1 // SPDX-License-Identifier: GPL-2.0
8  * the CPU frequency subset and voltage value of each OPP varies
10  * defines the voltage and frequency value based on the msm-id in SMEM
12  * The qcom-cpufreq-nvmem driver reads the msm-id and efuse value from the SoC
15  * operating-points-v2 table when it is parsed by the OPP framework.
18 #include <linux/cpu.h>
23 #include <linux/nvmem-consumer.h>
33 #include <dt-bindings/arm/qcom,ids.h>
85 	drv->versions = 1 << *speedbin;  in qcom_cpufreq_simple_get_version()
142 		/* 4 bits of PVS are in efuse register bits 31, 8-6. */  in get_krait_bin_format_b()
201 		drv->versions = 1 << (unsigned int)(*speedbin);  in qcom_cpufreq_kryo_name_version()
205 		drv->versions = 1 << ((unsigned int)(*speedbin) + 4);  in qcom_cpufreq_kryo_name_version()
241 		ret = -ENODEV;  in qcom_cpufreq_krait_name_version()
245 	snprintf(*pvs_name, sizeof("speedXX-pvsXX-vXX"), "speed%d-pvs%d-v%d",  in qcom_cpufreq_krait_name_version()
248 	drv->versions = (1 << speed);  in qcom_cpufreq_krait_name_version()
271 		ret = -ENODEV;  in qcom_cpufreq_ipq8064_name_version()
283 		drv->versions = BIT(IPQ8062_VERSION);  in qcom_cpufreq_ipq8064_name_version()
288 		drv->versions = BIT(IPQ8064_VERSION);  in qcom_cpufreq_ipq8064_name_version()
292 		drv->versions = BIT(IPQ8065_VERSION);  in qcom_cpufreq_ipq8064_name_version()
298 		drv->versions = BIT(IPQ8062_VERSION);  in qcom_cpufreq_ipq8064_name_version()
303 	snprintf(*pvs_name, sizeof("speed0-pvsXX"), "speed0-pvs%d", pvs);  in qcom_cpufreq_ipq8064_name_version()
334 		 * ---------------------------------  in qcom_cpufreq_ipq6018_name_version()
338 		drv->versions = 1 << (unsigned int)(*speedbin);  in qcom_cpufreq_ipq6018_name_version()
342 		 * IPQ6018 family only has one bit to advertise the CPU  in qcom_cpufreq_ipq6018_name_version()
343 		 * speed-bin, but that is not enough for IPQ6000 which  in qcom_cpufreq_ipq6018_name_version()
347 		drv->versions = IPQ6000_VERSION;  in qcom_cpufreq_ipq6018_name_version()
353 		drv->versions = IPQ6000_VERSION;  in qcom_cpufreq_ipq6018_name_version()
380 		drv->versions = BIT(IPQ8074_ACORN_VERSION);  in qcom_cpufreq_ipq8074_name_version()
386 		drv->versions = BIT(IPQ8074_HAWKEYE_VERSION);  in qcom_cpufreq_ipq8074_name_version()
392 		drv->versions = BIT(IPQ8074_ACORN_VERSION);  in qcom_cpufreq_ipq8074_name_version()
430 static void qcom_cpufreq_suspend_pd_devs(struct qcom_cpufreq_drv *drv, unsigned int cpu)  in qcom_cpufreq_suspend_pd_devs()  argument
432 	struct dev_pm_domain_list *pd_list = drv->cpus[cpu].pd_list;  in qcom_cpufreq_suspend_pd_devs()
438 	for (i = 0; i < pd_list->num_pds; i++)  in qcom_cpufreq_suspend_pd_devs()
439 		device_set_awake_path(pd_list->pd_devs[i]);  in qcom_cpufreq_suspend_pd_devs()
447 	char pvs_name_buffer[] = "speedXX-pvsXX-vXX";  in qcom_cpufreq_probe()
449 	unsigned cpu;  in qcom_cpufreq_probe()  local
455 		return -ENODEV;  in qcom_cpufreq_probe()
460 		return -ENOENT;  in qcom_cpufreq_probe()
462 	ret = of_device_is_compatible(np, "operating-points-v2-kryo-cpu") ||  in qcom_cpufreq_probe()
463 	      of_device_is_compatible(np, "operating-points-v2-krait-cpu");  in qcom_cpufreq_probe()
465 		return -ENOENT;  in qcom_cpufreq_probe()
467 	drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()),  in qcom_cpufreq_probe()
470 		return -ENOMEM;  in qcom_cpufreq_probe()
472 	match = pdev->dev.platform_data;  in qcom_cpufreq_probe()
473 	drv->data = match->data;  in qcom_cpufreq_probe()
474 	if (!drv->data)  in qcom_cpufreq_probe()
475 		return -ENODEV;  in qcom_cpufreq_probe()
477 	if (drv->data->get_version) {  in qcom_cpufreq_probe()
483 		ret = drv->data->get_version(cpu_dev,  in qcom_cpufreq_probe()
492 	for_each_present_cpu(cpu) {  in qcom_cpufreq_probe()
497 		cpu_dev = get_cpu_device(cpu);  in qcom_cpufreq_probe()
499 			ret = -ENODEV;  in qcom_cpufreq_probe()
503 		if (drv->data->get_version) {  in qcom_cpufreq_probe()
504 			config.supported_hw = &drv->versions;  in qcom_cpufreq_probe()
512 			drv->cpus[cpu].opp_token = dev_pm_opp_set_config(cpu_dev, &config);  in qcom_cpufreq_probe()
513 			if (drv->cpus[cpu].opp_token < 0) {  in qcom_cpufreq_probe()
514 				ret = drv->cpus[cpu].opp_token;  in qcom_cpufreq_probe()
520 		if (drv->data->pd_names) {  in qcom_cpufreq_probe()
522 				.pd_names = drv->data->pd_names,  in qcom_cpufreq_probe()
523 				.num_pd_names = drv->data->num_pd_names,  in qcom_cpufreq_probe()
529 							&drv->cpus[cpu].pd_list);  in qcom_cpufreq_probe()
535 	cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,  in qcom_cpufreq_probe()
546 	for_each_present_cpu(cpu) {  in qcom_cpufreq_probe()
547 		dev_pm_domain_detach_list(drv->cpus[cpu].pd_list);  in qcom_cpufreq_probe()
548 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_probe()
556 	unsigned int cpu;  in qcom_cpufreq_remove()  local
560 	for_each_present_cpu(cpu) {  in qcom_cpufreq_remove()
561 		dev_pm_domain_detach_list(drv->cpus[cpu].pd_list);  in qcom_cpufreq_remove()
562 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_remove()
569 	unsigned int cpu;  in qcom_cpufreq_suspend()  local
571 	for_each_present_cpu(cpu)  in qcom_cpufreq_suspend()
572 		qcom_cpufreq_suspend_pd_devs(drv, cpu);  in qcom_cpufreq_suspend()
583 		.name = "qcom-cpufreq-nvmem",
618 		return -ENODEV;  in qcom_cpufreq_init()
622 		return -ENODEV;  in qcom_cpufreq_init()
628 	cpufreq_pdev = platform_device_register_data(NULL, "qcom-cpufreq-nvmem",  in qcom_cpufreq_init()
629 						     -1, match, sizeof(*match));  in qcom_cpufreq_init()
647 MODULE_LICENSE("GPL v2");