From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Jarzmik Subject: [PATCH 2/2] media: soc_camera: pxa_camera device-tree support Date: Sun, 15 Jun 2014 22:17:16 +0200 Message-ID: <1402863436-30311-2-git-send-email-robert.jarzmik@free.fr> References: <1402863436-30311-1-git-send-email-robert.jarzmik@free.fr> Return-path: In-Reply-To: <1402863436-30311-1-git-send-email-robert.jarzmik@free.fr> Sender: linux-media-owner@vger.kernel.org To: g.liakhovetski@gmx.de, devicetree@vger.kernel.org Cc: linux-media@vger.kernel.org, Robert Jarzmik List-Id: devicetree@vger.kernel.org Add device-tree support to pxa_camera host driver. Signed-off-by: Robert Jarzmik --- 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 #include #include +#include #include @@ -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