- 02 Mar, 2022 6 commits
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Thomas Zimmermann authored
Fix coding style. No functional changes. Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by:
Javier Martinez Canillas <javierm@redhat.com> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220223193804.18636-4-tzimmermann@suse.de
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Thomas Zimmermann authored
Improve the performance of sys_imageblit() by manually unrolling the inner blitting loop and moving some invariants out. The compiler failed to do this automatically. The resulting binary code was even slower than the cfb_imageblit() helper, which uses the same algorithm, but operates on I/O memory. A microbenchmark measures the average number of CPU cycles for sys_imageblit() after a stabilizing period of a few minutes (i7-4790, FullHD, simpledrm, kernel with debugging). The value for CFB is given as a reference. sys_imageblit(), new: 25934 cycles sys_imageblit(), old: 35944 cycles cfb_imageblit(): 30566 cycles In the optimized case, sys_imageblit() is now ~30% faster than before and ~20% faster than cfb_imageblit(). v2: * move switch out of inner loop (Gerd) * remove test for alignment of dst1 (Sam) Signed-off-by:
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Thomas Zimmermann authored
Improve the performance of sys_fillrect() by using word-aligned 32/64-bit mov instructions. While the code tried to implement this, the compiler failed to create fast instructions. The resulting binary instructions were even slower than cfb_fillrect(), which uses the same algorithm, but operates on I/O memory. A microbenchmark measures the average number of CPU cycles for sys_fillrect() after a stabilizing period of a few minutes (i7-4790, FullHD, simpledrm, kernel with debugging). The value for CFB is given as a reference. sys_fillrect(), new: 26586 cycles sys_fillrect(), old: 166603 cycles cfb_fillrect(): 41012 cycles In the optimized case, sys_fillrect() is now ~6x faster than before and ~1.5x faster than the CFB implementation. Signed-off-by:
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Tom Rix authored
For spdx change tab to space delimiter Use // for *.c Replacements commited to committed regsiters to registers initialze to initialize Signed-off-by:
Tom Rix <trix@redhat.com> Reviewed-by:
Steven Price <steven.price@arm.com> Signed-off-by:
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Liu Ying authored
To initialize register NWL_DSI_IRQ_MASK, it's enough to write it only once in function nwl_dsi_init_interrupts(). Signed-off-by:
Liu Ying <victor.liu@nxp.com> Reviewed-by:
Guido Günther <agx@sigxcpu.org> Signed-off-by:
Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220216085842.1973868-1-victor.liu@nxp.com
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Hsin-Yi Wang authored
If the previous transfer didn't end with a command without DP_AUX_I2C_MOT, the next read trasnfer will miss the first byte. But if the command in previous transfer is requested with length 0, it's a no-op to anx7625 since it can't process this command. anx7625 requires the last command to be read command with length > 0. It's observed that if we clear the DP_AUX_I2C_MOT in read transfer, we can still get correct data. Clear the read commands with DP_AUX_I2C_MOT bit to fix this issue. Fixes: adca62ec ("drm/bridge: anx7625: Support reading edid through aux channel") Signed-off-by:
Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by:
Xin Ji <xji@analogixsemi.com> Signed-off-by:
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- 01 Mar, 2022 3 commits
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Melissa Wen authored
Remove redundant error message (since now it is very similar to what we do in drm_sched_init) and centralize all error handling in a unique place, as we follow the same steps in any case of failure. Signed-off-by:
Melissa Wen <mwen@igalia.com> Acked-by:
Andrey Grodzovsky <andrey.grodzovsky@amd.com> Signed-off-by:
Melissa Wen <melissa.srw@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220228181647.3794298-1-mwen@igalia.com
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José Expósito authored
The function "drm_of_find_panel_or_bridge" has been deprecated in favor of "devm_drm_of_get_bridge". Switch to the new function and reduce boilerplate. Signed-off-by:
José Expósito <jose.exposito89@gmail.com> Reviewed-by:
Maxime Ripard <maxime@cerno.tech> Signed-off-by:
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Xin Ji authored
