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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] spi: introduce spi_get_master
Date: Fri,  2 Nov 2012 17:17:39 +0100	[thread overview]
Message-ID: <1351873060-27968-1-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <20121102160659.GS29599@game.jcrosoft.org>

so we can request a master usefull for the spi command

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 drivers/spi/spi.c |   12 ++++++++++++
 include/spi/spi.h |    2 ++
 2 files changed, 14 insertions(+)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 44040e5..6a5bd6d 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -219,6 +219,18 @@ int spi_register_master(struct spi_master *master)
 }
 EXPORT_SYMBOL(spi_register_master);
 
+struct spi_master *spi_get_master(int bus)
+{
+	struct spi_master* m;
+
+	list_for_each_entry(m, &spi_master_list, list) {
+		if (m->bus_num == bus)
+			return m;
+	}
+
+	return NULL;
+}
+
 int spi_sync(struct spi_device *spi, struct spi_message *message)
 {
 	return spi->master->transfer(spi, message);
diff --git a/include/spi/spi.h b/include/spi/spi.h
index 1773ca2..d6570a4 100644
--- a/include/spi/spi.h
+++ b/include/spi/spi.h
@@ -432,6 +432,8 @@ static inline ssize_t spi_w8r8(struct spi_device *spi, u8 cmd)
 
 extern struct bus_type spi_bus;
 
+struct spi_master *spi_get_master(int bus);
+
 static inline int spi_register_driver(struct driver_d *drv)
 {
 	drv->bus = &spi_bus;
-- 
1.7.10.4


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  reply	other threads:[~2012-11-02 16:19 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-02 16:06 [PATCH 0/2] add spi command Jean-Christophe PLAGNIOL-VILLARD
2012-11-02 16:17 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-11-02 16:17   ` [PATCH 2/2] introduce " Jean-Christophe PLAGNIOL-VILLARD
2012-11-02 16:26     ` Alexander Shiyan
2012-11-02 16:45       ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-03 21:39     ` Sascha Hauer
2012-11-02 19:01 ` [PATCH 0/2] add " Sascha Hauer
2012-11-03  7:36   ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-04  8:54 [PATCH 0/2 v2] " Jean-Christophe PLAGNIOL-VILLARD
2012-11-04  8:59 ` [PATCH 1/2] spi: introduce spi_get_master Jean-Christophe PLAGNIOL-VILLARD
2012-11-05  9:29 [PATCH 0/2 v3] add spi command Jean-Christophe PLAGNIOL-VILLARD
2012-11-05  9:36 ` [PATCH 1/2] spi: introduce spi_get_master Jean-Christophe PLAGNIOL-VILLARD
2012-11-05 18:21 [PATCH 0/2 v4] add spi command Jean-Christophe PLAGNIOL-VILLARD
2012-11-05 18:30 ` [PATCH 1/2] spi: introduce spi_get_master Jean-Christophe PLAGNIOL-VILLARD

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