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| author | Stefan Agner <stefan@agner.ch> | 2015-11-18 17:27:04 -0800 |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2016-02-25 16:13:16 -0800 |
| commit | 638c93f61988c6fcc821646399f1fdd3895a34a2 (patch) | |
| tree | 49397961c6f3da6cc597906d007cd0d675abbff6 /drivers/gpu/drm/fsl-dcu | |
| parent | 7566e247672d6ab67ce2a4c0fe03c17d695481b7 (diff) | |
| download | linux-0-day-638c93f61988c6fcc821646399f1fdd3895a34a2.tar.gz linux-0-day-638c93f61988c6fcc821646399f1fdd3895a34a2.tar.xz | |
drm/fsl-dcu: mask all interrupts on initialization
The state of the interrupt mask register on initialization is
unknown, e.g. U-Boot could already used the DCU. So depending on
the boot loader, the outcome of the interrupt mask register could
be different. A defined state is much more preferable. Also, there
is no value in keeping interrupts enabled which we don't need.
Therefor, mask all interrupts on initialization.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Diffstat (limited to 'drivers/gpu/drm/fsl-dcu')
| -rw-r--r-- | drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 5 |
1 files changed, 1 insertions, 4 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 acb8758b63e2c..e8d9337a66d87 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -48,7 +48,6 @@ static const struct regmap_config fsl_dcu_regmap_config = { static int fsl_dcu_drm_irq_init(struct drm_device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; - unsigned int value; int ret; ret = drm_irq_install(dev, fsl_dev->irq); @@ -56,9 +55,7 @@ static int fsl_dcu_drm_irq_init(struct drm_device *dev) dev_err(dev->dev, "failed to install IRQ handler\n"); regmap_write(fsl_dev->regmap, DCU_INT_STATUS, 0); - regmap_read(fsl_dev->regmap, DCU_INT_MASK, &value); - value &= DCU_INT_MASK_VBLANK; - regmap_write(fsl_dev->regmap, DCU_INT_MASK, value); + regmap_write(fsl_dev->regmap, DCU_INT_MASK, ~0); regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG); |