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path: root/drivers/spi/spi_bfin5xx.c
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* Blackfin SPI Driver: add timeout while waiting for SPIF in dma irq handlerMike Frysinger2009-04-071-1/+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>
* Blackfin SPI Driver: get dma working for SPI flashesMike Frysinger2009-04-071-10/+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>
* Blackfin SPI Driver: SPI slave select code cleanupMike Frysinger2009-04-071-3/+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>
* Blackfin SPI Driver: use the properl BIT_CTL_xxx definesMike Frysinger2009-04-071-3/+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>
* Blackfin SPI Driver: do not check for SPI errors if DMA itself did not flag anyMike Frysinger2009-04-071-1/+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>
* Blackfin SPI Driver: add a few more DMA debug messagesMike Frysinger2009-04-071-2/+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>
* Blackfin SPI Driver: drop bogus cast and touchup dma labelMike Frysinger2009-04-071-2/+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>
* Blackfin SPI Driver: unify duplicated code in dma read/write pathsMike Frysinger2009-04-071-26/+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>
* Blackfin SPI Driver: pass DMA overflow error to the higher levelMike Frysinger2009-04-071-5/+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>
* Blackfin SPI Driver: use len_in_bytes when we care about the number of bytes ↵Mike Frysinger2009-04-071-3/+3
| | | | | | | | | | | | | | | transferred Use len_in_bytes when we care about the number of bytes transferred rather than the number of spi transactions. (this value will be the same for 8bit transfers, but not any other sizes) 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>
* Blackfin SPI Driver: remove useless <asm/cplbinit.h>Mike Frysinger2009-04-071-3/+0
| | | | | | | | | | | | We already moved bfin_addr_dcachable() and friends into the cacheflush header where it belongs, so don't need to include <asm/cplbinit.h> here. 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>
* Blackfin SPI Driver: Fix erroneous SPI Clock divisor calculationMichael Hennerich2009-04-071-0/+3
| | | | | | | | | | | | | Fix erroneous SPI Clock divisor calculation. Make sure SPI_BAUD is always >= 2. Writing a value of 0 or 1 to the SPI_BAUD register disables the serial clock. Signed-off-by: Michael Hennerich <michael.hennerich@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>
* Blackfin SPI Driver: ensure cache coherency before doing DMAVitja Makarov2009-04-071-3/+20
| | | | | | | | | | | | | Flush or invalidate caches before doing DMA transfer, if needed. [Mike Frysinger <vapier.adi@gmail.com>: add comment to address the issue "Full duplex only works for non-DMA transfers".] Signed-off-by: Vitja Makarov <vitja.makarov@gmail.com> 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>
* spi: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-241-2/+2
| | | | | | | Cc: dbrownell@users.sourceforge.net Cc: spi-devel-general@lists.sourceforge.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* spi_bfin5xx: use PIO for full duplex, not DMAVitja Makarov2008-05-011-2/+5
| | | | | | | | | | Use PIO for full-duplex transfers, instead of DMA. Signed-off-by: Vitja Makarov <vitja.makarov@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-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>
* spi: fix platform driver hotplug/coldplugKay Sievers2008-04-111-1/+1
| | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable SPI platform drivers, to allow module auto loading. [dbrownell@users.sourceforge.net: more drivers: registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-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>
* spi: spi_bfin5xx: remove unused labelMichael Hennerich2008-04-081-1/+0
| | | | | | | | | | Remove unused label, and associated compiler warning. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-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>
* spi: spi_bfin5xx: fix probe() sequencingVitja Makarov2008-04-081-6/+6
| | | | | | | | | | | | Fix bug in SPI probe: first initialize peripheral pins, and just after register spi master device. This fixes problems with SPI drivers built-in kernel. Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-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>
* spi: spi_bfin5xx build fixMike Frysinger2008-04-081-2/+2
| | | | | | | | | | | Fix breakage cause by overzealous line wrapping; there should be only one format string. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-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>
* spi_bfin: headers are not for changelogsMike Frysinger2008-02-061-29/+3
| | | | | | | | | | | Use simpler comment headers, and strip out information that is maintained in GIT history Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi_bfin: wait for tx to complete on write pathsSonic Zhang2008-02-061-12/+10
