- 08 Jan, 2020 3 commits
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Boris Brezillon authored
Commit 05193dc3 ("drm/bridge: Make the bridge chain a double-linked list") patched the bridge chain logic to use a double-linked list instead of a single-linked list. This change induced changes to the Exynos driver which was manually resetting the encoder->bridge element to NULL to control the enable/disable sequence of the bridge chain. During this conversion, 2 bugs were introduced: 1/ list_splice() was used to move chain elements to our own internal chain, but list_splice() does not reset the source list to an empty state, leading to unexpected bridge hook calls when drm_bridge_chain_xxx() helpers were called by the core. Replacing the list_splice() call by list_splice_init() fixes this problem. 2/ drm_bridge_chain_xxx() helpers operate on the bridge->encoder->bridge_chain list, which is now empty. When the helper uses list_for_each_entry_reverse() we end up with no operation done which is not what we want. But that's even worse when the helper uses list_for_each_entry_from(), because in that case we end up in an infinite loop searching for the list head element which is no longer encoder->bridge_chain but exynos_dsi->bridge_chain. To address that problem we stop using the bridge chain helpers and call the hooks directly. Reported-by:
Marek Szyprowski <m.szyprowski@samsung.com> Fixes: 05193dc3 ("drm/bridge: Make the bridge chain a double-linked list") Signed-off-by:
Boris Brezillon <boris.brezillon@collabora.com> Tested-by:
Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191227144124.210294-3-boris.brezillon@collabora.com
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Boris Brezillon authored
Commit 05193dc3 ("drm/bridge: Make the bridge chain a double-linked list") patched the bridge chain logic to use a double-linked list instead of a single-linked list. This change induced changes to the VC4 driver which was manually resetting the encoder->bridge element to NULL to control the enable/disable sequence of the bridge chain. During this conversion, 2 bugs were introduced: 1/ list_splice() was used to move chain elements to our own internal chain, but list_splice() does not reset the source list to an empty state, leading to unexpected bridge hook calls when drm_bridge_chain_xxx() helpers were called by the core. Replacing those list_splice() calls by list_splice_init() ones fixes this problem. 2/ drm_bridge_chain_xxx() helpers operate on the bridge->encoder->bridge_chain list, which is now empty. When the helper uses list_for_each_entry_reverse() we end up with no operation done which is not what we want. But that's even worse when the helper uses list_for_each_entry_from(), because in that case we end up in an infinite loop searching for the list head element which is no longer encoder->bridge_chain but vc4_dsi->bridge_chain. To address that problem we stop using the bridge chain helpers and call the hooks directly. Reported-by:
Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20191227144124.210294-2-boris.brezillon@collabora.com
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kbuild test robot authored
Remove dev_err() messages after platform_get_irq*() failures. Line 450 is redundant because platform_get_irq() already prints an error. Generated by: scripts/coccinelle/api/platform_get_irq.cocci Fixes: dd90e9ae ("video: fbdev: mmp: add COMPILE_TEST support") Signed-off-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Julia Lawall <julia.lawall@inria.fr> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/alpine.DEB.2.21.2001042140310.6944@hadrien
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- 07 Jan, 2020 20 commits
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Boris Brezillon authored
This reverts commit 6ed7e962 ("drm/bridge: Add a drm_bridge_state object") which introduced a circular dependency between drm.ko and drm_kms_helper.ko. Looks like the helper/core split is not appropriate and fixing that is not simple. Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200107185807.606999-6-boris.brezillon@collabora.com
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Boris Brezillon authored
This reverts commit f7619a58 ("drm/bridge: Patch atomic hooks to take a drm_bridge_state"). Commit 6ed7e962 ("drm/bridge: Add a drm_bridge_state object") introduced a circular dependency between drm.ko and drm_kms_helper.ko which uncovered a misdesign in how the whole thing was implemented. Let's revert all patches depending on the bridge_state infrastructure for now. Signed-off-by:
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Boris Brezillon authored
This reverts commit b86d8955 ("drm/bridge: Add an ->atomic_check() hook"). Commit 6ed7e962 ("drm/bridge: Add a drm_bridge_state object") introduced a circular dependency between drm.ko and drm_kms_helper.ko which uncovered a misdesign in how the whole thing was implemented. Let's revert all patches depending on the bridge_state infrastructure for now. Signed-off-by:
