mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-28 02:32:09 -04:00
Merge branch 'cpufreq/qcom-updates' into cpufreq/arm/linux-next
This commit is contained in:
Viresh Kumar
commit
f75d2accca
10 changed files with 566 additions and 272 deletions
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@ -132,8 +132,8 @@ config ARM_OMAP2PLUS_CPUFREQ
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depends on ARCH_OMAP2PLUS
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default ARCH_OMAP2PLUS
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config ARM_QCOM_CPUFREQ_KRYO
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tristate "Qualcomm Kryo based CPUFreq"
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config ARM_QCOM_CPUFREQ_NVMEM
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tristate "Qualcomm nvmem based CPUFreq"
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depends on ARM64
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depends on QCOM_QFPROM
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depends on QCOM_SMEM
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@ -64,7 +64,7 @@ obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o
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obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o
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obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o
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obj-$(CONFIG_ARM_QCOM_CPUFREQ_HW) += qcom-cpufreq-hw.o
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obj-$(CONFIG_ARM_QCOM_CPUFREQ_KRYO) += qcom-cpufreq-kryo.o
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obj-$(CONFIG_ARM_QCOM_CPUFREQ_NVMEM) += qcom-cpufreq-nvmem.o
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obj-$(CONFIG_ARM_RASPBERRYPI_CPUFREQ) += raspberrypi-cpufreq.o
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obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o
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obj-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o
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@ -127,6 +127,7 @@ static const struct of_device_id blacklist[] __initconst = {
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{ .compatible = "qcom,apq8096", },
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{ .compatible = "qcom,msm8996", },
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{ .compatible = "qcom,qcs404", },
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{ .compatible = "st,stih407", },
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{ .compatible = "st,stih410", },
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@ -1,249 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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*/
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/*
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* In Certain QCOM SoCs like apq8096 and msm8996 that have KRYO processors,
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* the CPU frequency subset and voltage value of each OPP varies
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* based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables
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* defines the voltage and frequency value based on the msm-id in SMEM
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* and speedbin blown in the efuse combination.
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* The qcom-cpufreq-kryo driver reads the msm-id and efuse value from the SoC
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* to provide the OPP framework with required information.
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* This is used to determine the voltage and frequency value for each OPP of
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* operating-points-v2 table when it is parsed by the OPP framework.
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*/
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#include <linux/cpu.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/nvmem-consumer.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/pm_opp.h>
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#include <linux/slab.h>
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#include <linux/soc/qcom/smem.h>
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#define MSM_ID_SMEM 137
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enum _msm_id {
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MSM8996V3 = 0xF6ul,
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APQ8096V3 = 0x123ul,
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MSM8996SG = 0x131ul,
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APQ8096SG = 0x138ul,
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};
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enum _msm8996_version {
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MSM8996_V3,
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MSM8996_SG,
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NUM_OF_MSM8996_VERSIONS,
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};
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static struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
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static enum _msm8996_version qcom_cpufreq_kryo_get_msm_id(void)
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{
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size_t len;
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u32 *msm_id;
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enum _msm8996_version version;
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msm_id = qcom_smem_get(QCOM_SMEM_HOST_ANY, MSM_ID_SMEM, &len);
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if (IS_ERR(msm_id))
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return NUM_OF_MSM8996_VERSIONS;
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/* The first 4 bytes are format, next to them is the actual msm-id */
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msm_id++;
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switch ((enum _msm_id)*msm_id) {
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case MSM8996V3:
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case APQ8096V3:
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version = MSM8996_V3;
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break;
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case MSM8996SG:
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case APQ8096SG:
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version = MSM8996_SG;
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break;
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default:
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version = NUM_OF_MSM8996_VERSIONS;
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}
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return version;
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}
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static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
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{
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struct opp_table **opp_tables;
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enum _msm8996_version msm8996_version;
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struct nvmem_cell *speedbin_nvmem;
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struct device_node *np;
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struct device *cpu_dev;
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unsigned cpu;
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u8 *speedbin;
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u32 versions;
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size_t len;
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int ret;
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cpu_dev = get_cpu_device(0);
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if (!cpu_dev)
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return -ENODEV;
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msm8996_version = qcom_cpufreq_kryo_get_msm_id();
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if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
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dev_err(cpu_dev, "Not Snapdragon 820/821!");
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return -ENODEV;
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}
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np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
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if (!np)
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return -ENOENT;
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ret = of_device_is_compatible(np, "operating-points-v2-kryo-cpu");
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if (!ret) {
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of_node_put(np);
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return -ENOENT;
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}
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speedbin_nvmem = of_nvmem_cell_get(np, NULL);
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of_node_put(np);
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if (IS_ERR(speedbin_nvmem)) {
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if (PTR_ERR(speedbin_nvmem) != -EPROBE_DEFER)
