diff options
| -rw-r--r-- | drivers/char/scx200_gpio.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c index f9994ed0181..15dfb95ebc7 100644 --- a/drivers/char/scx200_gpio.c +++ b/drivers/char/scx200_gpio.c @@ -53,6 +53,7 @@ static ssize_t scx200_gpio_write(struct file *file, const char __user *data, size_t len, loff_t *ppos) { unsigned m = iminor(file->f_dentry->d_inode); + struct nsc_gpio_ops *amp = file->private_data; size_t i; int err = 0; @@ -62,39 +63,39 @@ static ssize_t scx200_gpio_write(struct file *file, const char __user *data, return -EFAULT; switch (c) { case '0': - scx200_gpio_set(m, 0); + amp->gpio_set(m, 0); break; case '1': - scx200_gpio_set(m, 1); + amp->gpio_set(m, 1); break; case 'O': printk(KERN_INFO NAME ": GPIO%d output enabled\n", m); - scx200_gpio_configure(m, ~1, 1); + amp->gpio_config(m, ~1, 1); break; case 'o': printk(KERN_INFO NAME ": GPIO%d output disabled\n", m); - scx200_gpio_configure(m, ~1, 0); + amp->gpio_config(m, ~1, 0); break; case 'T': printk(KERN_INFO NAME ": GPIO%d output is push pull\n", m); - scx200_gpio_configure(m, ~2, 2); + amp->gpio_config(m, ~2, 2); break; case 't': printk(KERN_INFO NAME ": GPIO%d output is open drain\n", m); - scx200_gpio_configure(m, ~2, 0); + amp->gpio_config(m, ~2, 0); break; case 'P': printk(KERN_INFO NAME ": GPIO%d pull up enabled\n", m); - scx200_gpio_configure(m, ~4, 4); + amp->gpio_config(m, ~4, 4); break; case 'p': printk(KERN_INFO NAME ": GPIO%d pull up disabled\n", m); - scx200_gpio_configure(m, ~4, 0); + amp->gpio_config(m, ~4, 0); break; case 'v': /* View Current pin settings */ - scx200_gpio_dump(m); + amp->gpio_dump(m); break; case '\n': /* end of settings string, do nothing */ @@ -117,8 +118,9 @@ static ssize_t scx200_gpio_read(struct file *file, char __user *buf, { unsigned m = iminor(file->f_dentry->d_inode); int value; + struct nsc_gpio_ops *amp = file->private_data; - value = scx200_gpio_get(m); + value = amp->gpio_get(m); if (put_user(value ? '1' : '0', buf)) return -EFAULT; @@ -128,6 +130,8 @@ static ssize_t scx200_gpio_read(struct file *file, char __user *buf, static int scx200_gpio_open(struct inode *inode, struct file *file) { unsigned m = iminor(inode); + file->private_data = &scx200_access; + if (m > 63) return -EINVAL; return nonseekable_open(inode, file); |