On 13 October 2014 23:41, Simon Glass sjg@chromium.org wrote:
U-Boot includes a SPI emulation driver already but it is not explicit, and is hidden in the SPI flash code.
Conceptually with sandbox's SPI implementation we have a layer which creates SPI bus transitions and a layer which interprets them, currently only for SPI flash. The latter is actually an emulation, and it should be possible to add more than one emulation - not just SPI flash.
Add a SPI emulation uclass so that other emulations can be plugged in to support different types of emulated devices on difference buses/chip selects.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com
Changes in v4: None Changes in v3:
- Add a function comment for sandbox_spi_get_emul()
Changes in v2:
- Fix comment on 'slave' parameter to match the parameter name
drivers/spi/Makefile | 1 + drivers/spi/spi-emul-uclass.c | 15 +++++++++++++++ include/dm/uclass-id.h | 1 + include/spi.h | 45 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 62 insertions(+)
Applied to u-boot-dm/master.