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Subject[PATCH 2/2] platform/x86: intel_cht_int33fe: Create fwnode for max17047
Date
Creating a software node for max17047 when ACPI tables don't
have a device node for it.

While here, moving max17047 handling to its own function.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
drivers/platform/x86/intel_cht_int33fe.c | 86 +++++++++++++++---------
1 file changed, 53 insertions(+), 33 deletions(-)

diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c
index 4857a57cfff5..81721976b00c 100644
--- a/drivers/platform/x86/intel_cht_int33fe.c
+++ b/drivers/platform/x86/intel_cht_int33fe.c
@@ -34,6 +34,7 @@ struct cht_int33fe_data {
struct i2c_client *pi3usb30532;
struct fwnode_handle *port_node;
struct fwnode_handle *fusb302_node;
+ struct fwnode_handle *max17047_node;
/* Contain a list-head must be per device */
struct device_connection connections[4];
};
@@ -66,14 +67,6 @@ static int cht_int33fe_check_for_max17047(struct device *dev, void *data)
return 1;
}

-static struct i2c_client *cht_int33fe_find_max17047(void)
-{
- struct i2c_client *max17047 = NULL;
-
- i2c_for_each_dev(&max17047, cht_int33fe_check_for_max17047);
- return max17047;
-}
-
static const char * const max17047_suppliers[] = { "bq24190-charger" };

static const struct property_entry max17047_props[] = {
@@ -81,6 +74,43 @@ static const struct property_entry max17047_props[] = {
{ }
};

+static int
+cht_int33fe_max17047(struct device *dev, struct cht_int33fe_data *data)
+{
+ struct i2c_client *max17047 = NULL;
+ struct i2c_board_info board_info;
+ int ret;
+
+ 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;
+ /* And re-probe to get the new device-props applied. */
+ ret = device_reprobe(&max17047->dev);
+ if (ret)
+ dev_warn(dev, "Reprobing max17047 error: %d\n", ret);
+ return 0;
+ }
+
+ data->max17047_node = fwnode_create_software_node(max17047_props, NULL);
+ if (IS_ERR(data->max17047_node))
+ return PTR_ERR(data->max17047_node);
+
+ memset(&board_info, 0, sizeof(board_info));
+ strlcpy(board_info.type, "max17047", I2C_NAME_SIZE);
+ board_info.dev_name = "max17047";
+ board_info.fwnode = data->max17047_node;
+ data->max17047 = i2c_acpi_new_device(dev, 1, &board_info);
+ if (IS_ERR(data->max17047)) {
+ fwnode_remove_software_node(data->max17047_node);
+ return PTR_ERR(data->max17047);
+ }
+
+ return 0;
+}
+
static const struct property_entry fusb302_props[] = {
PROPERTY_ENTRY_STRING("linux,extcon-name", "cht_wcove_pwrsrc"),
{ }
@@ -114,7 +144,6 @@ 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 i2c_client *max17047;
struct regulator *regulator;
unsigned long long ptyp;
acpi_status status;
@@ -174,38 +203,25 @@ static int cht_int33fe_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;

+ /* Work around BIOS bug, see comment on cht_int33fe_find_max17047 */
+ ret = cht_int33fe_max17047(dev, data);
+ if (ret)
+ return ret;
+
/* Node for the FUSB302 controller */
data->fusb302_node = fwnode_create_software_node(fusb302_props, NULL);
- if (IS_ERR(data->fusb302_node))
- return PTR_ERR(data->fusb302_node);
+ if (IS_ERR(data->fusb302_node)) {
+ ret = PTR_ERR(data->fusb302_node);
+ goto out_remove_max17047_node;
+ }

/* Node for the connector (FUSB302 is the parent) */
data->port_node = fwnode_create_software_node(usb_connector_props,
data->fusb302_node);
if (IS_ERR(data->port_node)) {
fwnode_remove_software_node(data->fusb302_node);
- return PTR_ERR(data->port_node);
- }
-
- /* Work around BIOS bug, see comment on cht_int33fe_find_max17047 */
- max17047 = cht_int33fe_find_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;
- /* And re-probe to get the new device-props applied. */
- ret = device_reprobe(&max17047->dev);
- if (ret)
- dev_warn(dev, "Reprobing max17047 error: %d\n", ret);
- } else {
- 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;
- data->max17047 = i2c_acpi_new_device(dev, 1, &board_info);
- if (IS_ERR(data->max17047))
- return PTR_ERR(data->max17047);
+ ret = PTR_ERR(data->port_node);
+ goto out_remove_max17047_node;
}

data->connections[0].endpoint[0] = "port0";
@@ -256,6 +272,9 @@ static int cht_int33fe_probe(struct platform_device *pdev)
fwnode_remove_software_node(data->port_node);
fwnode_remove_software_node(data->fusb302_node);

+out_remove_max17047_node:
+ fwnode_remove_software_node(data->max17047_node);
+
return ret;
}

@@ -270,6 +289,7 @@ static int cht_int33fe_remove(struct platform_device *pdev)
device_connections_remove(data->connections);
fwnode_remove_software_node(data->port_node);
fwnode_remove_software_node(data->fusb302_node);
+ fwnode_remove_software_node(data->max17047_node);

return 0;
}
--
2.20.1
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