diff options
Diffstat (limited to 'drivers/media/platform/soc_camera/pxa_camera.c')
| -rw-r--r-- | drivers/media/platform/soc_camera/pxa_camera.c | 81 |
1 files changed, 79 insertions, 2 deletions
diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c index d4df305fcc1..64dc80ccd6f 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> @@ -1650,6 +1651,68 @@ static struct soc_camera_host_ops pxa_soc_camera_host_ops = { .set_bus_param = pxa_camera_set_bus_param, }; +static int pxa_camera_pdata_from_dt(struct device *dev, + struct pxa_camera_dev *pcdev) +{ + u32 mclk_rate; + struct device_node *np = dev->of_node; + struct v4l2_of_endpoint ep; + int err = of_property_read_u32(np, "clock-frequency", + &mclk_rate); + if (!err) { + pcdev->platform_flags |= PXA_CAMERA_MCLK_EN; + pcdev->mclk = mclk_rate; + } + + 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"); + goto out; + } + + switch (ep.bus.parallel.bus_width) { + case 4: + pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_4; + break; + case 5: + pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_5; + break; + case 8: + pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_8; + break; + case 9: + pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_9; + break; + case 10: + pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10; + break; + default: + break; + }; + + if (ep.bus.parallel.flags & V4L2_MBUS_MASTER) + pcdev->platform_flags |= PXA_CAMERA_MASTER; + if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) + pcdev->platform_flags |= PXA_CAMERA_HSP; + if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) + pcdev->platform_flags |= PXA_CAMERA_VSP; + if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_RISING) + pcdev->platform_flags |= PXA_CAMERA_PCLK_EN | PXA_CAMERA_PCP; + if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) + pcdev->platform_flags |= PXA_CAMERA_PCLK_EN; + +out: + of_node_put(np); + + return err; +} + static int pxa_camera_probe(struct platform_device *pdev) { struct pxa_camera_dev *pcdev; @@ -1676,7 +1739,15 @@ static int pxa_camera_probe(struct platform_device *pdev) pcdev->res = res; pcdev->pdata = pdev->dev.platform_data; - pcdev->platform_flags = pcdev->pdata->flags; + if (&pdev->dev.of_node && !pcdev->pdata) { + err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev); + } else { + pcdev->platform_flags = pcdev->pdata->flags; + pcdev->mclk = pcdev->pdata->mclk_10khz * 10000; + } + if (err < 0) + return err; + if (!(pcdev->platform_flags & (PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_9 | PXA_CAMERA_DATAWIDTH_10))) { /* @@ -1693,7 +1764,6 @@ static int pxa_camera_probe(struct platform_device *pdev) pcdev->width_flags |= 1 << 8; if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10) pcdev->width_flags |= 1 << 9; - pcdev->mclk = pcdev->pdata->mclk_10khz * 10000; if (!pcdev->mclk) { dev_warn(&pdev->dev, "mclk == 0! Please, fix your platform data. " @@ -1799,10 +1869,17 @@ static const struct dev_pm_ops pxa_camera_pm = { .resume = pxa_camera_resume, }; +static const struct of_device_id pxa_camera_of_match[] = { + { .compatible = "marvell,pxa270-qci", }, + {}, +}; +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, |