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 * Bits per pixel selector. Each value n is such that the bits-per-pixel is
40 * Convert enum video_log2_bpp to bytes and bits. Note we omit the outer
41 * brackets to allow multiplication by fractional pixels.
43 #define VNBYTES(bpix) (1 << (bpix)) / 8
45 #define VNBITS(bpix) (1 << (bpix))
48 * struct video_priv - Device information used by the video uclass
50 * @xsize: Number of pixel columns (e.g. 1366)
51 * @ysize: Number of pixels rows (e.g.. 768)
52 * @tor: Display rotation (0=none, 1=90 degrees clockwise, etc.)
53 * @bpix: Encoded bits per pixel
55 * @fb_size: Frame buffer size
56 * @line_length: Length of each frame buffer line, in bytes
57 * @colour_fg: Foreground colour (pixel value)
58 * @colour_bg: Background colour (pixel value)
59 * @flush_dcache: true to enable flushing of the data cache after
61 * @cmap: Colour map for 8-bit-per-pixel displays
64 /* Things set up by the driver: */
68 enum video_log2_bpp bpix;
71 * Things that are private to the uclass: don't use these in the
83 /* Placeholder - there are no video operations at present */
87 #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
90 * video_reserve() - Reserve frame-buffer memory for video devices
92 * Note: This function is for internal use.
94 * This uses the uclass platdata's @size and @align members to figure out
95 * a size and position for each frame buffer as part of the pre-relocation
96 * process of determining the post-relocation memory layout.
98 * gd->video_top is set to the initial value of *@addrp and gd->video_bottom
99 * is set to the final value.
101 * @addrp: On entry, the top of available memory. On exit, the new top,
102 * after allocating the required memory.
105 int video_reserve(ulong *addrp);
108 * video_sync() - Sync a device's frame buffer with its hardware
110 * Some frame buffers are cached or have a secondary frame buffer. This
111 * function syncs these up so that the current contents of the U-Boot frame
112 * buffer are displayed to the user.
114 * @dev: Device to sync
116 void video_sync(struct udevice *vid);
119 * video_sync_all() - Sync all devices' frame buffers with there hardware
121 * This calls video_sync() on all active video devices.
123 void video_sync_all(void);
126 * video_bmp_display() - Display a BMP file
128 * @dev: Device to display the bitmap on
129 * @bmp_image: Address of bitmap image to display
130 * @x: X position in pixels from the left
131 * @y: Y position in pixels from the top
132 * @align: true to adjust the coordinates to centre the image. If false
133 * the coordinates are used as is. If true:
135 * - if a coordinate is 0x7fff then the image will be centred in
137 * - if a coordinate is -ve then it will be offset to the
138 * left/top of the centre by that many pixels
139 * - if a coordinate is positive it will be used unchnaged.
140 * @return 0 if OK, -ve on error
142 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
146 * video_get_xsize() - Get the width of the display in pixels
148 * @dev: Device to check
149 * @return device frame buffer width in pixels
151 int video_get_xsize(struct udevice *dev);
154 * video_get_ysize() - Get the height of the display in pixels
156 * @dev: Device to check
157 * @return device frame buffer height in pixels
159 int video_get_ysize(struct udevice *dev);
162 * Set whether we need to flush the dcache when changing the image. This
165 * @param flush non-zero to flush cache after update, 0 to skip
167 void video_set_flush_dcache(struct udevice *dev, bool flush);
169 #endif /* CONFIG_DM_VIDEO */
171 #ifndef CONFIG_DM_VIDEO
173 /* Video functions */
177 int video_init(void *videobase);
178 void video_putc(struct stdio_dev *dev, const char c);
179 void video_puts(struct stdio_dev *dev, const char *s);
182 * Display a BMP format bitmap on the screen
184 * @param bmp_image Address of BMP image
185 * @param x X position to draw image
186 * @param y Y position to draw image
188 int video_display_bitmap(ulong bmp_image, int x, int y);
191 * Get the width of the screen in pixels
193 * @return width of screen in pixels
195 int video_get_pixel_width(void);
198 * Get the height of the screen in pixels
200 * @return height of screen in pixels
202 int video_get_pixel_height(void);
205 * Get the number of text lines/rows on the screen
207 * @return number of rows
209 int video_get_screen_rows(void);
212 * Get the number of text columns on the screen
214 * @return number of columns
216 int video_get_screen_columns(void);
219 * Set the position of the text cursor
221 * @param col Column to place cursor (0 = left side)
222 * @param row Row to place cursor (0 = top line)
224 void video_position_cursor(unsigned col, unsigned row);
226 /* Clear the display */
227 void video_clear(void);
229 #if defined(CONFIG_FORMIKE)
230 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
231 unsigned int max_hz, unsigned int spi_mode);
233 #if defined(CONFIG_LG4573)
234 int lg4573_spi_startup(unsigned int bus, unsigned int cs,
235 unsigned int max_hz, unsigned int spi_mode);
238 #endif /* CONFIG_DM_VIDEO */