1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2024 Intel Corporation
4 */
5 #include <linux/leds.h>
6 #include <net/mac80211.h>
7
8 #include "fw/api/led.h"
9 #include "mld.h"
10 #include "led.h"
11 #include "hcmd.h"
12
iwl_mld_send_led_fw_cmd(struct iwl_mld * mld,bool on)13 static void iwl_mld_send_led_fw_cmd(struct iwl_mld *mld, bool on)
14 {
15 struct iwl_led_cmd led_cmd = {
16 .status = cpu_to_le32(on),
17 };
18 int err;
19
20 if (WARN_ON(!mld->fw_status.running))
21 return;
22
23 err = iwl_mld_send_cmd_with_flags_pdu(mld, WIDE_ID(LONG_GROUP,
24 LEDS_CMD),
25 CMD_ASYNC, &led_cmd);
26
27 if (err)
28 IWL_WARN(mld, "LED command failed: %d\n", err);
29 }
30
iwl_led_brightness_set(struct led_classdev * led_cdev,enum led_brightness brightness)31 static void iwl_led_brightness_set(struct led_classdev *led_cdev,
32 enum led_brightness brightness)
33 {
34 struct iwl_mld *mld = container_of(led_cdev, struct iwl_mld, led);
35
36 if (!mld->fw_status.running)
37 return;
38
39 iwl_mld_send_led_fw_cmd(mld, brightness > 0);
40 }
41
iwl_mld_leds_init(struct iwl_mld * mld)42 int iwl_mld_leds_init(struct iwl_mld *mld)
43 {
44 int mode = iwlwifi_mod_params.led_mode;
45 int ret;
46
47 switch (mode) {
48 case IWL_LED_BLINK:
49 IWL_ERR(mld, "Blink led mode not supported, used default\n");
50 fallthrough;
51 case IWL_LED_DEFAULT:
52 case IWL_LED_RF_STATE:
53 mode = IWL_LED_RF_STATE;
54 break;
55 case IWL_LED_DISABLE:
56 IWL_INFO(mld, "Led disabled\n");
57 return 0;
58 default:
59 return -EINVAL;
60 }
61
62 mld->led.name = kasprintf(GFP_KERNEL, "%s-led",
63 wiphy_name(mld->hw->wiphy));
64 if (!mld->led.name)
65 return -ENOMEM;
66
67 mld->led.brightness_set = iwl_led_brightness_set;
68 mld->led.max_brightness = 1;
69
70 if (mode == IWL_LED_RF_STATE)
71 mld->led.default_trigger =
72 ieee80211_get_radio_led_name(mld->hw);
73
74 ret = led_classdev_register(mld->trans->dev, &mld->led);
75 if (ret) {
76 kfree(mld->led.name);
77 mld->led.name = NULL;
78 IWL_INFO(mld, "Failed to enable led\n");
79 }
80
81 return ret;
82 }
83
iwl_mld_led_config_fw(struct iwl_mld * mld)84 void iwl_mld_led_config_fw(struct iwl_mld *mld)
85 {
86 if (!mld->led.name)
87 return;
88
89 iwl_mld_send_led_fw_cmd(mld, mld->led.brightness > 0);
90 }
91
iwl_mld_leds_exit(struct iwl_mld * mld)92 void iwl_mld_leds_exit(struct iwl_mld *mld)
93 {
94 if (!mld->led.name)
95 return;
96
97 led_classdev_unregister(&mld->led);
98 kfree(mld->led.name);
99 mld->led.name = NULL;
100 }
101