drivers/net/wireless/realtek/rtlwifi/rtl8723ae/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 _rtl8723e_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 rtl8723e_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,
  45                  "LedAddr:%X ledpin=%d\n", 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                 ledcfg &= ~BIT(6);
  53                 rtl_write_byte(rtlpriv,
  54                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5));
  55                 break;
  56         case LED_PIN_LED1:
  57                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  58                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg & 0x10);
  59                 break;
  60         default:
  61                 pr_err("switch case %#x not processed\n",
  62                        pled->ledpin);
  63                 break;
  64         }
  65         pled->ledon = true;
  66 }
  67
  68 void rtl8723e_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  69 {
  70         struct rtl_priv *rtlpriv = rtl_priv(hw);
  71         u8 ledcfg;
  72
  73         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
  74                  "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
  75
  76         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  77
  78         switch (pled->ledpin) {
  79         case LED_PIN_GPIO0:
  80                 break;
  81         case LED_PIN_LED0:
  82                 ledcfg &= 0xf0;
  83                 if (rtlpriv->ledctl.led_opendrain) {
  84                         ledcfg &= 0x90; /* Set to software control. */
  85                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
  86                         ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
  87                         ledcfg &= 0xFE;
  88                         rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
  89                 } else {
  90                         ledcfg &= ~BIT(6);
  91                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  92                                         (ledcfg | BIT(3) | BIT(5)));
  93                 }
  94                 break;
  95         case LED_PIN_LED1:
  96                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  97                 ledcfg &= 0x10; /* Set to software control. */
  98                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
  99
 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 void rtl8723e_init_sw_leds(struct ieee80211_hw *hw)
 110 {
 111         struct rtl_priv *rtlpriv = rtl_priv(hw);
 112
 113         _rtl8723e_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 114         _rtl8723e_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 115 }
 116
 117 static void _rtl8723e_sw_led_control(struct ieee80211_hw *hw,
 118                                      enum led_ctl_mode ledaction)
 119 {
 120         struct rtl_priv *rtlpriv = rtl_priv(hw);
 121         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 122
 123         switch (ledaction) {
 124         case LED_CTL_POWER_ON:
 125         case LED_CTL_LINK:
 126         case LED_CTL_NO_LINK:
 127                 rtl8723e_sw_led_on(hw, pled0);
 128                 break;
 129         case LED_CTL_POWER_OFF:
 130                 rtl8723e_sw_led_off(hw, pled0);
 131                 break;
 132         default:
 133                 break;
 134         }
 135 }
 136
 137 void rtl8723e_led_control(struct ieee80211_hw *hw,
 138                           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",
 154                  ledaction);
 155         _rtl8723e_sw_led_control(hw, ledaction);
 156 }