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[media] tc358743: register v4l2 asynchronous subdevice
[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/delay.h>
33 #include <linux/videodev2.h>
34 #include <linux/workqueue.h>
35 #include <linux/v4l2-dv-timings.h>
36 #include <linux/hdmi.h>
37 #include <media/v4l2-dv-timings.h>
38 #include <media/v4l2-device.h>
39 #include <media/v4l2-ctrls.h>
40 #include <media/tc358743.h>
41
42 #include "tc358743_regs.h"
43
44 static int debug;
45 module_param(debug, int, 0644);
46 MODULE_PARM_DESC(debug, "debug level (0-3)");
47
48 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver");
49 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>");
50 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>");
51 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>");
52 MODULE_LICENSE("GPL");
53
54 #define EDID_NUM_BLOCKS_MAX 8
55 #define EDID_BLOCK_SIZE 128
56
57 static const struct v4l2_dv_timings_cap tc358743_timings_cap = {
58 .type = V4L2_DV_BT_656_1120,
59 /* keep this initialization for compatibility with GCC < 4.4.6 */
60 .reserved = { 0 },
61 /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */
62 V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 165000000,
63 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
64 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
65 V4L2_DV_BT_CAP_PROGRESSIVE |
66 V4L2_DV_BT_CAP_REDUCED_BLANKING |
67 V4L2_DV_BT_CAP_CUSTOM)
68 };
69
70 struct tc358743_state {
71 struct tc358743_platform_data pdata;
72 struct v4l2_subdev sd;
73 struct media_pad pad;
74 struct v4l2_ctrl_handler hdl;
75 struct i2c_client *i2c_client;
76 /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */
77 struct mutex confctl_mutex;
78
79 /* controls */
80 struct v4l2_ctrl *detect_tx_5v_ctrl;
81 struct v4l2_ctrl *audio_sampling_rate_ctrl;
82 struct v4l2_ctrl *audio_present_ctrl;
83
84 /* work queues */
85 struct workqueue_struct *work_queues;
86 struct delayed_work delayed_work_enable_hotplug;
87
88 /* edid */
89 u8 edid_blocks_written;
90
91 struct v4l2_dv_timings timings;
92 u32 mbus_fmt_code;
93 };
94
95 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
96 bool cable_connected);
97 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
98
99 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd)
100 {
101 return container_of(sd, struct tc358743_state, sd);
102 }
103
104 /* --------------- I2C --------------- */
105
106 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
107 {
108 struct tc358743_state *state = to_state(sd);
109 struct i2c_client *client = state->i2c_client;
110 int err;
111 u8 buf[2] = { reg >> 8, reg & 0xff };
112 struct i2c_msg msgs[] = {
113 {
114 .addr = client->addr,
115 .flags = 0,
116 .len = 2,
117 .buf = buf,
118 },
119 {
120 .addr = client->addr,
121 .flags = I2C_M_RD,
122 .len = n,
123 .buf = values,
124 },
125 };
126
127 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
128 if (err != ARRAY_SIZE(msgs)) {
129 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
130 __func__, reg, client->addr);
131 }
132 }
133
134 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
135 {
136 struct tc358743_state *state = to_state(sd);
137 struct i2c_client *client = state->i2c_client;
138 int err, i;
139 struct i2c_msg msg;
140 u8 data[2 + n];
141
142 msg.addr = client->addr;
143 msg.buf = data;
144 msg.len = 2 + n;
145 msg.flags = 0;
146
147 data[0] = reg >> 8;
148 data[1] = reg & 0xff;
149
150 for (i = 0; i < n; i++)
151 data[2 + i] = values[i];
152
153 err = i2c_transfer(client->adapter, &msg, 1);
154 if (err != 1) {
155 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n",
156 __func__, reg, client->addr);
157 return;
158 }
159
160 if (debug < 3)
161 return;
162
163 switch (n) {
164 case 1:
165 v4l2_info(sd, "I2C write 0x%04x = 0x%02x",
166 reg, data[2]);
167 break;
168 case 2:
169 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x",
170 reg, data[3], data[2]);
171 break;
172 case 4:
173 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x",
174 reg, data[5], data[4], data[3], data[2]);
175 break;
176 default:
177 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
178 n, reg);
179 }
180 }
181
182 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
183 {
184 u8 val;
185
186 i2c_rd(sd, reg, &val, 1);
187
188 return val;
189 }
190
191 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
192 {
193 i2c_wr(sd, reg, &val, 1);
194 }
195
196 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
197 u8 mask, u8 val)
198 {
199 i2c_wr8(sd, reg, (i2c_rd8(sd, reg) & mask) | val);
200 }
201
202 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
203 {
204 u16 val;
205
206 i2c_rd(sd, reg, (u8 *)&val, 2);
207
208 return val;
209 }
210
211 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
212 {
213 i2c_wr(sd, reg, (u8 *)&val, 2);
214 }
215
216 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
217 {
218 i2c_wr16(sd, reg, (i2c_rd16(sd, reg) & mask) | val);
219 }
220
221 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)
222 {
223 u32 val;
224
225 i2c_rd(sd, reg, (u8 *)&val, 4);
226
227 return val;
228 }
229
230 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val)
231 {
232 i2c_wr(sd, reg, (u8 *)&val, 4);
233 }
234
235 /* --------------- STATUS --------------- */
236
237 static inline bool is_hdmi(struct v4l2_subdev *sd)
238 {
239 return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
240 }
241
242 static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
243 {
244 return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
245 }
246
247 static inline bool no_signal(struct v4l2_subdev *sd)
248 {
249 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
250 }
251
252 static inline bool no_sync(struct v4l2_subdev *sd)
253 {
254 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);
255 }
256
257 static inline bool audio_present(struct v4l2_subdev *sd)
258 {
259 return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE;
260 }
261
262 static int get_audio_sampling_rate(struct v4l2_subdev *sd)
263 {
264 static const int code_to_rate[] = {
265 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
266 88200, 768000, 96000, 705600, 176400, 0, 192000, 0
267 };
268
269 /* Register FS_SET is not cleared when the cable is disconnected */
270 if (no_signal(sd))
271 return 0;
272
273 return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS];
274 }
275
276 static unsigned tc358743_num_csi_lanes_in_use(struct v4l2_subdev *sd)
277 {
278 return ((i2c_rd32(sd, CSI_CONTROL) & MASK_NOL) >> 1) + 1;
279 }
280
281 /* --------------- TIMINGS --------------- */
282
283 static inline unsigned fps(const struct v4l2_bt_timings *t)
284 {
285 if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
286 return 0;
287
288 return DIV_ROUND_CLOSEST((unsigned)t->pixelclock,
289 V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
290 }
291
292 static int tc358743_get_detected_timings(struct v4l2_subdev *sd,
293 struct v4l2_dv_timings *timings)
294 {
295 struct v4l2_bt_timings *bt = &timings->bt;
296 unsigned width, height, frame_width, frame_height, frame_interval, fps;
297
298 memset(timings, 0, sizeof(struct v4l2_dv_timings));
299
300 if (no_signal(sd)) {
301 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
302 return -ENOLINK;
303 }
304 if (no_sync(sd)) {
305 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__);
306 return -ENOLCK;
307 }
308
309 timings->type = V4L2_DV_BT_656_1120;
310 bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ?
