Unverified Commit aea672d0 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
Browse files

spi: Introduce spi_get_device_match_data() helper 



The proposed spi_get_device_match_data() helper is for retrieving
a driver data associated with the ID in an ID table. First, it tries
to get driver data of the device enumerated by firmware interface
(usually Device Tree or ACPI). If none is found it falls back to
the SPI ID table matching.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221020195421.10482-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f74d2182

drivers/spi/spi.c

+12 −0
Original line number Diff line number Diff line
@@ -360,6 +360,18 @@ const struct spi_device_id *spi_get_device_id(const struct spi_device *sdev) 
}

EXPORT_SYMBOL_GPL(spi_get_device_id);



const void *spi_get_device_match_data(const struct spi_device *sdev)

{

	const void *match;



	match = device_get_match_data(&sdev->dev);

	if (match)

		return match;



	return (const void *)spi_get_device_id(sdev)->driver_data;

}

EXPORT_SYMBOL_GPL(spi_get_device_match_data);



static int spi_match_device(struct device *dev, struct device_driver *drv)

{

	const struct spi_device	*spi = to_spi_device(dev);

include/linux/spi/spi.h

+3 −0
Original line number Diff line number Diff line
@@ -1514,6 +1514,9 @@ extern void spi_unregister_device(struct spi_device *spi); 
extern const struct spi_device_id *

spi_get_device_id(const struct spi_device *sdev);



extern const void *

spi_get_device_match_data(const struct spi_device *sdev);



static inline bool

spi_transfer_is_last(struct spi_controller *ctlr, struct spi_transfer *xfer)

{