1 /******************************************************************************
2  *
3  * Copyright(c) 2009-2014  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  * The full GNU General Public License is included in this distribution in the
15  * file called LICENSE.
16  *
17  * Contact Information:
18  * wlanfae <wlanfae@realtek.com>
19  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
20  * Hsinchu 300, Taiwan.
21  *
22  * Larry Finger <Larry.Finger@lwfinger.net>
23  *
24  *****************************************************************************/
25 
26 #include "../wifi.h"
27 #include "../pci.h"
28 #include "reg.h"
29 #include "led.h"
30 
31 static void _rtl8723be_init_led(struct ieee80211_hw *hw,  struct rtl_led *pled,
32 				enum rtl_led_pin ledpin)
33 {
34 	pled->hw = hw;
35 	pled->ledpin = ledpin;
36 	pled->ledon = false;
37 }
38 
39 void rtl8723be_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
40 {
41 	u8 ledcfg;
42 	struct rtl_priv *rtlpriv = rtl_priv(hw);
43 
44 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
45 		 "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
46 
47 	switch (pled->ledpin) {
48 	case LED_PIN_GPIO0:
49 		break;
50 	case LED_PIN_LED0:
51 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
52 		ledcfg &= ~BIT(6);
53 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5));
54 		break;
55 	case LED_PIN_LED1:
56 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
57 		rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg & 0x10);
58 		break;
59 	default:
60 		pr_err("switch case %#x not processed\n",
61 		       pled->ledpin);
62 		break;
63 	}
64 	pled->ledon = true;
65 }
66 
67 void rtl8723be_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
68 {
69 	struct rtl_priv *rtlpriv = rtl_priv(hw);
70 	u8 ledcfg;
71 
72 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
73 		 "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
74 
75 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
76 
77 	switch (pled->ledpin) {
78 	case LED_PIN_GPIO0:
79 		break;
80 	case LED_PIN_LED0:
81 		ledcfg &= 0xf0;
82 		if (rtlpriv->ledctl.led_opendrain) {
83 			ledcfg &= 0x90; /* Set to software control. */
84 			rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
85 			ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
86 			ledcfg &= 0xFE;
87 			rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
88 		} else {
89 			ledcfg &= ~BIT(6);
90 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
91 				       (ledcfg | BIT(3) | BIT(5)));
92 		}
93 		break;
94 	case LED_PIN_LED1:
95 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
96 		ledcfg &= 0x10; /* Set to software control. */
97 		rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
98 
99 		break;
100 	default:
101 		pr_err("switch case %#x not processed\n",
102 		       pled->ledpin);
103 		break;
104 	}
105 	pled->ledon = false;
106 }
107 
108 void rtl8723be_init_sw_leds(struct ieee80211_hw *hw)
109 {
110 	struct rtl_priv *rtlpriv = rtl_priv(hw);
111 
112 	_rtl8723be_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
113 	_rtl8723be_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
114 }
115 
116 static void _rtl8723be_sw_led_control(struct ieee80211_hw *hw,
117 				      enum led_ctl_mode ledaction)
118 {
119 	struct rtl_priv *rtlpriv = rtl_priv(hw);
120 	struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
121 
122 	switch (ledaction) {
123 	case LED_CTL_POWER_ON:
124 	case LED_CTL_LINK:
125 	case LED_CTL_NO_LINK:
126 		rtl8723be_sw_led_on(hw, pled0);
127 		break;
128 	case LED_CTL_POWER_OFF:
129 		rtl8723be_sw_led_off(hw, pled0);
130 		break;
131 	default:
132 		break;
133 	}
134 }
135 
136 void rtl8723be_led_control(struct ieee80211_hw *hw,
137 			   enum led_ctl_mode ledaction)
138 {
139 	struct rtl_priv *rtlpriv = rtl_priv(hw);
140 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
141 
142 	if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
143 	    (ledaction == LED_CTL_TX ||
144 	     ledaction == LED_CTL_RX ||
145 	     ledaction == LED_CTL_SITE_SURVEY ||
146 	     ledaction == LED_CTL_LINK ||
147 	     ledaction == LED_CTL_NO_LINK ||
148 	     ledaction == LED_CTL_START_TO_LINK ||
149 	     ledaction == LED_CTL_POWER_ON)) {
150 		return;
151 	}
152 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d,\n", ledaction);
153 	_rtl8723be_sw_led_control(hw, ledaction);
154 }
155