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@@ -115,263 +115,6 @@ int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
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return 0;
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}
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-/**
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- * create_pnp_modalias - Create hid/cid(s) string for modalias and uevent
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- * @acpi_dev: ACPI device object.
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- * @modalias: Buffer to print into.
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- * @size: Size of the buffer.
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- *
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- * Creates hid/cid(s) string needed for modalias and uevent
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- * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
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- * char *modalias: "acpi:IBM0001:ACPI0001"
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- * Return: 0: no _HID and no _CID
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- * -EINVAL: output error
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- * -ENOMEM: output is truncated
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-*/
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-static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
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- int size)
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-{
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- int len;
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- int count;
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- struct acpi_hardware_id *id;
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-
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- /*
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- * Since we skip ACPI_DT_NAMESPACE_HID from the modalias below, 0 should
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- * be returned if ACPI_DT_NAMESPACE_HID is the only ACPI/PNP ID in the
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- * device's list.
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- */
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- count = 0;
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- list_for_each_entry(id, &acpi_dev->pnp.ids, list)
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- if (strcmp(id->id, ACPI_DT_NAMESPACE_HID))
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- count++;
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-
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- if (!count)
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- return 0;
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-
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- len = snprintf(modalias, size, "acpi:");
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- if (len <= 0)
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- return len;
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-
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- size -= len;
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-
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- list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
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- if (!strcmp(id->id, ACPI_DT_NAMESPACE_HID))
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- continue;
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-
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- count = snprintf(&modalias[len], size, "%s:", id->id);
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- if (count < 0)
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- return -EINVAL;
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-
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- if (count >= size)
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- return -ENOMEM;
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-
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- len += count;
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- size -= count;
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- }
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- modalias[len] = '\0';
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- return len;
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-}
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-
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-/**
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- * create_of_modalias - Creates DT compatible string for modalias and uevent
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- * @acpi_dev: ACPI device object.
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- * @modalias: Buffer to print into.
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- * @size: Size of the buffer.
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- *
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- * Expose DT compatible modalias as of:NnameTCcompatible. This function should
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- * only be called for devices having ACPI_DT_NAMESPACE_HID in their list of
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- * ACPI/PNP IDs.
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- */
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-static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias,
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- int size)
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-{
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- struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
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- const union acpi_object *of_compatible, *obj;
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- int len, count;
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- int i, nval;
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- char *c;
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-
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- acpi_get_name(acpi_dev->handle, ACPI_SINGLE_NAME, &buf);
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- /* DT strings are all in lower case */
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- for (c = buf.pointer; *c != '\0'; c++)
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- *c = tolower(*c);
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-
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- len = snprintf(modalias, size, "of:N%sT", (char *)buf.pointer);
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- ACPI_FREE(buf.pointer);
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-
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- if (len <= 0)
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- return len;
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-
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- of_compatible = acpi_dev->data.of_compatible;
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- if (of_compatible->type == ACPI_TYPE_PACKAGE) {
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- nval = of_compatible->package.count;
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- obj = of_compatible->package.elements;
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- } else { /* Must be ACPI_TYPE_STRING. */
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- nval = 1;
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- obj = of_compatible;
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- }
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- for (i = 0; i < nval; i++, obj++) {
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- count = snprintf(&modalias[len], size, "C%s",
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- obj->string.pointer);
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- if (count < 0)
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- return -EINVAL;
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-
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- if (count >= size)
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- return -ENOMEM;
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-
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- len += count;
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- size -= count;
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- }
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- modalias[len] = '\0';
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- return len;
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-}
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-
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-/*
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- * acpi_companion_match() - Can we match via ACPI companion device
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- * @dev: Device in question
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- *
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- * Check if the given device has an ACPI companion and if that companion has
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- * a valid list of PNP IDs, and if the device is the first (primary) physical
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- * device associated with it. Return the companion pointer if that's the case
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- * or NULL otherwise.
