From: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date: Sun, 8 Sep 2024 21:09:05 +0000 (+0200)
Subject: phy: test: Implement sandbox PHY .set_mode and DM test
X-Git-Url: http://git.dujemihanovic.xyz/html/static/%7B%7B%20%24.Site.BaseURL%20%7D%7Dposts/index.xml?a=commitdiff_plain;h=e72e683e36a83214dbb2547d88d553b5fd816dc8;p=u-boot.git

phy: test: Implement sandbox PHY .set_mode and DM test

Implement trivial extension to the sandbox PHY, which makes it pretend
to support selecting USB Host mode and nothing else. Any other mode is
rejected with -EINVAL. Any submode except for default submode 0 is
rejected with -EOPNOTSUPP . The implementation behaves in this trivial
way to permit easy unit testing using test which is also added in this
commit.

To run the test, use e.g. sandbox64_defconfig and run U-Boot as follows:
$ ./u-boot -Tc 'ut dm phy_setup'

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---

diff --git a/drivers/phy/sandbox-phy.c b/drivers/phy/sandbox-phy.c
index b159147a76..e70d20432e 100644
--- a/drivers/phy/sandbox-phy.c
+++ b/drivers/phy/sandbox-phy.c
@@ -72,6 +72,18 @@ static int sandbox_phy_exit(struct phy *phy)
 	return 0;
 }
 
+static int
+sandbox_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode)
+{
+	if (submode)
+		return -EOPNOTSUPP;
+
+	if (mode != PHY_MODE_USB_HOST)
+		return -EINVAL;
+
+	return 0;
+}
+
 static int sandbox_phy_bind(struct udevice *dev)
 {
 	if (dev_get_driver_data(dev) != DRIVER_DATA)
@@ -96,6 +108,7 @@ static struct phy_ops sandbox_phy_ops = {
 	.power_off = sandbox_phy_power_off,
 	.init = sandbox_phy_init,
 	.exit = sandbox_phy_exit,
+	.set_mode = sandbox_phy_set_mode,
 };
 
 static const struct udevice_id sandbox_phy_ids[] = {
diff --git a/test/dm/phy.c b/test/dm/phy.c
index 8808ca3689..194cad0bf7 100644
--- a/test/dm/phy.c
+++ b/test/dm/phy.c
@@ -246,6 +246,13 @@ static int dm_test_phy_setup(struct unit_test_state *uts)
 	ut_assertok(generic_setup_phy(parent, &phy, 0, PHY_MODE_USB_HOST, 0));
 	ut_assertok(generic_shutdown_phy(&phy));
 
+	/* set_mode as USB Host passes, anything else is not supported */
+	ut_assertok(generic_setup_phy(parent, &phy, 0, PHY_MODE_USB_HOST, 0));
+	ut_assertok(generic_phy_set_mode(&phy, PHY_MODE_USB_HOST, 0));
+	ut_asserteq(-EOPNOTSUPP, generic_phy_set_mode(&phy, PHY_MODE_USB_HOST, 1));
+	ut_asserteq(-EINVAL, generic_phy_set_mode(&phy, PHY_MODE_USB_DEVICE, 0));
+	ut_assertok(generic_shutdown_phy(&phy));
+
 	/* power_off fail with -EIO */
 	ut_assertok(generic_setup_phy(parent, &phy, 1, PHY_MODE_USB_HOST, 0));
 	ut_asserteq(-EIO, generic_shutdown_phy(&phy));