diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2016-02-12 03:49:14 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-06-17 14:11:45 +0300 |
| commit | 94fcdf829793b141dc93e20a2bbd9eeaa44ea25f (patch) | |
| tree | 9c2ef626dc7a1befd422de1340bb61834bd5c556 /drivers/media/platform/vsp1/vsp1_drv.c | |
| parent | c7b12cfddf7b4065a881b5890521a8a1a375924a (diff) | |
| download | linux-94fcdf829793b141dc93e20a2bbd9eeaa44ea25f.tar.xz | |
[media] v4l: vsp1: Add FCP support
On some platforms the VSP performs memory accesses through an FCP. When
that's the case get a reference to the FCP from the VSP DT node and
enable/disable it at runtime as needed.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_drv.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_drv.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 13907d4f08af..e655639af7e2 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -22,6 +22,7 @@ #include <linux/pm_runtime.h> #include <linux/videodev2.h> +#include <media/rcar-fcp.h> #include <media/v4l2-subdev.h> #include "vsp1.h" @@ -514,6 +515,10 @@ static int vsp1_pm_resume(struct device *dev) static int vsp1_pm_runtime_suspend(struct device *dev) { + struct vsp1_device *vsp1 = dev_get_drvdata(dev); + + rcar_fcp_disable(vsp1->fcp); + return 0; } @@ -528,7 +533,7 @@ static int vsp1_pm_runtime_resume(struct device *dev) return ret; } - return 0; + return rcar_fcp_enable(vsp1->fcp); } static const struct dev_pm_ops vsp1_pm_ops = { @@ -614,6 +619,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = { static int vsp1_probe(struct platform_device *pdev) { struct vsp1_device *vsp1; + struct device_node *fcp_node; struct resource *irq; struct resource *io; unsigned int i; @@ -649,6 +655,18 @@ static int vsp1_probe(struct platform_device *pdev) return ret; } + /* FCP (optional) */ + fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0); + if (fcp_node) { + vsp1->fcp = rcar_fcp_get(fcp_node); + of_node_put(fcp_node); + if (IS_ERR(vsp1->fcp)) { + dev_dbg(&pdev->dev, "FCP not found (%ld)\n", + PTR_ERR(vsp1->fcp)); + return PTR_ERR(vsp1->fcp); + } + } + /* Configure device parameters based on the version register. */ pm_runtime_enable(&pdev->dev); @@ -694,6 +712,7 @@ static int vsp1_remove(struct platform_device *pdev) struct vsp1_device *vsp1 = platform_get_drvdata(pdev); vsp1_destroy_entities(vsp1); + rcar_fcp_put(vsp1->fcp); pm_runtime_disable(&pdev->dev); |