linux.git/drivers/gpu, branch v4.14-rc2 Linux kernel source tree Merge tag 'exynos-drm-fixes-for-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes 2017-09-20T22:02:39+00:00 Dave Airlie airlied@redhat.com 2017-09-20T22:02:39+00:00 56eac98b8a0bbb72132340dbfedc912c68c4bd56 - fix suspend/resume issues. - fix memory corruption detected by kasan. - fix build error on x86. * tag 'exynos-drm-fixes-for-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm/exynos/hdmi: Fix unsafe list iteration drm: exynos: include linux/irq.h drm/exynos: Fix suspend/resume support drm/exynos: Fix locking in the suspend/resume paths 
- fix suspend/resume issues.
- fix memory corruption detected by kasan.
- fix build error on x86.

* tag 'exynos-drm-fixes-for-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos/hdmi: Fix unsafe list iteration
  drm: exynos: include linux/irq.h
  drm/exynos: Fix suspend/resume support
  drm/exynos: Fix locking in the suspend/resume paths
drm/exynos/hdmi: Fix unsafe list iteration 2017-09-20T03:05:23+00:00 Maciej Purski m.purski@samsung.com 2017-09-05T12:23:02+00:00 04fc52fb222d35e1f7a0d5d85b19a676ea1e10e8 Function hdmi_mode_fixup() used bare list_for_each entry, which was unsafe and caused memory corruption detected by kasan. It now uses drm_for_each_connector_iter macro, which is now recommended by the documentation and safe. Signed-off-by: Maciej Purski <m.purski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> 
Function hdmi_mode_fixup() used bare list_for_each entry, which was
unsafe and caused memory corruption detected by kasan.
It now uses drm_for_each_connector_iter macro, which is now recommended
by the documentation and safe.

Signed-off-by: Maciej Purski <m.purski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
drm: exynos: include linux/irq.h 2017-09-19T10:50:47+00:00 Arnd Bergmann arnd@arndb.de 2017-09-05T08:19:55+00:00 9ac30ef6d8ec3533d0feec53e268c4fa32ea700c I ran into a build error on x86: drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_conf_irq': drivers/gpu/drm/exynos/exynos5433_drm_decon.c:706:2: error: implicit declaration of function 'irq_set_status_flags'; did you mean 'dquot_state_flag'? [-Werror=implicit-function-declaration] irq_set_status_flags(irq, IRQ_NOAUTOEN); Adding the missing include fixes the error. Fixes: b37d53a0382c ("drm/exynos/decon5433: move TE handling to DECON") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Inki Dae <inki.dae@samsung.com> 
I ran into a build error on x86:

drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_conf_irq':
drivers/gpu/drm/exynos/exynos5433_drm_decon.c:706:2: error: implicit declaration of function 'irq_set_status_flags'; did you mean 'dquot_state_flag'? [-Werror=implicit-function-declaration]
  irq_set_status_flags(irq, IRQ_NOAUTOEN);

Adding the missing include fixes the error.

Fixes: b37d53a0382c ("drm/exynos/decon5433: move TE handling to DECON")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
drm/exynos: Fix suspend/resume support 2017-09-19T10:50:44+00:00 Marek Szyprowski m.szyprowski@samsung.com 2017-09-14T12:01:01+00:00 6e8edf8a7d8d98e1734ff41e5c69439419319402 Commit 7d902c05b480 ("drm: Nuke drm_atomic_helper_connector_dpms") removed drm_atomic_helper_connector_dpms() helper saying that it was a dead code. It was however indirectly used by Exynos DRM driver for implementing suspend/resume support. To fix this regression (after that patch Exynos DRM suspend/resume functions became no-ops and hardware fails to suspend), this patch rewrites them with drm_atomic_helper_suspend/resume() helpers. Fixes: 7d902c05b480 ("drm: Nuke drm_atomic_helper_connector_dpms") Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> 
Commit 7d902c05b480 ("drm: Nuke drm_atomic_helper_connector_dpms")
removed drm_atomic_helper_connector_dpms() helper saying that it was a dead
code. It was however indirectly used by Exynos DRM driver for implementing
suspend/resume support. To fix this regression (after that patch Exynos DRM
suspend/resume functions became no-ops and hardware fails to suspend),
this patch rewrites them with drm_atomic_helper_suspend/resume() helpers.

