summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/drm_mipi_dbi.c
AgeCommit message (Collapse)AuthorFilesLines
2020-08-06Merge tag 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drmLinus Torvalds1-15/+10
Pull drm updates from Dave Airlie: "New xilinx displayport driver, AMD support for two new GPUs (more header files), i915 initial support for RocketLake and some work on their DG1 (discrete chip). The core also grew some lockdep annotations to try and constrain what drivers do with dma-fences, and added some documentation on why the idea of indefinite fences doesn't work. The long list is below. I do have some fixes trees outstanding, but I'll follow up with those later. core: - add user def flag to cmd line modes - dma_fence_wait added might_sleep - dma-fence lockdep annotations - indefinite fences are bad documentation - gem CMA functions used in more drivers - struct mutex removal - more drm_ debug macro usage - set/drop master api fixes - fix for drm/mm hole size comparison - drm/mm remove invalid entry optimization - optimise drm/mm hole handling - VRR debugfs added - uncompressed AFBC modifier support - multiple display id blocks in EDID - multiple driver sg handling fixes - __drm_atomic_helper_crtc_reset in all drivers - managed vram helpers ttm: - ttm_mem_reg handling cleanup - remove bo offset field - drop CMA memtype flag - drop mappable flag xilinx: - New Xilinx ZynqMP DisplayPort Subsystem driver nouveau: - add CRC support - start using NVIDIA published class header files - convert all push buffer emission to new macros - Proper push buffer space management for EVO/NVD channels. - firmware loading fixes - 2MiB system memory pages support on Pascal and newer vkms: - larger cursor support i915: - Rocketlake platform enablement - Early DG1 enablement - Numerous GEM refactorings - DP MST fixes - FBC, PSR, Cursor, Color, Gamma fixes - TGL, RKL, EHL workaround updates - TGL 8K display support fixes - SDVO/HDMI/DVI fixes amdgpu: - Initial support for Sienna Cichlid GPU - Initial support for Navy Flounder GPU - SI UVD/VCE support - expose rotation property - Add support for unique id on Arcturus - Enable runtime PM on vega10 boards that support BACO - Skip BAR resizing if the bios already did id - Major swSMU code cleanup - Fixes for DCN bandwidth calculations amdkfd: - Track SDMA usage per process - SMI events interface radeon: - Default to on chip GART for AGP boards on all arches - Runtime PM reference count fixes msm: - headers regenerated causing churn - a650/a640 display and GPU enablement - dpu dither support for 6bpc panels - dpu cursor fix - dsi/mdp5 enablement for sdm630/sdm636/sdm66 tegra: - video capture prep support - reflection support mediatek: - convert mtk_dsi to bridge API meson: - FBC support sun4i: - iommu support rockchip: - register locking fix - per-pixel alpha support PX30 VOP mgag200: - ported to simple and shmem helpers - device init cleanups - use managed pci functions - dropped hw cursor support ast: - use managed pci functions - use managed VRAM helpers - rework cursor support malidp: - dev_groups support hibmc: - refactor hibmc_drv_vdac: vc4: - create TXP CRTC imx: - error path fixes and cleanups etnaviv: - clock handling and error handling cleanups - use pin_user_pages" * tag 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm: (1747 commits) drm/msm: use kthread_create_worker instead of kthread_run drm/msm/mdp5: Add MDP5 configuration for SDM636/660 drm/msm/dsi: Add DSI configuration for SDM660 drm/msm/mdp5: Add MDP5 configuration for SDM630 drm/msm/dsi: Add phy configuration for SDM630/636/660 drm/msm/a6xx: add A640/A650 hwcg drm/msm/a6xx: hwcg tables in gpulist drm/msm/dpu: add SM8250 to hw catalog drm/msm/dpu: add SM8150 to hw catalog drm/msm/dpu: intf timing path for displayport drm/msm/dpu: set missing flush bits for INTF_2 and INTF_3 drm/msm/dpu: don't use INTF_INPUT_CTRL feature on sdm845 drm/msm/dpu: move some sspp caps to dpu_caps drm/msm/dpu: update UBWC config for sm8150 and sm8250 drm/msm/dpu: use right setup_blend_config for sm8150 and sm8250 drm/msm/a6xx: set ubwc config for A640 and A650 drm/msm/adreno: un-open-code some packets drm/msm: sync generated headers drm/msm/a6xx: add build_bw_table for A640/A650 drm/msm/a6xx: fix crashstate capture for A650 ...
