1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
3  */
4 
5 #ifndef _DPU_HW_INTERRUPTS_H
6 #define _DPU_HW_INTERRUPTS_H
7 
8 #include <linux/types.h>
9 
10 #include "dpu_hwio.h"
11 #include "dpu_hw_catalog.h"
12 #include "dpu_hw_util.h"
13 #include "dpu_hw_mdss.h"
14 
15 /* When making changes be sure to sync with dpu_intr_set */
16 enum dpu_hw_intr_reg {
17 	MDP_SSPP_TOP0_INTR,
18 	MDP_SSPP_TOP0_INTR2,
19 	MDP_SSPP_TOP0_HIST_INTR,
20 	/* All MDP_INTFn_INTR should come sequentially */
21 	MDP_INTF0_INTR,
22 	MDP_INTF1_INTR,
23 	MDP_INTF2_INTR,
24 	MDP_INTF3_INTR,
25 	MDP_INTF4_INTR,
26 	MDP_INTF5_INTR,
27 	MDP_INTF6_INTR,
28 	MDP_INTF7_INTR,
29 	MDP_INTF8_INTR,
30 	MDP_INTF1_TEAR_INTR,
31 	MDP_INTF2_TEAR_INTR,
32 	MDP_AD4_0_INTR,
33 	MDP_AD4_1_INTR,
34 	MDP_INTR_MAX,
35 };
36 
37 #define MDP_INTFn_INTR(intf)	(MDP_INTF0_INTR + (intf - INTF_0))
38 
39 #define DPU_IRQ_IDX(reg_idx, offset)	(1 + reg_idx * 32 + offset)
40 #define DPU_IRQ_REG(irq_idx)	((irq_idx - 1) / 32)
41 #define DPU_IRQ_BIT(irq_idx)	((irq_idx - 1) % 32)
42 
43 #define DPU_NUM_IRQS		(MDP_INTR_MAX * 32)
44 
45 struct dpu_hw_intr_entry {
46 	void (*cb)(void *arg);
47 	void *arg;
48 	atomic_t count;
49 };
50 
51 /**
52  * struct dpu_hw_intr: hw interrupts handling data structure
53  * @hw:               virtual address mapping
54  * @ops:              function pointer mapping for IRQ handling
55  * @cache_irq_mask:   array of IRQ enable masks reg storage created during init
56  * @save_irq_status:  array of IRQ status reg storage created during init
57  * @irq_lock:         spinlock for accessing IRQ resources
58  * @irq_cb_tbl:       array of IRQ callbacks
59  */
60 struct dpu_hw_intr {
61 	struct dpu_hw_blk_reg_map hw;
62 	u32 cache_irq_mask[MDP_INTR_MAX];
63 	u32 *save_irq_status;
64 	spinlock_t irq_lock;
65 	unsigned long irq_mask;
66 	const struct dpu_intr_reg *intr_set;
67 
68 	struct dpu_hw_intr_entry irq_tbl[DPU_NUM_IRQS];
69 };
70 
71 /**
72  * dpu_hw_intr_init(): Initializes the interrupts hw object
73  * @dev:  Corresponding device for devres management
74  * @addr: mapped register io address of MDP
75  * @m:    pointer to MDSS catalog data
76  */
77 struct dpu_hw_intr *dpu_hw_intr_init(struct drm_device *dev,
78 				     void __iomem *addr,
79 				     const struct dpu_mdss_cfg *m);
80 
81 #endif
82