diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw/abm.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c index e9765bb38a8b..2a342eae80fd 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c @@ -276,6 +276,17 @@ static unsigned int dce_abm_get_current_backlight(struct abm *abm) return backlight; } +static unsigned int dce_abm_get_target_backlight(struct abm *abm) +{ + struct dce_abm *abm_dce = TO_DCE_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 dce_abm_set_level(struct abm *abm, uint32_t level) { struct dce_abm *abm_dce = TO_DCE_ABM(abm); @@ -410,6 +421,7 @@ static const struct abm_funcs dce_funcs = { .init_backlight = dce_abm_init_backlight, .set_backlight_level_pwm = dce_abm_set_backlight_level_pwm, .get_current_backlight = dce_abm_get_current_backlight, + .get_target_backlight = dce_abm_get_target_backlight, .set_abm_immediate_disable = dce_abm_immediate_disable }; diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h index 458a641dc796..abc961c0906e 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h @@ -58,6 +58,7 @@ struct abm_funcs { bool use_smooth_brightness); unsigned int (*get_current_backlight)(struct abm *abm); + unsigned int (*get_target_backlight)(struct abm *abm); }; #endif |