diff options
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio_pdrv_genirq.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c index 31e799d9efe..bae96d24676 100644 --- a/drivers/uio/uio_pdrv_genirq.c +++ b/drivers/uio/uio_pdrv_genirq.c @@ -23,6 +23,10 @@ #include <linux/pm_runtime.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> + #define DRIVER_NAME "uio_pdrv_genirq" struct uio_pdrv_genirq_platdata { @@ -97,6 +101,27 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) int ret = -EINVAL; int i; + if (!uioinfo) { + int irq; + + /* alloc uioinfo for one device */ + uioinfo = kzalloc(sizeof(*uioinfo), GFP_KERNEL); + if (!uioinfo) { + ret = -ENOMEM; + dev_err(&pdev->dev, "unable to kmalloc\n"); + goto bad2; + } + uioinfo->name = pdev->dev.of_node->name; + uioinfo->version = "devicetree"; + + /* Multiple IRQs are not supported */ + irq = platform_get_irq(pdev, 0); + if (irq == -ENXIO) + uioinfo->irq = UIO_IRQ_NONE; + else + uioinfo->irq = irq; + } + if (!uioinfo || !uioinfo->name || !uioinfo->version) { dev_err(&pdev->dev, "missing platform_data\n"); goto bad0; @@ -180,6 +205,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) kfree(priv); pm_runtime_disable(&pdev->dev); bad0: + /* kfree uioinfo for OF */ + if (pdev->dev.of_node) + kfree(uioinfo); + bad2: return ret; } @@ -193,6 +222,10 @@ static int uio_pdrv_genirq_remove(struct platform_device *pdev) priv->uioinfo->handler = NULL; priv->uioinfo->irqcontrol = NULL; + /* kfree uioinfo for OF */ + if (pdev->dev.of_node) + kfree(priv->uioinfo); + kfree(priv); return 0; } @@ -219,6 +252,15 @@ static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = { .runtime_resume = uio_pdrv_genirq_runtime_nop, }; +#ifdef CONFIG_OF +static const struct of_device_id __devinitconst uio_of_genirq_match[] = { + { /* empty for now */ }, +}; +MODULE_DEVICE_TABLE(of, uio_of_genirq_match); +#else +# define uio_of_genirq_match NULL +#endif + static struct platform_driver uio_pdrv_genirq = { .probe = uio_pdrv_genirq_probe, .remove = uio_pdrv_genirq_remove, @@ -226,6 +268,7 @@ static struct platform_driver uio_pdrv_genirq = { .name = DRIVER_NAME, .owner = THIS_MODULE, .pm = &uio_pdrv_genirq_dev_pm_ops, + .of_match_table = uio_of_genirq_match, }, }; |