Add a helper to clone the platform data via kmemdup() and set it into
the specified device and report any problems via printk().
This is intended to replace a number of sites in the Samsung kernel
where the same thing is being repeated in specific platform setting
code. See next patches for replacements.
Signed-off-by: Ben Dooks <ben-li...@fluff.org>
---
arch/arm/plat-samsung/Makefile | 2 +
arch/arm/plat-samsung/include/plat/devs.h | 12 +++++++++
arch/arm/plat-samsung/platformdata.c | 37 +++++++++++++++++++++++++++++
3 files changed, 51 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-samsung/platformdata.c
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index b1d82cc..228c2ad 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -30,6 +30,8 @@ obj-$(CONFIG_S3C_ADC) += adc.o
# devices
+obj-y += platformdata.o
+
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
obj-$(CONFIG_S3C_DEV_HSMMC2) += dev-hsmmc2.o
diff --git a/arch/arm/plat-samsung/include/plat/devs.h
b/arch/arm/plat-samsung/include/plat/devs.h
index e6144e4..6760999 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -108,3 +108,15 @@ extern struct platform_device s3c_device_camif;
extern struct platform_device s3c_device_ac97;
#endif
+
+/**
+ * s3c_set_platdata() - helper for setting platform data
+ * @pd: The default platform data for this device.
+ * @pdsize: The size of the platform data.
+ * @pdev: Pointer to the device to fill in.
+ *
+ * This helper replaces a number of calls that copy and then set the
+ * platform data of the device.
+ */
+extern void *s3c_set_platdata(void *pd, size_t pdsize,
+ struct platform_device *pdev);
diff --git a/arch/arm/plat-samsung/platformdata.c
b/arch/arm/plat-samsung/platformdata.c
new file mode 100644
index 0000000..4a05efb
--- /dev/null
+++ b/arch/arm/plat-samsung/platformdata.c
@@ -0,0 +1,37 @@
+/* linux/arch/arm/plat-samsung/platformdata.c
+ *
+ * Copyright 2010 Ben Dooks <ben-li...@fluff.org>
+ *
+ * Helper for platform data setting
+ *
+ * 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/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+
+#include <plat/devs.h>
+
+void __init *s3c_set_platdata(void *pd, size_t pdsize,
+ struct platform_device *pdev)
+{
+ void *npd;
+
+ if (!pd) {
+ /* too early to use dev_name(), may not be registered */
+ printk(KERN_ERR "%s: no platform data supplied\n", pdev->name);
+ return NULL;
+ }
+
+ npd = kmemdup(pd, pdsize, GFP_KERNEL);
+ if (!npd) {
+ printk(KERN_ERR "%s: cannot clone platform data\n", pdev->name);
+ return NULL;
+ }
+
+ pdev->dev.platform_data = npd;
+ return npd;
+}
--
1.6.3.3
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