drm/amd/display: Enable CACP on Linux

[Why]
Enable OLED panels to save more power on the Linux platform by
enabling CACP support on Linux.

[How]
Update abm_feature_support() to return ABM_CACP_SUPPORT for OLED
panels. Enable ABM property for all eDP panels including OLED to
support CACP via set_abm_level.

Reviewed-by: Sun peng (Leo) Li <sunpeng.li@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 147 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_power.h b/drivers/gpu/drm/amd/display/modules/inc/mod_power.h
index f9814cf7bbdb..02bee3b1956d 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_power.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_power.h
@@ -328,6 +328,17 @@ bool mod_power_is_abm_active(struct mod_power *mod_power,
 		const struct dc_link *link,
 		unsigned int inst);
 
+bool mod_power_is_abm_supported(struct mod_power *mod_power,
+		unsigned int inst);
+
+bool mod_power_abm_set_event(struct mod_power *mod_power,
+		unsigned int full_screen, unsigned int trans_info,
+		unsigned int hdr_mode, unsigned int scaling_enable,
+		unsigned int scaling_strength_map, unsigned int inst);
+
+bool mod_power_abm_set_strength(struct mod_power *mod_power,
+		unsigned int strength,
+		unsigned int inst);
 
 bool mod_power_set_psr_event(struct mod_power *mod_power,
 		struct dc_stream_state *stream, bool set_event,
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_abm.c b/drivers/gpu/drm/amd/display/modules/power/power_abm.c
index b9447cb7485b..5b972f04bf7a 100644
--- a/drivers/gpu/drm/amd/display/modules/power/power_abm.c
+++ b/drivers/gpu/drm/amd/display/modules/power/power_abm.c
@@ -1453,6 +1453,76 @@ bool mod_power_is_abm_active(struct mod_power *mod_power,
 	return is_active;
 }
 
+bool mod_power_is_abm_supported(struct mod_power *mod_power,
+		unsigned int inst)
+{
+	struct core_power *core_power = NULL;
+	struct dc *dc = NULL;
+
+	if (mod_power == NULL)
+		return false;
+
+	core_power = MOD_POWER_TO_CORE(mod_power);
+	dc = core_power->dc;
+
+	// It's only implemented on dmcub.
+	if (dc->ctx->dmub_srv) {
+		if (!dmub_is_abm_supported(dc->res_pool, inst))
+			return false;
+	} else
+		return false;
+
+	return true;
+}
+
+bool mod_power_abm_set_event(struct mod_power *mod_power,
+		unsigned int full_screen, unsigned int trans_info,
+		unsigned int hdr_mode, unsigned int scaling_enable,
+		unsigned int scaling_strength_map, unsigned int inst)
+{
+	struct core_power *core_power = NULL;
+	struct dc *dc = NULL;
+
+	if (mod_power == NULL)
+		return false;
+
+	core_power = MOD_POWER_TO_CORE(mod_power);
+	dc = core_power->dc;
+
+	// It's only implemented on dmcub.
+	if (dc->ctx->dmub_srv) {
+		if (!dmub_set_abm_event(dc->res_pool, full_screen, trans_info,
+				hdr_mode, scaling_enable, scaling_strength_map, inst))
+			return false;
+	} else
+		return false;
+
+	return true;
+}
+
+bool mod_power_abm_set_strength(struct mod_power *mod_power,
+		unsigned int strength,
+		unsigned int inst)
+{
+	struct core_power *core_power = NULL;
+	struct dc *dc = NULL;
+
+	if (mod_power == NULL)
+		return false;
+
+	core_power = MOD_POWER_TO_CORE(mod_power);
+	dc = core_power->dc;
+
+	// It's only implemented on dmcub.
+	if (dc->ctx->dmub_srv) {
+		if (!dmub_set_abm_strength(dc->res_pool, strength, inst))
+			return false;
+	} else
+		return false;
+
+	return true;
+}
+
 static void fill_backlight_transform_table(struct dmcu_iram_parameters params,
 		struct iram_table_v_2 *table)
 {
@@ -1990,6 +2060,62 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
 	return result;
 }
 
+bool dmub_is_abm_supported(struct resource_pool *res_pool, unsigned int inst)
+{
+
+	if (res_pool->abm == NULL && res_pool->multiple_abms[inst] == NULL)
+		return false;
+
+	return true;
+}
+
+bool dmub_set_abm_event(struct resource_pool *res_pool,
+		unsigned int full_screen, unsigned int trans_info,
+		unsigned int hdr_mode, unsigned int scaling_enable, unsigned int scaling_strength_map,
+		unsigned int inst)
+{
+	bool result = false;
+
+	if (res_pool->abm == NULL && res_pool->multiple_abms[inst] == NULL)
+		return false;
+
+	if (res_pool->multiple_abms[inst]) {
+		if (res_pool->multiple_abms[inst]->funcs->set_abm_event)
+			result = res_pool->multiple_abms[inst]->funcs->set_abm_event(
+				res_pool->multiple_abms[inst], full_screen, trans_info,
+					hdr_mode, scaling_enable, scaling_strength_map, inst);
+	} else {
+		if (res_pool->abm->funcs->set_abm_event)
+			result = res_pool->abm->funcs->set_abm_event(
+					res_pool->abm, full_screen, trans_info,
+					hdr_mode, scaling_enable, scaling_strength_map, inst);
+	}
+
+	return result;
+}
+
+bool dmub_set_abm_strength(struct resource_pool *res_pool,
+	unsigned int strength,
+	unsigned int inst)
+{
+	bool result = false;
+
+	if (res_pool->abm == NULL && res_pool->multiple_abms[inst] == NULL)
+		return false;
+
+	if (res_pool->multiple_abms[inst]) {
+		if (res_pool->multiple_abms[inst]->funcs->set_abm_level)
+			result = res_pool->multiple_abms[inst]->funcs->set_abm_level(
+				res_pool->multiple_abms[inst], strength);
+	} else {
+		if (res_pool->abm->funcs->set_abm_level)
+			result = res_pool->abm->funcs->set_abm_level(
+					res_pool->abm, strength);
+	}
+
+	return result;
+}
+
 bool dmcu_load_iram(struct dmcu *dmcu,
 	struct dmcu_iram_parameters params)
 {
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 600da3e33126..548c8ff6ddb4 100644
--- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
+++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
@@ -146,6 +146,16 @@ bool dmub_init_abm_config(struct resource_pool *res_pool,
 		struct dmcu_iram_parameters params,
 		unsigned int inst);
 
+bool dmub_is_abm_supported(struct resource_pool *res_pool,
+		unsigned int inst);
+bool dmub_set_abm_event(struct resource_pool *res_pool,
+		unsigned int full_screen, unsigned int trans_info,
+		unsigned int hdr_mode, unsigned int scaling_enable,
+		unsigned int scaling_strength_map, unsigned int inst);
+bool dmub_set_abm_strength(struct resource_pool *res_pool,
+		unsigned int strength,
+		unsigned int inst);
+
 void init_replay_config(struct dc_link *link, struct replay_config *pr_config);
 void set_replay_coasting_vtotal(struct dc_link *link,
 	enum replay_coasting_vtotal_type type,