311 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
312
313 width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) +
314 i2c_rd8(sd, DE_WIDTH_H_LO);
315 height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) +
316 i2c_rd8(sd, DE_WIDTH_V_LO);
317 frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) +
318 i2c_rd8(sd, H_SIZE_LO);
319 frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) +
320 i2c_rd8(sd, V_SIZE_LO)) / 2;
321 /* frame interval in milliseconds * 10
322 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */
323 frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) +
324 i2c_rd8(sd, FV_CNT_LO);
325 fps = (frame_interval > 0) ?
326 DIV_ROUND_CLOSEST(10000, frame_interval) : 0;
327
328 bt->width = width;
329 bt->height = height;
330 bt->vsync = frame_height - height;
331 bt->hsync = frame_width - width;
332 bt->pixelclock = frame_width * frame_height * fps;
333 if (bt->interlaced == V4L2_DV_INTERLACED) {
334 bt->height *= 2;
335 bt->il_vsync = bt->vsync + 1;
336 bt->pixelclock /= 2;
337 }
338
339 return 0;
340 }
341
342 /* --------------- HOTPLUG / HDCP / EDID --------------- */
343
344 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work)
345 {
346 struct delayed_work *dwork = to_delayed_work(work);
347 struct tc358743_state *state = container_of(dwork,
348 struct tc358743_state, delayed_work_enable_hotplug);
349 struct v4l2_subdev *sd = &state->sd;
350
351 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
352
353 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0);
354 }
355
356 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable)
357 {
358 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ?
359 "enable" : "disable");
360
361 i2c_wr8_and_or(sd, HDCP_REG1,
362 ~(MASK_AUTH_UNAUTH_SEL | MASK_AUTH_UNAUTH),
363 MASK_AUTH_UNAUTH_SEL_16_FRAMES | MASK_AUTH_UNAUTH_AUTO);
364
365 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET,
366 SET_AUTO_P3_RESET_FRAMES(0x0f));
367
368 /* HDCP is disabled by configuring the receiver as HDCP repeater. The
369 * repeater mode require software support to work, so HDCP
370 * authentication will fail.
371 */
372 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, enable ? KEY_RD_CMD : 0);
373 i2c_wr8_and_or(sd, HDCP_MODE, ~(MASK_AUTO_CLR | MASK_MODE_RST_TN),
374 enable ? (MASK_AUTO_CLR | MASK_MODE_RST_TN) : 0);
375
376 /* Apple MacBook Pro gen.8 has a bug that makes it freeze every fifth
377 * second when HDCP is disabled, but the MAX_EXCED bit is handled
378 * correctly and HDCP is disabled on the HDMI output.
379 */
380 i2c_wr8_and_or(sd, BSTATUS1, ~MASK_MAX_EXCED,
381 enable ? 0 : MASK_MAX_EXCED);
382 i2c_wr8_and_or(sd, BCAPS, ~(MASK_REPEATER | MASK_READY),
383 enable ? 0 : MASK_REPEATER | MASK_READY);
384 }
385
386 static void tc358743_disable_edid(struct v4l2_subdev *sd)
387 {
388 struct tc358743_state *state = to_state(sd);
389
390 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
391
392 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
393
394 /* DDC access to EDID is also disabled when hotplug is disabled. See
395 * register DDC_CTL */
396 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0);
397 }
398
399 static void tc358743_enable_edid(struct v4l2_subdev *sd)
400 {
401 struct tc358743_state *state = to_state(sd);
402
403 if (state->edid_blocks_written == 0) {
404 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__);
405 return;
406 }
407
408 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
409
410 /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when
411 * hotplug is enabled. See register DDC_CTL */
412 queue_delayed_work(state->work_queues,
413 &state->delayed_work_enable_hotplug, HZ / 10);
414
415 tc358743_enable_interrupts(sd, true);
416 tc358743_s_ctrl_detect_tx_5v(sd);
417 }
418
419 static void tc358743_erase_bksv(struct v4l2_subdev *sd)
420 {
421 int i;
422
423 for (i = 0; i < 5; i++)
424 i2c_wr8(sd, BKSV + i, 0);
425 }
426
427 /* --------------- AVI infoframe --------------- */
428
429 static void print_avi_infoframe(struct v4l2_subdev *sd)
430 {
431 struct i2c_client *client = v4l2_get_subdevdata(sd);
432 struct device *dev = &client->dev;
433 union hdmi_infoframe frame;
434 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
435
436 if (!is_hdmi(sd)) {
437 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
438 return;
439 }
440
441 i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI));
442
443 if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
444 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__);
445 return;
446 }
447
448 hdmi_infoframe_log(KERN_INFO, dev, &frame);
449 }
450
451 /* --------------- CTRLS --------------- */
452
453 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
454 {
455 struct tc358743_state *state = to_state(sd);
456
457 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
458 tx_5v_power_present(sd));
459 }
460
461 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
462 {
463 struct tc358743_state *state = to_state(sd);
464
465 return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl,
466 get_audio_sampling_rate(sd));
467 }
468
469 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd)
470 {
471 struct tc358743_state *state = to_state(sd);
472
473 return v4l2_ctrl_s_ctrl(state->audio_present_ctrl,
474 audio_present(sd));
475 }
476
477 static int tc358743_update_controls(struct v4l2_subdev *sd)
478 {
479 int ret = 0;
480
481 ret |= tc358743_s_ctrl_detect_tx_5v(sd);
482 ret |= tc358743_s_ctrl_audio_sampling_rate(sd);
483 ret |= tc358743_s_ctrl_audio_present(sd);
484
485 return ret;
486 }
487
488 /* --------------- INIT --------------- */
489
490 static void tc358743_reset_phy(struct v4l2_subdev *sd)
491 {
492 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
493
494 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0);
495 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL);
496 }
497
498 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask)
499 {
500 u16 sysctl = i2c_rd16(sd, SYSCTL);
501
502 i2c_wr16(sd, SYSCTL, sysctl | mask);
503 i2c_wr16(sd, SYSCTL, sysctl & ~mask);
504 }
505
506 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable)
507 {
508 i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP,
509 enable ? MASK_SLEEP : 0);
510 }
511
512 static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
513 {
514 struct tc358743_state *state = to_state(sd);
515
516 v4l2_dbg(3, debug, sd, "%s: %sable\n",
517 __func__, enable ? "en" : "dis");
518
519 if (enable) {
520 /* It is critical for CSI receiver to see lane transition
521 * LP11->HS. Set to non-continuous mode to enable clock lane
522 * LP11 state. */
523 i2c_wr32(sd, TXOPTIONCNTRL, 0);
524 /* Set to continuous mode to trigger LP11->HS transition */
525 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
526 /* Unmute video */
527 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE);
528 } else {
529 /* Mute video so that all data lanes go to LSP11 state.
