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path: root/drivers/spi/spi-bcm63xx-hsspi.c
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2015-08-25spi/bcm63xx-hsspi: add support for dual spi read/writeJonas Gorski1-4/+9
Add support for dual read/writes on spi-bcm63xx-hsspi. This has been tested with a s25fl129p1 dual read capable spi flash, with a nice speed improvement: serial read: root@OpenWrt:/# time dd if=/dev/mtd4 of=/dev/null bs=8192 2032+0 records in 2032+0 records out real 0m 4.39s user 0m 0.00s sys 0m 1.55s dual read: root@OpenWrt:/# time dd if=/dev/mtd4 of=/dev/null bs=8192 2032+0 records in 2032+0 records out real 0m 3.09s user 0m 0.00s sys 0m 1.56s Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20spi: drop owner assignment from platform_driversWolfram Sang1-1/+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>
2014-04-14spi: Remove unneeded include of linux/workqueue.hAxel Lin1-1/+0
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-30Merge remote-tracking branches 'spi/topic/bus-num', 'spi/topic/cleanup', ↵Mark Brown1-1/+2
'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/completion' and 'spi/topic/davinci' into spi-next
2014-03-05spi: bcm63xx-hsspi: Use SIMPLE_DEV_PM_OPS macroJingoo Han1-3/+2
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-10spi: Use reinit_completion at appropriate placesAxel Lin1-1/+2
Calling init_completion() once is enough. For the rest of the iterations, call reinit_completion() instead. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18spi/bcm63xx-hsspi: fix pm sleep supportJonas Gorski1-13/+10
Use the right CONFIG symbol to guard, properly (un)preprare clocks on suspend/resume, and check the result of it. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18spi/bcm63xx-hsspi: use devm_register_master()Jonas Gorski1-3/+1
Simplifies the remove call. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18spi/bcm63xx-hsspi: check result of clk_prepare_enableJonas Gorski1-1/+3
Ensure we notice if the clock cannot be enabled for any reason and pass the error down. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18spi: bcm63xx-hsspi: Use devm_clk_get()Jingoo Han1-9/+3
Use devm_clk_get() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-09spi: bcm63xx-hsspi: checking for ERR_PTR instead of NULLDan Carpenter1-1/+1
devm_request_and_ioremap() returns NULL on error, it doesn't return an ERR_PTR(). This patch fixes it by switching to devm_ioremap_resource() which is the prefered function anyway. Fixes: 142168eba9dc ('spi: bcm63xx-hsspi: add bcm63xx HSSPI driver') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-04spi: bcm63xx-hsspi: add bcm63xx HSSPI driverJonas Gorski1-0/+484
Add a driver for the High Speed SPI controller found on newer BCM63XX SoCs. It does feature some new modes like 3-wire or dual spi, but neither of it is currently implemented. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Mark Brown <broonie@linaro.org>
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