1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
2 | /* |
3 | * 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 <drm/drm_device.h> |
17 | |
18 | #include "rcar_cmm.h" |
19 | #include "rcar_du_crtc.h" |
20 | #include "rcar_du_group.h" |
21 | #include "rcar_du_vsp.h" |
22 | |
23 | struct clk; |
24 | struct device; |
25 | struct drm_bridge; |
26 | struct drm_property; |
27 | struct rcar_du_device; |
28 | |
29 | #define RCAR_DU_FEATURE_CRTC_IRQ BIT(0) /* Per-CRTC IRQ */ |
30 | #define RCAR_DU_FEATURE_CRTC_CLOCK BIT(1) /* Per-CRTC clock */ |
31 | #define RCAR_DU_FEATURE_VSP1_SOURCE BIT(2) /* Has inputs from VSP1 */ |
32 | #define RCAR_DU_FEATURE_INTERLACED BIT(3) /* HW supports interlaced */ |
33 | #define RCAR_DU_FEATURE_TVM_SYNC BIT(4) /* Has TV switch/sync modes */ |
34 | #define RCAR_DU_FEATURE_NO_BLENDING BIT(5) /* PnMR.SPIM does not have ALP nor EOR bits */ |
35 | |
36 | #define RCAR_DU_QUIRK_ALIGN_128B BIT(0) /* Align pitches to 128 bytes */ |
37 | |
38 | enum rcar_du_output { |
39 | RCAR_DU_OUTPUT_DPAD0, |
40 | RCAR_DU_OUTPUT_DPAD1, |
41 | RCAR_DU_OUTPUT_DSI0, |
42 | RCAR_DU_OUTPUT_DSI1, |
43 | RCAR_DU_OUTPUT_HDMI0, |
44 | RCAR_DU_OUTPUT_HDMI1, |
45 | RCAR_DU_OUTPUT_LVDS0, |
46 | RCAR_DU_OUTPUT_LVDS1, |
47 | RCAR_DU_OUTPUT_TCON, |
48 | RCAR_DU_OUTPUT_MAX, |
49 | }; |
50 | |
51 | /* |
52 | * struct rcar_du_output_routing - Output routing specification |
53 | * @possible_crtcs: bitmask of possible CRTCs for the output |
54 | * @port: device tree port number corresponding to this output route |
55 | * |
56 | * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data |
57 | * specify the valid SoC outputs, which CRTCs can drive the output, and the type |
58 | * of in-SoC encoder for the output. |
59 | */ |
60 | struct rcar_du_output_routing { |
61 | unsigned int possible_crtcs; |
62 | unsigned int port; |
63 | }; |
64 | |
65 | /* |
66 | * struct rcar_du_device_info - DU model-specific information |
67 | * @gen: device generation (2 or 3) |
68 | * @features: device features (RCAR_DU_FEATURE_*) |
69 | * @quirks: device quirks (RCAR_DU_QUIRK_*) |
70 | * @channels_mask: bit mask of available DU channels |
71 | * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*) |
72 | * @num_lvds: number of internal LVDS encoders |
73 | * @num_rpf: number of RPFs in VSP |
74 | * @dpll_mask: bit mask of DU channels equipped with a DPLL |
75 | * @dsi_clk_mask: bitmask of channels that can use the DSI clock as dot clock |
76 | * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock |
77 | */ |
78 | struct rcar_du_device_info { |
79 | unsigned int gen; |
80 | unsigned int features; |
81 | unsigned int quirks; |
82 | unsigned int channels_mask; |
83 | struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX]; |
84 | unsigned int num_lvds; |
85 | unsigned int num_rpf; |
86 | unsigned int dpll_mask; |
87 | unsigned int dsi_clk_mask; |
88 | unsigned int lvds_clk_mask; |
89 | }; |
90 | |
91 | #define RCAR_DU_MAX_CRTCS 4 |
92 | #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2) |
93 | #define RCAR_DU_MAX_VSPS 4 |
94 | #define RCAR_DU_MAX_LVDS 2 |
95 | #define RCAR_DU_MAX_DSI 2 |
96 | |
97 | struct rcar_du_device { |
98 | struct device *dev; |
99 | const struct rcar_du_device_info *info; |
100 | |
101 | void __iomem *mmio; |
102 | |
103 | struct drm_device ddev; |
104 | |
105 | struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS]; |
106 | unsigned int num_crtcs; |
107 | |
108 | struct rcar_du_group groups[RCAR_DU_MAX_GROUPS]; |
109 | struct platform_device *cmms[RCAR_DU_MAX_CRTCS]; |
110 | struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS]; |
111 | struct drm_bridge *lvds[RCAR_DU_MAX_LVDS]; |
112 | struct drm_bridge *dsi[RCAR_DU_MAX_DSI]; |
113 | |
114 | struct { |
115 | struct drm_property *colorkey; |
116 | } props; |
117 | |
118 | unsigned int dpad0_source; |
119 | unsigned int dpad1_source; |
120 | unsigned int vspd1_sink; |
121 | }; |
122 | |
123 | static inline struct rcar_du_device *to_rcar_du_device(struct drm_device *dev) |
124 | { |
125 | return container_of(dev, struct rcar_du_device, ddev); |
126 | } |
127 | |
128 | static inline bool rcar_du_has(struct rcar_du_device *rcdu, |
129 | unsigned int feature) |
130 | { |
131 | return rcdu->info->features & feature; |
132 | } |
133 | |
134 | static inline bool rcar_du_needs(struct rcar_du_device *rcdu, |
135 | unsigned int quirk) |
136 | { |
137 | return rcdu->info->quirks & quirk; |
138 | } |
139 | |
140 | static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg) |
141 | { |
142 | return ioread32(rcdu->mmio + reg); |
143 | } |
144 | |
145 | static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data) |
146 | { |
147 | iowrite32(data, rcdu->mmio + reg); |
148 | } |
149 | |
150 | const char *rcar_du_output_name(enum rcar_du_output output); |
151 | |
152 | #endif /* __RCAR_DU_DRV_H__ */ |
153 | |