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serial: Implement serial_flush() function for console flush() fallback

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Like in all other console functions, implement also serial_flush() function
as a fallback int console flush() function.

Flush support is available only when config option CONSOLE_FLUSH_SUPPORT is
enabled. So when it is disabled then provides just empty static inline
function serial_flush().

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Pali Rohár 2022-09-05 11:31:19 +02:00 committed by Tom Rini
parent 016e2be96d
commit 78b5243182
4 changed files with 26 additions and 0 deletions
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3
common/console.c
View file

@ -797,6 +797,9 @@ void flush(void)
if (gd->flags & GD_FLG_DEVINIT) {
/* Send to the standard output */
fflush(stdout);
} else {
/* Send directly to the handler */
serial_flush();
}
}
#endif

8
common/stdio.c
View file

@ -87,6 +87,13 @@ static void stdio_serial_puts(struct stdio_dev *dev, const char *s)
serial_puts(s);
}
#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
static void stdio_serial_flush(struct stdio_dev *dev)
{
serial_flush();
}
#endif
static int stdio_serial_getc(struct stdio_dev *dev)
{
return serial_getc();
@ -112,6 +119,7 @@ static void drv_system_init (void)
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
dev.putc = stdio_serial_putc;
dev.puts = stdio_serial_puts;
STDIO_DEV_ASSIGN_FLUSH(&dev, stdio_serial_flush);
dev.getc = stdio_serial_getc;
dev.tstc = stdio_serial_tstc;
stdio_register (&dev);

10
drivers/serial/serial-uclass.c
View file

@ -327,6 +327,16 @@ void serial_puts(const char *str)
_serial_puts(gd->cur_serial_dev, str);
}
#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
void serial_flush(void)
{
if (!gd->cur_serial_dev)
return;
_serial_flush(gd->cur_serial_dev);
}
#endif
int serial_getc(void)
{
if (!gd->cur_serial_dev)

5
include/serial.h
View file

@ -362,6 +362,11 @@ void serial_setbrg(void);
void serial_putc(const char ch);
void serial_putc_raw(const char ch);
void serial_puts(const char *str);
#if defined(CONFIG_CONSOLE_FLUSH_SUPPORT) && CONFIG_IS_ENABLED(DM_SERIAL)
void serial_flush(void);
#else
static inline void serial_flush(void) {}
#endif
int serial_getc(void);
int serial_tstc(void);