diff options
Diffstat (limited to 'io-module/mts-io.c')
| -rw-r--r-- | io-module/mts-io.c | 1256 |
1 files changed, 1256 insertions, 0 deletions
diff --git a/io-module/mts-io.c b/io-module/mts-io.c new file mode 100644 index 0000000..e51bd4b --- /dev/null +++ b/io-module/mts-io.c @@ -0,0 +1,1256 @@ +/* + * MTS-IO Controller + * + * Copyright (C) 2014 by Multi-Tech Systems + * Copyright (C) 2016 by Multi-Tech Systems + * + * Authors: James Maki <jmaki@multitech.com> + * Jesse Gilles <jgilles@multitech.com> + * Mike Fiore <mfiore@multitech.com> + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/ioctl.h> +#include <linux/input.h> +#include <linux/cdev.h> +#include <linux/clk.h> +#include <linux/sched.h> +#include <linux/reboot.h> +#include <linux/uaccess.h> +#include <linux/gpio.h> +#include <linux/sched.h> +#include <linux/workqueue.h> +#include <linux/platform_device.h> +#include <linux/device.h> +#include <linux/bitops.h> +#include <linux/spi/spi.h> +#include <linux/i2c/at24.h> +#include <linux/kmod.h> +#include <linux/ctype.h> +#include <linux/io.h> +#include <linux/module.h> + +#include "mts_io.h" +#include "buttons.h" + +#define PLATFORM_NAME "mts-io" + +#define LED_LS_CONTROLLABLE 0 + +/* on-board EEPROM */ +extern uint8_t mts_id_eeprom[512]; +static struct mts_id_eeprom_layout id_eeprom; + +// NUM_AP should be defined from the board code +// it should be set to the value of CONFIG_MTS_NUM_ACCESSORY_PORTS +// arch/arm/mach-at91/board-dt-sam9.c +// if it is 0 or undefined, there is no accessory card support on this HW +#ifdef CONFIG_MTS_NUM_ACCESSORY_PORTS + +#ifndef NUM_AP +#define NUM_AP CONFIG_MTS_NUM_ACCESSORY_PORTS +#endif + +#else +#define NUM_AP 0 +#endif + +static uint8_t mts_hw_version; +static struct platform_device *mts_io_platform_device; +static struct attribute_group *attr_group; +static struct attribute_group *attr_group_lora; // on-board lora peripheral to be stored in the lora/ sub-directory +static struct gpio_pin *gpio_pins; + +DEFINE_MUTEX(mts_io_mutex); + +static unsigned int *timings_data = NULL; +static unsigned int timings_data_size = 0; +static unsigned int timings_data_index = 0; +static time_t timings_data_stop_seconds = 0; +static struct timer_list radio_reset_timer; +static volatile int radio_reset_timer_is_start = 0; +static struct timer_list radio_reset_available_timer; +static volatile int radio_reset_available_timer_is_start = 0; +static time_t time_now_secs(void); +static void radio_reset_available_timer_callback(unsigned long data); +static void radio_reset_timer_callback(unsigned long data); + +/* generic GPIO support */ +#include "gpio.c" + +/* reset button handling */ +#define RESET_CHECK_PER_SEC 8 +#define RESET_INTERVAL (HZ / RESET_CHECK_PER_SEC) +#define RESET_HOLD_COUNT (RESET_CHECK_PER_SEC * 3) +#define RESET_LONG_HOLD_COUNT (RESET_CHECK_PER_SEC * 30) + +static pid_t reset_pid = -1; +static pid_t reset_count = 0; +bool sent_extra_long = false; +static int reset_short_signal = SIGUSR1; +static int reset_long_signal = SIGUSR2; +static int reset_extra_long_signal = SIGHUP; +static int reset_short_interval = RESET_HOLD_COUNT; +static int reset_long_interval = RESET_LONG_HOLD_COUNT; + +/* + * This function takes the product_id and tries to check + * for a modem. If there is an error, assume there is a + * modem. Saying there is a modem when there is not + * just results in a slower boot. + * If no hyphen in product ID, or no product ID, + * assume we have a radio. + * If there is a hyphen test the character after the + * first hyphen: + * If the character is numeric, we have no modem. + * if the chracter is not a B, we have a modem. + * If the character is a B, and it is followed + * by a numeric, we have no modem. + * If the B is the last character or is followed + * by a numeric, we have no modem. + * All other cases, we have a modem. + */ +static int +has_radio(const char *product_id, size_t len) +{ + char *p; + if (!product_id || ! *product_id) + return 1; /* No Product ID? */ + p = memchr(product_id,'-',len); + if (p) { /* Found a hyphen */ + log_debug("Found hyphen"); + p++; + if (p >= product_id+len) { + log_debug("End of string -- hyphen"); + return 1; /* Last character was hyphen */ + } + if (isdigit(*p)) { + log_debug("Found digit after hypen"); + return 0; /* Modem name never starts with a digit */ + } + if (*p != 'B') { + log_debug("Found neither B nor digit after hypen"); + return 1; /* Modem starting with a letter, but not B */ + } + /* Found a B */ + p++; + if (p >= product_id+len) { + log_debug("B at end of product-id string"); + return 1; /* Last character was B */ + } + if (isdigit(*p)) { + log_debug("B followed by digit after hyphen - no modem"); + return 0; /* B[numeric] is MTR Build number */ + } + log_debug("B