Marek Szyprowski 3d63a47a38 spi: s3c64xx: Don't request/release DMA channels for each SPI transfer ... Requesting a DMA channel might be a time consuming operation, so there is no need to acquire and release DMA channel for each SPI transfer. DMA channels can be requested during driver probe and kept all the time, also because there are no shared nor dynamically allocated channels on Samsung S3C/S5P/Exynos platforms. While moving dma_requrest_slave_channel calls, lets switch to dma_request_slave_channel_reason(), which returns error codes on failure, which can be properly propagated to the caller (this for example defers SPI probe when DMA controller is not yet available). Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Andi Shyti <andi.shyti@samsung.com> Tested-by: Andi Shyti <andi.shyti@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>		2017-01-09 12:21:04 +00:00
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Kconfig	Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/rspi' and 'spi/topic/s3c64xx' into spi-next	2016-12-12 15:54:17 +00:00
Makefile	Merge remote-tracking branches 'spi/topic/fsl-lpspi', 'spi/topic/imx', 'spi/topic/jcore' and 'spi/topic/omap' into spi-next	2016-12-12 15:54:14 +00:00
spi-adi-v3.c
spi-altera.c
spi-armada-3700.c	spi: Add support for Armada 3700 SPI Controller	2016-12-08 16:05:34 +00:00
spi-ath79.c	spi: ath79: Fix module autoload for OF registration	2016-11-23 16:42:46 +00:00
spi-atmel.c	Merge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic/atmel' and 'spi/topic/axi' into spi-next	2016-12-12 15:54:05 +00:00
spi-au1550.c
spi-axi-spi-engine.c	spi: spi-axi: Fix module autoload	2016-11-23 16:42:08 +00:00
spi-bcm-qspi.c	spi: iproc-qspi: Add Broadcom iProc SoCs support	2016-09-24 20:03:25 +01:00
spi-bcm-qspi.h	spi: iproc-qspi: Add Broadcom iProc SoCs support	2016-09-24 20:03:25 +01:00
spi-bcm53xx.c	spi: bcm53xx: add spi_flash_read callback for MMIO-based reads	2016-04-18 13:53:46 +01:00
spi-bcm53xx.h
spi-bcm63xx-hsspi.c
spi-bcm63xx.c
spi-bcm2835.c
spi-bcm2835aux.c	Merge remote-tracking branches 'spi/topic/acpi', 'spi/topic/axi-engine', 'spi/topic/bcm2835' and 'spi/topic/bcm2835aux' into spi-next	2016-03-11 14:28:25 +07:00
spi-bfin-sport.c	spi: spi-bfin-sport: Remove deprecated create_singlethread_workqueue	2016-07-03 14:24:31 +02:00
spi-bfin5xx.c	spi: spi-bfin5xx: Remove deprecated create_singlethread_workqueue	2016-07-03 14:14:31 +02:00
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: mark pm functions __maybe_unused	2016-04-18 10:58:49 +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: clps711x: Driver refactor	2016-07-07 11:44:43 +02:00
spi-coldfire-qspi.c
spi-davinci.c	spi: davinci: Use dma_request_chan() for requesting DMA channel	2016-04-29 18:15:15 +01:00
spi-dln2.c	spi: Drop duplicate code to set master->dev.parent	2016-04-26 11:56:09 +01:00
spi-dw-mid.c
spi-dw-mmio.c
spi-dw-pci.c	spi: dw-pci: Spelling s/paltforms/platforms/g	2016-05-11 18:26:19 +01:00
spi-dw.c	spi: dw: Set GPIO_SS flag to toggle Slave Select on GPIO CS	2016-10-11 12:29:04 +02:00
spi-dw.h	spi: dw: fix multiple slaves with different baudrates	2016-09-06 11:53:50 +01:00
spi-efm32.c
spi-ep93xx.c	spi: spi-ep93xx: Fix the PTR_ERR() argument	2016-05-24 16:54:50 +01:00
spi-falcon.c
spi-fsl-cpm.c
spi-fsl-cpm.h
spi-fsl-dspi.c	Merge remote-tracking branches 'spi/topic/delay', 'spi/topic/dw', 'spi/topic/fsl-dspi' and 'spi/topic/fsl-espi' into spi-next	2016-12-12 15:54:09 +00:00
