diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2019-01-21 15:33:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-25 10:02:50 +0100 |
| commit | f84f9ae32fbf026ecc6d7a5e546cac0963ae994e (patch) | |
| tree | c2b32f57315720f259af685581fa8a4366bb1c4b /drivers/usb/misc | |
| parent | 2c904963b1dd2acd4bc785b6c72e10a6283c2081 (diff) | |
usb: misc: usb3503: Add system sleep support in non-I2C mode
USB3503 chip can be used without any I2C connection, what is handled by
a simple platform device driver. Add support for resetting the chip (via
GPIO lines) during system suspend/resume cycle by adding calls to existing
suspend/resume functions used for E2C device.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index f723f7b8c9ac..d5141aa79dd4 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -355,11 +355,8 @@ static int usb3503_platform_remove(struct platform_device *pdev) } #ifdef CONFIG_PM_SLEEP -static int usb3503_i2c_suspend(struct device *dev) +static int usb3503_suspend(struct usb3503 *hub) { - 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) @@ -368,11 +365,8 @@ static int usb3503_i2c_suspend(struct device *dev) return 0; } -static int usb3503_i2c_resume(struct device *dev) +static int usb3503_resume(struct usb3503 *hub) { - struct i2c_client *client = to_i2c_client(dev); - struct usb3503 *hub = i2c_get_clientdata(client); - if (hub->clk) clk_prepare_enable(hub->clk); @@ -380,11 +374,38 @@ static int usb3503_i2c_resume(struct device *dev) return 0; } + +static int usb3503_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + return usb3503_suspend(i2c_get_clientdata(client)); +} + +static int usb3503_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + return usb3503_resume(i2c_get_clientdata(client)); +} + +static int usb3503_platform_suspend(struct device *dev) +{ + return usb3503_suspend(dev_get_drvdata(dev)); +} + +static int usb3503_platform_resume(struct device *dev) +{ + return usb3503_resume(dev_get_drvdata(dev)); +} #endif static SIMPLE_DEV_PM_OPS(usb3503_i2c_pm_ops, usb3503_i2c_suspend, usb3503_i2c_resume); +static SIMPLE_DEV_PM_OPS(usb3503_platform_pm_ops, usb3503_platform_suspend, + usb3503_platform_resume); + static const struct i2c_device_id usb3503_id[] = { { USB3503_I2C_NAME, 0 }, { } @@ -415,6 +436,7 @@ static struct platform_driver usb3503_platform_driver = { .driver = { .name = USB3503_I2C_NAME, .of_match_table = of_match_ptr(usb3503_of_match), + .pm = &usb3503_platform_pm_ops, }, .probe = usb3503_platform_probe, .remove = usb3503_platform_remove, |