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i.MX6: Add high-level GPIO header file

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This commit is contained in:
Gregory Nutt 2016-03-04 12:27:11 -06:00
parent 910e649616
commit 88f0d35bce
3 changed files with 323 additions and 3 deletions
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320
arch/arm/src/imx6/imx_gpio.h Normal file
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/************************************************************************************
* arch/arm/src/imx6/imx_gpio.h
*
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_IMX6_IMX_GPIO_H
#define __ARCH_ARM_SRC_IMX6_IMX_GPIO_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <chip/imx_gpio.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Encoding:
*
* ENCODING IRRR ODDD SSLT GGGP PPPP
* GPIO INPUT 0... .... ...T GGGP PPPP
* GPIO OUTPUT 1RRR ODDD SSL. GGGP PPPP
*/
/* Input/Output Selection:
*
* ENCODING I... .... .... .... ....
*/
#define GPIO_INPUT (0) /* Bit 19: 0=input */
#define GPIO_INPUT (1 << 19) /* Bit 19: 1=input */
/* Output Pull Up/Down:
*
* GPIO OUTPUT .RRR .... .... .... ....
*/
#define GPIO_PULL_SHIFT (16) /* Bits 16-18: Pull up/down selection */
#define GPIO_PULL_MASK (7 << GPIO_PULL_SHIFT)
# define GPIO_PULL_NONE (0 << GPIO_PULL_SHIFT) /* Pull/keeper disabled */
# define GPIO_PULL_KEEP (1 << GPIO_PULL_SHIFT) /* Output determined by keeper */
# define GPIO_PULL_UP_22K (2 << GPIO_PULL_SHIFT) /* Pull up with 22 KOhm resister */
# define GPIO_PULL_UP_47K (3 << GPIO_PULL_SHIFT) /* Pull up with 47 KOhm resister */
# define GPIO_PULL_UP_100K (4 << GPIO_PULL_SHIFT) /* Pull up with 100 KOhm resister */
# define GPIO_PULL_DOWN_100K (5 << GPIO_PULL_SHIFT) /* Pull down with 100 KOhm resister */
/* Open Drain Output:
*
* GPIO OUTPUT .... O... .... .... ....
*/
#define GPIO_CMOS_OUTPUT (1 << 15) /* Bit 15: 0=CMOS output */
#define GPIO_OPENDRAIN (1 << 15) /* Bit 15: 1=Enable open-drain output */
/* Output Drive Strength:
*
* GPIO OUTPUT .... .DDD .... .... ....
*/
#define GPIO_DRIVE_SHIFT (12) /* Bits 12-14: Output Drive Strength */
#define GPIO_DRIVE_MASK (7 << GPIO_DRIVE_SHIFT)
# define GPIO_DRIVE_HIZ (0 << GPIO_DRIVE_SHIFT) /* HI-Z */
# define GPIO_DRIVE_260OHM (1 << GPIO_DRIVE_SHIFT) /* 150 Ohm @3.3V, 260 Ohm @1.8V */
# define GPIO_DRIVE_130OHM (2 << GPIO_DRIVE_SHIFT) /* 75 Ohm @3.3V, 130 Ohm @1.8V */
# define GPIO_DRIVE_90OHM (3 << GPIO_DRIVE_SHIFT) /* 50 Ohm @3.3V, 90 Ohm @1.8V */
# define GPIO_DRIVE_60OHM (4 << GPIO_DRIVE_SHIFT) /* 37 Ohm @3.3V, 60 Ohm @1.8V */
# define GPIO_DRIVE_50OHM (5 << GPIO_DRIVE_SHIFT) /* 30 Ohm @3.3V, 50 Ohm @1.8V */
# define GPIO_DRIVE_40OHM (6 << GPIO_DRIVE_SHIFT) /* 25 Ohm @3.3V, 40 Ohm @1.8V */
# define GPIO_DRIVE_33OHM (7 << GPIO_DRIVE_SHIFT) /* 20 Ohm @3.3V, 33 Ohm @1.8V */
/* Output Speed:
*
* GPIO OUTPUT .... .... SS.. .... ....
