LXR linux/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
  31static 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
  39void 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
  67void 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
 100void 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
 108static 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
 128void 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}
 148