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1 | /* |
2 | * include/media/si4713.h |
3 | * |
4 | * Board related data definitions for Si4713 i2c device driver. |
5 | * |
6 | * Copyright (c) 2009 Nokia Corporation |
7 | * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> |
8 | * |
9 | * This file is licensed under the terms of the GNU General Public License |
10 | * version 2. This program is licensed "as is" without any warranty of any |
11 | * kind, whether express or implied. |
12 | * |
13 | */ |
14 | |
15 | #ifndef SI4713_H |
16 | #define SI4713_H |
17 | |
18 | /* The SI4713 I2C sensor chip has a fixed slave address of 0xc6 or 0x22. */ |
19 | #define SI4713_I2C_ADDR_BUSEN_HIGH 0x63 |
20 | #define SI4713_I2C_ADDR_BUSEN_LOW 0x11 |
21 | |
22 | /* |
23 | * Platform dependent definition |
24 | */ |
25 | struct si4713_platform_data { |
26 | int gpio_reset; /* < 0 if not used */ |
27 | }; |
28 | |
29 | /* |
30 | * Structure to query for Received Noise Level (RNL). |
31 | */ |
32 | struct si4713_rnl { |
33 | __u32 index; /* modulator index */ |
34 | __u32 frequency; /* frequency to peform rnl measurement */ |
35 | __s32 rnl; /* result of measurement in dBuV */ |
36 | __u32 reserved[4]; /* drivers and apps must init this to 0 */ |
37 | }; |
38 | |
39 | /* |
40 | * This is the ioctl number to query for rnl. Users must pass a |
41 | * struct si4713_rnl pointer specifying desired frequency in 'frequency' field |
42 | * following driver capabilities (i.e V4L2_TUNER_CAP_LOW). |
43 | * Driver must return measured value in the same struture, filling 'rnl' field. |
44 | */ |
45 | #define SI4713_IOC_MEASURE_RNL _IOWR('V', BASE_VIDIOC_PRIVATE + 0, \ |
46 | struct si4713_rnl) |
47 | |
48 | #endif /* ifndef SI4713_H*/ |
49 |
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