drm: kirin: Move channel formats to driver data

As part of refactoring the kirin driver to better support
different hardware revisions, this patch moves the channel
format arrays into the kirin_drm_data structure.

This will make it easier to add support for new devices
via a new kirin_drm_data structure.

Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Xu YiPing <xuyiping@hisilicon.com>
[jstultz: reworded commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190820230626.23253-15-john.stultz@linaro.org

drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c

@@ -76,7 +76,7 @@ static const struct kirin_format ade_formats[] = {
 	{ DRM_FORMAT_ABGR8888, ADE_ABGR_8888 },
 };
 
-static const u32 channel_formats1[] = {
+static const u32 channel_formats[] = {
 	/* channel 1,2,3,4 */
 	DRM_FORMAT_RGB565, DRM_FORMAT_BGR565, DRM_FORMAT_RGB888,
 	DRM_FORMAT_BGR888, DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
@@ -84,19 +84,6 @@ static const u32 channel_formats1[] = {
 	DRM_FORMAT_ABGR8888
 };
 
-u32 ade_get_channel_formats(u8 ch, const u32 **formats)
-{
-	switch (ch) {
-	case ADE_CH1:
-		*formats = channel_formats1;
-		return ARRAY_SIZE(channel_formats1);
-	default:
-		DRM_ERROR("no this channel %d\n", ch);
-		*formats = NULL;
-		return 0;
-	}
-}
-
 /* convert from fourcc format to ade format */
 static u32 ade_get_format(u32 pixel_format)
 {
@@ -908,18 +895,13 @@ static struct drm_plane_funcs ade_plane_funcs = {
 static int ade_plane_init(struct drm_device *dev, struct kirin_plane *kplane,
 			  enum drm_plane_type type)
 {
-	const u32 *fmts;
-	u32 fmts_cnt;
 	int ret = 0;
 
-	/* get  properties */
-	fmts_cnt = ade_get_channel_formats(kplane->ch, &fmts);
-	if (ret)
-		return ret;
-
 	ret = drm_universal_plane_init(dev, &kplane->base, 1,
-				       ade_driver_data.plane_funcs, fmts,
-				       fmts_cnt, NULL, type, NULL);
+				       ade_driver_data.plane_funcs,
+				       ade_driver_data.channel_formats,
+				       ade_driver_data.channel_formats_cnt,
+				       NULL, type, NULL);
 	if (ret) {
 		DRM_ERROR("fail to init plane, ch=%d\n", kplane->ch);
 		return ret;
@@ -1057,6 +1039,8 @@ static void ade_drm_cleanup(struct platform_device *pdev)
 }
 
 struct kirin_drm_data ade_driver_data = {
+	.channel_formats = channel_formats,
+	.channel_formats_cnt = ARRAY_SIZE(channel_formats),
 	.crtc_helper_funcs = &ade_crtc_helper_funcs,
 	.crtc_funcs = &ade_crtc_funcs,
 	.plane_helper_funcs = &ade_plane_helper_funcs,

drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h

@@ -35,6 +35,9 @@ struct kirin_plane {
 
 /* display controller init/cleanup ops */
 struct kirin_drm_data {
+	const u32 *channel_formats;
+	u32 channel_formats_cnt;
+
 	const struct drm_crtc_helper_funcs *crtc_helper_funcs;
 	const struct drm_crtc_funcs *crtc_funcs;
 	const struct drm_plane_helper_funcs *plane_helper_funcs;