linux.git/drivers/gpio/gpio-waveshare-dsi.c, branch master Linux kernel source tree gpio: add GPIO controller found on Waveshare DSI TOUCH panels 2026-05-11T07:56:28+00:00 Dmitry Baryshkov dmitry.baryshkov@oss.qualcomm.com 2026-05-07T09:01:33+00:00 79f44c8acfe66ff8cbed5626e2535245cfcf43cf The Waveshare DSI TOUCH family of panels has separate on-board GPIO controller, which controls power supplies to the panel and the touch screen and provides reset pins for both the panel and the touchscreen. Also it provides a simple PWM controller for panel backlight. Add support for this GPIO controller. Tested-by: Riccardo Mereu <r.mereu@arduino.cc> Reviewed-by: Linus Walleij <linusw@kernel.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Link: https://patch.msgid.link/20260507-waveshare-dsi-touch-v5-2-d2ac7ccc22d4@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> 
The Waveshare DSI TOUCH family of panels has separate on-board GPIO
controller, which controls power supplies to the panel and the touch
screen and provides reset pins for both the panel and the touchscreen.
Also it provides a simple PWM controller for panel backlight. Add
support for this GPIO controller.

Tested-by: Riccardo Mereu <r.mereu@arduino.cc>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20260507-waveshare-dsi-touch-v5-2-d2ac7ccc22d4@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>