drivers/net/wireless/realtek/rtlwifi/rtl8192de/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 _rtl92ce_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 rtl92de_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  40 {
  41         u8 ledcfg;
  42         struct rtl_priv *rtlpriv = rtl_priv(hw);
  43
  44         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  45                  REG_LEDCFG2, pled->ledpin);
  46
  47         switch (pled->ledpin) {
  48         case LED_PIN_GPIO0:
  49                 break;
  50         case LED_PIN_LED0:
  51                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  52
  53                 if ((rtlpriv->efuse.eeprom_did == 0x8176) ||
  54                         (rtlpriv->efuse.eeprom_did == 0x8193))
  55                         /* BIT7 of REG_LEDCFG2 should be set to
  56                          * make sure we could emit the led2. */
  57                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  58                                        BIT(7) | BIT(5) | BIT(6));
  59                 else
  60                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  61                                        BIT(7) | BIT(5));
  62                 break;
  63         case LED_PIN_LED1:
  64                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  65
  66                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  67                 break;
  68         default:
  69                 pr_err("switch case %#x not processed\n",
  70                        pled->ledpin);
  71                 break;
  72         }
  73         pled->ledon = true;
  74 }
  75
  76 void rtl92de_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  77 {
  78         struct rtl_priv *rtlpriv = rtl_priv(hw);
  79         u8 ledcfg;
  80
  81         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  82                  REG_LEDCFG2, pled->ledpin);
  83
  84         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  85
  86         switch (pled->ledpin) {
  87         case LED_PIN_GPIO0:
  88                 break;
  89         case LED_PIN_LED0:
  90                 ledcfg &= 0xf0;
  91                 if (rtlpriv->ledctl.led_opendrain)
  92                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  93                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  94                 else
  95                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  96                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  97                 break;
  98         case LED_PIN_LED1:
  99                 ledcfg &= 0x0f;
 100                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
 101                 break;
 102         default:
 103                 pr_err("switch case %#x not processed\n",
 104                        pled->ledpin);
 105                 break;
 106         }
 107         pled->ledon = false;
 108 }
 109
 110 void rtl92de_init_sw_leds(struct ieee80211_hw *hw)
 111 {
 112         struct rtl_priv *rtlpriv = rtl_priv(hw);
 113
 114         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 115         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 116 }
 117
 118 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
 119                                     enum led_ctl_mode ledaction)
 120 {
 121         struct rtl_priv *rtlpriv = rtl_priv(hw);
 122         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 123
 124         switch (ledaction) {
 125         case LED_CTL_POWER_ON:
 126         case LED_CTL_LINK:
 127         case LED_CTL_NO_LINK:
 128                 rtl92de_sw_led_on(hw, pled0);
 129                 break;
 130         case LED_CTL_POWER_OFF:
 131                 rtl92de_sw_led_off(hw, pled0);
 132                 break;
 133         default:
 134                 break;
 135         }
 136 }
 137
 138 void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
 139 {
 140         struct rtl_priv *rtlpriv = rtl_priv(hw);
 141         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 142
 143         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 144             (ledaction == LED_CTL_TX ||
 145              ledaction == LED_CTL_RX ||
 146              ledaction == LED_CTL_SITE_SURVEY ||
 147              ledaction == LED_CTL_LINK ||
 148              ledaction == LED_CTL_NO_LINK ||
 149              ledaction == LED_CTL_START_TO_LINK ||
 150              ledaction == LED_CTL_POWER_ON)) {
 151                 return;
 152         }
 153         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);
 154
 155         _rtl92ce_sw_led_control(hw, ledaction);
 156 }