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path: root/drivers/spi/spi-sun4i.c
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*-. Merge remote-tracking branches 'spi/topic/sun4i', 'spi/topic/topcliff-pch' ↵Mark Brown2016-01-111-4/+4
|\ \ | | | | | | | | | and 'spi/topic/zynq' into spi-next
| * | spi: sun4i: allow transfers to set transmission speedMarcus Weseloh2015-11-181-4/+4
| |/ | | | | | | | | | | | | | | | | Allow transfers to set the transmission speed rather than using the device max_speed_hz value. The SPI core makes sure that the speed_hz value is always set on the transfer. Signed-off-by: Marcus Weseloh <mweseloh42@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi: sun4i: Prevent chip-select from being activated twice before a transferMarcus Weseloh2016-01-071-3/+3
|/ | | | | | | | | | | | | | | | The SPI core calls set_cs before a transfer, but the SUN4I_CTL_CS_MANUAL flag is only set in transfer_one. This leads to the following pattern on the chip-select line (with runtime power-management on every transfer, without it only on the first one): activate, deactivate, activate, transfer, deactivate Moving the configuration of the SUN4I_CTL_CS_MANUAL flag from transfer_one to set_cs removes the double activation. Signed-off-by: Marcus Weseloh <mweseloh42@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* spi: Remove unneeded include of linux/workqueue.hAxel Lin2014-04-141-1/+0
| | | | | Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi: sun4i: Set bits_per_word_mask to only support 8 bits word lengthAxel Lin2014-03-041-0/+1
| | | | | | | | | | This controller only supports 8 bits word length. Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi: sunxi: Add Allwinner A10 SPI controller driverMaxime Ripard2014-02-231-0/+477
The older Allwinner SoCs (A10, A13, A10s and A20) all have the same SPI controller. Unfortunately, this SPI controller, even though quite similar, is significantly different from the recently supported A31 SPI controller (different registers offset, split/merged registers, etc.). Supporting both controllers in a single driver would be unreasonable, hence the addition of a new driver. Like its more recent counterpart, it supports DMA, but the driver only does PIO until we have a dmaengine driver for this platform. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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