diff options
| author | Stefan Binding <sbinding@opensource.cirrus.com> | 2022-01-21 20:24:23 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-02-01 20:38:45 +0300 |
| commit | e3dc1399506f894110667ee5c66a6a70f06f3348 (patch) | |
| tree | 5a31f475d4e7fe7501d778eb5ac8f603c217924a /include | |
| parent | e783362eb54cd99b2cac8b3a9aeac942e6f6ac07 (diff) | |
| download | linux-e3dc1399506f894110667ee5c66a6a70f06f3348.tar.xz | |
spi: Make spi_alloc_device and spi_add_device public again
This functions were previously made private since they
were not used. However, these functions will be needed
again.
Partial revert of commit da21fde0fdb3
("spi: Make several public functions private to spi.c")
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220121172431.6876-2-sbinding@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/spi/spi.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 7ab3fed7b804..0346a3ff27fd 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -1452,8 +1452,20 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) * use spi_new_device() to describe each device. You can also call * spi_unregister_device() to start making that device vanish, but * normally that would be handled by spi_unregister_controller(). + * + * You can also use spi_alloc_device() and spi_add_device() to use a two + * stage registration sequence for each spi_device. This gives the caller + * some more control over the spi_device structure before it is registered, + * but requires that caller to initialize fields that would otherwise + * be defined using the board info. */ extern struct spi_device * +spi_alloc_device(struct spi_controller *ctlr); + +extern int +spi_add_device(struct spi_device *spi); + +extern struct spi_device * spi_new_device(struct spi_controller *, struct spi_board_info *); extern void spi_unregister_device(struct spi_device *spi); |