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[deliverable/linux.git] / drivers / media / i2c / tc358743.c
1 /*
2 * tc358743 - Toshiba HDMI to CSI-2 bridge
3 *
4 * Copyright 2015 Cisco Systems, Inc. and/or its affiliates. All rights
5 * reserved.
6 *
7 * This program is free software; you may redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
12 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
13 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
15 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
16 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
17 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
18 * SOFTWARE.
19 *
20 */
21
22 /*
23 * References (c = chapter, p = page):
24 * REF_01 - Toshiba, TC358743XBG (H2C), Functional Specification, Rev 0.60
25 * REF_02 - Toshiba, TC358743XBG_HDMI-CSI_Tv11p_nm.xls
26 */
27
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/slab.h>
31 #include <linux/i2c.h>
32 #include <linux/clk.h>
33 #include <linux/delay.h>
34 #include <linux/gpio/consumer.h>
35 #include <linux/interrupt.h>
36 #include <linux/videodev2.h>
37 #include <linux/workqueue.h>
38 #include <linux/v4l2-dv-timings.h>
39 #include <linux/hdmi.h>
40 #include <media/v4l2-dv-timings.h>
41 #include <media/v4l2-device.h>
42 #include <media/v4l2-ctrls.h>
43 #include <media/v4l2-event.h>
44 #include <media/v4l2-of.h>
45 #include <media/tc358743.h>
46
47 #include "tc358743_regs.h"
48
49 static int debug;
50 module_param(debug, int, 0644);
51 MODULE_PARM_DESC(debug, "debug level (0-3)");
52
53 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver");
54 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>");
55 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>");
56 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>");
57 MODULE_LICENSE("GPL");
58
59 #define EDID_NUM_BLOCKS_MAX 8
60 #define EDID_BLOCK_SIZE 128
61
62 /* Max transfer size done by I2C transfer functions */
63 #define MAX_XFER_SIZE (EDID_NUM_BLOCKS_MAX * EDID_BLOCK_SIZE + 2)
64
65 static const struct v4l2_dv_timings_cap tc358743_timings_cap = {
66 .type = V4L2_DV_BT_656_1120,
67 /* keep this initialization for compatibility with GCC < 4.4.6 */
68 .reserved = { 0 },
69 /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */
70 V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 165000000,
71 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
72 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
73 V4L2_DV_BT_CAP_PROGRESSIVE |
74 V4L2_DV_BT_CAP_REDUCED_BLANKING |
75 V4L2_DV_BT_CAP_CUSTOM)
76 };
77
78 struct tc358743_state {
79 struct tc358743_platform_data pdata;
80 struct v4l2_of_bus_mipi_csi2 bus;
81 struct v4l2_subdev sd;
82 struct media_pad pad;
83 struct v4l2_ctrl_handler hdl;
84 struct i2c_client *i2c_client;
85 /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */
86 struct mutex confctl_mutex;
87
88 /* controls */
89 struct v4l2_ctrl *detect_tx_5v_ctrl;
90 struct v4l2_ctrl *audio_sampling_rate_ctrl;
91 struct v4l2_ctrl *audio_present_ctrl;
92
93 /* work queues */
94 struct workqueue_struct *work_queues;
95 struct delayed_work delayed_work_enable_hotplug;
96
97 /* edid */
98 u8 edid_blocks_written;
99
100 /* used by i2c_wr() */
101 u8 wr_data[MAX_XFER_SIZE];
102
103 struct v4l2_dv_timings timings;
104 u32 mbus_fmt_code;
105
106 struct gpio_desc *reset_gpio;
107 };
108
109 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
110 bool cable_connected);
111 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
112
113 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd)
114 {
115 return container_of(sd, struct tc358743_state, sd);
116 }
117
118 /* --------------- I2C --------------- */
119
120 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
121 {
122 struct tc358743_state *state = to_state(sd);
123 struct i2c_client *client = state->i2c_client;
124 int err;
125 u8 buf[2] = { reg >> 8, reg & 0xff };
126 struct i2c_msg msgs[] = {
127 {
128 .addr = client->addr,
129 .flags = 0,
130 .len = 2,
131 .buf = buf,
132 },
133 {
134 .addr = client->addr,
135 .flags = I2C_M_RD,
136 .len = n,
137 .buf = values,
138 },
139 };
140
141 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
142 if (err != ARRAY_SIZE(msgs)) {
143 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
144 __func__, reg, client->addr);
145 }
146 }
147
148 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
149 {
150 struct tc358743_state *state = to_state(sd);
151 struct i2c_client *client = state->i2c_client;
152 u8 *data = state->wr_data;
153 int err, i;
154 struct i2c_msg msg;
155
156 if ((2 + n) > sizeof(state->wr_data))
157 v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n",
158 reg, 2 + n);
159
160 msg.addr = client->addr;
161 msg.buf = data;
162 msg.len = 2 + n;
163 msg.flags = 0;
164
165 data[0] = reg >> 8;
166 data[1] = reg & 0xff;
167
168 for (i = 0; i < n; i++)
169 data[2 + i] = values[i];
170
171 err = i2c_transfer(client->adapter, &msg, 1);
172 if (err != 1) {
173 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n",
174 __func__, reg, client->addr);
175 return;
176 }
177
178 if (debug < 3)
179 return;
180
181 switch (n) {
182 case 1:
183 v4l2_info(sd, "I2C write 0x%04x = 0x%02x",
184 reg, data[2]);
185 break;
186 case 2:
187 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x",
188 reg, data[3], data[2]);
189 break;
190 case 4:
191 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x",
192 reg, data[5], data[4], data[3], data[2]);
193 break;
194 default:
195 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
196 n, reg);
197 }
198 }
199
200 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
201 {
202 u8 val;
203
204 i2c_rd(sd, reg, &val, 1);
205
206 return val;
207 }
208
209 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
210 {
211 i2c_wr(sd, reg, &val, 1);
212 }
213
214 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
215 u8 mask, u8 val)
216 {
217 i2c_wr8(sd, reg, (i2c_rd8(sd, reg) & mask) | val);
218 }
219
220 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
221 {
222 u16 val;
223
224 i2c_rd(sd, reg, (u8 *)&val, 2);
225
226 return val;
227 }
228
229 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
230 {
231 i2c_wr(sd, reg, (u8 *)&val, 2);
232 }
233
234 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
235 {
236 i2c_wr16(sd, reg, (i2c_rd16(sd, reg) & mask) | val);
237 }
238
239 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)
240 {
241 u32 val;
242
243 i2c_rd(sd, reg, (u8 *)&val, 4);
244
245 return val;
246 }
247
248 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val)
249 {
250 i2c_wr(sd, reg, (u8 *)&val, 4);
251 }
252
253 /* --------------- STATUS --------------- */
254
255 static inline bool is_hdmi(struct v4l2_subdev *sd)
256 {
257 return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
258 }
259
260 static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
261 {
262 return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
263 }
264
265 static inline bool no_signal(struct v4l2_subdev *sd)
266 {
267 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
268 }
269
270 static inline bool no_sync(struct v4l2_subdev *sd)
271 {
272 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);
273 }
274
275 static inline bool audio_present(struct v4l2_subdev *sd)
276 {
277 return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE;
278 }
279
280 static int get_audio_sampling_rate(struct v4l2_subdev *sd)
281 {
282 static const int code_to_rate[] = {
283 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
284 88200, 768000, 96000, 705600, 176400, 0, 192000, 0
285 };
286
287 /* Register FS_SET is not cleared when the cable is disconnected */
288 if (no_signal(sd))
289 return 0;
290
291 return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS];
292 }
293
294 static unsigned tc358743_num_csi_lanes_in_use(struct v4l2_subdev *sd)
295 {
296 return ((i2c_rd32(sd, CSI_CONTROL) & MASK_NOL) >> 1) + 1;
297 }
298
299 /* --------------- TIMINGS --------------- */
300
301 static inline unsigned fps(const struct v4l2_bt_timings *t)
302 {
303 if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
304 return 0;
305
306 return DIV_ROUND_CLOSEST((unsigned)t->pixelclock,
307 V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
308 }
309
310 static int tc358743_get_detected_timings(struct v4l2_subdev *sd,
311 struct v4l2_dv_timings *timings)
312 {
313 struct v4l2_bt_timings *bt = &timings->bt;
314 unsigned width, height, frame_width, frame_height, frame_interval, fps;
315
316 memset(timings, 0, sizeof(struct v4l2_dv_timings));
317
318 if (no_signal(sd)) {
319 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
320 return -ENOLINK;
321 }
322 if (no_sync(sd)) {
323 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__);
324 return -ENOLCK;
325 }
326
327 timings->type = V4L2_DV_BT_656_1120;
328 bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ?
