dm: Add a demonstration/example driver
As an example of how to write a uclass and a driver, provide a demo version
of each, accessible through the 'demo' command.
To use these with driver model, define CONFIG_CMD_DEMO and CONFIG_DM_DEMO.
The two demo drivers are enabled with CONFIG_DM_DEMO_SIMPLE and
CONFIG_DM_DEMO_SHAPE.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
Signed-off-by: Viktor Křivák <viktor.krivak@gmail.com>
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index 8e034a7..1d11c40 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -21,7 +21,11 @@
#define CONFIG_BOOTSTAGE
#define CONFIG_BOOTSTAGE_REPORT
#define CONFIG_DM
+#define CONFIG_CMD_DEMO
#define CONFIG_CMD_DM
+#define CONFIG_DM_DEMO
+#define CONFIG_DM_DEMO_SIMPLE
+#define CONFIG_DM_DEMO_SHAPE
#define CONFIG_DM_TEST
/* Number of bits in a C 'long' on this architecture */
diff --git a/include/dm-demo.h b/include/dm-demo.h
new file mode 100644
index 0000000..6e38d3c
--- /dev/null
+++ b/include/dm-demo.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __DM_DEMO_H
+#define __DM_DEMO_H
+
+#include <dm.h>
+
+/**
+ * struct dm_demo_pdata - configuration data for demo instance
+ *
+ * @colour: Color of the demo
+ * @sides: Numbers of sides
+ * @default_char: Default ASCII character to output (65 = 'A')
+ */
+struct dm_demo_pdata {
+ const char *colour;
+ int sides;
+ int default_char;
+};
+
+struct demo_ops {
+ int (*hello)(struct device *dev, int ch);
+ int (*status)(struct device *dev, int *status);
+};
+
+int demo_hello(struct device *dev, int ch);
+int demo_status(struct device *dev, int *status);
+int demo_list(void);
+
+int demo_parse_dt(struct device *dev);
+
+#endif