UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

media: adv7604: fix HPD support for adv7611/12 

For the adv7604 the hotplug detect pin is controlled through gpio pins from
the SoC, but the adv7611 and adv7612 control the hotplug detect pin
themselves.

But the driver had no support for this, so the HPD was always high, even
when changing the EDID. Add proper support for this to the driver.

Tested with an adv7612.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2021-03-24 08:56:42 +01:00 committed by Mauro Carvalho Chehab
parent 54676d5f56
commit 1cf233d89f
1 changed files with 21 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/media/i2c/adv7604.c
View File

@ -512,10 +512,17 @@ static inline int edid_write_block(struct v4l2_subdev *sd,
static void adv76xx_set_hpd(struct adv76xx_state *state, unsigned int hpd)
{
const struct adv76xx_chip_info *info = state->info;
unsigned int i;
for (i = 0; i < state->info->num_dv_ports; ++i)
gpiod_set_value_cansleep(state->hpd_gpio[i], hpd & BIT(i));
if (info->type == ADV7604) {
for (i = 0; i < state->info->num_dv_ports; ++i)
gpiod_set_value_cansleep(state->hpd_gpio[i], hpd & BIT(i));
} else {
for (i = 0; i < state->info->num_dv_ports; ++i)
io_write_clr_set(&state->sd, 0x20, 0x80 >> i,
(!!(hpd & BIT(i))) << (7 - i));
}
v4l2_subdev_notify(&state->sd, ADV76XX_HOTPLUG, &hpd);
}
@ -2805,6 +2812,18 @@ static int adv76xx_core_init(struct v4l2_subdev *sd)
io_write(sd, 0x0b, 0x44); /* Power down ESDP block */
cp_write(sd, 0xcf, 0x01); /* Power down macrovision */
/* HPD */
if (info->type != ADV7604) {
/* Set manual HPD values to 0 */
io_write_clr_set(sd, 0x20, 0xc0, 0);
/*
* Set HPA_DELAY to 200 ms and set automatic HPD control
* to: internal EDID is active AND a cable is detected
* AND the manual HPD control is set to 1.
*/
hdmi_write_clr_set(sd, 0x6c, 0xf6, 0x26);
}
/* video format */
io_write_clr_set(sd, 0x02, 0x0f, pdata->alt_gamma << 3);
io_write_clr_set(sd, 0x05, 0x0e, pdata->blank_data << 3 |