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Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
-rw-r--r--arch/arm/mach-pxa/mfp-pxa2xx.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c
index 1f229875907..33626de8cbf 100644
--- a/arch/arm/mach-pxa/mfp-pxa2xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa2xx.c
@@ -38,6 +38,7 @@ struct gpio_desc {
unsigned valid : 1;
unsigned can_wakeup : 1;
unsigned keypad_gpio : 1;
+ unsigned dir_inverted : 1;
unsigned int mask; /* bit mask in PWER or PKWR */
unsigned int mux_mask; /* bit mask of muxed gpio bits, 0 if no mux */
unsigned long config;
@@ -54,7 +55,7 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
int uorl = !!(gpio & 0x10); /* GAFRx_U or GAFRx_L ? */
int shft = (gpio & 0xf) << 1;
int fn = MFP_AF(c);
- int dir = c & MFP_DIR_OUT;
+ int is_out = (c & MFP_DIR_OUT) ? 1 : 0;
if (fn > 3)
return -EINVAL;
@@ -68,7 +69,7 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
else
GAFR_U(bank) = gafr;
- if (dir == MFP_DIR_OUT)
+ if (is_out ^ gpio_desc[gpio].dir_inverted)
GPDR(gpio) |= mask;
else
GPDR(gpio) &= ~mask;
@@ -77,11 +78,11 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
switch (c & MFP_LPM_STATE_MASK) {
case MFP_LPM_DRIVE_HIGH:
PGSR(bank) |= mask;
- dir = MFP_DIR_OUT;
+ is_out = 1;
break;
case MFP_LPM_DRIVE_LOW:
PGSR(bank) &= ~mask;
- dir = MFP_DIR_OUT;
+ is_out = 1;
break;
case MFP_LPM_DEFAULT:
break;
@@ -92,7 +93,7 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
break;
}
- if (dir == MFP_DIR_OUT)
+ if (is_out ^ gpio_desc[gpio].dir_inverted)
gpdr_lpm[bank] |= mask;
else
gpdr_lpm[bank] &= ~mask;
@@ -106,7 +107,7 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c)
return -EINVAL;
}
- if ((c & MFP_LPM_CAN_WAKEUP) && (dir == MFP_DIR_OUT)) {
+ if ((c & MFP_LPM_CAN_WAKEUP) && is_out) {
pr_warning("%s: output GPIO%d unable to wakeup\n",
__func__, gpio);
return -EINVAL;
@@ -221,6 +222,12 @@ static void __init pxa25x_mfp_init(void)
gpio_desc[i].can_wakeup = 1;
gpio_desc[i].mask = GPIO_bit(i);
}
+
+ /* PXA26x has additional 4 GPIOs (86/87/88/89) which has the
+ * direction bit inverted in GPDR2. See PXA26x DM 4.1.1.
+ */
+ for (i = 86; i <= pxa_last_gpio; i++)
+ gpio_desc[i].dir_inverted = 1;
}
#else
static inline void pxa25x_mfp_init(void) {}