2020-07-27drm/dbi: Fix SPI Type 1 (9-bit) transferPaul Cercueil1-1/+1
The function mipi_dbi_spi1_transfer() will transfer its payload as 9-bit data, the 9th (MSB) bit being the data/command bit. In order to do that, it unpacks the 8-bit values into 16-bit values, then sets the 9th bit if the byte corresponds to data, clears it otherwise. The 7 MSB are padding. The array of now 16-bit values is then passed to the SPI core for transfer. This function was broken since its introduction, as the length of the SPI transfer was set to the payload size before its conversion, but the payload doubled in size due to the 8-bit -> 16-bit conversion. Fixes: 02dd95fe3169 ("drm/tinydrm: Add MIPI DBI support") Cc: <stable@vger.kernel.org> # 5.4+ Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200703141341.1266263-1-paul@crapouillou.net
2020-07-20drm: core: Convert device logging to drm_* functions.Suraj Upadhyay1-4/+3
Convert device logging with dev_* functions into drm_* functions. The patch has been generated with the coccinelle script below. The script focuses on instances of dev_* functions where the drm device context is clearly visible in its arguments. @@expression E1; expression list E2; @@ -dev_warn(E1->dev, E2) +drm_warn(E1, E2) @@expression E1; expression list E2; @@ -dev_info(E1->dev, E2) +drm_info(E1, E2) @@expression E1; expression list E2; @@ -dev_err(E1->dev, E2) +drm_err(E1, E2) @@expression E1; expression list E2; @@ -dev_info_once(E1->dev, E2) +drm_info_once(E1, E2) @@expression E1; expression list E2; @@ -dev_notice_once(E1->dev, E2) +drm_notice_once(E1, E2) @@expression E1; expression list E2; @@ -dev_warn_once(E1->dev, E2) +drm_warn_once(E1, E2) @@expression E1; expression list E2; @@ -dev_err_once(E1->dev, E2) +drm_err_once(E1, E2) @@expression E1; expression list E2; @@ -dev_err_ratelimited(E1->dev, E2) +drm_err_ratelimited(E1, E2) @@expression E1; expression list E2; @@ -dev_dbg(E1->dev, E2) +drm_dbg(E1, E2) Signed-off-by: Suraj Upadhyay <usuraj35@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200718150955.GA23103@blackclown
2020-06-24drm/mipi-dbi: Remove ->enabledDaniel Vetter1-10/+6
The atomic helpers try really hard to not lose track of things, duplicating enabled tracking in the driver is at best confusing. Double-enabling or disabling is a bug in atomic helpers. In the fb_dirty function we can just assume that the fb always exists, simple display pipe helpers guarantee that the crtc is only enabled together with the output, so we always have a primary plane around. Now in the update function we need to be a notch more careful, since that can also get called when the crtc is off. And we don't want to upload frames when that's the case, so filter that out too. Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: David Lechner <david@lechnology.com> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> 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: Daniel Vetter <daniel@ffwll.ch> Cc: David Lechner <david@lechnology.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200612160056.2082681-7-daniel.vetter@ffwll.ch
2020-05-26drm/format-helper: Add drm_fb_swab()Noralf Trønnes1-1/+1
This replaces drm_fb_swab16() with drm_fb_swab() supporting 16 and 32-bit. Also make pixel line caching optional. v2: - Bail out on cpp != 2 && 4 (Sam) Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200509141619.32970-8-noralf@tronnes.org
2020-03-26drm/mipi-dbi: Drop explicit drm_mode_config_cleanup callDaniel Vetter1-17/+1
Allows us to drop the drm_driver.release callback from all drivers, and remove the mipi_dbi_release() function. This is made possible by a preceeding patch which added a drmm_ cleanup action to drm_mode_config_init(), hence all we need to do to ensure that drm_mode_config_cleanup() is run on final drm_device cleanup is check the new error code for _init(). v2: Explain why this cleanup is possible (Laurent). v3: Use drmm_mode_config_init() for more clarity (Sam, Thomas) Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> (v2) Tested-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> 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: Daniel Vetter <daniel@ffwll.ch> Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Cc: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-49-daniel.vetter@ffwll.ch
