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twx-linux/drivers/spi
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Serge Semin 103b5e4ad8 spi: dw: Return any value retrieved from the dma_transfer callback 
[ Upstream commit f0410bbf7d ]

DW APB SSI DMA-part of the driver may need to perform the requested
SPI-transfer synchronously. In that case the dma_transfer() callback
will return 0 as a marker of the SPI transfer being finished so the
SPI core doesn't need to wait and may proceed with the SPI message
trasnfers pumping procedure. This will be needed to fix the problem
when DMA transactions are finished, but there is still data left in
the SPI Tx/Rx FIFOs being sent/received. But for now make dma_transfer
to return 1 as the normal dw_spi_transfer_one() method.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: devicetree@vger.kernel.org
Link: https://lore.kernel.org/r/20200529131205.31838-3-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-20 10:25:14 +02:00
..
Kconfig
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Makefile
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spi-adi-v3.c
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spi-altera.c
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spi-armada-3700.c
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spi-ath79.c
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spi-atmel.c
spi: atmel: fix handling of cs_change set on non-last xfer
2020-01-17 19:45:52 +01:00
spi-au1550.c
…
spi-axi-spi-engine.c
…
spi-bcm53xx.c
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spi-bcm53xx.h
…
spi-bcm63xx-hsspi.c
…
spi-bcm63xx.c
…
spi-bcm2835.c
spi: bcm2835: Fix controller unregister order
2020-06-20 10:25:03 +02:00
spi-bcm2835aux.c
spi: bcm2835aux: Fix controller unregister order
2020-06-20 10:25:01 +02:00
spi-bcm-qspi.c
spi: bcm-qspi: when tx/rx buffer is NULL set to 0
2020-06-20 10:25:01 +02:00
spi-bcm-qspi.h
…
spi-bfin5xx.c
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spi-bfin-sport.c
…
spi-bitbang-txrx.h
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spi-bitbang.c
spi: bitbang: Fix NULL pointer dereference in spi_unregister_master
2019-07-10 09:54:31 +02:00
spi-brcmstb-qspi.c
…
spi-butterfly.c
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spi-cadence.c
spi: cadence: Correct initialisation of runtime PM
2020-01-27 14:46:12 +01:00
spi-cavium-octeon.c
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spi-cavium-thunderx.c
spi: spi-cavium-thunderx: Add missing pci_release_regions()
2020-01-12 12:11:53 +01:00
spi-cavium.c
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spi-cavium.h
…
spi-clps711x.c
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spi-coldfire-qspi.c
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spi-davinci.c
spi: davinci: fix a NULL pointer dereference
2018-09-09 19:55:52 +02:00
spi-dln2.c
…
spi-dw-mid.c
spi: dw: Return any value retrieved from the dma_transfer callback
2020-06-20 10:25:14 +02:00
spi-dw-mmio.c
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spi-dw-pci.c
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spi-dw.c
spi: dw: Return any value retrieved from the dma_transfer callback
2020-06-20 10:25:14 +02:00
spi-dw.h
spi: spi-dw: Add lock protect dw_spi rx/tx to prevent concurrent calls
2020-02-05 14:18:06 +00:00
spi-efm32.c
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spi-ep93xx.c
spi: spi-ep93xx: Use dma_data_direction for ep93xx_spi_dma_{finish,prepare}
2018-11-13 11:14:52 -08:00
spi-falcon.c
…
spi-fsl-cpm.c
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spi-fsl-cpm.h
…
spi-fsl-dspi.c
spi: spi-fsl-dspi: Fix imprecise abort on VF500 during probe
2018-09-09 19:55:53 +02:00
spi-fsl-espi.c
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spi-fsl-lib.c
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spi-fsl-lib.h
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spi-fsl-lpspi.c
spi: fsl-lpspi: Prevent FIFO under/overrun by default
2019-11-24 08:23:28 +01:00
spi-fsl-spi.c
spi: spi-fsl-spi: call spi_finalize_current_message() at the end
2020-01-27 14:46:35 +01:00
spi-fsl-spi.h
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spi-gpio.c
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spi-img-spfi.c
spi: img-spfi: fix potential double release
2019-12-31 12:37:22 +01:00
spi-imx.c
spi: imx: mx51-ecspi: Move some initialisation to prepare_message hook.
