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authorAndi Kleen <ak@linux.intel.com>2012-01-26 00:09:12 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-26 16:49:06 -0800
commitfa8031aefec0cf7ea6c2387c93610d99d9659aa2 (patch)
treea174505948159296198a66874655868b78718bde /drivers/cpufreq/longrun.c
parent2f1e097e24defe64a86535b53768f5c8ab0368d1 (diff)
downloadlinaro-lsk-fa8031aefec0cf7ea6c2387c93610d99d9659aa2.tar.gz
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>
Diffstat (limited to 'drivers/cpufreq/longrun.c')
-rw-r--r--drivers/cpufreq/longrun.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c
index 34ea359b370..8bc9f5fbbae 100644
--- a/drivers/cpufreq/longrun.c
+++ b/drivers/cpufreq/longrun.c
@@ -14,6 +14,7 @@
#include <asm/msr.h>
#include <asm/processor.h>
+#include <asm/cpu_device_id.h>
static struct cpufreq_driver longrun_driver;
@@ -288,6 +289,12 @@ static struct cpufreq_driver longrun_driver = {
.owner = THIS_MODULE,
};
+static const struct x86_cpu_id longrun_ids[] = {
+ { X86_VENDOR_TRANSMETA, X86_FAMILY_ANY, X86_MODEL_ANY,
+ X86_FEATURE_LONGRUN },
+ {}
+};
+MODULE_DEVICE_TABLE(x86cpu, longrun_ids);
/**
* longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver
@@ -296,12 +303,8 @@ static struct cpufreq_driver longrun_driver = {
*/
static int __init longrun_init(void)
{
- struct cpuinfo_x86 *c = &cpu_data(0);
-
- if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
- !cpu_has(c, X86_FEATURE_LONGRUN))
+ if (!x86_match_cpu(longrun_ids))
return -ENODEV;
-
return cpufreq_register_driver(&longrun_driver);
}