VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: Mario Limonciello <mario.limonciello@amd.com> 2023-05-18 11:11:50 -0500 committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2023-07-19 16:36:55 +0200 commit: 7e3b21ebfe3302b8ddba8d68e63dfc7a3299d9f2 parent: 059484d31a8a72a2131539713018669350ac34c6
Commit Summary:
usb: typec: ucsi: Mark dGPUs as DEVICE scope
Diffstat:
3 files changed, 27 insertions, 1 deletion
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 782fe1ef3ca1..61d7a27aa070 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 
@@ -234,6 +235,16 @@ static const struct dev_pm_ops i2c_dw_pm_ops = {
 	SET_RUNTIME_PM_OPS(i2c_dw_pci_runtime_suspend, i2c_dw_pci_runtime_resume, NULL)
 };
 
+static const struct property_entry dgpu_properties[] = {
+	/* USB-C doesn't power the system */
+	PROPERTY_ENTRY_U8("scope", POWER_SUPPLY_SCOPE_DEVICE),
+	{}
+};
+
+static const struct software_node dgpu_node = {
+	.properties = dgpu_properties,
+};
+
 static int i2c_dw_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *id)
 {
@@ -325,7 +336,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 	}
 
 	if ((dev->flags & MODEL_MASK) == MODEL_AMD_NAVI_GPU) {
-		dev->slave = i2c_new_ccgx_ucsi(&dev->adapter, dev->irq, NULL);
+		dev->slave = i2c_new_ccgx_ucsi(&dev->adapter, dev->irq, &dgpu_node);
 		if (IS_ERR(dev->slave))
 			return dev_err_probe(dev->dev, PTR_ERR(dev->slave),
 					     "register UCSI failed\n");
diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-nvidia-gpu.c
index a8b99e7f6262..26622d24bb1b 100644
--- a/drivers/i2c/busses/i2c-nvidia-gpu.c
+++ b/drivers/i2c/busses/i2c-nvidia-gpu.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
 
 #include <asm/unaligned.h>
 
@@ -261,6 +262,8 @@ MODULE_DEVICE_TABLE(pci, gpu_i2c_ids);
 static const struct property_entry ccgx_props[] = {
 	/* Use FW built for NVIDIA GPU only */
 	PROPERTY_ENTRY_STRING("firmware-name", "nvidia,gpu"),
+	/* USB-C doesn't power the system */
+	PROPERTY_ENTRY_U8("scope", POWER_SUPPLY_SCOPE_DEVICE),
 	{ }
 };
 
diff --git a/drivers/usb/typec/ucsi/psy.c b/drivers/usb/typec/ucsi/psy.c
index 56bf56517f75..384b42267f1f 100644
--- a/drivers/usb/typec/ucsi/psy.c
+++ b/drivers/usb/typec/ucsi/psy.c
@@ -27,8 +27,20 @@ static enum power_supply_property ucsi_psy_props[] = {
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_CURRENT_MAX,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_SCOPE,
 };
 
+static int ucsi_psy_get_scope(struct ucsi_connector *con,
+			      union power_supply_propval *val)
+{
+	u8 scope = POWER_SUPPLY_SCOPE_UNKNOWN;
+	struct device *dev = con->ucsi->dev;
+
+	device_property_read_u8(dev, "scope", &scope);
+	val->intval = scope;
+	return 0;
+}
+
 static int ucsi_psy_get_online(struct ucsi_connector *con,
 			       union power_supply_propval *val)
 {
@@ -194,6 +206,8 @@ static int ucsi_psy_get_prop(struct power_supply *psy,
 		return ucsi_psy_get_current_max(con, val);
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 		return ucsi_psy_get_current_now(con, val);
+	case POWER_SUPPLY_PROP_SCOPE:
+		return ucsi_psy_get_scope(con, val);
 	default:
 		return -EINVAL;
 	}