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path: root/drivers/spi
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2012-03-09spi-topcliff-pch: supports a spi mode setup and bit order setup by IO controlTomoya MORINAGA
This patch supports a spi mode setup and bit order setup by IO control. spi mode: mode 0 to mode 3 bit order: LSB first, MSB first Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi-topcliff-pch: Fix issue for transmitting over 4KByteTomoya MORINAGA
Currently, when spi-topcliff-pch receives transmit request over 4KByte, this driver can't process correctly. This driver needs to divide the data into 4Kbyte unit. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi-topcliff-pch: Modify pci-bus number dynamically to get DMA device infoTomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi/imx: simplify error handling to free gpiosAxel Lin
Simplify the error handling by moving the code to free gpios in one place. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: Convert to DEFINE_PCI_DEVICE_TABLEAxel Lin
Convert static struct pci_device_id *[] to static DEFINE_PCI_DEVICE_TABLE tables. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: add Broadcom BCM63xx SPI controller driverFlorian Fainelli
This patch adds support for the SPI controller found on the Broadcom BCM63xx SoCs. Signed-off-by: Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09SPI: add CSR SiRFprimaII SPI controller driverZhiwu Song
CSR SiRFprimaII has two SPIs (SPI0 and SPI1). Features: * Master and slave modes * 8-/12-/16-/32-bit data unit * 256 bytes receive data FIFO and 256 bytes transmit data FIFO * Multi-unit frame * Configurable SPI_EN (chip select pin) active state * Configurable SPI_CLK polarity * Configurable SPI_CLK phase * Configurable MSB/LSB first Signed-off-by: Zhiwu Song <zhiwu.song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi-topcliff-pch: fix -Wuninitialized warningDanny Kukawka
Fix for: drivers/spi/spi-topcliff-pch.c: In function ‘pch_spi_handler_sub’: drivers/spi/spi-topcliff-pch.c:325:17: warning: ‘bpw_len’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘rx_index’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘tx_index’ may be used uninitialized in this function [-Wuninitialized] Move usage of tx_index, rx_index and bpw_len into the same block as where they are set to prevent uninitialized usage. v2: instead of init variables with 0 move the whole block Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: Mark spi_register_board_info() __devinitMark Brown
Some systems have SPI devices located on plugin modules which are enumerated at runtime as devices. The drivers for these plugin modules need to register their SPI devices at probe() time so want to be able to call spi_register_board_info() but that function is currently marked as __init rather than __devinit so this usage isn't legal. Change the annotation to __devinit to handle this. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi/s3c64xx: Convert to using core message queueMark Brown
Convert the s3c64xx driver to using the new message queue factored out of the pl022 driver by Linus Walleij, saving us a nice block of code and getting the benefits of improvements implemented in the core. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: controller drivers don't need to depend on SPI_MASTER explicitlyUwe Kleine-König
They are all defined in an if SPI_MASTER ... endif block. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi/doc: spi_master_put must be followed up by kfreeUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: Add SuperH HSPI prototype driverKuninori Morimoto
This patch adds SuperH HSPI driver. It is still prototype driver, but has enough function at this point. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-08Merge branch 'next/cleanup-s3c24xx' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup * 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) ARM: S3C24XX: remove call to s3c24xx_setup_clocks ARM: S3C24XX: add get_rate for clk_p on S3C2416/2443 ARM: S3C24XX: add get_rate for clk_h on S3C2416/2443 ARM: S3C24XX: remove XXX_setup_clocks method from S3C2443 ARM: S3C24XX: remove obsolete S3C2416_DMA option ARM: S3C24XX: Reuse S3C2443 dma for S3C2416 ARM: S3C24XX: Fix indentation of dma-s3c2443 ARM: S3C24XX: Move device setup files to mach directory ARM: S3C24XX: Consolidate Simtec extensions ARM: S3C24XX: move simtec-specific code to mach directory ARM: S3C24XX: Move common-smdk code to mach directory ARM: S3C24XX: Move s3c2443-clock.c to mach-s3c24xx ARM: s3c2410_defconfig: update s3c2410_defconfig ARM: S3C2443: move mach-s3c2443/* into mach-s3c24xx/ ARM: S3C2440: move mach-s3c2440/* into mach-s3c24xx/ ARM: S3C2416: move mach-s3c2416/* into mach-s3c24xx/ ARM: S3C2412: move mach-s3c2412/* into mach-s3c24xx/ ARM: S3C2410: move mach-s3c2410/* into mach-s3c24xx/ ARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XX ARM: S3C2410: move s3c2410_baseclk_add to clock.h ...
