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platform/x86: intel_cht_int33fe: Provide software nodes for the devices

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Software nodes provide two features that we will need later.
1) Software nodes can have references to other software nodes.
2) Software nodes can exist before a device entry is created.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Heikki Krogerus 2019-05-31 17:15:44 +03:00 committed by Rafael J. Wysocki
parent 80b915c11d
commit 4ed89a005a
1 changed files with 46 additions and 8 deletions
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54
drivers/platform/x86/intel_cht_int33fe.c
View file

@ -27,6 +27,13 @@
#define EXPECTED_PTYPE 4
enum {
INT33FE_NODE_FUSB302,
INT33FE_NODE_MAX17047,
INT33FE_NODE_PI3USB30532,
INT33FE_NODE_MAX,
};
struct cht_int33fe_data {
struct i2c_client *max17047;
struct i2c_client *fusb302;
@ -72,8 +79,13 @@ static const struct property_entry max17047_props[] = {
static const struct property_entry fusb302_props[] = {
PROPERTY_ENTRY_STRING("linux,extcon-name", "cht_wcove_pwrsrc"),
PROPERTY_ENTRY_U32("fcs,max-sink-microvolt", 12000000),
PROPERTY_ENTRY_U32("fcs,max-sink-microamp", 3000000),
{ }
};
static const struct software_node nodes[] = {
{ "fusb302", NULL, fusb302_props },
{ "max17047", NULL, max17047_props },
{ "pi3usb30532" },
{ }
};
@ -82,14 +94,18 @@ cht_int33fe_register_max17047(struct device *dev, struct cht_int33fe_data *data)
{
struct i2c_client *max17047 = NULL;
struct i2c_board_info board_info;
struct fwnode_handle *fwnode;
int ret;
fwnode = software_node_fwnode(&nodes[INT33FE_NODE_MAX17047]);
if (!fwnode)
return -ENODEV;
i2c_for_each_dev(&max17047, cht_int33fe_check_for_max17047);
if (max17047) {
/* Pre-existing i2c-client for the max17047, add device-props */
ret = device_add_properties(&max17047->dev, max17047_props);
if (ret)
return ret;
fwnode->secondary = ERR_PTR(-ENODEV);
max17047->dev.fwnode->secondary = fwnode;
/* And re-probe to get the new device-props applied. */
ret = device_reprobe(&max17047->dev);
if (ret)
@ -100,7 +116,7 @@ cht_int33fe_register_max17047(struct device *dev, struct cht_int33fe_data *data)
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "max17047", I2C_NAME_SIZE);
board_info.dev_name = "max17047";
board_info.properties = max17047_props;
board_info.fwnode = fwnode;
data->max17047 = i2c_acpi_new_device(dev, 1, &board_info);
return PTR_ERR_OR_ZERO(data->max17047);
@ -111,6 +127,7 @@ static int cht_int33fe_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct i2c_board_info board_info;
struct cht_int33fe_data *data;
struct fwnode_handle *fwnode;
struct regulator *regulator;
unsigned long long ptyp;
acpi_status status;
@ -170,10 +187,14 @@ static int cht_int33fe_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;
ret = software_node_register_nodes(nodes);
if (ret)
return ret;
/* Work around BIOS bug, see comment on cht_int33fe_check_for_max17047 */
ret = cht_int33fe_register_max17047(dev, data);
if (ret)
return ret;
goto out_remove_nodes;
data->connections[0].endpoint[0] = "port0";
data->connections[0].endpoint[1] = "i2c-pi3usb30532-switch";
@ -187,10 +208,16 @@ static int cht_int33fe_probe(struct platform_device *pdev)
device_connections_add(data->connections);
fwnode = software_node_fwnode(&nodes[INT33FE_NODE_FUSB302]);
if (!fwnode) {
ret = -ENODEV;
goto out_unregister_max17047;
}
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE);
board_info.dev_name = "fusb302";
board_info.properties = fusb302_props;
board_info.fwnode = fwnode;
board_info.irq = fusb302_irq;
data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info);
@ -199,8 +226,15 @@ static int cht_int33fe_probe(struct platform_device *pdev)
goto out_unregister_max17047;
}
fwnode = software_node_fwnode(&nodes[INT33FE_NODE_PI3USB30532]);
if (!fwnode) {
ret = -ENODEV;
goto out_unregister_fusb302;
}
memset(&board_info, 0, sizeof(board_info));
board_info.dev_name = "pi3usb30532";
board_info.fwnode = fwnode;
strlcpy(board_info.type, "pi3usb30532", I2C_NAME_SIZE);
data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info);
@ -221,6 +255,9 @@ static int cht_int33fe_probe(struct platform_device *pdev)
device_connections_remove(data->connections);
out_remove_nodes:
software_node_unregister_nodes(nodes);
return ret;
}
@ -233,6 +270,7 @@ static int cht_int33fe_remove(struct platform_device *pdev)
i2c_unregister_device(data->max17047);
device_connections_remove(data->connections);
software_node_unregister_nodes(nodes);
return 0;
}