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  * 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 _rtl8723e_init_led(struct ieee80211_hw *hw,
32 			       struct rtl_led *pled, enum rtl_led_pin ledpin)
33 {
34 	pled->hw = hw;
35 	pled->ledpin = ledpin;
36 	pled->ledon = false;
37 }
38 
39 void rtl8723e_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,
54 			       REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5));
55 		break;
56 	case LED_PIN_LED1:
57 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
58 		rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg & 0x10);
59 		break;
60 	default:
61 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
62 			 "switch case %#x not processed\n", pled->ledpin);
63 		break;
64 	}
65 	pled->ledon = true;
66 }
67 
68 void rtl8723e_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
69 {
70 	struct rtl_priv *rtlpriv = rtl_priv(hw);
71 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
72 	u8 ledcfg;
73 
74 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD,
75 		 "LedAddr:%X ledpin=%d\n", REG_LEDCFG2, pled->ledpin);
76 
77 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
78 
79 	switch (pled->ledpin) {
80 	case LED_PIN_GPIO0:
81 		break;
82 	case LED_PIN_LED0:
83 		ledcfg &= 0xf0;
84 		if (pcipriv->ledctl.led_opendrain) {
85 			ledcfg &= 0x90; /* Set to software control. */
86 			rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
87 			ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
88 			ledcfg &= 0xFE;
89 			rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
90 		} else {
91 			ledcfg &= ~BIT(6);
92 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
93 					(ledcfg | BIT(3) | BIT(5)));
94 		}
95 		break;
96 	case LED_PIN_LED1:
97 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
98 		ledcfg &= 0x10; /* Set to software control. */
99 		rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
100 
101 		break;
102 	default:
103 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
104 			 "switch case %#x not processed\n", pled->ledpin);
105 		break;
106 	}
107 	pled->ledon = false;
108 }
109 
110 void rtl8723e_init_sw_leds(struct ieee80211_hw *hw)
111 {
112 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
113 	_rtl8723e_init_led(hw, &pcipriv->ledctl.sw_led0, LED_PIN_LED0);
114 	_rtl8723e_init_led(hw, &pcipriv->ledctl.sw_led1, LED_PIN_LED1);
115 }
116 
117 static void _rtl8723e_sw_led_control(struct ieee80211_hw *hw,
118 				     enum led_ctl_mode ledaction)
119 {
120 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
121 	struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
122 	switch (ledaction) {
123 	case LED_CTL_POWER_ON:
124 	case LED_CTL_LINK:
125 	case LED_CTL_NO_LINK:
126 		rtl8723e_sw_led_on(hw, pLed0);
127 		break;
128 	case LED_CTL_POWER_OFF:
129 		rtl8723e_sw_led_off(hw, pLed0);
130 		break;
131 	default:
132 		break;
133 	}
134 }
135 
136 void rtl8723e_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",
153 		 ledaction);
154 	_rtl8723e_sw_led_control(hw, ledaction);
155 }
156