b1, b1),
1168 DSI_FLD_GET(DSIPHY_CFG5, b2, b2),
1169 DSI_FLD_GET(DSIPHY_CFG5, 29, 29),
1170 DSI_FLD_GET(DSIPHY_CFG5, 30, 30),
1171 DSI_FLD_GET(DSIPHY_CFG5, 31, 31));
1176 static inline int dsi_if_enable(struct dsi_data *dsi, bool enable)
1178 DSSDBG("dsi_if_enable(%d)\n", enable);
1180 enable = enable ? 1 : 0;
1181 REG_FLD_MOD(dsi, DSI_CTRL, enable, 0, 0); /* IF_EN */
1183 if (!wait_for_bit_change(dsi, DSI_CTRL, 0, enable)) {
1184 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1191 static unsigned long dsi_get_pll_hsdiv_dispc_rate(struct dsi_data *dsi)
1193 return dsi->pll.cinfo.clkout[HSDIV_DISPC];
1196 static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct dsi_data *dsi)
1198 return dsi->pll.cinfo.clkout[HSDIV_DSI];
1201 static unsigned long dsi_get_txbyteclkhs(struct dsi_data *dsi)
1203 return dsi->pll.cinfo.clkdco / 16;
1206 static unsigned long dsi_fclk_rate(struct dsi_data *dsi)
1209 enum dss_clk_source source;
1211 source = dss_get_dsi_clk_source(dsi->dss, dsi->module_id);
1212 if (source == DSS_CLK_SRC_FCK) {
1213 /* DSI FCLK source is DSS_CLK_FCK */
1214 r = clk_get_rate(dsi->dss_clk);
1216 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1217 r = dsi_get_pll_hsdiv_dsi_rate(dsi);
1223 static int dsi_lp_clock_calc(unsigned long dsi_fclk,
1224 unsigned long lp_clk_min, unsigned long lp_clk_max,
1225 struct dsi_lp_clock_info *lp_cinfo)
1227 unsigned int lp_clk_div;
1228 unsigned long lp_clk;
1230 lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk_max * 2);
1231 lp_clk = dsi_fclk / 2 / lp_clk_div;
1233 if (lp_clk < lp_clk_min || lp_clk > lp_clk_max)
1236 lp_cinfo->lp_clk_div = lp_clk_div;
1237 lp_cinfo->lp_clk = lp_clk;
1242 static int dsi_set_lp_clk_divisor(struct dsi_data *dsi)
1244 unsigned long dsi_fclk;
1245 unsigned int lp_clk_div;
1246 unsigned long lp_clk;
1247 unsigned int lpdiv_max = dsi->data->max_pll_lpdiv;
1250 lp_clk_div = dsi->user_lp_cinfo.lp_clk_div;
1252 if (lp_clk_div == 0 || lp_clk_div > lpdiv_max)
1255 dsi_fclk = dsi_fclk_rate(dsi);
1257 lp_clk = dsi_fclk / 2 / lp_clk_div;
1259 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1260 dsi->current_lp_cinfo.lp_clk = lp_clk;
1261 dsi->current_lp_cinfo.lp_clk_div = lp_clk_div;
1263 /* LP_CLK_DIVISOR */
1264 REG_FLD_MOD(dsi, DSI_CLK_CTRL, lp_clk_div, 12, 0);
1266 /* LP_RX_SYNCHRO_ENABLE */
1267 REG_FLD_MOD(dsi, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21);
1272 static void dsi_enable_scp_clk(struct dsi_data *dsi)
1274 if (dsi->scp_clk_refcount++ == 0)
1275 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
1278 static void dsi_disable_scp_clk(struct dsi_data *dsi)
1280 WARN_ON(dsi->scp_clk_refcount == 0);
1281 if (--dsi->scp_clk_refcount == 0)
1282 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
1285 enum dsi_pll_power_state {
1286 DSI_PLL_POWER_OFF = 0x0,
1287 DSI_PLL_POWER_ON_HSCLK = 0x1,
1288 DSI_PLL_POWER_ON_ALL = 0x2,
1289 DSI_PLL_POWER_ON_DIV = 0x3,
1292 static int dsi_pll_power(struct dsi_data *dsi, enum dsi_pll_power_state state)
1296 /* DSI-PLL power command 0x3 is not working */
1297 if ((dsi->data->quirks & DSI_QUIRK_PLL_PWR_BUG) &&
1298 state == DSI_PLL_POWER_ON_DIV)
1299 state = DSI_PLL_POWER_ON_ALL;
1302 REG_FLD_MOD(dsi, DSI_CLK_CTRL, state, 31, 30);
1304 /* PLL_PWR_STATUS */
1305 while (FLD_GET(dsi_read_reg(dsi, DSI_CLK_CTRL), 29, 28) != state) {
1307 DSSERR("Failed to set DSI PLL power mode to %d\n",
1318 static void dsi_pll_calc_dsi_fck(struct dsi_data *dsi,
1319 struct dss_pll_clock_info *cinfo)
1321 unsigned long max_dsi_fck;
1323 max_dsi_fck = dsi->data->max_fck_freq;
1325 cinfo->mX[HSDIV_DSI] = DIV_ROUND_UP(cinfo->clkdco, max_dsi_fck);
1326 cinfo->clkout[HSDIV_DSI] = cinfo->clkdco / cinfo->mX[HSDIV_DSI];
1329 static int dsi_pll_enable(struct dss_pll *pll)
1331 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1334 DSSDBG("PLL init\n");
1336 r = dsi_runtime_get(dsi);
1341 * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
1343 dsi_enable_scp_clk(dsi);
1345 if (!dsi->vdds_dsi_enabled) {
1346 r = regulator_enable(dsi->vdds_dsi_reg);
1349 dsi->vdds_dsi_enabled = true;
1352 /* XXX PLL does not come out of reset without this... */
1353 dispc_pck_free_enable(dsi->dss->dispc, 1);
1355 if (!wait_for_bit_change(dsi, DSI_PLL_STATUS, 0, 1)) {
1356 DSSERR("PLL not coming out of reset.\n");
1358 dispc_pck_free_enable(dsi->dss->dispc, 0);
1362 /* XXX ... but if left on, we get problems when planes do not
1363 * fill the whole display. No idea about this */
1364 dispc_pck_free_enable(dsi->dss->dispc, 0);
1366 r = dsi_pll_power(dsi, DSI_PLL_POWER_ON_ALL);
1371 DSSDBG("PLL init done\n");
1375 if (dsi->vdds_dsi_enabled) {
1376 regulator_disable(dsi->vdds_dsi_reg);
1377 dsi->vdds_dsi_enabled = false;
1380 dsi_disable_scp_clk(dsi);
1381 dsi_runtime_put(dsi);
1385 static void dsi_pll_uninit(struct dsi_data *dsi, bool disconnect_lanes)
1387 dsi_pll_power(dsi, DSI_PLL_POWER_OFF);
1388 if (disconnect_lanes) {
1389 WARN_ON(!dsi->vdds_dsi_enabled);
1390 regulator_disable(dsi->vdds_dsi_reg);
1391 dsi->vdds_dsi_enabled = false;
1394 dsi_disable_scp_clk(dsi);
1395 dsi_runtime_put(dsi);
1397 DSSDBG("PLL uninit done\n");
1400 static void dsi_pll_disable(struct dss_pll *pll)
1402 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1404 dsi_pll_uninit(dsi, true);
1407 static int dsi_dump_dsi_clocks(struct seq_file *s, void *p)
1409 struct dsi_data *dsi = p;
1410 struct dss_pll_clock_info *cinfo = &dsi->pll.cinfo;
1411 enum dss_clk_source dispc_clk_src, dsi_clk_src;
1412 int dsi_module = dsi->module_id;
1413 struct dss_pll *pll = &dsi->pll;
1415 dispc_clk_src = dss_get_dispc_clk_source(dsi->dss);
1416 dsi_clk_src = dss_get_dsi_clk_source(dsi->dss, dsi_module);
1418 if (dsi_runtime_get(dsi))
1421 seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1);
1423 seq_printf(s, "dsi pll clkin\t%lu\n", clk_get_rate(pll->clkin));
1425 seq_printf(s, "Fint\t\t%-16lun %u\n", cinfo->fint, cinfo->n);
1427 seq_printf(s, "CLKIN4DDR\t%-16lum %u\n",
1428 cinfo->clkdco, cinfo->m);
1430 seq_printf(s, "DSI_PLL_HSDIV_DISPC (%s)\t%-16lum_dispc %u\t(%s)\n",
1431 dss_get_clk_source_name(dsi_module == 0 ?
1432 DSS_CLK_SRC_PLL1_1 :
1433 DSS_CLK_SRC_PLL2_1),
1434 cinfo->clkout[HSDIV_DISPC],
1435 cinfo->mX[HSDIV_DISPC],
1436 dispc_clk_src == DSS_CLK_SRC_FCK ?
1439 seq_printf(s, "DSI_PLL_HSDIV_DSI (%s)\t%-16lum_dsi %u\t(%s)\n",
1440 dss_get_clk_source_name(dsi_module == 0 ?
1441 DSS_CLK_SRC_PLL1_2 :
1442 DSS_CLK_SRC_PLL2_2),
1443 cinfo->clkout[HSDIV_DSI],
1444 cinfo->mX[HSDIV_DSI],
1445 dsi_clk_src == DSS_CLK_SRC_FCK ?
1448 seq_printf(s, "- DSI%d -\n", dsi_module + 1);
1450 seq_printf(s, "dsi fclk source = %s\n",
1451 dss_get_clk_source_name(dsi_clk_src));
1453 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsi));
1455 seq_printf(s, "DDR_CLK\t\t%lu\n",
1458 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsi));
1460 seq_printf(s, "LP_CLK\t\t%lu\n", dsi->current_lp_cinfo.lp_clk);
1462 dsi_runtime_put(dsi);
1467 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1468 static int dsi_dump_dsi_irqs(struct seq_file *s, void *p)
1470 struct dsi_data *dsi = p;
1471 unsigned long flags;
1472 struct dsi_irq_stats stats;
1474 spin_lock_irqsave(&dsi->irq_stats_lock, flags);
1476 stats = dsi->irq_stats;
1477 memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats));
1478 dsi->irq_stats.last_reset = jiffies;
1480 spin_unlock_irqrestore(&dsi->irq_stats_lock, flags);
1482 seq_printf(s, "period %u ms\n",
1483 jiffies_to_msecs(jiffies - stats.last_reset));
1485 seq_printf(s, "irqs %d\n", stats.irq_count);
1487 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1489 seq_printf(s, "-- DSI%d interrupts --\n", dsi->module_id + 1);
1505 PIS(LDO_POWER_GOOD);
1510 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1511 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1512 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1513 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1514 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1516 seq_printf(s, "-- VC interrupts --\n");
1525 PIS(PP_BUSY_CHANGE);
1529 seq_printf(s, "%-20s %10d\n", #x, \
1530 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1532 seq_printf(s, "-- CIO interrupts --\n");
1545 PIS(ERRCONTENTIONLP0_1);
1546 PIS(ERRCONTENTIONLP1_1);
1547 PIS(ERRCONTENTIONLP0_2);
1548 PIS(ERRCONTENTIONLP1_2);
1549 PIS(ERRCONTENTIONLP0_3);
1550 PIS(ERRCONTENTIONLP1_3);
1551 PIS(ULPSACTIVENOT_ALL0);
1552 PIS(ULPSACTIVENOT_ALL1);
1559 static int dsi_dump_dsi_regs(struct seq_file *s, void *p)
1561 struct dsi_data *dsi = p;
1563 if (dsi_runtime_get(dsi))
1565 dsi_enable_scp_clk(dsi);
1567 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsi, r))
1568 DUMPREG(DSI_REVISION);
1569 DUMPREG(DSI_SYSCONFIG);
1570 DUMPREG(DSI_SYSSTATUS);
1571 DUMPREG(DSI_IRQSTATUS);
1572 DUMPREG(DSI_IRQENABLE);
1574 DUMPREG(DSI_COMPLEXIO_CFG1);
1575 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1576 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1577 DUMPREG(DSI_CLK_CTRL);
1578 DUMPREG(DSI_TIMING1);
1579 DUMPREG(DSI_TIMING2);
1580 DUMPREG(DSI_VM_TIMING1);
1581 DUMPREG(DSI_VM_TIMING2);
1582 DUMPREG(DSI_VM_TIMING3);
1583 DUMPREG(DSI_CLK_TIMING);
1584 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1585 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1586 DUMPREG(DSI_COMPLEXIO_CFG2);
1587 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1588 DUMPREG(DSI_VM_TIMING4);
1589 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1590 DUMPREG(DSI_VM_TIMING5);
1591 DUMPREG(DSI_VM_TIMING6);
1592 DUMPREG(DSI_VM_TIMING7);
1593 DUMPREG(DSI_STOPCLK_TIMING);
1595 DUMPREG(DSI_VC_CTRL(0));
1596 DUMPREG(DSI_VC_TE(0));
1597 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1598 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1599 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1600 DUMPREG(DSI_VC_IRQSTATUS(0));
1601 DUMPREG(DSI_VC_IRQENABLE(0));
1603 DUMPREG(DSI_VC_CTRL(1));
1604 DUMPREG(DSI_VC_TE(1));
1605 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1606 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1607 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1608 DUMPREG(DSI_VC_IRQSTATUS(1));
1609 DUMPREG(DSI_VC_IRQENABLE(1));
1611 DUMPREG(DSI_VC_CTRL(2));
1612 DUMPREG(DSI_VC_TE(2));
1613 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1614 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1615 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1616 DUMPREG(DSI_VC_IRQSTATUS(2));
1617 DUMPREG(DSI_VC_IRQENABLE(2));
1619 DUMPREG(DSI_VC_CTRL(3));
1620 DUMPREG(DSI_VC_TE(3));
1621 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1622 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1623 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1624 DUMPREG(DSI_VC_IRQSTATUS(3));
1625 DUMPREG(DSI_VC_IRQENABLE(3));
1627 DUMPREG(DSI_DSIPHY_CFG0);
1628 DUMPREG(DSI_DSIPHY_CFG1);
1629 DUMPREG(DSI_DSIPHY_CFG2);
1630 DUMPREG(DSI_DSIPHY_CFG5);
1632 DUMPREG(DSI_PLL_CONTROL);
1633 DUMPREG(DSI_PLL_STATUS);
1634 DUMPREG(DSI_PLL_GO);
1635 DUMPREG(DSI_PLL_CONFIGURATION1);
1636 DUMPREG(DSI_PLL_CONFIGURATION2);
1639 dsi_disable_scp_clk(dsi);
1640 dsi_runtime_put(dsi);
1645 enum dsi_cio_power_state {
1646 DSI_COMPLEXIO_POWER_OFF = 0x0,
1647 DSI_COMPLEXIO_POWER_ON = 0x1,
1648 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1651 static int dsi_cio_power(struct dsi_data *dsi, enum dsi_cio_power_state state)
1656 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG1, state, 28, 27);
1659 while (FLD_GET(dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1),
1662 DSSERR("failed to set complexio power state to "
1672 static unsigned int dsi_get_line_buf_size(struct dsi_data *dsi)
1676 /* line buffer on OMAP3 is 1024 x 24bits */
1677 /* XXX: for some reason using full buffer size causes
1678 * considerable TX slowdown with update sizes that fill the
1680 if (!(dsi->data->quirks & DSI_QUIRK_GNQ))
1683 val = REG_GET(dsi, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */
1687 return 512 * 3; /* 512x24 bits */
1689 return 682 * 3; /* 682x24 bits */
1691 return 853 * 3; /* 853x24 bits */
1693 return 1024 * 3; /* 1024x24 bits */
1695 return 1194 * 3; /* 1194x24 bits */
1697 return 1365 * 3; /* 1365x24 bits */
1699 return 1920 * 3; /* 1920x24 bits */
1706 static int dsi_set_lane_config(struct dsi_data *dsi)
1708 static const u8 offsets[] = { 0, 4, 8, 12, 16 };
1709 static const enum dsi_lane_function functions[] = {
1719 r = dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1);
