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Linux/arch/m68knommu/platform/5407/gpio.c

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  1 /*
  2  * Coldfire generic GPIO support
  3  *
  4  * (C) Copyright 2009, Steven King <sfking@fdwdc.com>
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License as published by
  8  * the Free Software Foundation; version 2 of the License.
  9  *
 10  * This program is distributed in the hope that it will be useful,
 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  * GNU General Public License for more details.
 14 */
 15 
 16 #include <linux/kernel.h>
 17 #include <linux/init.h>
 18 
 19 #include <asm/coldfire.h>
 20 #include <asm/mcfsim.h>
 21 #include <asm/mcfgpio.h>
 22 
 23 static struct mcf_gpio_chip mcf_gpio_chips[] = {
 24         {
 25                 .gpio_chip                      = {
 26                         .label                  = "PP",
 27                         .request                = mcf_gpio_request,
 28                         .free                   = mcf_gpio_free,
 29                         .direction_input        = mcf_gpio_direction_input,
 30                         .direction_output       = mcf_gpio_direction_output,
 31                         .get                    = mcf_gpio_get_value,
 32                         .set                    = mcf_gpio_set_value,
 33                         .ngpio                  = 16,
 34                 },
 35                 .pddr                           = MCFSIM_PADDR,
 36                 .podr                           = MCFSIM_PADAT,
 37                 .ppdr                           = MCFSIM_PADAT,
 38         },
 39 };
 40 
 41 static int __init mcf_gpio_init(void)
 42 {
 43         unsigned i = 0;
 44         while (i < ARRAY_SIZE(mcf_gpio_chips))
 45                 (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]);
 46         return 0;
 47 }
 48 
 49 core_initcall(mcf_gpio_init);
 50 

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