Introduce a new method, cpufreq_drv_type(), that returns the type of the

driver.  This used to be handled by cpufreq_drv_settings() but it's
useful to get the type/flags separately from getting the settings.
(For example, you don't have to pass an array of cf_setting just to find
the driver type.)

Use this new method in our in-tree drivers to detect reliably if acpi_perf
is present and owns the hardware.  This simplifies logic in drivers as well
as fixing a bug introduced in my last commit where too many drivers attached.

1 files changed, 8 insertions, 0 deletions

diff --git a/sys/kern/cpufreq_if.m b/sys/kern/cpufreq_if.m
index de1d531..8b1213e 100644
--- a/sys/kern/cpufreq_if.m
+++ b/sys/kern/cpufreq_if.m
@@ -88,5 +88,13 @@ METHOD int drv_settings {
 	device_t		dev;
 	struct cf_setting	*sets;
 	int			*count;
+};
+
+#
+# Get an individual driver's type.
+#
+METHOD int drv_type {
+	device_t		dev;
 	int			*type;
 };
+