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/i2c/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;
108 struct v4l2_ctrl *hdmi_mode_ctrl;
109 struct v4l2_ctrl *hotplug_ctrl;
110 struct v4l2_ctrl *rx_sense_ctrl;
111 struct v4l2_ctrl *have_edid0_ctrl;
112 struct v4l2_ctrl *rgb_quantization_range_ctrl;
113 struct v4l2_ctrl *content_type_ctrl;
114 struct i2c_client *i2c_edid;
115 struct i2c_client *i2c_pktmem;
116 struct adv7511_state_edid edid;
117 /* Running counter of the number of detected EDIDs (for debugging) */
118 unsigned edid_detect_counter;
119 struct workqueue_struct *work_queue;
120 struct delayed_work edid_handler; /* work entry */
123 static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd);
124 static bool adv7511_check_edid_status(struct v4l2_subdev *sd);
125 static void adv7511_setup(struct v4l2_subdev *sd);
126 static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq);
127 static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq);
130 static const struct v4l2_dv_timings_cap adv7511_timings_cap = {
131 .type = V4L2_DV_BT_656_1120,
132 /* keep this initialization for compatibility with GCC < 4.4.6 */
134 V4L2_INIT_BT_TIMINGS(0, ADV7511_MAX_WIDTH, 0, ADV7511_MAX_HEIGHT,
135 ADV7511_MIN_PIXELCLOCK, ADV7511_MAX_PIXELCLOCK,
136 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
137 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
138 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
139 V4L2_DV_BT_CAP_CUSTOM)
142 static inline struct adv7511_state *get_adv7511_state(struct v4l2_subdev *sd)
144 return container_of(sd, struct adv7511_state, sd);
147 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
149 return &container_of(ctrl->handler, struct adv7511_state, hdl)->sd;
152 /* ------------------------ I2C ----------------------------------------------- */
154 static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
155 u8 command, bool check)
157 union i2c_smbus_data data;
159 if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
160 I2C_SMBUS_READ, command,
161 I2C_SMBUS_BYTE_DATA, &data))
164 v4l_err(client, "error reading %02x, %02x\n",
165 client->addr, command);
169 static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
172 for (i = 0; i < 3; i++) {
173 int ret = adv_smbus_read_byte_data_check(client, command, true);
176 v4l_err(client, "read ok after %d retries\n", i);
180 v4l_err(client, "read failed\n");
184 static int adv7511_rd(struct v4l2_subdev *sd, u8 reg)
186 struct i2c_client *client = v4l2_get_subdevdata(sd);
188 return adv_smbus_read_byte_data(client, reg);
191 static int adv7511_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
193 struct i2c_client *client = v4l2_get_subdevdata(sd);
197 for (i = 0; i < 3; i++) {
198 ret = i2c_smbus_write_byte_data(client, reg, val);
202 v4l2_err(sd, "%s: i2c write error\n", __func__);
206 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
207 and then the value-mask (to be OR-ed). */
208 static inline void adv7511_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
210 adv7511_wr(sd, reg, (adv7511_rd(sd, reg) & clr_mask) | val_mask);
213 static int adv_smbus_read_i2c_block_data(struct i2c_client *client,
214 u8 command, unsigned length, u8 *values)
216 union i2c_smbus_data data;
219 if (length > I2C_SMBUS_BLOCK_MAX)
220 length = I2C_SMBUS_BLOCK_MAX;
221 data.block[0] = length;
223 ret = i2c_smbus_xfer(client->adapter, client->addr, client->flags,
224 I2C_SMBUS_READ, command,
225 I2C_SMBUS_I2C_BLOCK_DATA, &data);
226 memcpy(values, data.block + 1, length);
230 static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf)
232 struct adv7511_state *state = get_adv7511_state(sd);
236 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
238 for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX)
239 err = adv_smbus_read_i2c_block_data(state->i2c_edid, i,
240 I2C_SMBUS_BLOCK_MAX, buf + i);
242 v4l2_err(sd, "%s: i2c read error\n", __func__);
245 static int adv7511_pktmem_rd(struct v4l2_subdev *sd, u8 reg)
247 struct adv7511_state *state = get_adv7511_state(sd);
249 return adv_smbus_read_byte_data(state->i2c_pktmem, reg);
252 static int adv7511_pktmem_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
254 struct adv7511_state *state = get_adv7511_state(sd);
258 for (i = 0; i < 3; i++) {
259 ret = i2c_smbus_write_byte_data(state->i2c_pktmem, reg, val);
263 v4l2_err(sd, "%s: i2c write error\n", __func__);
267 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
268 and then the value-mask (to be OR-ed). */
269 static inline void adv7511_pktmem_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
271 adv7511_pktmem_wr(sd, reg, (adv7511_pktmem_rd(sd, reg) & clr_mask) | val_mask);
274 static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd)
276 return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT;
279 static inline bool adv7511_have_rx_sense(struct v4l2_subdev *sd)
281 return adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT;
284 static void adv7511_csc_conversion_mode(struct v4l2_subdev *sd, u8 mode)
286 adv7511_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5);
289 static void adv7511_csc_coeff(struct v4l2_subdev *sd,
290 u16 A1, u16 A2, u16 A3, u16 A4,
291 u16 B1, u16 B2, u16 B3, u16 B4,
292 u16 C1, u16 C2, u16 C3, u16 C4)
295 adv7511_wr_and_or(sd, 0x18, 0xe0, A1>>8);
296 adv7511_wr(sd, 0x19, A1);
297 adv7511_wr_and_or(sd, 0x1A, 0xe0, A2>>8);
298 adv7511_wr(sd, 0x1B, A2);
299 adv7511_wr_and_or(sd, 0x1c, 0xe0, A3>>8);
300 adv7511_wr(sd, 0x1d, A3);
301 adv7511_wr_and_or(sd, 0x1e, 0xe0, A4>>8);
302 adv7511_wr(sd, 0x1f, A4);
305 adv7511_wr_and_or(sd, 0x20, 0xe0, B1>>8);
306 adv7511_wr(sd, 0x21, B1);
307 adv7511_wr_and_or(sd, 0x22, 0xe0, B2>>8);
308 adv7511_wr(sd, 0x23, B2);
309 adv7511_wr_and_or(sd, 0x24, 0xe0, B3>>8);
310 adv7511_wr(sd, 0x25, B3);
311 adv7511_wr_and_or(sd, 0x26, 0xe0, B4>>8);
312 adv7511_wr(sd, 0x27, B4);
