diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c index 74f7619d4154..761fdfc1f5bd 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c @@ -108,25 +108,17 @@ static uint32_t dce_panel_cntl_hw_init(struct panel_cntl *panel_cntl) */ REG_GET(BL_PWM_CNTL, BL_ACTIVE_INT_FRAC_CNT, &value); - if (value == 0 || value == 1) { - if (panel_cntl->stored_backlight_registers.BL_PWM_CNTL != 0) { - REG_WRITE(BL_PWM_CNTL, - panel_cntl->stored_backlight_registers.BL_PWM_CNTL); - REG_WRITE(BL_PWM_CNTL2, - panel_cntl->stored_backlight_registers.BL_PWM_CNTL2); - REG_WRITE(BL_PWM_PERIOD_CNTL, - panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL); - REG_UPDATE(PWRSEQ_REF_DIV, - BL_PWM_REF_DIV, - panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); - } else { - /* TODO: Note: This should not really happen since VBIOS - * should have initialized PWM registers on boot. - */ - REG_WRITE(BL_PWM_CNTL, 0xC000FA00); - REG_WRITE(BL_PWM_PERIOD_CNTL, 0x000C0FA0); - } - } else { + if (panel_cntl->stored_backlight_registers.BL_PWM_CNTL != 0) { + REG_WRITE(BL_PWM_CNTL, + panel_cntl->stored_backlight_registers.BL_PWM_CNTL); + REG_WRITE(BL_PWM_CNTL2, + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2); + REG_WRITE(BL_PWM_PERIOD_CNTL, + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL); + REG_UPDATE(PWRSEQ_REF_DIV, + BL_PWM_REF_DIV, + panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); + } else if ((value != 0) && (value != 1)) { panel_cntl->stored_backlight_registers.BL_PWM_CNTL = REG_READ(BL_PWM_CNTL); panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = @@ -136,6 +128,12 @@ static uint32_t dce_panel_cntl_hw_init(struct panel_cntl *panel_cntl) REG_GET(PWRSEQ_REF_DIV, BL_PWM_REF_DIV, &panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV); + } else { + /* TODO: Note: This should not really happen since VBIOS + * should have initialized PWM registers on boot. + */ + REG_WRITE(BL_PWM_CNTL, 0x8000FA00); + REG_WRITE(BL_PWM_PERIOD_CNTL, 0x000C0FA0); } // Have driver take backlight control |