1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * tc358743 - Toshiba HDMI to CSI-2 bridge
4 *
5 * Copyright 2015 Cisco Systems, Inc. and/or its affiliates. All rights
6 * reserved.
7 */
8
9 /*
10 * References (c = chapter, p = page):
11 * REF_01 - Toshiba, TC358743XBG (H2C), Functional Specification, Rev 0.60
12 * REF_02 - Toshiba, TC358743XBG_HDMI-CSI_Tv11p_nm.xls
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/i2c.h>
19 #include <linux/clk.h>
20 #include <linux/delay.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/interrupt.h>
23 #include <linux/timer.h>
24 #include <linux/of_graph.h>
25 #include <linux/videodev2.h>
26 #include <linux/workqueue.h>
27 #include <linux/v4l2-dv-timings.h>
28 #include <linux/hdmi.h>
29 #include <media/cec.h>
30 #include <media/v4l2-dv-timings.h>
31 #include <media/v4l2-device.h>
32 #include <media/v4l2-ctrls.h>
33 #include <media/v4l2-event.h>
34 #include <media/v4l2-fwnode.h>
35 #include <media/i2c/tc358743.h>
36
37 #include "tc358743_regs.h"
38
39 static int debug;
40 module_param(debug, int, 0644);
41 MODULE_PARM_DESC(debug, "debug level (0-3)");
42
43 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver");
44 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>");
45 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>");
46 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>");
47 MODULE_LICENSE("GPL");
48
49 #define EDID_NUM_BLOCKS_MAX 8
50 #define EDID_BLOCK_SIZE 128
51
52 #define I2C_MAX_XFER_SIZE (EDID_BLOCK_SIZE + 2)
53
54 #define POLL_INTERVAL_CEC_MS 10
55 #define POLL_INTERVAL_MS 1000
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(640, 1920, 350, 1200, 13000000, 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_mbus_config_mipi_csi2 bus;
73 struct v4l2_subdev sd;
74 struct media_pad pad;
75 struct v4l2_ctrl_handler hdl;
76 struct i2c_client *i2c_client;
77 /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */
78 struct mutex confctl_mutex;
79
80 /* controls */
81 struct v4l2_ctrl *detect_tx_5v_ctrl;
82 struct v4l2_ctrl *audio_sampling_rate_ctrl;
83 struct v4l2_ctrl *audio_present_ctrl;
84
85 struct delayed_work delayed_work_enable_hotplug;
86
87 struct timer_list timer;
88 struct work_struct work_i2c_poll;
89
90 /* edid */
91 u8 edid_blocks_written;
92
93 struct v4l2_dv_timings timings;
94 u32 mbus_fmt_code;
95 u8 csi_lanes_in_use;
96
97 struct gpio_desc *reset_gpio;
98
99 struct cec_adapter *cec_adap;
100 };
101
102 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
103 bool cable_connected);
104 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
105
to_state(struct v4l2_subdev * sd)106 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd)
107 {
108 return container_of(sd, struct tc358743_state, sd);
109 }
110
111 /* --------------- I2C --------------- */
112
i2c_rd(struct v4l2_subdev * sd,u16 reg,u8 * values,u32 n)113 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
114 {
115 struct tc358743_state *state = to_state(sd);
116 struct i2c_client *client = state->i2c_client;
117 int err;
118 u8 buf[2] = { reg >> 8, reg & 0xff };
119 struct i2c_msg msgs[] = {
120 {
121 .addr = client->addr,
122 .flags = 0,
123 .len = 2,
124 .buf = buf,
125 },
126 {
127 .addr = client->addr,
128 .flags = I2C_M_RD,
129 .len = n,
130 .buf = values,
131 },
132 };
133
134 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
135 if (err != ARRAY_SIZE(msgs)) {
136 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed: %d\n",
137 __func__, reg, client->addr, err);
138 }
139 }
140
i2c_wr(struct v4l2_subdev * sd,u16 reg,u8 * values,u32 n)141 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
142 {
143 struct tc358743_state *state = to_state(sd);
144 struct i2c_client *client = state->i2c_client;
145 int err, i;
146 struct i2c_msg msg;
147 u8 data[I2C_MAX_XFER_SIZE];
148
149 if ((2 + n) > I2C_MAX_XFER_SIZE) {
150 n = I2C_MAX_XFER_SIZE - 2;
151 v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n",
152 reg, 2 + n);
153 }
154
155 msg.addr = client->addr;
156 msg.buf = data;
157 msg.len = 2 + n;
158 msg.flags = 0;
159
160 data[0] = reg >> 8;
161 data[1] = reg & 0xff;
162
163 for (i = 0; i < n; i++)
164 data[2 + i] = values[i];
165
166 err = i2c_transfer(client->adapter, &msg, 1);
167 if (err != 1) {
168 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed: %d\n",
169 __func__, reg, client->addr, err);
170 return;
171 }
172
173 if (debug < 3)
174 return;
175
176 switch (n) {
177 case 1:
178 v4l2_info(sd, "I2C write 0x%04x = 0x%02x",
179 reg, data[2]);
180 break;
181 case 2:
182 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x",
183 reg, data[3], data[2]);
184 break;
185 case 4:
186 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x",
187 reg, data[5], data[4], data[3], data[2]);
188 break;
189 default:
190 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
191 n, reg);
192 }
193 }
194
i2c_rdreg(struct v4l2_subdev * sd,u16 reg,u32 n)195 static noinline u32 i2c_rdreg(struct v4l2_subdev *sd, u16 reg, u32 n)
196 {
197 __le32 val = 0;
198
199 i2c_rd(sd, reg, (u8 __force *)&val, n);
200
201 return le32_to_cpu(val);
202 }
203
i2c_wrreg(struct v4l2_subdev * sd,u16 reg,u32 val,u32 n)204 static noinline void i2c_wrreg(struct v4l2_subdev *sd, u16 reg, u32 val, u32 n)
205 {
206 __le32 raw = cpu_to_le32(val);
207
208 i2c_wr(sd, reg, (u8 __force *)&raw, n);
209 }
210
i2c_rd8(struct v4l2_subdev * sd,u16 reg)211 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
212 {
213 return i2c_rdreg(sd, reg, 1);
214 }
215
i2c_wr8(struct v4l2_subdev * sd,u16 reg,u8 val)216 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
217 {
218 i2c_wrreg(sd, reg, val, 1);
219 }
220
i2c_wr8_and_or(struct v4l2_subdev * sd,u16 reg,u8 mask,u8 val)221 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
222 u8 mask, u8 val)
223 {
224 i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 1) & mask) | val, 1);
225 }
226
i2c_rd16(struct v4l2_subdev * sd,u16 reg)227 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
228 {
229 return i2c_rdreg(sd, reg, 2);
230 }
231
i2c_wr16(struct v4l2_subdev * sd,u16 reg,u16 val)232 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
233 {
234 i2c_wrreg(sd, reg, val, 2);
235 }
236
i2c_wr16_and_or(struct v4l2_subdev * sd,u16 reg,u16 mask,u16 val)237 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
238 {
239 i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 2) & mask) | val, 2);
240 }
241
i2c_rd32(struct v4l2_subdev * sd,u16 reg)242 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)
243 {
244 return i2c_rdreg(sd, reg, 4);
245 }
246
i2c_wr32(struct v4l2_subdev * sd,u16 reg,u32 val)247 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val)
248 {
249 i2c_wrreg(sd, reg, val, 4);
250 }
251
252 /* --------------- STATUS --------------- */
253
is_hdmi(struct v4l2_subdev * sd)254 static inline bool is_hdmi(struct v4l2_subdev *sd)
255 {
256 return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
257 }
258
tx_5v_power_present(struct v4l2_subdev * sd)259 static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
260 {
261 return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
262 }
263
no_signal(struct v4l2_subdev * sd)264 static inline bool no_signal(struct v4l2_subdev *sd)
265 {
266 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
267 }
268
no_sync(struct v4l2_subdev * sd)269 static inline bool no_sync(struct v4l2_subdev *sd)
270 {
271 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);
272 }
273
audio_present(struct v4l2_subdev * sd)274 static inline bool audio_present(struct v4l2_subdev *sd)
275 {
276 return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE;
277 }
278
get_audio_sampling_rate(struct v4l2_subdev * sd)279 static int get_audio_sampling_rate(struct v4l2_subdev *sd)
280 {
281 static const int code_to_rate[] = {
282 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
283 88200, 768000, 96000, 705600, 176400, 0, 192000, 0
284 };
285
286 /* Register FS_SET is not cleared when the cable is disconnected */
287 if (no_signal(sd))
288 return 0;
289
290 return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS];
291 }
292
293 /* --------------- TIMINGS --------------- */
294
fps(const struct v4l2_bt_timings * t)295 static inline unsigned fps(const struct v4l2_bt_timings *t)
296 {
297 if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
298 return 0;
299
300 return DIV_ROUND_CLOSEST((unsigned)t->pixelclock,
301 V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
302 }
303
tc358743_get_detected_timings(struct v4l2_subdev * sd,struct v4l2_dv_timings * timings)304 static int tc358743_get_detected_timings(struct v4l2_subdev *sd,
305 struct v4l2_dv_timings *timings)
306 {
307 struct v4l2_bt_timings *bt = &timings->bt;
308 unsigned width, height, frame_width, frame_height, frame_interval, fps;
309
310 memset(timings, 0, sizeof(struct v4l2_dv_timings));
311
312 if (no_signal(sd)) {
313 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
314 return -ENOLINK;
315 }
316 if (no_sync(sd)) {
317 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__);
318 return -ENOLCK;
319 }
320
321 timings->type = V4L2_DV_BT_656_1120;
322 bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ?
