tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: MIT */
2
3#ifndef __LINUX_GUD_INTERNAL_H
4#define __LINUX_GUD_INTERNAL_H
5
6#include <linux/list.h>
7#include <linux/mutex.h>
8#include <linux/scatterlist.h>
9#include <linux/usb.h>
10#include <linux/workqueue.h>
11#include <uapi/drm/drm_fourcc.h>
12
13#include <drm/drm_modes.h>
14
15struct gud_device {
16 struct drm_device drm;
17 struct drm_plane plane;
18 struct drm_crtc crtc;
19 struct work_struct work;
20 u32 flags;
21 const struct drm_format_info *xrgb8888_emulation_format;
22
23 u16 *properties;
24 unsigned int num_properties;
25
26 unsigned int bulk_pipe;
27 void *bulk_buf;
28 size_t bulk_len;
29 struct sg_table bulk_sgt;
30
31 u8 compression;
32 void *lz4_comp_mem;
33 void *compress_buf;
34
35 u64 stats_length;
36 u64 stats_actual_length;
37 unsigned int stats_num_errors;
38
39 struct mutex ctrl_lock; /* Serialize get/set and status transfers */
40
41 struct mutex damage_lock; /* Protects the following members: */
42 struct drm_framebuffer *fb;
43 struct drm_rect damage;
44 bool prev_flush_failed;
45 void *shadow_buf;
46};
47
48static inline struct gud_device *to_gud_device(struct drm_device *drm)
49{
50 return container_of(drm, struct gud_device, drm);
51}
52
53static inline struct usb_device *gud_to_usb_device(struct gud_device *gdrm)
54{
55 return interface_to_usbdev(to_usb_interface(gdrm->drm.dev));
56}
57
58int gud_usb_get(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len);
59int gud_usb_set(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len);
60int gud_usb_get_u8(struct gud_device *gdrm, u8 request, u16 index, u8 *val);
61int gud_usb_set_u8(struct gud_device *gdrm, u8 request, u8 val);
62
63void gud_clear_damage(struct gud_device *gdrm);
64void gud_flush_work(struct work_struct *work);
65int gud_plane_atomic_check(struct drm_plane *plane,
66 struct drm_atomic_state *state);
67void gud_plane_atomic_update(struct drm_plane *plane,
68 struct drm_atomic_state *atomic_state);
69int gud_connector_fill_properties(struct drm_connector_state *connector_state,
70 struct gud_property_req *properties);
71int gud_get_connectors(struct gud_device *gdrm);
72
73/* Driver internal fourcc transfer formats */
74#define GUD_DRM_FORMAT_R1 0x00000122
75#define GUD_DRM_FORMAT_XRGB1111 0x03121722
76
77static inline u8 gud_from_fourcc(u32 fourcc)
78{
79 switch (fourcc) {
80 case GUD_DRM_FORMAT_R1:
81 return GUD_PIXEL_FORMAT_R1;
82 case DRM_FORMAT_R8:
83 return GUD_PIXEL_FORMAT_R8;
84 case GUD_DRM_FORMAT_XRGB1111:
85 return GUD_PIXEL_FORMAT_XRGB1111;
86 case DRM_FORMAT_RGB332:
87 return GUD_PIXEL_FORMAT_RGB332;
88 case DRM_FORMAT_RGB565:
89 return GUD_PIXEL_FORMAT_RGB565;
90 case DRM_FORMAT_RGB888:
91 return GUD_PIXEL_FORMAT_RGB888;
92 case DRM_FORMAT_XRGB8888:
93 return GUD_PIXEL_FORMAT_XRGB8888;
94 case DRM_FORMAT_ARGB8888:
95 return GUD_PIXEL_FORMAT_ARGB8888;
96 }
97
98 return 0;
99}
100
101static inline u32 gud_to_fourcc(u8 format)
102{
103 switch (format) {
104 case GUD_PIXEL_FORMAT_R1:
105 return GUD_DRM_FORMAT_R1;
106 case GUD_PIXEL_FORMAT_R8:
107 return DRM_FORMAT_R8;
108 case GUD_PIXEL_FORMAT_XRGB1111:
109 return GUD_DRM_FORMAT_XRGB1111;
110 case GUD_PIXEL_FORMAT_RGB332:
111 return DRM_FORMAT_RGB332;
112 case GUD_PIXEL_FORMAT_RGB565:
113 return DRM_FORMAT_RGB565;
114 case GUD_PIXEL_FORMAT_RGB888:
115 return DRM_FORMAT_RGB888;
116 case GUD_PIXEL_FORMAT_XRGB8888:
117 return DRM_FORMAT_XRGB8888;
118 case GUD_PIXEL_FORMAT_ARGB8888:
119 return DRM_FORMAT_ARGB8888;
120 }
121
122 return 0;
123}
124
125static inline void gud_from_display_mode(struct gud_display_mode_req *dst,
126 const struct drm_display_mode *src)
127{
128 u32 flags = src->flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;
129
130 if (src->type & DRM_MODE_TYPE_PREFERRED)
131 flags |= GUD_DISPLAY_MODE_FLAG_PREFERRED;
132
133 dst->clock = cpu_to_le32(src->clock);
134 dst->hdisplay = cpu_to_le16(src->hdisplay);
135 dst->hsync_start = cpu_to_le16(src->hsync_start);
136 dst->hsync_end = cpu_to_le16(src->hsync_end);
137 dst->htotal = cpu_to_le16(src->htotal);
138 dst->vdisplay = cpu_to_le16(src->vdisplay);
139 dst->vsync_start = cpu_to_le16(src->vsync_start);
140 dst->vsync_end = cpu_to_le16(src->vsync_end);
141 dst->vtotal = cpu_to_le16(src->vtotal);
142 dst->flags = cpu_to_le32(flags);
143}
144
145static inline void gud_to_display_mode(struct drm_display_mode *dst,
146 const struct gud_display_mode_req *src)
147{
148 u32 flags = le32_to_cpu(src->flags);
149
150 memset(dst, 0, sizeof(*dst));
151 dst->clock = le32_to_cpu(src->clock);
152 dst->hdisplay = le16_to_cpu(src->hdisplay);
153 dst->hsync_start = le16_to_cpu(src->hsync_start);
154 dst->hsync_end = le16_to_cpu(src->hsync_end);
155 dst->htotal = le16_to_cpu(src->htotal);
156 dst->vdisplay = le16_to_cpu(src->vdisplay);
157 dst->vsync_start = le16_to_cpu(src->vsync_start);
158 dst->vsync_end = le16_to_cpu(src->vsync_end);
159 dst->vtotal = le16_to_cpu(src->vtotal);
160 dst->flags = flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;
161 dst->type = DRM_MODE_TYPE_DRIVER;
162 if (flags & GUD_DISPLAY_MODE_FLAG_PREFERRED)
163 dst->type |= DRM_MODE_TYPE_PREFERRED;
164 drm_mode_set_name(dst);
165}
166
167#endif