cpufreq: Add support for x86 cpuinfo auto loading v4
This marks all the x86 cpuinfo tables to the CPU specific device drivers,
to allow auto loading by udev. This should simplify the distribution
startup scripts for this greatly.
I didn't add MODULE_DEVICE_IDs to the centrino and p4-clockmod drivers,
because those probably shouldn't be auto loaded and the acpi driver
be used instead (not fully sure on that, would appreciate feedback)
The old nforce drivers autoload based on the PCI ID.
ACPI cpufreq is autoloaded in another patch.
v3: Autoload gx based on PCI IDs only. Remove cpu check (Dave Jones)
v4: Use newly introduce HW_PSTATE feature for powernow-k8 loading
Cc: Dave Jones <davej@redhat.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c
index d71d9f3..501d167 100644
--- a/drivers/cpufreq/powernow-k7.c
+++ b/drivers/cpufreq/powernow-k7.c
@@ -28,6 +28,7 @@
#include <asm/timer.h> /* Needed for recalibrate_cpu_khz() */
#include <asm/msr.h>
#include <asm/system.h>
+#include <asm/cpu_device_id.h>
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
#include <linux/acpi.h>
@@ -110,18 +111,19 @@
return delta < 5;
}
+static const struct x86_cpu_id powernow_k7_cpuids[] = {
+ { X86_VENDOR_AMD, 7, },
+ {}
+};
+MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids);
+
static int check_powernow(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int maxei, eax, ebx, ecx, edx;
- if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) {
-#ifdef MODULE
- printk(KERN_INFO PFX "This module only works with "
- "AMD K7 CPUs\n");
-#endif
+ if (!x86_match_cpu(powernow_k7_cpuids))
return 0;
- }
/* Get maximum capabilities */
maxei = cpuid_eax(0x80000000);