On 13 October 2014 23:41, Simon Glass sjg@chromium.org wrote:
Add a uclass which provides access to SPI buses and includes operations required by SPI.
For a time driver model will need to co-exist with the legacy SPI interface so some parts of the header file are changed depending on which is in use. The exports are adjusted also since some functions are not available with driver model.
Boards must define CONFIG_DM_SPI to use driver model for SPI.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com (Discussed some follow-up comments which will address in future add-ons)
Changes in v4: None Changes in v3:
- Add a cs_info() method to the driver model SPI API
- Add a uclass for a generic SPI device (for use with the 'sspi' command)
- Add missing comments to spi.h
- Correct typo where 'slave' should say 'bus'
- Fix two comment typos
- Put the cs member back into spi_slave
- Use an explicit chip select value instead of reusing device sequence number
Changes in v2:
- Add missing comments for struct spi_slave
- Fix code nits from Daniel Schwierzeck
- Use 'bus' instead of 'dev' to make the API clearer
common/exports.c | 4 +- drivers/spi/Makefile | 4 + drivers/spi/spi-uclass.c | 390 +++++++++++++++++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 2 + include/spi.h | 254 +++++++++++++++++++++++++++++- 5 files changed, 650 insertions(+), 4 deletions(-) create mode 100644 drivers/spi/spi-uclass.c
Applied to u-boot-dm/master.