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linux/drivers/media/i2c/adv748x/adv748x-hdmi.c
Jacopo Mondi a33df6ac31 media: adv748x: Store the TX sink in HDMI/AFE 
Both the AFE and HDMI s_stream routines (adv748x_afe_s_stream() and
adv748x_hdmi_s_stream()) have to enable the CSI-2 TX they are streaming video
data to.

With the introduction of dynamic routing between HDMI and AFE entities to
TXA, the video stream sink needs to be set at run time, and not statically
selected as the s_stream functions are currently doing.

To fix this, store a reference to the active CSI-2 TX sink for both HDMI and
AFE sources, and operate on it when starting/stopping the stream.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-02-18 11:03:52 -05:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for Analog Devices ADV748X HDMI receiver and Component Processor (CP)
*
* Copyright (C) 2017 Renesas Electronics Corp.
*/
#include <linux/module.h>
#include <linux/mutex.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-ioctl.h>
#include <uapi/linux/v4l2-dv-timings.h>
#include "adv748x.h"
/* -----------------------------------------------------------------------------
* HDMI and CP
*/
#define ADV748X_HDMI_MIN_WIDTH 640
#define ADV748X_HDMI_MAX_WIDTH 1920
#define ADV748X_HDMI_MIN_HEIGHT 480
#define ADV748X_HDMI_MAX_HEIGHT 1200
/* V4L2_DV_BT_CEA_720X480I59_94 - 0.5 MHz */
#define ADV748X_HDMI_MIN_PIXELCLOCK 13000000
/* V4L2_DV_BT_DMT_1600X1200P60 */
#define ADV748X_HDMI_MAX_PIXELCLOCK 162000000
static const struct v4l2_dv_timings_cap adv748x_hdmi_timings_cap = {
.type = V4L2_DV_BT_656_1120,
/* keep this initialization for compatibility with GCC < 4.4.6 */
.reserved = { 0 },
V4L2_INIT_BT_TIMINGS(ADV748X_HDMI_MIN_WIDTH, ADV748X_HDMI_MAX_WIDTH,
ADV748X_HDMI_MIN_HEIGHT, ADV748X_HDMI_MAX_HEIGHT,
ADV748X_HDMI_MIN_PIXELCLOCK,
ADV748X_HDMI_MAX_PIXELCLOCK,
V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
V4L2_DV_BT_CAP_PROGRESSIVE)
};
struct adv748x_hdmi_video_standards {
struct v4l2_dv_timings timings;
u8 vid_std;
u8 v_freq;
};
static const struct adv748x_hdmi_video_standards
adv748x_hdmi_video_standards[] = {
{ V4L2_DV_BT_CEA_720X480P59_94, 0x4a, 0x00 },
{ V4L2_DV_BT_CEA_720X576P50, 0x4b, 0x00 },
{ V4L2_DV_BT_CEA_1280X720P60, 0x53, 0x00 },
{ V4L2_DV_BT_CEA_1280X720P50, 0x53, 0x01 },
{ V4L2_DV_BT_CEA_1280X720P30, 0x53, 0x02 },
{ V4L2_DV_BT_CEA_1280X720P25, 0x53, 0x03 },
{ V4L2_DV_BT_CEA_1280X720P24, 0x53, 0x04 },
{ V4L2_DV_BT_CEA_1920X1080P60, 0x5e, 0x00 },
{ V4L2_DV_BT_CEA_1920X1080P50, 0x5e, 0x01 },
{ V4L2_DV_BT_CEA_1920X1080P30, 0x5e, 0x02 },
{ V4L2_DV_BT_CEA_1920X1080P25, 0x5e, 0x03 },
{ V4L2_DV_BT_CEA_1920X1080P24, 0x5e, 0x04 },
/* SVGA */
{ V4L2_DV_BT_DMT_800X600P56, 0x80, 0x00 },
{ V4L2_DV_BT_DMT_800X600P60, 0x81, 0x00 },
{ V4L2_DV_BT_DMT_800X600P72, 0x82, 0x00 },
{ V4L2_DV_BT_DMT_800X600P75, 0x83, 0x00 },
{ V4L2_DV_BT_DMT_800X600P85, 0x84, 0x00 },
/* SXGA */
{ V4L2_DV_BT_DMT_1280X1024P60, 0x85, 0x00 },
{ V4L2_DV_BT_DMT_1280X1024P75, 0x86, 0x00 },
/* VGA */
{ V4L2_DV_BT_DMT_640X480P60, 0x88, 0x00 },
{ V4L2_DV_BT_DMT_640X480P72, 0x89, 0x00 },
{ V4L2_DV_BT_DMT_640X480P75, 0x8a, 0x00 },
