drm: Remove duplicate drm_mode_cea_vic()

The same function had already been merged with a different name. Remove
the duplicate one but reuse some of its kerneldoc fragments for the
existing implementation.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/drm_edid.c

@@ -1516,11 +1516,14 @@ u8 *drm_find_cea_extension(struct edid *edid)
 }
 EXPORT_SYMBOL(drm_find_cea_extension);
 
-/*
- * Looks for a CEA mode matching given drm_display_mode.
- * Returns its CEA Video ID code, or 0 if not found.
+/**
+ * drm_match_cea_mode - look for a CEA mode matching given mode
+ * @to_match: display mode
+ *
+ * Returns the CEA Video ID (VIC) of the mode or 0 if it isn't a CEA-861
+ * mode.
  */
-u8 drm_match_cea_mode(struct drm_display_mode *to_match)
+u8 drm_match_cea_mode(const struct drm_display_mode *to_match)
 {
 	struct drm_display_mode *cea_mode;
 	u8 mode;
@@ -2114,22 +2117,3 @@ int drm_add_modes_noedid(struct drm_connector *connector,
 	return num_modes;
 }
 EXPORT_SYMBOL(drm_add_modes_noedid);
-
-/**
- * drm_mode_cea_vic - return the CEA-861 VIC of a given mode
- * @mode: mode
- *
- * RETURNS:
- * The VIC number, 0 in case it's not a CEA-861 mode.
- */
-uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode)
-{
-	uint8_t i;
-
-	for (i = 0; i < drm_num_cea_modes; i++)
-		if (drm_mode_equal(mode, &edid_cea_modes[i]))
-			return i + 1;
-
-	return 0;
-}
-EXPORT_SYMBOL(drm_mode_cea_vic);

drivers/gpu/drm/i915/intel_dp.c

@@ -770,7 +770,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder,
 		 * CEA-861-E - 5.1 Default Encoding Parameters
 		 * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry
 		 */
-		if (bpp != 18 && drm_mode_cea_vic(adjusted_mode) > 1)
+		if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1)
 			intel_dp->color_range = DP_COLOR_RANGE_16_235;
 		else
 			intel_dp->color_range = 0;

drivers/gpu/drm/i915/intel_hdmi.c

@@ -348,7 +348,7 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 			avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_FULL;
 	}
 
-	avi_if.body.avi.VIC = drm_mode_cea_vic(adjusted_mode);
+	avi_if.body.avi.VIC = drm_match_cea_mode(adjusted_mode);
 
 	intel_set_infoframe(encoder, &avi_if);
 }
@@ -781,7 +781,7 @@ bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
 	if (intel_hdmi->color_range_auto) {
 		/* See CEA-861-E - 5.1 Default Encoding Parameters */
 		if (intel_hdmi->has_hdmi_sink &&
-		    drm_mode_cea_vic(adjusted_mode) > 1)
+		    drm_match_cea_mode(adjusted_mode) > 1)
 			intel_hdmi->color_range = SDVO_COLOR_RANGE_16_235;
 		else
 			intel_hdmi->color_range = 0;

drivers/gpu/drm/i915/intel_sdvo.c

@@ -1077,7 +1077,7 @@ static bool intel_sdvo_mode_fixup(struct drm_encoder *encoder,
 	if (intel_sdvo->color_range_auto) {
 		/* See CEA-861-E - 5.1 Default Encoding Parameters */
 		if (intel_sdvo->has_hdmi_monitor &&
-		    drm_mode_cea_vic(adjusted_mode) > 1)
+		    drm_match_cea_mode(adjusted_mode) > 1)
 			intel_sdvo->color_range = SDVO_COLOR_RANGE_16_235;
 		else
 			intel_sdvo->color_range = 0;

include/drm/drm_crtc.h

@@ -1061,7 +1061,7 @@ extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
 				    void *data, struct drm_file *file_priv);
 extern u8 *drm_find_cea_extension(struct edid *edid);
-extern u8 drm_match_cea_mode(struct drm_display_mode *to_match);
+extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
 extern bool drm_detect_hdmi_monitor(struct edid *edid);
 extern bool drm_detect_monitor_audio(struct edid *edid);
 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
@@ -1079,7 +1079,6 @@ extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
 				int GTF_2C, int GTF_K, int GTF_2J);
 extern int drm_add_modes_noedid(struct drm_connector *connector,
 				int hdisplay, int vdisplay);
-extern uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode);
 
 extern int drm_edid_header_is_valid(const u8 *raw_edid);
 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);