target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c

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