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| author |   Shirish S <s.shirish@samsung.com> | 2013-01-23 22:03:18 -0500 |
|---|---|---|
| committer |   Inki Dae <inki.dae@samsung.com> | 2013-01-25 14:38:46 +0900 |
| commit | dda9012b2ad98f0ed124ea1f44b82f8b2288f697 (patch) | |
| tree | 589dd10b71dc55312474e53dd72b3f2c66b27ce7 /drivers/gpu | |
| parent | drm/exynos: Make 'drm_hdmi_get_edid' static (diff) | |
| download | linux-dev-dda9012b2ad98f0ed124ea1f44b82f8b2288f697.tar.xz linux-dev-dda9012b2ad98f0ed124ea1f44b82f8b2288f697.zip | |
drm/exynos: add check for the device power status
V2: Add mutex protection, while read.
The hdmi and mixer win_commit calls currently are
not checking the status of IP before updating the
respective registers, this patch adds this check.
Signed-off-by: Shirish S <s.shirish@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_mixer.c | 7 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 32c04a696a59..fbab3c468603 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -2163,6 +2163,13 @@ static void hdmi_commit(void *ctx) DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + mutex_lock(&hdata->hdmi_mutex); + if (!hdata->powered) { + mutex_unlock(&hdata->hdmi_mutex); + return; + } + mutex_unlock(&hdata->hdmi_mutex); + hdmi_conf_apply(hdata); } diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 1ff2d7a045b5..c414584bfbae 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -776,6 +776,13 @@ static void mixer_win_commit(void *ctx, int win) DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win); + mutex_lock(&mixer_ctx->mixer_mutex); + if (!mixer_ctx->powered) { + mutex_unlock(&mixer_ctx->mixer_mutex); + return; + } + mutex_unlock(&mixer_ctx->mixer_mutex); + if (win > 1 && mixer_ctx->vp_enabled) vp_video_buffer(mixer_ctx, win); else |