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[PATCH] chardev: GPIO for SCx200 & PC-8736x: dispatch via vtable

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Now actually call the gpio operations thru the vtable.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jim Cromie 2006-06-27 02:54:18 -07:00 committed by Linus Torvalds
parent fe3a168a2c
commit c3dc8071ee
1 changed files with 14 additions and 10 deletions
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24
drivers/char/scx200_gpio.c
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@ -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);