1721 for (i = 0; i < dsi->num_lanes_used; ++i) {
1722 unsigned int offset = offsets[i];
1723 unsigned int polarity, lane_number;
1726 for (t = 0; t < dsi->num_lanes_supported; ++t)
1727 if (dsi->lanes[t].function == functions[i])
1730 if (t == dsi->num_lanes_supported)
1734 polarity = dsi->lanes[t].polarity;
1736 r = FLD_MOD(r, lane_number + 1, offset + 2, offset);
1737 r = FLD_MOD(r, polarity, offset + 3, offset + 3);
1740 /* clear the unused lanes */
1741 for (; i < dsi->num_lanes_supported; ++i) {
1742 unsigned int offset = offsets[i];
1744 r = FLD_MOD(r, 0, offset + 2, offset);
1745 r = FLD_MOD(r, 0, offset + 3, offset + 3);
1748 dsi_write_reg(dsi, DSI_COMPLEXIO_CFG1, r);
1753 static inline unsigned int ns2ddr(struct dsi_data *dsi, unsigned int ns)
1755 /* convert time in ns to ddr ticks, rounding up */
1756 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1758 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1761 static inline unsigned int ddr2ns(struct dsi_data *dsi, unsigned int ddr)
1763 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1765 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1768 static void dsi_cio_timings(struct dsi_data *dsi)
1771 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1772 u32 tlpx_half, tclk_trail, tclk_zero;
1775 /* calculate timings */
1777 /* 1 * DDR_CLK = 2 * UI */
1779 /* min 40ns + 4*UI max 85ns + 6*UI */
1780 ths_prepare = ns2ddr(dsi, 70) + 2;
1782 /* min 145ns + 10*UI */
1783 ths_prepare_ths_zero = ns2ddr(dsi, 175) + 2;
1785 /* min max(8*UI, 60ns+4*UI) */
1786 ths_trail = ns2ddr(dsi, 60) + 5;
1789 ths_exit = ns2ddr(dsi, 145);
1792 tlpx_half = ns2ddr(dsi, 25);
1795 tclk_trail = ns2ddr(dsi, 60) + 2;
1797 /* min 38ns, max 95ns */
1798 tclk_prepare = ns2ddr(dsi, 65);
1800 /* min tclk-prepare + tclk-zero = 300ns */
1801 tclk_zero = ns2ddr(dsi, 260);
1803 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1804 ths_prepare, ddr2ns(dsi, ths_prepare),
1805 ths_prepare_ths_zero, ddr2ns(dsi, ths_prepare_ths_zero));
1806 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1807 ths_trail, ddr2ns(dsi, ths_trail),
1808 ths_exit, ddr2ns(dsi, ths_exit));
1810 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1811 "tclk_zero %u (%uns)\n",
1812 tlpx_half, ddr2ns(dsi, tlpx_half),
1813 tclk_trail, ddr2ns(dsi, tclk_trail),
1814 tclk_zero, ddr2ns(dsi, tclk_zero));
1815 DSSDBG("tclk_prepare %u (%uns)\n",
1816 tclk_prepare, ddr2ns(dsi, tclk_prepare));
1818 /* program timings */
1820 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
1821 r = FLD_MOD(r, ths_prepare, 31, 24);
1822 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1823 r = FLD_MOD(r, ths_trail, 15, 8);
1824 r = FLD_MOD(r, ths_exit, 7, 0);
1825 dsi_write_reg(dsi, DSI_DSIPHY_CFG0, r);
1827 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
1828 r = FLD_MOD(r, tlpx_half, 20, 16);
1829 r = FLD_MOD(r, tclk_trail, 15, 8);
1830 r = FLD_MOD(r, tclk_zero, 7, 0);
1832 if (dsi->data->quirks & DSI_QUIRK_PHY_DCC) {
1833 r = FLD_MOD(r, 0, 21, 21); /* DCCEN = disable */
1834 r = FLD_MOD(r, 1, 22, 22); /* CLKINP_DIVBY2EN = enable */
1835 r = FLD_MOD(r, 1, 23, 23); /* CLKINP_SEL = enable */
1838 dsi_write_reg(dsi, DSI_DSIPHY_CFG1, r);
1840 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
1841 r = FLD_MOD(r, tclk_prepare, 7, 0);
1842 dsi_write_reg(dsi, DSI_DSIPHY_CFG2, r);
1845 /* lane masks have lane 0 at lsb. mask_p for positive lines, n for negative */
1846 static void dsi_cio_enable_lane_override(struct dsi_data *dsi,
1847 unsigned int mask_p,
1848 unsigned int mask_n)
1852 u8 lptxscp_start = dsi->num_lanes_supported == 3 ? 22 : 26;
1856 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1857 unsigned int p = dsi->lanes[i].polarity;
1859 if (mask_p & (1 << i))
1860 l |= 1 << (i * 2 + (p ? 0 : 1));
1862 if (mask_n & (1 << i))
1863 l |= 1 << (i * 2 + (p ? 1 : 0));
1867 * Bits in REGLPTXSCPDAT4TO0DXDY:
1875 /* Set the lane override configuration */
1877 /* REGLPTXSCPDAT4TO0DXDY */
1878 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, l, lptxscp_start, 17);
1880 /* Enable lane override */
1883 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 1, 27, 27);
1886 static void dsi_cio_disable_lane_override(struct dsi_data *dsi)
1888 /* Disable lane override */
1889 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
1890 /* Reset the lane override configuration */
1891 /* REGLPTXSCPDAT4TO0DXDY */
1892 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 22, 17);
1895 static int dsi_cio_wait_tx_clk_esc_reset(struct dsi_data *dsi)
1898 bool in_use[DSI_MAX_NR_LANES];
1899 static const u8 offsets_old[] = { 28, 27, 26 };
1900 static const u8 offsets_new[] = { 24, 25, 26, 27, 28 };
1903 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC)
1904 offsets = offsets_old;
1906 offsets = offsets_new;
1908 for (i = 0; i < dsi->num_lanes_supported; ++i)
1909 in_use[i] = dsi->lanes[i].function != DSI_LANE_UNUSED;
1916 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1919 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1920 if (!in_use[i] || (l & (1 << offsets[i])))
1924 if (ok == dsi->num_lanes_supported)
1928 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1929 if (!in_use[i] || (l & (1 << offsets[i])))
1932 DSSERR("CIO TXCLKESC%d domain not coming " \
1933 "out of reset\n", i);
1942 /* return bitmask of enabled lanes, lane0 being the lsb */
1943 static unsigned int dsi_get_lane_mask(struct dsi_data *dsi)
1945 unsigned int mask = 0;
1948 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1949 if (dsi->lanes[i].function != DSI_LANE_UNUSED)
1956 /* OMAP4 CONTROL_DSIPHY */
1957 #define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
1959 #define OMAP4_DSI2_LANEENABLE_SHIFT 29
1960 #define OMAP4_DSI2_LANEENABLE_MASK (0x7 << 29)
1961 #define OMAP4_DSI1_LANEENABLE_SHIFT 24
1962 #define OMAP4_DSI1_LANEENABLE_MASK (0x1f << 24)
1963 #define OMAP4_DSI1_PIPD_SHIFT 19
1964 #define OMAP4_DSI1_PIPD_MASK (0x1f << 19)
1965 #define OMAP4_DSI2_PIPD_SHIFT 14
1966 #define OMAP4_DSI2_PIPD_MASK (0x1f << 14)
1968 static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes)
1970 u32 enable_mask, enable_shift;
1971 u32 pipd_mask, pipd_shift;
1973 if (dsi->module_id == 0) {
1974 enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
1975 enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT;
1976 pipd_mask = OMAP4_DSI1_PIPD_MASK;
1977 pipd_shift = OMAP4_DSI1_PIPD_SHIFT;
1978 } else if (dsi->module_id == 1) {
1979 enable_mask = OMAP4_DSI2_LANEENABLE_MASK;
1980 enable_shift = OMAP4_DSI2_LANEENABLE_SHIFT;
1981 pipd_mask = OMAP4_DSI2_PIPD_MASK;
1982 pipd_shift = OMAP4_DSI2_PIPD_SHIFT;
1987 return regmap_update_bits(dsi->syscon, OMAP4_DSIPHY_SYSCON_OFFSET,
1988 enable_mask | pipd_mask,
1989 (lanes << enable_shift) | (lanes << pipd_shift));
1992 /* OMAP5 CONTROL_DSIPHY */
1994 #define OMAP5_DSIPHY_SYSCON_OFFSET 0x74
1996 #define OMAP5_DSI1_LANEENABLE_SHIFT 24
1997 #define OMAP5_DSI2_LANEENABLE_SHIFT 19
1998 #define OMAP5_DSI_LANEENABLE_MASK 0x1f
2000 static int dsi_omap5_mux_pads(struct dsi_data *dsi, unsigned int lanes)
2004 if (dsi->module_id == 0)
2005 enable_shift = OMAP5_DSI1_LANEENABLE_SHIFT;
2006 else if (dsi->module_id == 1)
2007 enable_shift = OMAP5_DSI2_LANEENABLE_SHIFT;
2011 return regmap_update_bits(dsi->syscon, OMAP5_DSIPHY_SYSCON_OFFSET,
2012 OMAP5_DSI_LANEENABLE_MASK << enable_shift,
2013 lanes << enable_shift);
2016 static int dsi_enable_pads(struct dsi_data *dsi, unsigned int lane_mask)
2018 if (dsi->data->model == DSI_MODEL_OMAP4)
2019 return dsi_omap4_mux_pads(dsi, lane_mask);
2020 if (dsi->data->model == DSI_MODEL_OMAP5)
2021 return dsi_omap5_mux_pads(dsi, lane_mask);
2025 static void dsi_disable_pads(struct dsi_data *dsi)
2027 if (dsi->data->model == DSI_MODEL_OMAP4)
2028 dsi_omap4_mux_pads(dsi, 0);
2029 else if (dsi->data->model == DSI_MODEL_OMAP5)
2030 dsi_omap5_mux_pads(dsi, 0);
2033 static int dsi_cio_init(struct dsi_data *dsi)
2038 DSSDBG("DSI CIO init starts");
2040 r = dsi_enable_pads(dsi, dsi_get_lane_mask(dsi));
2044 dsi_enable_scp_clk(dsi);
2046 /* A dummy read using the SCP interface to any DSIPHY register is
2047 * required after DSIPHY reset to complete the reset of the DSI complex
2049 dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
2051 if (!wait_for_bit_change(dsi, DSI_DSIPHY_CFG5, 30, 1)) {
2052 DSSERR("CIO SCP Clock domain not coming out of reset.\n");
2054 goto err_scp_clk_dom;
2057 r = dsi_set_lane_config(dsi);
2059 goto err_scp_clk_dom;
2061 /* set TX STOP MODE timer to maximum for this operation */
2062 l = dsi_read_reg(dsi, DSI_TIMING1);
2063 l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2064 l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
2065 l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
2066 l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
2067 dsi_write_reg(dsi, DSI_TIMING1, l);
2069 if (dsi->ulps_enabled) {
2070 unsigned int mask_p;
2073 DSSDBG("manual ulps exit\n");
2075 /* ULPS is exited by Mark-1 state for 1ms, followed by
2076 * stop state. DSS HW cannot do this via the normal
2077 * ULPS exit sequence, as after reset the DSS HW thinks
2078 * that we are not in ULPS mode, and refuses to send the
2079 * sequence. So we need to send the ULPS exit sequence
2080 * manually by setting positive lines high and negative lines
2086 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2087 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
2092 dsi_cio_enable_lane_override(dsi, mask_p, 0);
2095 r = dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ON);
2099 if (!wait_for_bit_change(dsi, DSI_COMPLEXIO_CFG1, 29, 1)) {
2100 DSSERR("CIO PWR clock domain not coming out of reset.\n");
2102 goto err_cio_pwr_dom;
2105 dsi_if_enable(dsi, true);
2106 dsi_if_enable(dsi, false);
2107 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
2109 r = dsi_cio_wait_tx_clk_esc_reset(dsi);
2111 goto err_tx_clk_esc_rst;
2113 if (dsi->ulps_enabled) {
2114 /* Keep Mark-1 state for 1ms (as per DSI spec) */
2115 ktime_t wait = ns_to_ktime(1000 * 1000);
2116 set_current_state(TASK_UNINTERRUPTIBLE);
2117 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
2119 /* Disable the override. The lanes should be set to Mark-11
2120 * state by the HW */
2121 dsi_cio_disable_lane_override(dsi);
2124 /* FORCE_TX_STOP_MODE_IO */
2125 REG_FLD_MOD(dsi, DSI_TIMING1, 0, 15, 15);
2127 dsi_cio_timings(dsi);
2129 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
2130 /* DDR_CLK_ALWAYS_ON */
2131 REG_FLD_MOD(dsi, DSI_CLK_CTRL,
2132 dsi->vm_timings.ddr_clk_always_on, 13, 13);
2135 dsi->ulps_enabled = false;
2137 DSSDBG("CIO init done\n");
2142 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
2144 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2146 if (dsi->ulps_enabled)
2147 dsi_cio_disable_lane_override(dsi);
2149 dsi_disable_scp_clk(dsi);
2150 dsi_disable_pads(dsi);
2154 static void dsi_cio_uninit(struct dsi_data *dsi)
2156 /* DDR_CLK_ALWAYS_ON */
2157 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
2159 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2160 dsi_disable_scp_clk(dsi);
2161 dsi_disable_pads(dsi);
2164 static void dsi_config_tx_fifo(struct dsi_data *dsi,
2165 enum fifo_size size1, enum fifo_size size2,
2166 enum fifo_size size3, enum fifo_size size4)
2172 dsi->vc[0].tx_fifo_size = size1;
2173 dsi->vc[1].tx_fifo_size = size2;
2174 dsi->vc[2].tx_fifo_size = size3;
2175 dsi->vc[3].tx_fifo_size = size4;
2177 for (i = 0; i < 4; i++) {
2179 int size = dsi->vc[i].tx_fifo_size;
2181 if (add + size > 4) {
2182 DSSERR("Illegal FIFO configuration\n");
2187 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2189 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2193 dsi_write_reg(dsi, DSI_TX_FIFO_VC_SIZE, r);
2196 static void dsi_config_rx_fifo(struct dsi_data *dsi,
2197 enum fifo_size size1, enum fifo_size size2,
2198 enum fifo_size size3, enum fifo_size size4)
2204 dsi->vc[0].rx_fifo_size = size1;
2205 dsi->vc[1].rx_fifo_size = size2;
2206 dsi->vc[2].rx_fifo_size = size3;
2207 dsi->vc[3].rx_fifo_size = size4;
2209 for (i = 0; i < 4; i++) {
2211 int size = dsi->vc[i].rx_fifo_size;
2213 if (add + size > 4) {
2214 DSSERR("Illegal FIFO configuration\n");
2219 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2221 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2225 dsi_write_reg(dsi, DSI_RX_FIFO_VC_SIZE, r);
2228 static int dsi_force_tx_stop_mode_io(struct dsi_data *dsi)
2232 r = dsi_read_reg(dsi, DSI_TIMING1);