329 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
330
331 width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) +
332 i2c_rd8(sd, DE_WIDTH_H_LO);
333 height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) +
334 i2c_rd8(sd, DE_WIDTH_V_LO);
335 frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) +
336 i2c_rd8(sd, H_SIZE_LO);
337 frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) +
338 i2c_rd8(sd, V_SIZE_LO)) / 2;
339 /* frame interval in milliseconds * 10
340 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */
341 frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) +
342 i2c_rd8(sd, FV_CNT_LO);
343 fps = (frame_interval > 0) ?
344 DIV_ROUND_CLOSEST(10000, frame_interval) : 0;
345
346 bt->width = width;
347 bt->height = height;
348 bt->vsync = frame_height - height;
349 bt->hsync = frame_width - width;
350 bt->pixelclock = frame_width * frame_height * fps;
351 if (bt->interlaced == V4L2_DV_INTERLACED) {
352 bt->height *= 2;
353 bt->il_vsync = bt->vsync + 1;
354 bt->pixelclock /= 2;
355 }
356
357 return 0;
358 }
359
360 /* --------------- HOTPLUG / HDCP / EDID --------------- */
361
362 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work)
363 {
364 struct delayed_work *dwork = to_delayed_work(work);
365 struct tc358743_state *state = container_of(dwork,
366 struct tc358743_state, delayed_work_enable_hotplug);
367 struct v4l2_subdev *sd = &state->sd;
368
369 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
370
371 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0);
372 }
373
374 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable)
375 {
376 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ?
377 "enable" : "disable");
378
379 i2c_wr8_and_or(sd, HDCP_REG1,
380 ~(MASK_AUTH_UNAUTH_SEL | MASK_AUTH_UNAUTH),
381 MASK_AUTH_UNAUTH_SEL_16_FRAMES | MASK_AUTH_UNAUTH_AUTO);
382
383 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET,
384 SET_AUTO_P3_RESET_FRAMES(0x0f));
385
386 /* HDCP is disabled by configuring the receiver as HDCP repeater. The
387 * repeater mode require software support to work, so HDCP
388 * authentication will fail.
389 */
390 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, enable ? KEY_RD_CMD : 0);
391 i2c_wr8_and_or(sd, HDCP_MODE, ~(MASK_AUTO_CLR | MASK_MODE_RST_TN),
392 enable ? (MASK_AUTO_CLR | MASK_MODE_RST_TN) : 0);
393
394 /* Apple MacBook Pro gen.8 has a bug that makes it freeze every fifth
395 * second when HDCP is disabled, but the MAX_EXCED bit is handled
396 * correctly and HDCP is disabled on the HDMI output.
397 */
398 i2c_wr8_and_or(sd, BSTATUS1, ~MASK_MAX_EXCED,
399 enable ? 0 : MASK_MAX_EXCED);
400 i2c_wr8_and_or(sd, BCAPS, ~(MASK_REPEATER | MASK_READY),
401 enable ? 0 : MASK_REPEATER | MASK_READY);
402 }
403
404 static void tc358743_disable_edid(struct v4l2_subdev *sd)
405 {
406 struct tc358743_state *state = to_state(sd);
407
408 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
409
410 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
411
412 /* DDC access to EDID is also disabled when hotplug is disabled. See
413 * register DDC_CTL */
414 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0);
415 }
416
417 static void tc358743_enable_edid(struct v4l2_subdev *sd)
418 {
419 struct tc358743_state *state = to_state(sd);
420
421 if (state->edid_blocks_written == 0) {
422 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__);
423 return;
424 }
425
426 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
427
428 /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when
429 * hotplug is enabled. See register DDC_CTL */
430 queue_delayed_work(state->work_queues,
431 &state->delayed_work_enable_hotplug, HZ / 10);
432
433 tc358743_enable_interrupts(sd, true);
434 tc358743_s_ctrl_detect_tx_5v(sd);
435 }
436
437 static void tc358743_erase_bksv(struct v4l2_subdev *sd)
438 {
439 int i;
440
441 for (i = 0; i < 5; i++)
442 i2c_wr8(sd, BKSV + i, 0);
443 }
444
445 /* --------------- AVI infoframe --------------- */
446
447 static void print_avi_infoframe(struct v4l2_subdev *sd)
448 {
449 struct i2c_client *client = v4l2_get_subdevdata(sd);
450 struct device *dev = &client->dev;
451 union hdmi_infoframe frame;
452 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
453
454 if (!is_hdmi(sd)) {
455 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
456 return;
457 }
458
459 i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI));
460
461 if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
462 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__);
463 return;
464 }
465
466 hdmi_infoframe_log(KERN_INFO, dev, &frame);
467 }
468
469 /* --------------- CTRLS --------------- */
470
471 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
472 {
473 struct tc358743_state *state = to_state(sd);
474
475 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
476 tx_5v_power_present(sd));
477 }
478
479 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
480 {
481 struct tc358743_state *state = to_state(sd);
482
483 return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl,
484 get_audio_sampling_rate(sd));
485 }
486
487 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd)
488 {
489 struct tc358743_state *state = to_state(sd);
490
491 return v4l2_ctrl_s_ctrl(state->audio_present_ctrl,
492 audio_present(sd));
493 }
494
495 static int tc358743_update_controls(struct v4l2_subdev *sd)
496 {
497 int ret = 0;
498
499 ret |= tc358743_s_ctrl_detect_tx_5v(sd);
500 ret |= tc358743_s_ctrl_audio_sampling_rate(sd);
501 ret |= tc358743_s_ctrl_audio_present(sd);
502
503 return ret;
504 }
505
506 /* --------------- INIT --------------- */
507
508 static void tc358743_reset_phy(struct v4l2_subdev *sd)
509 {
510 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
511
512 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0);
513 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL);
514 }
515
516 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask)
517 {
518 u16 sysctl = i2c_rd16(sd, SYSCTL);
519
520 i2c_wr16(sd, SYSCTL, sysctl | mask);
521 i2c_wr16(sd, SYSCTL, sysctl & ~mask);
522 }
523
524 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable)
525 {
526 i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP,
527 enable ? MASK_SLEEP : 0);
528 }
529
530 static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
531 {
532 struct tc358743_state *state = to_state(sd);
533
534 v4l2_dbg(3, debug, sd, "%s: %sable\n",
535 __func__, enable ? "en" : "dis");
536
537 if (enable) {
538 /* It is critical for CSI receiver to see lane transition
539 * LP11->HS. Set to non-continuous mode to enable clock lane
540 * LP11 state. */
541 i2c_wr32(sd, TXOPTIONCNTRL, 0);
542 /* Set to continuous mode to trigger LP11->HS transition */
543 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
544 /* Unmute video */
545 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE);
546 } else {
547 /* Mute video so that all data lanes go to LSP11 state.
