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path: root/drivers/video/bfin_adv7393fb.c
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Diffstat (limited to 'drivers/video/bfin_adv7393fb.c')
-rw-r--r--drivers/video/bfin_adv7393fb.c43
1 files changed, 19 insertions, 24 deletions
diff --git a/drivers/video/bfin_adv7393fb.c b/drivers/video/bfin_adv7393fb.c
index 8d411a3c9966..a54f7f7d763b 100644
--- a/drivers/video/bfin_adv7393fb.c
+++ b/drivers/video/bfin_adv7393fb.c
@@ -333,29 +333,23 @@ static int proc_output(char *buf)
return p - buf;
}
-static int
-adv7393_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static ssize_t
+adv7393_read_proc(struct file *file, char __user *buf,
+ size_t size, loff_t *ppos)
{
- int len;
-
- len = proc_output(page);
- if (len <= off + count)
- *eof = 1;
- *start = page + off;
- len -= off;
- if (len > count)
- len = count;
- if (len < 0)
- len = 0;
- return len;
+ static const char message[] = "Usage:\n"
+ "echo 0x[REG][Value] > adv7393\n"
+ "example: echo 0x1234 >adv7393\n"
+ "writes 0x34 into Register 0x12\n";
+ return simple_read_from_buffer(buf, size, ppos, message,
+ sizeof(message));
}
-static int
+static ssize_t
adv7393_write_proc(struct file *file, const char __user * buffer,
- size_t count, void *data)
+ size_t count, loff_t *ppos)
{
- struct adv7393fb_device *fbdev = data;
+ struct adv7393fb_device *fbdev = PDE_DATA(file_inode(file));
unsigned int val;
int ret;
@@ -368,6 +362,12 @@ adv7393_write_proc(struct file *file, const char __user * buffer,
return count;
}
+static const struct file_operations fops = {
+ .read = adv7393_read_proc,
+ .write = adv7393_write_proc,
+ .llseek = default_llseek,
+};
+
static int bfin_adv7393_fb_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -506,17 +506,12 @@ static int bfin_adv7393_fb_probe(struct i2c_client *client,
fbdev->info.node, fbdev->info.fix.id);
dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
- entry = create_proc_entry("driver/adv7393", 0, NULL);
+ entry = proc_create_data("driver/adv7393", 0, NULL, &fops, fbdev);
if (!entry) {
dev_err(&client->dev, "unable to create /proc entry\n");
ret = -EFAULT;
goto free_fb;
}
-
- entry->read_proc = adv7393_read_proc;
- entry->write_proc = adv7393_write_proc;
- entry->data = fbdev;
-
return 0;
free_fb: