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linux/drivers/spi
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Chuanhong Guo 881d1ee9fe
spi: add support for mediatek spi-nor controller 
This is a driver for mtk spi-nor controller using spi-mem interface.
The same controller already has limited support provided by mtk-quadspi
driver under spi-nor framework and this new driver is a replacement
for the old one.

Comparing to the old driver, this driver has following advantages:
1. It can handle any full-duplex spi transfer up to 6 bytes, and
   this is implemented using generic spi interface.
2. It take account into command opcode properly. The reading routine
   in this controller can only use 0x03 or 0x0b as opcode on 1-1-1
   transfers, but old driver doesn't implement this properly. This
   driver checks supported opcode explicitly and use (1) to perform
   unmatched operations.
3. It properly handles SFDP reading. Old driver can't read SFDP
   due to the bug mentioned in (2).
4. It can do 1-2-2 and 1-4-4 fast reading on spi-nor. These two ops
   requires parsing SFDP, which isn't possible in old driver. And
   the old driver is only flagged to support 1-1-2 mode.
5. It takes advantage of the DMA feature in this controller for
   long reads and supports IRQ on DMA requests to free cpu cycles
   from polling status registers on long DMA reading. It achieves
   up to 17.5MB/s reading speed (1-4-4 mode) which is way faster
   than the old one. IRQ is implemented as optional to maintain
   backward compatibility.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Link: https://lore.kernel.org/r/20200306085052.28258-3-gch981213@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-11 19:56:07 +00:00
..
atmel-quadspi.c spi: Remove dev_err() usage after platform_get_irq() 2019-08-02 12:15:43 +01:00
internals.h
Kconfig spi: add support for mediatek spi-nor controller 2020-03-11 19:56:07 +00:00
Makefile spi: add support for mediatek spi-nor controller 2020-03-11 19:56:07 +00:00
spi-altera.c spi: altera: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:14:50 +01:00
spi-armada-3700.c spi: a3700: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:15:09 +01:00
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: ath79: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:15:29 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
spi-axi-spi-engine.c spi: spi-axi: extend support for the delay field 2019-10-15 11:47:26 +01:00
spi-bcm63xx-hsspi.c spi: use new spi_transfer_delay_exec helper where straightforward 2019-10-15 11:51:57 +01:00
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: bcm2835aux: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:16:08 +01:00
spi-bcm-qspi.c spi: bcm-qspi: Use platform_get_irq_byname_optional() to avoid error message 2020-01-07 22:32:04 +00:00
spi-bcm-qspi.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 459 2019-06-19 17:09:09 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 459 2019-06-19 17:09:09 +02:00
spi-butterfly.c spi: docs: convert to ReST and add it to the kABI bookset 2019-07-31 14:13:13 -06:00
spi-cadence.c spi: cadence: Correct handling of native chipselect 2019-11-27 12:54:45 +00:00
spi-cavium-octeon.c spi: octeon: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:17:27 +01:00
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: clps711x: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:17:36 +01:00
spi-coldfire-qspi.c spi: coldfire-qspi: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:17:56 +01:00
spi-davinci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
spi-dln2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
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: Remove dev_err() usage after platform_get_irq() 2019-08-02 12:15:43 +01:00
spi-ep93xx.c spi: Remove dev_err() usage after platform_get_irq() 2019-08-02 12:15:43 +01:00
spi-falcon.c spi: spi-falcon: extend warning to delay as well 2019-10-15 11:46:57 +01:00
spi-fsl-cpm.c spi: fsl-cpm: Correct the free:ing 2019-11-15 12:12:15 +00:00
spi-fsl-cpm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
spi-fsl-dspi.c Merge branch 'spi-5.6' into spi-next 2020-01-23 12:37:18 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
spi-fsl-lib.h spi: fsl: Convert to use CS GPIO descriptors 2019-08-28 14:10:41 +01:00
spi-fsl-lpspi.c spi: fsl-lpspi: fix only one cs-gpio working 2020-01-14 16:03:29 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
spi-geni-qcom.c spi: spi-geni-qcom: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:18:25 +01:00
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: Add HiSilicon v3xx SPI NOR flash controller driver 2020-01-10 14:14:34 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
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: docs: convert to ReST and add it to the kABI bookset 2019-07-31 14:13:13 -06:00
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: lp-8841: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:18:35 +01:00
spi-mem.c spi: spi-mem: fallback to using transfers when CS gpios are used 2019-11-07 13:11:18 +00:00
spi-meson-spicc.c spi: meson-spicc: Use GPIO descriptors 2019-12-16 11:58:48 +00:00
spi-meson-spifc.c spi: spi-meson-spifc: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:19:14 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
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: mt7621: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:19:34 +01:00
spi-mtk-nor.c spi: add support for mediatek spi-nor controller 2020-03-11 19:56:07 +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: Use dma_request_chan() instead dma_request_slave_channel() 2019-12-16 11:57:26 +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: nxp-fspi: Ensure width is respected in spi-mem operations 2019-12-16 11:54:34 +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: omap2-mcspi: Remove redundant checks 2019-11-11 12:50:26 +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-sqi: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:20:52 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
spi-pxa2xx-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
spi-pxa2xx-pci.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
spi-pxa2xx.c Merge branch 'spi-5.5' into spi-linus 2020-01-23 12:37:15 +00:00
spi-pxa2xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
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: Use dma_request_chan() directly for channel request 2019-11-15 12:14:29 +00:00
spi-rb4xx.c spi: rb4xx: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:21:21 +01:00
spi-rockchip.c Linux 5.2-rc4 2019-06-10 18:52:53 +01:00
spi-rspi.c spi: rspi: Add support for GPIO chip selects 2020-01-07 22:34:07 +00:00
spi-s3c24xx-fiq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
spi-s3c24xx-fiq.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
spi-s3c24xx.c spi: s3c24xx: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:21:31 +01:00
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: use new spi_transfer_delay_exec helper where straightforward 2019-10-15 11:51:57 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
spi-sh.c spi: Remove dev_err() usage after platform_get_irq() 2019-08-02 12:15:43 +01:00
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: Use dma_request_chan() instead dma_request_slave_channel() 2019-12-16 11:58:08 +00:00
spi-stm32.c spi: stm32: Use dma_request_chan() instead dma_request_slave_channel() 2019-12-16 11:58:28 +00:00
spi-sun4i.c spi: sun4i: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:22:29 +01:00
spi-sun6i.c spi: sun6i: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:22:49 +01:00
spi-synquacer.c spi: Remove dev_err() usage after platform_get_irq() 2019-08-02 12:15:43 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
spi-ti-qspi.c spi: spi-ti-qspi: fix warning 2020-01-17 15:37:44 +00:00
spi-tle62x0.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
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: xlp: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:23:28 +01:00
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: use devm_platform_ioremap_resource() to simplify code 2019-09-04 17:23:48 +01:00
spi.c spi: make spi-max-frequency optional 2020-03-11 19:56:06 +00:00
spidev.c spi: spidev: use new delay field for spi transfers 2019-10-15 11:45:29 +01:00