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>
20 struct video_uc_platdata {
27 VIDEO_ACTIVE_HIGH, /* Pins are active high */
28 VIDEO_ACTIVE_LOW, /* Pins are active low */
32 * Bits per pixel selector. Each value n is such that the bits-per-pixel is
45 * Convert enum video_log2_bpp to bytes and bits. Note we omit the outer
46 * brackets to allow multiplication by fractional pixels.
48 #define VNBYTES(bpix) (1 << (bpix)) / 8
50 #define VNBITS(bpix) (1 << (bpix))
53 * struct video_priv - Device information used by the video uclass
55 * @xsize: Number of pixel columns (e.g. 1366)
56 * @ysize: Number of pixels rows (e.g.. 768)
57 * @rot: Display rotation (0=none, 1=90 degrees clockwise, etc.)
58 * @bpix: Encoded bits per pixel
59 * @vidconsole_drv_name: Driver to use for the text console, NULL to
60 * select automatically
61 * @font_size: Font size in pixels (0 to use a default value)
63 * @fb_size: Frame buffer size
64 * @line_length: Length of each frame buffer line, in bytes
65 * @colour_fg: Foreground colour (pixel value)
66 * @colour_bg: Background colour (pixel value)
67 * @flush_dcache: true to enable flushing of the data cache after
69 * @cmap: Colour map for 8-bit-per-pixel displays
72 /* Things set up by the driver: */
76 enum video_log2_bpp bpix;
77 const char *vidconsole_drv_name;
81 * Things that are private to the uclass: don't use these in the
93 /* Placeholder - there are no video operations at present */
97 #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
100 * video_reserve() - Reserve frame-buffer memory for video devices
102 * Note: This function is for internal use.
104 * This uses the uclass platdata's @size and @align members to figure out
105 * a size and position for each frame buffer as part of the pre-relocation
106 * process of determining the post-relocation memory layout.
108 * gd->video_top is set to the initial value of *@addrp and gd->video_bottom
109 * is set to the final value.
111 * @addrp: On entry, the top of available memory. On exit, the new top,
112 * after allocating the required memory.
115 int video_reserve(ulong *addrp);
118 * video_sync() - Sync a device's frame buffer with its hardware
120 * Some frame buffers are cached or have a secondary frame buffer. This
121 * function syncs these up so that the current contents of the U-Boot frame
122 * buffer are displayed to the user.
124 * @dev: Device to sync
126 void video_sync(struct udevice *vid);
129 * video_sync_all() - Sync all devices' frame buffers with there hardware
131 * This calls video_sync() on all active video devices.
133 void video_sync_all(void);
136 * video_bmp_display() - Display a BMP file
138 * @dev: Device to display the bitmap on
139 * @bmp_image: Address of bitmap image to display
140 * @x: X position in pixels from the left
141 * @y: Y position in pixels from the top
142 * @align: true to adjust the coordinates to centre the image. If false
143 * the coordinates are used as is. If true:
145 * - if a coordinate is 0x7fff then the image will be centred in
147 * - if a coordinate is -ve then it will be offset to the
148 * left/top of the centre by that many pixels
149 * - if a coordinate is positive it will be used unchnaged.
150 * @return 0 if OK, -ve on error
152 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
156 * video_get_xsize() - Get the width of the display in pixels
158 * @dev: Device to check
159 * @return device frame buffer width in pixels
161 int video_get_xsize(struct udevice *dev);
164 * video_get_ysize() - Get the height of the display in pixels
166 * @dev: Device to check
167 * @return device frame buffer height in pixels
169 int video_get_ysize(struct udevice *dev);
172 * Set whether we need to flush the dcache when changing the image. This
175 * @param flush non-zero to flush cache after update, 0 to skip
177 void video_set_flush_dcache(struct udevice *dev, bool flush);
179 #endif /* CONFIG_DM_VIDEO */
181 #ifndef CONFIG_DM_VIDEO
183 /* Video functions */
187 int video_init(void *videobase);
188 void video_putc(struct stdio_dev *dev, const char c);
189 void video_puts(struct stdio_dev *dev, const char *s);
192 * Display a BMP format bitmap on the screen
194 * @param bmp_image Address of BMP image
195 * @param x X position to draw image
196 * @param y Y position to draw image
198 int video_display_bitmap(ulong bmp_image, int x, int y);
201 * Get the width of the screen in pixels
203 * @return width of screen in pixels
205 int video_get_pixel_width(void);
208 * Get the height of the screen in pixels
210 * @return height of screen in pixels
212 int video_get_pixel_height(void);
215 * Get the number of text lines/rows on the screen
217 * @return number of rows
219 int video_get_screen_rows(void);
222 * Get the number of text columns on the screen
224 * @return number of columns
226 int video_get_screen_columns(void);
229 * Set the position of the text cursor
231 * @param col Column to place cursor (0 = left side)
232 * @param row Row to place cursor (0 = top line)
234 void video_position_cursor(unsigned col, unsigned row);
236 /* Clear the display */
237 void video_clear(void);
239 #if defined(CONFIG_FORMIKE)
240 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
241 unsigned int max_hz, unsigned int spi_mode);
243 #if defined(CONFIG_LG4573)
244 int lg4573_spi_startup(unsigned int bus, unsigned int cs,
245 unsigned int max_hz, unsigned int spi_mode);
249 * video_get_info_str() - obtain a board string: type, speed, etc.
251 * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled.
253 * line_number: location to place info string beside logo
254 * info: buffer for info string (empty if nothing to display on this
257 void video_get_info_str(int line_number, char *info);
259 #endif /* CONFIG_DM_VIDEO */