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Date: Tue, 17 Jan 2012 07:21:07 -0500
From: Len Brown <lenb@...nel.org>
To: linux-acpi@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org
Cc: Bob Moore <robert.moore@...el.com>,
Lin Ming <ming.m.lin@...el.com>,
Len Brown <len.brown@...el.com>
Subject: [PATCH 15/50] ACPI 5.0: New interface, acpi_get_event_resources
From: Bob Moore <robert.moore@...el.com>
Executes _AEI and formats the result, similar to acpi_get_current_resources, etc.
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Lin Ming <ming.m.lin@...el.com>
Signed-off-by: Len Brown <len.brown@...el.com>
---
drivers/acpi/acpica/acresrc.h | 4 +++
drivers/acpi/acpica/rsutils.c | 50 +++++++++++++++++++++++++++++++++++++++++
drivers/acpi/acpica/rsxface.c | 40 ++++++++++++++++++++++++++++++++
include/acpi/acpixf.h | 4 +++
4 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h
index 05721b0..61b2e04 100644
--- a/drivers/acpi/acpica/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
@@ -215,6 +215,10 @@ acpi_status
acpi_rs_set_srs_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer);
+acpi_status
+acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
+ struct acpi_buffer *ret_buffer);
+
/*
* rscalc
*/
diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 4409db8..54a9a97 100644
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -594,6 +594,56 @@ acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
/*******************************************************************************
*
+ * FUNCTION: acpi_rs_get_aei_method_data
+ *
+ * PARAMETERS: Node - Device node
+ * ret_buffer - Pointer to a buffer structure for the
+ * results
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to get the _AEI value of an object
+ * contained in an object specified by the handle passed in
+ *
+ * If the function fails an appropriate status will be returned
+ * and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
+ struct acpi_buffer *ret_buffer)
+{
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(rs_get_aei_method_data);
+
+ /* Parameters guaranteed valid by caller */
+
+ /* Execute the method, no parameters */
+
+ status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI,
+ ACPI_BTYPE_BUFFER, &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Make the call to create a resource linked list from the
+ * byte stream buffer that comes back from the _CRS method
+ * execution.
+ */
+ status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
+
+ /* On exit, we must delete the object returned by evaluate_object */
+
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_rs_get_method_data
*
* PARAMETERS: Handle - Handle to the containing object
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index fe86b37..45a9e5e 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -307,6 +307,46 @@ acpi_set_current_resources(acpi_handle device_handle,
ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_event_resources
+ *
+ * PARAMETERS: device_handle - Handle to the device object for the
+ * device we are getting resources
+ * in_buffer - Pointer to a buffer containing the
+ * resources to be set for the device
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to get the event resources for a
+ * specific device. The caller must first acquire a handle for
+ * the desired device. The resource data is passed to the routine
+ * the buffer pointed to by the in_buffer variable. Uses the
+ * _AEI method.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_get_event_resources(acpi_handle device_handle,
+ struct acpi_buffer *ret_buffer)
+{
+ acpi_status status;
+ struct acpi_namespace_node *node;
+
+ ACPI_FUNCTION_TRACE(acpi_get_event_resources);
+
+ /* Validate parameters then dispatch to internal routine */
+
+ status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ status = acpi_rs_get_aei_method_data(node, ret_buffer);
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_event_resources)
+
/******************************************************************************
*
* FUNCTION: acpi_resource_to_address64
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index dd86610..726d937 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -358,6 +358,10 @@ acpi_get_possible_resources(acpi_handle device, struct acpi_buffer *ret_buffer);
#endif
acpi_status
+acpi_get_event_resources(acpi_handle device_handle,
+ struct acpi_buffer *ret_buffer);
+
+acpi_status
acpi_walk_resources(acpi_handle device,
char *name,
acpi_walk_resource_callback user_function, void *context);
--
1.7.9.rc1
--
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