2012-03-07spi: create a message queueing infrastructureLinus Walleij
This rips the message queue in the PL022 driver out and pushes it into (optional) common infrastructure. Drivers that want to use the message pumping thread will need to define the new per-messags transfer methods and leave the deprecated transfer() method as NULL. Most of the design is described in the documentation changes that are included in this patch. Since there is a queue that need to be stopped when the system is suspending/resuming, two new calls are implemented for the device drivers to call in their suspend()/resume() functions: spi_master_suspend() and spi_master_resume(). ChangeLog v1->v2: - Remove Kconfig entry and do not make the queue support optional at all, instead be more agressive and have it as part of the compulsory infrastructure. - If the .transfer() method is implemented, delete print a small deprecation notice and do not start the transfer pump. - Fix a bitrotted comment. ChangeLog v2->v3: - Fix up a problematic sequence courtesy of Chris Blair. - Stop rather than destroy the queue on suspend() courtesy of Chris Blair. Signed-off-by: Chris Blair <chris.blair@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-07spi: add support for Renesas RSPIShimoda, Yoshihiro
The SH7757 has RSPI module. This patch supports it. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-07spi/spi-sh: add IORESOURCE_MEM_TYPE_MASK decoding for access sizeShimoda, Yoshihiro
This SPI controller's access size is 32, or 8-bit. The previous driver supported 32-bit only. So, this patch adds IORESOURCE_MEM_TYPE_MASK decoding, an then, the driver can handle the SPI controller of 8-bit. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-03ARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XXKukjin Kim
This patch changes the ARCH name to "ARCH_S3C24XX" for Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, and S3C2450 SoCs so that we can merge the mach-xxx directories and plat-s3c24xx dir. to just one mach-s3c24xx for them. I think this should be sent to upstream via samsung tree because this touches many samsung stuff. Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Greg Kroah-Hartman <gregkh@suse.de> [for the gadget part:] Acked-by: Felipe Balbi <balbi@ti.com> [for the framebuffer (video) part:] Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> [For the watchdog-part:] Acked-by: Wim Van Sebroeck <wim@iguana.be> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Liam Girdwood <lrg@ti.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-02-22dmaengine: Pass dma_slave_config .device_fc = NULL for all existing usersViresh Kumar
.device_fc is added in struct dma_slave_config recently. All user drivers, which want DMA to be the flow controller must pass this field as false. As earlier driver don't look to use this feature, mark it false for now. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-02-15spi/omap: Add DT support to McSPI driverBenoit Cousson
Add device tree support to the OMAP2+ McSPI driver. Add the bindings documentation. Based on original code from Rajendra. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-13Fix section mismatch in spi-pl022.cRussell King
WARNING: drivers/spi/built-in.o(.devinit.text+0xdb8): Section mismatch in reference from the function pl022_probe() to the function .init.text:pl022_dma_probe() The function __devinit pl022_probe() references a function __init pl022_dma_probe(). If pl022_dma_probe is only used by pl022_probe then annotate pl022_dma_probe with a matching annotation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-05spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driverDanny Kukawka
Rename static struct pci_driver pch_spi_pcidev to pch_spi_pcidev_driver to get rid of warnings from modpost checks. Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-05spi: Add spi-s3c64xx driver dependency on ARCH_EXYNOS4Sylwester Nawrocki
