diff options
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/arch-mx6/gpio.h | 41 | ||||
| -rw-r--r-- | include/asm-arm/arch-mx6/imx-regs.h | 31 | ||||
| -rw-r--r-- | include/asm-arm/arch-mx6/iomux-v3.h | 9 | ||||
| -rw-r--r-- | include/asm-arm/arch-mx6/iomux.h | 22 | ||||
| -rw-r--r-- | include/asm-arm/gpio.h | 75 |
5 files changed, 178 insertions, 0 deletions
diff --git a/include/asm-arm/arch-mx6/gpio.h b/include/asm-arm/arch-mx6/gpio.h new file mode 100644 index 0000000..1f292f8 --- /dev/null +++ b/include/asm-arm/arch-mx6/gpio.h @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Auto Generate file, please don't edit it + * + */ + +#ifndef __MACH_MX6_GPIO_H__ +#define __MACH_MX6_GPIO_H__ + +#include <asm/arch/mx6.h> +#include <asm/arch/iomux.h> + +#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr)) + +void mxc_set_gpio_direction(iomux_pin_name_t pin, int is_input); + +void mxc_set_gpio_dataout(iomux_pin_name_t pin, u32 data); + +/*! + * @file mach-mx6/gpio.h + * + * @brief Simple GPIO definitions and functions + * + * @ingroup GPIO_MX6 + */ +#endif diff --git a/include/asm-arm/arch-mx6/imx-regs.h b/include/asm-arm/arch-mx6/imx-regs.h new file mode 100644 index 0000000..04abbb0 --- /dev/null +++ b/include/asm-arm/arch-mx6/imx-regs.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Auto Generate file, please don't edit it + * + */ + + +struct gpio_regs { + u32 gpio_dr; + u32 gpio_dir; + u32 gpio_psr; + u32 gpio_icr1; + u32 gpio_icr2; + u32 gpio_imr; + u32 gpio_isr; +}; diff --git a/include/asm-arm/arch-mx6/iomux-v3.h b/include/asm-arm/arch-mx6/iomux-v3.h index 50612ee..4ce38a5 100644 --- a/include/asm-arm/arch-mx6/iomux-v3.h +++ b/include/asm-arm/arch-mx6/iomux-v3.h @@ -55,6 +55,7 @@ */ typedef u64 iomux_v3_cfg_t; +typedef unsigned int iomux_pin_name_t; #define MUX_CTRL_OFS_SHIFT 0 #define MUX_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_CTRL_OFS_SHIFT) @@ -84,6 +85,14 @@ typedef u64 iomux_v3_cfg_t; MUX_SEL_INPUT_OFS_SHIFT) | \ ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT)) +#if defined CONFIG_MX6Q +#define MX6X_IOMUX(s) MX6Q_##s +#elif defined CONFIG_MX6DL +#define MX6X_IOMUX(s) MX6DL_##s +#elif defined CONFIG_MX6SL +#define MX6X_IOMUX(s) MX6SL_##s +#endif + /* * Use to set PAD control */ diff --git a/include/asm-arm/arch-mx6/iomux.h b/include/asm-arm/arch-mx6/iomux.h new file mode 100644 index 0000000..9c1e053 --- /dev/null +++ b/include/asm-arm/arch-mx6/iomux.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Auto Generate file, please don't edit it + * + */ + +#include "iomux-v3.h" diff --git a/include/asm-arm/gpio.h b/include/asm-arm/gpio.h new file mode 100644 index 0000000..b0f3f98 --- /dev/null +++ b/include/asm-arm/gpio.h @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * Copyright (C) 2012 Freescale Semiconductor, Inc. + * 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 + */ + +/* + * Generic GPIO API for U-Boot + * + * GPIOs are numbered from 0 to GPIO_COUNT-1 which value is defined + * by the SOC/architecture. + * + * Each GPIO can be an input or output. If an input then its value can + * be read as 0 or 1. If an output then its value can be set to 0 or 1. + * If you try to write an input then the value is undefined. If you try + * to read an output, barring something very unusual, you will get + * back the value of the output that you previously set. + * + * In some cases the operation may fail, for example if the GPIO number + * is out of range, or the GPIO is not available because its pin is + * being used by another function. In that case, functions may return + * an error value of -1. + */ + +/** + * Make a GPIO an input. + * + * @param gp GPIO number + * @return 0 if ok, -1 on error + */ +int gpio_direction_input(int gp); + +/** + * Make a GPIO an output, and set its value. + * + * @param gp GPIO number + * @param value GPIO value (0 for low or 1 for high) + * @return 0 if ok, -1 on error + */ +int gpio_direction_output(int gp, int value); + +/** + * Get a GPIO's value. This will work whether the GPIO is an input + * or an output. + * + * @param gp GPIO number + * @return 0 if low, 1 if high, -1 on error + */ +int gpio_get_value(int gp); + +/** + * Set an output GPIO's value. The GPIO must already be an output of + * this function may have no effect. + * + * @param gp GPIO number + * @param value GPIO value (0 for low or 1 for high) + * @return 0 if ok, -1 on error + */ +int gpio_set_value(int gp, int value); |