aboutsummaryrefslogtreecommitdiffstats
path: root/arch/avr32/mach-at32ap
Commit message (Collapse)AuthorAge
* [ARM] 5400/1: Add support for inverted rdy_busy pin for Atmel nand device ↵Gregory CLEMENT2009-02-16
| | | | | | | | | | | | controller Add support for inverted rdy_busy pin for Atmel nand device controller It will fix building error on NeoCore926 board. Acked-by: Andrew Victor <linux@maxim.org.za> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Gregory CLEMENT <gclement@adeneo.adetelgroup.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'next' of ↵Linus Torvalds2009-01-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (22 commits) ioat: fix self test for multi-channel case dmaengine: bump initcall level to arch_initcall dmaengine: advertise all channels on a device to dma_filter_fn dmaengine: use idr for registering dma device numbers dmaengine: add a release for dma class devices and dependent infrastructure ioat: do not perform removal actions at shutdown iop-adma: enable module removal iop-adma: kill debug BUG_ON iop-adma: let devm do its job, don't duplicate free dmaengine: kill enum dma_state_client dmaengine: remove 'bigref' infrastructure dmaengine: kill struct dma_client and supporting infrastructure dmaengine: replace dma_async_client_register with dmaengine_get atmel-mci: convert to dma_request_channel and down-level dma_slave dmatest: convert to dma_request_channel dmaengine: introduce dma_request_channel and private channels net_dma: convert to dma_find_channel dmaengine: provide a common 'issue_pending_all' implementation dmaengine: centralize channel allocation, introduce dma_find_channel dmaengine: up-level reference counting to the module level ...
| * atmel-mci: convert to dma_request_channel and down-level dma_slaveDan Williams2009-01-06
| | | | | | | | | | | | | | | | | | | | | | dma_request_channel provides an exclusive channel, so we no longer need to pass slave data through dmaengine. Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | Merge branch 'move-atmel-mci-h' into boardsHaavard Skinnemoen2009-01-05
|\ \
| * | atmel-mci: move atmel-mci.h file to include/linuxNicolas Ferre2009-01-05
| |/ | | | | | | | | | | | | | | Needed to use the atmel-mci driver in an architecture independant maner. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Hammerhead board supportAlex Raimondi2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Hammerhead platform is built around a AVR32 32-bit microcontroller from Atmel. It offers versatile peripherals, such as ethernet, usb device, usb host etc. The board also incooperates a power supply and is a Power over Ethernet (PoE) Powered Device (PD). Additonally, a Cyclone III FPGA from Altera is integrated on the board. The FPGA is mapped into the 32-bit AVR memory bus. The FPGA offers two DDR2 SDRAM interfaces, which will cover even the most exceptional need of memory bandwidth. Together with the onboard video decoder the board is ready for video processing. This patch does include the basic support for the fpga device driver, but not the device driver itself. Signed-off-by: Alex Raimondi <mailinglist@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | Merge branch 'cleanups' into boardsHaavard Skinnemoen2009-01-05
|\ \ | |/ |/|
| * avr32: Allow reserving multiple pins at onceAlex Raimondi2009-01-05
| | | | | | | | | | | | | | | | | | | | | | at32_reserve_pin now takes an u32 bitmask rather than a single pin. This allows to reserve multiple pins at once. Remove (undocumented) SDCS (pin PE26) from reservation in board setup code. Signed-off-by: Alex Raimondi <raimondi@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
