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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / i2c / tc358743.c
blob2b8181469b937ab6b54c475613ed41db1bc645bc
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/timer.h>
37 #include <linux/of_graph.h>
38 #include <linux/videodev2.h>
39 #include <linux/workqueue.h>
40 #include <linux/v4l2-dv-timings.h>
41 #include <linux/hdmi.h>
42 #include <media/cec.h>
43 #include <media/v4l2-dv-timings.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ctrls.h>
46 #include <media/v4l2-event.h>
47 #include <media/v4l2-fwnode.h>
48 #include <media/i2c/tc358743.h>
49
50 #include "tc358743_regs.h"
51
52 static int debug;
53 module_param(debug, int, 0644);
54 MODULE_PARM_DESC(debug, "debug level (0-3)");
55
56 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver");
57 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>");
58 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>");
59 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>");
60 MODULE_LICENSE("GPL");
61
62 #define EDID_NUM_BLOCKS_MAX 8
63 #define EDID_BLOCK_SIZE 128
64
65 #define I2C_MAX_XFER_SIZE (EDID_BLOCK_SIZE + 2)
66
67 #define POLL_INTERVAL_CEC_MS 10
68 #define POLL_INTERVAL_MS 1000
69
70 static const struct v4l2_dv_timings_cap tc358743_timings_cap = {
71 .type = V4L2_DV_BT_656_1120,
72 /* keep this initialization for compatibility with GCC < 4.4.6 */
73 .reserved = { 0 },
74 /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */
75 V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 165000000,
76 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
77 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
78 V4L2_DV_BT_CAP_PROGRESSIVE |
79 V4L2_DV_BT_CAP_REDUCED_BLANKING |
80 V4L2_DV_BT_CAP_CUSTOM)
81 };
82
83 struct tc358743_state {
84 struct tc358743_platform_data pdata;
85 struct v4l2_fwnode_bus_mipi_csi2 bus;
86 struct v4l2_subdev sd;
87 struct media_pad pad;
88 struct v4l2_ctrl_handler hdl;
89 struct i2c_client *i2c_client;
90 /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */
91 struct mutex confctl_mutex;
92
93 /* controls */
94 struct v4l2_ctrl *detect_tx_5v_ctrl;
95 struct v4l2_ctrl *audio_sampling_rate_ctrl;
96 struct v4l2_ctrl *audio_present_ctrl;
97
98 struct delayed_work delayed_work_enable_hotplug;
99
100 struct timer_list timer;
101 struct work_struct work_i2c_poll;
102
103 /* edid */
104 u8 edid_blocks_written;
105
106 struct v4l2_dv_timings timings;
107 u32 mbus_fmt_code;
108 u8 csi_lanes_in_use;
109
110 struct gpio_desc *reset_gpio;
111
112 struct cec_adapter *cec_adap;
113 };
114
115 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
116 bool cable_connected);
117 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
118
119 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd)
120 {
121 return container_of(sd, struct tc358743_state, sd);
122 }
123
124 /* --------------- I2C --------------- */
125
126 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
127 {
128 struct tc358743_state *state = to_state(sd);
129 struct i2c_client *client = state->i2c_client;
130 int err;
131 u8 buf[2] = { reg >> 8, reg & 0xff };
132 struct i2c_msg msgs[] = {
133 {
134 .addr = client->addr,
135 .flags = 0,
136 .len = 2,
137 .buf = buf,
138 },
139 {
140 .addr = client->addr,
141 .flags = I2C_M_RD,
142 .len = n,
143 .buf = values,
144 },
145 };
146
147 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
148 if (err != ARRAY_SIZE(msgs)) {
149 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
150 __func__, reg, client->addr);
151 }
152 }
153
154 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
155 {
156 struct tc358743_state *state = to_state(sd);
157 struct i2c_client *client = state->i2c_client;
158 int err, i;
159 struct i2c_msg msg;
160 u8 data[I2C_MAX_XFER_SIZE];
161
162 if ((2 + n) > I2C_MAX_XFER_SIZE) {
163 n = I2C_MAX_XFER_SIZE - 2;
164 v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n",
165 reg, 2 + n);
166 }
167
168 msg.addr = client->addr;
169 msg.buf = data;
170 msg.len = 2 + n;
171 msg.flags = 0;
172
173 data[0] = reg >> 8;
174 data[1] = reg & 0xff;
175
176 for (i = 0; i < n; i++)
177 data[2 + i] = values[i];
178
179 err = i2c_transfer(client->adapter, &msg, 1);
180 if (err != 1) {
181 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n",
182 __func__, reg, client->addr);
183 return;
184 }
185
186 if (debug < 3)
187 return;
188
189 switch (n) {
190 case 1:
191 v4l2_info(sd, "I2C write 0x%04x = 0x%02x",
192 reg, data[2]);
193 break;
194 case 2:
195 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x",
196 reg, data[3], data[2]);
197 break;
198 case 4:
199 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x",
200 reg, data[5], data[4], data[3], data[2]);
201 break;
202 default:
203 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
204 n, reg);
205 }
206 }
207
208 static noinline u32 i2c_rdreg(struct v4l2_subdev *sd, u16 reg, u32 n)
209 {
210 __le32 val = 0;
211
212 i2c_rd(sd, reg, (u8 __force *)&val, n);
213
214 return le32_to_cpu(val);
215 }
216
217 static noinline void i2c_wrreg(struct v4l2_subdev *sd, u16 reg, u32 val, u32 n)
218 {
219 __le32 raw = cpu_to_le32(val);
220
221 i2c_wr(sd, reg, (u8 __force *)&raw, n);
222 }
223
224 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
225 {
226 return i2c_rdreg(sd, reg, 1);
227 }
228
229 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
230 {
231 i2c_wrreg(sd, reg, val, 1);
232 }
233
234 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
235 u8 mask, u8 val)
236 {
237 i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 1) & mask) | val, 1);
238 }
239
240 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
241 {
242 return i2c_rdreg(sd, reg, 2);
243 }
244
245 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
246 {
247 i2c_wrreg(sd, reg, val, 2);
248 }
249
250 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
251 {
252 i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 2) & mask) | val, 2);
253 }
254
255 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)
256 {
257 return i2c_rdreg(sd, reg, 4);
258 }
259
260 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val)
261 {
262 i2c_wrreg(sd, reg, val, 4);
263 }
264
265 /* --------------- STATUS --------------- */
266
267 static inline bool is_hdmi(struct v4l2_subdev *sd)
268 {
269 return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
270 }
271
272 static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
273 {
274 return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
275 }
276
277 static inline bool no_signal(struct v4l2_subdev *sd)
278 {
279 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
280 }
281
282 static inline bool no_sync(struct v4l2_subdev *sd)
283 {
284 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);
285 }
286
287 static inline bool audio_present(struct v4l2_subdev *sd)
288 {
289 return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE;
290 }
291
292 static int get_audio_sampling_rate(struct v4l2_subdev *sd)
293 {
294 static const int code_to_rate[] = {
295 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
296 88200, 768000, 96000, 705600, 176400, 0, 192000, 0
297 };
298
299 /* Register FS_SET is not cleared when the cable is disconnected */
300 if (no_signal(sd))
301 return 0;
302
303 return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS];
304 }
305
306 /* --------------- TIMINGS --------------- */
307
308 static inline unsigned fps(const struct v4l2_bt_timings *t)
309 {
310 if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
311 return 0;
312
313 return DIV_ROUND_CLOSEST((unsigned)t->pixelclock,
314 V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
315 }
316
317 static int tc358743_get_detected_timings(struct v4l2_subdev *sd,
318 struct v4l2_dv_timings *timings)
319 {
320 struct v4l2_bt_timings *bt = &timings->bt;
321 unsigned width, height, frame_width, frame_height, frame_interval, fps;
322
323 memset(timings, 0, sizeof(struct v4l2_dv_timings));
324
325 if (no_signal(sd)) {
326 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
327 return -ENOLINK;
328 }
329 if (no_sync(sd)) {
330 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__);
331 return -ENOLCK;
332 }
333
334 timings->type = V4L2_DV_BT_656_1120;
335 bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ?
336 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
337
338 width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) +
339 i2c_rd8(sd, DE_WIDTH_H_LO);
340 height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) +
341 i2c_rd8(sd, DE_WIDTH_V_LO);
342 frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) +
343 i2c_rd8(sd, H_SIZE_LO);
344 frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) +
345 i2c_rd8(sd, V_SIZE_LO)) / 2;
346 /* frame interval in milliseconds * 10
347 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */
348 frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) +
349 i2c_rd8(sd, FV_CNT_LO);
350 fps = (frame_interval > 0) ?
