kernel/linux.git/drivers/gpu/drm/sitronix, branch v7.0-rc7

drm/sitronix/st7586: fix bad pixel data due to byte swap

2026-03-07T23:14:09+00:00

Correctly set dbi->write_memory_bpw for the ST7586 driver. This driver is for a monochrome display that has an unusual data format, so the default value set in mipi_dbi_spi_init() is not correct simply because this controller is non-standard. Previously, we were using dbi->swap_bytes to make the same sort of workaround, but it was removed in the same commit that added dbi->write_memory_bpw, so we need to use the latter now to have the correct behavior. This fixes every 3 columns of pixels being swapped on the display. There are 3 pixels per byte, so the byte swap caused this effect. Fixes: df3fb27a74a4 ("drm/mipi-dbi: Make bits per word configurable for pixel transfers") Acked-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Signed-off-by: David Lechner Link: https://patch.msgid.link/20260228-drm-mipi-dbi-fix-st7586-byte-swap-v1-1-e78f6c24cd28@baylibre.com

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm: Add driver for Sitronix ST7920 LCD displays

2025-12-15T17:25:09+00:00

Add a new DRM/KMS driver for displays using the Sitronix ST7920 controller connected via the SPI bus. This provides a standard framebuffer interface for these common monochrome LCDs. Reviewed-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Signed-off-by: Iker Pedrosa Signed-off-by: Javier Martinez Canillas Link: https://patch.msgid.link/20251215-st7920-v7-2-36771009ec01@gmail.com

drm/sitronix/st7571-spi: add support for SPI interface

2025-12-15T12:49:40+00:00

Add support for ST7561/ST7571 connected to SPI bus. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-6-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas

drm/sitronix/st7571: split up the driver into a common and an i2c part

2025-12-15T12:49:40+00:00

Split up the driver to make it possible to add support for hw interfaces other than I2C. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-5-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas

drm/sitronix/st7571-i2c: make probe independent of hw interface

2025-12-15T12:49:40+00:00

Create an interface independent layer for the probe function. This is to make it possible to add support for other interfaces. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-4-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas

drm/sitronix/st7571-i2c: move common structures to st7571.h

2025-12-15T12:49:40+00:00

Move all structures that will be common for all interfaces (SPI/I2C) to a separate header file. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-3-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas

drm/sitronix/st7571-i2c: add 'struct device' to st7571_device

2025-12-15T12:49:40+00:00

Keep a copy of the device structure instead of referring to i2c_client. This is a preparation step to separate the generic part from all i2c stuff. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-2-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas

drm/sitronix/st7571-i2c: rename 'struct drm_device' in st7571_device

2025-12-15T12:49:39+00:00

Rename st7571_device.dev to st7571_device.drm in preparation to introduce a 'struct device' member to this structure. Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson Link: https://patch.msgid.link/20251215-st7571-split-v3-1-d5f3205c3138@gmail.com Signed-off-by: Javier Martinez Canillas