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 rtl92de_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 	switch (pled->ledpin) {
48 	case LED_PIN_GPIO0:
49 		break;
50 	case LED_PIN_LED0:
51 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
52 
53 		if ((rtlpriv->efuse.eeprom_did == 0x8176) ||
54 			(rtlpriv->efuse.eeprom_did == 0x8193))
55 			/* BIT7 of REG_LEDCFG2 should be set to
56 			 * make sure we could emit the led2. */
57 			rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
58 				       BIT(7) | BIT(5) | BIT(6));
59 		else
60 			rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0xf0) |
61 				       BIT(7) | BIT(5));
62 		break;
63 	case LED_PIN_LED1:
64 		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
65 
66 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
67 		break;
68 	default:
69 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
70 			 "switch case %#x not processed\n", pled->ledpin);
71 		break;
72 	}
73 	pled->ledon = true;
74 }
75 
76 void rtl92de_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
77 {
78 	struct rtl_priv *rtlpriv = rtl_priv(hw);
79 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
80 	u8 ledcfg;
81 
82 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
83 		 REG_LEDCFG2, pled->ledpin);
84 
85 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
86 
87 	switch (pled->ledpin) {
88 	case LED_PIN_GPIO0:
89 		break;
90 	case LED_PIN_LED0:
91 		ledcfg &= 0xf0;
92 		if (pcipriv->ledctl.led_opendrain)
93 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
94 				       (ledcfg | BIT(1) | BIT(5) | BIT(6)));
95 		else
96 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
97 				       (ledcfg | BIT(3) | BIT(5) | BIT(6)));
98 		break;
99 	case LED_PIN_LED1:
100 		ledcfg &= 0x0f;
101 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
102 		break;
103 	default:
104 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
105 			 "switch case %#x not processed\n", pled->ledpin);
106 		break;
107 	}
108 	pled->ledon = false;
109 }
110 
111 void rtl92de_init_sw_leds(struct ieee80211_hw *hw)
112 {
113 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
114 	_rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led0), LED_PIN_LED0);
115 	_rtl92ce_init_led(hw, &(pcipriv->ledctl.sw_led1), LED_PIN_LED1);
116 }
117 
118 static void _rtl92ce_sw_led_control(struct ieee80211_hw *hw,
119 				    enum led_ctl_mode ledaction)
120 {
121 	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
122 	struct rtl_led *pLed0 = &(pcipriv->ledctl.sw_led0);
123 	switch (ledaction) {
124 	case LED_CTL_POWER_ON:
125 	case LED_CTL_LINK:
126 	case LED_CTL_NO_LINK:
127 		rtl92de_sw_led_on(hw, pLed0);
128 		break;
129 	case LED_CTL_POWER_OFF:
130 		rtl92de_sw_led_off(hw, pLed0);
131 		break;
132 	default:
133 		break;
134 	}
135 }
136 
137 void rtl92de_led_control(struct ieee80211_hw *hw, 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 
154 	_rtl92ce_sw_led_control(hw, ledaction);
155 }
156