target/linux/ar71xx/files/arch/mips/ar71xx/dev-leds-gpio.c

   1 /*
   2  *  Atheros AR71xx GPIO LED device support
   3  *
   4  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  Parts of this file are based on Atheros' 2.6.15 BSP
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License version 2 as published
  11  *  by the Free Software Foundation.
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16
  17 #include "dev-leds-gpio.h"
  18
  19 void __init ar71xx_add_device_leds_gpio(int id, unsigned num_leds,
  20                                         struct gpio_led *leds)
  21 {
  22         struct platform_device *pdev;
  23         struct gpio_led_platform_data pdata;
  24         struct gpio_led *p;
  25         int err;
  26
  27         p = kmalloc(num_leds * sizeof(*p), GFP_KERNEL);
  28         if (!p)
  29                 return;
  30
  31         memcpy(p, leds, num_leds * sizeof(*p));
  32
  33         pdev = platform_device_alloc("leds-gpio", id);
  34         if (!pdev)
  35                 goto err_free_leds;
  36
  37         memset(&pdata, 0, sizeof(pdata));
  38         pdata.num_leds = num_leds;
  39         pdata.leds = p;
  40
  41         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
  42         if (err)
  43                 goto err_put_pdev;
  44
  45         err = platform_device_add(pdev);
  46         if (err)
  47                 goto err_put_pdev;
  48
  49         return;
  50
  51 err_put_pdev:
  52         platform_device_put(pdev);
  53
  54 err_free_leds:
  55         kfree(p);
  56 }