The spi-s3c64xx driver is also used on Exynos4 so update the dependency to enable build on those platforms. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [grant.likely: relax depends to ARCH_EXYNOS instead of ARCH_EXYNOS4] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-02spi/pl022: Add high priority message pump supportChris Blair
This switches the PL022 worker to a kthread in order to get hold of a mechanism to control the message pump priority. On low-latency systems elevating the message kthread to realtime priority give a real sleek response curve. This has been confirmed by measurements. Realtime priority elevation for a certain PL022 port can be requested from platform data. Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Chris Blair <chris.blair@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-01spi/nuc900: Remove unnecessary memset of struct nuc900_spiTobias Klauser
The memory allocated using kzalloc by spi_alloc_master so it doesn't need to be set to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-01-31ARM: S3C24XX: move spi-s3c24xx platdata out of machHeiko Stuebner
spi.h now only contains the definition of the platform data structure for the driver in spi-s3c24xx.c . Therefore it does not need to stay in include/mach but can instead live in linux/spi/s3c24xx.h . Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-30Merge branch 'spi/s3c64xx' of ↵Grant Likely
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc Conflicts: drivers/spi/spi-s3c64xx.c
2012-01-21spi/s3c64xx: Implement runtime PM supportMark Brown
Enable and disable the clocks to the SPI controller using runtime PM. This serves the dual purpose of reducing power consumption a little and letting the core know when the device is idle. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Heiko Stuebner <heiko@sntech.de>
2012-01-21spi/s3c64xx: Convert to dev_pm_opsMark Brown
In preparation for the addition of runtime PM ops. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-21spi/s3c64xx: Log error interruptsMark Brown
Although the hardware supports interrupts we're not currently using them at all since for small transfers the overhead is greater than that for busy waiting and for large transfers we have interrupts from the DMA. This means that if the hardware reports an error (especially one which might not stall transfer) we might miss it. Take a first pass at dealing with such errors by enabling the interrupt if we can and logging the errors if they happen. Ideally we'd report the error via the affected transfer but since we're in master mode it's very difficult to trigger errors at present and this code is much simpler. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-17Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits) ARM: mach-shmobile: specify CHCLR registers on SH7372 dma: shdma: fix runtime PM: clear channel buffers on reset dma/imx-sdma: save irq flags when use spin_lock in sdma_tx_submit dmaengine/ste_dma40: clear LNK on channel startup dmaengine: intel_mid_dma: remove legacy pm interface ASoC: mxs: correct 'direction' of device_prep_dma_cyclic dmaengine: intel_mid_dma: error path fix dmaengine: intel_mid_dma: locking and freeing fixes mtd: gpmi-nand: move to dma_transfer_direction mtd: fix compile error for gpmi-nand mmc: mxs-mmc: fix the dma_transfer_direction migration dmaengine: add DMA_TRANS_NONE to dma_transfer_direction dma: mxs-dma: Don't use CLKGATE bits in CTRL0 to disable DMA channels dma: mxs-dma: make mxs_dma_prep_slave_sg() multi user safe dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled. dma: mxs-dma: fix a typo in comment DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove video i.MX IPU: Fix display connections i.MX IPU DMA: Fix wrong burstsize settings dmaengine/ste_dma40: allow fixed physical channel ... Fix up conflicts in drivers/dma/{Kconfig,mxs-dma.c,pl330.c} The conflicts looked pretty trivial, but I'll ask people to verify them.