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- *
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- * If multiple physical devices are attached to a single ACPI companion, we need
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- * to be careful. The usage scenario for this kind of relationship is that all
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- * of the physical devices in question use resources provided by the ACPI
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- * companion. A typical case is an MFD device where all the sub-devices share
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- * the parent's ACPI companion. In such cases we can only allow the primary
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- * (first) physical device to be matched with the help of the companion's PNP
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- * IDs.
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- *
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- * Additional physical devices sharing the ACPI companion can still use
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- * resources available from it but they will be matched normally using functions
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- * provided by their bus types (and analogously for their modalias).
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- */
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-static struct acpi_device *acpi_companion_match(const struct device *dev)
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-{
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- struct acpi_device *adev;
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- struct mutex *physical_node_lock;
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-
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- adev = ACPI_COMPANION(dev);
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- if (!adev)
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- return NULL;
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-
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- if (list_empty(&adev->pnp.ids))
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- return NULL;
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-
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- physical_node_lock = &adev->physical_node_lock;
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- mutex_lock(physical_node_lock);
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- if (list_empty(&adev->physical_node_list)) {
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- adev = NULL;
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- } else {
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- const struct acpi_device_physical_node *node;
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-
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- node = list_first_entry(&adev->physical_node_list,
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- struct acpi_device_physical_node, node);
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- if (node->dev != dev)
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- adev = NULL;
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- }
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- mutex_unlock(physical_node_lock);
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-
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- return adev;
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-}
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-
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-static int __acpi_device_uevent_modalias(struct acpi_device *adev,
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- struct kobj_uevent_env *env)
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-{
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- int len;
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-
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- if (!adev)
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- return -ENODEV;
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-
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- if (list_empty(&adev->pnp.ids))
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- return 0;
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-
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- if (add_uevent_var(env, "MODALIAS="))
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- return -ENOMEM;
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-
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- len = create_pnp_modalias(adev, &env->buf[env->buflen - 1],
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- sizeof(env->buf) - env->buflen);
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- if (len < 0)
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- return len;
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-
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- env->buflen += len;
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- if (!adev->data.of_compatible)
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- return 0;
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-
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- if (len > 0 && add_uevent_var(env, "MODALIAS="))
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- return -ENOMEM;
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-
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- len = create_of_modalias(adev, &env->buf[env->buflen - 1],
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- sizeof(env->buf) - env->buflen);
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- if (len < 0)
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- return len;
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-
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- env->buflen += len;
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-
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- return 0;
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-}
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-
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-/*
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- * Creates uevent modalias field for ACPI enumerated devices.
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- * Because the other buses does not support ACPI HIDs & CIDs.
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- * e.g. for a device with hid:IBM0001 and cid:ACPI0001 you get:
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- * "acpi:IBM0001:ACPI0001"
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- */
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-int acpi_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)
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-{
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- return __acpi_device_uevent_modalias(acpi_companion_match(dev), env);
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-}
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-EXPORT_SYMBOL_GPL(acpi_device_uevent_modalias);
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-
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-static int __acpi_device_modalias(struct acpi_device *adev, char *buf, int size)
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-{
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- int len, count;
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-
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- if (!adev)
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- return -ENODEV;
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-
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- if (list_empty(&adev->pnp.ids))
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- return 0;
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-
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- len = create_pnp_modalias(adev, buf, size - 1);
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- if (len < 0) {
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- return len;
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- } else if (len > 0) {
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- buf[len++] = '\n';
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- size -= len;
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- }
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- if (!adev->data.of_compatible)
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- return len;
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-
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- count = create_of_modalias(adev, buf + len, size - 1);
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- if (count < 0) {
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- return count;
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- } else if (count > 0) {
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- len += count;
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- buf[len++] = '\n';
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- }
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-
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- return len;
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-}
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-
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-/*
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- * Creates modalias sysfs attribute for ACPI enumerated devices.
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- * Because the other buses does not support ACPI HIDs & CIDs.