| * avr: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (I did not compile or test it, please let me know, or help fixing it, if something is wrong with the conversion) This patch is part of a larger patch series which will remove the "char bus_id[20]" name string from struct device. The device name is managed in the kobject anyway, and without any size limitation, and just needlessly copied into "struct device". To set and read the device name dev_name(dev) and dev_set_name(dev) must be used. If your code uses static kobjects, which it shouldn't do, "const char *init_name" can be used to statically provide the name the registered device should have. At registration time, the init_name field is cleared, to enforce the use of dev_name(dev) to access the device name at a later time. We need to get rid of all occurrences of bus_id in the entire tree to be able to enable the new interface. Please apply this patch, and possibly convert any remaining remaining occurrences of bus_id. We want to submit a patch to -next, which will remove bus_id from "struct device", to find the remaining pieces to convert, and finally switch over to the new api, which will remove the 20 bytes array and does no longer have a size limitation. Thanks, Kay From: Kay Sievers <kay.sievers@vrfy.org> Subject: avr: struct device - replace bus_id with dev_name(), dev_set_name() Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Enable pullup on USART TX linesAnders Blomdell2008-10-24
|/ | | | | | | | | | Make USART initialization conform to Section 24.6.1 in the AT32AP7000 manual, i.e. "To prevent the TXD line from falling when the USART is disabled, the use of an internal pull up is mandatory." Signed-off-by: Anders Blomdell <anders.blomdell@control.lth.se> [haavard.skinnemoen@atmel.com: enable pullup on RX as well] Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* Merge branches 'boards' and 'fixes' of ↵Haavard Skinnemoen2008-10-23
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
| * avr32: Fix GPIO initcall breakageHaavard Skinnemoen2008-10-23
| | | | | | | | | | | | | | | | | | | | Add essential system devices, including GPIO controllers, automatically at core_initcall time. This ensures that the devices are there when the PIO driver gets initialized at postcore_initcall, fixing a bug exposed by commit d6634db8fe1784d0a8e4e156970fec034708446e "avr32: Use platform_driver_probe for pio platform driver". Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
| * avr32: Scale loops_per_jiffy when cpu frequency changesHaavard Skinnemoen2008-10-23
| | | | | | | | | | | | | | | | The loops_per_jiffy variable isn't updated when cpufreq changes the CPU frequency. This could cause udelay() and friends to produce wrong delays. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
| * avr32: Fix bug in LCD pin setup on port CAlex Raimondi2008-10-23
| | | | | | | | | | | | | | Bug was introduced with the new at32_select_periph function. Signed-off-by: Alex Raimondi <mailinglist@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
| * Merge branch 'genirq-v28-for-linus' of ↵Linus Torvalds2008-10-20
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu and x86/uv. The sparseirq branch is just preliminary groundwork: no sparse IRQs are actually implemented by this tree anymore - just the new APIs are added while keeping the old way intact as well (the new APIs map 1:1 to irq_desc[]). The 'real' sparse IRQ support will then be a relatively small patch ontop of this - with a v2.6.29 merge target. * 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits) genirq: improve include files intr_remapping: fix typo io_apic: make irq_mis_count available on 64-bit too genirq: fix name space collisions of nr_irqs in arch/* genirq: fix name space collision of nr_irqs in autoprobe.c genirq: use iterators for irq_desc loops proc: fixup irq iterator genirq: add reverse iterator for irq_desc x86: move ack_bad_irq() to irq.c x86: unify show_interrupts() and proc helpers x86: cleanup show_interrupts genirq: cleanup the sparseirq modifications genirq: remove artifacts from sparseirq removal genirq: revert dynarray genirq: remove irq_to_desc_alloc genirq: remove sparse irq code genirq: use inline function for irq_to_desc genirq: consolidate nr_irqs and for_each_irq_desc() x86: remove sparse irq from Kconfig genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n ...
