From ea37e5064e20c63cbaa667cb8b81838d5bab65bb Mon Sep 17 00:00:00 2001
From: Maximilian Brune <maximilian.brune@9elements.com>
Date: Wed, 23 Oct 2024 15:19:48 +0200
Subject: serial: serial_pl01x: Implement .getinfo() for PL01

When ACPI is enabled on arm it will use the getinfo function to fill
the SPCR ACPI table.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Moritz Fischer <moritzf@google.com>
---
 drivers/serial/serial_pl01x.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'drivers/serial')

diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index 80c35963b8f..e6bf0c2935b 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -19,6 +19,7 @@
 #include <watchdog.h>
 #include <asm/io.h>
 #include <serial.h>
+#include <spl.h>
 #include <dm/device_compat.h>
 #include <dm/platform_data/serial_pl01x.h>
 #include <linux/compiler.h>
@@ -272,6 +273,28 @@ __weak struct serial_device *default_serial_console(void)
 	return &pl01x_serial_drv;
 }
 #else
+
+static int pl01x_serial_getinfo(struct udevice *dev,
+				struct serial_device_info *info)
+{
+	struct pl01x_serial_plat *plat = dev_get_plat(dev);
+
+	/* save code size */
+	if (!not_xpl())
+		return -ENOSYS;
+
+	info->type = SERIAL_CHIP_PL01X;
+	info->addr_space = SERIAL_ADDRESS_SPACE_MEMORY;
+	info->addr = plat->base;
+	info->size = 0x1000;
+	info->reg_width = 4;
+	info->reg_shift = 2;
+	info->reg_offset = 0;
+	info->clock = plat->clock;
+
+	return 0;
+}
+
 int pl01x_serial_setbrg(struct udevice *dev, int baudrate)
 {
 	struct pl01x_serial_plat *plat = dev_get_plat(dev);
@@ -341,6 +364,7 @@ static const struct dm_serial_ops pl01x_serial_ops = {
 	.pending = pl01x_serial_pending,
 	.getc = pl01x_serial_getc,
 	.setbrg = pl01x_serial_setbrg,
+	.getinfo = pl01x_serial_getinfo,
 };
 
 #if CONFIG_IS_ENABLED(OF_REAL)
-- 
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