HID: hid-goodix-spi: Add OF supports

This patch introduces the following changes:
- Adds OF match table.
- Hardcodes hid-report-addr in the driver rather than fetching it
  from the device property.

Signed-off-by: Charles Wang <charles.goodix@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Author: charles-goodix

drivers/hid/hid-goodix-spi.c

@@ -20,6 +20,7 @@
 #define GOODIX_HID_REPORT_DESC_ADDR	0x105AA
 #define GOODIX_HID_SIGN_ADDR		0x10D32
 #define GOODIX_HID_CMD_ADDR		0x10364
+#define GOODIX_HID_REPORT_ADDR		0x22C8C
 
 #define GOODIX_HID_GET_REPORT_CMD	0x02
 #define GOODIX_HID_SET_REPORT_CMD	0x03
@@ -701,12 +702,7 @@ static int goodix_spi_probe(struct spi_device *spi)
 		return dev_err_probe(dev, PTR_ERR(ts->reset_gpio),
 				     "failed to request reset gpio\n");
 
-	error = device_property_read_u32(dev, "goodix,hid-report-addr",
-					 &ts->hid_report_addr);
-	if (error)
-		return dev_err_probe(dev, error,
-				     "failed get hid report addr\n");
-
+	ts->hid_report_addr = GOODIX_HID_REPORT_ADDR;
 	error = goodix_dev_confirm(ts);
 	if (error)
 		return error;
@@ -790,6 +786,14 @@ static const struct acpi_device_id goodix_spi_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, goodix_spi_acpi_match);
 #endif
 
+#ifdef CONFIG_OF
+static const struct of_device_id goodix_spi_of_match[] = {
+	{ .compatible = "goodix,gt7986u-spifw", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, goodix_spi_of_match);
+#endif
+
 static const struct spi_device_id goodix_spi_ids[] = {
 	{ "gt7986u" },
 	{ },
@@ -800,6 +804,7 @@ static struct spi_driver goodix_spi_driver = {
 	.driver = {
 		.name = "goodix-spi-hid",
 		.acpi_match_table = ACPI_PTR(goodix_spi_acpi_match),
+		.of_match_table = of_match_ptr(goodix_spi_of_match),
 		.pm = pm_sleep_ptr(&goodix_spi_pm_ops),
 	},
 	.probe =	goodix_spi_probe,