diff options
Diffstat (limited to 'drivers/usb/misc/usb3503.c')
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index f43c61989ce..47cb143716a 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -149,8 +149,6 @@ static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode) case USB3503_MODE_STANDBY: usb3503_reset(hub, 0); - - hub->mode = mode; dev_info(dev, "switched to STANDBY mode\n"); break; @@ -192,7 +190,8 @@ static int usb3503_probe(struct usb3503 *hub) clk = devm_clk_get(dev, "refclk"); if (IS_ERR(clk) && PTR_ERR(clk) != -ENOENT) { - dev_err(dev, "unable to request refclk (%d)\n", err); + dev_err(dev, "unable to request refclk (%ld)\n", + PTR_ERR(clk)); return PTR_ERR(clk); } @@ -346,6 +345,37 @@ static int usb3503_platform_probe(struct platform_device *pdev) return usb3503_probe(hub); } +#ifdef CONFIG_PM_SLEEP +static int usb3503_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb3503 *hub = i2c_get_clientdata(client); + + usb3503_switch_mode(hub, USB3503_MODE_STANDBY); + + if (hub->clk) + clk_disable_unprepare(hub->clk); + + return 0; +} + +static int usb3503_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb3503 *hub = i2c_get_clientdata(client); + + if (hub->clk) + clk_prepare_enable(hub->clk); + + usb3503_switch_mode(hub, hub->mode); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(usb3503_i2c_pm_ops, usb3503_i2c_suspend, + usb3503_i2c_resume); + static const struct i2c_device_id usb3503_id[] = { { USB3503_I2C_NAME, 0 }, { } @@ -364,6 +394,7 @@ MODULE_DEVICE_TABLE(of, usb3503_of_match); static struct i2c_driver usb3503_i2c_driver = { .driver = { .name = USB3503_I2C_NAME, + .pm = &usb3503_i2c_pm_ops, .of_match_table = of_match_ptr(usb3503_of_match), }, .probe = usb3503_i2c_probe, |