followed by non-digit after hyphen - has modem"); + return 1; /* B[non-numeric] so assume a modem that starts with B */ + } /* End of found hyphen case */ + log_debug("Undefined product-id - has modem"); + return 1; /* Product id invalid or empty, so instantiate a radio anyway */ +} + + +#ifndef NEW_BUTTON_INTERFACE +static void reset_callback(struct work_struct *ignored); + +static DECLARE_DELAYED_WORK(reset_work, reset_callback); +static void reset_callback(struct work_struct *ignored) +{ + struct gpio_pin *pin; + int reset_pressed = 0; + struct pid *vpid = NULL; + + mutex_lock(&mts_io_mutex); + + pin = gpio_pin_by_attr_name("reset"); + if (pin) { + reset_pressed = !gpio_get_value(pin->pin.gpio); + } + + if (reset_pid > 0) { + vpid = find_vpid(reset_pid); + } + + if (vpid) { + if (reset_pressed) { + reset_count++; + } else { + //Reset button has not been pressed + if (reset_count > 0 && reset_count < reset_short_interval) { + kill_pid(vpid, reset_short_signal, 1); + } else if (reset_count >= reset_short_interval && reset_count < reset_long_interval) { + kill_pid(vpid, reset_long_signal, 1); + } + + reset_count = 0; + sent_extra_long = false; + } + if (reset_count >= reset_long_interval && ! sent_extra_long) { + kill_pid(vpid, reset_extra_long_signal, 1); + sent_extra_long = true; + } + } else { + reset_count = 0; + } + + mutex_unlock(&mts_io_mutex); + + schedule_delayed_work(&reset_work, RESET_INTERVAL); +} + +static ssize_t mts_attr_show_reset_monitor_intervals(struct device *dev, struct device_attribute *attr, char *buf) +{ + int ret; + + mutex_lock(&mts_io_mutex); + + ret = sprintf(buf, "%d %d\n", reset_short_interval / RESET_CHECK_PER_SEC, reset_long_interval / RESET_CHECK_PER_SEC); + + mutex_unlock(&mts_io_mutex); + + return ret; +} + +static ssize_t mts_attr_store_reset_monitor_intervals(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + int short_int; + int long_int; + + if (sscanf(buf, "%i %i", &short_int, &long_int) != 2) { + return -EINVAL; + } + + mutex_lock(&mts_io_mutex); + + reset_short_interval = short_int * RESET_CHECK_PER_SEC; + reset_long_interval = long_int * RESET_CHECK_PER_SEC; + + mutex_unlock(&mts_io_mutex); + + return count; +} + +static DEVICE_ATTR_MTS(dev_attr_reset_monitor_intervals, "reset-monitor-intervals", + mts_attr_show_reset_monitor_intervals, mts_attr_store_reset_monitor_intervals); + +static ssize_t mts_attr_show_reset_monitor(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + + mutex_lock(&mts_io_mutex); + + ret = sprintf(buf, "%d %d %d %d\n", reset_pid, reset_short_signal, reset_long_signal, reset_extra_long_signal); + + mutex_unlock(&mts_io_mutex); + + return ret; +} + +static ssize_t mts_attr_store_reset_monitor(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + pid_t pid; + int short_signal; + int long_signal; + int extra_long_signal; + int result = sscanf(buf, "%i %i %i %i", &pid, &short_signal, &long_signal, &extra_long_signal); + + if (result < 3 || result > 4) { + return -EINVAL; + } + + if(result == 3) { + mutex_lock(&mts_io_mutex); + + reset_pid = pid; + reset_short_signal = short_signal; + reset_long_signal = long_signal; + + mutex_unlock(&mts_io_mutex); + } else { + mutex_lock(&mts_io_mutex); + + reset_pid = pid; + reset_short_signal = short_signal; + reset_long_signal = long_signal; + reset_extra_long_signal = extra_long_signal; + + mutex_unlock(&mts_io_mutex); + } + + return count; +} + +static DEVICE_ATTR_MTS(dev_attr_reset_monitor, "reset-monitor", + mts_attr_show_reset_monitor, mts_attr_store_reset_monitor); +static DEVICE_ATTR_RO_MTS(dev_attr_reset, "reset", mts_attr_show_gpio_pin); +#endif +/* active-low socket modem reset */ +static ssize_t mts_attr_store_radio_reset(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int value; /* 0 = normal reset; -1 = forced reset */ + int err; + struct gpio_pin *pin; + + if (sscanf(buf, "%i", &value) != 1) { + return -EINVAL; + } + if (value != 0 && value != -1) { + return -EINVAL; + } + + /* check reset timings is enabled */ + if (value != -1 && NULL != timings_data) { + /* check reset timer is started */ + if (radio_reset_timer_is_start == 1) { + log_info("radio reset timer is running. \n"); + return count; + } + + /* check reset timer available is started */ + if (radio_reset_available_timer_is_start == 1) { + del_timer(&radio_reset_available_timer); + radio_reset_available_timer_is_start = 0; + } + + /* reset timer not started, start it */ + mod_timer(&radio_reset_timer, jiffies + msecs_to_jiffies((timings_data[timings_data_index]) * 1000)); + //log_info("radio reset timer is start = [%d]\n", time_now_secs()); + /* save timings_data_stop_seconds */ + timings_data_stop_seconds = timings_data[timings_data_index] + time_now_secs(); + radio_reset_timer_is_start = 1; + } + + log_info("radio is reset\n"); + + pin = gpio_pin_by_attr_name("radio-reset"); + + if (!pin) { + return -ENODEV; + } + + mutex_lock(&mts_io_mutex); + + // 250ms low reset + err = reset_gpio_pin(pin, 250, 0); + + mutex_unlock(&mts_io_mutex); + + if (err) { + return err; + } + + return count; +} + +static DEVICE_ATTR_MTS(dev_attr_radio_reset, "radio-reset", + mts_attr_show_gpio_pin, mts_attr_store_radio_reset); + +/* shared gpio attributes */ +static DEVICE_ATTR_MTS(dev_attr_radio_power, "radio-power", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +/* backoff-timers */ +static time_t time_now_secs(void) +{ + struct timespec ts = current_kernel_time(); + return ts.tv_sec; +} + +static void radio_reset_available_timer_callback( unsigned long data ) +{ + /* do your timer stuff here */ + //log_info("radio_reset_available_timer_callback\n"); + //log_info("radio reset available timer is stop = [%d]\n", time_now_secs()); + + /* zero timings_data_index */ + timings_data_index = 0; + //log_info("timings data index is zero = [%d]\n", timings_data_index); + radio_reset_available_timer_is_start = 0; +} + +static void radio_reset_timer_callback( unsigned long data ) +{ + /* do your timer stuff here */ + //log_info("radio_reset_timer_callback\n"); + //log_info("radio reset timer is stop = [%d]\n", time_now_secs()); + + /* increment timings_data_index */ + timings_data_index++; + if(timings_data_index >= timings_data_size) { + timings_data_index = timings_data_size-1; + } + + //log_info("timings data index = [%d]\n", timings_data_index); + + /* reset available timer not started, start it */ + mod_timer(&radio_reset_available_timer, jiffies + msecs_to_jiffies((timings_data[timings_data_index]) * 1000)); + //log_info("radio reset available timer is start = [%d]\n", time_now_secs()); + radio_reset_available_timer_is_start = 1; + radio_reset_timer_is_start = 0; +} + +static ssize_t mts_attr_store_radio_reset_backoffs(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + char *timings_data_str = NULL; + const char delimiter[] = " "; + char * pch = NULL; + unsigned int size = 0; + + /* free previous timings_data */ + if (NULL != timings_data) { + /* stop timers */ + del_timer(&radio_reset_timer); + del_timer(&radio_reset_available_timer); + timings_data_index = 0; + radio_reset_timer_is_start = 0; + radio_reset_available_timer_is_start = 0; + + //log_info("free previous timings_data\n"); + kfree(timings_data); + timings_data = NULL; + timings_data_size = 0; + } + + /* make a copy */ + if( NULL == (timings_data_str = kzalloc((strlen(buf) + 1), GFP_KERNEL)) ){ + log_error("can`t allocate memory\n"); + return -EINVAL; + } + + //log_info("radio_reset_backoffs buf: [%s]", buf); + strncpy(timings_data_str, buf, (strlen(buf) + 1)); + + /* get number of tokens */ + while (NULL != (pch = strsep (&timings_data_str, delimiter))) { + int value = 0; + sscanf(pch, "%d", &value); + //log_info("radio reset backoffs pch = [%s]\n", pch); + if (value > 0){ + size++; + if (NULL == timings_data) { + /* make alloc */ + if (NULL == (timings_data = kmalloc(sizeof(unsigned int), GFP_KERNEL))) { + log_error("radio reset backoffs can`t allocate memory\n"); + goto free; + } + } else { + /* make realloc */ + if (NULL == (timings_data = krealloc(timings_data, size * sizeof(unsigned int), GFP_KERNEL))) { + log_error("radio reset backoffs can`t allocate memory\n"); + goto free; + } + } + /* save timings data */ + sscanf(pch, "%d", &timings_data[size-1]); + } + } + + timings_data_size = size; + //log_info("timings_data_size = %d\n", timings_data_size); + + if (NULL != timings_data_str) { + /* free timings_data_str */ + /* never get here in happy path */ + kfree(timings_data_str); + } + return count; + +free: + if (NULL != timings_data_str) { + /* free timings_data_str */ + kfree(timings_data_str); + } + + if (NULL != timings_data) { + kfree(timings_data); + timings_data = NULL; + timings_data_size = 0; + } + return -EINVAL; +} + +static ssize_t mts_attr_store_radio_reset_backoffs_index(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int value; + + if (sscanf(buf, "%d", &value) != 1) { + return -EINVAL; + } + + if ((value < 0) || (value >= timings_data_size)) { + log_error("incorrect data\n"); + return -EINVAL; + } + + /* stop timers */ + del_timer(&radio_reset_timer); + del_timer(&radio_reset_available_timer); + radio_reset_timer_is_start = 0; + radio_reset_available_timer_is_start = 0; + timings_data_index = value; + + return count; +} + +static ssize_t mts_attr_show_radio_reset_backoffs(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret = 0; + size_t i = 0; + size_t buf_left = 0; + + if (NULL != timings_data) { + for(i = 0; i < timings_data_size; ++i) { + buf_left = PAGE_SIZE - ret; + ret += snprintf(buf += strlen(buf), buf_left, "%d ", timings_data[i]); + } + } + + if (ret > 0) { + ret -= 1; + } + + return ret; +} + +static ssize_t mts_attr_show_radio_reset_backoff_index(struct device *dev, + struct device_attribute *attr, char *buf) +{ + ssize_t value; + + if (strcmp(attr->attr.name, "radio-reset-backoff-index") == 0) { + value = sprintf(buf, "%d", timings_data_index); + } + else { + log_error("attribute '%s' not found", attr->attr.name); + value = -1; + } + + return value; +} + +static ssize_t mts_attr_show_radio_reset_backoff_seconds(struct device *dev, + struct device_attribute *attr, char *buf) +{ + ssize_t value; + + if (strcmp(attr->attr.name, "radio-reset-backoff-seconds") == 0) { + if (radio_reset_timer_is_start == 1) { + value = sprintf(buf, "%lu", (timings_data_stop_seconds - time_now_secs())); + } else { + value = sprintf(buf, "%d", 0); + } + } else { + log_error("attribute '%s' not found", attr->attr.name); + value = -1; + } + + return value; +} + +static DEVICE_ATTR_MTS(dev_attr_radio_reset_backoffs, "radio-reset-backoffs", + mts_attr_show_radio_reset_backoffs, mts_attr_store_radio_reset_backoffs); + +static DEVICE_ATTR_MTS(dev_attr_radio_reset_backoff_index, "radio-reset-backoff-index", + mts_attr_show_radio_reset_backoff_index, mts_attr_store_radio_reset_backoffs_index); + +static DEVICE_ATTR_RO_MTS(dev_attr_radio_reset_backoff_seconds, "radio-reset-backoff-seconds", + mts_attr_show_radio_reset_backoff_seconds); + +/* shared gpio-based LEDs */ +static DEVICE_ATTR_MTS(dev_attr_led_status, "led-status", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +static DEVICE_ATTR_MTS(dev_attr_led_a_gpio, "led-a", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +#if LED_LS_CONTROLLABLE +static DEVICE_ATTR_MTS(dev_attr_led_ls, "led-ls", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +#else +static DEVICE_ATTR_RO_MTS(dev_attr_led_ls, "led-ls", + mts_attr_show_gpio_pin); +#endif + +static DEVICE_ATTR_MTS(dev_attr_led_b_gpio, "led-b", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +static DEVICE_ATTR_MTS(dev_attr_led_cd_gpio, "led-cd", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +static DEVICE_ATTR_MTS(dev_attr_led_c_gpio, "led-c", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +static DEVICE_ATTR_MTS(dev_attr_led_sig1_gpio, "led-sig1", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +static DEVICE_ATTR_MTS(dev_attr_led_sig2_gpio, "led-sig2", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +static DEVICE_ATTR_MTS(dev_attr_led_sig3_gpio, "led-sig3", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +static DEVICE_ATTR_MTS(dev_attr_led_d_gpio, "led-d", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); +static DEVICE_ATTR_MTS(dev_attr_led_e_gpio, "led-e", + mts_attr_show_gpio_pin, mts_attr_store_gpio_pin); + +/* eeprom info */ +static ssize_t mts_attr_show_product_info(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int i; + ssize_t value; + + if (strcmp(attr->attr.name, "vendor-id") == 0) { + value = sprintf(buf, "%.32s\n", id_eeprom.vendor_id); + } else if (strcmp(attr->attr.name, "product-id") == 0) { + value = sprintf(buf, "%.32s\n", id_eeprom.product_id); + } else if (strcmp(attr->attr.name, "has-radio") == 0) { + value = sprintf(buf, "%1d\n", + has_radio(id_eeprom.product_id,sizeof id_eeprom.product_id)); + } else if (strcmp(attr->attr.name, "device-id") == 0) { + value = sprintf(buf, "%.32s\n", id_eeprom.device_id); + } else if (strcmp(attr->attr.name, "uuid") == 0) { + //Loop Through UUID Bytes and print them in HEX + + for(i = 0; i < 16; i++) { + value = sprintf(buf, "%02X", id_eeprom.uuid[i]); + if(value == -1) { + return value; + } + buf += value; + } + value = sprintf(buf, "\n"); + if(value == -1) { + return value; + } + value = 33; //16*2 (ASCII HEX) + 1 ('\n') + } else if (strcmp(attr->attr.name, "hw-version") == 0) { + value = sprintf(buf, "%.32s\n", id_eeprom.hw_version); + } else if (strcmp(attr->attr.name, "imei") == 0) { + value = sprintf(buf, "%.32s\n", id_eeprom.imei); + } else if (strcmp(attr->attr.name, "mac-wifi") == 0) { + value = sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X\n", + id_eeprom.mac_wifi[0], + id_eeprom.mac_wifi[1], + id_eeprom.mac_wifi[2], + id_eeprom.mac_wifi[3], + id_eeprom.mac_wifi[4], + id_eeprom.mac_wifi[5]); + } else if (strcmp(attr->attr.name, "mac-eth") == 0) { + value = sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X\n", + id_eeprom.mac_addr[0], + id_eeprom.mac_addr[1], + id_eeprom.mac_addr[2], + id_eeprom.mac_addr[3], + id_eeprom.mac_addr[4], + id_eeprom.mac_addr[5]); + } else if (strcmp(attr->attr.name, "lora-eui") == 0) { + value = sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + id_eeprom.lora_eui[0], + id_eeprom.lora_eui[1], + id_eeprom.lora_eui[2], + id_eeprom.lora_eui[3], + id_eeprom.lora_eui[4], + id_eeprom.lora_eui[5], + id_eeprom.lora_eui[6], + id_eeprom.lora_eui[7]); + } + else { + log_error("attribute '%s' not found", attr->attr.name); + value = -1; + } + + return value; +} + +static DEVICE_ATTR_RO_MTS(dev_attr_vendor_id, "vendor-id", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_product_id, "product-id", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_has_radio, "has-radio", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_device_id, "device-id", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_uuid, "uuid", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_hw_version, "hw-version", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_imei, "imei", + mts_attr_show_product_info); +static DEVICE_ATTR_RO_MTS(dev_attr_eth_mac, "mac-eth", + mts_attr_show_product_info); + +static int get_radio_model_from_product_id(void) { + int rc = RADIO_UNKNOWN; + + if (strstr(id_eeprom.product_id, "LEU1")) rc = RADIO_LEU1; + else if (strstr(id_eeprom.product_id, "LNA3")) rc = RADIO_LNA3; + + // Add other radios as needed. + return rc; +} + + +/* include on-board lora peripheral */ +#include "mts_lora.c" + +/* include per-device pins and attributes */ +#include "mtcdt.c" +#include "mtcap.c" +#include "mtr.c" +#include "mths.c" + +/* include capabilities sub-directory support */ +#include "mts_capab.c" + + +#if NUM_AP > 0 + +/* accessory card EEPROMs */ +extern uint8_t mts_ap_eeprom[NUM_AP][512]; +static struct mts_ap_eeprom_layout ap_eeprom[NUM_AP]; +/* kobject pointers for the apX subdirectories that correspond to the accessory ports */ +static struct kobject *ap_subdirs[NUM_AP]; +/* attribute groups for the accessory ports*/ +static struct attribute_group ap_attr_groups[NUM_AP]; +/* info for accessory port (contains function pointers for setup and teardown and and useful info) */ +static struct ap_info* port_info[NUM_AP]; + +/* accessory card support */ +#include "mtac.c" +#include "mtac_gpiob.c" +#include "mtac_mfser.c" +#include "mtac_eth.c" +#include "mtac_lora.c" + +static bool load_port(int port) { + int port_index = port - 1; + memcpy(&ap_eeprom[port_index], mts_ap_eeprom[port_index], sizeof(mts_ap_eeprom[port_index])); + + if (mts_ap_eeprom[port_index][0] == 0xFF) { + log_error("uninitialized eeprom on accessory card %d", port); + } else if (mts_ap_eeprom[port_index][0] == 0x00) { + log_info("no accessory card inserted in port %d", port); + } else { + port_info[port_index] = kzalloc(sizeof(struct ap_info), GFP_KERNEL); + if (! port_info[port_index]) { + log_error("alloc of port info failed"); + return false; + } + + if (strstr(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_GPIOB)) { + if (! set_gpiob_info(port_info[port_index])) { + log_error("failed to set up gpiob port info"); + return false; + } + } else if (strstr(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_MFSER)) { + if (! set_mfser_info(port_info[port_index])) { + log_error("failed to set up mfser port info"); + return false; + } + } else if (strstr(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_ETH)) { + if (! set_eth_info(port_info[port_index])) { + log_error("failed to set up eth port info"); + return false; + } + } else if (strstr(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_LORA)) { + if (! set_lora_info(port_info[port_index])) { + log_error("failed to set up lora port info"); + return false; + } + } else { + log_error("unknown accessory card [%s] in port %d", ap_eeprom[port_index].product_id, port); + kfree(port_info[port_index]); + port_info[port_index] = NULL; + return false; + } + + log_info("accessory card %d vendor-id: %.32s", port, ap_eeprom[port_index].vendor_id); + log_info("accessory card %d product-id: %.32s", port, ap_eeprom[port_index].product_id); + log_info("accessory card %d device-id: %.32s", port, ap_eeprom[port_index].device_id); + log_info("accessory card %d hw-version: %.32s", port, ap_eeprom[port_index].hw_version); + if (strncmp(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_ETH, strlen(PRODUCT_ID_MTAC_ETH)) == 0) { + log_info("accessory card %d mac-addr: %02X:%02X:%02X:%02X:%02X:%02X", + port, + ap_eeprom[port_index].mac_addr[0], + ap_eeprom[port_index].mac_addr[1], + ap_eeprom[port_index].mac_addr[2], + ap_eeprom[port_index].mac_addr[3], + ap_eeprom[port_index].mac_addr[4], + ap_eeprom[port_index].mac_addr[5]); + } + if (strncmp(ap_eeprom[port_index].product_id, PRODUCT_ID_MTAC_LORA, strlen(PRODUCT_ID_MTAC_LORA)) == 0) { + log_info("accessory card %d eui: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X", + port, + ap_eeprom[port_index].eui[0], + ap_eeprom[port_index].eui[1], + ap_eeprom[port_index].eui[2], + ap_eeprom[port_index].eui[3], + ap_eeprom[port_index].eui[4], + ap_eeprom[port_index].eui[5], + ap_eeprom[port_index].eui[6], + ap_eeprom[port_index].eui[7]); + } + + if (! port_info[port_index]->setup(port)) { + log_error("accessory port %d setup failed", port); + port_info[port_index]->teardown(port); + kfree(port_info[port_index]); + port_info[port_index] = NULL; + return false; + } + } + + return true; +} + +static void init_accessory_ports(void) +{ + int port_index; + + for (port_index = 0; port_index < NUM_AP; port_index++) { + port_info[port_index] = NULL; + if (! load_port(port_index+1)) { + log_error("failed to load accessory card in port %d", port_index); + } + } +} + +static void teardown_accessory_ports(void) +{ + int port_index; + + for (port_index = 0; port_index < NUM_AP; port_index++) { + if (port_info[port_index]) { + port_info[port_index]->teardown(port_index+1); + kfree(port_info[port_index]); + } + } +} +#else /* NUM_AP > 0 */ +static void init_accessory_ports(void) {} +static void teardown_accessory_ports(void) {} +#endif + +static void init_ports(void) +{ + if (DEVICE_CAPA(id_eeprom.capa, CAPA_LORA) && attr_group_lora) { + mts_load_lora_port(); + } + + init_accessory_ports(); +} + +static void teardown_ports(void) +{ + if (DEVICE_CAPA(id_eeprom.capa, CAPA_LORA) && attr_group_lora) { + mts_teardown_lora_port(); + } + + teardown_accessory_ports(); +} + + +struct attribute *freelater = NULL; // Storage to free when driver is unloaded. + +static int +mts_id_eeprom_load(void) +{ + int i, j = 0; + char buf[64] = {0}; + char* ptr; + int attr_blength; // Byte length of base attribute array + int current_blength; // Current length in bytes of attribute array + int current_count; // Number of items in array + struct attribute **all_attrs = NULL; + char *tmp; + int noradio; + + //The mts_id_eeprom buffer is initialize once on boot + //reloading the mts_io.ko module will not reinitialize this buffer + //only rebooting will reinitialize this buffer + memcpy(&id_eeprom, mts_id_eeprom, sizeof(mts_id_eeprom)); + + if (mts_id_eeprom[0] == 0xFF) { + log_error("uninitialized eeprom"); + return -EIO; + } + + noradio = ! has_radio(id_eeprom.product_id,sizeof id_eeprom.product_id); + log_debug("mts_id_eeprom: noradio=%d",noradio); + + if (((tmp=HW_VERSION_MTCAP_0_0),strncmp(id_eeprom.hw_version, tmp, strlen(tmp)) == 0) || + ((tmp=HW_VERSION_MTCAP_0_1),strncmp(id_eeprom.hw_version, tmp, strlen(tmp)) == 0)) { + /* See if we have no radio, and if so, prune out the stuff that follows */ + if(noradio) { + struct attribute **ap = mtcap_0_0_platform_attribute_group.attrs; + while(1) { + if(ap[j] == NULL) { + log_info("Did not find radio power attribute. Possible driver fault."); + break; + } + j++; + if (is_radio_power_attr_mtcap(ap[j])) { + log_info("Pruning radio feature from mts-io",j); + ap[j] = NULL; + break; + } + } + } + attr_group = &mtcap_0_0_platform_attribute_group; + gpio_pins = gpio_pins_mtcap_0_0; + set_buttons(default_buttons); + if (DEVICE_CAPA(id_eeprom.capa, CAPA_LORA)) { + attr_group_lora = &mtcap_0_0_lora_attribute_group; + } + log_info("detected board %s", tmp); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTR_0_0, strlen(HW_VERSION_MTR_0_0)) == 0) { + attr_group = &mtr_platform_attribute_group; + gpio_pins = gpio_pins_mtr_0_0; + set_buttons(default_buttons); + mts_hw_version = MTR_0_0; + log_info("detected board %s", HW_VERSION_MTR_0_0); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTR_0_1, strlen(HW_VERSION_MTR_0_1)) == 0) { + attr_group = &mtr_platform_attribute_group; + gpio_pins = gpio_pins_mtr_0_1; + set_buttons(default_buttons); + mts_hw_version = MTR_0_1; + log_info("detected board %s", HW_VERSION_MTR_0_1); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTRV1_0_0, strlen(HW_VERSION_MTRV1_0_0)) == 0) { + attr_group = &mtr_platform_attribute_group; + gpio_pins = gpio_pins_mtrv1_0_0; + set_buttons(default_buttons); + mts_hw_version = MTRV1_0_0; + log_info("detected board %s", HW_VERSION_MTRV1_0_0); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTRV1_0_1, strlen(HW_VERSION_MTRV1_0_1)) == 0) { + attr_group = &mtrv1_0_1_platform_attribute_group; + gpio_pins = gpio_pins_mtrv1_0_1; + set_buttons(default_buttons); + mts_hw_version = MTRV1_0_1; + log_info("detected board %s", HW_VERSION_MTRV1_0_1); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTRV1_0_2, strlen(HW_VERSION_MTRV1_0_2)) == 0) { + attr_group = &mtrv1_0_2_platform_attribute_group; + gpio_pins = gpio_pins_mtrv1_0_2; + set_buttons(default_buttons); + mts_hw_version = MTRV1_0_2; + log_info("detected board %s", HW_VERSION_MTRV1_0_2); + } else if (strncmp(id_eeprom.hw_version, HW_VERSION_MTHS_0_0, strlen(HW_VERSION_MTHS_0_0)) == 0) { + attr_group = &mths_0_0_platform_attribute_group; + gpio_pins = gpio_pins_mths_0_0; + set_buttons(mths_buttons_0_0); + mts_hw_version = MTHS_0_0; + log_info("detected board %s", HW_VERSION_MTHS_0_0); + } else if (((tmp=HW_VERSION_MTCDT_0_1),strncmp(id_eeprom.hw_version, tmp, strlen(tmp)) == 0) || + ((tmp=HW_VERSION_MTCDTIP_0_0),strncmp(id_eeprom.hw_version, tmp, strlen(tmp)) == 0)) { + current_blength = attr_blength = sizeof mtcdt_0_1_platform_attributes; + current_blength -= sizeof(struct attribute *); /* Length without terminating NULL */ + + /* See if we have no radio, and if so, prune out the stuff that follows */ + if(noradio) { + struct attribute **ap = mtcdt_0_1_platform_attribute_group.attrs; + while(1) { + if(ap[j] == NULL) { + log_info("Did not find radio power attribute. Possible driver fault."); + break; + } + j++; + if (is_radio_power_attr_mtcdt(ap[j])) { + log_info("Pruning radio feature from mts-io",j); + ap[j] = NULL; + current_blength = attr_blength = j * sizeof (ap[j]); + break; + } + } + } + + if(DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI)) { + attr_blength += sizeof mtcdt_0_1_wifi_bt_attributes; + } + if(DEVICE_CAPA(id_eeprom.capa, CAPA_GPS)) { + attr_blength += sizeof mtcdt_0_1_gnss_attributes; + } + if (current_blength+(sizeof(struct attribute *)) != attr_blength) { + freelater = all_attrs = kmalloc(attr_blength,GFP_KERNEL); + current_count = current_blength/(sizeof (struct attribute *)); + memcpy(all_attrs,mtcdt_0_1_platform_attributes,current_blength); + if(DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI)) { + log_info("Adding WiFi/BT to mts-io driver"); + memcpy(all_attrs + current_count,mtcdt_0_1_wifi_bt_attributes,sizeof mtcdt_0_1_wifi_bt_attributes); + current_count += sizeof mtcdt_0_1_wifi_bt_attributes / (sizeof (struct attribute *)); + } + if(DEVICE_CAPA(id_eeprom.capa, CAPA_GPS)) { + log_info("Adding GPS to mts-io driver"); + attr_blength += sizeof mtcdt_0_1_gnss_attributes; + memcpy(all_attrs + current_count,mtcdt_0_1_gnss_attributes,sizeof mtcdt_0_1_gnss_attributes); + current_count += sizeof mtcdt_0_1_gnss_attributes / (sizeof (struct attribute *)); + } + all_attrs[current_count] = (struct attribute *)NULL; + mtcdt_0_1_platform_attribute_group.attrs = all_attrs; + } + + attr_group = &mtcdt_0_1_platform_attribute_group; + gpio_pins = gpio_pins_mtcdt_0_1; + set_buttons(default_buttons); + log_info("detected board %s", tmp); + } else if ((tmp=HW_VERSION_MTCDTIPHP_0_0),strncmp(id_eeprom.hw_version, tmp, strlen(tmp)) == 0) { + current_blength = attr_blength = sizeof mtcdt_0_1_platform_attributes; + current_blength -= sizeof(struct attribute *); /* Length without terminating NULL */ + + /* See if we have no radio, and if so, prune out the stuff that follows */ + if(noradio) { + struct attribute **ap = mtcdt_0_1_platform_attribute_group.attrs; + while(1) { + if(ap[j] == NULL) { + log_info("Did not find radio power attribute. Possible driver fault."); + break; + } + j++; + if (is_radio_power_attr_mtcdt(ap[j])) { + log_info("Pruning radio feature from mts-io",j); + ap[j] = NULL; + current_blength = attr_blength = j * sizeof (ap[j]); + break; + } + } + } + if(DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI)) { + attr_blength += sizeof mtcdt_0_1_wifi_bt_attributes; + } + if (current_blength+(sizeof(struct attribute *)) != attr_blength) { + freelater = all_attrs = kmalloc(attr_blength,GFP_KERNEL); + current_count = current_blength/(sizeof (struct attribute *)); + memcpy(all_attrs,mtcdt_0_1_platform_attributes,current_blength); + if(DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI)) { + log_info("Adding WiFi/BT to mts-io driver"); + memcpy(all_attrs + current_count,mtcdt_0_1_wifi_bt_attributes,sizeof mtcdt_0_1_wifi_bt_attributes); + current_count += sizeof mtcdt_0_1_wifi_bt_attributes / (sizeof (struct attribute *)); + } + /* MTCDTIPHP does not have GPS reset/interrupt tied to the CPU + * so do not instantiate the GPS attributes */ + all_attrs[current_count] = (struct attribute *)NULL; + mtcdt_0_1_platform_attribute_group.attrs = all_attrs; + } + + attr_group = &mtcdt_0_1_platform_attribute_group; + gpio_pins = gpio_pins_mtcdt_0_1; + if (DEVICE_CAPA(id_eeprom.capa, CAPA_LORA)) { + attr_group_lora = &mtcdtiphp_0_0_lora_attribute_group; + } + set_buttons(default_buttons); + log_info("detected board %s", tmp); + } else { + if(noradio) { + struct attribute **ap = mtcdt_platform_attribute_group.attrs; + while(1) { + if(ap[j] == NULL) { + log_info("Did not find radio power attribute. Possible driver fault."); + break; + } + j++; + if (is_radio_power_attr_mtcdt(ap[j])) { + log_info("Pruning radio feature from mts-io",j); + ap[j] = NULL; + break; + } + } + } + + attr_group = &mtcdt_platform_attribute_group; + gpio_pins = gpio_pins_mtcdt_0_0; + mts_hw_version = MTCDT_0_0; + set_buttons(default_buttons); + log_info("detected