diff options
| -rw-r--r-- | drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c index 9648b7f9a31c..b4e33e3e0250 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -28,11 +28,21 @@ #include "fsl_dcu_drm_crtc.h" #include "fsl_dcu_drm_drv.h" +static bool fsl_dcu_drm_is_volatile_reg(struct device *dev, unsigned int reg) +{ + if (reg == DCU_INT_STATUS || reg == DCU_UPDATE_MODE) + return true; + + return false; +} + static const struct regmap_config fsl_dcu_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .cache_type = REGCACHE_RBTREE, + + .volatile_reg = fsl_dcu_drm_is_volatile_reg, }; static int fsl_dcu_drm_irq_init(struct drm_device *dev) @@ -125,7 +135,7 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg) if (int_status & DCU_INT_STATUS_VBLANK) drm_handle_vblank(dev, 0); - ret = regmap_write(fsl_dev->regmap, DCU_INT_STATUS, 0xffffffff); + ret = regmap_write(fsl_dev->regmap, DCU_INT_STATUS, int_status); if (ret) dev_err(dev->dev, "set DCU_INT_STATUS failed\n"); ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, |