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drm/amd/display: gradually ramp ABM intensity
[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 <syerizvi@amd.com> Acked-by: Bindu Ramamurthy <bindu.r@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -82,22 +82,24 @@ struct abm_parameters {
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unsigned char deviation_gain;
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unsigned char min_knee;
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unsigned char max_knee;
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unsigned short blRampReduction;
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unsigned short blRampStart;
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};
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static const struct abm_parameters abm_settings_config0[abm_defines_max_level] = {
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// min_red max_red bright_pos dark_pos brightness_gain contrast deviation min_knee max_knee
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{0xff, 0xbf, 0x20, 0x00, 0xff, 0x99, 0xb3, 0x40, 0xe0},
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{0xde, 0x85, 0x20, 0x00, 0xff, 0x90, 0xa8, 0x40, 0xdf},
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{0xb0, 0x50, 0x20, 0x00, 0xc0, 0x88, 0x78, 0x70, 0xa0},
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{0x82, 0x40, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
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// min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blStart blRed
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{0xff, 0xbf, 0x20, 0x00, 0xff, 0x99, 0xb3, 0x40, 0xe0, 0xCCCC, 0xCCCC},
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{0xde, 0x85, 0x20, 0x00, 0xff, 0x90, 0xa8, 0x40, 0xdf, 0xCCCC, 0xCCCC},
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{0xb0, 0x50, 0x20, 0x00, 0xc0, 0x88, 0x78, 0x70, 0xa0, 0xCCCC, 0xCCCC},
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{0x82, 0x40, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
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};
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static const struct abm_parameters abm_settings_config1[abm_defines_max_level] = {
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// min_red max_red bright_pos dark_pos brightness_gain contrast deviation min_knee max_knee
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{0xf0, 0xd9, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
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{0xcd, 0xa5, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
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{0x99, 0x65, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
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{0x82, 0x4d, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70},
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// min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blStart blRed
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{0xf0, 0xd9, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
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{0xcd, 0xa5, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
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{0x99, 0x65, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
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{0x82, 0x4d, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xCCCC, 0xCCCC},
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};
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static const struct abm_parameters * const abm_settings[] = {
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@ -662,6 +664,7 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
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{
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struct iram_table_v_2_2 ram_table;
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struct abm_config_table config;
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unsigned int set = params.set;
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bool result = false;
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uint32_t i, j = 0;
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@ -710,6 +713,18 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
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config.max_knee[i] = ram_table.max_knee[i];
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}
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if (params.backlight_ramping_override) {
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for (i = 0; i < NUM_AGGR_LEVEL; i++) {
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config.blRampReduction[i] = params.backlight_ramping_reduction;
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config.blRampStart[i] = params.backlight_ramping_start;
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}
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} else {
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for (i = 0; i < NUM_AGGR_LEVEL; i++) {
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config.blRampReduction[i] = abm_settings[set][i].blRampReduction;
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config.blRampStart[i] = abm_settings[set][i].blRampStart;
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}
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}
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config.min_abm_backlight = ram_table.min_abm_backlight;
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#if defined(CONFIG_DRM_AMD_DC_DCN)
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@ -39,6 +39,7 @@ enum abm_defines {
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struct dmcu_iram_parameters {
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unsigned int *backlight_lut_array;
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unsigned int backlight_lut_array_size;
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bool backlight_ramping_override;
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unsigned int backlight_ramping_reduction;
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unsigned int backlight_ramping_start;
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unsigned int min_abm_backlight;
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