From: Russell King <rmk+kernel@armlinux.org.uk>
To: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org,
linux-mediatek@lists.infradead.org,
linux-rockchip@lists.infradead.org
Cc: Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Grant Likely <grant.likely@linaro.org>
Subject: [PATCH v2 1/3] of: add common OF-based component functionality
Date: Fri, 03 Jun 2016 15:21:19 +0100 [thread overview]
Message-ID: <E1b8pyR-0005OJ-V3@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20160603141548.GC1041@n2100.armlinux.org.uk>
Add common OF-based component functionality for matching devices by
device node, and releasing the device node at the appropraite time.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
drivers/of/Makefile | 2 +-
drivers/of/of_component.c | 41 +++++++++++++++++++++++++++++++++++++++++
include/linux/of_component.h | 14 ++++++++++++++
3 files changed, 56 insertions(+), 1 deletion(-)
create mode 100644 drivers/of/of_component.c
create mode 100644 include/linux/of_component.h
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index d7efd9d458aa..6a4a5e2c0839 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,4 +1,4 @@
-obj-y = base.o device.o platform.o
+obj-y = base.o of_component.o device.o platform.o
obj-$(CONFIG_OF_DYNAMIC) += dynamic.o
obj-$(CONFIG_OF_FLATTREE) += fdt.o
obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o
diff --git a/drivers/of/of_component.c b/drivers/of/of_component.c
new file mode 100644
index 000000000000..41e6e817d264
--- /dev/null
+++ b/drivers/of/of_component.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2016 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/component.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_component.h>
+#include <linux/of_graph.h>
+
+static void component_release_of(struct device *dev, void *data)
+{
+ of_node_put(data);
+}
+
+void component_match_add_of_compare(struct device *master,
+ struct component_match **matchptr,
+ int (*compare)(struct device *, void *), struct device_node *node)
+{
+ of_node_get(node);
+ component_match_add_release(master, matchptr, component_release_of,
+ compare, node);
+}
+EXPORT_SYMBOL_GPL(component_match_add_of_compare);
+
+static void component_compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+void component_match_add_of(struct device *master,
+ struct component_match **matchptr, struct device_node *node)
+{
+ of_node_get(node);
+ component_match_add_release(master, matchptr, component_release_of,
+ component_compare_of, node);
+}
+EXPORT_SYMBOL_GPL(component_match_add_of);
diff --git a/include/linux/of_component.h b/include/linux/of_component.h
new file mode 100644
index 000000000000..a8170ba3b786
--- /dev/null
+++ b/include/linux/of_component.h
@@ -0,0 +1,14 @@
+#ifndef __LINUX_COMPONENT_OF_H
+#define __LINUX_COMPONENT_OF_H
+
+struct component_match;
+struct device;
+struct device_node;
+
+void component_match_add_of_compare(struct device *master,
+ struct component_match **matchptr,
+ int (*compare)(struct device *, void *), struct device_node *node);
+void component_match_add_of(struct device *master,
+ struct component_match **matchptr, struct device_node *node);
+
+#endif
--
2.1.0
next parent reply other threads:[~2016-06-03 14:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160603141548.GC1041@n2100.armlinux.org.uk>
2016-06-03 14:21 ` Russell King [this message]
[not found] ` <E1b8pyR-0005OJ-V3-eh5Bv4kxaXIk46pC+1QYvQNdhmdF6hFW@public.gmane.org>
2016-06-03 15:29 ` [PATCH v2 1/3] of: add common OF-based component functionality Rob Herring
2016-06-03 15:36 ` Russell King - ARM Linux
2016-06-03 19:52 ` Rob Herring
2016-06-03 15:44 ` Thierry Reding
2016-06-03 16:11 ` Russell King - ARM Linux
2016-06-03 14:21 ` [PATCH v2 2/3] drm: convert DT component matching to component_match_add_release() Russell King
2016-06-03 15:10 ` Lucas Stach
[not found] ` <E1b8pyX-0005OP-2s-eh5Bv4kxaXIk46pC+1QYvQNdhmdF6hFW@public.gmane.org>
2016-06-07 13:39 ` Liviu Dudau
2016-06-07 14:26 ` Vincent ABRIOU
2016-06-03 14:21 ` [PATCH v2 3/3] iommu: " Russell King
2016-06-03 15:20 ` Matthias Brugger
2016-06-15 13:31 ` Joerg Roedel
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