openwrtv3/target/linux/adm5120-2.6/files/drivers/leds/leds-adm5120.c

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/*
* $Id$
*
* ADM5120 GPIO LED devices
*
* Copyright (C) 2007 OpenWrt.org
* Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/gpio_leds.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/mach-adm5120/adm5120_info.h>
#define NUM_LEDS_MAX 23
#define ADM5120_GPIO_xxxx 0x100 /* an unknown pin */
struct mach_data {
unsigned long machtype;
unsigned count;
struct gpio_led_platform_data *data;
};
struct adm5120_leddev {
struct platform_device pdev;
struct gpio_led_platform_data pdata;
};
static int led_count = 0;
static struct adm5120_leddev *led_devs[NUM_LEDS_MAX];
#define LED_ARRAY(n) \
static struct gpio_led_platform_data \
n ## _leds [] __initdata =
#define LED_DATA(n,t,g,off,on) { \
.name = (n), \
.trigger = (t), \
.gpio = (g), \
.value_off = (off), \
.value_on = (on) \
}
#define LED_STD(g,n,t) LED_DATA((n),(t),(g), 0, 1)
#define LED_INV(g,n,t) LED_DATA((n),(t),(g), 1, 0)
/*
* ZyXEL boards
*/
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
LED_ARRAY(p334) { /* FIXME: untested */
LED_INV(ADM5120_GPIO_xxxx, "power", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "lan1", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "lan2", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "lan3", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "lan4", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "wan", NULL ),
};
#endif
LED_ARRAY(p334wt) {
LED_INV(ADM5120_GPIO_PIN2, "power", NULL ),
LED_INV(ADM5120_GPIO_P3L0, "lan1", NULL ),
LED_INV(ADM5120_GPIO_P2L0, "lan2", NULL ),
LED_INV(ADM5120_GPIO_P1L0, "lan3", NULL ),
LED_INV(ADM5120_GPIO_P0L0, "lan4", NULL ),
LED_INV(ADM5120_GPIO_P4L0, "wan", NULL ),
LED_INV(ADM5120_GPIO_P4L2, "wlan", NULL ),
LED_INV(ADM5120_GPIO_P2L2, "otist", NULL ),
LED_INV(ADM5120_GPIO_P1L2, "hidden", NULL ),
};
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
LED_ARRAY(p335) { /* FIXME: untested */
LED_INV(ADM5120_GPIO_PIN2, "power", NULL ),
LED_INV(ADM5120_GPIO_P3L0, "lan1", NULL ),
LED_INV(ADM5120_GPIO_P2L0, "lan2", NULL ),
LED_INV(ADM5120_GPIO_P1L0, "lan3", NULL ),
LED_INV(ADM5120_GPIO_P0L0, "lan4", NULL ),
LED_INV(ADM5120_GPIO_P4L0, "wan", NULL ),
LED_INV(ADM5120_GPIO_P4L2, "wlan", NULL ),
LED_INV(ADM5120_GPIO_P2L2, "otist", NULL ),
LED_INV(ADM5120_GPIO_xxxx, "usb", NULL ),
};
#endif
/*
* Mikrotik boards
*/
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
LED_ARRAY(rb100) { /* FIXME: untested */
LED_STD(ADM5120_GPIO_PIN6, "power", NULL ),
LED_STD(ADM5120_GPIO_PIN3, "user", NULL ),
};
#endif
/*
* Compex boards
*/
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
LED_ARRAY(np27g) { /* FIXME: untested */
LED_STD(ADM5120_GPIO_xxxx, "lan1", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "lan2", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "lan3", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "lan4", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "wan_cond", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "wlan", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "wan_act", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb1", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb2", NULL ),
LED_INV(ADM5120_GPIO_PIN2, "power", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "diag", NULL ),
};
#endif
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
LED_ARRAY(np28g) { /* FIXME: untested */
LED_STD(ADM5120_GPIO_xxxx, "lan1", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "lan2", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "lan3", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "wan", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "wlan", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb1", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb2", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb3", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "usb4", NULL ),
LED_INV(ADM5120_GPIO_PIN2, "power", NULL ),
