From: Jiri Pirko <j...@mellanox.com> Vadim says:
This patchset adds I2C access support for SwitchX, SwitchX2, SwitchIB, SwitchIB2 and Spectrum silicones. It contains: - Small changes in mlxsw core code, needed for I2C bus support; - I2C driver, which obtains I2C input/output mailboxes setting and provides command interface implementation. - Minimal driver, which works on top of I2C driver and allows running of mlxsw command interface over I2C bus; Use case: On system, which does not have PCI to ASIC (BMC), hwmon functionality (sensors, pwm, tacho) will be available through I2C. Usage (manual probing): echo mlxsw_minimal 0x48 > /sys/bus/i2c/devices/i2c-2/new_device Sysfs interface: /sys/bus/i2c/devices/2-0048/hwmon/hwmon5/pwm1 /sys/bus/i2c/devices/2-0048/hwmon/hwmon5/temp1_input Vadim Pasternak (4): mlxsw: Add bus capability flag mlxsw: Introduce support for I2C bus mlxsw: Invoke driver's init/fini methods only if defined mlxsw: minimal: Add I2C support for Mellanox ASICs drivers/net/ethernet/mellanox/mlxsw/Kconfig | 21 + drivers/net/ethernet/mellanox/mlxsw/Makefile | 4 + drivers/net/ethernet/mellanox/mlxsw/core.c | 20 +- drivers/net/ethernet/mellanox/mlxsw/core.h | 3 + drivers/net/ethernet/mellanox/mlxsw/i2c.c | 582 ++++++++++++++++++++++++++ drivers/net/ethernet/mellanox/mlxsw/i2c.h | 60 +++ drivers/net/ethernet/mellanox/mlxsw/minimal.c | 97 +++++ drivers/net/ethernet/mellanox/mlxsw/pci.c | 1 + 8 files changed, 783 insertions(+), 5 deletions(-) create mode 100644 drivers/net/ethernet/mellanox/mlxsw/i2c.c create mode 100644 drivers/net/ethernet/mellanox/mlxsw/i2c.h create mode 100644 drivers/net/ethernet/mellanox/mlxsw/minimal.c -- 2.7.4
