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hardware-mapping.c
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/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* Copyright (C) 2013, 2016 Henner Zeller <[email protected]>
*
* 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 version 2.
*
* 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, see <http: *gnu.org/licenses/gpl-2.0.txt>
*/
/*
* We do this in plain C so that we can use designated initializers.
*/
#include "hardware-mapping.h"
#define GPIO_BIT(b) (1 << (b))
struct HardwareMapping matrix_hardware_mappings[] = {
/*
* The regular hardware mapping described in the wiring.md and used
* by the adapter PCBs.
*/
{
.name = "regular",
.output_enable = GPIO_BIT(18),
.clock = GPIO_BIT(17),
.strobe = GPIO_BIT(4),
/* Address lines */
.a = GPIO_BIT(22),
.b = GPIO_BIT(23),
.c = GPIO_BIT(24),
.d = GPIO_BIT(25),
.e = GPIO_BIT(15), /* RxD kept free unless 1:64 */
/* Parallel chain 0, RGB for both sub-panels */
.p0_r1 = GPIO_BIT(11), /* masks: SPI0_SCKL */
.p0_g1 = GPIO_BIT(27), /* Not on RPi1, Rev1; use "regular-pi1" instead */
.p0_b1 = GPIO_BIT(7), /* masks: SPI0_CE1 */
.p0_r2 = GPIO_BIT(8), /* masks: SPI0_CE0 */
.p0_g2 = GPIO_BIT(9), /* masks: SPI0_MISO */
.p0_b2 = GPIO_BIT(10), /* masks: SPI0_MOSI */
/* All the following are only available with 40 GPIP pins, on A+/B+/Pi2,3 */
/* Chain 1 */
.p1_r1 = GPIO_BIT(12),
.p1_g1 = GPIO_BIT(5),
.p1_b1 = GPIO_BIT(6),
.p1_r2 = GPIO_BIT(19),
.p1_g2 = GPIO_BIT(13),
.p1_b2 = GPIO_BIT(20),
/* Chain 2 */
.p2_r1 = GPIO_BIT(14), /* masks TxD when parallel=3 */
.p2_g1 = GPIO_BIT(2), /* masks SCL when parallel=3 */
.p2_b1 = GPIO_BIT(3), /* masks SDA when parallel=3 */
.p2_r2 = GPIO_BIT(26),
.p2_g2 = GPIO_BIT(16),
.p2_b2 = GPIO_BIT(21),
},
/*
* This is used if you have an Adafruit HAT in the default configuration
*/
{
.name = "adafruit-hat",
.output_enable = GPIO_BIT(4),
.clock = GPIO_BIT(17),
.strobe = GPIO_BIT(21),
.a = GPIO_BIT(22),
.b = GPIO_BIT(26),
.c = GPIO_BIT(27),
.d = GPIO_BIT(20),
.e = GPIO_BIT(24), /* Needs manual wiring, see README.md */
.p0_r1 = GPIO_BIT(5),
.p0_g1 = GPIO_BIT(13),
.p0_b1 = GPIO_BIT(6),
.p0_r2 = GPIO_BIT(12),
.p0_g2 = GPIO_BIT(16),
.p0_b2 = GPIO_BIT(23),
},
/*
* An Adafruit HAT with the PWM modification
*/
{
.name = "adafruit-hat-pwm",
.output_enable = GPIO_BIT(18), /* The only change compared to above */
.clock = GPIO_BIT(17),
.strobe = GPIO_BIT(21),
.a = GPIO_BIT(22),
.b = GPIO_BIT(26),
.c = GPIO_BIT(27),
.d = GPIO_BIT(20),
.e = GPIO_BIT(24),
.p0_r1 = GPIO_BIT(5),
.p0_g1 = GPIO_BIT(13),
.p0_b1 = GPIO_BIT(6),
.p0_r2 = GPIO_BIT(12),
.p0_g2 = GPIO_BIT(16),
.p0_b2 = GPIO_BIT(23),
},
/*
* The regular pin-out, but for Raspberry Pi1. The very first Pi1 Rev1 uses
* the same pin for GPIO-21 as later Pis use GPIO-27. Make it work for both.
*/
{
.name = "regular-pi1",
.output_enable = GPIO_BIT(18),
.clock = GPIO_BIT(17),
.strobe = GPIO_BIT(4),
/* Address lines */
.a = GPIO_BIT(22),
.b = GPIO_BIT(23),
.c = GPIO_BIT(24),
.d = GPIO_BIT(25),
.e = GPIO_BIT(15), /* RxD kept free unless 1:64 */
/* Parallel chain 0, RGB for both sub-panels */
.p0_r1 = GPIO_BIT(11), /* masks: SPI0_SCKL */
/* On Pi1 Rev1, the pin other Pis have GPIO27, these have GPIO21. So make
* this work for both Rev1 and Rev2.