2233 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2234 dsi_write_reg(dsi, DSI_TIMING1, r);
2236 if (!wait_for_bit_change(dsi, DSI_TIMING1, 15, 0)) {
2237 DSSERR("TX_STOP bit not going down\n");
2244 static bool dsi_vc_is_enabled(struct dsi_data *dsi, int channel)
2246 return REG_GET(dsi, DSI_VC_CTRL(channel), 0, 0);
2249 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2251 struct dsi_packet_sent_handler_data *vp_data =
2252 (struct dsi_packet_sent_handler_data *) data;
2253 struct dsi_data *dsi = vp_data->dsi;
2254 const int channel = dsi->update_channel;
2255 u8 bit = dsi->te_enabled ? 30 : 31;
2257 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit) == 0)
2258 complete(vp_data->completion);
2261 static int dsi_sync_vc_vp(struct dsi_data *dsi, int channel)
2263 DECLARE_COMPLETION_ONSTACK(completion);
2264 struct dsi_packet_sent_handler_data vp_data = {
2266 .completion = &completion
2271 bit = dsi->te_enabled ? 30 : 31;
2273 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2274 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2278 /* Wait for completion only if TE_EN/TE_START is still set */
2279 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit)) {
2280 if (wait_for_completion_timeout(&completion,
2281 msecs_to_jiffies(10)) == 0) {
2282 DSSERR("Failed to complete previous frame transfer\n");
2288 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2289 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2293 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2294 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2299 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2301 struct dsi_packet_sent_handler_data *l4_data =
2302 (struct dsi_packet_sent_handler_data *) data;
2303 struct dsi_data *dsi = l4_data->dsi;
2304 const int channel = dsi->update_channel;
2306 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5) == 0)
2307 complete(l4_data->completion);
2310 static int dsi_sync_vc_l4(struct dsi_data *dsi, int channel)
2312 DECLARE_COMPLETION_ONSTACK(completion);
2313 struct dsi_packet_sent_handler_data l4_data = {
2315 .completion = &completion
2319 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2320 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2324 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2325 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5)) {
2326 if (wait_for_completion_timeout(&completion,
2327 msecs_to_jiffies(10)) == 0) {
2328 DSSERR("Failed to complete previous l4 transfer\n");
2334 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2335 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2339 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2340 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2345 static int dsi_sync_vc(struct dsi_data *dsi, int channel)
2347 WARN_ON(!dsi_bus_is_locked(dsi));
2349 WARN_ON(in_interrupt());
2351 if (!dsi_vc_is_enabled(dsi, channel))
2354 switch (dsi->vc[channel].source) {
2355 case DSI_VC_SOURCE_VP:
2356 return dsi_sync_vc_vp(dsi, channel);
2357 case DSI_VC_SOURCE_L4:
2358 return dsi_sync_vc_l4(dsi, channel);
2365 static int dsi_vc_enable(struct dsi_data *dsi, int channel, bool enable)
2367 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2370 enable = enable ? 1 : 0;
2372 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 0, 0);
2374 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 0, enable)) {
2375 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2382 static void dsi_vc_initial_config(struct dsi_data *dsi, int channel)
2386 DSSDBG("Initial config of virtual channel %d", channel);
2388 r = dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2390 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2391 DSSERR("VC(%d) busy when trying to configure it!\n",
2394 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2395 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2396 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2397 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2398 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2399 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2400 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2401 if (dsi->data->quirks & DSI_QUIRK_VC_OCP_WIDTH)
2402 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2404 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2405 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2407 dsi_write_reg(dsi, DSI_VC_CTRL(channel), r);
2409 dsi->vc[channel].source = DSI_VC_SOURCE_L4;
2412 static int dsi_vc_config_source(struct dsi_data *dsi, int channel,
2413 enum dsi_vc_source source)
2415 if (dsi->vc[channel].source == source)
2418 DSSDBG("Source config of virtual channel %d", channel);
2420 dsi_sync_vc(dsi, channel);
2422 dsi_vc_enable(dsi, channel, 0);
2425 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 15, 0)) {
2426 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2430 /* SOURCE, 0 = L4, 1 = video port */
2431 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), source, 1, 1);
2433 /* DCS_CMD_ENABLE */
2434 if (dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC) {
2435 bool enable = source == DSI_VC_SOURCE_VP;
2436 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 30, 30);
2439 dsi_vc_enable(dsi, channel, 1);
2441 dsi->vc[channel].source = source;
2446 static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
2449 struct dsi_data *dsi = to_dsi_data(dssdev);
2451 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2453 WARN_ON(!dsi_bus_is_locked(dsi));
2455 dsi_vc_enable(dsi, channel, 0);
2456 dsi_if_enable(dsi, 0);
2458 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 9, 9);
2460 dsi_vc_enable(dsi, channel, 1);
2461 dsi_if_enable(dsi, 1);
2463 dsi_force_tx_stop_mode_io(dsi);
2465 /* start the DDR clock by sending a NULL packet */
2466 if (dsi->vm_timings.ddr_clk_always_on && enable)
2467 dsi_vc_send_null(dsi, channel);
2470 static void dsi_vc_flush_long_data(struct dsi_data *dsi, int channel)
2472 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2474 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2475 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2479 (val >> 24) & 0xff);
2483 static void dsi_show_rx_ack_with_err(u16 err)
2485 DSSERR("\tACK with ERROR (%#x):\n", err);
2487 DSSERR("\t\tSoT Error\n");
2489 DSSERR("\t\tSoT Sync Error\n");
2491 DSSERR("\t\tEoT Sync Error\n");
2493 DSSERR("\t\tEscape Mode Entry Command Error\n");
2495 DSSERR("\t\tLP Transmit Sync Error\n");
2497 DSSERR("\t\tHS Receive Timeout Error\n");
2499 DSSERR("\t\tFalse Control Error\n");
2501 DSSERR("\t\t(reserved7)\n");
2503 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2505 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2506 if (err & (1 << 10))
2507 DSSERR("\t\tChecksum Error\n");
2508 if (err & (1 << 11))
2509 DSSERR("\t\tData type not recognized\n");
2510 if (err & (1 << 12))
2511 DSSERR("\t\tInvalid VC ID\n");
2512 if (err & (1 << 13))
2513 DSSERR("\t\tInvalid Transmission Length\n");
2514 if (err & (1 << 14))
2515 DSSERR("\t\t(reserved14)\n");
2516 if (err & (1 << 15))
2517 DSSERR("\t\tDSI Protocol Violation\n");
2520 static u16 dsi_vc_flush_receive_data(struct dsi_data *dsi, int channel)
2522 /* RX_FIFO_NOT_EMPTY */
2523 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2526 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2527 DSSERR("\trawval %#08x\n", val);
2528 dt = FLD_GET(val, 5, 0);
2529 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2530 u16 err = FLD_GET(val, 23, 8);
2531 dsi_show_rx_ack_with_err(err);
2532 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) {
2533 DSSERR("\tDCS short response, 1 byte: %#x\n",
2534 FLD_GET(val, 23, 8));
2535 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) {
2536 DSSERR("\tDCS short response, 2 byte: %#x\n",
2537 FLD_GET(val, 23, 8));
2538 } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) {
2539 DSSERR("\tDCS long response, len %d\n",
2540 FLD_GET(val, 23, 8));
2541 dsi_vc_flush_long_data(dsi, channel);
2543 DSSERR("\tunknown datatype 0x%02x\n", dt);
2549 static int dsi_vc_send_bta(struct dsi_data *dsi, int channel)
2551 if (dsi->debug_write || dsi->debug_read)
2552 DSSDBG("dsi_vc_send_bta %d\n", channel);
2554 WARN_ON(!dsi_bus_is_locked(dsi));
2556 /* RX_FIFO_NOT_EMPTY */
2557 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2558 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2559 dsi_vc_flush_receive_data(dsi, channel);
2562 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2564 /* flush posted write */
2565 dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2570 static int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel)
2572 struct dsi_data *dsi = to_dsi_data(dssdev);
2573 DECLARE_COMPLETION_ONSTACK(completion);
2577 r = dsi_register_isr_vc(dsi, channel, dsi_completion_handler,
2578 &completion, DSI_VC_IRQ_BTA);
2582 r = dsi_register_isr(dsi, dsi_completion_handler, &completion,
2583 DSI_IRQ_ERROR_MASK);
2587 r = dsi_vc_send_bta(dsi, channel);
2591 if (wait_for_completion_timeout(&completion,
2592 msecs_to_jiffies(500)) == 0) {
2593 DSSERR("Failed to receive BTA\n");
2598 err = dsi_get_errors(dsi);
2600 DSSERR("Error while sending BTA: %x\n", err);
2605 dsi_unregister_isr(dsi, dsi_completion_handler, &completion,
2606 DSI_IRQ_ERROR_MASK);
2608 dsi_unregister_isr_vc(dsi, channel, dsi_completion_handler,
2609 &completion, DSI_VC_IRQ_BTA);
2614 static inline void dsi_vc_write_long_header(struct dsi_data *dsi, int channel,
2615 u8 data_type, u16 len, u8 ecc)
2620 WARN_ON(!dsi_bus_is_locked(dsi));
2622 data_id = data_type | dsi->vc[channel].vc_id << 6;
2624 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2625 FLD_VAL(ecc, 31, 24);
2627 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_HEADER(channel), val);
2630 static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int channel,
2631 u8 b1, u8 b2, u8 b3, u8 b4)
2635 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2637 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2638 b1, b2, b3, b4, val); */
2640 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2643 static int dsi_vc_send_long(struct dsi_data *dsi, int channel, u8 data_type,
2644 u8 *data, u16 len, u8 ecc)
2652 if (dsi->debug_write)
2653 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2656 if (dsi->vc[channel].tx_fifo_size * 32 * 4 < len + 4) {
2657 DSSERR("unable to send long packet: packet too long.\n");
2661 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2663 dsi_vc_write_long_header(dsi, channel, data_type, len, ecc);
2666 for (i = 0; i < len >> 2; i++) {
2667 if (dsi->debug_write)
2668 DSSDBG("\tsending full packet %d\n", i);
2675 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, b4);
2680 b1 = 0; b2 = 0; b3 = 0;
2682 if (dsi->debug_write)
2683 DSSDBG("\tsending remainder bytes %d\n", i);
2700 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, 0);
2706 static int dsi_vc_send_short(struct dsi_data *dsi, int channel, u8 data_type,
2712 WARN_ON(!dsi_bus_is_locked(dsi));
2714 if (dsi->debug_write)
2715 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2717 data_type, data & 0xff, (data >> 8) & 0xff);
2719 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2721 if (FLD_GET(dsi_read_reg(dsi, DSI_VC_CTRL(channel)), 16, 16)) {
2722 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2726 data_id = data_type | dsi->vc[channel].vc_id << 6;
2728 r = (data_id << 0) | (data << 8) | (ecc << 24);
2730 dsi_write_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel), r);
2735 static int dsi_vc_send_null(struct dsi_data *dsi, int channel)
2737 return dsi_vc_send_long(dsi, channel, MIPI_DSI_NULL_PACKET, NULL, 0, 0);
2740 static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel,
2742 enum dss_dsi_content_type type)
2747 BUG_ON(type == DSS_DSI_CONTENT_DCS);
2748 r = dsi_vc_send_short(dsi, channel,
2749 MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM, 0, 0);
2750 } else if (len == 1) {
2751 r = dsi_vc_send_short(dsi, channel,
2752 type == DSS_DSI_CONTENT_GENERIC ?
2753 MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM :
2754 MIPI_DSI_DCS_SHORT_WRITE, data[0], 0);
2755 } else if (len == 2) {
2756 r = dsi_vc_send_short(dsi, channel,
2757 type == DSS_DSI_CONTENT_GENERIC ?
2758 MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM :
2759 MIPI_DSI_DCS_SHORT_WRITE_PARAM,
2760 data[0] | (data[1] << 8), 0);
2762 r = dsi_vc_send_long(dsi, channel,
2763 type == DSS_DSI_CONTENT_GENERIC ?
