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From: Pratyush Yadav
To: Tudor Ambarus , Miquel Raynal
, Richard Weinberger , Vignesh
Raghavendra , Mark Brown ,
Nicolas Ferre , Alexandre Belloni
, Ludovic Desroches
,
Matthias Brugger ,
Michal Simek ,
, ,
, ,
Subject: [PATCH v8 03/19] spi: atmel-quadspi: reject DTR ops
Date: Sat, 23 May 2020 04:10:26 +0530
Message-ID: <20200522224042.29970-4-p.yadav@ti.com>
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Pratyush Yadav
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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
---
drivers/spi/atmel-quadspi.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index cb44d1e169aa..a898755fb41e 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -285,6 +285,12 @@ static bool atmel_qspi_supports_op(struct spi_mem *mem,
op->dummy.nbytes == 0)
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;
+
return true;
}