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2014-01-27spi: rspi: Add support for loopback modeGeert Uytterhoeven1-8/+14
Add support for specifying loopback mode. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Add support for RSPI on RZ/A1HGeert Uytterhoeven1-9/+92
Add support for the RSPI variant in the RZ/A1H (r7s72100) SoC. Main differences with RSPI on SH are: - Lack of TX only mode, hence we always have to use full duplex transfers, - The Data Register must be accessed used 8-bit operations. RSPI on RZ is matched using the new "rspi-rz" platform device name. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Add support for more than one interruptGeert Uytterhoeven1-19/+87
Add support for multiple interrupts, based on the SDK reference code. This is needed for RZ/A1H, which supports 3 interrupts. When using multiple interrupts, they must be called "rx" (SPRI) and "tx" (SPTI). The error interrupt (SPEI) is not used, as it matters for slave mode only. When using a single interrupt, it may be called "mux". If it cannot be found, the first interrupt in the device's resources will be used. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Merge qspi_send_pio() and qspi_receive_pio()Geert Uytterhoeven1-51/+28
qspi_send_pio() and qspi_receive_pio() are very similar: they both send and receive full duplex data to/from the hardware, but ignore the data stream in the unused direction. Merge them into qspi_transfer_out_in(), now supporting real full duplex. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Merge rspi_send_pio() and rspi_receive_pio()Geert Uytterhoeven1-55/+46
rspi_send_pio() and rspi_receive_pio() are very similar: - the former only sends data, using TX Only Mode, - the latter sends and receives full duplex data to/from the hardware, but uses dummy transmit data. Merge them into rspi_transfer_out_in(), now supporting full duplex if needed. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Abstract transfer_one() for RSPI and QSPIGeert Uytterhoeven1-13/+23
Split off qspi_transfer_one() (which doesn't support DMA yet) from rspi_transfer_one(). Replace the abstraction of send_pio()/receive_pio() by the abstracrion of transfer_one(). Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Add rspi_data_{out,in,out_in}() helpersGeert Uytterhoeven1-61/+56
Add helpers rspi_data_{out,in,out_in}() to write, read, or write and read data to/from the Data Register, taking care of waiting until data or space is available in the buffers. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Abstract 8/16-bit Data Register accessGeert Uytterhoeven1-21/+35
Add rspi_{write,read}_data(), to abstract 8-bit (QSPI, and RSPI on RZ/A1H) versus 16-bit (RSPI) Data Register access. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Use core message handlingGeert Uytterhoeven1-77/+34
Let the generic SPI core handle SPI messages, calling into our rspi_transfer_one() method. rspi_assert_ssl() and rspi_negate_ssl() are absorbed into rspi_prepare_message() and rspi_unprepare_message(), as they actually enable/disable the whole SPI function, instead of just (de)asserting the chip select line. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-27spi: rspi: Remove unused mesg parameter from {send,receive}_pio()Geert Uytterhoeven1-17/+10
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-25Merge tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spiLinus Torvalds46-1478/+1455
Pull spi updates from Mark Brown: "A respun version of the merges for the pull request previously sent with a few additional fixes. The last two merges were fixed up by hand since the branches have moved on and currently have the prior merge in them. Quite a busy release for the SPI subsystem, mostly in cleanups big and small scattered through the stack rather than anything else: - New driver for the Broadcom BC63xx HSSPI controller - Fix duplicate device registration for ACPI - Conversion of s3c64xx to DMAEngine (this pulls in platform and DMA changes upon which the transiton depends) - Some small optimisations to reduce the amount of time we hold locks in the datapath, eliminate some redundant checks and the size of a spi_transfer - Lots of fixes, cleanups and general enhancements to drivers, especially the rspi and Atmel drivers" * tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (112 commits) spi: core: Fix transfer failure when master->transfer_one returns positive value spi: Correct set_cs() documentation spi: Clarify transfer_one() w.r.t. spi_finalize_current_transfer() spi: Spelling s/finised/finished/ spi: sc18is602: Convert to use bits_per_word_mask spi: Remove duplicate code to set default bits_per_word setting spi/pxa2xx: fix compilation warning when !CONFIG_PM_SLEEP spi: clps711x: Add MODULE_ALIAS to support module auto-loading spi: rspi: Add missing clk_disable() calls in error and cleanup paths spi: rspi: Spelling s/transmition/transmission/ spi: rspi: Add support for specifying CPHA/CPOL spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match spi: rspi: Add more QSPI register documentation spi: rspi: Add more RSPI register documentation spi: rspi: Remove dependency on DMAE for SHMOBILE spi/s3c64xx: Correct indentation spi: sh: Use spi_sh_clear_bit() instead of open-coded spi: bitbang: Grammar s/make to make/to make/ spi: sh-hspi: Spelling s/recive/receive/ spi: core: Improve tx/rx_nbits check comments ...
