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2015-06-18Merge tag 'drm/tegra/for-4.2-rc1' of ↵Dave Airlie
git://anongit.freedesktop.org/tegra/linux into drm-next drm/tegra: Changes for v4.2-rc1 This contains a couple of mostly fixes for issues that have crept up in recent versions of linux-next. One issue is that DP AUX transactions of more than 4 bytes will access the wrong FIFO registers and hence become corrupt. Another fix is required to restore functionality of Tegra20 if using the GART. The current code expects the IOMMU aperture to be the complete 4 GiB address space, whereas the GART on Tegra20 only provides a 128 MiB aperture. One more issue with IOMMU support is that on 64-bit ARM, swiotlb is the default IOMMU implementation backing the DMA API. A side-effect of that is that when dma_map_sg() is called to flush caches (yes, this is a bit of a hack, but ARM does not provide a better API), swiotlb will immediately run out of memory because its bounce buffer is too small to make a framebuffer. Finally I've included a mostly cosmetic fix that stores register values in u32 rather than unsigned long to avoid sign-extension issues on 64- bit ARM. This is only a precaution since it hasn't caused any issues (yet). * tag 'drm/tegra/for-4.2-rc1' of git://anongit.freedesktop.org/tegra/linux: drm/tegra: dpaux: Registers are 32-bit drm/tegra: gem: Flush pages after allocation drm/tegra: gem: Take into account IOMMU aperture drm/tegra: dpaux: Fix transfers larger than 4 bytes
2015-06-18Merge branch 'drm/next/du' of git://linuxtv.org/pinchartl/fbdev into drm-nextDave Airlie
rcar-du fixes * 'drm/next/du' of git://linuxtv.org/pinchartl/fbdev: drm: rcar-du: Use the drm atomic state duplication helpers for planes drm: rcar-du: Clean up planes in the error paths of .atomic_commit() drm: rcar-du: Convert rcar_du_encoders_init_one() return value to 0/<0 drm: rcar-du: Clarify error message when encoder initialization fails drm: rcar-du: Fix crash with groups that have less than 9 planes drm: rcar-du: Disable all planes when stopping the CRTC drm: rcar-du: Print the error value when DRM/KMS init fails
2015-06-18Merge tag 'drm-amdkfd-next-fixes-2015-06-16' of ↵Dave Airlie
git://people.freedesktop.org/~gabbayo/linux into drm-next - Dan fixed some range checks in the address watch ioctl impl. - Remove obsolete member from radeon_device structure * tag 'drm-amdkfd-next-fixes-2015-06-16' of git://people.freedesktop.org/~gabbayo/linux: drm/amdkfd: fix some range checks in address watch ioctl drm/radeon: remove obsolete kfd_bo from radeon_device
2015-06-16drm/amdkfd: fix some range checks in address watch ioctlDan Carpenter
buf_size_in_bytes must be large enough to hold ->num_watch_points and watch_mode so I have added a sizeof(int) * 2 to the minimum size. Also we have to subtract sizeof(*args) from the max args_idx limit so that it matches the allocation. Also I changed a > to >= for the last compare. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2015-06-16drm: rcar-du: Use the drm atomic state duplication helpers for planesLaurent Pinchart
Ensure that the duplicate and destroy plane state operations will always be in sync with the DRM core implementation of the plane state by using the __drm_atomic_helper_plane_duplicate_state() and __drm_atomic_helper_plane_destroy_state() functions designed especially for this purpose. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-16drm: rcar-du: Clean up planes in the error paths of .atomic_commit()Laurent Pinchart
When the .atomic_commit() handler fails, clean up planes previoulsy prepared by drm_atomic_helper_prepare_planes() with a call to drm_atomic_helper_cleanup_planes(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-16drm: rcar-du: Convert rcar_du_encoders_init_one() return value to 0/<0Laurent Pinchart
