2 * Analog Devices ADV7511 HDMI Transmitter Device Driver
4 * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 * This program is free software; you may redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/slab.h>
24 #include <linux/i2c.h>
25 #include <linux/delay.h>
26 #include <linux/videodev2.h>
27 #include <linux/gpio.h>
28 #include <linux/workqueue.h>
29 #include <linux/hdmi.h>
30 #include <linux/v4l2-dv-timings.h>
31 #include <media/v4l2-device.h>
32 #include <media/v4l2-common.h>
33 #include <media/v4l2-ctrls.h>
34 #include <media/v4l2-dv-timings.h>
35 #include <media/adv7511.h>
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "debug level (0-2)");
41 MODULE_DESCRIPTION("Analog Devices ADV7511 HDMI Transmitter Device Driver");
42 MODULE_AUTHOR("Hans Verkuil");
43 MODULE_LICENSE("GPL v2");
45 #define MASK_ADV7511_EDID_RDY_INT 0x04
46 #define MASK_ADV7511_MSEN_INT 0x40
47 #define MASK_ADV7511_HPD_INT 0x80
49 #define MASK_ADV7511_HPD_DETECT 0x40
50 #define MASK_ADV7511_MSEN_DETECT 0x20
51 #define MASK_ADV7511_EDID_RDY 0x10
53 #define EDID_MAX_RETRIES (8)
54 #define EDID_DELAY 250
55 #define EDID_MAX_SEGM 8
57 #define ADV7511_MAX_WIDTH 1920
58 #define ADV7511_MAX_HEIGHT 1200
59 #define ADV7511_MIN_PIXELCLOCK 20000000
60 #define ADV7511_MAX_PIXELCLOCK 225000000
63 **********************************************************************
65 * Arrays with configuration parameters for the ADV7511
67 **********************************************************************
70 struct i2c_reg_value {
75 struct adv7511_state_edid {
76 /* total number of blocks */
78 /* Number of segments read */
80 u8 data[EDID_MAX_SEGM * 256];
81 /* Number of EDID read retries left */
82 unsigned read_retries;
86 struct adv7511_state {
87 struct adv7511_platform_data pdata;
88 struct v4l2_subdev sd;
90 struct v4l2_ctrl_handler hdl;
95 /* Is the adv7511 powered on? */
97 /* Did we receive hotplug and rx-sense signals? */
99 /* timings from s_dv_timings */
100 struct v4l2_dv_timings dv_timings;
107 struct v4l2_ctrl *hdmi_mode_ctrl;
108 struct v4l2_ctrl *hotplug_ctrl;
109 struct v4l2_ctrl *rx_sense_ctrl;
110 struct v4l2_ctrl *have_edid0_ctrl;
111 struct v4l2_ctrl *rgb_quantization_range_ctrl;
112 struct i2c_client *i2c_edid;
113 struct i2c_client *i2c_pktmem;
114 struct adv7511_state_edid edid;
115 /* Running counter of the number of detected EDIDs (for debugging) */
116 unsigned edid_detect_counter;
117 struct workqueue_struct *work_queue;
118 struct delayed_work edid_handler; /* work entry */
121 static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd);
122 static bool adv7511_check_edid_status(struct v4l2_subdev *sd);
123 static void adv7511_setup(struct v4l2_subdev *sd);
124 static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq);
125 static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq);
128 static const struct v4l2_dv_timings_cap adv7511_timings_cap = {
129 .type = V4L2_DV_BT_656_1120,
130 /* keep this initialization for compatibility with GCC < 4.4.6 */
132 V4L2_INIT_BT_TIMINGS(0, ADV7511_MAX_WIDTH, 0, ADV7511_MAX_HEIGHT,
133 ADV7511_MIN_PIXELCLOCK, ADV7511_MAX_PIXELCLOCK,
134 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
135 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
136 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
137 V4L2_DV_BT_CAP_CUSTOM)
140 static inline struct adv7511_state *get_adv7511_state(struct v4l2_subdev *sd)
142 return container_of(sd, struct adv7511_state, sd);
145 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
147 return &container_of(ctrl->handler, struct adv7511_state, hdl)->sd;
150 /* ------------------------ I2C ----------------------------------------------- */
152 static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
153 u8 command, bool check)
155 union i2c_smbus_data data;
157 if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
158 I2C_SMBUS_READ, command,
159 I2C_SMBUS_BYTE_DATA, &data))
162 v4l_err(client, "error reading %02x, %02x\n",
163 client->addr, command);
167 static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
170 for (i = 0; i < 3; i++) {
171 int ret = adv_smbus_read_byte_data_check(client, command, true);
174 v4l_err(client, "read ok after %d retries\n", i);
178 v4l_err(client, "read failed\n");
182 static int adv7511_rd(struct v4l2_subdev *sd, u8 reg)
184 struct i2c_client *client = v4l2_get_subdevdata(sd);
186 return adv_smbus_read_byte_data(client, reg);
189 static int adv7511_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
191 struct i2c_client *client = v4l2_get_subdevdata(sd);
195 for (i = 0; i < 3; i++) {
196 ret = i2c_smbus_write_byte_data(client, reg, val);
200 v4l2_err(sd, "%s: i2c write error\n", __func__);
204 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
205 and then the value-mask (to be OR-ed). */
206 static inline void adv7511_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
208 adv7511_wr(sd, reg, (adv7511_rd(sd, reg) & clr_mask) | val_mask);
211 static int adv_smbus_read_i2c_block_data(struct i2c_client *client,
