From 0077e5ed836a01a0c82f23b91afdd38e42ace8b8 Mon Sep 17 00:00:00 2001 From: Svyatoslav Ryhel Date: Fri, 31 Jul 2026 14:36:31 +0300 Subject: [PATCH] video: backlight: lm3533_bl: Implement backlight_scale property Since the device supports linear and non-linear modes, implement the backlight_scale property to describe this state. Signed-off-by: Svyatoslav Ryhel Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260731113632.158440-14-clamor95@gmail.com Signed-off-by: Lee Jones --- 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 666213cab667..adcd6ac7cf22 100644 --- a/drivers/video/backlight/lm3533_bl.c +++ b/drivers/video/backlight/lm3533_bl.c @@ -141,6 +141,7 @@ 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; @@ -152,6 +153,9 @@ 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; } @@ -294,6 +298,8 @@ 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);