USB: musb: allow the Blackfin vrsel gpio to be active low

Rather than hardcoding the gpio levels for vrsel, allow the platform
resources to handle this so boards can be active high or low.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 7c71eb422a9c840ed5d46f8ed5c838ae4395cfa8..eb4392f904e48ef01eeb305bd133b5d3fb520287 100644 (file)
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -238,10 +238,10 @@ static void bfin_vbus_power(struct musb *musb, int is_on, int sleeping)
 
 static void bfin_set_vbus(struct musb *musb, int is_on)
 {
-       if (is_on)
-               gpio_set_value(musb->config->gpio_vrsel, 1);
-       else
-               gpio_set_value(musb->config->gpio_vrsel, 0);
+       int value = musb->config->gpio_vrsel_active;
+       if (!is_on)
+               value = !value;
+       gpio_set_value(musb->config->gpio_vrsel, value);
 
        DBG(1, "VBUS %s, devctl %02x "
                /* otg %3x conf %08x prcm %08x */ "\n",

diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index f3d68f62dae89557edbbfac2670f98e154d77973..fbb83fe21851275cc78a7c2d7a76b84643209dc5 100644 (file)
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -88,6 +88,7 @@ struct musb_hdrc_config {
 #ifdef CONFIG_BLACKFIN
         /* A GPIO controlling VRSEL in Blackfin */
         unsigned int    gpio_vrsel;
+       unsigned int    gpio_vrsel_active;
 #endif
 
 };