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/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*/
#ifndef __DPU_CORE_IRQ_H__
#define __DPU_CORE_IRQ_H__
#include "dpu_kms.h"
#include "dpu_hw_interrupts.h"
/**
* dpu_core_irq_preinstall - perform pre-installation of core IRQ handler
* @dpu_kms: DPU handle
* @return: none
*/
void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms);
/**
* dpu_core_irq_uninstall - uninstall core IRQ handler
* @dpu_kms: DPU handle
* @return: none
*/
void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms);
/**
* dpu_core_irq - core IRQ handler
* @dpu_kms: DPU handle
* @return: interrupt handling status
*/
irqreturn_t dpu_core_irq(struct dpu_kms *dpu_kms);
/**
* dpu_core_irq_enable - IRQ helper function for enabling one or more IRQs
* @dpu_kms: DPU handle
* @irq_idxs: Array of irq index
* @irq_count: Number of irq_idx provided in the array
* @return: 0 for success enabling IRQ, otherwise failure
*
* This function increments count on each enable and decrements on each
* disable. Interrupts is enabled if count is 0 before increment.
*/
int dpu_core_irq_enable(
struct dpu_kms *dpu_kms,
int *irq_idxs,
uint32_t irq_count);
/**
* dpu_core_irq_disable - IRQ helper function for disabling one of more IRQs
* @dpu_kms: DPU handle
* @irq_idxs: Array of irq index
* @irq_count: Number of irq_idx provided in the array
* @return: 0 for success disabling IRQ, otherwise failure
*
* This function increments count on each enable and decrements on each
* disable. Interrupts is disabled if count is 0 after decrement.
*/
int dpu_core_irq_disable(
struct dpu_kms *dpu_kms,
int *irq_idxs,
uint32_t irq_count);
/**
* dpu_core_irq_read - IRQ helper function for reading IRQ status
* @dpu_kms: DPU handle
* @irq_idx: irq index
* @clear: True to clear the irq after read
* @return: non-zero if irq detected; otherwise no irq detected
*/
u32 dpu_core_irq_read(
struct dpu_kms *dpu_kms,
int irq_idx,
bool clear);
/**
* dpu_core_irq_register_callback - For registering callback function on IRQ
* interrupt
* @dpu_kms: DPU handle
* @irq_idx: irq index
* @irq_cb: IRQ callback structure, containing callback function
* and argument. Passing NULL for irq_cb will unregister
* the callback for the given irq_idx
* This must exist until un-registration.
* @return: 0 for success registering callback, otherwise failure
*
* This function supports registration of multiple callbacks for each interrupt.
*/
int dpu_core_irq_register_callback(
struct dpu_kms *dpu_kms,
int irq_idx,
struct dpu_irq_callback *irq_cb);
/**
* dpu_core_irq_unregister_callback - For unregistering callback function on IRQ
* interrupt
* @dpu_kms: DPU handle
* @irq_idx: irq index
* @irq_cb: IRQ callback structure, containing callback function
* and argument. Passing NULL for irq_cb will unregister
* the callback for the given irq_idx
* This must match with registration.
* @return: 0 for success registering callback, otherwise failure
*
* This function supports registration of multiple callbacks for each interrupt.
*/
int dpu_core_irq_unregister_callback(
struct dpu_kms *dpu_kms,
int irq_idx,
struct dpu_irq_callback *irq_cb);
/**
* dpu_debugfs_core_irq_init - register core irq debugfs
* @dpu_kms: pointer to kms
* @parent: debugfs directory root
*/
void dpu_debugfs_core_irq_init(struct dpu_kms *dpu_kms,
struct dentry *parent);
#endif /* __DPU_CORE_IRQ_H__ */
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