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path: root/drivers/spi/xilinx_spi.c
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* mfd: Use mfd cell platform_data for timberdale cells platform bitsSamuel Ortiz2011-05-261-2/+1
| | | | | | | | | | | With the addition of a device platform mfd_cell pointer, MFD drivers can go back to passing platform data back to their sub drivers. This allows for an mfd_cell->mfd_data removal and thus keep the sub drivers MFD agnostic. This is mostly needed for non MFD aware sub drivers. Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: mfd_cell is now implicitly available to timberdale driversAndres Salomon2011-03-231-1/+2
| | | | | | | | | | | | The cell's platform_data is now accessed with a helper function; change clients to use that, and remove the now-unused data_size. Note that the mfd's platform_data is marked __devinitdata. This is still correct in all cases except for the timbgpio driver, whose remove hook has been changed to no longer reference the pdata. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* driver-core: remove conditionals around devicetree pointersGrant Likely2011-01-211-6/+0
| | | | | | | | | | | Having conditional around the of_match_table and the of_node pointers turns out to make driver code use ugly #ifdef blocks. Drop the conditionals and remove the #ifdef blocks from the affected drivers. Also tidy up minor whitespace issues within the same hunks. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* spi/xilinx: merge OF support code into main driverGrant Likely2010-11-091-11/+45
| | | | | | | | | Now that the of_platform_bus_type has been merged with the platform bus type, a single platform driver can handle both OF and non-OF use cases. This patch merges the OF support into the platform driver. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Michal Simek <monstr@monstr.eu>
* spi/xilinx: fold platform_driver support into main bodyGrant Likely2010-11-091-6/+73
| | | | | | | | | This patch merges the platform driver support into the main body of xilinx_spi.c in preparation for merging the OF and non-OF support code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Michal Simek <monstr@monstr.eu>
* spi/xilinx: Eliminate pdata references from common code.Grant Likely2010-11-091-10/+4
| | | | | | | | | | | The current code has the OF binding modifying the platform_data pointer which it must not do, and the common code doesn't really need to use a pdata pointer. This patch eliminates the platform_data references from the common part of the driver in preparation for merging the OF and non-OF versions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Michal Simek <monstr@monstr.eu>
* of/spi: call of_register_spi_devices() from spi core codeAnatolij Gustschin2010-07-301-0/+3
| | | | | | | | | | Move of_register_spi_devices() call from drivers to spi_register_master(). Also change the function to use the struct device_node pointer from master spi device instead of passing it as function argument. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* spi: xilinx_spi: Fix up I/O routine wrapping bogosity.Paul Mundt2010-01-201-4/+24
| | | | | | | | | | | | | | | | | | | | | | | | | xilinx_spi presently makes some fairly questionable assumptions about I/O routines, and attempts to assign ioread32/iowrite32 and friends directly to its own internal function pointers. On many platforms these I/O routines are macros or wrappers and not actual functions on their own, resulting in things like: ERROR: "ioread32be" [drivers/spi/xilinx_spi.ko] undefined! ERROR: "iowrite32be" [drivers/spi/xilinx_spi.ko] undefined! ERROR: "iowrite32" [drivers/spi/xilinx_spi.ko] undefined! ERROR: "ioread32" [drivers/spi/xilinx_spi.ko] undefined! If xilinx_spi wants to do this sort of casting, it needs to provide its own wrappers for these, or change how it does accesses completely. I've opted for the first approach, and the attached silly patch does that. If someone with the hardware available wants to give the second option a try that's ok too. In any event, the current code is broken for at least: arm, avr32, blackfin, microblaze, mn10300, and sh. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* spi/xilinx_spi: fix incorrect castingGrant Likely2009-12-081-2/+2
| | | | | | | | | | | | This patch fixes the error exposed by the following build warning: drivers/spi/xilinx_spi.c: In function 'xilinx_spi_init': drivers/spi/xilinx_spi.c:411: warning: cast from pointer to integer of different size Fixed by change %x to %p in the format string. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* xilinx_spi: add support for the DS570 IP.Richard Röjfors2009-12-081-31/+87
