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| author | Wolfgang Denk <wd@pollux.denx.de> | 2006-11-30 02:01:32 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2006-11-30 02:01:32 +0100 |
| commit | ab07b6c221da99442b6c93986ca30607c6289bf0 (patch) | |
| tree | 610bccb5c1ebd790004268f1efc3a4f29ed3d3bb /include/i2c.h | |
| parent | 8d9a8610b8256331132227e9e6585c6bd5742787 (diff) | |
| parent | 1939d969443ccf316cab2bf32ab1027d4db5ba1a (diff) | |
| download | u-boot-imx-ab07b6c221da99442b6c93986ca30607c6289bf0.zip u-boot-imx-ab07b6c221da99442b6c93986ca30607c6289bf0.tar.gz u-boot-imx-ab07b6c221da99442b6c93986ca30607c6289bf0.tar.bz2 | |
Merge with http://opensource.freescale.com/pub/scm/u-boot-83xx.git
Diffstat (limited to 'include/i2c.h')
| -rw-r--r-- | include/i2c.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index 6d39080..a8f729a 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -82,4 +82,49 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len); uchar i2c_reg_read (uchar chip, uchar reg); void i2c_reg_write(uchar chip, uchar reg, uchar val); +/* + * Functions for setting the current I2C bus and its speed + */ + +/* + * i2c_set_bus_num: + * + * Change the active I2C bus. Subsequent read/write calls will + * go to this one. + * + * bus - bus index, zero based + * + * Returns: 0 on success, not 0 on failure + * + */ +int i2c_set_bus_num(unsigned int bus); + +/* + * i2c_get_bus_num: + * + * Returns index of currently active I2C bus. Zero-based. + */ + +unsigned int i2c_get_bus_num(void); + +/* + * i2c_set_bus_speed: + * + * Change the speed of the active I2C bus + * + * speed - bus speed in Hz + * + * Returns: 0 on success, not 0 on failure + * + */ +int i2c_set_bus_speed(unsigned int); + +/* + * i2c_get_bus_speed: + * + * Returns speed of currently active I2C bus in Hz + */ + +unsigned int i2c_get_bus_speed(void); + #endif /* _I2C_H_ */ |