2020-03-26drm/mipi-dbi: Move drm_mode_config_init into mipi libraryDaniel Vetter1-0/+4
7/7 drivers agree that's the right choice, let's do this. This avoids duplicating the same old error checking code over all 7 drivers, which is the motivation here. Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> 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: Daniel Vetter <daniel@ffwll.ch> Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Cc: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-48-daniel.vetter@ffwll.ch
2020-03-26drm: Garbage collect drm_dev_finiDaniel Vetter1-1/+0
It has become empty. Given the few users I figured not much point splitting this up. v2: Rebase over i915 changes. v3: Rebase over patch split fix. Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-26-daniel.vetter@ffwll.ch
2020-03-26drm/mipi_dbi: Use drmm_add_final_kfree in all driversDaniel Vetter1-3/+0
They all share mipi_dbi_release so we need to switch them all together. With this we can drop the final kfree from the release function. Aside, I think we could perhaps have a tiny additional helper for these mipi_dbi drivers, the first few lines around devm_drm_dev_init are all the same (except for the drm_driver pointer). Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Noralf Trønnes <noralf@tronnes.org> 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: Daniel Vetter <daniel@ffwll.ch> Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Cc: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-6-daniel.vetter@ffwll.ch
2020-03-21drm/mipi-dbi: Make mipi_dbi_command_stackbuf() data parameter constGeert Uytterhoeven1-1/+2
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
2020-03-18drm: convert .debugfs_init() hook to return void.Wambui Karuga1-5/+1
As a result of commit 987d65d01356 (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.html 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/20200310133121.27913-18-wambui.karugax@gmail.com
2020-01-30drm/mipi-dbi: Remove sending of vblank eventThomas Zimmermann1-9/+0
The atomic helpers automatically send out fake VBLANK events if no vblanking has been initialized. Remove the sending code from the driver. v4: * separate commit from core vblank changes Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200129120531.6891-9-tzimmermann@suse.de
2020-01-19drm/mipi_dbi: Add support for display offsetsGeert Uytterhoeven1-10/+20
If the resolution of the TFT display is smaller than the maximum resolution supported by the display controller, the display may be connected to the driver output arrays with a horizontal and/or vertical offset, leading to a shifted image. Add support for specifying these offsets. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200115124548.3951-4-geert+renesas@glider.be
2020-01-02drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank()Geert Uytterhoeven1-2/+2
When configuring the frame memory window, the last column and row numbers are written to the column resp. page address registers. These numbers are thus one less than the actual window width resp. height. While this is handled correctly in mipi_dbi_fb_dirty() since commit 03ceb1c8dfd1e293 ("drm/tinydrm: Fix setting of the column/page end addresses."), it is not in mipi_dbi_blank(). The latter still forgets to subtract one when calculating the most significant bytes of the column and row numbers, thus programming wrong values when the display width or height is a multiple of 256. Fixes: 02dd95fe31693626 ("drm/tinydrm: Add MIPI DBI support") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191230130604.31006-1-geert+renesas@glider.be
2019-10-22drm/mipi_dbi: Use simple right shift instead of double negationAndy Shevchenko1-1/+1
