drm/sun4i: de2: Don't return de2_fmt_info struct

Now that de2_fmt_info contains only DRM <-> HW format mapping, it
doesn't make sense to return pointer to structure when searching by DRM
format. Rework that to return only HW format instead.

This doesn't make any functional change.
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-7-jernej.skrabec@siol.net

drivers/gpu/drm/sun4i/sun8i_mixer.c

@@ -27,6 +27,11 @@
 #include "sun8i_vi_layer.h"
 #include "sunxi_engine.h"
 
+struct de2_fmt_info {
+	u32	drm_fmt;
+	u32	de2_fmt;
+};
+
 static const struct de2_fmt_info de2_formats[] = {
 	{
 		.drm_fmt = DRM_FORMAT_ARGB8888,
@@ -230,15 +235,17 @@ static const struct de2_fmt_info de2_formats[] = {
 	},
 };
 
-const struct de2_fmt_info *sun8i_mixer_format_info(u32 format)
+int sun8i_mixer_drm_format_to_hw(u32 format, u32 *hw_format)
 {
 	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(de2_formats); ++i)
-		if (de2_formats[i].drm_fmt == format)
-			return &de2_formats[i];
+		if (de2_formats[i].drm_fmt == format) {
+			*hw_format = de2_formats[i].de2_fmt;
+			return 0;
+		}
 
-	return NULL;
+	return -EINVAL;
 }
 
 static void sun8i_mixer_commit(struct sunxi_engine *engine)

drivers/gpu/drm/sun4i/sun8i_mixer.h

@@ -143,11 +143,6 @@
 #define SUN50I_MIXER_CDC0_EN			0xd0000
 #define SUN50I_MIXER_CDC1_EN			0xd8000
 
-struct de2_fmt_info {
-	u32	drm_fmt;
-	u32	de2_fmt;
-};
-
 /**
  * struct sun8i_mixer_cfg - mixer HW configuration
  * @vi_num: number of VI channels
@@ -207,5 +202,5 @@ sun8i_channel_base(struct sun8i_mixer *mixer, int channel)
 		return DE2_CH_BASE + channel * DE2_CH_SIZE;
 }
 
-const struct de2_fmt_info *sun8i_mixer_format_info(u32 format);
+int sun8i_mixer_drm_format_to_hw(u32 format, u32 *hw_format);
 #endif /* _SUN8I_MIXER_H_ */

drivers/gpu/drm/sun4i/sun8i_ui_layer.c

@@ -174,20 +174,20 @@ static int sun8i_ui_layer_update_formats(struct sun8i_mixer *mixer, int channel,
 					 int overlay, struct drm_plane *plane)
 {
 	struct drm_plane_state *state = plane->state;
-	const struct de2_fmt_info *fmt_info;
 	const struct drm_format_info *fmt;
-	u32 val, ch_base;
+	u32 val, ch_base, hw_fmt;
+	int ret;
 
 	ch_base = sun8i_channel_base(mixer, channel);
 
 	fmt = state->fb->format;
-	fmt_info = sun8i_mixer_format_info(fmt->format);
-	if (!fmt_info || fmt->is_yuv) {
+	ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
+	if (ret || fmt->is_yuv) {
 		DRM_DEBUG_DRIVER("Invalid format\n");
 		return -EINVAL;
 	}
 
-	val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
+	val = hw_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
 	regmap_update_bits(mixer->engine.regs,
 			   SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
 			   SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK, val);

drivers/gpu/drm/sun4i/sun8i_vi_layer.c

@@ -231,20 +231,20 @@ static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
 					 int overlay, struct drm_plane *plane)
 {
 	struct drm_plane_state *state = plane->state;
-	const struct de2_fmt_info *fmt_info;
+	u32 val, ch_base, csc_mode, hw_fmt;
 	const struct drm_format_info *fmt;
-	u32 val, ch_base, csc_mode;
+	int ret;
 
 	ch_base = sun8i_channel_base(mixer, channel);
 
 	fmt = state->fb->format;
-	fmt_info = sun8i_mixer_format_info(fmt->format);
-	if (!fmt_info) {
+	ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
+	if (ret) {
 		DRM_DEBUG_DRIVER("Invalid format\n");
-		return -EINVAL;
+		return ret;
 	}
 
-	val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
+	val = hw_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
 	regmap_update_bits(mixer->engine.regs,
 			   SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
 			   SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);