//-->Carlisle add for ATD querying gauge IC status
int check_gaugeIC_status_read(char *page, char **start, off_t off, int count, int *eof, void *date)
{
struct i2c_client *client = NULL;
int len;
int ret;
int flags=0;
int gauge_status=0;
client = bq27520_dev_info.i2c;
ret = bq27520_send_subcmd(client, &flags, BQ27520_SUBCMD_CTNL_STATUS);
if (ret==0) {
gauge_status=1;
len = sprintf(page, "%d\n", gauge_status);
}
else {
dev_err(&client->dev, "Send subcommand error %d.\n", ret);
len = sprintf(page, "%d\n", gauge_status);
}
return len;
}
int bq27520_exit_rom_mode()
{
int retry = RETRY_COUNT;
struct i2c_client *i2c = NULL;
struct i2c_client *client = NULL;
int val=0;
int ret=0;
mutex_lock(&batt_dev_upt_mutex);
i2c = batt_upt_dev_info.i2c;
mutex_unlock(&batt_dev_upt_mutex);
BAT_DBG_E("[%s] enter \n", __func__);
while (retry--) {
ret = bq27520_write_i2c(i2c, 0x00, 0x0F, 1);
if (ret < 0) continue;
ret = bq27520_write_i2c(i2c, 0x64, 0x0F, 1);
if (ret < 0) continue;
ret = bq27520_write_i2c(i2c, 0x65, 0x00, 1);
if (ret < 0) continue;
break;
};
if (!retry) {
BAT_DBG_E("Exit ROM mode FAIL \n");
return ret;
}
/*
* verify it's NOT ROM node.
* Yes if read registers FAIL from now on.
*/
ret = bq27520_read_i2c(i2c, 0x00, &val, 1);
if (!ret) {
BAT_DBG_E("Exit ROM Mode verification FAIL.\n");
return -EACCES;
}
/*
* wait 1s and send IT_ENABLE command
* (battery team request)
*/
msleep(1000);
mutex_lock(&bq27520_dev_info_mutex);
client = bq27520_dev_info.i2c;
mutex_unlock(&bq27520_dev_info_mutex);
ret = bq27520_send_subcmd(client, NULL, BQ27520_SUBCMD_ENABLE_IT);
if (ret)
return ret;
return 0;
}
