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drm/bridge: anx7625: Set downstream sink into normal status

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As downstream sink was set into standby mode while bridge disabled,
this patch used for setting downstream sink into normal status
while enable bridge.

Signed-off-by: Xin Ji <xji@analogixsemi.com>
Reviewed-by: Pin-Yen Lin <treapking@chromium.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220322080213.1487134-1-xji@analogixsemi.com
This commit is contained in:
Xin Ji 2022-03-22 16:02:12 +08:00 • committed by Robert Foss
parent 3ccd59f930
commit 27f26359de
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GPG key ID: 3EFD900F76D1D784
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/bridge/analogix/anx7625.c
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@ -924,12 +924,20 @@ static void anx7625_dp_start(struct anx7625_data *ctx)
{ {
int ret; int ret;
struct device *dev = &ctx->client->dev; struct device *dev = &ctx->client->dev;
u8 data;
if (!ctx->display_timing_valid) { if (!ctx->display_timing_valid) {
DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n"); DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n");
return; return;
} }
dev_dbg(dev, "set downstream sink into normal\n");
/* Downstream sink enter into normal mode */
data = 1;
ret = anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, 0x000600, 1, &data);
if (ret < 0)
dev_err(dev, "IO error : set sink into normal mode fail\n");
/* Disable HDCP */ /* Disable HDCP */
anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);