2014-01-24Merge tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds1-0/+10
Pull ACPI and power management updates from Rafael Wysocki: "As far as the number of commits goes, the top spot belongs to ACPI this time with cpufreq in the second position and a handful of PM core, PNP and cpuidle updates. They are fixes and cleanups mostly, as usual, with a couple of new features in the mix. The most visible change is probably that we will create struct acpi_device objects (visible in sysfs) for all devices represented in the ACPI tables regardless of their status and there will be a new sysfs attribute under those objects allowing user space to check that status via _STA. Consequently, ACPI device eject or generally hot-removal will not delete those objects, unless the table containing the corresponding namespace nodes is unloaded, which is extremely rare. Also ACPI container hotplug will be handled quite a bit differently and cpufreq will support CPU boost ("turbo") generically and not only in the acpi-cpufreq driver. Specifics: - ACPI core changes to make it create a struct acpi_device object for every device represented in the ACPI tables during all namespace scans regardless of the current status of that device. In accordance with this, ACPI hotplug operations will not delete those objects, unless the underlying ACPI tables go away. - On top of the above, new sysfs attribute for ACPI device objects allowing user space to check device status by triggering the execution of _STA for its ACPI object. From Srinivas Pandruvada. - ACPI core hotplug changes reducing code duplication, integrating the PCI root hotplug with the core and reworking container hotplug. - ACPI core simplifications making it use ACPI_COMPANION() in the code "glueing" ACPI device objects to "physical" devices. - ACPICA update to upstream version 20131218. This adds support for the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug facilities. From Bob Moore, Lv Zheng and Betty Dall. - Init code change to carry out the early ACPI initialization earlier. That should allow us to use ACPI during the timekeeping initialization and possibly to simplify the EFI initialization too. From Chun-Yi Lee. - Clenups of the inclusions of ACPI headers in many places all over from Lv Zheng and Rashika Kheria (work in progress). - New helper for ACPI _DSM execution and rework of the code in drivers that uses _DSM to execute it via the new helper. From Jiang Liu. - New Win8 OSI blacklist entries from Takashi Iwai. - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria, Tang Chen, Zhang Rui. - intel_pstate driver updates, including proper Baytrail support, from Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra. - Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski. - powernow-k6 cpufreq driver fixes from Mikulas Patocka. - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown. - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar. - cpuidle cleanups from Bartlomiej Zolnierkiewicz. - Support for hibernation APM events from Bin Shi. - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled during thaw transitions from Bjørn Mork. - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson. - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa, Rashika Kheria. - New tool for profiling system suspend from Todd E Brandt and a cpupower tool cleanup from One Thousand Gnomes" * tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits) thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412) cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ Documentation: cpufreq / boost: Update BOOST documentation cpufreq: exynos: Extend Exynos cpufreq driver to support boost cpufreq / boost: Kconfig: Support for software-managed BOOST acpi-cpufreq: Adjust the code to use the common boost attribute cpufreq: Add boost frequency support in core intel_pstate: Add trace point to report internal state. cpufreq: introduce cpufreq_generic_get() routine ARM: SA1100: Create dummy clk_get_rate() to avoid build failures cpufreq: stats: create sysfs entries when cpufreq_stats is a module cpufreq: stats: free table and remove sysfs entry in a single routine cpufreq: stats: remove hotplug notifiers cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly cpufreq: speedstep: remove unused speedstep_get_state platform: introduce OF style 'modalias' support for platform bus PM / tools: new tool for suspend/resume performance optimization ACPI: fix module autoloading for ACPI enumerated devices ACPI: add module autoloading support for ACPI enumerated devices ACPI: fix create_modalias() return value handling ...