212 u8 command, unsigned length, u8 *values)
214 union i2c_smbus_data data;
217 if (length > I2C_SMBUS_BLOCK_MAX)
218 length = I2C_SMBUS_BLOCK_MAX;
219 data.block[0] = length;
221 ret = i2c_smbus_xfer(client->adapter, client->addr, client->flags,
222 I2C_SMBUS_READ, command,
223 I2C_SMBUS_I2C_BLOCK_DATA, &data);
224 memcpy(values, data.block + 1, length);
228 static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf)
230 struct adv7511_state *state = get_adv7511_state(sd);
234 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
236 for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX)
237 err = adv_smbus_read_i2c_block_data(state->i2c_edid, i,
238 I2C_SMBUS_BLOCK_MAX, buf + i);
240 v4l2_err(sd, "%s: i2c read error\n", __func__);
243 static int adv7511_pktmem_rd(struct v4l2_subdev *sd, u8 reg)
245 struct adv7511_state *state = get_adv7511_state(sd);
247 return adv_smbus_read_byte_data(state->i2c_pktmem, reg);
250 static int adv7511_pktmem_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
252 struct adv7511_state *state = get_adv7511_state(sd);
256 for (i = 0; i < 3; i++) {
257 ret = i2c_smbus_write_byte_data(state->i2c_pktmem, reg, val);
261 v4l2_err(sd, "%s: i2c write error\n", __func__);
265 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
266 and then the value-mask (to be OR-ed). */
267 static inline void adv7511_pktmem_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
269 adv7511_pktmem_wr(sd, reg, (adv7511_pktmem_rd(sd, reg) & clr_mask) | val_mask);
272 static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd)
274 return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT;
277 static inline bool adv7511_have_rx_sense(struct v4l2_subdev *sd)
279 return adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT;
282 static void adv7511_csc_conversion_mode(struct v4l2_subdev *sd, u8 mode)
284 adv7511_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5);
287 static void adv7511_csc_coeff(struct v4l2_subdev *sd,
288 u16 A1, u16 A2, u16 A3, u16 A4,
289 u16 B1, u16 B2, u16 B3, u16 B4,
290 u16 C1, u16 C2, u16 C3, u16 C4)
293 adv7511_wr_and_or(sd, 0x18, 0xe0, A1>>8);
294 adv7511_wr(sd, 0x19, A1);
295 adv7511_wr_and_or(sd, 0x1A, 0xe0, A2>>8);
296 adv7511_wr(sd, 0x1B, A2);
297 adv7511_wr_and_or(sd, 0x1c, 0xe0, A3>>8);
298 adv7511_wr(sd, 0x1d, A3);
299 adv7511_wr_and_or(sd, 0x1e, 0xe0, A4>>8);
300 adv7511_wr(sd, 0x1f, A4);
303 adv7511_wr_and_or(sd, 0x20, 0xe0, B1>>8);
304 adv7511_wr(sd, 0x21, B1);
305 adv7511_wr_and_or(sd, 0x22, 0xe0, B2>>8);
306 adv7511_wr(sd, 0x23, B2);
307 adv7511_wr_and_or(sd, 0x24, 0xe0, B3>>8);
308 adv7511_wr(sd, 0x25, B3);
309 adv7511_wr_and_or(sd, 0x26, 0xe0, B4>>8);
310 adv7511_wr(sd, 0x27, B4);
313 adv7511_wr_and_or(sd, 0x28, 0xe0, C1>>8);
314 adv7511_wr(sd, 0x29, C1);
315 adv7511_wr_and_or(sd, 0x2A, 0xe0, C2>>8);
316 adv7511_wr(sd, 0x2B, C2);
317 adv7511_wr_and_or(sd, 0x2C, 0xe0, C3>>8);
318 adv7511_wr(sd, 0x2D, C3);
319 adv7511_wr_and_or(sd, 0x2E, 0xe0, C4>>8);
320 adv7511_wr(sd, 0x2F, C4);
323 static void adv7511_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable)
327 adv7511_csc_conversion_mode(sd, csc_mode);
328 adv7511_csc_coeff(sd,
331 0, 0, 4096-564, 256);
333 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x80);
334 /* AVI infoframe: Limited range RGB (16-235) */
335 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x04);
338 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
339 /* AVI infoframe: Full range RGB (0-255) */
340 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x08);
344 static void adv7511_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd)
346 struct adv7511_state *state = get_adv7511_state(sd);
347 if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
348 /* CE format, not IT */
349 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x00);
352 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x80);
356 static int adv7511_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl)
362 case V4L2_DV_RGB_RANGE_AUTO: {
364 struct adv7511_state *state = get_adv7511_state(sd);
366 if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
367 /* CE format, RGB limited range (16-235) */
368 adv7511_csc_rgb_full2limit(sd, true);
370 /* not CE format, RGB full range (0-255) */
371 adv7511_csc_rgb_full2limit(sd, false);
375 case V4L2_DV_RGB_RANGE_LIMITED:
376 /* RGB limited range (16-235) */
377 adv7511_csc_rgb_full2limit(sd, true);
379 case V4L2_DV_RGB_RANGE_FULL:
380 /* RGB full range (0-255) */
381 adv7511_csc_rgb_full2limit(sd, false);
387 /* ------------------------------ CTRL OPS ------------------------------ */
389 static int adv7511_s_ctrl(struct v4l2_ctrl *ctrl)
391 struct v4l2_subdev *sd = to_sd(ctrl);
392 struct adv7511_state *state = get_adv7511_state(sd);
394 v4l2_dbg(1, debug, sd, "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val);
396 if (state->hdmi_mode_ctrl == ctrl) {
397 /* Set HDMI or DVI-D */
398 adv7511_wr_and_or(sd, 0xaf, 0xfd, ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00);
401 if (state->rgb_quantization_range_ctrl == ctrl)
