diff options
Diffstat (limited to 'arch/arm/plat-pxa/mfp.c')
| -rw-r--r-- | arch/arm/plat-pxa/mfp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/plat-pxa/mfp.c b/arch/arm/plat-pxa/mfp.c index e716c62..be58f9f 100644 --- a/arch/arm/plat-pxa/mfp.c +++ b/arch/arm/plat-pxa/mfp.c @@ -77,11 +77,13 @@ * MFPR_PULL_LOW 1 0 1 * MFPR_PULL_HIGH 1 1 0 * MFPR_PULL_BOTH 1 1 1 + * MFPR_PULL_FLOAT 1 0 0 */ #define MFPR_PULL_NONE (0) #define MFPR_PULL_LOW (MFPR_PULL_SEL | MFPR_PULLDOWN_EN) #define MFPR_PULL_BOTH (MFPR_PULL_LOW | MFPR_PULLUP_EN) #define MFPR_PULL_HIGH (MFPR_PULL_SEL | MFPR_PULLUP_EN) +#define MFPR_PULL_FLOAT (MFPR_PULL_SEL) /* mfp_spin_lock is used to ensure that MFP register configuration * (most likely a read-modify-write operation) is atomic, and that @@ -116,6 +118,7 @@ static const unsigned long mfpr_pull[] = { MFPR_PULL_LOW, MFPR_PULL_HIGH, MFPR_PULL_BOTH, + MFPR_PULL_FLOAT, }; /* mapping of MFP_LPM_EDGE_* definitions to MFPR_EDGE_* register bits */ @@ -204,7 +207,7 @@ unsigned long mfp_read(int mfp) { unsigned long val, flags; - BUG_ON(mfp >= MFP_PIN_MAX); + BUG_ON(mfp < 0 || mfp >= MFP_PIN_MAX); spin_lock_irqsave(&mfp_spin_lock, flags); val = mfpr_readl(mfp_table[mfp].mfpr_off); @@ -217,7 +220,7 @@ void mfp_write(int mfp, unsigned long val) { unsigned long flags; - BUG_ON(mfp >= MFP_PIN_MAX); + BUG_ON(mfp < 0 || mfp >= MFP_PIN_MAX); spin_lock_irqsave(&mfp_spin_lock, flags); mfpr_writel(mfp_table[mfp].mfpr_off, val); |