[PATCH v3 27/29] serial: sandbox: Implement puts

[Sean Anderson]

This implements puts for sandbox. It is fairly straightforward, except
that we break out the shared color printing functionality into its own
function.

Signed-off-by: Sean Anderson <sean.anderson at seco.com>
---

(no changes since v2)

Changes in v2:
- New

 drivers/serial/Kconfig   |  1 +
 drivers/serial/sandbox.c | 21 ++++++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 1a109b2411..86c4c6d5a0 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -775,6 +775,7 @@ config S5P_SERIAL
 config SANDBOX_SERIAL
 	bool "Sandbox UART support"
 	depends on SANDBOX
+	imply SERIAL_PUTS
 	help
 	  Select this to enable a seral UART for sandbox. This is required to
 	  operate correctly, otherwise you will see no serial output from
diff --git a/drivers/serial/sandbox.c b/drivers/serial/sandbox.c
index 0b1756f5c0..50cf2c74a7 100644
--- a/drivers/serial/sandbox.c
+++ b/drivers/serial/sandbox.c
@@ -67,7 +67,7 @@ static int sandbox_serial_remove(struct udevice *dev)
 	return 0;
 }
 
-static int sandbox_serial_putc(struct udevice *dev, const char ch)
+static void sandbox_print_color(struct udevice *dev)
 {
 	struct sandbox_serial_priv *priv = dev_get_priv(dev);
 	struct sandbox_serial_plat *plat = dev_get_plat(dev);
@@ -78,7 +78,13 @@ static int sandbox_serial_putc(struct udevice *dev, const char ch)
 		priv->start_of_line = false;
 		output_ansi_colour(plat->colour);
 	}
+}
 
+static int sandbox_serial_putc(struct udevice *dev, const char ch)
+{
+	struct sandbox_serial_priv *priv = dev_get_priv(dev);
+
+	sandbox_print_color(dev);
 	os_write(1, &ch, 1);
 	if (ch == '\n')
 		priv->start_of_line = true;
@@ -86,6 +92,18 @@ static int sandbox_serial_putc(struct udevice *dev, const char ch)
 	return 0;
 }
 
+static ssize_t sandbox_serial_puts(struct udevice *dev, const char *s,
+				   size_t len)
+{
+	struct sandbox_serial_priv *priv = dev_get_priv(dev);
+
+	sandbox_print_color(dev);
+	if (s[len - 1] == '\n')
+		priv->start_of_line = true;
+
+	return os_write(1, s, len);
+}
+
 static int sandbox_serial_pending(struct udevice *dev, bool input)
 {
 	struct sandbox_serial_priv *priv = dev_get_priv(dev);
@@ -212,6 +230,7 @@ static int sandbox_serial_of_to_plat(struct udevice *dev)
 
 static const struct dm_serial_ops sandbox_serial_ops = {
 	.putc = sandbox_serial_putc,
+	.puts = sandbox_serial_puts,
 	.pending = sandbox_serial_pending,
 	.getc = sandbox_serial_getc,
 	.getconfig = sandbox_serial_getconfig,
-- 
2.25.1