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| author |   Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2021-03-19 17:57:59 +0100 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-03-22 13:05:55 +0100 |
| commit | 54b74981c86c2af49d39cafaec414c86a49e4164 (patch) | |
| tree | a270c8bd79e2dd138271a792eee7013b5b0e8267 /drivers/media | |
| parent | media: buffer.rst: fix incorrect :c:type (diff) | |
| download | linux-dev-54b74981c86c2af49d39cafaec414c86a49e4164.tar.xz linux-dev-54b74981c86c2af49d39cafaec414c86a49e4164.zip | |
media: adv7604: writing a one-block EDID failed
The adv7604 refused to accept an one-block EDID, it required two blocks.
Fix this.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/adv7604.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index 09004d928d11..18184297e2f0 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -2298,7 +2298,7 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) struct adv76xx_state *state = to_state(sd); const struct adv76xx_chip_info *info = state->info; unsigned int spa_loc; - u16 pa; + u16 pa, parent_pa; int err; int i; @@ -2332,7 +2332,7 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) return -E2BIG; } pa = v4l2_get_edid_phys_addr(edid->edid, edid->blocks * 128, &spa_loc); - err = v4l2_phys_addr_validate(pa, &pa, NULL); + err = v4l2_phys_addr_validate(pa, &parent_pa, NULL); if (err) return err; @@ -2348,25 +2348,25 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) * Return an error if no location of the source physical address * was found. */ - if (spa_loc == 0) + if (edid->blocks > 1 && spa_loc == 0) return -EINVAL; switch (edid->pad) { case ADV76XX_PAD_HDMI_PORT_A: - state->spa_port_a[0] = edid->edid[spa_loc]; - state->spa_port_a[1] = edid->edid[spa_loc + 1]; + state->spa_port_a[0] = pa >> 8; + state->spa_port_a[1] = pa & 0xff; break; case ADV7604_PAD_HDMI_PORT_B: - rep_write(sd, 0x70, edid->edid[spa_loc]); - rep_write(sd, 0x71, edid->edid[spa_loc + 1]); + rep_write(sd, 0x70, pa >> 8); + rep_write(sd, 0x71, pa & 0xff); break; case ADV7604_PAD_HDMI_PORT_C: - rep_write(sd, 0x72, edid->edid[spa_loc]); - rep_write(sd, 0x73, edid->edid[spa_loc + 1]); + rep_write(sd, 0x72, pa >> 8); + rep_write(sd, 0x73, pa & 0xff); break; case ADV7604_PAD_HDMI_PORT_D: - rep_write(sd, 0x74, edid->edid[spa_loc]); - rep_write(sd, 0x75, edid->edid[spa_loc + 1]); + rep_write(sd, 0x74, pa >> 8); + rep_write(sd, 0x75, pa & 0xff); break; default: return -EINVAL; @@ -2381,8 +2381,10 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) rep_write_clr_set(sd, 0x71, 0x01, (spa_loc & 0x100) >> 8); } - edid->edid[spa_loc] = state->spa_port_a[0]; - edid->edid[spa_loc + 1] = state->spa_port_a[1]; + if (spa_loc) { + edid->edid[spa_loc] = state->spa_port_a[0]; + edid->edid[spa_loc + 1] = state->spa_port_a[1]; + } memcpy(state->edid.edid, edid->edid, 128 * edid->blocks); state->edid.blocks = edid->blocks; @@ -2409,7 +2411,7 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) v4l2_err(sd, "error enabling edid (0x%x)\n", state->edid.present); return -EIO; } - cec_s_phys_addr(state->cec_adap, pa, false); + cec_s_phys_addr(state->cec_adap, parent_pa, false); /* enable hotplug after 100 ms */ schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 10); |