If "hdcp_workqueue" exist, must release "hdcp_workqueue", not "workqueue". Fixes: cd1637c7 ("drm/bridge: anx7625: add HDCP support") Signed-off-by:
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- 28 Feb, 2022 9 commits
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Hsin-Yi Wang authored
The size of read_buf is READ_BUFFER_SIZE (200), so we can't access it with read_buf + PAGE_SIZE (4096). Extend the READ_BUFFER_SIZE to 400 and set the end position to read_buf + READ_BUFFER_SIZE. Fixes: b5c84a9e ("drm/bridge: add it6505 driver") Reported-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Rahul T R authored
Initialize bpc while creating panel_desc structure for RK101II01D-CT Below warning is triggered since bpc is not being initialized WARNING: CPU: 2 PID: 47 at drivers/gpu/drm/panel/panel-simple.c:614 panel_simple_probe+0x1b0/0x3c8 Signed-off-by:
Rahul T R <r-ravikumar@ti.com> Reviewed-by:
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by:
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Nishanth Menon authored
Add MODULE_DEVICE_TABLE to the device tree table to create required aliases needed for module to be loaded with device tree based platform. Fixes: e1923395 ("drm/bridge: Add Cadence DSI driver") Signed-off-by:
Nishanth Menon <nm@ti.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Noralf Trønnes authored
Add a driver that will work with most MIPI DBI compatible SPI panels. This avoids adding a driver for every new MIPI DBI compatible controller that is to be used by Linux. The 'compatible' Device Tree property with a '.bin' suffix will be used to load a firmware file that contains the controller configuration. Example (driver will load sainsmart18.bin): display@0 { compatible = "sainsmart18", "panel-mipi-dbi-spi"; ... }; v5: - kconfig: s/DRM_KMS_CMA_HELPER/DRM_GEM_CMA_HELPER/ (Sam) - kconfig: Add select VIDEOMODE_HELPERS (Sam) - kconfig: Add wiki url in the description (Sam) - Split out and use of_get_drm_panel_display_mode()(Sam) - Only use the first compatible to look for a firmware file since the binding mandates 2 compatibles. - Make having a firmware file mandatory so we can print an error message if it's missing to improve the user experience. It's very unlikely that a controller doesn't need to be initialized and if it doesn't, it's possible to have a firmware file containing only a DCS NOP. v4: - Move driver to drm/tiny where the other drivers of its kind are located. The driver module will not be shared with a future DPI driver after all. v3: - Move properties to DT (Maxime) - The MIPI DPI spec has optional support for DPI where the controller is configured over DBI. Rework the command functions so they can be moved to drm_mipi_dbi and shared with a future panel-mipi-dpi-spi driver v2: - Drop model property and use compatible instead (Rob) - Add wiki entry in MAINTAINERS Acked-by:Noralf Trønnes <noralf@tronnes.org> Signed-off-by:
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Noralf Trønnes authored
devm_drm_dev_alloc() can't allocate structures that embed a structure which then again embeds drm_device. Workaround this by adding a driver_private pointer to struct mipi_dbi_dev which the driver can use for its additional state. v3: - Add documentation Acked-by:
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Noralf Trønnes authored
Add a function to get a drm_display_mode from a panel-timing device tree subnode. Suggested-by:
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Noralf Trønnes authored
Remove trailing whitespace from a comment. Acked-by:
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Noralf Trønnes authored
Add binding for MIPI DBI compatible SPI panels. v6: - Fix indentation (Rob) v5: - Add sainsmart18 to compatible items (Rob) - Expand write-only description (Sam) v4: - There should only be two compatible (Maxime) - s/panel-dbi-spi/panel-mipi-dbi-spi/in compatible v3: - Move properties to Device Tree (Maxime) - Use contains for compatible (Maxime) - Add backlight property to example - Flesh out description v2: - Fix path for panel-common.yaml - Use unevaluatedProperties - Drop properties which are in the allOf section - Drop model property (Rob) Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Daniel Vetter authored
Some things changed, and add two useful links. v2: Also include a link to the QR encoding work. Plus review from Javier. v3: Fix typo Guilherme spotted. Reviewed-by:
Guilherme G. Piccoli <gpiccoli@igalia.com> Acked-by:
Pekka Paalanen <pekka.paalanen@collabora.com> Reviewed-by:
Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220224132425.3463791-1-daniel.vetter@ffwll.ch
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- 25 Feb, 2022 16 commits
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Maxime Ripard authored
The omap KMS driver will call drm_plane_create_color_properties() with a default encoding and range values of BT601 and Full Range, respectively. Since the initial value wasn't carried over in the state, the driver had to set it again in omap_plane_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Reviewed-by:
Tomi Valkeinen <tomba@kernel.org> Signed-off-by:
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Dave Stevenson authored
The drm_plane_create_color_properties() function asks for an initial value for the color encoding and range, and will set the associated plane state variable with that value if a state is present. However, that function is usually called at a time where there's no state yet. Since the drm_plane_state reset helper doesn't take care of reading that value when it's called, it means that in most cases the initial value will be 0 (so DRM_COLOR_YCBCR_BT601 and DRM_COLOR_YCBCR_LIMITED_RANGE, respectively), or the drivers will have to work around it. Let's add some code in __drm_atomic_helper_plane_state_reset() to get the initial encoding and range value if the property has been attached in order to fix this. Reviewed-by:
Harry Wentland <harry.wentland@amd.com> Signed-off-by:
Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by:
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Maxime Ripard authored
The sun4i KMS driver will call drm_plane_create_zpos_property() with an init value depending on the plane type. Since the initial value wasn't carried over in the state, the driver had to set it again in sun4i_backend_layer_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Cc: linux-arm-kernel@lists.infradead.org Cc: linux-sunxi@lists.linux.dev Cc: Chen-Yu Tsai <wens@csie.org> Reviewed-by:
Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by:
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Maxime Ripard authored
The sti KMS driver will call drm_plane_create_zpos_property() with an init value depending on the plane type. Since the initial value wasn't carried over in the state, the driver had to set it again in sti_plane_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Reviewed-by:
Alain Volmat <alain.volmat@foss.st.com> Reviewed-by:
Philippe Cornu <philippe.cornu@foss.st.com> Signed-off-by:
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Maxime Ripard authored
The rcar-du KMS driver will call drm_plane_create_zpos_property() with an init value depending on the plane type. Since the initial value wasn't carried over in the state, the driver had to set it again in rcar_du_plane_reset() and rcar_du_vsp_plane_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Cc: linux-renesas-soc@vger.kernel.org Reviewed-by:
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by:
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Maxime Ripard authored
The omap KMS driver will call drm_plane_create_zpos_property() with an init value of the plane index and the plane type. Since the initial value wasn't carried over in the state, the driver had to set it again in omap_plane_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Reviewed-by:
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Maxime Ripard authored
The nouveau KMS driver will call drm_plane_create_zpos_property() with an init value depending on the plane purpose. Since the initial value wasn't carried over in the state, the driver had to set it again in nv50_wndw_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Cc: nouveau@lists.freedesktop.org Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: Lyude Paul <lyude@redhat.com> Signed-off-by:
Karol Herbst <kherbst@redhat.com> Reviewed-by:
Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220221095918.18763-14-maxime@cerno.tech
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Maxime Ripard authored
The mdp KMS driver will call drm_plane_create_zpos_property() with an init value depending on the plane purpose. Since the initial value wasn't carried over in the state, the driver had to set it again in mdp5_plane_reset(). However, the helpers have been adjusted to set it properly at reset, so this is not needed anymore. Cc: freedreno@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org Cc: Abhinav Kumar <quic_abhinavk@quicinc.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Sean Paul <sean@poorly.run> Reviewed-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by:
