diff options
Diffstat (limited to 'target/linux/ifxmips/files/drivers/char/ifxmips_led.c')
| -rw-r--r-- | target/linux/ifxmips/files/drivers/char/ifxmips_led.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/target/linux/ifxmips/files/drivers/char/ifxmips_led.c b/target/linux/ifxmips/files/drivers/char/ifxmips_led.c new file mode 100644 index 0000000000..b0b8e82899 --- /dev/null +++ b/target/linux/ifxmips/files/drivers/char/ifxmips_led.c @@ -0,0 +1,197 @@ +/* + * 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 <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 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 +}; + + +/* +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 = 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 registered on major %d\n", ifxmips_led_major); + +out: + return ret; +} + +void __exit +ifxmips_led_exit (void) +{ + unregister_chrdev(ifxmips_led_major, "ifxmips_led"); +} + +module_init(ifxmips_led_init); +module_exit(ifxmips_led_exit); |