| | * genirq: fix name space collisions of nr_irqs in arch/*Thomas Gleixner2008-10-16
| | | | | | | | | | | | | | | | | | local shadows of global variables are _bad_ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | cpufreq: remove policy->governor setting in drivers initializationDominik Brodowski2008-10-15
| |/ | | | | | | | | | | | | | | | | | | | | | | As policy->governor is already set to CPUFREQ_DEFAULT_GOVERNOR in the (always built-in) cpufreq core, we do not need to set it in the drivers. This fixes the sparc64 allmodconfig build failure. Also, remove a totally useles setting of ->policy in cpufreq-pxa3xx.c. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* / avr32: Fix MIMC200 board use of SPD network pinsMark Jackson2008-10-13
|/ | | | | | | | | | | | | | The MIMC200 board uses the SPD output pin from the Ethernet MACs for other purposes. One of these is as a board-reset, so I've had to #define off the SPD output pin declaration. This is probably not the best way of achieving this, but works in the current framework. Signed-off-by: Mark Jackson <mpfj@mimc.co.uk> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Allow selecting multiple pins at onceJulien May2008-10-12
| | | | | | | | at32_select_periph() now takes an u32 bitmask rather than a single pin. This allows to set multiple pins at once. Signed-off-by: Alex Raimondi <mailinglist@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* Merge branch 'master' of ↵Haavard Skinnemoen2008-10-12
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/atmel-mci-2.6.28
| * atmel-mci: Add experimental DMA supportHaavard Skinnemoen2008-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for DMA transfers through the generic DMA engine framework with the DMA slave extensions. The driver has been tested using mmc-block and ext3fs on several SD, SDHC and MMC+ cards. Reads and writes work fine, with read transfer rates up to 7.5 MiB/s on fast cards with debugging disabled. Unfortunately, the driver has been known to lock up from time to time with DMA enabled, so DMA support is currently optional and marked EXPERIMENTAL. However, I didn't see any problems while testing 13 different cards (MMC, SD and SDHC of different brands and sizes), so I suspect the "Initialize BLKR before sending data transfer command" fix that was posted earlier fixed this as well. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
| * atmel-mci: Platform code for supporting multiple mmc slotsHaavard Skinnemoen2008-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the necessary platform infrastructure to support multiple mmc/sdcard slots all at once through a single controller. Currently, the driver will use the first valid slot it finds and stick with that, but later patches will add support for switching between several slots on the fly. Extend the platform data structure with per-slot information: MMC/SDcard bus width and card detect/write protect pins. This will affect the pin muxing as well as the capabilities announced to the mmc core. Note that board code is now required to supply a mci_platform_data struct to at32_add_device_mci(). Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Replace static clock list with dynamic linked listAlex Raimondi2008-10-05
| | | | | | | | | | | | | | | | This replaces the at32_clock_list array with a linked list. Clocks can now be registered (added) to the list. Signed-off-by: Alex Raimondi <raimondi@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Use platform_driver_probe for pdc platform driverUwe Kleine-König2008-09-22
| | | | | | | | | | | | | | | | | | | | | | The probe function of the pdc platform driver lives in the init section and so a pdc device that is created after the init section is discarded probably results in an oops. Even if this cannot happen, using platform_driver_probe is cleaner. (If this can happen and should be supported the probe function must live in the devinit section instead.) Signed-off-by: Uwe Kleine-König <ukleinek@strlen.de> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Use platform_driver_probe for pio platform driverUwe Kleine-König2008-09-22
| | | | | | | | | | | | | | | | | | | | | | The probe function of the pio platform driver lives in the init section and so a pio device that is created after the init section is discarded probably results in an oops. Even if this cannot happen, using platform_driver_probe is cleaner. (If this can happen and should be supported the probe function must live in the devinit section instead.) Signed-off-by: Uwe Kleine-König <ukleinek@strlen.de> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Provide a way to deselect pins in the portmuxHaavard Skinnemoen2008-09-22
