Signed-off-by: Tom Warren twarren@nvidia.com --- arch/arm/include/asm/arch-tegra2/gpio.h | 59 +++++++++++++++++++++++++++++ arch/arm/include/asm/arch-tegra2/tegra2.h | 1 + 2 files changed, 60 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/arch-tegra2/gpio.h
diff --git a/arch/arm/include/asm/arch-tegra2/gpio.h b/arch/arm/include/asm/arch-tegra2/gpio.h new file mode 100644 index 0000000..0fb8f0d --- /dev/null +++ b/arch/arm/include/asm/arch-tegra2/gpio.h @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2011, Google Inc. All rights reserved. + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _TEGRA2_GPIO_H_ +#define _TEGRA2_GPIO_H_ + +/* + * The Tegra 2x GPIO controller has 222 GPIOs arranged in 8 banks of 4 ports, + * each with 8 GPIOs. + */ +#define TEGRA_GPIO_PORTS 4 /* The number of ports per bank */ +#define TEGRA_GPIO_BANKS 8 /* The number of banks */ + +/* GPIO Controller registers for a single bank */ +struct gpio_ctlr_bank { + uint gpio_config[TEGRA_GPIO_PORTS]; + uint gpio_dir_out[TEGRA_GPIO_PORTS]; + uint gpio_out[TEGRA_GPIO_PORTS]; + uint gpio_in[TEGRA_GPIO_PORTS]; + uint gpio_int_status[TEGRA_GPIO_PORTS]; + uint gpio_int_enable[TEGRA_GPIO_PORTS]; + uint gpio_int_level[TEGRA_GPIO_PORTS]; + uint gpio_int_clear[TEGRA_GPIO_PORTS]; +}; + +struct gpio_ctlr { + struct gpio_ctlr_bank gpio_bank[TEGRA_GPIO_BANKS]; +}; + +#define GPIO_BANK(x) ((x) >> 5) +#define GPIO_PORT(x) (((x) >> 3) & 0x3) +#define GPIO_BIT(x) ((x) & 0x7) + +/* + * GPIO_PI3 = Port I = 8, bit = 3. + * Seaboard: used for UART/SPI selection + * Harmony: not used + */ +#define GPIO_PI3 ((8 << 3) | 3) + +#endif /* TEGRA2_GPIO_H_ */ diff --git a/arch/arm/include/asm/arch-tegra2/tegra2.h b/arch/arm/include/asm/arch-tegra2/tegra2.h index 7b0f5cc..742a75a 100644 --- a/arch/arm/include/asm/arch-tegra2/tegra2.h +++ b/arch/arm/include/asm/arch-tegra2/tegra2.h @@ -30,6 +30,7 @@ #define NV_PA_TMRUS_BASE 0x60005010 #define NV_PA_CLK_RST_BASE 0x60006000 #define NV_PA_FLOW_BASE 0x60007000 +#define NV_PA_GPIO_BASE 0x6000D000 #define NV_PA_EVP_BASE 0x6000F000 #define NV_PA_APB_MISC_BASE 0x70000000 #define NV_PA_APB_UARTA_BASE (NV_PA_APB_MISC_BASE + 0x6000)