projects / linux-block.git / blame
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|---|---|---|
| 8ca151b5 JB |
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 - 2013 Intel Corporation. All rights reserved. | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of version 2 of the GNU General Public License as | |
| 12 | * published by the Free Software Foundation. | |
| 13 | * | |
| 14 | * This program is distributed in the hope that it will be useful, but | |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 | * General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License | |
| 20 | * along with this program; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
| 22 | * USA | |
| 23 | * | |
| 24 | * The full GNU General Public License is included in this distribution | |
| 410dc5aa | 25 | * in the file called COPYING. |
| 8ca151b5 JB |
26 | * |
| 27 | * Contact Information: | |
| 28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
| 29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
| 30 | * | |
| 31 | * BSD LICENSE | |
| 32 | * | |
| 33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
| 34 | * All rights reserved. | |
| 35 | * | |
| 36 | * Redistribution and use in source and binary forms, with or without | |
| 37 | * modification, are permitted provided that the following conditions | |
| 38 | * are met: | |
| 39 | * | |
| 40 | * * Redistributions of source code must retain the above copyright | |
| 41 | * notice, this list of conditions and the following disclaimer. | |
| 42 | * * Redistributions in binary form must reproduce the above copyright | |
| 43 | * notice, this list of conditions and the following disclaimer in | |
| 44 | * the documentation and/or other materials provided with the | |
| 45 | * distribution. | |
| 46 | * * Neither the name Intel Corporation nor the names of its | |
| 47 | * contributors may be used to endorse or promote products derived | |
| 48 | * from this software without specific prior written permission. | |
| 49 | * | |
| 50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 61 | * | |
| 62 | *****************************************************************************/ | |
| 63 | ||
| 64 | #include <linux/leds.h> | |
| 65 | #include "iwl-io.h" | |
| 66 | #include "iwl-csr.h" | |
| 67 | #include "mvm.h" | |
| 68 | ||
| 69 | /* Set led register on */ | |
| 70 | static void iwl_mvm_led_enable(struct iwl_mvm *mvm) | |
| 71 | { | |
| 72 | iwl_write32(mvm->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON); | |
| 73 | } | |
| 74 | ||
| 75 | /* Set led register off */ | |
| 76 | static void iwl_mvm_led_disable(struct iwl_mvm *mvm) | |
| 77 | { | |
| 78 | iwl_write32(mvm->trans, CSR_LED_REG, CSR_LED_REG_TURN_OFF); | |
| 79 | } | |
| 80 | ||
| 81 | static void iwl_led_brightness_set(struct led_classdev *led_cdev, | |
| 82 | enum led_brightness brightness) | |
| 83 | { | |
| 84 | struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led); | |
| 85 | if (brightness > 0) | |
| 86 | iwl_mvm_led_enable(mvm); | |
| 87 | else | |
| 88 | iwl_mvm_led_disable(mvm); | |
| 89 | } | |
| 90 | ||
| 91 | int iwl_mvm_leds_init(struct iwl_mvm *mvm) | |
| 92 | { | |
| 93 | int mode = iwlwifi_mod_params.led_mode; | |
| 94 | int ret; | |
| 95 | ||
| 96 | switch (mode) { | |
| 97 | case IWL_LED_DEFAULT: | |
| 98 | case IWL_LED_RF_STATE: | |
| 99 | mode = IWL_LED_RF_STATE; | |
| 100 | break; | |
| 101 | case IWL_LED_DISABLE: | |
| 102 | IWL_INFO(mvm, "Led disabled\n"); | |
| 103 | return 0; | |
| 104 | default: | |
| 105 | return -EINVAL; | |
| 106 | }; | |
| 107 | ||
| 108 | mvm->led.name = kasprintf(GFP_KERNEL, "%s-led", | |
| 109 | wiphy_name(mvm->hw->wiphy)); | |
| 110 | mvm->led.brightness_set = iwl_led_brightness_set; | |
| 111 | mvm->led.max_brightness = 1; | |
| 112 | ||
| 113 | if (mode == IWL_LED_RF_STATE) | |
| 114 | mvm->led.default_trigger = | |
| 115 | ieee80211_get_radio_led_name(mvm->hw); | |
| 116 | ||
| 117 | ret = led_classdev_register(mvm->trans->dev, &mvm->led); | |
| 118 | if (ret) { | |
| 119 | kfree(mvm->led.name); | |
| 120 | IWL_INFO(mvm, "Failed to enable led\n"); | |
| 121 | return ret; | |
| 122 | } | |
| 123 | ||
| 124 | return 0; | |
| 125 | } | |
| 126 | ||
| 127 | void iwl_mvm_leds_exit(struct iwl_mvm *mvm) | |
| 128 | { | |
| 129 | if (iwlwifi_mod_params.led_mode == IWL_LED_DISABLE) | |
| 130 | return; | |
| 131 | ||
| 132 | led_classdev_unregister(&mvm->led); | |
| 133 | kfree(mvm->led.name); | |
| 134 | } |