1
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#include <drm/drm_simple_kms_helper.h>
15
16struct gud_device {
17 struct drm_device drm;
18 struct drm_simple_display_pipe pipe;
19 struct device *dmadev;
20 struct work_struct work;
21 u32 flags;
22 const struct drm_format_info *xrgb8888_emulation_format;
23
24 u16 *properties;
25 unsigned int num_properties;
26
27 unsigned int bulk_pipe;
28 void *bulk_buf;
29 size_t bulk_len;
30 struct sg_table bulk_sgt;
31
32 u8 compression;
33 void *lz4_comp_mem;
34 void *compress_buf;
35
36 u64 stats_length;
37 u64 stats_actual_length;
38 unsigned int stats_num_errors;
39
40 struct mutex ctrl_lock;
41
42 struct mutex damage_lock;
43 struct drm_framebuffer *fb;
44 struct drm_rect damage;
45 bool prev_flush_failed;
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_pipe_check(struct drm_simple_display_pipe *pipe,
66 struct drm_plane_state *new_plane_state,
67 struct drm_crtc_state *new_crtc_state);
68void gud_pipe_update(struct drm_simple_display_pipe *pipe,
69 struct drm_plane_state *old_state);
70int gud_connector_fill_properties(struct drm_connector_state *connector_state,
71 struct gud_property_req *properties);
72int gud_get_connectors(struct gud_device *gdrm);
73
74
75#define GUD_DRM_FORMAT_R1 0x00000122
76#define GUD_DRM_FORMAT_XRGB1111 0x03121722
77
78static inline u8 gud_from_fourcc(u32 fourcc)
79{
80 switch (fourcc) {
81 case GUD_DRM_FORMAT_R1:
82 return GUD_PIXEL_FORMAT_R1;
83 case GUD_DRM_FORMAT_XRGB1111:
84 return GUD_PIXEL_FORMAT_XRGB1111;
85 case DRM_FORMAT_RGB565:
86 return GUD_PIXEL_FORMAT_RGB565;
87 case DRM_FORMAT_XRGB8888:
88 return GUD_PIXEL_FORMAT_XRGB8888;
89 case DRM_FORMAT_ARGB8888:
90 return GUD_PIXEL_FORMAT_ARGB8888;
91 }
92
93 return 0;
94}
95
96static inline u32 gud_to_fourcc(u8 format)
97{
98 switch (format) {
99 case GUD_PIXEL_FORMAT_R1:
100 return GUD_DRM_FORMAT_R1;
101 case GUD_PIXEL_FORMAT_XRGB1111:
102 return GUD_DRM_FORMAT_XRGB1111;
103 case GUD_PIXEL_FORMAT_RGB565:
104 return DRM_FORMAT_RGB565;
105 case GUD_PIXEL_FORMAT_XRGB8888:
106 return DRM_FORMAT_XRGB8888;
107 case GUD_PIXEL_FORMAT_ARGB8888:
108 return DRM_FORMAT_ARGB8888;
109 }
110
111 return 0;
112}
113
114static inline void gud_from_display_mode(struct gud_display_mode_req *dst,
115 const struct drm_display_mode *src)
116{
117 u32 flags = src->flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;
118
119 if (src->type & DRM_MODE_TYPE_PREFERRED)
120 flags |= GUD_DISPLAY_MODE_FLAG_PREFERRED;
121
122 dst->clock = cpu_to_le32(src->clock);
123 dst->hdisplay = cpu_to_le16(src->hdisplay);
124 dst->hsync_start = cpu_to_le16(src->hsync_start);
125 dst->hsync_end = cpu_to_le16(src->hsync_end);
126 dst->htotal = cpu_to_le16(src->htotal);
127 dst->vdisplay = cpu_to_le16(src->vdisplay);
128 dst->vsync_start = cpu_to_le16(src->vsync_start);
129 dst->vsync_end = cpu_to_le16(src->vsync_end);
130 dst->vtotal = cpu_to_le16(src->vtotal);
131 dst->flags = cpu_to_le32(flags);
132}
133
134static inline void gud_to_display_mode(struct drm_display_mode *dst,
135 const struct gud_display_mode_req *src)
136{
137 u32 flags = le32_to_cpu(src->flags);
138
139 memset(dst, 0, sizeof(*dst));
140 dst->clock = le32_to_cpu(src->clock);
141 dst->hdisplay = le16_to_cpu(src->hdisplay);
142 dst->hsync_start = le16_to_cpu(src->hsync_start);
143 dst->hsync_end = le16_to_cpu(src->hsync_end);
144 dst->htotal = le16_to_cpu(src->htotal);
145 dst->vdisplay = le16_to_cpu(src->vdisplay);
146 dst->vsync_start = le16_to_cpu(src->vsync_start);
147 dst->vsync_end = le16_to_cpu(src->vsync_end);
148 dst->vtotal = le16_to_cpu(src->vtotal);
149 dst->flags = flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;
150 dst->type = DRM_MODE_TYPE_DRIVER;
151 if (flags & GUD_DISPLAY_MODE_FLAG_PREFERRED)
152 dst->type |= DRM_MODE_TYPE_PREFERRED;
153 drm_mode_set_name(dst);
154}
155
156#endif
157
