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drm/dp: Move from u16 to u32 for max in drm_edp_backlight_info 

Use u32 instead of u16 for max variable in drm_edp_backlight_info
since it can now hold max luminance range value which is u32.
We will set this max with max_luminance value when luminance_set is
true.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://lore.kernel.org/r/20250620063445.3603086-5-suraj.kandpal@intel.com
This commit is contained in:
Suraj Kandpal 2025-06-20 12:04:36 +05:30
parent 81fd01414f
commit 08e81e2ded
2 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/display/drm_dp_helper.c
View File

@ -4277,9 +4277,13 @@ drm_edp_backlight_init(struct drm_dp_aux *aux, struct drm_edp_backlight_info *bl
return -EINVAL;
}
ret = drm_edp_backlight_probe_max(aux, bl, driver_pwm_freq_hz, edp_dpcd);
if (ret < 0)
return ret;
if (bl->luminance_set) {
bl->max = max_luminance;
} else {
ret = drm_edp_backlight_probe_max(aux, bl, driver_pwm_freq_hz, edp_dpcd);
if (ret < 0)
return ret;
}
ret = drm_edp_backlight_probe_state(aux, bl, current_mode);
if (ret < 0)

2
include/drm/display/drm_dp_helper.h
View File

@ -844,7 +844,7 @@ drm_dp_has_quirk(const struct drm_dp_desc *desc, enum drm_dp_quirk quirk)
struct drm_edp_backlight_info {
u8 pwmgen_bit_count;
u8 pwm_freq_pre_divider;
u16 max;
u32 max;
bool lsb_reg_used : 1;
bool aux_enable : 1;