xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

spi: spi-gpio: add SPI_3WIRE support

Browse Source 
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>
This commit is contained in:
Lorenzo Bianconi
2018-07-28 10:19:14 +02:00
committed by Mark Brown
parent 304d34360b
commit 4b859db2c6
3 changed files with 33 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/spi/spi_bitbang.h
View File

@@ -31,6 +31,7 @@ struct spi_bitbang {
u32 (*txrx_word[4])(struct spi_device *spi,
unsigned nsecs,
u32 word, u8 bits, unsigned flags);
int (*set_line_direction)(struct spi_device *spi, bool output);
};
/* you can call these default bitbang->master methods from your custom