renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-20 19:23:57 +08:00
Code
390f0ffe92
linux-next/drivers/spi
History
Anton Bondarenko 390f0ffe92 spi: imx: allow only WML aligned transfers to use DMA 
RX DMA tail data handling doesn't work correctly in many cases with current
implementation. It happens because SPI core was setup to generates both RX
and RX TAIL events. And RX TAIL event does not work correctly.
This can be easily verified by sending SPI transaction with size modulus
WML(32 in our case) not equal 0.

Also removing change introduced in f6ee9b582d
since this change only fix usecases with transfer size from 33 to 128 bytes
and doesn't fix 129 bytes and bigger.

This is output from transaction with len 138 bytes in loopback mode at 10Mhz:
TX0000: a3 97 a2 55 53 be f1 fc f9 79 6b 52 14 13 e9 e2
TX0010: 2d 51 8e 1f 56 08 57 27 a7 05 d4 d0 52 82 77 75
TX0020: 1b 99 4a ed 58 3d 6a 52 36 d5 24 4a 68 8e ad 95
TX0030: 5f 3c 35 b5 c4 8c dd 6c 11 32 3d e2 b4 b4 59 cf
TX0040: ce 23 3d 27 df a7 f9 96 fc 1e e0 66 2c 0e 7b 8c
TX0050: ca 30 42 8f bc 9f 7b ce d1 b8 b1 87 ec 8a d6 bb
TX0060: 2e 15 63 0e 3c dc a4 3a 7a 06 20 a7 93 1b 34 dd
TX0070: 4c f5 ec 88 96 68 d6 68 a0 09 6f 8e 93 47 c9 41
TX0080: db ac cf 97 89 f3 51 05 79 71

RX0000: a3 97 a2 55 53 be f1 fc f9 79 6b 52 14 13 e9 e2
RX0010: 2d 51 8e 1f 56 08 57 27 a7 05 d4 d0 52 82 77 75
RX0020: 1b 99 4a ed 58 3d 6a 52 36 d5 24 4a 68 8e ad 95
RX0030: 5f 3c 35 00 00 b5 00 00 00 c4 00 00 8c 00 00 dd
RX0040: 6c 11 32 3d e2 b4 b4 59 cf ce 23 3d 27 df a7 f9
RX0050: 96 fc 1e e0 66 2c 0e 7b 8c ca 30 42 8f 1f 1f bc
RX0060: 9f 7b ce d1 b8 b1 87 ec 8a d6 bb 2e 15 63 0e ed
RX0070: ed 3c 58 58 58 dc 3d 3d a4 6a 6a 3a 52 52 7a 36
RX0080: 06 20 a7 93 1b 34 dd 4c f5 ec

Zeros at offset 33 and 34 caused by reading empty RX FIFO which not possible
if DMA RX read was triggered by RX event. This mean DMA was triggered
by RX TAIL event.

Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-17 14:22:29 +00:00
..
Kconfig Merge remote-tracking branches 'spi/topic/sun4i', 'spi/topic/topcliff-pch' and 'spi/topic/zynq' into spi-next 2016-01-11 16:48:38 +00:00
Makefile spi: add spi-loopback-test to build framework 2015-12-12 23:05:18 +00:00
spi-adi-v3.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-altera.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-ath79.c spi: ath79: simplify iomem resource mapping 2015-09-30 20:33:29 +01:00
spi-atmel.c Merge remote-tracking branches 'spi/topic/ath97', 'spi/topic/atmel', 'spi/topic/au1550', 'spi/topic/bcm2835' and 'spi/topic/bcm2835aux' into spi-next 2015-11-04 11:02:04 +00:00
spi-au1550.c spi: au1550: Simplify au1550_spi_setupxfer() 2015-09-16 20:54:54 +01:00
spi-bcm53xx.c spi: bcm53xx: Adjust devm usage 2015-09-16 17:42:28 +01:00
spi-bcm53xx.h
spi-bcm63xx-hsspi.c spi/bcm63xx-hsspi: add support for dual spi read/write 2015-08-25 17:33:49 +01:00
spi-bcm63xx.c Merge remote-tracking branches 'spi/topic/bcm63xx', 'spi/topic/butterfly', 'spi/topic/cadence' and 'spi/topic/davinci' into spi-next 2016-01-11 16:48:30 +00:00
spi-bcm2835.c Merge remote-tracking branches 'spi/topic/ath97', 'spi/topic/atmel', 'spi/topic/au1550', 'spi/topic/bcm2835' and 'spi/topic/bcm2835aux' into spi-next 2015-11-04 11:02:04 +00:00
spi-bcm2835aux.c spi: bcm2835aux: change initialization order and switch to platform_get_irq 2015-10-16 15:35:33 +01:00
spi-bfin5xx.c spi: spi-bfin5xx: Calculate transfer speed unconditionally 2015-09-16 20:54:32 +01:00
spi-bfin-sport.c spi: bfin-sport: Calculate transfer speed unconditionally 2015-09-16 20:53:45 +01:00
spi-bitbang-txrx.h spi: Fix regression in spi-bitbang-txrx.h 2015-07-29 15:01:07 +01:00
spi-bitbang.c spi: bitbang: switch to the generic implementation of transfer_one_message 2015-10-05 14:55:56 +01:00
spi-butterfly.c spi: butterfly: use new parport device model 2015-12-02 19:38:16 +00:00
spi-cadence.c spi: cadence: use to_platform_device() 2016-01-05 11:34:23 +00:00
spi-clps711x.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-coldfire-qspi.c spi: spi-coldfire-qspi: enable RuntimePM before registering to the core 2015-10-12 17:02:08 +01:00
spi-davinci.c spi: davinci: use dev_err() for error reporting 2015-12-12 22:57:44 +00:00
spi-dln2.c spi/dln2: simplify return flow for dln2_spi_transfer_setup and dln2_spi_enable 2015-01-06 17:02:50 +00:00
spi-dw-mid.c spi: dw-mid: constify dw_spi_dma_ops structure 2015-11-30 11:34:50 +00:00
spi-dw-mmio.c spi: dw-mmio: convert to unified device property API 2015-10-19 20:32:01 +01:00
spi-dw-pci.c spi: dw-pci: remove unused pdev member from struct dw_spi_pci 2015-10-19 20:32:01 +01:00
spi-dw.c spi: dw: Use SPI_TMOD_TR rather than magic const 0 to set tmode 2015-12-23 12:12:09 +00:00
spi-dw.h spi: dw-mid: constify dw_spi_dma_ops structure 2015-11-30 11:34:50 +00:00
spi-efm32.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-ep93xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-falcon.c Merge remote-tracking branches 'spi/topic/falcon', 'spi/topic/fsf', 'spi/topic/fsl', 'spi/topic/fsl-dspi' and 'spi/topic/gpio' into spi-next 2015-02-08 11:16:46 +08:00
spi-fsl-cpm.c QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
spi-fsl-cpm.h
spi-fsl-dspi.c spi-fsl-dspi: Fix CTAR Register access 2015-12-12 22:33:09 +00:00
spi-fsl-espi.c spi: fsl-espi: expose maximum transfer size limit 2016-01-05 16:33:54 +00:00
spi-fsl-lib.c spi: fsl-(e)spi: simplify cleanup code 2015-08-28 18:15:18 +01:00
spi-fsl-lib.h spi: fsl-(e)spi: simplify cleanup code 2015-08-28 18:15:18 +01:00
spi-fsl-spi.c spi: fsl-(e)spi: Fix checking return value of devm_ioremap_resource 2015-08-30 12:14:36 +01:00
spi-fsl-spi.h
spi-gpio.c Merge remote-tracking branches 'spi/topic/falcon', 'spi/topic/fsf', 'spi/topic/fsl', 'spi/topic/fsl-dspi' and 'spi/topic/gpio' into spi-next 2015-02-08 11:16:46 +08:00
spi-img-spfi.c Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/fsl-espi', 'spi/topic/img-spfi' and 'spi/topic/mpc512x-psc' into spi-next 2015-08-31 14:45:32 +01:00
spi-imx.c spi: imx: allow only WML aligned transfers to use DMA 2016-02-17 14:22:29 +00:00
spi-lm70llp.c spi: lm70llp: remove printk 2015-12-07 20:09:09 +00:00
spi-loopback-test.c spi: loopback: fix typo in MODULE_PARM_DESC 2016-01-08 12:53:35 +00:00
spi-meson-spifc.c spi: meson: Fix module autoload for OF platform driver 2015-09-19 07:55:25 -07:00
