drivers/net/wireless/realtek/rtlwifi/rtl8723be/led.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2014  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 _rtl8723be_init_led(struct ieee80211_hw *hw,  struct rtl_led *pled,
  32                                 enum rtl_led_pin ledpin)
  33 {
  34         pled->hw = hw;
  35         pled->ledpin = ledpin;
  36         pled->ledon = false;
  37 }
  38
  39 void rtl8723be_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, REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5));
  54                 break;
  55         case LED_PIN_LED1:
  56                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  57                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg & 0x10);
  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 rtl8723be_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,
  73                  "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
  74
  75         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  76
  77         switch (pled->ledpin) {
  78         case LED_PIN_GPIO0:
  79                 break;
  80         case LED_PIN_LED0:
  81                 ledcfg &= 0xf0;
  82                 if (rtlpriv->ledctl.led_opendrain) {
  83                         ledcfg &= 0x90; /* Set to software control. */
  84                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
  85                         ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
  86                         ledcfg &= 0xFE;
  87                         rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
  88                 } else {
  89                         ledcfg &= ~BIT(6);
  90                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  91                                        (ledcfg | BIT(3) | BIT(5)));
  92                 }
  93                 break;
  94         case LED_PIN_LED1:
  95                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  96                 ledcfg &= 0x10; /* Set to software control. */
  97                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
  98
  99                 break;
 100         default:
 101                 pr_err("switch case %#x not processed\n",
 102                        pled->ledpin);
 103                 break;
 104         }
 105         pled->ledon = false;
 106 }
 107
 108 void rtl8723be_init_sw_leds(struct ieee80211_hw *hw)
 109 {
 110         struct rtl_priv *rtlpriv = rtl_priv(hw);
 111
 112         _rtl8723be_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 113         _rtl8723be_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 114 }
 115
 116 static void _rtl8723be_sw_led_control(struct ieee80211_hw *hw,
 117                                       enum led_ctl_mode ledaction)
 118 {
 119         struct rtl_priv *rtlpriv = rtl_priv(hw);
 120         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 121
 122         switch (ledaction) {
 123         case LED_CTL_POWER_ON:
 124         case LED_CTL_LINK:
 125         case LED_CTL_NO_LINK:
 126                 rtl8723be_sw_led_on(hw, pled0);
 127                 break;
 128         case LED_CTL_POWER_OFF:
 129                 rtl8723be_sw_led_off(hw, pled0);
 130                 break;
 131         default:
 132                 break;
 133         }
 134 }
 135
 136 void rtl8723be_led_control(struct ieee80211_hw *hw,
 137                            enum led_ctl_mode ledaction)
 138 {
 139         struct rtl_priv *rtlpriv = rtl_priv(hw);
 140         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 141
 142         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 143             (ledaction == LED_CTL_TX ||
 144              ledaction == LED_CTL_RX ||
 145              ledaction == LED_CTL_SITE_SURVEY ||
 146              ledaction == LED_CTL_LINK ||
 147              ledaction == LED_CTL_NO_LINK ||
 148              ledaction == LED_CTL_START_TO_LINK ||
 149              ledaction == LED_CTL_POWER_ON)) {
 150                 return;
 151         }
 152         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);
 153         _rtl8723be_sw_led_control(hw, ledaction);
 154 }