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linux-stable/drivers/spi
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Serge Semin d6bbd1193f
spi: dw: Add DWC SSI capability 
Currently DWC SSI core is supported by means of setting up the
core-specific update_cr0() callback. It isn't suitable for multiple
reasons. First of all having exported several methods doing the same thing
but for different chips makes the code harder to maintain. Secondly the
spi-dw-core driver exports the methods, then the spi-dw-mmio driver sets
the private data callback with one of them so to be called by the core
driver again. That makes the code logic too complicated. Thirdly using
callbacks for just updating the CR0 register is problematic, since in case
if the register needed to be updated from different parts of the code,
we'd have to create another callback (for instance the SPI device-specific
parameters don't need to be calculated each time the SPI transfer is
submitted, so it's better to pre-calculate the CR0 data at the SPI-device
setup stage).

So keeping all the above in mind let's discard the update_cr0() callbacks,
define a generic and static dw_spi_update_cr0() method and create the
DW_SPI_CAP_DWC_SSI capability, which when enabled would activate the
alternative CR0 register layout.

While at it add the comments to the code path of the normal DW APB SSI
controller setup to make the dw_spi_update_cr0() method looking coherent.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20201007235511.4935-3-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
 		2020-10-08 23:00:06 +01:00
..
Kconfig spi: qup: Allow for compile-testing on !ARM 2020-09-07 19:04:23 +01:00
Makefile Merge series "mtd: spi-nor: Move cadence-qaudspi to spi-mem framework" from Vignesh Raghavendra <vigneshr@ti.com>: 2020-06-19 14:26:55 +01:00
atmel-quadspi.c spi: atmel-quadspi: Use optimezed memcpy_fromio()/memcpy_toio() 2020-07-17 00:55:24 +01:00
internals.h
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spi-altera.c spi: altera: fix module autoload 2020-06-24 16:37:47 +01:00
spi-amd.c spi: spi-amd: Do not define 'struct acpi_device_id' when !CONFIG_ACPI 2020-07-17 16:38:56 +01:00
spi-ar934x.c spi: add driver for ar934x spi controller 2020-02-11 11:37:30 +00:00
spi-armada-3700.c spi: a3700: Remove a useless memset 2020-08-18 17:52:37 +01:00
spi-at91-usart.c spi: spi-at91-usart: Remove unused OF table 'struct of_device_id' 2020-07-17 16:38:54 +01:00
spi-ath79.c
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spi-atmel.c spi: atmel: Exposing effective spi speed 2020-10-01 23:45:26 +01:00
spi-au1550.c
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spi-axi-spi-engine.c spi: spi-axi-spi-engine: Access register after clock initialization 2020-04-09 18:46:53 +01:00
spi-bcm-qspi.c spi: bcm-qspi: Clean up 7425, 7429, and 7435 settings 2020-09-14 15:50:08 +01:00
spi-bcm-qspi.h
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spi-bcm63xx-hsspi.c spi: bcm63xx-hsspi: add reset support 2020-06-17 14:29:58 +01:00
spi-bcm63xx.c spi: bcm63xx-spi: add reset support 2020-06-17 14:29:58 +01:00
spi-bcm2835.c spi: bcm2835: Make polling_limit_us static 2020-09-14 15:50:15 +01:00
spi-bcm2835aux.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
spi-bitbang-txrx.h
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spi-bitbang.c spi: spi-bitbang: Demote obvious misuse of kerneldoc to standard comment blocks 2020-07-17 16:38:45 +01:00
spi-brcmstb-qspi.c
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spi-butterfly.c
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spi-cadence-quadspi.c spi: cadence-quadspi: Simplify with dev_err_probe() 2020-09-08 18:19:26 +01:00
spi-cadence.c spi: spi-cadence: add support for chip select high 2020-07-22 01:55:51 +01:00
spi-cavium-octeon.c
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spi-cavium-thunderx.c spi: spi-cavium-thunderx: flag controller as half duplex 2020-06-16 00:38:39 +01:00
spi-cavium.c
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spi-cavium.h
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spi-clps711x.c
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spi-coldfire-qspi.c spi: coldfire-qspi: Use clk_prepare_enable and clk_disable_unprepare 2020-07-17 00:55:26 +01:00