530 * No data is output to CSI Tx block. */
531 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE);
532 }
533
534 mutex_lock(&state->confctl_mutex);
535 i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN),
536 enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0);
537 mutex_unlock(&state->confctl_mutex);
538 }
539
540 static void tc358743_set_pll(struct v4l2_subdev *sd)
541 {
542 struct tc358743_state *state = to_state(sd);
543 struct tc358743_platform_data *pdata = &state->pdata;
544 u16 pllctl0 = i2c_rd16(sd, PLLCTL0);
545 u16 pllctl1 = i2c_rd16(sd, PLLCTL1);
546 u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) |
547 SET_PLL_FBD(pdata->pll_fbd);
548 u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
549
550 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
551
552 /* Only rewrite when needed (new value or disabled), since rewriting
553 * triggers another format change event. */
554 if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) {
555 u16 pll_frs;
556
557 if (hsck > 500000000)
558 pll_frs = 0x0;
559 else if (hsck > 250000000)
560 pll_frs = 0x1;
561 else if (hsck > 125000000)
562 pll_frs = 0x2;
563 else
564 pll_frs = 0x3;
565
566 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__);
567 tc358743_sleep_mode(sd, true);
568 i2c_wr16(sd, PLLCTL0, pllctl0_new);
569 i2c_wr16_and_or(sd, PLLCTL1,
570 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN),
571 (SET_PLL_FRS(pll_frs) | MASK_RESETB |
572 MASK_PLL_EN));
573 udelay(10); /* REF_02, Sheet "Source HDMI" */
574 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN);
575 tc358743_sleep_mode(sd, false);
576 }
577 }
578
579 static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
580 {
581 struct tc358743_state *state = to_state(sd);
582 struct tc358743_platform_data *pdata = &state->pdata;
583 u32 sys_freq;
584 u32 lockdet_ref;
585 u16 fh_min;
586 u16 fh_max;
587
588 BUG_ON(!(pdata->refclk_hz == 26000000 ||
589 pdata->refclk_hz == 27000000 ||
590 pdata->refclk_hz == 42000000));
591
592 sys_freq = pdata->refclk_hz / 10000;
593 i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00ff);
594 i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xff00) >> 8);
595
596 i2c_wr8_and_or(sd, PHY_CTL0, ~MASK_PHY_SYSCLK_IND,
597 (pdata->refclk_hz == 42000000) ?
598 MASK_PHY_SYSCLK_IND : 0x0);
599
600 fh_min = pdata->refclk_hz / 100000;
601 i2c_wr8(sd, FH_MIN0, fh_min & 0x00ff);
602 i2c_wr8(sd, FH_MIN1, (fh_min & 0xff00) >> 8);
603
604 fh_max = (fh_min * 66) / 10;
605 i2c_wr8(sd, FH_MAX0, fh_max & 0x00ff);
606 i2c_wr8(sd, FH_MAX1, (fh_max & 0xff00) >> 8);
607
608 lockdet_ref = pdata->refclk_hz / 100;
609 i2c_wr8(sd, LOCKDET_REF0, lockdet_ref & 0x0000ff);
610 i2c_wr8(sd, LOCKDET_REF1, (lockdet_ref & 0x00ff00) >> 8);
611 i2c_wr8(sd, LOCKDET_REF2, (lockdet_ref & 0x0f0000) >> 16);
612
613 i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD,
614 (pdata->refclk_hz == 27000000) ?
615 MASK_NCO_F0_MOD_27MHZ : 0x0);
616 }
617
618 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
619 {
620 struct tc358743_state *state = to_state(sd);
621
622 switch (state->mbus_fmt_code) {
623 case MEDIA_BUS_FMT_UYVY8_1X16:
624 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__);
625 i2c_wr8_and_or(sd, VOUT_SET2,
626 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
627 MASK_SEL422 | MASK_VOUT_422FIL_100);
628 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
629 MASK_VOUT_COLOR_601_YCBCR_LIMITED);
630 mutex_lock(&state->confctl_mutex);
631 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
632 MASK_YCBCRFMT_422_8_BIT);
633 mutex_unlock(&state->confctl_mutex);
634 break;
635 case MEDIA_BUS_FMT_RGB888_1X24:
636 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__);
637 i2c_wr8_and_or(sd, VOUT_SET2,
638 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
639 0x00);
640 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
641 MASK_VOUT_COLOR_RGB_FULL);
642 mutex_lock(&state->confctl_mutex);
643 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
644 mutex_unlock(&state->confctl_mutex);
645 break;
646 default:
647 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n",
648 __func__, state->mbus_fmt_code);
649 }
650 }
651
652 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd)
653 {
654 struct tc358743_state *state = to_state(sd);
655 struct v4l2_bt_timings *bt = &state->timings.bt;
656 struct tc358743_platform_data *pdata = &state->pdata;
657 u32 bits_pr_pixel =
658 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24;
659 u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel;
660 u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
661
662 return DIV_ROUND_UP(bps, bps_pr_lane);
663 }
664
665 static void tc358743_set_csi(struct v4l2_subdev *sd)
666 {
667 struct tc358743_state *state = to_state(sd);
668 struct tc358743_platform_data *pdata = &state->pdata;
669 unsigned lanes = tc358743_num_csi_lanes_needed(sd);
670
671 v4l2_dbg(3, debug, sd, "%s:\n", __func__);
672
673 tc358743_reset(sd, MASK_CTXRST);
674
675 if (lanes < 1)
676 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE);
677 if (lanes < 1)
678 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE);
679 if (lanes < 2)
680 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE);
681 if (lanes < 3)
682 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE);
683 if (lanes < 4)
684 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE);
685
686 i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt);
687 i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt);
688 i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt);
689 i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt);
690 i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt);
691 i2c_wr32(sd, TWAKEUP, pdata->twakeup);
692 i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt);
693 i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt);
694 i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt);
695
696 i2c_wr32(sd, HSTXVREGEN,
697 ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) |
698 ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) |
699 ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) |
700 ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) |
701 ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0));
702
703 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
704 i2c_wr32(sd, STARTCNTRL, MASK_START);
705 i2c_wr32(sd, CSI_START, MASK_STRT);
706
707 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
708 MASK_ADDRESS_CSI_CONTROL |
709 MASK_CSI_MODE |
710 MASK_TXHSMD |
711 ((lanes == 4) ? MASK_NOL_4 :
712 (lanes == 3) ? MASK_NOL_3 :
713 (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1));
714
715 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
716 MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK |
717 MASK_WCER | MASK_INER);
718
719 i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR |
720 MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK);
721
722 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
723 MASK_ADDRESS_CSI_INT_ENA | MASK_INTER);
724 }
725
726 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd)
727 {
728 struct tc358743_state *state = to_state(sd);
729 struct tc358743_platform_data *pdata = &state->pdata;
730
731 /* Default settings from REF_02, sheet "Source HDMI"
732 * and custom settings as platform data */
733 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0);
734 i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) |
735 SET_FREQ_RANGE_MODE_CYCLES(1));
736 i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn,
737 (pdata->hdmi_phy_auto_reset_tmds_detected ?
738 MASK_PHY_AUTO_RST2 : 0) |
739 (pdata->hdmi_phy_auto_reset_tmds_in_range ?