402 return adv7511_set_rgb_quantization_mode(sd, ctrl);
407 static const struct v4l2_ctrl_ops adv7511_ctrl_ops = {
408 .s_ctrl = adv7511_s_ctrl,
411 /* ---------------------------- CORE OPS ------------------------------------------- */
413 #ifdef CONFIG_VIDEO_ADV_DEBUG
414 static void adv7511_inv_register(struct v4l2_subdev *sd)
416 v4l2_info(sd, "0x000-0x0ff: Main Map\n");
419 static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
422 switch (reg->reg >> 8) {
424 reg->val = adv7511_rd(sd, reg->reg & 0xff);
427 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
428 adv7511_inv_register(sd);
434 static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
436 switch (reg->reg >> 8) {
438 adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff);
441 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
442 adv7511_inv_register(sd);
449 struct adv7511_cfg_read_infoframe {
457 static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
462 /* compute checksum */
463 for (i = 0; i < size; i++)
469 static void log_infoframe(struct v4l2_subdev *sd, const struct adv7511_cfg_read_infoframe *cri)
471 struct i2c_client *client = v4l2_get_subdevdata(sd);
472 struct device *dev = &client->dev;
473 union hdmi_infoframe frame;
478 if (!(adv7511_rd(sd, cri->present_reg) & cri->present_mask)) {
479 v4l2_info(sd, "%s infoframe not transmitted\n", cri->desc);
483 memcpy(buffer, cri->header, sizeof(cri->header));
487 if (len + 4 > sizeof(buffer)) {
488 v4l2_err(sd, "%s: invalid %s infoframe length %d\n", __func__, cri->desc, len);
492 if (cri->payload_addr >= 0x100) {
493 for (i = 0; i < len; i++)
494 buffer[i + 4] = adv7511_pktmem_rd(sd, cri->payload_addr + i - 0x100);
496 for (i = 0; i < len; i++)
497 buffer[i + 4] = adv7511_rd(sd, cri->payload_addr + i);
500 buffer[3] = hdmi_infoframe_checksum(buffer, len + 4);
502 if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
503 v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__, cri->desc);
507 hdmi_infoframe_log(KERN_INFO, dev, &frame);
510 static void adv7511_log_infoframes(struct v4l2_subdev *sd)
512 static const struct adv7511_cfg_read_infoframe cri[] = {
513 { "AVI", 0x44, 0x10, { 0x82, 2, 13 }, 0x55 },
514 { "Audio", 0x44, 0x08, { 0x84, 1, 10 }, 0x73 },
515 { "SDP", 0x40, 0x40, { 0x83, 1, 25 }, 0x103 },
519 for (i = 0; i < ARRAY_SIZE(cri); i++)
520 log_infoframe(sd, &cri[i]);
523 static int adv7511_log_status(struct v4l2_subdev *sd)
525 struct adv7511_state *state = get_adv7511_state(sd);
526 struct adv7511_state_edid *edid = &state->edid;
528 static const char * const states[] = {
534 "initializing HDCP repeater",
535 "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"
537 static const char * const errors[] = {
544 "max repeater cascade exceeded",
547 "9", "A", "B", "C", "D", "E", "F"
550 v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off");
551 v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n",
552 (adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT) ? "detected" : "no",
553 (adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT) ? "detected" : "no",
554 edid->segments ? "found" : "no",
556 v4l2_info(sd, "%s output %s\n",
557 (adv7511_rd(sd, 0xaf) & 0x02) ?
559 (adv7511_rd(sd, 0xa1) & 0x3c) ?
560 "disabled" : "enabled");
561 v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n",
562 states[adv7511_rd(sd, 0xc8) & 0xf],
563 errors[adv7511_rd(sd, 0xc8) >> 4], state->edid_detect_counter,
564 adv7511_rd(sd, 0x94), adv7511_rd(sd, 0x96));
565 v4l2_info(sd, "RGB quantization: %s range\n", adv7511_rd(sd, 0x18) & 0x80 ? "limited" : "full");
566 if (adv7511_rd(sd, 0xaf) & 0x02) {
568 u8 manual_cts = adv7511_rd(sd, 0x0a) & 0x80;
569 u32 N = (adv7511_rd(sd, 0x01) & 0xf) << 16 |
570 adv7511_rd(sd, 0x02) << 8 |
571 adv7511_rd(sd, 0x03);
572 u8 vic_detect = adv7511_rd(sd, 0x3e) >> 2;
573 u8 vic_sent = adv7511_rd(sd, 0x3d) & 0x3f;
577 CTS = (adv7511_rd(sd, 0x07) & 0xf) << 16 |
578 adv7511_rd(sd, 0x08) << 8 |
579 adv7511_rd(sd, 0x09);
581 CTS = (adv7511_rd(sd, 0x04) & 0xf) << 16 |
582 adv7511_rd(sd, 0x05) << 8 |
583 adv7511_rd(sd, 0x06);
584 v4l2_info(sd, "CTS %s mode: N %d, CTS %d\n",
585 manual_cts ? "manual" : "automatic", N, CTS);
586 v4l2_info(sd, "VIC: detected %d, sent %d\n",
587 vic_detect, vic_sent);
588 adv7511_log_infoframes(sd);
590 if (state->dv_timings.type == V4L2_DV_BT_656_1120)
591 v4l2_print_dv_timings(sd->name, "timings: ",
592 &state->dv_timings, false);
594 v4l2_info(sd, "no timings set\n");
595 v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr);
596 v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr);
597 v4l2_info(sd, "i2c pktmem addr: 0x%x\n", state->i2c_pktmem_addr);
601 /* Power up/down adv7511 */
602 static int adv7511_s_power(struct v4l2_subdev *sd, int on)
604 struct adv7511_state *state = get_adv7511_state(sd);
605 const int retries = 20;
608 v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");
610 state->power_on = on;
614 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
619 /* The adv7511 does not always come up immediately.