351 DIV_ROUND_CLOSEST(10000, frame_interval) : 0;
352
353 bt->width = width;
354 bt->height = height;
355 bt->vsync = frame_height - height;
356 bt->hsync = frame_width - width;
357 bt->pixelclock = frame_width * frame_height * fps;
358 if (bt->interlaced == V4L2_DV_INTERLACED) {
359 bt->height *= 2;
360 bt->il_vsync = bt->vsync + 1;
361 bt->pixelclock /= 2;
362 }
363
364 return 0;
365 }
366
367 /* --------------- HOTPLUG / HDCP / EDID --------------- */
368
369 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work)
370 {
371 struct delayed_work *dwork = to_delayed_work(work);
372 struct tc358743_state *state = container_of(dwork,
373 struct tc358743_state, delayed_work_enable_hotplug);
374 struct v4l2_subdev *sd = &state->sd;
375
376 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
377
378 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0);
379 }
380
381 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable)
382 {
383 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ?
384 "enable" : "disable");
385
386 if (enable) {
387 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, KEY_RD_CMD);
388
389 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION, 0);
390
391 i2c_wr8_and_or(sd, HDCP_REG1, 0xff,
392 MASK_AUTH_UNAUTH_SEL_16_FRAMES |
393 MASK_AUTH_UNAUTH_AUTO);
394
395 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET,
396 SET_AUTO_P3_RESET_FRAMES(0x0f));
397 } else {
398 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION,
399 MASK_MANUAL_AUTHENTICATION);
400 }
401 }
402
403 static void tc358743_disable_edid(struct v4l2_subdev *sd)
404 {
405 struct tc358743_state *state = to_state(sd);
406
407 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
408
409 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
410
411 /* DDC access to EDID is also disabled when hotplug is disabled. See
412 * register DDC_CTL */
413 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0);
414 }
415
416 static void tc358743_enable_edid(struct v4l2_subdev *sd)
417 {
418 struct tc358743_state *state = to_state(sd);
419
420 if (state->edid_blocks_written == 0) {
421 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__);
422 tc358743_s_ctrl_detect_tx_5v(sd);
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 schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 10);
431
432 tc358743_enable_interrupts(sd, true);
433 tc358743_s_ctrl_detect_tx_5v(sd);
434 }
435
436 static void tc358743_erase_bksv(struct v4l2_subdev *sd)
437 {
438 int i;
439
440 for (i = 0; i < 5; i++)
441 i2c_wr8(sd, BKSV + i, 0);
442 }
443
444 /* --------------- AVI infoframe --------------- */
445
446 static void print_avi_infoframe(struct v4l2_subdev *sd)
447 {
448 struct i2c_client *client = v4l2_get_subdevdata(sd);
449 struct device *dev = &client->dev;
450 union hdmi_infoframe frame;
451 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
452
453 if (!is_hdmi(sd)) {
454 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
455 return;
456 }
457
458 i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI));
459
460 if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
461 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__);
462 return;
463 }
464
465 hdmi_infoframe_log(KERN_INFO, dev, &frame);
466 }
467
468 /* --------------- CTRLS --------------- */
469
470 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
471 {
472 struct tc358743_state *state = to_state(sd);
473
474 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
475 tx_5v_power_present(sd));
476 }
477
478 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
479 {
480 struct tc358743_state *state = to_state(sd);
481
482 return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl,
483 get_audio_sampling_rate(sd));
484 }
485
486 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd)
487 {
488 struct tc358743_state *state = to_state(sd);
489
490 return v4l2_ctrl_s_ctrl(state->audio_present_ctrl,
491 audio_present(sd));
492 }
493
494 static int tc358743_update_controls(struct v4l2_subdev *sd)
495 {
496 int ret = 0;
497
498 ret |= tc358743_s_ctrl_detect_tx_5v(sd);
499 ret |= tc358743_s_ctrl_audio_sampling_rate(sd);
500 ret |= tc358743_s_ctrl_audio_present(sd);
501
502 return ret;
503 }
504
505 /* --------------- INIT --------------- */
506
507 static void tc358743_reset_phy(struct v4l2_subdev *sd)
508 {
509 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
510
511 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0);
512 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL);
513 }
514
515 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask)
516 {
517 u16 sysctl = i2c_rd16(sd, SYSCTL);
518
519 i2c_wr16(sd, SYSCTL, sysctl | mask);
520 i2c_wr16(sd, SYSCTL, sysctl & ~mask);
521 }
522
523 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable)
524 {
525 i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP,
526 enable ? MASK_SLEEP : 0);
527 }
528
529 static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
530 {
531 struct tc358743_state *state = to_state(sd);
532
533 v4l2_dbg(3, debug, sd, "%s: %sable\n",
534 __func__, enable ? "en" : "dis");
535
536 if (enable) {
537 /* It is critical for CSI receiver to see lane transition
538 * LP11->HS. Set to non-continuous mode to enable clock lane
539 * LP11 state. */
540 i2c_wr32(sd, TXOPTIONCNTRL, 0);
541 /* Set to continuous mode to trigger LP11->HS transition */
542 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
543 /* Unmute video */
544 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE);
545 } else {
546 /* Mute video so that all data lanes go to LSP11 state.
547 * No data is output to CSI Tx block. */
548 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE);
549 }
550
551 mutex_lock(&state->confctl_mutex);
552 i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN),
553 enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0);
554 mutex_unlock(&state->confctl_mutex);
555 }
556
557 static void tc358743_set_pll(struct v4l2_subdev *sd)
558 {
559 struct tc358743_state *state = to_state(sd);
560 struct tc358743_platform_data *pdata = &state->pdata;
561 u16 pllctl0 = i2c_rd16(sd, PLLCTL0);
562 u16 pllctl1 = i2c_rd16(sd, PLLCTL1);
563 u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) |
564 SET_PLL_FBD(pdata->pll_fbd);
565 u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
566
567 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
568
569 /* Only rewrite when needed (new value or disabled), since rewriting
570 * triggers another format change event. */
571 if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) {
572 u16 pll_frs;
573
574 if (hsck > 500000000)
575 pll_frs = 0x0;
576 else if (hsck > 250000000)
577 pll_frs = 0x1;
578 else if (hsck > 125000000)
579 pll_frs = 0x2;
580 else
581 pll_frs = 0x3;
582
583 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__);
584 tc358743_sleep_mode(sd, true);
585 i2c_wr16(sd, PLLCTL0, pllctl0_new);
586 i2c_wr16_and_or(sd, PLLCTL1,
587 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN),
588 (SET_PLL_FRS(pll_frs) | MASK_RESETB |
589 MASK_PLL_EN));
590 udelay(10); /* REF_02, Sheet "Source HDMI" */
591 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN);
592 tc358743_sleep_mode(sd, false);
593 }
594 }
595
596 static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
597 {
598 struct tc358743_state *state = to_state(sd);
599 struct tc358743_platform_data *pdata = &state->pdata;
600 u32 sys_freq;
601 u32 lockdet_ref;
602 u32 cec_freq;
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 * Trial and error suggests that the default register value
637 * of 656 is for a 42 MHz reference clock. Use that to derive
638 * a new value based on the actual reference clock.
639 */
640 cec_freq = (656 * sys_freq) / 4200;
641 i2c_wr16(sd, CECHCLK, cec_freq);
642 i2c_wr16(sd, CECLCLK, cec_freq);
643 }
644
645 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
646 {
647 struct tc358743_state *state = to_state(sd);
648
649 switch (state->mbus_fmt_code) {
650 case MEDIA_BUS_FMT_UYVY8_1X16:
651 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__);
652 i2c_wr8_and_or(sd, VOUT_SET2,
653 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
654 MASK_SEL422 | MASK_VOUT_422FIL_100);
655 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
656 MASK_VOUT_COLOR_601_YCBCR_LIMITED);
657 mutex_lock(&state->confctl_mutex);
658 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
659 MASK_YCBCRFMT_422_8_BIT);
660 mutex_unlock(&state->confctl_mutex);
661 break;
662 case MEDIA_BUS_FMT_RGB888_1X24:
663 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__);
664 i2c_wr8_and_or(sd, VOUT_SET2,
665 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
666 0x00);
667 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
668 MASK_VOUT_COLOR_RGB_FULL);
669 mutex_lock(&state->confctl_mutex);
670 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
671 mutex_unlock(&state->confctl_mutex);
672 break;
673 default:
674 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n",
675 __func__, state->mbus_fmt_code);
676 }
677 }
678
679 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd)
680 {
681 struct tc358743_state *state = to_state(sd);
682 struct v4l2_bt_timings *bt = &state->timings.bt;
683 struct tc358743_platform_data *pdata = &state->pdata;
684 u32 bits_pr_pixel =
685 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24;
686 u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel;
687 u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
688
689 return DIV_ROUND_UP(bps, bps_pr_lane);
690 }
691
692 static void tc358743_set_csi(struct v4l2_subdev *sd)
693 {
694 struct tc358743_state *state = to_state(sd);
695 struct tc358743_platform_data *pdata = &state->pdata;
696 unsigned lanes = tc358743_num_csi_lanes_needed(sd);
697
698 v4l2_dbg(3, debug, sd, "%s:\n", __func__);
699
700 state->csi_lanes_in_use = lanes;
701
702 tc358743_reset(sd, MASK_CTXRST);
703
704 if (lanes < 1)
705 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE);
706 if (lanes < 1)
707 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE);
708 if (lanes < 2)
709 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE);
710 if (lanes < 3)
711 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE);
712 if (lanes < 4)
713 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE);
714
715 i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt);
716 i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt);
717 i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt);
718 i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt);
719 i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt);
720 i2c_wr32(sd, TWAKEUP, pdata->twakeup);
721 i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt);
722 i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt);
723 i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt);
724
725 i2c_wr32(sd, HSTXVREGEN,
726 ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) |
727 ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) |
728 ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) |
729 ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) |
730 ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0));
731
732 i2c_wr32(sd, TXOPTIONCNTRL, (state->bus.flags &
733 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) ? MASK_CONTCLKMODE : 0);
734 i2c_wr32(sd, STARTCNTRL, MASK_START);
735 i2c_wr32(sd, CSI_START, MASK_STRT);
736
737 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
738 MASK_ADDRESS_CSI_CONTROL |
739 MASK_CSI_MODE |
740 MASK_TXHSMD |
741 ((lanes == 4) ? MASK_NOL_4 :
742 (lanes == 3) ? MASK_NOL_3 :
743 (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1));
744
745 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
746 MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK |
747 MASK_WCER | MASK_INER);
748
749 i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR |
750 MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK);
751
752 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
753 MASK_ADDRESS_CSI_INT_ENA | MASK_INTER);
754 }
755
756 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd)
757 {
758 struct tc358743_state *state = to_state(sd);
759 struct tc358743_platform_data *pdata = &state->pdata;
760
761 /* Default settings from REF_02, sheet "Source HDMI"
762 * and custom settings as platform data */
763 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0);
764 i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) |
765 SET_FREQ_RANGE_MODE_CYCLES(1));
766 i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn,
767 (pdata->hdmi_phy_auto_reset_tmds_detected ?