740 MASK_PHY_AUTO_RST3 : 0) |
741 (pdata->hdmi_phy_auto_reset_tmds_valid ?
742 MASK_PHY_AUTO_RST4 : 0));
743 i2c_wr8(sd, PHY_BIAS, 0x40);
744 i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a));
745 i2c_wr8(sd, AVM_CTL, 45);
746 i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V,
747 pdata->hdmi_detection_delay << 4);
748 i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST),
749 (pdata->hdmi_phy_auto_reset_hsync_out_of_range ?
750 MASK_H_PI_RST : 0) |
751 (pdata->hdmi_phy_auto_reset_vsync_out_of_range ?
752 MASK_V_PI_RST : 0));
753 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY);
754 }
755
756 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd)
757 {
758 struct tc358743_state *state = to_state(sd);
759
760 /* Default settings from REF_02, sheet "Source HDMI" */
761 i2c_wr8(sd, FORCE_MUTE, 0x00);
762 i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 |
763 MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 |
764 MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0);
765 i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9);
766 i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2);
767 i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500));
768 i2c_wr8(sd, FS_MUTE, 0x00);
769 i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE);
770 i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE);
771 i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM);
772 i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM);
773 i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S);
774 i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100));
775
776 mutex_lock(&state->confctl_mutex);
777 i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 |
778 MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX);
779 mutex_unlock(&state->confctl_mutex);
780 }
781
782 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd)
783 {
784 /* Default settings from REF_02, sheet "Source HDMI" */
785 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE |
786 MASK_ACP_INT_MODE | MASK_VS_INT_MODE |
787 MASK_SPD_INT_MODE | MASK_MS_INT_MODE |
788 MASK_AUD_INT_MODE | MASK_AVI_INT_MODE);
789 i2c_wr8(sd, NO_PKT_LIMIT, 0x2c);
790 i2c_wr8(sd, NO_PKT_CLR, 0x53);
791 i2c_wr8(sd, ERR_PK_LIMIT, 0x01);
792 i2c_wr8(sd, NO_PKT_LIMIT2, 0x30);
793 i2c_wr8(sd, NO_GDB_LIMIT, 0x10);
794 }
795
796 static void tc358743_initial_setup(struct v4l2_subdev *sd)
797 {
798 struct tc358743_state *state = to_state(sd);
799 struct tc358743_platform_data *pdata = &state->pdata;
800
801 /* CEC and IR are not supported by this driver */
802 i2c_wr16_and_or(sd, SYSCTL, ~(MASK_CECRST | MASK_IRRST),
803 (MASK_CECRST | MASK_IRRST));
804
805 tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
806 tc358743_sleep_mode(sd, false);
807
808 i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
809
810 tc358743_set_ref_clk(sd);
811
812 i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE,
813 pdata->ddc5v_delay & MASK_DDC5V_MODE);
814 i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC);
815
816 tc358743_set_hdmi_phy(sd);
817 tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp);
818 tc358743_set_hdmi_audio(sd);
819 tc358743_set_hdmi_info_frame_mode(sd);
820
821 /* All CE and IT formats are detected as RGB full range in DVI mode */
822 i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0);
823
824 i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE,
825 MASK_VOUTCOLORMODE_AUTO);
826 i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
827 }
828
829 /* --------------- IRQ --------------- */
830
831 static void tc358743_format_change(struct v4l2_subdev *sd)
832 {
833 struct tc358743_state *state = to_state(sd);
834 struct v4l2_dv_timings timings;
835 const struct v4l2_event tc358743_ev_fmt = {
836 .type = V4L2_EVENT_SOURCE_CHANGE,
837 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
838 };
839
840 if (tc358743_get_detected_timings(sd, &timings)) {
841 enable_stream(sd, false);
842
843 v4l2_dbg(1, debug, sd, "%s: Format changed. No signal\n",
844 __func__);
845 } else {
846 if (!v4l2_match_dv_timings(&state->timings, &timings, 0))
847 enable_stream(sd, false);
848
849 v4l2_print_dv_timings(sd->name,
850 "tc358743_format_change: Format changed. New format: ",
851 &timings, false);
852 }
853
854 v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT,
855 (void *)&tc358743_ev_fmt);
856 }
857
858 static void tc358743_init_interrupts(struct v4l2_subdev *sd)
859 {
860 u16 i;
861
862 /* clear interrupt status registers */
863 for (i = SYS_INT; i <= KEY_INT; i++)
864 i2c_wr8(sd, i, 0xff);
865
866 i2c_wr16(sd, INTSTATUS, 0xffff);
867 }
868
869 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
870 bool cable_connected)
871 {
872 v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__,
873 cable_connected);
874
875 if (cable_connected) {
876 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET |
877 MASK_M_HDMI_DET) & 0xff);
878 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG);
879 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
880 MASK_M_AF_UNLOCK) & 0xff);
881 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END);
882 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG);
883 } else {
884 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff);
885 i2c_wr8(sd, CLK_INTM, 0xff);
886 i2c_wr8(sd, CBIT_INTM, 0xff);
887 i2c_wr8(sd, AUDIO_INTM, 0xff);
888 i2c_wr8(sd, MISC_INTM, 0xff);
889 }
890 }
891
892 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd,
893 bool *handled)
894 {
895 u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM);
896 u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask;
897
898 i2c_wr8(sd, AUDIO_INT, audio_int);
899
900 v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int);
901
902 tc358743_s_ctrl_audio_sampling_rate(sd);
903 tc358743_s_ctrl_audio_present(sd);
904 }
905
906 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled)
907 {
908 v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR));
909
910 i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER);
911 }
912
913 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd,
914 bool *handled)
915 {
916 u8 misc_int_mask = i2c_rd8(sd, MISC_INTM);
917 u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask;
918
919 i2c_wr8(sd, MISC_INT, misc_int);
920
921 v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int);
922
923 if (misc_int & MASK_I_SYNC_CHG) {
924 /* Reset the HDMI PHY to try to trigger proper lock on the
925 * incoming video format. Erase BKSV to prevent that old keys
926 * are used when a new source is connected. */
927 if (no_sync(sd) || no_signal(sd)) {
928 tc358743_reset_phy(sd);
929 tc358743_erase_bksv(sd);
930 }
931
932 tc358743_format_change(sd);
933
934 misc_int &= ~MASK_I_SYNC_CHG;
935 if (handled)
936 *handled = true;
937 }
938
939 if (misc_int) {
940 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n",
941 __func__, misc_int);
942 }
943 }
944