Fixes: 7d902c05b480 ("drm: Nuke drm_atomic_helper_connector_dpms")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
drm/exynos: Fix locking in the suspend/resume paths 2017-09-19T10:50:43+00:00 Marek Szyprowski m.szyprowski@samsung.com 2017-09-14T12:01:00+00:00 5baf6bb0fd2388742a0846cc7bcacee6dec78235 Commit 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()") replaced unsafe drm_for_each_connector() with drm_for_each_connector_iter() and removed surrounding drm_modeset_lock calls. However, that lock was there not only to protect unsafe drm_for_each_connector(), but it was also required to be held by the dpms code which was called from the loop body. This patch restores those drm_modeset_lock calls to fix broken suspend and resume of Exynos DRM subsystem in v4.13 kernel. Fixes: 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()") CC: stable@vger.kernel.org # v4.13 Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> 
Commit 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()")
replaced unsafe drm_for_each_connector() with drm_for_each_connector_iter()
and removed surrounding drm_modeset_lock calls. However, that lock was
there not only to protect unsafe drm_for_each_connector(), but it was also
required to be held by the dpms code which was called from the loop body.
This patch restores those drm_modeset_lock calls to fix broken suspend
and resume of Exynos DRM subsystem in v4.13 kernel.

Fixes: 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()")
CC: stable@vger.kernel.org # v4.13
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
drm/i915: Remove unused 'in_vbl' from i915_get_crtc_scanoutpos() 2017-09-18T22:22:37+00:00 Chris Wilson chris@chris-wilson.co.uk 2017-09-14T16:42:13+00:00 99df13b6ea811a63eeacb278d05a5b914ce28073 Commit 1bf6ad622b9b ("drm/vblank: drop the mode argument from drm_calc_vbltimestamp_from_scanoutpos") removed the use of in_vbl, but did not remove the local variable. Do so now. Fixes: 1bf6ad622b9b ("drm/vblank: drop the mode argument from drm_calc_vbltimestamp_from_scanoutpos") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170914164213.18461-1-chris@chris-wilson.co.uk Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (cherry picked from commit e01e71fc49d4c95090a04f898a3fe788c652a04b) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> 
Commit 1bf6ad622b9b ("drm/vblank: drop the mode argument from
drm_calc_vbltimestamp_from_scanoutpos") removed the use of in_vbl, but
did not remove the local variable. Do so now.

Fixes: 1bf6ad622b9b ("drm/vblank: drop the mode argument from drm_calc_vbltimestamp_from_scanoutpos")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170914164213.18461-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit e01e71fc49d4c95090a04f898a3fe788c652a04b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drm/i915/cnp: set min brightness from VBT 2017-09-18T22:22:33+00:00 Lee, Shawn C shawn.c.lee@intel.com 2017-09-13T05:19:20+00:00 8c7a758873577f0d1bb3f879584338f73e6c6bc3 Min brightness value from vbt was missing for CNP platform. This setting have to refer backlight ic spec to restrict min backlight output. Without this restriction, driver would allow to configure lower brightness value and violate backlight ic requirement. Fixes: 4c9f7086ac6d ("drm/i915/cnp: Backlight support for CNP.") Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Shawn Lee <shawn.c.lee@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1505279961-16140-1-git-send-email-shawn.c.lee@intel.com (cherry picked from commit f44e354f857f207cd361269c5e38e1f96e0b616c) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> 
Min brightness value from vbt was missing for CNP platform.
This setting have to refer backlight ic spec to restrict
min backlight output. Without this restriction, driver would
allow to configure lower brightness value and violate
backlight ic requirement.