{ V4L2_DV_BT_DMT_640X480P85, 0x8b, 0x00 },
/* XGA */
{ V4L2_DV_BT_DMT_1024X768P60, 0x8c, 0x00 },
{ V4L2_DV_BT_DMT_1024X768P70, 0x8d, 0x00 },
{ V4L2_DV_BT_DMT_1024X768P75, 0x8e, 0x00 },
{ V4L2_DV_BT_DMT_1024X768P85, 0x8f, 0x00 },
/* UXGA */
{ V4L2_DV_BT_DMT_1600X1200P60, 0x96, 0x00 },
};
static void adv748x_hdmi_fill_format(struct adv748x_hdmi *hdmi,
struct v4l2_mbus_framefmt *fmt)
{
memset(fmt, 0, sizeof(*fmt));
fmt->code = MEDIA_BUS_FMT_RGB888_1X24;
fmt->field = hdmi->timings.bt.interlaced ?
V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE;
/* TODO: The colorspace depends on the AVI InfoFrame contents */
fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->width = hdmi->timings.bt.width;
fmt->height = hdmi->timings.bt.height;
if (fmt->field == V4L2_FIELD_ALTERNATE)
fmt->height /= 2;
}
static void adv748x_fill_optional_dv_timings(struct v4l2_dv_timings *timings)
{
v4l2_find_dv_timings_cap(timings, &adv748x_hdmi_timings_cap,
250000, NULL, NULL);
}
static bool adv748x_hdmi_has_signal(struct adv748x_state *state)
{
int val;
/* Check that VERT_FILTER and DE_REGEN is locked */
val = hdmi_read(state, ADV748X_HDMI_LW1);
return (val & ADV748X_HDMI_LW1_VERT_FILTER) &&
(val & ADV748X_HDMI_LW1_DE_REGEN);
}
static int adv748x_hdmi_read_pixelclock(struct adv748x_state *state)
{
int a, b;
a = hdmi_read(state, ADV748X_HDMI_TMDS_1);
b = hdmi_read(state, ADV748X_HDMI_TMDS_2);
if (a < 0 || b < 0)
return -ENODATA;
/*
* The high 9 bits store TMDS frequency measurement in MHz
* The low 7 bits of TMDS_2 store the 7-bit TMDS fractional frequency
* measurement in 1/128 MHz
*/
return ((a << 1) | (b >> 7)) * 1000000 + (b & 0x7f) * 1000000 / 128;
}
/*
* adv748x_hdmi_set_de_timings: Adjust horizontal picture offset through DE
*
* HDMI CP uses a Data Enable synchronisation timing reference
*
* Vary the leading and trailing edge position of the DE signal output by the CP
* core. Values are stored as signed-twos-complement in one-pixel-clock units
*
* The start and end are shifted equally by the 10-bit shift value.
*/
static void adv748x_hdmi_set_de_timings(struct adv748x_state *state, int shift)
{
u8 high, low;
/* POS_HIGH stores bits 8 and 9 of both the start and end */
high = ADV748X_CP_DE_POS_HIGH_SET;
high |= (shift & 0x300) >> 8;
low = shift & 0xff;
/* The sequence of the writes is important and must be followed */
cp_write(state, ADV748X_CP_DE_POS_HIGH, high);
cp_write(state, ADV748X_CP_DE_POS_END_LOW, low);
high |= (shift & 0x300) >> 6;
cp_write(state, ADV748X_CP_DE_POS_HIGH, high);
cp_write(state, ADV748X_CP_DE_POS_START_LOW, low);
}
static int adv748x_hdmi_set_video_timings(struct adv748x_state *state,
const struct v4l2_dv_timings *timings)
{
const struct adv748x_hdmi_video_standards *stds =
adv748x_hdmi_video_standards;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(adv748x_hdmi_video_standards); i++) {
if (!v4l2_match_dv_timings(timings, &stds[i].timings, 250000,
false))
continue;
}
if (i >= ARRAY_SIZE(adv748x_hdmi_video_standards))
return -EINVAL;
/*
* When setting cp_vid_std to either 720p, 1080i, or 1080p, the video
* will get shifted horizontally to the left in active video mode.