The function returns 1 on success, and either 0 or a negative error code on failure. As the 0 and negative values don't need to be differentiated by the caller, convert it to the usual scheme of returning 0 on success and a negative error code on failure. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2015-06-16drm: rcar-du: Clarify error message when encoder initialization failsLaurent Pinchart
A failure to initialize an encoder currently prints an error message in the kernel log without mentioning which encoder failed to initialize. To help debugging initialization issues print the encoder DT node name. This requires moving the error message to the rcar_du_encoders_init_one function and refactoring it slightly. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2015-06-16drm: rcar-du: Fix crash with groups that have less than 9 planesLaurent Pinchart
Commit 917de180379d ("drm: rcar-du: Implement universal plane support") made the number of planes per group dynamic, but didn't update all loops over the planes array, resulting in out-of-bound accesses on DU instances that have an odd number of CRTCs (such as the R8A7790). Fix it. Fixes: 917de180379d ("drm: rcar-du: Implement universal plane support") Cc: stable@vger.kernel.org Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2015-06-16drm: rcar-du: Disable all planes when stopping the CRTCLaurent Pinchart
The DSnPR plane configuration registers are updated on vblank, and no vblank will occur once the CRTC is stopped. We thus can't only disable planes right before starting the CRTC as it would start scanning out immediately from old frame buffers until the next vblank. Fix the problem by disabling all planes when stopping the CRTC and wait for the change to take effect. This increases the CRTC stop delay, especially when multiple CRTCs are stopped in one operation as we now wait for one vblank per CRTC. Whether this can be improved needs to be researched. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2015-06-16drm: rcar-du: Print the error value when DRM/KMS init failsLaurent Pinchart
This helps debugging probe failures. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2015-06-16drm/radeon: remove obsolete kfd_bo from radeon_deviceOded Gabbay
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2015-06-16Merge tag 'omapdrm-4.2-atomic' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next omapdrm atomic modesetting support Atomic modesetting support for omapdrm. " we've had issues with omapdrm for years, which we've not been able to fix properly (like warnings/crashes when unloading modules, page-flips tearing, race issues with fbs). All those problems seem to be gone after this rewrite of omapdrm for atomic modesetting, and the resulting code is much cleaner and more maintainable." * tag 'omapdrm-4.2-atomic' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (43 commits) drm: omapdrm: new vblank and event handling drm: omapdrm: merge omap_crtc_flush and omap_crtc_atomic_flush drm: omapdrm: add lock for fb pinning drm: omapdrm: if omap_plane_atomic_update fails, disable plane drm: omapdrm: inline omap_plane_setup into update/disable drm: omapdrm: omap_plane_setup() cannot fail, use WARN drm: omapdrm: Don't setup planes manually from CRTC .enable()/.disable() drm: omapdrm: Don't flush CRTC when enabling or disabling it drm: omapdrm: Move encoder setup to encoder operations drm: omapdrm: Simplify DSS power management drm: omapdrm: Remove nested PM get/sync when configuring encoders drm: omapdrm: Support unlinking page flip events prematurely drm: omapdrm: omap_crtc_flush() isn't called with modeset locked drm: omapdrm: Don't get/put dispc in omap_crtc_flush() drm: omapdrm: Make the omap_crtc_flush function static drm: omapdrm: Remove omap_plane enabled field drm: omapdrm: Remove omap_crtc enabled field drm: omapdrm: Move crtc info out of the crtc structure drm: omapdrm: Move plane info and win out of the plane structure drm: omapdrm: Switch crtc and plane set_property to atomic helpers ...
