* This driver was originally based on the INCA-IP driver, but due to
* fundamental conceptual drawbacks there has been changed a lot.
*
- * Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
- * Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
+ * Based on INCA-IP driver Copyright(c) 2003 Gary Jennejohn <gj@denx.de>
+ * Based on the VxWorks drivers Copyright(c) 2002, Infineon Technologies.
*
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ * Copyright(C) 2006 infineon
+ * Copyright(C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/uaccess.h>
+#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/version.h>
+#include <asm/system.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/ifxmips/ifx_ssc_defines.h>
#include <asm/ifxmips/ifx_ssc.h>
/* allow the user to set the major device number */
-static int ifxmips_eeprom_maj = 0;
+static int ifxmips_eeprom_maj;
-extern int ifx_ssc_init (void);
-extern int ifx_ssc_open (struct inode *inode, struct file *filp);
-extern int ifx_ssc_close (struct inode *inode, struct file *filp);
-extern void ifx_ssc_cleanup_module (void);
-extern int ifx_ssc_ioctl (struct inode *inode, struct file *filp,
+extern int ifx_ssc_init(void);
+extern int ifx_ssc_open(struct inode *inode, struct file *filp);
+extern int ifx_ssc_close(struct inode *inode, struct file *filp);
+extern void ifx_ssc_cleanup_module(void);
+extern int ifx_ssc_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long data);
-extern ssize_t ifx_ssc_kwrite (int port, const char *kbuf, size_t len);
-extern ssize_t ifx_ssc_kread (int port, char *kbuf, size_t len);
+extern ssize_t ifx_ssc_kwrite(int port, const char *kbuf, size_t len);
+extern ssize_t ifx_ssc_kread(int port, char *kbuf, size_t len);
-extern int ifx_ssc_cs_low (unsigned int pin);
-extern int ifx_ssc_cs_high (unsigned int pin);
-extern int ifx_ssc_txrx (char *tx_buf, unsigned int tx_len, char *rx_buf, unsigned int rx_len);
-extern int ifx_ssc_tx (char *tx_buf, unsigned int tx_len);
-extern int ifx_ssc_rx (char *rx_buf, unsigned int rx_len);
+extern int ifx_ssc_cs_low(unsigned int pin);
+extern int ifx_ssc_cs_high(unsigned int pin);
+extern int ifx_ssc_txrx(char *tx_buf, unsigned int tx_len, char *rx_buf, unsigned int rx_len);
+extern int ifx_ssc_tx(char *tx_buf, unsigned int tx_len);
+extern int ifx_ssc_rx(char *rx_buf, unsigned int rx_len);
#define EEPROM_CS IFX_SSC_WHBGPOSTAT_OUT0_POS
#define EEPROM_PAGE_SIZE 4
#define EEPROM_SIZE 512
-static int
-eeprom_rdsr (void)
+static int eeprom_rdsr(void)
{
int ret = 0;
unsigned char cmd = EEPROM_RDSR;
return ret;
}
-void
-eeprom_wip_over (void)
+void eeprom_wip_over(void)
{
while (eeprom_rdsr())
- printk("waiting for eeprom\n");
+ printk(KERN_INFO "waiting for eeprom\n");
}
-static int
-eeprom_wren (void)
+static int eeprom_wren(void)
{
unsigned char cmd = EEPROM_WREN;
int ret = 0;
return ret;
}
-static int
-eeprom_wrsr (void)
+static int eeprom_wrsr(void)
{
int ret = 0;
unsigned char cmd[2];
cmd[0] = EEPROM_WRSR;
cmd[1] = 0;
- if ((ret = eeprom_wren()))
- {
- printk ("eeprom_wren fails\n");
+ if ((ret = eeprom_wren())) {
+ printk(KERN_ERR "eeprom_wren fails\n");
goto out1;
}
return ret;
out:
- local_irq_restore (flag);
- eeprom_wip_over ();
