Commit c3dc8071 authored by Jim Cromie's avatar Jim Cromie Committed by Linus Torvalds
Browse files

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



Now actually call the gpio operations thru the vtable.

Signed-off-by: default avatarJim Cromie <jim.cromie@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent fe3a168a

drivers/char/scx200_gpio.c

+14 −10
Original line number Diff line number Diff line
@@ -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);