323 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
324
325 width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) +
326 i2c_rd8(sd, DE_WIDTH_H_LO);
327 height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) +
328 i2c_rd8(sd, DE_WIDTH_V_LO);
329 frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) +
330 i2c_rd8(sd, H_SIZE_LO);
331 frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) +
332 i2c_rd8(sd, V_SIZE_LO)) / 2;
333 /* frame interval in milliseconds * 10
334 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */
335 frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) +
336 i2c_rd8(sd, FV_CNT_LO);
337 fps = (frame_interval > 0) ?
338 DIV_ROUND_CLOSEST(10000, frame_interval) : 0;
339
340 bt->width = width;
341 bt->height = height;
342 bt->vsync = frame_height - height;
343 bt->hsync = frame_width - width;
344 bt->pixelclock = frame_width * frame_height * fps;
345 if (bt->interlaced == V4L2_DV_INTERLACED) {
346 bt->height *= 2;
347 bt->il_vsync = bt->vsync + 1;
348 bt->pixelclock /= 2;
349 }
350
351 return 0;
352 }
353
354 /* --------------- HOTPLUG / HDCP / EDID --------------- */
355
tc358743_delayed_work_enable_hotplug(struct work_struct * work)356 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work)
357 {
358 struct delayed_work *dwork = to_delayed_work(work);
359 struct tc358743_state *state = container_of(dwork,
360 struct tc358743_state, delayed_work_enable_hotplug);
361 struct v4l2_subdev *sd = &state->sd;
362
363 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
364
365 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0);
366 }
367
tc358743_set_hdmi_hdcp(struct v4l2_subdev * sd,bool enable)368 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable)
369 {
370 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ?
371 "enable" : "disable");
372
373 if (enable) {
374 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, KEY_RD_CMD);
375
376 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION, 0);
377
378 i2c_wr8_and_or(sd, HDCP_REG1, 0xff,
379 MASK_AUTH_UNAUTH_SEL_16_FRAMES |
380 MASK_AUTH_UNAUTH_AUTO);
381
382 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET,
383 SET_AUTO_P3_RESET_FRAMES(0x0f));
384 } else {
385 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION,
386 MASK_MANUAL_AUTHENTICATION);
387 }
388 }
389
tc358743_disable_edid(struct v4l2_subdev * sd)390 static void tc358743_disable_edid(struct v4l2_subdev *sd)
391 {
392 struct tc358743_state *state = to_state(sd);
393
394 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
395
396 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
397
398 /* DDC access to EDID is also disabled when hotplug is disabled. See
399 * register DDC_CTL */
400 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0);
401 }
402
tc358743_enable_edid(struct v4l2_subdev * sd)403 static void tc358743_enable_edid(struct v4l2_subdev *sd)
404 {
405 struct tc358743_state *state = to_state(sd);
406
407 if (state->edid_blocks_written == 0) {
408 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__);
409 tc358743_s_ctrl_detect_tx_5v(sd);
410 return;
411 }
412
413 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
414
415 /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when
416 * hotplug is enabled. See register DDC_CTL */
417 schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 10);
418
419 tc358743_enable_interrupts(sd, true);
420 tc358743_s_ctrl_detect_tx_5v(sd);
421 }
422
tc358743_erase_bksv(struct v4l2_subdev * sd)423 static void tc358743_erase_bksv(struct v4l2_subdev *sd)
424 {
425 int i;
426
427 for (i = 0; i < 5; i++)
428 i2c_wr8(sd, BKSV + i, 0);
429 }
430
431 /* --------------- AVI infoframe --------------- */
432
print_avi_infoframe(struct v4l2_subdev * sd)433 static void print_avi_infoframe(struct v4l2_subdev *sd)
434 {
435 struct i2c_client *client = v4l2_get_subdevdata(sd);
436 struct device *dev = &client->dev;
437 union hdmi_infoframe frame;
438 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
439
440 if (!is_hdmi(sd)) {
441 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
442 return;
443 }
444
445 i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI));
446
447 if (hdmi_infoframe_unpack(&frame, buffer, sizeof(buffer)) < 0) {
448 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__);
449 return;
450 }
451
452 hdmi_infoframe_log(KERN_INFO, dev, &frame);
453 }
454
455 /* --------------- CTRLS --------------- */
456
tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev * sd)457 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
458 {
459 struct tc358743_state *state = to_state(sd);
460
461 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
462 tx_5v_power_present(sd));
463 }
464
tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev * sd)465 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
466 {
467 struct tc358743_state *state = to_state(sd);
468
469 return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl,
470 get_audio_sampling_rate(sd));
471 }
472
tc358743_s_ctrl_audio_present(struct v4l2_subdev * sd)473 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd)
474 {
475 struct tc358743_state *state = to_state(sd);
476
477 return v4l2_ctrl_s_ctrl(state->audio_present_ctrl,
478 audio_present(sd));
479 }
480
tc358743_update_controls(struct v4l2_subdev * sd)481 static int tc358743_update_controls(struct v4l2_subdev *sd)
482 {
483 int ret = 0;
484
485 ret |= tc358743_s_ctrl_detect_tx_5v(sd);
486 ret |= tc358743_s_ctrl_audio_sampling_rate(sd);
487 ret |= tc358743_s_ctrl_audio_present(sd);
488
489 return ret;
490 }
491
492 /* --------------- INIT --------------- */
493
tc358743_reset_phy(struct v4l2_subdev * sd)494 static void tc358743_reset_phy(struct v4l2_subdev *sd)
495 {
496 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
497
498 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0);
499 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL);
500 }
501
tc358743_reset(struct v4l2_subdev * sd,uint16_t mask)502 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask)
503 {
504 u16 sysctl = i2c_rd16(sd, SYSCTL);
505
506 i2c_wr16(sd, SYSCTL, sysctl | mask);
507 i2c_wr16(sd, SYSCTL, sysctl & ~mask);
508 }
509
tc358743_sleep_mode(struct v4l2_subdev * sd,bool enable)510 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable)
511 {
512 i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP,
513 enable ? MASK_SLEEP : 0);
514 }
515
enable_stream(struct v4l2_subdev * sd,bool enable)516 static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
517 {
518 struct tc358743_state *state = to_state(sd);
519
520 v4l2_dbg(3, debug, sd, "%s: %sable\n",
521 __func__, enable ? "en" : "dis");
522
523 if (enable) {
524 /* It is critical for CSI receiver to see lane transition
525 * LP11->HS. Set to non-continuous mode to enable clock lane
526 * LP11 state. */
527 i2c_wr32(sd, TXOPTIONCNTRL, 0);
528 /* Set to continuous mode to trigger LP11->HS transition */
529 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
530 /* Unmute video */
531 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE);
532 } else {
533 /* Mute video so that all data lanes go to LSP11 state.
534 * No data is output to CSI Tx block. */
535 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE);
536 }
537
538 mutex_lock(&state->confctl_mutex);
539 i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN),
540 enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0);
541 mutex_unlock(&state->confctl_mutex);
542 }
543
tc358743_set_pll(struct v4l2_subdev * sd)544 static void tc358743_set_pll(struct v4l2_subdev *sd)
545 {
546 struct tc358743_state *state = to_state(sd);
547 struct tc358743_platform_data *pdata = &state->pdata;
548 u16 pllctl0 = i2c_rd16(sd, PLLCTL0);
549 u16 pllctl1 = i2c_rd16(sd, PLLCTL1);
550 u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) |
551 SET_PLL_FBD(pdata->pll_fbd);
552 u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
553
554 v4l2_dbg(2, debug, sd, "%s:\n", __func__);
555
556 /* Only rewrite when needed (new value or disabled), since rewriting
557 * triggers another format change event. */
558 if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) {
559 u16 pll_frs;
560
561 if (hsck > 500000000)
562 pll_frs = 0x0;
563 else if (hsck > 250000000)
564 pll_frs = 0x1;
565 else if (hsck > 125000000)
566 pll_frs = 0x2;
567 else
568 pll_frs = 0x3;
569
570 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__);
571 tc358743_sleep_mode(sd, true);
572 i2c_wr16(sd, PLLCTL0, pllctl0_new);
573 i2c_wr16_and_or(sd, PLLCTL1,
574 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN),
575 (SET_PLL_FRS(pll_frs) | MASK_RESETB |
576 MASK_PLL_EN));
577 udelay(10); /* REF_02, Sheet "Source HDMI" */
578 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN);
579 tc358743_sleep_mode(sd, false);
580 }
581 }
582
tc358743_set_ref_clk(struct v4l2_subdev * sd)583 static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
584 {
585 struct tc358743_state *state = to_state(sd);
586 struct tc358743_platform_data *pdata = &state->pdata;
587 u32 sys_freq;
588 u32 lockdet_ref;
589 u32 cec_freq;
590 u16 fh_min;
591 u16 fh_max;
592
593 BUG_ON(!(pdata->refclk_hz == 26000000 ||
594 pdata->refclk_hz == 27000000 ||
595 pdata->refclk_hz == 42000000));
596
597 sys_freq = pdata->refclk_hz / 10000;
598 i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00ff);
599 i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xff00) >> 8);
600
601 i2c_wr8_and_or(sd, PHY_CTL0, ~MASK_PHY_SYSCLK_IND,
602 (pdata->refclk_hz == 42000000) ?
603 MASK_PHY_SYSCLK_IND : 0x0);
604
605 fh_min = pdata->refclk_hz / 100000;
606 i2c_wr8(sd, FH_MIN0, fh_min & 0x00ff);
607 i2c_wr8(sd, FH_MIN1, (fh_min & 0xff00) >> 8);
608
609 fh_max = (fh_min * 66) / 10;
610 i2c_wr8(sd, FH_MAX0, fh_max & 0x00ff);
611 i2c_wr8(sd, FH_MAX1, (fh_max & 0xff00) >> 8);
612
613 lockdet_ref = pdata->refclk_hz / 100;
614 i2c_wr8(sd, LOCKDET_REF0, lockdet_ref & 0x0000ff);
615 i2c_wr8(sd, LOCKDET_REF1, (lockdet_ref & 0x00ff00) >> 8);
616 i2c_wr8(sd, LOCKDET_REF2, (lockdet_ref & 0x0f0000) >> 16);
617
618 i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD,
619 (pdata->refclk_hz == 27000000) ?
