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platform/chrome: cros_ec_uart: Add DT enumeration support 

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>
Co-developed-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Mark Hasemeyer <markhas@chromium.org>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20221227123212.v13.3.Ie23c217d69ff25d7354db942613f143bbc8ef891@changeid
This commit is contained in:
Bhanu Prakash Maiya 2022-12-27 12:32:24 -07:00 committed by Tzung-Bi Shih
parent 04a8bdd135
commit f9bce00f78
1 changed files with 8 additions and 0 deletions
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8
drivers/platform/chrome/cros_ec_uart.c
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@ -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_proto.h>
#include <linux/serdev.h>
#include <linux/slab.h>
@ -326,6 +327,12 @@ 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 },
@ -339,6 +346,7 @@ 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,