*/
.p0_g1 = GPIO_BIT(21) | GPIO_BIT(27),
.p0_b1 = GPIO_BIT(7), /* masks: SPI0_CE1 */
.p0_r2 = GPIO_BIT(8), /* masks: SPI0_CE0 */
.p0_g2 = GPIO_BIT(9), /* masks: SPI0_MISO */
.p0_b2 = GPIO_BIT(10), /* masks: SPI0_MOSI */
/* No more chains - there are not enough GPIO */
},
/*
* Classic: Early forms of this library had this as default mapping, mostly
* derived from the 26 GPIO-header version so that it also can work
* on 40 Pin GPIO headers with more parallel chains.
* Not used anymore.
*/
{
.name = "classic",
.output_enable = GPIO_BIT(27), /* Not available on RPi1, Rev 1 */
.clock = GPIO_BIT(11),
.strobe = GPIO_BIT(4),
.a = GPIO_BIT(7),
.b = GPIO_BIT(8),
.c = GPIO_BIT(9),
.d = GPIO_BIT(10),
.p0_r1 = GPIO_BIT(17),
.p0_g1 = GPIO_BIT(18),
.p0_b1 = GPIO_BIT(22),
.p0_r2 = GPIO_BIT(23),
.p0_g2 = GPIO_BIT(24),
.p0_b2 = GPIO_BIT(25),
.p1_r1 = GPIO_BIT(12),
.p1_g1 = GPIO_BIT(5),
.p1_b1 = GPIO_BIT(6),
.p1_r2 = GPIO_BIT(19),
.p1_g2 = GPIO_BIT(13),
.p1_b2 = GPIO_BIT(20),
.p2_r1 = GPIO_BIT(14), /* masks TxD if parallel = 3 */
.p2_g1 = GPIO_BIT(2), /* masks SDA if parallel = 3 */
.p2_b1 = GPIO_BIT(3), /* masks SCL if parallel = 3 */
.p2_r2 = GPIO_BIT(15),
.p2_g2 = GPIO_BIT(26),
.p2_b2 = GPIO_BIT(21),
},
/*
* Classic pin-out for Rev-A Raspberry Pi.
*/
{
.name = "classic-pi1",
/* The Revision-1 and Revision-2 boards have different GPIO mappings
* on the P1-3 and P1-5. So we use both interpretations.
* To keep the I2C pins free, we avoid these in later mappings.
*/
.output_enable = GPIO_BIT(0) | GPIO_BIT(2),
.clock = GPIO_BIT(1) | GPIO_BIT(3),
.strobe = GPIO_BIT(4),
.a = GPIO_BIT(7),
.b = GPIO_BIT(8),
.c = GPIO_BIT(9),
.d = GPIO_BIT(10),
.p0_r1 = GPIO_BIT(17),
.p0_g1 = GPIO_BIT(18),
.p0_b1 = GPIO_BIT(22),
.p0_r2 = GPIO_BIT(23),
.p0_g2 = GPIO_BIT(24),
.p0_b2 = GPIO_BIT(25),
},
{
.name = "matrix_3d",
.output_enable = GPIO_BIT(18),
.clock = GPIO_BIT(17),
.strobe = GPIO_BIT(4),
/* Address lines */
.a = GPIO_BIT(22),
.b = GPIO_BIT(23),
.c = GPIO_BIT(24),
.d = GPIO_BIT(25),
.e = GPIO_BIT(15), /* RxD kept free unless 1:64 */
/* Parallel chain 0, RGB for both sub-panels */
.p0_r1 = GPIO_BIT(11), /* masks: SPI0_SCKL */
.p0_g1 = GPIO_BIT(27), /* Not on RPi1, Rev1; use "regular-pi1" instead */
.p0_b1 = GPIO_BIT(7), /* masks: SPI0_CE1 */
.p0_r2 = GPIO_BIT(8), /* masks: SPI0_CE0 */
.p0_g2 = GPIO_BIT(9), /* masks: SPI0_MISO */
.p0_b2 = GPIO_BIT(10), /* masks: SPI0_MOSI */
/* All the following are only available with 40 GPIP pins, on A+/B+/Pi2,3 */
/* Chain 1 */
.p1_r1 = GPIO_BIT(12),
.p1_g1 = GPIO_BIT(5),
.p1_b1 = GPIO_BIT(6),
.p1_r2 = GPIO_BIT(26),
.p1_g2 = GPIO_BIT(13),
.p1_b2 = GPIO_BIT(25),
/* Chain 2 */
.p2_r1 = GPIO_BIT(14), /* masks TxD when parallel=3 */
.p2_g1 = GPIO_BIT(2), /* masks SCL when parallel=3 */
.p2_b1 = GPIO_BIT(3), /* masks SDA when parallel=3 */
.p2_r2 = GPIO_BIT(19),
.p2_g2 = GPIO_BIT(16),
.p2_b2 = GPIO_BIT(21),
},
{0}};