*/
#define GPIO_SPEED_SHIFT (10) /* Bits 10-11: Speed */
#define GPIO_SPEED_MASK (3 << GPIO_SPEED_SHIFT)
# define GPIO_SPEED_LOW (0 << GPIO_SPEED_SHIFT) /* Low frequency (50 MHz) */
# define GPIO_SPEED_MEDIUM (1 << GPIO_SPEED_SHIFT) /* Medium frequency (100, 150 MHz) */
# define GPIO_SPEED_MAX (3 << GPIO_SPEED_SHIFT) /* Maximum frequency (100, 150, 200 MHz) */
/* Output Slew Rate:
*
* GPIO OUTPUT .... .... ..L. .... ....
*/
#define GPIO_SLEW_SLOW (0) /* Bit 9: 0=Slow Slew Rate */
#define GPIO_SLEW_FAST (1 << 9) /* Bit 9: 1=Fast Slew Rate */
/* Input Schmitt Trigger:
*
* GPIO INPUT 0... .... ...T .... ....
*/
#define GPIO_CMOS_INPUT (0) /* Bit 8: 0=CMOS input */
#define GPIO_SCHMITT_TRIGGER (1 << 8) /* Bit 8: 1=Enable Schmitt trigger if input */
/* GPIO Port Number
*
* ENCODING .... .... .... GGG. ....
*/
#define GPIO_PORT_SHIFT (5) /* Bits 5-7: Speed */
#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT)
# define GPIO_PORT1 (0 << GPIO_PORT_SHIFT) /* GPIO1 */
# define GPIO_PORT2 (1 << GPIO_PORT_SHIFT) /* GPIO2 */
# define GPIO_PORT3 (2 << GPIO_PORT_SHIFT) /* GPIO3 */
# define GPIO_PORT4 (3 << GPIO_PORT_SHIFT) /* GPIO4 */
# define GPIO_PORT5 (4 << GPIO_PORT_SHIFT) /* GPIO5 */
# define GPIO_PORT6 (5 << GPIO_PORT_SHIFT) /* GPIO6 */
# define GPIO_PORT7 (6 << GPIO_PORT_SHIFT) /* GPIO7 */
/* GPIO Pin Number:
*
* ENCODING .... .... .... ...P PPPP
*/
#define GPIO_PIN_SHIFT (5) /* Bits 0-4: Speed */
#define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT)
# define GPIO_PIN0 (0 << GPIO_PIN_SHIFT) /* Pin 0 */
# define GPIO_PIN1 (1 << GPIO_PIN_SHIFT) /* Pin 1 */
# define GPIO_PIN2 (2 << GPIO_PIN_SHIFT) /* Pin 2 */
# define GPIO_PIN3 (3 << GPIO_PIN_SHIFT) /* Pin 3 */
# define GPIO_PIN4 (4 << GPIO_PIN_SHIFT) /* Pin 4 */
# define GPIO_PIN5 (5 << GPIO_PIN_SHIFT) /* Pin 5 */
# define GPIO_PIN6 (6 << GPIO_PIN_SHIFT) /* Pin 6 */
# define GPIO_PIN7 (7 << GPIO_PIN_SHIFT) /* Pin 7 */
# define GPIO_PIN8 (8 << GPIO_PIN_SHIFT) /* Pin 8 */
# define GPIO_PIN9 (9 << GPIO_PIN_SHIFT) /* Pin 9 */
# define GPIO_PIN10 (10 << GPIO_PIN_SHIFT) /* Pin 10 */
# define GPIO_PIN11 (11 << GPIO_PIN_SHIFT) /* Pin 11 */
# define GPIO_PIN12 (12 << GPIO_PIN_SHIFT) /* Pin 12 */
# define GPIO_PIN13 (13 << GPIO_PIN_SHIFT) /* Pin 13 */
# define GPIO_PIN14 (14 << GPIO_PIN_SHIFT) /* Pin 14 */
# define GPIO_PIN15 (15 << GPIO_PIN_SHIFT) /* Pin 15 */
# define GPIO_PIN16 (16 << GPIO_PIN_SHIFT) /* Pin 16 */
# define GPIO_PIN17 (17 << GPIO_PIN_SHIFT) /* Pin 17 */
# define GPIO_PIN18 (18 << GPIO_PIN_SHIFT) /* Pin 18 */
# define GPIO_PIN19 (19 << GPIO_PIN_SHIFT) /* Pin 19 */
# define GPIO_PIN20 (20 << GPIO_PIN_SHIFT) /* Pin 20 */
# define GPIO_PIN21 (21 << GPIO_PIN_SHIFT) /* Pin 21 */
# define GPIO_PIN22 (22 << GPIO_PIN_SHIFT) /* Pin 22 */
# define GPIO_PIN23 (23 << GPIO_PIN_SHIFT) /* Pin 23 */
# define GPIO_PIN24 (24 << GPIO_PIN_SHIFT) /* Pin 24 */
# define GPIO_PIN25 (25 << GPIO_PIN_SHIFT) /* Pin 25 */
# define GPIO_PIN26 (26 << GPIO_PIN_SHIFT) /* Pin 26 */
# define GPIO_PIN27 (27 << GPIO_PIN_SHIFT) /* Pin 27 */
# define GPIO_PIN28 (28 << GPIO_PIN_SHIFT) /* Pin 28 */
# define GPIO_PIN29 (29 << GPIO_PIN_SHIFT) /* Pin 29 */
# define GPIO_PIN30 (30 << GPIO_PIN_SHIFT) /* Pin 30 */
# define GPIO_PIN31 (31 << GPIO_PIN_SHIFT) /* Pin 31 */
/************************************************************************************
* Public Types
************************************************************************************/
/* The smallest integer type that can hold the GPIO encoding */
