Rename reset to sysreset

The current reset API implements a method to reset the entire system.
In the near future, I'd like to introduce code that implements the device
tree reset bindings; i.e. the equivalent of the Linux kernel's reset API.
This controls resets to individual HW blocks or external chips with reset
signals. It doesn't make sense to merge the two APIs into one since they
have different semantic purposes. Resolve the naming conflict by renaming
the existing reset API to sysreset instead, so the new reset API can be
called just reset.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 101 insertions, 0 deletions

diff --git a/drivers/misc/sysreset_sandbox.c b/drivers/misc/sysreset_sandbox.c
new file mode 100644
index 0000000000..7ae7f386ee
--- /dev/null
+++ b/drivers/misc/sysreset_sandbox.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/state.h>
+#include <asm/test.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int sandbox_warm_sysreset_request(struct udevice *dev,
+					 enum sysreset_t type)
+{
+	struct sandbox_state *state = state_get_current();
+
+	switch (type) {
+	case SYSRESET_WARM:
+		state->last_sysreset = type;
+		break;
+	default:
+		return -ENOSYS;
+	}
+	if (!state->sysreset_allowed[type])
+		return -EACCES;
+
+	return -EINPROGRESS;
+}
+
+static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+	struct sandbox_state *state = state_get_current();
+
+	/*
+	 * If we have a device tree, the device we created from platform data
+	 * (see the U_BOOT_DEVICE() declaration below) should not do anything.
+	 * If we are that device, return an error.
+	 */
+	if (state->fdt_fname && dev->of_offset == -1)
+		return -ENODEV;
+
+	switch (type) {
+	case SYSRESET_COLD:
+		state->last_sysreset = type;
+		break;
+	case SYSRESET_POWER:
+		state->last_sysreset = type;
+		if (!state->sysreset_allowed[type])
+			return -EACCES;
+		sandbox_exit();
+		break;
+	default:
+		return -ENOSYS;
+	}
+	if (!state->sysreset_allowed[type])
+		return -EACCES;
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops sandbox_sysreset_ops = {
+	.request	= sandbox_sysreset_request,
+};
+
+static const struct udevice_id sandbox_sysreset_ids[] = {
+	{ .compatible = "sandbox,reset" },
+	{ }
+};
+
+U_BOOT_DRIVER(sysreset_sandbox) = {
+	.name		= "sysreset_sandbox",
+	.id		= UCLASS_SYSRESET,
+	.of_match	= sandbox_sysreset_ids,
+	.ops		= &sandbox_sysreset_ops,
+};
+
+static struct sysreset_ops sandbox_warm_sysreset_ops = {
+	.request	= sandbox_warm_sysreset_request,
+};
+
+static const struct udevice_id sandbox_warm_sysreset_ids[] = {
+	{ .compatible = "sandbox,warm-reset" },
+	{ }
+};
+
+U_BOOT_DRIVER(warm_sysreset_sandbox) = {
+	.name		= "warm_sysreset_sandbox",
+	.id		= UCLASS_SYSRESET,
+	.of_match	= sandbox_warm_sysreset_ids,
+	.ops		= &sandbox_warm_sysreset_ops,
+};
+
+/* This is here in case we don't have a device tree */
+U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
+	.name = "sysreset_sandbox",
+};