1 /*
2 * rcar_du_drv.h -- R-Car Display Unit DRM driver
3 *
4 * Copyright (C) 2013-2014 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
23 struct clk;
24 struct device;
25 struct drm_device;
26 struct drm_fbdev_cma;
27 struct rcar_du_device;
28 struct rcar_du_lvdsenc;
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
33 #define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */
34 #define RCAR_DU_QUIRK_LVDS_LANES (1 << 1) /* LVDS lanes 1 and 3 inverted */
35
36 /*
37 * struct rcar_du_output_routing - Output routing specification
38 * @possible_crtcs: bitmask of possible CRTCs for the output
39 * @encoder_type: DRM type of the internal encoder associated with the output
40 * @port: device tree port number corresponding to this output route
41 *
42 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
43 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
44 * of in-SoC encoder for the output.
45 */
46 struct rcar_du_output_routing {
47 unsigned int possible_crtcs;
48 unsigned int encoder_type;
49 unsigned int port;
50 };
51
52 /*
53 * struct rcar_du_device_info - DU model-specific information
54 * @features: device features (RCAR_DU_FEATURE_*)
55 * @quirks: device quirks (RCAR_DU_QUIRK_*)
56 * @num_crtcs: total number of CRTCs
57 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
58 * @num_lvds: number of internal LVDS encoders
59 */
60 struct rcar_du_device_info {
61 unsigned int features;
62 unsigned int quirks;
63 unsigned int num_crtcs;
64 struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
65 unsigned int num_lvds;
66 };
67
68 #define RCAR_DU_MAX_CRTCS 3
69 #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
70 #define RCAR_DU_MAX_LVDS 2
71
72 struct rcar_du_device {
73 struct device *dev;
74 const struct rcar_du_device_info *info;
75
76 void __iomem *mmio;
77
78 struct drm_device *ddev;
79 struct drm_fbdev_cma *fbdev;
80
81 struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
82 unsigned int num_crtcs;
83
84 struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
85
86 struct {
87 struct drm_property *alpha;
88 struct drm_property *colorkey;
89 struct drm_property *zpos;
90 } props;
91
92 unsigned int dpad0_source;
93 struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
94
95 struct {
96 wait_queue_head_t wait;
97 u32 pending;
98 } commit;
99 };
100
rcar_du_has(struct rcar_du_device * rcdu,unsigned int feature)101 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
102 unsigned int feature)
103 {
104 return rcdu->info->features & feature;
105 }
106
rcar_du_needs(struct rcar_du_device * rcdu,unsigned int quirk)107 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
108 unsigned int quirk)
109 {
110 return rcdu->info->quirks & quirk;
111 }
112
rcar_du_read(struct rcar_du_device * rcdu,u32 reg)113 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
114 {
115 return ioread32(rcdu->mmio + reg);
116 }
117
rcar_du_write(struct rcar_du_device * rcdu,u32 reg,u32 data)118 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
119 {
120 iowrite32(data, rcdu->mmio + reg);
121 }
122
123 #endif /* __RCAR_DU_DRV_H__ */
124