* The de_h_start and de_h_end controls are used to centre the picture
* correctly
*/
switch (stds[i].vid_std) {
case 0x53: /* 720p */
adv748x_hdmi_set_de_timings(state, -40);
break;
case 0x54: /* 1080i */
case 0x5e: /* 1080p */
adv748x_hdmi_set_de_timings(state, -44);
break;
default:
adv748x_hdmi_set_de_timings(state, 0);
break;
}
io_write(state, ADV748X_IO_VID_STD, stds[i].vid_std);
io_clrset(state, ADV748X_IO_DATAPATH, ADV748X_IO_DATAPATH_VFREQ_M,
stds[i].v_freq << ADV748X_IO_DATAPATH_VFREQ_SHIFT);
return 0;
}
/* -----------------------------------------------------------------------------
* v4l2_subdev_video_ops
*/
static int adv748x_hdmi_s_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
int ret;
if (!timings)
return -EINVAL;
if (v4l2_match_dv_timings(&hdmi->timings, timings, 0, false))
return 0;
if (!v4l2_valid_dv_timings(timings, &adv748x_hdmi_timings_cap,
NULL, NULL))
return -ERANGE;
adv748x_fill_optional_dv_timings(timings);
mutex_lock(&state->mutex);
ret = adv748x_hdmi_set_video_timings(state, timings);
if (ret)
goto error;
hdmi->timings = *timings;
cp_clrset(state, ADV748X_CP_VID_ADJ_2, ADV748X_CP_VID_ADJ_2_INTERLACED,
timings->bt.interlaced ?
ADV748X_CP_VID_ADJ_2_INTERLACED : 0);
mutex_unlock(&state->mutex);
return 0;
error:
mutex_unlock(&state->mutex);
return ret;
}
static int adv748x_hdmi_g_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
mutex_lock(&state->mutex);
*timings = hdmi->timings;
mutex_unlock(&state->mutex);
return 0;
}
static int adv748x_hdmi_query_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
struct v4l2_bt_timings *bt = &timings->bt;
int pixelclock;
int polarity;
if (!timings)
return -EINVAL;
memset(timings, 0, sizeof(struct v4l2_dv_timings));
if (!adv748x_hdmi_has_signal(state))
return -ENOLINK;
pixelclock = adv748x_hdmi_read_pixelclock(state);
if (pixelclock < 0)
return -ENODATA;
timings->type = V4L2_DV_BT_656_1120;
bt->pixelclock = pixelclock;
bt->interlaced = hdmi_read(state, ADV748X_HDMI_F1H1) &
ADV748X_HDMI_F1H1_INTERLACED ?
V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
bt->width = hdmi_read16(state, ADV748X_HDMI_LW1,
ADV748X_HDMI_LW1_WIDTH_MASK);
bt->height = hdmi_read16(state, ADV748X_HDMI_F0H1,
ADV748X_HDMI_F0H1_HEIGHT_MASK);
bt->hfrontporch = hdmi_read16(state, ADV748X_HDMI_HFRONT_PORCH,
ADV748X_HDMI_HFRONT_PORCH_MASK);
bt->hsync = hdmi_read16(state, ADV748X_HDMI_HSYNC_WIDTH,
ADV748X_HDMI_HSYNC_WIDTH_MASK);
bt->hbackporch = hdmi_read16(state, ADV748X_HDMI_HBACK_PORCH,
ADV748X_HDMI_HBACK_PORCH_MASK);
bt->vfrontporch = hdmi_read16(state, ADV748X_HDMI_VFRONT_PORCH,
ADV748X_HDMI_VFRONT_PORCH_MASK) / 2;
bt->vsync = hdmi_read16(state, ADV748X_HDMI_VSYNC_WIDTH,
ADV748X_HDMI_VSYNC_WIDTH_MASK) / 2;
bt->vbackporch = hdmi_read16(state, ADV748X_HDMI_VBACK_PORCH,
ADV748X_HDMI_VBACK_PORCH_MASK) / 2;
polarity = hdmi_read(state, 0x05);
bt->polarities = (polarity & BIT(4) ? V4L2_DV_VSYNC_POS_POL : 0) |
(polarity & BIT(5) ? V4L2_DV_HSYNC_POS_POL : 0);
if (bt->interlaced == V4L2_DV_INTERLACED) {
bt->height += hdmi_read16(state, 0x0b, 0x1fff);
bt->il_vfrontporch = hdmi_read16(state, 0x2c, 0x3fff) / 2;
bt->il_vsync = hdmi_read16(state, 0x30, 0x3fff) / 2;
bt->il_vbackporch = hdmi_read16(state, 0x34, 0x3fff) / 2;
}
adv748x_fill_optional_dv_timings(timings);
/*
* No interrupt handling is implemented yet.