| | | | | | | | | | | | | | | | | | | | | | | | Currently, setting up the portmux is completely one-shot: Once a pin is muxed, the portmux driver will complain loudly and refuse to do anything if you try to set up the same pin again. Sometimes, it may be necessary to change the configuration of a pin after it has been set up initially. This patch adds a way to undo the previous configuration, allowing the pin to be reconfigured. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: Allow fine-grained control over LCDC pinsJulien May2008-09-22
| | | | | | | | | | | | | | | | | | | | This replaces the pin_config param with an u64 pin_mask in at32_add_device_lcdc, allowing a board-maintainer to indivually select specific lcdc pins. Signed-off-by: Alex Raimondi <raimondi@miromico.ch> Signed-off-by: Julien May <jmay@miromico.ch> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | avr32: use the new byteorder headersHarvey Harrison2008-09-22
|/ | | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> [haavard.skinnemoen@atmel.com: fix <mach/io.h> build breakage] Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: pm_standby low-power ram bug fixHumphrey Bucknell2008-09-01
| | | | | | | | | | | | The value stored into the SDRAMC LPR register should be the current value of the register with the Self-refresh value set in the lower bit field. The bug involved only the Self-refresh value being written to the register, thus over writing any low-power ram settings. Signed-off-by: Humphrey Bucknell <hbucknell@saitek.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Clean up HMATRIX codeHaavard Skinnemoen2008-08-08
| | | | | | | | | | | Introduce a few helper functions for HMATRIX configuration and clean up the register definitions. Also add definitions for the HMATRIX master and slave IDs on the AT32AP700x chips. Also make the definitions in hmatrix.h available to board code by moving it to <mach/hmatrix.h> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Add MMIO address definitions for certain controllersHaavard Skinnemoen2008-08-08
| | | | | | | | Hardcoded MMIO base addresses are used a few places throughout the platform code. Move these into the chip-specific header file so that adding support for new chips becomes a bit easier. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Introduce <mach/chip.h>Haavard Skinnemoen2008-08-08
| | | | | | | | | This file includes the appropriate chip-specific header with MMIO, IRQ and GPIO definitions used by the platform code. It may also be used to provide inline GPIO accessors for drivers that are willing to sacrifice portability for faster bitbanging. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>Haavard Skinnemoen2008-08-05
| | | | | | | Update all avr32-specific files to use the new platform-specific header locations. Drivers shared with ARM are left alone for now. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Introduce arch/avr32/mach-*/include/machHaavard Skinnemoen2008-08-05
| | | | | | | | Add arch/avr32/mach-*/include to include search path and copy all the files from include/asm/arch there. The old files will be removed once ARM does the same change and all common drivers are converted. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: some mmc/sd cleanupsDavid Brownell2008-07-27
| | | | | | | | | | | | | | | | | | | | Minor cleanups for the MMC/SD support on avr32: - Make at32_add_device_mci() properly initialize "missing" platform data ... so boards like STK1002 won't try GPIO 0. - Switch over to gpio_is_valid() instead of testing for only one designated value. - Provide STK1002 platform data for the unlikely case that switches are set so first Ethernet controller isn't in use. (That's the only way to get card detect and writeprotect switch sensing on the STK1000.) And get rid of one "unused variable" warning. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* Merge commit 'upstream/master'Haavard Skinnemoen2008-07-27
|\
| * Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-07-26
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (57 commits) [MTD] [NAND] subpage read feature as a way to increase performance. CPUFREQ: S3C24XX NAND driver frequency scaling support. [MTD][NAND] au1550nd: remove unused variable [MTD] jedec_probe: Fix SST 16-bit chip detection [MTD][MTDPART] Fix a division by zero bug [MTD][MTDPART] Cleanup and document the erase region handling [MTD][MTDPART] Handle most checkpatch findings [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partition [MTD] physmap: resume already suspended chips on failure to suspend [MTD] physmap: Fix suspend/resume/shutdown bugs. [MTD] [NOR] Fix -ETIMEO errors in CFI driver [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=y [JFFS2] Use .unlocked_ioctl [MTD] Fix const assignment in the MTD command line partitioning driver [MTD] [NOR] gen_probe: No debug message when debugging is disabled [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip drivers [MTD] [MAPS] Remove the bast-flash driver. [MTD] [NAND] fsl_elbc_nand: ecclayout cleanups [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBT [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chips ...
| | * Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6David Woodhouse2008-07-25
| | |\
| | * \ Merge branch 'master' of ↵David Woodhouse2008-07-11
| | |\ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| | * | | [MTD] [NAND] avr32: atmel_nand platform code for AT32AP700xHåvard Skinnemoen2008-06-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function initializes and adds a platform_device for a NAND flash interface on SMC chip select 3. Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| | * | | avr32: move hsmc_init() to core_initcallHåvard Skinnemoen2008-06-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The board init code, typically running from postcore_initcall, may need to set up SMC timings. We have to make sure the SMC driver is ready before this happens. Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * | | | gpio: sysfs interfaceDavid Brownell2008-07-25
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a simple sysfs interface for GPIOs. /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel /gpioN ... for each exported GPIO #N /value ... always readable, writes fail for input GPIOs /direction ... r/w as: in, out (default low); write high, low /gpiochipN ... for each gpiochip; #N is its first GPIO /base ... (r/o) same as N /label ... (r/o) descriptive, not necessarily unique /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1) GPIOs claimed by kernel code may be exported by its owner using a new gpio_export() call, which should be most useful for driver debugging. Such exports may optionally be done without a "direction" attribute. Userspace may ask to take over a GPIO by writing to a sysfs control file, helping to cope with incomplete board support or other "one-off" requirements that don't merit full kernel support: echo 23 > /sys/class/gpio/export ... will gpio_request(23, "sysfs") and gpio_export(23); use /sys/class/gpio/gpio-23/direction to (re)configure it, when that GPIO can be used as both input and output. echo 23 > /sys/class/gpio/unexport ... will gpio_free(23), when it was exported as above The extra D-space footprint is a few hundred bytes, except for the sysfs resources associated with each exported GPIO. The additional I-space footprint is about two thirds of the current size of gpiolib (!). Since no /dev node creation is involved, no "udev" support is needed. Related changes: * This adds a device pointer to "struct gpio_chip". When GPIO providers initialize that, sysfs gpio class devices become children of that device instead of being "virtual" devices. * The (few) gpio_chip providers which have such a device node have been updated. * Some gpio_chip drivers also needed to update their module "owner" field ... for which missing kerneldoc was added. * Some gpio_chips don't support input GPIOs. Those GPIOs are now flagged appropriately when the chip is registered. Based on previous patches, and discussion both on and off LKML. A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this merges to mainline. [akpm@linux-foundation.org: a few maintenance build fixes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | Merge branch 'for-linus' of ↵Linus Torvalds2008-07-23
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (24 commits) I/OAT: I/OAT version 3.0 support I/OAT: tcp_dma_copybreak default value dependent on I/OAT version I/OAT: Add watchdog/reset functionality to ioatdma iop_adma: cleanup iop_chan_xor_slot_count iop_adma: document how to calculate the minimum descriptor pool size iop_adma: directly reclaim descriptors on allocation failure async_tx: make async_tx_test_ack a boolean routine async_tx: remove depend_tx from async_tx_sync_epilog async_tx: export async_tx_quiesce async_tx: fix handling of the "out of descriptor" condition in async_xor async_tx: ensure the xor destination buffer remains dma-mapped async_tx: list_for_each_entry_rcu() cleanup dmaengine: Driver for the Synopsys DesignWare DMA controller dmaengine: Add slave DMA interface dmaengine: add DMA_COMPL_SKIP_{SRC,DEST}_UNMAP flags to control dma unmap dmaengine: Add dma_client parameter to device_alloc_chan_resources dmatest: Simple DMA memcpy test client dmaengine: DMA engine driver for Marvell XOR engine iop-adma: fix platform driver hotplug/coldplug dmaengine: track the number of clients using a channel ... Fixed up conflict in drivers/dca/dca-sysfs.c manually
| | * | | dmaengine: Driver for the Synopsys DesignWare DMA controllerHaavard Skinnemoen2008-07-08
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a driver for the Synopsys DesignWare DMA controller (aka DMACA on AVR32 systems.) This DMA controller can be found integrated on the AT32AP7000 chip and is primarily meant for peripheral DMA transfer, but can also be used for memory-to-memory transfers. This patch is based on a driver from David Brownell which was based on an older version of the DMA Engine framework. It also implements the proposed extensions to the DMA Engine API for slave DMA operations. The dmatest client shows no problems, but there may still be room for improvement performance-wise. DMA slave transfer performance is definitely "good enough"; reading 100 MiB from an SD card running at ~20 MHz yields ~7.2 MiB/s average transfer rate. Full documentation for this controller can be found in the Synopsys DW AHB DMAC Databook: http://www.synopsys.com/designware/docs/iip/DW_ahb_dmac/latest/doc/dw_ahb_dmac_db.pdf The controller has lots of implementation options, so it's usually a good idea to check the data sheet of the chip it's intergrated on as well. The AT32AP7000 data