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spi: Introduce spi_get_device_match_data() helper

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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221020195421.10482-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko
2022-10-20 22:54:21 +03:00
committed by Mark Brown
parent f74d21829b
commit aea672d054
2 changed files with 15 additions and 0 deletions
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3
include/linux/spi/spi.h
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@@ -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)
{