1 /******************************************************************************
2  *
3  * Copyright(c) 2009-2012  Realtek Corporation. All rights reserved.
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  * You should have received a copy of the GNU General Public License along with
15  * this program; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17  *
18  * The full GNU General Public License is included in this distribution in the
19  * file called LICENSE.
20  *
21  * Contact Information:
22  * wlanfae <wlanfae@realtek.com>
23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24  * Hsinchu 300, Taiwan.
25  *
26  *****************************************************************************/
27 
28 #include "../wifi.h"
29 #include "../usb.h"
30 #include "reg.h"
31 #include "led.h"
32 
33 static void _rtl92cu_init_led(struct ieee80211_hw *hw,
34 			      struct rtl_led *pled, enum rtl_led_pin ledpin)
35 {
36 	pled->hw = hw;
37 	pled->ledpin = ledpin;
38 	pled->ledon = false;
39 }
40 
41 static void _rtl92cu_deInit_led(struct rtl_led *pled)
42 {
43 }
44 
45 void rtl92cu_sw_led_on(struct ieee80211_hw *hw, struct rtl_led *pled)
46 {
47 	u8 ledcfg;
48 	struct rtl_priv *rtlpriv = rtl_priv(hw);
49 
50 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
51 		 REG_LEDCFG2, pled->ledpin);
52 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
53 	switch (pled->ledpin) {
54 	case LED_PIN_GPIO0:
55 		break;
56 	case LED_PIN_LED0:
57 		rtl_write_byte(rtlpriv,
58 			       REG_LEDCFG2, (ledcfg & 0xf0) | BIT(5) | BIT(6));
59 		break;
60 	case LED_PIN_LED1:
61 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg & 0x0f) | BIT(5));
62 		break;
63 	default:
64 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
65 			 "switch case not processed\n");
66 		break;
67 	}
68 	pled->ledon = true;
69 }
70 
71 void rtl92cu_sw_led_off(struct ieee80211_hw *hw, struct rtl_led *pled)
72 {
73 	struct rtl_priv *rtlpriv = rtl_priv(hw);
74 	struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
75 	u8 ledcfg;
76 
77 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "LedAddr:%X ledpin=%d\n",
78 		 REG_LEDCFG2, pled->ledpin);
79 	ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG2);
80 	switch (pled->ledpin) {
81 	case LED_PIN_GPIO0:
82 		break;
83 	case LED_PIN_LED0:
84 		ledcfg &= 0xf0;
85 		if (usbpriv->ledctl.led_opendrain)
86 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
87 				       (ledcfg | BIT(1) | BIT(5) | BIT(6)));
88 		else
89 			rtl_write_byte(rtlpriv, REG_LEDCFG2,
90 				       (ledcfg | BIT(3) | BIT(5) | BIT(6)));
91 		break;
92 	case LED_PIN_LED1:
93 		ledcfg &= 0x0f;
94 		rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg | BIT(3)));
95 		break;
96 	default:
97 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
98 			 "switch case not processed\n");
99 		break;
100 	}
101 	pled->ledon = false;
102 }
103 
104 void rtl92cu_init_sw_leds(struct ieee80211_hw *hw)
105 {
106 	struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
107 	_rtl92cu_init_led(hw, &(usbpriv->ledctl.sw_led0), LED_PIN_LED0);
108 	_rtl92cu_init_led(hw, &(usbpriv->ledctl.sw_led1), LED_PIN_LED1);
109 }
110 
111 void rtl92cu_deinit_sw_leds(struct ieee80211_hw *hw)
112 {
113 	struct rtl_usb_priv *usbpriv = rtl_usbpriv(hw);
114 	_rtl92cu_deInit_led(&(usbpriv->ledctl.sw_led0));
115 	_rtl92cu_deInit_led(&(usbpriv->ledctl.sw_led1));
116 }
117 
118 static void _rtl92cu_sw_led_control(struct ieee80211_hw *hw,
119 				    enum led_ctl_mode ledaction)
120 {
121 }
122 
123 void rtl92cu_led_control(struct ieee80211_hw *hw,
124 			enum led_ctl_mode ledaction)
125 {
126 	struct rtl_priv *rtlpriv = rtl_priv(hw);
127 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
128 
129 	if ((ppsc->rfoff_reason > RF_CHANGE_BY_PS) &&
130 	    (ledaction == LED_CTL_TX ||
131 	     ledaction == LED_CTL_RX ||
132 	     ledaction == LED_CTL_SITE_SURVEY ||
133 	     ledaction == LED_CTL_LINK ||
134 	     ledaction == LED_CTL_NO_LINK ||
135 	     ledaction == LED_CTL_START_TO_LINK ||
136 	     ledaction == LED_CTL_POWER_ON)) {
137 		return;
138 	}
139 	RT_TRACE(rtlpriv, COMP_LED, DBG_LOUD, "ledaction %d\n", ledaction);
140 	_rtl92cu_sw_led_control(hw, ledaction);
141 }
142