2015-06-12drm: omapdrm: new vblank and event handlingTomi Valkeinen
Rework the crtc event/flip_wait system as follows: - If we enable a crtc (full modeset), we set omap_crtc->pending and register vblank irq. - If we need to set GO bit (page flip), we do the same but also set the GO bit. - On vblank we unregister the irq, clear the 'pending' flag, send vblank event to userspace if crtc->state->event != NULL, and wake up 'pending_wait' wq. - In omap_atomic_complete() we wait for the 'pending' flag to get reset for all enabled crtcs using 'pending_wait' wq. The above ensures that we send the events to userspace in vblank, and that after the wait in omap_atomic_complete() everything for the affected crtcs has been completed. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: merge omap_crtc_flush and omap_crtc_atomic_flushTomi Valkeinen
omap_crtc_atomic_flush() is the only user of omap_crtc_flush(), so just move the code from omap_crtc_flush() to omap_crtc_atomic_flush(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: add lock for fb pinningTomi Valkeinen
Before atomic modesetting omap_framebuffer_pin() and omap_framebuffer_unpin() were always called with modesetting locks taken. With atomic modesetting support this is no longer the case, and we need locking to protect the pin_count and the paddr, as multiple threads may pin the same fb concurrently. This patch adds a mutex to struct omap_framebuffer, and uses it in omap_framebuffer_pin() and omap_framebuffer_unpin(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: if omap_plane_atomic_update fails, disable planeTomi Valkeinen
omap_plane_atomic_update() calls dispc_ovl_setup(), which can fail (but shouldn't). To make the code a bit more robust, make sure the plane gets disabled if dispc_ovl_setup() fails, as otherwise we might get illegal HW configuration leading to error interrupts. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: inline omap_plane_setup into update/disableTomi Valkeinen
At the moment we have omap_plane_setup() function which handles both enabling (and configuring) and disabling the plane. With atomic modesetting we have separate hooks for plane enable/config and disable. This patch moves the code from omap_plane_setup() to omap_plane_atomic_update() and omap_plane_atomic_disable(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: omap_plane_setup() cannot fail, use WARNTomi Valkeinen
With atomic modesetting, omap_plane_setup()'s return value is ignored as the functions using it cannot fail. dispc_ovl_setup(), called by omap_plane_setup(), can fail (but shouldn't). Instead of returning an error from omap_plane_setup() which gets ignored, return void and use WARN if dispc_ovl_setup() fails. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-06-12drm: omapdrm: Don't setup planes manually from CRTC .enable()/.disable()Laurent Pinchart
Planes setup is handled by the DRM core through the atomic helpers, there's no need to duplicate the code in the CRTC .enable() and .disable() operations. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Don't flush CRTC when enabling or disabling itLaurent Pinchart
The omap_crtc_flush() call in omap_crtc_enable() and omap_crtc_disable() is a no-op, as the display manager is always disabled at this point. Just remove the function call. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Move encoder setup to encoder operationsLaurent Pinchart
Now that the driver is fully converted to atomic operations, and that the atomic helpers call the operations in the right order, we can move encoder setup to where it belongs, in the encoder operations. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Simplify DSS power managementLaurent Pinchart
Instead of sprinkling dispc_runtime_get() and dispc_runtime_put() calls in various CRTC operations, move all power management code to the atomic commit function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Remove nested PM get/sync when configuring encodersLaurent Pinchart
The omap_crtc_encoder_setup() function is always called with the DSS enabled. Remove the dispc_runtime_get() and dispc_runtime_put() calls. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Support unlinking page flip events prematurelyLaurent Pinchart
DRM page flip vblank events requested by page flips or atomic commits are created by the DRM core and then passed to driver through CRTC states (for atomic commit) or directly to the page flip handler (for legacy page flips). The events are then kept aside until the page flip completes, at which point drivers queue them for delivery with a call to drm_send_vblank_event(). When a DRM file handle is closed events pending for delivery are cleaned up automatically by the DRM core. Events that have been passed to the driver but haven't completed yet, however, are not handled by the DRM core. Drivers are responsible for destroying them and must not attempt to queue them for delivery. This is usually handled by drivers' preclose() handlers that cancel and destroy page flip events that reference the file handle being closed. With asynchronous atomic updates the story becomes more complex. Several asynchronous atomic updates can be