620 MASK_NCO_F0_MOD_27MHZ : 0x0);
621
622 /*
623 * Trial and error suggests that the default register value
624 * of 656 is for a 42 MHz reference clock. Use that to derive
625 * a new value based on the actual reference clock.
626 */
627 cec_freq = (656 * sys_freq) / 4200;
628 i2c_wr16(sd, CECHCLK, cec_freq);
629 i2c_wr16(sd, CECLCLK, cec_freq);
630 }
631
tc358743_set_csi_color_space(struct v4l2_subdev * sd)632 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
633 {
634 struct tc358743_state *state = to_state(sd);
635
636 switch (state->mbus_fmt_code) {
637 case MEDIA_BUS_FMT_UYVY8_1X16:
638 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__);
639 i2c_wr8_and_or(sd, VOUT_SET2,
640 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
641 MASK_SEL422 | MASK_VOUT_422FIL_100);
642 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
643 MASK_VOUT_COLOR_601_YCBCR_LIMITED);
644 mutex_lock(&state->confctl_mutex);
645 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
646 MASK_YCBCRFMT_422_8_BIT);
647 mutex_unlock(&state->confctl_mutex);
648 break;
649 case MEDIA_BUS_FMT_RGB888_1X24:
650 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__);
651 i2c_wr8_and_or(sd, VOUT_SET2,
652 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
653 0x00);
654 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
655 MASK_VOUT_COLOR_RGB_FULL);
656 mutex_lock(&state->confctl_mutex);
657 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
658 mutex_unlock(&state->confctl_mutex);
659 break;
660 default:
661 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n",
662 __func__, state->mbus_fmt_code);
663 }
664 }
665
tc358743_num_csi_lanes_needed(struct v4l2_subdev * sd)666 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd)
667 {
668 struct tc358743_state *state = to_state(sd);
669 struct v4l2_bt_timings *bt = &state->timings.bt;
670 struct tc358743_platform_data *pdata = &state->pdata;
671 u32 bits_pr_pixel =
672 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24;
673 u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel;
674 u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
675
676 return DIV_ROUND_UP(bps, bps_pr_lane);
677 }
678
tc358743_set_csi(struct v4l2_subdev * sd)679 static void tc358743_set_csi(struct v4l2_subdev *sd)
680 {
681 struct tc358743_state *state = to_state(sd);
682 struct tc358743_platform_data *pdata = &state->pdata;
683 unsigned lanes = tc358743_num_csi_lanes_needed(sd);
684
685 v4l2_dbg(3, debug, sd, "%s:\n", __func__);
686
687 state->csi_lanes_in_use = lanes;
688
689 tc358743_reset(sd, MASK_CTXRST);
690
691 if (lanes < 1)
692 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE);
693 if (lanes < 1)
694 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE);
695 if (lanes < 2)
696 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE);
697 if (lanes < 3)
698 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE);
699 if (lanes < 4)
700 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE);
701
702 i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt);
703 i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt);
704 i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt);
705 i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt);
706 i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt);
707 i2c_wr32(sd, TWAKEUP, pdata->twakeup);
708 i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt);
709 i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt);
710 i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt);
711
712 i2c_wr32(sd, HSTXVREGEN,
713 ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) |
714 ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) |
715 ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) |
716 ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) |
717 ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0));
718
719 i2c_wr32(sd, TXOPTIONCNTRL, (state->bus.flags &
720 V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK) ? 0 : MASK_CONTCLKMODE);
721 i2c_wr32(sd, STARTCNTRL, MASK_START);
722 i2c_wr32(sd, CSI_START, MASK_STRT);
723
724 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
725 MASK_ADDRESS_CSI_CONTROL |
726 MASK_CSI_MODE |
727 MASK_TXHSMD |
728 ((lanes == 4) ? MASK_NOL_4 :
729 (lanes == 3) ? MASK_NOL_3 :
730 (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1));
731
732 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
733 MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK |
734 MASK_WCER | MASK_INER);
735
736 i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR |
737 MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK);
738
739 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
740 MASK_ADDRESS_CSI_INT_ENA | MASK_INTER);
741 }
742
tc358743_set_hdmi_phy(struct v4l2_subdev * sd)743 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd)
744 {
745 struct tc358743_state *state = to_state(sd);
746 struct tc358743_platform_data *pdata = &state->pdata;
747
748 /* Default settings from REF_02, sheet "Source HDMI"
749 * and custom settings as platform data */
750 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0);
751 i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) |
752 SET_FREQ_RANGE_MODE_CYCLES(1));
753 i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn,
754 (pdata->hdmi_phy_auto_reset_tmds_detected ?
755 MASK_PHY_AUTO_RST2 : 0) |
756 (pdata->hdmi_phy_auto_reset_tmds_in_range ?
757 MASK_PHY_AUTO_RST3 : 0) |
758 (pdata->hdmi_phy_auto_reset_tmds_valid ?
759 MASK_PHY_AUTO_RST4 : 0));
760 i2c_wr8(sd, PHY_BIAS, 0x40);
761 i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a));
762 i2c_wr8(sd, AVM_CTL, 45);
763 i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V,
764 pdata->hdmi_detection_delay << 4);
765 i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST),
766 (pdata->hdmi_phy_auto_reset_hsync_out_of_range ?
767 MASK_H_PI_RST : 0) |
768 (pdata->hdmi_phy_auto_reset_vsync_out_of_range ?
769 MASK_V_PI_RST : 0));
770 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY);
771 }
772
tc358743_set_hdmi_audio(struct v4l2_subdev * sd)773 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd)
774 {
775 struct tc358743_state *state = to_state(sd);
776
777 /* Default settings from REF_02, sheet "Source HDMI" */
778 i2c_wr8(sd, FORCE_MUTE, 0x00);
779 i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 |
780 MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 |
781 MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0);
782 i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9);
783 i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2);
784 i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500));
785 i2c_wr8(sd, FS_MUTE, 0x00);
786 i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE);
787 i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE);
788 i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM);
789 i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM);
790 i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S);
791 i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100));
792
793 mutex_lock(&state->confctl_mutex);
794 i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 |
795 MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX);
796 mutex_unlock(&state->confctl_mutex);
797 }
798
tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev * sd)799 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd)
800 {
801 /* Default settings from REF_02, sheet "Source HDMI" */
802 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE |
803 MASK_ACP_INT_MODE | MASK_VS_INT_MODE |
804 MASK_SPD_INT_MODE | MASK_MS_INT_MODE |
805 MASK_AUD_INT_MODE | MASK_AVI_INT_MODE);
806 i2c_wr8(sd, NO_PKT_LIMIT, 0x2c);
807 i2c_wr8(sd, NO_PKT_CLR, 0x53);
808 i2c_wr8(sd, ERR_PK_LIMIT, 0x01);
809 i2c_wr8(sd, NO_PKT_LIMIT2, 0x30);
810 i2c_wr8(sd, NO_GDB_LIMIT, 0x10);
811 }
812
tc358743_initial_setup(struct v4l2_subdev * sd)813 static void tc358743_initial_setup(struct v4l2_subdev *sd)
814 {
815 struct tc358743_state *state = to_state(sd);
816 struct tc358743_platform_data *pdata = &state->pdata;
817
818 /*
819 * IR is not supported by this driver.
820 * CEC is only enabled if needed.
