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2011-09-13locking, dma, ipu: Annotate bank_lock as rawUwe Kleine-König
The bank_lock can be taken in atomic context (irq handling) and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: kernel@pengutronix.de Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Dan Williams <dan.j.williams@intel.com> Link: http://lkml.kernel.org/r/1311949627-13260-1-git-send-email-u.kleine-koenig@pengutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-09-05dmaengine/ste_dma40: fix memory leak due to prepared descriptorsPer Forlin
Prepared descriptors that are not submitted will not be freed. Add prepared descriptor to a list to be able to release them upon dmaengine_terminate_all(). Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-09-05dmaengine/ste_dma40: fix Oops due to double free of client descriptorPer Forlin
The client list may exist in two lists at the same time. This makes free fail since the same desc is freed multiple times. Remove desc from client list when adding it to the pending queue. Move free of client owned descriptors from free_dma() to terminate_all(). Unable to handle kernel paging request at virtual address 00100104 pgd = dea8c000 [00100104] *pgd=1ea62831, *pte=00000000, *ppte=00000000 Internal error: Oops: 817 [#1] PREEMPT SMP Modules linked in: CPU: 0 Not tainted (3.1.0-rc3+ #58) PC is at d40_free_chan_resources+0x64/0x330 Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-09-05dmaengine/ste_dma40: remove duplicate call to d40_pool_lli_free().Per Forlin
d40_desc_free() already calls d40_pool_lli_free(). Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-09-05dmaengine/ste_dma40: add missing kernel doc for pending_queuePer Forlin
Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-08-11Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: drop experimental status for ARM_PATCH_PHYS_VIRT ARM: 7008/1: alignment: Make SIGBUS sent to userspace POSIXly correct ARM: 7007/1: alignment: Prevent ignoring of faults with ARMv6 unaligned access model ARM: 7010/1: mm: fix invalid loop for poison_init_mem ARM: 7005/1: freshen up mm/proc-arm946.S dmaengine: PL08x: Fix trivial build error ARM: Fix build error for SMP=n builds
2011-08-09dmaengine: PL08x: Fix trivial build errorRussell King
Something changed during the 3.1 merge window in the include files which now causes the pl08x DMA engine driver to fail to build. Fix this by adding the now necessary dma-mapping.h include: drivers/dma/amba-pl08x.c: In function ■pl08x_unmap_buffers■: drivers/dma/amba-pl08x.c:1524: error: implicit declaration of function ■dma_unmap_single■ drivers/dma/amba-pl08x.c:1527: error: implicit declaration of function ■dma_unmap_page■ Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-05Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dmaengine: use DEFINE_IDR for static initialization ioat: fix xor_idx_to_desc Avoid section type conflict in dma/ioat/dma_v3.c ioat: Adding PCI IDs for IOAT devices on SandyBridge platforms
2011-08-04dmaengine: use DEFINE_IDR for static initializationAxel Lin
We could use DEFINE_IDR for statically allocated idr that allow us to save a few lines of code. And also remove unneeded mutex_init() for dma_list_mutex, as dma_list_mutex is initialized automatically by DEFINE_MUTEX(). Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-08-04ioat: fix xor_idx_to_descDan Williams
For versions of the device that implement operation-types 0x87, 0x88 (IOAT_OP_XOR, IOAT_OP_XOR_VAL) this map determines whether a given source is located in the base or extended descriptor. Source addresses 6 through 8 require an extended descriptor, hence 0xe0, not 0xd0. No shipping hardware currently implements these operation types. Reported-by: Evgueni Smogailov <evgueni.smogailov@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-08-01Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits) Improve slave/cyclic DMA engine documentation dmaengine: pl08x: handle the rest of enums in pl08x_width DMA: PL08x: cleanup selection of burst size DMA: PL08x: avoid recalculating cctl at each