drivers/net/wireless/realtek/rtlwifi/rtl8192cu/led.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation. All rights reserved.
   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  *****************************************************************************/
  27
  28 #include "../wifi.h"
  29 #include "../usb.h"
  30 #include "reg.h"
  31 #include "led.h"
  32
  33 static void _rtl92cu_init_led(struct ieee80211_hw *hw,
  34                               struct rtl_led *pled, enum rtl_led_pin ledpin)
  35 {
  36         pled->hw = hw;
  37         pled->ledpin = ledpin;
  38         pled->ledon = false;
  39 }
  40
  41 static void _rtl92cu_deInit_led(struct rtl_led *pled)
  42 {
  43 }
  44
  45 void rtl92cu_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  46 {
  47         u8 ledcfg;
  48         struct rtl_priv *rtlpriv = rtl_priv(hw);
  49
  50         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  51                  REG_LEDCFG2, pled->ledpin);
  52         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  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 rtl92cu_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  72 {
  73         struct rtl_priv *rtlpriv = rtl_priv(hw);
  74         struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
  75         u8 ledcfg;
  76
  77         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  78                  REG_LEDCFG2, pled->ledpin);
  79         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  80         switch (pled->ledpin) {
  81         case LED_PIN_GPIO0:
  82                 break;
  83         case LED_PIN_LED0:
  84                 ledcfg &= 0xf0;
  85                 if (usbpriv->ledctl.led_opendrain)
  86                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  87                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  88                 else
  89                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  90                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  91                 break;
  92         case LED_PIN_LED1:
  93                 ledcfg &= 0x0f;
  94                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
  95                 break;
  96         default:
  97                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
  98                          "switch case not processed\n");
  99                 break;
 100         }
 101         pled->ledon = false;
 102 }
 103
 104 void rtl92cu_init_sw_leds(struct ieee80211_hw *hw)
 105 {
 106         struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
 107         _rtl92cu_init_led(hw, &(usbpriv->ledctl.sw_led0), LED_PIN_LED0);
 108         _rtl92cu_init_led(hw, &(usbpriv->ledctl.sw_led1), LED_PIN_LED1);
 109 }
 110
 111 void rtl92cu_deinit_sw_leds(struct ieee80211_hw *hw)
 112 {
 113         struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
 114         _rtl92cu_deInit_led(&(usbpriv->ledctl.sw_led0));
 115         _rtl92cu_deInit_led(&(usbpriv->ledctl.sw_led1));
 116 }
 117
 118 static void _rtl92cu_sw_led_control(struct ieee80211_hw *hw,
 119                                     enum led_ctl_mode ledaction)
 120 {
 121 }
 122
 123 void rtl92cu_led_control(struct ieee80211_hw *hw,
 124                         enum led_ctl_mode ledaction)
 125 {
 126         struct rtl_priv *rtlpriv = rtl_priv(hw);
 127         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 128
 129         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 130             (ledaction == LED_CTL_TX ||
 131              ledaction == LED_CTL_RX ||
 132              ledaction == LED_CTL_SITE_SURVEY ||
 133              ledaction == LED_CTL_LINK ||
 134              ledaction == LED_CTL_NO_LINK ||
 135              ledaction == LED_CTL_START_TO_LINK ||
 136              ledaction == LED_CTL_POWER_ON)) {
 137                 return;
 138         }
 139         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n", ledaction);
 140         _rtl92cu_sw_led_control(hw, ledaction);
 141 }