board %s", HW_VERSION_MTCDT_0_0); + } + + log_info("sizeof: %lu", (unsigned long) sizeof(struct mts_id_eeprom_layout)); + log_info("vendor-id: %.32s", id_eeprom.vendor_id); + log_info("product-id: %.32s", id_eeprom.product_id); + log_info("device-id: %.32s", id_eeprom.device_id); + log_info("hw-version: %.32s", id_eeprom.hw_version); + log_info("mac-addr: %02X:%02X:%02X:%02X:%02X:%02X", + id_eeprom.mac_addr[0], + id_eeprom.mac_addr[1], + id_eeprom.mac_addr[2], + id_eeprom.mac_addr[3], + id_eeprom.mac_addr[4], + id_eeprom.mac_addr[5]); + + log_info("imei: %.32s", id_eeprom.imei); + log_info("capa-gps: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_GPS) ? "yes" : "no"); + log_info("capa-din: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_DIN) ? "yes" : "no"); + log_info("capa-dout: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_DOUT) ? "yes" : "no"); + log_info("capa-adc: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_ADC) ? "yes" : "no"); + log_info("capa-wifi: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI) ? "yes" : "no"); + log_info("capa-bluetooth: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_BLUETOOTH) ? "yes" : "no"); + log_info("capa-lora: %s", DEVICE_CAPA(id_eeprom.capa, CAPA_LORA) ? "yes" : "no"); + + if (DEVICE_CAPA(id_eeprom.capa, CAPA_BLUETOOTH)) { + log_info("mac-bluetooth: %02X:%02X:%02X:%02X:%02X:%02X", + id_eeprom.mac_bluetooth[0], + id_eeprom.mac_bluetooth[1], + id_eeprom.mac_bluetooth[2], + id_eeprom.mac_bluetooth[3], + id_eeprom.mac_bluetooth[4], + id_eeprom.mac_bluetooth[5]); + } + if (DEVICE_CAPA(id_eeprom.capa, CAPA_WIFI)) { + log_info("mac-wifi: %02X:%02X:%02X:%02X:%02X:%02X", + id_eeprom.mac_wifi[0], + id_eeprom.mac_wifi[1], + id_eeprom.mac_wifi[2], + id_eeprom.mac_wifi[3], + id_eeprom.mac_wifi[4], + id_eeprom.mac_wifi[5]); + } + //Loop Through UUID Bytes and print them in HEX + ptr = (char*)buf; + for(i = 0; i < 16; i++) { + ptr += sprintf(ptr, "%02X", id_eeprom.uuid[i]); + } + log_info("uuid: %s", (char*)buf); + + if (DEVICE_CAPA(id_eeprom.capa, CAPA_LORA)) { + log_info("lora-eui: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X", + id_eeprom.lora_eui[0], + id_eeprom.lora_eui[1], + id_eeprom.lora_eui[2], + id_eeprom.lora_eui[3], + id_eeprom.lora_eui[4], + id_eeprom.lora_eui[5], + id_eeprom.lora_eui[6], + id_eeprom.lora_eui[7]); + + log_info("lora-product-id: %.32s", id_eeprom.lora_product_id); + log_info("lora-hw-version: %.32s", id_eeprom.lora_hw_version); + } + return 0; +} + +static void cleanup(void) +{ + log_info("cleaning up...."); + if (mts_io_platform_device) { + platform_device_unregister(mts_io_platform_device); + } + + teardown_ports(); + if(freelater) { + kfree(freelater); + freelater = NULL; + } + + mts_capab_dir_delete(); +} + +static int __init mts_io_init(void) +{ + struct gpio_pin *pin; + + int ret; + + log_info("init: " DRIVER_VERSION); + + ret = mts_id_eeprom_load(); + if (ret) { + cleanup(); + return ret; + } + + mts_io_platform_device = platform_device_alloc(PLATFORM_NAME, -1); + if (!mts_io_platform_device) { + cleanup(); + return -ENOMEM; + } + + ret = platform_device_add(mts_io_platform_device); + if (ret) { + cleanup(); + return ret; + } + + init_ports(); + + ret = mts_capab_dir_create(); + if (ret) { + cleanup(); + return ret; + } + + ret = sysfs_create_group(&mts_io_platform_device->dev.kobj, attr_group); + if (ret) { + cleanup(); + return ret; + } + + for (pin = gpio_pins; *pin->name; pin++) { + if (pin->capability == 0 || DEVICE_CAPA(id_eeprom.capa,pin->capability)) { + ret = gpio_request_one(pin->pin.gpio, pin->pin.flags, pin->pin.label); + if (ret) + log_debug("could not request pin %s (%d) but it could have already been requested under a different pin name", pin->name, ret); + } + } +#ifndef NEW_BUTTON_INTERFACE + // start the reset handler + reset_callback(NULL); +#else + // start general buttons processing + init_buttons(); +#endif + /* init timers */ + setup_timer(&radio_reset_timer, radio_reset_timer_callback, 0); + setup_timer(&radio_reset_available_timer, radio_reset_available_timer_callback, 0); + + return 0; +} + +static void __exit mts_io_exit(void) +{ + /* delete radio_reset_timer */ + del_timer(&radio_reset_timer); + /* delete radio_reset_available_timer */ + del_timer(&radio_reset_available_timer); + +#ifndef NEW_BUTTON_INTERFACE + cancel_delayed_work_sync(&reset_work); +#else + cleanup_buttons(); +#endif + cleanup(); + + log_info("exiting"); +} + +module_init(mts_io_init); +module_exit(mts_io_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); + +MODULE_ALIAS("mts-io-ap1-dout"); +MODULE_ALIAS("mts-io-ap1-din"); +MODULE_ALIAS("mts-io-ap1-adc"); +MODULE_ALIAS("mts-io-ap2-dout"); +MODULE_ALIAS("mts-io-ap2-din"); +MODULE_ALIAS("mts-io-ap2-adc"); |