[PATCH v4 13/14] video: backlight: lm3533_bl: Implement backlight_scale property
From: Svyatoslav Ryhel <hidden>
Date: 2026-06-06 04:58:49
Also in:
dri-devel, linux-devicetree, linux-iio, linux-leds, lkml
Subsystem:
backlight class/subsystem, framebuffer layer, the rest · Maintainers:
Lee Jones, Daniel Thompson, Jingoo Han, Helge Deller, Linus Torvalds
Since the device supports linear and non-linear modes, implement the backlight_scale property to describe this state. Signed-off-by: Svyatoslav Ryhel <redacted> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> --- drivers/video/backlight/lm3533_bl.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 4f8cde9f290d..2aa4b86042ff 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c@@ -142,6 +142,7 @@ static ssize_t store_linear(struct device *dev, struct device_attribute *attr, { struct lm3533_bl *bl = dev_get_drvdata(dev); int ctrlbank = lm3533_bl_get_ctrlbank_id(bl); + struct backlight_device *bd = bl->bd; unsigned long linear; int ret;
@@ -153,6 +154,9 @@ static ssize_t store_linear(struct device *dev, struct device_attribute *attr, if (ret) return ret; + bd->props.scale = linear ? BACKLIGHT_SCALE_LINEAR : + BACKLIGHT_SCALE_NON_LINEAR; + return len; }
@@ -290,6 +294,8 @@ static int lm3533_bl_probe(struct platform_device *pdev) bl->linear = device_property_read_bool(&pdev->dev, "ti,linear-mapping-mode"); + props.scale = bl->linear ? BACKLIGHT_SCALE_LINEAR : + BACKLIGHT_SCALE_NON_LINEAR; bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev, bl, &lm3533_bl_ops, &props);
--
2.53.0