| From: |
| Amit Barzilai <amit.barzilai22-AT-gmail.com> |
| To: |
| maarten.lankhorst-AT-linux.intel.com, mripard-AT-kernel.org, tzimmermann-AT-suse.de, airlied-AT-gmail.com, simona-AT-ffwll.ch |
| Subject: |
| [PATCH 0/2] drm: Add driver for the Solomon SSD1351 OLED controller |
| Date: |
| Wed, 10 Jun 2026 19:44:26 +0300 |
| Message-ID: |
| <20260610164428.180091-1-amit.barzilai22@gmail.com> |
| Cc: |
| javierm-AT-redhat.com, robh-AT-kernel.org, krzk+dt-AT-kernel.org, conor+dt-AT-kernel.org, dri-devel-AT-lists.freedesktop.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Amit Barzilai <amit.barzilai22-AT-gmail.com> |
| Archive-link: |
| Article |
This series adds a new DRM/KMS driver for the Solomon SSD1351, a 128x128
65k-color RGB OLED controller driven over a 4-wire SPI bus. The SSD1351
currently has no DRM driver; the only in-tree support is the legacy fbtft
fb_ssd1351.
The driver advertises XRGB8888 to userspace and converts to big-endian
RGB565 on flush via drm_fb_xrgb8888_to_rgb565be(), building on the GEM
SHMEM and atomic modeset/shadow-plane helpers with damage-clipped partial
updates.
The SSD1351 is implemented as a standalone driver rather than as part of
ssd130x. ssd130x converts XRGB8888 down to a packed <= 8bpp hardware
format (mono, grayscale, or 256-colour RGB332); the SSD1351 is driven in
its native 65k-colour RGB565 and does not fit that pixel pipeline.
For the record, the generic mipi_dbi helpers do not apply either: the
SSD1351 pixel path uses non-DCS opcodes (window 0x15/0x75 and write-RAM
0x5c rather than DCS 0x2a/0x2b/0x2c).
Smoke-tested on a Raspberry Pi 4 driving a 128x128 SSD1351 panel: the
display initialises and shows correct colours. The panel's sub-pixel
colour order is set in the controller's remap register, hardcoded to match
the tested module (as the ili9341/ili9163/mi0283qt tinydrm drivers do for
their panels).
Patch 1 adds the device tree binding; patch 2 adds the driver together
with the Kconfig/Makefile glue and a MAINTAINERS entry.
Amit Barzilai (2):
dt-bindings: display: Add Solomon SSD1351 OLED controller
drm/solomon: Add SSD1351 OLED display driver
.../bindings/display/solomon,ssd1351.yaml | 47 ++
MAINTAINERS | 7 +
drivers/gpu/drm/solomon/Kconfig | 14 +
drivers/gpu/drm/solomon/Makefile | 1 +
drivers/gpu/drm/solomon/ssd1351.c | 556 ++++++++++++++++++
5 files changed, 625 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/solomon,ssd1351.yaml
create mode 100644 drivers/gpu/drm/solomon/ssd1351.c
base-commit: 83e8d8bbffa8161e94f3aeee4dd09a35062a78c8
--
2.54.0