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- * e.g. for a device with hid:IBM0001 and cid:ACPI0001 you get:
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- * "acpi:IBM0001:ACPI0001"
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- */
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-int acpi_device_modalias(struct device *dev, char *buf, int size)
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-{
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- return __acpi_device_modalias(acpi_companion_match(dev), buf, size);
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-}
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-EXPORT_SYMBOL_GPL(acpi_device_modalias);
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-
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-static ssize_t
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-acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) {
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- return __acpi_device_modalias(to_acpi_device(dev), buf, 1024);
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-}
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-static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
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bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent)
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{
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@@ -701,423 +444,6 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src)
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unlock_device_hotplug();
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}
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-static ssize_t real_power_state_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- struct acpi_device *adev = to_acpi_device(dev);
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- int state;
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- int ret;
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-
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- ret = acpi_device_get_power(adev, &state);
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- if (ret)
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- return ret;
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-
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- return sprintf(buf, "%s\n", acpi_power_state_string(state));
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-}
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-
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-static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL);
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-
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-static ssize_t power_state_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- struct acpi_device *adev = to_acpi_device(dev);
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-
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- return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state));
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-}
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-
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-static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
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-
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-static ssize_t
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-acpi_eject_store(struct device *d, struct device_attribute *attr,
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- const char *buf, size_t count)
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-{
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- struct acpi_device *acpi_device = to_acpi_device(d);
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- acpi_object_type not_used;
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- acpi_status status;
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-
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- if (!count || buf[0] != '1')
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- return -EINVAL;
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-
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- if ((!acpi_device->handler || !acpi_device->handler->hotplug.enabled)
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- && !acpi_device->driver)
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- return -ENODEV;
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-
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- status = acpi_get_type(acpi_device->handle, ¬_used);
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- if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
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- return -ENODEV;
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-
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- get_device(&acpi_device->dev);
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- status = acpi_hotplug_schedule(acpi_device, ACPI_OST_EC_OSPM_EJECT);
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- if (ACPI_SUCCESS(status))
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- return count;
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-
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- put_device(&acpi_device->dev);
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- acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
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- ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
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- return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
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-}
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-
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-static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
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-
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-static ssize_t
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-acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) {
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- struct acpi_device *acpi_dev = to_acpi_device(dev);
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-
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- return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev));
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-}
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-static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
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-
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-static ssize_t acpi_device_uid_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- struct acpi_device *acpi_dev = to_acpi_device(dev);
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-
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- return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id);
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-}
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-static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL);
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-
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-static ssize_t acpi_device_adr_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- struct acpi_device *acpi_dev = to_acpi_device(dev);
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-
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- return sprintf(buf, "0x%08x\n",
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- (unsigned int)(acpi_dev->pnp.bus_address));
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-}
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-static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL);
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-
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-static ssize_t
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-acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
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- struct acpi_device *acpi_dev = to_acpi_device(dev);
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- struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
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- int result;
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-
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- result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
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- if (result)
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- goto end;
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-
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- result = sprintf(buf, "%s\n", (char*)path.pointer);
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- kfree(path.pointer);
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-end:
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- return result;
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-}
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-static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
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-
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-/* sysfs file that shows description text from the ACPI _STR method */
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-static ssize_t description_show(struct device *dev,
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- struct device_attribute *attr,
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- char *buf) {
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- struct acpi_device *acpi_dev = to_acpi_device(dev);
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- int result;
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-
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- if (acpi_dev->pnp.str_obj == NULL)
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- return 0;
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-
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- /*
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- * The _STR object contains a Unicode identifier for a device.
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- * We need to convert to utf-8 so it can be displayed.
