1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 */
6
7#ifndef __TIDSS_IRQ_H__
8#define __TIDSS_IRQ_H__
9
10#include <linux/types.h>
11
12#include "tidss_drv.h"
13
14/*
15 * The IRQ status from various DISPC IRQ registers are packed into a single
16 * value, where the bits are defined as follows:
17 *
18 * bit group |dev|wb |mrg0|mrg1|mrg2|mrg3|plane0-3| <unused> |
19 * bit use   |D  |fou|FEOL|FEOL|FEOL|FEOL|  UUUU  |          |
20 * bit number|0  |1-3|4-7 |8-11|  12-19  | 20-23  |  24-31   |
21 *
22 * device bits:	D = OCP error
23 * WB bits:	f = frame done wb, o = wb buffer overflow,
24 *		u = wb buffer uncomplete
25 * vp bits:	F = frame done, E = vsync even, O = vsync odd, L = sync lost
26 * plane bits:	U = fifo underflow
27 */
28
29#define DSS_IRQ_DEVICE_OCP_ERR			BIT(0)
30
31#define DSS_IRQ_DEVICE_FRAMEDONEWB		BIT(1)
32#define DSS_IRQ_DEVICE_WBBUFFEROVERFLOW		BIT(2)
33#define DSS_IRQ_DEVICE_WBUNCOMPLETEERROR	BIT(3)
34#define DSS_IRQ_DEVICE_WB_MASK			GENMASK(3, 1)
35
36#define DSS_IRQ_VP_BIT_N(ch, bit)	(4 + 4 * (ch) + (bit))
37#define DSS_IRQ_PLANE_BIT_N(plane, bit) \
38	(DSS_IRQ_VP_BIT_N(TIDSS_MAX_PORTS, 0) + 1 * (plane) + (bit))
39
40#define DSS_IRQ_VP_BIT(ch, bit)	BIT(DSS_IRQ_VP_BIT_N((ch), (bit)))
41#define DSS_IRQ_PLANE_BIT(plane, bit) \
42	BIT(DSS_IRQ_PLANE_BIT_N((plane), (bit)))
43
44static inline dispc_irq_t DSS_IRQ_VP_MASK(u32 ch)
45{
46	return GENMASK(DSS_IRQ_VP_BIT_N((ch), 3), DSS_IRQ_VP_BIT_N((ch), 0));
47}
48
49static inline dispc_irq_t DSS_IRQ_PLANE_MASK(u32 plane)
50{
51	return GENMASK(DSS_IRQ_PLANE_BIT_N((plane), 0),
52		       DSS_IRQ_PLANE_BIT_N((plane), 0));
53}
54
55#define DSS_IRQ_VP_FRAME_DONE(ch)	DSS_IRQ_VP_BIT((ch), 0)
56#define DSS_IRQ_VP_VSYNC_EVEN(ch)	DSS_IRQ_VP_BIT((ch), 1)
57#define DSS_IRQ_VP_VSYNC_ODD(ch)	DSS_IRQ_VP_BIT((ch), 2)
58#define DSS_IRQ_VP_SYNC_LOST(ch)	DSS_IRQ_VP_BIT((ch), 3)
59
60#define DSS_IRQ_PLANE_FIFO_UNDERFLOW(plane)	DSS_IRQ_PLANE_BIT((plane), 0)
61
62struct drm_crtc;
63struct drm_device;
64
65struct tidss_device;
66
67void tidss_irq_enable_vblank(struct drm_crtc *crtc);
68void tidss_irq_disable_vblank(struct drm_crtc *crtc);
69
70int tidss_irq_install(struct drm_device *ddev, unsigned int irq);
71void tidss_irq_uninstall(struct drm_device *ddev);
72
73void tidss_irq_resume(struct tidss_device *tidss);
74
75#endif
76