LXR linux/include/linux/soc/qcom/smd.h

   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