release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/include/asm/mach-bcm47xx/gpio.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
   7  */
   8
   9 #ifndef __BCM47XX_GPIO_H
  10 #define __BCM47XX_GPIO_H
  11
  12 #include <linux/ssb/ssb_embedded.h>
  13 #include <asm/mach-bcm47xx/bcm47xx.h>
  14
  15 #define BCM47XX_EXTIF_GPIO_LINES        5
  16 #define BCM47XX_CHIPCO_GPIO_LINES       16
  17
  18 extern int gpio_request(unsigned gpio, const char *label);
  19 extern void gpio_free(unsigned gpio);
  20 extern int gpio_to_irq(unsigned gpio);
  21
  22 static inline int gpio_get_value(unsigned gpio)
  23 {
  24         return ssb_gpio_in(&ssb_bcm47xx, 1 << gpio);
  25 }
  26
  27 static inline void gpio_set_value(unsigned gpio, int value)
  28 {
  29         ssb_gpio_out(&ssb_bcm47xx, 1 << gpio, value ? 1 << gpio : 0);
  30 }
  31
  32 static inline int gpio_direction_input(unsigned gpio)
  33 {
  34         ssb_gpio_outen(&ssb_bcm47xx, 1 << gpio, 0);
  35         return 0;
  36 }
  37
  38 static inline int gpio_direction_output(unsigned gpio, int value)
  39 {
  40         /* first set the gpio out value */
  41         ssb_gpio_out(&ssb_bcm47xx, 1 << gpio, value ? 1 << gpio : 0);
  42         /* then set the gpio mode */
  43         ssb_gpio_outen(&ssb_bcm47xx, 1 << gpio, 1 << gpio);
  44         return 0;
  45 }
  46
  47 static inline int gpio_intmask(unsigned gpio, int value)
  48 {
  49         ssb_gpio_intmask(&ssb_bcm47xx, 1 << gpio,
  50                          value ? 1 << gpio : 0);
  51         return 0;
  52 }
  53
  54 static inline int gpio_polarity(unsigned gpio, int value)
  55 {
  56         ssb_gpio_polarity(&ssb_bcm47xx, 1 << gpio,
  57                           value ? 1 << gpio : 0);
  58         return 0;
  59 }
  60
  61
  62 /* cansleep wrappers */
  63 #include <asm-generic/gpio.h>
  64
  65 #endif /* __BCM47XX_GPIO_H */