AuxXxilium/linux_dsm_epyc7002
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903ca25b21
linux_dsm_epyc7002/drivers/spi
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Sekhar Nori 903ca25b21 spi: davinci: do not allocate DMA channels during SPI device setup 
Do not allocate (and de-allocate) SPI DMA channels during setup
(and cleanup) for each SPI device. Instead, allocate the DMA
channels once duing probe and use them for the life time of
the driver.

This makes sense since there are dedicated DMA channels meant
for SPI use.

This also helps remove the unnecessary DMA "sync_dev" variables
being used to store DMA channel information.

Also, the "use_dma" platform variable is now eliminated since
it is possible to check if the platform supports DMA or not
based upon whether DMA resources can be found or not.

Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Tested-By: Brian Niebuhr <bniebuhr@efjohnson.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2010-11-18 18:38:34 +05:30
..
amba-pl022.c spi/pl022: fix dubious allocation staticize platform data 2010-10-12 21:37:37 -06:00
atmel_spi.c spi/atmel: typo in debug message 2010-10-15 21:56:00 -06:00
atmel_spi.h [PATCH] SPI: atmel_spi driver 2007-02-14 08:09:53 -08:00
au1550_spi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
coldfire_qspi.c m68knommu: include sched.h in ColdFire/SPI driver 2010-08-18 12:44:31 +10:00
davinci_spi.c spi: davinci: do not allocate DMA channels during SPI device setup 2010-11-18 18:38:34 +05:30
dw_spi_mmio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dw_spi_pci.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dw_spi.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
ep93xx_spi.c spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller 2010-05-25 00:23:16 -06:00
Kconfig spi: add spi_tegra driver 2010-10-21 18:15:05 -07:00
Makefile spi: add spi_tegra driver 2010-10-21 18:15:05 -07:00
mpc52xx_psc_spi.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
mpc52xx_spi.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
mpc512x_psc_spi.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2010-08-14 11:54:09 -07:00
omap2_mcspi.c spi/omap2_mcspi: Verify TX reg is empty after TX only xfer with DMA 2010-10-20 10:43:24 -06:00
omap_spi_100k.c SPI100k: Fix 8-bit and RX-only transfers 2010-07-03 22:45:44 -06:00
omap_uwire.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
orion_spi.c spi/orion: Drop unnecessary null test 2010-09-29 17:31:29 +09:00
pxa2xx_spi.c [ARM] pxa: add namespace on ssp 2010-05-11 17:25:06 +02:00
spi_bfin5xx.c spi/bfin_spi: only request GPIO on first load 2010-10-22 01:26:46 -06:00
spi_bitbang_txrx.h spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_bitbang.c spi/bitbang: reinitialize transfer parameters for every message 2010-07-03 22:59:18 -06:00
spi_butterfly.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_fsl_espi.c spi/fsl_spi: add eSPI controller support 2010-10-12 21:38:12 -06:00
spi_fsl_lib.c spi/mpc8xxx: refactor the common code for SPI/eSPI controller 2010-10-12 21:38:12 -06:00
spi_fsl_lib.h spi/fsl_spi: Fix compile errors when building on ppc64 2010-10-14 08:30:12 -06:00
spi_fsl_spi.c spi/mpc8xxx: refactor the common code for SPI/eSPI controller 2010-10-12 21:38:12 -06:00
spi_gpio.c spi: spi-gpio.c tests SPI_MASTER_NO_RX bit twice, but not SPI_MASTER_NO_TX 2010-10-02 21:09:08 -06:00
spi_imx.c spi/imx: Support different fifo sizes 2010-10-11 16:12:22 +02:00
spi_lm70llp.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_nuc900.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_ppc4xx.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
spi_s3c24xx_fiq.h spi_s3c24xx: add FIQ pseudo-DMA support 2009-12-17 08:57:01 -07:00
spi_s3c24xx_fiq.S spi_s3c24xx: add FIQ pseudo-DMA support 2009-12-17 08:57:01 -07:00
spi_s3c24xx_gpio.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_s3c24xx.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi_s3c64xx.c spi/s3c64xx: Correction for 16,32 bits bus width 2010-09-29 17:31:33 +09:00
spi_sh_msiof.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2010-02-25 15:38:03 -08:00
spi_sh_sci.c spi/bitbang: add support for SPI_MASTER_NO_{TX, RX} modes 2010-07-03 22:45:44 -06:00
spi_stmp.c spi: Fix reversed args to time_before() in Freescale stmp driver. 2010-01-20 13:49:44 -07:00
spi_tegra.c spi: tegra: fix error setting on timeout 2010-10-25 16:57:46 -07:00
spi_topcliff_pch.c spi/topcliff: Fix uninitialized variable defect 2010-10-13 23:03:15 -06:00
spi_txx9.c Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2009-12-17 15:59:05 -08:00
spi.c spi: fixed odd static string conventions in core code 2010-10-22 09:51:05 -06:00
spidev.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
tle62x0.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xilinx_spi_of.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
xilinx_spi_pltfm.c xilinx_spi: add a platform driver using the xilinx_spi common module. 2009-12-08 18:48:14 -07:00
xilinx_spi.c of/spi: call of_register_spi_devices() from spi core code 2010-07-30 00:03:59 -06:00
xilinx_spi.h xilinx_spi: Split into of driver and generic part. 2009-12-08 18:48:14 -07:00