Am Mittwoch, 28. Oktober 2015, 16:56:01 schrieb Yakir Yang:
> There are some IP limit on rk3288 that only support 4 physical lanes
> of 2.7/1.6 Gbps/lane, so seprate them out by device_type flag.
>
> Tested-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx>
> ---
[...]
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index
> 6307060..563ffb1d 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -890,8 +890,8 @@ static void analogix_dp_commit(struct analogix_dp_device
> *dp) return;
> }
>
> - ret = analogix_dp_set_link_train(dp, dp->video_info.lane_count,
> - dp->video_info.link_rate);
> + ret = analogix_dp_set_link_train(dp, dp->video_info.max_lane_count,
> + dp->video_info.max_link_rate);
> if (ret) {
> dev_err(dp->dev, "unable to do link train\n");
> return;
> @@ -1156,16 +1156,25 @@ static int analogix_dp_dt_parse_pdata(struct
> analogix_dp_device *dp) struct device_node *dp_node = dp->dev->of_node;
> struct video_info *video_info = &dp->video_info;
>
> - if (of_property_read_u32(dp_node, "samsung,link-rate",
> - &video_info->link_rate)) {
> - dev_err(dp->dev, "failed to get link-rate\n");
> - return -EINVAL;
> - }
> -
> - if (of_property_read_u32(dp_node, "samsung,lane-count",
> - &video_info->lane_count)) {
> - dev_err(dp->dev, "failed to get lane-count\n");
> - return -EINVAL;
> + switch (dp->plat_data && dp->plat_data->dev_type) {
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c: In function ‘analogix_dp_dt_parse_pdata’:
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1191:10: warning: switch condition has boolean value [-Wswitch-bool]
switch (dp->plat_data && dp->plat_data->dev_type) {
^
As I think we always will need to distinguish between implementations,
I guess it should be safe to exit with an error, it that implementation-data
is not available, like just doing before the switch a:
if (!dp->plat_data)
return -EINVAL;
Heiko
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