diff options
| author | Furquan Shaikh <furquan@chromium.org> | 2017-04-19 19:27:28 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-05-05 23:42:19 +0200 |
| commit | de705fa1f470683b9ea4ad91c1a9ae5a98942612 (patch) | |
| tree | 60873b2b6772bf459cd8db2f171ae7711d507b02 /src/southbridge/intel/common | |
| parent | f1db5fdb4d03b4766cf23e4b04a05b0fc05586a0 (diff) | |
drivers/spi: Re-factor spi_crop_chunk
spi_crop_chunk is a property of the SPI controller since it depends
upon the maximum transfer size that is supported by the
controller. Also, it is possible to implement this within spi-generic
layer by obtaining following parameters from the controller:
1. max_xfer_size: Maximum transfer size supported by the controller
(Size of 0 indicates invalid size, and unlimited transfer size is
indicated by UINT32_MAX.)
2. deduct_cmd_len: Whether cmd_len needs to be deducted from the
max_xfer_size to determine max data size that can be
transferred. (This is used by the amd boards.)
Change-Id: I81c199413f879c664682088e93bfa3f91c6a46e5
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19386
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Tested-by: coreboot org <coreboot.org@gmail.com>
Diffstat (limited to 'src/southbridge/intel/common')
| -rw-r--r-- | src/southbridge/intel/common/spi.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/src/southbridge/intel/common/spi.c b/src/southbridge/intel/common/spi.c index ee94937291..11318f7ec0 100644 --- a/src/southbridge/intel/common/spi.c +++ b/src/southbridge/intel/common/spi.c @@ -19,6 +19,7 @@ #include <stdlib.h> #include <string.h> #include <bootstate.h> +#include <commonlib/helpers.h> #include <delay.h> #include <arch/io.h> #include <console/console.h> @@ -504,11 +505,6 @@ static int spi_is_multichip (void) return !!((cntlr.flmap0 >> 8) & 3); } -unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len) -{ - return min(cntlr.databytes, buf_len); -} - static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, size_t bytesout, void *din, size_t bytesin) { @@ -660,6 +656,7 @@ static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, static const struct spi_ctrlr spi_ctrlr = { .xfer = spi_ctrlr_xfer, .xfer_vector = spi_xfer_two_vectors, + .max_xfer_size = member_size(ich9_spi_regs, fdata), }; int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) |