1 /*
2 * rcar_du_drv.h -- R-Car Display Unit DRM driver
3 *
4 * Copyright (C) 2013-2015 Renesas Electronics Corporation
5 *
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #ifndef __RCAR_DU_DRV_H__
15 #define __RCAR_DU_DRV_H__
16
17 #include <linux/kernel.h>
18 #include <linux/wait.h>
19
20 #include "rcar_du_crtc.h"
21 #include "rcar_du_group.h"
22 #include "rcar_du_vsp.h"
23
24 struct clk;
25 struct device;
26 struct drm_device;
27 struct drm_fbdev_cma;
28 struct rcar_du_device;
29
30 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */
31 #define RCAR_DU_FEATURE_EXT_CTRL_REGS (1 << 1) /* Has extended control registers */
32 #define RCAR_DU_FEATURE_VSP1_SOURCE (1 << 2) /* Has inputs from VSP1 */
33
34 #define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */
35
36 /*
37 * struct rcar_du_output_routing - Output routing specification
38 * @possible_crtcs: bitmask of possible CRTCs for the output
39 * @port: device tree port number corresponding to this output route
40 *
41 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
42 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
43 * of in-SoC encoder for the output.
44 */
45 struct rcar_du_output_routing {
46 unsigned int possible_crtcs;
47 unsigned int port;
48 };
49
50 /*
51 * struct rcar_du_device_info - DU model-specific information
52 * @gen: device generation (2 or 3)
53 * @features: device features (RCAR_DU_FEATURE_*)
54 * @quirks: device quirks (RCAR_DU_QUIRK_*)
55 * @channels_mask: bit mask of available DU channels
56 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
57 * @num_lvds: number of internal LVDS encoders
58 */
59 struct rcar_du_device_info {
60 unsigned int gen;
61 unsigned int features;
62 unsigned int quirks;
63 unsigned int channels_mask;
64 struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
65 unsigned int num_lvds;
66 unsigned int dpll_ch;
67 };
68
69 #define RCAR_DU_MAX_CRTCS 4
70 #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
71 #define RCAR_DU_MAX_VSPS 4
72
73 struct rcar_du_device {
74 struct device *dev;
75 const struct rcar_du_device_info *info;
76
77 void __iomem *mmio;
78
79 struct drm_device *ddev;
80 struct drm_fbdev_cma *fbdev;
81 struct drm_atomic_state *suspend_state;
82
83 struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
84 unsigned int num_crtcs;
85
86 struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
87 struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
88
89 struct {
90 struct drm_property *colorkey;
91 } props;
92
93 unsigned int dpad0_source;
94 unsigned int vspd1_sink;
95 };
96
rcar_du_has(struct rcar_du_device * rcdu,unsigned int feature)97 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
98 unsigned int feature)
99 {
100 return rcdu->info->features & feature;
101 }
102
rcar_du_needs(struct rcar_du_device * rcdu,unsigned int quirk)103 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
104 unsigned int quirk)
105 {
106 return rcdu->info->quirks & quirk;
107 }
108
rcar_du_read(struct rcar_du_device * rcdu,u32 reg)109 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
110 {
111 return ioread32(rcdu->mmio + reg);
112 }
113
rcar_du_write(struct rcar_du_device * rcdu,u32 reg,u32 data)114 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
115 {
116 iowrite32(data, rcdu->mmio + reg);
117 }
118
119 #endif /* __RCAR_DU_DRV_H__ */
120
