Linux Kernel  3.7.1
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led.c
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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 <[email protected]>
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 
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 
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 
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 }