2764 MIPI_DSI_GENERIC_LONG_WRITE :
2765 MIPI_DSI_DCS_LONG_WRITE, data, len, 0);
2771 static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
2774 struct dsi_data *dsi = to_dsi_data(dssdev);
2776 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2777 DSS_DSI_CONTENT_DCS);
2780 static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
2783 struct dsi_data *dsi = to_dsi_data(dssdev);
2785 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2786 DSS_DSI_CONTENT_GENERIC);
2789 static int dsi_vc_write_common(struct omap_dss_device *dssdev,
2790 int channel, u8 *data, int len,
2791 enum dss_dsi_content_type type)
2793 struct dsi_data *dsi = to_dsi_data(dssdev);
2796 r = dsi_vc_write_nosync_common(dsi, channel, data, len, type);
2800 r = dsi_vc_send_bta_sync(dssdev, channel);
2804 /* RX_FIFO_NOT_EMPTY */
2805 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2806 DSSERR("rx fifo not empty after write, dumping data:\n");
2807 dsi_vc_flush_receive_data(dsi, channel);
2814 DSSERR("dsi_vc_write_common(ch %d, cmd 0x%02x, len %d) failed\n",
2815 channel, data[0], len);
2819 static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2822 return dsi_vc_write_common(dssdev, channel, data, len,
2823 DSS_DSI_CONTENT_DCS);
2826 static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2829 return dsi_vc_write_common(dssdev, channel, data, len,
2830 DSS_DSI_CONTENT_GENERIC);
2833 static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel,
2838 if (dsi->debug_read)
2839 DSSDBG("dsi_vc_dcs_send_read_request(ch%d, dcs_cmd %x)\n",
2842 r = dsi_vc_send_short(dsi, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
2844 DSSERR("dsi_vc_dcs_send_read_request(ch %d, cmd 0x%02x)"
2845 " failed\n", channel, dcs_cmd);
2852 static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel,
2853 u8 *reqdata, int reqlen)
2859 if (dsi->debug_read)
2860 DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n",
2864 data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM;
2866 } else if (reqlen == 1) {
2867 data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM;
2869 } else if (reqlen == 2) {
2870 data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM;
2871 data = reqdata[0] | (reqdata[1] << 8);
2877 r = dsi_vc_send_short(dsi, channel, data_type, data, 0);
2879 DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)"
2880 " failed\n", channel, reqlen);
2887 static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int channel, u8 *buf,
2888 int buflen, enum dss_dsi_content_type type)
2894 /* RX_FIFO_NOT_EMPTY */
2895 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20) == 0) {
2896 DSSERR("RX fifo empty when trying to read.\n");
2901 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2902 if (dsi->debug_read)
2903 DSSDBG("\theader: %08x\n", val);
2904 dt = FLD_GET(val, 5, 0);
2905 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2906 u16 err = FLD_GET(val, 23, 8);
2907 dsi_show_rx_ack_with_err(err);
2911 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2912 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE :
2913 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE)) {
2914 u8 data = FLD_GET(val, 15, 8);
2915 if (dsi->debug_read)
2916 DSSDBG("\t%s short response, 1 byte: %02x\n",
2917 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2928 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2929 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE :
2930 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE)) {
2931 u16 data = FLD_GET(val, 23, 8);
2932 if (dsi->debug_read)
2933 DSSDBG("\t%s short response, 2 byte: %04x\n",
2934 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2942 buf[0] = data & 0xff;
2943 buf[1] = (data >> 8) & 0xff;
2946 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2947 MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE :
2948 MIPI_DSI_RX_DCS_LONG_READ_RESPONSE)) {
2950 int len = FLD_GET(val, 23, 8);
2951 if (dsi->debug_read)
2952 DSSDBG("\t%s long response, len %d\n",
2953 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2961 /* two byte checksum ends the packet, not included in len */
2962 for (w = 0; w < len + 2;) {
2964 val = dsi_read_reg(dsi,
2965 DSI_VC_SHORT_PACKET_HEADER(channel));
2966 if (dsi->debug_read)
2967 DSSDBG("\t\t%02x %02x %02x %02x\n",
2971 (val >> 24) & 0xff);
2973 for (b = 0; b < 4; ++b) {
2975 buf[w] = (val >> (b * 8)) & 0xff;
2976 /* we discard the 2 byte checksum */
2983 DSSERR("\tunknown datatype 0x%02x\n", dt);
2989 DSSERR("dsi_vc_read_rx_fifo(ch %d type %s) failed\n", channel,
2990 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : "DCS");
2995 static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
2996 u8 *buf, int buflen)
2998 struct dsi_data *dsi = to_dsi_data(dssdev);
3001 r = dsi_vc_dcs_send_read_request(dsi, channel, dcs_cmd);
3005 r = dsi_vc_send_bta_sync(dssdev, channel);
3009 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
3010 DSS_DSI_CONTENT_DCS);
3021 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", channel, dcs_cmd);
3025 static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
3026 u8 *reqdata, int reqlen, u8 *buf, int buflen)
3028 struct dsi_data *dsi = to_dsi_data(dssdev);
3031 r = dsi_vc_generic_send_read_request(dsi, channel, reqdata, reqlen);
3035 r = dsi_vc_send_bta_sync(dssdev, channel);
3039 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
3040 DSS_DSI_CONTENT_GENERIC);
3052 static int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
3055 struct dsi_data *dsi = to_dsi_data(dssdev);
3057 return dsi_vc_send_short(dsi, channel,
3058 MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, len, 0);
3061 static int dsi_enter_ulps(struct dsi_data *dsi)
3063 DECLARE_COMPLETION_ONSTACK(completion);
3067 DSSDBG("Entering ULPS");
3069 WARN_ON(!dsi_bus_is_locked(dsi));
3071 WARN_ON(dsi->ulps_enabled);
3073 if (dsi->ulps_enabled)
3076 /* DDR_CLK_ALWAYS_ON */
3077 if (REG_GET(dsi, DSI_CLK_CTRL, 13, 13)) {
3078 dsi_if_enable(dsi, 0);
3079 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
3080 dsi_if_enable(dsi, 1);
3083 dsi_sync_vc(dsi, 0);
3084 dsi_sync_vc(dsi, 1);
3085 dsi_sync_vc(dsi, 2);
3086 dsi_sync_vc(dsi, 3);
3088 dsi_force_tx_stop_mode_io(dsi);
3090 dsi_vc_enable(dsi, 0, false);
3091 dsi_vc_enable(dsi, 1, false);
3092 dsi_vc_enable(dsi, 2, false);
3093 dsi_vc_enable(dsi, 3, false);
3095 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
3096 DSSERR("HS busy when enabling ULPS\n");
3100 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
3101 DSSERR("LP busy when enabling ULPS\n");
3105 r = dsi_register_isr_cio(dsi, dsi_completion_handler, &completion,
3106 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3112 for (i = 0; i < dsi->num_lanes_supported; ++i) {
3113 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
3117 /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
3118 /* LANEx_ULPS_SIG2 */
3119 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, mask, 9, 5);
3121 /* flush posted write and wait for SCP interface to finish the write */
3122 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3124 if (wait_for_completion_timeout(&completion,
3125 msecs_to_jiffies(1000)) == 0) {
3126 DSSERR("ULPS enable timeout\n");
3131 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3132 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3134 /* Reset LANEx_ULPS_SIG2 */
3135 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, 0, 9, 5);
3137 /* flush posted write and wait for SCP interface to finish the write */
3138 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3140 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ULPS);
3142 dsi_if_enable(dsi, false);
3144 dsi->ulps_enabled = true;
3149 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3150 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3154 static void dsi_set_lp_rx_timeout(struct dsi_data *dsi, unsigned int ticks,
3158 unsigned long total_ticks;
3161 BUG_ON(ticks > 0x1fff);
3163 /* ticks in DSI_FCK */
3164 fck = dsi_fclk_rate(dsi);
3166 r = dsi_read_reg(dsi, DSI_TIMING2);
3167 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
3168 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
3169 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
3170 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
3171 dsi_write_reg(dsi, DSI_TIMING2, r);
3173 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3175 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3177 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3178 (total_ticks * 1000) / (fck / 1000 / 1000));
3181 static void dsi_set_ta_timeout(struct dsi_data *dsi, unsigned int ticks,
3185 unsigned long total_ticks;
3188 BUG_ON(ticks > 0x1fff);
3190 /* ticks in DSI_FCK */
3191 fck = dsi_fclk_rate(dsi);
3193 r = dsi_read_reg(dsi, DSI_TIMING1);
3194 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
3195 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
3196 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
3197 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
3198 dsi_write_reg(dsi, DSI_TIMING1, r);
3200 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
3202 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
3204 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
3205 (total_ticks * 1000) / (fck / 1000 / 1000));
3208 static void dsi_set_stop_state_counter(struct dsi_data *dsi, unsigned int ticks,
3212 unsigned long total_ticks;
3215 BUG_ON(ticks > 0x1fff);
3217 /* ticks in DSI_FCK */
3218 fck = dsi_fclk_rate(dsi);
3220 r = dsi_read_reg(dsi, DSI_TIMING1);
3221 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
3222 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
3223 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
3224 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
3225 dsi_write_reg(dsi, DSI_TIMING1, r);
3227 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3229 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
3231 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3232 (total_ticks * 1000) / (fck / 1000 / 1000));
3235 static void dsi_set_hs_tx_timeout(struct dsi_data *dsi, unsigned int ticks,
3239 unsigned long total_ticks;
3242 BUG_ON(ticks > 0x1fff);
3244 /* ticks in TxByteClkHS */
3245 fck = dsi_get_txbyteclkhs(dsi);
3247 r = dsi_read_reg(dsi, DSI_TIMING2);
3248 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
3249 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
3250 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
3251 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
3252 dsi_write_reg(dsi, DSI_TIMING2, r);
3254 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3256 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3258 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3259 (total_ticks * 1000) / (fck / 1000 / 1000));
3262 static void dsi_config_vp_num_line_buffers(struct dsi_data *dsi)
3264 int num_line_buffers;
3266 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3267 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3268 const struct videomode *vm = &dsi->vm;
3270 * Don't use line buffers if width is greater than the video
3271 * port's line buffer size
3273 if (dsi->line_buffer_size <= vm->hactive * bpp / 8)
3274 num_line_buffers = 0;
3276 num_line_buffers = 2;
3278 /* Use maximum number of line buffers in command mode */
3279 num_line_buffers = 2;
3283 REG_FLD_MOD(dsi, DSI_CTRL, num_line_buffers, 13, 12);
3286 static void dsi_config_vp_sync_events(struct dsi_data *dsi)
3291 if (dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE)
3296 r = dsi_read_reg(dsi, DSI_CTRL);
3297 r = FLD_MOD(r, 1, 9, 9); /* VP_DE_POL */
3298 r = FLD_MOD(r, 1, 10, 10); /* VP_HSYNC_POL */
3299 r = FLD_MOD(r, 1, 11, 11); /* VP_VSYNC_POL */
3300 r = FLD_MOD(r, 1, 15, 15); /* VP_VSYNC_START */
3301 r = FLD_MOD(r, sync_end, 16, 16); /* VP_VSYNC_END */
3302 r = FLD_MOD(r, 1, 17, 17); /* VP_HSYNC_START */
3303 r = FLD_MOD(r, sync_end, 18, 18); /* VP_HSYNC_END */
3304 dsi_write_reg(dsi, DSI_CTRL, r);
3307 static void dsi_config_blanking_modes(struct dsi_data *dsi)
3309 int blanking_mode = dsi->vm_timings.blanking_mode;
3310 int hfp_blanking_mode = dsi->vm_timings.hfp_blanking_mode;
3311 int hbp_blanking_mode = dsi->vm_timings.hbp_blanking_mode;
3312 int hsa_blanking_mode = dsi->vm_timings.hsa_blanking_mode;
3316 * 0 = TX FIFO packets sent or LPS in corresponding blanking periods
3317 * 1 = Long blanking packets are sent in corresponding blanking periods
3319 r = dsi_read_reg(dsi, DSI_CTRL);
3320 r = FLD_MOD(r, blanking_mode, 20, 20); /* BLANKING_MODE */
3321 r = FLD_MOD(r, hfp_blanking_mode, 21, 21); /* HFP_BLANKING */
3322 r = FLD_MOD(r, hbp_blanking_mode, 22, 22); /* HBP_BLANKING */
3323 r = FLD_MOD(r, hsa_blanking_mode, 23, 23); /* HSA_BLANKING */
3324 dsi_write_reg(dsi, DSI_CTRL, r);
3328 * According to section 'HS Command Mode Interleaving' in OMAP TRM, Scenario 3
3329 * results in maximum transition time for data and clock lanes to enter and
3330 * exit HS mode. Hence, this is the scenario where the least amount of command
3331 * mode data can be interleaved. We program the minimum amount of TXBYTECLKHS
3332 * clock cycles that can be used to interleave command mode data in HS so that
3333 * all scenarios are satisfied.
3335 static int dsi_compute_interleave_hs(int blank, bool ddr_alwon, int enter_hs,
3336 int exit_hs, int exiths_clk, int ddr_pre, int ddr_post)
3341 * If DDR_CLK_ALWAYS_ON is set, we need to consider HS mode transition
3342 * time of data lanes only, if it isn't set, we need to consider HS
3343 * transition time of both data and clock lanes. HS transition time
3344 * of Scenario 3 is considered.
3347 transition = enter_hs + exit_hs + max(enter_hs, 2) + 1;
3350 trans1 = ddr_pre + enter_hs + exit_hs + max(enter_hs, 2) + 1;
3351 trans2 = ddr_pre + enter_hs + exiths_clk + ddr_post + ddr_pre +
3353 transition = max(trans1, trans2);
3356 return blank > transition ? blank - transition : 0;
3360 * According to section 'LP Command Mode Interleaving' in OMAP TRM, Scenario 1
3361 * results in maximum transition time for data lanes to enter and exit LP mode.
3362 * Hence, this is the scenario where the least amount of command mode data can
3363 * be interleaved. We program the minimum amount of bytes that can be
3364 * interleaved in LP so that all scenarios are satisfied.
