Motivation here is to improve debug prints and while doing so to remove
some duplication and separate timing parameter validation from actual
register writes as this parameter validation and/or calculation is
needed to do only during probe.
Currently debug code prints SCL timing parameters whenever HW is
reinitialized but doesn't print importand SDA hold time nor actual bus
speed the controller is going to operate.
v3:
- Fail always if i2c_dw_acquire_lock() returns an error.
- Keep include statement order
- Remove redundant "ret = 0; " assignment from i2c_dw_set_sda_hold()
v2:
- SDA hold time configuration moved from "Separate timing parameter
setting from HW initalization" patch to a new patch as well as
i2c_dw_clk_rate() cleanup.
- New patch replacing ___constant_swab32() with swab32().
- Added Andys review by tags to patches 1-2.
Jarkko Nikula (8):
i2c: designware: Remove needless variable from i2c_dw_init_slave()
i2c: designware: Move register access detection to common code
i2c: designware: Don't use internal ___constant_swab32
i2c: designware: Call i2c_dw_clk_rate() only once in
i2c_dw_init_master()
i2c: designware: Move SDA hold time configuration to common code
i2c: designware: Separate timing parameter setting from HW
initalization
i2c: designware: Add debug print for SDA hold time value
i2c: designware: Add debug print for bus speed
drivers/i2c/busses/i2c-designware-common.c | 75 ++++++++
drivers/i2c/busses/i2c-designware-core.h | 2 +
drivers/i2c/busses/i2c-designware-master.c | 190 ++++++++++++---------
drivers/i2c/busses/i2c-designware-slave.c | 46 +----
4 files changed, 195 insertions(+), 118 deletions(-)
--
2.17.1