945 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd,
946 bool *handled)
947 {
948 u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);
949 u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask;
950
951 i2c_wr8(sd, CBIT_INT, cbit_int);
952
953 v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int);
954
955 if (cbit_int & MASK_I_CBIT_FS) {
956
957 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n",
958 __func__);
959 tc358743_s_ctrl_audio_sampling_rate(sd);
960
961 cbit_int &= ~MASK_I_CBIT_FS;
962 if (handled)
963 *handled = true;
964 }
965
966 if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) {
967
968 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n",
969 __func__);
970 tc358743_s_ctrl_audio_present(sd);
971
972 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK);
973 if (handled)
974 *handled = true;
975 }
976
977 if (cbit_int) {
978 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n",
979 __func__, cbit_int);
980 }
981 }
982
983 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled)
984 {
985 u8 clk_int_mask = i2c_rd8(sd, CLK_INTM);
986 u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask;
987
988 /* Bit 7 and bit 6 are set even when they are masked */
989 i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG);
990
991 v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int);
992
993 if (clk_int & (MASK_I_IN_DE_CHG)) {
994
995 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n",
996 __func__);
997
998 /* If the source switch to a new resolution with the same pixel
999 * frequency as the existing (e.g. 1080p25 -> 720p50), the
1000 * I_SYNC_CHG interrupt is not always triggered, while the
1001 * I_IN_DE_CHG interrupt seems to work fine. Format change
1002 * notifications are only sent when the signal is stable to
1003 * reduce the number of notifications. */
1004 if (!no_signal(sd) && !no_sync(sd))
1005 tc358743_format_change(sd);
1006
1007 clk_int &= ~(MASK_I_IN_DE_CHG);
1008 if (handled)
1009 *handled = true;
1010 }
1011
1012 if (clk_int) {
1013 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n",
1014 __func__, clk_int);
1015 }
1016 }
1017
1018 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled)
1019 {
1020 struct tc358743_state *state = to_state(sd);
1021 u8 sys_int_mask = i2c_rd8(sd, SYS_INTM);
1022 u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask;
1023
1024 i2c_wr8(sd, SYS_INT, sys_int);
1025
1026 v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int);
1027
1028 if (sys_int & MASK_I_DDC) {
1029 bool tx_5v = tx_5v_power_present(sd);
1030
1031 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n",
1032 __func__, tx_5v ? "yes" : "no");
1033
1034 if (tx_5v) {
1035 tc358743_enable_edid(sd);
1036 } else {
1037 tc358743_enable_interrupts(sd, false);
1038 tc358743_disable_edid(sd);
1039 memset(&state->timings, 0, sizeof(state->timings));
1040 tc358743_erase_bksv(sd);
1041 tc358743_update_controls(sd);
1042 }
1043
1044 sys_int &= ~MASK_I_DDC;
1045 if (handled)
1046 *handled = true;
1047 }
1048
1049 if (sys_int & MASK_I_DVI) {
1050 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n",
1051 __func__);
1052
1053 /* Reset the HDMI PHY to try to trigger proper lock on the
1054 * incoming video format. Erase BKSV to prevent that old keys
1055 * are used when a new source is connected. */
1056 if (no_sync(sd) || no_signal(sd)) {
1057 tc358743_reset_phy(sd);
1058 tc358743_erase_bksv(sd);
1059 }
1060
1061 sys_int &= ~MASK_I_DVI;
1062 if (handled)
1063 *handled = true;
1064 }
1065
1066 if (sys_int & MASK_I_HDMI) {
1067 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n",
1068 __func__);
1069
1070 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */
1071 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON);
1072
1073 sys_int &= ~MASK_I_HDMI;
1074 if (handled)
1075 *handled = true;
1076 }
1077
1078 if (sys_int) {
1079 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n",
1080 __func__, sys_int);
1081 }
1082 }
1083
1084 /* --------------- CORE OPS --------------- */
1085
1086 static int tc358743_log_status(struct v4l2_subdev *sd)
1087 {
1088 struct tc358743_state *state = to_state(sd);
1089 struct v4l2_dv_timings timings;
1090 uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
1091 uint16_t sysctl = i2c_rd16(sd, SYSCTL);
1092 u8 vi_status3 = i2c_rd8(sd, VI_STATUS3);
1093 const int deep_color_mode[4] = { 8, 10, 12, 16 };
1094 static const char * const input_color_space[] = {
1095 "RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)",
1096 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
1097 "NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"};
1098
1099 v4l2_info(sd, "-----Chip status-----\n");
1100 v4l2_info(sd, "Chip ID: 0x%02x\n",
1101 (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8);
1102 v4l2_info(sd, "Chip revision: 0x%02x\n",
1103 i2c_rd16(sd, CHIPID) & MASK_REVID);
1104 v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n",
1105 !!(sysctl & MASK_IRRST),
1106 !!(sysctl & MASK_CECRST),
1107 !!(sysctl & MASK_CTXRST),
1108 !!(sysctl & MASK_HDMIRST));
1109 v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off");
1110 v4l2_info(sd, "Cable detected (+5V power): %s\n",
1111 hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no");
1112 v4l2_info(sd, "DDC lines enabled: %s\n",
1113 (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ?
1114 "yes" : "no");
1115 v4l2_info(sd, "Hotplug enabled: %s\n",
1116 (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ?
1117 "yes" : "no");
1118 v4l2_info(sd, "CEC enabled: %s\n",
1119 (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no");
1120 v4l2_info(sd, "-----Signal status-----\n");
1121 v4l2_info(sd, "TMDS signal detected: %s\n",
1122 hdmi_sys_status & MASK_S_TMDS ? "yes" : "no");
1123 v4l2_info(sd, "Stable sync signal: %s\n",
1124 hdmi_sys_status & MASK_S_SYNC ? "yes" : "no");
1125 v4l2_info(sd, "PHY PLL locked: %s\n",
1126 hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no");
1127 v4l2_info(sd, "PHY DE detected: %s\n",
1128 hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no");
1129
1130 if (tc358743_get_detected_timings(sd, &timings)) {
1131 v4l2_info(sd, "No video detected\n");
1132 } else {
1133 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings,
1134 true);
1135 }
1136 v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings,
1137 true);
1138
1139 v4l2_info(sd, "-----CSI-TX status-----\n");
1140 v4l2_info(sd, "Lanes needed: %d\n",
1141 tc358743_num_csi_lanes_needed(sd));
1142 v4l2_info(sd, "Lanes in use: %d\n",
1143 tc358743_num_csi_lanes_in_use(sd));
1144 v4l2_info(sd, "Waiting for particular sync signal: %s\n",
1145 (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ?
1146 "yes" : "no");
1147 v4l2_info(sd, "Transmit mode: %s\n",
1148 (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ?
1149 "yes" : "no");
1150 v4l2_info(sd, "Receive mode: %s\n",
1151 (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ?
