Messages in this thread Patch in this message | | | From | Michal Simek <> | Subject | [PATCH v3] uio/pdrv_genirq: Add OF support | Date | Mon, 18 Apr 2011 10:50:54 +0200 |
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Adding OF binding to genirq. Version string is setup to the "devicetree".
Compatible string is not setup for now but you can add your custom compatible string to uio_of_genirq_match structure.
For example with "uio" compatible string: static const struct of_device_id __devinitconst uio_of_genirq_match[] = { { .compatible = "uio", }, { /* empty for now */ }, };
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
v3: Fix irq binding Use "devicetree" as version string
v2: Remove additional resource binding Setup correct version string Clear compatible string --- drivers/uio/uio_pdrv_genirq.c | 42 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c index 7174d51..c8d565a 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 +101,30 @@ 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 < 0) { + uioinfo->irq = UIO_IRQ_NONE; + dev_info(&pdev->dev, "no IRQ found\n"); + } else { + uioinfo->irq = irq; + dev_info(&pdev->dev, "irq %d\n", (u32)uioinfo->irq); + } + } + if (!uioinfo || !uioinfo->name || !uioinfo->version) { dev_err(&pdev->dev, "missing platform_data\n"); goto bad0; @@ -180,6 +208,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) kfree(priv); pm_runtime_disable(&pdev->dev); bad0: + /* kfree uioinfo for CONFIG_OF */ + if (!pdev->dev.platform_data) + kfree(uioinfo); + bad2: return ret; } @@ -215,6 +247,15 @@ 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, @@ -222,6 +263,7 @@ 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, }, }; -- 1.5.5.6
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