prepare DMA: PL08x: cleanup selection of buswidth DMA: PL08x: constify plchan->cd and plat->slave_channels DMA: PL08x: separately store source/destination cctl DMA: PL08x: separately store source/destination slave address DMA: PL08x: clean up LLI debugging DMA: PL08x: select LLI bus only once per LLI setup DMA: PL08x: remove unused constants ARM: mxs-dma: reset after disable channel dma: intel_mid_dma: remove redundant pci_set_drvdata calls dma: mxs-dma: fix unterminated platform_device_id table dmaengine: pl330: make platform data optional dmaengine: imx-sdma: return proper error if kzalloc fails pch_dma: Fix CTL register access issue dmaengine: mxs-dma: skip request_irq for NO_IRQ dmaengine/coh901318: fix slave submission semantics dmaengine/ste_dma40: allow memory buswidth/burst to be configured ... Fix trivial whitespace conflict in drivers/dma/mv_xor.c
2011-08-01Merge branch 'sh-latest' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x * 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: (39 commits) SH: static should be at beginning of declaration sh: move CLKDEV_xxx_ID macro to sh_clk.h sh: clock-shx3: add CLKDEV_ICK_ID for cleanup sh: clock-sh7786: add CLKDEV_ICK_ID for cleanup sh: clock-sh7785: add CLKDEV_ICK_ID for cleanup sh: clock-sh7757: add CLKDEV_ICK_ID for cleanup sh: clock-sh7366: add CLKDEV_ICK_ID for cleanup sh: clock-sh7343: add CLKDEV_ICK_ID for cleanup sh: clock-sh7722: add CLKDEV_ICK_ID for cleanup sh: clock-sh7724: add CLKDEV_ICK_ID for cleanup sh: clock-sh7366: modify I2C clock settings sh: clock-sh7343: modify I2C clock settings sh: clock-sh7723: modify I2C clock settings sh: clock-sh7722: modify I2C clock settings sh: clock-sh7724: modify I2C clock settings serial: sh-sci: Fix up pretty name printing for port IRQs. serial: sh-sci: Kill off per-port enable/disable callbacks. serial: sh-sci: Add missing module description/author bits. serial: sh-sci: Regtype probing doesn't need to be fatal. sh: Tidy up pre-clkdev clk_get() error handling. ...
2011-07-27Merge branch 'next' into for-linus-3.0Vinod Koul
2011-07-27dmaengine: imx-sdma: add device tree probe supportShawn Guo
It adds device tree probe support for imx-sdma driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Vinod Koul <vinod.koul@intel.com>
2011-07-27dmaengine: imx-sdma: sdma_get_firmware does not need to copy fw_nameShawn Guo
It does not need to allocate space and copy fw_name in function sdma_get_firmware(). Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Vinod Koul <vinod.koul@intel.com>
2011-07-27dmaengine: imx-sdma: use platform_device_id to identify sdma versionShawn Guo
It might be not good to use software defined version to identify sdma device type, when hardware does not define such version. Instead, soc name is stable enough to define the device type. The patch uses platform_device_id rather than version number passed by platform data to identify sdma device type/version. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Vinod Koul <vinod.koul@intel.com>
2011-07-27Merge branch 'next/devel' of ↵Linus Torvalds
ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (128 commits) ARM: S5P64X0: External Interrupt Support ARM: EXYNOS4: Enable MFC on Samsung NURI ARM: EXYNOS4: Enable MFC on universal_c210 ARM: S5PV210: Enable MFC on Goni ARM: S5P: Add support for MFC device ARM: EXYNOS4: Add support FIMD on SMDKC210 ARM: EXYNOS4: Add platform device and helper functions for FIMD ARM: EXYNOS4: Add resource definition for FIMD ARM: EXYNOS4: Change devname for FIMD clkdev ARM: SAMSUNG: Add IRQ_I2S0 definition ARM: SAMSUNG: Add platform device for idma ARM: EXYNOS4: Add more registers to be saved and restored for PM ARM: EXYNOS4: Add more register addresses of CMU ARM: EXYNOS4: Add platform device for dwmci driver ARM: EXYNOS4: configure rtc-s3c on NURI ARM: EXYNOS4: configure MAX8903 secondary charger on NURI ARM: EXYNOS4: configure ADC on NURI ARM: EXYNOS4: configure MAX17042 fuel gauge on NURI ARM: EXYNOS4: configure regulators and PMIC(MAX8997) on NURI ARM: EXYNOS4: Increase NR_IRQS for devices with more IRQs ... Fix up tons of silly conflicts: - arch/arm/mach-davinci/include/mach/psc.h - arch/arm/mach-exynos4/Kconfig - arch/arm/mach-exynos4/mach-smdkc210.c - arch/arm/mach-exynos4/pm.c - arch/arm/mach-imx/mm-imx1.c - arch/arm/mach-imx/mm-imx21.c - arch/arm/mach-imx/mm-imx25.c - arch/arm/mach-imx/mm-imx27.c - arch/arm/mach-imx/mm-imx31.c - arch/arm/mach-imx/mm-imx35.c - arch/arm/mach-mx5/mm.c - arch/arm/mach-s5pv210/mach-goni.c - arch/arm/mm/Kconfig
