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path: root/drivers/bus/hisi_lpc.c
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Diffstat (limited to 'drivers/bus/hisi_lpc.c')
-rw-r--r--drivers/bus/hisi_lpc.c47
1 files changed, 41 insertions, 6 deletions
diff --git a/drivers/bus/hisi_lpc.c b/drivers/bus/hisi_lpc.c
index 19d7b6ff2f17..20c957185af2 100644
--- a/drivers/bus/hisi_lpc.c
+++ b/drivers/bus/hisi_lpc.c
@@ -456,6 +456,17 @@ struct hisi_lpc_acpi_cell {
size_t pdata_size;
};
+static void hisi_lpc_acpi_remove(struct device *hostdev)
+{
+ struct acpi_device *adev = ACPI_COMPANION(hostdev);
+ struct acpi_device *child;
+
+ device_for_each_child(hostdev, NULL, hisi_lpc_acpi_remove_subdev);
+
+ list_for_each_entry(child, &adev->children, node)
+ acpi_device_clear_enumerated(child);
+}
+
/*
* hisi_lpc_acpi_probe - probe children for ACPI FW
* @hostdev: LPC host device pointer
@@ -555,8 +566,7 @@ static int hisi_lpc_acpi_probe(struct device *hostdev)
return 0;
fail:
- device_for_each_child(hostdev, NULL,
- hisi_lpc_acpi_remove_subdev);
+ hisi_lpc_acpi_remove(hostdev);
return ret;
}
@@ -569,6 +579,10 @@ static int hisi_lpc_acpi_probe(struct device *dev)
{
return -ENODEV;
}
+
+static void hisi_lpc_acpi_remove(struct device *hostdev)
+{
+}
#endif // CONFIG_ACPI
/*
@@ -606,24 +620,27 @@ static int hisi_lpc_probe(struct platform_device *pdev)
range->fwnode = dev->fwnode;
range->flags = LOGIC_PIO_INDIRECT;
range->size = PIO_INDIRECT_SIZE;
+ range->hostdata = lpcdev;
+ range->ops = &hisi_lpc_ops;
+ lpcdev->io_host = range;
ret = logic_pio_register_range(range);
if (ret) {
dev_err(dev, "register IO range failed (%d)!\n", ret);
return ret;
}
- lpcdev->io_host = range;
/* register the LPC host PIO resources */
if (acpi_device)
ret = hisi_lpc_acpi_probe(dev);
else
ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
- if (ret)
+ if (ret) {
+ logic_pio_unregister_range(range);
return ret;
+ }
- lpcdev->io_host->hostdata = lpcdev;
- lpcdev->io_host->ops = &hisi_lpc_ops;
+ dev_set_drvdata(dev, lpcdev);
io_end = lpcdev->io_host->io_start + lpcdev->io_host->size;
dev_info(dev, "registered range [%pa - %pa]\n",
@@ -632,6 +649,23 @@ static int hisi_lpc_probe(struct platform_device *pdev)
return ret;
}
+static int hisi_lpc_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct acpi_device *acpi_device = ACPI_COMPANION(dev);
+ struct hisi_lpc_dev *lpcdev = dev_get_drvdata(dev);
+ struct logic_pio_hwaddr *range = lpcdev->io_host;
+
+ if (acpi_device)
+ hisi_lpc_acpi_remove(dev);
+ else
+ of_platform_depopulate(dev);
+
+ logic_pio_unregister_range(range);
+
+ return 0;
+}
+
static const struct of_device_id hisi_lpc_of_match[] = {
{ .compatible = "hisilicon,hip06-lpc", },
{ .compatible = "hisilicon,hip07-lpc", },
@@ -645,5 +679,6 @@ static struct platform_driver hisi_lpc_driver = {
.acpi_match_table = ACPI_PTR(hisi_lpc_acpi_match),
},
.probe = hisi_lpc_probe,
+ .remove = hisi_lpc_remove,
};
builtin_platform_driver(hisi_lpc_driver);