768 MASK_PHY_AUTO_RST2 : 0) |
769 (pdata->hdmi_phy_auto_reset_tmds_in_range ?
770 MASK_PHY_AUTO_RST3 : 0) |
771 (pdata->hdmi_phy_auto_reset_tmds_valid ?
772 MASK_PHY_AUTO_RST4 : 0));
773 i2c_wr8(sd, PHY_BIAS, 0x40);
774 i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a));
775 i2c_wr8(sd, AVM_CTL, 45);
776 i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V,
777 pdata->hdmi_detection_delay << 4);
778 i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST),
779 (pdata->hdmi_phy_auto_reset_hsync_out_of_range ?
780 MASK_H_PI_RST : 0) |
781 (pdata->hdmi_phy_auto_reset_vsync_out_of_range ?
782 MASK_V_PI_RST : 0));
783 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY);
784 }
785
786 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd)
787 {
788 struct tc358743_state *state = to_state(sd);
789
790 /* Default settings from REF_02, sheet "Source HDMI" */
791 i2c_wr8(sd, FORCE_MUTE, 0x00);
792 i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 |
793 MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 |
794 MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0);
795 i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9);
796 i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2);
797 i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500));
798 i2c_wr8(sd, FS_MUTE, 0x00);
799 i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE);
800 i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE);
801 i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM);
802 i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM);
803 i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S);
804 i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100));
805
806 mutex_lock(&state->confctl_mutex);
807 i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 |
808 MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX);
809 mutex_unlock(&state->confctl_mutex);
810 }
811
812 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd)
813 {
814 /* Default settings from REF_02, sheet "Source HDMI" */
815 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE |
816 MASK_ACP_INT_MODE | MASK_VS_INT_MODE |
817 MASK_SPD_INT_MODE | MASK_MS_INT_MODE |
818 MASK_AUD_INT_MODE | MASK_AVI_INT_MODE);
819 i2c_wr8(sd, NO_PKT_LIMIT, 0x2c);
820 i2c_wr8(sd, NO_PKT_CLR, 0x53);
821 i2c_wr8(sd, ERR_PK_LIMIT, 0x01);
822 i2c_wr8(sd, NO_PKT_LIMIT2, 0x30);
823 i2c_wr8(sd, NO_GDB_LIMIT, 0x10);
824 }
825
826 static void tc358743_initial_setup(struct v4l2_subdev *sd)
827 {
828 struct tc358743_state *state = to_state(sd);
829 struct tc358743_platform_data *pdata = &state->pdata;
830
831 /*
832 * IR is not supported by this driver.
833 * CEC is only enabled if needed.
834 */
835 i2c_wr16_and_or(sd, SYSCTL, ~(MASK_IRRST | MASK_CECRST),
836 (MASK_IRRST | MASK_CECRST));
837
838 tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
839 #ifdef CONFIG_VIDEO_TC358743_CEC
840 tc358743_reset(sd, MASK_CECRST);
841 #endif
842 tc358743_sleep_mode(sd, false);
843
844 i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
845
846 tc358743_set_ref_clk(sd);
847
848 i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE,
849 pdata->ddc5v_delay & MASK_DDC5V_MODE);
850 i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC);
851
852 tc358743_set_hdmi_phy(sd);
853 tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp);
854 tc358743_set_hdmi_audio(sd);
855 tc358743_set_hdmi_info_frame_mode(sd);
856
857 /* All CE and IT formats are detected as RGB full range in DVI mode */
858 i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0);
859
860 i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE,
861 MASK_VOUTCOLORMODE_AUTO);
862 i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
863 }
864
865 /* --------------- CEC --------------- */
866
867 #ifdef CONFIG_VIDEO_TC358743_CEC
868 static int tc358743_cec_adap_enable(struct cec_adapter *adap, bool enable)
869 {
870 struct tc358743_state *state = adap->priv;
871 struct v4l2_subdev *sd = &state->sd;
872
873 i2c_wr32(sd, CECIMSK, enable ? MASK_CECTIM | MASK_CECRIM : 0);
874 i2c_wr32(sd, CECICLR, MASK_CECTICLR | MASK_CECRICLR);
875 i2c_wr32(sd, CECEN, enable);
876 if (enable)
877 i2c_wr32(sd, CECREN, MASK_CECREN);
878 return 0;
879 }
880
881 static int tc358743_cec_adap_monitor_all_enable(struct cec_adapter *adap,
882 bool enable)
883 {
884 struct tc358743_state *state = adap->priv;
885 struct v4l2_subdev *sd = &state->sd;
886 u32 reg;
887
888 reg = i2c_rd32(sd, CECRCTL1);
889 if (enable)
890 reg |= MASK_CECOTH;
891 else
892 reg &= ~MASK_CECOTH;
893 i2c_wr32(sd, CECRCTL1, reg);
894 return 0;
895 }
896
897 static int tc358743_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
898 {
899 struct tc358743_state *state = adap->priv;
900 struct v4l2_subdev *sd = &state->sd;
901 unsigned int la = 0;
902
903 if (log_addr != CEC_LOG_ADDR_INVALID) {
904 la = i2c_rd32(sd, CECADD);
905 la |= 1 << log_addr;
906 }
907 i2c_wr32(sd, CECADD, la);
908 return 0;
909 }
910
911 static int tc358743_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
912 u32 signal_free_time, struct cec_msg *msg)
913 {
914 struct tc358743_state *state = adap->priv;
915 struct v4l2_subdev *sd = &state->sd;
916 unsigned int i;
917
918 i2c_wr32(sd, CECTCTL,
919 (cec_msg_is_broadcast(msg) ? MASK_CECBRD : 0) |
920 (signal_free_time - 1));
921 for (i = 0; i < msg->len; i++)
922 i2c_wr32(sd, CECTBUF1 + i * 4,
923 msg->msg[i] | ((i == msg->len - 1) ? MASK_CECTEOM : 0));
924 i2c_wr32(sd, CECTEN, MASK_CECTEN);
925 return 0;
926 }
927
928 static const struct cec_adap_ops tc358743_cec_adap_ops = {
929 .adap_enable = tc358743_cec_adap_enable,
930 .adap_log_addr = tc358743_cec_adap_log_addr,
931 .adap_transmit = tc358743_cec_adap_transmit,
932 .adap_monitor_all_enable = tc358743_cec_adap_monitor_all_enable,
933 };
934
935 static void tc358743_cec_isr(struct v4l2_subdev *sd, u16 intstatus,
936 bool *handled)
937 {
938 struct tc358743_state *state = to_state(sd);
939 unsigned int cec_rxint, cec_txint;
940 unsigned int clr = 0;
941
942 cec_rxint = i2c_rd32(sd, CECRSTAT);
943 cec_txint = i2c_rd32(sd, CECTSTAT);
944
945 if (intstatus & MASK_CEC_RINT)
946 clr |= MASK_CECRICLR;
947 if (intstatus & MASK_CEC_TINT)
948 clr |= MASK_CECTICLR;
949 i2c_wr32(sd, CECICLR, clr);
950
951 if ((intstatus & MASK_CEC_TINT) && cec_txint) {
952 if (cec_txint & MASK_CECTIEND)
953 cec_transmit_attempt_done(state->cec_adap,
954 CEC_TX_STATUS_OK);
955 else if (cec_txint & MASK_CECTIAL)
956 cec_transmit_attempt_done(state->cec_adap,
957 CEC_TX_STATUS_ARB_LOST);
958 else if (cec_txint & MASK_CECTIACK)
959 cec_transmit_attempt_done(state->cec_adap,
960 CEC_TX_STATUS_NACK);
961 else if (cec_txint & MASK_CECTIUR) {
962 /*
963 * Not sure when this bit is set. Treat
964 * it as an error for now.