1152 "yes" : "no");
1153 v4l2_info(sd, "Stopped: %s\n",
1154 (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
1155 "yes" : "no");
1156 v4l2_info(sd, "Color space: %s\n",
1157 state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
1158 "YCbCr 422 16-bit" :
1159 state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
1160 "RGB 888 24-bit" : "Unsupported");
1161
1162 v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
1163 v4l2_info(sd, "HDCP encrypted content: %s\n",
1164 hdmi_sys_status & MASK_S_HDCP ? "yes" : "no");
1165 v4l2_info(sd, "Input color space: %s %s range\n",
1166 input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1],
1167 (vi_status3 & MASK_LIMITED) ? "limited" : "full");
1168 if (!is_hdmi(sd))
1169 return 0;
1170 v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" :
1171 "off");
1172 v4l2_info(sd, "Deep color mode: %d-bits per channel\n",
1173 deep_color_mode[(i2c_rd8(sd, VI_STATUS1) &
1174 MASK_S_DEEPCOLOR) >> 2]);
1175 print_avi_infoframe(sd);
1176
1177 return 0;
1178 }
1179
1180 #ifdef CONFIG_VIDEO_ADV_DEBUG
1181 static void tc358743_print_register_map(struct v4l2_subdev *sd)
1182 {
1183 v4l2_info(sd, "0x0000–0x00FF: Global Control Register\n");
1184 v4l2_info(sd, "0x0100–0x01FF: CSI2-TX PHY Register\n");
1185 v4l2_info(sd, "0x0200–0x03FF: CSI2-TX PPI Register\n");
1186 v4l2_info(sd, "0x0400–0x05FF: Reserved\n");
1187 v4l2_info(sd, "0x0600–0x06FF: CEC Register\n");
1188 v4l2_info(sd, "0x0700–0x84FF: Reserved\n");
1189 v4l2_info(sd, "0x8500–0x85FF: HDMIRX System Control Register\n");
1190 v4l2_info(sd, "0x8600–0x86FF: HDMIRX Audio Control Register\n");
1191 v4l2_info(sd, "0x8700–0x87FF: HDMIRX InfoFrame packet data Register\n");
1192 v4l2_info(sd, "0x8800–0x88FF: HDMIRX HDCP Port Register\n");
1193 v4l2_info(sd, "0x8900–0x89FF: HDMIRX Video Output Port & 3D Register\n");
1194 v4l2_info(sd, "0x8A00–0x8BFF: Reserved\n");
1195 v4l2_info(sd, "0x8C00–0x8FFF: HDMIRX EDID-RAM (1024bytes)\n");
1196 v4l2_info(sd, "0x9000–0x90FF: HDMIRX GBD Extraction Control\n");
1197 v4l2_info(sd, "0x9100–0x92FF: HDMIRX GBD RAM read\n");
1198 v4l2_info(sd, "0x9300- : Reserved\n");
1199 }
1200
1201 static int tc358743_get_reg_size(u16 address)
1202 {
1203 /* REF_01 p. 66-72 */
1204 if (address <= 0x00ff)
1205 return 2;
1206 else if ((address >= 0x0100) && (address <= 0x06FF))
1207 return 4;
1208 else if ((address >= 0x0700) && (address <= 0x84ff))
1209 return 2;
1210 else
1211 return 1;
1212 }
1213
1214 static int tc358743_g_register(struct v4l2_subdev *sd,
1215 struct v4l2_dbg_register *reg)
1216 {
1217 if (reg->reg > 0xffff) {
1218 tc358743_print_register_map(sd);
1219 return -EINVAL;
1220 }
1221
1222 reg->size = tc358743_get_reg_size(reg->reg);
1223
1224 i2c_rd(sd, reg->reg, (u8 *)&reg->val, reg->size);
1225
1226 return 0;
1227 }
1228
1229 static int tc358743_s_register(struct v4l2_subdev *sd,
1230 const struct v4l2_dbg_register *reg)
1231 {
1232 if (reg->reg > 0xffff) {
1233 tc358743_print_register_map(sd);
1234 return -EINVAL;
1235 }
1236
1237 /* It should not be possible for the user to enable HDCP with a simple
1238 * v4l2-dbg command.
1239 *
1240 * DO NOT REMOVE THIS unless all other issues with HDCP have been
1241 * resolved.
1242 */
1243 if (reg->reg == HDCP_MODE ||
1244 reg->reg == HDCP_REG1 ||
1245 reg->reg == HDCP_REG2 ||
1246 reg->reg == HDCP_REG3 ||
1247 reg->reg == BCAPS)
1248 return 0;
1249
1250 i2c_wr(sd, (u16)reg->reg, (u8 *)&reg->val,
1251 tc358743_get_reg_size(reg->reg));
1252
1253 return 0;
1254 }
1255 #endif
1256
1257 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1258 {
1259 u16 intstatus = i2c_rd16(sd, INTSTATUS);
1260
1261 v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus);
1262
1263 if (intstatus & MASK_HDMI_INT) {
1264 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0);
1265 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1);
1266
1267 if (hdmi_int0 & MASK_I_MISC)
1268 tc358743_hdmi_misc_int_handler(sd, handled);
1269 if (hdmi_int1 & MASK_I_CBIT)
1270 tc358743_hdmi_cbit_int_handler(sd, handled);
1271 if (hdmi_int1 & MASK_I_CLK)
1272 tc358743_hdmi_clk_int_handler(sd, handled);
1273 if (hdmi_int1 & MASK_I_SYS)
1274 tc358743_hdmi_sys_int_handler(sd, handled);
1275 if (hdmi_int1 & MASK_I_AUD)
1276 tc358743_hdmi_audio_int_handler(sd, handled);
1277
1278 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT);
1279 intstatus &= ~MASK_HDMI_INT;
1280 }
1281
1282 if (intstatus & MASK_CSI_INT) {
1283 u32 csi_int = i2c_rd32(sd, CSI_INT);
1284
1285 if (csi_int & MASK_INTER)
1286 tc358743_csi_err_int_handler(sd, handled);
1287
1288 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT);
1289 intstatus &= ~MASK_CSI_INT;
1290 }
1291
1292 intstatus = i2c_rd16(sd, INTSTATUS);
1293 if (intstatus) {
1294 v4l2_dbg(1, debug, sd,
1295 "%s: Unhandled IntStatus interrupts: 0x%02x\n",
1296 __func__, intstatus);
1297 }
1298
1299 return 0;
1300 }
1301
1302 /* --------------- VIDEO OPS --------------- */
1303
1304 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
1305 {
1306 *status = 0;
1307 *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
1308 *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0;
1309
1310 v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
1311
1312 return 0;
1313 }
1314
1315 static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
1316 struct v4l2_dv_timings *timings)
1317 {
1318 struct tc358743_state *state = to_state(sd);
1319 struct v4l2_bt_timings *bt;
1320
1321 if (!timings)
1322 return -EINVAL;
1323
1324 if (debug)
1325 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ",
1326 timings, false);
1327
1328 if (v4l2_match_dv_timings(&state->timings, timings, 0)) {
1329 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1330 return 0;
1331 }
1332
1333 bt = &timings->bt;
1334
1335 if (!v4l2_valid_dv_timings(timings,
1336 &tc358743_timings_cap, NULL, NULL)) {
1337 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1338 return -ERANGE;
1339 }
1340
1341 state->timings = *timings;
1342
1343 enable_stream(sd, false);
1344 tc358743_set_pll(sd);
1345 tc358743_set_csi(sd);
1346
1347 return 0;
1348 }
1349
1350 static int tc358743_g_dv_timings(struct v4l2_subdev *sd,
