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2009-04-07ACPI: thermal: use .notify method instead of installing handler directlyBjorn Helgaas1-23/+4
This patch adds a .notify() method. The presence of .notify() causes Linux/ACPI to manage event handlers and notify handlers on our behalf, so we don't have to install and remove them ourselves. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> CC: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-07ACPI battery: fix async boot oopsVegard Nossum1-1/+1
> BUG: unable to handle kernel NULL pointer dereference at (null) What happens is that the battery module's init sections are being freed before the async callback (which was marked __init) has run. This theory is supported by the fact that the bad RIP value is a vmalloc address. The immediate fix is to make this a non-init call. (A better long-term fix is of course to wait with init-section unloading until a module's async initcalls have been run, which would allow us to discard this function which is still only run once, after all. Perhaps a new async_initcall() function for the async/module API, if this is needed for other modules in the future?) Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Alessandro Suardi <alessandro.suardi@gmail.com> Tested-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-07Merge branch 'for-linus' of ↵Linus Torvalds9-15/+83
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: pci_slot: grab refcount on slot's bus PCI Hotplug: acpiphp: grab refcount on p2p subordinate bus PCI: allow PCI core hotplug to remove PCI root bus PCI: Fix oops in pci_vpd_truncate PCI: don't corrupt enable_cnt when doing manual resource alignment PCI: annotate pci_rescan_bus as __ref, not __devinit PCI-IOV: fix missing kernel-doc PCI: Setup disabled bridges even if buses are added PCI: SR-IOV quirk for Intel 82576 NIC
2009-04-07Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds7-10/+1162
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: loop: mutex already unlocked in loop_clr_fd() cfq-iosched: don't let idling interfere with plugging block: remove unused REQ_UNPLUG cfq-iosched: kill two unused cfqq flags cfq-iosched: change dispatch logic to deal with single requests at the time mflash: initial support cciss: change to discover first memory BAR cciss: kernel scan thread for MSA2012 cciss: fix residual count for block pc requests block: fix inconsistency in I/O stat accounting code block: elevator quiescing helpers
2009-04-07Merge branch 'upstream-linus' of ↵Linus Torvalds4-215/+302
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: sata_mv: shorten register names sata_mv: workaround errata SATA#13 sata_mv: cosmetic renames sata_mv: workaround errata SATA#26 sata_mv: workaround errata PCI#7 sata_mv: replace 0x1f with ATA_PIO4 (v2) sata_mv: fix irq mask races sata_mv: revert SoC irq breakage libata: ahci enclosure management bios workaround ata: Add TRIM infrastructure ata_piix: VGN-BX297XP wants the controller power up on suspend libata: Remove some redundant casts from pata_octeon_cf.c pata_artop: typo
2009-04-07Merge branch 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linuxLinus Torvalds7-94/+1437
* 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linux: i2c: imx: Make disable_delay a per-device variable i2c: xtensa s6000 i2c driver powerpc/85xx: i2c-mpc: use new I2C bindings for the Socates board i2c: i2c-mpc: make I2C bus speed configurable i2c: i2c-mpc: use dev based printout function i2c: i2c-mpc: various coding style fixes i2c: imx: Add missing request_mem_region in probe() i2c: i2c-s3c2410: Initialise Samsung I2C controller early i2c-s3c2410: Simplify bus frequency calculation i2c-s3c2410: sda_delay should be in ns, not clock ticks i2c: iMX/MXC support
2009-04-07Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds5-67/+1070
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: hwmon: Add Asus ATK0110 support hwmon: (lm95241) Convert to new-style i2c driver
2009-04-07parport: Use the PCI IRQ if offeredAlan Cox3-26/+54
PCI parallel port devices can IRQ share so we should stop them hogging the line and making a mess on modern PC systems. We know the sharing side works as the PCMCIA driver has shared the parallel port IRQ for some time. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07tty: jsm cleanupsBreno Leitao2-21/+12
Here are some cleanups, mainly removing unused variables and silly declarations. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Adjust path to gpio headersMike Frysinger1-8/+8
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07KGDB_SERIAL_CONSOLE check for moduleMike Frysinger1-1/+1
Depend on KGDB_SERIAL_CONSOLE being set to N rather than !Y, since it can be built as a module. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Change KCONFIG nameMike Frysinger1-1/+1
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07tty: Blackin CTS/RTSSonic Zhang2-58/+137
Both software emulated and hardware based CTS and RTS are enabled in serial driver. The CTS RTS PIN connection on BF548 UART port is defined as a modem device not as a host device. In order to test it under Linux, please nake a cross UART cable to exchange CTS and RTS signal. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Change hardware flow control from poll to interrupt drivenSonic Zhang1-49/+82
Only the CTS bit is affected. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Add support for the MAX3100 SPI UART.Christian Pellegrin2-0/+8
