- 24 Mar, 2020 7 commits
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Jernej Skrabec authored
is_color_space_conversion() is a misnomer. It checks not only if color space conversion is needed, but also if format conversion is needed. This is actually desired behaviour because result of this function determines if CSC block should be enabled or not (CSC block can also do format conversion). In order to clear misunderstandings, let's rework is_color_space_conversion() to do exactly what is supposed to do and add another function which will determine if CSC block must be enabled or not. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-5-jernej.skrabec@siol.net
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Jernej Skrabec authored
CEA 861 standard requestis that RGB quantization range is "limited" for CEA modes. Support that by adding CSC matrix which downscales values. This allows proper color reproduction on TV and PC monitor at the same time. In future, override property can be added, like "Broadcast RGB" in i915 driver. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-4-jernej.skrabec@siol.net
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Jonas Karlman authored
Setting scan mode to "none" confuses some TVs like LG B8, which randomly change overscan percentage over time. Digital outputs like HDMI and DVI, handled by this controller, don't really need overscan, so we can always set scan mode to underscan. Actually, this is exactly what drm_hdmi_avi_infoframe_from_display_mode() already does, so we can just remove offending line. Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jonas Karlman <jonas@kwiboo.se> [updated commit message] Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-3-jernej.skrabec@siol.net
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Jernej Skrabec authored
sun8i_mixer.h include is misplaced. Move it. Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-8-jernej.skrabec@siol.net
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Jernej Skrabec authored
Now that de2_fmt_info contains only DRM <-> HW format mapping, it doesn't make sense to return pointer to structure when searching by DRM format. Rework that to return only HW format instead. This doesn't make any functional change. Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-7-jernej.skrabec@siol.net
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Jernej Skrabec authored
For RGB formats CSC mode is always set to none and for YUV formats almost always set to YUV to RGB. Add a helper function to deduce CSC mode from format. Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-6-jernej.skrabec@siol.net
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Jernej Skrabec authored
drm_format_info structure already contains information if format is RGB or YUV. Use that instead. Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-5-jernej.skrabec@siol.net
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- 23 Mar, 2020 2 commits
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Wambui Karuga authored
Remove unneeded #if/#endif guards for checking whether the CONFIG_DEBUG_FS option is set or not. If the option is not set, the compiler optimizes the functions making the guards unnecessary. Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200323112802.228214-1-wambui.karugax@gmail.com
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Andrzej Pietrasiewicz authored
This patch adds support for afbc handling. afbc is a compressed format which reduces the necessary memory bandwidth. Co-developed-by: Mark Yao <mark.yao@rock-chips.com> Signed-off-by: Mark Yao <mark.yao@rock-chips.com> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Reviewed-by: Sandy Huang <hjc@rock-chips.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200311145541.29186-7-andrzej.p@collabora.com
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- 22 Mar, 2020 5 commits
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Qiang Yu authored
track lima task start which can be combined with dma_fence_signal to identify task execution time. example command to record: trace-cmd record -i \ -e "lima:lima_task_submit" -e "lima:lima_task_run" \ -e "*fence:*fence_signaled" -e "drm:drm_vblank_event" \ -e "drm:drm_vblank_event_queued" sleep 4 Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200307135438.9981-1-yuq825@gmail.com
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Qiang Yu authored
Export /sys/class/drm/cardX/device/error sysfs for user read out error task dump file. Tested-by: Andreas Baierl <ichgeh@imkreisrum.de> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200222024210.18697-5-yuq825@gmail.com
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Qiang Yu authored
Save all information to start a task which can be exported to user for debug usage. Dump file data format is specified in lima_dump.h v2: Add include header to address build robot complain. Tested-by: Andreas Baierl <ichgeh@imkreisrum.de> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200307134423.24329-1-yuq825@gmail.com
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Qiang Yu authored
Limit error tasks to save. Tested-by: Andreas Baierl <ichgeh@imkreisrum.de> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200222024210.18697-3-yuq825@gmail.com
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Qiang Yu authored
When task fail, we can find its process with this information. Tested-by: Andreas Baierl <ichgeh@imkreisrum.de> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200222024210.18697-2-yuq825@gmail.com
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- 21 Mar, 2020 2 commits
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Geert Uytterhoeven authored
mipi_dbi_command_stackbuf() copies the passed buffer data, so it can be const. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200316164249.6234-1-geert+renesas@glider.be
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Sam Ravnborg authored
Fix a few grammar/editorial issues spotted by Laurent Pinchart. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200314153047.2486-4-sam@ravnborg.org
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- 20 Mar, 2020 10 commits
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Tomi Valkeinen authored