965 */
966 cec_transmit_attempt_done(state->cec_adap,
967 CEC_TX_STATUS_ERROR);
968 }
969 *handled = true;
970 }
971 if ((intstatus & MASK_CEC_RINT) &&
972 (cec_rxint & MASK_CECRIEND)) {
973 struct cec_msg msg = {};
974 unsigned int i;
975 unsigned int v;
976
977 v = i2c_rd32(sd, CECRCTR);
978 msg.len = v & 0x1f;
979 for (i = 0; i < msg.len; i++) {
980 v = i2c_rd32(sd, CECRBUF1 + i * 4);
981 msg.msg[i] = v & 0xff;
982 }
983 cec_received_msg(state->cec_adap, &msg);
984 *handled = true;
985 }
986 i2c_wr16(sd, INTSTATUS,
987 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
988 }
989
990 #endif
991
992 /* --------------- IRQ --------------- */
993
994 static void tc358743_format_change(struct v4l2_subdev *sd)
995 {
996 struct tc358743_state *state = to_state(sd);
997 struct v4l2_dv_timings timings;
998 const struct v4l2_event tc358743_ev_fmt = {
999 .type = V4L2_EVENT_SOURCE_CHANGE,
1000 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1001 };
1002
1003 if (tc358743_get_detected_timings(sd, &timings)) {
1004 enable_stream(sd, false);
1005
1006 v4l2_dbg(1, debug, sd, "%s: No signal\n",
1007 __func__);
1008 } else {
1009 if (!v4l2_match_dv_timings(&state->timings, &timings, 0, false))
1010 enable_stream(sd, false);
1011
1012 if (debug)
1013 v4l2_print_dv_timings(sd->name,
1014 "tc358743_format_change: New format: ",
1015 &timings, false);
1016 }
1017
1018 if (sd->devnode)
1019 v4l2_subdev_notify_event(sd, &tc358743_ev_fmt);
1020 }
1021
1022 static void tc358743_init_interrupts(struct v4l2_subdev *sd)
1023 {
1024 u16 i;
1025
1026 /* clear interrupt status registers */
1027 for (i = SYS_INT; i <= KEY_INT; i++)
1028 i2c_wr8(sd, i, 0xff);
1029
1030 i2c_wr16(sd, INTSTATUS, 0xffff);
1031 }
1032
1033 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
1034 bool cable_connected)
1035 {
1036 v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__,
1037 cable_connected);
1038
1039 if (cable_connected) {
1040 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET |
1041 MASK_M_HDMI_DET) & 0xff);
1042 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG);
1043 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
1044 MASK_M_AF_UNLOCK) & 0xff);
1045 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END);
1046 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG);
1047 } else {
1048 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff);
1049 i2c_wr8(sd, CLK_INTM, 0xff);
1050 i2c_wr8(sd, CBIT_INTM, 0xff);
1051 i2c_wr8(sd, AUDIO_INTM, 0xff);
1052 i2c_wr8(sd, MISC_INTM, 0xff);
1053 }
1054 }
1055
1056 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd,
1057 bool *handled)
1058 {
1059 u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM);
1060 u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask;
1061
1062 i2c_wr8(sd, AUDIO_INT, audio_int);
1063
1064 v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int);
1065
1066 tc358743_s_ctrl_audio_sampling_rate(sd);
1067 tc358743_s_ctrl_audio_present(sd);
1068 }
1069
1070 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled)
1071 {
1072 v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR));
1073
1074 i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER);
1075 }
1076
1077 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd,
1078 bool *handled)
1079 {
1080 u8 misc_int_mask = i2c_rd8(sd, MISC_INTM);
1081 u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask;
1082
1083 i2c_wr8(sd, MISC_INT, misc_int);
1084
1085 v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int);
1086
1087 if (misc_int & MASK_I_SYNC_CHG) {
1088 /* Reset the HDMI PHY to try to trigger proper lock on the
1089 * incoming video format. Erase BKSV to prevent that old keys
1090 * are used when a new source is connected. */
1091 if (no_sync(sd) || no_signal(sd)) {
1092 tc358743_reset_phy(sd);
1093 tc358743_erase_bksv(sd);
1094 }
1095
1096 tc358743_format_change(sd);
1097
1098 misc_int &= ~MASK_I_SYNC_CHG;
1099 if (handled)
1100 *handled = true;
1101 }
1102
1103 if (misc_int) {
1104 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n",
1105 __func__, misc_int);
1106 }
1107 }
1108
1109 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd,
1110 bool *handled)
1111 {
1112 u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);
1113 u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask;
1114
1115 i2c_wr8(sd, CBIT_INT, cbit_int);
1116
1117 v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int);
1118
1119 if (cbit_int & MASK_I_CBIT_FS) {
1120
1121 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n",
1122 __func__);
1123 tc358743_s_ctrl_audio_sampling_rate(sd);
1124
1125 cbit_int &= ~MASK_I_CBIT_FS;
1126 if (handled)
1127 *handled = true;
1128 }
1129
1130 if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) {
1131
1132 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n",
1133 __func__);
1134 tc358743_s_ctrl_audio_present(sd);
1135
1136 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK);
1137 if (handled)
1138 *handled = true;
1139 }
1140
1141 if (cbit_int) {
1142 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n",
1143 __func__, cbit_int);
1144 }
1145 }
1146
1147 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled)
1148 {
1149 u8 clk_int_mask = i2c_rd8(sd, CLK_INTM);
1150 u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask;
1151
1152 /* Bit 7 and bit 6 are set even when they are masked */
1153 i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG);
1154
1155 v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int);
1156
1157 if (clk_int & (MASK_I_IN_DE_CHG)) {
1158
1159 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n",
1160 __func__);
1161
1162 /* If the source switch to a new resolution with the same pixel
1163 * frequency as the existing (e.g. 1080p25 -> 720p50), the
1164 * I_SYNC_CHG interrupt is not always triggered, while the
1165 * I_IN_DE_CHG interrupt seems to work fine. Format change
1166 * notifications are only sent when the signal is stable to
1167 * reduce the number of notifications. */
1168 if (!no_signal(sd) && !no_sync(sd))
1169 tc358743_format_change(sd);
1170
1171 clk_int &= ~(MASK_I_IN_DE_CHG);
1172 if (handled)
1173 *handled = true;
1174 }
1175
1176 if (clk_int) {
1177 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n",
1178 __func__, clk_int);
1179 }
1180 }
1181
1182 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled)
1183 {
1184 struct tc358743_state *state = to_state(sd);
1185 u8 sys_int_mask = i2c_rd8(sd, SYS_INTM);
1186 u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask;
1187
1188 i2c_wr8(sd, SYS_INT, sys_int);
1189
1190 v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int);
1191
1192 if (sys_int & MASK_I_DDC) {
1193 bool tx_5v = tx_5v_power_present(sd);
1194
1195 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n",
1196 __func__, tx_5v ? "yes" : "no");
1197
1198 if (tx_5v) {
1199 tc358743_enable_edid(sd);
1200 } else {
1201 tc358743_enable_interrupts(sd, false);
1202 tc358743_disable_edid(sd);
1203 memset(&state->timings, 0, sizeof(state->timings));
1204 tc358743_erase_bksv(sd);
1205 tc358743_update_controls(sd);
1206 }
1207
1208 sys_int &= ~MASK_I_DDC;
1209 if (handled)
1210 *handled = true;
1211 }
1212
1213 if (sys_int & MASK_I_DVI) {
1214 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n",
1215 __func__);
1216
1217 /* Reset the HDMI PHY to try to trigger proper lock on the
1218 * incoming video format. Erase BKSV to prevent that old keys
1219 * are used when a new source is connected. */
1220 if (no_sync(sd) || no_signal(sd)) {
1221 tc358743_reset_phy(sd);
1222 tc358743_erase_bksv(sd);
1223 }
1224
1225 sys_int &= ~MASK_I_DVI;
1226 if (handled)
1227 *handled = true;
1228 }
1229
1230 if (sys_int & MASK_I_HDMI) {
1231 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n",
1232 __func__);
1233
1234 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */
1235 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON);
1236
1237 sys_int &= ~MASK_I_HDMI;
1238 if (handled)
1239 *handled = true;
1240 }
1241
1242 if (sys_int) {
1243 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n",
1244 __func__, sys_int);
1245 }
1246 }
1247
1248 /* --------------- CORE OPS --------------- */
1249
1250 static int tc358743_log_status(struct v4l2_subdev *sd)
1251 {
1252 struct tc358743_state *state = to_state(sd);
1253 struct v4l2_dv_timings timings;
1254 uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
1255 uint16_t sysctl = i2c_rd16(sd, SYSCTL);
1256 u8 vi_status3 = i2c_rd8(sd, VI_STATUS3);
1257 const int deep_color_mode[4] = { 8, 10, 12, 16 };
1258 static const char * const input_color_space[] = {
1259 "RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)",
1260 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
1261 "NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"};
1262
1263 v4l2_info(sd, "-----Chip status-----\n");
1264 v4l2_info(sd, "Chip ID: 0x%02x\n",
1265 (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8);
1266 v4l2_info(sd, "Chip revision: 0x%02x\n",
1267 i2c_rd16(sd, CHIPID) & MASK_REVID);
1268 v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n",
1269 !!(sysctl & MASK_IRRST),
1270 !!(sysctl & MASK_CECRST),
1271 !!(sysctl & MASK_CTXRST),
1272 !!(sysctl & MASK_HDMIRST));
1273 v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off");
1274 v4l2_info(sd, "Cable detected (+5V power): %s\n",
1275 hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no");
1276 v4l2_info(sd, "DDC lines enabled: %s\n",
1277 (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ?
