xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/tegra: dp: Add support for eDP link rates

Browse Source 
Parses additional link rates from DPCD if the sink supports eDP 1.4.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding
2018-02-01 17:46:42 +01:00
parent 01f09f242e
commit 6a127160c4
2 changed files with 136 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/tegra/dp.h
View File

@@ -66,6 +66,8 @@ void drm_dp_link_caps_copy(struct drm_dp_link_caps *dest,
* @edp: eDP revision (0x11: eDP 1.1, 0x12: eDP 1.2, ...)
* @rate: currently configured link rate
* @lanes: currently configured number of lanes
* @rates: additional supported link rates in kHz (eDP 1.4)
* @num_rates: number of additional supported link rates (eDP 1.4)
*/
struct drm_dp_link {
unsigned char revision;
@@ -87,8 +89,15 @@ struct drm_dp_link {
unsigned int rate;
unsigned int lanes;
unsigned long rates[DP_MAX_SUPPORTED_RATES];
unsigned int num_rates;
};
int drm_dp_link_add_rate(struct drm_dp_link *link, unsigned long rate);
int drm_dp_link_remove_rate(struct drm_dp_link *link, unsigned long rate);
void drm_dp_link_update_rates(struct drm_dp_link *link);
int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link);
int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link);
int drm_dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link);