LED_STD(ADM5120_GPIO_xxxx, "diag", NULL ),
};
#endif
LED_ARRAY(wp54g) {
LED_INV(ADM5120_GPIO_PIN2, "diag", NULL ),
LED_INV(ADM5120_GPIO_PIN6, "wlan", NULL ),
LED_INV(ADM5120_GPIO_PIN7, "wan", NULL ),
LED_INV(ADM5120_GPIO_P0L0, "lan1", NULL ),
LED_INV(ADM5120_GPIO_P1L0, "lan2", NULL ),
};
LED_ARRAY(unknown) {
#if defined(CONFIG_LEDS_ADM5120_DIAG)
LED_STD(ADM5120_GPIO_PIN0, "gpio0", NULL ),
LED_STD(ADM5120_GPIO_PIN1, "gpio1", NULL ),
LED_STD(ADM5120_GPIO_PIN2, "gpio2", NULL ),
LED_STD(ADM5120_GPIO_PIN3, "gpio3", NULL ),
LED_STD(ADM5120_GPIO_PIN4, "gpio4", NULL ),
LED_STD(ADM5120_GPIO_PIN5, "gpio5", NULL ),
LED_STD(ADM5120_GPIO_PIN6, "gpio6", NULL ),
LED_STD(ADM5120_GPIO_PIN7, "gpio7", NULL ),
LED_STD(ADM5120_GPIO_P0L0, "port0led0", NULL ),
LED_STD(ADM5120_GPIO_P0L1, "port0led1", NULL ),
LED_STD(ADM5120_GPIO_P0L2, "port0led2", NULL ),
LED_STD(ADM5120_GPIO_P1L0, "port1led0", NULL ),
LED_STD(ADM5120_GPIO_P1L1, "port1led1", NULL ),
LED_STD(ADM5120_GPIO_P1L2, "port1led2", NULL ),
LED_STD(ADM5120_GPIO_P2L0, "port2led0", NULL ),
LED_STD(ADM5120_GPIO_P2L1, "port2led1", NULL ),
LED_STD(ADM5120_GPIO_P2L2, "port2led2", NULL ),
LED_STD(ADM5120_GPIO_P3L0, "port3led0", NULL ),
LED_STD(ADM5120_GPIO_P3L1, "port3led1", NULL ),
LED_STD(ADM5120_GPIO_P3L2, "port3led2", NULL ),
LED_STD(ADM5120_GPIO_P4L0, "port4led0", NULL ),
LED_STD(ADM5120_GPIO_P4L1, "port4led1", NULL ),
LED_STD(ADM5120_GPIO_P4L2, "port4led2", NULL ),
#endif
};
#define MACH_DATA(m, n) { \
.machtype = (m), \
.count = ARRAY_SIZE(n ## _leds), \
.data = n ## _leds \
}
static struct mach_data machines[] __initdata = {
MACH_DATA(MACH_ADM5120_UNKNOWN, unknown),
MACH_DATA(MACH_ADM5120_P334WT, p334wt),
MACH_DATA(MACH_ADM5120_WP54AG, wp54g),
MACH_DATA(MACH_ADM5120_WP54G, wp54g),
MACH_DATA(MACH_ADM5120_WP54G_WRT, wp54g),
MACH_DATA(MACH_ADM5120_WPP54AG, wp54g),
MACH_DATA(MACH_ADM5120_WPP54G, wp54g),
#if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
MACH_DATA(MACH_ADM5120_P334, p334),
MACH_DATA(MACH_ADM5120_P335, p335),
MACH_DATA(MACH_ADM5120_RB_111, rb100),
MACH_DATA(MACH_ADM5120_RB_112, rb100),
MACH_DATA(MACH_ADM5120_NP27G, np27g),
MACH_DATA(MACH_ADM5120_NP28G, np28g),
MACH_DATA(MACH_ADM5120_NP28GHS, np28g),
#endif
};
static struct adm5120_leddev * __init
create_leddev(struct gpio_led_platform_data *data)
{
struct adm5120_leddev *p;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL)
return NULL;
memcpy(&p->pdata, data, sizeof(p->pdata));
p->pdev.dev.platform_data = &p->pdata;
return p;
}
static void
destroy_leddev(struct adm5120_leddev *led)
{
if (led)
kfree(led);
}
static struct mach_data * __init
adm5120_leds_findmach(unsigned long machtype)
{
struct mach_data *mach;
int i;
mach = NULL;
for (i=0; i<ARRAY_SIZE(machines); i++) {
if (machines[i].machtype == machtype) {
mach = &machines[i];
break;
}
};
#if defined(CONFIG_LEDS_ADM5120_DIAG)
if (mach == NULL)
mach = machines;
#endif
return mach;
}
static int __init
adm5120_leds_init(void)
{
struct mach_data *mach;
int i, ret;
if (mips_machgroup != MACH_GROUP_ADM5120) {
ret = -EINVAL;
goto err;
}
mach = adm5120_leds_findmach(mips_machtype);
if (mach == NULL) {
/* the board is not yet supported */
ret = -EINVAL;
goto err;
}
for (i=0; i < mach->count; i++) {
led_devs[i] = create_leddev(&mach->data[i]);
if (led_devs[i] == NULL) {
ret = -ENOMEM;
goto err_destroy;
}
led_devs[i]->pdev.name = "gpio-led";
led_devs[i]->pdev.id = i;
}
for (i=0; i < mach->count; i++) {
ret = platform_device_register(&led_devs[i]->pdev);
if (ret)
goto err_unregister;
}
led_count = mach->count;
return 0;
err_unregister:
for (i--; i>=0; i--)
platform_device_unregister(&led_devs[i]->pdev);
err_destroy:
for (i=0; i<led_count; i++)
destroy_leddev(led_devs[i]);
err:
return ret;
}
static void __exit
adm5120_leds_exit(void)
{
int i;
for (i=0; i < led_count; i++) {
platform_device_unregister(&led_devs[i]->pdev);
destroy_leddev(led_devs[i]);
}
}
module_init(adm5120_leds_init);
module_exit(adm5120_leds_exit);
MODULE_AUTHOR("Gabor Juhos <juhosg@freemail.hu>");
MODULE_DESCRIPTION(DRV_DESC);
MODULE_LICENSE("GPL");