On 2022-03-25 00:05, Ryan Lin wrote: > Disable ABM feature when the system is running on AC mode to get > the more perfect contrast of the display. It says patch 3 out of 25. Are there other patches? If so, I can't find them in my mailbox and neither can patchwork https://patchwork.freedesktop.org/series/101767/ > Signed-off-by: Ryan Lin <tsung-hua.lin@xxxxxxx> > > --- > 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; > + } > + > 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) { This file lives in DC, which is shared code between Windows and Linux. We cannot directly use adev here. Any information needs to go through DC structs. I seem to remember someone saying that ABM gets disabled on Windows when we're in AC mode. Have you checked with our Windows guys about this? I feel we're re-inventing the wheel here for no good reason. Harry > + 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; >