620 Retry multiple times. */
621 for (i = 0; i < retries; i++) {
622 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x0);
623 if ((adv7511_rd(sd, 0x41) & 0x40) == 0)
625 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
629 v4l2_dbg(1, debug, sd, "%s: failed to powerup the adv7511!\n", __func__);
630 adv7511_s_power(sd, 0);
634 v4l2_dbg(1, debug, sd, "%s: needed %d retries to powerup the adv7511\n", __func__, i);
636 /* Reserved registers that must be set */
637 adv7511_wr(sd, 0x98, 0x03);
638 adv7511_wr_and_or(sd, 0x9a, 0xfe, 0x70);
639 adv7511_wr(sd, 0x9c, 0x30);
640 adv7511_wr_and_or(sd, 0x9d, 0xfc, 0x01);
641 adv7511_wr(sd, 0xa2, 0xa4);
642 adv7511_wr(sd, 0xa3, 0xa4);
643 adv7511_wr(sd, 0xe0, 0xd0);
644 adv7511_wr(sd, 0xf9, 0x00);
646 adv7511_wr(sd, 0x43, state->i2c_edid_addr);
647 adv7511_wr(sd, 0x45, state->i2c_pktmem_addr);
649 /* Set number of attempts to read the EDID */
650 adv7511_wr(sd, 0xc9, 0xf);
654 /* Enable interrupts */
655 static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
657 u8 irqs = MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT;
661 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable");
663 /* The datasheet says that the EDID ready interrupt should be
664 disabled if there is no hotplug. */
667 else if (adv7511_have_hotplug(sd))
668 irqs |= MASK_ADV7511_EDID_RDY_INT;
671 * This i2c write can fail (approx. 1 in 1000 writes). But it
672 * is essential that this register is correct, so retry it
675 * Note that the i2c write does not report an error, but the readback
676 * clearly shows the wrong value.
679 adv7511_wr(sd, 0x94, irqs);
680 irqs_rd = adv7511_rd(sd, 0x94);
681 } while (retries-- && irqs_rd != irqs);
685 v4l2_err(sd, "Could not set interrupts: hw failure?\n");
688 /* Interrupt handler */
689 static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
693 /* disable interrupts to prevent a race condition */
694 adv7511_set_isr(sd, false);
695 irq_status = adv7511_rd(sd, 0x96);
696 /* clear detected interrupts */
697 adv7511_wr(sd, 0x96, irq_status);
699 v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status);
701 if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT))
702 adv7511_check_monitor_present_status(sd);
703 if (irq_status & MASK_ADV7511_EDID_RDY_INT)
704 adv7511_check_edid_status(sd);
706 /* enable interrupts */
707 adv7511_set_isr(sd, true);
714 static const struct v4l2_subdev_core_ops adv7511_core_ops = {
715 .log_status = adv7511_log_status,
716 #ifdef CONFIG_VIDEO_ADV_DEBUG
717 .g_register = adv7511_g_register,
718 .s_register = adv7511_s_register,
720 .s_power = adv7511_s_power,
721 .interrupt_service_routine = adv7511_isr,
724 /* ------------------------------ VIDEO OPS ------------------------------ */
726 /* Enable/disable adv7511 output */
727 static int adv7511_s_stream(struct v4l2_subdev *sd, int enable)
729 struct adv7511_state *state = get_adv7511_state(sd);
731 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
732 adv7511_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c));
734 adv7511_check_monitor_present_status(sd);
736 adv7511_s_power(sd, 0);
737 state->have_monitor = false;
742 static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
743 struct v4l2_dv_timings *timings)
745 struct adv7511_state *state = get_adv7511_state(sd);
747 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
749 /* quick sanity check */
750 if (!v4l2_valid_dv_timings(timings, &adv7511_timings_cap, NULL, NULL))
753 /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
754 if the format is one of the CEA or DMT timings. */
755 v4l2_find_dv_timings_cap(timings, &adv7511_timings_cap, 0, NULL, NULL);
757 timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
760 state->dv_timings = *timings;
762 /* update quantization range based on new dv_timings */
763 adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl);
765 /* update AVI infoframe */
766 adv7511_set_IT_content_AVI_InfoFrame(sd);
771 static int adv7511_g_dv_timings(struct v4l2_subdev *sd,
772 struct v4l2_dv_timings *timings)
774 struct adv7511_state *state = get_adv7511_state(sd);
776 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
781 *timings = state->dv_timings;
786 static int adv7511_enum_dv_timings(struct v4l2_subdev *sd,
787 struct v4l2_enum_dv_timings *timings)
789 if (timings->pad != 0)
792 return v4l2_enum_dv_timings_cap(timings, &adv7511_timings_cap, NULL, NULL);
795 static int adv7511_dv_timings_cap(struct v4l2_subdev *sd,
796 struct v4l2_dv_timings_cap *cap)
801 *cap = adv7511_timings_cap;
805 static const struct v4l2_subdev_video_ops adv7511_video_ops = {
806 .s_stream = adv7511_s_stream,
807 .s_dv_timings = adv7511_s_dv_timings,
808 .g_dv_timings = adv7511_g_dv_timings,
811 /* ------------------------------ AUDIO OPS ------------------------------ */
812 static int adv7511_s_audio_stream(struct v4l2_subdev *sd, int enable)
814 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
817 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x80);
819 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x40);
824 static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
829 case 32000: N = 4096; break;
830 case 44100: N = 6272; break;
831 case 48000: N = 6144; break;
832 case 88200: N = 12544; break;
833 case 96000: N = 12288; break;
834 case 176400: N = 25088; break;
835 case 192000: N = 24576; break;
840 /* Set N (used with CTS to regenerate the audio clock) */
841 adv7511_wr(sd, 0x01, (N >> 16) & 0xf);
842 adv7511_wr(sd, 0x02, (N >> 8) & 0xff);
843 adv7511_wr(sd, 0x03, N & 0xff);
848 static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
853 case 32000: i2s_sf = 0x30; break;
854 case 44100: i2s_sf = 0x00; break;
855 case 48000: i2s_sf = 0x20; break;
856 case 88200: i2s_sf = 0x80; break;
857 case 96000: i2s_sf = 0xa0; break;
858 case 176400: i2s_sf = 0xc0; break;
859 case 192000: i2s_sf = 0xe0; break;
864 /* Set sampling frequency for I2S audio to 48 kHz */
865 adv7511_wr_and_or(sd, 0x15, 0xf, i2s_sf);
870 static int adv7511_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config)
