Message ID | 1657893679-20039-4-git-send-email-ashok.reddy.soma@xilinx.com |
---|---|
State | Accepted |
Commit | bc4795850bdd971fe7ff5014a9283b975368da95 |
Delegated to: | Michal Simek |
Headers | show
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Xilinx zynq_qspi updates
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expand
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diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c index b138c3c38a..52db7b3f21 100644 --- a/drivers/spi/zynq_qspi.c +++ b/drivers/spi/zynq_qspi.c @@ -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 = {
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> --- drivers/spi/zynq_qspi.c | 42 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+)