2018-12-29 13:39:11 +01:00
spi-iproc-qspi.c
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spi-jcore.c
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spi-lantiq-ssc.c
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spi-lm70llp.c
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spi-loopback-test.c
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spi-lp8841-rtc.c
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spi-meson-spicc.c
spi: meson-spicc: Fix error handling in meson_spicc_probe()
2018-08-03 07:50:38 +02:00
spi-meson-spifc.c
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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: use correct mata->xfer_len when in fifo transfer
2019-11-24 08:22:43 +01:00
spi-mxs.c
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spi-nuc900.c
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spi-oc-tiny.c
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spi-omap2-mcspi.c
spi: omap2-mcspi: Fix DMA and FIFO event trigger size mismatch
2019-12-01 09:14:14 +01:00
spi-omap-100k.c
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spi-omap-uwire.c
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spi-orion.c
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spi-pic32-sqi.c
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spi-pic32.c
spi: pic32: Use proper enum in dmaengine_prep_slave_rg
2019-11-20 18:00:22 +01:00
spi-pl022.c
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spi-ppc4xx.c
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spi-pxa2xx-dma.c
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spi-pxa2xx-pci.c
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spi-pxa2xx.c
spi: pxa2xx: Apply CS clk quirk to BXT
2020-06-20 10:25:07 +02:00
spi-pxa2xx.h
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spi-qup.c
spi: qup: call spi_qup_pm_resume_runtime before suspending
2020-04-02 16:34:11 +02:00
spi-rb4xx.c
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spi-rockchip.c
spi: rockchip: initialize dma_slave_config properly
2019-11-24 08:23:33 +01:00
spi-rspi.c
spi: rspi: Fix sequencer reset during initialization
2019-05-31 06:47:35 -07:00
spi-s3c24xx-fiq.h
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spi-s3c24xx-fiq.S
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spi-s3c24xx.c
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spi-s3c64xx.c
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spi-sc18is602.c
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spi-sh-hspi.c
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spi-sh-msiof.c
spi: sh-msiof: fix deferred probing
2019-12-01 09:13:21 +01:00
spi-sh-sci.c
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spi-sh.c
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spi-sirf.c
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spi-slave-system-control.c
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spi-slave-time.c
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spi-st-ssc4.c
spi: st-ssc4: add missed pm_runtime_disable
2019-12-31 12:37:45 +01:00
spi-stm32.c
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spi-sun4i.c
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spi-sun6i.c
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spi-tegra20-sflash.c
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spi-tegra20-slink.c
spi: tegra20-slink: add missed clk_unprepare
2019-12-31 12:37:42 +01:00
spi-tegra114.c
spi: tegra114: configure dma burst size to fifo trig level
2020-01-27 14:46:28 +01:00
spi-test.h
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spi-ti-qspi.c
spi: ti-qspi: Fix mmap read when more than one CS in use
2019-03-23 14:35:19 +01:00
spi-tle62x0.c
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spi-topcliff-pch.c
spi/topcliff_pch: Fix potential NULL dereference on allocation error
2020-01-27 14:46:14 +01:00
spi-txx9.c
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spi-xcomm.c
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spi-xilinx.c
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spi-xlp.c
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spi-xtensa-xtfpga.c
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spi-zynqmp-gqspi.c
spi/zynqmp: remove entry that causes a cs glitch
2020-04-02 16:34:13 +02:00
spi.c
spi: Fix controller unregister order
2020-06-20 10:25:03 +02:00
spidev.c
spi: Add call to spi_slave_abort() function when spidev driver is released
2019-12-31 12:36:47 +01:00