821 */
822 i2c_wr16_and_or(sd, SYSCTL, ~(MASK_IRRST | MASK_CECRST),
823 (MASK_IRRST | MASK_CECRST));
824
825 tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
826 #ifdef CONFIG_VIDEO_TC358743_CEC
827 tc358743_reset(sd, MASK_CECRST);
828 #endif
829 tc358743_sleep_mode(sd, false);
830
831 i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
832
833 tc358743_set_ref_clk(sd);
834
835 i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE,
836 pdata->ddc5v_delay & MASK_DDC5V_MODE);
837 i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC);
838
839 tc358743_set_hdmi_phy(sd);
840 tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp);
841 tc358743_set_hdmi_audio(sd);
842 tc358743_set_hdmi_info_frame_mode(sd);
843
844 /* All CE and IT formats are detected as RGB full range in DVI mode */
845 i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0);
846
847 i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE,
848 MASK_VOUTCOLORMODE_AUTO);
849 i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
850 }
851
852 /* --------------- CEC --------------- */
853
854 #ifdef CONFIG_VIDEO_TC358743_CEC
tc358743_cec_adap_enable(struct cec_adapter * adap,bool enable)855 static int tc358743_cec_adap_enable(struct cec_adapter *adap, bool enable)
856 {
857 struct tc358743_state *state = adap->priv;
858 struct v4l2_subdev *sd = &state->sd;
859
860 i2c_wr32(sd, CECIMSK, enable ? MASK_CECTIM | MASK_CECRIM : 0);
861 i2c_wr32(sd, CECICLR, MASK_CECTICLR | MASK_CECRICLR);
862 i2c_wr32(sd, CECEN, enable);
863 if (enable)
864 i2c_wr32(sd, CECREN, MASK_CECREN);
865 return 0;
866 }
867
tc358743_cec_adap_monitor_all_enable(struct cec_adapter * adap,bool enable)868 static int tc358743_cec_adap_monitor_all_enable(struct cec_adapter *adap,
869 bool enable)
870 {
871 struct tc358743_state *state = adap->priv;
872 struct v4l2_subdev *sd = &state->sd;
873 u32 reg;
874
875 reg = i2c_rd32(sd, CECRCTL1);
876 if (enable)
877 reg |= MASK_CECOTH;
878 else
879 reg &= ~MASK_CECOTH;
880 i2c_wr32(sd, CECRCTL1, reg);
881 return 0;
882 }
883
tc358743_cec_adap_log_addr(struct cec_adapter * adap,u8 log_addr)884 static int tc358743_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
885 {
886 struct tc358743_state *state = adap->priv;
887 struct v4l2_subdev *sd = &state->sd;
888 unsigned int la = 0;
889
890 if (log_addr != CEC_LOG_ADDR_INVALID) {
891 la = i2c_rd32(sd, CECADD);
892 la |= 1 << log_addr;
893 }
894 i2c_wr32(sd, CECADD, la);
895 return 0;
896 }
897
tc358743_cec_adap_transmit(struct cec_adapter * adap,u8 attempts,u32 signal_free_time,struct cec_msg * msg)898 static int tc358743_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
899 u32 signal_free_time, struct cec_msg *msg)
900 {
901 struct tc358743_state *state = adap->priv;
902 struct v4l2_subdev *sd = &state->sd;
903 unsigned int i;
904
905 i2c_wr32(sd, CECTCTL,
906 (cec_msg_is_broadcast(msg) ? MASK_CECBRD : 0) |
907 (signal_free_time - 1));
908 for (i = 0; i < msg->len; i++)
909 i2c_wr32(sd, CECTBUF1 + i * 4,
910 msg->msg[i] | ((i == msg->len - 1) ? MASK_CECTEOM : 0));
911 i2c_wr32(sd, CECTEN, MASK_CECTEN);
912 return 0;
913 }
914
915 static const struct cec_adap_ops tc358743_cec_adap_ops = {
916 .adap_enable = tc358743_cec_adap_enable,
917 .adap_log_addr = tc358743_cec_adap_log_addr,
918 .adap_transmit = tc358743_cec_adap_transmit,
919 .adap_monitor_all_enable = tc358743_cec_adap_monitor_all_enable,
920 };
921
tc358743_cec_handler(struct v4l2_subdev * sd,u16 intstatus,bool * handled)922 static void tc358743_cec_handler(struct v4l2_subdev *sd, u16 intstatus,
923 bool *handled)
924 {
925 struct tc358743_state *state = to_state(sd);
926 unsigned int cec_rxint, cec_txint;
927 unsigned int clr = 0;
928
929 cec_rxint = i2c_rd32(sd, CECRSTAT);
930 cec_txint = i2c_rd32(sd, CECTSTAT);
931
932 if (intstatus & MASK_CEC_RINT)
933 clr |= MASK_CECRICLR;
934 if (intstatus & MASK_CEC_TINT)
935 clr |= MASK_CECTICLR;
936 i2c_wr32(sd, CECICLR, clr);
937
938 if ((intstatus & MASK_CEC_TINT) && cec_txint) {
939 if (cec_txint & MASK_CECTIEND)
940 cec_transmit_attempt_done(state->cec_adap,
941 CEC_TX_STATUS_OK);
942 else if (cec_txint & MASK_CECTIAL)
943 cec_transmit_attempt_done(state->cec_adap,
944 CEC_TX_STATUS_ARB_LOST);
945 else if (cec_txint & MASK_CECTIACK)
946 cec_transmit_attempt_done(state->cec_adap,
947 CEC_TX_STATUS_NACK);
948 else if (cec_txint & MASK_CECTIUR) {
949 /*
950 * Not sure when this bit is set. Treat
951 * it as an error for now.
952 */
953 cec_transmit_attempt_done(state->cec_adap,
954 CEC_TX_STATUS_ERROR);
955 }
956 if (handled)
957 *handled = true;
958 }
959 if ((intstatus & MASK_CEC_RINT) &&
960 (cec_rxint & MASK_CECRIEND)) {
961 struct cec_msg msg = {};
962 unsigned int i;
963 unsigned int v;
964
965 v = i2c_rd32(sd, CECRCTR);
966 msg.len = v & 0x1f;
967 if (msg.len > CEC_MAX_MSG_SIZE)
968 msg.len = CEC_MAX_MSG_SIZE;
969 for (i = 0; i < msg.len; i++) {
970 v = i2c_rd32(sd, CECRBUF1 + i * 4);
971 msg.msg[i] = v & 0xff;
972 }
973 cec_received_msg(state->cec_adap, &msg);
974 if (handled)
975 *handled = true;
976 }
977 i2c_wr16(sd, INTSTATUS,
978 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
979 }
980
981 #endif
982
983 /* --------------- IRQ --------------- */
984
tc358743_format_change(struct v4l2_subdev * sd)985 static void tc358743_format_change(struct v4l2_subdev *sd)
986 {
987 struct tc358743_state *state = to_state(sd);
988 struct v4l2_dv_timings timings;
989 const struct v4l2_event tc358743_ev_fmt = {
990 .type = V4L2_EVENT_SOURCE_CHANGE,
991 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
992 };
993
994 if (tc358743_get_detected_timings(sd, &timings)) {
995 enable_stream(sd, false);
996
997 v4l2_dbg(1, debug, sd, "%s: No signal\n",
998 __func__);
999 } else {
1000 if (!v4l2_match_dv_timings(&state->timings, &timings, 0, false))
1001 enable_stream(sd, false);
1002
1003 if (debug)
1004 v4l2_print_dv_timings(sd->name,
1005 "tc358743_format_change: New format: ",
1006 &timings, false);
1007 }
1008
1009 if (sd->devnode)
1010 v4l2_subdev_notify_event(sd, &tc358743_ev_fmt);
1011 }
1012
tc358743_init_interrupts(struct v4l2_subdev * sd)1013 static void tc358743_init_interrupts(struct v4l2_subdev *sd)
1014 {
1015 u16 i;
1016
1017 /* clear interrupt status registers */
1018 for (i = SYS_INT; i <= KEY_INT; i++)
1019 i2c_wr8(sd, i, 0xff);
1020
1021 i2c_wr16(sd, INTSTATUS, 0xffff);
1022 }
1023
tc358743_enable_interrupts(struct v4l2_subdev * sd,bool cable_connected)1024 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
1025 bool cable_connected)
1026 {
1027 v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__,
1028 cable_connected);
1029
1030 if (cable_connected) {
1031 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET |
1032 MASK_M_HDMI_DET) & 0xff);
1033 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG);
1034 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
1035 MASK_M_AF_UNLOCK) & 0xff);
1036 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END);
1037 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG);
1038 } else {
1039 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff);
1040 i2c_wr8(sd, CLK_INTM, 0xff);
1041 i2c_wr8(sd, CBIT_INTM, 0xff);
1042 i2c_wr8(sd, AUDIO_INTM, 0xff);
1043 i2c_wr8(sd, MISC_INTM, 0xff);
1044 }
1045 }
1046
tc358743_hdmi_audio_int_handler(struct v4l2_subdev * sd,bool * handled)1047 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd,
1048 bool *handled)
1049 {
1050 u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM);
1051 u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask;
1052
1053 i2c_wr8(sd, AUDIO_INT, audio_int);
1054
1055 v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int);
1056
1057 tc358743_s_ctrl_audio_sampling_rate(sd);
1058 tc358743_s_ctrl_audio_present(sd);
1059 }
1060
tc358743_csi_err_int_handler(struct v4l2_subdev * sd,bool * handled)1061 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled)
1062 {
1063 v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR));
1064
1065 i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER);
1066 }
1067
tc358743_hdmi_misc_int_handler(struct v4l2_subdev * sd,bool * handled)1068 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd,
1069 bool *handled)
1070 {
1071 u8 misc_int_mask = i2c_rd8(sd, MISC_INTM);
1072 u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask;
1073
1074 i2c_wr8(sd, MISC_INT, misc_int);
1075
1076 v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int);
1077
1078 if (misc_int & MASK_I_SYNC_CHG) {
1079 /* Reset the HDMI PHY to try to trigger proper lock on the
1080 * incoming video format. Erase BKSV to prevent that old keys
1081 * are used when a new source is connected. */
1082 if (no_sync(sd) || no_signal(sd)) {
1083 tc358743_reset_phy(sd);
1084 tc358743_erase_bksv(sd);
1085 }
1086
1087 tc358743_format_change(sd);
1088
1089 misc_int &= ~MASK_I_SYNC_CHG;
1090 if (handled)
1091 *handled = true;
1092 }
1093
1094 if (misc_int) {
1095 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n",
1096 __func__, misc_int);
1097 }
1098 }
1099
tc358743_hdmi_cbit_int_handler(struct v4l2_subdev * sd,bool * handled)1100 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd,
1101 bool *handled)
1102 {
1103 u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);
1104 u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask;
1105
1106 i2c_wr8(sd, CBIT_INT, cbit_int);
1107
1108 v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int);
1109
1110 if (cbit_int & MASK_I_CBIT_FS) {
1111
1112 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n",
1113 __func__);
1114 tc358743_s_ctrl_audio_sampling_rate(sd);
1115
1116 cbit_int &= ~MASK_I_CBIT_FS;
1117 if (handled)
1118 *handled = true;
1119 }
1120
1121 if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) {
1122
1123 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n",
