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/soc/nvidia/tegra124/spi.c | 6 +----- src/soc/nvidia/tegra210/spi.c | 6 +----- 2 files changed, 2 insertions(+), 10 deletions(-) (limited to 'src/soc/nvidia') diff --git a/src/soc/nvidia/tegra124/spi.c b/src/soc/nvidia/tegra124/spi.c index 5d8084fbdf..4ecd67a8a4 100644 --- a/src/soc/nvidia/tegra124/spi.c +++ b/src/soc/nvidia/tegra124/spi.c @@ -714,11 +714,6 @@ static int xfer_finish(struct tegra_spi_channel *spi) return ret; } -unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len) -{ - return buf_len; -} - static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, size_t out_bytes, void *din, size_t in_bytes) { @@ -802,6 +797,7 @@ static const struct spi_ctrlr spi_ctrlr = { .claim_bus = spi_ctrlr_claim_bus, .release_bus = spi_ctrlr_release_bus, .xfer = spi_ctrlr_xfer, + .max_xfer_size = SPI_CTRLR_DEFAULT_MAX_XFER_SIZE, }; int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) diff --git a/src/soc/nvidia/tegra210/spi.c b/src/soc/nvidia/tegra210/spi.c index 292135542a..0987ddb53a 100644 --- a/src/soc/nvidia/tegra210/spi.c +++ b/src/soc/nvidia/tegra210/spi.c @@ -750,11 +750,6 @@ static int xfer_finish(struct tegra_spi_channel *spi) return ret; } -unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len) -{ - return buf_len; -} - static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, size_t out_bytes, void *din, size_t in_bytes) { @@ -838,6 +833,7 @@ static const struct spi_ctrlr spi_ctrlr = { .claim_bus = spi_ctrlr_claim_bus, .release_bus = spi_ctrlr_release_bus, .xfer = spi_ctrlr_xfer, + .max_xfer_size = SPI_CTRLR_DEFAULT_MAX_XFER_SIZE, }; int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) -- cgit v1.2.3