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 = Unused
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_FRAMEDONEWB BIT(1)
30 #define DSS_IRQ_DEVICE_WBBUFFEROVERFLOW BIT(2)
31 #define DSS_IRQ_DEVICE_WBUNCOMPLETEERROR BIT(3)
32 #define DSS_IRQ_DEVICE_WB_MASK GENMASK(3, 1)
33
34 #define DSS_IRQ_VP_BIT_N(ch, bit) (4 + 4 * (ch) + (bit))
35 #define DSS_IRQ_PLANE_BIT_N(plane, bit) \
36 (DSS_IRQ_VP_BIT_N(TIDSS_MAX_PORTS, 0) + 1 * (plane) + (bit))
37
38 #define DSS_IRQ_VP_BIT(ch, bit) BIT(DSS_IRQ_VP_BIT_N((ch), (bit)))
39 #define DSS_IRQ_PLANE_BIT(plane, bit) \
40 BIT(DSS_IRQ_PLANE_BIT_N((plane), (bit)))
41
DSS_IRQ_VP_MASK(u32 ch)42 static inline dispc_irq_t DSS_IRQ_VP_MASK(u32 ch)
43 {
44 return GENMASK(DSS_IRQ_VP_BIT_N((ch), 3), DSS_IRQ_VP_BIT_N((ch), 0));
45 }
46
DSS_IRQ_PLANE_MASK(u32 plane)47 static inline dispc_irq_t DSS_IRQ_PLANE_MASK(u32 plane)
48 {
49 return GENMASK(DSS_IRQ_PLANE_BIT_N((plane), 0),
50 DSS_IRQ_PLANE_BIT_N((plane), 0));
51 }
52
53 #define DSS_IRQ_VP_FRAME_DONE(ch) DSS_IRQ_VP_BIT((ch), 0)
54 #define DSS_IRQ_VP_VSYNC_EVEN(ch) DSS_IRQ_VP_BIT((ch), 1)
55 #define DSS_IRQ_VP_VSYNC_ODD(ch) DSS_IRQ_VP_BIT((ch), 2)
56 #define DSS_IRQ_VP_SYNC_LOST(ch) DSS_IRQ_VP_BIT((ch), 3)
57
58 #define DSS_IRQ_PLANE_FIFO_UNDERFLOW(plane) DSS_IRQ_PLANE_BIT((plane), 0)
59
60 struct drm_crtc;
61 struct drm_device;
62
63 struct tidss_device;
64
65 void tidss_irq_enable_vblank(struct drm_crtc *crtc);
66 void tidss_irq_disable_vblank(struct drm_crtc *crtc);
67
68 int tidss_irq_install(struct drm_device *ddev, unsigned int irq);
69 void tidss_irq_uninstall(struct drm_device *ddev);
70
71 void tidss_irq_resume(struct tidss_device *tidss);
72
73 #endif
74