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/slab.h>
  16 #include <linux/platform_device.h>
  17
  18 #include "dev-leds-gpio.h"
  19
  20 void __init ar71xx_add_device_leds_gpio(int id, unsigned num_leds,
  21                                         struct gpio_led *leds)
  22 {
  23         struct platform_device *pdev;
  24         struct gpio_led_platform_data pdata;
  25         struct gpio_led *p;
  26         int err;
  27
  28         p = kmalloc(num_leds * sizeof(*p), GFP_KERNEL);
  29         if (!p)
  30                 return;
  31
  32         memcpy(p, leds, num_leds * sizeof(*p));
  33
  34         pdev = platform_device_alloc("leds-gpio", id);
  35         if (!pdev)
  36                 goto err_free_leds;
  37
  38         memset(&pdata, 0, sizeof(pdata));
  39         pdata.num_leds = num_leds;
  40         pdata.leds = p;
  41
  42         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
  43         if (err)
  44                 goto err_put_pdev;
  45
  46         err = platform_device_add(pdev);
  47         if (err)
  48                 goto err_put_pdev;
  49
  50         return;
  51
  52 err_put_pdev:
  53         platform_device_put(pdev);
  54
  55 err_free_leds:
  56         kfree(p);
  57 }