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[ARM] pxa: introduce dedicated __mfp_validate() to check PXA2xx MFP

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Signed-off-by: Eric Miao <eric.miao@marvell.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Eric Miao 2008-06-16 09:38:27 +08:00 committed by Russell King
parent d4a678080e
commit 0fedb0cad6
1 changed files with 14 additions and 6 deletions
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20
arch/arm/mach-pxa/mfp-pxa2xx.c
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@ -91,6 +91,18 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
return 0;
}
static inline int __mfp_validate(int mfp)
{
int gpio = mfp_to_gpio(mfp);
if ((mfp > MFP_PIN_GPIO127) || !gpio_desc[gpio].valid) {
pr_warning("%s: GPIO%d is invalid pin\n", __func__, gpio);
return -1;
}
return gpio;
}
void pxa2xx_mfp_config(unsigned long *mfp_cfgs, int num)
{
unsigned long flags;
@ -99,13 +111,9 @@ void pxa2xx_mfp_config(unsigned long *mfp_cfgs, int num)
for (i = 0, c = mfp_cfgs; i < num; i++, c++) {
gpio = mfp_to_gpio(MFP_PIN(*c));
if (!gpio_desc[gpio].valid) {
pr_warning("%s: GPIO%d is invalid pin\n",
__func__, gpio);
gpio = __mfp_validate(MFP_PIN(*c));
if (gpio < 0)
continue;
}
local_irq_save(flags);