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dev_err(cpu_dev, "Could not get nvmem cell: %ld\n",
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PTR_ERR(speedbin_nvmem));
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return PTR_ERR(speedbin_nvmem);
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}
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speedbin = nvmem_cell_read(speedbin_nvmem, &len);
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nvmem_cell_put(speedbin_nvmem);
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if (IS_ERR(speedbin))
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return PTR_ERR(speedbin);
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switch (msm8996_version) {
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case MSM8996_V3:
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versions = 1 << (unsigned int)(*speedbin);
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break;
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case MSM8996_SG:
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versions = 1 << ((unsigned int)(*speedbin) + 4);
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break;
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default:
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BUG();
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break;
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}
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kfree(speedbin);
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opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL);
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if (!opp_tables)
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return -ENOMEM;
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for_each_possible_cpu(cpu) {
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cpu_dev = get_cpu_device(cpu);
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if (NULL == cpu_dev) {
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ret = -ENODEV;
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goto free_opp;
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}
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opp_tables[cpu] = dev_pm_opp_set_supported_hw(cpu_dev,
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&versions, 1);
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if (IS_ERR(opp_tables[cpu])) {
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ret = PTR_ERR(opp_tables[cpu]);
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dev_err(cpu_dev, "Failed to set supported hardware\n");
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goto free_opp;
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}
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}
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cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
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NULL, 0);
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if (!IS_ERR(cpufreq_dt_pdev)) {
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platform_set_drvdata(pdev, opp_tables);
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return 0;
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}
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ret = PTR_ERR(cpufreq_dt_pdev);
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dev_err(cpu_dev, "Failed to register platform device\n");
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free_opp:
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for_each_possible_cpu(cpu) {
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if (IS_ERR_OR_NULL(opp_tables[cpu]))
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break;
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dev_pm_opp_put_supported_hw(opp_tables[cpu]);
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}
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kfree(opp_tables);
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return ret;
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}
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static int qcom_cpufreq_kryo_remove(struct platform_device *pdev)
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{
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struct opp_table **opp_tables = platform_get_drvdata(pdev);
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unsigned int cpu;
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platform_device_unregister(cpufreq_dt_pdev);
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for_each_possible_cpu(cpu)
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dev_pm_opp_put_supported_hw(opp_tables[cpu]);
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kfree(opp_tables);
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return 0;
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}
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static struct platform_driver qcom_cpufreq_kryo_driver = {
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.probe = qcom_cpufreq_kryo_probe,
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.remove = qcom_cpufreq_kryo_remove,
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.driver = {
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.name = "qcom-cpufreq-kryo",
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},
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};
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static const struct of_device_id qcom_cpufreq_kryo_match_list[] __initconst = {
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{ .compatible = "qcom,apq8096", },
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{ .compatible = "qcom,msm8996", },
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{}
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};
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/*
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* Since the driver depends on smem and nvmem drivers, which may
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* return EPROBE_DEFER, all the real activity is done in the probe,
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* which may be defered as well. The init here is only registering
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* the driver and the platform device.
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*/
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static int __init qcom_cpufreq_kryo_init(void)
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{
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struct device_node *np = of_find_node_by_path("/");
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const struct of_device_id *match;
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int ret;
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if (!np)
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return -ENODEV;
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match = of_match_node(qcom_cpufreq_kryo_match_list, np);
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of_node_put(np);
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if (!match)
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return -ENODEV;
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ret = platform_driver_register(&qcom_cpufreq_kryo_driver);
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if (unlikely(ret < 0))
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return ret;
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kryo_cpufreq_pdev = platform_device_register_simple(
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"qcom-cpufreq-kryo", -1, NULL, 0);
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ret = PTR_ERR_OR_ZERO(kryo_cpufreq_pdev);
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if (0 == ret)
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return 0;
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platform_driver_unregister(&qcom_cpufreq_kryo_driver);
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return ret;
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}
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module_init(qcom_cpufreq_kryo_init);
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static void __exit qcom_cpufreq_kryo_exit(void)
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{
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platform_device_unregister(kryo_cpufreq_pdev);
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platform_driver_unregister(&qcom_cpufreq_kryo_driver);
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}
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module_exit(qcom_cpufreq_kryo_exit);
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MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver");
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MODULE_LICENSE("GPL v2");
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352
drivers/cpufreq/qcom-cpufreq-nvmem.c
Normal file
352
drivers/cpufreq/qcom-cpufreq-nvmem.c
Normal file
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|
@ -0,0 +1,352 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
|
||||
*/
|
||||
|
||||
/*
|
||||
* In Certain QCOM SoCs like apq8096 and msm8996 that have KRYO processors,
|
||||
* the CPU frequency subset and voltage value of each OPP varies
|
||||
* based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables
|
||||
* defines the voltage and frequency value based on the msm-id in SMEM
|
||||
* and speedbin blown in the efuse combination.