3366 static int dsi_compute_interleave_lp(int blank, int enter_hs, int exit_hs,
3367 int lp_clk_div, int tdsi_fclk)
3369 int trans_lp; /* time required for a LP transition, in TXBYTECLKHS */
3370 int tlp_avail; /* time left for interleaving commands, in CLKIN4DDR */
3371 int ttxclkesc; /* period of LP transmit escape clock, in CLKIN4DDR */
3372 int thsbyte_clk = 16; /* Period of TXBYTECLKHS clock, in CLKIN4DDR */
3373 int lp_inter; /* cmd mode data that can be interleaved, in bytes */
3375 /* maximum LP transition time according to Scenario 1 */
3376 trans_lp = exit_hs + max(enter_hs, 2) + 1;
3378 /* CLKIN4DDR = 16 * TXBYTECLKHS */
3379 tlp_avail = thsbyte_clk * (blank - trans_lp);
3381 ttxclkesc = tdsi_fclk * lp_clk_div;
3383 lp_inter = ((tlp_avail - 8 * thsbyte_clk - 5 * tdsi_fclk) / ttxclkesc -
3386 return max(lp_inter, 0);
3389 static void dsi_config_cmd_mode_interleaving(struct dsi_data *dsi)
3392 int hfp_blanking_mode, hbp_blanking_mode, hsa_blanking_mode;
3393 int hsa, hfp, hbp, width_bytes, bllp, lp_clk_div;
3394 int ddr_clk_pre, ddr_clk_post, enter_hs_mode_lat, exit_hs_mode_lat;
3395 int tclk_trail, ths_exit, exiths_clk;
3397 const struct videomode *vm = &dsi->vm;
3398 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3399 int ndl = dsi->num_lanes_used - 1;
3400 int dsi_fclk_hsdiv = dsi->user_dsi_cinfo.mX[HSDIV_DSI] + 1;
3401 int hsa_interleave_hs = 0, hsa_interleave_lp = 0;
3402 int hfp_interleave_hs = 0, hfp_interleave_lp = 0;
3403 int hbp_interleave_hs = 0, hbp_interleave_lp = 0;
3404 int bl_interleave_hs = 0, bl_interleave_lp = 0;
3407 r = dsi_read_reg(dsi, DSI_CTRL);
3408 blanking_mode = FLD_GET(r, 20, 20);
3409 hfp_blanking_mode = FLD_GET(r, 21, 21);
3410 hbp_blanking_mode = FLD_GET(r, 22, 22);
3411 hsa_blanking_mode = FLD_GET(r, 23, 23);
3413 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3414 hbp = FLD_GET(r, 11, 0);
3415 hfp = FLD_GET(r, 23, 12);
3416 hsa = FLD_GET(r, 31, 24);
3418 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3419 ddr_clk_post = FLD_GET(r, 7, 0);
3420 ddr_clk_pre = FLD_GET(r, 15, 8);
3422 r = dsi_read_reg(dsi, DSI_VM_TIMING7);
3423 exit_hs_mode_lat = FLD_GET(r, 15, 0);
3424 enter_hs_mode_lat = FLD_GET(r, 31, 16);
3426 r = dsi_read_reg(dsi, DSI_CLK_CTRL);
3427 lp_clk_div = FLD_GET(r, 12, 0);
3428 ddr_alwon = FLD_GET(r, 13, 13);
3430 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3431 ths_exit = FLD_GET(r, 7, 0);
3433 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3434 tclk_trail = FLD_GET(r, 15, 8);
3436 exiths_clk = ths_exit + tclk_trail;
3438 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3439 bllp = hbp + hfp + hsa + DIV_ROUND_UP(width_bytes + 6, ndl);
3441 if (!hsa_blanking_mode) {
3442 hsa_interleave_hs = dsi_compute_interleave_hs(hsa, ddr_alwon,
3443 enter_hs_mode_lat, exit_hs_mode_lat,
3444 exiths_clk, ddr_clk_pre, ddr_clk_post);
3445 hsa_interleave_lp = dsi_compute_interleave_lp(hsa,
3446 enter_hs_mode_lat, exit_hs_mode_lat,
3447 lp_clk_div, dsi_fclk_hsdiv);
3450 if (!hfp_blanking_mode) {
3451 hfp_interleave_hs = dsi_compute_interleave_hs(hfp, ddr_alwon,
3452 enter_hs_mode_lat, exit_hs_mode_lat,
3453 exiths_clk, ddr_clk_pre, ddr_clk_post);
3454 hfp_interleave_lp = dsi_compute_interleave_lp(hfp,
3455 enter_hs_mode_lat, exit_hs_mode_lat,
3456 lp_clk_div, dsi_fclk_hsdiv);
3459 if (!hbp_blanking_mode) {
3460 hbp_interleave_hs = dsi_compute_interleave_hs(hbp, ddr_alwon,
3461 enter_hs_mode_lat, exit_hs_mode_lat,
3462 exiths_clk, ddr_clk_pre, ddr_clk_post);
3464 hbp_interleave_lp = dsi_compute_interleave_lp(hbp,
3465 enter_hs_mode_lat, exit_hs_mode_lat,
3466 lp_clk_div, dsi_fclk_hsdiv);
3469 if (!blanking_mode) {
3470 bl_interleave_hs = dsi_compute_interleave_hs(bllp, ddr_alwon,
3471 enter_hs_mode_lat, exit_hs_mode_lat,
3472 exiths_clk, ddr_clk_pre, ddr_clk_post);
3474 bl_interleave_lp = dsi_compute_interleave_lp(bllp,
3475 enter_hs_mode_lat, exit_hs_mode_lat,
3476 lp_clk_div, dsi_fclk_hsdiv);
3479 DSSDBG("DSI HS interleaving(TXBYTECLKHS) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3480 hsa_interleave_hs, hfp_interleave_hs, hbp_interleave_hs,
3483 DSSDBG("DSI LP interleaving(bytes) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3484 hsa_interleave_lp, hfp_interleave_lp, hbp_interleave_lp,
3487 r = dsi_read_reg(dsi, DSI_VM_TIMING4);
3488 r = FLD_MOD(r, hsa_interleave_hs, 23, 16);
3489 r = FLD_MOD(r, hfp_interleave_hs, 15, 8);
3490 r = FLD_MOD(r, hbp_interleave_hs, 7, 0);
3491 dsi_write_reg(dsi, DSI_VM_TIMING4, r);
3493 r = dsi_read_reg(dsi, DSI_VM_TIMING5);
3494 r = FLD_MOD(r, hsa_interleave_lp, 23, 16);
3495 r = FLD_MOD(r, hfp_interleave_lp, 15, 8);
3496 r = FLD_MOD(r, hbp_interleave_lp, 7, 0);
3497 dsi_write_reg(dsi, DSI_VM_TIMING5, r);
3499 r = dsi_read_reg(dsi, DSI_VM_TIMING6);
3500 r = FLD_MOD(r, bl_interleave_hs, 31, 15);
3501 r = FLD_MOD(r, bl_interleave_lp, 16, 0);
3502 dsi_write_reg(dsi, DSI_VM_TIMING6, r);
3505 static int dsi_proto_config(struct dsi_data *dsi)
3510 dsi_config_tx_fifo(dsi, DSI_FIFO_SIZE_32,
3515 dsi_config_rx_fifo(dsi, DSI_FIFO_SIZE_32,
3520 /* XXX what values for the timeouts? */
3521 dsi_set_stop_state_counter(dsi, 0x1000, false, false);
3522 dsi_set_ta_timeout(dsi, 0x1fff, true, true);
3523 dsi_set_lp_rx_timeout(dsi, 0x1fff, true, true);
3524 dsi_set_hs_tx_timeout(dsi, 0x1fff, true, true);
3526 switch (dsi_get_pixel_size(dsi->pix_fmt)) {
3541 r = dsi_read_reg(dsi, DSI_CTRL);
3542 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
3543 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
3544 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
3545 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
3546 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
3547 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
3548 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
3549 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
3550 if (!(dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC)) {
3551 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
3552 /* DCS_CMD_CODE, 1=start, 0=continue */
3553 r = FLD_MOD(r, 0, 25, 25);
3556 dsi_write_reg(dsi, DSI_CTRL, r);
3558 dsi_config_vp_num_line_buffers(dsi);
3560 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3561 dsi_config_vp_sync_events(dsi);
3562 dsi_config_blanking_modes(dsi);
3563 dsi_config_cmd_mode_interleaving(dsi);
3566 dsi_vc_initial_config(dsi, 0);
3567 dsi_vc_initial_config(dsi, 1);
3568 dsi_vc_initial_config(dsi, 2);
3569 dsi_vc_initial_config(dsi, 3);
3574 static void dsi_proto_timings(struct dsi_data *dsi)
3576 unsigned int tlpx, tclk_zero, tclk_prepare, tclk_trail;
3577 unsigned int tclk_pre, tclk_post;
3578 unsigned int ths_prepare, ths_prepare_ths_zero, ths_zero;
3579 unsigned int ths_trail, ths_exit;
3580 unsigned int ddr_clk_pre, ddr_clk_post;
3581 unsigned int enter_hs_mode_lat, exit_hs_mode_lat;
3582 unsigned int ths_eot;
3583 int ndl = dsi->num_lanes_used - 1;
3586 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3587 ths_prepare = FLD_GET(r, 31, 24);
3588 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
3589 ths_zero = ths_prepare_ths_zero - ths_prepare;
3590 ths_trail = FLD_GET(r, 15, 8);
3591 ths_exit = FLD_GET(r, 7, 0);
3593 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3594 tlpx = FLD_GET(r, 20, 16) * 2;
3595 tclk_trail = FLD_GET(r, 15, 8);
3596 tclk_zero = FLD_GET(r, 7, 0);
3598 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
3599 tclk_prepare = FLD_GET(r, 7, 0);
3603 /* min 60ns + 52*UI */
3604 tclk_post = ns2ddr(dsi, 60) + 26;
3606 ths_eot = DIV_ROUND_UP(4, ndl);
3608 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3610 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3612 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3613 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
3615 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3616 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
3617 r = FLD_MOD(r, ddr_clk_post, 7, 0);
3618 dsi_write_reg(dsi, DSI_CLK_TIMING, r);
3620 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
3624 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
3625 DIV_ROUND_UP(ths_prepare, 4) +
3626 DIV_ROUND_UP(ths_zero + 3, 4);
3628 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
3630 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
3631 FLD_VAL(exit_hs_mode_lat, 15, 0);
3632 dsi_write_reg(dsi, DSI_VM_TIMING7, r);
3634 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
3635 enter_hs_mode_lat, exit_hs_mode_lat);
3637 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3638 /* TODO: Implement a video mode check_timings function */
3639 int hsa = dsi->vm_timings.hsa;
3640 int hfp = dsi->vm_timings.hfp;
3641 int hbp = dsi->vm_timings.hbp;
3642 int vsa = dsi->vm_timings.vsa;
3643 int vfp = dsi->vm_timings.vfp;
3644 int vbp = dsi->vm_timings.vbp;
3645 int window_sync = dsi->vm_timings.window_sync;
3647 const struct videomode *vm = &dsi->vm;
3648 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3649 int tl, t_he, width_bytes;
3651 hsync_end = dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE;
3653 ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0;
3655 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3657 /* TL = t_HS + HSA + t_HE + HFP + ceil((WC + 6) / NDL) + HBP */
3658 tl = DIV_ROUND_UP(4, ndl) + (hsync_end ? hsa : 0) + t_he + hfp +
3659 DIV_ROUND_UP(width_bytes + 6, ndl) + hbp;
3661 DSSDBG("HBP: %d, HFP: %d, HSA: %d, TL: %d TXBYTECLKHS\n", hbp,
3662 hfp, hsync_end ? hsa : 0, tl);
3663 DSSDBG("VBP: %d, VFP: %d, VSA: %d, VACT: %d lines\n", vbp, vfp,
3666 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3667 r = FLD_MOD(r, hbp, 11, 0); /* HBP */
3668 r = FLD_MOD(r, hfp, 23, 12); /* HFP */
3669 r = FLD_MOD(r, hsync_end ? hsa : 0, 31, 24); /* HSA */
3670 dsi_write_reg(dsi, DSI_VM_TIMING1, r);
3672 r = dsi_read_reg(dsi, DSI_VM_TIMING2);
3673 r = FLD_MOD(r, vbp, 7, 0); /* VBP */
3674 r = FLD_MOD(r, vfp, 15, 8); /* VFP */
3675 r = FLD_MOD(r, vsa, 23, 16); /* VSA */
3676 r = FLD_MOD(r, window_sync, 27, 24); /* WINDOW_SYNC */
3677 dsi_write_reg(dsi, DSI_VM_TIMING2, r);
3679 r = dsi_read_reg(dsi, DSI_VM_TIMING3);
3680 r = FLD_MOD(r, vm->vactive, 14, 0); /* VACT */
3681 r = FLD_MOD(r, tl, 31, 16); /* TL */
3682 dsi_write_reg(dsi, DSI_VM_TIMING3, r);
3686 static int dsi_configure_pins(struct omap_dss_device *dssdev,
3687 const struct omap_dsi_pin_config *pin_cfg)
3689 struct dsi_data *dsi = to_dsi_data(dssdev);
3692 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
3696 static const enum dsi_lane_function functions[] = {
3704 num_pins = pin_cfg->num_pins;
3705 pins = pin_cfg->pins;
3707 if (num_pins < 4 || num_pins > dsi->num_lanes_supported * 2
3708 || num_pins % 2 != 0)
3711 for (i = 0; i < DSI_MAX_NR_LANES; ++i)
3712 lanes[i].function = DSI_LANE_UNUSED;
3716 for (i = 0; i < num_pins; i += 2) {
3723 if (dx < 0 || dx >= dsi->num_lanes_supported * 2)
3726 if (dy < 0 || dy >= dsi->num_lanes_supported * 2)
3741 lanes[lane].function = functions[i / 2];
3742 lanes[lane].polarity = pol;
3746 memcpy(dsi->lanes, lanes, sizeof(dsi->lanes));
3747 dsi->num_lanes_used = num_lanes;
3752 static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
3754 struct dsi_data *dsi = to_dsi_data(dssdev);
3755 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3756 struct omap_dss_device *out = &dsi->output;
3761 if (!out->dispc_channel_connected) {
3762 DSSERR("failed to enable display: no output/manager\n");
3766 r = dsi_display_init_dispc(dsi);
3768 goto err_init_dispc;
3770 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3771 switch (dsi->pix_fmt) {
3772 case OMAP_DSS_DSI_FMT_RGB888:
3773 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24;
3775 case OMAP_DSS_DSI_FMT_RGB666:
3776 data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18;
3778 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
3779 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18;
3781 case OMAP_DSS_DSI_FMT_RGB565:
3782 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16;
3789 dsi_if_enable(dsi, false);
3790 dsi_vc_enable(dsi, channel, false);
3792 /* MODE, 1 = video mode */
3793 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 4, 4);
3795 word_count = DIV_ROUND_UP(dsi->vm.hactive * bpp, 8);
3797 dsi_vc_write_long_header(dsi, channel, data_type,
3800 dsi_vc_enable(dsi, channel, true);
3801 dsi_if_enable(dsi, true);
3804 r = dss_mgr_enable(&dsi->output);
3806 goto err_mgr_enable;
3811 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3812 dsi_if_enable(dsi, false);
3813 dsi_vc_enable(dsi, channel, false);
3816 dsi_display_uninit_dispc(dsi);
3821 static void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel)
3823 struct dsi_data *dsi = to_dsi_data(dssdev);
3825 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3826 dsi_if_enable(dsi, false);
3827 dsi_vc_enable(dsi, channel, false);
3829 /* MODE, 0 = command mode */
3830 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 0, 4, 4);
3832 dsi_vc_enable(dsi, channel, true);
3833 dsi_if_enable(dsi, true);
3836 dss_mgr_disable(&dsi->output);
3838 dsi_display_uninit_dispc(dsi);
3841 static void dsi_update_screen_dispc(struct dsi_data *dsi)
3843 unsigned int bytespp;
3844 unsigned int bytespl;
3845 unsigned int bytespf;
3846 unsigned int total_len;
3847 unsigned int packet_payload;
3848 unsigned int packet_len;
3851 const unsigned channel = dsi->update_channel;
3852 const unsigned int line_buf_size = dsi->line_buffer_size;
3853 u16 w = dsi->vm.hactive;
3854 u16 h = dsi->vm.vactive;
3856 DSSDBG("dsi_update_screen_dispc(%dx%d)\n", w, h);
3858 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_VP);
3860 bytespp = dsi_get_pixel_size(dsi->pix_fmt) / 8;
3861 bytespl = w * bytespp;
3862 bytespf = bytespl * h;
3864 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3865 * number of lines in a packet. See errata about VP_CLK_RATIO */
3867 if (bytespf < line_buf_size)
3868 packet_payload = bytespf;
3870 packet_payload = (line_buf_size) / bytespl * bytespl;
3872 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3873 total_len = (bytespf / packet_payload) * packet_len;
3875 if (bytespf % packet_payload)
3876 total_len += (bytespf % packet_payload) + 1;
3878 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3879 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3881 dsi_vc_write_long_header(dsi, channel, MIPI_DSI_DCS_LONG_WRITE,
3884 if (dsi->te_enabled)
3885 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3887 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3888 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3890 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3891 * because DSS interrupts are not capable of waking up the CPU and the
3892 * framedone interrupt could be delayed for quite a long time. I think
3893 * the same goes for any DSS interrupts, but for some reason I have not
3894 * seen the problem anywhere else than here.
