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authorBen Dooks <ben-linux@fluff.org>2010-06-10 07:57:15 +0400
committerKukjin Kim <kgene.kim@samsung.com>2010-08-05 13:32:49 +0400
commit3911dab8ad582fd4db5e79eda5320c37c3dfb9bb (patch)
treec2a80e4b4814512d289f4e39fb489a4958067d39 /arch/arm
parent5db2bc8a114b866f351a510dab6945ab20567055 (diff)
downloadlinux-3911dab8ad582fd4db5e79eda5320c37c3dfb9bb.tar.xz
ARM: SAMSUNG: Add helper to clone and set platform data
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-linux@fluff.org> [kgene.kim@samsung.com: This is for building test] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/plat-samsung/Makefile2
-rw-r--r--arch/arm/plat-samsung/include/plat/devs.h12
-rw-r--r--arch/arm/plat-samsung/platformdata.c37
3 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index b1d82cc5e716..228c2add1e2e 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 e6144e4b9118..676099999de4 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 000000000000..7cf2e1e3b20f
--- /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-linux <at> 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;
+}