/* * Copyright 2013 Google Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __CPU_TI_AM335X_GPIO_H__ #define __CPU_TI_AM335X_GPIO_H__ #include <stdint.h> enum { AM335X_GPIO_BITS_PER_BANK = 32 }; struct am335x_gpio_regs { uint32_t revision; // 0x0 uint8_t _rsv0[0xc]; // 0x4-0xf uint32_t sysconfig; // 0x10 uint8_t _rsv1[0xc]; // 0x14-0x1f uint32_t eoi; // 0x20 uint32_t irqstatus_raw_0; // 0x24 uint32_t irqstatus_raw_1; // 0x28 uint32_t irqstatus_0; // 0x2c uint32_t irqstatus_1; // 0x30 uint32_t irqstatus_set_0; // 0x34 uint32_t irqstatus_set_1; // 0x38 uint32_t irqstatus_clr_0; // 0x3c uint32_t irqstatus_clk_1; // 0x40 uint32_t irqwaken_0; // 0x44 uint32_t irqwaken_1; // 0x48 uint8_t _rsv2[0xc8]; // 0x4c-0x113 uint32_t sysstatus; // 0x114 uint8_t _rsv3[0x18]; // 0x118-0x12f uint32_t ctrl; // 0x130 uint32_t oe; // 0x134 uint32_t datain; // 0x138 uint32_t dataout; // 0x13c uint32_t leveldetect0; // 0x140 uint32_t leveldetect1; // 0x144 uint32_t risingdetect; // 0x148 uint32_t fallingdetect; // 0x14c uint32_t debouncenable; // 0x150 uint32_t debouncingtime; // 0x154 uint8_t _rsv4[0x38]; // 0x158-0x18f uint32_t cleardataout; // 0x190 uint32_t setdataout; // 0x194 } __attribute__((packed)); static struct am335x_gpio_regs * const am335x_gpio_banks[] = { (void *)0x44e07000, (void *)0x4804c000, (void *)0x481ac000, (void *)0x481ae000 }; void am335x_disable_gpio_irqs(void); int gpio_direction_input(unsigned gpio); int gpio_direction_output(unsigned gpio, int value); int gpio_get_value(unsigned gpio); int gpio_set_value(unsigned gpio, int value); #endif /* __CPU_TI_AM335X_CLOCK_H__ */