1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2017 Intel Deutschland GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2017 Intel Deutschland GmbH
36 * All rights reserved.
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39 * modification, are permitted provided that the following conditions
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64 *****************************************************************************/
66 #include <linux/leds.h>
71 static void iwl_mvm_send_led_fw_cmd(struct iwl_mvm *mvm, bool on)
73 struct iwl_led_cmd led_cmd = {
74 .status = cpu_to_le32(on),
76 struct iwl_host_cmd cmd = {
77 .id = WIDE_ID(LONG_GROUP, LEDS_CMD),
78 .len = { sizeof(led_cmd), },
79 .data = { &led_cmd, },
84 if (!iwl_mvm_firmware_running(mvm))
87 err = iwl_mvm_send_cmd(mvm, &cmd);
90 IWL_WARN(mvm, "LED command failed: %d\n", err);
93 static void iwl_mvm_led_set(struct iwl_mvm *mvm, bool on)
95 if (fw_has_capa(&mvm->fw->ucode_capa,
96 IWL_UCODE_TLV_CAPA_LED_CMD_SUPPORT)) {
97 iwl_mvm_send_led_fw_cmd(mvm, on);
101 iwl_write32(mvm->trans, CSR_LED_REG,
102 on ? CSR_LED_REG_TURN_ON : CSR_LED_REG_TURN_OFF);
105 static void iwl_led_brightness_set(struct led_classdev *led_cdev,
106 enum led_brightness brightness)
108 struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led);
110 iwl_mvm_led_set(mvm, brightness > 0);
113 int iwl_mvm_leds_init(struct iwl_mvm *mvm)
115 int mode = iwlwifi_mod_params.led_mode;
120 IWL_ERR(mvm, "Blink led mode not supported, used default\n");
121 case IWL_LED_DEFAULT:
122 case IWL_LED_RF_STATE:
123 mode = IWL_LED_RF_STATE;
125 case IWL_LED_DISABLE:
126 IWL_INFO(mvm, "Led disabled\n");
132 mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
133 wiphy_name(mvm->hw->wiphy));
137 mvm->led.brightness_set = iwl_led_brightness_set;
138 mvm->led.max_brightness = 1;
140 if (mode == IWL_LED_RF_STATE)
141 mvm->led.default_trigger =
142 ieee80211_get_radio_led_name(mvm->hw);
144 ret = led_classdev_register(mvm->trans->dev, &mvm->led);
146 kfree(mvm->led.name);
147 IWL_INFO(mvm, "Failed to enable led\n");
151 mvm->init_status |= IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
155 void iwl_mvm_leds_sync(struct iwl_mvm *mvm)
157 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
161 * if we control through the register, we're doing it
162 * even when the firmware isn't up, so no need to sync
164 if (mvm->cfg->device_family < IWL_DEVICE_FAMILY_8000)
167 iwl_mvm_led_set(mvm, mvm->led.brightness > 0);
170 void iwl_mvm_leds_exit(struct iwl_mvm *mvm)
172 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
175 led_classdev_unregister(&mvm->led);
176 kfree(mvm->led.name);
177 mvm->init_status &= ~IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;