pending, each of them carrying per-CRTC events. As the atomic_commit() operation doesn't receive a file handle context, drivers can't know which file handle a pending update refers to, making it difficult to cancel or wait for completion of updates related to the file handle being closed. It should be noted that cancelling page flips or waiting for atomic updates completion isn't required by the DRM core when closing a file handle. The only requirement is that no event gets queued for delivery after the preclose() operation returns. This can easily be achieved by storing events for atomic commits in a list, unlinking events from the file handle being closed by setting the file_priv field to NULL, and skipping delivery of unlinked events. This logic replaces the page flip cancellation completely. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: omap_crtc_flush() isn't called with modeset lockedLaurent Pinchart
When performing asynchronous atomic updates the modeset lock isn't taken around the callers of omap_crtc_flush(). This isn't an issue though, as access to the CRTC is properly serialized. Just drop the warning. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Don't get/put dispc in omap_crtc_flush()Laurent Pinchart
The omap_crtc_flush() function is always called with a reference to the dispc held. Remove unnecessary calls to dispc_runtime_get() and dispc_runtime_put(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Make the omap_crtc_flush function staticLaurent Pinchart
The function isn't used outside of its compilation unit, make it static. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Remove omap_plane enabled fieldLaurent Pinchart
The field tracks the plane state to avoid double-enable or -disable. This isn't required anymore, as - the DRM atomic core guarantees that the plane atomic_update and atomic_disable functions will never be called on an enabled/disabled plane - the CRTC enable/disable operations that enable/disable the plane are already guarded against double enable/disable We can thus remove the enabled field completely. The omap_plane_set_enable() function then becomes a wrapper around omap_plane_setup() which can be called directly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Remove omap_crtc enabled fieldLaurent Pinchart
The field tracks the CRTC state to avoid double-enable or -disable. As the DRM atomic core guarantees that the CRTC enable and disable functions won't be called on an already enabled or disabled CRTC, such tracking isn't needed. Remove the enabled field. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Move crtc info out of the crtc structureLaurent Pinchart
The crtc info structure is only used to setup the crtc through the DSS API. Move it from the crtc structure to local variables in omap_crtc_dss_enable(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Move plane info and win out of the plane structureLaurent Pinchart
The plane info and win structures are only used to setup the plane through the DSS API. Move them from the plane structure to local variables in omap_plane_setup(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Switch crtc and plane set_property to atomic helpersLaurent Pinchart
Allow setting up plane properties atomically using the plane set_property atomic helper. The properties are now stored in the plane state (requiring subclassing it) and applied when updating the planes. The CRTC exposes the properties of its primary plane for legacy reason. We can't get rid of that API, so simply delegate it to the primary plane. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Drop manual framebuffer pin handlingLaurent Pinchart
Since the removal of omap_plane_mode_set(), framebuffers are now pinned exclusively through the plane .prepare_fb() and .cleanup_fb() operations as the remaining callers of omap_plane_setup() don't modify the framebuffer. Remove the manual pin/unpin infrastructure. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Switch page flip to atomic helpersLaurent Pinchart
The atomic page flip helper implements the page flip operation using asynchronous commits. As the legacy page flip was the last caller of omap_plane_mode_set(), remove the function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Implement asynchronous commit supportLaurent Pinchart
Implement a custom .atomic_commit() handler that supports asynchronous commits using a work queue. This can be used for userspace-driven asynchronous commits, as well as for an atomic page flip implementation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Replace encoder mode_fixup with atomic_checkLaurent Pinchart
The encoder .mode_fixup() operation is legacy, atomic updates uses the new .atomic_check() operation. Convert the encoder driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Switch connector DPMS to atomic helpersLaurent Pinchart
The atomic connector DPMS helper implements the connector DPMS operation using atomic commit, removing the need for DPMS helper operations on CRTCs and encoders. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Switch mode config to atomic helpersLaurent Pinchart
