- 29 Apr, 2016 10 commits
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Andrzej Hajda authored
With incoming support for newer SoCs different set of clocks will be required, depending on IP version. The patch prepares the driver for it. Signed-off-by:
Andrzej Hajda <a.hajda@samsung.com> Signed-off-by:
Inki Dae <inki.dae@samsung.com>
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Javier Martinez Canillas authored
Commit 254d4d11 ("drm/exynos: Add dependency for G2D in Kconfig") made the DRM_EXYNOS_G2D symbol to only be selectable if the s5p-g2d V4L2 driver is not enabled, since both use the same HW IP block. But added the dependency as depends on !VIDEO_SAMSUNG_S5P_G2D which isn't correct since Kconfig expressions are not boolean but tristate. So it will only evaluate to 'n' if VIDEO_SAMSUNG_S5P_G2D=y but it will evaluate to m if VIDEO_SAMSUNG_S5P_G2D=m. This means that both the V4L2 and DRM drivers can be enabled if the former is enabled as a module, which is not what we want. Signed-off-by:
Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by:
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Dan Carpenter authored
The "ret = regmap_write()" assignment was missing so this error message is never printed. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Dan Carpenter authored
We accidentally return success instead of a negative error code here. Signed-off-by:
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Marek Szyprowski authored
Commit 1feafd3a ("drm/exynos: add exynos5420 support for fimd") add support for Exynos 5420 SoC, but it broke enabling display clock feature because of incorrect condition check. This patch fixes it, so display is working again on platforms requiring display clock control (i.e. Exynos5250-based SNOW platform). Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by:
Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by:
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Andrzej Hajda authored
Fbdev code should be compiled only if CONFIG_DRM_FBDEV_EMULATION option is enabled. The patch fixes exynos-drm code trying to manipulate fbdev data which is not initialized in case CONFIG_DRM_FBDEV_EMULATION is disabled. Signed-off-by:
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Andrzej Hajda authored
exynos_plane_mode_set should use adjusted_mode from the same atomic state as plane state. Otherwise it will result in incorrect behavior in case crtc mode changes. The patch fixes bug with black console framebuffer in case of command mode panels. Signed-off-by:
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Arnd Bergmann authored
gcc-6 warns about a pointless loop in exynos_drm_subdrv_open: drivers/gpu/drm/exynos/exynos_drm_core.c: In function 'exynos_drm_subdrv_open': drivers/gpu/drm/exynos/exynos_drm_core.c:104:199: error: self-comparison always evaluates to false [-Werror=tautological-compare] list_for_each_entry_reverse(subdrv, &subdrv->list, list) { Here, the list_for_each_entry_reverse immediately terminates because the subdrv pointer is compared to itself as the loop end condition. If we were to take the current subdrv pointer as the start of the list (as we would do if list_for_each_entry_reverse() was not a macro), we would iterate backwards over the &exynos_drm_subdrv_list anchor, which would be even worse. Instead, we need to use list_for_each_entry_continue_reverse() to go back over each subdrv that was successfully opened until the first entry. Signed-off-by:Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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http://git.agner.ch/git/linux-drm-fsl-dcuDave Airlie authored
This adds very rudimentary TCON (timing controller for raw LCD displays) support to enable the bypass mode in order to use the DCU controller on Freescale/NXP Vybrid SoC's. Additionally the register clock and pixel clock has been separated, but are currently still enabled and disabled pairwise. Other than that, fixes and cleanups accross the driver. * 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu: drm/fsl-dcu: increment version and date drm/fsl-dcu: implement lastclose callback drm/fsl-dcu: disable output polling on driver unload drm/fsl-dcu: deallocate fbdev CMA on unload drm/fsl-dcu: use variable name dev for struct drm_device drm/fsl-dcu: handle missing panel gracefully drm/fsl-dcu: detach panel on destroy drm/layerscape: reduce excessive stack usage drm/fsl-dcu: add TCON driver drm/fsl-dcu: use common clock framework for pixel clock divider drm/fsl-dcu: add extra clock for pixel clock drm/fsl-dcu: disable clock on initialization failure and remove
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Dave Airlie authored
Merge tag 'sun4i-drm-for-4.7' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next Allwinner DRM driver for 4.7 This pull request introduces the sun4i driver, meant to be used on the older Allwinner SoCs (A10, A13, A20, A23, A31 and A33). It currently supports only the A13, which has one of the simplest video pipeline. Support for other video components and SoCs will be added eventually. It supports only a RGB or composite output. It doesn't do HDMI, VGA, LVDS or power management yet, but that will come in time as well. * tag 'sun4i-drm-for-4.7' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: MAINTAINERS: Add a maintainer for the Allwinner DRM driver drm: sun4i: tv: Add NTSC output standard drm: sun4i: tv: Add PAL output standard drm: sun4i: Add composite output drm: sun4i: Add RGB output drm: Add Allwinner A10 Display Engine support drm: sun4i: Add DT bindings documentation drm: fb: Add seq_file definition
