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From: Chris Bostic <christopher.lee.bostic@gmail.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.uk,
	gregkh@linuxfoundation.org, sre@kernel.org,
	mturquette@baylibre.com, geert+renesas@glider.be,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Jeremy Kerr <jk@ozlabs.org>,
	joel@jms.id.au, linux-kernel@vger.kernel.org, andrew@aj.id.au,
	alistair@popple.id.au, benh@kernel.crashing.org,
	Chris Bostic <cbostic@us.ibm.com>
Subject: [PATCH 03/16] drivers/fsi: add driver to device matches
Date: Tue,  6 Dec 2016 18:14:24 -0600	[thread overview]
Message-ID: <1481069677-53660-4-git-send-email-christopher.lee.bostic@gmail.com> (raw)
In-Reply-To: <1481069677-53660-1-git-send-email-christopher.lee.bostic@gmail.com>

From: Jeremy Kerr <jk@ozlabs.org>

Driver bind to devices based on the engine types & (optional) versions.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Chris Bostic <cbostic@us.ibm.com>
---
 drivers/fsi/fsi-core.c | 21 +++++++++++++++++++++
 include/linux/fsi.h    | 21 +++++++++++++++++++--
 2 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 3e45306..3d55bd5 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -19,8 +19,29 @@
 
 /* FSI core & Linux bus type definitions */
 
+static int fsi_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct fsi_device *fsi_dev = to_fsi_dev(dev);
+	struct fsi_driver *fsi_drv = to_fsi_drv(drv);
+	const struct fsi_device_id *id;
+
+	if (!fsi_drv->id_table)
+		return 0;
+
+	for (id = fsi_drv->id_table; id->engine_type; id++) {
+		if (id->engine_type != fsi_dev->engine_type)
+			continue;
+		if (id->version == FSI_VERSION_ANY ||
+				id->version == fsi_dev->version)
+			return 1;
+	}
+
+	return 0;
+}
+
 struct bus_type fsi_bus_type = {
 	.name		= "fsi",
+	.match		= fsi_bus_match,
 };
 EXPORT_SYMBOL_GPL(fsi_bus_type);
 
diff --git a/include/linux/fsi.h b/include/linux/fsi.h
index f73886a..273cbf6 100644
--- a/include/linux/fsi.h
+++ b/include/linux/fsi.h
@@ -18,11 +18,28 @@
 #include <linux/device.h>
 
 struct fsi_device {
-	struct device dev;
+	struct device		dev;
+	u8			engine_type;
+	u8			version;
 };
 
+struct fsi_device_id {
+	u8	engine_type;
+	u8	version;
+};
+
+#define FSI_VERSION_ANY		0
+
+#define FSI_DEVICE(t) \
+	.engine_type = (t), .version = FSI_VERSION_ANY,
+
+#define FSI_DEVICE_VERSIONED(t, v) \
+	.engine_type = (t), .version = (v),
+
+
 struct fsi_driver {
-	struct device_driver drv;
+	struct device_driver		drv;
+	const struct fsi_device_id	*id_table;
 };
 
 #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev)
-- 
1.8.2.2

  parent reply	other threads:[~2016-12-07  0:17 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-07  0:14 [PATCH 00/16] FSI device driver introduction Chris Bostic
2016-12-07  0:14 ` [PATCH 01/16] drivers/fsi: Add empty fsi bus definitions Chris Bostic
2016-12-07  0:14 ` [PATCH 02/16] drivers/fsi: Add device & driver definitions Chris Bostic
2016-12-07  0:14 ` Chris Bostic [this message]
2016-12-07  0:14 ` [PATCH 05/16] drivers/fsi: Add fake master driver Chris Bostic
2016-12-07 12:09   ` Mark Rutland
2016-12-07 23:27     ` Jeremy Kerr
2016-12-07  0:14 ` [PATCH 06/16] drivers/fsi: Add slave definition Chris Bostic
2016-12-07  0:14 ` [PATCH 07/16] drivers/fsi: Add empty master scan Chris Bostic
2016-12-07  0:14 ` [PATCH 10/16] drivers/fsi: scan slaves & register devices Chris Bostic
2016-12-07  0:14 ` [PATCH 13/16] drivers/fsi: Set slave SMODE to init communication Chris Bostic
2016-12-07  0:14 ` [PATCH 14/16] drivers/fsi: Add master unscan Chris Bostic
2016-12-07  9:31   ` Greg KH
2016-12-07  0:14 ` [PATCH 15/16] drivers/fsi: Add documentation for GPIO bindings Chris Bostic
2016-12-07 12:02   ` Mark Rutland
2016-12-07  0:14 ` [PATCH 16/16] drivers/fsi: Add GPIO based FSI master Chris Bostic
2016-12-09  4:12   ` Jeremy Kerr
2016-12-12 19:49     ` Christopher Bostic
2016-12-07  1:52 ` [PATCH 00/16] FSI device driver introduction Sebastian Reichel

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