From: Fabien Parent <fparent-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
nsekhar-l0cyMroinI0@public.gmane.org,
ptitiano-rdvid1DuHRBWk0Htik3J/w@public.gmane.org,
khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org,
Fabien Parent <fparent-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
Subject: [PATCH 2/2] spi: davinci: enable DMA when channels are defined in DT
Date: Mon, 6 Feb 2017 15:57:08 +0100 [thread overview]
Message-ID: <20170206145708.24356-2-fparent@baylibre.com> (raw)
In-Reply-To: <20170206145708.24356-1-fparent-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
When booting with DT the SPI driver is always using
the SPI_IO_TYPE_INTR mode to transfer data even if DMA channels are
defined in the DT.
This commit changes the behaviour to select the SPI_IO_TYPE_DMA mode
if DMA channels are defined in the DT and will keep SPI_IO_TYPE_INTR
if the channels are not defined in it.
Signed-off-by: Fabien Parent <fparent-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
---
drivers/spi/spi-davinci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index cb80c1d3f86a..b73072ae8adb 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -389,6 +389,7 @@ static int davinci_spi_of_setup(struct spi_device *spi)
{
struct davinci_spi_config *spicfg = spi->controller_data;
struct device_node *np = spi->dev.of_node;
+ struct davinci_spi *dspi = spi_master_get_devdata(spi->master);
u32 prop;
if (spicfg == NULL && np) {
@@ -400,6 +401,9 @@ static int davinci_spi_of_setup(struct spi_device *spi)
if (!of_property_read_u32(np, "ti,spi-wdelay", &prop))
spicfg->wdelay = (u8)prop;
spi->controller_data = spicfg;
+
+ if (dspi->dma_rx && dspi->dma_tx)
+ spicfg->io_type = SPI_IO_TYPE_DMA;
}
return 0;
--
2.11.0
--
To unsubscribe from this list: send the line "unsubscribe linux-spi" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-02-06 14:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-06 14:57 [PATCH 1/2] spi: davinci: Use SPI framework to handle DMA mapping Fabien Parent
[not found] ` <20170206145708.24356-1-fparent-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2017-02-06 14:57 ` Fabien Parent [this message]
2017-03-07 14:22 ` Applied "spi: davinci: enable DMA when channels are defined in DT" to the spi tree Mark Brown
2017-03-08 10:35 ` Frode Isaksen
2017-03-08 12:43 ` Mark Brown
2017-03-10 10:24 ` Frode Isaksen
2017-03-13 16:43 ` Mark Brown
2017-02-06 16:48 ` [PATCH 1/2] spi: davinci: Use SPI framework to handle DMA mapping Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170206145708.24356-2-fparent@baylibre.com \
--to=fparent-rdvid1duhrbwk0htik3j/w@public.gmane.org \
--cc=broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=nsekhar-l0cyMroinI0@public.gmane.org \
--cc=ptitiano-rdvid1DuHRBWk0Htik3J/w@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).