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6c85b61daa4b505568694d7568e223cedafcc522
mraa/src/x86/up.c
Brendan Le Foll 6c85b61daa mraa: Fix compiler warnings unused vars and useless statements 
Should have 0 functionality effect, just cleans up a few things. Fixes #577

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
2016-09-13 11:20:41 +01:00

215 lines
9.2 KiB
C
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/*
* Author: Dan O'Donovan <dan@emutex.com>
* Copyright (c) 2015 Emutex Ltd.
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/utsname.h>
#include <ctype.h>
#include "common.h"
#include "x86/up.h"
#define PLATFORM_NAME "UP"
#define I2C_BUS_DEFAULT 1
#define MAX_LENGTH 8
#define I2CNAME "designware"
static mraa_result_t
set_pininfo(mraa_board_t* board, int mraa_index, char* name, mraa_pincapabilities_t caps, int sysfs_pin)
{
if (mraa_index < board->phy_pin_count) {
mraa_pininfo_t* pin_info = &board->pins[mraa_index];
strncpy(pin_info->name, name, MAX_LENGTH);
pin_info->capabilities = caps;
if (caps.gpio) {
pin_info->gpio.pinmap = sysfs_pin;
pin_info->gpio.mux_total = 0;
}
if (caps.i2c) {
pin_info->i2c.pinmap = 1;
pin_info->i2c.mux_total = 0;
}
if (caps.pwm) {
int controller = 0;
if (strncmp(name, "PWM", 3) == 0 && strlen(name) > 3 && isdigit(name[3]))
controller = name[3] - '0';
pin_info->pwm.parent_id = controller;
pin_info->pwm.pinmap = 0;
pin_info->pwm.mux_total = 0;
}
if (caps.spi) {
pin_info->spi.mux_total = 0;
}
return MRAA_SUCCESS;
}
return MRAA_ERROR_INVALID_RESOURCE;
}
static mraa_result_t
get_pin_index(mraa_board_t* board, char* name, int* pin_index)
{
int i;
for (i = 0; i < board->phy_pin_count; ++i) {
if (strncmp(name, board->pins[i].name, MAX_LENGTH) == 0) {
*pin_index = i;
return MRAA_SUCCESS;
}
}
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_board_t*
mraa_up_board()
{
mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
struct utsname running_uname;
int uname_major, uname_minor;
if (b == NULL) {
return NULL;
}
b->platform_name = PLATFORM_NAME;
b->phy_pin_count = MRAA_UP_PINCOUNT;
b->gpio_count = MRAA_UP_GPIOCOUNT;
b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * MRAA_UP_PINCOUNT);
if (b->pins == NULL) {
goto error;
}
b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
if (b->adv_func == NULL) {
free(b->pins);
goto error;
}
if (uname(&running_uname) != 0) {
free(b->pins);
free(b->adv_func);
goto error;
}
sscanf(running_uname.release, "%d.%d", &uname_major, &uname_minor);
set_pininfo(b, 0, "INVALID", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 1, "3.3v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 2, "5v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 3, "I2C1_SDA", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 2);
set_pininfo(b, 4, "5v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 5, "I2C1_SCL", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 3);
set_pininfo(b, 6, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 7, "GPIO4", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 4);
set_pininfo(b, 8, "UART1_TX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 14);
set_pininfo(b, 9, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 10, "UART1_RX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 15);
set_pininfo(b, 11, "GPIO17", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 17);
set_pininfo(b, 12, "I2S_CLK", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 18);
set_pininfo(b, 13, "UART2_RX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 1 }, 27);
set_pininfo(b, 14, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 15, "GPIO22", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 22);
set_pininfo(b, 16, "GPIO23", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 23);
