From fa8031aefec0cf7ea6c2387c93610d99d9659aa2 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:12 +0100 Subject: 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 Cc: Kay Sievers Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman --- drivers/cpufreq/e_powersaver.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'drivers/cpufreq/e_powersaver.c') diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 4bd6815d317b..3fffbe6025cd 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -16,6 +16,7 @@ #include #include +#include #include #include @@ -437,18 +438,19 @@ static struct cpufreq_driver eps_driver = { .attr = eps_attr, }; + +/* This driver will work only on Centaur C7 processors with + * Enhanced SpeedStep/PowerSaver registers */ +static const struct x86_cpu_id eps_cpu_id[] = { + { X86_VENDOR_CENTAUR, 6, X86_MODEL_ANY, X86_FEATURE_EST }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, eps_cpu_id); + static int __init eps_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - /* This driver will work only on Centaur C7 processors with - * Enhanced SpeedStep/PowerSaver registers */ - if (c->x86_vendor != X86_VENDOR_CENTAUR - || c->x86 != 6 || c->x86_model < 10) - return -ENODEV; - if (!cpu_has(c, X86_FEATURE_EST)) + if (!x86_match_cpu(eps_cpu_id) || boot_cpu_data.x86_model < 10) return -ENODEV; - if (cpufreq_register_driver(&eps_driver)) return -EINVAL; return 0; -- cgit v1.2.3