* There should be an IRQ when a cable is plugged and the new timings
* should be figured out and stored to state.
*/
hdmi->timings = *timings;
return 0;
}
static int adv748x_hdmi_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
mutex_lock(&state->mutex);
*status = adv748x_hdmi_has_signal(state) ? 0 : V4L2_IN_ST_NO_SIGNAL;
mutex_unlock(&state->mutex);
return 0;
}
static int adv748x_hdmi_s_stream(struct v4l2_subdev *sd, int enable)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
int ret;
mutex_lock(&state->mutex);
ret = adv748x_tx_power(hdmi->tx, enable);
if (ret)
goto done;
if (adv748x_hdmi_has_signal(state))
adv_dbg(state, "Detected HDMI signal\n");
else
adv_dbg(state, "Couldn't detect HDMI video signal\n");
done:
mutex_unlock(&state->mutex);
return ret;
}
static int adv748x_hdmi_g_pixelaspect(struct v4l2_subdev *sd,
struct v4l2_fract *aspect)
{
aspect->numerator = 1;
aspect->denominator = 1;
return 0;
}
static const struct v4l2_subdev_video_ops adv748x_video_ops_hdmi = {
.s_dv_timings = adv748x_hdmi_s_dv_timings,
.g_dv_timings = adv748x_hdmi_g_dv_timings,
.query_dv_timings = adv748x_hdmi_query_dv_timings,
.g_input_status = adv748x_hdmi_g_input_status,
.s_stream = adv748x_hdmi_s_stream,
.g_pixelaspect = adv748x_hdmi_g_pixelaspect,
};
/* -----------------------------------------------------------------------------
* v4l2_subdev_pad_ops
*/
static int adv748x_hdmi_propagate_pixelrate(struct adv748x_hdmi *hdmi)
{
struct v4l2_subdev *tx;
struct v4l2_dv_timings timings;
tx = adv748x_get_remote_sd(&hdmi->pads[ADV748X_HDMI_SOURCE]);
if (!tx)
return -ENOLINK;
adv748x_hdmi_query_dv_timings(&hdmi->sd, &timings);
return adv748x_csi2_set_pixelrate(tx, timings.bt.pixelclock);
}
static int adv748x_hdmi_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_RGB888_1X24;
return 0;
}
static int adv748x_hdmi_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct v4l2_mbus_framefmt *mbusformat;
if (sdformat->pad != ADV748X_HDMI_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
sdformat->format = *mbusformat;
} else {
adv748x_hdmi_fill_format(hdmi, &sdformat->format);
adv748x_hdmi_propagate_pixelrate(hdmi);
}
return 0;
}
static int adv748x_hdmi_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct v4l2_mbus_framefmt *mbusformat;
if (sdformat->pad != ADV748X_HDMI_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
return adv748x_hdmi_get_format(sd, cfg, sdformat);
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
*mbusformat = sdformat->format;
return 0;
}
static int adv748x_hdmi_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
memset(edid->reserved, 0, sizeof(edid->reserved));
if (!hdmi->edid.present)
return -ENODATA;
if (edid->start_block == 0 && edid->blocks == 0) {
edid->blocks = hdmi->edid.blocks;
return 0;
}
if (edid->start_block >= hdmi->edid.blocks)
return -EINVAL;
if (edid->start_block + edid->blocks > hdmi->edid.blocks)
edid->blocks = hdmi->edid.blocks - edid->start_block;
memcpy(edid->edid, hdmi->edid.edid + edid->start_block * 128,
edid->blocks * 128);
return 0;
}
static inline int adv748x_hdmi_edid_write_block(struct adv748x_hdmi *hdmi,
unsigned int total_len, const u8 *val)
{
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
int err = 0;
int i = 0;
int len = 0;
adv_dbg(state, "%s: write EDID block (%d byte)\n",
__func__, total_len);
while (!err && i < total_len) {
len = (total_len - i) > I2C_SMBUS_BLOCK_MAX ?
