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rose: spi: add SPI master halfduplex mode

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This change adds 3-wire mode support in STM32 SPI master driver.

BUG=chromium:688979
TEST=manual
     enable CONFIG_SPI_HALFDUPLEX
     read id from SPI heatmap sensor
BRANCH=none

Change-Id: I09139dcbfe39a427721451db6842ea712abf2e33
Signed-off-by: Rong Chang <rongchang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/444630
Reviewed-by: Wei-Ning Huang <wnhuang@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Rong Chang
2017-02-20 16:15:09 +08:00
committed by chrome-bot
parent 1d10236f07
commit b3d0d05aa9
2 changed files with 63 additions and 27 deletions
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3
include/config.h
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@@ -2018,6 +2018,9 @@
/* SPI master feature */
#undef CONFIG_SPI_MASTER
/* SPI master halfduplex/3-wire mode */
#undef CONFIG_SPI_HALFDUPLEX
/* Support STM32 SPI1 as master. */
#undef CONFIG_STM32_SPI1_MASTER