From: Hamza Mahfooz <hamza.mahfooz@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: stylon.wang@amd.com, Sunpeng.Li@amd.com, Harry.Wentland@amd.com,
qingqing.zhuo@amd.com, Rodrigo.Siqueira@amd.com,
roman.li@amd.com, solomon.chiu@amd.com, jerry.zuo@amd.com,
Aurabindo.Pillai@amd.com, hamza.mahfooz@amd.com,
wayne.lin@amd.com, Bhawanpreet.Lakha@amd.com,
agustin.gutierrez@amd.com, pavle.kotarac@amd.com
Subject: [PATCH 07/16] drm/amd/display: Cap OLED brightness per max frame-average luminance
Date: Fri, 3 Jun 2022 16:11:38 -0400 [thread overview]
Message-ID: <20220603201147.121817-8-hamza.mahfooz@amd.com> (raw)
In-Reply-To: <20220603201147.121817-1-hamza.mahfooz@amd.com>
From: Roman Li <roman.li@amd.com>
[Why]
For OLED eDP the Display Manager uses max_cll value as a limit
for brightness control.
max_cll defines the content light luminance for individual pixel.
Whereas max_fall defines frame-average level luminance.
The user may not observe the difference in brightness in between
max_fall and max_cll.
That negatively impacts the user experience.
[How]
Use max_fall value instead of max_cll as a limit for brightness control.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 8345bdb7c7b3..5e1cfae96ab2 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2813,7 +2813,7 @@ static struct drm_mode_config_helper_funcs amdgpu_dm_mode_config_helperfuncs = {
static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector)
{
- u32 max_cll, min_cll, max, min, q, r;
+ u32 max_avg, min_cll, max, min, q, r;
struct amdgpu_dm_backlight_caps *caps;
struct amdgpu_display_manager *dm;
struct drm_connector *conn_base;
@@ -2843,7 +2843,7 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector)
caps = &dm->backlight_caps[i];
caps->ext_caps = &aconnector->dc_link->dpcd_sink_ext_caps;
caps->aux_support = false;
- max_cll = conn_base->hdr_sink_metadata.hdmi_type1.max_cll;
+ max_avg = conn_base->hdr_sink_metadata.hdmi_type1.max_fall;
min_cll = conn_base->hdr_sink_metadata.hdmi_type1.min_cll;
if (caps->ext_caps->bits.oled == 1 /*||
@@ -2871,8 +2871,8 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector)
* The results of the above expressions can be verified at
* pre_computed_values.
*/
- q = max_cll >> 5;
- r = max_cll % 32;
+ q = max_avg >> 5;
+ r = max_avg % 32;
max = (1 << q) * pre_computed_values[r];
// min luminance: maxLum * (CV/255)^2 / 100
--
2.36.1
next prev parent reply other threads:[~2022-06-03 20:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-03 20:11 [PATCH 00/16] DC Patches May 30, 2022 Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 01/16] drm/amd/display: Update optimized blank calc and programming Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 02/16] drm/amd/display: Detect dpcd_rev when hotplug mst monitor Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 03/16] Revert "drm/amd/display: Pass the new context into disable OTG WA" Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 04/16] drm/amd/display: Blank eDP on enable drv if odm enabled Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 05/16] drm/amd/display: Correct min comp buffer size Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 06/16] drm/amd/display: add DP sanity checks during enable stream Hamza Mahfooz
2022-06-03 20:11 ` Hamza Mahfooz [this message]
2022-06-08 10:02 ` [PATCH 07/16] drm/amd/display: Cap OLED brightness per max frame-average luminance Aaron Ma
2022-06-08 19:02 ` Li, Roman
2022-06-03 20:11 ` [PATCH 08/16] drm/amd/display: Enable 3 plane MPO Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 09/16] drm/amd/display: [FW Promotion] Release 0.0.119.0 Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 10/16] drm/amd/display: 3.2.188 Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 11/16] drm/amd/display: Fix dpp dto for disabled pipes Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 12/16] drm/amd/display: Fix entry into transient encoder assignment mode Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 13/16] drm/amd/display: Avoid reading LTTPR caps in non-LTTPR mode Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 14/16] drm/amd/display: Extend soc BB capabilitiy Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 15/16] drm/amd/display: Add HDMI member to DTO Hamza Mahfooz
2022-06-03 20:11 ` [PATCH 16/16] drm/amd/display: 3.2.189 Hamza Mahfooz
2022-06-06 13:38 ` [PATCH 00/16] DC Patches May 30, 2022 Wheeler, Daniel
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