/**
* longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver
*
* Initializes the LongRun support.
*/
static int __init longrun_init(void)
{
int result;
struct cpufreq_driver *driver;
struct cpuinfo_x86 *c = cpu_data;
if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
!cpu_has(c, X86_FEATURE_LONGRUN))
return 0;
/* initialization of main "cpufreq" code*/
driver = kmalloc(sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
driver->policy = (struct cpufreq_policy *) (driver + 1);
if (longrun_determine_freqs(&longrun_low_freq, &longrun_high_freq)) {
kfree(driver);
return -EIO;
}
driver->policy[0].cpuinfo.min_freq = longrun_low_freq;
driver->policy[0].cpuinfo.max_freq = longrun_high_freq;
driver->policy[0].cpuinfo.transition_latency = CPUFREQ_ETERNAL;
longrun_get_policy(&driver->policy[0]);
#ifdef CONFIG_CPU_FREQ_24_API
driver->cpu_cur_freq[0] = longrun_high_freq; /* dummy value */
#endif
driver->verify = &longrun_verify_policy;
driver->setpolicy = &longrun_set_policy;
longrun_driver = driver;
result = cpufreq_register(driver);
if (result) {
longrun_driver = NULL;
kfree(driver);
}
return result;
}
static int __init longrun_cpu_init(struct cpufreq_policy *policy)
{
int result = 0;
/* capability check */
if (policy->cpu != 0)
return -ENODEV;
/* detect low and high frequency */
result = longrun_determine_freqs(&longrun_low_freq, &longrun_high_freq);
if (result)
return result;
/* cpuinfo and default policy values */
policy->cpuinfo.min_freq = longrun_low_freq;
policy->cpuinfo.max_freq = longrun_high_freq;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
longrun_get_policy(policy);
return 0;
}