Subject: [PATCH] [acpi driver model] Add per-driver sysfs structures

- Define struct acpi_driver_sysfs for declaring arrays
  of attributes to add for each device that is bound to
  that driver.

- Add macros for helping define the structure, and
  helpers for including them in the driver structure.

Signed-off-by: Patrick Mochel <mochel@linux.intel.com>

---

 include/acpi/sysfs.h |   53 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)

applies-to: 1756a404c4002067c87fb2c8a56efec36c41c724
478d97931714683fb87b10a381d7fca0cc4c4f11
diff --git a/include/acpi/sysfs.h b/include/acpi/sysfs.h
index c4dd447..bca6af1 100644
--- a/include/acpi/sysfs.h
+++ b/include/acpi/sysfs.h
@@ -72,3 +72,56 @@ struct acpi_dev_attr {
 	.ad_store	= __name##_store,			\
 	.ad_test	= __name##_test,			\
 }
+
+
+
+/*
+ *	This is the per-driver structure that defines all the files
+ *	to be added for each device that the driver is bound to.
+ */
+
+struct acpi_driver_sysfs {
+	struct acpi_dev_attr	* s_attrs;
+	u32			s_num_attrs;
+};
+
+
+/*
+ *	A driver should use these macros to declare a sysfs interface
+ *	for itself. If a driver doesn't have a sysfs interface, then
+ *	it should use the acpi_driver_sysfs_none() macro.
+ */
+
+#define acpi_driver_sysfs(__name)			\
+struct acpi_driver_sysfs __name##_sysfs = {		\
+	.s_attrs	= __name##_attrs,		\
+	.s_num_attrs	= ARRAY_SIZE(__name##_attrs),	\
+}
+
+#define acpi_driver_sysfs_none(__name)			\
+struct acpi_driver_sysfs __name##_sysfs = {		\
+	.s_num_attrs	= 0,				\
+}
+
+
+
+/*
+ *	These macros are used by include/acpi/driver.h to
+ *	simplify the acpi driver declaration macro by providing 
+ *	for the case where the ACPI sysfs interface is enabled or
+ *	disabled.
+ */
+
+#ifdef CONFIG_ACPI_DM_SYSFS
+
+#define acpi_driver_sysfs_extern(__name)	\
+extern struct acpi_driver_sysfs __name##_sysfs
+
+#define acpi_driver_sysfs_ref(__name) 	& __name##_sysfs
+
+#else /* CONFIG_ACPI_DM_SYSFS */
+
+#define acpi_driver_sysfs_extern(__name)
+#define acpi_driver_sysfs_ref(__name) 	NULL
+
+#endif /* CONFIG_ACPI_DM_SYSFS */
---
0.99.9.GIT