| | | | | | | | | | SPI writes should also not return until the last bit is sent. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi_bfin: wait for tx to complete on full duplex pathsBryan Wu2008-02-061-15/+3
| | | | | | | | | | | | | Full duplex SPI operation should not read a dummy byte at the first transfer. Bug and fix by Jean-Christian de Rivaz <jc@eclis.ch>: http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3678 Signed-off-by: Jean-Christian de Rivaz <jc@eclis.ch> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi_bfin: wait for tx to complete on some cs_chg pathsBryan Wu2008-02-061-28/+12
| | | | | | | | | | | | | PBX 2 SPI devices need the nonstandard "cs change per word" mechanism. This patch is one of three updating this driver to make the last data bits get sent before advancing the transfer ... in this case, before the chipselect gets deactivated. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi_bfin: use more useful GPIO labelsBryan Wu2008-02-061-1/+1
| | | | | | | | | | | Use the SPI driver's name when requesting gpio lines. When there are gpio conflicts, this helps to narrow down the problems; "bfin-spi" is not informative. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi_bfin: remove useless fault pathBryan Wu2008-02-061-13/+2
| | | | | | | | | | | Remove useless return status check in restore_state function. Issue was pointed out by Michael. Cc: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* Remove pointless casts from void pointersJeff Garzik2008-02-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | Mostly in and around irq handlers. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck Tony" <tony.luck@intel.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Karsten Keil <kkeil@suse.de> Acked-by: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: David Brownell <david-b@pacbell.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Holger Schurig <hs4233@mail.mn-solutions.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin5xx: fix typo in descriptionWill Newton2007-12-101-1/+1
| | | | | | | Signed-off-by: Will Newton <will.newton@gmail.com> Signed-off-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>
* Blackfin SPI driver: reconfigure speed_hz and bits_per_word in each spi transferBryan Wu2007-12-051-7/+45
| | | | | | | | | | | - reconfigure SPI baud from speed_hz of each spi transfer - according to spi_transfer.bits_per_word to reprogram register and setup correct SPI operation handlers Signed-off-by: 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>
* Blackfin SPI driver: move hard coded pin_req to board fileBryan Wu2007-12-051-21/+7
| | | | | | | | | | | | | Remove some sort of bloaty code, try to get these pin_req arrays built at compile-time - move this static things to the blackfin board file - add pin_req array to struct bfin5xx_spi_master - tested on BF537/BF548 with SPI flash Signed-off-by: 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>
* Blackfin SPI driver: use void __iomem * for regs_baseBryan Wu2007-12-051-5/+4
| | | | | | | Signed-off-by: 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>
* Blackfin SPI driver: use cpu_relax() to replace continue in while busywaitBryan Wu2007-12-051-39/+39
| | | | | | | Signed-off-by: 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>
* spi: spi_bfin: resequence DMA start/stopSonic Zhang2007-12-051-11/+19
| | | | | | | | | | Set correct baud for spi mmc and enable SPI only after DMA is started. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin: update handling of delay-after-deselectBryan Wu2007-12-051-15/+9
| | | | | | | | | | | | | | Move cs_chg_udelay handling (specific to this driver) to cs_deactive(), fixing a bug when some SPI LCD driver needs delay after cs_deactive. Fix bug reported by Cameron Barfield <cbarfield@cyberdata.net> https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=23630&feedback=Message%20replied. Cc: Cameron Barfield <cbarfield@cyberdata.net> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin: bugfix for 8..16 bit word sizesBryan Wu2007-12-051-1/+1
| | | | | | | | | | Fix bug in u16_cs_chg_reader to read data_len-2 bytes data firstly, then read out the last 2 bytes data Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin: handle multiple spi_mastersBryan Wu2007-12-051-182/+189
| | | | | | | | | | Move global SPI regs_base and dma_ch to struct driver_data. Test on BF54x SPI Flash with 2 spi_master devices enabled. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin: relocate spin/waitsSonic Zhang2007-12-051-32/+52
| | | | | | | | | | Move spin/waits to more correct locations in bfin SPI driver. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin: change handling of communication parametersSonic Zhang2007-12-051-75/+87
