i.MX6: Add high-level GPIO header file
This commit is contained in:
Gregory Nutt
parent
910e649616
commit
88f0d35bce
@ -139,7 +139,7 @@
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#define GPIO_PIN(n) (1 << (n)) /* Bit n: Pin n, n=0-31 */
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/* GPIO interrupt configuration register1/2 */
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/* GPIO interrupt configuration register 1/2 */
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#define GPIO_ICR_INDEX(n) (((n) >> 4) & 1)
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#define GPIO_ICR_OFFSET(n) (GPIO_ICR1_OFFSET + (GPIO_ICR_INDEX(n) << 2))
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@ -153,4 +153,4 @@
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#define GPIO_ICR_MASK(n) (3 << GPIO_ICR_SHIFT(n))
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#define GPIO_ICR(i,n) ((uint32_t)(n) << GPIO_ICR_SHIFT(n))
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#endif /* __ARCH_ARM_SRC_IMX6_CHIP_IMX_GPIO_H */
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#endif /* __ARCH_ARM_SRC_IMX6_CHIP_IMX_GPIO_H */
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320
arch/arm/src/imx6/imx_gpio.h
Normal file
320
arch/arm/src/imx6/imx_gpio.h
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@ -0,0 +1,320 @@
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/************************************************************************************
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* arch/arm/src/imx6/imx_gpio.h
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_IMX6_IMX_GPIO_H
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#define __ARCH_ARM_SRC_IMX6_IMX_GPIO_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <chip/imx_gpio.h>
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Encoding:
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*
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* ENCODING IRRR ODDD SSLT GGGP PPPP
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* GPIO INPUT 0... .... ...T GGGP PPPP
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* GPIO OUTPUT 1RRR ODDD SSL. GGGP PPPP
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*/
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/* Input/Output Selection:
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*
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* ENCODING I... .... .... .... ....
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*/
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#define GPIO_INPUT (0) /* Bit 19: 0=input */
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#define GPIO_INPUT (1 << 19) /* Bit 19: 1=input */
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/* Output Pull Up/Down:
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*
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* GPIO OUTPUT .RRR .... .... .... ....
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*/
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#define GPIO_PULL_SHIFT (16) /* Bits 16-18: Pull up/down selection */
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#define GPIO_PULL_MASK (7 << GPIO_PULL_SHIFT)
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# define GPIO_PULL_NONE (0 << GPIO_PULL_SHIFT) /* Pull/keeper disabled */
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# define GPIO_PULL_KEEP (1 << GPIO_PULL_SHIFT) /* Output determined by keeper */
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# define GPIO_PULL_UP_22K (2 << GPIO_PULL_SHIFT) /* Pull up with 22 KOhm resister */
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# define GPIO_PULL_UP_47K (3 << GPIO_PULL_SHIFT) /* Pull up with 47 KOhm resister */
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# define GPIO_PULL_UP_100K (4 << GPIO_PULL_SHIFT) /* Pull up with 100 KOhm resister */
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# define GPIO_PULL_DOWN_100K (5 << GPIO_PULL_SHIFT) /* Pull down with 100 KOhm resister */
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/* Open Drain Output:
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*
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* GPIO OUTPUT .... O... .... .... ....
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*/
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#define GPIO_CMOS_OUTPUT (1 << 15) /* Bit 15: 0=CMOS output */
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#define GPIO_OPENDRAIN (1 << 15) /* Bit 15: 1=Enable open-drain output */
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/* Output Drive Strength:
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*
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* GPIO OUTPUT .... .DDD .... .... ....
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*/
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#define GPIO_DRIVE_SHIFT (12) /* Bits 12-14: Output Drive Strength */
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#define GPIO_DRIVE_MASK (7 << GPIO_DRIVE_SHIFT)
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# define GPIO_DRIVE_HIZ (0 << GPIO_DRIVE_SHIFT) /* HI-Z */
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# define GPIO_DRIVE_260OHM (1 << GPIO_DRIVE_SHIFT) /* 150 Ohm @3.3V, 260 Ohm @1.8V */
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# define GPIO_DRIVE_130OHM (2 << GPIO_DRIVE_SHIFT) /* 75 Ohm @3.3V, 130 Ohm @1.8V */
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# define GPIO_DRIVE_90OHM (3 << GPIO_DRIVE_SHIFT) /* 50 Ohm @3.3V, 90 Ohm @1.8V */
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# define GPIO_DRIVE_60OHM (4 << GPIO_DRIVE_SHIFT) /* 37 Ohm @3.3V, 60 Ohm @1.8V */
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# define GPIO_DRIVE_50OHM (5 << GPIO_DRIVE_SHIFT) /* 30 Ohm @3.3V, 50 Ohm @1.8V */
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# define GPIO_DRIVE_40OHM (6 << GPIO_DRIVE_SHIFT) /* 25 Ohm @3.3V, 40 Ohm @1.8V */
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# define GPIO_DRIVE_33OHM (7 << GPIO_DRIVE_SHIFT) /* 20 Ohm @3.3V, 33 Ohm @1.8V */
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/* Output Speed:
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*
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* GPIO OUTPUT .... .... SS.. .... ....
