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spi: intel: Implement adjust_op_size() 

This allows us to get rid of the checks in the intel_spi_[sh]w_cycle()
and makes it possible for the SPI-NOR core to split the transaction into
smaller chunks as needed.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20221025064623.22808-3-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mika Westerberg 2022-10-25 09:46:21 +03:00 committed by Mark Brown
parent f73f6bd200
commit 8a9a784fb3
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 7 deletions
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14
drivers/spi/spi-intel.c
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@ -363,10 +363,6 @@ static int intel_spi_hw_cycle(struct intel_spi *ispi,
val = readl(ispi->base + HSFSTS_CTL);
val &= ~(HSFSTS_CTL_FCYCLE_MASK | HSFSTS_CTL_FDBC_MASK);
if (len > INTEL_SPI_FIFO_SZ)
return -EINVAL;
val |= (len - 1) << HSFSTS_CTL_FDBC_SHIFT;
val |= HSFSTS_CTL_FCERR | HSFSTS_CTL_FDONE;
val |= HSFSTS_CTL_FGO;
@ -397,9 +393,6 @@ static int intel_spi_sw_cycle(struct intel_spi *ispi, u8 opcode, size_t len,
if (ret < 0)
return ret;
if (len > INTEL_SPI_FIFO_SZ)
return -EINVAL;
/*
* Always clear it after each SW sequencer operation regardless
* of whether it is successful or not.
@ -704,6 +697,12 @@ static int intel_spi_erase(struct intel_spi *ispi, const struct spi_mem *mem,
return 0;
}
static int intel_spi_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op)
{
op->data.nbytes = clamp_val(op->data.nbytes, 0, INTEL_SPI_FIFO_SZ);
return 0;
}
static bool intel_spi_cmp_mem_op(const struct intel_spi_mem_op *iop,
const struct spi_mem_op *op)
{
@ -844,6 +843,7 @@ static ssize_t intel_spi_dirmap_write(struct spi_mem_dirmap_desc *desc, u64 offs
}
static const struct spi_controller_mem_ops intel_spi_mem_ops = {
.adjust_op_size = intel_spi_adjust_op_size,
.supports_op = intel_spi_supports_mem_op,
.exec_op = intel_spi_exec_mem_op,
.get_name = intel_spi_get_name,