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Boris Brezillon authored
This reverts commit e351e4d5 ("drm/bridge: Add the necessary bits to support bus format negotiation"). Commit 6ed7e962 ("drm/bridge: Add a drm_bridge_state object") introduced a circular dependency between drm.ko and drm_kms_helper.ko which uncovered a misdesign in how the whole thing was implemented. Let's revert all patches depending on the bridge_state infrastructure for now. Signed-off-by:
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Boris Brezillon authored
This reverts commit b18398c1 ("drm/bridge: Fix a NULL pointer dereference in drm_atomic_bridge_chain_check()"). Commit 6ed7e962 ("drm/bridge: Add a drm_bridge_state object") introduced a circular dependency between drm.ko and drm_kms_helper.ko which uncovered a misdesign in how the whole thing was implemented. Let's revert all patches depending on the bridge_state infrastructure for now. Signed-off-by:
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Dingchen Zhang authored
to terminate the while-loop in drm_dp_aux_crc_work when drm_dp_start/stop_crc are called in the hook to set crc source. v3: set crc->opened to false without checking (Nick) v2: Move spin_lock around entire crc->opened use (Daniel) Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Harry Wentland <Harry.Wentland@amd.com> Cc: Nick Kazlauskas <Nicholas.Kazlauskas@amd.com> Signed-off-by:
Dingchen Zhang <dingchen.zhang@amd.com> Reviewed-by:
Harry Wentland <harry.wentland@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190726173743.11641-1-dingchen.zhang@amd.com
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Dingchen Zhang authored
userspace may transfer a newline, and this terminating newline is replaced by a '\0' to avoid followup issues. 'len-1' is the index to replace the newline of CRC source name. v3: typo fix (Sam) v2: update patch subject, body and format. (Sam) Cc: Leo Li <sunpeng.li@amd.com> Cc: Harry Wentland <Harry.Wentland@amd.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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Andrzej Pietrasiewicz authored
Use the ddc pointer provided by the generic connector. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@collabora.com> Acked-by:
Emil Velikov <emil.velikov@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200102132300.24309-5-andrzej.p@collabora.com
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Andrzej Pietrasiewicz authored
Use the ddc pointer provided by the generic connector. Signed-off-by:
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Andrzej Pietrasiewicz authored
Use the ddc pointer provided by the generic connector. Signed-off-by:
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Andrzej Pietrasiewicz authored
Use the ddc pointer provided by the generic connector. Signed-off-by:
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Boris Brezillon authored
drm_atomic_bridge_chain_check() callers can pass a NULL bridge. Let's bail out before dereferencing the bridge pointer when that happens. Reported-by:
Chris Wilson <chris@chris-wilson.co.uk> Fixes: b86d8955 ("drm/bridge: Add an ->atomic_check() hook") Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
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Thomas Zimmermann authored
For hardware that does not interpret the startadd field correctly, add the module parameter 'hw_bug_no_startadd', which enables the workaround. v3: * style and typo fixes v2: * ask user for feedback if the option is active Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by:
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Thomas Zimmermann authored
Drivers that what to allocate VRAM GEM objects with additional fields can now do this by implementing struct drm_driver.gem_create_object. v3: * separately check allocation failure in if/else branches before upcast to gbo v2: * only cast to gbo within if branch; set gbo directly in else branch Signed-off-by:
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Thomas Zimmermann authored
TTM is an implementation detail of the VRAM helpers and therefore shouldn't be exposed to the callers. There's only one correct value for the BO device anyway, which is the one stored in the DRM device. So remove struct ttm_bo_device from the VRAM-helper interface and use the device's VRAM manager unconditionally. The GEM initializer function fails if the VRAM manager has not been initialized. Signed-off-by:
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Thomas Zimmermann authored
The flag 'interruptible', which is passed to various functions, is always set to be false. Remove it and hard-code the value. Signed-off-by:
Daniel Vetter <daniel@ffwll.ch> Reviewed-by:
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Boris Brezillon authored