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*/
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#define GPIO_SPEED_SHIFT (10) /* Bits 10-11: Speed */
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#define GPIO_SPEED_MASK (3 << GPIO_SPEED_SHIFT)
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# define GPIO_SPEED_LOW (0 << GPIO_SPEED_SHIFT) /* Low frequency (50 MHz) */
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# define GPIO_SPEED_MEDIUM (1 << GPIO_SPEED_SHIFT) /* Medium frequency (100, 150 MHz) */
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# define GPIO_SPEED_MAX (3 << GPIO_SPEED_SHIFT) /* Maximum frequency (100, 150, 200 MHz) */
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/* Output Slew Rate:
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*
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* GPIO OUTPUT .... .... ..L. .... ....
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*/
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#define GPIO_SLEW_SLOW (0) /* Bit 9: 0=Slow Slew Rate */
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#define GPIO_SLEW_FAST (1 << 9) /* Bit 9: 1=Fast Slew Rate */
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/* Input Schmitt Trigger:
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*
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* GPIO INPUT 0... .... ...T .... ....
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*/
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#define GPIO_CMOS_INPUT (0) /* Bit 8: 0=CMOS input */
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#define GPIO_SCHMITT_TRIGGER (1 << 8) /* Bit 8: 1=Enable Schmitt trigger if input */
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/* GPIO Port Number
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*
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* ENCODING .... .... .... GGG. ....
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*/
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#define GPIO_PORT_SHIFT (5) /* Bits 5-7: Speed */
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#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT)
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# define GPIO_PORT1 (0 << GPIO_PORT_SHIFT) /* GPIO1 */
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# define GPIO_PORT2 (1 << GPIO_PORT_SHIFT) /* GPIO2 */
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# define GPIO_PORT3 (2 << GPIO_PORT_SHIFT) /* GPIO3 */
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# define GPIO_PORT4 (3 << GPIO_PORT_SHIFT) /* GPIO4 */
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# define GPIO_PORT5 (4 << GPIO_PORT_SHIFT) /* GPIO5 */
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# define GPIO_PORT6 (5 << GPIO_PORT_SHIFT) /* GPIO6 */
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# define GPIO_PORT7 (6 << GPIO_PORT_SHIFT) /* GPIO7 */
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/* GPIO Pin Number:
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*
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* ENCODING .... .... .... ...P PPPP
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*/
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#define GPIO_PIN_SHIFT (5) /* Bits 0-4: Speed */
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#define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT)
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# define GPIO_PIN0 (0 << GPIO_PIN_SHIFT) /* Pin 0 */
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# define GPIO_PIN1 (1 << GPIO_PIN_SHIFT) /* Pin 1 */
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# define GPIO_PIN2 (2 << GPIO_PIN_SHIFT) /* Pin 2 */
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# define GPIO_PIN3 (3 << GPIO_PIN_SHIFT) /* Pin 3 */
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# define GPIO_PIN4 (4 << GPIO_PIN_SHIFT) /* Pin 4 */
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# define GPIO_PIN5 (5 << GPIO_PIN_SHIFT) /* Pin 5 */
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# define GPIO_PIN6 (6 << GPIO_PIN_SHIFT) /* Pin 6 */
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# define GPIO_PIN7 (7 << GPIO_PIN_SHIFT) /* Pin 7 */
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# define GPIO_PIN8 (8 << GPIO_PIN_SHIFT) /* Pin 8 */
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# define GPIO_PIN9 (9 << GPIO_PIN_SHIFT) /* Pin 9 */
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# define GPIO_PIN10 (10 << GPIO_PIN_SHIFT) /* Pin 10 */
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# define GPIO_PIN11 (11 << GPIO_PIN_SHIFT) /* Pin 11 */
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# define GPIO_PIN12 (12 << GPIO_PIN_SHIFT) /* Pin 12 */
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# define GPIO_PIN13 (13 << GPIO_PIN_SHIFT) /* Pin 13 */
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# define GPIO_PIN14 (14 << GPIO_PIN_SHIFT) /* Pin 14 */
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# define GPIO_PIN15 (15 << GPIO_PIN_SHIFT) /* Pin 15 */
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# define GPIO_PIN16 (16 << GPIO_PIN_SHIFT) /* Pin 16 */
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# define GPIO_PIN17 (17 << GPIO_PIN_SHIFT) /* Pin 17 */
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# define GPIO_PIN18 (18 << GPIO_PIN_SHIFT) /* Pin 18 */
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# define GPIO_PIN19 (19 << GPIO_PIN_SHIFT) /* Pin 19 */
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# define GPIO_PIN20 (20 << GPIO_PIN_SHIFT) /* Pin 20 */
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# define GPIO_PIN21 (21 << GPIO_PIN_SHIFT) /* Pin 21 */
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# define GPIO_PIN22 (22 << GPIO_PIN_SHIFT) /* Pin 22 */
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# define GPIO_PIN23 (23 << GPIO_PIN_SHIFT) /* Pin 23 */
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# define GPIO_PIN24 (24 << GPIO_PIN_SHIFT) /* Pin 24 */
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# define GPIO_PIN25 (25 << GPIO_PIN_SHIFT) /* Pin 25 */
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# define GPIO_PIN26 (26 << GPIO_PIN_SHIFT) /* Pin 26 */
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# define GPIO_PIN27 (27 << GPIO_PIN_SHIFT) /* Pin 27 */
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# define GPIO_PIN28 (28 << GPIO_PIN_SHIFT) /* Pin 28 */
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# define GPIO_PIN29 (29 << GPIO_PIN_SHIFT) /* Pin 29 */
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# define GPIO_PIN30 (30 << GPIO_PIN_SHIFT) /* Pin 30 */
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# define GPIO_PIN31 (31 << GPIO_PIN_SHIFT) /* Pin 31 */
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/* The smallest integer type that can hold the GPIO encoding */
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typedef uint32_t gpio_pinset_t;
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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* Name: imx_gpioirqinitialize
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*
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* Description:
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* Initialize logic to support a second level of interrupt decoding for PIO pins.
