1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * rcar_du_drv.h -- R-Car Display Unit DRM driver
4 *
5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
6 *
7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 */
9
10 #ifndef __RCAR_DU_DRV_H__
11 #define __RCAR_DU_DRV_H__
12
13 #include <linux/kernel.h>
14 #include <linux/wait.h>
15
16 #include "rcar_du_crtc.h"
17 #include "rcar_du_group.h"
18 #include "rcar_du_vsp.h"
19
20 struct clk;
21 struct device;
22 struct drm_device;
23 struct drm_property;
24 struct rcar_du_device;
25 struct rcar_du_encoder;
26
27 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK BIT(0) /* Per-CRTC IRQ and clock */
28 #define RCAR_DU_FEATURE_VSP1_SOURCE BIT(1) /* Has inputs from VSP1 */
29 #define RCAR_DU_FEATURE_INTERLACED BIT(2) /* HW supports interlaced */
30 #define RCAR_DU_FEATURE_TVM_SYNC BIT(3) /* Has TV switch/sync modes */
31
32 #define RCAR_DU_QUIRK_ALIGN_128B BIT(0) /* Align pitches to 128 bytes */
33
34 /*
35 * struct rcar_du_output_routing - Output routing specification
36 * @possible_crtcs: bitmask of possible CRTCs for the output
37 * @port: device tree port number corresponding to this output route
38 *
39 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
40 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
41 * of in-SoC encoder for the output.
42 */
43 struct rcar_du_output_routing {
44 unsigned int possible_crtcs;
45 unsigned int port;
46 };
47
48 /*
49 * struct rcar_du_device_info - DU model-specific information
50 * @gen: device generation (2 or 3)
51 * @features: device features (RCAR_DU_FEATURE_*)
52 * @quirks: device quirks (RCAR_DU_QUIRK_*)
53 * @channels_mask: bit mask of available DU channels
54 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
55 * @num_lvds: number of internal LVDS encoders
56 * @dpll_mask: bit mask of DU channels equipped with a DPLL
57 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
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_mask;
67 unsigned int lvds_clk_mask;
68 };
69
70 #define RCAR_DU_MAX_CRTCS 4
71 #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
72 #define RCAR_DU_MAX_VSPS 4
73
74 struct rcar_du_device {
75 struct device *dev;
76 const struct rcar_du_device_info *info;
77
78 void __iomem *mmio;
79
80 struct drm_device *ddev;
81
82 struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
83 unsigned int num_crtcs;
84
85 struct rcar_du_encoder *encoders[RCAR_DU_OUTPUT_MAX];
86
87 struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
88 struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
89
90 struct {
91 struct drm_property *colorkey;
92 } props;
93
94 unsigned int dpad0_source;
95 unsigned int dpad1_source;
96 unsigned int vspd1_sink;
97 };
98
rcar_du_has(struct rcar_du_device * rcdu,unsigned int feature)99 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
100 unsigned int feature)
101 {
102 return rcdu->info->features & feature;
103 }
104
rcar_du_needs(struct rcar_du_device * rcdu,unsigned int quirk)105 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
106 unsigned int quirk)
107 {
108 return rcdu->info->quirks & quirk;
109 }
110
rcar_du_read(struct rcar_du_device * rcdu,u32 reg)111 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
112 {
113 return ioread32(rcdu->mmio + reg);
114 }
115
rcar_du_write(struct rcar_du_device * rcdu,u32 reg,u32 data)116 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
117 {
118 iowrite32(data, rcdu->mmio + reg);
119 }
120
121 #endif /* __RCAR_DU_DRV_H__ */
122
