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linux/drivers/i2c/busses
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Jisheng Zhang 67105c5a94 i2c: designware: use {readl|writel}_relaxed instead of readl/writel 
readl/writel is too expensive especially on Cortex A9 w/ outer L2 cache.
This introduces i2c read/write delays on Marvell BG2/BG2Q SoCs when there
are heavy L2 cache maintenance operations at the same time.

The driver does not perform DMA, so it's safe to use the relaxed version.
From another side, the relaxed io accessor macros are available on all
architectures now, so we can use the relaxed versions instead.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
 		2015-01-23 17:09:15 +01:00
..
Kconfig Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2014-12-20 13:52:52 -08:00
Makefile powerpc updates for 3.19 batch 2 2014-12-19 12:57:45 -08:00
i2c-acorn.c i2c: acorn: is tristate and should use module.h 2014-01-24 18:21:11 +01:00
i2c-ali15x3.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-ali1535.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-ali1563.c i2c: ali1563: fix checkpatch.pl issues 2014-05-22 10:09:21 +02:00
i2c-amd756-s4882.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-amd756.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-amd8111.c i2c: remove DEFINE_PCI_DEVICE_TABLE macro 2014-03-13 09:44:59 +01:00
i2c-at91.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-au1550.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-axxia.c i2c: axxia: Add I2C driver for AXM55xx 2014-10-03 14:11:53 +02:00
i2c-bcm-kona.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-bcm2835.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-bfin-twi.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-cadence.c i2c: cadence: Check for errata condition involving master receive 2015-01-14 11:36:58 +01:00
i2c-cbus-gpio.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-cpm.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-cros-ec-tunnel.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2014-10-19 12:50:44 -07:00
i2c-davinci.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-designware-core.c i2c: designware: use {readl|writel}_relaxed instead of readl/writel 2015-01-23 17:09:15 +01:00
i2c-designware-core.h i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-designware-pcidrv.c i2c: designware-pci: no need to provide clk_khz 2015-01-23 15:38:13 +01:00
i2c-designware-platdrv.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-diolan-u2c.c i2c: remove unnecessary OOM messages 2014-06-02 19:24:33 +02:00
i2c-dln2.c i2c: dln2: Simplify return flow for dln2_i2c_enable 2014-11-19 17:12:37 +00:00
i2c-efm32.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-eg20t.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-elektor.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-exynos5.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-gpio.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-highlander.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-hix5hd2.c PM: Merge the SET*_RUNTIME_PM_OPS() macros 2014-12-04 00:51:30 +01:00
i2c-hydra.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-i801.c i2c: i801: Add DeviceIDs for SunrisePoint LP 2014-11-12 17:19:13 +01:00
i2c-ibm_iic.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-ibm_iic.h
…
i2c-img-scb.c i2c: img-scb: Add Imagination Technologies I2C SCB driver 2014-11-17 19:54:24 +01:00
i2c-imx.c i2c: imx: whitespace and checkpatch cleanup 2015-01-22 16:34:39 +01:00
i2c-iop3xx.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-iop3xx.h i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-isch.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-ismt.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-kempld.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-meson.c i2c: add support for Amlogic Meson I2C controller 2014-11-18 16:16:44 +01:00
i2c-mpc.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-mv64xxx.c i2c: mv64xxx: rework offload support to fix several problems 2014-12-17 19:26:03 +01:00
i2c-mxs.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-nforce2-s4985.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-nforce2.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-nomadik.c PM: Merge the SET*_RUNTIME_PM_OPS() macros 2014-12-04 00:51:30 +01:00
i2c-ocores.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-octeon.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-omap.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-opal.c i2c: Driver to expose PowerNV platform i2c busses 2014-12-14 12:44:46 +11:00
i2c-parport-light.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-parport.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-parport.h i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pasemi.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pca-isa.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pca-platform.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-piix4.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pmcmsp.c i2c: pmcmsp: remove dead code 2015-01-13 10:37:43 +01:00
i2c-pnx.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-powermac.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-puv3.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-pxa-pci.c i2c: remove DEFINE_PCI_DEVICE_TABLE macro 2014-03-13 09:44:59 +01:00
i2c-pxa.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-qup.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-rcar.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-riic.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-rk3x.c i2c: rk3x: Account for repeated start time requirement 2015-01-13 16:21:05 +01:00
i2c-robotfuzz-osif.c i2c: Add bus driver for for OSIF USB i2c device. 2014-01-13 13:56:56 +01:00
i2c-s3c2410.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-scmi.c i2c: delete non-required instances of include <linux/init.h> 2014-01-24 18:24:31 +01:00
i2c-sh7760.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sh_mobile.c i2c: sh_mobile: fix uninitialized var when debug is enabled 2014-12-20 09:28:09 +01:00
i2c-sibyte.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-simtec.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-sirf.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sis96x.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-sis630.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-sis5595.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-st.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-stu300.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sun6i-p2wi.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-taos-evm.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-tegra.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-tiny-usb.c i2c: i2c-tiny-usb: Remove RobotFuzz USB vendor:product ID 2014-01-13 13:56:52 +01:00
i2c-versatile.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-via.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-viapro.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-viperboard.c i2c: viperboard: remove superfluous assignment 2014-01-09 22:18:33 +01:00
i2c-wmt.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-xiic.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-xlr.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
scx200_acb.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00