315 adv7511_wr_and_or(sd, 0x28, 0xe0, C1>>8);
316 adv7511_wr(sd, 0x29, C1);
317 adv7511_wr_and_or(sd, 0x2A, 0xe0, C2>>8);
318 adv7511_wr(sd, 0x2B, C2);
319 adv7511_wr_and_or(sd, 0x2C, 0xe0, C3>>8);
320 adv7511_wr(sd, 0x2D, C3);
321 adv7511_wr_and_or(sd, 0x2E, 0xe0, C4>>8);
322 adv7511_wr(sd, 0x2F, C4);
325 static void adv7511_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable)
329 adv7511_csc_conversion_mode(sd, csc_mode);
330 adv7511_csc_coeff(sd,
333 0, 0, 4096-564, 256);
335 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x80);
336 /* AVI infoframe: Limited range RGB (16-235) */
337 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x04);
340 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
341 /* AVI infoframe: Full range RGB (0-255) */
342 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x08);
346 static void adv7511_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd)
348 struct adv7511_state *state = get_adv7511_state(sd);
349 if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
350 /* CE format, not IT */
351 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x00);
354 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x80);
358 static int adv7511_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl)
364 case V4L2_DV_RGB_RANGE_AUTO: {
366 struct adv7511_state *state = get_adv7511_state(sd);
368 if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
369 /* CE format, RGB limited range (16-235) */
370 adv7511_csc_rgb_full2limit(sd, true);
372 /* not CE format, RGB full range (0-255) */
373 adv7511_csc_rgb_full2limit(sd, false);
377 case V4L2_DV_RGB_RANGE_LIMITED:
378 /* RGB limited range (16-235) */
379 adv7511_csc_rgb_full2limit(sd, true);
381 case V4L2_DV_RGB_RANGE_FULL:
382 /* RGB full range (0-255) */
383 adv7511_csc_rgb_full2limit(sd, false);
389 /* ------------------------------ CTRL OPS ------------------------------ */
391 static int adv7511_s_ctrl(struct v4l2_ctrl *ctrl)
393 struct v4l2_subdev *sd = to_sd(ctrl);
394 struct adv7511_state *state = get_adv7511_state(sd);
396 v4l2_dbg(1, debug, sd, "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val);
398 if (state->hdmi_mode_ctrl == ctrl) {
399 /* Set HDMI or DVI-D */
400 adv7511_wr_and_or(sd, 0xaf, 0xfd, ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00);
403 if (state->rgb_quantization_range_ctrl == ctrl)
404 return adv7511_set_rgb_quantization_mode(sd, ctrl);
405 if (state->content_type_ctrl == ctrl) {
408 state->content_type = ctrl->val;
409 itc = state->content_type != V4L2_DV_IT_CONTENT_TYPE_NO_ITC;
410 cn = itc ? state->content_type : V4L2_DV_IT_CONTENT_TYPE_GRAPHICS;
411 adv7511_wr_and_or(sd, 0x57, 0x7f, itc << 7);
412 adv7511_wr_and_or(sd, 0x59, 0xcf, cn << 4);
419 static const struct v4l2_ctrl_ops adv7511_ctrl_ops = {
420 .s_ctrl = adv7511_s_ctrl,
423 /* ---------------------------- CORE OPS ------------------------------------------- */
425 #ifdef CONFIG_VIDEO_ADV_DEBUG
426 static void adv7511_inv_register(struct v4l2_subdev *sd)
428 v4l2_info(sd, "0x000-0x0ff: Main Map\n");
431 static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
434 switch (reg->reg >> 8) {
436 reg->val = adv7511_rd(sd, reg->reg & 0xff);
439 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
440 adv7511_inv_register(sd);
446 static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
448 switch (reg->reg >> 8) {
450 adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff);
453 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
454 adv7511_inv_register(sd);
461 struct adv7511_cfg_read_infoframe {
469 static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
474 /* compute checksum */
475 for (i = 0; i < size; i++)
481 static void log_infoframe(struct v4l2_subdev *sd, const struct adv7511_cfg_read_infoframe *cri)
483 struct i2c_client *client = v4l2_get_subdevdata(sd);
484 struct device *dev = &client->dev;
485 union hdmi_infoframe frame;
490 if (!(adv7511_rd(sd, cri->present_reg) & cri->present_mask)) {
491 v4l2_info(sd, "%s infoframe not transmitted\n", cri->desc);
495 memcpy(buffer, cri->header, sizeof(cri->header));
499 if (len + 4 > sizeof(buffer)) {
500 v4l2_err(sd, "%s: invalid %s infoframe length %d\n", __func__, cri->desc, len);
504 if (cri->payload_addr >= 0x100) {
505 for (i = 0; i < len; i++)
506 buffer[i + 4] = adv7511_pktmem_rd(sd, cri->payload_addr + i - 0x100);
508 for (i = 0; i < len; i++)
509 buffer[i + 4] = adv7511_rd(sd, cri->payload_addr + i);
512 buffer[3] = hdmi_infoframe_checksum(buffer, len + 4);
514 if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
515 v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__, cri->desc);
519 hdmi_infoframe_log(KERN_INFO, dev, &frame);
522 static void adv7511_log_infoframes(struct v4l2_subdev *sd)
524 static const struct adv7511_cfg_read_infoframe cri[] = {
525 { "AVI", 0x44, 0x10, { 0x82, 2, 13 }, 0x55 },
526 { "Audio", 0x44, 0x08, { 0x84, 1, 10 }, 0x73 },
527 { "SDP", 0x40, 0x40, { 0x83, 1, 25 }, 0x103 },
531 for (i = 0; i < ARRAY_SIZE(cri); i++)
532 log_infoframe(sd, &cri[i]);
535 static int adv7511_log_status(struct v4l2_subdev *sd)
537 struct adv7511_state *state = get_adv7511_state(sd);
538 struct adv7511_state_edid *edid = &state->edid;
540 static const char * const states[] = {
546 "initializing HDCP repeater",
547 "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"
549 static const char * const errors[] = {
556 "max repeater cascade exceeded",
559 "9", "A", "B", "C", "D", "E", "F"
562 v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off");
563 v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n",
564 (adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT) ? "detected" : "no",
565 (adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT) ? "detected" : "no",
566 edid->segments ? "found" : "no",
568 v4l2_info(sd, "%s output %s\n",
569 (adv7511_rd(sd, 0xaf) & 0x02) ?
