greybus: isolate greybus module code

Define new source files "module.h" and "module.c" to separate the
definitions of the Greybus module abstraction from other code.

Rename "greybus_module" to be "gb_module", for brevity.  Do the same
for a few other symbols with "greybus_module" in their names.  A few
(like greybus_module_id) are more visible outside this kernel module
so we'll keep their names more descriptive.

Add a definition for U8_MAX in "kernel_ver.h" (it appeared in 3.14).

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/drivers/staging/greybus/module.h b/drivers/staging/greybus/module.h
new file mode 100644
index 000000000000..0d0f19f9b9fc
--- /dev/null
+++ b/drivers/staging/greybus/module.h
@@ -0,0 +1,57 @@
+/*
+ * Greybus modules
+ *
+ * Copyright 2014 Google Inc.
+ *
+ * Released under the GPLv2 only.
+ */
+
+#ifndef __MODULE_H
+#define __MODULE_H
+
+/* Increase these values if needed */
+#define MAX_CPORTS_PER_MODULE	10
+#define MAX_STRINGS_PER_MODULE	10
+
+struct gb_module {
+	struct device dev;
+
+	struct list_head links;	/* greybus_host_device->modules */
+	u8 module_id;		/* Physical location within the Endo */
+
+	struct greybus_descriptor_module module;
+	int num_cports;
+	int num_strings;
+	u16 cport_ids[MAX_CPORTS_PER_MODULE];
+	struct gmod_string *string[MAX_STRINGS_PER_MODULE];
+
+	struct greybus_host_device *hd;
+
+	struct gb_i2c_device *gb_i2c_dev;
+	struct gb_gpio_device *gb_gpio_dev;
+	struct gb_sdio_host *gb_sdio_host;
+	struct gb_tty *gb_tty;
+	struct gb_usb_device *gb_usb_dev;
+	struct gb_battery *gb_battery;
+};
+#define to_gb_module(d) container_of(d, struct gb_module, dev)
+
+static inline void
+gb_module_set_drvdata(struct gb_module *gmod, void *data)
+{
+	dev_set_drvdata(&gmod->dev, data);
+}
+
+static inline void *gb_module_get_drvdata(struct gb_module *gmod)
+{
+	return dev_get_drvdata(&gmod->dev);
+}
+
+const struct greybus_module_id *gb_module_match_id(struct gb_module *gmod,
+					const struct greybus_module_id *id);
+
+struct gb_module *gb_module_create(struct greybus_host_device *hd,
+					u8 module_id);
+void gb_module_destroy(struct gb_module *module);
+
+#endif /* __MODULE_H */