+ local_irq_restore(flag);
+ eeprom_wip_over();
out1:
return ret;
}
-static int
-eeprom_read (unsigned int addr, unsigned char *buf, unsigned int len)
+static int eeprom_read(unsigned int addr, unsigned char *buf, unsigned int len)
{
int ret = 0;
unsigned char write_buf[2];
unsigned int eff = 0;
unsigned long flag;
- while (1)
- {
+ while (1) {
eeprom_wip_over();
eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
eff = (eff < len) ? eff : len;
if ((ret = ifx_ssc_cs_low(EEPROM_CS)) < 0)
goto out;
- write_buf[0] = EEPROM_READ | ((unsigned char) ((addr & 0x100) >> 5));
+ write_buf[0] = EEPROM_READ | ((unsigned char)((addr & 0x100) >> 5));
write_buf[1] = (addr & 0xff);
- if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff)
- {
- printk("ssc_txrx fails %d\n", ret);
- ifx_ssc_cs_high (EEPROM_CS);
+ ret = ifx_ssc_txrx(write_buf, 2, buf, eff);
+ if (ret != eff) {
+ printk(KERN_ERR "ssc_txrx fails %d\n", ret);
+ ifx_ssc_cs_high(EEPROM_CS);
goto out;
}
len -= ret;
addr += ret;
- if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
+ ret = ifx_ssc_cs_high(EEPROM_CS);
+ if (ret)
goto out;
local_irq_restore(flag);
}
out:
- local_irq_restore (flag);
+ local_irq_restore(flag);
out2:
return ret;
}
-static int
-eeprom_write (unsigned int addr, unsigned char *buf, unsigned int len)
+static int eeprom_write(unsigned int addr, unsigned char *buf, unsigned int len)
{
int ret = 0;
unsigned int eff = 0;
int i;
unsigned char rx_buf[EEPROM_PAGE_SIZE];
- while (1)
- {
+ while (1) {
eeprom_wip_over();
- if ((ret = eeprom_wren()))
- {
- printk("eeprom_wren fails\n");
+ if ((ret = eeprom_wren())) {
+ printk(KERN_ERR "eeprom_wren fails\n");
goto out;
}
- write_buf[0] = EEPROM_WRITE | ((unsigned char) ((addr & 0x100) >> 5));
+ write_buf[0] = EEPROM_WRITE | ((unsigned char)((addr & 0x100) >> 5));
write_buf[1] = (addr & 0xff);
eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
eff = (eff < len) ? eff : len;
- printk("EEPROM Write:\n");
+ printk(KERN_INFO "EEPROM Write:\n");
for (i = 0; i < eff; i++) {
printk("%2x ", buf[i]);
if ((i % 16) == 15)
if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
goto out;
- if ((ret = ifx_ssc_tx (write_buf, 2)) < 0)
- {
- printk("ssc_tx fails %d\n", ret);
+ if ((ret = ifx_ssc_tx(write_buf, 2)) < 0) {
+ printk(KERN_ERR "ssc_tx fails %d\n", ret);
ifx_ssc_cs_high(EEPROM_CS);
goto out;
}
- if ((ret = ifx_ssc_tx (buf, eff)) != eff)
- {
- printk("ssc_tx fails %d\n", ret);
+ if ((ret = ifx_ssc_tx(buf, eff)) != eff) {
+ printk(KERN_ERR "ssc_tx fails %d\n", ret);
ifx_ssc_cs_high(EEPROM_CS);
goto out;
}
len -= ret;
addr += ret;
- if ((ret = ifx_ssc_cs_high (EEPROM_CS)))
+ if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
goto out;
- printk ("<==");
+ printk(KERN_INFO "<==");
eeprom_read((addr - eff), rx_buf, eff);
for (i = 0; i < eff; i++)
- {
- printk ("[%x]", rx_buf[i]);
- }
- printk ("\n");
+ printk("[%x]", rx_buf[i]);
+ printk("\n");
if (len <= 0)
break;
return ret;
}
-int
-ifxmips_eeprom_open (struct inode *inode, struct file *filp)
+int ifxmips_eeprom_open(struct inode *inode, struct file *filp)
{
filp->f_pos = 0;
return 0;
}
-int
-ifxmips_eeprom_close (struct inode *inode, struct file *filp)
+int ifxmips_eeprom_close(struct inode *inode, struct file *filp)
