drm/exynos: added ipp device registration to drm driver

This patch added exynos-drm-ipp platform device registration to the exynos drm
driver. When DT is enabled, platform devices need to be registered within the
driver code. This patch fits the requirement of both DT and Non DT based drm
drivers.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index 1adce07ecb5b..29d2ad314490 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -47,6 +47,9 @@
 #define get_ipp_context(dev)    platform_get_drvdata(to_platform_device(dev))
 #define ipp_is_m2m_cmd(c)       (c == IPP_CMD_M2M)
 
+/* platform device pointer for ipp device. */
+static struct platform_device *exynos_drm_ipp_pdev;
+
 /*
  * A structure of event.
  *
@@ -102,6 +105,30 @@ static LIST_HEAD(exynos_drm_ippdrv_list);
 static DEFINE_MUTEX(exynos_drm_ippdrv_lock);
 static BLOCKING_NOTIFIER_HEAD(exynos_drm_ippnb_list);
 
+int exynos_platform_device_ipp_register(void)
+{
+        struct platform_device *pdev;
+
+        if (exynos_drm_ipp_pdev)
+                return -EEXIST;
+
+        pdev = platform_device_register_simple("exynos-drm-ipp", -1, NULL, 0);
+        if (IS_ERR(pdev))
+                return PTR_ERR(pdev);
+
+        exynos_drm_ipp_pdev = pdev;
+
+        return 0;
+}
+
+void exynos_platform_device_ipp_unregister(void)
+{
+        if (exynos_drm_ipp_pdev) {
+                platform_device_unregister(exynos_drm_ipp_pdev);
+                exynos_drm_ipp_pdev = NULL;
+        }
+}
+
 int exynos_drm_ippdrv_register(struct exynos_drm_ippdrv *ippdrv)
 {
         DRM_DEBUG_KMS("%s\n", __func__);