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@@ -43,12 +43,6 @@ enum bus_probe_state {
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};
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struct bes_cdev {
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struct cdev cdev;
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dev_t dev_id;
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int major;
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int minor;
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struct class *class;
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struct device *device;
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atomic_t num_proc;
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wait_queue_head_t open_wq;
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spinlock_t status_lock;
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@@ -249,351 +243,18 @@ int bes2600_switch_bt(bool on)
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return ret;
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}
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static int bes2600_get_cmd_and_ifname(const char *str, char **result)
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{
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int cmd_len = 0;
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int ifname_len = 0;
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char *sp = NULL;
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char *tmp_ptr = NULL;
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char *cmd_ptr = NULL;
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/* check if input arguments is valid */
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if (!str || strncmp(str, "ifname:", 7) != 0)
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return -1;
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sp = strchr(str, ' ');
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if (strncmp(sp + 1, "cmd:", 4) != 0)
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return -1;
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/* extract interface name */
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ifname_len = sp - str - 7;
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tmp_ptr = kmalloc(ifname_len + 1, GFP_KERNEL);
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if (!tmp_ptr) {
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return -2;
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}
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strncpy(tmp_ptr, str+7, ifname_len);
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tmp_ptr[ifname_len] = '\0';
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result[0] = tmp_ptr;
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/* get command length */
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cmd_ptr = strstr(str, "cmd:");
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cmd_ptr += 4;
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sp = strchr(cmd_ptr, ' ');
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if (!sp) { /* the command don't have any parameter */
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cmd_len = strlen(cmd_ptr);
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if (cmd_ptr[cmd_len - 1] == '\n')
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--cmd_len;
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} else { /* the command have one or more parameter */
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cmd_len = sp - cmd_ptr;
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}
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/* copy command to out buffer */
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tmp_ptr = kmalloc( cmd_len + 1, GFP_KERNEL);
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if (!tmp_ptr) {
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kfree(result[0]);
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result[0] = NULL;
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return -3;
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}
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strncpy(tmp_ptr, cmd_ptr, cmd_len);
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tmp_ptr[cmd_len] = '\0';
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result[1] = tmp_ptr;
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return 0;
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}
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static void bes2600_recyle_cmd_and_ifname_mem(char **info)
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{
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if (info[0]) {
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kfree(info[0]);
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info[0] = NULL;
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}
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if (info[1]) {
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kfree(info[1]);
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info[1] = NULL;
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}
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}
