diff options
| author | Eirik Aanonsen <EAA@wprmedical.com> | 2010-02-05 09:49:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:54:57 -0800 |
| commit | 640e95abdfae9fef5949084c92e80c8f2f8b5ec5 (patch) | |
| tree | f8cb60315b5b362b53777c0e11650e681c9c3b65 | |
| parent | 90f7976880bbbf9968629500972f8e2f80401217 (diff) | |
| download | kernel_samsung_aries-640e95abdfae9fef5949084c92e80c8f2f8b5ec5.zip kernel_samsung_aries-640e95abdfae9fef5949084c92e80c8f2f8b5ec5.tar.gz kernel_samsung_aries-640e95abdfae9fef5949084c92e80c8f2f8b5ec5.tar.bz2 | |
USB: atmel uaba: Adding invert vbus_pin
Adding vbus_pin_inverted so that the usb detect pin can be active high
or low depending on HW implementation also replaced the
gpio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc); This
allows the driver to be loaded and save about 0,15W on the consumption.
Signed-off-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/avr32/mach-at32ap/at32ap700x.c | 7 | ||||
| -rw-r--r-- | drivers/usb/gadget/atmel_usba_udc.c | 5 | ||||
| -rw-r--r-- | drivers/usb/gadget/atmel_usba_udc.h | 1 | ||||
| -rw-r--r-- | include/linux/usb/atmel_usba_udc.h | 1 |
4 files changed, 10 insertions, 4 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index b13d187..3a4bc1a 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1770,10 +1770,13 @@ at32_add_device_usba(unsigned int id, struct usba_platform_data *data) ARRAY_SIZE(usba0_resource))) goto out_free_pdev; - if (data) + if (data) { usba_data.pdata.vbus_pin = data->vbus_pin; - else + usba_data.pdata.vbus_pin_inverted = data->vbus_pin_inverted; + } else { usba_data.pdata.vbus_pin = -EINVAL; + usba_data.pdata.vbus_pin_inverted = -EINVAL; + } data = &usba_data.pdata; data->num_ep = ARRAY_SIZE(at32_usba_ep); diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 976822f..f79bdfe 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -320,7 +320,7 @@ static inline void usba_cleanup_debugfs(struct usba_udc *udc) static int vbus_is_present(struct usba_udc *udc) { if (gpio_is_valid(udc->vbus_pin)) - return gpio_get_value(udc->vbus_pin); + return gpio_get_value(udc->vbus_pin) ^ udc->vbus_pin_inverted; /* No Vbus detection: Assume always present */ return 1; @@ -1763,7 +1763,7 @@ static irqreturn_t usba_vbus_irq(int irq, void *devid) if (!udc->driver) goto out; - vbus = gpio_get_value(udc->vbus_pin); + vbus = vbus_is_present(udc); if (vbus != udc->vbus_prev) { if (vbus) { toggle_bias(1); @@ -2000,6 +2000,7 @@ static int __init usba_udc_probe(struct platform_device *pdev) if (gpio_is_valid(pdata->vbus_pin)) { if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) { udc->vbus_pin = pdata->vbus_pin; + udc->vbus_pin_inverted = pdata->vbus_pin_inverted; ret = request_irq(gpio_to_irq(udc->vbus_pin), usba_vbus_irq, 0, diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h index f7baea3..88a2e07 100644 --- a/drivers/usb/gadget/atmel_usba_udc.h +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -323,6 +323,7 @@ struct usba_udc { struct platform_device *pdev; int irq; int vbus_pin; + int vbus_pin_inverted; struct clk *pclk; struct clk *hclk; diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h index 6311fa2..baf41c8 100644 --- a/include/linux/usb/atmel_usba_udc.h +++ b/include/linux/usb/atmel_usba_udc.h @@ -15,6 +15,7 @@ struct usba_ep_data { struct usba_platform_data { int vbus_pin; + int vbus_pin_inverted; int num_ep; struct usba_ep_data ep[0]; }; |