2014-01-23Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds4-77/+76
Pull ARM SoC cleanups from Olof Johansson: "This is the branch where we usually queue up cleanup efforts, moving drivers out of the architecture directory, header file restructuring, etc. Sometimes they tangle with new development so it's hard to keep it strictly to cleanups. Some of the things included in this branch are: * Atmel SAMA5 conversion to common clock * Reset framework conversion for tegra platforms - Some of this depends on tegra clock driver reworks that are shared with Mike Turquette's clk tree. * Tegra DMA refactoring, which are shared branches with the DMA tree. * Removal of some header files on exynos to prepare for multiplatform" * tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits) ARM: mvebu: move Armada 370/XP specific definitions to armada-370-xp.h ARM: mvebu: remove prototypes of non-existing functions from common.h ARM: mvebu: move ARMADA_XP_MAX_CPUS to armada-370-xp.h serial: sh-sci: Rework baud rate calculation serial: sh-sci: Compute overrun_bit without using baud rate algo serial: sh-sci: Remove unused GPIO request code serial: sh-sci: Move overrun_bit and error_mask fields out of pdata serial: sh-sci: Support resources passed through platform resources serial: sh-sci: Don't check IRQ in verify port operation serial: sh-sci: Set the UPF_FIXED_PORT flag serial: sh-sci: Remove duplicate interrupt check in verify port op serial: sh-sci: Simplify baud rate calculation algorithms serial: sh-sci: Remove baud rate calculation algorithm 5 serial: sh-sci: Sort headers alphabetically ARM: EXYNOS: Kill exynos_pm_late_initcall() ARM: EXYNOS: Consolidate selection of PM_GENERIC_DOMAINS for Exynos4 ARM: at91: switch Calao QIL-A9260 board to DT clk: at91: fix pmc_clk_ids data type attriubte PM / devfreq: use inclusion <mach/map.h> instead of <plat/map-s5p.h> ARM: EXYNOS: remove <mach/regs-clock.h> for exynos ...
