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path: root/drivers/cpufreq/cpufreq-cpu0.c
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Diffstat (limited to 'drivers/cpufreq/cpufreq-cpu0.c')
-rw-r--r--drivers/cpufreq/cpufreq-cpu0.c42
1 files changed, 28 insertions, 14 deletions
diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
index debc5a7..4e5b7fb 100644
--- a/drivers/cpufreq/cpufreq-cpu0.c
+++ b/drivers/cpufreq/cpufreq-cpu0.c
@@ -12,12 +12,12 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/clk.h>
-#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/opp.h>
+#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
@@ -146,7 +146,6 @@ static int cpu0_cpufreq_init(struct cpufreq_policy *policy)
* share the clock and voltage and clock. Use cpufreq affected_cpus
* interface to have all CPUs scaled together.
*/
- policy->shared_type = CPUFREQ_SHARED_TYPE_ANY;
cpumask_setall(policy->cpus);
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
@@ -177,34 +176,32 @@ static struct cpufreq_driver cpu0_cpufreq_driver = {
.attr = cpu0_cpufreq_attr,
};
-static int cpu0_cpufreq_driver_init(void)
+static int cpu0_cpufreq_probe(struct platform_device *pdev)
{
struct device_node *np;
int ret;
- np = of_find_node_by_path("/cpus/cpu@0");
+ for_each_child_of_node(of_find_node_by_path("/cpus"), np) {
+ if (of_get_property(np, "operating-points", NULL))
+ break;
+ }
+
if (!np) {
pr_err("failed to find cpu0 node\n");
return -ENOENT;
}
- cpu_dev = get_cpu_device(0);
- if (!cpu_dev) {
- pr_err("failed to get cpu0 device\n");
- ret = -ENODEV;
- goto out_put_node;
- }
-
+ cpu_dev = &pdev->dev;
cpu_dev->of_node = np;
- cpu_clk = clk_get(cpu_dev, NULL);
+ cpu_clk = devm_clk_get(cpu_dev, NULL);
if (IS_ERR(cpu_clk)) {
ret = PTR_ERR(cpu_clk);
pr_err("failed to get cpu0 clock: %d\n", ret);
goto out_put_node;
}
- cpu_reg = regulator_get(cpu_dev, "cpu0");
+ cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
if (IS_ERR(cpu_reg)) {
pr_warn("failed to get cpu0 regulator\n");
cpu_reg = NULL;
@@ -267,7 +264,24 @@ out_put_node:
of_node_put(np);
return ret;
}
-late_initcall(cpu0_cpufreq_driver_init);
+
+static int cpu0_cpufreq_remove(struct platform_device *pdev)
+{
+ cpufreq_unregister_driver(&cpu0_cpufreq_driver);
+ opp_free_cpufreq_table(cpu_dev, &freq_table);
+
+ return 0;
+}
+
+static struct platform_driver cpu0_cpufreq_platdrv = {
+ .driver = {
+ .name = "cpufreq-cpu0",
+ .owner = THIS_MODULE,
+ },
+ .probe = cpu0_cpufreq_probe,
+ .remove = cpu0_cpufreq_remove,
+};
+module_platform_driver(cpu0_cpufreq_platdrv);
MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
MODULE_DESCRIPTION("Generic CPU0 cpufreq driver");
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