mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-02 18:04:38 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/alpm: Enable lobf from source in ALPM_CTL

Browse Source 
Set the Link Off Between Frames Enable bit in ALPM_CTL register.

Note: Lobf need to be enabled adaptive sync fixed refresh mode
where vmin = vmax = flipline, which will arise after cmmr feature
enablement. Will add enabling sequence in a separate patch.

v1: Initial version.
v2: Condition check modified in alpm_configure(). [Jouni]

Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240529200742.1694401-6-animesh.manna@intel.com
This commit is contained in:
Animesh Manna
2024-05-30 01:37:41 +05:30
parent 15438b3259
commit 5a9b255fdb
3 changed files with 14 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/i915/display/intel_alpm.c
View File

@@ -304,10 +304,11 @@ void intel_alpm_lobf_compute_config(struct intel_dp *intel_dp,
(first_sdp_position + waketime_in_lines);
}
static void lnl_alpm_configure(struct intel_dp *intel_dp)
static void lnl_alpm_configure(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 alpm_ctl;
if (DISPLAY_VER(dev_priv) < 20 || (!intel_dp->psr.sel_update_enabled &&
@@ -318,7 +319,8 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp)
* Panel Replay on eDP is always using ALPM aux less. I.e. no need to
* check panel support at this point.
*/
if (intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) {
if ((intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) ||
(crtc_state->has_lobf && intel_alpm_aux_less_wake_supported(intel_dp))) {
alpm_ctl = ALPM_CTL_ALPM_ENABLE |
ALPM_CTL_ALPM_AUX_LESS_ENABLE |
ALPM_CTL_AUX_LESS_SLEEP_HOLD_TIME_50_SYMBOLS;
@@ -345,12 +347,16 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp)
ALPM_CTL_EXTENDED_FAST_WAKE_TIME(intel_dp->alpm_parameters.fast_wake_lines);
}
if (crtc_state->has_lobf)
alpm_ctl |= ALPM_CTL_LOBF_ENABLE;
alpm_ctl |= ALPM_CTL_ALPM_ENTRY_CHECK(intel_dp->alpm_parameters.check_entry_lines);
intel_de_write(dev_priv, ALPM_CTL(dev_priv, cpu_transcoder), alpm_ctl);
}
void intel_alpm_configure(struct intel_dp *intel_dp)
void intel_alpm_configure(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
lnl_alpm_configure(intel_dp);
lnl_alpm_configure(intel_dp, crtc_state);
}

4
drivers/gpu/drm/i915/display/intel_alpm.h
View File

@@ -18,6 +18,6 @@ bool intel_alpm_compute_params(struct intel_dp *intel_dp,
void intel_alpm_lobf_compute_config(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state);
void intel_alpm_configure(struct intel_dp *intel_dp);
void intel_alpm_configure(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state);
#endif

2
drivers/gpu/drm/i915/display/intel_psr.c
View File

@@ -1685,7 +1685,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
IGNORE_PSR2_HW_TRACKING : 0);
if (intel_dp_is_edp(intel_dp))
intel_alpm_configure(intel_dp);
intel_alpm_configure(intel_dp, crtc_state);
/*
* Wa_16013835468