1278 "yes" : "no");
1279 v4l2_info(sd, "Hotplug enabled: %s\n",
1280 (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ?
1281 "yes" : "no");
1282 v4l2_info(sd, "CEC enabled: %s\n",
1283 (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no");
1284 v4l2_info(sd, "-----Signal status-----\n");
1285 v4l2_info(sd, "TMDS signal detected: %s\n",
1286 hdmi_sys_status & MASK_S_TMDS ? "yes" : "no");
1287 v4l2_info(sd, "Stable sync signal: %s\n",
1288 hdmi_sys_status & MASK_S_SYNC ? "yes" : "no");
1289 v4l2_info(sd, "PHY PLL locked: %s\n",
1290 hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no");
1291 v4l2_info(sd, "PHY DE detected: %s\n",
1292 hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no");
1293
1294 if (tc358743_get_detected_timings(sd, &timings)) {
1295 v4l2_info(sd, "No video detected\n");
1296 } else {
1297 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings,
1298 true);
1299 }
1300 v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings,
1301 true);
1302
1303 v4l2_info(sd, "-----CSI-TX status-----\n");
1304 v4l2_info(sd, "Lanes needed: %d\n",
1305 tc358743_num_csi_lanes_needed(sd));
1306 v4l2_info(sd, "Lanes in use: %d\n",
1307 state->csi_lanes_in_use);
1308 v4l2_info(sd, "Waiting for particular sync signal: %s\n",
1309 (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ?
1310 "yes" : "no");
1311 v4l2_info(sd, "Transmit mode: %s\n",
1312 (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ?
1313 "yes" : "no");
1314 v4l2_info(sd, "Receive mode: %s\n",
1315 (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ?
1316 "yes" : "no");
1317 v4l2_info(sd, "Stopped: %s\n",
1318 (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
1319 "yes" : "no");
1320 v4l2_info(sd, "Color space: %s\n",
1321 state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
1322 "YCbCr 422 16-bit" :
1323 state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
1324 "RGB 888 24-bit" : "Unsupported");
1325
1326 v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
1327 v4l2_info(sd, "HDCP encrypted content: %s\n",
1328 hdmi_sys_status & MASK_S_HDCP ? "yes" : "no");
1329 v4l2_info(sd, "Input color space: %s %s range\n",
1330 input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1],
1331 (vi_status3 & MASK_LIMITED) ? "limited" : "full");
1332 if (!is_hdmi(sd))
1333 return 0;
1334 v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" :
1335 "off");
1336 v4l2_info(sd, "Deep color mode: %d-bits per channel\n",
1337 deep_color_mode[(i2c_rd8(sd, VI_STATUS1) &
1338 MASK_S_DEEPCOLOR) >> 2]);
1339 print_avi_infoframe(sd);
1340
1341 return 0;
1342 }
1343
1344 #ifdef CONFIG_VIDEO_ADV_DEBUG
1345 static void tc358743_print_register_map(struct v4l2_subdev *sd)
1346 {
1347 v4l2_info(sd, "0x0000-0x00FF: Global Control Register\n");
1348 v4l2_info(sd, "0x0100-0x01FF: CSI2-TX PHY Register\n");
1349 v4l2_info(sd, "0x0200-0x03FF: CSI2-TX PPI Register\n");
1350 v4l2_info(sd, "0x0400-0x05FF: Reserved\n");
1351 v4l2_info(sd, "0x0600-0x06FF: CEC Register\n");
1352 v4l2_info(sd, "0x0700-0x84FF: Reserved\n");
1353 v4l2_info(sd, "0x8500-0x85FF: HDMIRX System Control Register\n");
1354 v4l2_info(sd, "0x8600-0x86FF: HDMIRX Audio Control Register\n");
1355 v4l2_info(sd, "0x8700-0x87FF: HDMIRX InfoFrame packet data Register\n");
1356 v4l2_info(sd, "0x8800-0x88FF: HDMIRX HDCP Port Register\n");
1357 v4l2_info(sd, "0x8900-0x89FF: HDMIRX Video Output Port & 3D Register\n");
1358 v4l2_info(sd, "0x8A00-0x8BFF: Reserved\n");
1359 v4l2_info(sd, "0x8C00-0x8FFF: HDMIRX EDID-RAM (1024bytes)\n");
1360 v4l2_info(sd, "0x9000-0x90FF: HDMIRX GBD Extraction Control\n");
1361 v4l2_info(sd, "0x9100-0x92FF: HDMIRX GBD RAM read\n");
1362 v4l2_info(sd, "0x9300- : Reserved\n");
1363 }
1364
1365 static int tc358743_get_reg_size(u16 address)
1366 {
1367 /* REF_01 p. 66-72 */
1368 if (address <= 0x00ff)
1369 return 2;
1370 else if ((address >= 0x0100) && (address <= 0x06FF))
1371 return 4;
1372 else if ((address >= 0x0700) && (address <= 0x84ff))
1373 return 2;
1374 else
1375 return 1;
1376 }
1377
1378 static int tc358743_g_register(struct v4l2_subdev *sd,
1379 struct v4l2_dbg_register *reg)
1380 {
1381 if (reg->reg > 0xffff) {
1382 tc358743_print_register_map(sd);
1383 return -EINVAL;
1384 }
1385
1386 reg->size = tc358743_get_reg_size(reg->reg);
1387
1388 reg->val = i2c_rdreg(sd, reg->reg, reg->size);
1389
1390 return 0;
1391 }
1392
1393 static int tc358743_s_register(struct v4l2_subdev *sd,
1394 const struct v4l2_dbg_register *reg)
1395 {
1396 if (reg->reg > 0xffff) {
1397 tc358743_print_register_map(sd);
1398 return -EINVAL;
1399 }
1400
1401 /* It should not be possible for the user to enable HDCP with a simple
1402 * v4l2-dbg command.
1403 *
1404 * DO NOT REMOVE THIS unless all other issues with HDCP have been
1405 * resolved.