2011-07-26dmaengine: pl08x: handle the rest of enums in pl08x_widthVinod Koul
pl08x_width function does not handle rest of enums for DMA_SLAVE_BUSWIDTH_xxxx which causes gcc to emit below warining drivers/dma/amba-pl08x.c: In function 'pl08x_width': drivers/dma/amba-pl08x.c:1119: warning: enumeration value 'DMA_SLAVE_BUSWIDTH_UNDEFINED' not handled in switch drivers/dma/amba-pl08x.c:1119: warning: enumeration value 'DMA_SLAVE_BUSWIDTH_8_BYTES' not handled in switch this patch adds a default case which returns error Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: cleanup selection of burst sizeRussell King - ARM Linux
Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: avoid recalculating cctl at each prepareRussell King - ARM Linux
Now that we have separate cctl values for M>P and P>M transfers, we can avoid calculating the cctl value each time we prepare a transaction. Move the bus selection and increment setting to the slave configuration and initialization functions. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: cleanup selection of buswidthRussell King - ARM Linux
Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: separately store source/destination cctlRussell King - ARM Linux
Store the source/destination cctl values into the channel structure. This moves us towards being able to avoid a configuration call each time we use the channel. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: separately store source/destination slave addressRussell King - ARM Linux
Store the source/destination slave address separately into the channel structure. This moves us towards being able to avoid a configuration call each time we use the channel. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: clean up LLI debuggingRussell King - ARM Linux
Clean up debugging when setting up the LLI list. This reduces the amount of output while preserving the information, and makes it easier to read. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: select LLI bus only once per LLI setupRussell King - ARM Linux
Avoid re-selecting the LLI bus each time we create an LLI. Move it out of the LLI setup loops. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26DMA: PL08x: remove unused constantsRussell King - ARM Linux
PL08X_WQ_PERIODMIN and PL08X_MAX_ALLOCS are not used, remove them. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26ARM: mxs-dma: reset after disable channelDong Aisheng
We met some channels in abnormal state after disable. Reset it to get a clean state. Signed-off-by: Dong Aisheng <b29396@freescale.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26dma: intel_mid_dma: remove redundant pci_set_drvdata callsAxel Lin
Call pci_set_drvdata() once in intel_mid_dma_probe() is enough. Remove redundant pci_set_drvdata() calls in dma_suspend() and dma_resume(). Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26dma: mxs-dma: fix unterminated platform_device_id tableAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-26dmaengine: pl330: make platform data optionalRob Herring
The pl330 needs platform data for describing peripheral connections, but some platforms may only support memory to memory dma channels. In this case, we can probe for how many channels there are and don't need the platform data. As memcpy requests don't need channel private data to hold peripheral info, allow private data to be NULL in this case. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Vinod Koul <vkoul@infradead.org> Cc: Dan Williams <dan.j.williams@intel.com> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-25Merge 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: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