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: quit reading rx fifo under error condition	2016-12-05 11:45:03 +00:00
spi-fsl-spi.c
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: set spi_bus_clk for mx21 and mx27	2016-11-02 09:30:43 -06:00
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-lm70llp.c
spi-loopback-test.c	spi: loopback-test: mark rx_ranges_cmp() static	2016-09-01 20:54:54 +01:00
spi-lp8841-rtc.c	spi: lp-8841: return correct error code from probe	2016-02-26 11:06:38 +09:00
spi-meson-spifc.c	spi: meson: Add GXBB compatible	2016-09-12 20:11:39 +01:00
spi-mpc52xx-psc.c	spi: spi-mpc52xx-psc: Remove deprecated create_singlethread_workqueue	2016-07-03 14:23:25 +02:00
spi-mpc52xx.c
spi-mpc512x-psc.c
spi-mt65xx.c	spi: mediatek: remove spi_master_put in mtk_spi_remove()	2016-07-27 19:00:16 +01:00
spi-mxs.c
spi-nuc900.c
spi-oc-tiny.c
spi-omap-100k.c
spi-omap-uwire.c
spi-omap2-mcspi.c	spi: omap2-mcspi: Remove redundant return value check of platform_get_resource()	2016-10-24 16:08:30 +01:00
spi-orion.c	spi: mvebu: fix baudrate calculation for armada variant	2016-12-08 17:54:51 +00:00
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: fixup wait_for_completion_timeout return handling	2016-07-24 21:49:16 +01:00
spi-pl022.c
spi-ppc4xx.c
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: pxa2xx-pci: fix ACPI-based enumeration of SPI devices	2016-08-24 12:20:03 +01:00
spi-pxa2xx.c	spi: pxa2xx: Fix build error because of missing header	2016-09-29 11:00:41 -07:00
spi-pxa2xx.h	spi: spi-pxa2xx: Remove unused macro	2016-11-14 13:52:04 +00:00
spi-qup.c	Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/pic32-sqi', 'spi/topic/pxa2xx' and 'spi/topic/qup' into spi-next	2016-09-30 09:14:14 -07:00
spi-rb4xx.c
spi-rockchip.c	Merge remote-tracking branches 'spi/topic/pxa2xx', 'spi/topic/rockchip', 'spi/topic/s3c64xx', 'spi/topic/sh' and 'spi/topic/sh-msiof' into spi-next	2016-07-24 22:08:25 +01:00
spi-rspi.c	spi: rspi: avoid uninitialized variable access	2016-11-09 13:05:19 +00:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c
spi-s3c64xx.c	spi: s3c64xx: Don't request/release DMA channels for each SPI transfer	2017-01-09 12:21:04 +00:00
spi-sc18is602.c	spi: sc18is602: Change gpiod_set_value to gpiod_set_value_cansleep	2016-09-29 11:01:36 -07:00
spi-sh-hspi.c
spi-sh-msiof.c	spi: sh-msiof: Add support for R-Car M3-W	2016-11-21 18:30:36 +00:00
spi-sh-sci.c
spi-sh.c	spi: spi-sh: Remove deprecated create_singlethread_workqueue	2016-07-11 19:32:38 +01:00
spi-sirf.c
spi-st-ssc4.c	spi: st-ssc4: Fix misuse of devm_gpio_request/devm_gpio_free APIs	2016-09-14 16:05:35 +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: Support Allwinner H3 SPI controller	2016-11-02 14:59:09 -06:00
spi-tegra20-sflash.c
spi-tegra20-slink.c
spi-tegra114.c
spi-test.h
spi-ti-qspi.c	spi: spi-ti-qspi: reinit of completion variable	2016-11-15 18:37:01 +00:00
spi-tle62x0.c
spi-topcliff-pch.c	spi: spi-topcliff-pch: Remove some dead code	2016-11-21 19:24:49 +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 module autoload for OF registration	2016-11-23 16:42:32 +00:00
spi-xtensa-xtfpga.c
spi-zynqmp-gqspi.c	spi: zynqmp: disable clocks in error paths	2016-05-04 14:21:03 +01:00
spi.c	Merge remote-tracking branches 'spi/topic/delay', 'spi/topic/dw', 'spi/topic/fsl-dspi' and 'spi/topic/fsl-espi' into spi-next	2016-12-12 15:54:09 +00:00
spidev.c	spi: spidev: Add device to spidev device tree compatibility list	2016-10-21 12:09:57 +01:00