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- 28 Apr, 2016 8 commits
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Maxime Ripard authored
Add myself as the maintainer of the new Allwinner DRM driver. Signed-off-by:Maxime Ripard <maxime.ripard@free-electrons.com>
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Maxime Ripard authored
Add the settings to support the NTSC standard. Reviewed-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
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Maxime Ripard authored
Now that we have support for the composite output, we can start adding new supported standards. Start with PAL, and we will add other eventually. Reviewed-by:
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Maxime Ripard authored
Some Allwinner SoCs have an IP called the TV encoder that is used to output composite and VGA signals. In such a case, we need to use the second TCON channel. Add support for that TV encoder. Reviewed-by:
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Maxime Ripard authored
One of the A10 display pipeline possible output is an RGB interface to drive LCD panels directly. This is done through the first channel of the TCON that will output our video signals directly. Reviewed-by:
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Maxime Ripard authored
The Allwinner A10 and subsequent SoCs share the same display pipeline, with variations in the number of controllers (1 or 2), or the presence or not of some output (HDMI, TV, VGA) or not. Add a driver with a limited set of features for now, and we will hopefully support all of them eventually Reviewed-by:
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Maxime Ripard authored
The display pipeline of the Allwinner A10 is involving several loosely coupled components. Add a documentation for the bindings. Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Maxime Ripard authored
Otherwise, building with DEBUG_FS enabled will trigger a build warning because we're using a structure that has not been declared. Signed-off-by:
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- 26 Apr, 2016 22 commits
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Daniel Vetter authored
Need to move the free function around a bit, but otherwise mostly just removing code. Specifically we can nuke all the _locked variants since the weak idr reference is now protected by the idr_mutex, which we never hold anywhere expect in the lookup/reg/unreg functions. And those never call anything else. Another benefit of this is that this patch switches the weak reference logic from kref_put_mutex to kref_get_unless_zero. And the later is in general more flexible wrt accomodating multiple weak references protected by different locks, which might or might not come handy eventually. But one consequence of that switch is that we need to acquire the blob_lock from the free function for the list_del calls. That's a bit tricky to pull off, but works well if we pick the exact same scheme as is already used for framebuffers. Most important changes: - filp list is maintainer by create/destroy_blob ioctls directly (already the case, so we can just remove the redundant list_del from the free function). - filp close handler walks the filp-private list lockless - works because we know no one else can access it. I copied the same comment from the fb code over to explain this. - Otherwise we need to sufficiently restrict blob_lock critical sections to avoid all the unreference calls. Easy to do once the blob_lock only protects the list, and no longer the weak reference. Cc: Dave Airlie <airlied@gmail.com> Cc: Daniel Stone <daniels@collabora.com> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
Dave Airlie <airlied@redhat.com>
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Daniel Vetter authored
Random drive-by refactoring I spotted. Signed-off-by:
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Daniel Vetter authored
Dave Airlie had at least the refcount leak fixed in a later patch (but that patch does other things which need a bit more work). But we still have the trouble that silly userspace could hit the WARN_ON in drm_mode_object_find. Fix this all up to make sure we don't leak objects, and don't spew into demsg. Fixes: d0f37cf6 ("drm/mode: move framebuffer reference into object.") Testcase: igt/kms_addfb_basic/invalid-*-prop* Cc: Dave Airlie <airlied@gmail.com> Signed-off-by:
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Daniel Vetter authored
Slipped through the cracks in my review. The one issue I spotted is that drm_mode_object_find now acquires references and can be used on FB objects, which caused follow-on bugs in get/set_prop ioctls. Follow-up patches will fix that. [airlied: fixup some incr fb/decr object mixups] Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Dave Airlie authored