1351 struct v4l2_dv_timings *timings)
1352 {
1353 struct tc358743_state *state = to_state(sd);
1354
1355 *timings = state->timings;
1356
1357 return 0;
1358 }
1359
1360 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd,
1361 struct v4l2_enum_dv_timings *timings)
1362 {
1363 if (timings->pad != 0)
1364 return -EINVAL;
1365
1366 return v4l2_enum_dv_timings_cap(timings,
1367 &tc358743_timings_cap, NULL, NULL);
1368 }
1369
1370 static int tc358743_query_dv_timings(struct v4l2_subdev *sd,
1371 struct v4l2_dv_timings *timings)
1372 {
1373 int ret;
1374
1375 ret = tc358743_get_detected_timings(sd, timings);
1376 if (ret)
1377 return ret;
1378
1379 if (debug)
1380 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ",
1381 timings, false);
1382
1383 if (!v4l2_valid_dv_timings(timings,
1384 &tc358743_timings_cap, NULL, NULL)) {
1385 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1386 return -ERANGE;
1387 }
1388
1389 return 0;
1390 }
1391
1392 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd,
1393 struct v4l2_dv_timings_cap *cap)
1394 {
1395 if (cap->pad != 0)
1396 return -EINVAL;
1397
1398 *cap = tc358743_timings_cap;
1399
1400 return 0;
1401 }
1402
1403 static int tc358743_g_mbus_config(struct v4l2_subdev *sd,
1404 struct v4l2_mbus_config *cfg)
1405 {
1406 cfg->type = V4L2_MBUS_CSI2;
1407
1408 /* Support for non-continuous CSI-2 clock is missing in the driver */
1409 cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
1410
1411 switch (tc358743_num_csi_lanes_in_use(sd)) {
1412 case 1:
1413 cfg->flags |= V4L2_MBUS_CSI2_1_LANE;
1414 break;
1415 case 2:
1416 cfg->flags |= V4L2_MBUS_CSI2_2_LANE;
1417 break;
1418 case 3:
1419 cfg->flags |= V4L2_MBUS_CSI2_3_LANE;
1420 break;
1421 case 4:
1422 cfg->flags |= V4L2_MBUS_CSI2_4_LANE;
1423 break;
1424 default:
1425 return -EINVAL;
1426 }
1427
1428 return 0;
1429 }
1430
1431 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
1432 {
1433 enable_stream(sd, enable);
1434
1435 return 0;
1436 }
1437
1438 /* --------------- PAD OPS --------------- */
1439
1440 static int tc358743_get_fmt(struct v4l2_subdev *sd,
1441 struct v4l2_subdev_pad_config *cfg,
1442 struct v4l2_subdev_format *format)
1443 {
1444 struct tc358743_state *state = to_state(sd);
1445 u8 vi_rep = i2c_rd8(sd, VI_REP);
1446
1447 if (format->pad != 0)
1448 return -EINVAL;
1449
1450 format->format.code = state->mbus_fmt_code;
1451 format->format.width = state->timings.bt.width;
1452 format->format.height = state->timings.bt.height;
1453 format->format.field = V4L2_FIELD_NONE;
1454
1455 switch (vi_rep & MASK_VOUT_COLOR_SEL) {
1456 case MASK_VOUT_COLOR_RGB_FULL:
1457 case MASK_VOUT_COLOR_RGB_LIMITED:
1458 format->format.colorspace = V4L2_COLORSPACE_SRGB;
1459 break;
1460 case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
1461 case MASK_VOUT_COLOR_601_YCBCR_FULL:
1462 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
1463 break;
1464 case MASK_VOUT_COLOR_709_YCBCR_FULL:
1465 case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
1466 format->format.colorspace = V4L2_COLORSPACE_REC709;
1467 break;
1468 default:
1469 format->format.colorspace = 0;
1470 break;
1471 }
1472
1473 return 0;
1474 }
1475
1476 static int tc358743_set_fmt(struct v4l2_subdev *sd,
1477 struct v4l2_subdev_pad_config *cfg,
1478 struct v4l2_subdev_format *format)
1479 {
1480 struct tc358743_state *state = to_state(sd);
1481
1482 u32 code = format->format.code; /* is overwritten by get_fmt */
1483 int ret = tc358743_get_fmt(sd, cfg, format);
1484
1485 format->format.code = code;
1486
1487 if (ret)
1488 return ret;
1489
1490 switch (code) {
1491 case MEDIA_BUS_FMT_RGB888_1X24:
1492 case MEDIA_BUS_FMT_UYVY8_1X16:
1493 break;
1494 default:
1495 return -EINVAL;
1496 }
1497
1498 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1499 return 0;
1500
1501 state->mbus_fmt_code = format->format.code;
1502
1503 enable_stream(sd, false);
1504 tc358743_set_pll(sd);
1505 tc358743_set_csi(sd);
1506 tc358743_set_csi_color_space(sd);
1507
1508 return 0;
1509 }
1510
1511 static int tc358743_g_edid(struct v4l2_subdev *sd,
1512 struct v4l2_subdev_edid *edid)
1513 {
1514 struct tc358743_state *state = to_state(sd);
1515
1516 if (edid->pad != 0)
1517 return -EINVAL;
1518
1519 if (edid->start_block == 0 && edid->blocks == 0) {
1520 edid->blocks = state->edid_blocks_written;
1521 return 0;
1522 }
1523
1524 if (state->edid_blocks_written == 0)
1525 return -ENODATA;
1526
1527 if (edid->start_block >= state->edid_blocks_written ||
1528 edid->blocks == 0)
1529 return -EINVAL;
1530
1531 if (edid->start_block + edid->blocks > state->edid_blocks_written)
1532 edid->blocks = state->edid_blocks_written - edid->start_block;
1533
1534 i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid,
1535 edid->blocks * EDID_BLOCK_SIZE);
1536
1537 return 0;
1538 }
1539
1540 static int tc358743_s_edid(struct v4l2_subdev *sd,
1541 struct v4l2_subdev_edid *edid)
1542 {
1543 struct tc358743_state *state = to_state(sd);
1544 u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
1545
1546 v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
1547 __func__, edid->pad, edid->start_block, edid->blocks);
1548
1549 if (edid->pad != 0)
1550 return -EINVAL;
1551
1552 if (edid->start_block != 0)
1553 return -EINVAL;
1554
1555 if (edid->blocks > EDID_NUM_BLOCKS_MAX) {
1556 edid->blocks = EDID_NUM_BLOCKS_MAX;
1557 return -E2BIG;
1558 }
1559
1560 tc358743_disable_edid(sd);
1561
1562 i2c_wr8(sd, EDID_LEN1, edid_len & 0xff);
1563 i2c_wr8(sd, EDID_LEN2, edid_len >> 8);
1564
1565 if (edid->blocks == 0) {
1566 state->edid_blocks_written = 0;
1567 return 0;
1568 }
1569
1570 i2c_wr(sd, EDID_RAM, edid->edid, edid_len);
1571
1572 state->edid_blocks_written = edid->blocks;
1573
1574 if (tx_5v_power_present(sd))
1575 tc358743_enable_edid(sd);
1576
1577 return 0;
1578 }
1579
1580 /* -------------------------------------------------------------------------- */
1581
1582 static const struct v4l2_subdev_core_ops tc358743_core_ops = {
1583 .log_status = tc358743_log_status,
1584 #ifdef CONFIG_VIDEO_ADV_DEBUG
1585 .g_register = tc358743_g_register,