|
||||
* The qcom-cpufreq-nvmem driver reads the msm-id and efuse value from the SoC
|
||||
* to provide the OPP framework with required information.
|
||||
* This is used to determine the voltage and frequency value for each OPP of
|
||||
* operating-points-v2 table when it is parsed by the OPP framework.
|
||||
*/
|
||||
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/nvmem-consumer.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm_domain.h>
|
||||
#include <linux/pm_opp.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/soc/qcom/smem.h>
|
||||
|
||||
#define MSM_ID_SMEM 137
|
||||
|
||||
enum _msm_id {
|
||||
MSM8996V3 = 0xF6ul,
|
||||
APQ8096V3 = 0x123ul,
|
||||
MSM8996SG = 0x131ul,
|
||||
APQ8096SG = 0x138ul,
|
||||
};
|
||||
|
||||
enum _msm8996_version {
|
||||
MSM8996_V3,
|
||||
MSM8996_SG,
|
||||
NUM_OF_MSM8996_VERSIONS,
|
||||
};
|
||||
|
||||
struct qcom_cpufreq_drv;
|
||||
|
||||
struct qcom_cpufreq_match_data {
|
||||
int (*get_version)(struct device *cpu_dev,
|
||||
struct nvmem_cell *speedbin_nvmem,
|
||||
struct qcom_cpufreq_drv *drv);
|
||||
const char **genpd_names;
|
||||
};
|
||||
|
||||
struct qcom_cpufreq_drv {
|
||||
struct opp_table **opp_tables;
|
||||
struct opp_table **genpd_opp_tables;
|
||||
u32 versions;
|
||||
const struct qcom_cpufreq_match_data *data;
|
||||
};
|
||||
|
||||
static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev;
|
||||
|
||||
static enum _msm8996_version qcom_cpufreq_get_msm_id(void)
|
||||
{
|
||||
size_t len;
|
||||
u32 *msm_id;
|
||||
enum _msm8996_version version;
|
||||
|
||||
msm_id = qcom_smem_get(QCOM_SMEM_HOST_ANY, MSM_ID_SMEM, &len);
|
||||
if (IS_ERR(msm_id))
|
||||
return NUM_OF_MSM8996_VERSIONS;
|
||||
|
||||
/* The first 4 bytes are format, next to them is the actual msm-id */
|
||||
msm_id++;
|
||||
|
||||
switch ((enum _msm_id)*msm_id) {
|
||||
case MSM8996V3:
|
||||
case APQ8096V3:
|
||||
version = MSM8996_V3;
|
||||
break;
|
||||
case MSM8996SG:
|
||||
case APQ8096SG:
|
||||
version = MSM8996_SG;
|
||||
break;
|
||||
default:
|
||||
version = NUM_OF_MSM8996_VERSIONS;
|
||||
}
|
||||
|
||||
return version;
|
||||
}
|
||||
|
||||
static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
|
||||
struct nvmem_cell *speedbin_nvmem,
|
||||
struct qcom_cpufreq_drv *drv)
|
||||
{
|
||||
size_t len;
|
||||
u8 *speedbin;
|
||||
enum _msm8996_version msm8996_version;
|
||||
|
||||
msm8996_version = qcom_cpufreq_get_msm_id();
|
||||
if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
|
||||
dev_err(cpu_dev, "Not Snapdragon 820/821!");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
speedbin = nvmem_cell_read(speedbin_nvmem, &len);
|
||||
if (IS_ERR(speedbin))
|
||||
return PTR_ERR(speedbin);
|
||||
|
||||
switch (msm8996_version) {
|
||||
case MSM8996_V3:
|
||||
drv->versions = 1 << (unsigned int)(*speedbin);
|
||||
break;
|
||||
case MSM8996_SG:
|
||||
drv->versions = 1 << ((unsigned int)(*speedbin) + 4);
|
||||
break;
|
||||
default:
|
||||
BUG();
|
||||
break;
|
||||
}
|
||||
|
||||
kfree(speedbin);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct qcom_cpufreq_match_data match_data_kryo = {
|
||||
.get_version = qcom_cpufreq_kryo_name_version,
|
||||
};
|
