Re: [PATCH v2] drm/bridge: anx7625: Set downstream sink into normal status

On Tue, Mar 22, 2022 at 4:02 PM Xin Ji xji@analogixsemi.com wrote:

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

---

V1 -> V2: use dev_dbg replace of dev_info

drivers/gpu/drm/bridge/analogix/anx7625.c | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 9a2a19ad4202..dcf3275a00fe 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -924,12 +924,20 @@ static void anx7625_dp_start(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev;

•   u8 data;
  
    if (!ctx->display_timing_valid) {
            DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n");
            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");
  

The driver uses DRM_DEV_* for logs. Can we use this?

    /* Disable HDCP */
    anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);

-- 2.25.1