571 (adv7511_rd(sd, 0xa1) & 0x3c) ?
572 "disabled" : "enabled");
573 v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n",
574 states[adv7511_rd(sd, 0xc8) & 0xf],
575 errors[adv7511_rd(sd, 0xc8) >> 4], state->edid_detect_counter,
576 adv7511_rd(sd, 0x94), adv7511_rd(sd, 0x96));
577 v4l2_info(sd, "RGB quantization: %s range\n", adv7511_rd(sd, 0x18) & 0x80 ? "limited" : "full");
578 if (adv7511_rd(sd, 0xaf) & 0x02) {
580 u8 manual_cts = adv7511_rd(sd, 0x0a) & 0x80;
581 u32 N = (adv7511_rd(sd, 0x01) & 0xf) << 16 |
582 adv7511_rd(sd, 0x02) << 8 |
583 adv7511_rd(sd, 0x03);
584 u8 vic_detect = adv7511_rd(sd, 0x3e) >> 2;
585 u8 vic_sent = adv7511_rd(sd, 0x3d) & 0x3f;
589 CTS = (adv7511_rd(sd, 0x07) & 0xf) << 16 |
590 adv7511_rd(sd, 0x08) << 8 |
591 adv7511_rd(sd, 0x09);
593 CTS = (adv7511_rd(sd, 0x04) & 0xf) << 16 |
594 adv7511_rd(sd, 0x05) << 8 |
595 adv7511_rd(sd, 0x06);
596 v4l2_info(sd, "CTS %s mode: N %d, CTS %d\n",
597 manual_cts ? "manual" : "automatic", N, CTS);
598 v4l2_info(sd, "VIC: detected %d, sent %d\n",
599 vic_detect, vic_sent);
600 adv7511_log_infoframes(sd);
602 if (state->dv_timings.type == V4L2_DV_BT_656_1120)
603 v4l2_print_dv_timings(sd->name, "timings: ",
604 &state->dv_timings, false);
606 v4l2_info(sd, "no timings set\n");
607 v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr);
608 v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr);
609 v4l2_info(sd, "i2c pktmem addr: 0x%x\n", state->i2c_pktmem_addr);
613 /* Power up/down adv7511 */
614 static int adv7511_s_power(struct v4l2_subdev *sd, int on)
616 struct adv7511_state *state = get_adv7511_state(sd);
617 const int retries = 20;
620 v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");
622 state->power_on = on;
626 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
631 /* The adv7511 does not always come up immediately.
632 Retry multiple times. */
633 for (i = 0; i < retries; i++) {
634 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x0);
635 if ((adv7511_rd(sd, 0x41) & 0x40) == 0)
637 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
641 v4l2_dbg(1, debug, sd, "%s: failed to powerup the adv7511!\n", __func__);
642 adv7511_s_power(sd, 0);
646 v4l2_dbg(1, debug, sd, "%s: needed %d retries to powerup the adv7511\n", __func__, i);
648 /* Reserved registers that must be set */
649 adv7511_wr(sd, 0x98, 0x03);
650 adv7511_wr_and_or(sd, 0x9a, 0xfe, 0x70);
651 adv7511_wr(sd, 0x9c, 0x30);
652 adv7511_wr_and_or(sd, 0x9d, 0xfc, 0x01);
653 adv7511_wr(sd, 0xa2, 0xa4);
654 adv7511_wr(sd, 0xa3, 0xa4);
655 adv7511_wr(sd, 0xe0, 0xd0);
656 adv7511_wr(sd, 0xf9, 0x00);
658 adv7511_wr(sd, 0x43, state->i2c_edid_addr);
659 adv7511_wr(sd, 0x45, state->i2c_pktmem_addr);
661 /* Set number of attempts to read the EDID */
662 adv7511_wr(sd, 0xc9, 0xf);
666 /* Enable interrupts */
667 static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
669 u8 irqs = MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT;
673 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable");
675 /* The datasheet says that the EDID ready interrupt should be
676 disabled if there is no hotplug. */
679 else if (adv7511_have_hotplug(sd))
680 irqs |= MASK_ADV7511_EDID_RDY_INT;
683 * This i2c write can fail (approx. 1 in 1000 writes). But it
684 * is essential that this register is correct, so retry it
687 * Note that the i2c write does not report an error, but the readback
688 * clearly shows the wrong value.
