M: Ilia Lin <ilia.lin@kernel.org>
L: linux-pm@vger.kernel.org
S: Maintained
-F: Documentation/devicetree/bindings/opp/kryo-cpufreq.txt
-F: drivers/cpufreq/qcom-cpufreq-kryo.c
+F: Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
+F: drivers/cpufreq/qcom-cpufreq-nvmem.c
QUALCOMM EMAC GIGABIT ETHERNET DRIVER
M: Timur Tabi <timur@kernel.org>
depends on ARCH_OMAP2PLUS
default ARCH_OMAP2PLUS
-config ARM_QCOM_CPUFREQ_KRYO
- tristate "Qualcomm Kryo based CPUFreq"
+config ARM_QCOM_CPUFREQ_NVMEM
+ tristate "Qualcomm nvmem based CPUFreq"
depends on ARM64
depends on QCOM_QFPROM
depends on QCOM_SMEM
obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o
obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o
obj-$(CONFIG_ARM_QCOM_CPUFREQ_HW) += qcom-cpufreq-hw.o
-obj-$(CONFIG_ARM_QCOM_CPUFREQ_KRYO) += qcom-cpufreq-kryo.o
+obj-$(CONFIG_ARM_QCOM_CPUFREQ_NVMEM) += qcom-cpufreq-nvmem.o
obj-$(CONFIG_ARM_RASPBERRYPI_CPUFREQ) += raspberrypi-cpufreq.o
obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o
obj-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o
+++ /dev/null
-// 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-kryo 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/platform_device.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,
-};
-
-static struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
-
-static enum _msm8996_version qcom_cpufreq_kryo_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_probe(struct platform_device *pdev)
-{
- struct opp_table **opp_tables;
- enum _msm8996_version msm8996_version;
- struct nvmem_cell *speedbin_nvmem;
- struct device_node *np;
- struct device *cpu_dev;
- unsigned cpu;
- u8 *speedbin;
- u32 versions;
- size_t len;
- int ret;
-
- cpu_dev = get_cpu_device(0);
- if (!cpu_dev)
- return -ENODEV;
-
- msm8996_version = qcom_cpufreq_kryo_get_msm_id();
- if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
- dev_err(cpu_dev, "Not Snapdragon 820/821!");
- 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;
- }
-
- speedbin_nvmem = of_nvmem_cell_get(np, NULL);
- of_node_put(np);
- 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));
- return PTR_ERR(speedbin_nvmem);
- }
-
- speedbin = nvmem_cell_read(speedbin_nvmem, &len);
- nvmem_cell_put(speedbin_nvmem);
- if (IS_ERR(speedbin))
- return PTR_ERR(speedbin);
-
- switch (msm8996_version) {
- case MSM8996_V3:
- versions = 1 << (unsigned int)(*speedbin);
- break;
- case MSM8996_SG:
- versions = 1 << ((unsigned int)(*speedbin) + 4);
- break;
- default:
- BUG();
- break;
- }
- kfree(speedbin);
-
- opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL);
- if (!opp_tables)
- return -ENOMEM;
-
- for_each_possible_cpu(cpu) {
- cpu_dev = get_cpu_device(cpu);
- if (NULL == cpu_dev) {
- ret = -ENODEV;
- goto free_opp;
- }
-
- opp_tables[cpu] = dev_pm_opp_set_supported_hw(cpu_dev,
- &versions, 1);
- if (IS_ERR(opp_tables[cpu])) {
- ret = PTR_ERR(opp_tables[cpu]);
- dev_err(cpu_dev, "Failed to set supported hardware\n");
- goto free_opp;
- }
- }
-
- cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
- NULL, 0);
- if (!IS_ERR(cpufreq_dt_pdev)) {
- platform_set_drvdata(pdev, opp_tables);
- return 0;
- }
-
- ret = PTR_ERR(cpufreq_dt_pdev);
- dev_err(cpu_dev, "Failed to register platform device\n");
-
-free_opp:
- for_each_possible_cpu(cpu) {
- if (IS_ERR_OR_NULL(opp_tables[cpu]))
- break;
- dev_pm_opp_put_supported_hw(opp_tables[cpu]);
- }
- kfree(opp_tables);
-
- return ret;
-}
-
-static int qcom_cpufreq_kryo_remove(struct platform_device *pdev)
-{
- struct opp_table **opp_tables = platform_get_drvdata(pdev);
- unsigned int cpu;
-
- platform_device_unregister(cpufreq_dt_pdev);
-
- for_each_possible_cpu(cpu)
- dev_pm_opp_put_supported_hw(opp_tables[cpu]);
-
- kfree(opp_tables);
-
- return 0;
-}
-
-static struct platform_driver qcom_cpufreq_kryo_driver = {
- .probe = qcom_cpufreq_kryo_probe,
- .remove = qcom_cpufreq_kryo_remove,
- .driver = {
