dm: sandbox: Add a simple driver to test of-platdata

Add a driver which uses of-platdata to obtain its platform data. This can
be used to test the feature in sandbox. It displays the contents of its
platform data.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/misc/Makefile

@@ -35,6 +35,11 @@ obj-$(CONFIG_SMSC_LPC47M) += smsc_lpc47m.o
 obj-$(CONFIG_SMSC_SIO1007) += smsc_sio1007.o
 obj-$(CONFIG_STATUS_LED) += status_led.o
 obj-$(CONFIG_SANDBOX) += swap_case.o
+ifdef CONFIG_SPL_OF_PLATDATA
+ifdef CONFIG_SPL_BUILD
+obj-$(CONFIG_SANDBOX) += spltest_sandbox.o
+endif
+endif
 obj-$(CONFIG_SANDBOX) += syscon_sandbox.o
 obj-$(CONFIG_TWL4030_LED) += twl4030_led.o
 obj-$(CONFIG_FSL_IFC) += fsl_ifc.o

drivers/misc/spltest_sandbox.c

+/*
+ * Copyright (c) 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int sandbox_spl_probe(struct udevice *dev)
+{
+	struct dtd_sandbox_spl_test *plat = dev_get_platdata(dev);
+	int i;
+
+	printf("of-platdata probe:\n");
+	printf("bool %d\n", plat->boolval);
+
+	printf("byte %02x\n", plat->byteval);
+	printf("bytearray");
+	for (i = 0; i < sizeof(plat->bytearray); i++)
+		printf(" %02x", plat->bytearray[i]);
+	printf("\n");
+
+	printf("int %d\n", plat->intval);
+	printf("intarray");
+	for (i = 0; i < ARRAY_SIZE(plat->intarray); i++)
+		printf(" %d", plat->intarray[i]);
+	printf("\n");
+
+	printf("longbytearray");
+	for (i = 0; i < sizeof(plat->longbytearray); i++)
+		printf(" %02x", plat->longbytearray[i]);
+	printf("\n");
+
+	printf("string %s\n", plat->stringval);
+	printf("stringarray");
+	for (i = 0; i < ARRAY_SIZE(plat->stringarray); i++)
+		printf(" \"%s\"", plat->stringarray[i]);
+	printf("\n");
+
+	return 0;
+}
+
+U_BOOT_DRIVER(sandbox_spl_test) = {
+	.name	= "sandbox_spl_test",
+	.id	= UCLASS_MISC,
+	.flags	= DM_FLAG_PRE_RELOC,
+	.probe	= sandbox_spl_probe,
+};