drivers/net/wireless/realtek/rtlwifi/rtl8192ce/led.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
   3
   4 #include "../wifi.h"
   5 #include "../pci.h"
   6 #include "reg.h"
   7 #include "led.h"
   8
   9 static void _rtl92ce_init_led(struct ieee80211_hw *hw,
  10                               struct rtl_led *pled, enum rtl_led_pin ledpin)
  11 {
  12         pled->hw = hw;
  13         pled->ledpin = ledpin;
  14         pled->ledon = false;
  15 }
  16
  17 void rtl92ce_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  18 {
  19         u8 ledcfg;
  20         struct rtl_priv *rtlpriv = rtl_priv(hw);
  21
  22         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  23                  REG_LEDCFG2, pled->ledpin);
  24
  25         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  26
  27         switch (pled->ledpin) {
  28         case LED_PIN_GPIO0:
  29                 break;
  30         case LED_PIN_LED0:
  31                 rtl_write_byte(rtlpriv,
  32                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
  33                 break;
  34         case LED_PIN_LED1:
  35                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  36                 break;
  37         default:
  38                 pr_err("switch case %#x not processed\n",
  39                        pled->ledpin);
  40                 break;
  41         }
  42         pled->ledon = true;
  43 }
  44
  45 void rtl92ce_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  46 {
  47         struct rtl_priv *rtlpriv = rtl_priv(hw);
  48         u8 ledcfg;
  49
  50         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  51                  REG_LEDCFG2, pled->ledpin);
  52
  53         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  54
  55         switch (pled->ledpin) {
  56         case LED_PIN_GPIO0:
  57                 break;
  58         case LED_PIN_LED0:
  59                 ledcfg &= 0xf0;
  60                 if (rtlpriv->ledctl.led_opendrain)
  61                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  62                                        (ledcfg | BIT(1) | BIT(5) | BIT(6)));
  63                 else
  64                         rtl_write_byte(rtlpriv, REG_LEDCFG2,
  65                                        (ledcfg | BIT(3) | BIT(5) | BIT(6)));
  66                 break;
  67         case LED_PIN_LED1:
  68                 ledcfg &= 0x0f;
  69                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
  70                 break;
  71         default:
  72                 pr_info("switch case %#x not processed\n", pled->ledpin);
  73                 break;
  74         }
  75         pled->ledon = false;
  76 }
  77
  78 void rtl92ce_init_sw_leds(struct ieee80211_hw *hw)
  79 {
  80         struct rtl_priv *rtlpriv = rtl_priv(hw);
  81
  82         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
  83         _rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
  84 }
  85
  86 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
  87                                     enum led_ctl_mode ledaction)
  88 {
  89         struct rtl_priv *rtlpriv = rtl_priv(hw);
  90         struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
  91
  92         switch (ledaction) {
  93         case LED_CTL_POWER_ON:
  94         case LED_CTL_LINK:
  95         case LED_CTL_NO_LINK:
  96                 rtl92ce_sw_led_on(hw, pled0);
  97                 break;
  98         case LED_CTL_POWER_OFF:
  99                 rtl92ce_sw_led_off(hw, pled0);
 100                 break;
 101         default:
 102                 break;
 103         }
 104 }
 105
 106 void rtl92ce_led_control(struct ieee80211_hw *hw,
 107                         enum led_ctl_mode ledaction)
 108 {
 109         struct rtl_priv *rtlpriv = rtl_priv(hw);
 110         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 111
 112         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 113             (ledaction == LED_CTL_TX ||
 114              ledaction == LED_CTL_RX ||
 115              ledaction == LED_CTL_SITE_SURVEY ||
 116              ledaction == LED_CTL_LINK ||
 117              ledaction == LED_CTL_NO_LINK ||
 118              ledaction == LED_CTL_START_TO_LINK ||
 119              ledaction == LED_CTL_POWER_ON)) {
 120                 return;
 121         }
 122         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n",
 123                  ledaction);
 124         _rtl92ce_sw_led_control(hw, ledaction);
 125 }