79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
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/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _SOC_QCOM_GLINK_RPM_XPRT_H_
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#define _SOC_QCOM_GLINK_RPM_XPRT_H_
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#include <linux/types.h>
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#ifdef CONFIG_MSM_GLINK
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/**
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* glink_rpm_rx_poll() - Poll and receive any available events
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* @handle: Channel handle in which this operation is performed.
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*
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* This function is used to poll and receive events and packets while the
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* receive interrupt from RPM is disabled.
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*
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* Note that even if a return value > 0 is returned indicating that some events
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* were processed, clients should only use the notification functions passed
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* into glink_open() to determine if an entire packet has been received since
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* some events may be internal details that are not visible to clients.
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*
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* Return: 0 for no packets available; > 0 for events available; standard
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* Linux error codes on failure.
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*/
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int glink_rpm_rx_poll(void *handle);
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/**
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* glink_rpm_mask_rx_interrupt() - Mask or unmask the RPM receive interrupt
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* @handle: Channel handle in which this operation is performed.
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* @mask: Flag to mask or unmask the interrupt.
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* @pstruct: Pointer to any platform specific data.
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*
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* This function is used to mask or unmask the receive interrupt from RPM.
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* "mask" set to true indicates masking the interrupt and when set to false
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* indicates unmasking the interrupt.
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*
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* Return: 0 on success, standard Linux error codes on failure.
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*/
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int glink_rpm_mask_rx_interrupt(void *handle, bool mask, void *pstruct);
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/**
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* glink_wait_link_down() - Return whether read/write indices in FIFO are all 0.
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* @handle: Channel handle in which this operation is performed.
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*
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* This function returns the status of the read/write indices in the FIFO.
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*
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* Return: 1 if the indices are all 0, 0 otherwise.
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*/
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int glink_wait_link_down(void *handle);
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#else
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static inline int glink_rpm_rx_poll(void *handle)
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{
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return -ENODEV;
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}
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static inline int glink_rpm_mask_rx_interrupt(void *handle, bool mask,
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void *pstruct)
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{
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return -ENODEV;
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}
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static inline int glink_wait_link_down(void *handle)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_MSM_GLINK */
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#endif /* _SOC_QCOM_GLINK_RPM_XPRT_H_ */
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