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Commit fb7523d0 authored by Sujeev Dias's avatar Sujeev Dias
Browse files

mhi: core: Create dummy MHI APIs to fix compile errors 



MHI is not supported by all targets, however many MHI client drivers
have a common driver that include MHI APIs. Create dummy APIs such
that even if MHI not present, does not cause any compile errors.

CRs-Fixed: 2053159
Change-Id: I427d925a658518d230a1d14df0cf27a7b19f207e
Signed-off-by: default avatarSujeev Dias <sdias@codeaurora.org>
parent a2ab1656

include/linux/msm_mhi.h

+116 −21
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ enum mhi_rddm_segment { 
	MHI_RDDM_RD_SEGMENT,

};



#if defined(CONFIG_MSM_MHI)

/**

 * mhi_is_device_ready - Check if MHI is ready to register clients

 *
@@ -187,10 +188,22 @@ bool mhi_is_device_ready(const struct device * const dev, 
 * @userdata: cb data for client

 * @Return 0 on success

 */

int mhi_register_device(struct mhi_device *mhi_device,

			const char *node_name,

int mhi_register_device(struct mhi_device *mhi_device, const char *node_name,

			void *user_data);



/**

 * mhi_register_channel - Client must call this function to obtain a handle for

 *			  any MHI operations

 *

 *  @client_handle:  Handle populated by MHI, opaque to client

 *  @client_info:    Channel\device information provided by client to

 *                   which the handle maps to.

 *

 * @Return errno

 */

int mhi_register_channel(struct mhi_client_handle **client_handle,

			 struct mhi_client_info_t *client_info);



/**

 * mhi_pm_control_device - power management control api

 * @mhi_device: registered device structure
@@ -218,19 +231,6 @@ int mhi_xfer_rddm(struct mhi_device *mhi_device, enum mhi_rddm_segment seg, 
 */

int mhi_deregister_channel(struct mhi_client_handle *client_handle);



/**

 * mhi_register_channel - Client must call this function to obtain a handle for

 *			  any MHI operations

 *

 *  @client_handle:  Handle populated by MHI, opaque to client

 *  @client_info:    Channel\device information provided by client to

 *                   which the handle maps to.

 *

 * @Return errno

 */

int mhi_register_channel(struct mhi_client_handle **client_handle,

			 struct mhi_client_info_t *client_info);



/**

 * mhi_open_channel - Client must call this function to open a channel

 *
@@ -258,8 +258,8 @@ int mhi_open_channel(struct mhi_client_handle *client_handle); 
 *

 * @Return errno

 */

int mhi_queue_xfer(struct mhi_client_handle *client_handle,

		void *buf, size_t buf_len, enum MHI_FLAGS mhi_flags);

int mhi_queue_xfer(struct mhi_client_handle *client_handle, void *buf,

		   size_t buf_len, enum MHI_FLAGS mhi_flags);



/**

 * mhi_close_channel - Client can request channel to be closed and handle freed
@@ -311,12 +311,107 @@ int mhi_poll_inbound(struct mhi_client_handle *client_handle, 
 */

int mhi_get_max_desc(struct mhi_client_handle *client_handle);



/* RmNET Reserved APIs, This APIs are reserved for use by the linux network

* stack only. Use by other clients will introduce system wide issues

*/

/* following APIs meant to be used by rmnet interface only */

int mhi_set_lpm(struct mhi_client_handle *client_handle, bool enable_lpm);

int mhi_get_epid(struct mhi_client_handle *mhi_handle);

struct mhi_result *mhi_poll(struct mhi_client_handle *client_handle);

void mhi_mask_irq(struct mhi_client_handle *client_handle);

void mhi_unmask_irq(struct mhi_client_handle *client_handle);



#else

static inline bool mhi_is_device_ready(const struct device * const dev,

				       const char *node_name)

{

	return false;

};



static inline int mhi_register_device(struct mhi_device *mhi_device,

				      const char *node_name, void *user_data)

{

	return -EINVAL;

};



static inline int mhi_register_channel(struct mhi_client_handle **client_handle,

				       struct mhi_client_info_t *client_info)

{

	return -EINVAL;

};



static inline int mhi_pm_control_device(struct mhi_device *mhi_device,

					enum mhi_dev_ctrl ctrl)

{

	return -EINVAL;

};



static inline int mhi_xfer_rddm(struct mhi_device *mhi_device,

				enum mhi_rddm_segment seg,

				struct scatterlist **sg_list)

{

	return -EINVAL;

};



static inline int mhi_deregister_channel(struct mhi_client_handle

					 *client_handle)

{

	return -EINVAL;

};



static inline int mhi_open_channel(struct mhi_client_handle *client_handle)

{

	return -EINVAL;

};



static inline int mhi_queue_xfer(struct mhi_client_handle *client_handle,

				 void *buf, size_t buf_len,

				 enum MHI_FLAGS mhi_flags)

{

	return -EINVAL;

};



static inline void mhi_close_channel(struct mhi_client_handle *client_handle)

{

};



static inline int mhi_get_free_desc(struct mhi_client_handle *client_handle)

{

	return -EINVAL;

};



static inline int mhi_poll_inbound(struct mhi_client_handle *client_handle,

				   struct mhi_result *result)

{

	return -EINVAL;

};



static inline int mhi_get_max_desc(struct mhi_client_handle *client_handle)

{

	return -EINVAL;

};



static inline int mhi_set_lpm(struct mhi_client_handle *client_handle,

			      bool enable_lpm)

{

	return -EINVAL;

};



static inline int mhi_get_epid(struct mhi_client_handle *mhi_handle)

{

	return -EINVAL;

};



static inline struct mhi_result *mhi_poll(struct mhi_client_handle

					  *client_handle)

{

	return NULL;

};



static inline void mhi_mask_irq(struct mhi_client_handle *client_handle)

{

};



static inline void mhi_unmask_irq(struct mhi_client_handle *client_handle)

{

};



#endif

#endif