872 /* Only 2 channels in use for application */
873 adv7511_wr_and_or(sd, 0x73, 0xf8, 0x1);
874 /* Speaker mapping */
875 adv7511_wr(sd, 0x76, 0x00);
877 /* 16 bit audio word length */
878 adv7511_wr_and_or(sd, 0x14, 0xf0, 0x02);
883 static const struct v4l2_subdev_audio_ops adv7511_audio_ops = {
884 .s_stream = adv7511_s_audio_stream,
885 .s_clock_freq = adv7511_s_clock_freq,
886 .s_i2s_clock_freq = adv7511_s_i2s_clock_freq,
887 .s_routing = adv7511_s_routing,
890 /* ---------------------------- PAD OPS ------------------------------------- */
892 static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
894 struct adv7511_state *state = get_adv7511_state(sd);
896 memset(edid->reserved, 0, sizeof(edid->reserved));
901 if (edid->start_block == 0 && edid->blocks == 0) {
902 edid->blocks = state->edid.segments * 2;
906 if (state->edid.segments == 0)
909 if (edid->start_block >= state->edid.segments * 2)
912 if (edid->start_block + edid->blocks > state->edid.segments * 2)
913 edid->blocks = state->edid.segments * 2 - edid->start_block;
915 memcpy(edid->edid, &state->edid.data[edid->start_block * 128],
921 static int adv7511_enum_mbus_code(struct v4l2_subdev *sd,
922 struct v4l2_subdev_pad_config *cfg,
923 struct v4l2_subdev_mbus_code_enum *code)
928 switch (code->index) {
930 code->code = MEDIA_BUS_FMT_RGB888_1X24;
933 code->code = MEDIA_BUS_FMT_YUYV8_1X16;
936 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
944 static void adv7511_fill_format(struct adv7511_state *state,
945 struct v4l2_mbus_framefmt *format)
947 memset(format, 0, sizeof(*format));
949 format->width = state->dv_timings.bt.width;
950 format->height = state->dv_timings.bt.height;
951 format->field = V4L2_FIELD_NONE;
954 static int adv7511_get_fmt(struct v4l2_subdev *sd,
955 struct v4l2_subdev_pad_config *cfg,
956 struct v4l2_subdev_format *format)
958 struct adv7511_state *state = get_adv7511_state(sd);
960 if (format->pad != 0)
963 adv7511_fill_format(state, &format->format);
965 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
966 struct v4l2_mbus_framefmt *fmt;
968 fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
969 format->format.code = fmt->code;
970 format->format.colorspace = fmt->colorspace;
971 format->format.ycbcr_enc = fmt->ycbcr_enc;
972 format->format.quantization = fmt->quantization;
973 format->format.xfer_func = fmt->xfer_func;
975 format->format.code = state->fmt_code;
976 format->format.colorspace = state->colorspace;
977 format->format.ycbcr_enc = state->ycbcr_enc;
978 format->format.quantization = state->quantization;
979 format->format.xfer_func = state->xfer_func;
985 static int adv7511_set_fmt(struct v4l2_subdev *sd,
986 struct v4l2_subdev_pad_config *cfg,
987 struct v4l2_subdev_format *format)
989 struct adv7511_state *state = get_adv7511_state(sd);
991 * Bitfield namings come the CEA-861-F standard, table 8 "Auxiliary
992 * Video Information (AVI) InfoFrame Format"
995 * ec = Extended Colorimetry
997 * q = RGB Quantization Range
998 * yq = YCC Quantization Range
1000 u8 c = HDMI_COLORIMETRY_NONE;
1001 u8 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1002 u8 y = HDMI_COLORSPACE_RGB;
1003 u8 q = HDMI_QUANTIZATION_RANGE_DEFAULT;
1004 u8 yq = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
1006 if (format->pad != 0)
1008 switch (format->format.code) {
1009 case MEDIA_BUS_FMT_UYVY8_1X16:
1010 case MEDIA_BUS_FMT_YUYV8_1X16:
1011 case MEDIA_BUS_FMT_RGB888_1X24:
1017 adv7511_fill_format(state, &format->format);
1018 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1019 struct v4l2_mbus_framefmt *fmt;
1021 fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
1022 fmt->code = format->format.code;
1023 fmt->colorspace = format->format.colorspace;
1024 fmt->ycbcr_enc = format->format.ycbcr_enc;
1025 fmt->quantization = format->format.quantization;
1026 fmt->xfer_func = format->format.xfer_func;
1030 switch (format->format.code) {
1031 case MEDIA_BUS_FMT_UYVY8_1X16:
1032 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
1033 adv7511_wr_and_or(sd, 0x16, 0x03, 0xb8);
1034 y = HDMI_COLORSPACE_YUV422;
1036 case MEDIA_BUS_FMT_YUYV8_1X16:
1037 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
1038 adv7511_wr_and_or(sd, 0x16, 0x03, 0xbc);
1039 y = HDMI_COLORSPACE_YUV422;
1041 case MEDIA_BUS_FMT_RGB888_1X24:
1043 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x00);
1044 adv7511_wr_and_or(sd, 0x16, 0x03, 0x00);
1047 state->fmt_code = format->format.code;
1048 state->colorspace = format->format.colorspace;
1049 state->ycbcr_enc = format->format.ycbcr_enc;
1050 state->quantization = format->format.quantization;
1051 state->xfer_func = format->format.xfer_func;
1053 switch (format->format.colorspace) {
1054 case V4L2_COLORSPACE_ADOBERGB:
1055 c = HDMI_COLORIMETRY_EXTENDED;
1056 ec = y ? HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601 :
1057 HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB;
1059 case V4L2_COLORSPACE_SMPTE170M:
1060 c = y ? HDMI_COLORIMETRY_ITU_601 : HDMI_COLORIMETRY_NONE;
1061 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV601) {
1062 c = HDMI_COLORIMETRY_EXTENDED;
1063 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1066 case V4L2_COLORSPACE_REC709:
1067 c = y ? HDMI_COLORIMETRY_ITU_709 : HDMI_COLORIMETRY_NONE;
1068 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV709) {
1069 c = HDMI_COLORIMETRY_EXTENDED;
1070 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
1073 case V4L2_COLORSPACE_SRGB:
1074 c = y ? HDMI_COLORIMETRY_EXTENDED : HDMI_COLORIMETRY_NONE;
1075 ec = y ? HDMI_EXTENDED_COLORIMETRY_S_YCC_601 :
1076 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1078 case V4L2_COLORSPACE_BT2020:
1079 c = HDMI_COLORIMETRY_EXTENDED;
1080 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_BT2020_CONST_LUM)
1081 ec = 5; /* Not yet available in hdmi.h */
1083 ec = 6; /* Not yet available in hdmi.h */
1090 * CEA-861-F says that for RGB formats the YCC range must match the
1091 * RGB range, although sources should ignore the YCC range.
