From: Mark Brown <broonie@kernel.org>
To: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org, linux-spi@vger.kernel.org,
linaro-kernel@lists.linaro.org,
"Łukasz Czerwiński" <l.czerwinski@samsung.com>,
"Mark Brown" <broonie@linaro.org>
Subject: [PATCH 6/6] spi/s3c64xx: Enable GPIO /CS prior to starting hardware
Date: Fri, 27 Sep 2013 20:44:09 +0100 [thread overview]
Message-ID: <1380311049-973-6-git-send-email-broonie@kernel.org> (raw)
In-Reply-To: <1380311049-973-1-git-send-email-broonie@kernel.org>
From: Mark Brown <broonie@linaro.org>
To help with bisection of future refactoring to share more of the code for
handling a spi_message pull the enabling of GPIO based /CS prior to all
the hardware setup for starting a transfer.
Signed-off-by: Mark Brown <broonie@linaro.org>
---
drivers/spi/spi-s3c64xx.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 2ab96fb..e631232 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -906,6 +906,9 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
s3c64xx_spi_config(sdd);
}
+ /* Slave Select */
+ enable_cs(sdd, spi);
+
/* Polling method for xfers not bigger than FIFO capacity */
use_dma = 0;
if (!is_polling(sdd) &&
@@ -921,9 +924,6 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
enable_datapath(sdd, spi, xfer, use_dma);
- /* Slave Select */
- enable_cs(sdd, spi);
-
/* Start the signals */
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
--
1.8.4.rc3
prev parent reply other threads:[~2013-09-27 19:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 19:44 [PATCH 1/6] spi/s3c64xx: Flush FIFOs prior to cleaning up transfer Mark Brown
2013-09-27 19:44 ` [PATCH 2/6] spi/s3c64xx: Check that clock enables succeed on runtime resume Mark Brown
2013-09-27 19:44 ` [PATCH 3/6] spi/s3c64xx: Remove unused gpios field from driver data Mark Brown
2013-09-27 19:44 ` [PATCH 4/6] spi/s3c64xx: Use core cs_gpio field Mark Brown
2013-09-27 19:44 ` [PATCH 5/6] spi/s3c64xx: Factor transfer start out of enable/disable_cs() Mark Brown
2013-09-27 19:44 ` Mark Brown [this message]
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