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| author | Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> | 2022-07-15 19:31:18 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2022-07-26 09:34:21 +0200 |
| commit | bc4795850bdd971fe7ff5014a9283b975368da95 (patch) | |
| tree | 0070613352c257112bbb6d71ffcadbd7210392d9 /drivers/spi | |
| parent | e09784728689de7949d4cdd559a9590e0bfcc702 (diff) | |
| download | u-boot-bc4795850bdd971fe7ff5014a9283b975368da95.zip u-boot-bc4795850bdd971fe7ff5014a9283b975368da95.tar.gz u-boot-bc4795850bdd971fe7ff5014a9283b975368da95.tar.bz2 | |
spi: zynq_qspi: Add support for zynq_qspi_mem_exec_op
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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/zynq_qspi.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c index b138c3c..52db7b3 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 = { |