691 adv7511_wr(sd, 0x94, irqs);
692 irqs_rd = adv7511_rd(sd, 0x94);
693 } while (retries-- && irqs_rd != irqs);
697 v4l2_err(sd, "Could not set interrupts: hw failure?\n");
700 /* Interrupt handler */
701 static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
705 /* disable interrupts to prevent a race condition */
706 adv7511_set_isr(sd, false);
707 irq_status = adv7511_rd(sd, 0x96);
708 /* clear detected interrupts */
709 adv7511_wr(sd, 0x96, irq_status);
711 v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status);
713 if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT))
714 adv7511_check_monitor_present_status(sd);
715 if (irq_status & MASK_ADV7511_EDID_RDY_INT)
716 adv7511_check_edid_status(sd);
718 /* enable interrupts */
719 adv7511_set_isr(sd, true);
726 static const struct v4l2_subdev_core_ops adv7511_core_ops = {
727 .log_status = adv7511_log_status,
728 #ifdef CONFIG_VIDEO_ADV_DEBUG
729 .g_register = adv7511_g_register,
730 .s_register = adv7511_s_register,
732 .s_power = adv7511_s_power,
733 .interrupt_service_routine = adv7511_isr,
736 /* ------------------------------ VIDEO OPS ------------------------------ */
738 /* Enable/disable adv7511 output */
739 static int adv7511_s_stream(struct v4l2_subdev *sd, int enable)
741 struct adv7511_state *state = get_adv7511_state(sd);
743 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
744 adv7511_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c));
746 adv7511_check_monitor_present_status(sd);
748 adv7511_s_power(sd, 0);
749 state->have_monitor = false;
754 static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
755 struct v4l2_dv_timings *timings)
757 struct adv7511_state *state = get_adv7511_state(sd);
759 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
761 /* quick sanity check */
762 if (!v4l2_valid_dv_timings(timings, &adv7511_timings_cap, NULL, NULL))
765 /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
766 if the format is one of the CEA or DMT timings. */
767 v4l2_find_dv_timings_cap(timings, &adv7511_timings_cap, 0, NULL, NULL);
769 timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
772 state->dv_timings = *timings;
774 /* update quantization range based on new dv_timings */
775 adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl);
777 /* update AVI infoframe */
778 adv7511_set_IT_content_AVI_InfoFrame(sd);
783 static int adv7511_g_dv_timings(struct v4l2_subdev *sd,
784 struct v4l2_dv_timings *timings)
786 struct adv7511_state *state = get_adv7511_state(sd);
788 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
793 *timings = state->dv_timings;
798 static int adv7511_enum_dv_timings(struct v4l2_subdev *sd,
799 struct v4l2_enum_dv_timings *timings)
801 if (timings->pad != 0)
804 return v4l2_enum_dv_timings_cap(timings, &adv7511_timings_cap, NULL, NULL);
807 static int adv7511_dv_timings_cap(struct v4l2_subdev *sd,
808 struct v4l2_dv_timings_cap *cap)
813 *cap = adv7511_timings_cap;
817 static const struct v4l2_subdev_video_ops adv7511_video_ops = {
818 .s_stream = adv7511_s_stream,
819 .s_dv_timings = adv7511_s_dv_timings,
820 .g_dv_timings = adv7511_g_dv_timings,
823 /* ------------------------------ AUDIO OPS ------------------------------ */
824 static int adv7511_s_audio_stream(struct v4l2_subdev *sd, int enable)
826 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
829 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x80);
831 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x40);
836 static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
841 case 32000: N = 4096; break;
842 case 44100: N = 6272; break;
843 case 48000: N = 6144; break;
844 case 88200: N = 12544; break;
845 case 96000: N = 12288; break;
846 case 176400: N = 25088; break;
847 case 192000: N = 24576; break;
852 /* Set N (used with CTS to regenerate the audio clock) */
853 adv7511_wr(sd, 0x01, (N >> 16) & 0xf);
854 adv7511_wr(sd, 0x02, (N >> 8) & 0xff);
855 adv7511_wr(sd, 0x03, N & 0xff);
860 static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
865 case 32000: i2s_sf = 0x30; break;
866 case 44100: i2s_sf = 0x00; break;
867 case 48000: i2s_sf = 0x20; break;
868 case 88200: i2s_sf = 0x80; break;
869 case 96000: i2s_sf = 0xa0; break;
870 case 176400: i2s_sf = 0xc0; break;
871 case 192000: i2s_sf = 0xe0; break;
876 /* Set sampling frequency for I2S audio to 48 kHz */
877 adv7511_wr_and_or(sd, 0x15, 0xf, i2s_sf);
882 static int adv7511_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config)
884 /* Only 2 channels in use for application */
885 adv7511_wr_and_or(sd, 0x73, 0xf8, 0x1);
886 /* Speaker mapping */
887 adv7511_wr(sd, 0x76, 0x00);
889 /* 16 bit audio word length */
890 adv7511_wr_and_or(sd, 0x14, 0xf0, 0x02);
895 static const struct v4l2_subdev_audio_ops adv7511_audio_ops = {
896 .s_stream = adv7511_s_audio_stream,
897 .s_clock_freq = adv7511_s_clock_freq,
898 .s_i2s_clock_freq = adv7511_s_i2s_clock_freq,
899 .s_routing = adv7511_s_routing,
902 /* ---------------------------- PAD OPS ------------------------------------- */
904 static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
906 struct adv7511_state *state = get_adv7511_state(sd);
908 memset(edid->reserved, 0, sizeof(edid->reserved));
913 if (edid->start_block == 0 && edid->blocks == 0) {
914 edid->blocks = state->edid.segments * 2;
