192 lines
5.1 KiB
C
192 lines
5.1 KiB
C
/*
|
|
* 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>
|
|
#include <linux/leds.h>
|
|
#include <linux/delay.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
|
|
|
|
#define IFXMIPS_MAX_LED 24
|
|
|
|
struct ifxmips_led {
|
|
struct led_classdev cdev;
|
|
u8 bit;
|
|
};
|
|
|
|
void
|
|
ifxmips_led_set (unsigned int led)
|
|
{
|
|
led &= 0xffffff;
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
|
|
}
|
|
EXPORT_SYMBOL(ifxmips_led_set);
|
|
|
|
void
|
|
ifxmips_led_clear (unsigned int led)
|
|
{
|
|
led = ~(led & 0xffffff);
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
|
|
}
|
|
EXPORT_SYMBOL(ifxmips_led_clear);
|
|
|
|
void
|
|
ifxmips_led_blink_set (unsigned int led)
|
|
{
|
|
led &= 0xffffff;
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
|
|
}
|
|
EXPORT_SYMBOL(ifxmips_led_blink_set);
|
|
|
|
void
|
|
ifxmips_led_blink_clear (unsigned int led)
|
|
{
|
|
led = ~(led & 0xffffff);
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
|
|
}
|
|
EXPORT_SYMBOL(ifxmips_led_blink_clear);
|
|
|
|
void
|
|
ifxmips_ledapi_set(struct led_classdev *led_cdev, enum led_brightness value)
|
|
{
|
|
struct ifxmips_led *led_dev = container_of(led_cdev, struct ifxmips_led, cdev);
|
|
|
|
if(value)
|
|
ifxmips_led_set(1 << led_dev->bit);
|
|
else
|
|
ifxmips_led_clear(1 << led_dev->bit);
|
|
}
|
|
|
|
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
|
|
ifxmips_led_probe(struct platform_device *dev)
|
|
{
|
|
int i = 0;
|
|
|
|
ifxmips_led_setup_gpio();
|
|
|
|
ifxmips_w32(0, IFXMIPS_LED_AR);
|
|
ifxmips_w32(0, IFXMIPS_LED_CPU0);
|
|
ifxmips_w32(0, IFXMIPS_LED_CPU1);
|
|
ifxmips_w32(LED_CON0_SWU, IFXMIPS_LED_CON0);
|
|
ifxmips_w32(0, IFXMIPS_LED_CON1);
|
|
|
|
/* setup the clock edge that the shift register is triggered on */
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK, IFXMIPS_LED_CON0);
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE, IFXMIPS_LED_CON0);
|
|
|
|
/* per default leds 15-0 are set */
|
|
ifxmips_w32(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
|
|
|
|
/* leds are update periodically by the FPID */
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK, IFXMIPS_LED_CON1);
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI, IFXMIPS_LED_CON1);
|
|
|
|
/* set led update speed */
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK, IFXMIPS_LED_CON1);
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED, IFXMIPS_LED_CON1);
|
|
|
|
/* adsl 0 and 1 leds are updated by the arc */
|
|
ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC, IFXMIPS_LED_CON0);
|
|
|
|
/* per default, the leds are turned on */
|
|
ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
|
|
|
|
for(i = 0; i < IFXMIPS_MAX_LED; i++)
|
|
{
|
|
struct ifxmips_led *tmp = kzalloc(sizeof(struct ifxmips_led), GFP_KERNEL);
|
|
tmp->cdev.brightness_set = ifxmips_ledapi_set;
|
|
tmp->cdev.name = kmalloc(sizeof("ifxmips:led:00"), GFP_KERNEL);
|
|
sprintf(tmp->cdev.name, "ifxmips:led:%02d", i);
|
|
tmp->cdev.default_trigger = NULL;
|
|
tmp->bit = i;
|
|
led_classdev_register(&dev->dev, &tmp->cdev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ifxmips_led_remove(struct platform_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct
|
|
platform_driver ifxmips_led_driver = {
|
|
.probe = ifxmips_led_probe,
|
|
.remove = ifxmips_led_remove,
|
|
.driver = {
|
|
.name = DRVNAME,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
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);
|