Commit Graph

14 Commits

Author SHA1 Message Date
Jonas Gorski 7ab2463550 spi/bcm63xx-hsspi: allow for probing through devicetree
Add required binding support to probe through device tree.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-03-13 15:51:50 +00:00
Jonas Gorski ff18e1ef04 spi/bcm63xx-hsspi: allow providing clock rate through a second clock
The HSSPI block actually has two clock inputs, one for gating the block,
and one for the PLL rate. To allow these to be represented as two clocks,
add support for retrieving the rate from a separate "pll" clock, if the
"hsspi" clock does not provide one.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-03-13 15:51:10 +00:00
Jonas Gorski f4d8622377 spi/bcm63xx-hsspi: add support for dual spi read/write
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>
2015-08-25 17:33:49 +01:00
Wolfram Sang 14ac00e033 spi: drop owner assignment from platform_drivers
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>
2014-10-20 16:21:36 +02:00
Axel Lin e4745fef55 spi: Remove unneeded include of linux/workqueue.h
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-14 17:20:15 +01:00
Mark Brown 9dee279b40 Merge remote-tracking branches 'spi/topic/bus-num', 'spi/topic/cleanup', 'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/completion' and 'spi/topic/davinci' into spi-next 2014-03-30 00:51:03 +00:00
Jingoo Han 1480916ebd spi: bcm63xx-hsspi: Use SIMPLE_DEV_PM_OPS macro
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>
2014-03-05 12:46:24 +08:00
Axel Lin aa0fe82629 spi: Use reinit_completion at appropriate places
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>
2014-02-10 12:32:16 +00:00
Jonas Gorski 937ebf9cd3 spi/bcm63xx-hsspi: fix pm sleep support
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>
2013-12-17 22:32:17 +00:00
Jonas Gorski 7d25569580 spi/bcm63xx-hsspi: use devm_register_master()
Simplifies the remove call.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-17 22:32:17 +00:00
Jonas Gorski dea5de1b37 spi/bcm63xx-hsspi: check result of clk_prepare_enable
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>
2013-12-17 22:32:17 +00:00
Jingoo Han b1bdd4f883 spi: bcm63xx-hsspi: Use devm_clk_get()
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>
2013-12-17 22:31:39 +00:00
Dan Carpenter 87917528cc spi: bcm63xx-hsspi: checking for ERR_PTR instead of NULL
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: 142168eba9 ('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>
2013-12-09 17:24:21 +00:00
Jonas Gorski 142168eba9 spi: bcm63xx-hsspi: add bcm63xx HSSPI driver
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>
2013-12-04 13:29:13 +00:00