918 if (state->edid.segments == 0)
921 if (edid->start_block >= state->edid.segments * 2)
924 if (edid->start_block + edid->blocks > state->edid.segments * 2)
925 edid->blocks = state->edid.segments * 2 - edid->start_block;
927 memcpy(edid->edid, &state->edid.data[edid->start_block * 128],
933 static int adv7511_enum_mbus_code(struct v4l2_subdev *sd,
934 struct v4l2_subdev_pad_config *cfg,
935 struct v4l2_subdev_mbus_code_enum *code)
940 switch (code->index) {
942 code->code = MEDIA_BUS_FMT_RGB888_1X24;
945 code->code = MEDIA_BUS_FMT_YUYV8_1X16;
948 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
956 static void adv7511_fill_format(struct adv7511_state *state,
957 struct v4l2_mbus_framefmt *format)
959 memset(format, 0, sizeof(*format));
961 format->width = state->dv_timings.bt.width;
962 format->height = state->dv_timings.bt.height;
963 format->field = V4L2_FIELD_NONE;
966 static int adv7511_get_fmt(struct v4l2_subdev *sd,
967 struct v4l2_subdev_pad_config *cfg,
968 struct v4l2_subdev_format *format)
970 struct adv7511_state *state = get_adv7511_state(sd);
972 if (format->pad != 0)
975 adv7511_fill_format(state, &format->format);
977 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
978 struct v4l2_mbus_framefmt *fmt;
980 fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
981 format->format.code = fmt->code;
982 format->format.colorspace = fmt->colorspace;
983 format->format.ycbcr_enc = fmt->ycbcr_enc;
984 format->format.quantization = fmt->quantization;
985 format->format.xfer_func = fmt->xfer_func;
987 format->format.code = state->fmt_code;
988 format->format.colorspace = state->colorspace;
989 format->format.ycbcr_enc = state->ycbcr_enc;
990 format->format.quantization = state->quantization;
991 format->format.xfer_func = state->xfer_func;
997 static int adv7511_set_fmt(struct v4l2_subdev *sd,
998 struct v4l2_subdev_pad_config *cfg,
999 struct v4l2_subdev_format *format)
1001 struct adv7511_state *state = get_adv7511_state(sd);
1003 * Bitfield namings come the CEA-861-F standard, table 8 "Auxiliary
1004 * Video Information (AVI) InfoFrame Format"
1007 * ec = Extended Colorimetry
1009 * q = RGB Quantization Range
1010 * yq = YCC Quantization Range
1012 u8 c = HDMI_COLORIMETRY_NONE;
1013 u8 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1014 u8 y = HDMI_COLORSPACE_RGB;
1015 u8 q = HDMI_QUANTIZATION_RANGE_DEFAULT;
1016 u8 yq = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
1017 u8 itc = state->content_type != V4L2_DV_IT_CONTENT_TYPE_NO_ITC;
1018 u8 cn = itc ? state->content_type : V4L2_DV_IT_CONTENT_TYPE_GRAPHICS;
1020 if (format->pad != 0)
1022 switch (format->format.code) {
1023 case MEDIA_BUS_FMT_UYVY8_1X16:
1024 case MEDIA_BUS_FMT_YUYV8_1X16:
1025 case MEDIA_BUS_FMT_RGB888_1X24:
1031 adv7511_fill_format(state, &format->format);
1032 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1033 struct v4l2_mbus_framefmt *fmt;
1035 fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
1036 fmt->code = format->format.code;
1037 fmt->colorspace = format->format.colorspace;
1038 fmt->ycbcr_enc = format->format.ycbcr_enc;
1039 fmt->quantization = format->format.quantization;
1040 fmt->xfer_func = format->format.xfer_func;
1044 switch (format->format.code) {
1045 case MEDIA_BUS_FMT_UYVY8_1X16:
1046 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
1047 adv7511_wr_and_or(sd, 0x16, 0x03, 0xb8);
1048 y = HDMI_COLORSPACE_YUV422;
1050 case MEDIA_BUS_FMT_YUYV8_1X16:
1051 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
1052 adv7511_wr_and_or(sd, 0x16, 0x03, 0xbc);
1053 y = HDMI_COLORSPACE_YUV422;
1055 case MEDIA_BUS_FMT_RGB888_1X24:
1057 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x00);
1058 adv7511_wr_and_or(sd, 0x16, 0x03, 0x00);
1061 state->fmt_code = format->format.code;
1062 state->colorspace = format->format.colorspace;
1063 state->ycbcr_enc = format->format.ycbcr_enc;
1064 state->quantization = format->format.quantization;
1065 state->xfer_func = format->format.xfer_func;
1067 switch (format->format.colorspace) {
1068 case V4L2_COLORSPACE_ADOBERGB:
1069 c = HDMI_COLORIMETRY_EXTENDED;
1070 ec = y ? HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601 :
1071 HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB;
1073 case V4L2_COLORSPACE_SMPTE170M:
1074 c = y ? HDMI_COLORIMETRY_ITU_601 : HDMI_COLORIMETRY_NONE;
1075 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV601) {
1076 c = HDMI_COLORIMETRY_EXTENDED;
1077 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1080 case V4L2_COLORSPACE_REC709:
1081 c = y ? HDMI_COLORIMETRY_ITU_709 : HDMI_COLORIMETRY_NONE;
1082 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV709) {
1083 c = HDMI_COLORIMETRY_EXTENDED;
1084 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
1087 case V4L2_COLORSPACE_SRGB:
1088 c = y ? HDMI_COLORIMETRY_EXTENDED : HDMI_COLORIMETRY_NONE;
1089 ec = y ? HDMI_EXTENDED_COLORIMETRY_S_YCC_601 :
1090 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1092 case V4L2_COLORSPACE_BT2020:
1093 c = HDMI_COLORIMETRY_EXTENDED;
1094 if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_BT2020_CONST_LUM)
1095 ec = 5; /* Not yet available in hdmi.h */
1097 ec = 6; /* Not yet available in hdmi.h */
1104 * CEA-861-F says that for RGB formats the YCC range must match the
1105 * RGB range, although sources should ignore the YCC range.
