static void bL_cpufreq_ready(struct cpufreq_policy *policy)
{
int cur_cluster = cpu_to_cluster(policy->cpu);
/* Do not register a cpu_cooling device if we are in IKS mode */
if (cur_cluster >= MAX_CLUSTERS)
return;
cdev[cur_cluster] = of_cpufreq_cooling_register(policy);
}
static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
{
struct mtk_cpu_dvfs_info *info = policy->driver_data;
struct device_node *np = of_node_get(info->cpu_dev->of_node);
if (WARN_ON(!np))
return;
if (of_find_property(np, "#cooling-cells", NULL)) {
info->cdev = of_cpufreq_cooling_register(np,
policy->related_cpus);
if (IS_ERR(info->cdev)) {
dev_err(info->cpu_dev,
"running cpufreq without cooling device: %ld\n",
PTR_ERR(info->cdev));
info->cdev = NULL;
}
}
of_node_put(np);
}
static int exynos_cpufreq_probe(struct platform_device *pdev)
{
struct device_node *cpu0;
int ret = -EINVAL;
exynos_info = kzalloc(sizeof(*exynos_info), GFP_KERNEL);
if (!exynos_info)
return -ENOMEM;
exynos_info->dev = &pdev->dev;
if (of_machine_is_compatible("samsung,exynos4212")) {
exynos_info->type = EXYNOS_SOC_4212;
ret = exynos4x12_cpufreq_init(exynos_info);
} else if (of_machine_is_compatible("samsung,exynos4412")) {
exynos_info->type = EXYNOS_SOC_4412;
ret = exynos4x12_cpufreq_init(exynos_info);
} else if (of_machine_is_compatible("samsung,exynos5250")) {
exynos_info->type = EXYNOS_SOC_5250;
ret = exynos5250_cpufreq_init(exynos_info);
} else {
pr_err("%s: Unknown SoC type\n", __func__);
return -ENODEV;
}
if (ret)
goto err_vdd_arm;
if (exynos_info->set_freq == NULL) {
dev_err(&pdev->dev, "No set_freq function (ERR)\n");
goto err_vdd_arm;
}
arm_regulator = regulator_get(NULL, "vdd_arm");
if (IS_ERR(arm_regulator)) {
dev_err(&pdev->dev, "failed to get resource vdd_arm\n");
goto err_vdd_arm;
}
/* Done here as we want to capture boot frequency */
locking_frequency = clk_get_rate(exynos_info->cpu_clk) / 1000;
ret = cpufreq_register_driver(&exynos_driver);
if (ret)
goto err_cpufreq_reg;
cpu0 = of_get_cpu_node(0, NULL);
if (!cpu0) {
pr_err("failed to find cpu0 node\n");
return 0;
}
if (of_find_property(cpu0, "#cooling-cells", NULL)) {
cdev = of_cpufreq_cooling_register(cpu0,
cpu_present_mask);
if (IS_ERR(cdev))
pr_err("running cpufreq without cooling device: %ld\n",
PTR_ERR(cdev));
}
return 0;
err_cpufreq_reg:
dev_err(&pdev->dev, "failed to register cpufreq driver\n");
regulator_put(arm_regulator);
err_vdd_arm:
kfree(exynos_info);
return -EINVAL;
}
static int cpufreq_init(struct cpufreq_policy *policy)
{
struct cpufreq_dt_platform_data *pd;
struct cpufreq_frequency_table *freq_table;
struct thermal_cooling_device *cdev;
struct device_node *np;
struct private_data *priv;
struct device *cpu_dev;
struct regulator *cpu_reg;
struct clk *cpu_clk;
unsigned long min_uV = ~0, max_uV = 0;
unsigned int transition_latency;
int ret;
ret = allocate_resources(policy->cpu, &cpu_dev, &cpu_reg, &cpu_clk);
if (ret) {
pr_err("%s: Failed to allocate resources\n: %d", __func__, ret);
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;
}
/* OPPs might be populated at runtime, don't check for error here */
of_init_opp_table(cpu_dev);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
goto out_put_node;
}
of_property_read_u32(np, "voltage-tolerance", &priv->voltage_tolerance);
if (of_property_read_u32(np, "clock-latency", &transition_latency))
transition_latency = CPUFREQ_ETERNAL;
if (!IS_ERR(cpu_reg)) {
unsigned long opp_freq = 0;
/*
* Disable any OPPs where the connected regulator isn't able to
* provide the specified voltage and record minimum and maximum
* voltage levels.
*/
while (1) {
struct dev_pm_opp *opp;
unsigned long opp_uV, tol_uV;
rcu_read_lock();
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &opp_freq);
if (IS_ERR(opp)) {
rcu_read_unlock();
break;
}
opp_uV = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
tol_uV = opp_uV * priv->voltage_tolerance / 100;
if (regulator_is_supported_voltage(cpu_reg, opp_uV,
opp_uV + tol_uV)) {
if (opp_uV < min_uV)
min_uV = opp_uV;
if (opp_uV > max_uV)
max_uV = opp_uV;
} else {
dev_pm_opp_disable(cpu_dev, opp_freq);
}
opp_freq++;
}
ret = regulator_set_voltage_time(cpu_reg, min_uV, max_uV);
if (ret > 0)
transition_latency += ret * 1000;
}
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
pr_err("failed to init cpufreq table: %d\n", ret);
goto out_free_priv;
}
/*
* For now, just loading the cooling device;
* thermal DT code takes care of matching them.
*/
if (of_find_property(np, "#cooling-cells", NULL)) {
cdev = of_cpufreq_cooling_register(np, cpu_present_mask);
if (IS_ERR(cdev))
dev_err(cpu_dev,
"running cpufreq without cooling device: %ld\n",
PTR_ERR(cdev));
else
priv->cdev = cdev;
}
priv->cpu_dev = cpu_dev;
priv->cpu_reg = cpu_reg;
policy->driver_data = priv;
policy->clk = cpu_clk;
ret = cpufreq_table_validate_and_show(policy, freq_table);
if (ret) {
dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__,
ret);
goto out_cooling_unregister;
}
policy->cpuinfo.transition_latency = transition_latency;
pd = cpufreq_get_driver_data();
if (!pd || !pd->independent_clocks)
cpumask_setall(policy->cpus);
of_node_put(np);
return 0;
out_cooling_unregister:
cpufreq_cooling_unregister(priv->cdev);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
out_free_priv:
kfree(priv);
out_put_node:
of_node_put(np);
out_put_reg_clk:
clk_put(cpu_clk);
if (!IS_ERR(cpu_reg))
regulator_put(cpu_reg);
return ret;
}
static void scpi_cpufreq_ready(struct cpufreq_policy *policy)
{
struct scpi_data *priv = policy->driver_data;
priv->cdev = of_cpufreq_cooling_register(policy);
}