Merge branch 'topic-arcpgu-v6' of https://github.com/foss-for-synopsys-dwc-arc-processors/linux into drm-next This is DRM driver for ARC PGU - simple bitstreamer used on Synopsys ARC SDP boards (both AXS101 and AXS103). * 'topic-arcpgu-v6' of https://github.com/foss-for-synopsys-dwc-arc-processors/linux: arc: axs10x - add support of ARC PGU MAINTAINERS: Add maintainer for ARC PGU display controller drm: Add DT bindings documentation for ARC PGU display controller drm: Add support of ARC PGU display controller
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Emil Velikov authored
Signed-off-by:
Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by:
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Emil Velikov authored
One cannot rename the struct at this point, so might as well remove the comment. Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Signed-off-by:
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git://linuxtv.org/pinchartl/fbdevDave Airlie authored
misc rcar changes. * 'drm/next/du' of git://linuxtv.org/pinchartl/fbdev: drm: rcar-du: Fix compilation warning drm: rcar-du: Use ARCH_RENESAS drm: rcar-du: Clarify vsp dependency
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Alexey Brodkin authored
Synopsys DesignWare ARC SDP boards sport ARC SDP display controller attached to ADV7511 HDMI encoder. That change adds desctiption of both ARC PGU and ADV7511 in ARC SDP'd base-board Device Tree. Signed-off-by:Alexey Brodkin <abrodkin@synopsys.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: devicetree@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org
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Alexey Brodkin authored
This updates MAINTEINERS file with information about maintainer of ARC PGU display controller driver. Signed-off-by: -
Alexey Brodkin authored
This add DT bindings documentation for ARC PGU display controller. Signed-off-by:
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Carlos Palminha authored
ARC PGU could be found on some development boards from Synopsys. This is a simple byte streamer that reads data from a framebuffer and sends data to the single encoder. Signed-off-by:
Carlos Palminha <palminha@synopsys.com> Signed-off-by:
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Stefan Agner authored
The driver supports now a second platform and received several fixes, hence a version increment is justified. Signed-off-by:Stefan Agner <stefan@agner.ch>
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Stefan Agner authored
Use CMA helper drm_fbdev_cma_restore_mode to restore fbdev mode in process which uses drm/kms dies. Signed-off-by: -
Stefan Agner authored
Disabling output polling before unloading the driver. Signed-off-by: -
Stefan Agner authored
Free fbdev CMA using drm_fbdev_cma_fini on unload. This fixes a warning when unloading the driver: WARNING: CPU: 0 PID: 164 at drivers/gpu/drm/drm_crtc.c:5930 drm_mode_config_cleanup+0x204/0x208 Signed-off-by: -
Stefan Agner authored
The driver uses different variable names for struct drm_device across functions which is confusing. Stick to the more common variable name dev. While at it, remove unnecessary if statement in error handling. Signed-off-by: -
Stefan Agner authored
If the device tree property fsl,panel is missing, drm_panel_attach is called with a NULL pointer as first argument. Having a panel is basically mandatory since RGB is the only supported connector. Check if a panel node has been found, return -ENODEV and cleanup otherwise. Signed-off-by: -
Stefan Agner authored
Disable the earlier attached panel on connector destroy. Signed-off-by: -
Arnd Bergmann authored
The fsl-dcu driver copies a drm_mode_config object to its stack but then only accesses a single member (dpms_property) once. The data structure is large enough to trigger a warning about the amount of kernel stack being used: drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c: In function 'fsl_dcu_drm_connector_create': drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c:182:1: error: the frame size of 1040 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] This changes the fsl_dcu_drm_connector_create() function to only access the drm_mode_config by reference, which is also more efficient. Signed-off-by:
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Stefan Agner authored
Add driver for the TCON (timing controller) module. The TCON module is a separate module attached after the DCU (display controller unit). Each DCU instance has its own, directly connected TCON instance. The DCU's RGB and timing signals are passing through the TCON module. TCON can provide timing signals for raw TFT panels or operate in a bypass mode which leaves all signals unaltered. The driver currently only supports the bypass mode. Acked-by:
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Stefan Agner authored
Use the common clock framework to calculate the pixel clock dividier. The previous implementation rounded down the calculated factor. Thanks to the CLK_DIVIDER_ROUND_CLOSEST flag using the common clock framework divider implementation improves the pixel clock accuracy in some cases. Ontop of that it also allows to see the actual pixel clock in the sysfs clock summary. Signed-off-by:
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