(akpm: queued pending confirmation of the new major number) [randy.dunlap@oracle.com: select SERIAL_CORE] Signed-off-by: Christian Pellegrin <chripell@fsfe.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07serqt: initial clean up pass for tty sideAlan Cox1-286/+163
Avoid using port->tty where possible (makes refcount fixing easier later). Remove unused code (the ioctl path is not used if the device has mget/mset functions) Remove various un-needed typecasts and long names so it could read it to do the changes. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07tty: Use the generic RS485 ioctl on CRISClaudio Scordino2-22/+59
Use the new general RS485 Linux data structure (introduced by Alan with commit number c26c56c0f40e200e61d1390629c806f6adaffbcc) in the Cris architecture too (currently, Cris still uses the old private data structure instead of the new one). Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Tested-by: Hinko Kocevar <hinko.kocevar@cetrtapot.si> Tested-by: Janez Cufer <janez.cufer@cetrtapot.si> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)Yang Hongyang3-3/+3
Replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_28BIT_MASK macro with DMA_BIT_MASK(28)Yang Hongyang1-2/+2
Replace all DMA_28BIT_MASK macro with DMA_BIT_MASK(28) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_30BIT_MASK macro with DMA_BIT_MASK(30)Yang Hongyang3-13/+13
Replace all DMA_30BIT_MASK macro with DMA_BIT_MASK(30) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31)Yang Hongyang3-5/+5
Replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)Yang Hongyang139-236/+232
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_39BIT_MASK macro with DMA_BIT_MASK(39)Yang Hongyang3-8/+8
Replace all DMA_39BIT_MASK macro with DMA_BIT_MASK(39) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_40BIT_MASK macro with DMA_BIT_MASK(40)Yang Hongyang5-8/+8
Replace all DMA_40BIT_MASK macro with DMA_BIT_MASK(40) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_48BIT_MASK macro with DMA_BIT_MASK(48)Yang Hongyang1-1/+1
Replace all DMA_48BIT_MASK macro with DMA_BIT_MASK(48) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)Yang Hongyang72-123/+120
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07fbdev: i.MX31: fix panning, error handling, clean upGuennadi Liakhovetski1-25/+31
1. check for errors returned from clk_get() 2. fix "Unbalanced enable for IRQ 160" 3. fix transmit descriptor handling in panning 4. clean frame buffer on blank - useful for OLED displays 5. formatting clean up Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07tdfxfb: make use of DDC information about connected monitorKrzysztof Helt1-4/+63
Read DDC information from a connected monitor and use it to select initial mode (if the mode is not specified). Also, use the information to protect against modes outside the monitor specs. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Tested-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07tdfxfb: move I2C functionality into the tdfxfbKrzysztof Helt2-1/+208
The I2C functionality provided by the i2c-voodoo3 driver is moved into the tdfxfb (frame buffer driver for Voodoo3 cards). This way there is no conflict between the i2c driver and the fb driver. The tdfxfb does not make use from the DDC functionality yet but provides all the functionality of the i2c-voodoo3 driver. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07spi_imx: set spi_master.dma_alignment = 4Mike Rapoport1-0/+2
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Cc: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07pxa2xx_spi: set spi_master.dma_alignment = 8Mike Rapoport1-0/+2
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Cc: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07spi_bfin5xx: remove unused IS_DMA_ALIGNED macroMike Rapoport1-2/+0
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Cc: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07spi: pxa2xx_spi: introduce chipselect GPIO to simplify the common casesEric Miao1-18/+78
Most SPI peripherals use GPIOs as their chip selects, introduce .gpio_cs for this. Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07spi: limit reaches -1, tested 0Roel Kluin1-1/+2
With a postfix decrement limit will reach -1 rather than 0, so the warning will not be issued. Also, add a cpu_relax() into the busy-wait loop. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Mariusz Ceier <mceier@gmail.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: Make mmc_spi driver work on BlackfinWolfgang Muees1-142/+108
1. Rewrite of the non-dma data transfer functions to use only ONE mode of TIMOD (TIMOD=0x1). With TIMOD=0, it was not possible to set the TX bit pattern. So the TDBR = 0xFFFF inside the read calls won't work. 2. Clear SPI_RDBR before reading and before duplex transfer. Otherwise the garbage data in RDBR will get read. Since mmc_spi uses a lot of duplex transfers, this is the main cause of mmc_spi failure. 3. Poll RXS for transfer completion. Polling SPIF or TXS cannot guarantee transfer completion. This may interrupt a transfer before it is finished. Also this may leave garbage data in buffer and affect next transfer. [Yi Li <yi.li@analog.com>: add a field "u16 idle_tx_val" in "struct bfin5xx_spi_chip" to specify the value to transmit if no TX value is supplied.] Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de> Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: Add GPIO controlled SPI Slave Select supportMichael Hennerich1-8/+32
