[PATCH v3 2/5] sh: pfc: attach software node to the GPIO chip

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

With commit e5d527be7e69 ("gpio: swnode: don't use the swnode's name as
the key for GPIO lookup") gpiolib requires that firmware nodes from the
GPIO references to match firmware node in gpiochip structure.

Define a software node for the pfc gpiochip so that it can be referenced
by boards using static device properties.

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 arch/sh/include/cpu-common/cpu/pfc.h |  3 +++
 arch/sh/kernel/cpu/pfc.c             | 20 ++++++++++++++------
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/arch/sh/include/cpu-common/cpu/pfc.h b/arch/sh/include/cpu-common/cpu/pfc.h
index 879d2c9da537..d57e38c05bdb 100644
--- a/arch/sh/include/cpu-common/cpu/pfc.h
+++ b/arch/sh/include/cpu-common/cpu/pfc.h
@@ -11,6 +11,9 @@
 #include <linux/types.h>
 
 struct resource;
+struct software_node;
+
+extern const struct software_node pfc_gpiochip_node;
 
 int sh_pfc_register(const char *name,
 		    struct resource *resource, u32 num_resources);
diff --git a/arch/sh/kernel/cpu/pfc.c b/arch/sh/kernel/cpu/pfc.c
index 062056ede88d..5a8d804d607b 100644
--- a/arch/sh/kernel/cpu/pfc.c
+++ b/arch/sh/kernel/cpu/pfc.c
@@ -5,21 +5,29 @@
  * Copyright (C) 2012  Renesas Solutions Corp.
  */
 
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 #include <cpu/pfc.h>
 
-static struct platform_device sh_pfc_device = {
-	.id		= -1,
+const struct software_node pfc_gpiochip_node = {
+	.name = "sh-pfc",
 };
 
 int __init sh_pfc_register(const char *name,
 			   struct resource *resource, u32 num_resources)
 {
-	sh_pfc_device.name = name;
-	sh_pfc_device.num_resources = num_resources;
-	sh_pfc_device.resource = resource;
+	struct platform_device_info pdev_info = {
+		.name		= name,
+		.id		= PLATFORM_DEVID_NONE,
+		.res		= resource,
+		.num_res	= num_resources,
+		.swnode		= &pfc_gpiochip_node,
+	};
+	struct platform_device *pdev;
 
-	return platform_device_register(&sh_pfc_device);
+	pdev = platform_device_register_full(&pdev_info);
+	return PTR_ERR_OR_ZERO(pdev);
 }

-- 
2.56.0.rc1.315.gc6ed9934b7-goog