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

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  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 = kmemdup(leds, num_leds * sizeof(*p), GFP_KERNEL);
 28         if (!p)
 29                 return;
 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 }
 55 

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