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video: Add font functions to the vidconsole API

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Support for fonts currently depends on the type of vidconsole in use. Add
two new methods to enumerate fonts and to set the font.

Fix a few other method comments while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-01-06 08:52:32 -06:00 committed by Tom Rini
parent 5abd8bb0f2
commit 0e38bd848d
5 changed files with 127 additions and 25 deletions
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11
cmd/font.c
View file

@ -15,7 +15,11 @@
static int do_font_list(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
vidconsole_list_fonts();
struct udevice *dev;
if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
return CMD_RET_FAILURE;
vidconsole_list_fonts(dev);
return 0;
}
@ -47,6 +51,7 @@ static int do_font_select(struct cmd_tbl *cmdtp, int flag, int argc,
static int do_font_size(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
const char *font_name;
struct udevice *dev;
uint size;
int ret;
@ -56,9 +61,11 @@ static int do_font_size(struct cmd_tbl *cmdtp, int flag, int argc,
if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
return CMD_RET_FAILURE;
font_name = vidconsole_get_font_size(dev, &size);
size = dectoul(argv[1], NULL);
ret = vidconsole_select_font(dev, NULL, size);
ret = vidconsole_select_font(dev, font_name, size);
if (ret) {
printf("Failed (error %d)\n", ret);
return CMD_RET_FAILURE;

27
drivers/video/console_truetype.c
View file

@ -584,14 +584,20 @@ static struct font_info *console_truetype_find_font(void)
return NULL;
}
void vidconsole_list_fonts(void)
int console_truetype_get_font(struct udevice *dev, int seq,
struct vidfont_info *info)
{
struct font_info *tab;
int i;
for (tab = font_table; tab->begin; tab++) {
if (abs(tab->begin - tab->end) > 4)
printf("%s\n", tab->name);
for (i = 0, tab = font_table; tab->begin; tab++, i++) {
if (i == seq && font_valid(tab)) {
info->name = tab->name;
return 0;
}
}
return -ENOENT;
}
/**
@ -674,7 +680,8 @@ static void select_metrics(struct udevice *dev, struct console_tt_metrics *met)
vc_priv->tab_width_frac = VID_TO_POS(met->font_size) * 8 / 2;
}
int vidconsole_select_font(struct udevice *dev, const char *name, uint size)
static int truetype_select_font(struct udevice *dev, const char *name,
uint size)
{
struct console_tt_priv *priv = dev_get_priv(dev);
struct console_tt_metrics *met;
@ -684,7 +691,7 @@ int vidconsole_select_font(struct udevice *dev, const char *name, uint size)
if (!size)
size = CONFIG_CONSOLE_TRUETYPE_SIZE;
if (!name)
name = priv->cur_met->font_name;
name = font_table->name;
met = find_metrics(dev, name, size);
if (!met) {
@ -694,7 +701,9 @@ int vidconsole_select_font(struct udevice *dev, const char *name, uint size)
int ret;
ret = truetype_add_metrics(dev,
tab->name, size, tab->begin);
tab->name,
size,
tab->begin);
if (ret < 0)
return log_msg_ret("add", ret);
@ -715,7 +724,7 @@ int vidconsole_select_font(struct udevice *dev, const char *name, uint size)
return 0;
}
const char *vidconsole_get_font(struct udevice *dev, uint *sizep)
const char *vidconsole_get_font_size(struct udevice *dev, uint *sizep)
{
struct console_tt_priv *priv = dev_get_priv(dev);
struct console_tt_metrics *met = priv->cur_met;
@ -763,6 +772,8 @@ struct vidconsole_ops console_truetype_ops = {
.set_row = console_truetype_set_row,
.backspace = console_truetype_backspace,
.entry_start = console_truetype_entry_start,
.get_font = console_truetype_get_font,
.select_font = truetype_select_font,
};
U_BOOT_DRIVER(vidconsole_truetype) = {

33
drivers/video/vidconsole-uclass.c
View file

@ -557,6 +557,39 @@ static void vidconsole_puts(struct stdio_dev *sdev, const char *s)
}
}
void vidconsole_list_fonts(struct udevice *dev)
{
struct vidfont_info info;
int ret, i;
for (i = 0, ret = 0; !ret; i++) {
ret = vidconsole_get_font(dev, i, &info);
if (!ret)
printf("%s\n", info.name);
}
}
int vidconsole_get_font(struct udevice *dev, int seq,
struct vidfont_info *info)
{
struct vidconsole_ops *ops = vidconsole_get_ops(dev);
if (!ops->get_font)
return -ENOSYS;
return ops->get_font(dev, seq, info);
}
int vidconsole_select_font(struct udevice *dev, const char *name, uint size)
{
struct vidconsole_ops *ops = vidconsole_get_ops(dev);
if (!ops->select_font)
return -ENOSYS;
return ops->select_font(dev, name, size);
}
/* Set up the number of rows and colours (rotated drivers override this) */
static int vidconsole_pre_probe(struct udevice *dev)
{

