[RFC PATCH 2/3] [media] s5p-jpeg: Add DT support to JPEG driver

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From: George Joseph Palathingal <george.jp@xxxxxxxxxxx>

Adding DT support to the driver. Driver supports Exynos 4210, 4412 and 5250.

Signed-off-by: George Joseph Palathingal <george.jp@xxxxxxxxxxx>
Cc: devicetree-discuss@xxxxxxxxxxxxxxxx
---
 drivers/media/platform/s5p-jpeg/jpeg-core.c |   36 +++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index f964566..b2bf412 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -970,6 +970,8 @@ const struct jpeg_vb2 jpeg_vb2_dma = {
 	.plane_addr	= vb2_dma_contig_plane_dma_addr,
 };
 
+static void *jpeg_get_drv_data(struct platform_device *pdev);
+
 static int jpeg_probe(struct platform_device *pdev)
 {
 	struct jpeg_dev *dev;
@@ -982,8 +984,7 @@ static int jpeg_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	dev->plat_dev = pdev;
-	dev->variant = (struct s5p_jpeg_variant *)
-				platform_get_device_id(pdev)->driver_data;
+	dev->variant = (struct s5p_jpeg_variant *)jpeg_get_drv_data(pdev);
 	spin_lock_init(&dev->slock);
 
 	/* setup jpeg control */
@@ -1232,6 +1233,36 @@ static struct platform_device_id jpeg_driver_ids[] = {
 
 MODULE_DEVICE_TABLE(platform, jpeg_driver_ids);
 
+static const struct of_device_id exynos_jpeg_match[] = {
+	{
+		.compatible = "samsung,s5pv210-jpeg",
+		.data = &jpeg_drvdata_v1,
+	}, {
+		.compatible = "samsung,exynos4212-jpeg",
+		.data = &jpeg_drvdata_v2,
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, exynos_jpeg_match);
+
+static void *jpeg_get_drv_data(struct platform_device *pdev)
+{
+	struct s5p_jpeg_variant *driver_data = NULL;
+
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(of_match_ptr(exynos_jpeg_match),
+					 pdev->dev.of_node);
+		if (match)
+			driver_data = (struct s5p_jpeg_variant *)match->data;
+		} else {
+			driver_data = (struct s5p_jpeg_variant *)
+				platform_get_device_id(pdev)->driver_data;
+		}
+	return driver_data;
+}
+
 static struct platform_driver jpeg_driver = {
 	.probe		= jpeg_probe,
 	.remove		= jpeg_remove,
@@ -1241,6 +1272,7 @@ static struct platform_driver jpeg_driver = {
 	.driver	= {
 		.owner			= THIS_MODULE,
 		.name			= JPEG_NAME,
+		.of_match_table		= exynos_jpeg_match,
 		.pm			= NULL,
 	},
 };
-- 
1.7.9.5

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