| | | | | | | | | | | | | | | | | Fix SPI driver to work with SPI flash ST M25P16 on bf548 Currently the SPI driver enables the SPI controller and sets the SPI baud register for each SPI transfer. But they should never be changed within a SPI message session, in which several SPI transfers are pumped. This patch moves SPI setting to the begining of a message session, and never disables SPI controller until an error occurs. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin, rearrange portmux callsSonic Zhang2007-12-051-25/+28
| | | | | | | | | | Move pin muxing to setup and cleanup methods. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin uses portmux for additional bussesSonic Zhang2007-12-051-20/+31
| | | | | | | | | | | Use portmux mechanism to support SPI busses 1 and 2, instead of just the original bus 0. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin uses platform device resourcesBryan Wu2007-12-051-41/+83
| | | | | | | | | | | Update spi driver to support multi-ports by using platform resources; tested on STAMP537+SPI_MMC, other boards need more testing. Plus other minor updates. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin, don't bypass spi frameworkMike Frysinger2007-12-051-0/+12
| | | | | | | | | | | Prevent people from setting bits in ctl_reg that the SPI framework already handles, hopefully we can one day drop ctl_reg completely Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin handles spi_transfer.cs_changeBryan Wu2007-12-051-22/+54
| | | | | | | | | | Respect per-transfer cs_change field (protocol tweaking support) by adding and using cs_active/cs_deactive functions. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: spi_bfin cleanups, error handlingBryan Wu2007-12-051-64/+47
| | | | | | | | | | | | | | | Cleanup and error handling - add error handling in SPI bus driver with selecting clients - use proper defines to access Blackfin MMRs - remove useless SSYNCs - cleaner use of portmux calls Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: bfin spi uses portmux callsMichael Hennerich2007-12-051-6/+22
| | | | | | | | | | Use new Blackfin portmux interface, add error handling. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* spi: initial BF54x SPI supportBryan Wu2007-12-051-70/+69
| | | | | | | | | | | | | | Initial BF54x SPI support - support BF54x SPI0 - clean up some code (whitespace etc) - will support multiports in the future - start using portmux calls Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-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>
* Add missing newlines to some uses of dev_<level> messagesJoe Perches2007-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found these while looking at printk uses. Add missing newlines to dev_<level> uses Add missing KERN_<level> prefixes to multiline dev_<level>s Fixed a wierd->weird spelling typo Added a newline to a printk Signed-off-by: Joe Perches <joe@perches.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Roland Dreier <rolandd@cisco.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: James Smart <James.Smart@Emulex.Com> Cc: Andrew Vasquez <andrew.vasquez@qlogic.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi doesn't need class_deviceTony Jones2007-10-161-1/+1
| | | | | | | | | | | | Make the SPI framework and drivers stop using class_device. Update docs accordingly ... highlighting just which sysfs paths should be "safe"/stable. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Clean up duplicate includes in drivers/spi/Jesper Juhl2007-10-161-1/+0
| | | | | | | | | | This patch cleans up duplicate includes in drivers/spi/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SPI driver hotplug/coldplug fixesDavid Brownell2007-08-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Update various SPI drivers so they properly support - coldplug through "modprobe $(cat /sys/devices/.../modalias)" - hotplug through "modprobe $(MODALIAS)" The basic rule for platform, SPI, and (new style) I2C drivers is just to make sure that modprobing the driver name works. In this case, all the relevant drivers are platform drivers, and this patch either (a) Changes the driver name, if no in-tree code would break; this is simpler and thus preferable in the long term. (b) Adds MODULE_ALIAS directives, when in-tree platforms declare devices using the current driver name; less desirable. Most systems will link SPI controller drivers statically, but there's no point in being needlessly broken. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Acked-by: Andrei Konovalov <akonovalov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin SPI driver: fix bug SPI DMA incomplete transmissionBryan Wu2007-06-111-5/+10
| | | | | | | | | | SPI writes intermittently drop bytes at end of DMA transfer http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3205 http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=2892 Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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