diff options
Diffstat (limited to '60xx/libsensors_iio/software/core/mllite/linux/ml_sysfs_helper.c')
| -rw-r--r-- | 60xx/libsensors_iio/software/core/mllite/linux/ml_sysfs_helper.c | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/60xx/libsensors_iio/software/core/mllite/linux/ml_sysfs_helper.c b/60xx/libsensors_iio/software/core/mllite/linux/ml_sysfs_helper.c deleted file mode 100644 index d0c4513..0000000 --- a/60xx/libsensors_iio/software/core/mllite/linux/ml_sysfs_helper.c +++ /dev/null @@ -1,423 +0,0 @@ -#include <string.h> -#include <stdio.h> -#include "ml_sysfs_helper.h" -#include <dirent.h> -#include <ctype.h> -#define MPU_SYSFS_ABS_PATH "/sys/class/invensense/mpu" - -enum PROC_SYSFS_CMD { - CMD_GET_SYSFS_PATH, - CMD_GET_DMP_PATH, - CMD_GET_CHIP_NAME, - CMD_GET_SYSFS_KEY, - CMD_GET_TRIGGER_PATH, - CMD_GET_DEVICE_NODE -}; -static char sysfs_path[100]; -static char *chip_name[] = { - "ITG3500", - "MPU6050", - "MPU9150", - "MPU3050", - "MPU6500" -}; -static int chip_ind; -static int initialized =0; -static int status = 0; -static int iio_initialized = 0; -static int iio_dev_num = 0; - -#define IIO_MAX_NAME_LENGTH 30 - -#define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements" -#define FORMAT_TYPE_FILE "%s_type" - -#define CHIP_NUM ARRAY_SIZE(chip_name) - -static const char *iio_dir = "/sys/bus/iio/devices/"; - -/** - * find_type_by_name() - function to match top level types by name - * @name: top level type instance name - * @type: the type of top level instance being sort - * - * Typical types this is used for are device and trigger. - **/ -int find_type_by_name(const char *name, const char *type) -{ - const struct dirent *ent; - int number, numstrlen; - - FILE *nameFile; - DIR *dp; - char thisname[IIO_MAX_NAME_LENGTH]; - char *filename; - - dp = opendir(iio_dir); - if (dp == NULL) { - printf("No industrialio devices available"); - return -ENODEV; - } - - while (ent = readdir(dp), ent != NULL) { - if (strcmp(ent->d_name, ".") != 0 && - strcmp(ent->d_name, "..") != 0 && - strlen(ent->d_name) > strlen(type) && - strncmp(ent->d_name, type, strlen(type)) == 0) { - numstrlen = sscanf(ent->d_name + strlen(type), - "%d", - &number); - /* verify the next character is not a colon */ - if (strncmp(ent->d_name + strlen(type) + numstrlen, - ":", - 1) != 0) { - filename = malloc(strlen(iio_dir) - + strlen(type) - + numstrlen - + 6); - if (filename == NULL) - return -ENOMEM; - sprintf(filename, "%s%s%d/name", - iio_dir, - type, - number); - nameFile = fopen(filename, "r"); - if (!nameFile) - continue; - free(filename); - fscanf(nameFile, "%s", thisname); - if (strcmp(name, thisname) == 0) - return number; - fclose(nameFile); - } - } - } - return -ENODEV; -} - -/* mode 0: search for which chip in the system and fill sysfs path - mode 1: return event number - */ -static int parsing_proc_input(int mode, char *name){ - const char input[] = "/proc/bus/input/devices"; - char line[4096], d; - char tmp[100]; - FILE *fp; - int i, j, result, find_flag; - int event_number = -1; - int input_number = -1; - - if(NULL == (fp = fopen(input, "rt")) ){ - return -1; - } - result = 1; - find_flag = 0; - while(result != 0 && find_flag < 2){ - i = 0; - d = 0; - memset(line, 0, 100); - while(d != '\n'){ - result = fread(&d, 1, 1, fp); - if(result == 0){ - line[0] = 0; - break; - } - sprintf(&line[i], "%c", d); - i ++; - } - if(line[0] == 'N'){ - i = 1; - while(line[i] != '"'){ - i++; - } - i++; - j = 0; - find_flag = 0; - if (mode == 0){ - while(j < CHIP_NUM){ - if(!memcmp(&line[i], chip_name[j], strlen(chip_name[j]))){ - find_flag = 1; - chip_ind = j; - } - j++; - } - } else if (mode != 0){ - if(!memcmp(&line[i], name, strlen(name))){ - find_flag = 1; - } - } - } - if(find_flag){ - if(mode == 0){ - if(line[0] == 'S'){ - memset(tmp, 0, 100); - i =1; - while(line[i] != '=') i++; - i++; - j = 0; - while(line[i] != '\n'){ - tmp[j] = line[i]; - i ++; j++; - } - sprintf(sysfs_path, "%s%s", "/sys", tmp); - find_flag++; - } - } else if(mode == 1){ - if(line[0] == 'H') { - i = 2; - while(line[i] != '=') i++; - while(line[i] != 't') i++; - i++; - event_number = 0; - while(line[i] != '\n'){ - if(line[i] >= '0' && line[i] <= '9') - event_number = event_number*10 + line[i]-0x30; - i ++; - } - find_flag ++; - } - } else if (mode == 2) { - if(line[0] == 'S'){ - memset(tmp, 0, 100); - i =1; - while(line[i] != '=') i++; - i++; - j = 0; - while(line[i] != '\n'){ - tmp[j] = line[i]; - i ++; j++; - } - input_number = 0; - if(tmp[j-2] >= '0' && tmp[j-2] <= '9') - input_number += (tmp[j-2]-0x30)*10; - if(tmp[j-1] >= '0' && tmp[j-1] <= '9') - input_number += (tmp[j-1]-0x30); - find_flag++; - } - } - } - } - fclose(fp); - if(find_flag == 0){ - return -1; - } - if(0 == mode) - status = 1; - if (mode == 1) - return event_number; - if (mode == 2) - return input_number; - return 0; - -} -static void init_iio() { - int i, j; - char iio_chip[10]; - int dev_num; - for(j=0; j< CHIP_NUM; j++) { - for (i=0; i<strlen(chip_name[j]); i++) { - iio_chip[i] = tolower(chip_name[j][i]); - } - iio_chip[strlen(chip_name[0])] = '\0'; - dev_num = find_type_by_name(iio_chip, "iio:device"); - if(dev_num >= 0) { - iio_initialized = 1; - iio_dev_num = dev_num; - chip_ind = j; - } - } -} - -static int process_sysfs_request(enum PROC_SYSFS_CMD cmd, char *data) -{ - char key_path[100]; - FILE *fp; - int i, result; - if(initialized == 0){ - parsing_proc_input(0, NULL); - initialized = 1; - } - if(initialized && status == 0) { - init_iio(); - if (iio_initialized == 0) - return -1; - } - - memset(key_path, 0, 100); - switch(cmd){ - case CMD_GET_SYSFS_PATH: - if (iio_initialized == 1) - sprintf(data, "/sys/bus/iio/devices/iio:device%d", iio_dev_num); - else - sprintf(data, "%s%s", sysfs_path, "/device/invensense/mpu"); - break; - case CMD_GET_DMP_PATH: - if (iio_initialized == 1) - sprintf(data, "/sys/bus/iio/devices/iio:device%d/dmp_firmware", iio_dev_num); - else - sprintf(data, "%s%s", sysfs_path, "/device/invensense/mpu/dmp_firmware"); - break; - case CMD_GET_CHIP_NAME: - sprintf(data, "%s", chip_name[chip_ind]); - break; - case CMD_GET_TRIGGER_PATH: - sprintf(data, "/sys/bus/iio/devices/trigger%d", iio_dev_num); - break; - case CMD_GET_DEVICE_NODE: - sprintf(data, "/dev/iio:device%d", iio_dev_num); - break; - case CMD_GET_SYSFS_KEY: - memset(key_path, 0, 100); - if (iio_initialized == 1) - sprintf(key_path, "/sys/bus/iio/devices/iio:device%d/key", iio_dev_num); - else - sprintf(key_path, "%s%s", sysfs_path, "/device/invensense/mpu/key"); - - if((fp = fopen(key_path, "rt")) == NULL) - return -1; - for(i=0;i<16;i++){ - fscanf(fp, "%02x", &result); - data[i] = (char)result; - } - - fclose(fp); - break; - default: - break; - } - return 0; -} -/** - * @brief return sysfs key. if the key is not available - * return false. So the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the key - * It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_sysfs_key(unsigned char *key) -{ - if (process_sysfs_request(CMD_GET_SYSFS_KEY, (char*)key) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} - -/** - * @brief return the sysfs path. If the path is not - * found yet. return false. So the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the sysfs - * path. It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_sysfs_path(char *name) -{ - if (process_sysfs_request(CMD_GET_SYSFS_PATH, name) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} - -inv_error_t inv_get_sysfs_abs_path(char *name) -{ - strcpy(name, MPU_SYSFS_ABS_PATH); - return INV_SUCCESS; -} - -/** - * @brief return the dmp file path. If the path is not - * found yet. return false. So the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the dmp file - * path. It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_dmpfile(char *name) -{ - if (process_sysfs_request(CMD_GET_DMP_PATH, name) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} -/** - * @brief return the chip name. If the chip is not - * found yet. return false. So the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the chip name - * path(8 bytes). It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_chip_name(char *name) -{ - if (process_sysfs_request(CMD_GET_CHIP_NAME, name) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} -/** - * @brief return event handler number. If the handler number is not found - * return false. the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the chip name - * path(8 bytes). It should be zeroed before calling this function. - * Or it could have unpredicable result. - * @int *num: event number store - */ -inv_error_t inv_get_handler_number(const char *name, int *num) -{ - initialized = 0; - if ((*num = parsing_proc_input(1, (char *)name)) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} - -/** - * @brief return input number. If the handler number is not found - * return false. the return value must be checked - * to make sure the path is valid. - * @unsigned char *name: This should be array big enough to hold the chip name - * path(8 bytes). It should be zeroed before calling this function. - * Or it could have unpredicable result. - * @int *num: input number store - */ -inv_error_t inv_get_input_number(const char *name, int *num) -{ - initialized = 0; - if ((*num = parsing_proc_input(2, (char *)name)) < 0) - return INV_ERROR_NOT_OPENED; - else { - return INV_SUCCESS; - } -} - -/** - * @brief return iio trigger name. If iio is not initialized, return false. - * So the return must be checked to make sure the numeber is valid. - * @unsigned char *name: This should be array big enough to hold the trigger - * name. It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_iio_trigger_path(char *name) -{ - if (process_sysfs_request(CMD_GET_TRIGGER_PATH, (char *)name) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} - -/** - * @brief return iio device node. If iio is not initialized, return false. - * So the return must be checked to make sure the numeber is valid. - * @unsigned char *name: This should be array big enough to hold the device - * node. It should be zeroed before calling this function. - * Or it could have unpredicable result. - */ -inv_error_t inv_get_iio_device_node(char *name) -{ - if (process_sysfs_request(CMD_GET_DEVICE_NODE, (char *)name) < 0) - return INV_ERROR_NOT_OPENED; - else - return INV_SUCCESS; -} |