From: Thierry Reding <tred...@nvidia.com>
Use existing parsing helpers to probe a DisplayPort link.
Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
drivers/gpu/drm/tegra/dp.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c
index e7602fc39a4a..f9234f66062d 100644
--- a/drivers/gpu/drm/tegra/dp.c
+++ b/drivers/gpu/drm/tegra/dp.c
@@ -47,21 +47,20 @@ static void drm_dp_link_reset(struct drm_dp_link *link)
*/
int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link)
{
- u8 values[3];
+ u8 dpcd[DP_RECEIVER_CAP_SIZE];
int err;
drm_dp_link_reset(link);
- err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values));
+ err = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, sizeof(dpcd));
if (err < 0)
return err;
- link->revision = values[0];
- link->max_rate = drm_dp_bw_code_to_link_rate(values[1]);
- link->max_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
+ link->revision = dpcd[DP_DPCD_REV];
+ link->max_rate = drm_dp_max_link_rate(dpcd);
+ link->max_lanes = drm_dp_max_lane_count(dpcd);
- if (values[2] & DP_ENHANCED_FRAME_CAP)
- link->caps.enhanced_framing = true;
+ link->caps.enhanced_framing = drm_dp_enhanced_frame_cap(dpcd);
link->rate = link->max_rate;
link->lanes = link->max_lanes;
--
2.23.0
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