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clocksource/drivers/fttmr010: Merge Moxa into FTTMR010

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This merges the Moxa Art timer driver into the Faraday FTTMR010
driver and replaces all Kconfig symbols to use the Faraday
driver instead. We are now so similar that the drivers can
be merged by just adding a few lines to the Faraday timer.

Differences:

- The Faraday driver explicitly sets the counter to count
  upwards for the clocksource, removing the need for the
  clocksource core to invert the value.

- The Faraday driver also handles sched_clock()

On the Aspeed, the counter can only count downwards, so support
the timers in downward-counting mode as well, and flag the
Aspeed to use this mode. This mode was tested on the Gemini so
I have high hopes that it'll work fine on the Aspeed as well.

After this we have one driver for all three SoCs and a generic
Faraday FTTMR010 timer driver, which is nice.

Cc: Joel Stanley <joel@jms.id.au>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Tested-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Linus Walleij
2017-05-18 22:17:04 +02:00
committed by Daniel Lezcano
parent b589da8b26
commit ec14ba1ec5
6 changed files with 107 additions and 302 deletions
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7
drivers/clocksource/Kconfig
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@@ -188,13 +188,6 @@ config ATLAS7_TIMER
help
Enables support for the Atlas7 timer.
config MOXART_TIMER
bool "Moxart timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
select CLKSRC_MMIO
help
Enables support for the Moxart timer.
config MXS_TIMER
bool "Mxs timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS