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
   7 struct qcom_smd;
   8 struct qcom_smd_channel;
   9 struct qcom_smd_lookup;
  10
  11 /**
  12  * struct qcom_smd_device - smd device struct
  13  * @dev:        the device struct
  14  * @channel:    handle to the smd channel for this device
  15  */
  16 struct qcom_smd_device {
  17         struct device dev;
  18         struct qcom_smd_channel *channel;
  19 };
  20
  21 /**
  22  * struct qcom_smd_driver - smd driver struct
  23  * @driver:     underlying device driver
  24  * @probe:      invoked when the smd channel is found
  25  * @remove:     invoked when the smd channel is closed
  26  * @callback:   invoked when an inbound message is received on the channel,
  27  *              should return 0 on success or -EBUSY if the data cannot be
  28  *              consumed at this time
  29  */
  30 struct qcom_smd_driver {
  31         struct device_driver driver;
  32         int (*probe)(struct qcom_smd_device *dev);
  33         void (*remove)(struct qcom_smd_device *dev);
  34         int (*callback)(struct qcom_smd_device *, const void *, size_t);
  35 };
  36
  37 int qcom_smd_driver_register(struct qcom_smd_driver *drv);
  38 void qcom_smd_driver_unregister(struct qcom_smd_driver *drv);
  39
  40 #define module_qcom_smd_driver(__smd_driver) \
  41         module_driver(__smd_driver, qcom_smd_driver_register, \
  42                       qcom_smd_driver_unregister)
  43
  44 int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len);
  45
  46 #endif