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- */
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- result = utf16s_to_utf8s(
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- (wchar_t *)acpi_dev->pnp.str_obj->buffer.pointer,
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- acpi_dev->pnp.str_obj->buffer.length,
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- UTF16_LITTLE_ENDIAN, buf,
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- PAGE_SIZE);
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-
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- buf[result++] = '\n';
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-
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- return result;
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-}
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-static DEVICE_ATTR(description, 0444, description_show, NULL);
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-
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-static ssize_t
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-acpi_device_sun_show(struct device *dev, struct device_attribute *attr,
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- char *buf) {
|
|
|
- struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
- acpi_status status;
|
|
|
- unsigned long long sun;
|
|
|
-
|
|
|
- status = acpi_evaluate_integer(acpi_dev->handle, "_SUN", NULL, &sun);
|
|
|
- if (ACPI_FAILURE(status))
|
|
|
- return -ENODEV;
|
|
|
-
|
|
|
- return sprintf(buf, "%llu\n", sun);
|
|
|
-}
|
|
|
-static DEVICE_ATTR(sun, 0444, acpi_device_sun_show, NULL);
|
|
|
-
|
|
|
-static ssize_t status_show(struct device *dev, struct device_attribute *attr,
|
|
|
- char *buf) {
|
|
|
- struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
- acpi_status status;
|
|
|
- unsigned long long sta;
|
|
|
-
|
|
|
- status = acpi_evaluate_integer(acpi_dev->handle, "_STA", NULL, &sta);
|
|
|
- if (ACPI_FAILURE(status))
|
|
|
- return -ENODEV;
|
|
|
-
|
|
|
- return sprintf(buf, "%llu\n", sta);
|
|
|
-}
|
|
|
-static DEVICE_ATTR_RO(status);
|
|
|
-
|
|
|
-static int acpi_device_setup_files(struct acpi_device *dev)
|
|
|
-{
|
|
|
- struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
|
- acpi_status status;
|
|
|
- int result = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * Devices gotten from FADT don't have a "path" attribute
|
|
|
- */
|
|
|
- if (dev->handle) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_path);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- if (!list_empty(&dev->pnp.ids)) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_hid);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
-
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_modalias);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * If device has _STR, 'description' file is created
|
|
|
- */
|
|
|
- if (acpi_has_method(dev->handle, "_STR")) {
|
|
|
- status = acpi_evaluate_object(dev->handle, "_STR",
|
|
|
- NULL, &buffer);
|
|
|
- if (ACPI_FAILURE(status))
|
|
|
- buffer.pointer = NULL;
|
|
|
- dev->pnp.str_obj = buffer.pointer;
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_description);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- if (dev->pnp.type.bus_address)
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_adr);
|
|
|
- if (dev->pnp.unique_id)
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_uid);
|
|
|
-
|
|
|
- if (acpi_has_method(dev->handle, "_SUN")) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_sun);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- if (acpi_has_method(dev->handle, "_STA")) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_status);
|
|
|
- if (result)
|
|
|
- goto end;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * If device has _EJ0, 'eject' file is created that is used to trigger
|
|
|
- * hot-removal function from userland.
|
|
|
- */
|
|
|
- if (acpi_has_method(dev->handle, "_EJ0")) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_eject);
|
|
|
- if (result)
|
|
|
- return result;
|
|
|
- }
|
|
|
-
|
|
|
- if (dev->flags.power_manageable) {
|
|
|
- result = device_create_file(&dev->dev, &dev_attr_power_state);
|
|
|
- if (result)
|
|
|
- return result;
|
|
|
-
|
|
|
- if (dev->power.flags.power_resources)
|
|
|
- result = device_create_file(&dev->dev,
|
|
|
- &dev_attr_real_power_state);
|
|
|
- }
|
|
|
-
|
|
|
-end:
|
|
|
- return result;
|
|
|
-}
|
|
|
-
|
|
|
-static void acpi_device_remove_files(struct acpi_device *dev)
|
|
|
-{
|
|
|
- if (dev->flags.power_manageable) {
|
|
|
- device_remove_file(&dev->dev, &dev_attr_power_state);
|
|
|
- if (dev->power.flags.power_resources)
|
|
|
- device_remove_file(&dev->dev,
|
|
|
- &dev_attr_real_power_state);
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * If device has _STR, remove 'description' file
|
|
|
- */
|
|
|
- if (acpi_has_method(dev->handle, "_STR")) {
|
|
|
- kfree(dev->pnp.str_obj);
|
|
|
- device_remove_file(&dev->dev, &dev_attr_description);
|
|
|
- }
|
|
|
- /*
|
|
|
- * If device has _EJ0, remove 'eject' file.
