Add device-tree support to pxa_camera host driver.
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
drivers/media/platform/soc_camera/pxa_camera.c | 80 ++++++++++++++++++++++++++
1 file changed, 80 insertions(+)
diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index d4df305..e48d821 100644
--- a/drivers/media/platform/soc_camera/pxa_camera.c
+++ b/drivers/media/platform/soc_camera/pxa_camera.c
@@ -34,6 +34,7 @@
#include <media/videobuf-dma-sg.h>
#include <media/soc_camera.h>
#include <media/soc_mediabus.h>
+#include <media/v4l2-of.h>
#include <linux/videodev2.h>
@@ -1650,9 +1651,74 @@ static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
.set_bus_param = pxa_camera_set_bus_param,
};
+static const struct of_device_id pxacamera_dt_ids[] = {
+ { .compatible = "mrvl,pxa_camera", },
+ { }
+};
+
+static int pxa_camera_pdata_from_dt(struct device *dev,
+ struct pxacamera_platform_data *pdata)
+{
+ int err = 0;
+ struct device_node *np = dev->of_node;
+ struct v4l2_of_endpoint ep;
+
+ dev_info(dev, "RJK: %s()\n", __func__);
+ err = of_property_read_u32(np, "mclk_10khz",
+ (u32 *)&pdata->mclk_10khz);
+ if (!err)
+ pdata->flags |= PXA_CAMERA_MCLK_EN;
+
+ np = of_graph_get_next_endpoint(np, NULL);
+ if (!np) {
+ dev_err(dev, "could not find endpoint\n");
+ return -EINVAL;
+ }
+
+ err = v4l2_of_parse_endpoint(np, &ep);
+ if (err) {
+ dev_err(dev, "could not parse endpoint\n");
+ return err;
+ }
+
+ switch (ep.bus.parallel.bus_width) {
+ case 4:
+ pdata->flags |= PXA_CAMERA_DATAWIDTH_4;
+ break;
+ case 5:
+ pdata->flags |= PXA_CAMERA_DATAWIDTH_5;
+ break;
+ case 8:
+ pdata->flags |= PXA_CAMERA_DATAWIDTH_8;
+ break;
+ case 9:
+ pdata->flags |= PXA_CAMERA_DATAWIDTH_9;
+ break;
+ case 10:
+ pdata->flags |= PXA_CAMERA_DATAWIDTH_10;
+ break;
+ default:
+ break;
+ };
+
+ if (ep.bus.parallel.flags & V4L2_MBUS_MASTER)
+ pdata->flags |= PXA_CAMERA_MASTER;
+ if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+ pdata->flags |= PXA_CAMERA_HSP;
+ if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+ pdata->flags |= PXA_CAMERA_VSP;
+ if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ pdata->flags |= PXA_CAMERA_PCLK_EN | PXA_CAMERA_PCP;
+ if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
+ pdata->flags |= PXA_CAMERA_PCLK_EN;
+
+ return 0;
+}
+
static int pxa_camera_probe(struct platform_device *pdev)
{
struct pxa_camera_dev *pcdev;
+ struct pxacamera_platform_data pdata_dt;
struct resource *res;
void __iomem *base;
int irq;
@@ -1676,6 +1742,13 @@ static int pxa_camera_probe(struct platform_device *pdev)
pcdev->res = res;
pcdev->pdata = pdev->dev.platform_data;
+ if (&pdev->dev.of_node && !pcdev->pdata)
+ err = pxa_camera_pdata_from_dt(&pdev->dev, &pdata_dt);
+ if (err < 0)
+ return err;
+ else
+ pcdev->pdata = &pdata_dt;
+
pcdev->platform_flags = pcdev->pdata->flags;
if (!(pcdev->platform_flags & (PXA_CAMERA_DATAWIDTH_8 |
PXA_CAMERA_DATAWIDTH_9 | PXA_CAMERA_DATAWIDTH_10))) {
@@ -1799,10 +1872,17 @@ static const struct dev_pm_ops pxa_camera_pm = {
.resume = pxa_camera_resume,
};
+static const struct of_device_id pxa_camera_of_match[] = {
+ { .compatible = "mrvl,pxa_camera", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pxa_camera_of_match);
+
static struct platform_driver pxa_camera_driver = {
.driver = {
.name = PXA_CAM_DRV_NAME,
.pm = &pxa_camera_pm,
+ .of_match_table = of_match_ptr(pxa_camera_of_match),
},
.probe = pxa_camera_probe,
.remove = pxa_camera_remove,
--
2.0.0.rc2
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