I2C_SMBUS_BLOCK_MAX :
(total_len - i);
err = adv748x_write_block(state, ADV748X_PAGE_EDID,
i, val + i, len);
i += len;
}
return err;
}
static int adv748x_hdmi_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
{
struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
int err;
memset(edid->reserved, 0, sizeof(edid->reserved));
if (edid->start_block != 0)
return -EINVAL;
if (edid->blocks == 0) {
hdmi->edid.blocks = 0;
hdmi->edid.present = 0;
/* Fall back to a 16:9 aspect ratio */
hdmi->aspect_ratio.numerator = 16;
hdmi->aspect_ratio.denominator = 9;
/* Disable the EDID */
repeater_write(state, ADV748X_REPEATER_EDID_SZ,
edid->blocks << ADV748X_REPEATER_EDID_SZ_SHIFT);
repeater_write(state, ADV748X_REPEATER_EDID_CTL, 0);
return 0;
}
if (edid->blocks > 4) {
edid->blocks = 4;
return -E2BIG;
}
memcpy(hdmi->edid.edid, edid->edid, 128 * edid->blocks);
hdmi->edid.blocks = edid->blocks;
hdmi->edid.present = true;
hdmi->aspect_ratio = v4l2_calc_aspect_ratio(edid->edid[0x15],
edid->edid[0x16]);
err = adv748x_hdmi_edid_write_block(hdmi, 128 * edid->blocks,
hdmi->edid.edid);
if (err < 0) {
v4l2_err(sd, "error %d writing edid pad %d\n", err, edid->pad);
return err;
}
repeater_write(state, ADV748X_REPEATER_EDID_SZ,
edid->blocks << ADV748X_REPEATER_EDID_SZ_SHIFT);
repeater_write(state, ADV748X_REPEATER_EDID_CTL,
ADV748X_REPEATER_EDID_CTL_EN);
return 0;
}
static bool adv748x_hdmi_check_dv_timings(const struct v4l2_dv_timings *timings,
void *hdl)
{
const struct adv748x_hdmi_video_standards *stds =
adv748x_hdmi_video_standards;
unsigned int i;
for (i = 0; stds[i].timings.bt.width; i++)
if (v4l2_match_dv_timings(timings, &stds[i].timings, 0, false))
return true;
return false;
}
static int adv748x_hdmi_enum_dv_timings(struct v4l2_subdev *sd,
struct v4l2_enum_dv_timings *timings)
{
return v4l2_enum_dv_timings_cap(timings, &adv748x_hdmi_timings_cap,
adv748x_hdmi_check_dv_timings, NULL);
}
static int adv748x_hdmi_dv_timings_cap(struct v4l2_subdev *sd,
struct v4l2_dv_timings_cap *cap)
{
*cap = adv748x_hdmi_timings_cap;
return 0;
}
static const struct v4l2_subdev_pad_ops adv748x_pad_ops_hdmi = {
.enum_mbus_code = adv748x_hdmi_enum_mbus_code,
.set_fmt = adv748x_hdmi_set_format,
.get_fmt = adv748x_hdmi_get_format,
.get_edid = adv748x_hdmi_get_edid,
.set_edid = adv748x_hdmi_set_edid,
.dv_timings_cap = adv748x_hdmi_dv_timings_cap,
.enum_dv_timings = adv748x_hdmi_enum_dv_timings,
};
/* -----------------------------------------------------------------------------
* v4l2_subdev_ops
*/
static const struct v4l2_subdev_ops adv748x_ops_hdmi = {
.video = &adv748x_video_ops_hdmi,
.pad = &adv748x_pad_ops_hdmi,
};
/* -----------------------------------------------------------------------------
* Controls
*/
static const char * const hdmi_ctrl_patgen_menu[] = {
"Disabled",
"Solid Color",
"Color Bars",
"Ramp Grey",
"Ramp Blue",
"Ramp Red",
"Checkered"
};
static int adv748x_hdmi_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct adv748x_hdmi *hdmi = adv748x_ctrl_to_hdmi(ctrl);
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
int ret;
u8 pattern;
/* Enable video adjustment first */
