From: Rizvi <syerizvi@xxxxxxx>
[Why]
Need driver to pass values of backlight ramp start and ramp reduction so
that intensity can be ramped down appropriately.
[How]
Using abm_parameters structure to get these values from driver.
Signed-off-by: Rizvi <SyedSaaem.Rizvi@xxxxxxx>
Acked-by: Bindu Ramamurthy <bindu.r@xxxxxxx>
---
.../amd/display/modules/power/power_helpers.c | 35 +++++++++++++------
.../amd/display/modules/power/power_helpers.h | 1 +
2 files changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
index cc983f662157..4fd8bce95d84 100644
--- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
+++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
@@ -82,22 +82,24 @@ struct abm_parameters {
unsigned char deviation_gain;
unsigned char min_knee;
unsigned char max_knee;
+ unsigned short blRampReduction;
+ unsigned short blRampStart;
};
static const struct abm_parameters abm_settings_config0[abm_defines_max_level] = {
-// min_red max_red bright_pos dark_pos brightness_gain contrast deviation min_knee max_knee
- {0xff, 0xbf, 0x20, 0x00, 0xff, 0x99, 0xb3, 0x40, 0xe0},
- {0xde, 0x85, 0x20, 0x00, 0xff, 0x90, 0xa8, 0x40, 0xdf},
- {0xb0, 0x50, 0x20, 0x00, 0xc0, 0x88, 0x78, 0x70, 0xa0},
- {0x82, 0x40, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
+// min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blStart blRed
+ {0xff, 0xbf, 0x20, 0x00, 0xff, 0x99, 0xb3, 0x40, 0xe0, 0xCCCC, 0xCCCC},
+ {0xde, 0x85, 0x20, 0x00, 0xff, 0x90, 0xa8, 0x40, 0xdf, 0xCCCC, 0xCCCC},
+ {0xb0, 0x50, 0x20, 0x00, 0xc0, 0x88, 0x78, 0x70, 0xa0, 0xCCCC, 0xCCCC},
+ {0x82, 0x40, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
};
static const struct abm_parameters abm_settings_config1[abm_defines_max_level] = {
-// min_red max_red bright_pos dark_pos brightness_gain contrast deviation min_knee max_knee
- {0xf0, 0xd9, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
- {0xcd, 0xa5, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
- {0x99, 0x65, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
- {0x82, 0x4d, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
+// min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blStart blRed
+ {0xf0, 0xd9, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
+ {0xcd, 0xa5, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
+ {0x99, 0x65, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
+ {0x82, 0x4d, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
};
static const struct abm_parameters * const abm_settings[] = {
@@ -662,6 +664,7 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
{
struct iram_table_v_2_2 ram_table;
struct abm_config_table config;
+ unsigned int set = params.set;
bool result = false;
uint32_t i, j = 0;
@@ -710,6 +713,18 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
config.max_knee[i] = ram_table.max_knee[i];
}
+ if (params.backlight_ramping_override) {
+ for (i = 0; i < NUM_AGGR_LEVEL; i++) {
+ config.blRampReduction[i] = params.backlight_ramping_reduction;
+ config.blRampStart[i] = params.backlight_ramping_start;
+ }
+ } else {
+ for (i = 0; i < NUM_AGGR_LEVEL; i++) {
+ config.blRampReduction[i] = abm_settings[set][i].blRampReduction;
+ config.blRampStart[i] = abm_settings[set][i].blRampStart;
+ }
+ }
+
config.min_abm_backlight = ram_table.min_abm_backlight;
#if defined(CONFIG_DRM_AMD_DC_DCN)
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.h b/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
index fa4728d88092..6f2eecce6baa 100644
--- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
+++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
@@ -39,6 +39,7 @@ enum abm_defines {
struct dmcu_iram_parameters {
unsigned int *backlight_lut_array;
unsigned int backlight_lut_array_size;
+ bool backlight_ramping_override;
unsigned int backlight_ramping_reduction;
unsigned int backlight_ramping_start;
unsigned int min_abm_backlight;
--
2.25.1
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