drivers/net/wireless/rtlwifi/rtl8192ce/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 rtl92ce_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         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  52
  53         switch (pled->ledpin) {
  54         case LED_PIN_GPIO0:
  55                 break;
  56         case LED_PIN_LED0:
  57                 rtl_write_byte(rtlpriv,
  58                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
  59                 break;
  60         case LED_PIN_LED1:
  61                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  62                 break;
  63         default:
  64                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
  65                          "switch case not processed\n");
  66                 break;
  67         }
  68         pled->ledon = true;
  69 }
  70
  71 void rtl92ce_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  72 {
  73         struct rtl_priv *rtlpriv = rtl_priv(hw);
  74         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
  75         u8 ledcfg;
  76
  77         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  78                  REG_LEDCFG2, pled->ledpin);
  79
  80         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  81
  82         switch (pled->ledpin) {
  83         case LED_PIN_GPIO0:
  84                 break;
  85         case LED_PIN_LED0:
  86                 ledcfg &= 0xf0;
  87                 if (pcipriv->ledctl.led_opendrain)
  88                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  89                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  90                 else
  91                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  92                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  93                 break;
  94         case LED_PIN_LED1:
  95                 ledcfg &= 0x0f;
  96                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
  97                 break;
  98         default:
  99                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 100                          "switch case not processed\n");
 101                 break;
 102         }
 103         pled->ledon = false;
 104 }
 105
 106 void rtl92ce_init_sw_leds(struct ieee80211_hw *hw)
 107 {
 108         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 109         _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led0), LED_PIN_LED0);
 110         _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led1), LED_PIN_LED1);
 111 }
 112
 113 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
 114                                     enum led_ctl_mode ledaction)
 115 {
 116         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 117         struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
 118         switch (ledaction) {
 119         case LED_CTL_POWER_ON:
 120         case LED_CTL_LINK:
 121         case LED_CTL_NO_LINK:
 122                 rtl92ce_sw_led_on(hw, pLed0);
 123                 break;
 124         case LED_CTL_POWER_OFF:
 125                 rtl92ce_sw_led_off(hw, pLed0);
 126                 break;
 127         default:
 128                 break;
 129         }
 130 }
 131
 132 void rtl92ce_led_control(struct ieee80211_hw *hw,
 133                         enum led_ctl_mode ledaction)
 134 {
 135         struct rtl_priv *rtlpriv = rtl_priv(hw);
 136         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 137
 138         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 139             (ledaction == LED_CTL_TX ||
 140              ledaction == LED_CTL_RX ||
 141              ledaction == LED_CTL_SITE_SURVEY ||
 142              ledaction == LED_CTL_LINK ||
 143              ledaction == LED_CTL_NO_LINK ||
 144              ledaction == LED_CTL_START_TO_LINK ||
 145              ledaction == LED_CTL_POWER_ON)) {
 146                 return;
 147         }
 148         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n",
 149                  ledaction);
 150         _rtl92ce_sw_led_control(hw, ledaction);
 151 }