3896 dispc_disable_sidle(dsi->dss->dispc);
3898 dsi_perf_mark_start(dsi);
3900 r = schedule_delayed_work(&dsi->framedone_timeout_work,
3901 msecs_to_jiffies(250));
3904 dss_mgr_start_update(&dsi->output);
3906 if (dsi->te_enabled) {
3907 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3908 * for TE is longer than the timer allows */
3909 REG_FLD_MOD(dsi, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3911 dsi_vc_send_bta(dsi, channel);
3913 #ifdef DSI_CATCH_MISSING_TE
3914 mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250));
3919 #ifdef DSI_CATCH_MISSING_TE
3920 static void dsi_te_timeout(struct timer_list *unused)
3922 DSSERR("TE not received for 250ms!\n");
3926 static void dsi_handle_framedone(struct dsi_data *dsi, int error)
3928 /* SIDLEMODE back to smart-idle */
3929 dispc_enable_sidle(dsi->dss->dispc);
3931 if (dsi->te_enabled) {
3932 /* enable LP_RX_TO again after the TE */
3933 REG_FLD_MOD(dsi, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
3936 dsi->framedone_callback(error, dsi->framedone_data);
3939 dsi_perf_show(dsi, "DISPC");
3942 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
3944 struct dsi_data *dsi = container_of(work, struct dsi_data,
3945 framedone_timeout_work.work);
3946 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
3947 * 250ms which would conflict with this timeout work. What should be
3948 * done is first cancel the transfer on the HW, and then cancel the
3949 * possibly scheduled framedone work. However, cancelling the transfer
3950 * on the HW is buggy, and would probably require resetting the whole
3953 DSSERR("Framedone not received for 250ms!\n");
3955 dsi_handle_framedone(dsi, -ETIMEDOUT);
3958 static void dsi_framedone_irq_callback(void *data)
3960 struct dsi_data *dsi = data;
3962 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
3963 * turns itself off. However, DSI still has the pixels in its buffers,
3964 * and is sending the data.
3967 cancel_delayed_work(&dsi->framedone_timeout_work);
3969 dsi_handle_framedone(dsi, 0);
3972 static int dsi_update(struct omap_dss_device *dssdev, int channel,
3973 void (*callback)(int, void *), void *data)
3975 struct dsi_data *dsi = to_dsi_data(dssdev);
3978 dsi_perf_mark_setup(dsi);
3980 dsi->update_channel = channel;
3982 dsi->framedone_callback = callback;
3983 dsi->framedone_data = data;
3985 dw = dsi->vm.hactive;
3986 dh = dsi->vm.vactive;
3988 #ifdef DSI_PERF_MEASURE
3989 dsi->update_bytes = dw * dh *
3990 dsi_get_pixel_size(dsi->pix_fmt) / 8;
3992 dsi_update_screen_dispc(dsi);
3999 static int dsi_configure_dispc_clocks(struct dsi_data *dsi)
4001 struct dispc_clock_info dispc_cinfo;
4005 fck = dsi_get_pll_hsdiv_dispc_rate(dsi);
4007 dispc_cinfo.lck_div = dsi->user_dispc_cinfo.lck_div;
4008 dispc_cinfo.pck_div = dsi->user_dispc_cinfo.pck_div;
4010 r = dispc_calc_clock_rates(dsi->dss->dispc, fck, &dispc_cinfo);
4012 DSSERR("Failed to calc dispc clocks\n");
4016 dsi->mgr_config.clock_info = dispc_cinfo;
4021 static int dsi_display_init_dispc(struct dsi_data *dsi)
4023 enum omap_channel channel = dsi->output.dispc_channel;
4026 dss_select_lcd_clk_source(dsi->dss, channel, dsi->module_id == 0 ?
4027 DSS_CLK_SRC_PLL1_1 :
4028 DSS_CLK_SRC_PLL2_1);
4030 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) {
4031 r = dss_mgr_register_framedone_handler(&dsi->output,
4032 dsi_framedone_irq_callback, dsi);
4034 DSSERR("can't register FRAMEDONE handler\n");
4038 dsi->mgr_config.stallmode = true;
4039 dsi->mgr_config.fifohandcheck = true;
4041 dsi->mgr_config.stallmode = false;
4042 dsi->mgr_config.fifohandcheck = false;
4045 r = dsi_configure_dispc_clocks(dsi);
4049 dsi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
4050 dsi->mgr_config.video_port_width =
4051 dsi_get_pixel_size(dsi->pix_fmt);
4052 dsi->mgr_config.lcden_sig_polarity = 0;
4054 dss_mgr_set_lcd_config(&dsi->output, &dsi->mgr_config);
4058 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4059 dss_mgr_unregister_framedone_handler(&dsi->output,
4060 dsi_framedone_irq_callback, dsi);
4062 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4066 static void dsi_display_uninit_dispc(struct dsi_data *dsi)
4068 enum omap_channel channel = dsi->output.dispc_channel;
4070 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4071 dss_mgr_unregister_framedone_handler(&dsi->output,
4072 dsi_framedone_irq_callback, dsi);
4074 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4077 static int dsi_configure_dsi_clocks(struct dsi_data *dsi)
4079 struct dss_pll_clock_info cinfo;
4082 cinfo = dsi->user_dsi_cinfo;
4084 r = dss_pll_set_config(&dsi->pll, &cinfo);
4086 DSSERR("Failed to set dsi clocks\n");
4093 static int dsi_display_init_dsi(struct dsi_data *dsi)
4097 r = dss_pll_enable(&dsi->pll);
4101 r = dsi_configure_dsi_clocks(dsi);
4105 dss_select_dsi_clk_source(dsi->dss, dsi->module_id,
4106 dsi->module_id == 0 ?
4107 DSS_CLK_SRC_PLL1_2 : DSS_CLK_SRC_PLL2_2);
4111 r = dsi_cio_init(dsi);
4115 _dsi_print_reset_status(dsi);
4117 dsi_proto_timings(dsi);
4118 dsi_set_lp_clk_divisor(dsi);
4121 _dsi_print_reset_status(dsi);
4123 r = dsi_proto_config(dsi);
4127 /* enable interface */
4128 dsi_vc_enable(dsi, 0, 1);
4129 dsi_vc_enable(dsi, 1, 1);
4130 dsi_vc_enable(dsi, 2, 1);
4131 dsi_vc_enable(dsi, 3, 1);
4132 dsi_if_enable(dsi, 1);
4133 dsi_force_tx_stop_mode_io(dsi);
4137 dsi_cio_uninit(dsi);
4139 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4141 dss_pll_disable(&dsi->pll);
4146 static void dsi_display_uninit_dsi(struct dsi_data *dsi, bool disconnect_lanes,
4149 if (enter_ulps && !dsi->ulps_enabled)
4150 dsi_enter_ulps(dsi);
4152 /* disable interface */
4153 dsi_if_enable(dsi, 0);
4154 dsi_vc_enable(dsi, 0, 0);
4155 dsi_vc_enable(dsi, 1, 0);
4156 dsi_vc_enable(dsi, 2, 0);
4157 dsi_vc_enable(dsi, 3, 0);
4159 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4160 dsi_cio_uninit(dsi);
4161 dsi_pll_uninit(dsi, disconnect_lanes);
4164 static int dsi_display_enable(struct omap_dss_device *dssdev)
4166 struct dsi_data *dsi = to_dsi_data(dssdev);
4169 DSSDBG("dsi_display_enable\n");
4171 WARN_ON(!dsi_bus_is_locked(dsi));
4173 mutex_lock(&dsi->lock);
4175 r = dsi_runtime_get(dsi);
4179 _dsi_initialize_irq(dsi);
4181 r = dsi_display_init_dsi(dsi);
4185 mutex_unlock(&dsi->lock);
4190 dsi_runtime_put(dsi);
4192 mutex_unlock(&dsi->lock);
4193 DSSDBG("dsi_display_enable FAILED\n");
4197 static void dsi_display_disable(struct omap_dss_device *dssdev,
4198 bool disconnect_lanes, bool enter_ulps)
4200 struct dsi_data *dsi = to_dsi_data(dssdev);
4202 DSSDBG("dsi_display_disable\n");
4204 WARN_ON(!dsi_bus_is_locked(dsi));
4206 mutex_lock(&dsi->lock);
4208 dsi_sync_vc(dsi, 0);
4209 dsi_sync_vc(dsi, 1);
4210 dsi_sync_vc(dsi, 2);
4211 dsi_sync_vc(dsi, 3);
4213 dsi_display_uninit_dsi(dsi, disconnect_lanes, enter_ulps);
4215 dsi_runtime_put(dsi);
4217 mutex_unlock(&dsi->lock);
4220 static int dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
4222 struct dsi_data *dsi = to_dsi_data(dssdev);
4224 dsi->te_enabled = enable;
4228 #ifdef PRINT_VERBOSE_VM_TIMINGS
4229 static void print_dsi_vm(const char *str,
4230 const struct omap_dss_dsi_videomode_timings *t)
4232 unsigned long byteclk = t->hsclk / 4;
4233 int bl, wc, pps, tot;
4235 wc = DIV_ROUND_UP(t->hact * t->bitspp, 8);
4236 pps = DIV_ROUND_UP(wc + 6, t->ndl); /* pixel packet size */
4237 bl = t->hss + t->hsa + t->hse + t->hbp + t->hfp;
4240 #define TO_DSI_T(x) ((u32)div64_u64((u64)x * 1000000000llu, byteclk))
4242 pr_debug("%s bck %lu, %u/%u/%u/%u/%u/%u = %u+%u = %u, "
4243 "%u/%u/%u/%u/%u/%u = %u + %u = %u\n",
4246 t->hss, t->hsa, t->hse, t->hbp, pps, t->hfp,
4262 static void print_dispc_vm(const char *str, const struct videomode *vm)
4264 unsigned long pck = vm->pixelclock;
4268 bl = vm->hsync_len + vm->hback_porch + vm->hfront_porch;
4271 #define TO_DISPC_T(x) ((u32)div64_u64((u64)x * 1000000000llu, pck))
4273 pr_debug("%s pck %lu, %u/%u/%u/%u = %u+%u = %u, "
4274 "%u/%u/%u/%u = %u + %u = %u\n",
4277 vm->hsync_len, vm->hback_porch, hact, vm->hfront_porch,
4279 TO_DISPC_T(vm->hsync_len),
4280 TO_DISPC_T(vm->hback_porch),
4282 TO_DISPC_T(vm->hfront_porch),
4289 /* note: this is not quite accurate */
4290 static void print_dsi_dispc_vm(const char *str,
4291 const struct omap_dss_dsi_videomode_timings *t)
4293 struct videomode vm = { 0 };
4294 unsigned long byteclk = t->hsclk / 4;
4297 int dsi_hact, dsi_htot;
4299 dsi_tput = (u64)byteclk * t->ndl * 8;
4300 pck = (u32)div64_u64(dsi_tput, t->bitspp);
4301 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(t->hact * t->bitspp, 8) + 6, t->ndl);
4302 dsi_htot = t->hss + t->hsa + t->hse + t->hbp + dsi_hact + t->hfp;
4304 vm.pixelclock = pck;
4305 vm.hsync_len = div64_u64((u64)(t->hsa + t->hse) * pck, byteclk);
4306 vm.hback_porch = div64_u64((u64)t->hbp * pck, byteclk);
4307 vm.hfront_porch = div64_u64((u64)t->hfp * pck, byteclk);
4308 vm.hactive = t->hact;
4310 print_dispc_vm(str, &vm);
4312 #endif /* PRINT_VERBOSE_VM_TIMINGS */
4314 static bool dsi_cm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4315 unsigned long pck, void *data)
4317 struct dsi_clk_calc_ctx *ctx = data;
4318 struct videomode *vm = &ctx->vm;
4320 ctx->dispc_cinfo.lck_div = lckd;
4321 ctx->dispc_cinfo.pck_div = pckd;
4322 ctx->dispc_cinfo.lck = lck;
4323 ctx->dispc_cinfo.pck = pck;
4325 *vm = *ctx->config->vm;
4326 vm->pixelclock = pck;
4327 vm->hactive = ctx->config->vm->hactive;
4328 vm->vactive = ctx->config->vm->vactive;
4329 vm->hsync_len = vm->hfront_porch = vm->hback_porch = vm->vsync_len = 1;
4330 vm->vfront_porch = vm->vback_porch = 0;
4335 static bool dsi_cm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4338 struct dsi_clk_calc_ctx *ctx = data;
4340 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4341 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4343 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4344 ctx->req_pck_min, ctx->req_pck_max,
4345 dsi_cm_calc_dispc_cb, ctx);
4348 static bool dsi_cm_calc_pll_cb(int n, int m, unsigned long fint,
4349 unsigned long clkdco, void *data)
4351 struct dsi_clk_calc_ctx *ctx = data;
4352 struct dsi_data *dsi = ctx->dsi;
4354 ctx->dsi_cinfo.n = n;
4355 ctx->dsi_cinfo.m = m;
4356 ctx->dsi_cinfo.fint = fint;
4357 ctx->dsi_cinfo.clkdco = clkdco;
4359 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4360 dsi->data->max_fck_freq,
4361 dsi_cm_calc_hsdiv_cb, ctx);
4364 static bool dsi_cm_calc(struct dsi_data *dsi,
4365 const struct omap_dss_dsi_config *cfg,
4366 struct dsi_clk_calc_ctx *ctx)
4368 unsigned long clkin;
4370 unsigned long pll_min, pll_max;
4371 unsigned long pck, txbyteclk;
4373 clkin = clk_get_rate(dsi->pll.clkin);
4374 bitspp = dsi_get_pixel_size(cfg->pixel_format);
4375 ndl = dsi->num_lanes_used - 1;
4378 * Here we should calculate minimum txbyteclk to be able to send the
4379 * frame in time, and also to handle TE. That's not very simple, though,
4380 * especially as we go to LP between each pixel packet due to HW
4381 * "feature". So let's just estimate very roughly and multiply by 1.5.
4383 pck = cfg->vm->pixelclock;
4385 txbyteclk = pck * bitspp / 8 / ndl;
4387 memset(ctx, 0, sizeof(*ctx));
4389 ctx->pll = &dsi->pll;
4391 ctx->req_pck_min = pck;
4392 ctx->req_pck_nom = pck;
4393 ctx->req_pck_max = pck * 3 / 2;
4395 pll_min = max(cfg->hs_clk_min * 4, txbyteclk * 4 * 4);
4396 pll_max = cfg->hs_clk_max * 4;
4398 return dss_pll_calc_a(ctx->pll, clkin,
4400 dsi_cm_calc_pll_cb, ctx);
4403 static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx)
4405 struct dsi_data *dsi = ctx->dsi;
4406 const struct omap_dss_dsi_config *cfg = ctx->config;
4407 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4408 int ndl = dsi->num_lanes_used - 1;
4409 unsigned long hsclk = ctx->dsi_cinfo.clkdco / 4;
4410 unsigned long byteclk = hsclk / 4;
4412 unsigned long dispc_pck, req_pck_min, req_pck_nom, req_pck_max;
4414 int panel_htot, panel_hbl; /* pixels */
4415 int dispc_htot, dispc_hbl; /* pixels */
4416 int dsi_htot, dsi_hact, dsi_hbl, hss, hse; /* byteclks */
4418 const struct videomode *req_vm;
4419 struct videomode *dispc_vm;
4420 struct omap_dss_dsi_videomode_timings *dsi_vm;
4421 u64 dsi_tput, dispc_tput;
4423 dsi_tput = (u64)byteclk * ndl * 8;
4426 req_pck_min = ctx->req_pck_min;
4427 req_pck_max = ctx->req_pck_max;
4428 req_pck_nom = ctx->req_pck_nom;
4430 dispc_pck = ctx->dispc_cinfo.pck;
4431 dispc_tput = (u64)dispc_pck * bitspp;
4433 xres = req_vm->hactive;
4435 panel_hbl = req_vm->hfront_porch + req_vm->hback_porch +
4437 panel_htot = xres + panel_hbl;
4439 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(xres * bitspp, 8) + 6, ndl);
4442 * When there are no line buffers, DISPC and DSI must have the
4443 * same tput. Otherwise DISPC tput needs to be higher than DSI's.