548 * No data is output to CSI Tx block. */
549 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE);
550 }
551
552 mutex_lock(&state->confctl_mutex);
553 i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN),
554 enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0);
555 mutex_unlock(&state->confctl_mutex);
556 }
557
558 static void tc358743_set_pll(struct v4l2_subdev *sd)
559 {
560 struct tc358743_state *state = to_state(sd);
561 struct tc358743_platform_data *pdata = &state->pdata;
562 u16 pllctl0 = i2c_rd16(sd, PLLCTL0);
563 u16 pllctl1 = i2c_rd16(sd, PLLCTL1);
564 u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) |
565 SET_PLL_FBD(pdata->pll_fbd);
566 u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
567
568 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
569
570 /* Only rewrite when needed (new value or disabled), since rewriting
571 * triggers another format change event. */
572 if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) {
573 u16 pll_frs;
574
575 if (hsck > 500000000)
576 pll_frs = 0x0;
577 else if (hsck > 250000000)
578 pll_frs = 0x1;
579 else if (hsck > 125000000)
580 pll_frs = 0x2;
581 else
582 pll_frs = 0x3;
583
584 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__);
585 tc358743_sleep_mode(sd, true);
586 i2c_wr16(sd, PLLCTL0, pllctl0_new);
587 i2c_wr16_and_or(sd, PLLCTL1,
588 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN),
589 (SET_PLL_FRS(pll_frs) | MASK_RESETB |
590 MASK_PLL_EN));
591 udelay(10); /* REF_02, Sheet "Source HDMI" */
592 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN);
593 tc358743_sleep_mode(sd, false);
594 }
595 }
596
597 static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
598 {
599 struct tc358743_state *state = to_state(sd);
600 struct tc358743_platform_data *pdata = &state->pdata;
601 u32 sys_freq;
602 u32 lockdet_ref;
603 u16 fh_min;
604 u16 fh_max;
605
606 BUG_ON(!(pdata->refclk_hz == 26000000 ||
607 pdata->refclk_hz == 27000000 ||
608 pdata->refclk_hz == 42000000));
609
610 sys_freq = pdata->refclk_hz / 10000;
611 i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00ff);
612 i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xff00) >> 8);
613
614 i2c_wr8_and_or(sd, PHY_CTL0, ~MASK_PHY_SYSCLK_IND,
615 (pdata->refclk_hz == 42000000) ?
616 MASK_PHY_SYSCLK_IND : 0x0);
617
618 fh_min = pdata->refclk_hz / 100000;
619 i2c_wr8(sd, FH_MIN0, fh_min & 0x00ff);
620 i2c_wr8(sd, FH_MIN1, (fh_min & 0xff00) >> 8);
621
622 fh_max = (fh_min * 66) / 10;
623 i2c_wr8(sd, FH_MAX0, fh_max & 0x00ff);
624 i2c_wr8(sd, FH_MAX1, (fh_max & 0xff00) >> 8);
625
626 lockdet_ref = pdata->refclk_hz / 100;
627 i2c_wr8(sd, LOCKDET_REF0, lockdet_ref & 0x0000ff);
628 i2c_wr8(sd, LOCKDET_REF1, (lockdet_ref & 0x00ff00) >> 8);
629 i2c_wr8(sd, LOCKDET_REF2, (lockdet_ref & 0x0f0000) >> 16);
630
631 i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD,
632 (pdata->refclk_hz == 27000000) ?
633 MASK_NCO_F0_MOD_27MHZ : 0x0);
634 }
635
636 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
637 {
638 struct tc358743_state *state = to_state(sd);
639
640 switch (state->mbus_fmt_code) {
641 case MEDIA_BUS_FMT_UYVY8_1X16:
642 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__);
643 i2c_wr8_and_or(sd, VOUT_SET2,
644 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
645 MASK_SEL422 | MASK_VOUT_422FIL_100);
646 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
647 MASK_VOUT_COLOR_601_YCBCR_LIMITED);
648 mutex_lock(&state->confctl_mutex);
649 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
650 MASK_YCBCRFMT_422_8_BIT);
651 mutex_unlock(&state->confctl_mutex);
652 break;
653 case MEDIA_BUS_FMT_RGB888_1X24:
654 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__);
655 i2c_wr8_and_or(sd, VOUT_SET2,
656 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
657 0x00);
658 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
659 MASK_VOUT_COLOR_RGB_FULL);
660 mutex_lock(&state->confctl_mutex);
661 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
662 mutex_unlock(&state->confctl_mutex);
663 break;
664 default:
665 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n",
666 __func__, state->mbus_fmt_code);
667 }
668 }
669
670 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd)
671 {
672 struct tc358743_state *state = to_state(sd);
673 struct v4l2_bt_timings *bt = &state->timings.bt;
674 struct tc358743_platform_data *pdata = &state->pdata;
675 u32 bits_pr_pixel =
676 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24;
677 u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel;
678 u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
679
680 return DIV_ROUND_UP(bps, bps_pr_lane);
681 }
682
683 static void tc358743_set_csi(struct v4l2_subdev *sd)
684 {
685 struct tc358743_state *state = to_state(sd);
686 struct tc358743_platform_data *pdata = &state->pdata;
687 unsigned lanes = tc358743_num_csi_lanes_needed(sd);
688
689 v4l2_dbg(3, debug, sd, "%s:\n", __func__);
690
691 tc358743_reset(sd, MASK_CTXRST);
692
693 if (lanes < 1)
694 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE);
695 if (lanes < 1)
696 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE);
697 if (lanes < 2)
698 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE);
699 if (lanes < 3)
700 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE);
701 if (lanes < 4)
702 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE);
703
704 i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt);
705 i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt);
706 i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt);
707 i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt);
708 i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt);
709 i2c_wr32(sd, TWAKEUP, pdata->twakeup);
710 i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt);
711 i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt);
712 i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt);
713
714 i2c_wr32(sd, HSTXVREGEN,
715 ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) |
716 ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) |
717 ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) |
718 ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) |
719 ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0));
720
721 i2c_wr32(sd, TXOPTIONCNTRL, (state->bus.flags &
722 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) ? MASK_CONTCLKMODE : 0);
723 i2c_wr32(sd, STARTCNTRL, MASK_START);
724 i2c_wr32(sd, CSI_START, MASK_STRT);
725
726 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
727 MASK_ADDRESS_CSI_CONTROL |
728 MASK_CSI_MODE |
729 MASK_TXHSMD |
730 ((lanes == 4) ? MASK_NOL_4 :
731 (lanes == 3) ? MASK_NOL_3 :
732 (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1));
733
734 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
735 MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK |
736 MASK_WCER | MASK_INER);
737
738 i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR |
739 MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK);
740
741 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
742 MASK_ADDRESS_CSI_INT_ENA | MASK_INTER);
743 }
744
745 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd)
746 {
747 struct tc358743_state *state = to_state(sd);
748 struct tc358743_platform_data *pdata = &state->pdata;
749
750 /* Default settings from REF_02, sheet "Source HDMI"
751 * and custom settings as platform data */
752 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0);
753 i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) |
754 SET_FREQ_RANGE_MODE_CYCLES(1));
755 i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn,
756 (pdata->hdmi_phy_auto_reset_tmds_detected ?
757 MASK_PHY_AUTO_RST2 : 0) |
758 (pdata->hdmi_phy_auto_reset_tmds_in_range ?
759 MASK_PHY_AUTO_RST3 : 0) |
760 (pdata->hdmi_phy_auto_reset_tmds_valid ?
761 MASK_PHY_AUTO_RST4 : 0));
762 i2c_wr8(sd, PHY_BIAS, 0x40);
763 i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a));
764 i2c_wr8(sd, AVM_CTL, 45);
765 i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V,
766 pdata->hdmi_detection_delay << 4);
767 i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST),
768 (pdata->hdmi_phy_auto_reset_hsync_out_of_range ?
769 MASK_H_PI_RST : 0) |
770 (pdata->hdmi_phy_auto_reset_vsync_out_of_range ?