2014-01-23Merge commit 'spi/topic/sc18is602' into spi-linusMark Brown1-7/+1
2014-01-23Merge commit 'spi/fix/rcar' into spi-linusMark Brown1-3/+4
2014-01-23Merge remote-tracking branches 'spi/topic/pxa2xx', 'spi/topic/qspi', 'spi/topic/s3c24xx', 'spi/topic/s3c64xx', 'spi/topic/sh', 'spi/topic/tegra114', 'spi/topic/tegra20-sflash', 'spi/topic/tegra20-slink', 'spi/topic/txx9' and 'spi/topic/xcomm' into spi-linusMark Brown11-269/+178
2014-01-23Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/gpio', 'spi/topic/hspi', 'spi/topic/mpc512x', 'spi/topic/msiof', 'spi/topic/nuc900', 'spi/topic/oc-tiny', 'spi/topic/omap', 'spi/topic/orion' and 'spi/topic/pci' into spi-linusMark Brown14-190/+151
2014-01-23Merge remote-tracking branches 'spi/topic/bcm2835', 'spi/topic/bcm63xx', 'spi/topic/bcm63xx-hsspi', 'spi/topic/bitbang', 'spi/topic/bpw', 'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/davinci', 'spi/topic/dw' and 'spi/topic/falcon' into spi-linusMark Brown21-452/+763
2014-01-23Merge remote-tracking branches 'spi/fix/bcm63xx', 'spi/fix/dspi', 'spi/fix/hspi', 'spi/fix/imx', 'spi/fix/msiof', 'spi/fix/pxa2xx', 'spi/fix/qspi', 'spi/topic/altera', 'spi/topic/ath79' and 'spi/topic/atmel' into spi-linusMark Brown10-530/+313
2014-01-23Merge remote-tracking branch 'spi/topic/core' into spi-linusMark Brown1-20/+26
2014-01-23Merge remote-tracking branch 'spi/fix/core' into spi-linusMark Brown1-8/+20
2014-01-21spi: core: Fix transfer failure when master->transfer_one returns positive valueAxel Lin1-1/+3
master->transfer_one returns positive value is not a error. So set ret to 0 when master->transfer_one returns positive value. Otherwise, I hit "spi_master spi0: failed to transfer one message from queue" error when my transfer_one callback returns 1. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-21spi: Spelling s/finised/finished/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-17spi: sc18is602: Convert to use bits_per_word_maskAxel Lin1-7/+1
Since commit 543bb25 "spi: add ability to validate xfer->bits_per_word in SPI core", the driver can set bits_per_word_mask for the master then the SPI core will reject transfers that attempt to use an unsupported bits_per_word value. So we can remove the bits_per_word checking in sc18is602_check_transfer() and let SPI core handle the checking. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-17spi: Remove duplicate code to set default bits_per_word settingAxel Lin8-37/+0
The implementation in spi_setup() already set spi->bits_per_word = 8 when spi->bits_per_word is 0 before calling spi->master->setup. So we don't need to do it again in setup() callback. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Barry Song <Baohua.Song@csr.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-17Merge branches 'topic/sc18is602' and 'topic/rspi' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-bpwMark Brown10-168/+215
2014-01-16ACPI: fix module autoloading for ACPI enumerated devicesZhang Rui1-0/+10
ACPI enumerated devices has ACPI style _HID and _CID strings, all of these strings can be used for both driver loading and matching. Currently, in Platform, I2C and SPI bus, the ACPI style driver matching is supported by invoking acpi_driver_match_device() in bus .match() callback. But, the module autoloading is still broken. For example, there is any ACPI device with _HID "INTABCD" that is enumerated to platform bus, and we have a driver that can probe it. The driver exports its module_alias as "acpi:INTABCD" use the following code static const struct acpi_device_id xxx_acpi_match[] = { { "INTABCD", 0 }, { } }; MODULE_DEVICE_TABLE(acpi, xxx_acpi_match); But, unfortunately, the device' modalias is shown as "platform:INTABCD:00", please refer to modalias_show() and platform_uevent() in drivers/base/platform.c. This results in that the driver will not be loaded automatically when the device node is created, because their modalias do not match. This also applies to I2C and SPI bus. With this patch, the device' modalias will be shown as "acpi:INTABCD" as well. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Mark Brown <broonie@linaro.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-16spi/pxa2xx: fix compilation warning when !CONFIG_PM_SLEEPMika Westerberg1-1/+1
CONFIG_PM will be set if either or both CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME is set. Compiling the driver with !CONFIG_PM_SLEEP causes following compilation warning: drivers/spi/spi-pxa2xx.c:1270:12: warning: ‘pxa2xx_spi_suspend’ defined but not used [-Wunused-function] Fix this by using CONFIG_PM_SLEEP instead. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-14spi: clps711x: Add MODULE_ALIAS to support module auto-loadingAxel Lin1-0/+1
