[PATCH v2 2/3] drivers: serial: earlycon: Pass device-tree node

Markuss Broks
2022-08-06T16:34:36Z

Pass a pointer to device-tree node in case the driver probed from
OF. This makes early console drivers able to fetch options from
device-tree node properties.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
---
drivers/tty/serial/earlycon.c | 3 +++
include/linux/serial_core.h | 1 +
2 files changed, 4 insertions(+)

diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index bc210ae8173d97d5ef422468acf2755a853cb943..be2f01520f6608f6ece725dd83d2526e30477b47 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -304,6 +304,9 @@ int __init of_setup_earlycon(const struct earlycon_id *match,
strlcpy(early_console_dev.options, options,
sizeof(early_console_dev.options));
}
+
+ early_console_dev.offset = offset;
+
earlycon_init(&early_console_dev, match->name);
err = match->setup(&early_console_dev, options);
earlycon_print_info(&early_console_dev);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index cbd5070bc87f42aa450c4ca7af8a9b59fbe88574..e65b9aba4e5fdaedb560d2cbbf326a11cfecbcac 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -349,6 +349,7 @@ struct earlycon_device {
struct uart_port port;
char options[16]; /* e.g., 115200n8 */
unsigned int baud;
+ int offset;
};

struct earlycon_id {
--
2.37.0