771 MASK_V_PI_RST : 0));
772 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY);
773 }
774
775 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd)
776 {
777 struct tc358743_state *state = to_state(sd);
778
779 /* Default settings from REF_02, sheet "Source HDMI" */
780 i2c_wr8(sd, FORCE_MUTE, 0x00);
781 i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 |
782 MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 |
783 MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0);
784 i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9);
785 i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2);
786 i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500));
787 i2c_wr8(sd, FS_MUTE, 0x00);
788 i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE);
789 i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE);
790 i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM);
791 i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM);
792 i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S);
793 i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100));
794
795 mutex_lock(&state->confctl_mutex);
796 i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 |
797 MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX);
798 mutex_unlock(&state->confctl_mutex);
799 }
800
801 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd)
802 {
803 /* Default settings from REF_02, sheet "Source HDMI" */
804 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE |
805 MASK_ACP_INT_MODE | MASK_VS_INT_MODE |
806 MASK_SPD_INT_MODE | MASK_MS_INT_MODE |
807 MASK_AUD_INT_MODE | MASK_AVI_INT_MODE);
808 i2c_wr8(sd, NO_PKT_LIMIT, 0x2c);
809 i2c_wr8(sd, NO_PKT_CLR, 0x53);
810 i2c_wr8(sd, ERR_PK_LIMIT, 0x01);
811 i2c_wr8(sd, NO_PKT_LIMIT2, 0x30);
812 i2c_wr8(sd, NO_GDB_LIMIT, 0x10);
813 }
814
815 static void tc358743_initial_setup(struct v4l2_subdev *sd)
816 {
817 struct tc358743_state *state = to_state(sd);
818 struct tc358743_platform_data *pdata = &state->pdata;
819
820 /* CEC and IR are not supported by this driver */
821 i2c_wr16_and_or(sd, SYSCTL, ~(MASK_CECRST | MASK_IRRST),
822 (MASK_CECRST | MASK_IRRST));
823
824 tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
825 tc358743_sleep_mode(sd, false);
826
827 i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
828
829 tc358743_set_ref_clk(sd);
830
831 i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE,
832 pdata->ddc5v_delay & MASK_DDC5V_MODE);
833 i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC);
834
835 tc358743_set_hdmi_phy(sd);
836 tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp);
837 tc358743_set_hdmi_audio(sd);
838 tc358743_set_hdmi_info_frame_mode(sd);
839
840 /* All CE and IT formats are detected as RGB full range in DVI mode */
841 i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0);
842
843 i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE,
844 MASK_VOUTCOLORMODE_AUTO);
845 i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
846 }
847
848 /* --------------- IRQ --------------- */
849
850 static void tc358743_format_change(struct v4l2_subdev *sd)
851 {
852 struct tc358743_state *state = to_state(sd);
853 struct v4l2_dv_timings timings;
854 const struct v4l2_event tc358743_ev_fmt = {
855 .type = V4L2_EVENT_SOURCE_CHANGE,
856 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
857 };
858
859 if (tc358743_get_detected_timings(sd, &timings)) {
860 enable_stream(sd, false);
861
862 v4l2_dbg(1, debug, sd, "%s: Format changed. No signal\n",
863 __func__);
864 } else {
865 if (!v4l2_match_dv_timings(&state->timings, &timings, 0))
866 enable_stream(sd, false);
867
868 v4l2_print_dv_timings(sd->name,
869 "tc358743_format_change: Format changed. New format: ",
870 &timings, false);
871 }
872
873 v4l2_subdev_notify_event(sd, &tc358743_ev_fmt);
874 }
875
876 static void tc358743_init_interrupts(struct v4l2_subdev *sd)
877 {
878 u16 i;
879
880 /* clear interrupt status registers */
881 for (i = SYS_INT; i <= KEY_INT; i++)
882 i2c_wr8(sd, i, 0xff);
883
884 i2c_wr16(sd, INTSTATUS, 0xffff);
885 }
886
887 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
888 bool cable_connected)
889 {
890 v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__,
891 cable_connected);
892
893 if (cable_connected) {
894 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET |
895 MASK_M_HDMI_DET) & 0xff);
896 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG);
897 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
898 MASK_M_AF_UNLOCK) & 0xff);
899 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END);
900 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG);
901 } else {
902 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff);
903 i2c_wr8(sd, CLK_INTM, 0xff);
904 i2c_wr8(sd, CBIT_INTM, 0xff);
905 i2c_wr8(sd, AUDIO_INTM, 0xff);
906 i2c_wr8(sd, MISC_INTM, 0xff);
907 }
908 }
909
910 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd,
911 bool *handled)
912 {
913 u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM);
914 u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask;
915
916 i2c_wr8(sd, AUDIO_INT, audio_int);
917
918 v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int);
919
920 tc358743_s_ctrl_audio_sampling_rate(sd);
921 tc358743_s_ctrl_audio_present(sd);
922 }
923
924 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled)
925 {
926 v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR));
927
928 i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER);
929 }
930
931 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd,
932 bool *handled)
933 {
934 u8 misc_int_mask = i2c_rd8(sd, MISC_INTM);
935 u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask;
936
937 i2c_wr8(sd, MISC_INT, misc_int);
938
939 v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int);
940
941 if (misc_int & MASK_I_SYNC_CHG) {
942 /* Reset the HDMI PHY to try to trigger proper lock on the
943 * incoming video format. Erase BKSV to prevent that old keys
944 * are used when a new source is connected. */
945 if (no_sync(sd) || no_signal(sd)) {
946 tc358743_reset_phy(sd);
947 tc358743_erase_bksv(sd);
948 }
949
950 tc358743_format_change(sd);
951
952 misc_int &= ~MASK_I_SYNC_CHG;
953 if (handled)
954 *handled = true;
955 }
956
957 if (misc_int) {
958 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n",
959 __func__, misc_int);
960 }
961 }
962
963 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd,
964 bool *handled)
965 {
966 u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);
967 u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask;
968
969 i2c_wr8(sd, CBIT_INT, cbit_int);
970
971 v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int);
972
973 if (cbit_int & MASK_I_CBIT_FS) {
974
975 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n",
976 __func__);
977 tc358743_s_ctrl_audio_sampling_rate(sd);
978
979 cbit_int &= ~MASK_I_CBIT_FS;
980 if (handled)
981 *handled = true;
982 }
983
984 if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) {
985
986 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n",
987 __func__);
988 tc358743_s_ctrl_audio_present(sd);
989
990 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK);
991 if (handled)
992 *handled = true;
993 }
994
995 if (cbit_int) {
996 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n",
997 __func__, cbit_int);
998 }
999 }
1000
1001 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled)
1002 {
1003 u8 clk_int_mask = i2c_rd8(sd, CLK_INTM);
1004 u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask;
1005
1006 /* Bit 7 and bit 6 are set even when they are masked */
1007 i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG);
1008
1009 v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int);
1010
1011 if (clk_int & (MASK_I_IN_DE_CHG)) {
1012
1013 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n",
1014 __func__);
1015
1016 /* If the source switch to a new resolution with the same pixel
1017 * frequency as the existing (e.g. 1080p25 -> 720p50), the
1018 * I_SYNC_CHG interrupt is not always triggered, while the
1019 * I_IN_DE_CHG interrupt seems to work fine. Format change
1020 * notifications are only sent when the signal is stable to
1021 * reduce the number of notifications. */
