diff options
author | Julius Werner <jwerner@chromium.org> | 2019-06-06 17:09:58 -0700 |
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committer | Julius Werner <jwerner@chromium.org> | 2019-06-10 18:02:50 +0000 |
commit | 127a55e91d46623f700ba39f2679e3606ed0b2fb (patch) | |
tree | f2b021a67bdc1e411fb40a5abecc0ddf763bee2d /src/soc/qualcomm/sdm845/qspi.c | |
parent | 99e45ceb35ff9a4c48e516e6d005ebfae54b6591 (diff) | |
download | coreboot-127a55e91d46623f700ba39f2679e3606ed0b2fb.tar.xz |
sdm845: qspi: Add Dual SPI support
This patch adds support for the Dual SPI feature (SDR 2-bit in Qualcomm
terminology) to the QSPI controller.
Change-Id: I7aed2ccd9627f5de5dd760b418f74d56d2c031d3
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33284
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/qualcomm/sdm845/qspi.c')
-rw-r--r-- | src/soc/qualcomm/sdm845/qspi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/soc/qualcomm/sdm845/qspi.c b/src/soc/qualcomm/sdm845/qspi.c index b9a5194a10..cced567a87 100644 --- a/src/soc/qualcomm/sdm845/qspi.c +++ b/src/soc/qualcomm/sdm845/qspi.c @@ -277,11 +277,9 @@ void sdm845_release_bus(const struct spi_slave *slave) cs_change(CS_DEASSERT); } -int sdm845_xfer(const struct spi_slave *slave, const void *dout, - size_t out_bytes, void *din, size_t in_bytes) +static int xfer(enum qspi_mode mode, const void *dout, size_t out_bytes, + void *din, size_t in_bytes) { - enum qspi_mode mode = SDR_1BIT; - if ((out_bytes && !dout) || (in_bytes && !din) || (in_bytes && out_bytes)) { return -1; @@ -294,3 +292,15 @@ int sdm845_xfer(const struct spi_slave *slave, const void *dout, return 0; } + +int sdm845_xfer(const struct spi_slave *slave, const void *dout, + size_t out_bytes, void *din, size_t in_bytes) +{ + return xfer(SDR_1BIT, dout, out_bytes, din, in_bytes); +} + +int sdm845_xfer_dual(const struct spi_slave *slave, const void *dout, + size_t out_bytes, void *din, size_t in_bytes) +{ + return xfer(SDR_2BIT, dout, out_bytes, din, in_bytes); +} |