4445 if (dsi->line_buffer_size < xres * bitspp / 8) {
4446 if (dispc_tput != dsi_tput)
4449 if (dispc_tput < dsi_tput)
4453 /* DSI tput must be over the min requirement */
4454 if (dsi_tput < (u64)bitspp * req_pck_min)
4457 /* When non-burst mode, DSI tput must be below max requirement. */
4458 if (cfg->trans_mode != OMAP_DSS_DSI_BURST_MODE) {
4459 if (dsi_tput > (u64)bitspp * req_pck_max)
4463 hss = DIV_ROUND_UP(4, ndl);
4465 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4466 if (ndl == 3 && req_vm->hsync_len == 0)
4469 hse = DIV_ROUND_UP(4, ndl);
4474 /* DSI htot to match the panel's nominal pck */
4475 dsi_htot = div64_u64((u64)panel_htot * byteclk, req_pck_nom);
4477 /* fail if there would be no time for blanking */
4478 if (dsi_htot < hss + hse + dsi_hact)
4481 /* total DSI blanking needed to achieve panel's TL */
4482 dsi_hbl = dsi_htot - dsi_hact;
4484 /* DISPC htot to match the DSI TL */
4485 dispc_htot = div64_u64((u64)dsi_htot * dispc_pck, byteclk);
4487 /* verify that the DSI and DISPC TLs are the same */
4488 if ((u64)dsi_htot * dispc_pck != (u64)dispc_htot * byteclk)
4491 dispc_hbl = dispc_htot - xres;
4493 /* setup DSI videomode */
4495 dsi_vm = &ctx->dsi_vm;
4496 memset(dsi_vm, 0, sizeof(*dsi_vm));
4498 dsi_vm->hsclk = hsclk;
4501 dsi_vm->bitspp = bitspp;
4503 if (cfg->trans_mode != OMAP_DSS_DSI_PULSE_MODE) {
4505 } else if (ndl == 3 && req_vm->hsync_len == 0) {
4508 hsa = div64_u64((u64)req_vm->hsync_len * byteclk, req_pck_nom);
4509 hsa = max(hsa - hse, 1);
4512 hbp = div64_u64((u64)req_vm->hback_porch * byteclk, req_pck_nom);
4515 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4518 /* we need to take cycles from hbp */
4521 hbp = max(hbp - t, 1);
4522 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4524 if (hfp < 1 && hsa > 0) {
4525 /* we need to take cycles from hsa */
4527 hsa = max(hsa - t, 1);
4528 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4539 dsi_vm->hact = xres;
4542 dsi_vm->vsa = req_vm->vsync_len;
4543 dsi_vm->vbp = req_vm->vback_porch;
4544 dsi_vm->vact = req_vm->vactive;
4545 dsi_vm->vfp = req_vm->vfront_porch;
4547 dsi_vm->trans_mode = cfg->trans_mode;
4549 dsi_vm->blanking_mode = 0;
4550 dsi_vm->hsa_blanking_mode = 1;
4551 dsi_vm->hfp_blanking_mode = 1;
4552 dsi_vm->hbp_blanking_mode = 1;
4554 dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on;
4555 dsi_vm->window_sync = 4;
4557 /* setup DISPC videomode */
4559 dispc_vm = &ctx->vm;
4560 *dispc_vm = *req_vm;
4561 dispc_vm->pixelclock = dispc_pck;
4563 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4564 hsa = div64_u64((u64)req_vm->hsync_len * dispc_pck,
4571 hbp = div64_u64((u64)req_vm->hback_porch * dispc_pck, req_pck_nom);
4574 hfp = dispc_hbl - hsa - hbp;
4577 /* we need to take cycles from hbp */
4580 hbp = max(hbp - t, 1);
4581 hfp = dispc_hbl - hsa - hbp;
4584 /* we need to take cycles from hsa */
4586 hsa = max(hsa - t, 1);
4587 hfp = dispc_hbl - hsa - hbp;
4594 dispc_vm->hfront_porch = hfp;
4595 dispc_vm->hsync_len = hsa;
4596 dispc_vm->hback_porch = hbp;
4602 static bool dsi_vm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4603 unsigned long pck, void *data)
4605 struct dsi_clk_calc_ctx *ctx = data;
4607 ctx->dispc_cinfo.lck_div = lckd;
4608 ctx->dispc_cinfo.pck_div = pckd;
4609 ctx->dispc_cinfo.lck = lck;
4610 ctx->dispc_cinfo.pck = pck;
4612 if (dsi_vm_calc_blanking(ctx) == false)
4615 #ifdef PRINT_VERBOSE_VM_TIMINGS
4616 print_dispc_vm("dispc", &ctx->vm);
4617 print_dsi_vm("dsi ", &ctx->dsi_vm);
4618 print_dispc_vm("req ", ctx->config->vm);
4619 print_dsi_dispc_vm("act ", &ctx->dsi_vm);
4625 static bool dsi_vm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4628 struct dsi_clk_calc_ctx *ctx = data;
4629 unsigned long pck_max;
4631 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4632 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4635 * In burst mode we can let the dispc pck be arbitrarily high, but it
4636 * limits our scaling abilities. So for now, don't aim too high.
4639 if (ctx->config->trans_mode == OMAP_DSS_DSI_BURST_MODE)
4640 pck_max = ctx->req_pck_max + 10000000;
4642 pck_max = ctx->req_pck_max;
4644 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4645 ctx->req_pck_min, pck_max,
4646 dsi_vm_calc_dispc_cb, ctx);
4649 static bool dsi_vm_calc_pll_cb(int n, int m, unsigned long fint,
4650 unsigned long clkdco, void *data)
4652 struct dsi_clk_calc_ctx *ctx = data;
4653 struct dsi_data *dsi = ctx->dsi;
4655 ctx->dsi_cinfo.n = n;
4656 ctx->dsi_cinfo.m = m;
4657 ctx->dsi_cinfo.fint = fint;
4658 ctx->dsi_cinfo.clkdco = clkdco;
4660 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4661 dsi->data->max_fck_freq,
4662 dsi_vm_calc_hsdiv_cb, ctx);
4665 static bool dsi_vm_calc(struct dsi_data *dsi,
4666 const struct omap_dss_dsi_config *cfg,
4667 struct dsi_clk_calc_ctx *ctx)
4669 const struct videomode *vm = cfg->vm;
4670 unsigned long clkin;
4671 unsigned long pll_min;
4672 unsigned long pll_max;
4673 int ndl = dsi->num_lanes_used - 1;
4674 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4675 unsigned long byteclk_min;
4677 clkin = clk_get_rate(dsi->pll.clkin);
4679 memset(ctx, 0, sizeof(*ctx));
4681 ctx->pll = &dsi->pll;
4684 /* these limits should come from the panel driver */
4685 ctx->req_pck_min = vm->pixelclock - 1000;
4686 ctx->req_pck_nom = vm->pixelclock;
4687 ctx->req_pck_max = vm->pixelclock + 1000;
4689 byteclk_min = div64_u64((u64)ctx->req_pck_min * bitspp, ndl * 8);
4690 pll_min = max(cfg->hs_clk_min * 4, byteclk_min * 4 * 4);
4692 if (cfg->trans_mode == OMAP_DSS_DSI_BURST_MODE) {
4693 pll_max = cfg->hs_clk_max * 4;
4695 unsigned long byteclk_max;
4696 byteclk_max = div64_u64((u64)ctx->req_pck_max * bitspp,
4699 pll_max = byteclk_max * 4 * 4;
4702 return dss_pll_calc_a(ctx->pll, clkin,
4704 dsi_vm_calc_pll_cb, ctx);
4707 static int dsi_set_config(struct omap_dss_device *dssdev,
4708 const struct omap_dss_dsi_config *config)
4710 struct dsi_data *dsi = to_dsi_data(dssdev);
4711 struct dsi_clk_calc_ctx ctx;
4715 mutex_lock(&dsi->lock);
4717 dsi->pix_fmt = config->pixel_format;
4718 dsi->mode = config->mode;
4720 if (config->mode == OMAP_DSS_DSI_VIDEO_MODE)
4721 ok = dsi_vm_calc(dsi, config, &ctx);
4723 ok = dsi_cm_calc(dsi, config, &ctx);
4726 DSSERR("failed to find suitable DSI clock settings\n");
4731 dsi_pll_calc_dsi_fck(dsi, &ctx.dsi_cinfo);
4733 r = dsi_lp_clock_calc(ctx.dsi_cinfo.clkout[HSDIV_DSI],
4734 config->lp_clk_min, config->lp_clk_max, &dsi->user_lp_cinfo);
4736 DSSERR("failed to find suitable DSI LP clock settings\n");
4740 dsi->user_dsi_cinfo = ctx.dsi_cinfo;
4741 dsi->user_dispc_cinfo = ctx.dispc_cinfo;
4746 * override interlace, logic level and edge related parameters in
4747 * videomode with default values
4749 dsi->vm.flags &= ~DISPLAY_FLAGS_INTERLACED;
4750 dsi->vm.flags &= ~DISPLAY_FLAGS_HSYNC_LOW;
4751 dsi->vm.flags |= DISPLAY_FLAGS_HSYNC_HIGH;
4752 dsi->vm.flags &= ~DISPLAY_FLAGS_VSYNC_LOW;
4753 dsi->vm.flags |= DISPLAY_FLAGS_VSYNC_HIGH;
4755 dss_mgr_set_timings(&dsi->output, &dsi->vm);
4757 dsi->vm_timings = ctx.dsi_vm;
4759 mutex_unlock(&dsi->lock);
4763 mutex_unlock(&dsi->lock);
4769 * Return a hardcoded channel for the DSI output. This should work for
4770 * current use cases, but this can be later expanded to either resolve
4771 * the channel in some more dynamic manner, or get the channel as a user
4774 static enum omap_channel dsi_get_channel(struct dsi_data *dsi)
4776 switch (dsi->data->model) {
4777 case DSI_MODEL_OMAP3:
4778 return OMAP_DSS_CHANNEL_LCD;
4780 case DSI_MODEL_OMAP4:
4781 switch (dsi->module_id) {
4783 return OMAP_DSS_CHANNEL_LCD;
4785 return OMAP_DSS_CHANNEL_LCD2;
4787 DSSWARN("unsupported module id\n");
4788 return OMAP_DSS_CHANNEL_LCD;
4791 case DSI_MODEL_OMAP5:
4792 switch (dsi->module_id) {
4794 return OMAP_DSS_CHANNEL_LCD;
4796 return OMAP_DSS_CHANNEL_LCD3;
4798 DSSWARN("unsupported module id\n");
4799 return OMAP_DSS_CHANNEL_LCD;
4803 DSSWARN("unsupported DSS version\n");
4804 return OMAP_DSS_CHANNEL_LCD;
4808 static int dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
4810 struct dsi_data *dsi = to_dsi_data(dssdev);
4813 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
4814 if (!dsi->vc[i].dssdev) {
4815 dsi->vc[i].dssdev = dssdev;
4821 DSSERR("cannot get VC for display %s", dssdev->name);
4825 static int dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
4827 struct dsi_data *dsi = to_dsi_data(dssdev);
4829 if (vc_id < 0 || vc_id > 3) {
4830 DSSERR("VC ID out of range\n");
4834 if (channel < 0 || channel > 3) {
4835 DSSERR("Virtual Channel out of range\n");
4839 if (dsi->vc[channel].dssdev != dssdev) {
4840 DSSERR("Virtual Channel not allocated to display %s\n",
4845 dsi->vc[channel].vc_id = vc_id;
4850 static void dsi_release_vc(struct omap_dss_device *dssdev, int channel)
4852 struct dsi_data *dsi = to_dsi_data(dssdev);
4854 if ((channel >= 0 && channel <= 3) &&
4855 dsi->vc[channel].dssdev == dssdev) {
4856 dsi->vc[channel].dssdev = NULL;
4857 dsi->vc[channel].vc_id = 0;
4862 static int dsi_get_clocks(struct dsi_data *dsi)
4866 clk = devm_clk_get(dsi->dev, "fck");
4868 DSSERR("can't get fck\n");
4869 return PTR_ERR(clk);
4877 static int dsi_connect(struct omap_dss_device *src,
4878 struct omap_dss_device *dst)
4882 r = omapdss_device_connect(dst->dss, dst, dst->next);
4886 dst->dispc_channel_connected = true;
4890 static void dsi_disconnect(struct omap_dss_device *src,
4891 struct omap_dss_device *dst)
4893 dst->dispc_channel_connected = false;
4895 omapdss_device_disconnect(dst, dst->next);
4898 static const struct omap_dss_device_ops dsi_ops = {
4899 .connect = dsi_connect,
4900 .disconnect = dsi_disconnect,
4901 .enable = dsi_display_enable,
4904 .bus_lock = dsi_bus_lock,
4905 .bus_unlock = dsi_bus_unlock,
4907 .disable = dsi_display_disable,
4909 .enable_hs = dsi_vc_enable_hs,
4911 .configure_pins = dsi_configure_pins,
4912 .set_config = dsi_set_config,
4914 .enable_video_output = dsi_enable_video_output,
4915 .disable_video_output = dsi_disable_video_output,
4917 .update = dsi_update,
4919 .enable_te = dsi_enable_te,
4921 .request_vc = dsi_request_vc,
4922 .set_vc_id = dsi_set_vc_id,
4923 .release_vc = dsi_release_vc,
4925 .dcs_write = dsi_vc_dcs_write,
4926 .dcs_write_nosync = dsi_vc_dcs_write_nosync,
4927 .dcs_read = dsi_vc_dcs_read,
4929 .gen_write = dsi_vc_generic_write,
4930 .gen_write_nosync = dsi_vc_generic_write_nosync,
4931 .gen_read = dsi_vc_generic_read,
4933 .bta_sync = dsi_vc_send_bta_sync,
4935 .set_max_rx_packet_size = dsi_vc_set_max_rx_packet_size,
4939 /* -----------------------------------------------------------------------------
4943 static const struct dss_pll_ops dsi_pll_ops = {
4944 .enable = dsi_pll_enable,
4945 .disable = dsi_pll_disable,
4946 .set_config = dss_pll_write_config_type_a,
4949 static const struct dss_pll_hw dss_omap3_dsi_pll_hw = {
4950 .type = DSS_PLL_TYPE_A,
4952 .n_max = (1 << 7) - 1,
4953 .m_max = (1 << 11) - 1,
4954 .mX_max = (1 << 4) - 1,
4956 .fint_max = 2100000,
4957 .clkdco_low = 1000000000,
4958 .clkdco_max = 1800000000,
4970 .has_stopmode = true,
4971 .has_freqsel = true,
4972 .has_selfreqdco = false,
4973 .has_refsel = false,
4976 static const struct dss_pll_hw dss_omap4_dsi_pll_hw = {
4977 .type = DSS_PLL_TYPE_A,
4979 .n_max = (1 << 8) - 1,
4980 .m_max = (1 << 12) - 1,
4981 .mX_max = (1 << 5) - 1,
4983 .fint_max = 2500000,
4984 .clkdco_low = 1000000000,
4985 .clkdco_max = 1800000000,
4997 .has_stopmode = true,
4998 .has_freqsel = false,
4999 .has_selfreqdco = false,
5000 .has_refsel = false,
5003 static const struct dss_pll_hw dss_omap5_dsi_pll_hw = {
5004 .type = DSS_PLL_TYPE_A,
5006 .n_max = (1 << 8) - 1,
5007 .m_max = (1 << 12) - 1,
5008 .mX_max = (1 << 5) - 1,
5010 .fint_max = 52000000,
5011 .clkdco_low = 1000000000,
5012 .clkdco_max = 1800000000,
5024 .has_stopmode = true,
5025 .has_freqsel = false,
5026 .has_selfreqdco = true,
5030 static int dsi_init_pll_data(struct dss_device *dss, struct dsi_data *dsi)
5032 struct dss_pll *pll = &dsi->pll;
5036 clk = devm_clk_get(dsi->dev, "sys_clk");
5038 DSSERR("can't get sys_clk\n");
5039 return PTR_ERR(clk);
5042 pll->name = dsi->module_id == 0 ? "dsi0" : "dsi1";
5043 pll->id = dsi->module_id == 0 ? DSS_PLL_DSI1 : DSS_PLL_DSI2;
5045 pll->base = dsi->pll_base;
5046 pll->hw = dsi->data->pll_hw;
5047 pll->ops = &dsi_pll_ops;
5049 r = dss_pll_register(dss, pll);
5056 /* -----------------------------------------------------------------------------
5057 * Component Bind & Unbind
5060 static int dsi_bind(struct device *dev, struct device *master, void *data)
5062 struct dss_device *dss = dss_get_device(master);
5063 struct dsi_data *dsi = dev_get_drvdata(dev);
5070 dsi_init_pll_data(dss, dsi);
5072 r = dsi_runtime_get(dsi);
5076 rev = dsi_read_reg(dsi, DSI_REVISION);
5077 dev_dbg(dev, "OMAP DSI rev %d.%d\n",
5078 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
5080 dsi->line_buffer_size = dsi_get_line_buf_size(dsi);
5082 dsi_runtime_put(dsi);
5084 snprintf(name, sizeof(name), "dsi%u_regs", dsi->module_id + 1);
5085 dsi->debugfs.regs = dss_debugfs_create_file(dss, name,
5086 dsi_dump_dsi_regs, &dsi);
5087 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5088 snprintf(name, sizeof(name), "dsi%u_irqs", dsi->module_id + 1);
5089 dsi->debugfs.irqs = dss_debugfs_create_file(dss, name,
5090 dsi_dump_dsi_irqs, &dsi);
5092 snprintf(name, sizeof(name), "dsi%u_clks", dsi->module_id + 1);
5093 dsi->debugfs.clks = dss_debugfs_create_file(dss, name,
5094 dsi_dump_dsi_clocks, &dsi);
5099 static void dsi_unbind(struct device *dev, struct device *master, void *data)
5101 struct dsi_data *dsi = dev_get_drvdata(dev);
5103 dss_debugfs_remove_file(dsi->debugfs.clks);
5104 dss_debugfs_remove_file(dsi->debugfs.irqs);
5105 dss_debugfs_remove_file(dsi->debugfs.regs);
5107 of_platform_depopulate(dev);
5109 WARN_ON(dsi->scp_clk_refcount > 0);
5111 dss_pll_unregister(&dsi->pll);
5114 static const struct component_ops dsi_component_ops = {
5116 .unbind = dsi_unbind,
5119 /* -----------------------------------------------------------------------------
5120 * Probe & Remove, Suspend & Resume
5123 static int dsi_init_output(struct dsi_data *dsi)
5125 struct omap_dss_device *out = &dsi->output;
5128 out->dev = dsi->dev;
5129 out->id = dsi->module_id == 0 ?