1406 */
1407 if (reg->reg == HDCP_MODE ||
1408 reg->reg == HDCP_REG1 ||
1409 reg->reg == HDCP_REG2 ||
1410 reg->reg == HDCP_REG3 ||
1411 reg->reg == BCAPS)
1412 return 0;
1413
1414 i2c_wrreg(sd, (u16)reg->reg, reg->val,
1415 tc358743_get_reg_size(reg->reg));
1416
1417 return 0;
1418 }
1419 #endif
1420
1421 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1422 {
1423 u16 intstatus = i2c_rd16(sd, INTSTATUS);
1424
1425 v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus);
1426
1427 if (intstatus & MASK_HDMI_INT) {
1428 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0);
1429 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1);
1430
1431 if (hdmi_int0 & MASK_I_MISC)
1432 tc358743_hdmi_misc_int_handler(sd, handled);
1433 if (hdmi_int1 & MASK_I_CBIT)
1434 tc358743_hdmi_cbit_int_handler(sd, handled);
1435 if (hdmi_int1 & MASK_I_CLK)
1436 tc358743_hdmi_clk_int_handler(sd, handled);
1437 if (hdmi_int1 & MASK_I_SYS)
1438 tc358743_hdmi_sys_int_handler(sd, handled);
1439 if (hdmi_int1 & MASK_I_AUD)
1440 tc358743_hdmi_audio_int_handler(sd, handled);
1441
1442 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT);
1443 intstatus &= ~MASK_HDMI_INT;
1444 }
1445
1446 #ifdef CONFIG_VIDEO_TC358743_CEC
1447 if (intstatus & (MASK_CEC_RINT | MASK_CEC_TINT)) {
1448 tc358743_cec_isr(sd, intstatus, handled);
1449 i2c_wr16(sd, INTSTATUS,
1450 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
1451 intstatus &= ~(MASK_CEC_RINT | MASK_CEC_TINT);
1452 }
1453 #endif
1454
1455 if (intstatus & MASK_CSI_INT) {
1456 u32 csi_int = i2c_rd32(sd, CSI_INT);
1457
1458 if (csi_int & MASK_INTER)
1459 tc358743_csi_err_int_handler(sd, handled);
1460
1461 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT);
1462 }
1463
1464 intstatus = i2c_rd16(sd, INTSTATUS);
1465 if (intstatus) {
1466 v4l2_dbg(1, debug, sd,
1467 "%s: Unhandled IntStatus interrupts: 0x%02x\n",
1468 __func__, intstatus);
1469 }
1470
1471 return 0;
1472 }
1473
1474 static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
1475 {
1476 struct tc358743_state *state = dev_id;
1477 bool handled;
1478
1479 tc358743_isr(&state->sd, 0, &handled);
1480
1481 return handled ? IRQ_HANDLED : IRQ_NONE;
1482 }
1483
1484 static void tc358743_irq_poll_timer(struct timer_list *t)
1485 {
1486 struct tc358743_state *state = from_timer(state, t, timer);
1487 unsigned int msecs;
1488
1489 schedule_work(&state->work_i2c_poll);
1490 /*
1491 * If CEC is present, then we need to poll more frequently,
1492 * otherwise we will miss CEC messages.
1493 */
1494 msecs = state->cec_adap ? POLL_INTERVAL_CEC_MS : POLL_INTERVAL_MS;
1495 mod_timer(&state->timer, jiffies + msecs_to_jiffies(msecs));
1496 }
1497
1498 static void tc358743_work_i2c_poll(struct work_struct *work)
1499 {
1500 struct tc358743_state *state = container_of(work,
1501 struct tc358743_state, work_i2c_poll);
1502 bool handled;
1503
1504 tc358743_isr(&state->sd, 0, &handled);
1505 }
1506
1507 static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1508 struct v4l2_event_subscription *sub)
1509 {
1510 switch (sub->type) {
1511 case V4L2_EVENT_SOURCE_CHANGE:
1512 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
1513 case V4L2_EVENT_CTRL:
1514 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
1515 default:
1516 return -EINVAL;
1517 }
1518 }
1519
1520 /* --------------- VIDEO OPS --------------- */
1521
1522 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
1523 {
1524 *status = 0;
1525 *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
1526 *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0;
1527
1528 v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
1529
1530 return 0;
1531 }
1532
1533 static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
1534 struct v4l2_dv_timings *timings)
1535 {
1536 struct tc358743_state *state = to_state(sd);
1537
1538 if (!timings)
1539 return -EINVAL;
1540
1541 if (debug)
1542 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ",
1543 timings, false);
1544
1545 if (v4l2_match_dv_timings(&state->timings, timings, 0, false)) {
1546 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1547 return 0;
1548 }
1549
1550 if (!v4l2_valid_dv_timings(timings,
1551 &tc358743_timings_cap, NULL, NULL)) {
1552 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1553 return -ERANGE;
1554 }
1555
1556 state->timings = *timings;
1557
1558 enable_stream(sd, false);
1559 tc358743_set_pll(sd);
1560 tc358743_set_csi(sd);
1561
1562 return 0;
1563 }
1564
1565 static int tc358743_g_dv_timings(struct v4l2_subdev *sd,
1566 struct v4l2_dv_timings *timings)
1567 {
1568 struct tc358743_state *state = to_state(sd);
1569
1570 *timings = state->timings;
1571
1572 return 0;
1573 }
1574
1575 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd,
1576 struct v4l2_enum_dv_timings *timings)
1577 {
1578 if (timings->pad != 0)
1579 return -EINVAL;
1580
1581 return v4l2_enum_dv_timings_cap(timings,
1582 &tc358743_timings_cap, NULL, NULL);
1583 }
1584
1585 static int tc358743_query_dv_timings(struct v4l2_subdev *sd,
1586 struct v4l2_dv_timings *timings)
1587 {
1588 int ret;
1589
1590 ret = tc358743_get_detected_timings(sd, timings);
1591 if (ret)
1592 return ret;
1593
1594 if (debug)
1595 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ",
1596 timings, false);
1597
1598 if (!v4l2_valid_dv_timings(timings,
1599 &tc358743_timings_cap, NULL, NULL)) {
1600 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1601 return -ERANGE;
1602 }
1603
1604 return 0;
1605 }
1606
1607 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd,
1608 struct v4l2_dv_timings_cap *cap)
1609 {
1610 if (cap->pad != 0)
1611 return -EINVAL;
1612
1613 *cap = tc358743_timings_cap;
1614
1615 return 0;
1616 }
1617
1618 static int tc358743_g_mbus_config(struct v4l2_subdev *sd,
1619 struct v4l2_mbus_config *cfg)
1620 {
1621 struct tc358743_state *state = to_state(sd);
1622
1623 cfg->type = V4L2_MBUS_CSI2;
1624
1625 /* Support for non-continuous CSI-2 clock is missing in the driver */
1626 cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
1627
1628 switch (state->csi_lanes_in_use) {
1629 case 1:
1630 cfg->flags |= V4L2_MBUS_CSI2_1_LANE;
1631 break;
1632 case 2:
1633 cfg->flags |= V4L2_MBUS_CSI2_2_LANE;
1634 break;
1635 case 3:
1636 cfg->flags |= V4L2_MBUS_CSI2_3_LANE;
1637 break;
1638 case 4:
1639 cfg->flags |= V4L2_MBUS_CSI2_4_LANE;
1640 break;
1641 default:
1642 return -EINVAL;
1643 }
1644
1645 return 0;
1646 }
1647
1648 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
1649 {
1650 enable_stream(sd, enable);
1651 if (!enable) {
1652 /* Put all lanes in LP-11 state (STOPSTATE) */
1653 tc358743_set_csi(sd);
1654 }
1655
1656 return 0;
1657 }
1658
1659 /* --------------- PAD OPS --------------- */
1660
1661 static int tc358743_enum_mbus_code(struct v4l2_subdev *sd,
1662 struct v4l2_subdev_pad_config *cfg,
1663 struct v4l2_subdev_mbus_code_enum *code)
1664 {
1665 switch (code->index) {
1666 case 0:
1667 code->code = MEDIA_BUS_FMT_RGB888_1X24;
1668 break;
1669 case 1:
1670 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
1671 break;
1672 default:
1673 return -EINVAL;
1674 }
1675 return 0;
1676 }
1677
1678 static int tc358743_get_fmt(struct v4l2_subdev *sd,
1679 struct v4l2_subdev_pad_config *cfg,
1680 struct v4l2_subdev_format *format)
1681 {
1682 struct tc358743_state *state = to_state(sd);
1683 u8 vi_rep = i2c_rd8(sd, VI_REP);
1684
1685 if (format->pad != 0)
1686 return -EINVAL;
1687
1688 format->format.code = state->mbus_fmt_code;
1689 format->format.width = state->timings.bt.width;
1690 format->format.height = state->timings.bt.height;
1691 format->format.field = V4L2_FIELD_NONE;
1692
1693 switch (vi_rep & MASK_VOUT_COLOR_SEL) {
1694 case MASK_VOUT_COLOR_RGB_FULL:
1695 case MASK_VOUT_COLOR_RGB_LIMITED:
1696 format->format.colorspace = V4L2_COLORSPACE_SRGB;
1697 break;
1698 case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
1699 case MASK_VOUT_COLOR_601_YCBCR_FULL:
1700 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
1701 break;
1702 case MASK_VOUT_COLOR_709_YCBCR_FULL:
1703 case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
1704 format->format.colorspace = V4L2_COLORSPACE_REC709;
1705 break;
1706 default:
1707 format->format.colorspace = 0;
1708 break;
1709 }
1710
1711 return 0;
1712 }
1713
1714 static int tc358743_set_fmt(struct v4l2_subdev *sd,
1715 struct v4l2_subdev_pad_config *cfg,
1716 struct v4l2_subdev_format *format)
1717 {
1718 struct tc358743_state *state = to_state(sd);
1719
1720 u32 code = format->format.code; /* is overwritten by get_fmt */
1721 int ret = tc358743_get_fmt(sd, cfg, format);
1722
1723 format->format.code = code;
1724
1725 if (ret)
1726 return ret;
1727
1728 switch (code) {
1729 case MEDIA_BUS_FMT_RGB888_1X24:
1730 case MEDIA_BUS_FMT_UYVY8_1X16:
1731 break;
1732 default:
1733 return -EINVAL;
1734 }
1735
1736 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1737 return 0;
1738
1739 state->mbus_fmt_code = format->format.code;
1740
1741 enable_stream(sd, false);
1742 tc358743_set_pll(sd);
1743 tc358743_set_csi(sd);
1744 tc358743_set_csi_color_space(sd);
1745
1746 return 0;
1747 }
1748
1749 static int tc358743_g_edid(struct v4l2_subdev *sd,
1750 struct v4l2_subdev_edid *edid)
1751 {
1752 struct tc358743_state *state = to_state(sd);
1753
1754 memset(edid->reserved, 0, sizeof(edid->reserved));
1755
1756 if (edid->pad != 0)
1757 return -EINVAL;
1758
1759 if (edid->start_block == 0 && edid->blocks == 0) {
1760 edid->blocks = state->edid_blocks_written;
1761 return 0;
1762 }
1763
1764 if (state->edid_blocks_written == 0)
1765 return -ENODATA;
1766
1767 if (edid->start_block >= state->edid_blocks_written ||
1768 edid->blocks == 0)
1769 return -EINVAL;
1770
1771 if (edid->start_block + edid->blocks > state->edid_blocks_written)
1772 edid->blocks = state->edid_blocks_written - edid->start_block;
1773
1774 i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid,
1775 edid->blocks * EDID_BLOCK_SIZE);
1776
1777 return 0;
1778 }
1779
1780 static int tc358743_s_edid(struct v4l2_subdev *sd,
1781 struct v4l2_subdev_edid *edid)
1782 {
1783 struct tc358743_state *state = to_state(sd);
1784 u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
1785 u16 pa;
1786 int err;
1787 int i;
1788
1789 v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
1790 __func__, edid->pad, edid->start_block, edid->blocks);
1791
1792 memset(edid->reserved, 0, sizeof(edid->reserved));
1793
1794 if (edid->pad != 0)
1795 return -EINVAL;
1796
1797 if (edid->start_block != 0)
1798 return -EINVAL;
1799
1800 if (edid->blocks > EDID_NUM_BLOCKS_MAX) {
1801 edid->blocks = EDID_NUM_BLOCKS_MAX;
1802 return -E2BIG;
1803 }
1804 pa = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1805 err = cec_phys_addr_validate(pa, &pa, NULL);
1806 if (err)
1807 return err;
1808
1809 cec_phys_addr_invalidate(state->cec_adap);
1810
1811 tc358743_disable_edid(sd);
1812
1813 i2c_wr8(sd, EDID_LEN1, edid_len & 0xff);
1814 i2c_wr8(sd, EDID_LEN2, edid_len >> 8);
1815
1816 if (edid->blocks == 0) {
1817 state->edid_blocks_written = 0;
1818 return 0;
1819 }
1820
1821 for (i = 0; i < edid_len; i += EDID_BLOCK_SIZE)
1822 i2c_wr(sd, EDID_RAM + i, edid->edid + i, EDID_BLOCK_SIZE);
1823
1824 state->edid_blocks_written = edid->blocks;
1825
1826 cec_s_phys_addr(state->cec_adap, pa, false);
1827
1828 if (tx_5v_power_present(sd))
1829 tc358743_enable_edid(sd);
1830
1831 return 0;
1832 }
1833
1834 /* -------------------------------------------------------------------------- */
1835
1836 static const struct v4l2_subdev_core_ops tc358743_core_ops = {
1837 .log_status = tc358743_log_status,
1838 #ifdef CONFIG_VIDEO_ADV_DEBUG
1839 .g_register = tc358743_g_register,
1840 .s_register = tc358743_s_register,
1841 #endif
1842 .interrupt_service_routine = tc358743_isr,
1843 .subscribe_event = tc358743_subscribe_event,
1844 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1845 };
1846
1847 static const struct v4l2_subdev_video_ops tc358743_video_ops = {
1848 .g_input_status = tc358743_g_input_status,
1849 .s_dv_timings = tc358743_s_dv_timings,
1850 .g_dv_timings = tc358743_g_dv_timings,
1851 .query_dv_timings = tc358743_query_dv_timings,
1852 .g_mbus_config = tc358743_g_mbus_config,
1853 .s_stream = tc358743_s_stream,
1854 };
1855
1856 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
1857 .enum_mbus_code = tc358743_enum_mbus_code,
1858 .set_fmt = tc358743_set_fmt,
1859 .get_fmt = tc358743_get_fmt,
1860 .get_edid = tc358743_g_edid,
1861 .set_edid = tc358743_s_edid,
1862 .enum_dv_timings = tc358743_enum_dv_timings,
1863 .dv_timings_cap = tc358743_dv_timings_cap,
1864 };
1865
1866 static const struct v4l2_subdev_ops tc358743_ops = {
1867 .core = &tc358743_core_ops,
1868 .video = &tc358743_video_ops,
1869 .pad = &tc358743_pad_ops,
1870 };
1871
1872 /* --------------- CUSTOM CTRLS --------------- */
1873
1874 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = {
1875 .id = TC358743_CID_AUDIO_SAMPLING_RATE,
1876 .name = "Audio sampling rate",
1877 .type = V4L2_CTRL_TYPE_INTEGER,
1878 .min = 0,
1879 .max = 768000,
1880 .step = 1,
1881 .def = 0,
1882 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1883 };
1884
1885 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = {
1886 .id = TC358743_CID_AUDIO_PRESENT,
1887 .name = "Audio present",
1888 .type = V4L2_CTRL_TYPE_BOOLEAN,
1889 .min = 0,
1890 .max = 1,
1891 .step = 1,
1892 .def = 0,
1893 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1894 };
1895
1896 /* --------------- PROBE / REMOVE --------------- */
1897
1898 #ifdef CONFIG_OF
1899 static void tc358743_gpio_reset(struct tc358743_state *state)
1900 {
1901 usleep_range(5000, 10000);
1902 gpiod_set_value(state->reset_gpio, 1);
1903 usleep_range(1000, 2000);
1904 gpiod_set_value(state->reset_gpio, 0);
1905 msleep(20);
1906 }
1907
1908 static int tc358743_probe_of(struct tc358743_state *state)
1909 {
1910 struct device *dev = &state->i2c_client->dev;
1911 struct v4l2_fwnode_endpoint *endpoint;
1912 struct device_node *ep;
1913 struct clk *refclk;
1914 u32 bps_pr_lane;
1915 int ret = -EINVAL;
1916
1917 refclk = devm_clk_get(dev, "refclk");
1918 if (IS_ERR(refclk)) {
1919 if (PTR_ERR(refclk) != -EPROBE_DEFER)
1920 dev_err(dev, "failed to get refclk: %ld\n",
1921 PTR_ERR(refclk));
1922 return PTR_ERR(refclk);
1923 }
1924
1925 ep = of_graph_get_next_endpoint(dev->of_node, NULL);
1926 if (!ep) {
1927 dev_err(dev, "missing endpoint node\n");
1928 return -EINVAL;
1929 }
1930
1931 endpoint = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep));
1932 if (IS_ERR(endpoint)) {
1933 dev_err(dev, "failed to parse endpoint\n");
1934 return PTR_ERR(endpoint);
1935 }
1936
1937 if (endpoint->bus_type != V4L2_MBUS_CSI2 ||
1938 endpoint->bus.mipi_csi2.num_data_lanes == 0 ||
1939 endpoint->nr_of_link_frequencies == 0) {
1940 dev_err(dev, "missing CSI-2 properties in endpoint\n");
1941 goto free_endpoint;
1942 }
1943
1944 if (endpoint->bus.mipi_csi2.num_data_lanes > 4) {
1945 dev_err(dev, "invalid number of lanes\n");
1946 goto free_endpoint;
1947 }
1948
1949 state->bus = endpoint->bus.mipi_csi2;
1950
1951 ret = clk_prepare_enable(refclk);
1952 if (ret) {
1953 dev_err(dev, "Failed! to enable clock\n");
1954 goto free_endpoint;
1955 }
1956
1957 state->pdata.refclk_hz = clk_get_rate(refclk);
1958 state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS;
1959 state->pdata.enable_hdcp = false;
1960 /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */
1961 state->pdata.fifo_level = 16;
1962 /*
1963 * The PLL input clock is obtained by dividing refclk by pll_prd.
1964 * It must be between 6 MHz and 40 MHz, lower frequency is better.
1965 */
1966 switch (state->pdata.refclk_hz) {
1967 case 26000000:
1968 case 27000000:
1969 case 42000000:
1970 state->pdata.pll_prd = state->pdata.refclk_hz / 6000000;
1971 break;
1972 default:
1973 dev_err(dev, "unsupported refclk rate: %u Hz\n",
1974 state->pdata.refclk_hz);
1975 goto disable_clk;
1976 }
1977
1978 /*
1979 * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps.
1980 * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60.