Add support for GPIO controlled SPI Chip Selects. To make use of this feature, set chip_select = 0 and add a proper cs_gpio to your controller_data. struct spi_board_info .chip_select = 0 struct bfin5xx_spi_chip .cs_gpio = GPIO_P### There are various SPI devices that require SPI MODE_0, and need to have the Chip Selects asserted during the entire transfer. Consider using SPI_MODE_3 (SPI_CPHA | SPI_CPOL) if your device allows it. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: fix NULL pointer crashMike Frysinger1-0/+3
Fix NULL pointer crash when cleaning up from invalid platform resources Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: use bfin_spi_ prefix on all functionsMike Frysinger1-111/+112
Do this because when things crash, we get simple names like "setup" and "start_queue" which is pretty difficult to trace back to the real thing: the spi driver Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: fix bug - correct usage of struct spi_transfer.cs_changeYi Li1-9/+8
According to comments in linux/spi/spi.h: * All SPI transfers start with the relevant chipselect active. Normally * it stays selected until after the last transfer in a message. Drivers * can affect the chipselect signal using cs_change. * * (i) If the transfer isn't the last one in the message, this flag is * used to make the chipselect briefly go inactive in the middle of the * message. Toggling chipselect in this way may be needed to terminate * a chip command, letting a single spi_message perform all of group of * chip transactions together. * * (ii) When the transfer is the last one in the message, the chip may * stay selected until the next transfer. On multi-device SPI busses * with nothing blocking messages going to other devices, this is just * a performance hint; starting a message to another device deselects * this one. But in other cases, this can be used to ensure correctness. * Some devices need protocol transactions to be built from a series of * spi_message submissions, where the content of one message is determined * by the results of previous messages and where the whole transaction * ends when the chipselect goes intactive. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: fix bug - spi controller driver does not ↵Yi Li1-3/+2
assert/deassert CS correctly This bug can be observed when two SPI devices are sharing the spi bus: One device is set as SPI CS 7, another one is using SPI CS 4. In spi_bfin5xx.c: cs_active(), cs_deactive() are used to control SPI_FLG register. From the debug bellow: cs_active: flag: 0x7f91, chip->flag: 0x7f80, cs: 7 cs_active: flag: 0xef91, chip->flag: 0xef10, cs: 4 When device A (cs_7) activate CS 7, SPI_FLG is set as 0x7f91 (however, SPI_FLG should be set as 0x7f80, or 0x6f91 if in broadcast mode). Due to some HW bug (very possibly), if SPI_FLG is set as 0x7f91, SPISSEL7 is asserted, however SPISSEL4 will be asserted too (I can see this using the scope). This is unreasonable according to HRM. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: tweak magic spi dma sequence to get it working on BF54xMike Frysinger1-1/+2
Without this change, SPI DMA is not reliably under stress tests. Obiviously it's a hardware issue which is not addressed by any document. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: add timeout while waiting for SPIF in dma irq handlerMike Frysinger1-1/+11
The "while" endless loop will cause the system hang if hardware error, so we add timeout control to make the system alive. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: get dma working for SPI flashesMike Frysinger1-10/+16
When using a BF533-STAMP here with a W25X10 SPI flash. It works fine when enable_dma is disabled, but doesn't work at all when turning DMA on. We get just 0xff bytes back when trying to read the device. Change the code around so that it programs the SPI first and then enables DMA, it seems to work a lot better ... Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: SPI slave select code cleanupMike Frysinger1-3/+1
- remove duplicated definition MAX_SPI_SSEL - remove unnecessary array size Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: use the properl BIT_CTL_xxx definesMike Frysinger1-3/+3
use the properl BIT_CTL_... defines rather than the internal driv er CFG_SPI_... defines Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: do not check for SPI errors if DMA itself did not flag anyMike Frysinger1-1/+1
We only need to check SPI error when DMA failes, cause that is the DMA IRQ handling routine. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: add a few more DMA debug messagesMike Frysinger1-2/+10
Because of DMA hardware issue, we were trying to use software workaround. This patch add some useful debug messages to help us debugging the DMA code. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: drop bogus cast and touchup dma labelMike Frysinger1-2/+2
Blackfin's related DMA callback API doesn't need void * cast, so drop it. And this driver is for all Blackfin processors not only for BF53x, we update the DMA request label for more meaningful information. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: unify duplicated code in dma read/write pathsMike Frysinger1-26/+21
For DMA TX/RX operation in pump_transfers, DMA contriguration code in TX and RX paths are almost the same. This patch unify the duplicated DMA code to make it more readable. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07Blackfin SPI Driver: pass DMA overflow error to the higher levelMike Frysinger1-5/+11
If the SPI bus registers a receive overflow error, pass the result back up to the higher levels. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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