This removes the legacy mode config code. The CRTC and encoder prepare and commit operations are not used anymore, remove them. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Switch plane update to atomic helpersLaurent Pinchart
This removes the legacy plane update code. Wire up the default atomic check and atomic commit mode config helpers as needed by the plane update atomic helpers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Handle primary plane config through atomic plane opsLaurent Pinchart
Use the new CRTC atomic transitional helpers drm_helper_crtc_mode_set() and drm_helper_crtc_mode_set_base() to implement the CRTC .mode_set and .mode_set_base operations. This delegates primary plane configuration to the plane .atomic_update and .atomic_disable operations, removing duplicate code from the CRTC implementation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Implement planes atomic operationsLaurent Pinchart
Implement the CRTC .atomic_begin() and .atomic_flush() operations, the plane .atomic_check(), .atomic_update() and operations, and use the transitional atomic helpers to implement the plane update and disable operations on top of the new atomic operations. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Wire up atomic state object scaffoldingLaurent Pinchart
Hook up the default .reset(), .atomic_duplicate_state() and .atomic_free_state() helpers to ensure that state objects are properly created and destroyed, and call drm_mode_config_reset() at init time to create the initial state objects. Framebuffer reference count also gets maintained automatically by the transitional helpers except for the legacy page flip operation. Maintain it explicitly there. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Implement encoder .disable() and .enable() operationsLaurent Pinchart
The operations are required by the atomic helpers, implement them. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Rework CRTC enable/disable for atomic updatesLaurent Pinchart
When using atomic updates the CRTC .enable() and .disable() helper operations are preferred over the (then legacy) .prepare() and .commit() operations. Implement .enable() and rework .disable() to not depend on DPMS, easing DPMS removal later on. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Rename CRTC DSS operations with an omap_crtc_dss_ prefixLaurent Pinchart
The omap_crtc_enable() and omap_crtc_disable() DSS operations functions will clash with the new CRTC enable and disable helpers. Rename them to omap_crtc_dss_*, as well as the other DSS operations for consistency. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Clean up #include'sLaurent Pinchart
Use the <...> include style instead of "..." for DRM headers and sort the headers alphabetically to ease detection of duplicates. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Fix page flip race with CRTC disableLaurent Pinchart
We can't rely on crtc->primary->fb in the page flip worker, as a racing CRTC disable (due for instance to an explicit framebuffer deletion from userspace) would set that field to NULL before the worker gets a change to run. Store the framebuffer queued for page flip in a new field of omap_crtc instead, and hold a reference to it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Turn vblank on/off when enabling/disabling CRTCLaurent Pinchart
The DRM core vblank handling mechanism requires drivers to forcefully turn vblank reporting off when disabling the CRTC, and to restore the vblank reporting status when enabling the CRTC. Implement this using the drm_crtc_vblank_on/off helpers. When disabling vblank we must first wait for page flips to complete, so implement page flip completion wait as well. Finally, drm_crtc_vblank_off() must be called at startup to synchronize the state of the vblank core code with the hardware, which is initially disabled. An interesting side effect is that the .disable_vblank() operation will now be called for the first time with the CRTC disabled and the DISPC runtime suspended. The dispc_runtime_get() call in .disable_vblank() is supposed to take care of that, but the operation is called with a spinlock held, which prevents it from sleeping. To fix that move DISPC runtime PM handling out of the vblank operations to the CRTC code, ensuring that the display controller will always be powered when enabling or disabling vblank interrupts. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-12drm: omapdrm: Rework page flip handlingLaurent Pinchart
To implement proper vblank control the driver will need to wait for page flip completion before disabling the vblank interrupt. This is made complex by the page flip implementation which queues and submits page flips to the hardware in two separate steps between which DRM locks are released. We thus need to avoid waiting on a page flip that has been queued but not submitted as submission and wait are covered by the same lock. Rework page flip handling as a first step by splitting the flip_pending boolean variable into an enumerated state and moving between states based on flip queue, submission and completion. The CANCELLED state will be used in a second step. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>