drm/radeon: rework legacy backlight control
To better enable sharing with atom backlight control.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 670e991..9910fe4 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -271,13 +271,6 @@
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
-#define MAX_RADEON_LEVEL 0xFF
-
-struct radeon_backlight_privdata {
- struct radeon_encoder *encoder;
- uint8_t negative;
-};
-
static uint8_t radeon_legacy_lvds_level(struct backlight_device *bd)
{
struct radeon_backlight_privdata *pdata = bl_get_data(bd);
@@ -286,13 +279,13 @@
/* Convert brightness to hardware level */
if (bd->props.brightness < 0)
level = 0;
- else if (bd->props.brightness > MAX_RADEON_LEVEL)
- level = MAX_RADEON_LEVEL;
+ else if (bd->props.brightness > RADEON_MAX_BL_LEVEL)
+ level = RADEON_MAX_BL_LEVEL;
else
level = bd->props.brightness;
if (pdata->negative)
- level = MAX_RADEON_LEVEL - level;
+ level = RADEON_MAX_BL_LEVEL - level;
return level;
}
@@ -336,7 +329,7 @@
backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >>
RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
- return pdata->negative ? MAX_RADEON_LEVEL - backlight_level : backlight_level;
+ return pdata->negative ? RADEON_MAX_BL_LEVEL - backlight_level : backlight_level;
}
static const struct backlight_ops radeon_backlight_ops = {
@@ -370,7 +363,7 @@
}
memset(&props, 0, sizeof(props));
- props.max_brightness = MAX_RADEON_LEVEL;
+ props.max_brightness = RADEON_MAX_BL_LEVEL;
props.type = BACKLIGHT_RAW;
bd = backlight_device_register("radeon_bl", &drm_connector->kdev,
pdata, &radeon_backlight_ops, &props);
@@ -449,7 +442,7 @@
}
if (bd) {
- struct radeon_legacy_backlight_privdata *pdata;
+ struct radeon_backlight_privdata *pdata;
pdata = bl_get_data(bd);
backlight_device_unregister(bd);