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Merge remote-tracking branch 'spi/fix/core' into spi-linus

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Mark Brown
2014-01-23 13:07:00 +00:00
parent 7e22e91102 13a4279880
commit 7e2c225d58
2 changed files with 27 additions and 13 deletions
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12
include/linux/spi/spi.h
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@@ -277,15 +277,17 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @unprepare_transfer_hardware: there are currently no more messages on the
* queue so the subsystem notifies the driver that it may relax the
* hardware by issuing this call
* @set_cs: assert or deassert chip select, true to assert. May be called
* @set_cs: set the logic level of the chip select line. May be called
* from interrupt context.
* @prepare_message: set up the controller to transfer a single message,
* for example doing DMA mapping. Called from threaded
* context.
* @transfer_one: transfer a single spi_transfer. When the
* driver is finished with this transfer it must call
* spi_finalize_current_transfer() so the subsystem can issue
* the next transfer
* @transfer_one: transfer a single spi_transfer.
* - return 0 if the transfer is finished,
* - return 1 if the transfer is still in progress. When
* the driver is finished with this transfer it must
* call spi_finalize_current_transfer() so the subsystem
* can issue the next transfer
* @unprepare_message: undo any work done by prepare_message().
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
* number. Any individual value may be -ENOENT for CS lines that