1093 * The RGB quantization range shouldn't be non-zero if the EDID doesn't
1094 * have the Q bit set in the Video Capabilities Data Block, however this
1095 * isn't checked at the moment. The assumption is that the application
1096 * knows the EDID and can detect this.
1098 * The same is true for the YCC quantization range: non-standard YCC
1099 * quantization ranges should only be sent if the EDID has the YQ bit
1100 * set in the Video Capabilities Data Block.
1102 switch (format->format.quantization) {
1103 case V4L2_QUANTIZATION_FULL_RANGE:
1104 q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
1105 HDMI_QUANTIZATION_RANGE_FULL;
1106 yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_FULL;
1108 case V4L2_QUANTIZATION_LIM_RANGE:
1109 q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
1110 HDMI_QUANTIZATION_RANGE_LIMITED;
1111 yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
1115 adv7511_wr_and_or(sd, 0x4a, 0xbf, 0);
1116 adv7511_wr_and_or(sd, 0x55, 0x9f, y << 5);
1117 adv7511_wr_and_or(sd, 0x56, 0x3f, c << 6);
1118 adv7511_wr_and_or(sd, 0x57, 0x83, (ec << 4) | (q << 2));
1119 adv7511_wr_and_or(sd, 0x59, 0x0f, yq << 4);
1120 adv7511_wr_and_or(sd, 0x4a, 0xff, 1);
1125 static const struct v4l2_subdev_pad_ops adv7511_pad_ops = {
1126 .get_edid = adv7511_get_edid,
1127 .enum_mbus_code = adv7511_enum_mbus_code,
1128 .get_fmt = adv7511_get_fmt,
1129 .set_fmt = adv7511_set_fmt,
1130 .enum_dv_timings = adv7511_enum_dv_timings,
1131 .dv_timings_cap = adv7511_dv_timings_cap,
1134 /* --------------------- SUBDEV OPS --------------------------------------- */
1136 static const struct v4l2_subdev_ops adv7511_ops = {
1137 .core = &adv7511_core_ops,
1138 .pad = &adv7511_pad_ops,
1139 .video = &adv7511_video_ops,
1140 .audio = &adv7511_audio_ops,
1143 /* ----------------------------------------------------------------------- */
1144 static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, int segment, u8 *buf)
1148 v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment);
1149 for (i = 0; i < 256; i += 16) {
1153 v4l2_dbg(lvl, debug, sd, "\n");
1154 for (j = i; j < i + 16; j++) {
1155 sprintf(bp, "0x%02x, ", buf[j]);
1159 v4l2_dbg(lvl, debug, sd, "%s\n", b);
1164 static void adv7511_notify_no_edid(struct v4l2_subdev *sd)
1166 struct adv7511_state *state = get_adv7511_state(sd);
1167 struct adv7511_edid_detect ed;
1169 /* We failed to read the EDID, so send an event for this. */
1171 ed.segment = adv7511_rd(sd, 0xc4);
1172 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
1173 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x0);
1176 static void adv7511_edid_handler(struct work_struct *work)
1178 struct delayed_work *dwork = to_delayed_work(work);
1179 struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler);
1180 struct v4l2_subdev *sd = &state->sd;
1182 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1184 if (adv7511_check_edid_status(sd)) {
1185 /* Return if we received the EDID. */
1189 if (adv7511_have_hotplug(sd)) {
1190 /* We must retry reading the EDID several times, it is possible
1191 * that initially the EDID couldn't be read due to i2c errors
1192 * (DVI connectors are particularly prone to this problem). */
1193 if (state->edid.read_retries) {
1194 state->edid.read_retries--;
1195 v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__);
1196 state->have_monitor = false;
1197 adv7511_s_power(sd, false);
1198 adv7511_s_power(sd, true);
1199 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1204 /* We failed to read the EDID, so send an event for this. */
1205 adv7511_notify_no_edid(sd);
1206 v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
1209 static void adv7511_audio_setup(struct v4l2_subdev *sd)
1211 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1213 adv7511_s_i2s_clock_freq(sd, 48000);
1214 adv7511_s_clock_freq(sd, 48000);
1215 adv7511_s_routing(sd, 0, 0, 0);
1218 /* Configure hdmi transmitter. */
1219 static void adv7511_setup(struct v4l2_subdev *sd)
1221 struct adv7511_state *state = get_adv7511_state(sd);
1222 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1224 /* Input format: RGB 4:4:4 */
1225 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x0);
1226 /* Output format: RGB 4:4:4 */
1227 adv7511_wr_and_or(sd, 0x16, 0x7f, 0x0);
1228 /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, Aspect ratio: 16:9 */
1229 adv7511_wr_and_or(sd, 0x17, 0xf9, 0x06);
1230 /* Disable pixel repetition */
1231 adv7511_wr_and_or(sd, 0x3b, 0x9f, 0x0);
1233 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
1234 /* Output format: RGB 4:4:4, Active Format Information is valid,
1236 adv7511_wr_and_or(sd, 0x55, 0x9c, 0x12);
1237 /* AVI Info frame packet enable, Audio Info frame disable */
1238 adv7511_wr_and_or(sd, 0x44, 0xe7, 0x10);
1239 /* Colorimetry, Active format aspect ratio: same as picure. */
1240 adv7511_wr(sd, 0x56, 0xa8);
1242 adv7511_wr_and_or(sd, 0xaf, 0xed, 0x0);
1244 /* Positive clk edge capture for input video clock */
1245 adv7511_wr_and_or(sd, 0xba, 0x1f, 0x60);
1247 adv7511_audio_setup(sd);
1249 v4l2_ctrl_handler_setup(&state->hdl);
1252 static void adv7511_notify_monitor_detect(struct v4l2_subdev *sd)
1254 struct adv7511_monitor_detect mdt;
1255 struct adv7511_state *state = get_adv7511_state(sd);
1257 mdt.present = state->have_monitor;
1258 v4l2_subdev_notify(sd, ADV7511_MONITOR_DETECT, (void *)&mdt);
1261 static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
1263 struct adv7511_state *state = get_adv7511_state(sd);
1264 /* read hotplug and rx-sense state */
1265 u8 status = adv7511_rd(sd, 0x42);
1267 v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n",
1270 status & MASK_ADV7511_HPD_DETECT ? ", hotplug" : "",
1271 status & MASK_ADV7511_MSEN_DETECT ? ", rx-sense" : "");
1273 /* update read only ctrls */
1274 v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0);
1275 v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0);
1277 if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_MSEN_DETECT) || state->edid.segments)) {
1278 v4l2_dbg(1, debug, sd, "%s: hotplug and (rx-sense or edid)\n", __func__);
1279 if (!state->have_monitor) {
1280 v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__);
1281 state->have_monitor = true;
1282 adv7511_set_isr(sd, true);
1283 if (!adv7511_s_power(sd, true)) {
1284 v4l2_dbg(1, debug, sd, "%s: monitor detected, powerup failed\n", __func__);
1288 adv7511_notify_monitor_detect(sd);
1289 state->edid.read_retries = EDID_MAX_RETRIES;
1290 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1292 } else if (status & MASK_ADV7511_HPD_DETECT) {
1293 v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__);
1294 state->edid.read_retries = EDID_MAX_RETRIES;
1295 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1296 } else if (!(status & MASK_ADV7511_HPD_DETECT)) {
1297 v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__);
1298 if (state->have_monitor) {
1299 v4l2_dbg(1, debug, sd, "%s: monitor not detected\n", __func__);
1300 state->have_monitor = false;
1301 adv7511_notify_monitor_detect(sd);
1303 adv7511_s_power(sd, false);
1304 memset(&state->edid, 0, sizeof(struct adv7511_state_edid));
1305 adv7511_notify_no_edid(sd);
1309 static bool edid_block_verify_crc(u8 *edid_block)
1314 for (i = 0; i < 128; i++)
1315 sum += edid_block[i];
1319 static bool edid_verify_crc(struct v4l2_subdev *sd, u32 segment)
1321 struct adv7511_state *state = get_adv7511_state(sd);
1322 u32 blocks = state->edid.blocks;
1323 u8 *data = state->edid.data;
1325 if (!edid_block_verify_crc(&data[segment * 256]))
1327 if ((segment + 1) * 2 <= blocks)
1328 return edid_block_verify_crc(&data[segment * 256 + 128]);
1332 static bool edid_verify_header(struct v4l2_subdev *sd, u32 segment)
1334 static const u8 hdmi_header[] = {
1335 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
1337 struct adv7511_state *state = get_adv7511_state(sd);
1338 u8 *data = state->edid.data;
1342 return !memcmp(data, hdmi_header, sizeof(hdmi_header));
1345 static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
1347 struct adv7511_state *state = get_adv7511_state(sd);
1348 u8 edidRdy = adv7511_rd(sd, 0xc5);
1350 v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n",
1351 __func__, EDID_MAX_RETRIES - state->edid.read_retries);
1353 if (state->edid.complete)
1356 if (edidRdy & MASK_ADV7511_EDID_RDY) {
1357 int segment = adv7511_rd(sd, 0xc4);
1358 struct adv7511_edid_detect ed;
1360 if (segment >= EDID_MAX_SEGM) {
1361 v4l2_err(sd, "edid segment number too big\n");
1364 v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment);
1365 adv7511_edid_rd(sd, 256, &state->edid.data[segment * 256]);
1366 adv7511_dbg_dump_edid(2, debug, sd, segment, &state->edid.data[segment * 256]);
1368 state->edid.blocks = state->edid.data[0x7e] + 1;
1369 v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", __func__, state->edid.blocks);
1371 if (!edid_verify_crc(sd, segment) ||
1372 !edid_verify_header(sd, segment)) {
1373 /* edid crc error, force reread of edid segment */
1374 v4l2_err(sd, "%s: edid crc or header error\n", __func__);
1375 state->have_monitor = false;
1376 adv7511_s_power(sd, false);
1377 adv7511_s_power(sd, true);
1380 /* one more segment read ok */
1381 state->edid.segments = segment + 1;
1382 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x1);
1383 if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) {
1384 /* Request next EDID segment */
1385 v4l2_dbg(1, debug, sd, "%s: request segment %d\n", __func__, state->edid.segments);
1386 adv7511_wr(sd, 0xc9, 0xf);
1387 adv7511_wr(sd, 0xc4, state->edid.segments);
1388 state->edid.read_retries = EDID_MAX_RETRIES;
1389 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1393 v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments);
1394 state->edid.complete = true;
1396 /* report when we have all segments
1397 but report only for segment 0
1401 state->edid_detect_counter++;
1402 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
1409 /* ----------------------------------------------------------------------- */
1411 static void adv7511_init_setup(struct v4l2_subdev *sd)
1413 struct adv7511_state *state = get_adv7511_state(sd);
1414 struct adv7511_state_edid *edid = &state->edid;
1416 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1418 /* clear all interrupts */
1419 adv7511_wr(sd, 0x96, 0xff);
1421 * Stop HPD from resetting a lot of registers.
