diff options
Diffstat (limited to 'drivers/char/nsc_gpio.c')
| -rw-r--r-- | drivers/char/nsc_gpio.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c index 3842c272711..72b0a5791ed 100644 --- a/drivers/char/nsc_gpio.c +++ b/drivers/char/nsc_gpio.c @@ -19,6 +19,19 @@ #define NAME "nsc_gpio" +void nsc_gpio_dump(unsigned index, u32 config) +{ + printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n", + index, (unsigned long)config, + (config & 1) ? "OE" : "TS", /* output-enabled/tristate */ + (config & 2) ? "PP" : "OD", /* push pull / open drain */ + (config & 4) ? "PUE" : "PUD", /* pull up enabled/disabled */ + (config & 8) ? "LOCKED" : "", /* locked / unlocked */ + (config & 16) ? "LEVEL" : "EDGE",/* level/edge input */ + (config & 32) ? "HI" : "LO", /* trigger on rise/fall edge */ + (config & 64) ? "DEBOUNCE" : ""); /* debounce */ +} + ssize_t nsc_gpio_write(struct file *file, const char __user *data, size_t len, loff_t *ppos) { @@ -99,9 +112,10 @@ ssize_t nsc_gpio_read(struct file *file, char __user * buf, return 1; } -/* common routines for both scx200_gpio and pc87360_gpio */ +/* common file-ops routines for both scx200_gpio and pc87360_gpio */ EXPORT_SYMBOL(nsc_gpio_write); EXPORT_SYMBOL(nsc_gpio_read); +EXPORT_SYMBOL(nsc_gpio_dump); static int __init nsc_gpio_init(void) { |