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Merge pull request #5 from solarnz/master

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Merged one more commit from TDR for undervolting with setcpu.
This commit is contained in:
Chris Trotman 2011-07-02 18:09:57 -07:00
commit 20b310c48d
2 changed files with 19 additions and 4 deletions
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9
arch/arm/mach-tegra/dvfs.c
View File

@ -234,11 +234,12 @@ __tegra_dvfs_set_rate(struct dvfs *d, unsigned long rate)
i++;
if (strcmp(d->clk_name, "cpu") == 0)
{
while (j < FREQCOUNT && (rate / 1000) < cpufrequency[j]) // TODO: Make more robust
j++;
mvoffset = cpuuvoffset[j];
for (j = 0; j < FREQCOUNT; j++)
if (cpufrequency[j] == (rate / 1000)) break;
if (j < FREQCOUNT) mvoffset = cpuuvoffset[j];
else pr_warn("tegra_dvfs: failed to find undervolt amount for rate %lu\n", rate);
}
else mvoffset = 0;
d->cur_millivolts = d->millivolts[i] - mvoffset;
}

14
drivers/cpufreq/cpufreq.c
View File

@ -695,6 +695,16 @@ static ssize_t show_UV_mV_table(struct cpufreq_policy *policy, char *buf)
return table - buf;
}
static ssize_t show_cpuinfo_max_mV(struct cpufreq_policy *policy, char *buf)
{
sprintf(buf, "%u\n", CPUMVMAX);
}
static ssize_t show_cpuinfo_min_mV(struct cpufreq_policy *policy, char *buf)
{
sprintf(buf, "%u\n", CPUMVMIN);
}
static ssize_t store_UV_mV_table(struct cpufreq_policy *policy, char *buf, size_t count)
{
int tmptable[FREQCOUNT];
@ -715,6 +725,8 @@ static ssize_t store_UV_mV_table(struct cpufreq_policy *policy, char *buf, size_
cpufreq_freq_attr_ro_perm(cpuinfo_cur_freq, 0400);
cpufreq_freq_attr_ro(cpuinfo_min_freq);
cpufreq_freq_attr_ro(cpuinfo_max_freq);
cpufreq_freq_attr_ro(cpuinfo_min_mV);
cpufreq_freq_attr_ro(cpuinfo_max_mV);
cpufreq_freq_attr_ro(cpuinfo_transition_latency);
cpufreq_freq_attr_ro(scaling_available_governors);
cpufreq_freq_attr_ro(scaling_driver);
@ -732,6 +744,8 @@ cpufreq_freq_attr_rw(UV_mV_table);
static struct attribute *default_attrs[] = {
&cpuinfo_min_freq.attr,
&cpuinfo_max_freq.attr,
&cpuinfo_min_mV.attr,
&cpuinfo_max_mV.attr,
&cpuinfo_transition_latency.attr,
&scaling_min_freq.attr,
&scaling_max_freq.attr,