From de705fa1f470683b9ea4ad91c1a9ae5a98942612 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Wed, 19 Apr 2017 19:27:28 -0700 Subject: 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 Reviewed-on: https://review.coreboot.org/19386 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) Tested-by: coreboot org --- src/southbridge/amd/sb700/spi.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'src/southbridge/amd/sb700/spi.c') diff --git a/src/southbridge/amd/sb700/spi.c b/src/southbridge/amd/sb700/spi.c index 5d56415b44..9731896803 100644 --- a/src/southbridge/amd/sb700/spi.c +++ b/src/southbridge/amd/sb700/spi.c @@ -40,11 +40,6 @@ void spi_init(void) /* Not needed */ } -unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len) -{ - return min(AMD_SB_SPI_TX_LEN - cmd_len, buf_len); -} - static void reset_internal_fifo_pointer(void) { uint32_t spibar = get_spi_bar(); @@ -121,6 +116,8 @@ 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 = AMD_SB_SPI_TX_LEN, + .deduct_cmd_len = true, }; int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) -- cgit v1.2.3