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drm/bridge: sii902x: add check of embedded bus format

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In addition, add log to check the result of enabling
TPI mode and initializing sii902x.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Change-Id: Id09c7e40d7706bd3cfcbb34b775ad5450d703fec
This commit is contained in:
Damon Ding
2022-03-22 10:58:36 +08:00
committed by Tao Huang
parent 8e04534d8c
commit 935ab6f7c2
1 changed files with 22 additions and 2 deletions
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24
drivers/gpu/drm/bridge/sii902x.c
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@@ -426,12 +426,29 @@ static void sii902x_bridge_enable(struct drm_bridge *bridge)
mutex_unlock(&sii902x->mutex);
}
static bool sii902x_check_embedded_format(uint32_t bus_format)
{
switch (bus_format) {
case MEDIA_BUS_FMT_YUYV8_2X8:
case MEDIA_BUS_FMT_YVYU8_2X8:
case MEDIA_BUS_FMT_UYVY8_2X8:
case MEDIA_BUS_FMT_VYUY8_2X8:
case MEDIA_BUS_FMT_YUYV8_1X16:
case MEDIA_BUS_FMT_YVYU8_1X16:
case MEDIA_BUS_FMT_UYVY8_1X16:
case MEDIA_BUS_FMT_VYUY8_1X16:
return true;
default:
return false;
}
}
static void sii902x_set_embedded_sync(struct sii902x *sii902x)
{
unsigned char data[8];
struct videomode vm;
if (sii902x->bus_format == MEDIA_BUS_FMT_RGB888_1X24)
if (!sii902x_check_embedded_format(sii902x->bus_format))
return;
sii902x_update_bits_unlocked(sii902x->i2c, SII902X_TPI_SYNC_GEN_CTRL,
@@ -1139,8 +1156,10 @@ static int sii902x_init(struct sii902x *sii902x)
sii902x_reset(sii902x);
ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0);
if (ret)
if (ret) {
dev_err(dev, "enable TPI mode failed %d\n", ret);
return ret;
}
ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0),
&chipid, 4);
@@ -1273,6 +1292,7 @@ static int sii902x_probe(struct i2c_client *client,
ret = sii902x_init(sii902x);
if (ret < 0) {
dev_err(dev, "Failed to init sii902x %d\n", ret);
regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies),
sii902x->supplies);
}