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

Message ID 1398707877-22596-4-git-send-email-pawel.moll@arm.com
State Accepted
Commit 29f9b6cf7bff6a118130163c848811e14f8022da
Headers show

Commit Message

Pawel Moll April 28, 2014, 5:57 p.m. UTC 
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@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.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
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Patch

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