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static int bes2600_op_default_handler(const char *str)
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{
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char *info[2] = {0};
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if (bes2600_get_cmd_and_ifname(str, info) == 0) {
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bes_devel("cmd(%s) on %s not handled\n", info[1], info[0]);
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} else {
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bes_err("%s get command fail, the origin string is %s\n", __func__, str);
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}
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bes2600_recyle_cmd_and_ifname_mem(info);
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return 0;
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}
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static int bes2600_op_wifi_bt_on_off(const char *str)
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{
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char *info[2] = {0};
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int ret = 0;
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enum wait_state wait_state;
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enum bus_probe_state probe_state;
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unsigned long status = 0;
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spin_lock(&bes2600_cdev.status_lock);
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probe_state = bes2600_cdev.bus_probe;
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wait_state = bes2600_cdev.wait_state;
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spin_unlock(&bes2600_cdev.status_lock);
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/* only work for wifi signal mode */
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if (bes2600_cdev.fw_type != BES2600_FW_TYPE_WIFI_SIGNAL)
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return -EFAULT;
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/* wait bus probe operation end */
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if (probe_state == BES2600_BUS_PROBE_START) {
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bes_devel("wait bus probe operation end\n");
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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(bes2600_cdev.bus_probe > BES2600_BUS_PROBE_START),
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HZ);
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WARN_ON(status <= 0);
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}
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/* must wait previous operation end in critical section */
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if (wait_state != BES2600_BOOT_WAIT_NONE) {
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bes_devel("wait previous operation end\n");
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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(bes2600_cdev.wait_state == BES2600_BOOT_WAIT_NONE),
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HZ * 8);
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WARN_ON(status <= 0);
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}
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/* if dpd calibration is doing, modify wifi and bt state directly */
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spin_lock(&bes2600_cdev.status_lock);
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if (bes2600_cdev.bus_probe == BES2600_BUS_PROBE_OK && !bes2600_cdev.dpd_calied) {
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if (bes2600_get_cmd_and_ifname(str, info) == 0) {
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if (strncmp(info[1], "WIFI_ON", 7) == 0) {
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bes2600_cdev.wifi_opened = true;
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} else if (strncmp(info[1], "WIFI_OFF", 8) == 0) {
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bes2600_cdev.wifi_opened = false;
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} else if (strncmp(info[1], "BT_ON", 5) == 0) {
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bes2600_cdev.bt_opened = true;
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bes2600_cdev.bton_pending = true;
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} else if (strncmp(info[1], "BT_OFF", 6) == 0) {
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bes2600_cdev.bt_opened = false;
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bes2600_cdev.bton_pending = false;
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}
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}
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bes2600_recyle_cmd_and_ifname_mem(info);
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spin_unlock(&bes2600_cdev.status_lock);
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/* wait probe done event */
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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bes2600_bootup_end(), HZ * 8);
