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cpufreq: dt: No need to fetch voltage-tolerance 

Its already done by core and we don't need to get it anymore.  And so,
we don't need to get of node in cpufreq_init() anymore, move that to
find_supply_name() instead.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Viresh Kumar 2016-02-09 10:30:47 +05:30 committed by Rafael J. Wysocki
parent 78c3ba5df9
commit df2c8ec28e
1 changed files with 23 additions and 23 deletions
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46
drivers/cpufreq/cpufreq-dt.c
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@ -33,7 +33,6 @@ struct private_data {
struct device *cpu_dev;
struct regulator *cpu_reg;
struct thermal_cooling_device *cdev;
unsigned int voltage_tolerance; /* in percentage */
const char *reg_name;
};
@ -55,24 +54,38 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index)
* An earlier version of opp-v1 bindings used to name the regulator
* "cpu0-supply", we still need to handle that for backwards compatibility.
*/
static const char *find_supply_name(struct device *dev, struct device_node *np)
static const char *find_supply_name(struct device *dev)
{
struct device_node *np;
struct property *pp;
int cpu = dev->id;
const char *name = NULL;
np = of_node_get(dev->of_node);
/* This must be valid for sure */
if (WARN_ON(!np))
return NULL;
/* Try "cpu0" for older DTs */
if (!cpu) {
pp = of_find_property(np, "cpu0-supply", NULL);
if (pp)
return "cpu0";
if (pp) {
name = "cpu0";
goto node_put;
}
}
pp = of_find_property(np, "cpu-supply", NULL);
if (pp)
return "cpu";
if (pp) {
name = "cpu";
goto node_put;
}
dev_dbg(dev, "no regulator for cpu%d\n", cpu);
return NULL;
node_put:
of_node_put(np);
return name;
}
static int allocate_resources(int cpu, struct device **cdev,
@ -147,7 +160,6 @@ try_again:
static int cpufreq_init(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *freq_table;
struct device_node *np;
struct private_data *priv;
struct device *cpu_dev;
struct regulator *cpu_reg;
@ -164,13 +176,6 @@ static int cpufreq_init(struct cpufreq_policy *policy)
return ret;
}
np = of_node_get(cpu_dev->of_node);
if (!np) {
dev_err(cpu_dev, "failed to find cpu%d node\n", policy->cpu);
ret = -ENOENT;
goto out_put_reg_clk;
}
/* Get OPP-sharing information from "operating-points-v2" bindings */
ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, policy->cpus);
if (ret) {
@ -181,20 +186,20 @@ static int cpufreq_init(struct cpufreq_policy *policy)
if (ret == -ENOENT)
opp_v1 = true;
else
goto out_node_put;
goto out_put_reg_clk;
}
/*
* OPP layer will be taking care of regulators now, but it needs to know
* the name of the regulator first.
*/
name = find_supply_name(cpu_dev, np);
name = find_supply_name(cpu_dev);
if (name) {
ret = dev_pm_opp_set_regulator(cpu_dev, name);
if (ret) {
dev_err(cpu_dev, "Failed to set regulator for cpu%d: %d\n",
policy->cpu, ret);
goto out_node_put;
goto out_put_reg_clk;
}
}
@ -244,7 +249,6 @@ static int cpufreq_init(struct cpufreq_policy *policy)
}
priv->reg_name = name;
of_property_read_u32(np, "voltage-tolerance", &priv->voltage_tolerance);
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
@ -286,8 +290,6 @@ static int cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = transition_latency;
of_node_put(np);
return 0;
out_free_cpufreq_table:
@ -298,8 +300,6 @@ out_free_opp:
dev_pm_opp_of_cpumask_remove_table(policy->cpus);
if (name)
dev_pm_opp_put_regulator(cpu_dev);
out_node_put:
of_node_put(np);
out_put_reg_clk:
clk_put(cpu_clk);
if (!IS_ERR(cpu_reg))