drm_bridge_state is extended to describe the input and output bus configurations. These bus configurations are exposed through the drm_bus_cfg struct which encodes the configuration of a physical bus between two components in an output pipeline, usually between two bridges, an encoder and a bridge, or a bridge and a connector. The bus configuration is stored in drm_bridge_state separately for the input and output buses, as seen from the point of view of each bridge. The bus configuration of a bridge output is usually identical to the configuration of the next bridge's input, but may differ if the signals are modified between the two bridges, for instance by an inverter on the board. The input and output configurations of a bridge may differ if the bridge modifies the signals internally, for instance by performing format conversion, or*modifying signals polarities. Bus format negotiation is automated by the core, drivers just have to implement the ->atomic_get_{output,input}_bus_fmts() hooks if they want to take part to this negotiation. Negotiation happens in reverse order, starting from the last element of the chain (the one directly connected to the display) up to the first element of the chain (the one connected to the encoder). During this negotiation all supported formats are tested until we find one that works, meaning that the formats array should be in decreasing preference order (assuming the driver has a preference order). Note that the bus format negotiation works even if some elements in the chain don't implement the ->atomic_get_{output,input}_bus_fmts() hooks. In that case, the core advertises only MEDIA_BUS_FMT_FIXED and lets the previous bridge element decide what to do (most of the time, bridge drivers will pick a default bus format or extract this piece of information from somewhere else, like a FW property). Signed-off-by:Jonas Karlman <jonas@kwiboo.se> [narmstrong: fixed doc in include/drm/drm_bridge.h:69 fmt->format] Link: https://patchwork.freedesktop.org/patch/msgid/20200106143409.32321-5-narmstrong@baylibre.com
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Boris Brezillon authored
So that bridge drivers have a way to check/reject an atomic operation. The drm_atomic_bridge_chain_check() (which is just a wrapper around the ->atomic_check() hook) is called in place of drm_bridge_chain_mode_fixup() (when ->atomic_check() is not implemented, the core falls back on ->mode_fixup(), so the behavior should stay the same for existing bridge drivers). Signed-off-by:
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Boris Brezillon authored
This way the drm_bridge_funcs interface is consistent with the rest of the subsystem. The only driver implementing those hooks (analogix DP) is patched too. Signed-off-by:
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Boris Brezillon authored
One of the last remaining objects to not have its atomic state. This is being motivated by our attempt to support runtime bus-format negotiation between elements of the bridge chain. This patch just paves the road for such a feature by adding a new drm_bridge_state object inheriting from drm_private_obj so we can re-use some of the existing state initialization/tracking logic. Signed-off-by:
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- 06 Jan, 2020 17 commits
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Claudiu Beznea authored
This reverts commit d2c755e66617620b729041c625a6396c81d1231c ("drm: atmel-hlcdc: enable sys_clk during initalization."). With commit "drm: atmel-hlcdc: enable clock before configuring timing engine" there is no need for this patch. Code is also simpler. Cc: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun@microchip.com> Signed-off-by:Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by:
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Peter Rosin authored
The intention was to only select a higher pixel-clock rate than the requested, if a slight overclocking would result in a rate significantly closer to the requested rate than if the conservative lower pixel-clock rate is selected. The fixed patch has the logic the other way around and actually prefers the higher frequency. Fix that. Signed-off-by:
Peter Rosin <peda@axentia.se> Signed-off-by:
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Claudiu Beznea authored
Changing pixel clock source without having this clock source enabled will block the timing engine and the next operations after (in this case setting ATMEL_HLCDC_CFG(5) settings in atmel_hlcdc_crtc_mode_set_nofb() will fail). It is recomended (although in datasheet this is not present) to actually enabled pixel clock source before doing any changes on timing enginge (only SAM9X60 datasheet specifies that the peripheral clock and pixel clock must be enabled before using LCD controller). Fixes: 1a396789 ("drm: add Atmel HLCDC Display Controller support") Signed-off-by:
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Claudiu Beznea authored