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WARN_ON(status <= 0);
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return (status <= 0 || bes2600_chrdev_is_bus_error()) ? -EFAULT : 0;
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}
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spin_unlock(&bes2600_cdev.status_lock);
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/* process wifi/bt on/off operation */
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if (bes2600_get_cmd_and_ifname(str, info) == 0) {
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if (strncmp(info[1], "WIFI_ON", 7) == 0) {
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ret = bes2600_switch_wifi(1);
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} else if (strncmp(info[1], "WIFI_OFF", 8) == 0) {
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ret = bes2600_switch_wifi(0);
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} else if (strncmp(info[1], "BT_ON", 5) == 0) {
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ret = bes2600_switch_bt(1);
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} else if (strncmp(info[1], "BT_OFF", 6) == 0) {
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ret = bes2600_switch_bt(0);
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}
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}
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if (!ret && bes2600_chrdev_check_system_close())
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ret = bes2600_chrdev_do_system_close(bes2600_cdev.sbus_ops,
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bes2600_cdev.sbus_priv);
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bes2600_recyle_cmd_and_ifname_mem(info);
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return ret ;
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}
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static int bes2600_op_change_fw_type(const char *str)
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{
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int ret = 0;
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int temp = 0;
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long status = 0;
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char *cmd_ptr = NULL;
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char fw_type[5] = {0};
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bool sys_closed = bes2600_chrdev_check_system_close();
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bes_devel("%s is called, arg:%s\n", __func__, str);
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if (!bes2600_cdev.sbus_ops->power_switch && !bes2600_cdev.sbus_ops->reboot)
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return -EPERM;
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/* check if user input is valid */
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cmd_ptr = strstr(str, "CHANGE_FW_TYPE ");
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if (strlen(str) < 16 || !cmd_ptr) {
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bes_err("the format of \"%s\" is error\n", str);
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return -EINVAL;
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}
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/* convert fw_type from string to int */
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strncpy(fw_type, cmd_ptr + 14, 4);
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fw_type[0] = '+';
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ret = kstrtoint(fw_type, 10, &temp);
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if (ret < 0) {
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bes_err("%s parse error\n", __func__);
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return -EINVAL;
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}
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/* no need to realod firmware if new fw_type is equal to the old */
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if (temp == bes2600_cdev.fw_type ) {
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bes_devel("fw type is equal\n");
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return 0;
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}
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/* close wifi net device */
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if (bes2600_cdev.sbus_priv
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&& bes2600_is_net_dev_created(bes2600_cdev.sbus_priv)) {
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bes2600_unregister_net_dev(bes2600_cdev.sbus_priv);
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}
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/* update firmware type */
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bes2600_cdev.fw_type = temp;
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bes2600_chrdev_update_signal_mode();
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if (!sys_closed) {
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/* close device to call disconnect function */
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if (bes2600_cdev.sbus_ops->power_switch)
