Add ACPI support to I2C QUP driver and get properties from ACPI table. Add support to the I2C QUP driver to correctly handle SMBus block reads by checking I2C_M_RECV_LEN flag and reading the first byte received as the message length. Documentation for the two properites used from ACPI will be submitted through dsd@xxxxxxxxxx to https://github.com/ahs3/dsd. The documentation submitted will be the following: property-set: I2C Device Properties set-type: definition vendor: Qualcomm Technologies, Inc. bus: acpi device-id: QCOM8010 revision: 0 derived-from: /Qualcomm/acpi/QCOM8010/0 property: clock-frequency type: integer description: Defines the target clock frequency of the I2C bus. values: integer: 0..20000000 description: integer value in hertz example: Package (2) { "clock-frequency", 100000 } property: src-clock-hz type: integer description: If present, defines the source clock frequency input into the I2C QUP controller values: integer: 100000..1000000000 description: integer value in hertz example: Package (2) { "src-clock-hz", 20000000} [V5] - remove warning and use correct ACPI function [V4] - correct error code - remove warning for fall back to default clock frequency [V3] - clean up unused variables - use constant instead of variable for smbus length field [V2] - rework the smbus block read and break into separate function - clean up redundant checks and variables Naveen Kaje (2): i2c: qup: add ACPI support i2c: qup: support SMBus block read drivers/i2c/busses/i2c-qup.c | 126 ++++++++++++++++++++++++++++++++++++------- 1 file changed, 107 insertions(+), 19 deletions(-) -- Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