Doubled system clock should be used as pixel cock source only if this is supported. This is emphasized by the value of atmel_hlcdc_crtc::dc::desc::fixed_clksrc. Fixes: a6eca2ab ("drm: atmel-hlcdc: add config option for clock selection") Signed-off-by:
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Sam Ravnborg authored
The reg property in the example caused following warnings: xinpeng,xpp055c272.example.dts:20.17-27: Warning (reg_format): /example-0/dsi@ff450000/panel@0:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1) xinpeng,xpp055c272.example.dt.yaml: Warning (pci_device_bus_num): Failed prerequisite 'reg_format' xinpeng,xpp055c272.example.dt.yaml: Warning (i2c_bus_reg): Failed prerequisite 'reg_format' xinpeng,xpp055c272.example.dt.yaml: Warning (spi_bus_reg): Failed prerequisite 'reg_format' xinpeng,xpp055c272.example.dts:18.21-24.15: Warning (avoid_default_addr_size): /example-0/dsi@ff450000/panel@0: Relying on default #address-cells value xinpeng,xpp055c272.example.dts:18.21-24.15: Warning (avoid_default_addr_size): /example-0/dsi@ff450000/panel@0: Relying on default #size-cells value Added #address-cells and #size-cells to silence the warning. Signed-off-by:
Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: devicetree@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20200106181731.GA24294@ravnborg.org
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yu kuai authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/bridge/cdns-dsi.c: In function ‘cdns_dsi_mode2cfg’: drivers/gpu/drm/bridge/cdns-dsi.c:515:11: warning: variable ‘nlanes’ set but not used [-Wunused-but-set-variable] It is never used, and so can be removed. Signed-off-by:
yu kuai <yukuai3@huawei.com> Reviewed-by:
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yu kuai authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/bridge/cdns-dsi.c: In function ‘cdns_dsi_bridge_enable’: drivers/gpu/drm/bridge/cdns-dsi.c:788:6: warning: variable ‘bpp’ set but not used [-Wunused-but-set-variable] It is never used, and so can be removed. Signed-off-by:
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zhengbin authored
Fixes coccicheck warning: drivers/gpu/drm/meson/meson_crtc.c:360:3-4: Unneeded semicolon drivers/gpu/drm/meson/meson_plane.c:181:2-3: Unneeded semicolon Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
zhengbin <zhengbin13@huawei.com> Reviewed-by:
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Julia Lawall authored
The dw_hdmi_hw structure is only copied into another structure, so make it const. The opportunity for this change was found using Coccinelle. Fixes: 7ed6c665 ("drm: bridge/dw_hdmi-ahb-audio: add audio driver") Signed-off-by:
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Thomas Zimmermann authored
This change makes information about VRAM consumption available on debugfs. See /sys/kernel/debug/dri/0/vram-mm for an overview of how VRAM is being used. Signed-off-by:
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Thomas Zimmermann authored
The hibmc driver aligns scanlines to 16 bytes. By using the new pitch_align argument of drm_gem_vram_fill_create_dumb(), convert hibmc over. v2: * move changes to VRAM helpers into separate patch Signed-off-by:
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Thomas Zimmermann authored
Adding the pitch alignment as an argument to drm_gem_vram_fill_create_dumb() allows to align scanlines to certain offsets. A value of 0 disables scanline pitches. v3: * only do power-of-2 test if pitch_align given; fails otherwise * mgag200: call drm_gem_vram_fill_create_dumb() with pitch_align v2: * split of patch from related hibmc changes * test if scanline pitch is power of 2 Signed-off-by:
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Thomas Zimmermann authored
The hibmc driver's struct hibmc_framebuffer stores a DRM framebuffer with an associated GEM object. This functionality is also provided by generic code. Switch hibmc over. Signed-off-by:
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Thomas Zimmermann authored
There's nothing special about hibmc's fbdev emulation that is not provided by the generic implementation. Switch over and remove the driver's code. Signed-off-by:
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Nickey Yang authored
Fix edid reading error when edid's block > 2. Signed-off-by:
Nickey Yang <nickey.yang@rock-chips.com> Signed-off-by:
Johan Jonker <jbx6244@gmail.com> Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20191211203417.19448-1-jbx6244@gmail.com
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Miquel Raynal authored
Introduce PX30 LVDS support. This means adding the relevant helper functions, a specific probe and also the initialization of a specific PHY. Signed-off-by:
Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by:
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Maarten Lankhorst authored
Requested, and we need v5.5-rc1 backported as our current branch is still based on v5.4. Signed-off-by:Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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