kernel.git/drivers/spi/spi.c, branch linux-3.6.y

spi: Add "spi:" prefix to modalias attribute of spi devices

2012-05-21T02:14:48Z

The modalias attribute of spi devices doesn't have the "spi:" prefix that is used in the UEVENT and in spi device drivers. This patch adds the prefix so the modprobe can correctly match modules to devices. Reported-by: David Daney Signed-off-by: Grant Likely

spi: By default setup spi_masters with 1 chipselect and dynamics bus number

2012-05-20T05:42:08Z

Trivial simplification. Instead of requiring spi master drivers to always set the bus number (even when a dynamic number is desired), this patch modifies spi_alloc_master() to initialize num_chipselect to 1 (because there will always be at least one CS) and bus_num to -1 for dynamic allocation. This simplifies the code needed to be written for drivers. Signed-off-by: Grant Likely

spi: Dont call prepare/unprepare transfer if not populated

2012-05-11T03:23:58Z

Currently the prepare/unprepare transfer are called unconditionally. The assumption is that every driver using the spi core queue infrastructure has to populate the prepare and unprepare functions. This encourages drivers to populate empty functions to prevent crashing. This patch prevents the call to prepare/unprepare if not populated. Signed-off-by: Shubhrajyoti D Acked-by: Linus Walleij [grant.likely: fix whitespace defect] Signed-off-by: Grant Likely

spi/devicetree: Move devicetree support code into spi directory

2012-04-13T16:21:39Z

The SPI device tree support code isn't shared by any other subsystem. It can be moved into the core drivers/spi directory and the exported symbol can be removed. Signed-off-by: Grant Likely Cc: Rob Herring

spi: remove redundant variable assignment

2012-03-15T09:30:33Z

The status variable is guaranteed to be 0 at that location anyway. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Grant Likely

spi: release lock on error path in spi_pump_messages()

2012-03-11T02:43:37Z

We should release the lock here and enable IRQs before returning. Signed-off-by: Dan Carpenter [grant.likely: move unlock above dev_err() call] Signed-off-by: Grant Likely

spi: Mark spi_register_board_info() __devinit

2012-03-09T21:41:49Z

Some systems have SPI devices located on plugin modules which are enumerated at runtime as devices. The drivers for these plugin modules need to register their SPI devices at probe() time so want to be able to call spi_register_board_info() but that function is currently marked as __init rather than __devinit so this usage isn't legal. Change the annotation to __devinit to handle this. Signed-off-by: Mark Brown Signed-off-by: Grant Likely

spi/doc: spi_master_put must be followed up by kfree

2012-03-09T21:37:49Z

Signed-off-by: Uwe Kleine-König Signed-off-by: Grant Likely

spi: create a message queueing infrastructure

2012-03-08T02:19:48Z

This rips the message queue in the PL022 driver out and pushes it into (optional) common infrastructure. Drivers that want to use the message pumping thread will need to define the new per-messags transfer methods and leave the deprecated transfer() method as NULL. Most of the design is described in the documentation changes that are included in this patch. Since there is a queue that need to be stopped when the system is suspending/resuming, two new calls are implemented for the device drivers to call in their suspend()/resume() functions: spi_master_suspend() and spi_master_resume(). ChangeLog v1->v2: - Remove Kconfig entry and do not make the queue support optional at all, instead be more agressive and have it as part of the compulsory infrastructure. - If the .transfer() method is implemented, delete print a small deprecation notice and do not start the transfer pump. - Fix a bitrotted comment. ChangeLog v2->v3: - Fix up a problematic sequence courtesy of Chris Blair. - Stop rather than destroy the queue on suspend() courtesy of Chris Blair. Signed-off-by: Chris Blair Signed-off-by: Linus Walleij Tested-by: Mark Brown Reviewed-by: Mark Brown Signed-off-by: Grant Likely

spi: Fix device unregistration when unregistering the bus master

2011-12-13T23:45:35Z

Device are added as children of the bus master's parent device, but spi_unregister_master() looks for devices to unregister in the bus master's children. This results in the child devices not being unregistered. Fix this by registering devices as direct children of the bus master. Signed-off-by: Laurent Pinchart Signed-off-by: Grant Likely