From: Prahlad V <prahlad.eee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
vigneshr-l0cyMroinI0@public.gmane.org,
Prahlad V <prahlad.eee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [PATCH] spi: spi-ti-qspi: clear wlen field while setting word length.
Date: Sun, 10 Jul 2016 01:35:53 +0530 [thread overview]
Message-ID: <1468094753-8327-1-git-send-email-prahlad.eee@gmail.com> (raw)
When a word length of 1 byte is selected and writing data of length
more than QSPI_WLEN_MAX_BYTES, first MAX_BYTES will be transfered
and remaining will be transfered byte by byte. In that case wlen
field should be cleared before setting.
Signed-off-by: Prahlad V <prahlad.eee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
drivers/spi/spi-ti-qspi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index 29ea8d2..6c61f54 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -276,9 +276,9 @@ static int qspi_write_msg(struct ti_qspi *qspi, struct spi_transfer *t,
cmd |= QSPI_WLEN(QSPI_WLEN_MAX_BITS);
} else {
writeb(*txbuf, qspi->base + QSPI_SPI_DATA_REG);
- cmd = qspi->cmd | QSPI_WR_SNGL;
xfer_len = wlen;
- cmd |= QSPI_WLEN(wlen);
+ cmd = ((qspi->cmd & ~QSPI_WLEN_MASK) |
+ QSPI_WLEN(wlen));
}
break;
case 2:
--
2.5.5
--
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next reply other threads:[~2016-07-09 20:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-09 20:05 Prahlad V [this message]
[not found] ` <1468094753-8327-1-git-send-email-prahlad.eee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-07-11 5:07 ` [PATCH] spi: spi-ti-qspi: clear wlen field while setting word length Vignesh R
2016-07-11 8:04 ` prahlad venkata
2016-07-11 8:44 ` Vignesh R
[not found] ` <57835C62.7030704-l0cyMroinI0@public.gmane.org>
2016-07-11 9:06 ` prahlad venkata
2016-07-11 9:09 ` prahlad venkata
[not found] ` <CAFbo-qW1pK5RJOCY0b0Gz7JR+9170sjiZb90UEvqySLheZst3A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-07-11 9:15 ` Vignesh R
2016-07-11 9:19 ` prahlad venkata
2016-07-11 10:23 ` Vignesh R
2016-07-11 17:08 ` prahlad venkata
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