add proper led support to ifxmips
[openwrt/svn-archive/archive.git] / target / linux / ifxmips / files / drivers / char / ifxmips_led.c
index b0b8e82..0e87fd2 100644 (file)
 #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 IFXMIPS_LED_CLK_EDGE                           IFXMIPS_LED_FALLING
+#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_LED_GPIO_PORT                  0
+
+#define IFXMIPS_MAX_LED                                        24
 
-static int ifxmips_led_major;
+struct ifxmips_led {
+       struct led_classdev cdev;
+       u8 bit;
+};
 
 void
 ifxmips_led_set (unsigned int led)
@@ -72,6 +82,17 @@ ifxmips_led_blink_clear (unsigned int led)
 }
 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)
 {
@@ -88,59 +109,9 @@ ifxmips_led_setup_gpio (void)
 }
 
 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)
+ifxmips_led_probe(struct platform_device *dev)
 {
-       int ret = 0;
+       int i = 0;
 
        ifxmips_led_setup_gpio();
 
@@ -171,26 +142,50 @@ ifxmips_led_init (void)
        /* 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)
+       for(i = 0; i < IFXMIPS_MAX_LED; i++)
        {
-               printk("ifxmips_led: Error! Could not register device. %d\n", ifxmips_led_major);
-               ret = -EINVAL;
-
-               goto out;
+               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);
        }
 
-       printk(KERN_INFO "ifxmips_led : device registered on major %d\n", ifxmips_led_major);
+       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!");
 
-out:
        return ret;
 }
 
 void __exit
 ifxmips_led_exit (void)
 {
-       unregister_chrdev(ifxmips_led_major, "ifxmips_led");
+       platform_driver_unregister(&ifxmips_led_driver);
 }
 
 module_init(ifxmips_led_init);