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yaml
---
r: 30777
b: refs/heads/master
c: c3dc807
h: refs/heads/master
i:
  30775: f2f08bf
v: v3
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Jim Cromie authored and Linus Torvalds committed Jun 28, 2006
1 parent 2e83e08 commit d4e0ea8
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Showing 2 changed files with 15 additions and 11 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: fe3a168a2ce1c93837cdf8fe27a3e67795155f90
refs/heads/master: c3dc8071eedaac8c8a05c30fe20b78452a818dd9
24 changes: 14 additions & 10 deletions trunk/drivers/char/scx200_gpio.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;

Expand All @@ -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 */
Expand All @@ -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;

Expand All @@ -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);
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