sheet can be found here: http://www.atmel.com/dyn/products/datasheets.asp?family_id=682 Changes since v4: * Use client_count instead of dma_chan_is_in_use() * Add missing include * Unmap buffers unless client told us not to Changes since v3: * Update to latest DMA engine and DMA slave APIs * Embed the hw descriptor into the sw descriptor * Clean up and update MODULE_DESCRIPTION, copyright date, etc. Changes since v2: * Dequeue all pending transfers in terminate_all() * Rename dw_dmac.h -> dw_dmac_regs.h * Define and use controller-specific dma_slave data * Fix up a few outdated comments * Define hardware registers as structs (doesn't generate better code, unfortunately, but it looks nicer.) * Get number of channels from platform_data instead of hardcoding it based on CONFIG_WHATEVER_CPU. * Give slave clients exclusive access to the channel Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>, Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | | | avr32: Add platform data for AC97C platform deviceHans-Christian Egtvedt2008-07-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds platform data to the AC97C platform device. This will let the board add a GPIO line which is connected to the external codecs reset line. The platform data, ac97c_platform_data, must also contain the DMA controller ID, RX channel ID and TX channel ID. Tested with Wolfson WM9712 and AP7000. Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | | | avr32: clean up mci platform codeBen Nizette2008-07-18
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does a few small cleanups around the atmel mci platform code and in the atmel-mci driver. The platform changes simply removes an unused variable, uses the fact that by the end we always have some form of platform data and notes that GPIO_PIN_NONE != 0. This last point could cause the incorrect attempt to twice reserve pin PA0. While we've got the hood up, add linux/err.h to the atmel-mci.c include list. It needs it and generally pulls it by voodoo but I did once stumble across a config which don't build. This is against Linus' latest git. Signed-off-by: Ben Nizette <bn@niasdigital.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | | atmel-mci: Driver for Atmel on-chip MMC controllersHaavard Skinnemoen2008-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a driver for the MMC controller on the AP7000 chips from Atmel. It should in theory work on AT91 systems too with some tweaking, but since the DMA interface is quite different, it's not entirely clear if it's worth merging this with the at91_mci driver. This driver has been around for a while in BSPs and kernel sources provided by Atmel, but this particular version uses the generic DMA Engine framework (with the slave extensions) instead of an avr32-only DMA controller framework. This driver can also use PIO transfers when no DMA channels are available, and for transfers where using DMA may be difficult or impractical for some reason (e.g. the DMA setup overhead is usually not worth it for very short transfers, and badly aligned buffers or lengths are difficult to handle.) Currently, the driver only support PIO transfers. DMA support has been split out to a separate patch to hopefully make it easier to review. The driver has been tested using mmc-block and ext3fs on several SD, SDHC and MMC+ cards. Reads and writes work fine, with read transfer rates up to 3.5 MiB/s on fast cards with debugging disabled. The driver has also been tested using the mmc_test module on the same cards. All tests except 7, 9, 15 and 17 succeed. The first two are unsupported by all the cards I have, so I don't know if the driver handles this correctly. The last two fail because the hardware flags a Data CRC Error instead of a Data Timeout error. I'm not sure how to deal with that. Documentation for this controller can be found in many data sheets from Atmel, including the AT32AP7000 data sheet which can be found here: http://www.atmel.com/dyn/products/datasheets.asp?family_id=682 Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | | avr32: Fix typo of IFSR in a comment in the PIO header fileHans-Christian Egtvedt2008-07-04
| | | | | | | | | | | | | | | Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* | | avr32: Power Management support ("standby" and "mem" modes)Haavard Skinnemoen2008-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement Standby support. In this mode, we'll suspend all drivers, put the SDRAM in self-refresh mode and switch off the HSB bus ("frozen" mode.) Implement Suspend-to-mem support. In this mode, we suspend all drivers, put the SDRAM into self-refresh mode and switch off all internal clocks except the 32 kHz oscillator ("stop" mode.) The lowest-level suspend code runs from a small portion of SRAM allocated at startup time. This gets rid of a small potential race with the SDRAM where we might try to enter self-refresh mode in the middle of an icache burst. We also relocate all interrupt and exception handlers to SRAM during the small window when we enter and exit the low-power modes. We don't need to do any special tricks to start and stop the PLL. The main clock is automatically gated by hardware until the PLL is stable. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* | | avr32: Add system device for the internal interrupt controller (intc)Haavard Skinnemoen2008-07-02
| | | | | | | | | | | | | | | | | | | | | This makes the intc show up in sysfs (probably not very useful), and allows us to easily add suspend/resume support later. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>