2 * Video uclass and legacy implementation
4 * Copyright (c) 2015 Google, Inc
6 * MPC823 Video Controller
7 * =======================
8 * (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
9 * AIRVENT SAM s.p.a - RIMINI(ITALY)
16 #ifdef CONFIG_DM_VIDEO
18 #include <stdio_dev.h>
22 struct video_uc_platdata {
29 VIDEO_ACTIVE_HIGH, /* Pins are active high */
30 VIDEO_ACTIVE_LOW, /* Pins are active low */
34 * Bits per pixel selector. Each value n is such that the bits-per-pixel is
47 * Convert enum video_log2_bpp to bytes and bits. Note we omit the outer
48 * brackets to allow multiplication by fractional pixels.
50 #define VNBYTES(bpix) (1 << (bpix)) / 8
52 #define VNBITS(bpix) (1 << (bpix))
55 * struct video_priv - Device information used by the video uclass
57 * @xsize: Number of pixel columns (e.g. 1366)
58 * @ysize: Number of pixels rows (e.g.. 768)
59 * @rot: Display rotation (0=none, 1=90 degrees clockwise, etc.)
60 * @bpix: Encoded bits per pixel (enum video_log2_bpp)
61 * @vidconsole_drv_name: Driver to use for the text console, NULL to
62 * select automatically
63 * @font_size: Font size in pixels (0 to use a default value)
65 * @fb_size: Frame buffer size
66 * @line_length: Length of each frame buffer line, in bytes. This can be
67 * set by the driver, but if not, the uclass will set it after
69 * @colour_fg: Foreground colour (pixel value)
70 * @colour_bg: Background colour (pixel value)
71 * @flush_dcache: true to enable flushing of the data cache after
73 * @cmap: Colour map for 8-bit-per-pixel displays
74 * @fg_col_idx: Foreground color code (bit 3 = bold, bit 0-2 = color)
75 * @bg_col_idx: Background color code (bit 3 = bold, bit 0-2 = color)
78 /* Things set up by the driver: */
82 enum video_log2_bpp bpix;
83 const char *vidconsole_drv_name;
87 * Things that are private to the uclass: don't use these in the
101 /* Placeholder - there are no video operations at present */
105 #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
108 * video_reserve() - Reserve frame-buffer memory for video devices
110 * Note: This function is for internal use.
112 * This uses the uclass platdata's @size and @align members to figure out
113 * a size and position for each frame buffer as part of the pre-relocation
114 * process of determining the post-relocation memory layout.
116 * gd->video_top is set to the initial value of *@addrp and gd->video_bottom
117 * is set to the final value.
119 * @addrp: On entry, the top of available memory. On exit, the new top,
120 * after allocating the required memory.
123 int video_reserve(ulong *addrp);
126 * video_clear() - Clear a device's frame buffer to background color.
128 * @dev: Device to clear
131 int video_clear(struct udevice *dev);
134 * video_sync() - Sync a device's frame buffer with its hardware
136 * Some frame buffers are cached or have a secondary frame buffer. This
137 * function syncs these up so that the current contents of the U-Boot frame
138 * buffer are displayed to the user.
140 * @dev: Device to sync
141 * @force: True to force a sync even if there was one recently (this is
142 * very expensive on sandbox)
144 void video_sync(struct udevice *vid, bool force);
147 * video_sync_all() - Sync all devices' frame buffers with there hardware
149 * This calls video_sync() on all active video devices.
151 void video_sync_all(void);
154 * video_bmp_display() - Display a BMP file
156 * @dev: Device to display the bitmap on
157 * @bmp_image: Address of bitmap image to display
158 * @x: X position in pixels from the left
159 * @y: Y position in pixels from the top
160 * @align: true to adjust the coordinates to centre the image. If false
161 * the coordinates are used as is. If true:
163 * - if a coordinate is 0x7fff then the image will be centred in
165 * - if a coordinate is -ve then it will be offset to the
166 * left/top of the centre by that many pixels
167 * - if a coordinate is positive it will be used unchnaged.
168 * @return 0 if OK, -ve on error
170 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
174 * video_get_xsize() - Get the width of the display in pixels
176 * @dev: Device to check
177 * @return device frame buffer width in pixels
179 int video_get_xsize(struct udevice *dev);
182 * video_get_ysize() - Get the height of the display in pixels
184 * @dev: Device to check
185 * @return device frame buffer height in pixels
187 int video_get_ysize(struct udevice *dev);
190 * Set whether we need to flush the dcache when changing the image. This
193 * @param flush non-zero to flush cache after update, 0 to skip
195 void video_set_flush_dcache(struct udevice *dev, bool flush);
198 * Set default colors and attributes
201 * @invert true to invert colours
203 void video_set_default_colors(struct udevice *dev, bool invert);
205 #endif /* CONFIG_DM_VIDEO */
207 #ifndef CONFIG_DM_VIDEO
209 /* Video functions */
212 * Display a BMP format bitmap on the screen
214 * @param bmp_image Address of BMP image
215 * @param x X position to draw image
216 * @param y Y position to draw image
218 int video_display_bitmap(ulong bmp_image, int x, int y);
221 * Get the width of the screen in pixels
223 * @return width of screen in pixels
225 int video_get_pixel_width(void);
228 * Get the height of the screen in pixels
230 * @return height of screen in pixels
232 int video_get_pixel_height(void);
235 * Get the number of text lines/rows on the screen
237 * @return number of rows
239 int video_get_screen_rows(void);
242 * Get the number of text columns on the screen
244 * @return number of columns
246 int video_get_screen_columns(void);
249 * Set the position of the text cursor
251 * @param col Column to place cursor (0 = left side)
252 * @param row Row to place cursor (0 = top line)
254 void video_position_cursor(unsigned col, unsigned row);
256 /* Clear the display */
257 void video_clear(void);
259 #if defined(CONFIG_FORMIKE)
260 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
261 unsigned int max_hz, unsigned int spi_mode);
263 #if defined(CONFIG_LG4573)
264 int lg4573_spi_startup(unsigned int bus, unsigned int cs,
265 unsigned int max_hz, unsigned int spi_mode);
269 * video_get_info_str() - obtain a board string: type, speed, etc.
271 * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled.
273 * line_number: location to place info string beside logo
274 * info: buffer for info string (empty if nothing to display on this
277 void video_get_info_str(int line_number, char *info);
279 #endif /* !CONFIG_DM_VIDEO */