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 _rtl92ce_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 rtl92ce_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, "LedAddr:%X ledpin=%d\n",
45 		 REG_LEDCFG2, pled->ledpin);
46 
47 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
48 
49 	switch (pled->ledpin) {
50 	case LED_PIN_GPIO0:
51 		break;
52 	case LED_PIN_LED0:
53 		rtl_write_byte(rtlpriv,
54 			       REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
55 		break;
56 	case LED_PIN_LED1:
57 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
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 rtl92ce_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, "LedAddr:%X ledpin=%d\n",
73 		 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 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
84 				       (ledcfg | BIT(1) | BIT(5) | BIT(6)));
85 		else
86 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
87 				       (ledcfg | BIT(3) | BIT(5) | BIT(6)));
88 		break;
89 	case LED_PIN_LED1:
90 		ledcfg &= 0x0f;
91 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
92 		break;
93 	default:
94 		pr_info("switch case %#x not processed\n", pled->ledpin);
95 		break;
96 	}
97 	pled->ledon = false;
98 }
99 
100 void rtl92ce_init_sw_leds(struct ieee80211_hw *hw)
101 {
102 	struct rtl_priv *rtlpriv = rtl_priv(hw);
103 
104 	_rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led0, LED_PIN_LED0);
105 	_rtl92ce_init_led(hw, &rtlpriv->ledctl.sw_led1, LED_PIN_LED1);
106 }
107 
108 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
109 				    enum led_ctl_mode ledaction)
110 {
111 	struct rtl_priv *rtlpriv = rtl_priv(hw);
112 	struct rtl_led *pled0 = &rtlpriv->ledctl.sw_led0;
113 
114 	switch (ledaction) {
115 	case LED_CTL_POWER_ON:
116 	case LED_CTL_LINK:
117 	case LED_CTL_NO_LINK:
118 		rtl92ce_sw_led_on(hw, pled0);
119 		break;
120 	case LED_CTL_POWER_OFF:
121 		rtl92ce_sw_led_off(hw, pled0);
122 		break;
123 	default:
124 		break;
125 	}
126 }
127 
128 void rtl92ce_led_control(struct ieee80211_hw *hw,
129 			enum led_ctl_mode ledaction)
130 {
131 	struct rtl_priv *rtlpriv = rtl_priv(hw);
132 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
133 
134 	if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
135 	    (ledaction == LED_CTL_TX ||
136 	     ledaction == LED_CTL_RX ||
137 	     ledaction == LED_CTL_SITE_SURVEY ||
138 	     ledaction == LED_CTL_LINK ||
139 	     ledaction == LED_CTL_NO_LINK ||
140 	     ledaction == LED_CTL_START_TO_LINK ||
141 	     ledaction == LED_CTL_POWER_ON)) {
142 		return;
143 	}
144 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n",
145 		 ledaction);
146 	_rtl92ce_sw_led_control(hw, ledaction);
147 }
148