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spi: spi-mem: Check the controller extra capabilities

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Controllers can now provide a spi-mem capabilities structure. Let's make
use of it in spi_mem_controller_default_supports_op(). As we want to
check for DTR operations as well as normal operations in a single
helper, let's pull the necessary checks from spi_mem_dtr_supports_op()
for now.

However, because no controller provide these extra capabilities, this
change has no effect so far.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/linux-mtd/20220127091808.1043392-3-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2022-01-27 10:17:57 +01:00
parent 4a3cc7fb6e
commit cb7e96ee81
1 changed files with 13 additions and 4 deletions
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17
drivers/spi/spi-mem.c
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@ -173,11 +173,20 @@ EXPORT_SYMBOL_GPL(spi_mem_dtr_supports_op);
bool spi_mem_default_supports_op(struct spi_mem *mem,
const struct spi_mem_op *op)
{
if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
return false;
struct spi_controller *ctlr = mem->spi->controller;
bool op_is_dtr =
op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr;
if (op->cmd.nbytes != 1)
return false;
if (op_is_dtr) {
if (!spi_mem_controller_is_capable(ctlr, dtr))
return false;
if (op->cmd.nbytes != 2)
return false;
} else {
if (op->cmd.nbytes != 1)
return false;
}
return spi_mem_check_buswidth(mem, op);
}