|
|
|
- */
|
|
|
- if (acpi_has_method(dev->handle, "_EJ0"))
|
|
|
- device_remove_file(&dev->dev, &dev_attr_eject);
|
|
|
-
|
|
|
- if (acpi_has_method(dev->handle, "_SUN"))
|
|
|
- device_remove_file(&dev->dev, &dev_attr_sun);
|
|
|
-
|
|
|
- if (dev->pnp.unique_id)
|
|
|
- device_remove_file(&dev->dev, &dev_attr_uid);
|
|
|
- if (dev->pnp.type.bus_address)
|
|
|
- device_remove_file(&dev->dev, &dev_attr_adr);
|
|
|
- device_remove_file(&dev->dev, &dev_attr_modalias);
|
|
|
- device_remove_file(&dev->dev, &dev_attr_hid);
|
|
|
- if (acpi_has_method(dev->handle, "_STA"))
|
|
|
- device_remove_file(&dev->dev, &dev_attr_status);
|
|
|
- if (dev->handle)
|
|
|
- device_remove_file(&dev->dev, &dev_attr_path);
|
|
|
-}
|
|
|
-/* --------------------------------------------------------------------------
|
|
|
- ACPI Bus operations
|
|
|
- -------------------------------------------------------------------------- */
|
|
|
-
|
|
|
-/**
|
|
|
- * acpi_of_match_device - Match device object using the "compatible" property.
|
|
|
- * @adev: ACPI device object to match.
|
|
|
- * @of_match_table: List of device IDs to match against.
|
|
|
- *
|
|
|
- * If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of
|
|
|
- * identifiers and a _DSD object with the "compatible" property, use that
|
|
|
- * property to match against the given list of identifiers.
|
|
|
- */
|
|
|
-static bool acpi_of_match_device(struct acpi_device *adev,
|
|
|
- const struct of_device_id *of_match_table)
|
|
|
-{
|
|
|
- const union acpi_object *of_compatible, *obj;
|
|
|
- int i, nval;
|
|
|
-
|
|
|
- if (!adev)
|
|
|
- return false;
|
|
|
-
|
|
|
- of_compatible = adev->data.of_compatible;
|
|
|
- if (!of_match_table || !of_compatible)
|
|
|
- return false;
|
|
|
-
|
|
|
- if (of_compatible->type == ACPI_TYPE_PACKAGE) {
|
|
|
- nval = of_compatible->package.count;
|
|
|
- obj = of_compatible->package.elements;
|
|
|
- } else { /* Must be ACPI_TYPE_STRING. */
|
|
|
- nval = 1;
|
|
|
- obj = of_compatible;
|
|
|
- }
|
|
|
- /* Now we can look for the driver DT compatible strings */
|
|
|
- for (i = 0; i < nval; i++, obj++) {
|
|
|
- const struct of_device_id *id;
|
|
|
-
|
|
|
- for (id = of_match_table; id->compatible[0]; id++)
|
|
|
- if (!strcasecmp(obj->string.pointer, id->compatible))
|
|
|
- return true;
|
|
|
- }
|
|
|
-
|
|
|
- return false;
|
|
|
-}
|
|
|
-
|
|
|
-static bool __acpi_match_device_cls(const struct acpi_device_id *id,
|
|
|
- struct acpi_hardware_id *hwid)
|
|
|
-{
|
|
|
- int i, msk, byte_shift;
|
|
|
- char buf[3];
|
|
|
-
|
|
|
- if (!id->cls)
|
|
|
- return false;
|
|
|
-
|
|
|
- /* Apply class-code bitmask, before checking each class-code byte */
|
|
|
- for (i = 1; i <= 3; i++) {
|
|
|
- byte_shift = 8 * (3 - i);
|
|
|
- msk = (id->cls_msk >> byte_shift) & 0xFF;
|
|
|
- if (!msk)
|
|
|
- continue;
|
|
|
-
|
|
|
- sprintf(buf, "%02x", (id->cls >> byte_shift) & msk);
|
|
|
- if (strncmp(buf, &hwid->id[(i - 1) * 2], 2))
|
|
|
- return false;
|
|
|
- }
|
|
|
- return true;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct acpi_device_id *__acpi_match_device(
|
|
|
- struct acpi_device *device,
|
|
|
- const struct acpi_device_id *ids,
|
|
|
- const struct of_device_id *of_ids)
|
|
|
-{
|
|
|
- const struct acpi_device_id *id;
|
|
|
- struct acpi_hardware_id *hwid;
|
|
|
-
|
|
|
- /*
|
|
|
- * If the device is not present, it is unnecessary to load device
|
|
|
- * driver for it.
