Commit Graph

6 Commits

Author SHA1 Message Date
Anup Patel
b126ce4a8f lib: utils/i2c: Use kconfig for enabling/disabling drivers
We update i2c drivers makefile to use kconfig for enabling/disabling
drivers. To avoid compile errors, we also enable appropriate i2c
drivers for each platform.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Tested-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Atish Patra <atishp@rivosinc.com>
Tested-by: Atish Patra <atishp@rivosinc.com>
2022-08-08 09:33:57 +05:30
Anup Patel
998ed43fde lib: utils/i2c: Generate FDT i2c adapter driver list at compile-time
Instead of having FDT i2c adapter driver list hard-coded in the C source,
we generate it using carray.sh at compile-time.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
2022-05-13 09:26:45 +05:30
Jukka Laitinen
5d025eb235 lib: fix pointer of type 'void *' used in arithmetic
Using "void *" in arithmetic causes errors with strict compiler settings:
"error: pointer of type 'void *' used in arithmetic [-Werror=pointer-arith]"

Avoid these by calculating on "char *" where 1-byte data size is assumed.

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2022-01-21 21:58:12 +05:30
Nikita Shubin
13a1158d24 lib: utils/i2c: Add minimal SiFive I2C driver
Minimum SiFive I2C driver to read/send bytes over I2C bus.

This allows querying information and perform operation of onboard PMIC,
as well as power-off and reset.

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
2021-11-12 10:29:08 +05:30
Nikita Shubin
6ca6bcafb7 lib: utils/i2c: Add simple FDT based I2C framework
FDT based I2C framework on the top of I2C library.

The drivers are probed on demand by fdt_i2c_adapter_get
function.

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
2021-11-12 10:19:45 +05:30
Nikita Shubin
2c964a2e15 lib: utils/i2c: Add generic I2C configuration library
Helper library to keep track of registered I2C adapters,
identified by dts offset, basic send/read functions and
adapter configuration (enable, set dividers, etc...).

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
2021-11-12 10:17:50 +05:30