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bes2600_cdev.sbus_ops->power_switch(bes2600_cdev.sbus_priv, 0);
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else if (bes2600_cdev.sbus_ops->reboot)
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bes2600_cdev.sbus_ops->reboot(bes2600_cdev.sbus_priv);
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}
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if (bes2600_cdev.sbus_ops->reboot)
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bes2600_chrdev_start_bus_probe();
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/* wait disconnect event */
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status = wait_event_timeout(bes2600_cdev.probe_done_wq, (bes2600_cdev.sbus_priv == NULL), HZ * 10);
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WARN_ON(status <= 0);
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if (bes2600_cdev.dpd_calied
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&& bes2600_chrdev_check_system_close()) {
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bes_devel("no need to reload firmware\n");
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return 0;
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}
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bes_devel("reload firmware...\n");
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/* power on device to call probe function */
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if (bes2600_cdev.sbus_ops->power_switch)
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bes2600_cdev.sbus_ops->power_switch(NULL, 1);
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/* wait probe done event */
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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bes2600_bootup_end(), HZ * 10);
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WARN_ON(status <= 0);
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ret = (status <= 0 || bes2600_chrdev_is_bus_error()) ? -1 : 0;
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return ret;
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}
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static int bes2600_op_bt_wakeup(const char *str)
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{
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int ret = 0;
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unsigned long status = 0;
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spin_lock(&bes2600_cdev.status_lock);
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if (!bes2600_cdev.bt_opened) {
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spin_unlock(&bes2600_cdev.status_lock);
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return -EFAULT;
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}
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spin_unlock(&bes2600_cdev.status_lock);
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/* wait probe done event */
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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bes2600_bootup_end(), HZ * 8);
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if (status <= 0 || bes2600_chrdev_is_bus_error())
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return -EFAULT;
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bes_devel("bes2600 wakeup bt.\n");
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ret = bes2600_chrdev_switch_subsys(GPIO_WAKE_FLAG_BT_LP_ON, SUBSYSTEM_BT_LP, true);
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return ret;
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}
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static int bes2600_op_bt_sleep(const char *str)
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{
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int ret = 0;
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unsigned long status = 0;
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spin_lock(&bes2600_cdev.status_lock);
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if (!bes2600_cdev.bt_opened) {
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spin_unlock(&bes2600_cdev.status_lock);
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return -EFAULT;
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}
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spin_unlock(&bes2600_cdev.status_lock);
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/* wait probe done event */
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status = wait_event_timeout(bes2600_cdev.probe_done_wq,
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bes2600_bootup_end(), HZ * 8);
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if (status <= 0 || bes2600_chrdev_is_bus_error())
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return -EFAULT;
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bes_devel("bes2600 allow bt sleep.\n");
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ret = bes2600_chrdev_switch_subsys(GPIO_WAKE_FLAG_BT_LP_OFF, SUBSYSTEM_BT_LP, false);
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return ret;
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|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int bes2600_op_set_wakeup_read_flag(const char *str)
