diff options
Diffstat (limited to 'src/compositor-drm.c')
| -rw-r--r-- | src/compositor-drm.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/compositor-drm.c b/src/compositor-drm.c index ba7e642..fe8ef49 100644 --- a/src/compositor-drm.c +++ b/src/compositor-drm.c @@ -927,7 +927,7 @@ sprite_handle_pending_buffer_destroy(struct wl_listener *listener, sprite->pending_surface = NULL; } -/* returns a value between 1-10 range, where higher is brighter */ +/* returns a value between 0-255 range, where higher is brighter */ static uint32_t drm_get_backlight(struct drm_output *output) { @@ -936,13 +936,13 @@ drm_get_backlight(struct drm_output *output) brightness = backlight_get_brightness(output->backlight); max_brightness = backlight_get_max_brightness(output->backlight); - /* convert it on a scale of 1 to 10 */ - norm = 1 + ((brightness) * 9)/(max_brightness); + /* convert it on a scale of 0 to 255 */ + norm = (brightness * 255)/(max_brightness); return (uint32_t) norm; } -/* values accepted are between 1-10 range */ +/* values accepted are between 0-255 range */ static void drm_set_backlight(struct weston_output *output_base, uint32_t value) { @@ -952,13 +952,13 @@ drm_set_backlight(struct weston_output *output_base, uint32_t value) if (!output->backlight) return; - if (value < 1 || value > 10) + if (value < 0 || value > 255) return; max_brightness = backlight_get_max_brightness(output->backlight); /* get denormalized value */ - new_brightness = ((value - 1) * (max_brightness)) / 9; + new_brightness = (value * max_brightness) / 255; backlight_set_brightness(output->backlight, new_brightness); } |