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-14spi: rspi: Add missing clk_disable() calls in error and cleanup pathsGeert Uytterhoeven1-4/+7
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-14Merge branch 'topic/rcar' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-rspiMark Brown9-40/+46
2014-01-14spi: rspi: Spelling s/transmition/transmission/Geert Uytterhoeven1-2/+2
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: rspi: Add support for specifying CPHA/CPOLGeert Uytterhoeven1-2/+10
Add support for specifying the SPI clock phase and polarity, based on the SDK reference code. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent matchMika Westerberg1-0/+2
Commit cddb339badb0 (spi/pxa2xx: convert to dma_request_slave_channel_compat()) converted the driver to use ACPI provided DMA helpers but it forgot to initialize the platform data for the channels to -1. Failing to do so will result inadvertent match in the filter function because 0 is a valid channel number. Prevent this from happening by initializing both platform data channels correctly to -1. Fixes: cddb339badb0 (spi/pxa2xx: convert to dma_request_slave_channel_compat()) Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
2014-01-13spi: rspi: Add more QSPI register documentationGeert Uytterhoeven1-6/+19
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: rspi: Add more RSPI register documentationGeert Uytterhoeven1-79/+92
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: rspi: Remove dependency on DMAE for SHMOBILEGeert Uytterhoeven1-1/+1
On ARM-based SHMOBILE, the rspi driver builds and works fine without the DMA controller driver, hence relax the dependencies. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi/s3c64xx: Correct indentationGeert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: sh: Use spi_sh_clear_bit() instead of open-codedAxel Lin1-8/+2
We have a spi_sh_clear_bit() function, there's no reason not to use it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: bitbang: Grammar s/make to make/to make/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: sh-hspi: Spelling s/recive/receive/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: core: Improve tx/rx_nbits check commentsGeert Uytterhoeven1-3/+2
- Rephrase the comments about tx/rx_nbits validity checks, - Remove the stale comment about SPI_3WIRE (the code it refers to was removed in commit 368ca4e0c75612c0a4d6bbcef7efb944604340c2 ("spi: Eliminate 3WIRE spi_transfer check")). Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: ti-qspi: Fixup driver nameAxel Lin1-1/+2
The driver name in current code looks like a compatible string which is not the naming convention for platform drivers. Fix it and also add modalias since this driver can be built as a module. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: ti-qspi: Simplify qspi_write_msg and qspi_read_msg implementationAxel Lin1-41/+20
Make the unit of wlen to be byte, and simplify the code to avoid duplicate code for different wlen cases. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-13spi: altera: Remove unneeded NULL checking for hw->bitbang.masterAxel Lin1-2/+0
We already has NULL test for master after calling spi_alloc_master(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-12spi: mpc512x: adjust to OF based clock lookupGerhard Sittig1-8/+18
after device tree based clock lookup became available, the peripheral driver need no longer construct clock names which include the PSC index, remove the "psc%d_mclk" template and unconditionally use 'mclk' acquire and release the 'ipg' clock item for register access as well Cc: Mark Brown <broonie@kernel.org> Cc: linux-spi@vger.kernel.org Signed-off-by: Gerhard Sittig <gsi@denx.de> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Anatolij Gustschin <agust@denx.de>
2014-01-10spi: clps711x: Use devm_gpio_request()Alexander Shiyan1-20/+2
This patch replaces gpio_request() with devm_ API. As a result this simplifies error path and eliminates "remove" function. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-09spi: oc-tiny: Simplify tiny_spi_txrx_bufs implementation when irq is not usedAxel Lin1-51/+11
Currently we have similar code for (txp && rxp), (txp && !rxp), (!rxp & txp), and (!txp && !rxp) cases. This patch refactors the code a bit to avoid duplicate similar code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-09spi: atmel: Refactor spi-atmel to use SPI framework queueWenyou Yang1-458/+220
Replace the deprecated master->transfer with transfer_one_message() and allow the SPI subsystem handle all the queuing of messages. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Tested-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-09spi: fsl-dspi: Add missing breaks for switch casesAxel Lin1-0/+2
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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