2011-07-25Merge branch 'next/fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (35 commits) ARM: msm: platsmp: determine number of CPU cores at boot time ARM: Tegra: Seaboard: Fix I2C bus numbering for ADT7461 ARM: Tegra: Trimslice: Tri-state DAP3 pinmux ARM: orion5x: fixup 5181 MPP mask check ARM: mxs-dma: include <linux/dmaengine.h> ARM: i.MX53: consistently use MX53_UART_PAD_CTRL for uart txd/rxd/rts/cts ARM: i.MX53: UARTn_CTS pin should not change RTS input select ARM: i.MX53: UARTn_TXD pin should not change RXD input select ARM: mx25: Fix typo on CAN1_RX pad setting iomux-mx53: add missing 'IOMUX_CONFIG_SION' for some I2C pad definitions ARM: NUC93X: add UL suffix to VMALLOC_END to ensure it is properly typed ARM: LPC32XXX: add UL suffix to VMALLOC_END to ensure it is properly typed ARM: CNS3XXX: add UL suffix to VMALLOC_END to ensure it is properly typed ARM: i.MX53: Fix IOMUX type o's ARM i.MX dma: Fix burstsize settings mach-mx5: fix the I2C clock parents ARM: mxs/tx28: according to the TX28's datasheet D4-D7 are not used for MMC0 ARM i.MX23/28: platform-mxsfb: Add missing include of linux/dma-mapping.h ARM: mx53: Fix some interrupts marked as reserved. MXC: iomux-v3: correct NO_PAD_CTRL definition ... Fix up trivial conflict in arch/arm/mach-imx/mach-mx31_3ds.c
2011-07-25dmaengine: imx-sdma: return proper error if kzalloc failsAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-25pch_dma: Fix CTL register access issueTomoya MORINAGA
Currently, Mode-Control register is accessed by read-modify-write. According to DMA hardware specifications datasheet, prohibits this method. Because this register resets to 0 by DMA HW after DMA transfer completes. Thus, current read-modify-write processing can cause unexpected behavior. The datasheet says in case of writing Mode-Control register, set the value for only target channel, the others must set '11b'. e.g. Set DMA0=01b DMA11=10b CTL0=33333331h CTL2=00002333h NOTE: CTL0 includes DMA0~7 Mode-Control register. CTL2 includes DMA8~11 Mode-Control register. This patch modifies the issue. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-22Merge branch 'spi/next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'spi/next' of git://git.secretlab.ca/git/linux-2.6: (34 commits) spi/imx: add device tree probe support spi/imx: copy gpio number passed by platform data into driver private data spi/imx: use soc name in spi device type naming scheme spi/imx: merge type SPI_IMX_VER_0_7 into SPI_IMX_VER_0_4 spi/imx: do not use spi_imx2_3 to name SPI_IMX_VER_2_3 function and macro spi/imx: use mx21 to name SPI_IMX_VER_0_0 function and macro spi/imx: do not make copy of spi_imx_devtype_data spi/dw: Add spi number into spi irq desc spi/tegra: Use engineering names in DT compatible property spi/fsl_spi: fix CPM spi driver mach-s3c2410: remove unused spi-gpio.h file spi: remove obsolete spi-s3c24xx-gpio driver mach-gta2: remove unused spi-gpio.h include mach-qt2410: convert to spi_gpio mach-jive: convert to spi_gpio spi/pxa2xx: Remove unavailable ssp_type from documentation spi/bfin_spi: uninline fat queue funcs spi/bfin_spi: constify pin array spi/bfin_spi: use structs for accessing hardware regs spi/topcliff-pch: Support new device ML7223 IOH ... Fix up trivial conflict in arch/arm/mach-ep93xx/Makefile
2011-07-22Avoid section type conflict in dma/ioat/dma_v3.cAndi Kleen
const __read_mostly is not legal and causes section type conflicts. That's because the read.mostly section is not read only. Simply drop the __read_mostly designation. Signed-off-by: Andi Kleen <ak@linux.intel.com> [drop __read_mostly instead of const] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-22ioat: Adding PCI IDs for IOAT devices on SandyBridge platformsDave Jiang
Adding to pci_id.h and the device table for ioat. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-13dmaengine: mxs-dma: skip request_irq for NO_IRQShawn Guo
