diff options
| author | Yidi Lin <yidi.lin@mediatek.com> | 2016-03-15 14:38:44 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-03-21 23:10:55 +0100 |
| commit | d33ebd13741b7473e93a1a6780edbb1e2dca8258 (patch) | |
| tree | 66fd6e199ad63397f4d2c3fbb16debb088231c91 /src/include/device | |
| parent | f7d4f73053f0c26bfe411a9f3ef86f98389538b5 (diff) | |
device: Add i2c read/write register field API
i2c_read_field() - read the value from the specific register field
i2c_write_field() - write the value to the specific register field
BRANCH=none
BUG=none
TEST=none
Change-Id: I2098715b4583c1936c93b3ff45ec330910964304
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 0817fc76d07491b39c066f1393a6435f0831b50c
Original-Change-Id: I92c187a89d10cfcecf3dfd9291e0bc015459c393
Original-Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/332712
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/14105
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/include/device')
| -rw-r--r-- | src/include/device/i2c.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/device/i2c.h b/src/include/device/i2c.h index 8e59ba7c21..b152bb98c2 100644 --- a/src/include/device/i2c.h +++ b/src/include/device/i2c.h @@ -45,6 +45,11 @@ void software_i2c_wedge_ack(unsigned bus, u8 chip); void software_i2c_wedge_read(unsigned bus, u8 chip, u8 reg, int bit_count); void software_i2c_wedge_write(unsigned bus, u8 chip, u8 reg, int bit_count); +int i2c_read_field(unsigned bus, uint8_t chip, uint8_t reg, uint8_t *data, + uint8_t mask, uint8_t shift); +int i2c_write_field(unsigned bus, uint8_t chip, uint8_t reg, uint8_t data, + uint8_t mask, uint8_t shift); + /* * software_i2c is supposed to be a debug feature. It's usually not compiled in, * but when it is it can be dynamically enabled at runtime for certain busses. |