drm/exynos: dsi: remove global variable exynos_dsi_display

exynos_dsi_display is used by internal Exynos DRM framework for
representing pair encoder->connecter. As it should be mapped 1:1 to dsi
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 DSI 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_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index f43d258..c0141b6 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -268,6 +268,7 @@ struct exynos_dsi_driver_data {
 };
 
 struct exynos_dsi {
+       struct exynos_drm_display display;
        struct mipi_dsi_host dsi_host;
        struct drm_connector connector;
        struct drm_encoder *encoder;
@@ -1531,10 +1532,6 @@ static struct exynos_drm_display_ops exynos_dsi_display_ops = {
        .dpms = exynos_dsi_dpms
 };
 
-static struct exynos_drm_display exynos_dsi_display = {
-       .type = EXYNOS_DISPLAY_TYPE_LCD,
-       .ops = &exynos_dsi_display_ops,
-};
 MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
 
 /* of_* functions will be removed after merge of of_graph patches */
@@ -1640,28 +1637,28 @@ end:
 static int exynos_dsi_bind(struct device *dev, struct device *master,
                                void *data)
 {
+       struct exynos_drm_display *display = dev_get_drvdata(dev);
+       struct exynos_dsi *dsi = display->ctx;
        struct drm_device *drm_dev = data;
-       struct exynos_dsi *dsi;
        int ret;
 
-       ret = exynos_drm_create_enc_conn(drm_dev, &exynos_dsi_display);
+       ret = exynos_drm_create_enc_conn(drm_dev, display);
        if (ret) {
                DRM_ERROR("Encoder create [%d] failed with %d\n",
-                               exynos_dsi_display.type, ret);
+                         display->type, ret);
                return ret;
        }
 
-       dsi = exynos_dsi_display.ctx;
-
        return mipi_dsi_host_register(&dsi->dsi_host);
 }
 
 static void exynos_dsi_unbind(struct device *dev, struct device *master,
                                void *data)
 {
-       struct exynos_dsi *dsi = exynos_dsi_display.ctx;
+       struct exynos_drm_display *display = dev_get_drvdata(dev);
+       struct exynos_dsi *dsi = display->ctx;
 
-       exynos_dsi_dpms(&exynos_dsi_display, DRM_MODE_DPMS_OFF);
+       exynos_dsi_dpms(display, DRM_MODE_DPMS_OFF);
 
        mipi_dsi_host_unregister(&dsi->dsi_host);
 }
@@ -1673,22 +1670,23 @@ static const struct component_ops exynos_dsi_component_ops = {
 
 static int exynos_dsi_probe(struct platform_device *pdev)
 {
+       struct device *dev = &pdev->dev;
        struct resource *res;
        struct exynos_dsi *dsi;
        int ret;
 
-       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
-                                       exynos_dsi_display.type);
+       dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
+       if (!dsi)
+               return -ENOMEM;
+
+       dsi->display.type = EXYNOS_DISPLAY_TYPE_LCD;
+       dsi->display.ops = &exynos_dsi_display_ops;
+
+       ret = exynos_drm_component_add(dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
+                                      dsi->display.type);
        if (ret)
                return ret;
 
-       dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
-       if (!dsi) {
-               dev_err(&pdev->dev, "failed to allocate dsi object.\n");
-               ret = -ENOMEM;
-               goto err_del_component;
-       }
-
        /* To be checked as invalid one */
        dsi->te_gpio = -ENOENT;