drivers/net/wireless/realtek/rtlwifi/rtl8192cu/led.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
   3
   4 #include "../wifi.h"
   5 #include "../usb.h"
   6 #include "reg.h"
   7 #include "led.h"
   8
   9 static void _rtl92cu_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 static void rtl92cu_deinit_led(struct rtl_led *pled)
  18 {
  19 }
  20
  21 void rtl92cu_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
  22 {
  23         u8 ledcfg;
  24         struct rtl_priv *rtlpriv = rtl_priv(hw);
  25
  26         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  27                  REG_LEDCFG2, pled->ledpin);
  28         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  29         switch (pled->ledpin) {
  30         case LED_PIN_GPIO0:
  31                 break;
  32         case LED_PIN_LED0:
  33                 rtl_write_byte(rtlpriv,
  34                                REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
  35                 break;
  36         case LED_PIN_LED1:
  37                 rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
  38                 break;
  39         default:
  40                 pr_err("switch case %#x not processed\n",
  41                        pled->ledpin);
  42                 break;
  43         }
  44         pled->ledon = true;
  45 }
  46
  47 void rtl92cu_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
  48 {
  49         struct rtl_priv *rtlpriv = rtl_priv(hw);
  50         u8 ledcfg;
  51
  52         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
  53                  REG_LEDCFG2, pled->ledpin);
  54         ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
  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_err("switch case %#x not processed\n",
  73                        pled->ledpin);
  74                 break;
  75         }
  76         pled->ledon = false;
  77 }
  78
  79 void rtl92cu_init_sw_leds(struct ieee80211_hw *hw)
  80 {
  81         struct rtl_priv *rtlpriv = rtl_priv(hw);
  82
  83         _rtl92cu_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
  84         _rtl92cu_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
  85 }
  86
  87 void rtl92cu_deinit_sw_leds(struct ieee80211_hw *hw)
  88 {
  89         struct rtl_priv *rtlpriv = rtl_priv(hw);
  90
  91         rtl92cu_deinit_led(&rtlpriv->ledctl.sw_led0);
  92         rtl92cu_deinit_led(&rtlpriv->ledctl.sw_led1);
  93 }
  94
  95 static void _rtl92cu_sw_led_control(struct ieee80211_hw *hw,
  96                                     enum led_ctl_mode ledaction)
  97 {
  98 }
  99
 100 void rtl92cu_led_control(struct ieee80211_hw *hw,
 101                         enum led_ctl_mode ledaction)
 102 {
 103         struct rtl_priv *rtlpriv = rtl_priv(hw);
 104         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 105
 106         if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
 107             (ledaction == LED_CTL_TX ||
 108              ledaction == LED_CTL_RX ||
 109              ledaction == LED_CTL_SITE_SURVEY ||
 110              ledaction == LED_CTL_LINK ||
 111              ledaction == LED_CTL_NO_LINK ||
 112              ledaction == LED_CTL_START_TO_LINK ||
 113              ledaction == LED_CTL_POWER_ON)) {
 114                 return;
 115         }
 116         RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n", ledaction);
 117         _rtl92cu_sw_led_control(hw, ledaction);
 118 }