typedef uint32_t gpio_pinset_t;
/************************************************************************************
* Inline Functions
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Public Data
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: imx_gpioirqinitialize
*
* Description:
* Initialize logic to support a second level of interrupt decoding for PIO pins.
*
************************************************************************************/
#ifdef CONFIG_IMX6_GPIO_IRQ
void imx_gpioirqinitialize(void);
#else
# define imx_gpioirqinitialize()
#endif
/************************************************************************************
* Name: imx_config_gpio
*
* Description:
* Configure a PIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
int imx_config_gpio(gpio_pinset_t cfgset);
/************************************************************************************
* Name: imx_gpio_write
*
* Description:
* Write one or zero to the selected PIO pin
*
************************************************************************************/
void imx_gpio_write(gpio_pinset_t pinset, bool value);
/************************************************************************************
* Name: imx_gpio_read
*
* Description:
* Read one or zero from the selected PIO pin
*
************************************************************************************/
bool imx_gpio_read(gpio_pinset_t pinset);
/************************************************************************************
* Name: imx_gpioirq
*
* Description:
* Configure an interrupt for the specified PIO pin.
*
************************************************************************************/
#ifdef CONFIG_IMX6_GPIO_IRQ
void imx_gpioirq(gpio_pinset_t pinset);
#else
# define imx_gpioirq(pinset)
#endif
/************************************************************************************
* Name: imx_gpioirq_enable
*
* Description:
* Enable the interrupt for specified PIO IRQ
*
************************************************************************************/
#ifdef CONFIG_IMX6_GPIO_IRQ
void imx_gpioirq_enable(int irq);
#else
# define imx_gpioirq_enable(irq)
#endif
/************************************************************************************
* Name: imx_gpioirq_disable
*
* Description:
* Disable the interrupt for specified PIO IRQ
*
************************************************************************************/
#ifdef CONFIG_IMX6_GPIO_IRQ
void imx_gpioirq_disable(int irq);
#else
# define imx_gpioirq_disable(irq)
#endif
/************************************************************************************
* Function: imx_dump_gpio
*
* Description:
* Dump all PIO registers associated with the base address of the provided pinset.
*
************************************************************************************/
#ifdef CONFIG_DEBUG_GPIO
int imx_dump_gpio(uint32_t pinset, const char *msg);
#else
# define imx_dumpgpio(p,m)
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ARCH_ARM_SRC_IMX6_IMX_GPIO_H */

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arch/arm/src/imx6/imx_memorymap.h
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@ -78,7 +78,7 @@
*/
#undef NEED_SDRAM_CONFIGURATION
#if defined(CONFIG_IMX_MMDC) && !defined(CONFIG_IMX_BOOT_SDRAM)
#if defined(CONFIG_IMX6_MMDC) && !defined(CONFIG_IMX_BOOT_SDRAM)
# define NEED_SDRAM_CONFIGURATION 1
#endif