Kamal Dasu 742d595806 spi: bcm-qspi: Drive MSPI peripheral SSb pin on cs_change ... As per the spi core implementation for MSPI devices when the transfer is the last one in the message, the chip may stay selected until the next transfer. On multi-device SPI busses with nothing blocking messages going to other devices, this is just a performance hint; starting a message to another device deselects this one. But in other cases, this can be used to ensure correctness. Some devices need protocol transactions to be built from a series of spi_message submissions, where the content of one message is determined by the results of previous messages and where the whole transaction ends when the chipselect goes intactive. On CS change after completing the last serial transfer, the MSPI driver drives SSb pin CDRAM register correctly according comments in core spi.h as shown below: case 1) EOM =1, cs_change =0: SSb inactive case 2) EOM =1, cs_change =1: SSb active case 3) EOM =0, cs_change =0: SSb active case 4) EOM =0, cs_change =1: SSb inactive Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/20200420190853.45614-5-kdasu.kdev@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>		2020-04-21 16:05:54 +01:00
..
atmel-quadspi.c	spi: atmel-quadspi: Add verbose debug facilities to monitor register accesses	2020-03-20 13:03:38 +00:00
internals.h
Kconfig	spi: meson-spicc: add a linear clock divider support	2020-03-12 17:22:51 +00:00
Makefile	spi: Rewrite mtk-quadspi spi-nor driver with spi-mem	2020-03-11 19:58:20 +00:00
spi-altera.c
spi-ar934x.c	spi: add driver for ar934x spi controller	2020-02-11 11:37:30 +00:00
spi-armada-3700.c
spi-at91-usart.c	spi: at91-usart: Use dma_request_chan() directly for channel request	2019-11-15 12:13:02 +00:00
spi-ath79.c
spi-atmel.c	spi: atmel: Use dma_request_chan() instead dma_request_slave_channel()	2019-12-16 11:56:07 +00:00
spi-au1550.c
spi-axi-spi-engine.c	spi: spi-axi-spi-engine: Access register after clock initialization	2020-04-09 18:46:53 +01:00
spi-bcm63xx-hsspi.c	spi: bcm63xx-hsspi: Really keep pll clk enabled	2020-03-02 15:03:19 +00:00
spi-bcm63xx.c	spi: bcm63xx: extend error condition to delay as well	2019-10-15 11:47:06 +01:00
spi-bcm2835.c	spi: bcm2835: Raise maximum number of slaves to 4	2020-01-09 21:25:44 +00:00
spi-bcm2835aux.c
spi-bcm-qspi.c	spi: bcm-qspi: Drive MSPI peripheral SSb pin on cs_change	2020-04-21 16:05:54 +01:00
spi-bcm-qspi.h
spi-bitbang-txrx.h
spi-bitbang.c	spi: bitbang: Make chipselect callback optional	2019-12-09 18:46:34 +00:00
spi-brcmstb-qspi.c
spi-butterfly.c
spi-cadence.c	spi: cadence: Correct handling of native chipselect	2019-11-27 12:54:45 +00:00
spi-cavium-octeon.c
spi-cavium-thunderx.c	spi: spi-cavium-thunderx: Add missing pci_release_regions()	2019-12-09 18:44:19 +00:00
spi-cavium.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-cavium.h
spi-clps711x.c
spi-coldfire-qspi.c
spi-davinci.c
spi-dln2.c
spi-dw-mid.c	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
spi-dw-mmio.c	Merge branch 'spi-5.5' into spi-next	2019-11-22 19:56:35 +00:00
spi-dw-pci.c	spi: dw-pci: Fix Chip Select amount on Intel Elkhart Lake PSE SPI	2019-10-22 17:57:43 +01:00
spi-dw.c	Merge branch 'spi-5.6' into spi-next	2020-01-23 12:37:18 +00:00
spi-dw.h	spi: spi-dw: Add lock protect dw_spi rx/tx to prevent concurrent calls	2020-01-03 00:59:40 +00:00
spi-efm32.c	spi: efm32: Convert to use GPIO descriptors	2020-03-27 15:52:23 +00:00
spi-ep93xx.c	spi: spi-ep93xx: fix wrong SPI mode selection	2020-04-03 14:55:55 +01:00
spi-falcon.c	spi: spi-falcon: extend warning to delay as well	2019-10-15 11:46:57 +01:00
spi-fsi.c	spi: Add FSI-attached SPI controller driver	2020-03-10 14:11:57 +00:00
spi-fsl-cpm.c	spi: fsl-cpm: Correct the free:ing	2019-11-15 12:12:15 +00:00
spi-fsl-cpm.h
spi-fsl-dspi.c	spi: spi-fsl-dspi: Add support for LS1028A	2020-03-18 22:45:01 +00:00
spi-fsl-espi.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-fsl-lib.c
spi-fsl-lib.h
spi-fsl-lpspi.c	spi: spi-fsl-lpspi: Replace zero-length array with flexible-array member	2020-03-23 18:37:07 +00:00
spi-fsl-qspi.c	spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations	2020-01-21 17:08:27 +00:00
spi-fsl-spi.c	spi: fsl: simplify error path in of_fsl_spi_probe()	2020-01-14 16:08:29 +00:00
spi-fsl-spi.h
spi-geni-qcom.c	spi: spi-geni-qcom: Drop of.h include	2020-02-11 11:36:51 +00:00
spi-gpio.c	Merge branch 'for-5.4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-5.5	2019-10-08 19:12:28 +01:00
spi-hisi-sfc-v3xx.c	spi: HiSilicon v3xx: Use DMI quirk to set controller buswidth override bits	2020-02-28 18:01:44 +00:00
spi-img-spfi.c	spi: img-spfi: Use dma_request_chan() instead dma_request_slave_channel()	2019-12-16 11:57:06 +00:00
spi-imx.c	spi: imx: use true,false for bool variable	2019-12-25 18:17:25 +00:00
spi-iproc-qspi.c
spi-jcore.c	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
spi-lantiq-ssc.c	spi: lantiq-ssc: Use devm_platform_ioremap_resource() in lantiq_ssc_probe()	2019-10-01 12:34:18 +01:00
spi-lm70llp.c
spi-loopback-test.c	spi: spi-loopback-test: use new delay field	2019-10-15 11:45:19 +01:00
spi-lp8841-rtc.c
spi-mem.c	spi: spi-mem: Compute length only when needed	2020-02-28 18:17:18 +00:00
spi-meson-spicc.c	spi: meson-spicc: add support for Amlogic G12A	2020-03-12 17:22:55 +00:00
spi-meson-spifc.c
spi-mpc52xx-psc.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-mpc52xx.c
spi-mpc512x-psc.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-mt65xx.c	spi: mediatek: add SPI_CS_HIGH support	2019-11-18 17:47:00 +00:00
spi-mt7621.c
spi-mtk-nor.c	spi: add support for mediatek spi-nor controller	2020-03-11 19:56:07 +00:00
spi-mux.c	spi: Add generic SPI multiplexer	2020-02-12 23:56:18 +00:00
spi-mxic.c	Merge branch 'for-5.4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-5.5	2019-10-08 19:12:28 +01:00
spi-mxs.c	spi: mxs: Drop GPIO includes	2020-03-17 13:20:16 +00:00
spi-npcm-fiu.c	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
spi-npcm-pspi.c	Merge branch 'spi-5.6' into spi-next	2020-01-23 12:37:18 +00:00
spi-nxp-fspi.c	spi: spi-nxp-fspi: Fix a NULL vs IS_ERR() check in probe	2020-03-12 15:09:58 +00:00
spi-oc-tiny.c	spi: oc-tiny: Use GPIO descriptors	2019-12-27 01:08:11 +00:00
spi-omap2-mcspi.c	spi: spi-omap2-mcspi: Support probe deferral for DMA channels	2020-02-06 15:53:57 +00:00
spi-omap-100k.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-omap-uwire.c
spi-orion.c	treewide: remove redundant IS_ERR() before error code check	2020-02-04 03:05:27 +00:00
spi-pic32-sqi.c
spi-pic32.c	spi: pic32: Retire dma_request_slave_channel_compat()	2019-11-22 19:53:41 +00:00
spi-pl022.c	spi: pl022: Use dma_request_chan() directly for channel request	2019-11-15 12:14:19 +00:00
spi-ppc4xx.c
spi-pxa2xx-dma.c
spi-pxa2xx-pci.c
spi-pxa2xx.c	Merge series "spi: spidev: Fix messages in spidev" from Oleksandr Suvorov <oleksandr.suvorov@toradex.com>:	2020-03-02 15:19:59 +00:00
spi-pxa2xx.h
spi-qcom-qspi.c	spi: spi-qcom-qspi: Use device managed memory for clk_bulk_data	2020-01-13 15:04:40 +00:00
spi-qup.c	spi: qup: call spi_qup_pm_resume_runtime before suspending	2020-02-21 13:48:08 +00:00
spi-rb4xx.c
spi-rockchip.c	spi: rockchip: add compatible string for px30 rk3308 rk3328	2020-03-10 14:30:56 +00:00
spi-rspi.c	spi: rspi: Add support for active-high chip selects	2020-03-10 14:30:56 +00:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c	spi: spi-s3c24xx: Replace zero-length array with flexible-array member	2020-03-23 18:37:06 +00:00
spi-s3c64xx.c	spi: s3c64xx: Use dma_request_chan() directly for channel request	2019-11-15 12:14:39 +00:00
spi-sc18is602.c	spi: sc18is602: Fix a typo in MODULE_DESCRIPTION	2020-04-14 12:39:37 +01:00
spi-sh-hspi.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-sh-msiof.c	spi: sh-msiof: Do not redefine STR while compile testing	2020-01-09 13:27:05 +00:00
spi-sh-sci.c
spi-sh.c
spi-sifive.c	spi: sifive: disable clk when probe fails and remove	2019-11-04 13:26:11 +00:00
spi-sirf.c	spi: sirf: Use dma_request_chan() instead dma_request_slave_channel()	2019-12-16 11:57:36 +00:00
spi-slave-mt27xx.c	spi: mediatek: Use devm_platform_ioremap_resource() in mtk_spi_slave_probe()	2019-10-01 12:34:58 +01:00
spi-slave-system-control.c
spi-slave-time.c
spi-sprd-adi.c	spi: sprd: adi: Set BIT_WDG_NEW bit when rebooting	2019-10-28 13:17:10 +00:00
spi-sprd.c	spi: sprd: Fix the incorrect SPI register	2019-12-04 12:14:13 +00:00
spi-st-ssc4.c	spi: st-ssc4: add missed pm_runtime_disable	2019-11-18 12:59:11 +00:00
spi-stm32-qspi.c	spi: stm32-qspi: properly manage probe errors	2020-02-11 11:37:10 +00:00
spi-stm32.c	spi: stm32: Fix comments compilation warnings	2020-03-20 21:01:40 +00:00
spi-sun4i.c
spi-sun6i.c
spi-synquacer.c
spi-tegra20-sflash.c	spi: tegra20-sflash: use to new spi_transfer_delay_exec	2019-10-15 11:45:07 +01:00
spi-tegra20-slink.c	spi: tegra20-slink: add missed clk_unprepare	2019-11-15 12:15:22 +00:00
spi-tegra114.c	spi: tegra114: use true,false for bool variable	2019-12-25 18:17:42 +00:00
spi-test.h
spi-ti-qspi.c	spi: spi-ti-qspi: fix warning	2020-01-17 15:37:44 +00:00
spi-tle62x0.c
spi-topcliff-pch.c	spi/topcliff-pch: Remove unneeded semicolon	2019-12-09 18:45:53 +00:00
spi-txx9.c	spi: txx9: Convert to use GPIO descriptors	2019-10-30 14:14:32 +00:00
spi-uniphier.c	spi: uniphier: Add DMA transfer mode support	2019-12-25 18:21:05 +00:00
spi-xcomm.c	spi: use new spi_transfer_delay_exec helper where straightforward	2019-10-15 11:51:57 +01:00
spi-xilinx.c	spi: xilinx: Add DT support for selecting transfer word width	2019-10-24 12:45:21 +01:00
spi-xlp.c
spi-xtensa-xtfpga.c	spi: xtensa-xtfpga: Use devm_platform_ioremap_resource() in xtfpga_spi_probe()	2019-10-01 12:35:18 +01:00
spi-zynq-qspi.c	spi: zynq-qspi: Support two chip selects	2019-11-08 17:45:09 +00:00
spi-zynqmp-gqspi.c	spi/zynqmp: remove entry that causes a cs glitch	2020-02-27 12:48:56 +00:00
spi.c	spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource	2020-04-14 12:39:38 +01:00
spidev.c	spi: spidev: fix speed setting message	2020-03-02 15:19:55 +00:00