AuxXxilium/linux_dsm_epyc7002
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d6e102f498
linux_dsm_epyc7002/drivers/i2c/busses
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Fabio Estevam d6e102f498 i2c: i2c-mxs: Use DMA mode even for small transfers 
Recently we have been seing some reports about PIO mode not working properly.

- http://www.spinics.net/lists/linux-i2c/msg11985.html
- http://marc.info/?l=linux-i2c&m=137235593101385&w=2
- https://lkml.org/lkml/2013/6/24/430

Let's use DMA mode even for small transfers.

Without this patch, i2c reads the incorrect sgtl5000 version on a mx28evk when
touchscreen is enabled:

[    5.856270] sgtl5000 0-000a: Device with ID register 0 is not a sgtl5000
[    9.877307] sgtl5000 0-000a: ASoC: failed to probe CODEC -19
[    9.883528] mxs-sgtl5000 sound.12: ASoC: failed to instantiate card -19
[    9.892955] mxs-sgtl5000 sound.12: snd_soc_register_card failed (-19)

Cc: <stable@vger.kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Marek Vasut <marex@denx.de>

[wsa: we have a proper solution for -next, so this non intrusive
solution is OK for now]

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-08-05 10:09:12 +02:00
..
i2c-acorn.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
i2c-ali15x3.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ali1535.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ali1563.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-amd756-s4882.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-amd756.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-amd8111.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-at91.c i2c: at91: convert to dma_request_slave_channel_compat() 2013-04-16 11:10:14 +02:00
i2c-au1550.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-bcm2835.c i2c: add bcm2835 driver 2013-02-12 11:33:59 +01:00
i2c-bfin-twi.c i2c: bfin-twi: Read and write the FIFO in loop 2013-06-12 20:39:07 +02:00
i2c-cbus-gpio.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-cpm.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-07-04 14:02:09 -07:00
i2c-davinci.c drivers/i2c/busses: don't check resource with devm_ioremap_resource 2013-06-12 20:39:06 +02:00
i2c-designware-core.c i2c-designware: make SDA hold time configurable 2013-06-26 16:02:06 +02:00
i2c-designware-core.h i2c-designware: make SDA hold time configurable 2013-06-26 16:02:06 +02:00
i2c-designware-pcidrv.c i2c: designware-pci: drop superfluous {get|put}_device 2013-04-19 20:22:10 +02:00
i2c-designware-platdrv.c i2c-designware: use div_u64 to fix link 2013-07-03 22:07:51 +02:00
i2c-diolan-u2c.c i2c: diolan-u2c: Fix master_xfer return code 2012-08-18 12:27:27 +02:00
i2c-eg20t.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-elektor.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-gpio.c i2c: gpio: Add support for deferred probing 2013-03-27 08:51:50 +01:00
i2c-highlander.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-hydra.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-i801.c i2c: i801: SMBus patch for Intel Coleto Creek DeviceIDs 2013-06-20 21:32:27 +02:00
i2c-ibm_iic.c i2c: use platform_{get,set}_drvdata() 2013-06-12 20:39:07 +02:00
i2c-ibm_iic.h i2c-ibm_iic: Whitespace cleanup 2008-01-27 18:14:45 +01:00
i2c-imx.c i2c: imx: allow autoloading on dt ids 2013-06-25 18:50:07 +02:00
i2c-iop3xx.c i2c: iop3xxx: fix build failure after waitqueue changes 2013-07-01 07:48:58 +02:00
i2c-iop3xx.h i2c-iop3xx: add iomem annotation 2011-01-04 00:53:37 +00:00
i2c-isch.c i2c: isch: Add module parameter for backbone clock rate if divider is unset 2013-02-11 15:53:49 +01:00
i2c-ismt.c i2c: ismt: remove duplicate const 2013-03-24 10:30:56 +01:00
i2c-kempld.c i2c: Kontron PLD i2c bus driver 2013-07-01 08:35:44 +02:00
i2c-mpc.c i2c: use platform_{get,set}_drvdata() 2013-06-12 20:39:07 +02:00
i2c-mv64xxx.c i2c: mv64xxx: Set bus frequency to 100kHz if clock-frequency is not provided 2013-06-25 23:43:37 +02:00
i2c-mxs.c i2c: i2c-mxs: Use DMA mode even for small transfers 2013-08-05 10:09:12 +02:00
i2c-nforce2-s4985.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-nforce2.c i2c: nforce2: fix coding style issues 2013-01-28 05:26:42 +01:00
i2c-nomadik.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-07-04 14:02:09 -07:00
i2c-nuc900.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ocores.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
i2c-octeon.c i2c: octeon: use HZ in timeout value 2013-04-23 18:29:11 +02:00
i2c-omap.c i2c: omap: correct usage of the interrupt enable register 2013-06-19 12:04:26 +02:00
i2c-parport-light.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-parport.c i2c-parport: i2c_parport_irq can be static 2012-10-05 22:23:53 +02:00
i2c-parport.h i2c-parport: Various cleanups 2011-05-24 20:58:49 +02:00
i2c-pasemi.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-pca-isa.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-pca-platform.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-piix4.c i2c-piix4: Add AMD CZ SMBus device ID 2013-06-03 13:02:45 -06:00
i2c-pmcmsp.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-pnx.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-powermac.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-puv3.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-05-02 14:38:53 -07:00
i2c-pxa-pci.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-pxa.c i2c-pxa: prepare clock before use 2013-06-18 18:11:32 +02:00
i2c-rcar.c drivers/i2c/busses: don't check resource with devm_ioremap_resource 2013-06-12 20:39:06 +02:00
i2c-s3c2410.c drivers/i2c/busses: don't check resource with devm_ioremap_resource 2013-05-18 11:55:32 +02:00
i2c-s6000.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-s6000.h i2c: Change mail address of Oskar Schirmer 2012-05-17 15:15:56 +02:00
i2c-scmi.c ACPI: Remove useless type argument of driver .remove() operation 2013-01-26 00:37:24 +01:00
i2c-sh7760.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-sh_mobile.c i2c: sh_mobile: don't send a stop condition by default inside transfers 2013-02-10 19:55:24 +01:00
i2c-sibyte.c i2c/mips: Fix error return codes from Sibyte i2c bus driver 2010-07-10 09:42:47 +02:00
i2c-simtec.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-sirf.c drivers/i2c/busses: don't check resource with devm_ioremap_resource 2013-05-18 11:55:32 +02:00
i2c-sis96x.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-sis630.c i2c: sis630: checkpatch cleanup 2013-02-11 15:59:40 +01:00
i2c-sis5595.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-stu300.c i2c: stu300: do not request a specific clock name 2013-06-17 13:54:36 +02:00
i2c-taos-evm.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-tegra.c drivers/i2c/busses: don't check resource with devm_ioremap_resource 2013-05-18 11:55:32 +02:00
i2c-tiny-usb.c i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter 2012-07-24 14:13:59 +02:00
i2c-versatile.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-via.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-viapro.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-viperboard.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-wmt.c i2c: vt8500: Add support for I2C bus on Wondermedia SoCs 2013-06-15 13:37:08 +02:00
i2c-xiic.c i2c: xiic: must always write 16-bit words to TX_FIFO 2013-04-23 20:18:34 +02:00
i2c-xlr.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
Kconfig Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
Makefile i2c: Kontron PLD i2c bus driver 2013-07-01 08:35:44 +02:00
scx200_acb.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
scx200_i2c.c i2c/scx200_*: Replace printks with pr_<level>s 2012-10-05 22:23:52 +02:00