cpufreq/arm updates for 6.1-rc1

- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski).
 - Add support for Tegra239 and minor cleanups (Sumit Gupta, ye xingchen,
   and Yang Yingliang).
 - Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen Yan,
   and Viresh Kumar).
 - Minor cleanups around functions called at module_init() (Xiu Jianfeng).
 - Use module_init and add module_exit for bmips driver (Zhang Jianhua).
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Merge tag 'cpufreq-arm-updates-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Pull cpufreq/arm updates for 6.1-rc1 from Viresh Kumar:

"- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski).
 - Add support for Tegra239 and minor cleanups (Sumit Gupta, ye xingchen,
   and Yang Yingliang).
 - Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen Yan,
   and Viresh Kumar).
 - Minor cleanups around functions called at module_init() (Xiu Jianfeng).
 - Use module_init and add module_exit for bmips driver (Zhang
   Jianhua)."

* tag 'cpufreq-arm-updates-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh
  cpufreq: Add __init annotation to module init funcs
  cpufreq: tegra194: change tegra239_cpufreq_soc to static
  cpufreq: tegra194: Add support for Tegra239
  cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled_freq warning
  cpufreq: tegra194: Remove the unneeded result variable
  cpufreq: bmips-cpufreq: Use module_init and add module_exit
  cpufreq: Add SM6115 to cpufreq-dt-platdev blocklist

drivers/cpufreq/bmips-cpufreq.c

@@ -156,7 +156,7 @@ static struct cpufreq_driver bmips_cpufreq_driver = {
 	.name		= BMIPS_CPUFREQ_PREFIX,
 };
 
-static int __init bmips_cpufreq_probe(void)
+static int __init bmips_cpufreq_driver_init(void)
 {
 	struct cpufreq_compat *cc;
 	struct device_node *np;
@@ -176,7 +176,13 @@ static int __init bmips_cpufreq_probe(void)
 
 	return cpufreq_register_driver(&bmips_cpufreq_driver);
 }
-device_initcall(bmips_cpufreq_probe);
+module_init(bmips_cpufreq_driver_init);
+
+static void __exit bmips_cpufreq_driver_exit(void)
+{
+	cpufreq_unregister_driver(&bmips_cpufreq_driver);
+}
+module_exit(bmips_cpufreq_driver_exit);
 
 MODULE_AUTHOR("Markus Mayer <mmayer@broadcom.com>");
 MODULE_DESCRIPTION("CPUfreq driver for Broadcom BMIPS SoCs");

drivers/cpufreq/cpufreq-dt-platdev.c

@@ -146,6 +146,7 @@ static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "qcom,sc8180x", },
 	{ .compatible = "qcom,sc8280xp", },
 	{ .compatible = "qcom,sdm845", },
+	{ .compatible = "qcom,sm6115", },
 	{ .compatible = "qcom,sm6350", },
 	{ .compatible = "qcom,sm8150", },
 	{ .compatible = "qcom,sm8250", },

drivers/cpufreq/highbank-cpufreq.c

@@ -55,7 +55,7 @@ static struct notifier_block hb_cpufreq_clk_nb = {
 	.notifier_call = hb_cpufreq_clk_notify,
 };
 
-static int hb_cpufreq_driver_init(void)
+static int __init hb_cpufreq_driver_init(void)
 {
 	struct platform_device_info devinfo = { .name = "cpufreq-dt", };
 	struct device *cpu_dev;

drivers/cpufreq/qcom-cpufreq-hw.c

@@ -13,6 +13,7 @@
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/pm_opp.h>
+#include <linux/pm_qos.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/units.h>
@@ -56,6 +57,8 @@ struct qcom_cpufreq_data {
 	struct cpufreq_policy *policy;
 
 	bool per_core_dcvs;
+
+	struct freq_qos_request throttle_freq_req;
 };
 
 static unsigned long cpu_hw_rate, xo_rate;
@@ -316,14 +319,16 @@ static void qcom_lmh_dcvs_notify(struct qcom_cpufreq_data *data)
 	if (IS_ERR(opp)) {
 		dev_warn(dev, "Can't find the OPP for throttling: %pe!\n", opp);
 	} else {
-		throttled_freq = freq_hz / HZ_PER_KHZ;
-
-		/* Update thermal pressure (the boost frequencies are accepted) */
-		arch_update_thermal_pressure(policy->related_cpus, throttled_freq);
-
 		dev_pm_opp_put(opp);
 	}
 
+	throttled_freq = freq_hz / HZ_PER_KHZ;
+
+	freq_qos_update_request(&data->throttle_freq_req, throttled_freq);
+
+	/* Update thermal pressure (the boost frequencies are accepted) */
+	arch_update_thermal_pressure(policy->related_cpus, throttled_freq);
+
 	/*
 	 * In the unlikely case policy is unregistered do not enable
 	 * polling or h/w interrupt
@@ -413,6 +418,14 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
 	if (data->throttle_irq < 0)
 		return data->throttle_irq;
 
+	ret = freq_qos_add_request(&policy->constraints,
+				   &data->throttle_freq_req, FREQ_QOS_MAX,
+				   FREQ_QOS_MAX_DEFAULT_VALUE);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to add freq constraint (%d)\n", ret);
+		return ret;
+	}
+
 	data->cancel_throttle = false;
 	data->policy = policy;
 
@@ -479,6 +492,7 @@ static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data)
 	if (data->throttle_irq <= 0)
 		return;
 
+	freq_qos_remove_request(&data->throttle_freq_req);
 	free_irq(data->throttle_irq, data);
 }
 

drivers/cpufreq/sti-cpufreq.c

@@ -252,7 +252,7 @@ static int sti_cpufreq_fetch_syscon_registers(void)
 	return 0;
 }
 