set_pininfo(b, 17, "3.3v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 18, "GPIO24", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 24);
set_pininfo(b, 19, "SPI_MOSI", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 10);
set_pininfo(b, 20, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 21, "SPI_MISO", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 9);
set_pininfo(b, 22, "UART2_TX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 25);
set_pininfo(b, 23, "SPI_CLK", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 11);
set_pininfo(b, 24, "SPI_CS0", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 8);
set_pininfo(b, 25, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 26, "SPI_CS1", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 7);
set_pininfo(b, 27, "ID_SD", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 0);
set_pininfo(b, 28, "ID_SC", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 1);
set_pininfo(b, 29, "GPIO5", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 5);
set_pininfo(b, 30, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 31, "GPIO6", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 6);
set_pininfo(b, 32, "PWM0", (mraa_pincapabilities_t){ 1, 1, 1, 0, 0, 0, 0, 0 }, 12);
set_pininfo(b, 33, "PWM1", (mraa_pincapabilities_t){ 1, 1, 1, 0, 0, 0, 0, 0 }, 13);
set_pininfo(b, 34, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 35, "I2S_FRM", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 19);
set_pininfo(b, 36, "GPIO16", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 16);
set_pininfo(b, 37, "GPIO26", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 26);
set_pininfo(b, 38, "I2S_DIN", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 20);
set_pininfo(b, 39, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1);
set_pininfo(b, 40, "I2S_DOUT", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 21);
// Set number of i2c adaptors usable from userspace
b->i2c_bus_count = 2;
// Configure i2c adaptor #0 (default)
// (For consistency with Raspberry Pi 2, use I2C1 as our primary I2C bus)
b->i2c_bus[0].bus_id = 1;
get_pin_index(b, "I2C1_SDA", (int*) &(b->i2c_bus[0].sda));
get_pin_index(b, "I2C1_SCL", (int*) &(b->i2c_bus[0].scl));
// Configure i2c adaptor #1
// (normally reserved for accessing HAT EEPROM)
b->i2c_bus[1].bus_id = 0;
get_pin_index(b, "I2C0_SDA", (int*) &(b->i2c_bus[1].sda));
get_pin_index(b, "I2C0_SCL", (int*) &(b->i2c_bus[1].scl));
b->def_i2c_bus = 0;
// Configure PWM
b->pwm_default_period = 500;
b->pwm_max_period = 3413;
b->pwm_min_period = 1;
// Configure SPI #0 CS0 (default)
b->spi_bus_count = 2;
b->spi_bus[0].bus_id = 2;
b->spi_bus[0].slave_s = 0;
get_pin_index(b, "SPI_CS0", (int*) &(b->spi_bus[0].cs));
get_pin_index(b, "SPI_MOSI", (int*) &(b->spi_bus[0].mosi));
get_pin_index(b, "SPI_MISO", (int*) &(b->spi_bus[0].miso));
get_pin_index(b, "SPI_CLK", (int*) &(b->spi_bus[0].sclk));
b->def_spi_bus = 0;
// Configure SPI #0 CS1
b->spi_bus[1].bus_id = 2;
b->spi_bus[1].slave_s = 1;
get_pin_index(b, "SPI_CS1", (int*) &(b->spi_bus[1].cs));
get_pin_index(b, "SPI_MOSI", (int*) &(b->spi_bus[1].mosi));
get_pin_index(b, "SPI_MISO", (int*) &(b->spi_bus[1].miso));
get_pin_index(b, "SPI_CLK", (int*) &(b->spi_bus[1].sclk));
// Configure UART #1 (default)
b->uart_dev_count = 2;
get_pin_index(b, "UART1_RX", &(b->uart_dev[0].rx));
get_pin_index(b, "UART1_TX", &(b->uart_dev[0].tx));
b->uart_dev[0].device_path = "/dev/ttyS1";
b->def_uart_dev = 0;
// Configure UART #2
get_pin_index(b, "UART2_RX", &(b->uart_dev[1].rx));
get_pin_index(b, "UART2_TX", &(b->uart_dev[1].tx));
b->uart_dev[1].device_path = "/dev/ttyS2";
return b;
error:
syslog(LOG_CRIT, "up: Platform failed to initialise");
free(b);
return NULL;
}
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