1107 * The RGB quantization range shouldn't be non-zero if the EDID doesn't
1108 * have the Q bit set in the Video Capabilities Data Block, however this
1109 * isn't checked at the moment. The assumption is that the application
1110 * knows the EDID and can detect this.
1112 * The same is true for the YCC quantization range: non-standard YCC
1113 * quantization ranges should only be sent if the EDID has the YQ bit
1114 * set in the Video Capabilities Data Block.
1116 switch (format->format.quantization) {
1117 case V4L2_QUANTIZATION_FULL_RANGE:
1118 q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
1119 HDMI_QUANTIZATION_RANGE_FULL;
1120 yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_FULL;
1122 case V4L2_QUANTIZATION_LIM_RANGE:
1123 q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
1124 HDMI_QUANTIZATION_RANGE_LIMITED;
1125 yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
1129 adv7511_wr_and_or(sd, 0x4a, 0xbf, 0);
1130 adv7511_wr_and_or(sd, 0x55, 0x9f, y << 5);
1131 adv7511_wr_and_or(sd, 0x56, 0x3f, c << 6);
1132 adv7511_wr_and_or(sd, 0x57, 0x83, (ec << 4) | (q << 2) | (itc << 7));
1133 adv7511_wr_and_or(sd, 0x59, 0x0f, (yq << 6) | (cn << 4));
1134 adv7511_wr_and_or(sd, 0x4a, 0xff, 1);
1139 static const struct v4l2_subdev_pad_ops adv7511_pad_ops = {
1140 .get_edid = adv7511_get_edid,
1141 .enum_mbus_code = adv7511_enum_mbus_code,
1142 .get_fmt = adv7511_get_fmt,
1143 .set_fmt = adv7511_set_fmt,
1144 .enum_dv_timings = adv7511_enum_dv_timings,
1145 .dv_timings_cap = adv7511_dv_timings_cap,
1148 /* --------------------- SUBDEV OPS --------------------------------------- */
1150 static const struct v4l2_subdev_ops adv7511_ops = {
1151 .core = &adv7511_core_ops,
1152 .pad = &adv7511_pad_ops,
1153 .video = &adv7511_video_ops,
1154 .audio = &adv7511_audio_ops,
1157 /* ----------------------------------------------------------------------- */
1158 static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, int segment, u8 *buf)
1162 v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment);
1163 for (i = 0; i < 256; i += 16) {
1167 v4l2_dbg(lvl, debug, sd, "\n");
1168 for (j = i; j < i + 16; j++) {
1169 sprintf(bp, "0x%02x, ", buf[j]);
1173 v4l2_dbg(lvl, debug, sd, "%s\n", b);
1178 static void adv7511_notify_no_edid(struct v4l2_subdev *sd)
1180 struct adv7511_state *state = get_adv7511_state(sd);
1181 struct adv7511_edid_detect ed;
1183 /* We failed to read the EDID, so send an event for this. */
1185 ed.segment = adv7511_rd(sd, 0xc4);
1186 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
1187 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x0);
1190 static void adv7511_edid_handler(struct work_struct *work)
1192 struct delayed_work *dwork = to_delayed_work(work);
1193 struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler);
1194 struct v4l2_subdev *sd = &state->sd;
1196 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1198 if (adv7511_check_edid_status(sd)) {
1199 /* Return if we received the EDID. */
1203 if (adv7511_have_hotplug(sd)) {
1204 /* We must retry reading the EDID several times, it is possible
1205 * that initially the EDID couldn't be read due to i2c errors
1206 * (DVI connectors are particularly prone to this problem). */
1207 if (state->edid.read_retries) {
1208 state->edid.read_retries--;
1209 v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__);
1210 state->have_monitor = false;
1211 adv7511_s_power(sd, false);
1212 adv7511_s_power(sd, true);
1213 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1218 /* We failed to read the EDID, so send an event for this. */
1219 adv7511_notify_no_edid(sd);
1220 v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
1223 static void adv7511_audio_setup(struct v4l2_subdev *sd)
1225 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1227 adv7511_s_i2s_clock_freq(sd, 48000);
1228 adv7511_s_clock_freq(sd, 48000);
1229 adv7511_s_routing(sd, 0, 0, 0);
1232 /* Configure hdmi transmitter. */
1233 static void adv7511_setup(struct v4l2_subdev *sd)
1235 struct adv7511_state *state = get_adv7511_state(sd);
1236 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1238 /* Input format: RGB 4:4:4 */
1239 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x0);
1240 /* Output format: RGB 4:4:4 */
1241 adv7511_wr_and_or(sd, 0x16, 0x7f, 0x0);
1242 /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, Aspect ratio: 16:9 */
1243 adv7511_wr_and_or(sd, 0x17, 0xf9, 0x06);
1244 /* Disable pixel repetition */
1245 adv7511_wr_and_or(sd, 0x3b, 0x9f, 0x0);
1247 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
1248 /* Output format: RGB 4:4:4, Active Format Information is valid,
1250 adv7511_wr_and_or(sd, 0x55, 0x9c, 0x12);
1251 /* AVI Info frame packet enable, Audio Info frame disable */
1252 adv7511_wr_and_or(sd, 0x44, 0xe7, 0x10);
1253 /* Colorimetry, Active format aspect ratio: same as picure. */
1254 adv7511_wr(sd, 0x56, 0xa8);
1256 adv7511_wr_and_or(sd, 0xaf, 0xed, 0x0);
1258 /* Positive clk edge capture for input video clock */
1259 adv7511_wr_and_or(sd, 0xba, 0x1f, 0x60);
1261 adv7511_audio_setup(sd);
1263 v4l2_ctrl_handler_setup(&state->hdl);
1266 static void adv7511_notify_monitor_detect(struct v4l2_subdev *sd)
