Support OF support. "generic-uio" compatible property is used.
Signed-off-by: Michal Simek <[email protected]>
---
v2: Remove additional resource binding
Setup correct version string
Clear compatible string
---
drivers/uio/uio_pdrv_genirq.c | 45 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index 7174d51..fd84a93 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 +101,28 @@ static int uio_pdrv_genirq_probe(struct platform_device
*pdev)
int ret = -EINVAL;
int i;
+ if (!uioinfo) {
+ /* 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 = "dt";
+
+ /* Multiple IRQs are not supported */
+ if (pdev->num_resources > 1) {
+ struct resource *r = &pdev->resource[1];
+ uioinfo->irq = r->start;
+ dev_info(&pdev->dev, "irq %d\n", (u32)uioinfo->irq);
+ } else {
+ uioinfo->irq = UIO_IRQ_NONE;
+ dev_info(&pdev->dev, "no IRQ found\n");
+ }
+ }
+
if (!uioinfo || !uioinfo->name || !uioinfo->version) {
dev_err(&pdev->dev, "missing platform_data\n");
goto bad0;
@@ -180,6 +206,10 @@ 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 +245,20 @@ static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops
= {
.runtime_resume = uio_pdrv_genirq_runtime_nop,
};
+#ifdef CONFIG_OF
+/*
+ * Empty match table for of_platform binding
+ * Select your custom compatible string in format
+ * { .compatible = "<compatible string>", },
+ */
+static const struct of_device_id __devinitconst uio_of_genirq_match[] = {
+ { /* end of list */ },
+};
+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 +266,7 @@ 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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