1 // SPDX-License-Identifier: GPL-2.0
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.
23 #include <linux/nvmem-consumer.h>
33 #include <dt-bindings/arm/qcom,ids.h>
54 			   struct qcom_cpufreq_drv *drv);
74 					   struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_simple_get_version()  argument
84 	drv->versions = 1 << *speedbin;  in qcom_cpufreq_simple_get_version()
132 	case 1:  in get_krait_bin_format_b()
141 		/* 4 bits of PVS are in efuse register bits 31, 8-6. */  in get_krait_bin_format_b()
155 	pte_efuse = *(((u32 *)buf) + 1);  in get_krait_bin_format_b()
170 					  struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_kryo_name_version()  argument
200 		drv->versions = 1 << (unsigned int)(*speedbin);  in qcom_cpufreq_kryo_name_version()
204 		drv->versions = 1 << ((unsigned int)(*speedbin) + 4);  in qcom_cpufreq_kryo_name_version()
218 					   struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_krait_name_version()  argument
240 		ret = -ENODEV;  in qcom_cpufreq_krait_name_version()
244 	snprintf(*pvs_name, sizeof("speedXX-pvsXX-vXX"), "speed%d-pvs%d-v%d",  in qcom_cpufreq_krait_name_version()
247 	drv->versions = (1 << speed);  in qcom_cpufreq_krait_name_version()
257 					     struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_ipq8064_name_version()  argument
270 		ret = -ENODEV;  in qcom_cpufreq_ipq8064_name_version()
282 		drv->versions = BIT(IPQ8062_VERSION);  in qcom_cpufreq_ipq8064_name_version()
287 		drv->versions = BIT(IPQ8064_VERSION);  in qcom_cpufreq_ipq8064_name_version()
291 		drv->versions = BIT(IPQ8065_VERSION);  in qcom_cpufreq_ipq8064_name_version()
297 		drv->versions = BIT(IPQ8062_VERSION);  in qcom_cpufreq_ipq8064_name_version()
302 	snprintf(*pvs_name, sizeof("speed0-pvsXX"), "speed0-pvs%d", pvs);  in qcom_cpufreq_ipq8064_name_version()
312 					     struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_ipq6018_name_version()  argument
333 		 * ---------------------------------  in qcom_cpufreq_ipq6018_name_version()
335 		 *   2’b1     1.5 GHz      BIT(1)  in qcom_cpufreq_ipq6018_name_version()
337 		drv->versions = 1 << (unsigned int)(*speedbin);  in qcom_cpufreq_ipq6018_name_version()
342 		 * speed-bin, but that is not enough for IPQ6000 which  in qcom_cpufreq_ipq6018_name_version()
346 		drv->versions = IPQ6000_VERSION;  in qcom_cpufreq_ipq6018_name_version()
352 		drv->versions = IPQ6000_VERSION;  in qcom_cpufreq_ipq6018_name_version()
363 					     struct qcom_cpufreq_drv *drv)  in qcom_cpufreq_ipq8074_name_version()  argument
379 		drv->versions = BIT(IPQ8074_ACORN_VERSION);  in qcom_cpufreq_ipq8074_name_version()
385 		drv->versions = BIT(IPQ8074_HAWKEYE_VERSION);  in qcom_cpufreq_ipq8074_name_version()
391 		drv->versions = BIT(IPQ8074_ACORN_VERSION);  in qcom_cpufreq_ipq8074_name_version()
431 static void qcom_cpufreq_suspend_virt_devs(struct qcom_cpufreq_drv *drv, unsigned int cpu)  in qcom_cpufreq_suspend_virt_devs()  argument
433 	const char * const *name = drv->data->genpd_names;  in qcom_cpufreq_suspend_virt_devs()
436 	if (!drv->cpus[cpu].virt_devs)  in qcom_cpufreq_suspend_virt_devs()