ret = cp_clrset(state, ADV748X_CP_VID_ADJ,
ADV748X_CP_VID_ADJ_ENABLE,
ADV748X_CP_VID_ADJ_ENABLE);
if (ret < 0)
return ret;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = cp_write(state, ADV748X_CP_BRI, ctrl->val);
break;
case V4L2_CID_HUE:
ret = cp_write(state, ADV748X_CP_HUE, ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = cp_write(state, ADV748X_CP_CON, ctrl->val);
break;
case V4L2_CID_SATURATION:
ret = cp_write(state, ADV748X_CP_SAT, ctrl->val);
break;
case V4L2_CID_TEST_PATTERN:
pattern = ctrl->val;
/* Pattern is 0-indexed. Ctrl Menu is 1-indexed */
if (pattern) {
pattern--;
pattern |= ADV748X_CP_PAT_GEN_EN;
}
ret = cp_write(state, ADV748X_CP_PAT_GEN, pattern);
break;
default:
return -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops adv748x_hdmi_ctrl_ops = {
.s_ctrl = adv748x_hdmi_s_ctrl,
};
static int adv748x_hdmi_init_controls(struct adv748x_hdmi *hdmi)
{
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
v4l2_ctrl_handler_init(&hdmi->ctrl_hdl, 5);
/* Use our mutex for the controls */
hdmi->ctrl_hdl.lock = &state->mutex;
v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops,
V4L2_CID_BRIGHTNESS, ADV748X_CP_BRI_MIN,
ADV748X_CP_BRI_MAX, 1, ADV748X_CP_BRI_DEF);
v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops,
V4L2_CID_CONTRAST, ADV748X_CP_CON_MIN,
ADV748X_CP_CON_MAX, 1, ADV748X_CP_CON_DEF);
v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops,
V4L2_CID_SATURATION, ADV748X_CP_SAT_MIN,
ADV748X_CP_SAT_MAX, 1, ADV748X_CP_SAT_DEF);
v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops,
V4L2_CID_HUE, ADV748X_CP_HUE_MIN,
ADV748X_CP_HUE_MAX, 1, ADV748X_CP_HUE_DEF);
/*
* Todo: V4L2_CID_DV_RX_POWER_PRESENT should also be supported when
* interrupts are handled correctly
*/
v4l2_ctrl_new_std_menu_items(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(hdmi_ctrl_patgen_menu) - 1,
0, 0, hdmi_ctrl_patgen_menu);
hdmi->sd.ctrl_handler = &hdmi->ctrl_hdl;
if (hdmi->ctrl_hdl.error) {
v4l2_ctrl_handler_free(&hdmi->ctrl_hdl);
return hdmi->ctrl_hdl.error;
}
return v4l2_ctrl_handler_setup(&hdmi->ctrl_hdl);
}
int adv748x_hdmi_init(struct adv748x_hdmi *hdmi)
{
struct adv748x_state *state = adv748x_hdmi_to_state(hdmi);
static const struct v4l2_dv_timings cea1280x720 =
V4L2_DV_BT_CEA_1280X720P30;
int ret;
hdmi->timings = cea1280x720;
/* Initialise a default 16:9 aspect ratio */
hdmi->aspect_ratio.numerator = 16;
hdmi->aspect_ratio.denominator = 9;
adv748x_subdev_init(&hdmi->sd, state, &adv748x_ops_hdmi,
MEDIA_ENT_F_IO_DTV, "hdmi");
hdmi->pads[ADV748X_HDMI_SINK].flags = MEDIA_PAD_FL_SINK;
hdmi->pads[ADV748X_HDMI_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&hdmi->sd.entity,
ADV748X_HDMI_NR_PADS, hdmi->pads);
if (ret)
return ret;
ret = adv748x_hdmi_init_controls(hdmi);
if (ret)
goto err_free_media;
return 0;
err_free_media:
media_entity_cleanup(&hdmi->sd.entity);
return ret;
}
void adv748x_hdmi_cleanup(struct adv748x_hdmi *hdmi)
{
v4l2_device_unregister_subdev(&hdmi->sd);
media_entity_cleanup(&hdmi->sd.entity);
v4l2_ctrl_handler_free(&hdmi->ctrl_hdl);
}
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