New callback will supply necessary information, for example,
to ACPI SPCR table.

Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
 drivers/serial/ns16550.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index b51b56de9f..698acbfb51 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -334,6 +334,19 @@ static int ns16550_serial_setbrg(struct udevice *dev, int 
baudrate)
        return 0;
 }
 
+static int ns16550_serial_getinfo(struct udevice *dev, struct 
serial_device_info *info)
+{
+       struct NS16550 *const com_port = dev_get_priv(dev);
+       struct ns16550_platdata *plat = com_port->plat;
+
+       info->addr_space = 0;
+       info->reg_width = plat->reg_width * 8;
+       info->reg_shift = plat->reg_shift;
+       info->reg_offset = plat->reg_offset;
+       info->addr = plat->base;
+       return 0;
+}
+
 int ns16550_serial_probe(struct udevice *dev)
 {
        struct NS16550 *const com_port = dev_get_priv(dev);
@@ -441,6 +454,7 @@ const struct dm_serial_ops ns16550_serial_ops = {
        .pending = ns16550_serial_pending,
        .getc = ns16550_serial_getc,
        .setbrg = ns16550_serial_setbrg,
+       .getinfo = ns16550_serial_getinfo,
 };
 
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
-- 
2.19.1

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