arch/arm/include/asm/arch-armada100/gpio.h

   1 /*
   2  * (C) Copyright 2011
   3  * eInfochips Ltd. <www.einfochips.com>
   4  * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
   5  *
   6  * (C) Copyright 2010
   7  * Marvell Semiconductor <www.marvell.com>
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #ifndef _ASM_ARCH_GPIO_H
  13 #define _ASM_ARCH_GPIO_H
  14
  15 #include <asm/types.h>
  16 #include <asm/arch/armada100.h>
  17
  18 #define GPIO_HIGH               1
  19 #define GPIO_LOW                0
  20
  21 #define GPIO_TO_REG(gp)         (gp >> 5)
  22 #define GPIO_TO_BIT(gp)         (1 << (gp & 0x1F))
  23 #define GPIO_VAL(gp, val)       ((val >> (gp & 0x1F)) & 0x01)
  24
  25 static inline void *get_gpio_base(int bank)
  26 {
  27         const unsigned int offset[4] = {0, 4, 8, 0x100};
  28         /* gpio register bank offset - refer Appendix A.36 */
  29         return (struct gpio_reg *)(ARMD1_GPIO_BASE + offset[bank]);
  30 }
  31
  32 #endif /* _ASM_ARCH_GPIO_H */