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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2019 Intel Corporation
4 * Copyright (C) 2017 Intel Deutschland GmbH
5 */
6#include <linux/leds.h>
7#include "iwl-io.h"
8#include "iwl-csr.h"
9#include "mvm.h"
10
11static void iwl_mvm_send_led_fw_cmd(struct iwl_mvm *mvm, bool on)
12{
13 struct iwl_led_cmd led_cmd = {
14 .status = cpu_to_le32(on),
15 };
16 struct iwl_host_cmd cmd = {
17 .id = WIDE_ID(LONG_GROUP, LEDS_CMD),
18 .len = { sizeof(led_cmd), },
19 .data = { &led_cmd, },
20 .flags = CMD_ASYNC,
21 };
22 int err;
23
24 if (!iwl_mvm_firmware_running(mvm))
25 return;
26
27 err = iwl_mvm_send_cmd(mvm, &cmd);
28
29 if (err)
30 IWL_WARN(mvm, "LED command failed: %d\n", err);
31}
32
33static void iwl_mvm_led_set(struct iwl_mvm *mvm, bool on)
34{
35 if (fw_has_capa(&mvm->fw->ucode_capa,
36 IWL_UCODE_TLV_CAPA_LED_CMD_SUPPORT)) {
37 iwl_mvm_send_led_fw_cmd(mvm, on);
38 return;
39 }
40
41 iwl_write32(mvm->trans, CSR_LED_REG,
42 on ? CSR_LED_REG_TURN_ON : CSR_LED_REG_TURN_OFF);
43}
44
45static void iwl_led_brightness_set(struct led_classdev *led_cdev,
46 enum led_brightness brightness)
47{
48 struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led);
49
50 iwl_mvm_led_set(mvm, brightness > 0);
51}
52
53int iwl_mvm_leds_init(struct iwl_mvm *mvm)
54{
55 int mode = iwlwifi_mod_params.led_mode;
56 int ret;
57
58 switch (mode) {
59 case IWL_LED_BLINK:
60 IWL_ERR(mvm, "Blink led mode not supported, used default\n");
61 fallthrough;
62 case IWL_LED_DEFAULT:
63 case IWL_LED_RF_STATE:
64 mode = IWL_LED_RF_STATE;
65 break;
66 case IWL_LED_DISABLE:
67 IWL_INFO(mvm, "Led disabled\n");
68 return 0;
69 default:
70 return -EINVAL;
71 }
72
73 mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
74 wiphy_name(mvm->hw->wiphy));
75 if (!mvm->led.name)
76 return -ENOMEM;
77
78 mvm->led.brightness_set = iwl_led_brightness_set;
79 mvm->led.max_brightness = 1;
80
81 if (mode == IWL_LED_RF_STATE)
82 mvm->led.default_trigger =
83 ieee80211_get_radio_led_name(mvm->hw);
84
85 ret = led_classdev_register(mvm->trans->dev, &mvm->led);
86 if (ret) {
87 kfree(mvm->led.name);
88 IWL_INFO(mvm, "Failed to enable led\n");
89 return ret;
90 }
91
92 mvm->init_status |= IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
93 return 0;
94}
95
96void iwl_mvm_leds_sync(struct iwl_mvm *mvm)
97{
98 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
99 return;
100
101 /*
102 * if we control through the register, we're doing it
103 * even when the firmware isn't up, so no need to sync
104 */
105 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000)
106 return;
107
108 iwl_mvm_led_set(mvm, mvm->led.brightness > 0);
109}
110
111void iwl_mvm_leds_exit(struct iwl_mvm *mvm)
112{
113 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
114 return;
115
116 led_classdev_unregister(&mvm->led);
117 kfree(mvm->led.name);
118 mvm->init_status &= ~IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
119}
1/******************************************************************************
2 *
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.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2017 Intel Deutschland GmbH
10 *
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.
14 *
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.
19 *
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,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2017 Intel Deutschland GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65
66#include <linux/leds.h>
67#include "iwl-io.h"
68#include "iwl-csr.h"
69#include "mvm.h"
70
71static void iwl_mvm_send_led_fw_cmd(struct iwl_mvm *mvm, bool on)
72{
73 struct iwl_led_cmd led_cmd = {
74 .status = cpu_to_le32(on),
75 };
76 struct iwl_host_cmd cmd = {
77 .id = WIDE_ID(LONG_GROUP, LEDS_CMD),
78 .len = { sizeof(led_cmd), },
79 .data = { &led_cmd, },
80 .flags = CMD_ASYNC,
81 };
82 int err;
83
84 if (!iwl_mvm_firmware_running(mvm))
85 return;
86
87 err = iwl_mvm_send_cmd(mvm, &cmd);
88
89 if (err)
90 IWL_WARN(mvm, "LED command failed: %d\n", err);
91}
92
93static void iwl_mvm_led_set(struct iwl_mvm *mvm, bool on)
94{
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);
98 return;
99 }
100
101 iwl_write32(mvm->trans, CSR_LED_REG,
102 on ? CSR_LED_REG_TURN_ON : CSR_LED_REG_TURN_OFF);
103}
104
105static void iwl_led_brightness_set(struct led_classdev *led_cdev,
106 enum led_brightness brightness)
107{
108 struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led);
109
110 iwl_mvm_led_set(mvm, brightness > 0);
111}
112
113int iwl_mvm_leds_init(struct iwl_mvm *mvm)
114{
115 int mode = iwlwifi_mod_params.led_mode;
116 int ret;
117
118 switch (mode) {
119 case IWL_LED_BLINK:
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;
124 break;
125 case IWL_LED_DISABLE:
126 IWL_INFO(mvm, "Led disabled\n");
127 return 0;
128 default:
129 return -EINVAL;
130 }
131
132 mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
133 wiphy_name(mvm->hw->wiphy));
134 mvm->led.brightness_set = iwl_led_brightness_set;
135 mvm->led.max_brightness = 1;
136
137 if (mode == IWL_LED_RF_STATE)
138 mvm->led.default_trigger =
139 ieee80211_get_radio_led_name(mvm->hw);
140
141 ret = led_classdev_register(mvm->trans->dev, &mvm->led);
142 if (ret) {
143 kfree(mvm->led.name);
144 IWL_INFO(mvm, "Failed to enable led\n");
145 return ret;
146 }
147
148 mvm->init_status |= IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
149 return 0;
150}
151
152void iwl_mvm_leds_sync(struct iwl_mvm *mvm)
153{
154 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
155 return;
156
157 /*
158 * if we control through the register, we're doing it
159 * even when the firmware isn't up, so no need to sync
160 */
161 if (mvm->cfg->device_family < IWL_DEVICE_FAMILY_8000)
162 return;
163
164 iwl_mvm_led_set(mvm, mvm->led.brightness > 0);
165}
166
167void iwl_mvm_leds_exit(struct iwl_mvm *mvm)
168{
169 if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
170 return;
171
172 led_classdev_unregister(&mvm->led);
173 kfree(mvm->led.name);
174 mvm->init_status &= ~IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
175}