| /* |
| * Copyright (c) 2011, Google Inc. All rights reserved. |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #ifndef _TEGRA_GPIO_H_ |
| #define _TEGRA_GPIO_H_ |
| |
| #define TEGRA_GPIOS_PER_PORT 8 |
| #define TEGRA_PORTS_PER_BANK 4 |
| #define MAX_NUM_GPIOS (TEGRA_GPIO_PORTS * TEGRA_GPIO_BANKS * 8) |
| #define GPIO_NAME_SIZE 20 /* gpio_request max label len */ |
| |
| #define GPIO_BANK(x) ((x) >> 5) |
| #define GPIO_PORT(x) (((x) >> 3) & 0x3) |
| #define GPIO_FULLPORT(x) ((x) >> 3) |
| #define GPIO_BIT(x) ((x) & 0x7) |
| |
| enum tegra_gpio_init { |
| TEGRA_GPIO_INIT_IN, |
| TEGRA_GPIO_INIT_OUT0, |
| TEGRA_GPIO_INIT_OUT1, |
| }; |
| |
| struct tegra_gpio_config { |
| u32 gpio:16; |
| u32 init:2; |
| }; |
| |
| /** |
| * tegra_spl_gpio_direction_output() - set the output value of a GPIO |
| * |
| * This function is only used from SPL on seaboard, which needs to enable a |
| * GPIO to get the UART running. It could be done in U-Boot rather than SPL, |
| * but for now, this gets it working |
| */ |
| int tegra_spl_gpio_direction_output(int gpio, int value); |
| |
| /** |
| * Configure a list of GPIOs |
| * |
| * @param config List of GPIO configurations |
| * @param len Number of config items in list |
| */ |
| void gpio_config_table(const struct tegra_gpio_config *config, int len); |
| |
| #endif /* TEGRA_GPIO_H_ */ |
