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>
84 	drv->versions = 1 << *speedbin;  in qcom_cpufreq_simple_get_version()
90 					  int *speed, int *pvs,  in get_krait_bin_format_a()  argument
97 	*speed = pte_efuse & 0xf;  in get_krait_bin_format_a()
98 	if (*speed == 0xf)  in get_krait_bin_format_a()
99 		*speed = (pte_efuse >> 4) & 0xf;  in get_krait_bin_format_a()
101 	if (*speed == 0xf) {  in get_krait_bin_format_a()
102 		*speed = 0;  in get_krait_bin_format_a()
103 		dev_warn(cpu_dev, "Speed bin: Defaulting to %d\n", *speed);  in get_krait_bin_format_a()
105 		dev_dbg(cpu_dev, "Speed bin: %d\n", *speed);  in get_krait_bin_format_a()
114 		dev_warn(cpu_dev, "PVS bin: Defaulting to %d\n", *pvs);  in get_krait_bin_format_a()
116 		dev_dbg(cpu_dev, "PVS bin: %d\n", *pvs);  in get_krait_bin_format_a()
121 					  int *speed, int *pvs, int *pvs_ver,  in get_krait_bin_format_b()  argument
134 		*speed = (pte_efuse >> 27) & 0xf;  in get_krait_bin_format_b()
138 		*speed = pte_efuse & 0x7;  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()
143 		*speed = pte_efuse & 0x7;  in get_krait_bin_format_b()
148 		dev_dbg(cpu_dev, "Speed bin: %d\n", *speed);  in get_krait_bin_format_b()
150 		dev_warn(cpu_dev, "Speed bin not set. Defaulting to 0!\n");  in get_krait_bin_format_b()
151 		*speed = 0;  in get_krait_bin_format_b()
158 		dev_dbg(cpu_dev, "PVS bin: %d\n", *pvs);  in get_krait_bin_format_b()
160 		dev_warn(cpu_dev, "PVS bin not set. Defaulting to 0!\n");  in get_krait_bin_format_b()
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()
220 	int speed = 0, pvs = 0, pvs_ver = 0;  in qcom_cpufreq_krait_name_version()  local
232 		get_krait_bin_format_a(cpu_dev, &speed, &pvs, speedbin);  in qcom_cpufreq_krait_name_version()
235 		get_krait_bin_format_b(cpu_dev, &speed, &pvs, &pvs_ver,  in qcom_cpufreq_krait_name_version()
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()
245 		 speed, pvs, pvs_ver);  in qcom_cpufreq_krait_name_version()
247 	drv->versions = (1 << speed);  in qcom_cpufreq_krait_name_version()
259 	int speed = 0, pvs = 0;  in qcom_cpufreq_ipq8064_name_version()  local
270 		ret = -ENODEV;  in qcom_cpufreq_ipq8064_name_version()
274 	get_krait_bin_format_a(cpu_dev, &speed, &pvs, speedbin);  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()
301 	/* IPQ8064 speed is never fused. Only pvs values are fused. */  in qcom_cpufreq_ipq8064_name_version()
302 	snprintf(*pvs_name, sizeof("speed0-pvsXX"), "speed0-pvs%d", pvs);  in qcom_cpufreq_ipq8064_name_version()
333 		 * ---------------------------------  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()
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()
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()
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()
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()
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()
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()
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()
574 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_probe()
588 		dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);  in qcom_cpufreq_remove()
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()