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path: root/drivers/hid/intel-ish-hid/ishtp/bus.c
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Diffstat (limited to 'drivers/hid/intel-ish-hid/ishtp/bus.c')
-rw-r--r--drivers/hid/intel-ish-hid/ishtp/bus.c96
1 files changed, 92 insertions, 4 deletions
diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
index d5f4b6438d86..fb8ca12955b4 100644
--- a/drivers/hid/intel-ish-hid/ishtp/bus.c
+++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
@@ -171,6 +171,19 @@ struct ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev,
EXPORT_SYMBOL(ishtp_fw_cl_get_client);
/**
+ * ishtp_get_fw_client_id() - Get fw client id
+ *
+ * This interface is used to reset HW get FW client id.
+ *
+ * Return: firmware client id.
+ */
+int ishtp_get_fw_client_id(struct ishtp_fw_client *fw_client)
+{
+ return fw_client->client_id;
+}
+EXPORT_SYMBOL(ishtp_get_fw_client_id);
+
+/**
* ishtp_fw_cl_by_id() - return index to fw_clients for client_id
* @dev: the ishtp device structure
* @client_id: fw client id to search
@@ -220,6 +233,26 @@ static int ishtp_cl_device_probe(struct device *dev)
}
/**
+ * ishtp_cl_bus_match() - Bus match() callback
+ * @dev: the device structure
+ * @drv: the driver structure
+ *
+ * This is a bus match callback, called when a new ishtp_cl_device is
+ * registered during ishtp bus client enumeration. Use the guid_t in
+ * drv and dev to decide whether they match or not.
+ *
+ * Return: 1 if dev & drv matches, 0 otherwise.
+ */
+static int ishtp_cl_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct ishtp_cl_device *device = to_ishtp_cl_device(dev);
+ struct ishtp_cl_driver *driver = to_ishtp_cl_driver(drv);
+
+ return guid_equal(driver->guid,
+ &device->fw_client->props.protocol_name);
+}
+
+/**
* ishtp_cl_device_remove() - Bus remove() callback
* @dev: the device structure
*
@@ -372,6 +405,7 @@ static struct bus_type ishtp_cl_bus_type = {
.name = "ishtp",
.dev_groups = ishtp_cl_dev_groups,
.probe = ishtp_cl_device_probe,
+ .match = ishtp_cl_bus_match,
.remove = ishtp_cl_device_remove,
.pm = &ishtp_cl_bus_dev_pm_ops,
.uevent = ishtp_cl_uevent,
@@ -445,6 +479,7 @@ static struct ishtp_cl_device *ishtp_bus_add_device(struct ishtp_device *dev,
}
ishtp_device_ready = true;
+ dev_set_drvdata(&device->dev, device);
return device;
}
@@ -464,7 +499,7 @@ static void ishtp_bus_remove_device(struct ishtp_cl_device *device)
}
/**
- * __ishtp_cl_driver_register() - Client driver register
+ * ishtp_cl_driver_register() - Client driver register
* @driver: the client driver instance
* @owner: Owner of this driver module
*
@@ -473,8 +508,8 @@ static void ishtp_bus_remove_device(struct ishtp_cl_device *device)
*
* Return: Return value of driver_register or -ENODEV if not ready
*/
-int __ishtp_cl_driver_register(struct ishtp_cl_driver *driver,
- struct module *owner)
+int ishtp_cl_driver_register(struct ishtp_cl_driver *driver,
+ struct module *owner)
{
int err;
@@ -491,7 +526,7 @@ int __ishtp_cl_driver_register(struct ishtp_cl_driver *driver,
return 0;
}
-EXPORT_SYMBOL(__ishtp_cl_driver_register);
+EXPORT_SYMBOL(ishtp_cl_driver_register);
/**
* ishtp_cl_driver_unregister() - Client driver unregister
@@ -807,6 +842,59 @@ int ishtp_use_dma_transfer(void)
}
/**
+ * ishtp_device() - Return device pointer
+ *
+ * This interface is used to return device pointer from ishtp_cl_device
+ * instance.
+ *
+ * Return: device *.
+ */
+struct device *ishtp_device(struct ishtp_cl_device *device)
+{
+ return &device->dev;
+}
+EXPORT_SYMBOL(ishtp_device);
+
+/**
+ * ishtp_get_pci_device() - Return PCI device dev pointer
+ * This interface is used to return PCI device pointer
+ * from ishtp_cl_device instance.
+ *
+ * Return: device *.
+ */
+struct device *ishtp_get_pci_device(struct ishtp_cl_device *device)
+{
+ return device->ishtp_dev->devc;
+}
+EXPORT_SYMBOL(ishtp_get_pci_device);
+
+/**
+ * ishtp_trace_callback() - Return trace callback
+ *
+ * This interface is used to return trace callback function pointer.
+ *
+ * Return: void *.
+ */
+void *ishtp_trace_callback(struct ishtp_cl_device *cl_device)
+{
+ return cl_device->ishtp_dev->print_log;
+}
+EXPORT_SYMBOL(ishtp_trace_callback);
+
+/**
+ * ish_hw_reset() - Call HW reset IPC callback
+ *
+ * This interface is used to reset HW in case of error.
+ *
+ * Return: value from IPC hw_reset callback
+ */
+int ish_hw_reset(struct ishtp_device *dev)
+{
+ return dev->ops->hw_reset(dev);
+}
+EXPORT_SYMBOL(ish_hw_reset);
+
+/**
* ishtp_bus_register() - Function to register bus
*
* This register ishtp bus