|
|
|
|
|
{
|
|
|
|
|
bes_devel("%s is called, arg:%s\n", __func__, str);
|
|
|
|
|
spin_lock(&bes2600_cdev.status_lock);
|
|
|
|
|
bes2600_cdev.read_flag = BES_CDEV_READ_WAKEUP_STATE;
|
|
|
|
|
spin_unlock(&bes2600_cdev.status_lock);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef FW_DOWNLOAD_UART_DAEMON
|
|
|
|
|
int bes2600_load_uevent(char *env[])
|
|
|
|
|
{
|
|
|
|
|
return kobject_uevent_env(&bes2600_cdev.device->kobj, KOBJ_CHANGE, env);
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
static struct bes2600_op_map bes2600_op_map_tab[] ={
|
|
|
|
|
/*op op_len handler */
|
|
|
|
|
{"P2P_SET_NOA", 11, bes2600_op_default_handler},
|
|
|
|
|
{"P2P_SET_PS", 10, bes2600_op_default_handler},
|
|
|
|
|
{"SET_AP_WPS_P2P_IE", 17, bes2600_op_default_handler},
|
|
|
|
|
{"LINKSPEED", 9, bes2600_op_default_handler},
|
|
|
|
|
{"RSSI", 4, bes2600_op_default_handler},
|
|
|
|
|
{"GETBAND", 7, bes2600_op_default_handler},
|
|
|
|
|
{"WLS_BATCHING", 12, bes2600_op_default_handler},
|
|
|
|
|
{"MACADDR", 7, bes2600_op_default_handler},
|
|
|
|
|
{"RXFILTER-START", 14, bes2600_op_default_handler},
|
|
|
|
|
{"RXFILTER-STOP", 13, bes2600_op_default_handler},
|
|
|
|
|
{"RXFILTER-ADD", 12, bes2600_op_default_handler},
|
|
|
|
|
{"RXFILTER-REMOVE", 15, bes2600_op_default_handler},
|
|
|
|
|
{"BTCOEXMODE", 10, bes2600_op_default_handler},
|
|
|
|
|
{"BTCOEXSCAN-START", 16, bes2600_op_default_handler},
|
|
|
|
|
{"BTCOEXSCAN-STOP", 15, bes2600_op_default_handler},
|
|
|
|
|
{"SETSUSPENDMODE", 14, bes2600_op_default_handler},
|
|
|
|
|
{"COUNTRY", 7, bes2600_op_default_handler},
|
|
|
|
|
{"WIFI_ON", 7, bes2600_op_wifi_bt_on_off},
|
|
|
|
|
{"WIFI_OFF", 8, bes2600_op_wifi_bt_on_off},
|
|
|
|
|
{"BT_ON", 5, bes2600_op_wifi_bt_on_off},
|
|
|
|
|
{"BT_OFF", 6, bes2600_op_wifi_bt_on_off},
|
|
|
|
|
{"CHANGE_FW_TYPE", 14, bes2600_op_change_fw_type},
|
|
|
|
|
{"BT_WAKEUP", 9, bes2600_op_bt_wakeup},
|
|
|
|
|
{"BT_SLEEP", 8, bes2600_op_bt_sleep},
|
|
|
|
|
{"WAKEUP_STATE", 12, bes2600_op_set_wakeup_read_flag},
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static int bes2600_chrdev_check_system_close_internal(void)
|
|
|
|
|
{
|
|
|
|
@@ -603,123 +264,10 @@ static int bes2600_chrdev_check_system_close_internal(void)
|
|
|
|
|
&& (bes2600_cdev.wifi_opened == false);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int bes2600_chrdev_open(struct inode *inode, struct file *filp)
|
|
|
|
|
{
|
|
|
|
|
if (atomic_read(&bes2600_cdev.num_proc) > 0) {
|
|
|
|
|
wait_event_timeout(bes2600_cdev.open_wq,
|
|
|
|
|
(atomic_read(&bes2600_cdev.num_proc) == 0),
|
|
|
|
|
MAX_SCHEDULE_TIMEOUT);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bes_devel("bes2600 char device is opened\n");
|
|
|
|
|
atomic_inc(&bes2600_cdev.num_proc);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static ssize_t bes2600_chrdev_read(struct file *file, char __user *user_buf,
|
|
|
|
|
size_t count, loff_t *ppos)
|
|
|
|
|
{
|
|
|
|
|
char buf[64] = {0};
|
|
|
|
|
unsigned int len;
|
|
|
|
|
long status = 0;
|
|
|
|
|
|
|
|
|
|
switch (bes2600_cdev.read_flag) {
|
|
|
|
|
case BES_CDEV_READ_WAKEUP_STATE:
|
|
|
|
|
if (bes2600_chrdev_wakeup_by_event_get() > WAKEUP_EVENT_NONE) {
|
|
|
|
|
status = wait_event_timeout(bes2600_cdev.wakeup_reason_wq,
|
|
|
|
|
bes2600_chrdev_wakeup_by_event_get() == WAKEUP_EVENT_NONE, HZ * 2);
|
|
|
|
|
WARN_ON(status <= 0);
|
|
|
|
|
}
|
|
|
|
|
len = sprintf(buf, "wakeup_reason: %u, src_port: %u\n",
|
|
|
|
|
bes2600_cdev.wakeup_state, bes2600_cdev.src_port);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
len = sprintf(buf, "dpd_calied:%d wifi_opened:%d bt_opened:%d fw_type:%d\n",
|
|
|
|
|
bes2600_cdev.dpd_calied,
|
|
|
|
|
bes2600_cdev.wifi_opened,
|
|
|
|
|
bes2600_cdev.bt_opened,
|
|
|
|
|
bes2600_cdev.fw_type);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
len = sizeof(buf);
|
|
|
|
|
/* reset read flag */
|
|
|
|
|
spin_lock(&bes2600_cdev.status_lock);
|
|
|
|
|
bes2600_cdev.read_flag = BES_CDEV_READ_NUM_MAX;
|
|
|
|
|
spin_unlock(&bes2600_cdev.status_lock);
|
|
|
|
|
|
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static ssize_t bes2600_chrdev_write(struct file *file,
|
|
|
|
|
const char __user *user_buf, size_t count, loff_t *ppos)
|
|
|
|
|
{
|
|
|
|
|
int i = 0;
|
|
|
|
|
int cmd_num = ARRAY_SIZE(bes2600_op_map_tab);
|
|
|
|
|
int cmd_len = 0;
|
|
|
|
|
int ret = 0;
|
|
|
|
|
char *info[2] = {0};
|
|
|
|
|
char *buf = NULL;
|
|
|
|
|
|
|
|
|
|
/* copy content from user space to kernel */
|
|
|
|
|
/* message format:"ifname:wlanx cmd:xxx arg1 arg2 ..." */
|
|
|
|
|
buf = kmalloc(count + 1, GFP_KERNEL);
|
|
|
|
|
if (copy_from_user(buf, user_buf, count))
|
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
|
|
/* add terminal character */
|
|
|
|
|
buf[count] = '\0';
|
|
|
|
|
|
|
|
|
|
/* extract comand and interface */
|
|
|
|
|
if (bes2600_get_cmd_and_ifname(buf, info) != 0) {
|
|
|
|
|
bes_err("%s get command fail, the origin string is %s\n", __func__, buf);
|
|
|
|
|
kfree(buf);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* match operation item and execure its handler */
|
|
|
|
|
cmd_len = strlen(info[1]);
|
|
|
|
|
for (i = 0; i < cmd_num; i++) {
|
|
|
|
|
if (cmd_len < bes2600_op_map_tab[i].op_len)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
