1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/*
* Video uclass and legacy implementation
*
* Copyright (c) 2015 Google, Inc
*
* MPC823 Video Controller
* =======================
* (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
* AIRVENT SAM s.p.a - RIMINI(ITALY)
*
*/
#ifndef _VIDEO_H_
#define _VIDEO_H_
#ifdef CONFIG_DM_VIDEO
#include <stdio_dev.h>
struct video_uc_platdata {
uint align;
uint size;
ulong base;
};
/*
* Bits per pixel selector. Each value n is such that the bits-per-pixel is
* 2 ^ n
*/
enum video_log2_bpp {
VIDEO_BPP1 = 0,
VIDEO_BPP2,
VIDEO_BPP4,
VIDEO_BPP8,
VIDEO_BPP16,
VIDEO_BPP32,
};
/*
* Convert enum video_log2_bpp to bytes and bits. Note we omit the outer
* brackets to allow multiplication by fractional pixels.
*/
#define VNBYTES(bpix) (1 << (bpix)) / 8
#define VNBITS(bpix) (1 << (bpix))
/**
* struct video_priv - Device information used by the video uclass
*
* @xsize: Number of pixel columns (e.g. 1366)
* @ysize: Number of pixels rows (e.g.. 768)
* @tor: Display rotation (0=none, 1=90 degrees clockwise, etc.)
* @bpix: Encoded bits per pixel
* @vidconsole_drv_name: Driver to use for the text console, NULL to
* select automatically
* @font_size: Font size in pixels (0 to use a default value)
* @fb: Frame buffer
* @fb_size: Frame buffer size
* @line_length: Length of each frame buffer line, in bytes
* @colour_fg: Foreground colour (pixel value)
* @colour_bg: Background colour (pixel value)
* @flush_dcache: true to enable flushing of the data cache after
* the LCD is updated
* @cmap: Colour map for 8-bit-per-pixel displays
*/
struct video_priv {
/* Things set up by the driver: */
ushort xsize;
ushort ysize;
ushort rot;
enum video_log2_bpp bpix;
const char *vidconsole_drv_name;
int font_size;
/*
* Things that are private to the uclass: don't use these in the
* driver
*/
void *fb;
int fb_size;
int line_length;
int colour_fg;
int colour_bg;
bool flush_dcache;
ushort *cmap;
};
/* Placeholder - there are no video operations at present */
struct video_ops {
};
#define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
/**
* video_reserve() - Reserve frame-buffer memory for video devices
*
* Note: This function is for internal use.
*
* This uses the uclass platdata's @size and @align members to figure out
* a size and position for each frame buffer as part of the pre-relocation
* process of determining the post-relocation memory layout.
*
* gd->video_top is set to the initial value of *@addrp and gd->video_bottom
* is set to the final value.
*
* @addrp: On entry, the top of available memory. On exit, the new top,
* after allocating the required memory.
* @return 0
*/
int video_reserve(ulong *addrp);
/**
* video_sync() - Sync a device's frame buffer with its hardware
*
* Some frame buffers are cached or have a secondary frame buffer. This
* function syncs these up so that the current contents of the U-Boot frame
* buffer are displayed to the user.
*
* @dev: Device to sync
*/
void video_sync(struct udevice *vid);
/**
* video_sync_all() - Sync all devices' frame buffers with there hardware
*
* This calls video_sync() on all active video devices.
*/
void video_sync_all(void);
/**
* video_bmp_display() - Display a BMP file
*
* @dev: Device to display the bitmap on
* @bmp_image: Address of bitmap image to display
* @x: X position in pixels from the left
* @y: Y position in pixels from the top
* @align: true to adjust the coordinates to centre the image. If false
* the coordinates are used as is. If true:
*
* - if a coordinate is 0x7fff then the image will be centred in
* that direction
* - if a coordinate is -ve then it will be offset to the
* left/top of the centre by that many pixels
* - if a coordinate is positive it will be used unchnaged.
* @return 0 if OK, -ve on error
*/
int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
bool align);
/**
* video_get_xsize() - Get the width of the display in pixels
*
* @dev: Device to check
* @return device frame buffer width in pixels
*/
int video_get_xsize(struct udevice *dev);
/**
* video_get_ysize() - Get the height of the display in pixels
*
* @dev: Device to check
* @return device frame buffer height in pixels
*/
int video_get_ysize(struct udevice *dev);
/**
* Set whether we need to flush the dcache when changing the image. This
* defaults to off.
*
* @param flush non-zero to flush cache after update, 0 to skip
*/
void video_set_flush_dcache(struct udevice *dev, bool flush);
#endif /* CONFIG_DM_VIDEO */
#ifndef CONFIG_DM_VIDEO
/* Video functions */
struct stdio_dev;
int video_init(void *videobase);
void video_putc(struct stdio_dev *dev, const char c);
void video_puts(struct stdio_dev *dev, const char *s);
/**
* Display a BMP format bitmap on the screen
*
* @param bmp_image Address of BMP image
* @param x X position to draw image
* @param y Y position to draw image
*/
int video_display_bitmap(ulong bmp_image, int x, int y);
/**
* Get the width of the screen in pixels
*
* @return width of screen in pixels
*/
int video_get_pixel_width(void);
/**
* Get the height of the screen in pixels
*
* @return height of screen in pixels
*/
int video_get_pixel_height(void);
/**
* Get the number of text lines/rows on the screen
*
* @return number of rows
*/
int video_get_screen_rows(void);
/**
* Get the number of text columns on the screen
*
* @return number of columns
*/
int video_get_screen_columns(void);
/**
* Set the position of the text cursor
*
* @param col Column to place cursor (0 = left side)
* @param row Row to place cursor (0 = top line)
*/
void video_position_cursor(unsigned col, unsigned row);
/* Clear the display */
void video_clear(void);
#if defined(CONFIG_FORMIKE)
int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode);
#endif
#if defined(CONFIG_LG4573)
int lg4573_spi_startup(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode);
#endif
#endif /* CONFIG_DM_VIDEO */
#endif
|
