spi: sh-msiof: Use core message handling instead of spi-bitbang

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The only remaining feature of spi-bitbang used by this driver is the
chipselect() callback, which just does conditional GPIO.
This is handled fine by the SPI core's spi_set_cs(), hence switch the
driver to use the core message handling through our own transfer_one()
method.

As the (optional) GPIO CS is no longer deasserted at spi_master.setup()
time (through spi_bitbang_setup() and the spi_bitbang.chipselect()
callback), we now have to take care of that ourselves.

Remove the call to spi_master_put() in sh_msiof_spi_remove(), as our SPI
master is now registered using devm_spi_register_master()
(spi_bitbang_start() uses the non-managed version).

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Geert Uytterhoeven 2014-02-25 11:21:13 +01:00 • committed by Mark Brown

parent 2416289c71

commit 1bd6363bc0

2 changed files with 20 additions and 48 deletions

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drivers/spi/Kconfig

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67

drivers/spi/spi-sh-msiof.c

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