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 struct rcar_du_lvdsenc;
30
31 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */
32 #define RCAR_DU_FEATURE_EXT_CTRL_REGS (1 << 1) /* Has extended control registers */
33 #define RCAR_DU_FEATURE_VSP1_SOURCE (1 << 2) /* Has inputs from VSP1 */
34
35 #define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */
36 #define RCAR_DU_QUIRK_LVDS_LANES (1 << 1) /* LVDS lanes 1 and 3 inverted */
37
38 /*
39 * struct rcar_du_output_routing - Output routing specification
40 * @possible_crtcs: bitmask of possible CRTCs for the output
41 * @encoder_type: DRM type of the internal encoder associated with the output
42 * @port: device tree port number corresponding to this output route
43 *
44 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
45 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
46 * of in-SoC encoder for the output.
47 */
48 struct rcar_du_output_routing {
49 unsigned int possible_crtcs;
50 unsigned int encoder_type;
51 unsigned int port;
52 };
53
54 /*
55 * struct rcar_du_device_info - DU model-specific information
56 * @gen: device generation (2 or 3)
57 * @features: device features (RCAR_DU_FEATURE_*)
58 * @quirks: device quirks (RCAR_DU_QUIRK_*)
59 * @num_crtcs: total number of CRTCs
60 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
61 * @num_lvds: number of internal LVDS encoders
62 */
63 struct rcar_du_device_info {
64 unsigned int gen;
65 unsigned int features;
66 unsigned int quirks;
67 unsigned int num_crtcs;
68 struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
69 unsigned int num_lvds;
70 };
71
72 #define RCAR_DU_MAX_CRTCS 4
73 #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
74 #define RCAR_DU_MAX_LVDS 2
75 #define RCAR_DU_MAX_VSPS 4
76
77 struct rcar_du_device {
78 struct device *dev;
79 const struct rcar_du_device_info *info;
80
81 void __iomem *mmio;
82
83 struct drm_device *ddev;
84 struct drm_fbdev_cma *fbdev;
85
86 struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
87 unsigned int num_crtcs;
88
89 struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
90 struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
91
92 struct {
93 struct drm_property *alpha;
94 struct drm_property *colorkey;
95 } props;
96
97 unsigned int dpad0_source;
98 unsigned int vspd1_sink;
99
100 struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
101
102 struct {
103 wait_queue_head_t wait;
104 u32 pending;
105 } commit;
106 };
107
rcar_du_has(struct rcar_du_device * rcdu,unsigned int feature)108 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
109 unsigned int feature)
110 {
111 return rcdu->info->features & feature;
112 }
113
rcar_du_needs(struct rcar_du_device * rcdu,unsigned int quirk)114 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
115 unsigned int quirk)
116 {
117 return rcdu->info->quirks & quirk;
118 }
119
rcar_du_read(struct rcar_du_device * rcdu,u32 reg)120 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
121 {
122 return ioread32(rcdu->mmio + reg);
123 }
124
rcar_du_write(struct rcar_du_device * rcdu,u32 reg,u32 data)125 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
126 {
127 iowrite32(data, rcdu->mmio + reg);
128 }
129
130 #endif /* __RCAR_DU_DRV_H__ */
131