diff options
Diffstat (limited to 'arch/arm/mach-pxa/mfp-pxa2xx.c')
| -rw-r--r-- | arch/arm/mach-pxa/mfp-pxa2xx.c | 19 |
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) {} |