spi: spi-mem: Kill the spi_mem_dtr_supports_op() helper

Now that spi_mem_default_supports_op() has access to the static
controller capabilities (relating to memory operations), and now that
these capabilities have been filled by the relevant controllers, there
is no need for a specific helper checking only DTR operations, so let's
just kill spi_mem_dtr_supports_op() and simply use
spi_mem_default_supports_op() instead.

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/20220127091808.1043392-6-miquel.raynal@bootlin.com

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 455b90d..b0c9f62 100644 (file)
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1441,10 +1441,7 @@ static bool cqspi_supports_mem_op(struct spi_mem *mem,
        if (!(all_true || all_false))
                return false;
 
-       if (all_true)
-               return spi_mem_dtr_supports_op(mem, op);
-       else
-               return spi_mem_default_supports_op(mem, op);
+       return spi_mem_default_supports_op(mem, op);
 }
 
 static int cqspi_of_get_flash_pdata(struct platform_device *pdev,

diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index 86e6597..ed966d8 100644 (file)
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -160,16 +160,6 @@ static bool spi_mem_check_buswidth(struct spi_mem *mem,
        return true;
 }
 
-bool spi_mem_dtr_supports_op(struct spi_mem *mem,
-                            const struct spi_mem_op *op)
-{
-       if (op->cmd.nbytes != 2)
-               return false;
-
-       return spi_mem_check_buswidth(mem, op);
-}
-EXPORT_SYMBOL_GPL(spi_mem_dtr_supports_op);
-
 bool spi_mem_default_supports_op(struct spi_mem *mem,
                                 const struct spi_mem_op *op)
 {

diff --git a/drivers/spi/spi-mxic.c b/drivers/spi/spi-mxic.c
index 9952fcd..6bec0a7 100644 (file)
--- a/drivers/spi/spi-mxic.c
+++ b/drivers/spi/spi-mxic.c
@@ -335,8 +335,6 @@ static int mxic_spi_data_xfer(struct mxic_spi *mxic, const void *txbuf,
 static bool mxic_spi_mem_supports_op(struct spi_mem *mem,
                                     const struct spi_mem_op *op)
 {
-       bool all_false;
-
        if (op->data.buswidth > 8 || op->addr.buswidth > 8 ||
            op->dummy.buswidth > 8 || op->cmd.buswidth > 8)
                return false;
@@ -348,13 +346,7 @@ static bool mxic_spi_mem_supports_op(struct spi_mem *mem,
        if (op->addr.nbytes > 7)
                return false;
 
-       all_false = !op->cmd.dtr && !op->addr.dtr && !op->dummy.dtr &&
-                   !op->data.dtr;
-
-       if (all_false)
-               return spi_mem_default_supports_op(mem, op);
-       else
-               return spi_mem_dtr_supports_op(mem, op);
+       return spi_mem_default_supports_op(mem, op);
 }
 
 static int mxic_spi_mem_exec_op(struct spi_mem *mem,

diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 38e5d45..4a1bfe6 100644 (file)
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -330,10 +330,6 @@ void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
 
 bool spi_mem_default_supports_op(struct spi_mem *mem,
                                 const struct spi_mem_op *op);
-
-bool spi_mem_dtr_supports_op(struct spi_mem *mem,
-                            const struct spi_mem_op *op);
-
 #else
 static inline int
 spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
@@ -356,13 +352,6 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 {
        return false;
 }
-
-static inline
-bool spi_mem_dtr_supports_op(struct spi_mem *mem,
-                            const struct spi_mem_op *op)
-{
-       return false;
-}
 #endif /* CONFIG_SPI_MEM */
 
 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);