1124 __func__);
1125 tc358743_s_ctrl_audio_present(sd);
1126
1127 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK);
1128 if (handled)
1129 *handled = true;
1130 }
1131
1132 if (cbit_int) {
1133 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n",
1134 __func__, cbit_int);
1135 }
1136 }
1137
tc358743_hdmi_clk_int_handler(struct v4l2_subdev * sd,bool * handled)1138 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled)
1139 {
1140 u8 clk_int_mask = i2c_rd8(sd, CLK_INTM);
1141 u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask;
1142
1143 /* Bit 7 and bit 6 are set even when they are masked */
1144 i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG);
1145
1146 v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int);
1147
1148 if (clk_int & (MASK_I_IN_DE_CHG)) {
1149
1150 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n",
1151 __func__);
1152
1153 /* If the source switch to a new resolution with the same pixel
1154 * frequency as the existing (e.g. 1080p25 -> 720p50), the
1155 * I_SYNC_CHG interrupt is not always triggered, while the
1156 * I_IN_DE_CHG interrupt seems to work fine. Format change
1157 * notifications are only sent when the signal is stable to
1158 * reduce the number of notifications. */
1159 if (!no_signal(sd) && !no_sync(sd))
1160 tc358743_format_change(sd);
1161
1162 clk_int &= ~(MASK_I_IN_DE_CHG);
1163 if (handled)
1164 *handled = true;
1165 }
1166
1167 if (clk_int) {
1168 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n",
1169 __func__, clk_int);
1170 }
1171 }
1172
tc358743_hdmi_sys_int_handler(struct v4l2_subdev * sd,bool * handled)1173 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled)
1174 {
1175 struct tc358743_state *state = to_state(sd);
1176 u8 sys_int_mask = i2c_rd8(sd, SYS_INTM);
1177 u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask;
1178
1179 i2c_wr8(sd, SYS_INT, sys_int);
1180
1181 v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int);
1182
1183 if (sys_int & MASK_I_DDC) {
1184 bool tx_5v = tx_5v_power_present(sd);
1185
1186 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n",
1187 __func__, tx_5v ? "yes" : "no");
1188
1189 if (tx_5v) {
1190 tc358743_enable_edid(sd);
1191 } else {
1192 tc358743_enable_interrupts(sd, false);
1193 tc358743_disable_edid(sd);
1194 memset(&state->timings, 0, sizeof(state->timings));
1195 tc358743_erase_bksv(sd);
1196 tc358743_update_controls(sd);
1197 }
1198
1199 sys_int &= ~MASK_I_DDC;
1200 if (handled)
1201 *handled = true;
1202 }
1203
1204 if (sys_int & MASK_I_DVI) {
1205 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n",
1206 __func__);
1207
1208 /* Reset the HDMI PHY to try to trigger proper lock on the
1209 * incoming video format. Erase BKSV to prevent that old keys
1210 * are used when a new source is connected. */
1211 if (no_sync(sd) || no_signal(sd)) {
1212 tc358743_reset_phy(sd);
1213 tc358743_erase_bksv(sd);
1214 }
1215
1216 sys_int &= ~MASK_I_DVI;
1217 if (handled)
1218 *handled = true;
1219 }
1220
1221 if (sys_int & MASK_I_HDMI) {
1222 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n",
1223 __func__);
1224
1225 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */
1226 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON);
1227
1228 sys_int &= ~MASK_I_HDMI;
1229 if (handled)
1230 *handled = true;
1231 }
1232
1233 if (sys_int) {
1234 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n",
1235 __func__, sys_int);
1236 }
1237 }
1238
1239 /* --------------- CORE OPS --------------- */
1240
tc358743_log_status(struct v4l2_subdev * sd)1241 static int tc358743_log_status(struct v4l2_subdev *sd)
1242 {
1243 struct tc358743_state *state = to_state(sd);
1244 struct v4l2_dv_timings timings;
1245 uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
1246 uint16_t sysctl = i2c_rd16(sd, SYSCTL);
1247 u8 vi_status3 = i2c_rd8(sd, VI_STATUS3);
1248 const int deep_color_mode[4] = { 8, 10, 12, 16 };
1249 static const char * const input_color_space[] = {
1250 "RGB", "YCbCr 601", "opRGB", "YCbCr 709", "NA (4)",
1251 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
1252 "NA(10)", "NA(11)", "NA(12)", "opYCC 601"};
1253
1254 v4l2_info(sd, "-----Chip status-----\n");
1255 v4l2_info(sd, "Chip ID: 0x%02x\n",
1256 (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8);
1257 v4l2_info(sd, "Chip revision: 0x%02x\n",
1258 i2c_rd16(sd, CHIPID) & MASK_REVID);
1259 v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n",
1260 !!(sysctl & MASK_IRRST),
1261 !!(sysctl & MASK_CECRST),
1262 !!(sysctl & MASK_CTXRST),
1263 !!(sysctl & MASK_HDMIRST));
1264 v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off");
1265 v4l2_info(sd, "Cable detected (+5V power): %s\n",
1266 hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no");
1267 v4l2_info(sd, "DDC lines enabled: %s\n",
1268 (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ?
1269 "yes" : "no");
1270 v4l2_info(sd, "Hotplug enabled: %s\n",
1271 (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ?
1272 "yes" : "no");
1273 v4l2_info(sd, "CEC enabled: %s\n",
1274 (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no");
1275 v4l2_info(sd, "-----Signal status-----\n");
1276 v4l2_info(sd, "TMDS signal detected: %s\n",
1277 hdmi_sys_status & MASK_S_TMDS ? "yes" : "no");
1278 v4l2_info(sd, "Stable sync signal: %s\n",
1279 hdmi_sys_status & MASK_S_SYNC ? "yes" : "no");
1280 v4l2_info(sd, "PHY PLL locked: %s\n",
1281 hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no");
1282 v4l2_info(sd, "PHY DE detected: %s\n",
1283 hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no");
1284
1285 if (tc358743_get_detected_timings(sd, &timings)) {
1286 v4l2_info(sd, "No video detected\n");
1287 } else {
1288 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings,
1289 true);
1290 }
1291 v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings,
1292 true);
1293
1294 v4l2_info(sd, "-----CSI-TX status-----\n");
1295 v4l2_info(sd, "Lanes needed: %d\n",
1296 tc358743_num_csi_lanes_needed(sd));
1297 v4l2_info(sd, "Lanes in use: %d\n",
1298 state->csi_lanes_in_use);
1299 v4l2_info(sd, "Waiting for particular sync signal: %s\n",
1300 (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ?
1301 "yes" : "no");
1302 v4l2_info(sd, "Transmit mode: %s\n",
1303 (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ?
1304 "yes" : "no");
1305 v4l2_info(sd, "Receive mode: %s\n",
1306 (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ?
1307 "yes" : "no");
1308 v4l2_info(sd, "Stopped: %s\n",
1309 (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
1310 "yes" : "no");
1311 v4l2_info(sd, "Color space: %s\n",
1312 state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
1313 "YCbCr 422 16-bit" :
1314 state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
1315 "RGB 888 24-bit" : "Unsupported");
1316
1317 v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
1318 v4l2_info(sd, "HDCP encrypted content: %s\n",
1319 hdmi_sys_status & MASK_S_HDCP ? "yes" : "no");
1320 v4l2_info(sd, "Input color space: %s %s range\n",
1321 input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1],
1322 (vi_status3 & MASK_LIMITED) ? "limited" : "full");
1323 if (!is_hdmi(sd))
1324 return 0;
1325 v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" :
1326 "off");
1327 v4l2_info(sd, "Deep color mode: %d-bits per channel\n",
1328 deep_color_mode[(i2c_rd8(sd, VI_STATUS1) &
1329 MASK_S_DEEPCOLOR) >> 2]);
1330 print_avi_infoframe(sd);
1331
1332 return 0;
1333 }
1334
1335 #ifdef CONFIG_VIDEO_ADV_DEBUG
tc358743_print_register_map(struct v4l2_subdev * sd)1336 static void tc358743_print_register_map(struct v4l2_subdev *sd)
1337 {
1338 v4l2_info(sd, "0x0000-0x00FF: Global Control Register\n");
1339 v4l2_info(sd, "0x0100-0x01FF: CSI2-TX PHY Register\n");
1340 v4l2_info(sd, "0x0200-0x03FF: CSI2-TX PPI Register\n");
1341 v4l2_info(sd, "0x0400-0x05FF: Reserved\n");
1342 v4l2_info(sd, "0x0600-0x06FF: CEC Register\n");
1343 v4l2_info(sd, "0x0700-0x84FF: Reserved\n");
1344 v4l2_info(sd, "0x8500-0x85FF: HDMIRX System Control Register\n");
1345 v4l2_info(sd, "0x8600-0x86FF: HDMIRX Audio Control Register\n");
1346 v4l2_info(sd, "0x8700-0x87FF: HDMIRX InfoFrame packet data Register\n");
1347 v4l2_info(sd, "0x8800-0x88FF: HDMIRX HDCP Port Register\n");
1348 v4l2_info(sd, "0x8900-0x89FF: HDMIRX Video Output Port & 3D Register\n");
1349 v4l2_info(sd, "0x8A00-0x8BFF: Reserved\n");
1350 v4l2_info(sd, "0x8C00-0x8FFF: HDMIRX EDID-RAM (1024bytes)\n");
1351 v4l2_info(sd, "0x9000-0x90FF: HDMIRX GBD Extraction Control\n");
1352 v4l2_info(sd, "0x9100-0x92FF: HDMIRX GBD RAM read\n");
1353 v4l2_info(sd, "0x9300- : Reserved\n");
1354 }
1355
tc358743_get_reg_size(u16 address)1356 static int tc358743_get_reg_size(u16 address)
1357 {
1358 /* REF_01 p. 66-72 */
1359 if (address <= 0x00ff)
1360 return 2;
1361 else if ((address >= 0x0100) && (address <= 0x06FF))
1362 return 4;
1363 else if ((address >= 0x0700) && (address <= 0x84ff))
1364 return 2;
1365 else
1366 return 1;
1367 }
1368
tc358743_g_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)1369 static int tc358743_g_register(struct v4l2_subdev *sd,
1370 struct v4l2_dbg_register *reg)
1371 {
1372 if (reg->reg > 0xffff) {
1373 tc358743_print_register_map(sd);
1374 return -EINVAL;
1375 }
1376
1377 reg->size = tc358743_get_reg_size(reg->reg);
1378
1379 reg->val = i2c_rdreg(sd, reg->reg, reg->size);
1380
1381 return 0;
1382 }
1383
tc358743_s_register(struct v4l2_subdev * sd,const struct v4l2_dbg_register * reg)1384 static int tc358743_s_register(struct v4l2_subdev *sd,
1385 const struct v4l2_dbg_register *reg)
1386 {
1387 if (reg->reg > 0xffff) {
1388 tc358743_print_register_map(sd);
1389 return -EINVAL;
1390 }
1391
1392 /* It should not be possible for the user to enable HDCP with a simple
1393 * v4l2-dbg command.
