Douglas Anderson 80e8eaab5e soc: qcom: geni: Optimize/comment select fifo/dma mode
The functions geni_se_select_fifo_mode() and
geni_se_select_fifo_mode() are a little funny.  They read/write a
bunch of memory mapped registers even if they don't change or aren't
relevant for the current protocol.  Let's make them a little more
sane.  We'll also add a comment explaining why we don't do some of the
operations for UART.

NOTE: there is no evidence at all that this makes any performance
difference and it fixes no bugs.  However, it seems (to me) like it
makes the functions a little easier to understand.  Decreasing the
amount of times we read/write memory mapped registers is also nice,
even if we are using "relaxed" variants.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20201013142448.v2.3.I646736d3969dc47de8daceb379c6ba85993de9f4@changeid
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-10-26 10:29:19 -05:00
..
2020-10-24 10:33:08 -07:00
2020-10-24 10:44:18 -07:00
2020-10-24 10:39:22 -07:00
2020-04-03 10:49:52 -07:00