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[v9,04/19] spi: spi-mtk-nor: reject DTR ops

Message ID 20200525091544.17270-5-p.yadav@ti.com
State Superseded
Delegated to: Ambarus Tudor
Headers show
Series mtd: spi-nor: add xSPI Octal DTR support | expand

Commit Message

Pratyush Yadav May 25, 2020, 9:15 a.m. UTC 
Double Transfer Rate (DTR) ops are added in spi-mem. But this controller
doesn't support DTR transactions. Since we don't use the default
supports_op(), which rejects all DTR ops, do that explicitly in our
supports_op().

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/spi/spi-mtk-nor.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c
index d5f393871619..b08d8e9a8ee9 100644
--- a/drivers/spi/spi-mtk-nor.c
+++ b/drivers/spi/spi-mtk-nor.c
@@ -211,6 +211,12 @@  static bool mtk_nor_supports_op(struct spi_mem *mem,
 	if (op->cmd.buswidth != 1)
 		return false;
 
+	/* DTR ops not supported. */
+	if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
+		return false;
+	if (op->cmd.nbytes != 1)
+		return false;
+
 	if ((op->addr.nbytes == 3) || (op->addr.nbytes == 4)) {
 		if ((op->data.dir == SPI_MEM_DATA_IN) && mtk_nor_match_read(op))
 			return true;