/*
* 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/miscdevice.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <linux/errno.h>
#include <asm/danube/danube.h>
#include <asm/danube/danube_gpio.h>
#define LED_CONFIG 0x01
#define CONFIG_OPERATION_UPDATE_SOURCE 0x0001
#define CONFIG_OPERATION_BLINK 0x0002
#define CONFIG_OPERATION_UPDATE_CLOCK 0x0004
#define CONFIG_OPERATION_STORE_MODE 0x0008
#define CONFIG_OPERATION_SHIFT_CLOCK 0x0010
#define CONFIG_OPERATION_DATA_OFFSET 0x0020
#define CONFIG_OPERATION_NUMBER_OF_LED 0x0040
#define CONFIG_OPERATION_DATA 0x0080
#define CONFIG_OPERATION_MIPS0_ACCESS 0x0100
#define CONFIG_DATA_CLOCK_EDGE 0x0200
#define DANUBE_LED_CLK_EDGE DANUBE_LED_FALLING
//#define DANUBE_LED_CLK_EDGE DANUBE_LED_RISING
#define LED_SH_PORT 0
#define LED_SH_PIN 4
#define LED_SH_DIR 1
#define LED_SH_ALTSEL0 1
#define LED_SH_ALTSEL1 0
#define LED_SH_OPENDRAIN 1
#define LED_D_PORT 0
#define LED_D_PIN 5
#define LED_D_DIR 1
#define LED_D_ALTSEL0 1
#define LED_D_ALTSEL1 0
#define LED_D_OPENDRAIN 1
#define LED_ST_PORT 0
#define LED_ST_PIN 6
#define LED_ST_DIR 1
#define LED_ST_ALTSEL0 1
#define LED_ST_ALTSEL1 0
#define LED_ST_OPENDRAIN 1
#define LED_ADSL0_PORT 0
#define LED_ADSL0_PIN 4
#define LED_ADSL0_DIR 1
#define LED_ADSL0_ALTSEL0 0
#define LED_ADSL0_ALTSEL1 1
#define LED_ADSL0_OPENDRAIN 1
#define LED_ADSL1_PORT 0
#define LED_ADSL1_PIN 5
#define LED_ADSL1_DIR 1
#define LED_ADSL1_ALTSEL0 1
#define LED_ADSL1_ALTSEL1 1
#define LED_ADSL1_OPENDRAIN 1
#if (LED_SH_PORT == LED_ADSL0_PORT && LED_SH_PIN == LED_ADSL0_PIN) \
|| (LED_D_PORT == LED_ADSL0_PORT && LED_D_PIN == LED_ADSL0_PIN) \
|| (LED_ST_PORT == LED_ADSL0_PORT && LED_ST_PIN == LED_ADSL0_PIN) \
|| (LED_SH_PORT == LED_ADSL1_PORT && LED_SH_PIN == LED_ADSL1_PIN) \
|| (LED_D_PORT == LED_ADSL1_PORT && LED_D_PIN == LED_ADSL1_PIN) \
|| (LED_ST_PORT == LED_ADSL1_PORT && LED_ST_PIN == LED_ADSL1_PIN)
#define ADSL_LED_IS_EXCLUSIVE 1
#else
#define ADSL_LED_IS_EXCLUSIVE 0
#endif
#if LED_SH_DIR
#define LED_SH_DIR_SETUP danube_port_set_dir_out
#else
#define LED_SH_DIR_SETUP danube_port_clear_dir_out
#endif
#if LED_SH_ALTSEL0
#define LED_SH_ALTSEL0_SETUP danube_port_set_altsel0
#else
#define LED_SH_ALTSEL0_SETUP danube_port_clear_altsel0
#endif
#if LED_SH_ALTSEL1
#define LED_SH_ALTSEL1_SETUP danube_port_set_altsel1
#else
#define LED_SH_ALTSEL1_SETUP danube_port_clear_altsel1
#endif
#if LED_SH_OPENDRAIN
#define LED_SH_OPENDRAIN_SETUP danube_port_set_open_drain
#else
#define LED_SH_OPENDRAIN_SETUP danube_port_clear_open_drain
#endif
#if LED_D_DIR
