iwlwifi: mvm: add debugfs entry to read the current temperature
When read, this new debugfs entry requests the current temperature from the firmware and outputs it. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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@ -326,6 +326,29 @@ out:
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return count;
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}
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static ssize_t iwl_dbgfs_nic_temp_read(struct file *file,
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char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct iwl_mvm *mvm = file->private_data;
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char buf[16];
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int pos, temp;
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if (!mvm->ucode_loaded)
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return -EIO;
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mutex_lock(&mvm->mutex);
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temp = iwl_mvm_get_temp(mvm);
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mutex_unlock(&mvm->mutex);
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if (temp < 0)
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return temp;
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pos = scnprintf(buf , sizeof(buf), "%d\n", temp);
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return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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}
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static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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@ -1378,6 +1401,7 @@ MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
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MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
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MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
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MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);
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MVM_DEBUGFS_READ_FILE_OPS(nic_temp);
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MVM_DEBUGFS_READ_FILE_OPS(stations);
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MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
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MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
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@ -1420,6 +1444,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
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MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
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MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir,
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S_IWUSR | S_IRUSR);
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MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, S_IRUSR);
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MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
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MVM_DEBUGFS_ADD_FILE(fw_error_dump, dbgfs_dir, S_IRUSR);
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MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
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@ -1188,6 +1188,7 @@ void iwl_mvm_tt_handler(struct iwl_mvm *mvm);
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void iwl_mvm_tt_initialize(struct iwl_mvm *mvm, u32 min_backoff);
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void iwl_mvm_tt_exit(struct iwl_mvm *mvm);
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void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state);
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int iwl_mvm_get_temp(struct iwl_mvm *mvm);
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/* smart fifo */
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int iwl_mvm_sf_update(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
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@ -135,7 +135,7 @@ static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm)
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sizeof(cmd), &cmd);
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}
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static int iwl_mvm_get_temp(struct iwl_mvm *mvm)
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int iwl_mvm_get_temp(struct iwl_mvm *mvm)
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{
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struct iwl_notification_wait wait_temp_notif;
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static const u8 temp_notif[] = { DTS_MEASUREMENT_NOTIFICATION };
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