usb: typec: ucsi_ccg: Add OF support

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2122414
Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
Tested: Verify USB-A and USB-C are functional on Nvidia Orin board,
 and no regressions on other platforms.

commit 6d9e066
Author: Wayne Chang <waynec@nvidia.com>
Date:   Tue Jan 31 17:57:45 2023 +0000

    usb: typec: ucsi_ccg: Add OF support

    Add device-tree support for the Cypress CCG UCSI driver. The device-tree
    binding for the Cypress CCG device uses the standard device-tree
    'firmware-name' string property to indicate the firmware build that is
    used.

    The NVIDIA GPU I2C driver has been updated to use an ACPI string
    property that is also named 'firmware-build' and given that this was the
    only users of the 'ccgx,firmware-build' property, we can now remove
    support for this legacy property.

    Signed-off-by: Wayne Chang <waynec@nvidia.com>
    Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
    Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
    Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
    Link: https://lore.kernel.org/r/20230131175748.256423-4-jonathanh@nvidia.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    (cherry picked from commit 6d9e066)

Signed-off-by: David Marlin <dmarlin@redhat.com>

Author: damarlin

drivers/usb/typec/ucsi/ucsi_ccg.c

@@ -643,7 +643,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
 {
 	unsigned long flags = IRQF_ONESHOT;
 
-	if (!has_acpi_companion(uc->dev))
+	if (!dev_fwnode(uc->dev))
 		flags |= IRQF_TRIGGER_HIGH;
 
 	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
@@ -1343,6 +1343,7 @@ static int ucsi_ccg_probe(struct i2c_client *client,
 {
 	struct device *dev = &client->dev;
 	struct ucsi_ccg *uc;
+	const char *fw_name;
 	int status;
 
 	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
@@ -1358,9 +1359,15 @@ static int ucsi_ccg_probe(struct i2c_client *client,
 	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
 
 	/* Only fail FW flashing when FW build information is not provided */
-	status = device_property_read_u16(dev, "ccgx,firmware-build",
-					  &uc->fw_build);
-	if (status)
+	status = device_property_read_string(dev, "firmware-name", &fw_name);
+	if (!status) {
+		if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
+		else if (!strcmp(fw_name, "nvidia,gpu"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA;
+	}
+
+	if (!uc->fw_build)
 		dev_err(uc->dev, "failed to get FW build information\n");
 
 	/* reset ccg device and initialize ucsi */
@@ -1429,6 +1436,12 @@ static int ucsi_ccg_remove(struct i2c_client *client)
 	return 0;
 }
 
+static const struct of_device_id ucsi_ccg_of_match_table[] = {
+		{ .compatible = "cypress,cypd4226", },
+		{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
+
 static const struct i2c_device_id ucsi_ccg_device_id[] = {
 	{"ccgx-ucsi", 0},
 	{}
@@ -1483,6 +1496,7 @@ static struct i2c_driver ucsi_ccg_driver = {
 		.pm = &ucsi_ccg_pm,
 		.dev_groups = ucsi_ccg_groups,
 		.acpi_match_table = amd_i2c_ucsi_match,
+		.of_match_table = ucsi_ccg_of_match_table,
 	},
 	.probe = ucsi_ccg_probe,
 	.remove = ucsi_ccg_remove,