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Marek Szyprowski 3c8e1a84fd spi/spi-gpio: add support for controllers without MISO or MOSI pin 
There are some boards that do not strictly follow SPI standard and use
only 3 wires (SCLK, MOSI or MISO, SS) for connecting some simple auxiliary
chips and controls them with GPIO based 'spi controller'. In this
configuration the MISO or MOSI line is missing (it is not required if the
chip does not transfer any data back to host or host only reads data from
chip).

This patch adds support for such non-standard configuration in GPIO-based
SPI controller. It has been tested in configuration without MISO pin.

Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-07-03 22:45:44 -06:00
..
amba-pl022.c spi/pl022: fix stop queue procedure 2010-05-25 00:23:14 -06:00
atmel_spi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
atmel_spi.h
au1550_spi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
coldfire_qspi.c spi: Add Freescale/Motorola Coldfire QSPI driver 2010-01-20 13:49:44 -07:00
davinci_spi.c spi/davinci: Fix clock prescale factor computation 2010-05-25 00:23:54 -06:00
dw_spi_mmio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dw_spi_pci.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dw_spi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ep93xx_spi.c spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller 2010-05-25 00:23:16 -06:00
Kconfig Merge remote branch 'origin' into secretlab/next-spi 2010-05-25 00:38:26 -06:00
Makefile spi/mpc5121: Add SPI master driver for MPC5121 PSC 2010-05-25 00:23:17 -06:00
mpc52xx_psc_spi.c of: Remove duplicate fields from of_platform_driver 2010-05-22 00:10:40 -06:00
mpc52xx_spi.c of: Remove duplicate fields from of_platform_driver 2010-05-22 00:10:40 -06:00
mpc512x_psc_spi.c of/spi: mpc512x_psc_spi.c: Fix build failures 2010-06-02 13:45:06 -06:00
omap2_mcspi.c spi/omap2_mcspi: Check params before dereference or use 2010-05-25 00:23:15 -06:00
omap_spi_100k.c SPI100k: Fix 8-bit and RX-only transfers 2010-07-03 22:45:44 -06:00
omap_uwire.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
orion_spi.c
pxa2xx_spi.c [ARM] pxa: add namespace on ssp 2010-05-11 17:25:06 +02:00
spi_bfin5xx.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_bitbang_txrx.h spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_bitbang.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_butterfly.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_gpio.c spi/spi-gpio: add support for controllers without MISO or MOSI pin 2010-07-03 22:45:44 -06:00
spi_imx.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_lm70llp.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_mpc8xxx.c Merge remote branch 'origin' into secretlab/next-spi 2010-05-25 00:38:26 -06:00
spi_nuc900.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_ppc4xx.c of/spi: Fix build failure on spi_ppc4xx.c 2010-06-02 13:38:33 -06:00
spi_s3c24xx_fiq.h spi_s3c24xx: add FIQ pseudo-DMA support 2009-12-17 08:57:01 -07:00
spi_s3c24xx_fiq.S spi_s3c24xx: add FIQ pseudo-DMA support 2009-12-17 08:57:01 -07:00
spi_s3c24xx_gpio.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_s3c24xx.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_s3c64xx.c spi/spi_s3c64xx.c: Fix continuation line formats 2010-02-02 01:07:07 -07:00
spi_sh_msiof.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2010-02-25 15:38:03 -08:00
spi_sh_sci.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_stmp.c spi: Fix reversed args to time_before() in Freescale stmp driver. 2010-01-20 13:49:44 -07:00
spi_txx9.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2009-12-17 15:59:05 -08:00
spi.c spi/mmc_spi: SPI bus locking API, using mutex 2010-06-28 17:49:29 -07:00
spidev.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2009-12-17 15:59:05 -08:00
tle62x0.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xilinx_spi_of.c spi/xilinx: Fix compile error 2010-05-25 00:48:24 -06:00
xilinx_spi_pltfm.c xilinx_spi: add a platform driver using the xilinx_spi common module. 2009-12-08 18:48:14 -07:00
xilinx_spi.c spi: xilinx_spi: Fix up I/O routine wrapping bogosity. 2010-01-20 13:49:45 -07:00
xilinx_spi.h