drm/exynos/mixer: embed manager into private context

exynos_drm_manager is used by internal Exynos DRM framework for
representing crtc. As it should be mapped 1:1 to fimd private context
it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple mixer devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index a41c84e..1b1fd82 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -40,8 +40,6 @@
 #include "exynos_drm_iommu.h"
 #include "exynos_mixer.h"
 
-#define get_mixer_manager(dev) platform_get_drvdata(to_platform_device(dev))
-
 #define MIXER_WIN_NR           3
 #define MIXER_DEFAULT_WIN      0
 
@@ -86,6 +84,7 @@ enum mixer_version_id {
 };
 
 struct mixer_context {
+       struct exynos_drm_manager manager;
        struct platform_device *pdev;
        struct device           *dev;
        struct drm_device       *drm_dev;
@@ -1187,11 +1186,6 @@ static struct exynos_drm_manager_ops mixer_manager_ops = {
        .win_disable            = mixer_win_disable,
 };
 
-static struct exynos_drm_manager mixer_manager = {
-       .type                   = EXYNOS_DISPLAY_TYPE_HDMI,
-       .ops                    = &mixer_manager_ops,
-};
-
 static struct mixer_drv_data exynos5420_mxr_drv_data = {
        .version = MXR_VER_128_0_0_184,
        .is_vp_enabled = 0,
@@ -1249,48 +1243,17 @@ MODULE_DEVICE_TABLE(of, mixer_match_types);
 
 static int mixer_bind(struct device *dev, struct device *manager, void *data)
 {
-       struct platform_device *pdev = to_platform_device(dev);
+       struct mixer_context *ctx = dev_get_drvdata(dev);
        struct drm_device *drm_dev = data;
-       struct mixer_context *ctx;
-       struct mixer_drv_data *drv;
        int ret;
 
-       dev_info(dev, "probe start\n");
-
-       ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
-       if (!ctx) {
-               DRM_ERROR("failed to alloc mixer context.\n");
-               return -ENOMEM;
-       }
-
-       mutex_init(&ctx->mixer_mutex);
-
-       if (dev->of_node) {
-               const struct of_device_id *match;
-               match = of_match_node(mixer_match_types, dev->of_node);
-               drv = (struct mixer_drv_data *)match->data;
-       } else {
-               drv = (struct mixer_drv_data *)
-                       platform_get_device_id(pdev)->driver_data;
-       }
-
-       ctx->pdev = pdev;
-       ctx->dev = dev;
-       ctx->vp_enabled = drv->is_vp_enabled;
-       ctx->has_sclk = drv->has_sclk;
-       ctx->mxr_ver = drv->version;
-       init_waitqueue_head(&ctx->wait_vsync_queue);
-       atomic_set(&ctx->wait_vsync_event, 0);
-
-       mixer_manager.ctx = ctx;
-       ret = mixer_initialize(&mixer_manager, drm_dev);
+       ret = mixer_initialize(&ctx->manager, drm_dev);
        if (ret)
                return ret;
 
-       platform_set_drvdata(pdev, &mixer_manager);
-       ret = exynos_drm_crtc_create(&mixer_manager);
+       ret = exynos_drm_crtc_create(&ctx->manager);
        if (ret) {
-               mixer_mgr_remove(&mixer_manager);
+               mixer_mgr_remove(&ctx->manager);
                return ret;
        }
 
@@ -1301,11 +1264,9 @@ static int mixer_bind(struct device *dev, struct device *manager, void *data)
 
 static void mixer_unbind(struct device *dev, struct device *master, void *data)
 {
-       struct exynos_drm_manager *mgr = dev_get_drvdata(dev);
+       struct mixer_context *ctx = dev_get_drvdata(dev);
 
-       dev_info(dev, "remove successful\n");
-
-       mixer_mgr_remove(mgr);
+       mixer_mgr_remove(&ctx->manager);
 
        pm_runtime_disable(dev);
 }
@@ -1317,22 +1278,63 @@ static const struct component_ops mixer_component_ops = {
 
 static int mixer_probe(struct platform_device *pdev)
 {
+       struct device *dev = &pdev->dev;
+       struct mixer_drv_data *drv;
+       struct mixer_context *ctx;
        int ret;
 
+       ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
+       if (!ctx) {
+               DRM_ERROR("failed to alloc mixer context.\n");
+               return -ENOMEM;
+       }
+
+       mutex_init(&ctx->mixer_mutex);
+
+       ctx->manager.type = EXYNOS_DISPLAY_TYPE_HDMI;
+       ctx->manager.ops = &mixer_manager_ops;
+
+       if (dev->of_node) {
+               const struct of_device_id *match;
+
+               match = of_match_node(mixer_match_types, dev->of_node);
+               drv = (struct mixer_drv_data *)match->data;
+       } else {
+               drv = (struct mixer_drv_data *)
+                       platform_get_device_id(pdev)->driver_data;
+       }
+
+       ctx->pdev = pdev;
+       ctx->dev = dev;
+       ctx->vp_enabled = drv->is_vp_enabled;
+       ctx->has_sclk = drv->has_sclk;
+       ctx->mxr_ver = drv->version;
+       init_waitqueue_head(&ctx->wait_vsync_queue);
+       atomic_set(&ctx->wait_vsync_event, 0);
+       ctx->manager.ctx = ctx;
+
+       platform_set_drvdata(pdev, ctx);
+
        ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC,
-                                       mixer_manager.type);
+                                       ctx->manager.type);
        if (ret)
                return ret;
 
        ret = component_add(&pdev->dev, &mixer_component_ops);
-       if (ret)
+       if (ret) {
                exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
+               return ret;
+       }
+
+       pm_runtime_enable(dev);
 
        return ret;
 }
 
 static int mixer_remove(struct platform_device *pdev)
 {
+       pm_runtime_disable(&pdev->dev);
+
        component_del(&pdev->dev, &mixer_component_ops);
        exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);