5130 OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2;
5132 out->output_type = OMAP_DISPLAY_TYPE_DSI;
5133 out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1";
5134 out->dispc_channel = dsi_get_channel(dsi);
5135 out->ops = &dsi_ops;
5136 out->owner = THIS_MODULE;
5137 out->of_ports = BIT(0);
5138 out->bus_flags = DRM_BUS_FLAG_PIXDATA_POSEDGE
5139 | DRM_BUS_FLAG_DE_HIGH
5140 | DRM_BUS_FLAG_SYNC_NEGEDGE;
5142 out->next = omapdss_of_find_connected_device(out->dev->of_node, 0);
5143 if (IS_ERR(out->next)) {
5144 if (PTR_ERR(out->next) != -EPROBE_DEFER)
5145 dev_err(out->dev, "failed to find video sink\n");
5146 return PTR_ERR(out->next);
5149 r = omapdss_output_validate(out);
5151 omapdss_device_put(out->next);
5156 omapdss_device_register(out);
5161 static void dsi_uninit_output(struct dsi_data *dsi)
5163 struct omap_dss_device *out = &dsi->output;
5166 omapdss_device_put(out->next);
5167 omapdss_device_unregister(out);
5170 static int dsi_probe_of(struct dsi_data *dsi)
5172 struct device_node *node = dsi->dev->of_node;
5173 struct property *prop;
5177 struct device_node *ep;
5178 struct omap_dsi_pin_config pin_cfg;
5180 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
5184 prop = of_find_property(ep, "lanes", &len);
5186 dev_err(dsi->dev, "failed to find lane data\n");
5191 num_pins = len / sizeof(u32);
5193 if (num_pins < 4 || num_pins % 2 != 0 ||
5194 num_pins > dsi->num_lanes_supported * 2) {
5195 dev_err(dsi->dev, "bad number of lanes\n");
5200 r = of_property_read_u32_array(ep, "lanes", lane_arr, num_pins);
5202 dev_err(dsi->dev, "failed to read lane data\n");
5206 pin_cfg.num_pins = num_pins;
5207 for (i = 0; i < num_pins; ++i)
5208 pin_cfg.pins[i] = (int)lane_arr[i];
5210 r = dsi_configure_pins(&dsi->output, &pin_cfg);
5212 dev_err(dsi->dev, "failed to configure pins");
5225 static const struct dsi_of_data dsi_of_data_omap34xx = {
5226 .model = DSI_MODEL_OMAP3,
5227 .pll_hw = &dss_omap3_dsi_pll_hw,
5228 .modules = (const struct dsi_module_id_data[]) {
5229 { .address = 0x4804fc00, .id = 0, },
5232 .max_fck_freq = 173000000,
5233 .max_pll_lpdiv = (1 << 13) - 1,
5234 .quirks = DSI_QUIRK_REVERSE_TXCLKESC,
5237 static const struct dsi_of_data dsi_of_data_omap36xx = {
5238 .model = DSI_MODEL_OMAP3,
5239 .pll_hw = &dss_omap3_dsi_pll_hw,
5240 .modules = (const struct dsi_module_id_data[]) {
5241 { .address = 0x4804fc00, .id = 0, },
5244 .max_fck_freq = 173000000,
5245 .max_pll_lpdiv = (1 << 13) - 1,
5246 .quirks = DSI_QUIRK_PLL_PWR_BUG,
5249 static const struct dsi_of_data dsi_of_data_omap4 = {
5250 .model = DSI_MODEL_OMAP4,
5251 .pll_hw = &dss_omap4_dsi_pll_hw,
5252 .modules = (const struct dsi_module_id_data[]) {
5253 { .address = 0x58004000, .id = 0, },
5254 { .address = 0x58005000, .id = 1, },
5257 .max_fck_freq = 170000000,
5258 .max_pll_lpdiv = (1 << 13) - 1,
5259 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5263 static const struct dsi_of_data dsi_of_data_omap5 = {
5264 .model = DSI_MODEL_OMAP5,
5265 .pll_hw = &dss_omap5_dsi_pll_hw,
5266 .modules = (const struct dsi_module_id_data[]) {
5267 { .address = 0x58004000, .id = 0, },
5268 { .address = 0x58009000, .id = 1, },
5271 .max_fck_freq = 209250000,
5272 .max_pll_lpdiv = (1 << 13) - 1,
5273 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5274 | DSI_QUIRK_GNQ | DSI_QUIRK_PHY_DCC,
5277 static const struct of_device_id dsi_of_match[] = {
5278 { .compatible = "ti,omap3-dsi", .data = &dsi_of_data_omap36xx, },
5279 { .compatible = "ti,omap4-dsi", .data = &dsi_of_data_omap4, },
5280 { .compatible = "ti,omap5-dsi", .data = &dsi_of_data_omap5, },
5284 static const struct soc_device_attribute dsi_soc_devices[] = {
5285 { .machine = "OMAP3[45]*", .data = &dsi_of_data_omap34xx },
5286 { .machine = "AM35*", .data = &dsi_of_data_omap34xx },
5290 static int dsi_probe(struct platform_device *pdev)
5292 const struct soc_device_attribute *soc;
5293 const struct dsi_module_id_data *d;
5294 struct device *dev = &pdev->dev;
5295 struct dsi_data *dsi;
5296 struct resource *dsi_mem;
5297 struct resource *res;
5301 dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
5306 dev_set_drvdata(dev, dsi);
5308 spin_lock_init(&dsi->irq_lock);
5309 spin_lock_init(&dsi->errors_lock);
5312 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5313 spin_lock_init(&dsi->irq_stats_lock);
5314 dsi->irq_stats.last_reset = jiffies;
5317 mutex_init(&dsi->lock);
5318 sema_init(&dsi->bus_lock, 1);
5320 INIT_DEFERRABLE_WORK(&dsi->framedone_timeout_work,
5321 dsi_framedone_timeout_work_callback);
5323 #ifdef DSI_CATCH_MISSING_TE
5324 timer_setup(&dsi->te_timer, dsi_te_timeout, 0);
5327 dsi_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "proto");
5328 dsi->proto_base = devm_ioremap_resource(dev, dsi_mem);
5329 if (IS_ERR(dsi->proto_base))
5330 return PTR_ERR(dsi->proto_base);
5332 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
5333 dsi->phy_base = devm_ioremap_resource(dev, res);
5334 if (IS_ERR(dsi->phy_base))
5335 return PTR_ERR(dsi->phy_base);
5337 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
5338 dsi->pll_base = devm_ioremap_resource(dev, res);
5339 if (IS_ERR(dsi->pll_base))
5340 return PTR_ERR(dsi->pll_base);
5342 dsi->irq = platform_get_irq(pdev, 0);
5344 DSSERR("platform_get_irq failed\n");
5348 r = devm_request_irq(dev, dsi->irq, omap_dsi_irq_handler,
5349 IRQF_SHARED, dev_name(dev), dsi);
5351 DSSERR("request_irq failed\n");
5355 dsi->vdds_dsi_reg = devm_regulator_get(dev, "vdd");
5356 if (IS_ERR(dsi->vdds_dsi_reg)) {
5357 if (PTR_ERR(dsi->vdds_dsi_reg) != -EPROBE_DEFER)
5358 DSSERR("can't get DSI VDD regulator\n");
5359 return PTR_ERR(dsi->vdds_dsi_reg);
5362 soc = soc_device_match(dsi_soc_devices);
5364 dsi->data = soc->data;
5366 dsi->data = of_match_node(dsi_of_match, dev->of_node)->data;
5368 d = dsi->data->modules;
5369 while (d->address != 0 && d->address != dsi_mem->start)
5372 if (d->address == 0) {
5373 DSSERR("unsupported DSI module\n");
5377 dsi->module_id = d->id;
5379 if (dsi->data->model == DSI_MODEL_OMAP4 ||
5380 dsi->data->model == DSI_MODEL_OMAP5) {
5381 struct device_node *np;
5384 * The OMAP4/5 display DT bindings don't reference the padconf
5385 * syscon. Our only option to retrieve it is to find it by name.
5387 np = of_find_node_by_name(NULL,
5388 dsi->data->model == DSI_MODEL_OMAP4 ?
5389 "omap4_padconf_global" : "omap5_padconf_global");
5393 dsi->syscon = syscon_node_to_regmap(np);
5397 /* DSI VCs initialization */
5398 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
5399 dsi->vc[i].source = DSI_VC_SOURCE_L4;
5400 dsi->vc[i].dssdev = NULL;
5401 dsi->vc[i].vc_id = 0;
5404 r = dsi_get_clocks(dsi);
5408 pm_runtime_enable(dev);
5410 /* DSI on OMAP3 doesn't have register DSI_GNQ, set number
5411 * of data to 3 by default */
5412 if (dsi->data->quirks & DSI_QUIRK_GNQ)
5414 dsi->num_lanes_supported = 1 + REG_GET(dsi, DSI_GNQ, 11, 9);
5416 dsi->num_lanes_supported = 3;
5418 r = dsi_init_output(dsi);
5420 goto err_pm_disable;
5422 r = dsi_probe_of(dsi);
5424 DSSERR("Invalid DSI DT data\n");
5425 goto err_uninit_output;
5428 r = of_platform_populate(dev->of_node, NULL, NULL, dev);
5430 DSSERR("Failed to populate DSI child devices: %d\n", r);
5432 r = component_add(&pdev->dev, &dsi_component_ops);
5434 goto err_uninit_output;
5439 dsi_uninit_output(dsi);
5441 pm_runtime_disable(dev);
5445 static int dsi_remove(struct platform_device *pdev)
5447 struct dsi_data *dsi = platform_get_drvdata(pdev);
5449 component_del(&pdev->dev, &dsi_component_ops);
5451 dsi_uninit_output(dsi);
5453 pm_runtime_disable(&pdev->dev);
5455 if (dsi->vdds_dsi_reg != NULL && dsi->vdds_dsi_enabled) {
5456 regulator_disable(dsi->vdds_dsi_reg);
5457 dsi->vdds_dsi_enabled = false;
5463 static int dsi_runtime_suspend(struct device *dev)
5465 struct dsi_data *dsi = dev_get_drvdata(dev);
5467 dsi->is_enabled = false;
5468 /* ensure the irq handler sees the is_enabled value */
5470 /* wait for current handler to finish before turning the DSI off */
5471 synchronize_irq(dsi->irq);
5473 dispc_runtime_put(dsi->dss->dispc);
5478 static int dsi_runtime_resume(struct device *dev)
5480 struct dsi_data *dsi = dev_get_drvdata(dev);
5483 r = dispc_runtime_get(dsi->dss->dispc);
5487 dsi->is_enabled = true;
5488 /* ensure the irq handler sees the is_enabled value */
5494 static const struct dev_pm_ops dsi_pm_ops = {
5495 .runtime_suspend = dsi_runtime_suspend,
5496 .runtime_resume = dsi_runtime_resume,
5499 struct platform_driver omap_dsihw_driver = {
5501 .remove = dsi_remove,
5503 .name = "omapdss_dsi",
5505 .of_match_table = dsi_of_match,
5506 .suppress_bind_attrs = true,