[PATCH v8 3/3] platform/chrome: cros_ec_uart: Add DT enumeration support

Mark Hasemeyer
2022-11-30T20:18:42Z

Existing firmware uses the "PRP0001" _HID and an associated compatible
string to enumerate the cros_ec_uart.

Add DT enumeration support for already shipped firmware.

Signed-off-by: Bhanu Prakash Maiya <bhanumaiya@chromium.org>
Signed-off-by: Mark Hasemeyer <markhas@chromium.org>
---

Changes in v8:
- No change

Changes in v7:
- Move PRP0001 enumeration support to its own commit

drivers/platform/chrome/cros_ec_uart.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_uart.c b/drivers/platform/chrome/cros_ec_uart.c
index ef9ac7ace04b6..521a3ee6f60b3 100644
--- a/drivers/platform/chrome/cros_ec_uart.c
+++ b/drivers/platform/chrome/cros_ec_uart.c
@@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
#include <linux/serdev.h>
@@ -385,6 +386,12 @@ static int __maybe_unused cros_ec_uart_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(cros_ec_uart_pm_ops, cros_ec_uart_suspend,
cros_ec_uart_resume);

+static const struct of_device_id cros_ec_uart_of_match[] = {
+ { .compatible = "google,cros-ec-uart" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, cros_ec_uart_of_match);
+
#ifdef CONFIG_ACPI
static const struct acpi_device_id cros_ec_uart_acpi_id[] = {
{ "GOOG0019", 0 },
@@ -398,6 +405,7 @@ static struct serdev_device_driver cros_ec_uart_driver = {
.driver = {
.name = "cros-ec-uart",
.acpi_match_table = ACPI_PTR(cros_ec_uart_acpi_id),
+ .of_match_table = cros_ec_uart_of_match,
.pm = &cros_ec_uart_pm_ops,
},
.probe = cros_ec_uart_probe,
--
2.38.1.584.g0f3c55d4c2-goog