1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. 3 */ 4 5 #ifndef __DPU_CORE_IRQ_H__ 6 #define __DPU_CORE_IRQ_H__ 7 8 #include "dpu_kms.h" 9 #include "dpu_hw_interrupts.h" 10 11 /** 12 * dpu_core_irq_preinstall - perform pre-installation of core IRQ handler 13 * @kms: MSM KMS handle 14 * @return: none 15 */ 16 void dpu_core_irq_preinstall(struct msm_kms *kms); 17 18 /** 19 * dpu_core_irq_uninstall - uninstall core IRQ handler 20 * @kms: MSM KMS handle 21 * @return: none 22 */ 23 void dpu_core_irq_uninstall(struct msm_kms *kms); 24 25 /** 26 * dpu_core_irq - core IRQ handler 27 * @kms: MSM KMS handle 28 * @return: interrupt handling status 29 */ 30 irqreturn_t dpu_core_irq(struct msm_kms *kms); 31 32 /** 33 * dpu_core_irq_read - IRQ helper function for reading IRQ status 34 * @dpu_kms: DPU handle 35 * @irq_idx: irq index 36 * @return: non-zero if irq detected; otherwise no irq detected 37 */ 38 u32 dpu_core_irq_read( 39 struct dpu_kms *dpu_kms, 40 int irq_idx); 41 42 /** 43 * dpu_core_irq_register_callback - For registering callback function on IRQ 44 * interrupt 45 * @dpu_kms: DPU handle 46 * @irq_idx: irq index 47 * @irq_cb: IRQ callback funcion. 48 * @irq_arg: IRQ callback argument. 49 * @return: 0 for success registering callback, otherwise failure 50 * 51 * This function supports registration of multiple callbacks for each interrupt. 52 */ 53 int dpu_core_irq_register_callback( 54 struct dpu_kms *dpu_kms, 55 int irq_idx, 56 void (*irq_cb)(void *arg, int irq_idx), 57 void *irq_arg); 58 59 /** 60 * dpu_core_irq_unregister_callback - For unregistering callback function on IRQ 61 * interrupt 62 * @dpu_kms: DPU handle 63 * @irq_idx: irq index 64 * @return: 0 for success registering callback, otherwise failure 65 * 66 * This function supports registration of multiple callbacks for each interrupt. 67 */ 68 int dpu_core_irq_unregister_callback( 69 struct dpu_kms *dpu_kms, 70 int irq_idx); 71 72 /** 73 * dpu_debugfs_core_irq_init - register core irq debugfs 74 * @dpu_kms: pointer to kms 75 * @parent: debugfs directory root 76 */ 77 void dpu_debugfs_core_irq_init(struct dpu_kms *dpu_kms, 78 struct dentry *parent); 79 80 #endif /* __DPU_CORE_IRQ_H__ */ 81