|
|
|
- */
|
|
|
- if (!device || !device->status.present)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- list_for_each_entry(hwid, &device->pnp.ids, list) {
|
|
|
- /* First, check the ACPI/PNP IDs provided by the caller. */
|
|
|
- for (id = ids; id->id[0] || id->cls; id++) {
|
|
|
- if (id->id[0] && !strcmp((char *) id->id, hwid->id))
|
|
|
- return id;
|
|
|
- else if (id->cls && __acpi_match_device_cls(id, hwid))
|
|
|
- return id;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * Next, check ACPI_DT_NAMESPACE_HID and try to match the
|
|
|
- * "compatible" property if found.
|
|
|
- *
|
|
|
- * The id returned by the below is not valid, but the only
|
|
|
- * caller passing non-NULL of_ids here is only interested in
|
|
|
- * whether or not the return value is NULL.
|
|
|
- */
|
|
|
- if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)
|
|
|
- && acpi_of_match_device(device, of_ids))
|
|
|
- return id;
|
|
|
- }
|
|
|
- return NULL;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * acpi_match_device - Match a struct device against a given list of ACPI IDs
|
|
|
- * @ids: Array of struct acpi_device_id object to match against.
|
|
|
- * @dev: The device structure to match.
|
|
|
- *
|
|
|
- * Check if @dev has a valid ACPI handle and if there is a struct acpi_device
|
|
|
- * object for that handle and use that object to match against a given list of
|
|
|
- * device IDs.
|
|
|
- *
|
|
|
- * Return a pointer to the first matching ID on success or %NULL on failure.
|
|
|
- */
|
|
|
-const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
|
|
|
- const struct device *dev)
|
|
|
-{
|
|
|
- return __acpi_match_device(acpi_companion_match(dev), ids, NULL);
|
|
|
-}
|
|
|
-EXPORT_SYMBOL_GPL(acpi_match_device);
|
|
|
-
|
|
|
-int acpi_match_device_ids(struct acpi_device *device,
|
|
|
- const struct acpi_device_id *ids)
|
|
|
-{
|
|
|
- return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT;
|
|
|
-}
|
|
|
-EXPORT_SYMBOL(acpi_match_device_ids);
|
|
|
-
|
|
|
-bool acpi_driver_match_device(struct device *dev,
|
|
|
- const struct device_driver *drv)
|
|
|
-{
|
|
|
- if (!drv->acpi_match_table)
|
|
|
- return acpi_of_match_device(ACPI_COMPANION(dev),
|
|
|
- drv->of_match_table);
|
|
|
-
|
|
|
- return !!__acpi_match_device(acpi_companion_match(dev),
|
|
|
- drv->acpi_match_table, drv->of_match_table);
|
|
|
-}
|
|
|
-EXPORT_SYMBOL_GPL(acpi_driver_match_device);
|
|
|
-
|
|
|
static void acpi_free_power_resources_lists(struct acpi_device *device)
|
|
|
{
|
|
|
int i;
|
|
|
@@ -1144,144 +470,6 @@ static void acpi_device_release(struct device *dev)
|
|
|
kfree(acpi_dev);
|
|
|
}
|
|
|
|
|
|
-static int acpi_bus_match(struct device *dev, struct device_driver *drv)
|
|
|
-{
|
|
|
- struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
- struct acpi_driver *acpi_drv = to_acpi_driver(drv);
|
|
|
-
|
|
|
- return acpi_dev->flags.match_driver
|
|
|
- && !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
|
|
|
-}
|
|
|
-
|
|
|
-static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
|
-{
|
|
|
- return __acpi_device_uevent_modalias(to_acpi_device(dev), env);
