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 * 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
  35static 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
  43void 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
  71void 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
 106void 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
 113static 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
 132void 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}
 152