1268 struct adv7511_monitor_detect mdt;
1269 struct adv7511_state *state = get_adv7511_state(sd);
1271 mdt.present = state->have_monitor;
1272 v4l2_subdev_notify(sd, ADV7511_MONITOR_DETECT, (void *)&mdt);
1275 static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
1277 struct adv7511_state *state = get_adv7511_state(sd);
1278 /* read hotplug and rx-sense state */
1279 u8 status = adv7511_rd(sd, 0x42);
1281 v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n",
1284 status & MASK_ADV7511_HPD_DETECT ? ", hotplug" : "",
1285 status & MASK_ADV7511_MSEN_DETECT ? ", rx-sense" : "");
1287 /* update read only ctrls */
1288 v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0);
1289 v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0);
1291 if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_MSEN_DETECT) || state->edid.segments)) {
1292 v4l2_dbg(1, debug, sd, "%s: hotplug and (rx-sense or edid)\n", __func__);
1293 if (!state->have_monitor) {
1294 v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__);
1295 state->have_monitor = true;
1296 adv7511_set_isr(sd, true);
1297 if (!adv7511_s_power(sd, true)) {
1298 v4l2_dbg(1, debug, sd, "%s: monitor detected, powerup failed\n", __func__);
1302 adv7511_notify_monitor_detect(sd);
1303 state->edid.read_retries = EDID_MAX_RETRIES;
1304 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1306 } else if (status & MASK_ADV7511_HPD_DETECT) {
1307 v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__);
1308 state->edid.read_retries = EDID_MAX_RETRIES;
1309 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1310 } else if (!(status & MASK_ADV7511_HPD_DETECT)) {
1311 v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__);
1312 if (state->have_monitor) {
1313 v4l2_dbg(1, debug, sd, "%s: monitor not detected\n", __func__);
1314 state->have_monitor = false;
1315 adv7511_notify_monitor_detect(sd);
1317 adv7511_s_power(sd, false);
1318 memset(&state->edid, 0, sizeof(struct adv7511_state_edid));
1319 adv7511_notify_no_edid(sd);
1323 static bool edid_block_verify_crc(u8 *edid_block)
1328 for (i = 0; i < 128; i++)
1329 sum += edid_block[i];
1333 static bool edid_verify_crc(struct v4l2_subdev *sd, u32 segment)
1335 struct adv7511_state *state = get_adv7511_state(sd);
1336 u32 blocks = state->edid.blocks;
1337 u8 *data = state->edid.data;
1339 if (!edid_block_verify_crc(&data[segment * 256]))
1341 if ((segment + 1) * 2 <= blocks)
1342 return edid_block_verify_crc(&data[segment * 256 + 128]);
1346 static bool edid_verify_header(struct v4l2_subdev *sd, u32 segment)
1348 static const u8 hdmi_header[] = {
1349 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
1351 struct adv7511_state *state = get_adv7511_state(sd);
1352 u8 *data = state->edid.data;
1356 return !memcmp(data, hdmi_header, sizeof(hdmi_header));
1359 static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
1361 struct adv7511_state *state = get_adv7511_state(sd);
1362 u8 edidRdy = adv7511_rd(sd, 0xc5);
1364 v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n",
1365 __func__, EDID_MAX_RETRIES - state->edid.read_retries);
1367 if (state->edid.complete)
1370 if (edidRdy & MASK_ADV7511_EDID_RDY) {
1371 int segment = adv7511_rd(sd, 0xc4);
1372 struct adv7511_edid_detect ed;
1374 if (segment >= EDID_MAX_SEGM) {
1375 v4l2_err(sd, "edid segment number too big\n");
1378 v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment);
1379 adv7511_edid_rd(sd, 256, &state->edid.data[segment * 256]);
1380 adv7511_dbg_dump_edid(2, debug, sd, segment, &state->edid.data[segment * 256]);
1382 state->edid.blocks = state->edid.data[0x7e] + 1;
1383 v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", __func__, state->edid.blocks);
1385 if (!edid_verify_crc(sd, segment) ||
1386 !edid_verify_header(sd, segment)) {
1387 /* edid crc error, force reread of edid segment */
1388 v4l2_err(sd, "%s: edid crc or header error\n", __func__);
1389 state->have_monitor = false;
1390 adv7511_s_power(sd, false);
1391 adv7511_s_power(sd, true);
1394 /* one more segment read ok */
1395 state->edid.segments = segment + 1;
1396 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x1);
1397 if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) {
1398 /* Request next EDID segment */
1399 v4l2_dbg(1, debug, sd, "%s: request segment %d\n", __func__, state->edid.segments);
1400 adv7511_wr(sd, 0xc9, 0xf);
1401 adv7511_wr(sd, 0xc4, state->edid.segments);
1402 state->edid.read_retries = EDID_MAX_RETRIES;
1403 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1407 v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments);
1408 state->edid.complete = true;
1410 /* report when we have all segments
1411 but report only for segment 0
1415 state->edid_detect_counter++;
1416 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
1423 /* ----------------------------------------------------------------------- */
1425 static void adv7511_init_setup(struct v4l2_subdev *sd)
1427 struct adv7511_state *state = get_adv7511_state(sd);
1428 struct adv7511_state_edid *edid = &state->edid;
1430 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1432 /* clear all interrupts */
1433 adv7511_wr(sd, 0x96, 0xff);
1435 * Stop HPD from resetting a lot of registers.