1394 *
1395 * DO NOT REMOVE THIS unless all other issues with HDCP have been
1396 * resolved.
1397 */
1398 if (reg->reg == HDCP_MODE ||
1399 reg->reg == HDCP_REG1 ||
1400 reg->reg == HDCP_REG2 ||
1401 reg->reg == HDCP_REG3 ||
1402 reg->reg == BCAPS)
1403 return 0;
1404
1405 i2c_wrreg(sd, (u16)reg->reg, reg->val,
1406 tc358743_get_reg_size(reg->reg));
1407
1408 return 0;
1409 }
1410 #endif
1411
tc358743_isr(struct v4l2_subdev * sd,u32 status,bool * handled)1412 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1413 {
1414 u16 intstatus = i2c_rd16(sd, INTSTATUS);
1415
1416 v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus);
1417
1418 if (intstatus & MASK_HDMI_INT) {
1419 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0);
1420 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1);
1421
1422 if (hdmi_int0 & MASK_I_MISC)
1423 tc358743_hdmi_misc_int_handler(sd, handled);
1424 if (hdmi_int1 & MASK_I_CBIT)
1425 tc358743_hdmi_cbit_int_handler(sd, handled);
1426 if (hdmi_int1 & MASK_I_CLK)
1427 tc358743_hdmi_clk_int_handler(sd, handled);
1428 if (hdmi_int1 & MASK_I_SYS)
1429 tc358743_hdmi_sys_int_handler(sd, handled);
1430 if (hdmi_int1 & MASK_I_AUD)
1431 tc358743_hdmi_audio_int_handler(sd, handled);
1432
1433 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT);
1434 intstatus &= ~MASK_HDMI_INT;
1435 }
1436
1437 #ifdef CONFIG_VIDEO_TC358743_CEC
1438 if (intstatus & (MASK_CEC_RINT | MASK_CEC_TINT)) {
1439 tc358743_cec_handler(sd, intstatus, handled);
1440 i2c_wr16(sd, INTSTATUS,
1441 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
1442 intstatus &= ~(MASK_CEC_RINT | MASK_CEC_TINT);
1443 }
1444 #endif
1445
1446 if (intstatus & MASK_CSI_INT) {
1447 u32 csi_int = i2c_rd32(sd, CSI_INT);
1448
1449 if (csi_int & MASK_INTER)
1450 tc358743_csi_err_int_handler(sd, handled);
1451
1452 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT);
1453 }
1454
1455 intstatus = i2c_rd16(sd, INTSTATUS);
1456 if (intstatus) {
1457 v4l2_dbg(1, debug, sd,
1458 "%s: Unhandled IntStatus interrupts: 0x%02x\n",
1459 __func__, intstatus);
1460 }
1461
1462 return 0;
1463 }
1464
tc358743_irq_handler(int irq,void * dev_id)1465 static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
1466 {
1467 struct tc358743_state *state = dev_id;
1468 bool handled = false;
1469
1470 tc358743_isr(&state->sd, 0, &handled);
1471
1472 return handled ? IRQ_HANDLED : IRQ_NONE;
1473 }
1474
tc358743_irq_poll_timer(struct timer_list * t)1475 static void tc358743_irq_poll_timer(struct timer_list *t)
1476 {
1477 struct tc358743_state *state = from_timer(state, t, timer);
1478 unsigned int msecs;
1479
1480 schedule_work(&state->work_i2c_poll);
1481 /*
1482 * If CEC is present, then we need to poll more frequently,
1483 * otherwise we will miss CEC messages.
1484 */
1485 msecs = state->cec_adap ? POLL_INTERVAL_CEC_MS : POLL_INTERVAL_MS;
1486 mod_timer(&state->timer, jiffies + msecs_to_jiffies(msecs));
1487 }
1488
tc358743_work_i2c_poll(struct work_struct * work)1489 static void tc358743_work_i2c_poll(struct work_struct *work)
1490 {
1491 struct tc358743_state *state = container_of(work,
1492 struct tc358743_state, work_i2c_poll);
1493 bool handled;
1494
1495 tc358743_isr(&state->sd, 0, &handled);
1496 }
1497
tc358743_subscribe_event(struct v4l2_subdev * sd,struct v4l2_fh * fh,struct v4l2_event_subscription * sub)1498 static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1499 struct v4l2_event_subscription *sub)
1500 {
1501 switch (sub->type) {
1502 case V4L2_EVENT_SOURCE_CHANGE:
1503 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
1504 case V4L2_EVENT_CTRL:
1505 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
1506 default:
1507 return -EINVAL;
1508 }
1509 }
1510
1511 /* --------------- VIDEO OPS --------------- */
1512
tc358743_g_input_status(struct v4l2_subdev * sd,u32 * status)1513 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
1514 {
1515 *status = 0;
1516 *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
1517 *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0;
1518
1519 v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
1520
1521 return 0;
1522 }
1523
tc358743_s_dv_timings(struct v4l2_subdev * sd,struct v4l2_dv_timings * timings)1524 static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
1525 struct v4l2_dv_timings *timings)
1526 {
1527 struct tc358743_state *state = to_state(sd);
1528
1529 if (!timings)
1530 return -EINVAL;
1531
1532 if (debug)
1533 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ",
1534 timings, false);
1535
1536 if (v4l2_match_dv_timings(&state->timings, timings, 0, false)) {
1537 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1538 return 0;
1539 }
1540
1541 if (!v4l2_valid_dv_timings(timings,
1542 &tc358743_timings_cap, NULL, NULL)) {
1543 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1544 return -ERANGE;
1545 }
1546
1547 state->timings = *timings;
1548
1549 enable_stream(sd, false);
1550 tc358743_set_pll(sd);
1551 tc358743_set_csi(sd);
1552
1553 return 0;
1554 }
1555
tc358743_g_dv_timings(struct v4l2_subdev * sd,struct v4l2_dv_timings * timings)1556 static int tc358743_g_dv_timings(struct v4l2_subdev *sd,
1557 struct v4l2_dv_timings *timings)
1558 {
1559 struct tc358743_state *state = to_state(sd);
1560
1561 *timings = state->timings;
1562
1563 return 0;
1564 }
1565
tc358743_enum_dv_timings(struct v4l2_subdev * sd,struct v4l2_enum_dv_timings * timings)1566 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd,
1567 struct v4l2_enum_dv_timings *timings)
1568 {
1569 if (timings->pad != 0)
1570 return -EINVAL;
1571
1572 return v4l2_enum_dv_timings_cap(timings,
1573 &tc358743_timings_cap, NULL, NULL);
1574 }
1575
tc358743_query_dv_timings(struct v4l2_subdev * sd,struct v4l2_dv_timings * timings)1576 static int tc358743_query_dv_timings(struct v4l2_subdev *sd,
1577 struct v4l2_dv_timings *timings)
1578 {
1579 int ret;
1580
1581 ret = tc358743_get_detected_timings(sd, timings);
1582 if (ret)
1583 return ret;
1584
1585 if (debug)
1586 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ",
1587 timings, false);
1588
1589 if (!v4l2_valid_dv_timings(timings,
1590 &tc358743_timings_cap, NULL, NULL)) {
1591 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1592 return -ERANGE;
1593 }
1594
1595 return 0;
1596 }
1597
tc358743_dv_timings_cap(struct v4l2_subdev * sd,struct v4l2_dv_timings_cap * cap)1598 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd,
1599 struct v4l2_dv_timings_cap *cap)
1600 {
1601 if (cap->pad != 0)
1602 return -EINVAL;
1603
1604 *cap = tc358743_timings_cap;
1605
1606 return 0;
1607 }
1608
tc358743_get_mbus_config(struct v4l2_subdev * sd,unsigned int pad,struct v4l2_mbus_config * cfg)1609 static int tc358743_get_mbus_config(struct v4l2_subdev *sd,
1610 unsigned int pad,
1611 struct v4l2_mbus_config *cfg)
1612 {
1613 struct tc358743_state *state = to_state(sd);
1614
1615 cfg->type = V4L2_MBUS_CSI2_DPHY;
1616
1617 /* Support for non-continuous CSI-2 clock is missing in the driver */
1618 cfg->bus.mipi_csi2.flags = 0;
1619 cfg->bus.mipi_csi2.num_data_lanes = state->csi_lanes_in_use;
1620
1621 return 0;
1622 }
1623
tc358743_s_stream(struct v4l2_subdev * sd,int enable)1624 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
1625 {
1626 enable_stream(sd, enable);
1627 if (!enable) {
1628 /* Put all lanes in LP-11 state (STOPSTATE) */
1629 tc358743_set_csi(sd);
1630 }
1631
1632 return 0;
1633 }
1634
1635 /* --------------- PAD OPS --------------- */
1636
tc358743_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1637 static int tc358743_enum_mbus_code(struct v4l2_subdev *sd,
1638 struct v4l2_subdev_state *sd_state,
1639 struct v4l2_subdev_mbus_code_enum *code)
1640 {
1641 switch (code->index) {
1642 case 0:
1643 code->code = MEDIA_BUS_FMT_RGB888_1X24;
1644 break;
1645 case 1:
1646 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
1647 break;
1648 default:
1649 return -EINVAL;
1650 }
1651 return 0;
1652 }
1653
tc358743_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)1654 static int tc358743_get_fmt(struct v4l2_subdev *sd,
1655 struct v4l2_subdev_state *sd_state,
1656 struct v4l2_subdev_format *format)
1657 {
1658 struct tc358743_state *state = to_state(sd);
1659 u8 vi_rep = i2c_rd8(sd, VI_REP);
1660
1661 if (format->pad != 0)
1662 return -EINVAL;
1663
1664 format->format.code = state->mbus_fmt_code;
