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![Simon Glass](/assets/img/avatar_default.png)
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
163 lines
3.1 KiB
C
163 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018
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* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
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*/
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#include <common.h>
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#include <display.h>
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#include <dm.h>
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#include <malloc.h>
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#include <video_osd.h>
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#include "sandbox_osd.h"
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struct sandbox_osd_priv {
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uint width;
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uint height;
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u16 *buf;
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};
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static const struct udevice_id sandbox_osd_ids[] = {
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{ .compatible = "sandbox,sandbox_osd" },
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{ }
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};
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inline u16 make_memval(u8 chr, u8 color)
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{
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return chr * 0x100 + color;
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}
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int sandbox_osd_get_info(struct udevice *dev, struct video_osd_info *info)
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{
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struct sandbox_osd_priv *priv = dev_get_priv(dev);
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info->width = priv->width;
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info->height = priv->height;
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info->major_version = 1;
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info->minor_version = 0;
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return 0;
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}
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int sandbox_osd_set_mem(struct udevice *dev, uint col, uint row, u8 *buf,
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size_t buflen, uint count)
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{
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struct sandbox_osd_priv *priv = dev_get_priv(dev);
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int pos;
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u8 *mem = (u8 *)priv->buf;
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int i;
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pos = 2 * (row * priv->width + col);
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if (pos >= 2 * (priv->width * priv->height))
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return -EINVAL;
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for (i = 0; i < count; i++)
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memcpy(mem + pos + (i * buflen), buf, buflen);
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return 0;
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}
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int _sandbox_osd_set_size(struct udevice *dev, uint col, uint row)
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{
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struct sandbox_osd_priv *priv = dev_get_priv(dev);
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int i;
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uint size;
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priv->width = col;
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priv->height = row;
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size = priv->width * priv->height;
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if (!priv->buf)
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priv->buf = calloc(size, sizeof(u16));
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else
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priv->buf = realloc(priv->buf, size * sizeof(u16));
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if (!priv->buf)
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return -ENOMEM;
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/* Fill OSD with black spaces */
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for (i = 0; i < size; i++)
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priv->buf[i] = make_memval(' ', 'k');
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return 0;
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}
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int sandbox_osd_set_size(struct udevice *dev, uint col, uint row)
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{
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return _sandbox_osd_set_size(dev, col, row);
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}
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int sandbox_osd_print(struct udevice *dev, uint col, uint row, ulong color,
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char *text)
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{
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struct sandbox_osd_priv *priv = dev_get_priv(dev);
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char cval;
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char *p;
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int pos;
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if (col >= priv->width || row >= priv->height)
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return -EINVAL;
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switch (color) {
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case COLOR_BLACK:
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cval = 'k';
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break;
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case COLOR_WHITE:
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cval = 'w';
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break;
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case COLOR_RED:
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cval = 'r';
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break;
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case COLOR_GREEN:
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cval = 'g';
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break;
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case COLOR_BLUE:
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cval = 'b';
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break;
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default:
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return -EINVAL;
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}
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p = text;
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pos = row * priv->width + col;
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while (*p)
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priv->buf[pos++] = make_memval(*(p++), cval);
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return 0;
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}
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int sandbox_osd_get_mem(struct udevice *dev, u8 *buf, size_t buflen)
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{
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struct sandbox_osd_priv *priv = dev_get_priv(dev);
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uint memsize = 2 * (priv->width * priv->height);
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if (buflen < memsize)
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return -EINVAL;
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memcpy(buf, priv->buf, memsize);
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return 0;
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}
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static const struct video_osd_ops sandbox_osd_ops = {
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.get_info = sandbox_osd_get_info,
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.set_mem = sandbox_osd_set_mem,
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.set_size = sandbox_osd_set_size,
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.print = sandbox_osd_print,
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};
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int sandbox_osd_probe(struct udevice *dev)
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{
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return _sandbox_osd_set_size(dev, 10, 10);
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}
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U_BOOT_DRIVER(sandbox_osd_drv) = {
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.name = "sandbox_osd_drv",
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.id = UCLASS_VIDEO_OSD,
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.ops = &sandbox_osd_ops,
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.of_match = sandbox_osd_ids,
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.probe = sandbox_osd_probe,
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.priv_auto = sizeof(struct sandbox_osd_priv),
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};
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