linux-kernel - [PATCH 03/10] mfd: syscon: Add platform data with a regmap config name

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Message-Id: <1398707877-22596-4-git-send-email-pawel.moll@arm.com>
Date:	Mon, 28 Apr 2014 18:57:50 +0100
From:	Pawel Moll <pawel.moll@....com>
To:	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Russell King <linux@....linux.org.uk>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	arm@...nel.org, Pawel Moll <pawel.moll@....com>
Subject: [PATCH 03/10] mfd: syscon: Add platform data with a regmap config name

Define syscon platform data structure that can be used
to define a regmap config name. This is particularly useful
in the regmap debugfs when there is more than one syscon
device registered, to distinguish the register blocks.

Signed-off-by: Pawel Moll <pawel.moll@....com>
Acked-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/mfd/syscon.c                 | 4 ++++
 include/linux/platform_data/syscon.h | 8 ++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 include/linux/platform_data/syscon.h

diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index dbea55d..e2a04bb 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -18,6 +18,7 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
+#include <linux/platform_data/syscon.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/mfd/syscon.h>
@@ -119,6 +120,7 @@ static struct regmap_config syscon_regmap_config = {
 static int syscon_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct syscon_platform_data *pdata = dev_get_platdata(dev);
 	struct syscon *syscon;
 	struct resource *res;
 	void __iomem *base;
@@ -136,6 +138,8 @@ static int syscon_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	syscon_regmap_config.max_register = res->end - res->start - 3;
+	if (pdata)
+		syscon_regmap_config.name = pdata->label;
 	syscon->regmap = devm_regmap_init_mmio(dev, base,
 					&syscon_regmap_config);
 	if (IS_ERR(syscon->regmap)) {
diff --git a/include/linux/platform_data/syscon.h b/include/linux/platform_data/syscon.h
new file mode 100644
index 0000000..2354c6f
--- /dev/null
+++ b/include/linux/platform_data/syscon.h
@@ -0,0 +1,8 @@
+#ifndef PLATFORM_DATA_SYSCON_H
+#define PLATFORM_DATA_SYSCON_H
+
+struct syscon_platform_data {
+	const char *label;
+};
+
+#endif
-- 
1.9.1

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