spi-mpc52xx-psc.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-mpc52xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-mpc512x-psc.c spi: mpc512x: Call mpc512x_psc_spi_transfer_setup() unconditionally 2015-09-17 12:33:31 +01:00
spi-mt65xx.c Merge remote-tracking branches 'spi/topic/lm70llp', 'spi/topic/loopback', 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next 2016-01-11 16:48:33 +00:00
spi-mxs.c spi: mxs: cleanup wait_for_completion return handling 2015-02-05 18:04:57 +00:00
spi-nuc900.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-oc-tiny.c spi: oc-tiny: Use of_property_read_u32 instead of open-coding it 2015-09-16 19:16:01 +01:00
spi-octeon.c spi: octeon: Use transfer speed unconditionally 2015-09-16 20:53:19 +01:00
spi-omap2-mcspi.c spi: omap2-mcspi: Prevent duplicate gpio_request 2015-12-01 17:05:34 +00:00
spi-omap-100k.c spi: omap-100k: Rely on validations done by spi core 2015-09-17 12:34:20 +01:00
spi-omap-uwire.c spi: omap-uwire: Remove needless bits_per_word and speed_hz tests 2015-09-17 12:33:58 +01:00
spi-orion.c spi: orion: On a38x, implement "50MHZ SPI AC timing" Erratum No. FE-9144572 2015-08-11 17:21:08 +01:00
spi-pl022.c spi: pl022: handle EPROBE_DEFER for dma 2015-11-23 11:31:44 +00:00
spi-ppc4xx.c spi: bitbang: Replace spinlock by mutex 2015-09-17 12:13:40 +01:00
spi-pxa2xx-dma.c spi: pxa2xx: Remove empty function pxa2xx_spi_dma_resume() 2015-10-01 17:26:27 +01:00
spi-pxa2xx-pci.c spi: spi-pxa2xx: Remove clk.h include 2015-07-15 12:35:02 +01:00
spi-pxa2xx.c spi: pxa2xx: Remove redundant call to lpss_ssp_setup() in probe 2015-11-20 18:19:14 +00:00
spi-pxa2xx.h Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/owner', 'spi/topic/pxa' and 'spi/topic/pxa2xx' into spi-next 2015-11-04 11:02:12 +00:00
spi-qup.c Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next 2015-04-11 23:09:25 +01:00
spi-rb4xx.c spi: rb4xx: Fix checking return value of devm_ioremap_resource() 2015-05-01 17:35:54 +01:00
spi-rockchip.c spi/rockchip: remove unnecessary memset of rockchip_spi 2015-07-07 13:12:50 +01:00
spi-rspi.c spi: rspi: Make qspi_set_send_trigger() return "unsigned int" 2015-07-03 13:52:10 +01:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c spi: bitbang: Replace spinlock by mutex 2015-09-17 12:13:40 +01:00
spi-s3c64xx.c spi: s3c64xx: Remove unused platform_device_id entries 2015-12-30 16:48:58 +00:00
spi-sc18is602.c Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next 2015-04-11 23:09:25 +01:00
spi-sh-hspi.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sh-msiof.c spi: sh-msiof: Fix FIFO size to 64 word from 256 word 2015-08-31 14:42:40 +01:00
spi-sh-sci.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-sh.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sirf.c spi: sirf: add the reset for USP-based SPI 2015-05-26 11:39:16 +01:00
spi-st-ssc4.c spi: constify of_device_id array 2015-03-17 12:15:22 +00:00
spi-sun4i.c Merge remote-tracking branches 'spi/topic/sun4i', 'spi/topic/topcliff-pch' and 'spi/topic/zynq' into spi-next 2016-01-11 16:48:38 +00:00
spi-sun6i.c spi: sun4i: allow transfers to set transmission speed 2015-11-18 18:34:56 +00:00
spi-tegra20-sflash.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-tegra20-slink.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-tegra114.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-test.h spi: loopback: added additional non-power of 2 transfer lengthes 2015-12-13 20:10:15 +00:00
spi-ti-qspi.c Merge remote-tracking branches 'spi/topic/s3c64xx', 'spi/topic/ti-qspi' and 'spi/topic/txx9' into spi-next 2015-11-04 11:02:16 +00:00
spi-tle62x0.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
spi-topcliff-pch.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-txx9.c spi: txx9: Use transfer speed unconditionally 2015-09-16 20:52:52 +01:00
spi-xcomm.c spi: xcomm: Export I2C module alias information 2015-07-31 18:14:57 +01:00
spi-xilinx.c spi/spi-xilinx: Fix race condition on last word read 2015-10-29 09:03:42 +09:00
spi-xlp.c spi/xlp: SPI controller driver for Netlogic XLP SoCs 2015-08-28 18:22:19 +01:00
spi-xtensa-xtfpga.c spi: xtensa-xtfpga: fix register endianness 2015-09-22 09:30:10 -07:00
spi-zynqmp-gqspi.c spi: zynq: use to_platform_device() 2016-01-05 11:34:37 +00:00
spi.c spi: Updates for v4.5 2016-01-13 11:38:27 -08:00
spidev.c Merge remote-tracking branches 'spi/topic/overlay', 'spi/topic/pxa2xx', 'spi/topic/s3c64xx', 'spi/topic/sh-msiof' and 'spi/topic/spidev' into spi-next 2016-01-11 16:48:35 +00:00