[PATCH 5/7] [media] exynos-gsc: Fixup system PM

We had several issues with the system PM support. 1) It were depending on CONFIG_PM_RUNTIME. 2) It unnecessarily tracked the suspend state in a flag. 3) If userspace through sysfs prevents runtime PM operations, could cause the device to stay in low power after a system PM resume, which is not

[PATCH 7/7] [media] exynos-gsc: Do full clock gating at runtime PM suspend

To potentially save more power in runtime PM suspend state, let's also prepare/unprepare the clock from the runtime PM callbacks. Signed-off-by: Ulf Hansson ulf.hans...@linaro.org --- drivers/media/platform/exynos-gsc/gsc-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff

[PATCH 0/7] [media] exynos-gsc: Fixup PM support

This patchset fixup the PM support and adds some minor improvements to potentially save some more power at runtime PM suspend. Some background to this patchset, which are related to the generic PM domain: http://marc.info/?l=linux-pmm=141217452218592w=2 http://marc.info/?t=141217462200011r=1w=2

[PATCH 4/7] [media] exynos-gsc: Make runtime PM callbacks available for CONFIG_PM

There are no need to set up the runtime PM callbacks unless they are being used. Let's make them available for CONFIG_PM. Signed-off-by: Ulf Hansson ulf.hans...@linaro.org --- drivers/media/platform/exynos-gsc/gsc-core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git

[PATCH 1/7] [media] exynos-gsc: Simplify clock management

Instead of having separate functions that fecthes, prepares and unprepares the clock, let's encapsulate this code into -probe(). This makes error handling easier and decreases the lines of code. Signed-off-by: Ulf Hansson ulf.hans...@linaro.org --- drivers/media/platform/exynos-gsc/gsc-core.c |

[PATCH 6/7] [media] exynos-gsc: Fixup clock management at -remove()

We want to make sure that the clock is fully gated after -remove(). To do this, we need to bring the device into full power and not only unprepare the clock, but also disable it. Signed-off-by: Ulf Hansson ulf.hans...@linaro.org --- drivers/media/platform/exynos-gsc/gsc-core.c | 7 +-- 1

[PATCH 3/7] [media] exynos-gsc: Make driver functional without CONFIG_PM_RUNTIME

The driver depended on CONFIG_PM_RUNTIME to be functional, which isn't necessary. The solution to the above is to enable all runtime PM resourses during probe and update the device's runtime PM status to active. Since driver core invokes pm_request_idle() after -probe(), unused gsc devices will

[PATCH 2/7] [media] exynos-gsc: Convert gsc_m2m_resume() from int to void

Since gsc_m2m_resume() always returns 0, convert it into void instead. Signed-off-by: Ulf Hansson ulf.hans...@linaro.org --- drivers/media/platform/exynos-gsc/gsc-core.c | 7 +++ 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c

[GIT PULL 1/2] Samsung fixes for v3.18

The following changes since commit 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9: Linux 3.17-rc1 (2014-08-16 10:40:26 -0600) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung.git tags/samsung-fixes for you to fetch changes up to

[GIT PULL 2/2] Samsung defconfig updates for v3.18

The following changes since commit 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9: Linux 3.17-rc1 (2014-08-16 10:40:26 -0600) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung.git tags/samsung-defconfig for you to fetch changes up to

Re: [PATCH] drm/exynos: fix vblank handling during dpms off

On 2014년 10월 10일 21:39, Andrzej Hajda wrote: On 10/02/2014 12:52 PM, Inki Dae wrote: On 2014년 10월 02일 17:58, Joonyoung Shim wrote: Hi Andrzej, On 10/01/2014 05:14 PM, Andrzej Hajda wrote: The patch disables vblanks during dpms off only if pagefilp has not been finished. It also replaces