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
70 * @fg_col_idx: Foreground color code (bit 3 = bold, bit 0-2 = color)
73 /* Things set up by the driver: */
77 enum video_log2_bpp bpix;
78 const char *vidconsole_drv_name;
82 * Things that are private to the uclass: don't use these in the
95 /* Placeholder - there are no video operations at present */
99 #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
102 * video_reserve() - Reserve frame-buffer memory for video devices
104 * Note: This function is for internal use.
106 * This uses the uclass platdata's @size and @align members to figure out
107 * a size and position for each frame buffer as part of the pre-relocation
108 * process of determining the post-relocation memory layout.
110 * gd->video_top is set to the initial value of *@addrp and gd->video_bottom
111 * is set to the final value.
113 * @addrp: On entry, the top of available memory. On exit, the new top,
114 * after allocating the required memory.
117 int video_reserve(ulong *addrp);
120 * video_clear() - Clear a device's frame buffer to background color.
122 * @dev: Device to clear
124 void video_clear(struct udevice *dev);
127 * video_sync() - Sync a device's frame buffer with its hardware
129 * Some frame buffers are cached or have a secondary frame buffer. This
130 * function syncs these up so that the current contents of the U-Boot frame
131 * buffer are displayed to the user.
133 * @dev: Device to sync
135 void video_sync(struct udevice *vid);
138 * video_sync_all() - Sync all devices' frame buffers with there hardware
140 * This calls video_sync() on all active video devices.
142 void video_sync_all(void);
145 * video_bmp_display() - Display a BMP file
147 * @dev: Device to display the bitmap on
148 * @bmp_image: Address of bitmap image to display
149 * @x: X position in pixels from the left
150 * @y: Y position in pixels from the top
151 * @align: true to adjust the coordinates to centre the image. If false
152 * the coordinates are used as is. If true:
154 * - if a coordinate is 0x7fff then the image will be centred in
156 * - if a coordinate is -ve then it will be offset to the
157 * left/top of the centre by that many pixels
158 * - if a coordinate is positive it will be used unchnaged.
159 * @return 0 if OK, -ve on error
161 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
165 * video_get_xsize() - Get the width of the display in pixels
167 * @dev: Device to check
168 * @return device frame buffer width in pixels
170 int video_get_xsize(struct udevice *dev);
173 * video_get_ysize() - Get the height of the display in pixels
175 * @dev: Device to check
176 * @return device frame buffer height in pixels
178 int video_get_ysize(struct udevice *dev);
181 * Set whether we need to flush the dcache when changing the image. This
184 * @param flush non-zero to flush cache after update, 0 to skip
186 void video_set_flush_dcache(struct udevice *dev, bool flush);
189 * Set default colors and attributes
191 * @priv device information
193 void video_set_default_colors(struct video_priv *priv);
195 #endif /* CONFIG_DM_VIDEO */
197 #ifndef CONFIG_DM_VIDEO
199 /* Video functions */
203 int video_init(void *videobase);
204 void video_putc(struct stdio_dev *dev, const char c);
205 void video_puts(struct stdio_dev *dev, const char *s);
208 * Display a BMP format bitmap on the screen
210 * @param bmp_image Address of BMP image
211 * @param x X position to draw image
212 * @param y Y position to draw image
214 int video_display_bitmap(ulong bmp_image, int x, int y);
217 * Get the width of the screen in pixels
219 * @return width of screen in pixels
221 int video_get_pixel_width(void);
224 * Get the height of the screen in pixels
226 * @return height of screen in pixels
228 int video_get_pixel_height(void);
231 * Get the number of text lines/rows on the screen
233 * @return number of rows
235 int video_get_screen_rows(void);
238 * Get the number of text columns on the screen
240 * @return number of columns
242 int video_get_screen_columns(void);
245 * Set the position of the text cursor
247 * @param col Column to place cursor (0 = left side)
248 * @param row Row to place cursor (0 = top line)
250 void video_position_cursor(unsigned col, unsigned row);
252 /* Clear the display */
253 void video_clear(void);
255 #if defined(CONFIG_FORMIKE)
256 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
257 unsigned int max_hz, unsigned int spi_mode);
259 #if defined(CONFIG_LG4573)
260 int lg4573_spi_startup(unsigned int bus, unsigned int cs,
261 unsigned int max_hz, unsigned int spi_mode);
265 * video_get_info_str() - obtain a board string: type, speed, etc.
267 * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled.
269 * line_number: location to place info string beside logo
270 * info: buffer for info string (empty if nothing to display on this
273 void video_get_info_str(int line_number, char *info);
275 #endif /* CONFIG_DM_VIDEO */