|
|
|
-}
|
|
|
-
|
|
|
-static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
|
|
|
-{
|
|
|
- struct acpi_device *device = data;
|
|
|
-
|
|
|
- device->driver->ops.notify(device, event);
|
|
|
-}
|
|
|
-
|
|
|
-static void acpi_device_notify_fixed(void *data)
|
|
|
-{
|
|
|
- struct acpi_device *device = data;
|
|
|
-
|
|
|
- /* Fixed hardware devices have no handles */
|
|
|
- acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
|
|
|
-}
|
|
|
-
|
|
|
-static u32 acpi_device_fixed_event(void *data)
|
|
|
-{
|
|
|
- acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);
|
|
|
- return ACPI_INTERRUPT_HANDLED;
|
|
|
-}
|
|
|
-
|
|
|
-static int acpi_device_install_notify_handler(struct acpi_device *device)
|
|
|
-{
|
|
|
- acpi_status status;
|
|
|
-
|
|
|
- if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
|
|
|
- status =
|
|
|
- acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
|
|
|
- acpi_device_fixed_event,
|
|
|
- device);
|
|
|
- else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
|
|
|
- status =
|
|
|
- acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
|
|
|
- acpi_device_fixed_event,
|
|
|
- device);
|
|
|
- else
|
|
|
- status = acpi_install_notify_handler(device->handle,
|
|
|
- ACPI_DEVICE_NOTIFY,
|
|
|
- acpi_device_notify,
|
|
|
- device);
|
|
|
-
|
|
|
- if (ACPI_FAILURE(status))
|
|
|
- return -EINVAL;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void acpi_device_remove_notify_handler(struct acpi_device *device)
|
|
|
-{
|
|
|
- if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
|
|
|
- acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
|
|
|
- acpi_device_fixed_event);
|
|
|
- else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
|
|
|
- acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
|
|
|
- acpi_device_fixed_event);
|
|
|
- else
|
|
|
- acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
|
|
|
- acpi_device_notify);
|
|
|
-}
|
|
|
-
|
|
|
-static int acpi_device_probe(struct device *dev)
|
|
|
-{
|
|
|
- struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
- struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
|
|
|
- int ret;
|
|
|
-
|
|
|
- if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev))
|
|
|
- return -EINVAL;
|
|
|
-
|
|
|
- if (!acpi_drv->ops.add)
|
|
|
- return -ENOSYS;
|
|
|
-
|
|
|
- ret = acpi_drv->ops.add(acpi_dev);
|
|
|
- if (ret)
|
|
|
- return ret;
|
|
|
-
|
|
|
- acpi_dev->driver = acpi_drv;
|
|
|
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
- "Driver [%s] successfully bound to device [%s]\n",
|
|
|
- acpi_drv->name, acpi_dev->pnp.bus_id));
|
|
|
-
|
|
|
- if (acpi_drv->ops.notify) {
|
|
|
- ret = acpi_device_install_notify_handler(acpi_dev);
|
|
|
- if (ret) {
|
|
|
- if (acpi_drv->ops.remove)
|
|
|
- acpi_drv->ops.remove(acpi_dev);
|
|
|
-
|
|
|
- acpi_dev->driver = NULL;
|
|
|
- acpi_dev->driver_data = NULL;
|
|
|
- return ret;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
|
|
|
- acpi_drv->name, acpi_dev->pnp.bus_id));
|
|
|
- get_device(dev);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int acpi_device_remove(struct device * dev)
