arch/mips/ath79/dev-leds-gpio.c

   1 /*
   2  *  Atheros AR71XX/AR724X/AR913X common GPIO LEDs support
   3  *
   4  *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify it
   8  *  under the terms of the GNU General Public License version 2 as published
   9  *  by the Free Software Foundation.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/slab.h>
  14 #include <linux/platform_device.h>
  15
  16 #include "dev-leds-gpio.h"
  17
  18 void __init ath79_register_leds_gpio(int id,
  19                                      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 }