diff options
| author | Dongjin Kim <tobetter@gmail.com> | 2013-01-24 02:47:10 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-24 13:42:10 -0800 |
| commit | eab8050c0168ab6595e9ac6bc72a14d27390ea7a (patch) | |
| tree | 7c528d0f053cb902d1b05e40448b36b010dd4d51 /drivers/usb/misc | |
| parent | 9bc5d12620cb88aa7df4700980f8106d0e66a9dc (diff) | |
| download | talos-obmc-linux-eab8050c0168ab6595e9ac6bc72a14d27390ea7a.tar.gz talos-obmc-linux-eab8050c0168ab6595e9ac6bc72a14d27390ea7a.zip | |
USB: misc: usb3503: add dt support
Added device tree support for usb3503 driver and add new document with device tree binding information.
Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index dc2c993ea189..471218aea7b3 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -23,6 +23,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/platform_data/usb3503.h> @@ -181,8 +182,10 @@ err_hubmode: static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct usb3503_platform_data *pdata = i2c->dev.platform_data; + struct device_node *np = i2c->dev.of_node; struct usb3503 *hub; int err = -ENOMEM; + u32 mode; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { @@ -193,14 +196,23 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) i2c_set_clientdata(i2c, hub); hub->client = i2c; - if (!pdata) { - dev_dbg(&i2c->dev, "missing platform data\n"); - goto err_out; - } else { + if (pdata) { hub->gpio_intn = pdata->gpio_intn; hub->gpio_connect = pdata->gpio_connect; hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; + } else if (np) { + hub->gpio_intn = of_get_named_gpio(np, "connect-gpios", 0); + if (hub->gpio_intn == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_connect = of_get_named_gpio(np, "intn-gpios", 0); + if (hub->gpio_connect == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); + if (hub->gpio_reset == -EPROBE_DEFER) + return -EPROBE_DEFER; + of_property_read_u32(np, "initial-mode", &mode); + hub->mode = mode; } if (gpio_is_valid(hub->gpio_intn)) { @@ -236,7 +248,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) } } - usb3503_switch_mode(hub, pdata->initial_mode); + usb3503_switch_mode(hub, hub->mode); dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__, (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby"); @@ -277,9 +289,18 @@ static const struct i2c_device_id usb3503_id[] = { }; MODULE_DEVICE_TABLE(i2c, usb3503_id); +#ifdef CONFIG_OF +static const struct of_device_id usb3503_of_match[] = { + { .compatible = "smsc,usb3503", }, + {}, +}; +MODULE_DEVICE_TABLE(of, usb3503_of_match); +#endif + static struct i2c_driver usb3503_driver = { .driver = { .name = USB3503_I2C_NAME, + .of_match_table = of_match_ptr(usb3503_of_match), }, .probe = usb3503_probe, .remove = usb3503_remove, |