1022 if (!no_signal(sd) && !no_sync(sd))
1023 tc358743_format_change(sd);
1024
1025 clk_int &= ~(MASK_I_IN_DE_CHG);
1026 if (handled)
1027 *handled = true;
1028 }
1029
1030 if (clk_int) {
1031 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n",
1032 __func__, clk_int);
1033 }
1034 }
1035
1036 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled)
1037 {
1038 struct tc358743_state *state = to_state(sd);
1039 u8 sys_int_mask = i2c_rd8(sd, SYS_INTM);
1040 u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask;
1041
1042 i2c_wr8(sd, SYS_INT, sys_int);
1043
1044 v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int);
1045
1046 if (sys_int & MASK_I_DDC) {
1047 bool tx_5v = tx_5v_power_present(sd);
1048
1049 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n",
1050 __func__, tx_5v ? "yes" : "no");
1051
1052 if (tx_5v) {
1053 tc358743_enable_edid(sd);
1054 } else {
1055 tc358743_enable_interrupts(sd, false);
1056 tc358743_disable_edid(sd);
1057 memset(&state->timings, 0, sizeof(state->timings));
1058 tc358743_erase_bksv(sd);
1059 tc358743_update_controls(sd);
1060 }
1061
1062 sys_int &= ~MASK_I_DDC;
1063 if (handled)
1064 *handled = true;
1065 }
1066
1067 if (sys_int & MASK_I_DVI) {
1068 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n",
1069 __func__);
1070
1071 /* Reset the HDMI PHY to try to trigger proper lock on the
1072 * incoming video format. Erase BKSV to prevent that old keys
1073 * are used when a new source is connected. */
1074 if (no_sync(sd) || no_signal(sd)) {
1075 tc358743_reset_phy(sd);
1076 tc358743_erase_bksv(sd);
1077 }
1078
1079 sys_int &= ~MASK_I_DVI;
1080 if (handled)
1081 *handled = true;
1082 }
1083
1084 if (sys_int & MASK_I_HDMI) {
1085 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n",
1086 __func__);
1087
1088 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */
1089 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON);
1090
1091 sys_int &= ~MASK_I_HDMI;
1092 if (handled)
1093 *handled = true;
1094 }
1095
1096 if (sys_int) {
1097 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n",
1098 __func__, sys_int);
1099 }
1100 }
1101
1102 /* --------------- CORE OPS --------------- */
1103
1104 static int tc358743_log_status(struct v4l2_subdev *sd)
1105 {
1106 struct tc358743_state *state = to_state(sd);
1107 struct v4l2_dv_timings timings;
1108 uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
1109 uint16_t sysctl = i2c_rd16(sd, SYSCTL);
1110 u8 vi_status3 = i2c_rd8(sd, VI_STATUS3);
1111 const int deep_color_mode[4] = { 8, 10, 12, 16 };
1112 static const char * const input_color_space[] = {
1113 "RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)",
1114 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
1115 "NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"};
1116
1117 v4l2_info(sd, "-----Chip status-----\n");
1118 v4l2_info(sd, "Chip ID: 0x%02x\n",
1119 (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8);
1120 v4l2_info(sd, "Chip revision: 0x%02x\n",
1121 i2c_rd16(sd, CHIPID) & MASK_REVID);
1122 v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n",
1123 !!(sysctl & MASK_IRRST),
1124 !!(sysctl & MASK_CECRST),
1125 !!(sysctl & MASK_CTXRST),
1126 !!(sysctl & MASK_HDMIRST));
1127 v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off");
1128 v4l2_info(sd, "Cable detected (+5V power): %s\n",
1129 hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no");
1130 v4l2_info(sd, "DDC lines enabled: %s\n",
1131 (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ?
1132 "yes" : "no");
1133 v4l2_info(sd, "Hotplug enabled: %s\n",
1134 (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ?
1135 "yes" : "no");
1136 v4l2_info(sd, "CEC enabled: %s\n",
1137 (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no");
1138 v4l2_info(sd, "-----Signal status-----\n");
1139 v4l2_info(sd, "TMDS signal detected: %s\n",
1140 hdmi_sys_status & MASK_S_TMDS ? "yes" : "no");
1141 v4l2_info(sd, "Stable sync signal: %s\n",
1142 hdmi_sys_status & MASK_S_SYNC ? "yes" : "no");
1143 v4l2_info(sd, "PHY PLL locked: %s\n",
1144 hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no");
1145 v4l2_info(sd, "PHY DE detected: %s\n",
1146 hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no");
1147
1148 if (tc358743_get_detected_timings(sd, &timings)) {
1149 v4l2_info(sd, "No video detected\n");
1150 } else {
1151 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings,
1152 true);
1153 }
1154 v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings,
1155 true);
1156
1157 v4l2_info(sd, "-----CSI-TX status-----\n");
1158 v4l2_info(sd, "Lanes needed: %d\n",
1159 tc358743_num_csi_lanes_needed(sd));
1160 v4l2_info(sd, "Lanes in use: %d\n",
1161 tc358743_num_csi_lanes_in_use(sd));
1162 v4l2_info(sd, "Waiting for particular sync signal: %s\n",
1163 (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ?
1164 "yes" : "no");
1165 v4l2_info(sd, "Transmit mode: %s\n",
1166 (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ?
1167 "yes" : "no");
1168 v4l2_info(sd, "Receive mode: %s\n",
1169 (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ?
1170 "yes" : "no");
1171 v4l2_info(sd, "Stopped: %s\n",
1172 (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
1173 "yes" : "no");
1174 v4l2_info(sd, "Color space: %s\n",
1175 state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
1176 "YCbCr 422 16-bit" :
1177 state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
1178 "RGB 888 24-bit" : "Unsupported");
1179
1180 v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
1181 v4l2_info(sd, "HDCP encrypted content: %s\n",
1182 hdmi_sys_status & MASK_S_HDCP ? "yes" : "no");
1183 v4l2_info(sd, "Input color space: %s %s range\n",
1184 input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1],
1185 (vi_status3 & MASK_LIMITED) ? "limited" : "full");
1186 if (!is_hdmi(sd))
1187 return 0;
1188 v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" :
1189 "off");
1190 v4l2_info(sd, "Deep color mode: %d-bits per channel\n",
1191 deep_color_mode[(i2c_rd8(sd, VI_STATUS1) &
1192 MASK_S_DEEPCOLOR) >> 2]);
1193 print_avi_infoframe(sd);
1194
1195 return 0;
1196 }
1197
1198 #ifdef CONFIG_VIDEO_ADV_DEBUG
1199 static void tc358743_print_register_map(struct v4l2_subdev *sd)
1200 {
1201 v4l2_info(sd, "0x0000–0x00FF: Global Control Register\n");
1202 v4l2_info(sd, "0x0100–0x01FF: CSI2-TX PHY Register\n");
1203 v4l2_info(sd, "0x0200–0x03FF: CSI2-TX PPI Register\n");
1204 v4l2_info(sd, "0x0400–0x05FF: Reserved\n");
1205 v4l2_info(sd, "0x0600–0x06FF: CEC Register\n");
1206 v4l2_info(sd, "0x0700–0x84FF: Reserved\n");
1207 v4l2_info(sd, "0x8500–0x85FF: HDMIRX System Control Register\n");
1208 v4l2_info(sd, "0x8600–0x86FF: HDMIRX Audio Control Register\n");
1209 v4l2_info(sd, "0x8700–0x87FF: HDMIRX InfoFrame packet data Register\n");
1210 v4l2_info(sd, "0x8800–0x88FF: HDMIRX HDCP Port Register\n");
1211 v4l2_info(sd, "0x8900–0x89FF: HDMIRX Video Output Port & 3D Register\n");
1212 v4l2_info(sd, "0x8A00–0x8BFF: Reserved\n");
1213 v4l2_info(sd, "0x8C00–0x8FFF: HDMIRX EDID-RAM (1024bytes)\n");
1214 v4l2_info(sd, "0x9000–0x90FF: HDMIRX GBD Extraction Control\n");
1215 v4l2_info(sd, "0x9100–0x92FF: HDMIRX GBD RAM read\n");
1216 v4l2_info(sd, "0x9300- : Reserved\n");
1217 }
1218
1219 static int tc358743_get_reg_size(u16 address)
1220 {
1221 /* REF_01 p. 66-72 */
1222 if (address <= 0x00ff)
1223 return 2;
1224 else if ((address >= 0x0100) && (address <= 0x06FF))
1225 return 4;
1226 else if ((address >= 0x0700) && (address <= 0x84ff))
1227 return 2;
1228 else
1229 return 1;
1230 }
1231
1232 static int tc358743_g_register(struct v4l2_subdev *sd,
1233 struct v4l2_dbg_register *reg)
1234 {
1235 if (reg->reg > 0xffff) {
1236 tc358743_print_register_map(sd);
1237 return -EINVAL;
1238 }
1239
1240 reg->size = tc358743_get_reg_size(reg->reg);
1241
1242 i2c_rd(sd, reg->reg, (u8 *)&reg->val, reg->size);
1243
1244 return 0;
1245 }
1246
1247 static int tc358743_s_register(struct v4l2_subdev *sd,
1248 const struct v4l2_dbg_register *reg)
1249 {
1250 if (reg->reg > 0xffff) {
1251 tc358743_print_register_map(sd);
1252 return -EINVAL;
1253 }
1254
1255 /* It should not be possible for the user to enable HDCP with a simple
1256 * v4l2-dbg command.
