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usb: twl6030: Add dt support for twl6030 usb 

Add device tree support for twl6030 usb driver.
Update the Documentation with device tree binding information.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Kishon Vijay Abraham I 2012-09-06 20:27:08 +05:30 committed by Felipe Balbi
parent 0e98de67ba
commit ff0a1f3940
2 changed files with 47 additions and 13 deletions
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21
Documentation/devicetree/bindings/usb/twlxxxx-usb.txt Normal file
View File

@ -0,0 +1,21 @@
USB COMPARATOR OF TWL CHIPS
TWL6030 USB COMPARATOR
- compatible : Should be "ti,twl6030-usb"
- interrupts : Two interrupt numbers to the cpu should be specified. First
interrupt number is the otg interrupt number that raises ID interrupts when
the controller has to act as host and the second interrupt number is the
usb interrupt number that raises VBUS interrupts when the controller has to
act as device
- usb-supply : phandle to the regulator device tree node. It should be vusb
if it is twl6030 or ldousb if it is twl6025 subclass.
twl6030-usb {
compatible = "ti,twl6030-usb";
interrupts = < 4 10 >;
};
Board specific device node entry
&twl6030-usb {
usb-supply = <&vusb>;
};

39
drivers/usb/otg/twl6030-usb.c
View File

@ -105,7 +105,7 @@ struct twl6030_usb {
u8 asleep;
bool irq_enabled;
bool vbus_enable;
unsigned long features;
const char *regulator;
};
#define comparator_to_twl(x) container_of((x), struct twl6030_usb, comparator)
@ -153,13 +153,6 @@ static int twl6030_start_srp(struct phy_companion *comparator)
static int twl6030_usb_ldo_init(struct twl6030_usb *twl)
{
char *regulator_name;
if (twl->features & TWL6025_SUBCLASS)
regulator_name = "ldousb";
else
regulator_name = "vusb";
/* Set to OTG_REV 1.3 and turn on the ID_WAKEUP_COMP */
twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_BACKUP_REG);
@ -169,7 +162,7 @@ static int twl6030_usb_ldo_init(struct twl6030_usb *twl)
/* Program MISC2 register and set bit VUSB_IN_VBAT */
twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x10, TWL6030_MISC2);
twl->usb3v3 = regulator_get(twl->dev, regulator_name);
twl->usb3v3 = regulator_get(twl->dev, twl->regulator);
if (IS_ERR(twl->usb3v3))
return -ENODEV;
@ -322,9 +315,9 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev)
u32 ret;
struct twl6030_usb *twl;
int status, err;
struct twl4030_usb_data *pdata;
struct device *dev = &pdev->dev;
pdata = dev->platform_data;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct twl4030_usb_data *pdata = dev->platform_data;
twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL);
if (!twl)
@ -333,7 +326,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev)
twl->dev = &pdev->dev;
twl->irq1 = platform_get_irq(pdev, 0);
twl->irq2 = platform_get_irq(pdev, 1);
twl->features = pdata->features;
twl->linkstat = OMAP_MUSB_UNKNOWN;
twl->comparator.set_vbus = twl6030_set_vbus;
@ -345,6 +337,18 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}
if (np) {
twl->regulator = "usb";
} else if (pdata) {
if (pdata->features & TWL6025_SUBCLASS)
twl->regulator = "ldousb";
else
twl->regulator = "vusb";
} else {
dev_err(&pdev->dev, "twl6030 initialized without pdata\n");
return -EINVAL;
}
/* init spinlock for workqueue */
spin_lock_init(&twl->lock);
@ -406,12 +410,21 @@ static int __exit twl6030_usb_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id twl6030_usb_id_table[] = {
{ .compatible = "ti,twl6030-usb" },
{}
};
MODULE_DEVICE_TABLE(of, twl6030_usb_id_table);
#endif
static struct platform_driver twl6030_usb_driver = {
.probe = twl6030_usb_probe,
.remove = __exit_p(twl6030_usb_remove),
.driver = {
.name = "twl6030_usb",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(twl6030_usb_id_table),
},
};