||||
|
||||
static const char *qcs404_genpd_names[] = { "cpr", NULL };
|
||||
|
||||
static const struct qcom_cpufreq_match_data match_data_qcs404 = {
|
||||
.genpd_names = qcs404_genpd_names,
|
||||
};
|
||||
|
||||
static int qcom_cpufreq_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct qcom_cpufreq_drv *drv;
|
||||
struct nvmem_cell *speedbin_nvmem;
|
||||
struct device_node *np;
|
||||
struct device *cpu_dev;
|
||||
unsigned cpu;
|
||||
const struct of_device_id *match;
|
||||
int ret;
|
||||
|
||||
cpu_dev = get_cpu_device(0);
|
||||
if (!cpu_dev)
|
||||
return -ENODEV;
|
||||
|
||||
np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
|
||||
if (!np)
|
||||
return -ENOENT;
|
||||
|
||||
ret = of_device_is_compatible(np, "operating-points-v2-kryo-cpu");
|
||||
if (!ret) {
|
||||
of_node_put(np);
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
drv = kzalloc(sizeof(*drv), GFP_KERNEL);
|
||||
if (!drv)
|
||||
return -ENOMEM;
|
||||
|
||||
match = pdev->dev.platform_data;
|
||||
drv->data = match->data;
|
||||
if (!drv->data) {
|
||||
ret = -ENODEV;
|
||||
goto free_drv;
|
||||
}
|
||||
|
||||
if (drv->data->get_version) {
|
||||
speedbin_nvmem = of_nvmem_cell_get(np, NULL);
|
||||
if (IS_ERR(speedbin_nvmem)) {
|
||||
if (PTR_ERR(speedbin_nvmem) != -EPROBE_DEFER)
|
||||
dev_err(cpu_dev,
|
||||
"Could not get nvmem cell: %ld\n",
|
||||
PTR_ERR(speedbin_nvmem));
|
||||
ret = PTR_ERR(speedbin_nvmem);
|
||||
goto free_drv;
|
||||
}
|
||||
|
||||
ret = drv->data->get_version(cpu_dev, speedbin_nvmem, drv);
|
||||
if (ret) {
|
||||
nvmem_cell_put(speedbin_nvmem);
|
||||
goto free_drv;
|
||||
}
|
||||
nvmem_cell_put(speedbin_nvmem);
|
||||
}
|
||||
of_node_put(np);
|
||||
|
||||
drv->opp_tables = kcalloc(num_possible_cpus(), sizeof(*drv->opp_tables),
|
||||
GFP_KERNEL);
|
||||
if (!drv->opp_tables) {
|
||||
ret = -ENOMEM;
|
||||
goto free_drv;
|
||||
}
|
||||
|
||||
drv->genpd_opp_tables = kcalloc(num_possible_cpus(),
|
||||
sizeof(*drv->genpd_opp_tables),
|
||||
GFP_KERNEL);
|
||||
if (!drv->genpd_opp_tables) {
|
||||
ret = -ENOMEM;
|
||||
goto free_opp;
|
||||
}
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
cpu_dev = get_cpu_device(cpu);
|
||||
if (NULL == cpu_dev) {
|
||||
ret = -ENODEV;
|
||||
goto free_genpd_opp;
|
||||
}
|
||||
|
||||
if (drv->data->get_version) {
|
||||
drv->opp_tables[cpu] =
|
||||
dev_pm_opp_set_supported_hw(cpu_dev,
|
||||
&drv->versions, 1);
|
||||
if (IS_ERR(drv->opp_tables[cpu])) {
|
||||
ret = PTR_ERR(drv->opp_tables[cpu]);
|
||||
dev_err(cpu_dev,
|
||||
"Failed to set supported hardware\n");
|
||||
goto free_genpd_opp;
|
||||
}
|
||||
}
|
||||
|
||||
if (drv->data->genpd_names) {
|
||||
drv->genpd_opp_tables[cpu] =
|
||||
dev_pm_opp_attach_genpd(cpu_dev,
|
||||
drv->data->genpd_names,
|
||||
NULL);
|
||||
if (IS_ERR(drv->genpd_opp_tables[cpu])) {
|
||||
ret = PTR_ERR(drv->genpd_opp_tables[cpu]);
|
||||
if (ret != -EPROBE_DEFER)
|
||||
dev_err(cpu_dev,
|
||||
"Could not attach to pm_domain: %d\n",
|
||||
ret);
|
||||
goto free_genpd_opp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
|
||||
NULL, 0);
|
||||
if (!IS_ERR(cpufreq_dt_pdev)) {
|
||||
platform_set_drvdata(pdev, drv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