1257 *
1258 * DO NOT REMOVE THIS unless all other issues with HDCP have been
1259 * resolved.
1260 */
1261 if (reg->reg == HDCP_MODE ||
1262 reg->reg == HDCP_REG1 ||
1263 reg->reg == HDCP_REG2 ||
1264 reg->reg == HDCP_REG3 ||
1265 reg->reg == BCAPS)
1266 return 0;
1267
1268 i2c_wr(sd, (u16)reg->reg, (u8 *)&reg->val,
1269 tc358743_get_reg_size(reg->reg));
1270
1271 return 0;
1272 }
1273 #endif
1274
1275 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1276 {
1277 u16 intstatus = i2c_rd16(sd, INTSTATUS);
1278
1279 v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus);
1280
1281 if (intstatus & MASK_HDMI_INT) {
1282 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0);
1283 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1);
1284
1285 if (hdmi_int0 & MASK_I_MISC)
1286 tc358743_hdmi_misc_int_handler(sd, handled);
1287 if (hdmi_int1 & MASK_I_CBIT)
1288 tc358743_hdmi_cbit_int_handler(sd, handled);
1289 if (hdmi_int1 & MASK_I_CLK)
1290 tc358743_hdmi_clk_int_handler(sd, handled);
1291 if (hdmi_int1 & MASK_I_SYS)
1292 tc358743_hdmi_sys_int_handler(sd, handled);
1293 if (hdmi_int1 & MASK_I_AUD)
1294 tc358743_hdmi_audio_int_handler(sd, handled);
1295
1296 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT);
1297 intstatus &= ~MASK_HDMI_INT;
1298 }
1299
1300 if (intstatus & MASK_CSI_INT) {
1301 u32 csi_int = i2c_rd32(sd, CSI_INT);
1302
1303 if (csi_int & MASK_INTER)
1304 tc358743_csi_err_int_handler(sd, handled);
1305
1306 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT);
1307 intstatus &= ~MASK_CSI_INT;
1308 }
1309
1310 intstatus = i2c_rd16(sd, INTSTATUS);
1311 if (intstatus) {
1312 v4l2_dbg(1, debug, sd,
1313 "%s: Unhandled IntStatus interrupts: 0x%02x\n",
1314 __func__, intstatus);
1315 }
1316
1317 return 0;
1318 }
1319
1320 static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
1321 {
1322 struct tc358743_state *state = dev_id;
1323 bool handled;
1324
1325 tc358743_isr(&state->sd, 0, &handled);
1326
1327 return handled ? IRQ_HANDLED : IRQ_NONE;
1328 }
1329
1330 static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1331 struct v4l2_event_subscription *sub)
1332 {
1333 switch (sub->type) {
1334 case V4L2_EVENT_SOURCE_CHANGE:
1335 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
1336 case V4L2_EVENT_CTRL:
1337 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
1338 default:
1339 return -EINVAL;
1340 }
1341 }
1342
1343 /* --------------- VIDEO OPS --------------- */
1344
1345 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
1346 {
1347 *status = 0;
1348 *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
1349 *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0;
1350
1351 v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
1352
1353 return 0;
1354 }
1355
1356 static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
1357 struct v4l2_dv_timings *timings)
1358 {
1359 struct tc358743_state *state = to_state(sd);
1360
1361 if (!timings)
1362 return -EINVAL;
1363
1364 if (debug)
1365 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ",
1366 timings, false);
1367
1368 if (v4l2_match_dv_timings(&state->timings, timings, 0)) {
1369 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1370 return 0;
1371 }
1372
1373 if (!v4l2_valid_dv_timings(timings,
1374 &tc358743_timings_cap, NULL, NULL)) {
1375 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1376 return -ERANGE;
1377 }
1378
1379 state->timings = *timings;
1380
1381 enable_stream(sd, false);
1382 tc358743_set_pll(sd);
1383 tc358743_set_csi(sd);
1384
1385 return 0;
1386 }
1387
1388 static int tc358743_g_dv_timings(struct v4l2_subdev *sd,
1389 struct v4l2_dv_timings *timings)
1390 {
1391 struct tc358743_state *state = to_state(sd);
1392
1393 *timings = state->timings;
1394
1395 return 0;
1396 }
1397
1398 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd,
1399 struct v4l2_enum_dv_timings *timings)
1400 {
1401 if (timings->pad != 0)
1402 return -EINVAL;
1403
1404 return v4l2_enum_dv_timings_cap(timings,
1405 &tc358743_timings_cap, NULL, NULL);
1406 }
1407
1408 static int tc358743_query_dv_timings(struct v4l2_subdev *sd,
1409 struct v4l2_dv_timings *timings)
1410 {
1411 int ret;
1412
1413 ret = tc358743_get_detected_timings(sd, timings);
1414 if (ret)
1415 return ret;
1416
1417 if (debug)
1418 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ",
1419 timings, false);
1420
1421 if (!v4l2_valid_dv_timings(timings,
1422 &tc358743_timings_cap, NULL, NULL)) {
1423 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1424 return -ERANGE;
1425 }
1426
1427 return 0;
1428 }
1429
1430 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd,
1431 struct v4l2_dv_timings_cap *cap)
1432 {
1433 if (cap->pad != 0)
1434 return -EINVAL;
1435
1436 *cap = tc358743_timings_cap;
1437
1438 return 0;
1439 }
1440
1441 static int tc358743_g_mbus_config(struct v4l2_subdev *sd,
1442 struct v4l2_mbus_config *cfg)
1443 {
1444 cfg->type = V4L2_MBUS_CSI2;
1445
1446 /* Support for non-continuous CSI-2 clock is missing in the driver */
1447 cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
1448
1449 switch (tc358743_num_csi_lanes_in_use(sd)) {
1450 case 1:
1451 cfg->flags |= V4L2_MBUS_CSI2_1_LANE;
1452 break;
1453 case 2:
1454 cfg->flags |= V4L2_MBUS_CSI2_2_LANE;
1455 break;
1456 case 3:
1457 cfg->flags |= V4L2_MBUS_CSI2_3_LANE;
1458 break;
1459 case 4:
1460 cfg->flags |= V4L2_MBUS_CSI2_4_LANE;
1461 break;
1462 default:
1463 return -EINVAL;
1464 }
1465
1466 return 0;
1467 }
1468
1469 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
1470 {
1471 enable_stream(sd, enable);
1472
1473 return 0;
1474 }
1475
1476 /* --------------- PAD OPS --------------- */
1477
1478 static int tc358743_get_fmt(struct v4l2_subdev *sd,
1479 struct v4l2_subdev_pad_config *cfg,
1480 struct v4l2_subdev_format *format)
1481 {
1482 struct tc358743_state *state = to_state(sd);
1483 u8 vi_rep = i2c_rd8(sd, VI_REP);
1484
1485 if (format->pad != 0)
1486 return -EINVAL;
1487
1488 format->format.code = state->mbus_fmt_code;
1489 format->format.width = state->timings.bt.width;
1490 format->format.height = state->timings.bt.height;
1491 format->format.field = V4L2_FIELD_NONE;
1492
1493 switch (vi_rep & MASK_VOUT_COLOR_SEL) {
1494 case MASK_VOUT_COLOR_RGB_FULL:
1495 case MASK_VOUT_COLOR_RGB_LIMITED:
1496 format->format.colorspace = V4L2_COLORSPACE_SRGB;
1497 break;
1498 case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
1499 case MASK_VOUT_COLOR_601_YCBCR_FULL:
1500 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
1501 break;
1502 case MASK_VOUT_COLOR_709_YCBCR_FULL:
1503 case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