75
include/video_console.h
View file

@ -62,6 +62,15 @@ struct vidconsole_priv {
char escape_buf[32];
};
/**
* struct vidfont_info - information about a font
*
* @name: Font name, e.g. nimbus_sans_l_regular
*/
struct vidfont_info {
const char *name;
};
/**
* struct vidconsole_ops - Video console operations
*
@ -111,6 +120,9 @@ struct vidconsole_ops {
/**
* entry_start() - Indicate that text entry is starting afresh
*
* @dev: Device to adjust
* Returns: 0 on success, -ve on error
*
* Consoles which use proportional fonts need to track the position of
* each character output so that backspace will return to the correct
* place. This method signals to the console driver that a new entry
@ -123,6 +135,9 @@ struct vidconsole_ops {
/**
* backspace() - Handle erasing the last character
*
* @dev: Device to adjust
* Returns: 0 on success, -ve on error
*
* With proportional fonts the vidconsole uclass cannot itself erase
* the previous character. This optional method will be called when
* a backspace is needed. The driver should erase the previous
@ -133,11 +148,53 @@ struct vidconsole_ops {
* characters.
*/
int (*backspace)(struct udevice *dev);
/**
* get_font() - Obtain information about a font (optional)
*
* @dev: Device to check
* @seq: Font number to query (0=first, 1=second, etc.)
* @info: Returns font information on success
* Returns: 0 on success, -ENOENT if no such font
*/
int (*get_font)(struct udevice *dev, int seq,
struct vidfont_info *info);
/**
* select_font() - Select a particular font by name / size
*
* @dev: Device to adjust
* @name: Font name to use (NULL to use default)
* @size: Font size to use (0 to use default)
* Returns: 0 on success, -ENOENT if no such font
*/
int (*select_font)(struct udevice *dev, const char *name, uint size);
};
/* Get a pointer to the driver operations for a video console device */
#define vidconsole_get_ops(dev) ((struct vidconsole_ops *)(dev)->driver->ops)
/**
* vidconsole_get_font() - Obtain information about a font
*
* @dev: Device to check
* @seq: Font number to query (0=first, 1=second, etc.)
* @info: Returns font information on success
* Returns: 0 on success, -ENOENT if no such font, -ENOSYS if there is no such
* method
*/
int vidconsole_get_font(struct udevice *dev, int seq,
struct vidfont_info *info);
/**
* vidconsole_select_font() - Select a particular font by name / size
*
* @dev: Device to adjust
* @name: Font name to use (NULL to use default)
* @size: Font size to use (0 to use default)
*/
int vidconsole_select_font(struct udevice *dev, const char *name, uint size);
/**
* vidconsole_putc_xy() - write a single character to a position
*
@ -234,27 +291,21 @@ void vidconsole_set_cursor_pos(struct udevice *dev, int x, int y);
/**
* vidconsole_list_fonts() - List the available fonts
*
* This shows a list on the console
*/
void vidconsole_list_fonts(void);
/**
* vidconsole_select_font() - Select a font to use
* @dev: vidconsole device to check
*
* @dev: vidconsole device
* @name: Font name
* @size: Size of the font (norminal pixel height) or 0 for default
* This shows a list of fonts known by this vidconsole. The list is displayed on
* the console (not necessarily @dev but probably)
*/
int vidconsole_select_font(struct udevice *dev, const char *name, uint size);
void vidconsole_list_fonts(struct udevice *dev);
/**
* vidconsole_get_font() - get the current font name and size
* vidconsole_get_font_size() - get the current font name and size
*
* @dev: vidconsole device
* @sizep: Place to put the font size (nominal height in pixels)
* Returns: Current font name
*/
const char *vidconsole_get_font(struct udevice *dev, uint *sizep);
const char *vidconsole_get_font_size(struct udevice *dev, uint *sizep);
#ifdef CONFIG_VIDEO_COPY
/**

6
test/cmd/font.c
View file

@ -33,7 +33,7 @@ static int font_test_base(struct unit_test_state *uts)
ut_assertok(ut_check_console_end(uts));
ut_asserteq_str("nimbus_sans_l_regular",
vidconsole_get_font(dev, &size));
vidconsole_get_font_size(dev, &size));
ut_asserteq(18, size);
max_metrics = 1;
@ -53,14 +53,14 @@ static int font_test_base(struct unit_test_state *uts)
ut_assertok(ut_check_console_end(uts));
ut_asserteq_str("cantoraone_regular",
vidconsole_get_font(dev, &size));
vidconsole_get_font_size(dev, &size));
ut_asserteq(40, size);
ut_assertok(run_command("font size 30", 0));
ut_assertok(ut_check_console_end(uts));
ut_asserteq_str("cantoraone_regular",
vidconsole_get_font(dev, &size));
vidconsole_get_font_size(dev, &size));
ut_asserteq(30, size);
return 0;