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

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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>
This commit is contained in:
Cliff Cai 2010-03-12 10:29:10 +02:00 committed by Greg Kroah-Hartman
parent fb9c58edf1
commit 6ddc6dae4a
2 changed files with 5 additions and 4 deletions
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8
drivers/usb/musb/blackfin.c
View File

@ -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",

1
include/linux/usb/musb.h
View File

@ -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
};