On Fri, Mar 25, 2022 at 2:27 AM Ryan Lin tsung-hua.lin@amd.com wrote:
Disable ABM feature when the system is running on AC mode to get the more perfect contrast of the display.
Signed-off-by: Ryan Lin tsung-hua.lin@amd.com
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 4 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 + drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c | 58 ++++++++++++------- drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h | 1 + 4 files changed, 42 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index c560c1ab62ecb..bc8bb9aad2e36 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -822,6 +822,10 @@ static int amdgpu_acpi_event(struct notifier_block *nb, struct amdgpu_device *adev = container_of(nb, struct amdgpu_device, acpi_nb); struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
if (strcmp(entry->device_class, "battery") == 0) {adev->pm.ac_power = power_supply_is_system_supplied() > 0;}
We already set adev->pm.ac_power in amdgpu_pm_acpi_event_handler() which gets called a few lines below.
Alex
if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) { if (power_supply_is_system_supplied() > 0) DRM_DEBUG_DRIVER("pm: AC\n");diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index abfcc1304ba0c..3a0afe7602727 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3454,6 +3454,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
adev->gfx.gfx_off_req_count = 1; adev->pm.ac_power = power_supply_is_system_supplied() > 0;
adev->pm.old_ac_power = true; atomic_set(&adev->throttling_logging_enabled, 1); /*diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c index 54a1408c8015c..478a734b66926 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c @@ -23,6 +23,8 @@
*/
+#include <linux/power_supply.h> +#include "amdgpu.h" #include "dmub_abm.h" #include "dce_abm.h" #include "dc.h" @@ -51,6 +53,7 @@ #define DISABLE_ABM_IMMEDIATELY 255
+extern uint amdgpu_dm_abm_level;
static void dmub_abm_enable_fractional_pwm(struct dc_context *dc) { @@ -117,28 +120,6 @@ static void dmub_abm_init(struct abm *abm, uint32_t backlight) dmub_abm_enable_fractional_pwm(abm->ctx); }
-static unsigned int dmub_abm_get_current_backlight(struct abm *abm) -{
struct dce_abm *dce_abm = TO_DMUB_ABM(abm);unsigned int backlight = REG_READ(BL1_PWM_CURRENT_ABM_LEVEL);/* return backlight in hardware format which is unsigned 17 bits, with* 1 bit integer and 16 bit fractional*/return backlight;-}
-static unsigned int dmub_abm_get_target_backlight(struct abm *abm) -{
struct dce_abm *dce_abm = TO_DMUB_ABM(abm);unsigned int backlight = REG_READ(BL1_PWM_TARGET_ABM_LEVEL);/* return backlight in hardware format which is unsigned 17 bits, with* 1 bit integer and 16 bit fractional*/return backlight;-}
static bool dmub_abm_set_level(struct abm *abm, uint32_t level) { union dmub_rb_cmd cmd; @@ -148,6 +129,9 @@ static bool dmub_abm_set_level(struct abm *abm, uint32_t level) int edp_num; uint8_t panel_mask = 0;
if (power_supply_is_system_supplied() > 0)level = 0;get_edp_links(dc->dc, edp_links, &edp_num); for (i = 0; i < edp_num; i++) {@@ -170,6 +154,36 @@ static bool dmub_abm_set_level(struct abm *abm, uint32_t level) return true; }
+static unsigned int dmub_abm_get_current_backlight(struct abm *abm) +{
struct dce_abm *dce_abm = TO_DMUB_ABM(abm);unsigned int backlight = REG_READ(BL1_PWM_CURRENT_ABM_LEVEL);struct dc_context *dc = abm->ctx;struct amdgpu_device *adev = dc->driver_context;if (adev->pm.ac_power != adev->pm.old_ac_power) {dmub_abm_set_level(abm, amdgpu_dm_abm_level);adev->pm.ac_power = power_supply_is_system_supplied() > 0;adev->pm.old_ac_power = adev->pm.ac_power;}/* return backlight in hardware format which is unsigned 17 bits, with* 1 bit integer and 16 bit fractional*/return backlight;+}
+static unsigned int dmub_abm_get_target_backlight(struct abm *abm) +{
struct dce_abm *dce_abm = TO_DMUB_ABM(abm);unsigned int backlight = REG_READ(BL1_PWM_TARGET_ABM_LEVEL);/* return backlight in hardware format which is unsigned 17 bits, with* 1 bit integer and 16 bit fractional*/return backlight;+}
static bool dmub_abm_init_config(struct abm *abm, const char *src, unsigned int bytes, diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h index f6e0e7d8a0077..de459411a0e83 100644 --- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h +++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h @@ -445,6 +445,7 @@ struct amdgpu_pm { uint32_t smu_prv_buffer_size; struct amdgpu_bo *smu_prv_buffer; bool ac_power;
bool old_ac_power; /* powerplay feature */ uint32_t pp_feature;-- 2.25.1