spi-davinci.c Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
spi-dln2.c
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spi-dw-core.c spi: dw: Add DWC SSI capability 2020-10-08 23:00:06 +01:00
spi-dw-dma.c spi: dw-dma: Add one-by-one SG list entries transfer 2020-09-29 16:37:15 +01:00
spi-dw-mmio.c spi: dw: Add DWC SSI capability 2020-10-08 23:00:06 +01:00
spi-dw-pci.c spi: dw: Add DWC SSI capability 2020-10-08 23:00:06 +01:00
spi-dw.h spi: dw: Add DWC SSI capability 2020-10-08 23:00:06 +01:00
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 API slippage 2020-07-17 16:38:47 +01:00
spi-falcon.c
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spi-fsi.c spi: fsi: Check mux status before transfers 2020-09-17 19:31:43 +01:00
spi-fsl-cpm.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
spi-fsl-cpm.h
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spi-fsl-dspi.c spi: spi-fsl-dspi: use XSPI mode instead of DMA for DPAA2 SoCs 2020-09-14 15:50:14 +01:00
spi-fsl-espi.c spi: spi-fsl-espi: Remove use of %p 2020-08-25 22:46:50 +01:00
spi-fsl-lib.c
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spi-fsl-lib.h
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spi-fsl-lpspi.c spi: lpspi: Remove CONFIG_PM_SLEEP ifdefery 2020-08-18 17:52:36 +01:00
spi-fsl-qspi.c spi: Fix SPI NOR and SPI NAND acronyms 2020-07-17 00:55:25 +01:00
spi-fsl-spi.c spi: fsl: add missing __iomem annotation 2020-07-01 23:21:26 +01:00
spi-fsl-spi.h
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spi-geni-qcom.c spi: spi-geni-qcom: Don't wait to start 1st transfer if transmitting 2020-09-14 15:50:16 +01:00
spi-gpio.c
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spi-hisi-sfc-v3xx.c spi: hisi-sfc-v3xx: fix spelling mistake "occured" -> "occurred" 2020-09-28 20:33:56 +01:00
spi-img-spfi.c spi: img-spfi: Convert to use GPIO descriptors 2020-07-01 23:21:29 +01:00
spi-imx.c spi: spi-imx: spi_imx_transfer(): add support for effective_speed_hz 2020-09-23 19:59:32 +01:00
spi-iproc-qspi.c
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spi-jcore.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
spi-lantiq-ssc.c spi: lantiq: remove redundant irqsave and irqrestore in hardIRQ 2020-09-17 19:56:02 +01:00
spi-lm70llp.c
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spi-loopback-test.c spi: spi-loopback-test: Fix formatting issues in function header blocks 2020-07-17 16:38:44 +01:00
spi-lp8841-rtc.c
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spi-mem.c spi: spi-mem: allow specifying a command's extension 2020-07-14 17:29:38 +01:00
spi-meson-spicc.c spi: spi-meson-spicc: Remove set but never used variable 'data' from meson_spicc_reset_fifo() 2020-07-17 16:38:48 +01:00
spi-meson-spifc.c spi: spi-meson-spifc: Fix misdocumenting of 'dev' in 'struct meson_spifc' 2020-07-17 16:38:48 +01:00
spi-mpc52xx-psc.c
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spi-mpc52xx.c
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spi-mpc512x-psc.c
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spi-mt65xx.c spi: mediatek: add spi support for mt8192 IC 2020-07-22 01:56:00 +01:00
spi-mt7621.c
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spi-mtk-nor.c spi: spi-mtk-nor: Add power management support 2020-10-06 15:53:47 +01:00
spi-mux.c spi: spi-mux: Simplify with dev_err_probe() 2020-09-08 18:19:27 +01:00
spi-mxic.c spi: spi-mem: allow specifying a command's extension 2020-07-14 17:29:38 +01:00
spi-mxs.c spi: mxs: Drop GPIO includes 2020-03-17 13:20:16 +00:00
spi-npcm-fiu.c spi: npcm-fiu: simplify the return expression of npcm_fiu_probe() 2020-09-22 01:04:19 +01:00
spi-npcm-pspi.c spi: npcm-pspi: Convert to use GPIO descriptors 2020-07-01 23:21:28 +01:00
spi-nxp-fspi.c spi: spi-nxp-fspi: Add ACPI support 2020-09-17 19:56:03 +01:00
spi-oc-tiny.c SPI SUBSYSTEM: Replace HTTP links with HTTPS ones 2020-07-09 22:41:11 +01:00
spi-omap-100k.c spi: omap-100k: Drop include 2020-07-14 17:38:46 +01:00
spi-omap-uwire.c spi: omap-uwire: Use clk_prepare_enable and clk_disable_unprepare 2020-07-15 15:58:33 +01:00
spi-omap2-mcspi.c spi: omap2-mcspi: Improve performance waiting for CHSTAT 2020-09-22 01:04:20 +01:00
spi-orion.c spi: Fix SPI NOR and SPI NAND acronyms 2020-07-17 00:55:25 +01:00
spi-pic32-sqi.c
