| /* 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__ */ |
