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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2006 infineon
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <linux/errno.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_gpio.h>
#include <asm/ifxmips/ifxmips_pmu.h>
#define DRVNAME "ifxmips_led"
#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_FALLING
//#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_RISING
#define IFXMIPS_LED_SPEED IFXMIPS_LED_8HZ
#define IFXMIPS_LED_GPIO_PORT 0
static int ifxmips_led_major;
void
ifxmips_led_set (unsigned int led)
{
led &= 0xffffff;
writel(readl(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
}
EXPORT_SYMBOL(ifxmips_led_set);
void
ifxmips_led_clear (unsigned int led)
{
led = ~(led & 0xffffff);
writel(readl(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
}
EXPORT_SYMBOL(ifxmips_led_clear);
void
ifxmips_led_blink_set (unsigned int led)
{
led &= 0xffffff;
writel(readl(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
}
EXPORT_SYMBOL(ifxmips_led_blink_set);
void
ifxmips_led_blink_clear (unsigned int led)
{
led = ~(led & 0xffffff);
writel(readl(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
}
EXPORT_SYMBOL(ifxmips_led_blink_clear);
void
ifxmips_led_setup_gpio (void)
{
int i = 0;
/* we need to setup pins SH,D,ST (4,5,6) */
for (i = 4; i < 7; i++)
{
ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
}
}
static int
led_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = -EINVAL;
switch ( cmd )
{
}
return ret;
}
static int
led_open (struct inode *inode, struct file *file)
{
return 0;
}
static int
led_release (struct inode *inode, struct file *file)
{
return 0;
}
static struct file_operations ifxmips_led_fops = {
.owner = THIS_MODULE,
.ioctl = led_ioctl,
.open = led_open,
.release = led_release
};
static int
ifxmips_led_probe(struct platform_device *dev)
{
int ret = 0;
ifxmips_led_setup_gpio();
writel(0, IFXMIPS_LED_AR);
writel(0, IFXMIPS_LED_CPU0);
writel(0, IFXMIPS_LED_CPU1);
writel(LED_CON0_SWU, IFXMIPS_LED_CON0);
writel(0, IFXMIPS_LED_CON1);
/* setup the clock edge that the shift register is triggered on */
writel(readl(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK, IFXMIPS_LED_CON0);
writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE, IFXMIPS_LED_CON0);
/* per default leds 15-0 are set */
writel(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
/* leds are update periodically by the FPID */
writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK, IFXMIPS_LED_CON1);
writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI, IFXMIPS_LED_CON1);
/* set led update speed */
writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK, IFXMIPS_LED_CON1);
writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED, IFXMIPS_LED_CON1);
/* adsl 0 and 1 leds are updated by the arc */
writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC, IFXMIPS_LED_CON0);
/* per default, the leds are turned on */
ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
ifxmips_led_major = register_chrdev(0, "ifxmips_led", &ifxmips_led_fops);
if (!ifxmips_led_major)
{
printk("ifxmips_led: Error! Could not register device. %d\n", ifxmips_led_major);
ret = -EINVAL;
goto out;
}
printk(KERN_INFO "ifxmips_led: device successfully initialized #%d.\n", ifxmips_led_major);
out:
return ret;
}
static int
ifxmips_led_remove(struct platform_device *pdev)
{
unregister_chrdev(ifxmips_led_major, "ifxmips_led");
return 0;
}
static struct
platform_driver ifxmips_led_driver = {
.probe = ifxmips_led_probe,
.remove = ifxmips_led_remove,
.driver = {
.name = DRVNAME,
.owner = THIS_MODULE,
},
};
/*
Map for LED on reference board
WLAN_READ LED11 OUT1 15
WARNING LED12 OUT2 14
FXS1_LINK LED13 OUT3 13
FXS2_LINK LED14 OUT4 12
FXO_ACT LED15 OUT5 11
USB_LINK LED16 OUT6 10
ADSL2_LINK LED19 OUT7 9
BT_LINK LED17 OUT8 8
SD_LINK LED20 OUT9 7
ADSL2_TRAFFIC LED31 OUT16 0
Map for hardware relay on reference board
USB Power On OUT11 5
RELAY OUT12 4
*/
int __init
ifxmips_led_init (void)
{
int ret = platform_driver_register(&ifxmips_led_driver);
if (ret)
printk(KERN_INFO "ifxmips_led: Error registering platfom driver!");
return ret;
}
void __exit
ifxmips_led_exit (void)
{
platform_driver_unregister(&ifxmips_led_driver);
}
module_init(ifxmips_led_init);
module_exit(ifxmips_led_exit);
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