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Dave Stevenson authored
The drm_plane_create_zpos_property() function asks for an initial value, and will set the associated plane state variable with that value if a state is present. However, that function is usually called at a time where there's no state yet. Since the drm_plane_state reset helper doesn't take care of reading that value when it's called, it means that in most cases the initial value will be 0, or the drivers will have to work around it. Let's add some code in __drm_atomic_helper_plane_state_reset() to get the initial zpos value if the property has been attached in order to fix this. Reviewed-by:
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Dave Stevenson authored
Some functions to create properties (drm_plane_create_zpos_property or drm_plane_create_color_properties for example) will ask for a range of acceptable value and an initial one. This initial value is then stored in the values array for that property. Let's provide an helper to access this property. Acked-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by:
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Maxime Ripard authored
While the omap_plane_init() function calls drm_plane_create_zpos_property() with an initial value of 0, omap_plane_reset() will force it to another value depending on the plane type. Fix the discrepancy by setting the initial zpos value to the same value in the drm_plane_create_zpos_property() call. Reviewed-by:
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Jagan Teki authored
Devices can also be child nodes when we also control that device through the upstream device (ie, MIPI-DCS for a MIPI-DSI device). drm_of_find_panel_or_bridge can lookup panel or bridge for a given device has port and endpoint and it fails to lookup if the device has a child nodes. This patch add support to lookup for a child node of the given parent that isn't either port or ports. Example OF graph representation of DSI host, which has port but not has ports and has child panel node. dsi { compatible = "allwinner,sun6i-a31-mipi-dsi"; #address-cells = <1>; #size-cells = <0>; port { dsi_in_tcon0: endpoint { remote-endpoint = <tcon0_out_dsi>; }; panel@0 { reg = <0>; }; }; Example OF graph representation of DSI host, which has ports but not has port and has child panel node. dsi { compatible = "samsung,exynos5433-mipi-dsi"; #address-cells = <1>; #size-cells = <0>; ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; dsi_to_mic: endpoint { remote-endpoint = <&mic_to_dsi>; }; }; }; panel@0 { reg = <0>; }; }; Example OF graph representation of DSI host, which has neither a port nor a ports but has child panel node. dsi0 { compatible = "ste,mcde-dsi"; #address-cells = <1>; #size-cells = <0>; panel@0 { reg = <0>; }; }; Reviewed-by:Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
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Raphael Gallais-Pou authored
This patch adds the CRC hashing feature supported by some recent hardware versions of the LTDC. This is useful for test suite such as IGT-GPU-tools [1] where a CRTC output frame can be compared to a test reference frame thanks to their respective CRC hash. [1] https://cgit.freedesktop.org/drm/igt-gpu-toolsSigned-off-by:
Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> Acked-by:
Yannick Fertre <yannick.fertre@foss.st.com> Signed-off-by:
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Nathan Chancellor authored
Clang warns: drivers/gpu/drm/stm/ltdc.c:625:2: warning: variable 'val' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] default: ^~~~~~~ drivers/gpu/drm/stm/ltdc.c:635:2: note: uninitialized use occurs here val |= LxPCR_YCEN; ^~~ drivers/gpu/drm/stm/ltdc.c:600:9: note: initialize the variable 'val' to silence this warning u32 val; ^ = 0 1 warning generated. Use a return instead of break in the default case to fix the warning. Add an error message so that this return is not silent, which could hide issues in the future. Fixes: 484e72d3 ("drm/stm: ltdc: add support of ycbcr pixel formats") Link: https://github.com/ClangBuiltLinux/linux/issues/1575Acked-by:Nick Desaulniers <ndesaulniers@google.com> Reviewed-by:
Nathan Chancellor <nathan@kernel.org> Signed-off-by:
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Kees Cook authored