1981 */
1982 bps_pr_lane = 2 * endpoint->link_frequencies[0];
1983 if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) {
1984 dev_err(dev, "unsupported bps per lane: %u bps\n", bps_pr_lane);
1985 goto disable_clk;
1986 }
1987
1988 /* The CSI speed per lane is refclk / pll_prd * pll_fbd */
1989 state->pdata.pll_fbd = bps_pr_lane /
1990 state->pdata.refclk_hz * state->pdata.pll_prd;
1991
1992 /*
1993 * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz
1994 * link frequency). In principle it should be possible to calculate
1995 * them based on link frequency and resolution.
1996 */
1997 if (bps_pr_lane != 594000000U)
1998 dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
1999 state->pdata.lineinitcnt = 0xe80;
2000 state->pdata.lptxtimecnt = 0x003;
2001 /* tclk-preparecnt: 3, tclk-zerocnt: 20 */
2002 state->pdata.tclk_headercnt = 0x1403;
2003 state->pdata.tclk_trailcnt = 0x00;
2004 /* ths-preparecnt: 3, ths-zerocnt: 1 */
2005 state->pdata.ths_headercnt = 0x0103;
2006 state->pdata.twakeup = 0x4882;
2007 state->pdata.tclk_postcnt = 0x008;
2008 state->pdata.ths_trailcnt = 0x2;
2009 state->pdata.hstxvregcnt = 0;
2010
2011 state->reset_gpio = devm_gpiod_get_optional(dev, "reset",
2012 GPIOD_OUT_LOW);
2013 if (IS_ERR(state->reset_gpio)) {
2014 dev_err(dev, "failed to get reset gpio\n");
2015 ret = PTR_ERR(state->reset_gpio);
2016 goto disable_clk;
2017 }
2018
2019 if (state->reset_gpio)
2020 tc358743_gpio_reset(state);
2021
2022 ret = 0;
2023 goto free_endpoint;
2024
2025 disable_clk:
2026 clk_disable_unprepare(refclk);
2027 free_endpoint:
2028 v4l2_fwnode_endpoint_free(endpoint);
2029 return ret;
2030 }
2031 #else
2032 static inline int tc358743_probe_of(struct tc358743_state *state)
2033 {
2034 return -ENODEV;
2035 }
2036 #endif
2037
2038 static int tc358743_probe(struct i2c_client *client,
2039 const struct i2c_device_id *id)
2040 {
2041 static struct v4l2_dv_timings default_timing =
2042 V4L2_DV_BT_CEA_640X480P59_94;
2043 struct tc358743_state *state;
2044 struct tc358743_platform_data *pdata = client->dev.platform_data;
2045 struct v4l2_subdev *sd;
2046 u16 irq_mask = MASK_HDMI_MSK | MASK_CSI_MSK;
2047 int err;
2048
2049 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2050 return -EIO;
2051 v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n",
2052 client->addr << 1, client->adapter->name);
2053
2054 state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state),
2055 GFP_KERNEL);
2056 if (!state)
2057 return -ENOMEM;
2058
2059 state->i2c_client = client;
2060
2061 /* platform data */
2062 if (pdata) {
2063 state->pdata = *pdata;
2064 state->bus.flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
2065 } else {
2066 err = tc358743_probe_of(state);
2067 if (err == -ENODEV)
2068 v4l_err(client, "No platform data!\n");
2069 if (err)
2070 return err;
2071 }
2072
2073 sd = &state->sd;
2074 v4l2_i2c_subdev_init(sd, client, &tc358743_ops);
2075 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
2076
2077 /* i2c access */
2078 if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
2079 v4l2_info(sd, "not a TC358743 on address 0x%x\n",
2080 client->addr << 1);
2081 return -ENODEV;
2082 }
2083
2084 /* control handlers */
2085 v4l2_ctrl_handler_init(&state->hdl, 3);
2086
2087 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL,
2088 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
2089
2090 /* custom controls */
2091 state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2092 &tc358743_ctrl_audio_sampling_rate, NULL);
2093
2094 state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2095 &tc358743_ctrl_audio_present, NULL);
2096
2097 sd->ctrl_handler = &state->hdl;
2098 if (state->hdl.error) {
2099 err = state->hdl.error;
2100 goto err_hdl;
2101 }
2102
2103 if (tc358743_update_controls(sd)) {
2104 err = -ENODEV;
2105 goto err_hdl;
2106 }
2107
2108 state->pad.flags = MEDIA_PAD_FL_SOURCE;
2109 sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
2110 err = media_entity_pads_init(&sd->entity, 1, &state->pad);
2111 if (err < 0)
2112 goto err_hdl;
2113
2114 state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
2115
2116 sd->dev = &client->dev;
2117 err = v4l2_async_register_subdev(sd);
2118 if (err < 0)
2119 goto err_hdl;
2120
2121 mutex_init(&state->confctl_mutex);
2122
2123 INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
2124 tc358743_delayed_work_enable_hotplug);
2125
2126 #ifdef CONFIG_VIDEO_TC358743_CEC
2127 state->cec_adap = cec_allocate_adapter(&tc358743_cec_adap_ops,
2128 state, dev_name(&client->dev),
2129 CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, CEC_MAX_LOG_ADDRS);
2130 if (IS_ERR(state->cec_adap)) {
2131 err = PTR_ERR(state->cec_adap);
2132 goto err_hdl;
2133 }
2134 irq_mask |= MASK_CEC_RMSK | MASK_CEC_TMSK;
2135 #endif
2136
2137 tc358743_initial_setup(sd);
2138
2139 tc358743_s_dv_timings(sd, &default_timing);
2140
2141 tc358743_set_csi_color_space(sd);
2142
2143 tc358743_init_interrupts(sd);
2144
2145 if (state->i2c_client->irq) {
2146 err = devm_request_threaded_irq(&client->dev,
2147 state->i2c_client->irq,
2148 NULL, tc358743_irq_handler,
2149 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
2150 "tc358743", state);
2151 if (err)
2152 goto err_work_queues;
2153 } else {
2154 INIT_WORK(&state->work_i2c_poll,
2155 tc358743_work_i2c_poll);
2156 timer_setup(&state->timer, tc358743_irq_poll_timer, 0);
2157 state->timer.expires = jiffies +
2158 msecs_to_jiffies(POLL_INTERVAL_MS);
2159 add_timer(&state->timer);
2160 }
2161
2162 err = cec_register_adapter(state->cec_adap, &client->dev);
2163 if (err < 0) {
2164 pr_err("%s: failed to register the cec device\n", __func__);
2165 cec_delete_adapter(state->cec_adap);
2166 state->cec_adap = NULL;
2167 goto err_work_queues;
2168 }
2169
2170 tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
2171 i2c_wr16(sd, INTMASK, ~irq_mask);
2172
2173 err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
2174 if (err)
2175 goto err_work_queues;
2176
2177 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
2178 client->addr << 1, client->adapter->name);
2179
2180 return 0;
2181
2182 err_work_queues:
2183 cec_unregister_adapter(state->cec_adap);
2184 if (!state->i2c_client->irq)
2185 flush_work(&state->work_i2c_poll);
2186 cancel_delayed_work(&state->delayed_work_enable_hotplug);
2187 mutex_destroy(&state->confctl_mutex);
2188 err_hdl:
2189 media_entity_cleanup(&sd->entity);
2190 v4l2_ctrl_handler_free(&state->hdl);
2191 return err;
2192 }
2193
2194 static int tc358743_remove(struct i2c_client *client)
2195 {
2196 struct v4l2_subdev *sd = i2c_get_clientdata(client);
2197 struct tc358743_state *state = to_state(sd);
2198
2199 if (!state->i2c_client->irq) {
2200 del_timer_sync(&state->timer);
2201 flush_work(&state->work_i2c_poll);
2202 }
2203 cancel_delayed_work(&state->delayed_work_enable_hotplug);
2204 cec_unregister_adapter(state->cec_adap);
2205 v4l2_async_unregister_subdev(sd);
2206 v4l2_device_unregister_subdev(sd);
2207 mutex_destroy(&state->confctl_mutex);
2208 media_entity_cleanup(&sd->entity);
2209 v4l2_ctrl_handler_free(&state->hdl);
2210
2211 return 0;
2212 }
2213
2214 static const struct i2c_device_id tc358743_id[] = {
2215 {"tc358743", 0},
2216 {}
2217 };
2218
2219 MODULE_DEVICE_TABLE(i2c, tc358743_id);
2220
2221 #if IS_ENABLED(CONFIG_OF)
2222 static const struct of_device_id tc358743_of_match[] = {
2223 { .compatible = "toshiba,tc358743" },
2224 {},
2225 };
2226 MODULE_DEVICE_TABLE(of, tc358743_of_match);
2227 #endif
2228
2229 static struct i2c_driver tc358743_driver = {
2230 .driver = {
2231 .name = "tc358743",
2232 .of_match_table = of_match_ptr(tc358743_of_match),
2233 },
2234 .probe = tc358743_probe,
2235 .remove = tc358743_remove,
2236 .id_table = tc358743_id,
2237 };
2238
2239 module_i2c_driver(tc358743_driver);
CRIS linux kernel tree