Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-20 23:13:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/psr: Split enabling sink for PSR and Panel Replay

Browse Source 
Current intel_psr_enable_sink is a mess due to partly reusing PSR bit
definitions for Panel Replay. Even thought PSR and Panel Replay enable
registers do have common bits they still have also different bits and same
bits with different meaning. For sake of clarity split enabling sink to PSR
and Panel Replay specific parts.

Also fix issue caused by using psr->panel_replay_enabled to early.

Fixes: 88ae6c65ec ("drm/i915/psr: Unify panel replay enable/disable sink")
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607134917.1327574-7-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2024-06-07 16:49:10 +03:00
parent 91930fc039
commit 32f0045f90
1 changed files with 51 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
drivers/gpu/drm/i915/display/intel_psr.c
View File

@ -686,56 +686,62 @@ static bool psr2_su_region_et_valid(struct intel_dp *intel_dp)
return false;
}
static unsigned int intel_psr_get_enable_sink_offset(struct intel_dp *intel_dp)
static void _panel_replay_enable_sink(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
return intel_dp->psr.panel_replay_enabled ?
PANEL_REPLAY_CONFIG : DP_PSR_EN_CFG;
u8 val = DP_PANEL_REPLAY_ENABLE |
DP_PANEL_REPLAY_VSC_SDP_CRC_EN |
DP_PANEL_REPLAY_UNRECOVERABLE_ERROR_EN |
DP_PANEL_REPLAY_RFB_STORAGE_ERROR_EN |
DP_PANEL_REPLAY_ACTIVE_FRAME_CRC_ERROR_EN;
if (crtc_state->has_sel_update)
val |= DP_PANEL_REPLAY_SU_ENABLE;
if (crtc_state->enable_psr2_su_region_et)
val |= DP_PANEL_REPLAY_ENABLE_SU_REGION_ET;
drm_dp_dpcd_writeb(&intel_dp->aux, PANEL_REPLAY_CONFIG, val);
}
static void _psr_enable_sink(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
u8 val = DP_PSR_ENABLE;
if (crtc_state->has_sel_update) {
val |= DP_PSR_ENABLE_PSR2 | DP_PSR_IRQ_HPD_WITH_CRC_ERRORS;
} else {
if (intel_dp->psr.link_standby)
val |= DP_PSR_MAIN_LINK_ACTIVE;
if (DISPLAY_VER(i915) >= 8)
val |= DP_PSR_CRC_VERIFICATION;
}
if (crtc_state->enable_psr2_su_region_et)
val |= DP_PANEL_REPLAY_ENABLE_SU_REGION_ET;
if (intel_dp->psr.entry_setup_frames > 0)
val |= DP_PSR_FRAME_CAPTURE;
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, val);
}
/*
* Note: Most of the bits are same in PANEL_REPLAY_CONFIG and DP_PSR_EN_CFG. We
* are relying on PSR definitions on these "common" bits.
*/
void intel_psr_enable_sink(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
u8 dpcd_val = DP_PSR_ENABLE;
if (crtc_state->has_sel_update) {
/* Enable ALPM at sink for psr2 */
if (!crtc_state->has_panel_replay) {
if (!crtc_state->has_panel_replay && crtc_state->has_sel_update)
drm_dp_dpcd_writeb(&intel_dp->aux,
DP_RECEIVER_ALPM_CONFIG,
DP_ALPM_ENABLE |
DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
if (crtc_state->enable_psr2_su_region_et)
dpcd_val |= DP_PSR_ENABLE_SU_REGION_ET;
}
dpcd_val |= DP_PSR_ENABLE_PSR2 | DP_PSR_IRQ_HPD_WITH_CRC_ERRORS;
} else {
if (intel_dp->psr.link_standby)
dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
if (!crtc_state->has_panel_replay && DISPLAY_VER(dev_priv) >= 8)
dpcd_val |= DP_PSR_CRC_VERIFICATION;
}
if (crtc_state->has_panel_replay)
dpcd_val |= DP_PANEL_REPLAY_UNRECOVERABLE_ERROR_EN |
DP_PANEL_REPLAY_RFB_STORAGE_ERROR_EN;
if (crtc_state->req_psr2_sdp_prior_scanline)
dpcd_val |= DP_PSR_SU_REGION_SCANLINE_CAPTURE;
if (intel_dp->psr.entry_setup_frames > 0)
dpcd_val |= DP_PSR_FRAME_CAPTURE;
drm_dp_dpcd_writeb(&intel_dp->aux,
intel_psr_get_enable_sink_offset(intel_dp),
dpcd_val);
crtc_state->has_panel_replay ?
_panel_replay_enable_sink(intel_dp, crtc_state) :
_psr_enable_sink(intel_dp, crtc_state);
if (intel_dp_is_edp(intel_dp))
drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
@ -1921,7 +1927,8 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
/* Disable PSR on Sink */
drm_dp_dpcd_writeb(&intel_dp->aux,
intel_psr_get_enable_sink_offset(intel_dp), 0);
intel_dp->psr.panel_replay_enabled ?
PANEL_REPLAY_CONFIG : DP_PSR_EN_CFG, 0);
if (!intel_dp->psr.panel_replay_enabled &&
intel_dp->psr.sel_update_enabled)