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spi: zynq_qspi: Add support for zynq_qspi_mem_exec_op

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Add support_ops function zynq_qspi_mem_exec_op to check controller
supported operations by spi-mem framework. Current default support ops
function does not allow dummy buswidth no more than 1, unless we are
using buswidth is 4 for TX.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657893679-20039-4-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Ashok Reddy Soma 2022-07-15 19:31:18 +05:30 • committed by Michal Simek
parent e097847286
commit bc4795850b
1 changed files with 42 additions and 0 deletions
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42
drivers/spi/zynq_qspi.c
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@ -736,8 +736,50 @@ static int zynq_qspi_exec_op(struct spi_slave *slave,
return 0;
}
static int zynq_qspi_check_buswidth(struct spi_slave *slave, u8 width)
{
u32 mode = slave->mode;
switch (width) {
case 1:
return 0;
case 2:
if (mode & SPI_RX_DUAL)
return 0;
break;
case 4:
if (mode & SPI_RX_QUAD)
return 0;
break;
}
return -EOPNOTSUPP;
}
bool zynq_qspi_mem_exec_op(struct spi_slave *slave,
const struct spi_mem_op *op)
{
if (zynq_qspi_check_buswidth(slave, op->cmd.buswidth))
return false;
if (op->addr.nbytes &&
zynq_qspi_check_buswidth(slave, op->addr.buswidth))
return false;
if (op->dummy.nbytes &&
zynq_qspi_check_buswidth(slave, op->dummy.buswidth))
return false;
if (op->data.dir != SPI_MEM_NO_DATA &&
zynq_qspi_check_buswidth(slave, op->data.buswidth))
return false;
return true;
}
static const struct spi_controller_mem_ops zynq_qspi_mem_ops = {
.exec_op = zynq_qspi_exec_op,
.supports_op = zynq_qspi_mem_exec_op,
};
static const struct dm_spi_ops zynq_qspi_ops = {