drm/vesadrm: Rename vesadrm_set_gamma_lut() to vesadrm_set_color_lut()

Rename vesadrm's gamma helpers in preparation of the upcoming support
for color palettes. Gamma correction and color palettes share the same
hardware features, but the driver's old naming only indicated support
for gamma LUTs.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250714151513.309475-8-tzimmermann@suse.de

Author: tdz

drivers/gpu/drm/sysfb/vesadrm.c

@@ -82,7 +82,7 @@ static struct vesadrm_device *to_vesadrm_device(struct drm_device *dev)
 }
 
 /*
- * Palette
+ * Color LUT
  */
 
 static void vesadrm_vga_cmap_write(struct vesadrm_device *vesa, unsigned int index,
@@ -128,7 +128,7 @@ static void vesadrm_pmi_cmap_write(struct vesadrm_device *vesa, unsigned int ind
 }
 #endif
 
-static void vesadrm_set_gamma_lut(struct drm_crtc *crtc, unsigned int index,
+static void vesadrm_set_color_lut(struct drm_crtc *crtc, unsigned int index,
 				  u16 red, u16 green, u16 blue)
 {
 	struct drm_device *dev = crtc->dev;
@@ -149,15 +149,15 @@ static void vesadrm_fill_gamma_lut(struct vesadrm_device *vesa,
 
 	switch (format->format) {
 	case DRM_FORMAT_XRGB1555:
-		drm_crtc_fill_gamma_555(crtc, vesadrm_set_gamma_lut);
+		drm_crtc_fill_gamma_555(crtc, vesadrm_set_color_lut);
 		break;
 	case DRM_FORMAT_RGB565:
-		drm_crtc_fill_gamma_565(crtc, vesadrm_set_gamma_lut);
+		drm_crtc_fill_gamma_565(crtc, vesadrm_set_color_lut);
 		break;
 	case DRM_FORMAT_RGB888:
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_BGRX8888:
-		drm_crtc_fill_gamma_888(crtc, vesadrm_set_gamma_lut);
+		drm_crtc_fill_gamma_888(crtc, vesadrm_set_color_lut);
 		break;
 	default:
 		drm_warn_once(dev, "Unsupported format %p4cc for gamma correction\n",
@@ -175,15 +175,15 @@ static void vesadrm_load_gamma_lut(struct vesadrm_device *vesa,
 
 	switch (format->format) {
 	case DRM_FORMAT_XRGB1555:
-		drm_crtc_load_gamma_555_from_888(crtc, lut, vesadrm_set_gamma_lut);
+		drm_crtc_load_gamma_555_from_888(crtc, lut, vesadrm_set_color_lut);
 		break;
 	case DRM_FORMAT_RGB565:
-		drm_crtc_load_gamma_565_from_888(crtc, lut, vesadrm_set_gamma_lut);
+		drm_crtc_load_gamma_565_from_888(crtc, lut, vesadrm_set_color_lut);
 		break;
 	case DRM_FORMAT_RGB888:
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_BGRX8888:
-		drm_crtc_load_gamma_888(crtc, lut, vesadrm_set_gamma_lut);
+		drm_crtc_load_gamma_888(crtc, lut, vesadrm_set_color_lut);
 		break;
 	default:
 		drm_warn_once(dev, "Unsupported format %p4cc for gamma correction\n",