1586 .s_register = tc358743_s_register,
1587 #endif
1588 .interrupt_service_routine = tc358743_isr,
1589 };
1590
1591 static const struct v4l2_subdev_video_ops tc358743_video_ops = {
1592 .g_input_status = tc358743_g_input_status,
1593 .s_dv_timings = tc358743_s_dv_timings,
1594 .g_dv_timings = tc358743_g_dv_timings,
1595 .query_dv_timings = tc358743_query_dv_timings,
1596 .g_mbus_config = tc358743_g_mbus_config,
1597 .s_stream = tc358743_s_stream,
1598 };
1599
1600 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
1601 .set_fmt = tc358743_set_fmt,
1602 .get_fmt = tc358743_get_fmt,
1603 .get_edid = tc358743_g_edid,
1604 .set_edid = tc358743_s_edid,
1605 .enum_dv_timings = tc358743_enum_dv_timings,
1606 .dv_timings_cap = tc358743_dv_timings_cap,
1607 };
1608
1609 static const struct v4l2_subdev_ops tc358743_ops = {
1610 .core = &tc358743_core_ops,
1611 .video = &tc358743_video_ops,
1612 .pad = &tc358743_pad_ops,
1613 };
1614
1615 /* --------------- CUSTOM CTRLS --------------- */
1616
1617 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = {
1618 .id = TC358743_CID_AUDIO_SAMPLING_RATE,
1619 .name = "Audio sampling rate",
1620 .type = V4L2_CTRL_TYPE_INTEGER,
1621 .min = 0,
1622 .max = 768000,
1623 .step = 1,
1624 .def = 0,
1625 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1626 };
1627
1628 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = {
1629 .id = TC358743_CID_AUDIO_PRESENT,
1630 .name = "Audio present",
1631 .type = V4L2_CTRL_TYPE_BOOLEAN,
1632 .min = 0,
1633 .max = 1,
1634 .step = 1,
1635 .def = 0,
1636 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1637 };
1638
1639 /* --------------- PROBE / REMOVE --------------- */
1640
1641 static int tc358743_probe(struct i2c_client *client,
1642 const struct i2c_device_id *id)
1643 {
1644 static struct v4l2_dv_timings default_timing =
1645 V4L2_DV_BT_CEA_640X480P59_94;
1646 struct tc358743_state *state;
1647 struct tc358743_platform_data *pdata = client->dev.platform_data;
1648 struct v4l2_subdev *sd;
1649 int err;
1650
1651 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1652 return -EIO;
1653 v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n",
1654 client->addr << 1, client->adapter->name);
1655
1656 state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state),
1657 GFP_KERNEL);
1658 if (!state)
1659 return -ENOMEM;
1660
1661 /* platform data */
1662 if (!pdata) {
1663 v4l_err(client, "No platform data!\n");
1664 return -ENODEV;
1665 }
1666 state->pdata = *pdata;
1667
1668 state->i2c_client = client;
1669 sd = &state->sd;
1670 v4l2_i2c_subdev_init(sd, client, &tc358743_ops);
1671 sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
1672
1673 /* i2c access */
1674 if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
1675 v4l2_info(sd, "not a TC358743 on address 0x%x\n",
1676 client->addr << 1);
1677 return -ENODEV;
1678 }
1679
1680 /* control handlers */
1681 v4l2_ctrl_handler_init(&state->hdl, 3);
1682
1683 /* private controls */
1684 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL,
1685 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
1686
1687 /* custom controls */
1688 state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
1689 &tc358743_ctrl_audio_sampling_rate, NULL);
1690
1691 state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
1692 &tc358743_ctrl_audio_present, NULL);
1693
1694 sd->ctrl_handler = &state->hdl;
1695 if (state->hdl.error) {
1696 err = state->hdl.error;
1697 goto err_hdl;
1698 }
1699
1700 if (tc358743_update_controls(sd)) {
1701 err = -ENODEV;
1702 goto err_hdl;
1703 }
1704
1705 /* work queues */
1706 state->work_queues = create_singlethread_workqueue(client->name);
1707 if (!state->work_queues) {
1708 v4l2_err(sd, "Could not create work queue\n");
1709 err = -ENOMEM;
1710 goto err_hdl;
1711 }
1712
1713 state->pad.flags = MEDIA_PAD_FL_SOURCE;
1714 err = media_entity_init(&sd->entity, 1, &state->pad, 0);
1715 if (err < 0)
1716 goto err_hdl;
1717
1718 sd->dev = &client->dev;
1719 err = v4l2_async_register_subdev(sd);
1720 if (err < 0)
1721 goto err_hdl;
1722
1723 mutex_init(&state->confctl_mutex);
1724
1725 INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
1726 tc358743_delayed_work_enable_hotplug);
1727
1728 tc358743_initial_setup(sd);
1729
1730 tc358743_s_dv_timings(sd, &default_timing);
1731
1732 state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
1733 tc358743_set_csi_color_space(sd);
1734
1735 tc358743_init_interrupts(sd);
1736 tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
1737 i2c_wr16(sd, INTMASK, ~(MASK_HDMI_MSK | MASK_CSI_MSK) & 0xffff);
1738
1739 err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
1740 if (err)
1741 goto err_work_queues;
1742
1743 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
1744 client->addr << 1, client->adapter->name);
1745
1746 return 0;
1747
1748 err_work_queues:
1749 cancel_delayed_work(&state->delayed_work_enable_hotplug);
1750 destroy_workqueue(state->work_queues);
1751 mutex_destroy(&state->confctl_mutex);
1752 err_hdl:
1753 media_entity_cleanup(&sd->entity);
1754 v4l2_ctrl_handler_free(&state->hdl);
1755 return err;
1756 }
1757
1758 static int tc358743_remove(struct i2c_client *client)
1759 {
1760 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1761 struct tc358743_state *state = to_state(sd);
1762
1763 cancel_delayed_work(&state->delayed_work_enable_hotplug);
1764 destroy_workqueue(state->work_queues);
1765 v4l2_async_unregister_subdev(sd);
1766 v4l2_device_unregister_subdev(sd);
1767 mutex_destroy(&state->confctl_mutex);
1768 media_entity_cleanup(&sd->entity);
1769 v4l2_ctrl_handler_free(&state->hdl);
1770
1771 return 0;
1772 }
1773
1774 static struct i2c_device_id tc358743_id[] = {
1775 {"tc358743", 0},
1776 {}
1777 };
1778
1779 MODULE_DEVICE_TABLE(i2c, tc358743_id);
1780
1781 static struct i2c_driver tc358743_driver = {
1782 .driver = {
1783 .owner = THIS_MODULE,
1784 .name = "tc358743",
1785 },
1786 .probe = tc358743_probe,
1787 .remove = tc358743_remove,
1788 .id_table = tc358743_id,
1789 };
1790
1791 module_i2c_driver(tc358743_driver);
Linux kernel - Deliverables
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