Introduce puts hook for dm serial driver.

Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/serial/serial-uclass.c | 13 +++++++++++-- include/serial.h | 8 ++++++++ 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index 7703c67492..b6a7502ac8 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -189,8 +189,17 @@ static void _serial_putc(struct udevice *dev, char ch)

static void _serial_puts(struct udevice *dev, const char *str) { - while (*str) - _serial_putc(dev, *str++); + struct dm_serial_ops *ops = serial_get_ops(dev); + int err; + + if (ops->puts) { + do { + err = ops->puts(dev, str); + } while (err == -EAGAIN); + } else { + while (*str) + _serial_putc(dev, *str++); + } }

static int __serial_getc(struct udevice *dev) diff --git a/include/serial.h b/include/serial.h index 54b21a0470..0b40b27526 100644 --- a/include/serial.h +++ b/include/serial.h @@ -186,6 +186,14 @@ struct dm_serial_ops { * @return character (0..255), -ve on error */ int (*getc)(struct udevice *dev); + /** + * puts() - puts a string + * + * @dev: Device pointer + * @str: string to write + * @return 0 if OK, -ve on error + */ + int (*puts)(struct udevice *dev, const char *str); /** * putc() - Write a character *