1665 format->format.width = state->timings.bt.width;
1666 format->format.height = state->timings.bt.height;
1667 format->format.field = V4L2_FIELD_NONE;
1668
1669 switch (vi_rep & MASK_VOUT_COLOR_SEL) {
1670 case MASK_VOUT_COLOR_RGB_FULL:
1671 case MASK_VOUT_COLOR_RGB_LIMITED:
1672 format->format.colorspace = V4L2_COLORSPACE_SRGB;
1673 break;
1674 case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
1675 case MASK_VOUT_COLOR_601_YCBCR_FULL:
1676 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
1677 break;
1678 case MASK_VOUT_COLOR_709_YCBCR_FULL:
1679 case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
1680 format->format.colorspace = V4L2_COLORSPACE_REC709;
1681 break;
1682 default:
1683 format->format.colorspace = 0;
1684 break;
1685 }
1686
1687 return 0;
1688 }
1689
tc358743_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)1690 static int tc358743_set_fmt(struct v4l2_subdev *sd,
1691 struct v4l2_subdev_state *sd_state,
1692 struct v4l2_subdev_format *format)
1693 {
1694 struct tc358743_state *state = to_state(sd);
1695
1696 u32 code = format->format.code; /* is overwritten by get_fmt */
1697 int ret = tc358743_get_fmt(sd, sd_state, format);
1698
1699 format->format.code = code;
1700
1701 if (ret)
1702 return ret;
1703
1704 switch (code) {
1705 case MEDIA_BUS_FMT_RGB888_1X24:
1706 case MEDIA_BUS_FMT_UYVY8_1X16:
1707 break;
1708 default:
1709 return -EINVAL;
1710 }
1711
1712 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1713 return 0;
1714
1715 state->mbus_fmt_code = format->format.code;
1716
1717 enable_stream(sd, false);
1718 tc358743_set_pll(sd);
1719 tc358743_set_csi(sd);
1720 tc358743_set_csi_color_space(sd);
1721
1722 return 0;
1723 }
1724
tc358743_g_edid(struct v4l2_subdev * sd,struct v4l2_subdev_edid * edid)1725 static int tc358743_g_edid(struct v4l2_subdev *sd,
1726 struct v4l2_subdev_edid *edid)
1727 {
1728 struct tc358743_state *state = to_state(sd);
1729
1730 memset(edid->reserved, 0, sizeof(edid->reserved));
1731
1732 if (edid->pad != 0)
1733 return -EINVAL;
1734
1735 if (edid->start_block == 0 && edid->blocks == 0) {
1736 edid->blocks = state->edid_blocks_written;
1737 return 0;
1738 }
1739
1740 if (state->edid_blocks_written == 0)
1741 return -ENODATA;
1742
1743 if (edid->start_block >= state->edid_blocks_written ||
1744 edid->blocks == 0)
1745 return -EINVAL;
1746
1747 if (edid->start_block + edid->blocks > state->edid_blocks_written)
1748 edid->blocks = state->edid_blocks_written - edid->start_block;
1749
1750 i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid,
1751 edid->blocks * EDID_BLOCK_SIZE);
1752
1753 return 0;
1754 }
1755
tc358743_s_edid(struct v4l2_subdev * sd,struct v4l2_subdev_edid * edid)1756 static int tc358743_s_edid(struct v4l2_subdev *sd,
1757 struct v4l2_subdev_edid *edid)
1758 {
1759 struct tc358743_state *state = to_state(sd);
1760 u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
1761 u16 pa;
1762 int err;
1763 int i;
1764
1765 v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
1766 __func__, edid->pad, edid->start_block, edid->blocks);
1767
1768 memset(edid->reserved, 0, sizeof(edid->reserved));
1769
1770 if (edid->pad != 0)
1771 return -EINVAL;
1772
1773 if (edid->start_block != 0)
1774 return -EINVAL;
1775
1776 if (edid->blocks > EDID_NUM_BLOCKS_MAX) {
1777 edid->blocks = EDID_NUM_BLOCKS_MAX;
1778 return -E2BIG;
1779 }
1780 pa = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1781 err = v4l2_phys_addr_validate(pa, &pa, NULL);
1782 if (err)
1783 return err;
1784
1785 cec_phys_addr_invalidate(state->cec_adap);
1786
1787 tc358743_disable_edid(sd);
1788
1789 i2c_wr8(sd, EDID_LEN1, edid_len & 0xff);
1790 i2c_wr8(sd, EDID_LEN2, edid_len >> 8);
1791
1792 if (edid->blocks == 0) {
1793 state->edid_blocks_written = 0;
1794 return 0;
1795 }
1796
1797 for (i = 0; i < edid_len; i += EDID_BLOCK_SIZE)
1798 i2c_wr(sd, EDID_RAM + i, edid->edid + i, EDID_BLOCK_SIZE);
1799
1800 state->edid_blocks_written = edid->blocks;
1801
1802 cec_s_phys_addr(state->cec_adap, pa, false);
1803
1804 if (tx_5v_power_present(sd))
1805 tc358743_enable_edid(sd);
1806
1807 return 0;
1808 }
1809
1810 /* -------------------------------------------------------------------------- */
1811
1812 static const struct v4l2_subdev_core_ops tc358743_core_ops = {
1813 .log_status = tc358743_log_status,
1814 #ifdef CONFIG_VIDEO_ADV_DEBUG
1815 .g_register = tc358743_g_register,
1816 .s_register = tc358743_s_register,
1817 #endif
1818 .interrupt_service_routine = tc358743_isr,
1819 .subscribe_event = tc358743_subscribe_event,
1820 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1821 };
1822
1823 static const struct v4l2_subdev_video_ops tc358743_video_ops = {
1824 .g_input_status = tc358743_g_input_status,
1825 .s_dv_timings = tc358743_s_dv_timings,
1826 .g_dv_timings = tc358743_g_dv_timings,
1827 .query_dv_timings = tc358743_query_dv_timings,
1828 .s_stream = tc358743_s_stream,
1829 };
1830
1831 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
1832 .enum_mbus_code = tc358743_enum_mbus_code,
1833 .set_fmt = tc358743_set_fmt,
1834 .get_fmt = tc358743_get_fmt,
1835 .get_edid = tc358743_g_edid,
1836 .set_edid = tc358743_s_edid,
1837 .enum_dv_timings = tc358743_enum_dv_timings,
1838 .dv_timings_cap = tc358743_dv_timings_cap,
1839 .get_mbus_config = tc358743_get_mbus_config,
1840 };
1841
1842 static const struct v4l2_subdev_ops tc358743_ops = {
1843 .core = &tc358743_core_ops,
1844 .video = &tc358743_video_ops,
1845 .pad = &tc358743_pad_ops,
1846 };
1847
1848 /* --------------- CUSTOM CTRLS --------------- */
1849
1850 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = {
1851 .id = TC358743_CID_AUDIO_SAMPLING_RATE,
1852 .name = "Audio sampling rate",
1853 .type = V4L2_CTRL_TYPE_INTEGER,
1854 .min = 0,
1855 .max = 768000,
1856 .step = 1,
1857 .def = 0,
1858 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1859 };
1860
1861 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = {
1862 .id = TC358743_CID_AUDIO_PRESENT,
1863 .name = "Audio present",
1864 .type = V4L2_CTRL_TYPE_BOOLEAN,
1865 .min = 0,
1866 .max = 1,
1867 .step = 1,
1868 .def = 0,
1869 .flags = V4L2_CTRL_FLAG_READ_ONLY,
1870 };
1871
1872 /* --------------- PROBE / REMOVE --------------- */
1873
1874 #ifdef CONFIG_OF
tc358743_gpio_reset(struct tc358743_state * state)1875 static void tc358743_gpio_reset(struct tc358743_state *state)
1876 {
1877 usleep_range(5000, 10000);
1878 gpiod_set_value(state->reset_gpio, 1);
1879 usleep_range(1000, 2000);
1880 gpiod_set_value(state->reset_gpio, 0);
1881 msleep(20);
1882 }
1883
tc358743_probe_of(struct tc358743_state * state)1884 static int tc358743_probe_of(struct tc358743_state *state)
1885 {
1886 struct device *dev = &state->i2c_client->dev;
1887 struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
1888 struct device_node *ep;
1889 struct clk *refclk;
1890 u32 bps_pr_lane;
1891 int ret;
1892
1893 refclk = devm_clk_get(dev, "refclk");
1894 if (IS_ERR(refclk))
1895 return dev_err_probe(dev, PTR_ERR(refclk),
1896 "failed to get refclk\n");
1897
1898 ep = of_graph_get_next_endpoint(dev->of_node, NULL);
1899 if (!ep) {
1900 dev_err(dev, "missing endpoint node\n");
1901 return -EINVAL;
1902 }
1903
1904 ret = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep), &endpoint);
1905 if (ret) {
1906 dev_err(dev, "failed to parse endpoint\n");
1907 goto put_node;
1908 }
1909
1910 if (endpoint.bus_type != V4L2_MBUS_CSI2_DPHY ||
1911 endpoint.bus.mipi_csi2.num_data_lanes == 0 ||
1912 endpoint.nr_of_link_frequencies == 0) {
1913 dev_err(dev, "missing CSI-2 properties in endpoint\n");
1914 ret = -EINVAL;
1915 goto free_endpoint;
1916 }
1917
1918 if (endpoint.bus.mipi_csi2.num_data_lanes > 4) {
1919 dev_err(dev, "invalid number of lanes\n");
1920 ret = -EINVAL;
1921 goto free_endpoint;
1922 }
1923
1924 state->bus = endpoint.bus.mipi_csi2;
1925
1926 ret = clk_prepare_enable(refclk);
1927 if (ret) {
1928 dev_err(dev, "Failed! to enable clock\n");
1929 goto free_endpoint;
1930 }
1931
1932 state->pdata.refclk_hz = clk_get_rate(refclk);
1933 state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS;
1934 state->pdata.enable_hdcp = false;
1935 /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */
1936 state->pdata.fifo_level = 16;
1937 /*
1938 * The PLL input clock is obtained by dividing refclk by pll_prd.