1436 * It might leave the chip in a partly un-initialized state,
1437 * in particular with regards to hotplug bounces.
1439 adv7511_wr_and_or(sd, 0xd6, 0x3f, 0xc0);
1440 memset(edid, 0, sizeof(struct adv7511_state_edid));
1441 state->have_monitor = false;
1442 adv7511_set_isr(sd, false);
1443 adv7511_s_stream(sd, false);
1444 adv7511_s_audio_stream(sd, false);
1447 static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id)
1449 struct adv7511_state *state;
1450 struct adv7511_platform_data *pdata = client->dev.platform_data;
1451 struct v4l2_ctrl_handler *hdl;
1452 struct v4l2_subdev *sd;
1456 /* Check if the adapter supports the needed features */
1457 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1460 state = devm_kzalloc(&client->dev, sizeof(struct adv7511_state), GFP_KERNEL);
1466 v4l_err(client, "No platform data!\n");
1469 memcpy(&state->pdata, pdata, sizeof(state->pdata));
1470 state->fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
1471 state->colorspace = V4L2_COLORSPACE_SRGB;
1475 v4l2_dbg(1, debug, sd, "detecting adv7511 client on address 0x%x\n",
1478 v4l2_i2c_subdev_init(sd, client, &adv7511_ops);
1481 v4l2_ctrl_handler_init(hdl, 10);
1482 /* add in ascending ID order */
1483 state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1484 V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI,
1485 0, V4L2_DV_TX_MODE_DVI_D);
1486 state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1487 V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0);
1488 state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1489 V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0);
1490 state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1491 V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0);
1492 state->rgb_quantization_range_ctrl =
1493 v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1494 V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL,
1495 0, V4L2_DV_RGB_RANGE_AUTO);
1496 state->content_type_ctrl =
1497 v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1498 V4L2_CID_DV_TX_IT_CONTENT_TYPE, V4L2_DV_IT_CONTENT_TYPE_NO_ITC,
1499 0, V4L2_DV_IT_CONTENT_TYPE_NO_ITC);
1500 sd->ctrl_handler = hdl;
1505 state->pad.flags = MEDIA_PAD_FL_SINK;
1506 err = media_entity_pads_init(&sd->entity, 1, &state->pad);
1510 /* EDID and CEC i2c addr */
1511 state->i2c_edid_addr = state->pdata.i2c_edid << 1;
1512 state->i2c_cec_addr = state->pdata.i2c_cec << 1;
1513 state->i2c_pktmem_addr = state->pdata.i2c_pktmem << 1;
1515 state->chip_revision = adv7511_rd(sd, 0x0);
1516 chip_id[0] = adv7511_rd(sd, 0xf5);
1517 chip_id[1] = adv7511_rd(sd, 0xf6);
1518 if (chip_id[0] != 0x75 || chip_id[1] != 0x11) {
1519 v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]);
1524 state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1);
1525 if (state->i2c_edid == NULL) {
1526 v4l2_err(sd, "failed to register edid i2c client\n");
1531 state->i2c_pktmem = i2c_new_dummy(client->adapter, state->i2c_pktmem_addr >> 1);
1532 if (state->i2c_pktmem == NULL) {
1533 v4l2_err(sd, "failed to register pktmem i2c client\n");
1535 goto err_unreg_edid;
1538 adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
1539 state->work_queue = create_singlethread_workqueue(sd->name);
1540 if (state->work_queue == NULL) {
1541 v4l2_err(sd, "could not create workqueue\n");
1543 goto err_unreg_pktmem;
1546 INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler);
1548 adv7511_init_setup(sd);
1549 adv7511_set_isr(sd, true);
1550 adv7511_check_monitor_present_status(sd);
1552 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
1553 client->addr << 1, client->adapter->name);
1557 i2c_unregister_device(state->i2c_pktmem);
1559 i2c_unregister_device(state->i2c_edid);
1561 media_entity_cleanup(&sd->entity);
1563 v4l2_ctrl_handler_free(&state->hdl);
1567 /* ----------------------------------------------------------------------- */
1569 static int adv7511_remove(struct i2c_client *client)
1571 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1572 struct adv7511_state *state = get_adv7511_state(sd);
1574 state->chip_revision = -1;
1576 v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
1577 client->addr << 1, client->adapter->name);
1579 adv7511_init_setup(sd);
1580 cancel_delayed_work(&state->edid_handler);
1581 i2c_unregister_device(state->i2c_edid);
1582 i2c_unregister_device(state->i2c_pktmem);
1583 destroy_workqueue(state->work_queue);
1584 v4l2_device_unregister_subdev(sd);
1585 media_entity_cleanup(&sd->entity);
1586 v4l2_ctrl_handler_free(sd->ctrl_handler);
1590 /* ----------------------------------------------------------------------- */
1592 static struct i2c_device_id adv7511_id[] = {
1596 MODULE_DEVICE_TABLE(i2c, adv7511_id);
1598 static struct i2c_driver adv7511_driver = {
1602 .probe = adv7511_probe,
1603 .remove = adv7511_remove,
1604 .id_table = adv7511_id,
1607 module_i2c_driver(adv7511_driver);