/* 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_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__ */