drm: exynos: hdmi: remove drm common hdmi platform data struct

exynos-drm-hdmi need context pointers from hdmi and mixer. These
pointers were expected from the plf data. Cleaned this dependency
by exporting i/f which are called by hdmi, mixer driver probes
for setting their context.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

4 files changed, 34 insertions, 25 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
index 0584132dc608..85304c46a8cd 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
@@ -29,6 +29,11 @@
 #define get_ctx_from_subdrv(subdrv)     container_of(subdrv,\
                                         struct drm_hdmi_context, subdrv);
 
+/* Common hdmi subdrv needs to access the hdmi and mixer though context.
+* These should be initialied by the repective drivers */
+static struct exynos_drm_hdmi_context *hdmi_ctx;
+static struct exynos_drm_hdmi_context *mixer_ctx;
+
 /* these callback points shoud be set by specific drivers. */
 static struct exynos_hdmi_ops *hdmi_ops;
 static struct exynos_mixer_ops *mixer_ops;
@@ -41,6 +46,18 @@ struct drm_hdmi_context {
         bool    enabled[MIXER_WIN_NR];
 };
 
+void exynos_hdmi_drv_attach(struct exynos_drm_hdmi_context *ctx)
+{
+        if (ctx)
+                hdmi_ctx = ctx;
+}
+
+void exynos_mixer_drv_attach(struct exynos_drm_hdmi_context *ctx)
+{
+        if (ctx)
+                mixer_ctx = ctx;
+}
+
 void exynos_hdmi_ops_register(struct exynos_hdmi_ops *ops)
 {
         DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -303,46 +320,30 @@ static int hdmi_subdrv_probe(struct drm_device *drm_dev,
 {
         struct exynos_drm_subdrv *subdrv = to_subdrv(dev);
         struct drm_hdmi_context *ctx;
-        struct platform_device *pdev = to_platform_device(dev);
-        struct exynos_drm_common_hdmi_pd *pd;
 
         DRM_DEBUG_KMS("%s\n", __FILE__);
 
-        pd = pdev->dev.platform_data;
-
-        if (!pd) {
-                DRM_DEBUG_KMS("platform data is null.\n");
+        if (!hdmi_ctx) {
+                DRM_ERROR("hdmi context not initialized.\n");
                 return -EFAULT;
         }
 
-        if (!pd->hdmi_dev) {
-                DRM_DEBUG_KMS("hdmi device is null.\n");
-                return -EFAULT;
-        }
-
-        if (!pd->mixer_dev) {
-                DRM_DEBUG_KMS("mixer device is null.\n");
+        if (!mixer_ctx) {
+                DRM_ERROR("mixer context not initialized.\n");
                 return -EFAULT;
         }
 
         ctx = get_ctx_from_subdrv(subdrv);
 
-        ctx->hdmi_ctx = (struct exynos_drm_hdmi_context *)
-                                to_context(pd->hdmi_dev);
-        if (!ctx->hdmi_ctx) {
-                DRM_DEBUG_KMS("hdmi context is null.\n");
+        if (!ctx) {
+                DRM_ERROR("no drm hdmi context.\n");
                 return -EFAULT;
         }
 
-        ctx->hdmi_ctx->drm_dev = drm_dev;
-
-        ctx->mixer_ctx = (struct exynos_drm_hdmi_context *)
-                                to_context(pd->mixer_dev);
-        if (!ctx->mixer_ctx) {
-                DRM_DEBUG_KMS("mixer context is null.\n");
-                return -EFAULT;
-        }
+        ctx->hdmi_ctx = hdmi_ctx;
+        ctx->mixer_ctx = mixer_ctx;
 
+        ctx->hdmi_ctx->drm_dev = drm_dev;
         ctx->mixer_ctx->drm_dev = drm_dev;
 
         return 0;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
index d9f9e9fcc2b6..2da5ffd3a059 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
@@ -73,6 +73,8 @@ struct exynos_mixer_ops {
         void (*win_disable)(void *ctx, int zpos);
 };
 
+void exynos_hdmi_drv_attach(struct exynos_drm_hdmi_context *ctx);
+void exynos_mixer_drv_attach(struct exynos_drm_hdmi_context *ctx);
 void exynos_hdmi_ops_register(struct exynos_hdmi_ops *ops);
 void exynos_mixer_ops_register(struct exynos_mixer_ops *ops);
 #endif
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 5caf49f366e3..e6b784d1527d 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -2454,6 +2454,9 @@ static int __devinit hdmi_probe(struct platform_device *pdev)
                 goto err_free_irq;
         }
 
+        /* Attach HDMI Driver to common hdmi. */
+        exynos_hdmi_drv_attach(drm_hdmi_ctx);
+
         /* register specific callbacks to common hdmi. */
         exynos_hdmi_ops_register(&hdmi_ops);
 
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 39d2b95087ae..1a319e4431d8 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1171,6 +1171,9 @@ static int __devinit mixer_probe(struct platform_device *pdev)
                 }
         }
 
+        /* attach mixer driver to common hdmi. */
+        exynos_mixer_drv_attach(drm_hdmi_ctx);
+
         /* register specific callback point to common hdmi. */
         exynos_mixer_ops_register(&mixer_ops);