2012-01-14Merge tags 'devicetree-for-linus' and 'spi-for-linus' of ↵Linus Torvalds
git://git.secretlab.ca/git/linux-2.6 2nd set of device tree changes and SPI bug fixes for v3.3 * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6: of/irq: Add interrupts-names property to name an irq resource of/address: Add reg-names property to name an iomem resource * tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6: spi/tegra: depend instead of select TEGRA_SYSTEM_DMA
2012-01-14Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (119 commits) MIPS: Delete unused function add_temporary_entry. MIPS: Set default pci cache line size. MIPS: Flush huge TLB MIPS: Octeon: Remove SYS_SUPPORTS_HIGHMEM. MIPS: Octeon: Add support for OCTEON II PCIe MIPS: Octeon: Update PCI Latency timer and enable more error reporting. MIPS: Alchemy: Update cpu-feature-overrides MIPS: Alchemy: db1200: Improve PB1200 detection. MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code. MIPS: Alchemy: chain IRQ controllers to MIPS IRQ controller MIPS: Alchemy: irq: register pm at irq init time MIPS: Alchemy: Touchscreen support on DB1100 MIPS: Alchemy: Hook up IrDA on DB1000/DB1100 net/irda: convert au1k_ir to platform driver. MIPS: Alchemy: remove unused board headers MTD: nand: make au1550nd.c a platform_driver MIPS: Netlogic: Mark Netlogic chips as SMT capable MIPS: Netlogic: Add support for XLP 3XX cores MIPS: Netlogic: Merge some of XLR/XLP wakup code MIPS: Netlogic: Add default XLP config. ... Fix up trivial conflicts in arch/mips/kernel/{perf_event_mipsxx.c, traps.c} and drivers/tty/serial/Makefile
2012-01-09Merge tag 'cleanup2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Cleanups for the Samsung platforms Various cleanup changes that the device driver changes are built upon. Since the samsung cleanups depend on the device tree series, which depends on the first set of cleanups for tegra. * tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: EXYNOS: Use gpio_request_one ARM: S5PV210: Use gpio_request_one ARM: S3C64XX: Modified according to SPI consolidation work ARM: S5PV210: Modified files for SPI consolidation work ARM: S5P64X0: Modified files for SPI consolidation work ARM: S5PC100: Modified files for SPI consolidation work ARM: S3C64XX: Modified files for SPI consolidation work ARM: SAMSUNG: Consolidation of SPI platform devices to plat-samsung ARM: SAMSUNG: Remove SPI bus clocks from platform data ARM: S5PV210: Add SPI clkdev support ARM: S5P64X0: Add SPI clkdev support ARM: S5PC100: Add SPI clkdev support ARM: S3C64XX: Add SPI clkdev support spi/s3c64xx: Use bus clocks created using clkdev mmc: sdhci-s3c: Use generic clock names for sdhci bus clock options ARM: SAMSUNG: Add lookup of sdhci-s3c clocks using generic names ARM: SAMSUNG: Remove SDHCI bus clocks from platform data ARM: SAMSUNG: Use kmemdup rather than duplicating its implementation ARM: EXYNOS: remove exynos4_scu_enable()
2012-01-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits) Kconfig: acpi: Fix typo in comment. misc latin1 to utf8 conversions devres: Fix a typo in devm_kfree comment btrfs: free-space-cache.c: remove extra semicolon. fat: Spelling s/obsolate/obsolete/g SCSI, pmcraid: Fix spelling error in a pmcraid_err() call tools/power turbostat: update fields in manpage mac80211: drop spelling fix types.h: fix comment spelling for 'architectures' typo fixes: aera -> area, exntension -> extension devices.txt: Fix typo of 'VMware'. sis900: Fix enum typo 'sis900_rx_bufer_status' decompress_bunzip2: remove invalid vi modeline treewide: Fix comment and string typo 'bufer' hyper-v: Update MAINTAINERS treewide: Fix typos in various parts of the kernel, and fix some comments. clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR gpio: Kconfig: drop unknown symbol 'CS5535_GPIO' leds: Kconfig: Fix typo 'D2NET_V2' sound: Kconfig: drop unknown symbol ARCH_CLPS7500 ... Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new kconfig additions, close to removed commented-out old ones)
2012-01-07Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
spi changes queued up for v3.3 merge window * tag 'spi-for-linus-20120104' of git://git.secretlab.ca/git/linux-2.6: spi: Fix device unregistration when unregistering the bus master spi-topcliff-pch: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor spi-topcliff-pch: Support new device LAPIS Semiconductor ML7831 IOH spi/omap: Correct the error path spi/omap: call pm_runtime_disable in error path and remove spi/omap: Use a workqueue per omap2_mcspi controller
2012-01-07Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
