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cpufreq: rockchip: dump current opp state when panic for cpu

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panic log:
cpu cpu6: cur_freq: 1008000000 Hz, volt_vdd: 675000 uV, volt_mem: 675000 uV
cpu cpu4: cur_freq: 408000000 Hz, volt_vdd: 675000 uV, volt_mem: 675000 uV
cpu cpu0: cur_freq: 816000000 Hz, volt_vdd: 675000 uV, volt_mem: 675000 uV

Change-Id: I7d58b8b287d002db21a68448c65d14a2bd44f063
Signed-off-by: Liang Chen <cl@rock-chips.com>
This commit is contained in:
Liang Chen
2022-12-21 14:42:34 +08:00
committed by Tao Huang
parent 0140962993
commit 2f39a52b83
1 changed files with 51 additions and 0 deletions
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51
drivers/cpufreq/rockchip-cpufreq.c
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@@ -48,6 +48,9 @@ struct cluster_info {
int scale;
bool is_idle_disabled;
bool is_opp_shared_dsu;
unsigned int regulator_count;
unsigned long rate;
unsigned long volt, mem_volt;
};
static LIST_HEAD(cluster_info_list);
@@ -515,6 +518,9 @@ static int cpu_opp_helper(struct dev_pm_set_opp_data *data)
goto restore_freq;
}
cluster->volt = new_supply_vdd->u_volt;
cluster->mem_volt = new_supply_mem->u_volt;
return 0;
restore_freq:
@@ -607,6 +613,7 @@ static int rockchip_cpufreq_cluster_init(int cpu, struct cluster_info *cluster)
if (of_find_property(dev->of_node, "cpu-supply", NULL) &&
of_find_property(dev->of_node, "mem-supply", NULL)) {
cluster->regulator_count = 2;
reg_table = dev_pm_opp_set_regulators(dev, reg_names,
ARRAY_SIZE(reg_names));
if (IS_ERR(reg_table)) {
@@ -619,6 +626,8 @@ static int rockchip_cpufreq_cluster_init(int cpu, struct cluster_info *cluster)
ret = PTR_ERR(opp_table);
goto reg_opp_table;
}
} else {
cluster->regulator_count = 1;
}
of_node_put(np);
@@ -654,6 +663,8 @@ EXPORT_SYMBOL_GPL(rockchip_cpufreq_adjust_power_scale);
int rockchip_cpufreq_opp_set_rate(struct device *dev, unsigned long target_freq)
{
struct cluster_info *cluster;
struct dev_pm_opp *opp;
unsigned long freq;
int ret = 0;
cluster = rockchip_cluster_info_lookup(dev->id);
@@ -662,6 +673,17 @@ int rockchip_cpufreq_opp_set_rate(struct device *dev, unsigned long target_freq)
rockchip_monitor_volt_adjust_lock(cluster->mdev_info);
ret = dev_pm_opp_set_rate(dev, target_freq);
if (!ret) {
cluster->rate = target_freq;
if (cluster->regulator_count == 1) {
freq = target_freq;
opp = dev_pm_opp_find_freq_ceil(cluster->opp_info.dev, &freq);
if (!IS_ERR(opp)) {
cluster->volt = dev_pm_opp_get_voltage(opp);
dev_pm_opp_put(opp);
}
}
}
rockchip_monitor_volt_adjust_unlock(cluster->mdev_info);
return ret;
@@ -903,6 +925,30 @@ static struct notifier_block rockchip_cpufreq_transition_notifier_block = {
.notifier_call = rockchip_cpufreq_transition_notifier,
};
static int rockchip_cpufreq_panic_notifier(struct notifier_block *nb,
unsigned long v, void *p)
{
struct cluster_info *ci;
struct device *dev;
list_for_each_entry(ci, &cluster_info_list, list_head) {
dev = ci->opp_info.dev;
if (ci->regulator_count == 1)
dev_info(dev, "cur_freq: %lu Hz, volt: %lu uV\n",
ci->rate, ci->volt);
else
dev_info(dev, "cur_freq: %lu Hz, volt_vdd: %lu uV, volt_mem: %lu uV\n",
ci->rate, ci->volt, ci->mem_volt);
}
return 0;
}
static struct notifier_block rockchip_cpufreq_panic_notifier_block = {
.notifier_call = rockchip_cpufreq_panic_notifier,
};
static int __init rockchip_cpufreq_driver_init(void)
{
struct cluster_info *cluster, *pos;
@@ -952,6 +998,11 @@ static int __init rockchip_cpufreq_driver_init(void)
#endif
}
ret = atomic_notifier_chain_register(&panic_notifier_list,
&rockchip_cpufreq_panic_notifier_block);
if (ret)
pr_err("failed to register cpufreq panic notifier\n");
return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt",
-1, (void *)&pdata,
sizeof(struct cpufreq_dt_platform_data)));