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 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 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 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 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 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