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| author | wdenk <wdenk> | 2003-03-06 21:55:29 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-03-06 21:55:29 +0000 |
| commit | 1cb8e980c41e86760fa93de63f4e4cf643bef9d9 (patch) | |
| tree | e1993fba07dea51d92f1cec4c814a67173c1f8fb /cpu/ppc4xx/i2c.c | |
| parent | 500545cc6b83958209128bffa825b3c842a21a4e (diff) | |
| download | u-boot-imx-1cb8e980c41e86760fa93de63f4e4cf643bef9d9.zip u-boot-imx-1cb8e980c41e86760fa93de63f4e4cf643bef9d9.tar.gz u-boot-imx-1cb8e980c41e86760fa93de63f4e4cf643bef9d9.tar.bz2 | |
* Patches by David Müller, 31 Jan 2003:
- minimal setup for CardBus bridges
- add EEPROM read/write support in the CS8900 driver
- add support for the builtin I2C controller in the Samsung s3c24x0 chips
- add support for MPL's VCMA9 (Samsung s3c2410 based) board
* Patch by Steven Scholz, 04 Feb 2003:
add support for RTC DS1307
* Patch by Reinhard Meyer, 5 Feb 2003:
fix PLPRCR/SCCR init sequence on 8xx to allow for
changes of EBDF by software
* Patch by Vladimir Gurevich, 07 Feb 2003:
"API-compatibility patch" for 4xx I2C driver
Diffstat (limited to 'cpu/ppc4xx/i2c.c')
| -rw-r--r-- | cpu/ppc4xx/i2c.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/cpu/ppc4xx/i2c.c b/cpu/ppc4xx/i2c.c index 7d8db9b..4bf0bbd 100644 --- a/cpu/ppc4xx/i2c.c +++ b/cpu/ppc4xx/i2c.c @@ -422,4 +422,23 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len) return (i2c_transfer( 0, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0); } +/*----------------------------------------------------------------------- + * Read a register + */ +uchar i2c_reg_read(uchar i2c_addr, uchar reg) +{ + char buf; + + i2c_read(i2c_addr, reg, 1, &buf, 1); + + return(buf); +} + +/*----------------------------------------------------------------------- + * Write a register + */ +void i2c_reg_write(uchar i2c_addr, uchar reg, uchar val) +{ + i2c_write(i2c_addr, reg, 1, &val, 1); +} #endif /* CONFIG_HARD_I2C */ |