GCC complains about dubious bitwise OR operand: drivers/gpu/drm/drm_mipi_dbi.c:1024:49: warning: dubious: x | !y CC [M] drivers/gpu/drm/drm_mipi_dbi.o As long as buffer is consist of byte (u8) values, we may use simple right shift and satisfy compiler. It also reduces amount of operations needed. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191017114912.61522-1-andriy.shevchenko@linux.intel.com
2019-10-02drm/print: add drm_debug_enabled()Jani Nikula1-2/+2
Add helper to check if a drm debug category is enabled. Convert drm core to use it. No functional changes. v2: Move unlikely() to drm_debug_enabled() (Eric) v3: Keep unlikely() when combined with other conditions (Eric) Cc: Eric Engestrom <eric@engestrom.ch> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Eric Engestrom <eric@engestrom.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191001140614.26909-1-jani.nikula@intel.com
2019-09-06drm: Use EOPNOTSUPP, not ENOTSUPPDaniel Vetter1-1/+1
- it's what we recommend in our docs: https://dri.freedesktop.org/docs/drm/gpu/drm-uapi.html#recommended-ioctl-return-values - it's the overwhelmingly used error code for "operation not supported", at least in drm core (slightly less so in drivers): $ git grep EOPNOTSUPP -- drivers/gpu/drm/*c | wc -l 83 $ git grep ENOTSUPP -- drivers/gpu/drm/*c | wc -l 5 - include/linux/errno.h makes it fairly clear that these are for nfsv3 (plus they also have error codes above 512, which is the block with some special behaviour ...) /* Defined for the NFSv3 protocol */ If the above isn't reflecting current practice, then I guess we should at least update the docs. Noralf commented: Ben Hutchings made this comment[1] in a thread about use of ENOTSUPP in drivers: glibc's strerror() returns these strings for ENOTSUPP and EOPNOTSUPP respectively: "Unknown error 524" "Operation not supported" So at least for errors returned to userspace EOPNOTSUPP makes sense. José asked: > Hopefully this will not break any userspace None of the functions in drm_edid.c affected by this reach userspace, it's all driver internal. Same for the mipi function, that error code should be handled by drivers. Drivers are supposed to remap "the hw is on fire" to EIO when reporting up to userspace, but I think if a driver sees this it would be a driver bug. v2: Augment commit message with comments from Noralf and José Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Acked-by: Noralf Trønnes <noralf@tronnes.org> Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Sean Paul <sean@poorly.run> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Andres Rodriguez <andresx7@gmail.com> Cc: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190904143942.31756-1-daniel.vetter@ffwll.ch
2019-08-26drm/mipi-dbi: fix a loop in debugfs codeDan Carpenter1-2/+1
This code will likely crash if we try to do a zero byte write. The code looks like this: /* strip trailing whitespace */ for (i = count - 1; i > 0; i--) if (isspace(buf[i])) ... We're writing zero bytes so count = 0. You would think that "count - 1" would be negative one, but because "i" is unsigned it is a large positive numer instead. The "i > 0" condition is true and the "buf[i]" access will be out of bounds. The fix is to make "i" signed and now everything works as expected. The upper bound of "count" is capped in __kernel_write() at MAX_RW_COUNT so we don't have to worry about it being higher than INT_MAX. Fixes: 02dd95fe3169 ("drm/tinydrm: Add MIPI DBI support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> [noralf: Adjust title] Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190821072456.GJ26957@mwanda
2019-07-25drm/tinydrm: Move mipi-dbiNoralf Trønnes1-0/+1330
This moves mipi-dbi to be a core helper with the name drm_mipi_dbi. Fixup include's in drivers. Move the docs entry and delete tinydrm.rst. Delete the last tinydrm todo entry. v2: Make DRM_MIPI_DBI tristate to enable it being built as a module. Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: David Lechner <david@lechnology.com> Acked-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20190722104312.16184-9-noralf@tronnes.org