drivers/net/wireless/realtek/rtlwifi/rtl8821ae/led.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2010  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 _rtl8821ae_init_led(struct ieee80211_hw *hw,
  32                                 struct rtl_led *pled,
  33                                 enum rtl_led_pin ledpin)
  34 {
  35         pled->hw = hw;
  36         pled->ledpin = ledpin;
  37         pled->ledon = false;
  38 }
  39
  40 void rtl8821ae_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  41 {
  42         u8 ledcfg;
  43         struct rtl_priv *rtlpriv = rtl_priv(hw);
  44
  45         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
  46                  "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
  47
  48         switch (pled->ledpin) {
  49         case LED_PIN_GPIO0:
  50                 break;
  51         case LED_PIN_LED0:
  52                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  53                 ledcfg &= ~BIT(6);
  54                 rtl_write_byte(rtlpriv,
  55                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5));
  56                 break;
  57         case LED_PIN_LED1:
  58                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  59                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg & 0x10);
  60                 break;
  61         default:
  62                 RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
  63                          "switch case %#x not processed\n", pled->ledpin);
  64                 break;
  65         }
  66         pled->ledon = true;
  67 }
  68
  69 void rtl8812ae_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  70 {
  71         u16     ledreg = REG_LEDCFG1;
  72         u8      ledcfg = 0;
  73         struct rtl_priv *rtlpriv = rtl_priv(hw);
  74
  75         switch (pled->ledpin) {
  76         case LED_PIN_LED0:
  77                 ledreg = REG_LEDCFG1;
  78                 break;
  79
  80         case LED_PIN_LED1:
  81                 ledreg = REG_LEDCFG2;
  82                 break;
  83
  84         case LED_PIN_GPIO0:
  85         default:
  86                 break;
  87         }
  88
  89         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
  90                  "In SwLedOn, LedAddr:%X LEDPIN=%d\n",
  91                  ledreg, pled->ledpin);
  92
  93         ledcfg =  rtl_read_byte(rtlpriv, ledreg);
  94         ledcfg |= BIT(5); /*Set 0x4c[21]*/
  95         ledcfg &= ~(BIT(7) | BIT(6) | BIT(3) | BIT(2) | BIT(1) | BIT(0));
  96                 /*Clear 0x4c[23:22] and 0x4c[19:16]*/
  97         rtl_write_byte(rtlpriv, ledreg, ledcfg); /*SW control led0 on.*/
  98         pled->ledon = true;
  99 }
 100
 101 void rtl8821ae_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
 102 {
 103         struct rtl_priv *rtlpriv = rtl_priv(hw);
 104         u8 ledcfg;
 105
 106         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
 107                  "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
 108
 109         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
 110
 111         switch (pled->ledpin) {
 112         case LED_PIN_GPIO0:
 113                 break;
 114         case LED_PIN_LED0:
 115                 ledcfg &= 0xf0;
 116                 if (rtlpriv->ledctl.led_opendrain) {
 117                         ledcfg &= 0x90; /* Set to software control. */
 118                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
 119                         ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
 120                         ledcfg &= 0xFE;
 121                         rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
 122                 } else {
 123                         ledcfg &= ~BIT(6);
 124                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
 125                                        (ledcfg | BIT(3) | BIT(5)));
 126                 }
 127                 break;
 128         case LED_PIN_LED1:
 129                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
 130                 ledcfg &= 0x10; /* Set to software control. */
 131                 rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
 132                 break;
 133         default:
 134                 RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
 135                          "switch case %#x not processed\n", pled->ledpin);
 136                 break;
 137         }
 138         pled->ledon = false;
 139 }
 140
 141 void rtl8812ae_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
 142 {
 143         u16 ledreg = REG_LEDCFG1;
 144         struct rtl_priv *rtlpriv = rtl_priv(hw);
 145
 146         switch (pled->ledpin) {
 147         case LED_PIN_LED0:
 148                 ledreg = REG_LEDCFG1;
 149                 break;
 150
 151         case LED_PIN_LED1:
 152                 ledreg = REG_LEDCFG2;
 153                 break;
 154
 155         case LED_PIN_GPIO0:
 156         default:
 157                 break;
 158         }
 159
 160         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
 161                  "In SwLedOff,LedAddr:%X LEDPIN=%d\n",
 162                  ledreg, pled->ledpin);
 163         /*Open-drain arrangement for controlling the LED*/
 164         if (rtlpriv->ledctl.led_opendrain) {
 165                 u8 ledcfg = rtl_read_byte(rtlpriv, ledreg);
 166
 167                 ledreg &= 0xd0; /* Set to software control.*/
 168                 rtl_write_byte(rtlpriv, ledreg, (ledcfg | BIT(3)));
 169
 170                 /*Open-drain arrangement*/
 171                 ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
 172                 ledcfg &= 0xFE;/*Set GPIO[8] to input mode*/
 173                 rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
 174         } else {
 175                 rtl_write_byte(rtlpriv, ledreg, 0x28);
 176         }
 177
 178         pled->ledon = false;
 179 }
 180
 181 void rtl8821ae_init_sw_leds(struct ieee80211_hw *hw)
 182 {
 183         struct rtl_priv *rtlpriv = rtl_priv(hw);
 184
 185         _rtl8821ae_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 186         _rtl8821ae_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 187 }
 188
 189 static void _rtl8821ae_sw_led_control(struct ieee80211_hw *hw,
 190                                       enum led_ctl_mode ledaction)
 191 {
 192         struct rtl_priv *rtlpriv = rtl_priv(hw);
 193         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 194         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 195
 196         switch (ledaction) {
 197         case LED_CTL_POWER_ON:
 198         case LED_CTL_LINK:
 199         case LED_CTL_NO_LINK:
 200                 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE)
 201                         rtl8812ae_sw_led_on(hw, pled0);
 202                 else
 203                         rtl8821ae_sw_led_on(hw, pled0);
 204                 break;
 205         case LED_CTL_POWER_OFF:
 206                 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE)
 207                         rtl8812ae_sw_led_off(hw, pled0);
 208                 else
 209                         rtl8821ae_sw_led_off(hw, pled0);
 210                 break;
 211         default:
 212                 break;
 213         }
 214 }
 215
 216 void rtl8821ae_led_control(struct ieee80211_hw *hw,
 217                            enum led_ctl_mode ledaction)
 218 {
 219         struct rtl_priv *rtlpriv = rtl_priv(hw);
 220         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 221
 222         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 223             (ledaction == LED_CTL_TX ||
 224              ledaction == LED_CTL_RX ||
 225              ledaction == LED_CTL_SITE_SURVEY ||
 226              ledaction == LED_CTL_LINK ||
 227              ledaction == LED_CTL_NO_LINK ||
 228              ledaction == LED_CTL_START_TO_LINK ||
 229              ledaction == LED_CTL_POWER_ON)) {
 230                 return;
 231         }
 232         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n",
 233                  ledaction);
 234         _rtl8821ae_sw_led_control(hw, ledaction);
 235 }