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*
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************************************************************************************/
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#ifdef CONFIG_IMX6_GPIO_IRQ
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void imx_gpioirqinitialize(void);
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#else
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# define imx_gpioirqinitialize()
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#endif
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/************************************************************************************
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* Name: imx_config_gpio
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*
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* Description:
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* Configure a PIO pin based on bit-encoded description of the pin.
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*
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************************************************************************************/
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int imx_config_gpio(gpio_pinset_t cfgset);
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/************************************************************************************
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* Name: imx_gpio_write
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*
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* Description:
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* Write one or zero to the selected PIO pin
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*
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************************************************************************************/
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void imx_gpio_write(gpio_pinset_t pinset, bool value);
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/************************************************************************************
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* Name: imx_gpio_read
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*
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* Description:
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* Read one or zero from the selected PIO pin
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*
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************************************************************************************/
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bool imx_gpio_read(gpio_pinset_t pinset);
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/************************************************************************************
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* Name: imx_gpioirq
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*
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* Description:
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* Configure an interrupt for the specified PIO pin.
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*
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************************************************************************************/
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#ifdef CONFIG_IMX6_GPIO_IRQ
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void imx_gpioirq(gpio_pinset_t pinset);
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#else
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# define imx_gpioirq(pinset)
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#endif
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/************************************************************************************
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* Name: imx_gpioirq_enable
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*
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* Description:
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* Enable the interrupt for specified PIO IRQ
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*
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************************************************************************************/
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#ifdef CONFIG_IMX6_GPIO_IRQ
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void imx_gpioirq_enable(int irq);
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#else
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# define imx_gpioirq_enable(irq)
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#endif
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/************************************************************************************
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* Name: imx_gpioirq_disable
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*
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* Description:
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* Disable the interrupt for specified PIO IRQ
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*
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************************************************************************************/
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#ifdef CONFIG_IMX6_GPIO_IRQ
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void imx_gpioirq_disable(int irq);
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#else
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# define imx_gpioirq_disable(irq)
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#endif
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/************************************************************************************
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* Function: imx_dump_gpio
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*
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* Description:
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* Dump all PIO registers associated with the base address of the provided pinset.
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*
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************************************************************************************/
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#ifdef CONFIG_DEBUG_GPIO
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int imx_dump_gpio(uint32_t pinset, const char *msg);
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#else
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# define imx_dumpgpio(p,m)
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ARCH_ARM_SRC_IMX6_IMX_GPIO_H */
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@ -78,7 +78,7 @@
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*/
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#undef NEED_SDRAM_CONFIGURATION
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#if defined(CONFIG_IMX_MMDC) && !defined(CONFIG_IMX_BOOT_SDRAM)
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#if defined(CONFIG_IMX6_MMDC) && !defined(CONFIG_IMX_BOOT_SDRAM)
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# define NEED_SDRAM_CONFIGURATION 1
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#endif
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