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 #include <linux/slab.h>
  14
  15 #include <asm/mach-ralink/dev-gpio-leds.h>
  16
  17 void __init ramips_register_gpio_leds(int id, unsigned num_leds,
  18                                       struct gpio_led *leds)
  19 {
  20         struct platform_device *pdev;
  21         struct gpio_led_platform_data pdata;
  22         struct gpio_led *p;
  23         int err;
  24
  25         p = kmalloc(num_leds * sizeof(*p), GFP_KERNEL);
  26         if (!p)
  27                 return;
  28
  29         memcpy(p, leds, num_leds * sizeof(*p));
  30
  31         pdev = platform_device_alloc("leds-gpio", id);
  32         if (!pdev)
  33                 goto err_free_leds;
  34
  35         memset(&pdata, 0, sizeof(pdata));
  36         pdata.num_leds = num_leds;
  37         pdata.leds = p;
  38
  39         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
  40         if (err)
  41                 goto err_put_pdev;
  42
  43         err = platform_device_add(pdev);
  44         if (err)
  45                 goto err_put_pdev;
  46
  47         return;
  48
  49 err_put_pdev:
  50         platform_device_put(pdev);
  51
  52 err_free_leds:
  53         kfree(p);
  54 }