diff options
| author | Gabe Black <gabeblack@google.com> | 2014-03-27 21:52:43 -0700 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-07-05 11:36:20 +0200 |
| commit | 93d9f92cfbb214718e211aee71ac869c77f725ee (patch) | |
| tree | 5ce61557bc84bd374744ba4ca07a8a48825ae58a /src/cpu | |
| parent | 1e187356e831583830a22cf051c792470d0440f5 (diff) | |
spi: Change spi_xfer to work in units of bytes instead of bits.
Whenever spi_xfer is called and whenver it's implemented, the natural unit for
the amount of data being transfered is bytes. The API expected things to be
expressed in bits, however, which led to a lot of multiplying and dividing by
eight, and checkes to make sure things were multiples of eight. All of that
can now be removed.
BUG=None
TEST=Built and booted on link, falco, peach_pit and nyan and looked for SPI
errors in the firmware log. Built for rambi.
BRANCH=None
Change-Id: I02365bdb6960a35def7be7a0cd1aa0a2cc09392f
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/192049
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
[km: cherry-pick from chromium]
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6175
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/samsung/exynos5420/spi.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/cpu/samsung/exynos5420/spi.c b/src/cpu/samsung/exynos5420/spi.c index 5c546cc14c..46b9ced4b3 100644 --- a/src/cpu/samsung/exynos5420/spi.c +++ b/src/cpu/samsung/exynos5420/spi.c @@ -258,15 +258,13 @@ int spi_claim_bus(struct spi_slave *slave) return 0; } -int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bitsout, - void *din, unsigned int bitsin) +int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int out_bytes, + void *din, unsigned int in_bytes) { - unsigned int out_bytes = bitsout / 8, in_bytes = bitsin / 8; uint8_t *out_ptr = (uint8_t *)dout, *in_ptr = (uint8_t *)din; int offset, todo, len; int ret = 0; - ASSERT(bitsout % 8 == 0 && bitsin % 8 == 0); len = MAX(out_bytes, in_bytes); /* |