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spi: Pass pointer to spi_slave structure in spi_setup_slave

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For spi_setup_slave, instead of making the platform driver return a
pointer to spi_slave structure, pass in a structure pointer that can be
filled in by the driver as required. This removes the need for platform
drivers to maintain a slave structure in data/CAR section.

BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully

Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17683
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh
2016-12-01 01:02:44 -08:00
committed by Furquan Shaikh
parent 0dba0254ea
commit 36b81af9e8
30 changed files with 201 additions and 235 deletions
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7
src/include/spi-generic.h
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@ -48,11 +48,12 @@ void spi_init(void);
*
* bus: Bus ID of the slave chip.
* cs: Chip select ID of the slave chip on the specified bus.
* slave: Pointer to slave structure that needs to be initialized.
*
* Returns: A spi_slave reference that can be used in subsequent SPI
* calls, or NULL if one or more of the parameters are not supported.
* Returns:
* 0 on success, -1 on error
*/
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs);
int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave);
/*-----------------------------------------------------------------------
* Claim the bus and prepare it for communication with a given slave.