led.c

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/******************************************************************************
 *
 * Copyright(c) 2009-2012  Realtek Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <[email protected]>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <[email protected]>
 *
 *****************************************************************************/

#include "../wifi.h"
#include "../pci.h"
#include "reg.h"
#include "led.h"

static void _rtl92ce_init_led(struct ieee80211_hw *hw,
                  struct rtl_led *pled, enum rtl_led_pin ledpin)
{
    pled->hw = hw;
    pled->ledpin = ledpin;
    pled->ledon = false;
}

void rtl92de_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
{
    u8 ledcfg;
    struct rtl_priv *rtlpriv = rtl_priv(hw);

    RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
         REG_LEDCFG2, pled->ledpin);

    switch (pled->ledpin) {
    case LED_PIN_GPIO0:
        break;
    case LED_PIN_LED0:
        ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);

        if ((rtlpriv->efuse.eeprom_did == 0x8176) ||
            (rtlpriv->efuse.eeprom_did == 0x8193))
            /* BIT7 of REG_LEDCFG2 should be set to
             * make sure we could emit the led2. */
            rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
                       BIT(7) | BIT(5) | BIT(6));
        else
            rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
                       BIT(7) | BIT(5));
        break;
    case LED_PIN_LED1:
        ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);

        rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "switch case not processed\n");
        break;
    }
    pled->ledon = true;
}

void rtl92de_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
    u8 ledcfg;

    RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
         REG_LEDCFG2, pled->ledpin);

    ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);

    switch (pled->ledpin) {
    case LED_PIN_GPIO0:
        break;
    case LED_PIN_LED0:
        ledcfg &= 0xf0;
        if (pcipriv->ledctl.led_opendrain)
            rtl_write_byte(rtlpriv, REG_LEDCFG2,
                       (ledcfg | BIT(1) | BIT(5) | BIT(6)));
        else
            rtl_write_byte(rtlpriv, REG_LEDCFG2,
                       (ledcfg | BIT(3) | BIT(5) | BIT(6)));
        break;
    case LED_PIN_LED1:
        ledcfg &= 0x0f;
        rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "switch case not processed\n");
        break;
    }
    pled->ledon = false;
}

void rtl92de_init_sw_leds(struct ieee80211_hw *hw)
{
    struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
    _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led0), LED_PIN_LED0);
    _rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led1), LED_PIN_LED1);
}

static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
                    enum led_ctl_mode ledaction)
{
    struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
    struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
    switch (ledaction) {
    case LED_CTL_POWER_ON:
    case LED_CTL_LINK:
    case LED_CTL_NO_LINK:
        rtl92de_sw_led_on(hw, pLed0);
        break;
    case LED_CTL_POWER_OFF:
        rtl92de_sw_led_off(hw, pLed0);
        break;
    default:
        break;
    }
}

void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));

    if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
        (ledaction == LED_CTL_TX ||
         ledaction == LED_CTL_RX ||
         ledaction == LED_CTL_SITE_SURVEY ||
         ledaction == LED_CTL_LINK ||
         ledaction == LED_CTL_NO_LINK ||
         ledaction == LED_CTL_START_TO_LINK ||
         ledaction == LED_CTL_POWER_ON)) {
        return;
    }
    RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);

    _rtl92ce_sw_led_control(hw, ledaction);
}