drivers/net/wireless/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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "../wifi.h"
  31 #include "../pci.h"
  32 #include "reg.h"
  33 #include "led.h"
  34
  35 static void _rtl92ce_init_led(struct ieee80211_hw *hw,
  36                               struct rtl_led *pled, enum rtl_led_pin ledpin)
  37 {
  38         pled->hw = hw;
  39         pled->ledpin = ledpin;
  40         pled->ledon = false;
  41 }
  42
  43 void rtl92de_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  44 {
  45         u8 ledcfg;
  46         struct rtl_priv *rtlpriv = rtl_priv(hw);
  47
  48         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  49                  REG_LEDCFG2, pled->ledpin);
  50
  51         switch (pled->ledpin) {
  52         case LED_PIN_GPIO0:
  53                 break;
  54         case LED_PIN_LED0:
  55                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  56
  57                 if ((rtlpriv->efuse.eeprom_did == 0x8176) ||
  58                         (rtlpriv->efuse.eeprom_did == 0x8193))
  59                         /* BIT7 of REG_LEDCFG2 should be set to
  60                          * make sure we could emit the led2. */
  61                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  62                                        BIT(7) | BIT(5) | BIT(6));
  63                 else
  64                         rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  65                                        BIT(7) | BIT(5));
  66                 break;
  67         case LED_PIN_LED1:
  68                 ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  69
  70                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  71                 break;
  72         default:
  73                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
  74                          "switch case not processed\n");
  75                 break;
  76         }
  77         pled->ledon = true;
  78 }
  79
  80 void rtl92de_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  81 {
  82         struct rtl_priv *rtlpriv = rtl_priv(hw);
  83         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
  84         u8 ledcfg;
  85
  86         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  87                  REG_LEDCFG2, pled->ledpin);
  88
  89         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  90
  91         switch (pled->ledpin) {
  92         case LED_PIN_GPIO0:
  93                 break;
  94         case LED_PIN_LED0:
  95                 ledcfg &= 0xf0;
  96                 if (pcipriv->ledctl.led_opendrain)
  97                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  98                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  99                 else
 100                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
 101                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
 102                 break;
 103         case LED_PIN_LED1:
 104                 ledcfg &= 0x0f;
 105                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
 106                 break;
 107         default:
 108                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 109                          "switch case not processed\n");
 110                 break;
 111         }
 112         pled->ledon = false;
 113 }
 114
 115 void rtl92de_init_sw_leds(struct ieee80211_hw *hw)
 116 {
 117         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 118         _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led0), LED_PIN_LED0);
 119         _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led1), LED_PIN_LED1);
 120 }
 121
 122 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
 123                                     enum led_ctl_mode ledaction)
 124 {
 125         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 126         struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
 127         switch (ledaction) {
 128         case LED_CTL_POWER_ON:
 129         case LED_CTL_LINK:
 130         case LED_CTL_NO_LINK:
 131                 rtl92de_sw_led_on(hw, pLed0);
 132                 break;
 133         case LED_CTL_POWER_OFF:
 134                 rtl92de_sw_led_off(hw, pLed0);
 135                 break;
 136         default:
 137                 break;
 138         }
 139 }
 140
 141 void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
 142 {
 143         struct rtl_priv *rtlpriv = rtl_priv(hw);
 144         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 145
 146         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 147             (ledaction == LED_CTL_TX ||
 148              ledaction == LED_CTL_RX ||
 149              ledaction == LED_CTL_SITE_SURVEY ||
 150              ledaction == LED_CTL_LINK ||
 151              ledaction == LED_CTL_NO_LINK ||
 152              ledaction == LED_CTL_START_TO_LINK ||
 153              ledaction == LED_CTL_POWER_ON)) {
 154                 return;
 155         }
 156         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);
 157
 158         _rtl92ce_sw_led_control(hw, ledaction);
 159 }