ret = PTR_ERR(cpufreq_dt_pdev);
|
||||
dev_err(cpu_dev, "Failed to register platform device\n");
|
||||
|
||||
free_genpd_opp:
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (IS_ERR_OR_NULL(drv->genpd_opp_tables[cpu]))
|
||||
break;
|
||||
dev_pm_opp_detach_genpd(drv->genpd_opp_tables[cpu]);
|
||||
}
|
||||
kfree(drv->genpd_opp_tables);
|
||||
free_opp:
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (IS_ERR_OR_NULL(drv->opp_tables[cpu]))
|
||||
break;
|
||||
dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]);
|
||||
}
|
||||
kfree(drv->opp_tables);
|
||||
free_drv:
|
||||
kfree(drv);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int qcom_cpufreq_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct qcom_cpufreq_drv *drv = platform_get_drvdata(pdev);
|
||||
unsigned int cpu;
|
||||
|
||||
platform_device_unregister(cpufreq_dt_pdev);
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (drv->opp_tables[cpu])
|
||||
dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]);
|
||||
if (drv->genpd_opp_tables[cpu])
|
||||
dev_pm_opp_detach_genpd(drv->genpd_opp_tables[cpu]);
|
||||
}
|
||||
|
||||
kfree(drv->opp_tables);
|
||||
kfree(drv->genpd_opp_tables);
|
||||
kfree(drv);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver qcom_cpufreq_driver = {
|
||||
.probe = qcom_cpufreq_probe,
|
||||
.remove = qcom_cpufreq_remove,
|
||||
.driver = {
|
||||
.name = "qcom-cpufreq-nvmem",
|
||||
},
|
||||
};
|
||||
|
||||
static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
|
||||
{ .compatible = "qcom,apq8096", .data = &match_data_kryo },
|
||||
{ .compatible = "qcom,msm8996", .data = &match_data_kryo },
|
||||
{ .compatible = "qcom,qcs404", .data = &match_data_qcs404 },
|
||||
{},
|
||||
};
|
||||
|
||||
/*
|
||||
* Since the driver depends on smem and nvmem drivers, which may
|
||||
* return EPROBE_DEFER, all the real activity is done in the probe,
|
||||
* which may be defered as well. The init here is only registering
|
||||
* the driver and the platform device.
|
||||
*/
|
||||
static int __init qcom_cpufreq_init(void)
|
||||
{
|
||||
struct device_node *np = of_find_node_by_path("/");
|
||||
const struct of_device_id *match;
|
||||
int ret;
|
||||
|
||||
if (!np)
|
||||
return -ENODEV;
|
||||
|
||||
match = of_match_node(qcom_cpufreq_match_list, np);
|
||||
of_node_put(np);
|
||||
if (!match)
|
||||
return -ENODEV;
|
||||
|
||||
ret = platform_driver_register(&qcom_cpufreq_driver);
|
||||
if (unlikely(ret < 0))
|
||||
return ret;
|
||||
|
||||
cpufreq_pdev = platform_device_register_data(NULL, "qcom-cpufreq-nvmem",
|
||||
-1, match, sizeof(*match));
|
||||
ret = PTR_ERR_OR_ZERO(cpufreq_pdev);
|
||||
if (0 == ret)
|
||||
return 0;
|
||||
|
||||
platform_driver_unregister(&qcom_cpufreq_driver);
|
||||
return ret;
|
||||
}
|
||||
module_init(qcom_cpufreq_init);
|
||||
|
||||
static void __exit qcom_cpufreq_exit(void)
|
||||
{
|
||||
platform_device_unregister(cpufreq_pdev);
|
||||
platform_driver_unregister(&qcom_cpufreq_driver);
|
||||
}
|
||||
module_exit(qcom_cpufreq_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. CPUfreq driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in a new issue