|
|
|
-{
|
|
|
- struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
- struct acpi_driver *acpi_drv = acpi_dev->driver;
|
|
|
-
|
|
|
- if (acpi_drv) {
|
|
|
- if (acpi_drv->ops.notify)
|
|
|
- acpi_device_remove_notify_handler(acpi_dev);
|
|
|
- if (acpi_drv->ops.remove)
|
|
|
- acpi_drv->ops.remove(acpi_dev);
|
|
|
- }
|
|
|
- acpi_dev->driver = NULL;
|
|
|
- acpi_dev->driver_data = NULL;
|
|
|
-
|
|
|
- put_device(dev);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-struct bus_type acpi_bus_type = {
|
|
|
- .name = "acpi",
|
|
|
- .match = acpi_bus_match,
|
|
|
- .probe = acpi_device_probe,
|
|
|
- .remove = acpi_device_remove,
|
|
|
- .uevent = acpi_device_uevent,
|
|
|
-};
|
|
|
-
|
|
|
static void acpi_device_del(struct acpi_device *device)
|
|
|
{
|
|
|
mutex_lock(&acpi_device_lock);
|
|
|
@@ -1528,47 +716,6 @@ struct acpi_device *acpi_get_next_child(struct device *dev,
|
|
|
return next == head ? NULL : list_entry(next, struct acpi_device, node);
|
|
|
}
|
|
|
|
|
|
-/* --------------------------------------------------------------------------
|
|
|
- Driver Management
|
|
|
- -------------------------------------------------------------------------- */
|
|
|
-/**
|
|
|
- * acpi_bus_register_driver - register a driver with the ACPI bus
|
|
|
- * @driver: driver being registered
|
|
|
- *
|
|
|
- * Registers a driver with the ACPI bus. Searches the namespace for all
|
|
|
- * devices that match the driver's criteria and binds. Returns zero for
|
|
|
- * success or a negative error status for failure.
|
|
|
- */
|
|
|
-int acpi_bus_register_driver(struct acpi_driver *driver)
|
|
|
-{
|
|
|
- int ret;
|
|
|
-
|
|
|
- if (acpi_disabled)
|
|
|
- return -ENODEV;
|
|
|
- driver->drv.name = driver->name;
|
|
|
- driver->drv.bus = &acpi_bus_type;
|
|
|
- driver->drv.owner = driver->owner;
|
|
|
-
|
|
|
- ret = driver_register(&driver->drv);
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-EXPORT_SYMBOL(acpi_bus_register_driver);
|
|
|
-
|
|
|
-/**
|
|
|
- * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus
|
|
|
- * @driver: driver to unregister
|
|
|
- *
|
|
|
- * Unregisters a driver with the ACPI bus. Searches the namespace for all
|
|
|
- * devices that match the driver's criteria and unbinds.
|
|
|
- */
|
|
|
-void acpi_bus_unregister_driver(struct acpi_driver *driver)
|
|
|
-{
|
|
|
- driver_unregister(&driver->drv);
|
|
|
-}
|
|
|
-
|
|
|
-EXPORT_SYMBOL(acpi_bus_unregister_driver);
|
|
|
-
|
|
|
/* --------------------------------------------------------------------------
|
|
|
Device Enumeration
|
|
|
-------------------------------------------------------------------------- */
|
|
|
@@ -2744,12 +1891,6 @@ int __init acpi_scan_init(void)
|
|
|
{
|
|
|
int result;
|
|
|
|
|
|
- result = bus_register(&acpi_bus_type);
|
|
|
- if (result) {
|
|
|
- /* We don't want to quit even if we failed to add suspend/resume */
|
|
|
- printk(KERN_ERR PREFIX "Could not register bus type\n");
|
|
|
- }
|
|
|
-
|
|
|
acpi_pci_root_init();
|
|
|
acpi_pci_link_init();
|
|
|
acpi_processor_init();
|
Rafael J. Wysocki