{
return 0;
}
-int
-ifxmips_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
+int ifxmips_eeprom_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
{
return 0;
}
-ssize_t
-ifxmips_eeprom_read (char *buf, size_t len, unsigned int addr)
+ssize_t ifxmips_eeprom_read(char *buf, size_t len, unsigned int addr)
{
int ret = 0;
unsigned int data;
- printk("addr:=%d\n", addr);
- printk("len:=%d\n", len);
+ printk(KERN_INFO "addr:=%d\n", addr);
+ printk(KERN_INFO "len:=%d\n", len);
- if ((addr + len) > EEPROM_SIZE)
- {
- printk("invalid len\n");
+ if ((addr + len) > EEPROM_SIZE) {
+ printk(KERN_ERR "invalid len\n");
addr = 0;
len = EEPROM_SIZE / 2;
}
- if ((ret = ifx_ssc_open((struct inode *) 0, NULL)))
- {
- printk("ifxmips_eeprom_open fails\n");
+ if ((ret = ifx_ssc_open((struct inode *)0, NULL))) {
+ printk(KERN_ERR "ifxmips_ssc_open fails\n");
goto out;
}
data = (unsigned int)IFX_SSC_MODE_RXTX;
- if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
- {
- printk("set RXTX mode fails\n");
+ if ((ret = ifx_ssc_ioctl((struct inode *)0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data))) {
+ printk(KERN_ERR "set RXTX mode fails\n");
goto out;
}
- if ((ret = eeprom_wrsr()))
- {
- printk("EEPROM reset fails\n");
+ if ((ret = eeprom_wrsr())) {
+ printk(KERN_ERR "EEPROM reset fails\n");
goto out;
}
- if ((ret = eeprom_read(addr, buf, len)))
- {
- printk("eeprom read fails\n");
+ if ((ret = eeprom_read(addr, buf, len))) {
+ printk(KERN_ERR "eeprom read fails\n");
goto out;
}
out:
- if (ifx_ssc_close((struct inode *) 0, NULL))
- printk("ifxmips_eeprom_close fails\n");
+ if (ifx_ssc_close((struct inode *)0, NULL))
+ printk(KERN_ERR "ifxmips_ssc_close fails\n");
return len;
}
EXPORT_SYMBOL(ifxmips_eeprom_read);
-static ssize_t
-ifxmips_eeprom_fops_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+static ssize_t ifxmips_eeprom_fops_read(struct file *filp, char *ubuf, size_t len, loff_t *off)
{
int ret = 0;
unsigned char ssc_rx_buf[EEPROM_SIZE];
- long flag;
+ unsigned long flag;
if (*off >= EEPROM_SIZE)
return 0;
local_irq_save(flag);
- if ((ret = ifxmips_eeprom_read(ssc_rx_buf, len, *off)) < 0)
- {
- printk("read fails, err=%x\n", ret);
+ if ((ret = ifxmips_eeprom_read(ssc_rx_buf, len, *off)) < 0) {
+ printk(KERN_ERR "read fails, err=%x\n", ret);
local_irq_restore(flag);
return ret;
}
- if (copy_to_user((void*)ubuf, ssc_rx_buf, ret) != 0)
- {
+ if (copy_to_user((void *)ubuf, ssc_rx_buf, ret) != 0) {
local_irq_restore(flag);
ret = -EFAULT;
}
return len;
}
-ssize_t
-ifxmips_eeprom_write (char *buf, size_t len, unsigned int addr)
+ssize_t ifxmips_eeprom_write(char *buf, size_t len, unsigned int addr)
{
int ret = 0;
unsigned int data;
- if ((ret = ifx_ssc_open ((struct inode *) 0, NULL)))
- {
- printk ("ifxmips_eeprom_open fails\n");
+ if ((ret = ifx_ssc_open((struct inode *)0, NULL))) {
+ printk(KERN_ERR "ifxmips_ssc_open fails\n");
goto out;
}
data = (unsigned int) IFX_SSC_MODE_RXTX;
- if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
- {
- printk ("set RXTX mode fails\n");
+ if ((ret = ifx_ssc_ioctl((struct inode *)0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data))) {
+ printk(KERN_ERR "set RXTX mode fails\n");
goto out;
}
- if ((ret = eeprom_wrsr ())) {
- printk ("EEPROM reset fails\n");
+ if ((ret = eeprom_wrsr())) {
+ printk(KERN_ERR "EEPROM reset fails\n");
goto out;
}
- if ((ret = eeprom_write (addr, buf, len))) {
- printk ("eeprom write fails\n");
+ if ((ret = eeprom_write(addr, buf, len))) {
+ printk(KERN_ERR "eeprom write fails\n");
goto out;
}
out:
- if (ifx_ssc_close ((struct inode *) 0, NULL))
- printk ("ifxmips_eeprom_close fails\n");
+ if (ifx_ssc_close((struct inode *)0, NULL))
+ printk(KERN_ERR "ifxmips_ssc_close fails\n");
return ret;
}
EXPORT_SYMBOL(ifxmips_eeprom_write);
-static ssize_t
-ifxmips_eeprom_fops_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
+static ssize_t ifxmips_eeprom_fops_write(struct file *filp, const char *ubuf, size_t len, loff_t *off)
{
int ret = 0;
unsigned char ssc_tx_buf[EEPROM_SIZE];
if (len + *off > EEPROM_SIZE)
len = EEPROM_SIZE - *off;
- if ((ret = copy_from_user (ssc_tx_buf, ubuf, len)))
+ if ((ret = copy_from_user(ssc_tx_buf, ubuf, len)))
return EFAULT;
- ret = ifxmips_eeprom_write (ssc_tx_buf, len, *off);
+ ret = ifxmips_eeprom_write(ssc_tx_buf, len, *off);
if (ret > 0)
*off = ret;
return ret;
}
-loff_t
-ifxmips_eeprom_llseek (struct file * filp, loff_t off, int whence)
+loff_t ifxmips_eeprom_llseek(struct file *filp, loff_t off, int whence)
{
loff_t newpos;
switch (whence) {
}
static struct file_operations ifxmips_eeprom_fops = {
- owner:THIS_MODULE,
- llseek:ifxmips_eeprom_llseek,
- read:ifxmips_eeprom_fops_read,
- write:ifxmips_eeprom_fops_write,
- ioctl:ifxmips_eeprom_ioctl,
- open:ifxmips_eeprom_open,
- release:ifxmips_eeprom_close,
+ .owner = THIS_MODULE,
+ .llseek = ifxmips_eeprom_llseek,
+ .read = ifxmips_eeprom_fops_read,
+ .write = ifxmips_eeprom_fops_write,
+ .ioctl = ifxmips_eeprom_ioctl,
+ .open = ifxmips_eeprom_open,
+ .release = ifxmips_eeprom_close,
};
-int __init
-ifxmips_eeprom_init (void)
+int __init ifxmips_eeprom_init(void)
{
int ret = 0;
ifxmips_eeprom_maj = register_chrdev(0, "eeprom", &ifxmips_eeprom_fops);
- if (ifxmips_eeprom_maj < 0)
- {
- printk("failed to register eeprom device\n");
+ if (ifxmips_eeprom_maj < 0) {
+ printk(KERN_ERR "failed to register eeprom device\n");
ret = -EINVAL;
-
+
goto out;
}
- printk("ifxmips_eeprom : /dev/eeprom mayor %d\n", ifxmips_eeprom_maj);
+ printk(KERN_INFO "ifxmips_eeprom : /dev/eeprom mayor %d\n", ifxmips_eeprom_maj);
out:
return ret;
}
-void __exit
-ifxmips_eeprom_cleanup_module (void)
+void __exit ifxmips_eeprom_cleanup_module(void)
{
- /*if (unregister_chrdev (ifxmips_eeprom_maj, "eeprom")) {
- printk ("Unable to unregister major %d for the EEPROM\n",
+ /*if (unregister_chrdev(ifxmips_eeprom_maj, "eeprom")) {
+ printk(KERN_ERR "Unable to unregister major %d for the EEPROM\n",
maj);
}*/
}
-module_exit (ifxmips_eeprom_cleanup_module);
-module_init (ifxmips_eeprom_init);
-
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Peng Liu");
-MODULE_DESCRIPTION ("IFAP EEPROM driver");
-MODULE_SUPPORTED_DEVICE ("ifxmips_eeprom");
+module_exit(ifxmips_eeprom_cleanup_module);
+module_init(ifxmips_eeprom_init);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Peng Liu");
+MODULE_DESCRIPTION("IFAP EEPROM driver");
+MODULE_SUPPORTED_DEVICE("ifxmips_eeprom");
projects / openwrt.git / blobdiff