#define LED_D_DIR_SETUP danube_port_set_dir_out
#else
#define LED_D_DIR_SETUP danube_port_clear_dir_out
#endif
#if LED_D_ALTSEL0
#define LED_D_ALTSEL0_SETUP danube_port_set_altsel0
#else
#define LED_D_ALTSEL0_SETUP danube_port_clear_altsel0
#endif
#if LED_D_ALTSEL1
#define LED_D_ALTSEL1_SETUP danube_port_set_altsel1
#else
#define LED_D_ALTSEL1_SETUP danube_port_clear_altsel1
#endif
#if LED_D_OPENDRAIN
#define LED_D_OPENDRAIN_SETUP danube_port_set_open_drain
#else
#define LED_D_OPENDRAIN_SETUP danube_port_clear_open_drain
#endif
#if LED_ST_DIR
#define LED_ST_DIR_SETUP danube_port_set_dir_out
#else
#define LED_ST_DIR_SETUP danube_port_clear_dir_out
#endif
#if LED_ST_ALTSEL0
#define LED_ST_ALTSEL0_SETUP danube_port_set_altsel0
#else
#define LED_ST_ALTSEL0_SETUP danube_port_clear_altsel0
#endif
#if LED_ST_ALTSEL1
#define LED_ST_ALTSEL1_SETUP danube_port_set_altsel1
#else
#define LED_ST_ALTSEL1_SETUP danube_port_clear_altsel1
#endif
#if LED_ST_OPENDRAIN
#define LED_ST_OPENDRAIN_SETUP danube_port_set_open_drain
#else
#define LED_ST_OPENDRAIN_SETUP danube_port_clear_open_drain
#endif
#if LED_ADSL0_DIR
#define LED_ADSL0_DIR_SETUP danube_port_set_dir_out
#else
#define LED_ADSL0_DIR_SETUP danube_port_clear_dir_out
#endif
#if LED_ADSL0_ALTSEL0
#define LED_ADSL0_ALTSEL0_SETUP danube_port_set_altsel0
#else
#define LED_ADSL0_ALTSEL0_SETUP danube_port_clear_altsel0
#endif
#if LED_ADSL0_ALTSEL1
#define LED_ADSL0_ALTSEL1_SETUP danube_port_set_altsel1
#else
#define LED_ADSL0_ALTSEL1_SETUP danube_port_clear_altsel1
#endif
#if LED_ADSL0_OPENDRAIN
#define LED_ADSL0_OPENDRAIN_SETUP danube_port_set_open_drain
#else
#define LED_ADSL0_OPENDRAIN_SETUP danube_port_clear_open_drain
#endif
#if LED_ADSL1_DIR
#define LED_ADSL1_DIR_SETUP danube_port_set_dir_out
#else
#define LED_ADSL1_DIR_SETUP danube_port_clear_dir_out
#endif
#if LED_ADSL1_ALTSEL0
#define LED_ADSL1_ALTSEL0_SETUP danube_port_set_altsel0
#else
#define LED_ADSL1_ALTSEL0_SETUP danube_port_clear_altsel0
#endif
#if LED_ADSL1_ALTSEL1
#define LED_ADSL1_ALTSEL1_SETUP danube_port_set_altsel1
#else
#define LED_ADSL1_ALTSEL1_SETUP danube_port_clear_altsel1
#endif
#if LED_ADSL1_OPENDRAIN
#define LED_ADSL1_OPENDRAIN_SETUP danube_port_set_open_drain
#else
#define LED_ADSL1_OPENDRAIN_SETUP danube_port_clear_open_drain
#endif
#define SET_BITS(x, msb, lsb, value) (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
static int danube_led_major;
static int
danube_led_setup_gpio (void)
{
/*
* Set LED_ST
* I don't check the return value, because I'm sure the value is valid
* and the pins are reserved already.
