linux/drivers/gpu/drm/tiny, branch v6.3

Merge tag 'drm-misc-fixes-2023-02-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

2023-03-06T19:42:34Z

A fix for nouveau preventing the system shutdown and one for a build warning, and NULL pointer dereference fix for cirrus. Signed-off-by: Dave Airlie From: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20230223083839.5gtmu6i42bnj7pfh@houat

drm/cirrus: NULL-check pipe->plane.state->fb in cirrus_pipe_update()

2023-02-17T10:32:10Z

After having been compared to NULL value at cirrus.c:455, pointer 'pipe->plane.state->fb' is passed as 1st parameter in call to function 'cirrus_fb_blit_rect' at cirrus.c:461, where it is dereferenced at cirrus.c:316. Found by Linux Verification Center (linuxtesting.org) with SVACE. v2: * aligned commit message to line-length limits Signed-off-by: Alexandr Sapozhnikov Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20230215171549.16305-1-alsp705@gmail.com

drm/simpledrm: Fix an NULL vs IS_ERR() bug

2023-02-01T10:16:46Z

The devm_memremap() function doesn't return NULL, it returns error pointers. Fixes: 9a10c7e6519b ("drm/simpledrm: Add support for system memory framebuffers") Signed-off-by: Dan Carpenter Reviewed-by: Thomas Zimmermann Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/Y9JHzImRcUaa0mi1@kili (cherry picked from commit e566507bf2f460967f53030ef84b67ef26dcaf8e) Signed-off-by: Thomas Zimmermann

drm/simpledrm: Add support for system memory framebuffers

2023-01-23T14:02:28Z

Simple framebuffers can be set up in system memory, which cannot be requested and/or I/O remapped using the I/O resource helpers. Add a separate code path that obtains system memory framebuffers from the reserved memory region referenced in the memory-region property. Reviewed-by: Thomas Zimmermann Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20230120173103.4002342-6-thierry.reding@gmail.com

drm/simpledrm: Use struct iosys_map consistently

2023-01-23T14:02:13Z

The majority of the driver already uses struct iosys_map to encapsulate accesses to I/O remapped vs. system memory. Accesses via the screen base pointer still use __iomem annotations, which can lead to inconsistencies and conflicts with subsequent patches. Convert the screen base to a struct iosys_map as well for consistency and to avoid these issues. Reviewed-by: Thomas Zimmermann Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20230120173103.4002342-5-thierry.reding@gmail.com

drm/fb-helper: Replace bpp/depth parameter by color mode

2023-01-06T13:21:56Z

Replace the combination of bpp and depth with a single color-mode argument. Handle special cases in simpledrm and ofdrm. Hard-code XRGB8888 as fallback format for cases where no given format works. The color-mode argument accepts the same values as the kernel's video parameter. These are mostly bpp values between 1 and 32. The exceptions are 15, which has a color depth of 15 and a bpp value of 16; and 32, which has a color depth of 24 and a bpp value of 32. v4: * add back lost test for bpp_specified (Maira) * add Fixes tag (Daniel) v3: * fix ofdrm build (Maxime) v2: * minimize changes (Daniel) * use drm_driver_legacy_fb_format() (Daniel) Signed-off-by: Thomas Zimmermann Tested-by: Maíra Canal # vc4 and vkms Acked-by: Daniel Vetter Fixes: 37c90d589dc0 ("drm/fb-helper: Fix single-probe color-format selection") Cc: Thomas Zimmermann Cc: Javier Martinez Canillas Cc: Maarten Lankhorst Cc: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20230106112324.22055-1-tzimmermann@suse.de

drm/format-helper: Simplify drm_fb_build_fourcc_list()

2023-01-03T13:27:39Z

The DRM helper drm_fb_build_fourcc_list() creates a list of color formats for primary planes of the generic drivers. Simplify the helper: - It used to mix and filter native and emulated formats as provided by the driver. Now the only emulated format is XRGB8888, which is required as fallback by legacy software. Drop support for emulating any other formats. - Also convert alpha formats to their non-alpha counterparts. Generic drivers don't support primary planes with alpha formats and some DTs incorrectly advertise alpha channels for non-alpha hardware. So only export non-alpha formats for primary planes. With the simplified helper, scrap format lists of the affected generic drivers. All they need is the firmware buffer's native format, from which the helper creates the list of color formats. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-13-tzimmermann@suse.de

drm/tiny: ili9486: Do not assume 8-bit only SPI controllers

2023-01-02T10:02:08Z

The pixel data for the ILI9486 is always 16-bits wide and it must be sent over the SPI bus. When the controller is only able to deal with 8-bit transfers, this 16-bits data needs to be swapped before the sending to account for the big endian bus, this is on the contrary not needed when the SPI controller already supports 16-bits transfers. The decision about swapping the pixel data or not is taken in the MIPI DBI code by probing the controller capabilities: if the controller only suppors 8-bit transfers the data is swapped, otherwise it is not. This swapping/non-swapping is relying on the assumption that when the controller does support 16-bit transactions then the data is sent unswapped in 16-bits-per-word over SPI. The problem with the ILI9486 driver is that it is forcing 8-bit transactions also for controllers supporting 16-bits, violating the assumption and corrupting the pixel data. Align the driver to what is done in the MIPI DBI code by adjusting the transfer size to the maximum allowed by the SPI controller. Reviewed-by: Neil Armstrong Signed-off-by: Carlo Caione Reviewed-by: Kamlesh Gurudasani Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20221116-s905x_spi_ili9486-v4-2-f86b4463b9e4@baylibre.com

drm/tiny: ili9486: Enable driver module autoloading

2023-01-02T10:02:08Z

SPI devices use the spi_device_id for module autoloading even on systems using device tree. Add the spi_device_id entry to enable autoloading for the 3.5inch RPi Display (rpi-lcd-35 and piscreen). Reviewed-by: Neil Armstrong Signed-off-by: Carlo Caione Reviewed-by: Kamlesh Gurudasani Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20221116-s905x_spi_ili9486-v4-1-f86b4463b9e4@baylibre.com

drm/tiny: panel-mipi-dbi: Read I/O supply from DT

2022-12-14T13:58:09Z

To support platforms with a separate I/O voltage supply, set the new io_regulator property along with the regulator property of the DBI device. Read the I/O supply from a new "io-supply" device tree property. Signed-off-by: Otto Pflüger Reviewed-by: Noralf Trønnes Signed-off-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20221201160245.2093816-3-otto.pflueger@abscue.de