Remove unused writeback code. This code will never be used, as omapfb is being deprecated. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200313122410.7528-1-tomi.valkeinen@ti.com
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Randy Dunlap authored
When 'VIAFB_DEBUG' and 'VIAFB_WARN' are not defined, modify the DEBUG_MSG() &WARN_MSG() macros to use the no_printk() macro instead of using <empty>. This fixes a build warning when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/via/ioctl.c:88:47: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Also use %lu to print an unsigned long instead of just %l, to fix a printk format warning: ../drivers/video/fbdev/via/viafbdev.c: In function ‘viafb_dvp0_proc_write’: ../drivers/video/fbdev/via/viafbdev.c:1148:14: warning: unknown conversion type character ‘]’ in format [-Wformat=] DEBUG_MSG("DVP0:reg_val[%l]=:%x\n", i, Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-7-rdunlap@infradead.org
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Randy Dunlap authored
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the no_printk() macro instead of using <empty>. This fixes build warnings when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/pm2fb.c:227:38: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] ../drivers/video/fbdev/pm3fb.c:1039:33: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Also drop one argument in two DPRINTK() macro uses to provide the correct number of arguments and use the correct field in one case to fix a build error: ../drivers/video/fbdev/pm3fb.c:353:9: error: ‘struct fb_info’ has no member named ‘current_par’ info->current_par->depth); Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-6-rdunlap@infradead.org
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Randy Dunlap authored
When 'SAVAGEFB_DEBUG' is not defined, modify the DBG() macro to use the no_printk() macro instead of using <empty>. This fixes a build warning when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/savage/savagefb_driver.c:2411:13: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-5-rdunlap@infradead.org
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Randy Dunlap authored
When 'DEBUG' is not defined, modify the dprintk() macro to use the no_printk() macro instead of using <empty>. This fixes build warnings when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/matrox/matroxfb_base.c:635:77: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] ../drivers/video/fbdev/matrox/matroxfb_Ti3026.c:632:54: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] ../drivers/video/fbdev/matrox/matroxfb_Ti3026.c:654:53: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-4-rdunlap@infradead.org
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Randy Dunlap authored
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the no_printk() macro instead of using <empty>. This fixes a build warning when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/aty/atyfb_base.c:784:61: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-3-rdunlap@infradead.org
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Randy Dunlap authored
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the no_printk() macro instead of using <empty>. This fixes a build warning when -Wextra is used and provides printk format checking: ../drivers/video/fbdev/core/fbmon.c:812:47: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] ../drivers/video/fbdev/core/fbmon.c:842:24: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] ../drivers/video/fbdev/core/fbmon.c:847:24: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-2-rdunlap@infradead.org
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Takashi Iwai authored
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-4-tiwai@suse.de
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Takashi Iwai authored
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-3-tiwai@suse.de
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Takashi Iwai authored
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-2-tiwai@suse.de
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- 19 Mar, 2020 1 commit
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Jiri Slaby authored
After commit f651c8b0 ("drm/virtio: factor out the sg_table from virtio_gpu_object"), virtio_gpu_create_object allocates too small space to fit everything in. It is because it allocates struct virtio_gpu_object, but should allocate a newly added struct virtio_gpu_object_shmem which has 2 more members. So fix that by using correct type in virtio_gpu_create_object. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: http://patchwork.freedesktop.org/patch/msgid/20200319100421.16267-1-jslaby@suse.cz Fixes: f651c8b0 ("drm/virtio: factor out the sg_table from virtio_gpu_object") Cc: Gurchetan Singh <gurchetansingh@chromium.org> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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- 18 Mar, 2020 13 commits
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Ville Syrjälä authored
drm_mode_config_init() may not have been called when the driver/device doesn't support modeset. That will cause drm_mode_config_validate() to oops. Skip the validation for !modeset. TODO: We may want to consider calling drm_mode_config_init() unconditionally to avoid similar issues elsewhere... Fixes: 74d2aacb ("drm: Validate encoder->possible_clones") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200318182518.31618-1-ville.syrjala@linux.intel.comReviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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Daniel Vetter authored
We're getting some random other stuff that we're not really interested in, so match only word boundaries. Also avoid the capture group while at it. Suggested by Joe Perches. Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linaro-mm-sig@lists.linaro.org Cc: Joe Perches <joe@perches.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200317205643.1028398-1-daniel.vetter@ffwll.ch
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Wambui Karuga authored
