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twl4030-madc.h
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1 /*
2  * twl4030_madc.h - Header for TWL4030 MADC
3  *
4  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
5  * J Keerthy <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * version 2 as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19  * 02110-1301 USA
20  *
21  */
22 
23 #ifndef _TWL4030_MADC_H
24 #define _TWL4030_MADC_H
25 
31 };
32 
33 #define TWL4030_MADC_MAX_CHANNELS 16
34 
35 
36 /*
37  * twl4030_madc_request- madc request packet for channel conversion
38  * @channels: 16 bit bitmap for individual channels
39  * @do_avgP: sample the input channel for 4 consecutive cycles
40  * @method: RT, SW1, SW2
41  * @type: Polling or interrupt based method
42  */
43 
45  unsigned long channels;
49  bool active;
52  void (*func_cb)(int len, int channels, int *buf);
53 };
54 
60 };
61 
66 };
67 
68 #define TWL4030_MADC_CTRL1 0x00
69 #define TWL4030_MADC_CTRL2 0x01
70 
71 #define TWL4030_MADC_RTSELECT_LSB 0x02
72 #define TWL4030_MADC_SW1SELECT_LSB 0x06
73 #define TWL4030_MADC_SW2SELECT_LSB 0x0A
74 
75 #define TWL4030_MADC_RTAVERAGE_LSB 0x04
76 #define TWL4030_MADC_SW1AVERAGE_LSB 0x08
77 #define TWL4030_MADC_SW2AVERAGE_LSB 0x0C
78 
79 #define TWL4030_MADC_CTRL_SW1 0x12
80 #define TWL4030_MADC_CTRL_SW2 0x13
81 
82 #define TWL4030_MADC_RTCH0_LSB 0x17
83 #define TWL4030_MADC_GPCH0_LSB 0x37
84 
85 #define TWL4030_MADC_MADCON (1 << 0) /* MADC power on */
86 #define TWL4030_MADC_BUSY (1 << 0) /* MADC busy */
87 /* MADC conversion completion */
88 #define TWL4030_MADC_EOC_SW (1 << 1)
89 /* MADC SWx start conversion */
90 #define TWL4030_MADC_SW_START (1 << 5)
91 #define TWL4030_MADC_ADCIN0 (1 << 0)
92 #define TWL4030_MADC_ADCIN1 (1 << 1)
93 #define TWL4030_MADC_ADCIN2 (1 << 2)
94 #define TWL4030_MADC_ADCIN3 (1 << 3)
95 #define TWL4030_MADC_ADCIN4 (1 << 4)
96 #define TWL4030_MADC_ADCIN5 (1 << 5)
97 #define TWL4030_MADC_ADCIN6 (1 << 6)
98 #define TWL4030_MADC_ADCIN7 (1 << 7)
99 #define TWL4030_MADC_ADCIN8 (1 << 8)
100 #define TWL4030_MADC_ADCIN9 (1 << 9)
101 #define TWL4030_MADC_ADCIN10 (1 << 10)
102 #define TWL4030_MADC_ADCIN11 (1 << 11)
103 #define TWL4030_MADC_ADCIN12 (1 << 12)
104 #define TWL4030_MADC_ADCIN13 (1 << 13)
105 #define TWL4030_MADC_ADCIN14 (1 << 14)
106 #define TWL4030_MADC_ADCIN15 (1 << 15)
107 
108 /* Fixed channels */
109 #define TWL4030_MADC_BTEMP TWL4030_MADC_ADCIN1
110 #define TWL4030_MADC_VBUS TWL4030_MADC_ADCIN8
111 #define TWL4030_MADC_VBKB TWL4030_MADC_ADCIN9
112 #define TWL4030_MADC_ICHG TWL4030_MADC_ADCIN10
113 #define TWL4030_MADC_VCHG TWL4030_MADC_ADCIN11
114 #define TWL4030_MADC_VBAT TWL4030_MADC_ADCIN12
115 
116 /* Step size and prescaler ratio */
117 #define TEMP_STEP_SIZE 147
118 #define TEMP_PSR_R 100
119 #define CURR_STEP_SIZE 147
120 #define CURR_PSR_R1 44
121 #define CURR_PSR_R2 88
122 
123 #define TWL4030_BCI_BCICTL1 0x23
124 #define TWL4030_BCI_CGAIN 0x020
125 #define TWL4030_BCI_MESBAT (1 << 1)
126 #define TWL4030_BCI_TYPEN (1 << 4)
127 #define TWL4030_BCI_ITHEN (1 << 3)
128 
129 #define REG_BCICTL2 0x024
130 #define TWL4030_BCI_ITHSENS 0x007
131 
132 /* Register and bits for GPBR1 register */
133 #define TWL4030_REG_GPBR1 0x0c
134 #define TWL4030_GPBR1_MADC_HFCLK_EN (1 << 7)
135 
137  int channel;
138  int average;
139  int status;
141 };
142 
144 int twl4030_get_madc_conversion(int channel_no);
145 #endif