From c549e3903a3be964b58449140d4f87f2132b55c2 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Thu, 4 Sep 2014 15:58:47 +0300 Subject: [PATCH] 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 Reviewed-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/debugfs.c | 25 ++++++++++++++++++++++ drivers/net/wireless/iwlwifi/mvm/mvm.h | 1 + drivers/net/wireless/iwlwifi/mvm/tt.c | 2 +- 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c index 95eb9a5ef693..50527a9bb267 100644 --- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c @@ -326,6 +326,29 @@ out: return count; } +static ssize_t iwl_dbgfs_nic_temp_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + char buf[16]; + int pos, temp; + + if (!mvm->ucode_loaded) + return -EIO; + + mutex_lock(&mvm->mutex); + temp = iwl_mvm_get_temp(mvm); + mutex_unlock(&mvm->mutex); + + if (temp < 0) + return temp; + + pos = scnprintf(buf , sizeof(buf), "%d\n", temp); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -1378,6 +1401,7 @@ MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16); MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8); MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64); MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64); +MVM_DEBUGFS_READ_FILE_OPS(nic_temp); MVM_DEBUGFS_READ_FILE_OPS(stations); MVM_DEBUGFS_READ_FILE_OPS(bt_notif); MVM_DEBUGFS_READ_FILE_OPS(bt_cmd); @@ -1420,6 +1444,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR); MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir, S_IWUSR | S_IRUSR); + MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(fw_error_dump, dbgfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR); diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 8eacebb90f23..c913d5e80c9d 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -1188,6 +1188,7 @@ void iwl_mvm_tt_handler(struct iwl_mvm *mvm); void iwl_mvm_tt_initialize(struct iwl_mvm *mvm, u32 min_backoff); void iwl_mvm_tt_exit(struct iwl_mvm *mvm); void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state); +int iwl_mvm_get_temp(struct iwl_mvm *mvm); /* smart fifo */ int iwl_mvm_sf_update(struct iwl_mvm *mvm, struct ieee80211_vif *vif, diff --git a/drivers/net/wireless/iwlwifi/mvm/tt.c b/drivers/net/wireless/iwlwifi/mvm/tt.c index c750ca7b8269..acca44a45086 100644 --- a/drivers/net/wireless/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/iwlwifi/mvm/tt.c @@ -135,7 +135,7 @@ static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm) sizeof(cmd), &cmd); } -static int iwl_mvm_get_temp(struct iwl_mvm *mvm) +int iwl_mvm_get_temp(struct iwl_mvm *mvm) { struct iwl_notification_wait wait_temp_notif; static const u8 temp_notif[] = { DTS_MEASUREMENT_NOTIFICATION }; -- 2.20.1