[PATCH 16/25] drm: kirin: Move plane number and primay plane in driver data

[John Stultz]

From: Xu YiPing <xuyiping at hisilicon.com>

As part of refactoring the kirin driver to better support
different hardware revisions, this patch moves the number of
planes and the primary plane value to the kirin_drm_data
structure

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

Cc: Xinliang Liu <z.liuxinliang at hisilicon.com>
Cc: Rongrong Zou <zourongrong at gmail.com>
Cc: Xinwei Kong <kong.kongxinwei at hisilicon.com>
Cc: Chen Feng <puck.chen at hisilicon.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: dri-devel <dri-devel at lists.freedesktop.org>
Signed-off-by: Xu YiPing <xuyiping at hisilicon.com>
[jstultz: Reworded comit message]
Signed-off-by: John Stultz <john.stultz at linaro.org>
---
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 21 +++++++++++++--------
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h |  2 ++
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index 0e68257..b6b1da6 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -35,7 +35,6 @@
 #include "kirin_drm_drv.h"
 #include "kirin_ade_reg.h"
 
-#define PRIMARY_CH	ADE_CH1 /* primary plane */
 #define OUT_OVLY	ADE_OVLY2 /* output overlay compositor */
 #define ADE_DEBUG	1
 
@@ -991,7 +990,7 @@ static int ade_drm_init(struct platform_device *pdev)
 	struct kirin_plane *kplane;
 	enum drm_plane_type type;
 	int ret;
-	int i;
+	u32 ch;
 
 	ade = devm_kzalloc(dev->dev, sizeof(*ade), GFP_KERNEL);
 	if (!ade) {
@@ -1015,12 +1014,15 @@ static int ade_drm_init(struct platform_device *pdev)
 	 * TODO: Now only support primary plane, overlay planes
 	 * need to do.
 	 */
-	for (i = 0; i < ADE_CH_NUM; i++) {
-		kplane = &ade->planes[i];
-		kplane->ch = i;
+	for (ch = 0; ch < ade_driver_data.num_planes; ch++) {
+		kplane = &ade->planes[ch];
+		kplane->ch = ch;
 		kplane->hw_ctx = ctx;
-		type = i == PRIMARY_CH ? DRM_PLANE_TYPE_PRIMARY :
-			DRM_PLANE_TYPE_OVERLAY;
+
+		if (ch == ade_driver_data.prim_plane)
+			type = DRM_PLANE_TYPE_PRIMARY;
+		else
+			type = DRM_PLANE_TYPE_OVERLAY;
 
 		ret = ade_plane_init(dev, kplane, type);
 		if (ret)
@@ -1028,7 +1030,8 @@ static int ade_drm_init(struct platform_device *pdev)
 	}
 
 	/* crtc init */
-	ret = ade_crtc_init(dev, &kcrtc->base, &ade->planes[PRIMARY_CH].base);
+	ret = ade_crtc_init(dev, &kcrtc->base,
+				&ade->planes[ade_driver_data.prim_plane].base);
 	if (ret)
 		return ret;
 
@@ -1047,6 +1050,8 @@ static const struct drm_mode_config_funcs ade_mode_config_funcs = {
 };
 
 struct kirin_drm_data ade_driver_data = {
+	.num_planes = ADE_CH_NUM,
+	.prim_plane = ADE_CH1,
 	.channel_formats = channel_formats,
 	.channel_formats_cnt = ARRAY_SIZE(channel_formats),
 	.crtc_helper_funcs = &ade_crtc_helper_funcs,
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index 700a203..59fc888 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -41,6 +41,8 @@ struct kirin_plane {
 struct kirin_drm_data {
 	const u32 *channel_formats;
 	u32 channel_formats_cnt;
+	u32 num_planes;
+	u32 prim_plane;
 
 	const struct drm_crtc_helper_funcs *crtc_helper_funcs;
 	const struct drm_crtc_funcs *crtc_funcs;
-- 
2.7.4