*/
LED_ST_ALTSEL0_SETUP(LED_ST_PORT, LED_ST_PIN);
LED_ST_ALTSEL1_SETUP(LED_ST_PORT, LED_ST_PIN);
LED_ST_DIR_SETUP(LED_ST_PORT, LED_ST_PIN);
LED_ST_OPENDRAIN_SETUP(LED_ST_PORT, LED_ST_PIN);
/*
* Set LED_D
*/
LED_D_ALTSEL0_SETUP(LED_D_PORT, LED_D_PIN);
LED_D_ALTSEL1_SETUP(LED_D_PORT, LED_D_PIN);
LED_D_DIR_SETUP(LED_D_PORT, LED_D_PIN);
LED_D_OPENDRAIN_SETUP(LED_D_PORT, LED_D_PIN);
/*
* Set LED_SH
*/
LED_SH_ALTSEL0_SETUP(LED_SH_PORT, LED_SH_PIN);
LED_SH_ALTSEL1_SETUP(LED_SH_PORT, LED_SH_PIN);
LED_SH_DIR_SETUP(LED_SH_PORT, LED_SH_PIN);
LED_SH_OPENDRAIN_SETUP(LED_SH_PORT, LED_SH_PIN);
return 0;
}
static void
danube_led_enable (void)
{
int err = 1000000;
writel(readl(DANUBE_PMU_PWDCR) & ~DANUBE_PMU_PWDCR_LED, DANUBE_PMU_PWDCR);
while (--err && (readl(DANUBE_PMU_PWDSR) & DANUBE_PMU_PWDCR_LED)) {}
if (!err)
panic("Activating LED in PMU failed!");
}
static inline void
danube_led_disable (void)
{
writel(readl(DANUBE_PMU_PWDCR) | DANUBE_PMU_PWDCR_LED, DANUBE_PMU_PWDCR);
}
static int
led_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = -EINVAL;
switch ( cmd )
{
case LED_CONFIG:
break;
}
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 danube_led_fops = {
.owner = THIS_MODULE,
.ioctl = led_ioctl,
.open = led_open,
.release = led_release
};
/*
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
danube_led_init (void)
{
int ret = 0;
danube_led_setup_gpio();
writel(0, DANUBE_LED_AR);
writel(0xff00, DANUBE_LED_CPU0);
writel(0, DANUBE_LED_CPU1);
writel(0x8000ffff, DANUBE_LED_CON0);
/* setup the clock edge that the shift register is triggered on */
writel(readl(DANUBE_LED_CON0) & ~DANUBE_LED_EDGE_MASK, DANUBE_LED_CON0);
writel(readl(DANUBE_LED_CON0) | DANUBE_LED_CLK_EDGE, DANUBE_LED_CON0);
/* per default leds 15-0 are set */
writel(DANUBE_LED_GROUP1 | DANUBE_LED_GROUP0, DANUBE_LED_CON1);
/* leds are update periodically by the FPID */
writel(readl(DANUBE_LED_CON1) & ~DANUBE_LED_UPD_MASK, DANUBE_LED_CON1);
writel(readl(DANUBE_LED_CON1) | DANUBE_LED_UPD_SRC_FPI, DANUBE_LED_CON1);
/* set led update speed */
writel(readl(DANUBE_LED_CON1) & ~DANUBE_LED_MASK, DANUBE_LED_CON1);
writel(readl(DANUBE_LED_CON1) | DANUBE_LED_8HZ, DANUBE_LED_CON1);
/* adsl 0 and 1 leds are updated by the arc */
writel(readl(DANUBE_LED_CON0) | DANUBE_LED_ADSL_SRC, DANUBE_LED_CON0);
/* per default, the leds are turned on */
danube_led_enable();
danube_led_major = register_chrdev(0, "danube_led", &danube_led_fops);
if (!danube_led_major)
{
printk("danube_led: Error! Could not register device. %d\n", danube_led_major);
ret = -EINVAL;
goto out;
}
printk(KERN_INFO "danube_led : device registered on major %d\n", danube_led_major);
out:
return ret;
}
void __exit
danube_led_exit (void)
{
unregister_chrdev(danube_led_major, "danube_led");
}
module_init(danube_led_init);
module_exit(danube_led_exit);