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@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index dbea55de4397..e2a04bb8bc1e 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)) {