1#ifndef __QCOM_SMD_H__
2#define __QCOM_SMD_H__
3
4#include <linux/device.h>
5#include <linux/mod_devicetable.h>
6
7struct qcom_smd;
8struct qcom_smd_channel;
9struct qcom_smd_lookup;
10
11/**
12 * struct qcom_smd_id - struct used for matching a smd device
13 * @name:	name of the channel
14 */
15struct qcom_smd_id {
16	char name[20];
17};
18
19/**
20 * struct qcom_smd_device - smd device struct
21 * @dev:	the device struct
22 * @channel:	handle to the smd channel for this device
23 */
24struct qcom_smd_device {
25	struct device dev;
26	struct qcom_smd_channel *channel;
27};
28
29/**
30 * struct qcom_smd_driver - smd driver struct
31 * @driver:	underlying device driver
32 * @smd_match_table: static channel match table
33 * @probe:	invoked when the smd channel is found
34 * @remove:	invoked when the smd channel is closed
35 * @callback:	invoked when an inbound message is received on the channel,
36 *		should return 0 on success or -EBUSY if the data cannot be
37 *		consumed at this time
38 */
39struct qcom_smd_driver {
40	struct device_driver driver;
41	const struct qcom_smd_id *smd_match_table;
42
43	int (*probe)(struct qcom_smd_device *dev);
44	void (*remove)(struct qcom_smd_device *dev);
45	int (*callback)(struct qcom_smd_device *, const void *, size_t);
46};
47
48int qcom_smd_driver_register(struct qcom_smd_driver *drv);
49void qcom_smd_driver_unregister(struct qcom_smd_driver *drv);
50
51#define module_qcom_smd_driver(__smd_driver) \
52	module_driver(__smd_driver, qcom_smd_driver_register, \
53		      qcom_smd_driver_unregister)
54
55int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len);
56
57#endif
58