drivers/net/wireless/realtek/rtlwifi/rtl8192cu/led.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * The full GNU General Public License is included in this distribution in the
  15  * file called LICENSE.
  16  *
  17  * Contact Information:
  18  * wlanfae <wlanfae@realtek.com>
  19  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  20  * Hsinchu 300, Taiwan.
  21  *
  22  *****************************************************************************/
  23
  24 #include "../wifi.h"
  25 #include "../usb.h"
  26 #include "reg.h"
  27 #include "led.h"
  28
  29 static void _rtl92cu_init_led(struct ieee80211_hw *hw,
  30                               struct rtl_led *pled, enum rtl_led_pin ledpin)
  31 {
  32         pled->hw = hw;
  33         pled->ledpin = ledpin;
  34         pled->ledon = false;
  35 }
  36
  37 static void _rtl92cu_deInit_led(struct rtl_led *pled)
  38 {
  39 }
  40
  41 void rtl92cu_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  42 {
  43         u8 ledcfg;
  44         struct rtl_priv *rtlpriv = rtl_priv(hw);
  45
  46         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  47                  REG_LEDCFG2, pled->ledpin);
  48         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  49         switch (pled->ledpin) {
  50         case LED_PIN_GPIO0:
  51                 break;
  52         case LED_PIN_LED0:
  53                 rtl_write_byte(rtlpriv,
  54                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
  55                 break;
  56         case LED_PIN_LED1:
  57                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  58                 break;
  59         default:
  60                 pr_err("switch case %#x not processed\n",
  61                        pled->ledpin);
  62                 break;
  63         }
  64         pled->ledon = true;
  65 }
  66
  67 void rtl92cu_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  68 {
  69         struct rtl_priv *rtlpriv = rtl_priv(hw);
  70         u8 ledcfg;
  71
  72         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  73                  REG_LEDCFG2, pled->ledpin);
  74         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  75         switch (pled->ledpin) {
  76         case LED_PIN_GPIO0:
  77                 break;
  78         case LED_PIN_LED0:
  79                 ledcfg &= 0xf0;
  80                 if (rtlpriv->ledctl.led_opendrain)
  81                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  82                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  83                 else
  84                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  85                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  86                 break;
  87         case LED_PIN_LED1:
  88                 ledcfg &= 0x0f;
  89                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
  90                 break;
  91         default:
  92                 pr_err("switch case %#x not processed\n",
  93                        pled->ledpin);
  94                 break;
  95         }
  96         pled->ledon = false;
  97 }
  98
  99 void rtl92cu_init_sw_leds(struct ieee80211_hw *hw)
 100 {
 101         struct rtl_priv *rtlpriv = rtl_priv(hw);
 102
 103         _rtl92cu_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 104         _rtl92cu_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 105 }
 106
 107 void rtl92cu_deinit_sw_leds(struct ieee80211_hw *hw)
 108 {
 109         struct rtl_priv *rtlpriv = rtl_priv(hw);
 110
 111         _rtl92cu_deInit_led(&rtlpriv->ledctl.sw_led0);
 112         _rtl92cu_deInit_led(&rtlpriv->ledctl.sw_led1);
 113 }
 114
 115 static void _rtl92cu_sw_led_control(struct ieee80211_hw *hw,
 116                                     enum led_ctl_mode ledaction)
 117 {
 118 }
 119
 120 void rtl92cu_led_control(struct ieee80211_hw *hw,
 121                         enum led_ctl_mode ledaction)
 122 {
 123         struct rtl_priv *rtlpriv = rtl_priv(hw);
 124         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 125
 126         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 127             (ledaction == LED_CTL_TX ||
 128              ledaction == LED_CTL_RX ||
 129              ledaction == LED_CTL_SITE_SURVEY ||
 130              ledaction == LED_CTL_LINK ||
 131              ledaction == LED_CTL_NO_LINK ||
 132              ledaction == LED_CTL_START_TO_LINK ||
 133              ledaction == LED_CTL_POWER_ON)) {
 134                 return;
 135         }
 136         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n", ledaction);
 137         _rtl92cu_sw_led_control(hw, ledaction);
 138 }