Fixes: 4c9f7086ac6d ("drm/i915/cnp: Backlight support for CNP.")
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Shawn Lee <shawn.c.lee@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1505279961-16140-1-git-send-email-shawn.c.lee@intel.com
(cherry picked from commit f44e354f857f207cd361269c5e38e1f96e0b616c)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Revert "drm/i915/bxt: Disable device ready before shutdown command" 2017-09-18T22:22:29+00:00 Uma Shankar uma.shankar@intel.com 2017-09-05T09:44:31+00:00 abeae421b03d800d33894df7fbca6d00c70c358e This reverts commit bbdf0b2ff32a ("drm/i915/bxt: Disable device ready before shutdown command"). Disable device ready before shutdown command was added previously to avoid a split screen issue seen on dual link DSI panels. As of now, dual link is not supported and will need some rework in the upstream code. For single link DSI panels, the change is not required. This will cause failure in sending SHUTDOWN packet during disable. Hence reverting the change. Will handle the change as part of dual link enabling in upstream. Fixes: bbdf0b2ff32a ("drm/i915/bxt: Disable device ready before shutdown command") Cc: <stable@vger.kernel.org> # v4.12+ Signed-off-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1504604671-17237-1-git-send-email-vidya.srinivas@intel.com (cherry picked from commit 33c8d8870c67faf3161898a56af98ac3c1c71450) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> 
This reverts commit bbdf0b2ff32a ("drm/i915/bxt: Disable device ready
before shutdown command").

Disable device ready before shutdown command was added previously to
avoid a split screen issue seen on dual link DSI panels. As of now, dual
link is not supported and will need some rework in the upstream
code. For single link DSI panels, the change is not required. This will
cause failure in sending SHUTDOWN packet during disable. Hence reverting
the change. Will handle the change as part of dual link enabling in
upstream.

Fixes: bbdf0b2ff32a ("drm/i915/bxt: Disable device ready before shutdown command")
Cc: <stable@vger.kernel.org> # v4.12+
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1504604671-17237-1-git-send-email-vidya.srinivas@intel.com
(cherry picked from commit 33c8d8870c67faf3161898a56af98ac3c1c71450)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drm/i915/bxt: set min brightness from VBT 2017-09-18T22:22:25+00:00 Lee, Shawn C shawn.c.lee@intel.com 2017-09-12T03:36:30+00:00 ac73661c6222faef1a97ec44f424234f165e4710 Min brightness value from vbt was missing for BXT platform. This setting have to refer backlight ic spec to restrict min backlight output. Without this restriction, driver would allow to configure lower brightness value and violate backlight ic requirement. Fixes: 0fb890c01349 ("drm/i915/bxt: BLC implementation") Cc: Jani Nikula <jani.nikula@intel.com> Cc: Cooper Chiou <cooper.chiou@intel.com> Cc: Gary C Wang <gary.c.wang@intel.com> Signed-off-by: Shawn Lee <shawn.c.lee@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1505187390-7039-1-git-send-email-shawn.c.lee@intel.com (cherry picked from commit c3881128cb672cf484a52fbb36b5daa9044d9168) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> 
Min brightness value from vbt was missing for BXT platform.
This setting have to refer backlight ic spec to restrict
min backlight output. Without this restriction, driver would
allow to configure lower brightness value and violate
backlight ic requirement.

Fixes: 0fb890c01349 ("drm/i915/bxt: BLC implementation")
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Cc: Gary C Wang <gary.c.wang@intel.com>
Signed-off-by: Shawn Lee <shawn.c.lee@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1505187390-7039-1-git-send-email-shawn.c.lee@intel.com
(cherry picked from commit c3881128cb672cf484a52fbb36b5daa9044d9168)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drm/i915: Fix an error handling in 'intel_framebuffer_init()' 2017-09-18T22:22:20+00:00 Christophe JAILLET christophe.jaillet@wanadoo.fr 2017-09-10T08:56:42+00:00 814feed316e9d15b0ae869ca729370e7630b8d13 We should go through the error handling path to decrease the 'framebuffer_references' as done everywhere else in this function. Fixes: 2e2adb05736c ("drm/i915: Add render decompression support") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170910085642.13673-1-christophe.jaillet@wanadoo.fr (cherry picked from commit 37875d6b3af702425ce292de81b77faf94766616) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> 
We should go through the error handling path to decrease the
'framebuffer_references' as done everywhere else in this function.

Fixes: 2e2adb05736c ("drm/i915: Add render decompression support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170910085642.13673-1-christophe.jaillet@wanadoo.fr
(cherry picked from commit 37875d6b3af702425ce292de81b77faf94766616)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>