drivers/net/wireless/realtek/rtlwifi/rtl8192se/led.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation.
   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  * Larry Finger <Larry.Finger@lwfinger.net>
  23  *
  24  *****************************************************************************/
  25
  26 #include "../wifi.h"
  27 #include "../pci.h"
  28 #include "reg.h"
  29 #include "led.h"
  30
  31 static void _rtl92se_init_led(struct ieee80211_hw *hw,
  32                               struct rtl_led *pled, enum rtl_led_pin ledpin)
  33 {
  34         pled->hw = hw;
  35         pled->ledpin = ledpin;
  36         pled->ledon = false;
  37 }
  38
  39 void rtl92se_init_sw_leds(struct ieee80211_hw *hw)
  40 {
  41         struct rtl_priv *rtlpriv = rtl_priv(hw);
  42
  43         _rtl92se_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
  44         _rtl92se_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
  45 }
  46
  47 void rtl92se_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  48 {
  49         u8 ledcfg;
  50         struct rtl_priv *rtlpriv = rtl_priv(hw);
  51
  52         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  53                  LEDCFG, pled->ledpin);
  54
  55         ledcfg = rtl_read_byte(rtlpriv, LEDCFG);
  56
  57         switch (pled->ledpin) {
  58         case LED_PIN_GPIO0:
  59                 break;
  60         case LED_PIN_LED0:
  61                 rtl_write_byte(rtlpriv, LEDCFG, ledcfg & 0xf0);
  62                 break;
  63         case LED_PIN_LED1:
  64                 rtl_write_byte(rtlpriv, LEDCFG, ledcfg & 0x0f);
  65                 break;
  66         default:
  67                 pr_err("switch case %#x not processed\n",
  68                        pled->ledpin);
  69                 break;
  70         }
  71         pled->ledon = true;
  72 }
  73
  74 void rtl92se_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  75 {
  76         struct rtl_priv *rtlpriv;
  77         u8 ledcfg;
  78
  79         rtlpriv = rtl_priv(hw);
  80         if (!rtlpriv || rtlpriv->max_fw_size)
  81                 return;
  82         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  83                  LEDCFG, pled->ledpin);
  84
  85         ledcfg = rtl_read_byte(rtlpriv, LEDCFG);
  86
  87         switch (pled->ledpin) {
  88         case LED_PIN_GPIO0:
  89                 break;
  90         case LED_PIN_LED0:
  91                 ledcfg &= 0xf0;
  92                 if (rtlpriv->ledctl.led_opendrain)
  93                         rtl_write_byte(rtlpriv, LEDCFG, (ledcfg | BIT(1)));
  94                 else
  95                         rtl_write_byte(rtlpriv, LEDCFG, (ledcfg | BIT(3)));
  96                 break;
  97         case LED_PIN_LED1:
  98                 ledcfg &= 0x0f;
  99                 rtl_write_byte(rtlpriv, LEDCFG, (ledcfg | BIT(3)));
 100                 break;
 101         default:
 102                 pr_err("switch case %#x not processed\n",
 103                        pled->ledpin);
 104                 break;
 105         }
 106         pled->ledon = false;
 107 }
 108
 109 static void _rtl92se_sw_led_control(struct ieee80211_hw *hw,
 110                                     enum led_ctl_mode ledaction)
 111 {
 112         struct rtl_priv *rtlpriv = rtl_priv(hw);
 113         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 114
 115         switch (ledaction) {
 116         case LED_CTL_POWER_ON:
 117         case LED_CTL_LINK:
 118         case LED_CTL_NO_LINK:
 119                 rtl92se_sw_led_on(hw, pled0);
 120                 break;
 121         case LED_CTL_POWER_OFF:
 122                 rtl92se_sw_led_off(hw, pled0);
 123                 break;
 124         default:
 125                 break;
 126         }
 127 }
 128
 129 void rtl92se_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
 130 {
 131         struct rtl_priv *rtlpriv = rtl_priv(hw);
 132         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 133
 134         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 135             (ledaction == LED_CTL_TX ||
 136             ledaction == LED_CTL_RX ||
 137             ledaction == LED_CTL_SITE_SURVEY ||
 138             ledaction == LED_CTL_LINK ||
 139             ledaction == LED_CTL_NO_LINK ||
 140             ledaction == LED_CTL_START_TO_LINK ||
 141             ledaction == LED_CTL_POWER_ON)) {
 142                 return;
 143         }
 144         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n", ledaction);
 145
 146         _rtl92se_sw_led_control(hw, ledaction);
 147 }
 148