diff options
| author | Jouni Högander <jouni.hogander@intel.com> | 2025-05-26 15:05:03 +0300 |
|---|---|---|
| committer | Jouni Högander <jouni.hogander@intel.com> | 2025-05-29 08:13:39 +0300 |
| commit | deb8d0fe88a71c53b2f3db3a17bd459ff436bbb0 (patch) | |
| tree | d462d57dfc69ee4f7158594e6df220113ca2959e | |
| parent | 3e61b092e61d8f7f0b882f07ede9a0a553197e21 (diff) | |
| download | linux-deb8d0fe88a71c53b2f3db3a17bd459ff436bbb0.tar.xz | |
drm/i915/psr: Read all Panel Replay capability registers from DPCD
There are several Panel Replay capability register in DPCD. Read them
all for later use.
v2:
- avoid using hardcoded indices
- read all Panel Replay capability registers
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://lore.kernel.org/r/20250526120512.1702815-4-jouni.hogander@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_types.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 20 |
2 files changed, 16 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index fc1eda590da8..ed4d743fc7c5 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1669,7 +1669,9 @@ struct intel_dp { bool use_max_params; u8 dpcd[DP_RECEIVER_CAP_SIZE]; u8 psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE]; - u8 pr_dpcd; + u8 pr_dpcd[DP_PANEL_REPLAY_CAP_SIZE]; +#define INTEL_PR_DPCD_INDEX(pr_dpcd_register) ((pr_dpcd_register) - DP_PANEL_REPLAY_CAP_SUPPORT) + u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; u8 edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE]; u8 lttpr_common_caps[DP_LTTPR_COMMON_CAP_SIZE]; diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 0cfdeff268f9..1072549649cd 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -608,7 +608,8 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp) return; } - if (!(intel_dp->pr_dpcd & DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT)) { + if (!(intel_dp->pr_dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)] & + DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT)) { drm_dbg_kms(display->drm, "Panel doesn't support early transport, eDP Panel Replay not possible\n"); return; @@ -617,7 +618,8 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp) intel_dp->psr.sink_panel_replay_support = true; - if (intel_dp->pr_dpcd & DP_PANEL_REPLAY_SU_SUPPORT) + if (intel_dp->pr_dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)] & + DP_PANEL_REPLAY_SU_SUPPORT) intel_dp->psr.sink_panel_replay_su_support = true; drm_dbg_kms(display->drm, @@ -676,10 +678,12 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp) { drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, intel_dp->psr_dpcd, sizeof(intel_dp->psr_dpcd)); - drm_dp_dpcd_readb(&intel_dp->aux, DP_PANEL_REPLAY_CAP_SUPPORT, - &intel_dp->pr_dpcd); - if (intel_dp->pr_dpcd & DP_PANEL_REPLAY_SUPPORT) + drm_dp_dpcd_read(&intel_dp->aux, DP_PANEL_REPLAY_CAP_SUPPORT, + &intel_dp->pr_dpcd, sizeof(intel_dp->pr_dpcd)); + + if (intel_dp->pr_dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)] & + DP_PANEL_REPLAY_SUPPORT) _panel_replay_init_dpcd(intel_dp); if (intel_dp->psr_dpcd[0]) @@ -736,7 +740,8 @@ static bool psr2_su_region_et_valid(struct intel_dp *intel_dp, bool panel_replay return false; return panel_replay ? - intel_dp->pr_dpcd & DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT : + intel_dp->pr_dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)] & + DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT : intel_dp->psr_dpcd[0] == DP_PSR2_WITH_Y_COORD_ET_SUPPORTED && psr2_su_region_et_global_enabled(intel_dp); } @@ -3916,7 +3921,8 @@ static void intel_psr_sink_capability(struct intel_dp *intel_dp, seq_printf(m, ", Panel Replay = %s", str_yes_no(psr->sink_panel_replay_support)); seq_printf(m, ", Panel Replay Selective Update = %s", str_yes_no(psr->sink_panel_replay_su_support)); - if (intel_dp->pr_dpcd & DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT) + if (intel_dp->pr_dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)] & + DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT) seq_printf(m, " (Early Transport)"); seq_printf(m, "\n"); } |