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authorHans Verkuil <hverkuil-cisco@xs4all.nl>2021-03-24 08:56:42 +0100
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-04-06 19:33:23 +0200
commit1cf233d89fcd0171d078d2479c0e73013c15c859 (patch)
tree1631d5567c31253a0ab37f5d3127d8c627a6615a
parent54676d5f5630b79f7b00c7c43882a58c1815aaf9 (diff)
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>
-rw-r--r--drivers/media/i2c/adv7604.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 18184297e2f0..68b2b7a10d5a 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -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 |

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