Changes queued in gpio/next for the start of the 3.3 merge window * tag 'gpio-for-linus-20120104' of git://git.secretlab.ca/git/linux-2.6: gpio: Add decode of WM8994 GPIO configuration gpio: Convert GPIO drivers to module_platform_driver gpio: Fix typo in comment in Samsung driver gpio: Explicitly index samsung_gpio_cfgs gpio: Add Linus Walleij as gpio co-maintainer of: Add device tree selftests of: create of_phandle_args to simplify return of phandle parsing data gpio/powerpc: Eliminate duplication of of_get_named_gpio_flags() gpio/microblaze: Eliminate duplication of of_get_named_gpio_flags() gpiolib: output basic details and consolidate gpio device drivers pch_gpio: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH spi/pl022: make the chip deselect handling thread safe spi/pl022: add support for pm_runtime autosuspend spi/pl022: disable the PL022 block when unused spi/pl022: move device disable to workqueue thread spi/pl022: skip default configuration before suspending spi/pl022: fix build warnings spi/pl022: only enable RX interrupts when TX is complete
2012-01-06Merge branch 'amba-modalias' of ↵Linus Torvalds
git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'amba-modalias' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: sound: aaci: Enable module alias autogeneration for AMBA drivers watchdog: sp805: Enable module alias autogeneration for AMBA drivers fbdev: amba: Enable module alias autogeneration for AMBA drivers serial: pl011: Enable module alias autogeneration for AMBA drivers serial: pl010: Enable module alias autogeneration for AMBA drivers spi: pl022: Enable module alias autogeneration for AMBA drivers rtc: pl031: Enable module alias autogeneration for AMBA drivers rtc: pl030: Enable module alias autogeneration for AMBA drivers mmc: mmci: Enable module alias autogeneration for AMBA drivers input: ambakmi: Enable module alias autogeneration for AMBA drivers gpio: pl061: Enable module alias autogeneration for AMBA drivers dmaengine: pl330: Enable module alias autogeneration for AMBA drivers dmaengine: pl08x: Enable module alias autogeneration for AMBA drivers hwrng: nomadik: Enable module alias autogeneration for AMBA drivers ARM: amba: Auto-generate AMBA driver module aliases during modpost ARM: amba: Move definition of struct amba_id to mod_devicetable.h
2012-01-04Merge branch 'spi/next' (early part) into spi/mergeGrant Likely
2012-01-02spi/tegra: depend instead of select TEGRA_SYSTEM_DMAOlof Johansson
It's unlikely that anyone ever wants to turn off SYSTEM_DMA, but just in case, it makes more sense to have the driver depend on it than select it. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-12-23spi/s3c64xx: Use bus clocks created using clkdevPadmavathi Venna
This patch modifies the driver to stop depending on the clock names being passed from platform and switch over to lookup clocks generic names using clkdev Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-12-13spi: Fix device unregistration when unregistering the bus masterLaurent Pinchart
Device are added as children of the bus master's parent device, but spi_unregister_master() looks for devices to unregister in the bus master's children. This results in the child devices not being unregistered. Fix this by registering devices as direct children of the bus master. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-12-13Merge branch 'pl022' of ↵Grant Likely
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into gpio/next
2011-12-07MIPS: Alchemy: Au1300 SoC supportManuel Lauss
Add basic support for the Au1300 variant(s): - New GPIO/Interrupt controller - DBDMA ids - USB setup - MMC support - enable various PSC drivers - detection code. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2866/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07spi/gpio: fix section mismatch warningManuel Lauss
Fixes: The function __devinit spi_gpio_probe() references a function __init spi_gpio_alloc.isra.4(). If spi_gpio_alloc.isra.4 is only used by spi_gpio_probe then annotate spi_gpio_alloc.isra.4 with a matching annotation. [wsa: fix spi_gpio_request(), too] Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-07spi/fsl-espi: disable CONFIG_SPI_FSL_ESPI=m buildJiri Slaby
When spi_fsl_espi is chosen to be built as a module, there is a build error because we test only CONFIG_SPI_FSL_ESPI in declaration of struct mpc8xxx_spi in drivers/spi/spi_fsl_lib.h. Also some called functions are not exported. So we forbid CONFIG_SPI_FSL_ESPI to be tristate here. The error looks like: drivers/spi/spi_fsl_espi.c: In function 'fsl_espi_bufs': drivers/spi/spi_fsl_espi.c:232: error: 'struct mpc8xxx_spi' has no member named 'len' ... Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Kumar Gala <galak@kernel.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-07spi/nuc900: Include linux/module.hAxel Lin
