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| author |   Sebastian Reichel <sebastian.reichel@collabora.com> | 2021-06-21 19:53:55 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2021-06-22 12:54:59 +0100 |
| commit | 0c79378c01999bd60057c475f163ec807c24891f (patch) | |
| tree | 7a3c43d13c4cdfb0c8a748e3c58f4a762cdeb224 /include/linux/spi | |
| parent | spi: xilinx: convert to yaml (diff) | |
| download | linux-dev-0c79378c01999bd60057c475f163ec807c24891f.tar.xz linux-dev-0c79378c01999bd60057c475f163ec807c24891f.zip | |
spi: add ancillary device support
Introduce support for ancillary devices, similar to existing
implementation for I2C. This is useful for devices having
multiple chip-selects, for example some microcontrollers
provide a normal SPI interface and a flashing SPI interface.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20210621175359.126729-2-sebastian.reichel@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/spi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index f924160e995f..3ada36175e5f 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -299,6 +299,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) driver_unregister(&sdrv->driver); } +extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 chip_select); + /* use a define to avoid include chaining to get THIS_MODULE */ #define spi_register_driver(driver) \ __spi_register_driver(THIS_MODULE, driver) |