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881a0b993e
linux/drivers/spi
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Trent Piepho 881a0b993e
spi: imx: GPIO based chip selects should not be required 
The driver will fail to load if no gpio chip selects are specified,
this patch changes this so that it no longer fails.

It's possible to use all native chip selects, in which case there is
no reason to have a gpio chip select array.  This is what happens if
the *optional* device tree property "cs-gpios" is omitted.

The spi core already checks for the absence of gpio chip selects in
the master and assigns any slaves the gpio_cs value of -ENOENT.

Also have the driver respect the standard SPI device tree property "num-cs"
to allow setting the number of chip selects without using cs-gpios.

CC: Mark Brown <broonie@kernel.org>
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-10 21:28:09 +00:00
..
Kconfig Merge remote-tracking branches 'spi/topic/pxa', 'spi/topic/pxa2xx', 'spi/topic/qup', 'spi/topic/rockchip' and 'spi/topic/sh' into spi-next 2017-09-04 15:51:26 +01:00
Makefile Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/st-ssc4' and 'spi/topic/stm32' into spi-next 2017-07-03 16:21:12 +01:00
spi-adi-v3.c
spi-altera.c spi: altera: Consolidate TX/RX data register access 2017-08-16 11:53:31 +01:00
spi-armada-3700.c Merge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic/bcm-qspi' and 'spi/topic/bcm53xx' into spi-next 2017-02-19 16:40:55 +00:00
spi-ath79.c spi/ath79: Fix checkpatch warnings 2017-07-17 12:09:38 +01:00
spi-atmel.c Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm63xx', 'spi/topic/davinci' and 'spi/topic/imx' into spi-next 2017-07-03 16:21:06 +01:00
spi-au1550.c
spi-axi-spi-engine.c spi: spi-axi: Free resources on error path 2017-01-09 11:20:46 +00:00
spi-bcm53xx.c spi: bcm53xx: (re)license code to the GPL v2 2017-01-06 18:21:50 +00:00
spi-bcm53xx.h
spi-bcm63xx-hsspi.c Merge remote-tracking branches 'spi/topic/altera', 'spi/topic/at79', 'spi/topic/bcm-qspi', 'spi/topic/bcm63xx' and 'spi/topic/bcm63xx-hspi' into spi-next 2017-09-04 15:51:14 +01:00
spi-bcm63xx.c spi/bcm63xx: fix error return code in bcm63xx_spi_probe() 2017-08-08 11:36:35 +01:00
spi-bcm2835.c
spi-bcm2835aux.c
spi-bcm-qspi.c spi: bcm-qspi: Remove hardcoded settings and spi-nor.h dependency 2017-07-28 11:11:35 +01:00
spi-bcm-qspi.h spi: iproc-qspi: Add Broadcom iProc SoCs support 2016-09-24 20:03:25 +01:00
spi-bfin5xx.c
spi-bfin-sport.c
spi-bitbang-txrx.h
spi-bitbang.c
spi-brcmstb-qspi.c spi: brcmstb-qspi: Broadcom settop platform driver 2016-09-14 18:03:32 +01:00
spi-butterfly.c
spi-cadence.c spi: cadence: Add support for context loss 2017-08-08 10:43:41 +01:00
spi-cavium-octeon.c spi: octeon: Split driver into Octeon specific and common parts 2016-07-24 21:54:29 +01:00
spi-cavium-thunderx.c spi: spi-cavium-thunderx: Add missing clk_disable_unprepare() 2016-08-24 12:37:43 +01:00
spi-cavium.c spi: octeon: Split driver into Octeon specific and common parts 2016-07-24 21:54:29 +01:00
spi-cavium.h spi: octeon: Add ThunderX driver 2016-08-19 16:24:39 +01:00
spi-clps711x.c
spi-coldfire-qspi.c
spi-davinci.c spi: davinci: Handle return value of clk_prepare_enable 2017-06-06 19:36:45 +01:00
spi-dln2.c
spi-dw-mid.c spi: dw-mid: switch to new dmaengine_terminate_* API (part 2) 2017-01-04 12:27:00 +00:00
spi-dw-mmio.c spi: dw: Disable clock after unregistering the host 2017-04-18 19:16:49 +01:00
spi-dw-pci.c
spi-dw.c spi: dw: Make debugfs use bus num and make irq name unique 2017-01-09 11:22:14 +00:00
spi-dw.h spi: dw: Make debugfs use bus num and make irq name unique 2017-01-09 11:22:14 +00:00
spi-efm32.c
spi-ep93xx.c spi: spi-ep93xx: use the default master transfer queueing mechanism 2017-08-09 17:53:14 +01:00
spi-falcon.c spi: spi-falcon: drop check of boot select 2017-09-01 11:33:22 +01:00
spi-fsl-cpm.c
spi-fsl-cpm.h
spi-fsl-dspi.c spi: spi-fsl-dspi: ensure non-zero return on error path 2017-05-22 16:14:22 +01:00
spi-fsl-espi.c spi: fsl-espi: fix ioread16/iowrite16 endianness 2016-12-01 18:50:59 +00:00
spi-fsl-lib.c
spi-fsl-lib.h spi: fsl-espi: separate fsl-espi from fsl-lib completely 2016-11-14 11:21:48 +00:00
spi-fsl-lpspi.c spi: fsl-lpspi: fix indentation error 2017-01-09 19:34:02 +00:00
spi-fsl-spi.c Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next 2017-04-26 15:58:04 +01:00
spi-fsl-spi.h
spi-gpio.c
spi-img-spfi.c spi: img-spfi: Remove spi_master_put in img_spfi_remove() 2016-07-27 19:00:16 +01:00
spi-imx.c spi: imx: GPIO based chip selects should not be required 2017-11-10 21:28:09 +00:00
spi-iproc-qspi.c spi: iproc-qspi: Add Broadcom iProc SoCs support 2016-09-24 20:03:25 +01:00
spi-jcore.c spi: jcore: Fix module autoload for OF registration 2016-11-23 16:42:20 +00:00
spi-lantiq-ssc.c Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next 2017-04-26 15:58:04 +01:00
spi-lm70llp.c
spi-loopback-test.c spi: loopback-test: implement testing with no CS 2017-07-26 13:08:56 +01:00
spi-lp8841-rtc.c
spi-meson-spicc.c spi: Add Meson SPICC driver 2017-05-24 18:19:25 +01:00
spi-meson-spifc.c spi: meson: Add GXBB compatible 2016-09-12 20:11:39 +01:00
spi-mpc52xx-psc.c
spi-mpc52xx.c spi/mpc52xx: Combine substrings for two messages 2017-01-17 18:28:19 +00:00
spi-mpc512x-psc.c
spi-mt65xx.c spi: mediatek: add spi support for mt2712 IC 2017-06-20 13:39:14 +01:00
spi-mxs.c
spi-nuc900.c
spi-oc-tiny.c
spi-omap2-mcspi.c spi: omap: Allocate bus number from spi framework 2017-08-18 12:15:41 +01:00
spi-omap-100k.c
spi-omap-uwire.c
spi-orion.c spi: Convert to using %pOF instead of full_name 2017-07-19 11:56:23 +01:00
spi-pic32-sqi.c spi: pic32-sqi: use list_move_tail and list_move 2016-08-08 11:56:40 +01:00
spi-pic32.c spi: pic32: fix spelling mistakes on macro names 2017-07-26 13:04:21 +01:00
spi-pl022.c spi: pl022: constify amba_id 2017-08-23 17:12:05 +01:00
spi-ppc4xx.c spi/ppc4xx: Use kcalloc() in spi_ppc4xx_of_probe() 2017-01-17 18:34:25 +00:00
spi-pxa2xx-dma.c spi: pxa2xx: Remove pointer to chip data from driver data 2016-09-12 20:01:27 +01:00
spi-pxa2xx-pci.c spi: pca2xx-pci: Allow MSI 2017-01-23 18:09:37 +00:00
spi-pxa2xx.c spi: pxa2xx: Convert to GPIO descriptor API where possible 2017-08-04 12:41:55 +01:00
spi-pxa2xx.h spi: pxa2xx: Convert to GPIO descriptor API where possible 2017-08-04 12:41:55 +01:00
spi-qup.c spi: qup: fix 64-bit build warning 2017-08-10 15:50:23 +01:00
spi-rb4xx.c
spi-rockchip.c spi: rockchip: configure CTRLR1 according to size and data frame 2017-08-16 11:58:23 +01:00
spi-rspi.c Merge remote-tracking branches 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx', 'spi/topic/sh-msiof' and 'spi/topic/slave' into spi-next 2017-02-19 16:41:05 +00:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c
spi-s3c64xx.c Merge remote-tracking branches 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx', 'spi/topic/sh-msiof' and 'spi/topic/slave' into spi-next 2017-02-19 16:41:05 +00:00
spi-sc18is602.c spi: sc18is602: Add OF device ID table 2017-02-22 10:50:09 -08:00
spi-sh-hspi.c
spi-sh-msiof.c spi: sh-msiof: Limit minimum divider on R-Car Gen3 2017-07-17 12:09:59 +01:00
spi-sh-sci.c
spi-sh.c spi: spi-sh: fix error return code in spi_sh_probe() 2017-08-09 17:18:06 +01:00
spi-sirf.c spi: sirf: fix spelling mistake: "registerred" -> "registered" 2017-06-28 20:02:52 +01:00
spi-slave-system-control.c spi: slave: Add SPI slave handler controlling system state 2017-05-26 13:12:19 +01:00
spi-slave-time.c spi: slave: Add SPI slave handler reporting uptime at previous message 2017-05-26 13:12:04 +01:00
spi-st-ssc4.c spi: st-ssc4: whitespace cleanup 2017-05-26 12:41:07 +01:00
spi-stm32.c spi: stm32: explicitly request exclusive reset control 2017-07-19 17:05:46 +01:00
spi-sun4i.c spi: sun4i: Allow transfers larger than FIFO size 2016-10-29 12:11:30 -06:00
spi-sun6i.c spi: sun6i: explicitly request exclusive reset control 2017-07-19 17:06:03 +01:00
spi-tegra20-sflash.c spi: tegra20-sflash: explicitly request exclusive reset control 2017-07-19 17:06:31 +01:00
spi-tegra20-slink.c spi: tegra20-slink: explicitly request exclusive reset control 2017-07-19 17:06:26 +01:00
spi-tegra114.c spi: tegra114: explicitly request exclusive reset control 2017-07-19 17:06:28 +01:00
spi-test.h spi: loopback-test: add elapsed time check 2017-03-17 21:54:08 +00:00
spi-ti-qspi.c Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next 2017-04-26 15:58:22 +01:00
spi-tle62x0.c
spi-topcliff-pch.c spi/topcliff-pch: Delete an error message for a failed memory allocation in pch_spi_set_tx() 2017-01-17 18:38:02 +00:00
spi-txx9.c spi: spi-txx9: Add missing clock (un)prepare calls for CCF 2016-08-18 19:10:39 +01:00
spi-xcomm.c
spi-xilinx.c spi: xilinx: Return IRQ_NONE if no interrupts were detected 2016-07-15 11:45:00 +01:00
spi-xlp.c spi: xlp: fix error return code in xlp_spi_probe() 2017-08-08 11:36:07 +01:00
spi-xtensa-xtfpga.c
spi-zynqmp-gqspi.c
spi.c ACPI updates for v4.14-rc1 2017-09-05 12:45:03 -07:00
spidev.c Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-08 10:41:53 -07:00