diff options
| author | Lorenzo Bianconi <lorenzo.bianconi@redhat.com> | 2018-07-28 04:19:14 -0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-08-01 09:50:28 -0400 |
| commit | 4b859db2c60692560afbfef1b030d0ddef57b7ee (patch) | |
| tree | 70a19c5a126a3eacdfda8f8112a13950cdca0a05 /include | |
| parent | 304d34360b099020a12af2abb7e1ac506f4ba16d (diff) | |
spi: spi-gpio: add SPI_3WIRE support
Add SPI_3WIRE support to spi-gpio controller introducing
set_line_direction function pointer in spi_bitbang data structure.
Spi-gpio controller has been tested using hts221 temp/rh iio sensor
running in 3wire mode and lsm6dsm running in 4wire mode
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/spi/spi_bitbang.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h index 5847f00ef9cf..b7e021b274dc 100644 --- a/include/linux/spi/spi_bitbang.h +++ b/include/linux/spi/spi_bitbang.h | |||
| @@ -31,6 +31,7 @@ struct spi_bitbang { | |||
| 31 | u32 (*txrx_word[4])(struct spi_device *spi, | 31 | u32 (*txrx_word[4])(struct spi_device *spi, |
| 32 | unsigned nsecs, | 32 | unsigned nsecs, |
| 33 | u32 word, u8 bits, unsigned flags); | 33 | u32 word, u8 bits, unsigned flags); |
| 34 | int (*set_line_direction)(struct spi_device *spi, bool output); | ||
| 34 | }; | 35 | }; |
| 35 | 36 | ||
| 36 | /* you can call these default bitbang->master methods from your custom | 37 | /* you can call these default bitbang->master methods from your custom |