test: Add tests for misc uclass

Add a set of tests for the misc uclass.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/sandbox/dts/test.dts

@@ -285,6 +285,10 @@
 		mbox-names = "other", "test";
 	};
 
+	misc-test {
+		compatible = "sandbox,misc_sandbox";
+	};
+
 	mmc2 {
 		compatible = "sandbox,mmc";
 	};

drivers/misc/Makefile

@@ -39,7 +39,7 @@ ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_SANDBOX) += spltest_sandbox.o
 endif
 endif
-obj-$(CONFIG_SANDBOX) += syscon_sandbox.o
+obj-$(CONFIG_SANDBOX) += syscon_sandbox.o misc_sandbox.o
 obj-$(CONFIG_TEGRA_CAR) += tegra_car.o
 obj-$(CONFIG_TEGRA186_BPMP) += tegra186_bpmp.o
 obj-$(CONFIG_TWL4030_LED) += twl4030_led.o

drivers/misc/misc_sandbox.c

@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018
+ * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <misc.h>
+
+struct misc_sandbox_priv {
+	u8 mem[128];
+	ulong last_ioctl;
+	bool enabled;
+};
+
+int misc_sandbox_read(struct udevice *dev, int offset, void *buf, int size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	memcpy(buf, priv->mem + offset, size);
+
+	return 0;
+}
+
+int misc_sandbox_write(struct udevice *dev, int offset, const void *buf,
+		       int size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	memcpy(priv->mem + offset, buf, size);
+
+	return 0;
+}
+
+int misc_sandbox_ioctl(struct udevice *dev, unsigned long request, void *buf)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->last_ioctl = request;
+
+	return 0;
+}
+
+int misc_sandbox_call(struct udevice *dev, int msgid, void *tx_msg,
+		      int tx_size, void *rx_msg, int rx_size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	if (msgid == 0) {
+		int num = *(int *)tx_msg;
+
+		switch (num) {
+		case 0:
+			strncpy(rx_msg, "Zero", rx_size);
+			break;
+		case 1:
+			strncpy(rx_msg, "One", rx_size);
+			break;
+		case 2:
+			strncpy(rx_msg, "Two", rx_size);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (msgid == 1) {
+		int num = *(int *)tx_msg;
+
+		switch (num) {
+		case 0:
+			strncpy(rx_msg, "Forty", rx_size);
+			break;
+		case 1:
+			strncpy(rx_msg, "Forty-one", rx_size);
+			break;
+		case 2:
+			strncpy(rx_msg, "Forty-two", rx_size);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (msgid == 2)
+		memcpy(rx_msg, &priv->last_ioctl, sizeof(priv->last_ioctl));
+
+	if (msgid == 3)
+		memcpy(rx_msg, &priv->enabled, sizeof(priv->enabled));
+
+	return 0;
+}
+
+int misc_sandbox_set_enabled(struct udevice *dev, bool val)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->enabled = !priv->enabled;
+
+	return 0;
+}
+
+static const struct misc_ops misc_sandbox_ops = {
+	.read = misc_sandbox_read,
+	.write = misc_sandbox_write,
+	.ioctl = misc_sandbox_ioctl,
+	.call = misc_sandbox_call,
+	.set_enabled = misc_sandbox_set_enabled,
+};
+
+int misc_sandbox_probe(struct udevice *dev)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->enabled = true;
+
+	return 0;
+}
+
+static const struct udevice_id misc_sandbox_ids[] = {
+	{ .compatible = "sandbox,misc_sandbox" },
+	{ }
+};
+
+U_BOOT_DRIVER(misc_sandbox) = {
+	.name           = "misc_sandbox",
+	.id             = UCLASS_MISC,
+	.ops		= &misc_sandbox_ops,
+	.of_match       = misc_sandbox_ids,
+	.probe          = misc_sandbox_probe,
+	.priv_auto_alloc_size = sizeof(struct misc_sandbox_priv),
+};

test/dm/Makefile

@@ -44,4 +44,5 @@ obj-$(CONFIG_DM_VIDEO) += video.o
 obj-$(CONFIG_ADC) += adc.o
 obj-$(CONFIG_SPMI) += spmi.o
 obj-$(CONFIG_WDT) += wdt.o
+obj-$(CONFIG_MISC) += misc.o
 endif

test/dm/misc.c

@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018
+ * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <misc.h>
+#include <test/ut.h>
+
+static int dm_test_misc(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	u8 buf[16];
+	int id;
+	ulong last_ioctl;
+	bool enabled;
+
+	ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "misc-test", &dev));
+
+	/* Read / write tests */
+	ut_assertok(misc_write(dev, 0, "TEST", 4));
+	ut_assertok(misc_write(dev, 4, "WRITE", 5));
+	ut_assertok(misc_read(dev, 0, buf, 9));
+
+	ut_assertok(memcmp(buf, "TESTWRITE", 9));
+
+	/* Call tests */
+
+	id = 0;
+	ut_assertok(misc_call(dev, 0, &id, 4, buf, 16));
+	ut_assertok(memcmp(buf, "Zero", 4));
+
+	id = 2;
+	ut_assertok(misc_call(dev, 0, &id, 4, buf, 16));
+	ut_assertok(memcmp(buf, "Two", 3));
+
+	ut_assertok(misc_call(dev, 1, &id, 4, buf, 16));
+	ut_assertok(memcmp(buf, "Forty-two", 9));
+
+	id = 1;
+	ut_assertok(misc_call(dev, 1, &id, 4, buf, 16));
+	ut_assertok(memcmp(buf, "Forty-one", 9));
+
+	/* IOCTL tests */
+
+	ut_assertok(misc_ioctl(dev, 6, NULL));
+	/* Read back last issued ioctl */
+	ut_assertok(misc_call(dev, 2, NULL, 0, &last_ioctl,
+			      sizeof(last_ioctl)));
+	ut_asserteq(6, last_ioctl)
+
+	ut_assertok(misc_ioctl(dev, 23, NULL));
+	/* Read back last issued ioctl */
+	ut_assertok(misc_call(dev, 2, NULL, 0, &last_ioctl,
+			      sizeof(last_ioctl)));
+	ut_asserteq(23, last_ioctl)
+
+	/* Enable / disable tests */
+
+	/* Read back enable/disable status */
+	ut_assertok(misc_call(dev, 3, NULL, 0, &enabled,
+			      sizeof(enabled)));
+	ut_asserteq(true, enabled);
+
+	ut_assertok(misc_set_enabled(dev, false));
+	/* Read back enable/disable status */
+	ut_assertok(misc_call(dev, 3, NULL, 0, &enabled,
+			      sizeof(enabled)));
+	ut_asserteq(false, enabled);
+
+	ut_assertok(misc_set_enabled(dev, true));
+	/* Read back enable/disable status */
+	ut_assertok(misc_call(dev, 3, NULL, 0, &enabled,
+			      sizeof(enabled)));
+	ut_asserteq(true, enabled);
+
+	return 0;
+}
+
+DM_TEST(dm_test_misc, DM_TESTF_SCAN_FDT);