LXR linux/drivers/net/wireless/rtlwifi/rtl8192de/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 rtl92de_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        switch (pled->ledpin) {
  52        case LED_PIN_GPIO0:
  53                break;
  54        case LED_PIN_LED0:
  55                ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  56
  57                if ((rtlpriv->efuse.eeprom_did == 0x8176) ||
  58                        (rtlpriv->efuse.eeprom_did == 0x8193))
  59                        /* BIT7 of REG_LEDCFG2 should be set to
  60                         * make sure we could emit the led2. */
  61                        rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  62                                       BIT(7) | BIT(5) | BIT(6));
  63                else
  64                        rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
  65                                       BIT(7) | BIT(5));
  66                break;
  67        case LED_PIN_LED1:
  68                ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
  69
  70                rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  71                break;
  72        default:
  73                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
  74                         "switch case not processed\n");
  75                break;
  76        }
  77        pled->ledon = true;
  78}
  79
  80void rtl92de_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  81{
  82        struct rtl_priv *rtlpriv = rtl_priv(hw);
  83        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
  84        u8 ledcfg;
  85
  86        RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  87                 REG_LEDCFG2, pled->ledpin);
  88
  89        ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  90
  91        switch (pled->ledpin) {
  92        case LED_PIN_GPIO0:
  93                break;
  94        case LED_PIN_LED0:
  95                ledcfg &= 0xf0;
  96                if (pcipriv->ledctl.led_opendrain)
  97                        rtl_write_byte(rtlpriv, REG_LEDCFG2,
  98                                       (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  99                else
 100                        rtl_write_byte(rtlpriv, REG_LEDCFG2,
 101                                       (ledcfg | BIT(3) | BIT(5) | BIT(6)));
 102                break;
 103        case LED_PIN_LED1:
 104                ledcfg &= 0x0f;
 105                rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
 106                break;
 107        default:
 108                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 109                         "switch case not processed\n");
 110                break;
 111        }
 112        pled->ledon = false;
 113}
 114
 115void rtl92de_init_sw_leds(struct ieee80211_hw *hw)
 116{
 117        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 118        _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led0), LED_PIN_LED0);
 119        _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led1), LED_PIN_LED1);
 120}
 121
 122static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
 123                                    enum led_ctl_mode ledaction)
 124{
 125        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 126        struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
 127        switch (ledaction) {
 128        case LED_CTL_POWER_ON:
 129        case LED_CTL_LINK:
 130        case LED_CTL_NO_LINK:
 131                rtl92de_sw_led_on(hw, pLed0);
 132                break;
 133        case LED_CTL_POWER_OFF:
 134                rtl92de_sw_led_off(hw, pLed0);
 135                break;
 136        default:
 137                break;
 138        }
 139}
 140
 141void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
 142{
 143        struct rtl_priv *rtlpriv = rtl_priv(hw);
 144        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 145
 146        if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 147            (ledaction == LED_CTL_TX ||
 148             ledaction == LED_CTL_RX ||
 149             ledaction == LED_CTL_SITE_SURVEY ||
 150             ledaction == LED_CTL_LINK ||
 151             ledaction == LED_CTL_NO_LINK ||
 152             ledaction == LED_CTL_START_TO_LINK ||
 153             ledaction == LED_CTL_POWER_ON)) {
 154                return;
 155        }
 156        RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);
 157
 158        _rtl92ce_sw_led_control(hw, ledaction);
 159}
 160