1504 format->format.colorspace = V4L2_COLORSPACE_REC709;
1505 break;
1506 default:
1507 format->format.colorspace = 0;
1508 break;
1509 }
1510
1511 return 0;
1512 }
1513
1514 static int tc358743_set_fmt(struct v4l2_subdev *sd,
1515 struct v4l2_subdev_pad_config *cfg,
1516 struct v4l2_subdev_format *format)
1517 {
1518 struct tc358743_state *state = to_state(sd);
1519
1520 u32 code = format->format.code; /* is overwritten by get_fmt */
1521 int ret = tc358743_get_fmt(sd, cfg, format);
1522
1523 format->format.code = code;
1524
1525 if (ret)
1526 return ret;
1527
1528 switch (code) {
1529 case MEDIA_BUS_FMT_RGB888_1X24:
1530 case MEDIA_BUS_FMT_UYVY8_1X16:
1531 break;
1532 default:
1533 return -EINVAL;
1534 }
1535
1536 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1537 return 0;
1538
1539 state->mbus_fmt_code = format->format.code;
1540
1541 enable_stream(sd, false);
1542 tc358743_set_pll(sd);
1543 tc358743_set_csi(sd);
1544 tc358743_set_csi_color_space(sd);
1545
1546 return 0;
1547 }
1548
1549 static int tc358743_g_edid(struct v4l2_subdev *sd,
1550 struct v4l2_subdev_edid *edid)
1551 {
1552 struct tc358743_state *state = to_state(sd);
1553
1554 if (edid->pad != 0)
1555 return -EINVAL;
1556
1557 if (edid->start_block == 0 && edid->blocks == 0) {
1558 edid->blocks = state->edid_blocks_written;
1559 return 0;
1560 }
1561
1562 if (state->edid_blocks_written == 0)
1563 return -ENODATA;
1564
1565 if (edid->start_block >= state->edid_blocks_written ||
1566 edid->blocks == 0)
1567 return -EINVAL;
1568
1569 if (edid->start_block + edid->blocks > state->edid_blocks_written)
1570 edid->blocks = state->edid_blocks_written - edid->start_block;
1571
1572 i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid,
1573 edid->blocks * EDID_BLOCK_SIZE);
1574
1575 return 0;
1576 }
1577
1578 static int tc358743_s_edid(struct v4l2_subdev *sd,
1579 struct v4l2_subdev_edid *edid)
1580 {
1581 struct tc358743_state *state = to_state(sd);
1582 u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
1583
1584 v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
1585 __func__, edid->pad, edid->start_block, edid->blocks);
1586
1587 if (edid->pad != 0)
1588 return -EINVAL;
1589
1590 if (edid->start_block != 0)
1591 return -EINVAL;
1592
1593 if (edid->blocks > EDID_NUM_BLOCKS_MAX) {
1594 edid->blocks = EDID_NUM_BLOCKS_MAX;
1595 return -E2BIG;
1596 }
1597
1598 tc358743_disable_edid(sd);
1599
1600 i2c_wr8(sd, EDID_LEN1, edid_len & 0xff);
1601 i2c_wr8(sd, EDID_LEN2, edid_len >> 8);
1602
1603 if (edid->blocks == 0) {
1604 state->edid_blocks_written = 0;
1605 return 0;
1606 }
1607
1608 i2c_wr(sd, EDID_RAM, edid->edid, edid_len);
1609
1610 state->edid_blocks_written = edid->blocks;
1611
1612 if (tx_5v_power_present(sd))
1613 tc358743_enable_edid(sd);
1614
1615 return 0;
1616 }
1617
1618 /* -------------------------------------------------------------------------- */
1619
1620 static const struct v4l2_subdev_core_ops tc358743_core_ops = {
1621 .log_status = tc358743_log_status,
1622 #ifdef CONFIG_VIDEO_ADV_DEBUG
1623 .g_register = tc358743_g_register,
1624 .s_register = tc358743_s_register,
1625 #endif
1626 .interrupt_service_routine = tc358743_isr,
1627 .subscribe_event = tc358743_subscribe_event,
1628 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1629 };
1630
1631 static const struct v4l2_subdev_video_ops tc358743_video_ops = {
1632 .g_input_status = tc358743_g_input_status,
1633 .s_dv_timings = tc358743_s_dv_timings,
1634 .g_dv_timings = tc358743_g_dv_timings,
1635 .query_dv_timings = tc358743_query_dv_timings,
1636 .g_mbus_config = tc358743_g_mbus_config,
1637 .s_stream = tc358743_s_stream,
1638 };
1639
1640 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
1641 .set_fmt = tc358743_set_fmt,
1642 .get_fmt = tc358743_get_fmt,
1643 .get_edid = tc358743_g_edid,
1644 .set_edid = tc358743_s_edid,
1645 .enum_dv_timings = tc358743_enum_dv_timings,
1646 .dv_timings_cap = tc358743_dv_timings_cap,
1647 };
1648
1649 static const struct v4l2_subdev_ops tc358743_ops = {
1650 .core = &tc358743_core_ops,
1651 .video = &tc358743_video_ops,
1652 .pad = &tc358743_pad_ops,
1653 };
1654
1655 /* --------------- CUSTOM CTRLS --------------- */
1656
1657 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = {
1658 .id = TC358743_CID_AUDIO_SAMPLING_RATE,
1659 .name = "Audio sampling rate",
1660 .type = V4L2_CTRL_TYPE_INTEGER,
1661 .min = 0,
1662 .max = 768000,
1663 .step = 1,
1664 .def = 0,
1665 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1666 };
1667
1668 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = {
1669 .id = TC358743_CID_AUDIO_PRESENT,
1670 .name = "Audio present",
1671 .type = V4L2_CTRL_TYPE_BOOLEAN,
1672 .min = 0,
1673 .max = 1,
1674 .step = 1,
1675 .def = 0,
1676 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1677 };
1678
1679 /* --------------- PROBE / REMOVE --------------- */
1680
1681 #ifdef CONFIG_OF
1682 static void tc358743_gpio_reset(struct tc358743_state *state)
1683 {
1684 usleep_range(5000, 10000);
1685 gpiod_set_value(state->reset_gpio, 1);
1686 usleep_range(1000, 2000);
1687 gpiod_set_value(state->reset_gpio, 0);
1688 msleep(20);
1689 }
1690
1691 static int tc358743_probe_of(struct tc358743_state *state)
1692 {
1693 struct device *dev = &state->i2c_client->dev;
1694 struct v4l2_of_endpoint *endpoint;
1695 struct device_node *ep;
1696 struct clk *refclk;
1697 u32 bps_pr_lane;
1698 int ret = -EINVAL;
1699
1700 refclk = devm_clk_get(dev, "refclk");
1701 if (IS_ERR(refclk)) {
1702 if (PTR_ERR(refclk) != -EPROBE_DEFER)
1703 dev_err(dev, "failed to get refclk: %ld\n",
1704 PTR_ERR(refclk));
1705 return PTR_ERR(refclk);
1706 }
1707
1708 ep = of_graph_get_next_endpoint(dev->of_node, NULL);
1709 if (!ep) {
1710 dev_err(dev, "missing endpoint node\n");
1711 return -EINVAL;
1712 }
1713
1714 endpoint = v4l2_of_alloc_parse_endpoint(ep);
1715 if (IS_ERR(endpoint)) {
1716 dev_err(dev, "failed to parse endpoint\n");
1717 return PTR_ERR(endpoint);
1718 }
1719
1720 if (endpoint->bus_type != V4L2_MBUS_CSI2 ||
1721 endpoint->bus.mipi_csi2.num_data_lanes == 0 ||
1722 endpoint->nr_of_link_frequencies == 0) {
1723 dev_err(dev, "missing CSI-2 properties in endpoint\n");
1724 goto free_endpoint;
1725 }
1726
1727 state->bus = endpoint->bus.mipi_csi2;
1728
1729 clk_prepare_enable(refclk);
1730
1731 state->pdata.refclk_hz = clk_get_rate(refclk);
1732 state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS;
1733 state->pdata.enable_hdcp = false;
1734 /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */
1735 state->pdata.fifo_level = 16;
1736 /*
1737 * The PLL input clock is obtained by dividing refclk by pll_prd.