As a result of commit 987d65d0 (drm: debugfs: make drm_debugfs_create_files() never fail) and changes to various debugfs functions in drm/core and across various drivers, there is no need for the drm_driver.debugfs_init() hook to have a return value. Therefore, declare it as void. This also includes refactoring all users of the .debugfs_init() hook to return void across the subsystem. v2: include changes to the hook and drivers that use it in one patch to prevent driver breakage and enable individual successful compilation of this change. References: https://lists.freedesktop.org/archives/dri-devel/2020-February/257183.htmlSigned-off-by: Wambui Karuga <wambui.karugax@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200310133121.27913-18-wambui.karugax@gmail.com
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Ville Syrjälä authored
WARN if the encoder possible_crtcs is effectively empty or contains bits for non-existing crtcs. v2: Move to drm_mode_config_validate() (Daniel) Make the docs say we WARN when this is wrong (Daniel) Extract full_crtc_mask() Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200211162208.16224-7-ville.syrjala@linux.intel.comReviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored
Many drivers are populating encoder->possible_clones wrong. Let's persuade them to get it right by adding some loud WARNs. We'll cross check the bits between any two encoders. So either both encoders can clone with the other, or neither can. We'll also complain about effectively empty possible_clones, and possible_clones containing bits for encoders that don't exist. v2: encoder->possible_clones now includes the encoder itelf v3: Move to drm_mode_config_validate() (Daniel) Document that you get a WARN when this is wrong (Daniel) Extract full_encoder_mask() v4: !! instead of ! (Daniel) Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200211162208.16224-6-ville.syrjala@linux.intel.comReviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored
It's not at all clear what cloning options this driver supports. So let's just clear possible_clones instead of setting it to some bogus value. v2: Adjust the FIXME (Daniel) Cc: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200211162208.16224-5-ville.syrjala@linux.intel.com
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Ville Syrjälä authored
I doubt the DP+DP and SDVO+SDVO cloning works for this driver. i915 at least doesn't do those. Truthfully there could be some very specific circumstances where some of them would do doable, but genereally it's too much pain to deal with so we've chose not to bother. Let's use the same approach for gma500. Also the LVDS+LVDS and DSI+DSI cases probably don't really exist as there is one of each at most. This does mean we'll now leave possible_clones at 0 for these encoder types whereas previosuly we included the encoder itself in the bitmask. But that's fine as the core now treaks 0 as a special case and adds the encoder itself into the final bitmask reported to userspace. Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200211162208.16224-3-ville.syrjala@linux.intel.com
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Ville Syrjälä authored
The docs say possible_clones should always include the encoder itself. Since most drivers don't want to deal with the complexities of cloning let's allow them to set possible_clones=0 and instead we'll fix that up in the core. We can't put this special case into drm_encoder_init() because drivers will have to fill up possible_clones after adding all the relevant encoders. Otherwise they wouldn't know the proper encoder indexes to use. So we'll just do it just before registering the device. v2: Don't set the bit if possible_clones!=0 so that the validation (coming soon) will WARN (Thomas) Fix up the docs to allow possible_clones==0 (Daniel) .late_register() is too late, introduce drm_mode_config_validate() which gets called _before_ we register the char device (Daniel) Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200211162208.16224-2-ville.syrjala@linux.intel.comReviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Wambui Karuga authored
Since 987d65d0 (drm: debugfs: make drm_debugfs_create_files() never fail), there is no need to check the return value of drm_debugfs_create_files(). Therefore, remove remove unnecessary checks and error handling statement blocks for its return value. These changes also enable changing drm_debugfs_create_files() to return void. Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200310133121.27913-17-wambui.karugax@gmail.com
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Ville Syrjälä authored
Currently the DispID tile block gets parsed in drm_get_edid(), which is an odd place for it considering we parse nothing else there. Also this doesn't work for override EDIDs since drm_connector_update_edid_property() refuses to do its job twice in such cases. Thus we never update the tile property with results of the DispID tile block parsing during drm_get_edid(). To fix this let's just move the tile block parsing to happen during drm_connector_update_edid_property(), which is where we parse a bunch of other stuff as well (and where we update both the EDID and tile properties). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-10-ville.syrjala@linux.intel.comReviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Ville Syrjälä authored
Throw out the magic '5' from validate_displayid() and replace with the actual thing we mean sizeof(header)+checksum. Also rewrite the checksum loop to be less hard to parse for mere mortals. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-9-ville.syrjala@linux.intel.comReviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Ville Syrjälä authored
The EDID extension block checksum byte is not part of the actual DispID data, so don't use it in validate_displayid(). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-8-ville.syrjala@linux.intel.comReviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Ville Syrjälä authored
Currently the code assumes that the entire EDID extesion block can be taken up by the DispID blocks. That is not true. There is at least always the DispID checksum, and potentially fill bytes if the extension block uses the interior fill scheme to pad out to fill EDID block size. So let's not parse the checksum or the fill bytes as DispID blocks by having drm_find_displayid_extension() return the actual length of the DispID data to the caller. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-7-ville.syrjala@linux.intel.comReviewed-by: Alex Deucher <alexander.deucher@amd.com>
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