In general, the mxs-dma users get separate irq for each channel, but gpmi is special one which has only one irq shared by all gpmi channels. It causes mxs_dma channel allocation function fail for all other gpmi channels except the first one calling into the function. The patch gets request_irq call skipped for NO_IRQ case, and leaves this gpmi specific quirk to gpmi driver to sort out. It will fix above problem if gpmi driver sets chan_irq as gpmi irq for only one channel and NO_IRQ for all the rest channels. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/coh901318: fix slave submission semanticsLinus Walleij
While testing Per Forlins MMC speed improvements I noticed a semantic bug in the COH901318 driver: it will write to channel registers in the prep_slave_sg() function, instead of deferring it to later, breaking the assumption from the drivers to be able to queue up new jobs while another job is running. Fix this by storing up the initial register writes in the job descriptors and write them to hardware when we process the descriptor instead. Now the stress tests work. Acked-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/ste_dma40: allow memory buswidth/burst to be configuredRabin Vincent
Currently the runtime config implementation forces the memory side parameters to be the same as the peripheral side. Allow these to be different, and check for misconfiguration. Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com> Tested-by: Stefan Nilsson <stefan.xk.nilsson@stericsson.com> Reviewed-by: Per Forlin <per.forlin@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Robert Marklund <robert.marklund@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/ste_dma40: use AMBA PrimeCell helper macrosLinus Walleij
The DMA40 is not a PrimeCell from ARM, but it still use the same ID registers. So let's utilize the existing macros in the PrimeCell header to identify manufacturer and revision of the IP block instead of reinventing the wheel. Cc: Robert Marklund <robert.marklund@stericsson.com> Cc: Per Forlin <per.forlin@linaro.org> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/ste_dma40: make the cyclic alloc NOWAITRobert Marklund
This function may be initiated from IRQ context, so the allocation must allocate NOWAIT memory. Signed-off-by: Robert Marklund <robert.marklund@stericsson.com> Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Philippe Langlais <philippe.langlais@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/ste_dma40: fix missing kernel-docom prakash
Missing documentation creates kernel-doc warnings, so add the documenation. Signed-off-by: Om Prakash <omprakash.pal@stericsson.com> Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine: remove ste_dma40 from issue_pending TODOPer Forlin
ste_dma40 now implements issue_pending according to documentation. Submit adds descriptos to a pending queue with are flushed down to the DMAC at issue_pending. Signed-off-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dmaengine/ste_dma40: add a separate queue for pending requestsPer Forlin
tx_submit will add descriptors to the pending queue. Issue pending will then move the pending descriptors to the transfer queue. Signed-off-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13pch_dma: Fix channel lockingAlexander Stein
Fix for the following INFO message ================================= [ INFO: inconsistent lock state ] 2.6.39+ #89 --------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. rs232/822 [HC1[1]:SC0[0]:HE0:SE1] takes: (&(&pd_chan->lock)->rlock){?.....}, at: [<c123b9a1>] pdc_desc_get+0x16/0xab {HARDIRQ-ON-W} state was registered at: [<c104fe28>] mark_irqflags+0xbd/0x11a [<c1050386>] __lock_acquire+0x501/0x6bb [<c1050945>] lock_acquire+0x63/0x7b [<c131c51d>] _raw_spin_lock_bh+0x43/0x51 [<c123bee4>] pd_alloc_chan_resources+0x92/0x11e [<c123ad62>] dma_chan_get+0x9b/0x107 [<c123b2d1>] __dma_request_channel+0x61/0xdc [<c11ba24b>] pch_request_dma+0x61/0x19e [<c11bb3b8>] pch_uart_startup+0x16a/0x1a2 [<c11b8446>] uart_startup+0x87/0x147 [<c11b9183>] uart_open+0x117/0x13e [<c11a5c7d>] tty_open+0x23c/0x34c [<c1097705>] chrdev_open+0x140/0x15f [<c10930a6>] __dentry_open.clone.14+0x14a/0x22b [<c1093dfb>] nameidata_to_filp+0x36/0x40 [<c109f28b>] do_last+0x513/0x635 [<c109f4af>] path_openat+0x9c/0x2aa [<c109f6e4>] do_filp_open+0x27/0x69 [<c1093f02>] do_sys_open+0xfd/0x184 [<c1093fad>] sys_open+0x24/0x2a [<c131d58c>] sysenter_do_call+0x12/0x32 irq event stamp: 2522 hardirqs last enabled at (2521): [<c131ca3b>] _raw_spin_unlock_irqrestore+0x36/0x52 hardirqs last disabled at (2522): [<c131db27>] common_interrupt+0x27/0x34 softirqs last enabled at (2354): [<c102fa11>] __do_softirq+0x10a/0x11a softirqs last disabled at (2299): [<c10041a4>] do_softirq+0x57/0xa4 other info that might help us debug this: 2 locks held by rs232/822: #0: (&tty->atomic_write_lock){+.+.+.}, at: [<c11a4b7a>] tty_write_lock+0x14/0x3c #1: (&port_lock_key){-.....}, at: [<c11bad72>] pch_uart_interrupt+0x17/0x1e9 stack backtrace: Pid: 822, comm: rs232 Not tainted 2.6.39+ #89 Call Trace: [<c1319f90>] ? printk+0x19/0x1b [<c104f893>] print_usage_bug+0x184/0x18f [<c104e5b1>] ? print_irq_inversion_bug+0x10e/0x10e [<c104f943>] mark_lock_irq+0xa5/0x1f6 [<c104fc9c>] mark_lock+0x208/0x2d7 [<c104fdc0>] mark_irqflags+0x55/0x11a [<c1050386>] __lock_acquire+0x501/0x6bb [<c10042ee>] ? dump_trace+0x92/0xb6 [<c1050945>] lock_acquire+0x63/0x7b [<c123b9a1>] ? pdc_desc_get+0x16/0xab [<c131c2d0>] _raw_spin_lock+0x3e/0x4c [<c123b9a1>] ? pdc_desc_get+0x16/0xab [<c123b9a1>] pdc_desc_get+0x16/0xab [<c10504d8>] ? __lock_acquire+0x653/0x6bb [<c123bb2c>] pd_prep_slave_sg+0x7c/0x1cb [<c1006c3f>] ? nommu_map_sg+0x6e/0x81 [<c11bace6>] dma_handle_tx+0x2cf/0x344 [<c11bad72>] ? pch_uart_interrupt+0x17/0x1e9 [<c11baebb>] pch_uart_interrupt+0x160/0x1e9 [<c10642fb>] handle_irq_event_percpu+0x25/0x127 [<c1064429>] handle_irq_event+0x2c/0x43 [<c1065e0d>] ? handle_fasteoi_irq+0x84/0x84 [<c1065eb9>] handle_edge_irq+0xac/0xce <IRQ> [<c1003ecb>] ? do_IRQ+0x38/0x9d [<c131db2e>] ? common_interrupt+0x2e/0x34 [<c105007b>] ? __lock_acquire+0x1f6/0x6bb [<c131ca3d>] ? _raw_spin_unlock_irqrestore+0x38/0x52 [<c11b798b>] ? uart_start+0x2d/0x32 [<c11b7998>] ? uart_flush_chars+0x8/0xa [<c11a7962>] ? n_tty_write+0x12c/0x1c6 [<c1027a73>] ? try_to_wake_up+0x251/0x251 [<c11a4d0b>] ? tty_write+0x169/0x1dc [<c11a7836>] ? n_tty_ioctl+0xb7/0xb7 [<c1094841>] ? vfs_write+0x91/0x10d [<c11a4ba2>] ? tty_write_lock+0x3c/0x3c [<c1094a69>] ? sys_write+0x3e/0x63 [<c131d58c>] ? sysenter_do_call+0x12/0x32 Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Tested-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-13dma: mv_xor: use resource_size()H Hartley Sweeten
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Dan Williams <dan.j.williams@intel.com> (supporter:ASYNCHRONOUS TRAN...) Cc: Vinod Koul <vinod.koul@intel.com> (supporter:DMA GENERIC OFFLO...) Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-07-11Merge branch 'master' into for-nextJiri Kosina
Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
2011-07-07dmaengine: imx-sdma: pass sdma firmware name via platform dataShawn Guo
It is not good to have cpu_name and to_version encoded into sdma firmware name as variables. For example, there are three TOs of imx51 soc, the sdma script never changes since TO1, which means all three TOs of imx51 uses TO1 version of sdma script. But we have to prepare three identical firmwares, sdma-imx51-to1.bin sdma-imx51-to2.bin and sdma-imx51-to3.bin, to have the kernel capable of running on all three TOs. The patch removes cpu_name and to_version from sdma platform data, and instead uses fw_name to pass the firmware name, so that we can pass the TO version where it's relevant and skip it where only one firmware exists. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-07ARM i.MX dma: Fix burstsize settingsSascha Hauer
dmaengine expects the maxburst parameter in words, not bytes. The imxdma driver and its users do this wrong. Fix this. As a side note the imx-pcm-dma-mx2 driver was 'fixed' to work with imx-dma. This broke the driver with imx-sdma support which correctly takes the maxburst parameter in words. This patch puts the sdma based sound back to work. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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