1738 * It must be between 6 MHz and 40 MHz, lower frequency is better.
1739 */
1740 switch (state->pdata.refclk_hz) {
1741 case 26000000:
1742 case 27000000:
1743 case 42000000:
1744 state->pdata.pll_prd = state->pdata.refclk_hz / 6000000;
1745 break;
1746 default:
1747 dev_err(dev, "unsupported refclk rate: %u Hz\n",
1748 state->pdata.refclk_hz);
1749 goto disable_clk;
1750 }
1751
1752 /*
1753 * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps.
1754 * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60.
1755 */
1756 bps_pr_lane = 2 * endpoint->link_frequencies[0];
1757 if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) {
1758 dev_err(dev, "unsupported bps per lane: %u bps\n", bps_pr_lane);
1759 goto disable_clk;
1760 }
1761
1762 /* The CSI speed per lane is refclk / pll_prd * pll_fbd */
1763 state->pdata.pll_fbd = bps_pr_lane /
1764 state->pdata.refclk_hz * state->pdata.pll_prd;
1765
1766 /*
1767 * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz
1768 * link frequency). In principle it should be possible to calculate
1769 * them based on link frequency and resolution.
1770 */
1771 if (bps_pr_lane != 594000000U)
1772 dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
1773 state->pdata.lineinitcnt = 0xe80;
1774 state->pdata.lptxtimecnt = 0x003;
1775 /* tclk-preparecnt: 3, tclk-zerocnt: 20 */
1776 state->pdata.tclk_headercnt = 0x1403;
1777 state->pdata.tclk_trailcnt = 0x00;
1778 /* ths-preparecnt: 3, ths-zerocnt: 1 */
1779 state->pdata.ths_headercnt = 0x0103;
1780 state->pdata.twakeup = 0x4882;
1781 state->pdata.tclk_postcnt = 0x008;
1782 state->pdata.ths_trailcnt = 0x2;
1783 state->pdata.hstxvregcnt = 0;
1784
1785 state->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
1786 if (IS_ERR(state->reset_gpio)) {
1787 dev_err(dev, "failed to get reset gpio\n");
1788 ret = PTR_ERR(state->reset_gpio);
1789 goto disable_clk;
1790 }
1791
1792 tc358743_gpio_reset(state);
1793
1794 ret = 0;
1795 goto free_endpoint;
1796
1797 disable_clk:
1798 clk_disable_unprepare(refclk);
1799 free_endpoint:
1800 v4l2_of_free_endpoint(endpoint);
1801 return ret;
1802 }
1803 #else
1804 static inline int tc358743_probe_of(struct tc358743_state *state)
1805 {
1806 return -ENODEV;
1807 }
1808 #endif
1809
1810 static int tc358743_probe(struct i2c_client *client,
1811 const struct i2c_device_id *id)
1812 {
1813 static struct v4l2_dv_timings default_timing =
1814 V4L2_DV_BT_CEA_640X480P59_94;
1815 struct tc358743_state *state;
1816 struct tc358743_platform_data *pdata = client->dev.platform_data;
1817 struct v4l2_subdev *sd;
1818 int err;
1819
1820 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1821 return -EIO;
1822 v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n",
1823 client->addr << 1, client->adapter->name);
1824
1825 state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state),
1826 GFP_KERNEL);
1827 if (!state)
1828 return -ENOMEM;
1829
1830 state->i2c_client = client;
1831
1832 /* platform data */
1833 if (pdata) {
1834 state->pdata = *pdata;
1835 state->bus.flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
1836 } else {
1837 err = tc358743_probe_of(state);
1838 if (err == -ENODEV)
1839 v4l_err(client, "No platform data!\n");
1840 if (err)
1841 return err;
1842 }
1843
1844 sd = &state->sd;
1845 v4l2_i2c_subdev_init(sd, client, &tc358743_ops);
1846 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
1847
1848 /* i2c access */
1849 if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
1850 v4l2_info(sd, "not a TC358743 on address 0x%x\n",
1851 client->addr << 1);
1852 return -ENODEV;
1853 }
1854
1855 /* control handlers */
1856 v4l2_ctrl_handler_init(&state->hdl, 3);
1857
1858 /* private controls */
1859 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL,
1860 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
1861
1862 /* custom controls */
1863 state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
1864 &tc358743_ctrl_audio_sampling_rate, NULL);
1865
1866 state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
1867 &tc358743_ctrl_audio_present, NULL);
1868
1869 sd->ctrl_handler = &state->hdl;
1870 if (state->hdl.error) {
1871 err = state->hdl.error;
1872 goto err_hdl;
1873 }
1874
1875 if (tc358743_update_controls(sd)) {
1876 err = -ENODEV;
1877 goto err_hdl;
1878 }
1879
1880 /* work queues */
1881 state->work_queues = create_singlethread_workqueue(client->name);
1882 if (!state->work_queues) {
1883 v4l2_err(sd, "Could not create work queue\n");
1884 err = -ENOMEM;
1885 goto err_hdl;
1886 }
1887
1888 state->pad.flags = MEDIA_PAD_FL_SOURCE;
1889 err = media_entity_init(&sd->entity, 1, &state->pad, 0);
1890 if (err < 0)
1891 goto err_hdl;
1892
1893 sd->dev = &client->dev;
1894 err = v4l2_async_register_subdev(sd);
1895 if (err < 0)
1896 goto err_hdl;
1897
1898 mutex_init(&state->confctl_mutex);
1899
1900 INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
1901 tc358743_delayed_work_enable_hotplug);
1902
1903 tc358743_initial_setup(sd);
1904
1905 tc358743_s_dv_timings(sd, &default_timing);
1906
1907 state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
1908 tc358743_set_csi_color_space(sd);
1909
1910 tc358743_init_interrupts(sd);
1911
1912 if (state->i2c_client->irq) {
1913 err = devm_request_threaded_irq(&client->dev,
1914 state->i2c_client->irq,
1915 NULL, tc358743_irq_handler,
1916 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
1917 "tc358743", state);
1918 if (err)
1919 goto err_work_queues;
1920 }
1921
1922 tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
1923 i2c_wr16(sd, INTMASK, ~(MASK_HDMI_MSK | MASK_CSI_MSK) & 0xffff);
1924
1925 err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
1926 if (err)
1927 goto err_work_queues;
1928
1929 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
1930 client->addr << 1, client->adapter->name);
1931
1932 return 0;
1933
1934 err_work_queues:
1935 cancel_delayed_work(&state->delayed_work_enable_hotplug);
1936 destroy_workqueue(state->work_queues);
1937 mutex_destroy(&state->confctl_mutex);
1938 err_hdl:
1939 media_entity_cleanup(&sd->entity);
1940 v4l2_ctrl_handler_free(&state->hdl);
1941 return err;
1942 }
1943
1944 static int tc358743_remove(struct i2c_client *client)
1945 {
1946 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1947 struct tc358743_state *state = to_state(sd);
1948
1949 cancel_delayed_work(&state->delayed_work_enable_hotplug);
1950 destroy_workqueue(state->work_queues);
1951 v4l2_async_unregister_subdev(sd);
1952 v4l2_device_unregister_subdev(sd);
1953 mutex_destroy(&state->confctl_mutex);
1954 media_entity_cleanup(&sd->entity);
1955 v4l2_ctrl_handler_free(&state->hdl);
1956
1957 return 0;
1958 }
1959
1960 static struct i2c_device_id tc358743_id[] = {
1961 {"tc358743", 0},
1962 {}
1963 };
1964
1965 MODULE_DEVICE_TABLE(i2c, tc358743_id);
1966
1967 static struct i2c_driver tc358743_driver = {
1968 .driver = {
1969 .owner = THIS_MODULE,
1970 .name = "tc358743",
1971 },
1972 .probe = tc358743_probe,
1973 .remove = tc358743_remove,
1974 .id_table = tc358743_id,
1975 };
1976
1977 module_i2c_driver(tc358743_driver);
Linux kernel - Deliverables
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