440 		device_set_awake_path(drv->cpus[cpu].virt_devs[i]);  in qcom_cpufreq_suspend_virt_devs()
443 static void qcom_cpufreq_put_virt_devs(struct qcom_cpufreq_drv *drv, unsigned int cpu)  in qcom_cpufreq_put_virt_devs()  argument
445 	const char * const *name = drv->data->genpd_names;  in qcom_cpufreq_put_virt_devs()
448 	if (!drv->cpus[cpu].virt_devs)  in qcom_cpufreq_put_virt_devs()
452 		pm_runtime_put(drv->cpus[cpu].virt_devs[i]);  in qcom_cpufreq_put_virt_devs()
457 	struct qcom_cpufreq_drv *drv;  in qcom_cpufreq_probe()  local
460 	char pvs_name_buffer[] = "speedXX-pvsXX-vXX";  in qcom_cpufreq_probe()
468 		return -ENODEV;  in qcom_cpufreq_probe()
473 		return -ENOENT;  in qcom_cpufreq_probe()
475 	ret = of_device_is_compatible(np, "operating-points-v2-kryo-cpu") ||  in qcom_cpufreq_probe()
476 	      of_device_is_compatible(np, "operating-points-v2-krait-cpu");  in qcom_cpufreq_probe()
478 		return -ENOENT;  in qcom_cpufreq_probe()
480 	drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()),  in qcom_cpufreq_probe()
482 	if (!drv)  in qcom_cpufreq_probe()
483 		return -ENOMEM;  in qcom_cpufreq_probe()
485 	match = pdev->dev.platform_data;  in qcom_cpufreq_probe()
486 	drv->data = match->data;  in qcom_cpufreq_probe()
487 	if (!drv->data)  in qcom_cpufreq_probe()
488 		return -ENODEV;  in qcom_cpufreq_probe()
490 	if (drv->data->get_version) {  in qcom_cpufreq_probe()
496 		ret = drv->data->get_version(cpu_dev,  in qcom_cpufreq_probe()
497 							speedbin_nvmem, &pvs_name, drv);  in qcom_cpufreq_probe()
513 			ret = -ENODEV;  in qcom_cpufreq_probe()
517 		if (drv->data->get_version) {  in qcom_cpufreq_probe()
518 			config.supported_hw = &drv->versions;  in qcom_cpufreq_probe()
519 			config.supported_hw_count = 1;  in qcom_cpufreq_probe()
525 		if (drv->data->genpd_names) {  in qcom_cpufreq_probe()
526 			config.genpd_names = drv->data->genpd_names;  in qcom_cpufreq_probe()
531 			drv->cpus[cpu].opp_token = dev_pm_opp_set_config(cpu_dev, &config);  in qcom_cpufreq_probe()
532 			if (drv->cpus[cpu].opp_token < 0) {  in qcom_cpufreq_probe()
533 				ret = drv->cpus[cpu].opp_token;  in qcom_cpufreq_probe()
557 			drv->cpus[cpu].virt_devs = virt_devs;  in qcom_cpufreq_probe()
561 	cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,  in qcom_cpufreq_probe()
564 		platform_set_drvdata(pdev, drv);  in qcom_cpufreq_probe()
573 		qcom_cpufreq_put_virt_devs(drv, cpu);  in qcom_cpufreq_probe()
574 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_probe()
581 	struct qcom_cpufreq_drv *drv = platform_get_drvdata(pdev);  in qcom_cpufreq_remove()  local
587 		qcom_cpufreq_put_virt_devs(drv, cpu);  in qcom_cpufreq_remove()
588 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_remove()
594 	struct qcom_cpufreq_drv *drv = dev_get_drvdata(dev);  in qcom_cpufreq_suspend()  local
598 		qcom_cpufreq_suspend_virt_devs(drv, cpu);  in qcom_cpufreq_suspend()
609 		.name = "qcom-cpufreq-nvmem",
644 		return -ENODEV;  in qcom_cpufreq_init()
648 		return -ENODEV;  in qcom_cpufreq_init()
654 	cpufreq_pdev = platform_device_register_data(NULL, "qcom-cpufreq-nvmem",  in qcom_cpufreq_init()
655 						     -1, match, sizeof(*match));  in qcom_cpufreq_init()