Disable ABM feature when the system is running on AC mode to get the more perfect contrast of the display.
v2: remove "UPSTREAM" from the subject.
v3: adv->pm.ac_power updating by amd gpu_acpi_event_handler.
V4: Add the file I lost to fix the build error.
Signed-off-by: Ryan Lin tsung-hua.lin@amd.com
--- drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 + drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c | 61 +++++++++++-------- drivers/gpu/drm/amd/include/amd_acpi.h | 1 + drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h | 1 + 5 files changed, 42 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index 4811b0faafd9a..6ac331ee4255d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -822,7 +822,8 @@ 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, ACPI_AC_CLASS) == 0) { + if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0 || + strcmp(entry->device_class, ACPI_BATTERY_CLASS) == 0) { if (power_supply_is_system_supplied() > 0) DRM_DEBUG_DRIVER("pm: AC\n"); else 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..090bd23410b45 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c @@ -22,7 +22,8 @@ * Authors: AMD * */ - +#include <linux/power_supply.h> +#include "amdgpu.h" #include "dmub_abm.h" #include "dce_abm.h" #include "dc.h" @@ -50,7 +51,7 @@
#define DISABLE_ABM_IMMEDIATELY 255
- +extern uint amdgpu_dm_abm_level;
static void dmub_abm_enable_fractional_pwm(struct dc_context *dc) { @@ -117,28 +118,6 @@ 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; @@ -147,6 +126,10 @@ static bool dmub_abm_set_level(struct abm *abm, uint32_t level) int i; int edp_num; uint8_t panel_mask = 0; + struct amdgpu_device *dev = dc->driver_context; + + if (dev->pm.ac_power) + level = 0;
get_edp_links(dc->dc, edp_links, &edp_num);
@@ -170,6 +153,36 @@ 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/include/amd_acpi.h b/drivers/gpu/drm/amd/include/amd_acpi.h index 2d089d30518f3..5a62e580668e4 100644 --- a/drivers/gpu/drm/amd/include/amd_acpi.h +++ b/drivers/gpu/drm/amd/include/amd_acpi.h @@ -25,6 +25,7 @@ #define AMD_ACPI_H
#define ACPI_AC_CLASS "ac_adapter" +#define ACPI_BATTERY_CLASS "battery"
struct atif_verify_interface { u16 size; /* structure size in bytes (includes size field) */ 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;