1 files changed, 136 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/led.c b/drivers/net/wireless/intel/iwlwifi/mvm/led.c
new file mode 100644
index 000000000000..e3b3cf4dbd77
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/led.c
@@ -0,0 +1,136 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+#include <linux/leds.h>
+#include "iwl-io.h"
+#include "iwl-csr.h"
+#include "mvm.h"
+
+/* Set led register on */
+static void iwl_mvm_led_enable(struct iwl_mvm *mvm)
+{
+        iwl_write32(mvm->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON);
+}
+
+/* Set led register off */
+static void iwl_mvm_led_disable(struct iwl_mvm *mvm)
+{
+        iwl_write32(mvm->trans, CSR_LED_REG, CSR_LED_REG_TURN_OFF);
+}
+
+static void iwl_led_brightness_set(struct led_classdev *led_cdev,
+                                   enum led_brightness brightness)
+{
+        struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led);
+        if (brightness > 0)
+                iwl_mvm_led_enable(mvm);
+        else
+                iwl_mvm_led_disable(mvm);
+}
+
+int iwl_mvm_leds_init(struct iwl_mvm *mvm)
+{
+        int mode = iwlwifi_mod_params.led_mode;
+        int ret;
+
+        switch (mode) {
+        case IWL_LED_BLINK:
+                IWL_ERR(mvm, "Blink led mode not supported, used default\n");
+        case IWL_LED_DEFAULT:
+        case IWL_LED_RF_STATE:
+                mode = IWL_LED_RF_STATE;
+                break;
+        case IWL_LED_DISABLE:
+                IWL_INFO(mvm, "Led disabled\n");
+                return 0;
+        default:
+                return -EINVAL;
+        }
+
+        mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
+                                   wiphy_name(mvm->hw->wiphy));
+        mvm->led.brightness_set = iwl_led_brightness_set;
+        mvm->led.max_brightness = 1;
+
+        if (mode == IWL_LED_RF_STATE)
+                mvm->led.default_trigger =
+                        ieee80211_get_radio_led_name(mvm->hw);
+
+        ret = led_classdev_register(mvm->trans->dev, &mvm->led);
+        if (ret) {
+                kfree(mvm->led.name);
+                IWL_INFO(mvm, "Failed to enable led\n");
+                return ret;
+        }
+
+        return 0;
+}
+
+void iwl_mvm_leds_exit(struct iwl_mvm *mvm)
+{
+        if (iwlwifi_mod_params.led_mode == IWL_LED_DISABLE)
+                return;
+
+        led_classdev_unregister(&mvm->led);
+        kfree(mvm->led.name);
+}