-static int sti_cpufreq_init(void)
+static int __init sti_cpufreq_init(void)
 {
 	int ret;
 

drivers/cpufreq/tegra194-cpufreq.c

@@ -38,14 +38,6 @@
 /* cpufreq transisition latency */
 #define TEGRA_CPUFREQ_TRANSITION_LATENCY (300 * 1000) /* unit in nanoseconds */
 
-enum cluster {
-	CLUSTER0,
-	CLUSTER1,
-	CLUSTER2,
-	CLUSTER3,
-	MAX_CLUSTERS,
-};
-
 struct tegra_cpu_ctr {
 	u32 cpu;
 	u32 coreclk_cnt, last_coreclk_cnt;
@@ -67,12 +59,12 @@ struct tegra_cpufreq_ops {
 struct tegra_cpufreq_soc {
 	struct tegra_cpufreq_ops *ops;
 	int maxcpus_per_cluster;
+	unsigned int num_clusters;
 	phys_addr_t actmon_cntr_base;
 };
 
 struct tegra194_cpufreq_data {
 	void __iomem *regs;
-	size_t num_clusters;
 	struct cpufreq_frequency_table **tables;
 	const struct tegra_cpufreq_soc *soc;
 };
@@ -166,6 +158,14 @@ static const struct tegra_cpufreq_soc tegra234_cpufreq_soc = {
 	.ops = &tegra234_cpufreq_ops,
 	.actmon_cntr_base = 0x9000,
 	.maxcpus_per_cluster = 4,
+	.num_clusters = 3,
+};
+
+static const struct tegra_cpufreq_soc tegra239_cpufreq_soc = {
+	.ops = &tegra234_cpufreq_ops,
+	.actmon_cntr_base = 0x4000,
+	.maxcpus_per_cluster = 8,
+	.num_clusters = 1,
 };
 
 static void tegra194_get_cpu_cluster_id(u32 cpu, u32 *cpuid, u32 *clusterid)
@@ -314,11 +314,7 @@ static void tegra194_get_cpu_ndiv_sysreg(void *ndiv)
 
 static int tegra194_get_cpu_ndiv(u32 cpu, u32 cpuid, u32 clusterid, u64 *ndiv)
 {
-	int ret;
-
-	ret = smp_call_function_single(cpu, tegra194_get_cpu_ndiv_sysreg, &ndiv, true);
-
-	return ret;
+	return smp_call_function_single(cpu, tegra194_get_cpu_ndiv_sysreg, &ndiv, true);
 }
 
 static void tegra194_set_cpu_ndiv_sysreg(void *data)
@@ -382,7 +378,7 @@ static int tegra194_cpufreq_init(struct cpufreq_policy *policy)
 
 	data->soc->ops->get_cpu_cluster_id(policy->cpu, NULL, &clusterid);
 
-	if (clusterid >= data->num_clusters || !data->tables[clusterid])
+	if (clusterid >= data->soc->num_clusters || !data->tables[clusterid])
 		return -EINVAL;
 
 	start_cpu = rounddown(policy->cpu, maxcpus_per_cluster);
@@ -433,6 +429,7 @@ static struct tegra_cpufreq_ops tegra194_cpufreq_ops = {
 static const struct tegra_cpufreq_soc tegra194_cpufreq_soc = {
 	.ops = &tegra194_cpufreq_ops,
 	.maxcpus_per_cluster = 2,
+	.num_clusters = 4,
 };
 
 static void tegra194_cpufreq_free_resources(void)
@@ -525,15 +522,14 @@ static int tegra194_cpufreq_probe(struct platform_device *pdev)
 
 	soc = of_device_get_match_data(&pdev->dev);
 
-	if (soc->ops && soc->maxcpus_per_cluster) {
+	if (soc->ops && soc->maxcpus_per_cluster && soc->num_clusters) {
 		data->soc = soc;
 	} else {
 		dev_err(&pdev->dev, "soc data missing\n");
 		return -EINVAL;
 	}
 
-	data->num_clusters = MAX_CLUSTERS;
-	data->tables = devm_kcalloc(&pdev->dev, data->num_clusters,
+	data->tables = devm_kcalloc(&pdev->dev, data->soc->num_clusters,
 				    sizeof(*data->tables), GFP_KERNEL);
 	if (!data->tables)
 		return -ENOMEM;
@@ -558,7 +554,7 @@ static int tegra194_cpufreq_probe(struct platform_device *pdev)
 		goto put_bpmp;
 	}
 
-	for (i = 0; i < data->num_clusters; i++) {
+	for (i = 0; i < data->soc->num_clusters; i++) {
 		data->tables[i] = init_freq_table(pdev, bpmp, i);
 		if (IS_ERR(data->tables[i])) {
 			err = PTR_ERR(data->tables[i]);
@@ -590,6 +586,7 @@ static int tegra194_cpufreq_remove(struct platform_device *pdev)
 static const struct of_device_id tegra194_cpufreq_of_match[] = {
 	{ .compatible = "nvidia,tegra194-ccplex", .data = &tegra194_cpufreq_soc },
 	{ .compatible = "nvidia,tegra234-ccplex-cluster", .data = &tegra234_cpufreq_soc },
+	{ .compatible = "nvidia,tegra239-ccplex-cluster", .data = &tegra239_cpufreq_soc },
 	{ /* sentinel */ }
 };
 

drivers/cpufreq/ti-cpufreq.c

@@ -398,7 +398,7 @@ fail_put_node:
 	return ret;
 }
 
-static int ti_cpufreq_init(void)
+static int __init ti_cpufreq_init(void)
 {
 	const struct of_device_id *match;