Release 4.7 drivers/macintosh/ans-lcd.c
/*
* /dev/lcd driver for Apple Network Servers.
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/fcntl.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
#include <asm/sections.h>
#include <asm/prom.h>
#include <asm/io.h>
#include "ans-lcd.h"
#define ANSLCD_ADDR 0xf301c000
#define ANSLCD_CTRL_IX 0x00
#define ANSLCD_DATA_IX 0x10
static unsigned long anslcd_short_delay = 80;
static unsigned long anslcd_long_delay = 3280;
static volatile unsigned char __iomem *anslcd_ptr;
static DEFINE_MUTEX(anslcd_mutex);
#undef DEBUG
static void
anslcd_write_byte_ctrl ( unsigned char c )
{
#ifdef DEBUG
printk(KERN_DEBUG "LCD: CTRL byte: %02x\n",c);
#endif
out_8(anslcd_ptr + ANSLCD_CTRL_IX, c);
switch(c) {
case 1:
case 2:
case 3:
udelay(anslcd_long_delay); break;
default: udelay(anslcd_short_delay);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 59 | 100.00% | 1 | 100.00% |
| Total | 59 | 100.00% | 1 | 100.00% |
static void
anslcd_write_byte_data ( unsigned char c )
{
out_8(anslcd_ptr + ANSLCD_DATA_IX, c);
udelay(anslcd_short_delay);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
static ssize_t
anslcd_write( struct file * file, const char __user * buf,
size_t count, loff_t *ppos )
{
const char __user *p = buf;
int i;
#ifdef DEBUG
printk(KERN_DEBUG "LCD: write\n");
#endif
if (!access_ok(VERIFY_READ, buf, count))
return -EFAULT;
mutex_lock(&anslcd_mutex);
for ( i = *ppos; count > 0; ++i, ++p, --count )
{
char c;
__get_user(c, p);
anslcd_write_byte_data( c );
}
mutex_unlock(&anslcd_mutex);
*ppos = i;
return p - buf;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 105 | 86.78% | 1 | 25.00% |
| thomas gleixner | thomas gleixner | 12 | 9.92% | 1 | 25.00% |
| al viro | al viro | 2 | 1.65% | 1 | 25.00% |
| jesper juhl | jesper juhl | 2 | 1.65% | 1 | 25.00% |
| Total | 121 | 100.00% | 4 | 100.00% |
static long
anslcd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
char ch, __user *temp;
long ret = 0;
#ifdef DEBUG
printk(KERN_DEBUG "LCD: ioctl(%d,%d)\n",cmd,arg);
#endif
mutex_lock(&anslcd_mutex);
switch ( cmd )
{
case ANSLCD_CLEAR:
anslcd_write_byte_ctrl ( 0x38 );
anslcd_write_byte_ctrl ( 0x0f );
anslcd_write_byte_ctrl ( 0x06 );
anslcd_write_byte_ctrl ( 0x01 );
anslcd_write_byte_ctrl ( 0x02 );
break;
case ANSLCD_SENDCTRL:
temp = (char __user *) arg;
__get_user(ch, temp);
for (; ch; temp++) { /* FIXME: This is ugly, but should work, as a \0 byte is not a valid command code */
anslcd_write_byte_ctrl ( ch );
__get_user(ch, temp);
}
break;
case ANSLCD_SETSHORTDELAY:
if (!capable(CAP_SYS_ADMIN))
ret =-EACCES;
else
anslcd_short_delay=arg;
break;
case ANSLCD_SETLONGDELAY:
if (!capable(CAP_SYS_ADMIN))
ret = -EACCES;
else
anslcd_long_delay=arg;
break;
default:
ret = -EINVAL;
}
mutex_unlock(&anslcd_mutex);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 151 | 79.89% | 1 | 33.33% |
| thomas gleixner | thomas gleixner | 36 | 19.05% | 1 | 33.33% |
| al viro | al viro | 2 | 1.06% | 1 | 33.33% |
| Total | 189 | 100.00% | 3 | 100.00% |
static int
anslcd_open( struct inode * inode, struct file * file )
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
const struct file_operations anslcd_fops = {
.write = anslcd_write,
.unlocked_ioctl = anslcd_ioctl,
.open = anslcd_open,
.llseek = default_llseek,
};
static struct miscdevice anslcd_dev = {
ANSLCD_MINOR,
"anslcd",
&anslcd_fops
};
const char anslcd_logo[] = "********************" /* Line #1 */
"* LINUX! *" /* Line #3 */
"* Welcome to *" /* Line #2 */
"********************"; /* Line #4 */
static int __init
anslcd_init(void)
{
int a;
int retval;
struct device_node* node;
node = of_find_node_by_name(NULL, "lcd");
if (!node || !node->parent || strcmp(node->parent->name, "gc")) {
of_node_put(node);
return -ENODEV;
}
of_node_put(node);
anslcd_ptr = ioremap(ANSLCD_ADDR, 0x20);
retval = misc_register(&anslcd_dev);
if(retval < 0){
printk(KERN_INFO "LCD: misc_register failed\n");
iounmap(anslcd_ptr);
return retval;
}
#ifdef DEBUG
printk(KERN_DEBUG "LCD: init\n");
#endif
mutex_lock(&anslcd_mutex);
anslcd_write_byte_ctrl ( 0x38 );
anslcd_write_byte_ctrl ( 0x0c );
anslcd_write_byte_ctrl ( 0x06 );
anslcd_write_byte_ctrl ( 0x01 );
anslcd_write_byte_ctrl ( 0x02 );
for(a=0;a<80;a++) {
anslcd_write_byte_data(anslcd_logo[a]);
}
mutex_unlock(&anslcd_mutex);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 123 | 68.72% | 1 | 20.00% |
| chris wilson | chris wilson | 27 | 15.08% | 1 | 20.00% |
| stephen rothwell | stephen rothwell | 16 | 8.94% | 1 | 20.00% |
| thomas gleixner | thomas gleixner | 12 | 6.70% | 1 | 20.00% |
| christoph hellwig | christoph hellwig | 1 | 0.56% | 1 | 20.00% |
| Total | 179 | 100.00% | 5 | 100.00% |
static void __exit
anslcd_exit(void)
{
misc_deregister(&anslcd_dev);
iounmap(anslcd_ptr);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| christoph hellwig | christoph hellwig | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
module_init(anslcd_init);
module_exit(anslcd_exit);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mackerras | paul mackerras | 597 | 78.66% | 1 | 7.14% |
| thomas gleixner | thomas gleixner | 67 | 8.83% | 1 | 7.14% |
| chris wilson | chris wilson | 27 | 3.56% | 1 | 7.14% |
| christoph hellwig | christoph hellwig | 27 | 3.56% | 1 | 7.14% |
| stephen rothwell | stephen rothwell | 16 | 2.11% | 1 | 7.14% |
| art haas | art haas | 6 | 0.79% | 1 | 7.14% |
| arnd bergmann | arnd bergmann | 5 | 0.66% | 1 | 7.14% |
| al viro | al viro | 5 | 0.66% | 2 | 14.29% |
| colin leroy | colin leroy | 3 | 0.40% | 1 | 7.14% |
| jesper juhl | jesper juhl | 2 | 0.26% | 1 | 7.14% |
| kumar gala | kumar gala | 2 | 0.26% | 1 | 7.14% |
| arjan van de ven | arjan van de ven | 1 | 0.13% | 1 | 7.14% |
| luis henriques | luis henriques | 1 | 0.13% | 1 | 7.14% |
| Total | 759 | 100.00% | 14 | 100.00% |
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