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spi-pic32.c spi: pic32: Retire dma_request_slave_channel_compat() 2019-11-22 19:53:41 +00:00
spi-pl022.c spi: spi-pl022: Provide missing struct attribute/function param docs 2020-07-17 16:38:50 +01:00
spi-ppc4xx.c spi: ppc4xx: Convert to use GPIO descriptors 2020-07-22 01:55:52 +01:00
spi-pxa2xx-dma.c
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spi-pxa2xx-pci.c
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spi-pxa2xx.c spi: spi-pxa2xx: Do not define 'struct acpi_device_id' when !CONFIG_ACPI 2020-07-17 16:38:55 +01:00
spi-pxa2xx.h
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spi-qcom-qspi.c spi: spi-qcom-qspi: replace spin_lock_irqsave by spin_lock in hard IRQ 2020-09-14 15:50:10 +01:00
spi-qup.c spi: qup: remove redundant assignment to variable ret 2020-09-14 15:50:04 +01:00
spi-rb4xx.c spi: rb4xx: update driver to be device tree aware 2020-05-22 14:13:17 +01:00
spi-rockchip.c spi: rockchip: Fix error in SPI slave pio read 2020-07-28 17:29:31 +01:00
spi-rpc-if.c spi: add Renesas RPC-IF driver 2020-06-16 00:38:38 +01:00
spi-rspi.c spi: rspi: Fill in controller speed limits 2020-08-20 22:38:17 +01:00
spi-s3c24xx-fiq.S
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spi-s3c24xx-fiq.h
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spi-s3c24xx.c spi: s3c24xx: correct kerneldoc comment 2020-08-18 17:52:39 +01:00
spi-s3c64xx.c spi: spi-s3c64xx: Turn on interrupts upon resume 2020-10-02 21:54:24 +01:00
spi-sc18is602.c spi: sc18is602: Fix a typo in MODULE_DESCRIPTION 2020-04-14 12:39:37 +01:00
spi-sh-hspi.c
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spi-sh-msiof.c spi: spi-sh-msiof: Fix checkpatch error Complex macros should use () 2020-04-14 18:36:34 +01:00
spi-sh-sci.c
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spi-sh.c
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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
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spi-slave-system-control.c
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spi-slave-time.c
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spi-sprd-adi.c spi: sprd: Simplify with dev_err_probe() 2020-09-14 15:50:17 +01:00
spi-sprd.c spi: sprd: Simplify with dev_err_probe() 2020-09-14 15:50:17 +01:00
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: Fix error path in case of -EPROBE_DEFER 2020-06-17 13:26:41 +01:00
spi-stm32.c spi: spi-stm32: remove redundant irqsave and irqrestore in hardIRQ 2020-10-01 23:45:28 +01:00
spi-sun4i.c spi: sun4i: update max transfer size reported 2020-07-27 14:55:21 +01:00
spi-sun6i.c spi: spi-sun6i: sun6i_spi_transfer_one(): enable RF_RDY interrupt only if needed 2020-07-07 10:41:41 +01:00
spi-synquacer.c spi: synquacer: Simplify with dev_err_probe() 2020-09-08 18:19:29 +01:00
spi-tegra20-sflash.c spi: spi-tegra20-sflash: remove redundant irqsave and irqrestore in hardIRQ 2020-10-01 23:45:27 +01:00
spi-tegra20-slink.c spi: tegra20: Simplify with dev_err_probe() 2020-09-08 18:19:31 +01:00
spi-tegra114.c spi: tegra114: Simplify with dev_err_probe() 2020-09-08 18:19:30 +01:00
spi-test.h
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spi-ti-qspi.c SPI SUBSYSTEM: Replace HTTP links with HTTPS ones 2020-07-09 22:41:11 +01:00
spi-tle62x0.c
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spi-topcliff-pch.c spi/topcliff-pch: drop double zeroing 2020-09-21 17:56:38 +01:00
spi-txx9.c
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spi-uniphier.c spi: uniphier: Use devm_platform_get_and_ioremap_resource() to simplify code 2020-05-11 18:17:52 +01:00
spi-xcomm.c
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spi-xilinx.c spi: xilinx: Fix info message during probe 2020-09-17 19:56:01 +01:00
spi-xlp.c
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spi-xtensa-xtfpga.c
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spi-zynq-qspi.c spi: spi-zynq-qspi: Add description for 2 missing attributes/parameters 2020-07-17 16:38:51 +01:00
spi-zynqmp-gqspi.c spi: spi-zynqmp-gqspi: Fix incorrect indentation 2020-09-24 12:59:29 +01:00
spi.c spi: Fixes for v5.9 2020-08-18 14:27:12 -07:00
spidev.c spi: spidev: Remove redundant initialization of variable status 2020-09-09 16:27:46 +01:00