[PATCH] staging: fbtft: add support for a device tree of backlight.
flat view
STALE437d
From: <hidden>
Date: 2025-07-26 00:04:22
Also in:
linux-staging, stable
Subsystem:
fbtft framebuffer drivers, staging subsystem, the rest · Maintainers:
Andy Shevchenko, Greg Kroah-Hartman, Linus Torvalds
From: Chali Anis <redacted> Support the of backlight from device tree and keep compatibility for the legacy gpio backlight. Cc: stable@vger.kernel.org Signed-off-by: Chali Anis <redacted> --- drivers/staging/fbtft/fbtft-core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index da9c64152a60..5f0220dbe397 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c@@ -170,6 +170,18 @@ void fbtft_register_backlight(struct fbtft_par *par) struct backlight_device *bd; struct backlight_properties bl_props = { 0, }; + bd = devm_of_find_backlight(par->info->device); + if (IS_ERR(bd)) { + dev_warn(par->info->device, + "cannot find of backlight device (%ld), trying legacy\n", + PTR_ERR(bd)); + } + + if (bd) { + par->info->bl_dev = bd; + return; + } + if (!par->gpio.led[0]) { fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s(): led pin not set, exiting.\n", __func__);
--
2.34.1