- .name = "qcom-cpufreq-kryo",
- },
-};
-
-static const struct of_device_id qcom_cpufreq_kryo_match_list[] __initconst = {
- { .compatible = "qcom,apq8096", },
- { .compatible = "qcom,msm8996", },
- {}
-};
-
-/*
- * 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_kryo_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_kryo_match_list, np);
- of_node_put(np);
- if (!match)
- return -ENODEV;
-
- ret = platform_driver_register(&qcom_cpufreq_kryo_driver);
- if (unlikely(ret < 0))
- return ret;
-
- kryo_cpufreq_pdev = platform_device_register_simple(
- "qcom-cpufreq-kryo", -1, NULL, 0);
- ret = PTR_ERR_OR_ZERO(kryo_cpufreq_pdev);
- if (0 == ret)
- return 0;
-
- platform_driver_unregister(&qcom_cpufreq_kryo_driver);
- return ret;
-}
-module_init(qcom_cpufreq_kryo_init);
-
-static void __exit qcom_cpufreq_kryo_exit(void)
-{
- platform_device_unregister(kryo_cpufreq_pdev);
- platform_driver_unregister(&qcom_cpufreq_kryo_driver);
-}
-module_exit(qcom_cpufreq_kryo_exit);
-
-MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver");
-MODULE_LICENSE("GPL v2");
--- /dev/null
+// 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_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,
+};
+
+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,
+ u32 *versions)
+{
+ 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:
+ *versions = 1 << (unsigned int)(*speedbin);
+ break;
+ case MSM8996_SG:
+ *versions = 1 << ((unsigned int)(*speedbin) + 4);
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ kfree(speedbin);
+ return 0;
+}
+
+static int qcom_cpufreq_probe(struct platform_device *pdev)
+{
+ struct opp_table **opp_tables;
+ int (*get_version)(struct device *cpu_dev,
+ struct nvmem_cell *speedbin_nvmem,
+ u32 *versions);
+ struct nvmem_cell *speedbin_nvmem;
+ struct device_node *np;
+ struct device *cpu_dev;
+ unsigned cpu;
+ u32 versions;
+ const struct of_device_id *match;
+ int ret;
+
+ cpu_dev = get_cpu_device(0);
+ if (!cpu_dev)
+ return -ENODEV;
+
+ match = pdev->dev.platform_data;
+ get_version = match->data;
+ if (!get_version)
+ 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;
+ }
+
+ speedbin_nvmem = of_nvmem_cell_get(np, NULL);
+ of_node_put(np);
+ 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));
+ return PTR_ERR(speedbin_nvmem);
+ }
+
+ ret = get_version(cpu_dev, speedbin_nvmem, &versions);
+ nvmem_cell_put(speedbin_nvmem);
+ if (ret)
+ return ret;
+
+ opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL);
+ if (!opp_tables)
+ return -ENOMEM;
+
+ for_each_possible_cpu(cpu) {
+ cpu_dev = get_cpu_device(cpu);
+ if (NULL == cpu_dev) {
+ ret = -ENODEV;
+ goto free_opp;
+ }
+
+ opp_tables[cpu] = dev_pm_opp_set_supported_hw(cpu_dev,
+ &versions, 1);
+ if (IS_ERR(opp_tables[cpu])) {
+ ret = PTR_ERR(opp_tables[cpu]);
+ dev_err(cpu_dev, "Failed to set supported hardware\n");
+ goto free_opp;
+ }
+ }
+
+ cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
+ NULL, 0);
+ if (!IS_ERR(cpufreq_dt_pdev)) {
+ platform_set_drvdata(pdev, opp_tables);
+ return 0;
+ }
+
+ ret = PTR_ERR(cpufreq_dt_pdev);
+ dev_err(cpu_dev, "Failed to register platform device\n");
+
+free_opp:
+ for_each_possible_cpu(cpu) {
+ if (IS_ERR_OR_NULL(opp_tables[cpu]))
+ break;
+ dev_pm_opp_put_supported_hw(opp_tables[cpu]);
+ }
+ kfree(opp_tables);
+
+ return ret;
+}
+
+static int qcom_cpufreq_remove(struct platform_device *pdev)
+{
+ struct opp_table **opp_tables = platform_get_drvdata(pdev);
+ unsigned int cpu;
+
+ platform_device_unregister(cpufreq_dt_pdev);
+
+ for_each_possible_cpu(cpu)
+ dev_pm_opp_put_supported_hw(opp_tables[cpu]);
+
+ kfree(opp_tables);
+
+ 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 = qcom_cpufreq_kryo_name_version },
+ { .compatible = "qcom,msm8996",
+ .data = qcom_cpufreq_kryo_name_version },
+ {},
+};
+
+/*
+ * 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");
projects / openwrt / staging / blogic.git / commitdiff