diff options
| author | Jinyoung Jeon <jy0.jeon@samsung.com> | 2012-12-22 12:49:28 +0400 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2013-01-04 10:54:33 +0400 |
| commit | e39d5ce13201b18a3ae458c023fc7b4cb33263e8 (patch) | |
| tree | ef6c98ace1077916411c408c6f2e65101040bda9 /drivers/gpu/drm/exynos/exynos_drm_fimc.c | |
| parent | b5c0b5526a97ff5d9e72d1c5d460ca20257987ae (diff) | |
| download | linux-e39d5ce13201b18a3ae458c023fc7b4cb33263e8.tar.xz | |
drm/exynos: fix incorrect interrupt induced by m2m operation.
This patch fixes incorrect interrupt induced by m2m operation.
the m2m operation calls s/w reset every frame but there is the case that
the interrupt to m2m operation occures after s/w reset sometimes.
So this patch makes dma and capture operations stop at s/w reset
to avoid incorrect interrupt.
Signed-off-by: Jinyoung Jeon <jy0.jeon@samsung.com>
Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fimc.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c index a99ceefcc286..9f52b7faa4b3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c @@ -169,10 +169,23 @@ static void fimc_sw_reset(struct fimc_context *ctx) DRM_DEBUG_KMS("%s\n", __func__); + /* stop dma operation */ + cfg = fimc_read(EXYNOS_CISTATUS); + if (EXYNOS_CISTATUS_GET_ENVID_STATUS(cfg)) { + cfg = fimc_read(EXYNOS_MSCTRL); + cfg &= ~EXYNOS_MSCTRL_ENVID; + fimc_write(cfg, EXYNOS_MSCTRL); + } + cfg = fimc_read(EXYNOS_CISRCFMT); cfg |= EXYNOS_CISRCFMT_ITU601_8BIT; fimc_write(cfg, EXYNOS_CISRCFMT); + /* disable image capture */ + cfg = fimc_read(EXYNOS_CIIMGCPT); + cfg &= ~(EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN); + fimc_write(cfg, EXYNOS_CIIMGCPT); + /* s/w reset */ cfg = fimc_read(EXYNOS_CIGCTRL); cfg |= (EXYNOS_CIGCTRL_SWRST); |