The link_status array was not large enough to read the Adjust Request Post Cursor2 register, so remove the common helper function to avoid an OOB read, found with a -Warray-bounds build: drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor': drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds] 59 | return link_status[r - DP_LANE0_1_STATUS]; | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status' 147 | u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE], | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Replace the only user of the helper with an open-coded fetch and decode, similar to drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c. Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org Fixes: 79465e0f ("drm/dp: Add helper to get post-cursor adjustments") Signed-off-by:Kees Cook <keescook@chromium.org> Reviewed-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Link: https://lore.kernel.org/r/20220105173507.2420910-1-keescook@chromium.orgSigned-off-by:
Thierry Reding <treding@nvidia.com>
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Kees Cook authored
The pcon_dsc_dpcd array holds 13 registers (0x92 through 0x9E). Fix the math to calculate the max size. Found from a -Warray-bounds build: drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_pcon_dsc_bpp_incr': drivers/gpu/drm/drm_dp_helper.c:3130:28: error: array subscript 12 is outside array bounds of 'const u8[12]' {aka 'const unsigned char[12]'} [-Werror=array-bounds] 3130 | buf = pcon_dsc_dpcd[DP_PCON_DSC_BPP_INCR - DP_PCON_DSC_ENCODER]; | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_dp_helper.c:3126:39: note: while referencing 'pcon_dsc_dpcd' 3126 | int drm_dp_pcon_dsc_bpp_incr(const u8 pcon_dsc_dpcd[DP_PCON_DSC_ENCODER_CAP_SIZE]) | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org Fixes: e2e16da3 ("drm/dp_helper: Add support for Configuring DSC for HDMI2.1 Pcon") Cc: stable@vger.kernel.org Reviewed-by:
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- 24 Feb, 2022 2 commits
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Cai Huoqing authored
The nouveau driver depends on include/linux/list.h instead of nvif/list.h, so remove the obstacle-nvif/list.h. Signed-off-by:
Cai Huoqing <cai.huoqing@linux.dev> Signed-off-by:
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Javier Martinez Canillas authored
There is now a drm_fb_xrgb8888_to_mono_reversed() helper function to do format conversion from XRGB8888 to reversed monochrome. Use that helper and remove the open coded version in the repaper driver. Signed-off-by:
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- 23 Feb, 2022 4 commits
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Hans de Goede authored
Some devices use e.g. a portrait panel in a standard laptop casing made for landscape panels. efifb calls drm_get_panel_orientation_quirk() and sets fb_info.fbcon_rotate_hint to make fbcon rotate the console so that it shows up-right instead of on its side. When switching to simpledrm the fbcon renders on its side. Call the drm_connector_set_panel_orientation_with_quirk() helper to add a "panel orientation" property on devices listed in the quirk table, to make the fbcon (and aware userspace apps) rotate the image to display properly. Cc: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
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Arunpravin authored
create a pot-sized mm, then allocate one of each possible order within. This should leave the mm with exactly one page left. Free the largest block, then whittle down again. Eventually we will have a fully 50% fragmented mm. v2(Matthew Auld): - removed unnecessary test succeeded print - replace list_del()/list_add_tail() with list_move_tail() Signed-off-by:
Arunpravin <Arunpravin.PaneerSelvam@amd.com> Reviewed-by:
Matthew Auld <matthew.auld@intel.com> Acked-by:
Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-7-Arunpravin.PaneerSelvam@amd.comSigned-off-by:
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Arunpravin authored
- add a test to ascertain that the critical functionalities of the program is working fine - add a timeout helper function v2: - removed unnecessary test succeeded print - replace list_del()/list_add_tail() with list_move_tail() Signed-off-by:
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Arunpravin authored
create a pot-sized mm, then allocate one of each possible order within. This should leave the mm with exactly one page left. v2: - removed unnecessary test succeeded print - replace list_del()/list_add_tail() with list_move_tail() Signed-off-by:
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