diff options
| -rw-r--r-- | drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c index d44a61b99865..9ceeb1a5b47d 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c @@ -95,6 +95,24 @@ static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; + int i; + unsigned int value; + unsigned int mode; + + /* Disable automatic transfer mode */ + regmap_update_bits(fsl_dev->regmap, DCU_UPDATE_MODE, + DCU_UPDATE_MODE_MODE, 0); + + /* Disable all planes */ + for (i = 0; i < fsl_dev->soc->total_layer; i++) { + regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(i, 4), &value); + value &= ~DCU_LAYER_EN; + regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, 4), value); + } + regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, + DCU_UPDATE_MODE_READREG); + while (!regmap_read(fsl_dev->regmap, DCU_UPDATE_MODE, &mode) && + mode & DCU_UPDATE_MODE_READREG); regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE, DCU_MODE_DCU_MODE_MASK, |