drivers/net/wireless/realtek/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  * 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 _rtl92ce_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 rtl92ce_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, "LedAddr:%X ledpin=%d\n",
  45                  REG_LEDCFG2, pled->ledpin);
  46
  47         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  48
  49         switch (pled->ledpin) {
  50         case LED_PIN_GPIO0:
  51                 break;
  52         case LED_PIN_LED0:
  53                 rtl_write_byte(rtlpriv,
  54                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
  55                 break;
  56         case LED_PIN_LED1:
  57                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  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 rtl92ce_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, "LedAddr:%X ledpin=%d\n",
  73                  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                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  84                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  85                 else
  86                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  87                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  88                 break;
  89         case LED_PIN_LED1:
  90                 ledcfg &= 0x0f;
  91                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
  92                 break;
  93         default:
  94                 pr_info("switch case %#x not processed\n", pled->ledpin);
  95                 break;
  96         }
  97         pled->ledon = false;
  98 }
  99
 100 void rtl92ce_init_sw_leds(struct ieee80211_hw *hw)
 101 {
 102         struct rtl_priv *rtlpriv = rtl_priv(hw);
 103
 104         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
 105         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
 106 }
 107
 108 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
 109                                     enum led_ctl_mode ledaction)
 110 {
 111         struct rtl_priv *rtlpriv = rtl_priv(hw);
 112         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
 113
 114         switch (ledaction) {
 115         case LED_CTL_POWER_ON:
 116         case LED_CTL_LINK:
 117         case LED_CTL_NO_LINK:
 118                 rtl92ce_sw_led_on(hw, pled0);
 119                 break;
 120         case LED_CTL_POWER_OFF:
 121                 rtl92ce_sw_led_off(hw, pled0);
 122                 break;
 123         default:
 124                 break;
 125         }
 126 }
 127
 128 void rtl92ce_led_control(struct ieee80211_hw *hw,
 129                         enum led_ctl_mode ledaction)
 130 {
 131         struct rtl_priv *rtlpriv = rtl_priv(hw);
 132         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 133
 134         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 135             (ledaction == LED_CTL_TX ||
 136              ledaction == LED_CTL_RX ||
 137              ledaction == LED_CTL_SITE_SURVEY ||
 138              ledaction == LED_CTL_LINK ||
 139              ledaction == LED_CTL_NO_LINK ||
 140              ledaction == LED_CTL_START_TO_LINK ||
 141              ledaction == LED_CTL_POWER_ON)) {
 142                 return;
 143         }
 144         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n",
 145                  ledaction);
 146         _rtl92ce_sw_led_control(hw, ledaction);
 147 }