/* * Author: Srinivas Kandagatla * Copyright (c) 2014 Intel Corporation. * Copyright (c) 2015 Linaro Limited. * * Copied from src/arm/banana.c * * 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 #include #include #include #include #include "arm/96boards.h" #include "common.h" #define DT_BASE "/proc/device-tree" #define PLATFORM_NAME_DB410C "DB410C" #define PLATFORM_NAME_HIKEY "HIKEY" #define PLATFORM_NAME_BBGUM "BBGUM" #define MAX_SIZE 64 #define MMAP_PATH "/dev/mem" #define DB410C_MMAP_REG 0x01000000 int db410c_ls_gpio_pins[MRAA_96BOARDS_LS_GPIO_COUNT] = { 36, 12, 13, 69, 115, 4, 24, 25, 35, 34, 28, 33, }; const char* db410c_serialdev[MRAA_96BOARDS_LS_UART_COUNT] = { "/dev/ttyMSM0", "/dev/ttyMSM1" }; int hikey_ls_gpio_pins[MRAA_96BOARDS_LS_GPIO_COUNT] = { 488, 489, 490, 491, 492, 415, 463, 495, 426, 433, 427, 434, }; const char* hikey_serialdev[MRAA_96BOARDS_LS_UART_COUNT] = { "/dev/ttyAMA2", "/dev/ttyAMA3" }; int bbgum_ls_gpio_pins[MRAA_96BOARDS_LS_GPIO_COUNT] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 155, 154 }; const char* bbgum_serialdev[MRAA_96BOARDS_LS_UART_COUNT] = { "/dev/ttyS3", "/dev/ttyS5" }; // MMAP static uint8_t* mmap_reg = NULL; static int mmap_fd = 0; static int mmap_size = 0x00120004; static unsigned int mmap_count = 0; void mraa_96boards_pininfo(mraa_board_t* board, int index, int sysfs_pin, char* fmt, ...) { va_list arg_ptr; if (index > board->phy_pin_count) return; mraa_pininfo_t* pininfo = &board->pins[index]; va_start(arg_ptr, fmt); vsnprintf(pininfo->name, MRAA_PIN_NAME_SIZE, fmt, arg_ptr); va_end(arg_ptr); if (sysfs_pin >= 0) pininfo->capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }; else pininfo->capabilities = (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }; pininfo->gpio.pinmap = sysfs_pin; pininfo->gpio.mux_total = 0; } static mraa_result_t mraa_db410c_mmap_unsetup() { if (mmap_reg == NULL) { syslog(LOG_WARNING, "db410c mmap: null register nothing to unsetup"); return MRAA_ERROR_INVALID_RESOURCE; } munmap(mmap_reg, mmap_size); mmap_reg = NULL; close(mmap_fd); return MRAA_SUCCESS; } mraa_result_t mraa_db410c_mmap_write(mraa_gpio_context dev, int value) { uint32_t offset = (0x1000 * dev->pin); if (value) { *(volatile uint32_t*) (mmap_reg + offset + 0x04) |= (uint32_t) (1 << 1); } else { *(volatile uint32_t*) (mmap_reg + offset + 0x04) &= ~(uint32_t) (1 << 1); } return MRAA_SUCCESS; } int mraa_db410c_mmap_read(mraa_gpio_context dev) { uint32_t value; uint32_t offset = (0x1000 * dev->pin); value = *(volatile uint32_t*) (mmap_reg + offset + 0x04); if (value & (uint32_t) (1 << 0)) { return 1; } return 0; } mraa_result_t mraa_db410c_mmap_setup(mraa_gpio_context dev, mraa_boolean_t en) { if (dev == NULL) { syslog(LOG_ERR, "db410c mmap: context not valid"); return MRAA_ERROR_INVALID_HANDLE; } /* disable mmap if already enabled */ if (en == 0) { if (dev->mmap_write == NULL && dev->mmap_read == NULL) { syslog(LOG_ERR, "db410c mmap: can't disable disabled mmap gpio"); return MRAA_ERROR_INVALID_PARAMETER; } dev->mmap_write = NULL; dev->mmap_read = NULL; mmap_count--; if (mmap_count == 0) { return mraa_db410c_mmap_unsetup(); } return MRAA_SUCCESS; } if (dev->mmap_write != NULL && dev->mmap_read != NULL) { syslog(LOG_ERR, "db410c mmap: can't enable enabled mmap gpio"); return MRAA_ERROR_INVALID_PARAMETER; } if (mmap_reg == NULL) { if ((mmap_fd = open(MMAP_PATH, O_RDWR)) < 0) { syslog(LOG_ERR, "db410c mmap: unable to open /dev/mem"); return MRAA_ERROR_INVALID_HANDLE; } mmap_reg = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, mmap_fd, DB410C_MMAP_REG); if (mmap_reg == MAP_FAILED) { syslog(LOG_ERR, "db410c mmap: failed to mmap"); mmap_reg = NULL; close(mmap_fd); return MRAA_ERROR_NO_RESOURCES; } } dev->mmap_write = &mraa_db410c_mmap_write; dev->mmap_read = &mraa_db410c_mmap_read; mmap_count++; return MRAA_SUCCESS; } mraa_board_t* mraa_96boards() { int i; int* ls_gpio_pins = NULL; mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t)); if (b == NULL) { return NULL; } b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t)); if (b->adv_func == NULL) { free(b); return NULL; } // pin mux for buses are setup by default by kernel so tell mraa to ignore them b->no_bus_mux = 1; b->phy_pin_count = MRAA_96BOARDS_LS_PIN_COUNT + 1; if (mraa_file_exist(DT_BASE "/model")) { // We are on a modern kernel, great!!!! if (mraa_file_contains(DT_BASE "/model", "Qualcomm Technologies, Inc. APQ 8016 SBC")) { b->platform_name = PLATFORM_NAME_DB410C; ls_gpio_pins = db410c_ls_gpio_pins; b->uart_dev[0].device_path = (char *)db410c_serialdev[0]; b->uart_dev[1].device_path = (char *)db410c_serialdev[1]; b->adv_func->gpio_mmap_setup = &mraa_db410c_mmap_setup; } else if (mraa_file_contains(DT_BASE "/model", "HiKey Development Board")) { b->platform_name = PLATFORM_NAME_HIKEY; ls_gpio_pins = hikey_ls_gpio_pins; b->uart_dev[0].device_path = (char *)hikey_serialdev[0]; b->uart_dev[1].device_path = (char *)hikey_serialdev[1]; } else if (mraa_file_contains(DT_BASE "/model", "s900")) { b->platform_name = PLATFORM_NAME_BBGUM; ls_gpio_pins = bbgum_ls_gpio_pins; b->uart_dev[0].device_path = (char *)bbgum_serialdev[0]; b->uart_dev[1].device_path = (char *)bbgum_serialdev[1]; } } // UART b->uart_dev_count = MRAA_96BOARDS_LS_UART_COUNT; b->def_uart_dev = 0; // I2C if (strncmp(b->platform_name, PLATFORM_NAME_BBGUM, MAX_SIZE) == 0) { b->i2c_bus_count = MRAA_96BOARDS_LS_I2C_COUNT; b->def_i2c_bus = 0; b->i2c_bus[0].bus_id = 1; b->i2c_bus[1].bus_id = 2; } else { b->i2c_bus_count = MRAA_96BOARDS_LS_I2C_COUNT; b->def_i2c_bus = 0; b->i2c_bus[0].bus_id = 0; b->i2c_bus[1].bus_id = 1; } // SPI b->spi_bus_count = MRAA_96BOARDS_LS_SPI_COUNT; b->spi_bus[0].bus_id = 0; b->def_spi_bus = 0; b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * b->phy_pin_count); if (b->pins == NULL) { free(b->adv_func); free(b); return NULL; } mraa_96boards_pininfo(b, 0, -1, "INVALID"); mraa_96boards_pininfo(b, 1, -1, "GND"); mraa_96boards_pininfo(b, 2, -1, "GND"); mraa_96boards_pininfo(b, 3, -1, "UART0_CTS"); mraa_96boards_pininfo(b, 4, -1, "PWR_BTN_N"); mraa_96boards_pininfo(b, 5, -1, "UART0_TXD"); mraa_96boards_pininfo(b, 6, -1, "RST_BTN_N"); mraa_96boards_pininfo(b, 7, -1, "UART0_RXD"); mraa_96boards_pininfo(b, 8, -1, "SPI0_SCLK"); mraa_96boards_pininfo(b, 9, -1, "UART0_RTS"); mraa_96boards_pininfo(b, 10, -1, "SPI0_DIN"); mraa_96boards_pininfo(b, 11, -1, "UART1_TXD"); mraa_96boards_pininfo(b, 12, -1, "SPI0_CS"); mraa_96boards_pininfo(b, 13, -1, "UART1_RXD"); mraa_96boards_pininfo(b, 14, -1, "SPI0_DOUT"); mraa_96boards_pininfo(b, 15, -1, "I2C0_SCL"); mraa_96boards_pininfo(b, 16, -1, "PCM_FS"); mraa_96boards_pininfo(b, 17, -1, "I2C0_SDA"); mraa_96boards_pininfo(b, 18, -1, "PCM_CLK"); mraa_96boards_pininfo(b, 19, -1, "I2C1_SCL"); mraa_96boards_pininfo(b, 20, -1, "PCM_DO"); mraa_96boards_pininfo(b, 21, -1, "I2C1_SDA"); mraa_96boards_pininfo(b, 22, -1, "PCM_DI"); // GPIOs are labelled "GPIO-A" through "GPIO-L" for (i = 0; i < MRAA_96BOARDS_LS_GPIO_COUNT; i++) { mraa_96boards_pininfo(b, 23 + i, ls_gpio_pins ? ls_gpio_pins[i] : -1, "GPIO-%c", 'A' + i); } mraa_96boards_pininfo(b, 35, -1, "1.8v"); mraa_96boards_pininfo(b, 36, -1, "SYS_DCIN"); mraa_96boards_pininfo(b, 37, -1, "5v"); mraa_96boards_pininfo(b, 38, -1, "SYS_DCIN"); mraa_96boards_pininfo(b, 39, -1, "GND"); mraa_96boards_pininfo(b, 40, -1, "GND"); b->gpio_count = MRAA_96BOARDS_LS_GPIO_COUNT; b->aio_count = 0; b->adc_raw = 0; b->adc_supported = 0; return b; }