| | | | | | | | | | | | | | | This patch adds in support for the DS570 IP. It's register compatible with the DS464, but adds support for 8/16/32 SPI. The 8/16/32 support is added by attaching callbacks reading/writing the proper amount of data. To indicate to the driver which amount of bits to use a new field is introduced in the platform data struct. Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: John Linn <John.Linn@xilinx.com> Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* xilinx_spi: Switch to iomem functions and support little endian.Richard Röjfors2009-12-081-42/+54
| | | | | | | | | | | | | | This patch changes the out_(be)(8|16|32) and in_(be)(8|16|32) calls to 32 bits ioread/iowrite. The read and write function are attached to the internal struct as callbacks, callback is selected depending on endianess. This will also build on platforms not supporting the in/out calls for instance x86. Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: John Linn <John.Linn@xilinx.com> Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* xilinx_spi: Split into of driver and generic part.Richard Röjfors2009-12-081-120/+39
| | | | | | | | | | | This patch splits the xilinx_spi driver into a generic part and a OF driver part. The reason for this is to later add in a platform driver as well. Tested-by: John Linn <John.Linn@xilinx.com> Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Xilinx: SPI: Fix bits_per_word for transfersJohn Linn2009-11-041-1/+2
| | | | | | | | | | | | The bits_per_word value can be set for each transfer, or can be set to zero in each transfer in which case it should default to the value in the driver. The driver was fixed to properly check the bits_per_word in the transfer that is passed in. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* spi: move more spi_setup() functionality into coreDavid Brownell2009-06-181-9/+3
| | | | | | | | | | | | | | | | | | | | | | Move some common spi_setup() error checks into the SPI framework from the spi_master controller drivers: - Add a new "mode_bits" field to spi_master - Use that in spi_setup to validate the spi->mode value being requested. Setting this new field is now mandatory for any controller supporting more than vanilla SPI_MODE_0. - Update all spi_master drivers to: * Initialize that field * Remove current spi_setup() checks using that value. This is a net minor code shrink. 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: move common spi_setup() functionality into coreDavid Brownell2009-06-181-6/+0
| | | | | | | | | | | | | | | | | | Start moving some spi_setup() functionality into the SPI core from the various spi_master controller drivers: - Make that function stop being an inline; - Move two common idioms from drivers into that new function: * Default bits_per_word to 8 if that field isn't set * Issue a standardized dev_dbg() message This is a net minor source code shrink, and supports enhancments found in some follow-up patches. 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>
* powerpc/virtex/spi: Xilinx SPI driver not releasing memoryJohn Linn2009-03-111-2/+7
| | | | | | | | | The driver was not releasing memory when it was removed or when there was a failure during probe. This fixes it. Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Xilinx: SPI: updated driver for device treeJohn Linn2009-01-091-56/+81
| | | | | | The driver was updated to use the device tree rather than the platform data. Signed-off-by: John Linn <john.linn@xilinx.com>
* xilinx_spi: test below 0 on unsigned irq in xilinx_spi_probe()Roel Kluin2008-07-241-2/+3
| | | | | | | | | | | xilinx_spi->irq is unsigned, so the test fails Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Andrei Konovalov <akonovalov@ru.mvista.com> Cc: Yuri Frolov <yfrolov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-281-4/+4
| | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@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>
* spi: fix platform driver hotplug/coldplugKay Sievers2008-04-111-0/+3
| | | | | | | | | | | | 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 driver hotplug/coldplug fixesDavid Brownell2007-08-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* SPI master driver for Xilinx virtexAndrei Konovalov2007-07-171-0/+434
Simple SPI master driver for Xilinx SPI controller. No support for multiple masters. Not using level 1 drivers from EDK. [akpm@linux-foundation.org: uninlining] Signed-off-by: Yuri Frolov <yfrolov@ru.mvista.com> Signed-off-by: Andrei Konovalov <akonovalov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.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>
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