if (strncasecmp(info[1], bes2600_op_map_tab[i].op, bes2600_op_map_tab[i].op_len) == 0) {
|
|
|
|
|
ret = bes2600_op_map_tab[i].handler(buf);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* operation item mismatch */
|
|
|
|
|
if (i == cmd_num) {
|
|
|
|
|
bes_err("cmd(%s) mismatch\n", info[1]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bes2600_recyle_cmd_and_ifname_mem(info);
|
|
|
|
|
kfree(buf);
|
|
|
|
|
|
|
|
|
|
return (ret == 0) ? count : ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int bes2600_chrdev_release (struct inode *inode, struct file *file)
|
|
|
|
|
{
|
|
|
|
|
if (atomic_dec_and_test(&bes2600_cdev.num_proc)) {
|
|
|
|
|
wake_up(&bes2600_cdev.open_wq);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bes_devel("bes2600 char device is closed\n");
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct file_operations bes2600_chardev_fops =
|
|
|
|
|
{
|
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
|
.open = bes2600_chrdev_open,
|
|
|
|
|
.read = bes2600_chrdev_read,
|
|
|
|
|
.write = bes2600_chrdev_write,
|
|
|
|
|
.release = bes2600_chrdev_release,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#ifdef BES2600_WRITE_DPD_TO_FILE
|
|
|
|
|
static int bes2600_chrdev_write_dpd_data_to_file(const char *path, void *buffer, int size)
|
|
|
|
@@ -1124,12 +672,6 @@ void bes2600_chrdev_update_signal_mode(void)
|
|
|
|
|
|
|
|
|
|
static void bes2600_chrdev_wifi_force_close_work(struct work_struct *work)
|
|
|
|
|
{
|
|
|
|
|
char wifi_state[15];
|
|
|
|
|
char bt_state[15];
|
|
|
|
|
char fw_type[15];
|
|
|
|
|
char *env[] = { wifi_state, bt_state, fw_type, NULL };
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
if (bes2600_chrdev_is_wifi_opened()) {
|
|
|
|
|
bes_devel("system exeception, force wifi down\n");
|
|
|
|
|
|
|
|
|
@@ -1146,14 +688,6 @@ static void bes2600_chrdev_wifi_force_close_work(struct work_struct *work)
|
|
|
|
|
bes2600_chrdev_do_system_close(bes2600_cdev.sbus_ops,
|
|
|
|
|
bes2600_cdev.sbus_priv);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* notify userspace */
|
|
|
|
|
snprintf(wifi_state, sizeof(wifi_state), "WIFI_OPENED=%d", bes2600_cdev.wifi_opened);
|
|
|
|
|
snprintf(bt_state, sizeof(bt_state), "BT_OPENED=%d", bes2600_cdev.bt_opened);
|
|
|
|
|
snprintf(fw_type, sizeof(fw_type), "FW_TYPE=%d", bes2600_cdev.fw_type);
|
|
|
|
|
ret = kobject_uevent_env(&bes2600_cdev.device->kobj, KOBJ_CHANGE, env);
|
|
|
|
|
if (!ret)
|
|
|
|
|
bes_err("bes2600 notify userspace failed\n");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@@ -1247,46 +781,6 @@ int bes2600_chrdev_wakeup_by_event_get(void)
|
|
|
|
|
|
|
|
|
|
int bes2600_chrdev_init(struct sbus_ops *ops)
|
|
|
|
|
{
|
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
|
|
/* allocate devide id */
|
|
|
|
|
ret = alloc_chrdev_region(&bes2600_cdev.dev_id, 0, 1, "bes2600_chrdev");
|
|
|
|
|
if (ret < 0){
|
|
|
|
|
bes_err("bes2600 alloc device id fail\n");
|
|
|
|
|
ret = -EFAULT;
|
|
|
|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* extract major and minor device id */
|
|
|
|
|
bes2600_cdev.major = MAJOR(bes2600_cdev.dev_id);
|
|
|
|
|
bes2600_cdev.minor = MINOR(bes2600_cdev.dev_id);
|
|
|
|
|
|
|
|
|
|
/* add char device and bind operation function */
|
|
|
|
|
bes2600_cdev.cdev.owner = THIS_MODULE;
|
|
|
|
|
cdev_init(&bes2600_cdev.cdev, &bes2600_chardev_fops);
|
|
|
|
|
ret = cdev_add(&bes2600_cdev.cdev, bes2600_cdev.dev_id, 1);
|
|
|
|
|
if (ret < 0){
|
|
|
|
|
bes_err("bes2600 char device add fail\n");
|
|
|
|
|
ret = -EFAULT;
|
|
|
|
|
goto fail1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* create class for creating device node */
|
|
|
|
|
bes2600_cdev.class = class_create("bes2600_chrdev");
|
|
|
|
|
if (IS_ERR(bes2600_cdev.class)){
|
|
|
|
|
bes_err("bes2600 char device add fail\n");
|
|
|
|
|
ret = -EFAULT;
|
|
|
|
|
goto fail2;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* get char device pointer */
|
|
|
|
|
bes2600_cdev.device = device_create(bes2600_cdev.class, NULL, bes2600_cdev.dev_id, NULL, "bes2600");
|
|
|
|
|
if (IS_ERR(bes2600_cdev.device)){
|
|
|
|
|
bes_err("bes2600 char device create fail\n");
|
|
|
|
|
ret = -EFAULT;
|
|
|
|
|
goto fail3;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* initialise global variable */
|
|
|
|
|
atomic_set(&bes2600_cdev.num_proc, 0);
|
|
|
|
|
init_waitqueue_head(&bes2600_cdev.open_wq);
|
|
|
|
@@ -1318,15 +812,6 @@ int bes2600_chrdev_init(struct sbus_ops *ops)
|
|
|
|
|
bes_devel("%s done\n", __func__);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
fail3:
|
|
|
|
|
class_destroy(bes2600_cdev.class);
|
|
|
|
|
fail2:
|
|
|
|
|
cdev_del(&bes2600_cdev.cdev);
|
|
|
|
|
fail1:
|
|
|
|
|
unregister_chrdev_region(bes2600_cdev.dev_id, 1);
|
|
|
|
|
fail:
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void bes2600_chrdev_free(void)
|
|
|
|
@@ -1336,9 +821,5 @@ void bes2600_chrdev_free(void)
|
|
|
|
|
bes2600_free_dpd_log_buffer();
|
|
|
|
|
#endif
|
|
|
|
|
bes2600_chrdev_free_dpd_data();
|
|
|
|
|
cdev_del(&bes2600_cdev.cdev);
|
|
|
|
|
unregister_chrdev_region(bes2600_cdev.dev_id, 1);
|
|
|
|
|
device_destroy(bes2600_cdev.class, bes2600_cdev.dev_id);
|
|
|
|
|
class_destroy(bes2600_cdev.class);
|
|
|
|
|
bes_devel("%s done\n", __func__);
|
|
|
|
|
}
|
|
|
|
|