diff options
| author | Gwendal Grignou <gwendal@chromium.org> | 2015-06-13 19:41:24 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-06-17 13:10:58 +0000 |
| commit | cca70a517b21d32e45880d1296997436d026e7b7 (patch) | |
| tree | 1c37f28074f4d9050070d7a540780fd592ff9719 /include/i2c.h | |
| parent | b33531e262561e297ba1a02fc829a2110c6df515 (diff) | |
| download | chrome-ec-cca70a517b21d32e45880d1296997436d026e7b7.tar.gz | |
common: Add i2c 32bit read/write
Add functions and associated test to read/write a 32 bit register
BRANCH=smaug
TEST=Test on smaug with bm160 driver
BUG=chromium:39900
Change-Id: Ieff24b65f1eb8610874fe13c4a8fadf583a218cb
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/277535
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include/i2c.h')
| -rw-r--r-- | include/i2c.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index dbc51eebbd..674dd84e80 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -162,6 +162,18 @@ void i2c_prepare_sysjump(void); void i2c_set_timeout(int port, uint32_t timeout); /** + * Read a 32-bit register from the slave at 8-bit slave address <slaveaddr>, at + * the specified 8-bit <offset> in the slave's address space. + */ +int i2c_read32(int port, int slave_addr, int offset, int *data); + +/** + * Write a 32-bit register to the slave at 8-bit slave address <slaveaddr>, at + * the specified 8-bit <offset> in the slave's address space. + */ +int i2c_write32(int port, int slave_addr, int offset, int data); + +/** * Read a 16-bit register from the slave at 8-bit slave address <slaveaddr>, at * the specified 8-bit <offset> in the slave's address space. */ |