1939 * It must be between 6 MHz and 40 MHz, lower frequency is better.
1940 */
1941 switch (state->pdata.refclk_hz) {
1942 case 26000000:
1943 case 27000000:
1944 case 42000000:
1945 state->pdata.pll_prd = state->pdata.refclk_hz / 6000000;
1946 break;
1947 default:
1948 dev_err(dev, "unsupported refclk rate: %u Hz\n",
1949 state->pdata.refclk_hz);
1950 goto disable_clk;
1951 }
1952
1953 /*
1954 * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps.
1955 * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60.
1956 */
1957 bps_pr_lane = 2 * endpoint.link_frequencies[0];
1958 if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) {
1959 dev_err(dev, "unsupported bps per lane: %u bps\n", bps_pr_lane);
1960 ret = -EINVAL;
1961 goto disable_clk;
1962 }
1963
1964 /* The CSI speed per lane is refclk / pll_prd * pll_fbd */
1965 state->pdata.pll_fbd = bps_pr_lane /
1966 state->pdata.refclk_hz * state->pdata.pll_prd;
1967
1968 /*
1969 * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz
1970 * link frequency). In principle it should be possible to calculate
1971 * them based on link frequency and resolution.
1972 */
1973 if (bps_pr_lane != 594000000U)
1974 dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
1975 state->pdata.lineinitcnt = 0xe80;
1976 state->pdata.lptxtimecnt = 0x003;
1977 /* tclk-preparecnt: 3, tclk-zerocnt: 20 */
1978 state->pdata.tclk_headercnt = 0x1403;
1979 state->pdata.tclk_trailcnt = 0x00;
1980 /* ths-preparecnt: 3, ths-zerocnt: 1 */
1981 state->pdata.ths_headercnt = 0x0103;
1982 state->pdata.twakeup = 0x4882;
1983 state->pdata.tclk_postcnt = 0x008;
1984 state->pdata.ths_trailcnt = 0x2;
1985 state->pdata.hstxvregcnt = 0;
1986
1987 state->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1988 GPIOD_OUT_LOW);
1989 if (IS_ERR(state->reset_gpio)) {
1990 dev_err(dev, "failed to get reset gpio\n");
1991 ret = PTR_ERR(state->reset_gpio);
1992 goto disable_clk;
1993 }
1994
1995 if (state->reset_gpio)
1996 tc358743_gpio_reset(state);
1997
1998 ret = 0;
1999 goto free_endpoint;
2000
2001 disable_clk:
2002 clk_disable_unprepare(refclk);
2003 free_endpoint:
2004 v4l2_fwnode_endpoint_free(&endpoint);
2005 put_node:
2006 of_node_put(ep);
2007 return ret;
2008 }
2009 #else
tc358743_probe_of(struct tc358743_state * state)2010 static inline int tc358743_probe_of(struct tc358743_state *state)
2011 {
2012 return -ENODEV;
2013 }
2014 #endif
2015
tc358743_probe(struct i2c_client * client)2016 static int tc358743_probe(struct i2c_client *client)
2017 {
2018 static struct v4l2_dv_timings default_timing =
2019 V4L2_DV_BT_CEA_640X480P59_94;
2020 struct tc358743_state *state;
2021 struct tc358743_platform_data *pdata = client->dev.platform_data;
2022 struct v4l2_subdev *sd;
2023 u16 irq_mask = MASK_HDMI_MSK | MASK_CSI_MSK;
2024 int err;
2025
2026 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2027 return -EIO;
2028 v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n",
2029 client->addr << 1, client->adapter->name);
2030
2031 state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state),
2032 GFP_KERNEL);
2033 if (!state)
2034 return -ENOMEM;
2035
2036 state->i2c_client = client;
2037
2038 /* platform data */
2039 if (pdata) {
2040 state->pdata = *pdata;
2041 state->bus.flags = 0;
2042 } else {
2043 err = tc358743_probe_of(state);
2044 if (err == -ENODEV)
2045 v4l_err(client, "No platform data!\n");
2046 if (err)
2047 return err;
2048 }
2049
2050 sd = &state->sd;
2051 v4l2_i2c_subdev_init(sd, client, &tc358743_ops);
2052 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
2053
2054 /* i2c access */
2055 if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
2056 v4l2_info(sd, "not a TC358743 on address 0x%x\n",
2057 client->addr << 1);
2058 return -ENODEV;
2059 }
2060
2061 /* control handlers */
2062 v4l2_ctrl_handler_init(&state->hdl, 3);
2063
2064 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL,
2065 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
2066
2067 /* custom controls */
2068 state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2069 &tc358743_ctrl_audio_sampling_rate, NULL);
2070
2071 state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2072 &tc358743_ctrl_audio_present, NULL);
2073
2074 sd->ctrl_handler = &state->hdl;
2075 if (state->hdl.error) {
2076 err = state->hdl.error;
2077 goto err_hdl;
2078 }
2079
2080 if (tc358743_update_controls(sd)) {
2081 err = -ENODEV;
2082 goto err_hdl;
2083 }
2084
2085 state->pad.flags = MEDIA_PAD_FL_SOURCE;
2086 sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
2087 err = media_entity_pads_init(&sd->entity, 1, &state->pad);
2088 if (err < 0)
2089 goto err_hdl;
2090
2091 state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
2092
2093 sd->dev = &client->dev;
2094
2095 mutex_init(&state->confctl_mutex);
2096
2097 INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
2098 tc358743_delayed_work_enable_hotplug);
2099
2100 #ifdef CONFIG_VIDEO_TC358743_CEC
2101 state->cec_adap = cec_allocate_adapter(&tc358743_cec_adap_ops,
2102 state, dev_name(&client->dev),
2103 CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, CEC_MAX_LOG_ADDRS);
2104 if (IS_ERR(state->cec_adap)) {
2105 err = PTR_ERR(state->cec_adap);
2106 goto err_hdl;
2107 }
2108 irq_mask |= MASK_CEC_RMSK | MASK_CEC_TMSK;
2109 #endif
2110
2111 tc358743_initial_setup(sd);
2112
2113 tc358743_s_dv_timings(sd, &default_timing);
2114
2115 tc358743_set_csi_color_space(sd);
2116
2117 tc358743_init_interrupts(sd);
2118
2119 if (state->i2c_client->irq) {
2120 err = devm_request_threaded_irq(&client->dev,
2121 state->i2c_client->irq,
2122 NULL, tc358743_irq_handler,
2123 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
2124 "tc358743", state);
2125 if (err)
2126 goto err_work_queues;
2127 } else {
2128 INIT_WORK(&state->work_i2c_poll,
2129 tc358743_work_i2c_poll);
2130 timer_setup(&state->timer, tc358743_irq_poll_timer, 0);
2131 state->timer.expires = jiffies +
2132 msecs_to_jiffies(POLL_INTERVAL_MS);
2133 add_timer(&state->timer);
2134 }
2135
2136 err = cec_register_adapter(state->cec_adap, &client->dev);
2137 if (err < 0) {
2138 pr_err("%s: failed to register the cec device\n", __func__);
2139 cec_delete_adapter(state->cec_adap);
2140 state->cec_adap = NULL;
2141 goto err_work_queues;
2142 }
2143
2144 tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
2145 i2c_wr16(sd, INTMASK, ~irq_mask);
2146
2147 err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
2148 if (err)
2149 goto err_work_queues;
2150
2151 err = v4l2_async_register_subdev(sd);
2152 if (err < 0)
2153 goto err_work_queues;
2154
2155 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
2156 client->addr << 1, client->adapter->name);
2157
2158 return 0;
2159
2160 err_work_queues:
2161 cec_unregister_adapter(state->cec_adap);
2162 if (!state->i2c_client->irq) {
2163 del_timer(&state->timer);
2164 flush_work(&state->work_i2c_poll);
2165 }
2166 cancel_delayed_work(&state->delayed_work_enable_hotplug);
2167 mutex_destroy(&state->confctl_mutex);
2168 err_hdl:
2169 media_entity_cleanup(&sd->entity);
2170 v4l2_ctrl_handler_free(&state->hdl);
2171 return err;
2172 }
2173
tc358743_remove(struct i2c_client * client)2174 static void tc358743_remove(struct i2c_client *client)
2175 {
2176 struct v4l2_subdev *sd = i2c_get_clientdata(client);
2177 struct tc358743_state *state = to_state(sd);
2178
2179 if (!state->i2c_client->irq) {
2180 del_timer_sync(&state->timer);
2181 flush_work(&state->work_i2c_poll);
2182 }
2183 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
2184 cec_unregister_adapter(state->cec_adap);
2185 v4l2_async_unregister_subdev(sd);
2186 v4l2_device_unregister_subdev(sd);
2187 mutex_destroy(&state->confctl_mutex);
2188 media_entity_cleanup(&sd->entity);
2189 v4l2_ctrl_handler_free(&state->hdl);
2190 }
2191
2192 static const struct i2c_device_id tc358743_id[] = {
2193 {"tc358743", 0},
2194 {}
2195 };
2196
2197 MODULE_DEVICE_TABLE(i2c, tc358743_id);
2198
2199 #if IS_ENABLED(CONFIG_OF)
2200 static const struct of_device_id tc358743_of_match[] = {
2201 { .compatible = "toshiba,tc358743" },
2202 {},
2203 };
2204 MODULE_DEVICE_TABLE(of, tc358743_of_match);
2205 #endif
2206
2207 static struct i2c_driver tc358743_driver = {
2208 .driver = {
2209 .name = "tc358743",
2210 .of_match_table = of_match_ptr(tc358743_of_match),
2211 },
2212 .probe = tc358743_probe,
2213 .remove = tc358743_remove,
2214 .id_table = tc358743_id,
2215 };
2216
2217 module_i2c_driver(tc358743_driver);
2218