Add support for device-tree device discovery. If devicetree is not
provided, fallback to legacy platform data "discovery".
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
Since V1: change OF id mrvl,pxa27x_udc -> marvell,pxa27x-udc
This is a consequence of other DT reviews on the marvell
namings.
Since V2: address Mark's comments:
- wildcard pxa27x becomes pxa270
- pullup gpio is described as standard dt gpio
- bool XXX_probe_dt becomes int XXX_probe_dt
Since v5: split out into 2 patches, this one being the true device-tree port
---
drivers/usb/gadget/udc/pxa27x_udc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index e11f9c5..8961530 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -27,6 +27,8 @@
#include <linux/prefetch.h>
#include <linux/byteorder/generic.h>
#include <linux/platform_data/pxa2xx_udc.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
#include <linux/usb.h>
#include <linux/usb/ch9.h>
@@ -2400,6 +2402,12 @@ static struct pxa_udc memory = {
}
};
+static struct of_device_id udc_pxa_dt_ids[] = {
+ { .compatible = "marvell,pxa270-udc" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, udc_pxa_dt_ids);
+
/**
* pxa_udc_probe - probes the udc device
* @_dev: platform device
@@ -2417,6 +2425,8 @@ static int pxa_udc_probe(struct platform_device *pdev)
if (mach) {
udc->gpiod = gpio_to_desc(mach->gpio_pullup);
udc->udc_command = mach->udc_command;
+ } else {
+ udc->gpiod = devm_gpiod_get(&pdev->dev, NULL);
}
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2608,6 +2618,7 @@ static struct platform_driver udc_driver = {
.driver = {
.name = "pxa27x-udc",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(udc_pxa_dt_ids),
},
.probe = pxa_udc_probe,
.remove = pxa_udc_remove,
--
2.0.0.rc2
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