1422 * It might leave the chip in a partly un-initialized state,
1423 * in particular with regards to hotplug bounces.
1425 adv7511_wr_and_or(sd, 0xd6, 0x3f, 0xc0);
1426 memset(edid, 0, sizeof(struct adv7511_state_edid));
1427 state->have_monitor = false;
1428 adv7511_set_isr(sd, false);
1429 adv7511_s_stream(sd, false);
1430 adv7511_s_audio_stream(sd, false);
1433 static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id)
1435 struct adv7511_state *state;
1436 struct adv7511_platform_data *pdata = client->dev.platform_data;
1437 struct v4l2_ctrl_handler *hdl;
1438 struct v4l2_subdev *sd;
1442 /* Check if the adapter supports the needed features */
1443 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1446 state = devm_kzalloc(&client->dev, sizeof(struct adv7511_state), GFP_KERNEL);
1452 v4l_err(client, "No platform data!\n");
1455 memcpy(&state->pdata, pdata, sizeof(state->pdata));
1456 state->fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
1457 state->colorspace = V4L2_COLORSPACE_SRGB;
1461 v4l2_dbg(1, debug, sd, "detecting adv7511 client on address 0x%x\n",
1464 v4l2_i2c_subdev_init(sd, client, &adv7511_ops);
1467 v4l2_ctrl_handler_init(hdl, 10);
1468 /* add in ascending ID order */
1469 state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1470 V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI,
1471 0, V4L2_DV_TX_MODE_DVI_D);
1472 state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1473 V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0);
1474 state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1475 V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0);
1476 state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1477 V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0);
1478 state->rgb_quantization_range_ctrl =
1479 v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1480 V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL,
1481 0, V4L2_DV_RGB_RANGE_AUTO);
1482 sd->ctrl_handler = hdl;
1487 state->hdmi_mode_ctrl->is_private = true;
1488 state->hotplug_ctrl->is_private = true;
1489 state->rx_sense_ctrl->is_private = true;
1490 state->have_edid0_ctrl->is_private = true;
1491 state->rgb_quantization_range_ctrl->is_private = true;
1493 state->pad.flags = MEDIA_PAD_FL_SINK;
1494 err = media_entity_init(&sd->entity, 1, &state->pad, 0);
1498 /* EDID and CEC i2c addr */
1499 state->i2c_edid_addr = state->pdata.i2c_edid << 1;
1500 state->i2c_cec_addr = state->pdata.i2c_cec << 1;
1501 state->i2c_pktmem_addr = state->pdata.i2c_pktmem << 1;
1503 state->chip_revision = adv7511_rd(sd, 0x0);
1504 chip_id[0] = adv7511_rd(sd, 0xf5);
1505 chip_id[1] = adv7511_rd(sd, 0xf6);
1506 if (chip_id[0] != 0x75 || chip_id[1] != 0x11) {
1507 v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]);
1512 state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1);
1513 if (state->i2c_edid == NULL) {
1514 v4l2_err(sd, "failed to register edid i2c client\n");
1519 state->i2c_pktmem = i2c_new_dummy(client->adapter, state->i2c_pktmem_addr >> 1);
1520 if (state->i2c_pktmem == NULL) {
1521 v4l2_err(sd, "failed to register pktmem i2c client\n");
1523 goto err_unreg_edid;
1526 adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
1527 state->work_queue = create_singlethread_workqueue(sd->name);
1528 if (state->work_queue == NULL) {
1529 v4l2_err(sd, "could not create workqueue\n");
1531 goto err_unreg_pktmem;
1534 INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler);
1536 adv7511_init_setup(sd);
1537 adv7511_set_isr(sd, true);
1538 adv7511_check_monitor_present_status(sd);
1540 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
1541 client->addr << 1, client->adapter->name);
1545 i2c_unregister_device(state->i2c_pktmem);
1547 i2c_unregister_device(state->i2c_edid);
1549 media_entity_cleanup(&sd->entity);
1551 v4l2_ctrl_handler_free(&state->hdl);
1555 /* ----------------------------------------------------------------------- */
1557 static int adv7511_remove(struct i2c_client *client)
1559 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1560 struct adv7511_state *state = get_adv7511_state(sd);
1562 state->chip_revision = -1;
1564 v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
1565 client->addr << 1, client->adapter->name);
1567 adv7511_init_setup(sd);
1568 cancel_delayed_work(&state->edid_handler);
1569 i2c_unregister_device(state->i2c_edid);
1570 i2c_unregister_device(state->i2c_pktmem);
1571 destroy_workqueue(state->work_queue);
1572 v4l2_device_unregister_subdev(sd);
1573 media_entity_cleanup(&sd->entity);
1574 v4l2_ctrl_handler_free(sd->ctrl_handler);
1578 /* ----------------------------------------------------------------------- */
1580 static struct i2c_device_id adv7511_id[] = {
1584 MODULE_DEVICE_TABLE(i2c, adv7511_id);
1586 static struct i2c_driver adv7511_driver = {
1590 .probe = adv7511_probe,
1591 .remove = adv7511_remove,
1592 .id_table = adv7511_id,
1595 module_i2c_driver(adv7511_driver);