Include linux/module.h to fix below build error: CC drivers/spi/spi-nuc900.o drivers/spi/spi-nuc900.c:484: error: 'THIS_MODULE' undeclared here (not in a function) drivers/spi/spi-nuc900.c:489: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-nuc900.c:489: warning: data definition has no type or storage class drivers/spi/spi-nuc900.c:489: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR' drivers/spi/spi-nuc900.c:489: warning: function declaration isn't a prototype drivers/spi/spi-nuc900.c:490: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-nuc900.c:490: warning: data definition has no type or storage class drivers/spi/spi-nuc900.c:490: warning: type defaults to 'int' in declaration of 'MODULE_DESCRIPTION' drivers/spi/spi-nuc900.c:490: warning: function declaration isn't a prototype drivers/spi/spi-nuc900.c:491: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-nuc900.c:491: warning: data definition has no type or storage class drivers/spi/spi-nuc900.c:491: warning: type defaults to 'int' in declaration of 'MODULE_LICENSE' drivers/spi/spi-nuc900.c:491: warning: function declaration isn't a prototype drivers/spi/spi-nuc900.c:492: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-nuc900.c:492: warning: data definition has no type or storage class drivers/spi/spi-nuc900.c:492: warning: type defaults to 'int' in declaration of 'MODULE_ALIAS' drivers/spi/spi-nuc900.c:492: warning: function declaration isn't a prototype make[2]: *** [drivers/spi/spi-nuc900.o] Error 1 make[1]: *** [drivers/spi] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-07spi/ath79: fix compile error due to missing includeGabor Juhos
Whithout including 'linux/module.h' spi-ath79 driver fails to compile with the these errors: drivers/spi/spi-ath79.c:273:12: error: 'THIS_MODULE' undeclared here (not in a function) drivers/spi/spi-ath79.c:278:20: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-ath79.c:278:1: warning: data definition has no type or storage class drivers/spi/spi-ath79.c:278:1: warning: type defaults to 'int' in declaration of 'MODULE_DESCRIPTION' drivers/spi/spi-ath79.c:278:20: warning: function declaration isn't a prototype drivers/spi/spi-ath79.c:279:15: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-ath79.c:279:1: warning: data definition has no type or storage class drivers/spi/spi-ath79.c:279:1: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR' drivers/spi/spi-ath79.c:279:15: warning: function declaration isn't a prototype drivers/spi/spi-ath79.c:280:16: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-ath79.c:280:1: warning: data definition has no type or storage class drivers/spi/spi-ath79.c:280:1: warning: type defaults to 'int' in declaration of 'MODULE_LICENSE' drivers/spi/spi-ath79.c:280:16: warning: function declaration isn't a prototype drivers/spi/spi-ath79.c:281:14: error: expected declaration specifiers or '...' before string constant drivers/spi/spi-ath79.c:281:1: warning: data definition has no type or storage class drivers/spi/spi-ath79.c:281:1: warning: type defaults to 'int' in declaration of 'MODULE_ALIAS' drivers/spi/spi-ath79.c:281:14: warning: function declaration isn't a prototype Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-01spi/pl022: make the chip deselect handling thread safeVirupax Sadashivpetimath
There is a possibility that the pump_message and giveback run in parallel on a SMP system. Both the pump_message and giveback threads work on the same SPI message queue. Results will be in correct if the pump_message gets to work on the queue first. when the pump_message works with the queue, it reads the head of the queue and removes it from the queue. pump_message activates the chip select depending on this message read. This leads to giveback working on the modified queue or a emptied queue. If the queue is empty or if the next message on the queue (which is not the actual next message, as the pump message has removed the next message from the queue) is not for the same SPI device as that Of the previous one, giveback will de-activate the chip select activated by pump_message(), which is wrong. To solve this problem pump_message is made not to run and access the queue until the giveback is done handling the queue. I.e. by making the cur_msg NULL after the giveback has read the queue. Also a state variable has been introduced to keep track of when the CS for next message is already activated and avoid to double-activate it. Reviewed-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-12-01spi/pl022: add support for pm_runtime autosuspendChris Blair
Adds support for configuring the spi bus to use autosuspend for runtime power management. This can reduce the latency in starting an spi transfer by not suspending the device immediately following completion of a transfer. If another transfer then takes place before the autosuspend timeout, the call to resume the device can return immediately rather than needing to risk sleeping in order to resume the device. Reviewed-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Chris Blair <chris.blair@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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