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| author | Eduardo Valentin <eduardo.valentin@nokia.com> | 2009-08-08 08:46:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-12 12:19:20 -0300 |
| commit | 02bee89e79b1302776e32214b8ca96a00c70c446 (patch) | |
| tree | de3ee880d3cb3bf2e3e98d9af4152338bf6d3061 /include/media/si4713.h | |
| parent | 1fd2121c08eeef2e9a792719628a467e0fe97b96 (diff) | |
| download | lwn-02bee89e79b1302776e32214b8ca96a00c70c446.tar.gz lwn-02bee89e79b1302776e32214b8ca96a00c70c446.zip | |
V4L/DVB (12552): FM TX: si4713: Add files to handle si4713 i2c device
This patch adds files to control si4713 devices.
Internal functions to control device properties
and initialization procedures are into these files.
Also, a v4l2 subdev interface is also exported.
This way other drivers can use this as v4l2 i2c subdevice.
Signed-off-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/si4713.h')
| -rw-r--r-- | include/media/si4713.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/include/media/si4713.h b/include/media/si4713.h new file mode 100644 index 000000000000..99850a54ed09 --- /dev/null +++ b/include/media/si4713.h @@ -0,0 +1,49 @@ +/* + * include/media/si4713.h + * + * Board related data definitions for Si4713 i2c device driver. + * + * Copyright (c) 2009 Nokia Corporation + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + * + */ + +#ifndef SI4713_H +#define SI4713_H + +/* The SI4713 I2C sensor chip has a fixed slave address of 0xc6 or 0x22. */ +#define SI4713_I2C_ADDR_BUSEN_HIGH 0x63 +#define SI4713_I2C_ADDR_BUSEN_LOW 0x11 + +/* + * Platform dependent definition + */ +struct si4713_platform_data { + /* Set power state, zero is off, non-zero is on. */ + int (*set_power)(int power); +}; + +/* + * Structure to query for Received Noise Level (RNL). + */ +struct si4713_rnl { + __u32 index; /* modulator index */ + __u32 frequency; /* frequency to peform rnl measurement */ + __s32 rnl; /* result of measurement in dBuV */ + __u32 reserved[4]; /* drivers and apps must init this to 0 */ +}; + +/* + * This is the ioctl number to query for rnl. Users must pass a + * struct si4713_rnl pointer specifying desired frequency in 'frequency' field + * following driver capabilities (i.e V4L2_TUNER_CAP_LOW). + * Driver must return measured value in the same struture, filling 'rnl' field. + */ +#define SI4713_IOC_MEASURE_RNL _IOWR('V', BASE_VIDIOC_PRIVATE + 0, \ + struct si4713_rnl) + +#endif /* ifndef SI4713_H*/ |