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authorSimon Glass <sjg@chromium.org>2014-02-26 15:59:23 -0700
committerTom Rini <trini@ti.com>2014-03-04 12:15:29 -0500
commit39f7611fecc55cbde02c8a84f7c12861abe31b53 (patch)
treefad8c2ae3ea79c6a1de35e94252d0a6d01191fe1 /drivers/demo/demo-simple.c
parent0681195977ce04347f7de8ba88d9ebba10cae6dc (diff)
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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>
Diffstat (limited to 'drivers/demo/demo-simple.c')
-rw-r--r--drivers/demo/demo-simple.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/demo/demo-simple.c b/drivers/demo/demo-simple.c
new file mode 100644
index 0000000..6ba8131
--- /dev/null
+++ b/drivers/demo/demo-simple.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * (C) Copyright 2012
+ * Pavel Herrmann <morpheus.ibis@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm-demo.h>
+#include <asm/io.h>
+
+static int simple_hello(struct device *dev, int ch)
+{
+ const struct dm_demo_pdata *pdata = dev_get_platdata(dev);
+
+ printf("Hello from %08x: %s %d\n", map_to_sysmem(dev), pdata->colour,
+ pdata->sides);
+
+ return 0;
+}
+
+static const struct demo_ops simple_ops = {
+ .hello = simple_hello,
+};
+
+static int demo_shape_ofdata_to_platdata(struct device *dev)
+{
+ /* Parse the data that is common with all demo devices */
+ return demo_parse_dt(dev);
+}
+
+static const struct device_id demo_shape_id[] = {
+ { "demo-simple", 0 },
+ { },
+};
+
+U_BOOT_DRIVER(demo_simple_drv) = {
+ .name = "demo_simple_drv",
+ .of_match = demo_shape_id,
+ .id = UCLASS_DEMO,
+ .ofdata_to_platdata = demo_shape_ofdata_to_platdata,
+ .ops = &simple_ops,
+ .platdata_auto_alloc_size = sizeof(struct dm_demo_pdata),
+};