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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-09-05 09:02:51 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-09-05 09:02:51 +0200
commit1c5c1b5d8efe21efa74b7a21e8c078711b984ae4 (patch)
tree83001d4114512e7e95d10c4cab04664173fdbbd0 /drivers/cpufreq
parentbeb4e08e21ad964c11203a4ae6c7ba16a35df4f5 (diff)
parentf75d2accca7785657311653c125bb22f342dc5d9 (diff)
downloadlinux-1c5c1b5d8efe21efa74b7a21e8c078711b984ae4.tar.bz2
Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull ARM cpufreq driver changes for 5.4 from Viresh Kumar: "This contains: - Minor fixes for mediatek driver (Andrew-sh.Cheng and Fabien Parent). - Minor updates for imx driver (Anson Huang). - Minor fix for ti-cpufreq driver (Gustavo A. R. Silva). - Minor fix for ap806 driver (Hariprasad Kelam). - Significant updates to qcom cpufreq drivers, mostly to support CPR stuff (Jorge Ramirez-Ortiz, Niklas Cassel, Sibi Sankar, Douglas RAILLARD and Sricharan R). - New sun50i cpufreq driver (Yangtao Li). It also contains a few OPP changes which were required because of dependencies for the qcom cpufreq changes." * 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (22 commits) cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist cpufreq: qcom: Add support for qcs404 on nvmem driver cpufreq: qcom: Refactor the driver to make it easier to extend cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs dt-bindings: opp: Add qcom-opp bindings with properties needed for CPR dt-bindings: opp: qcom-nvmem: Support pstates provided by a power domain cpufreq: mediatek: Add support for mt8183 cpufreq: mediatek: change to regulator_get_optional cpufreq: imx-cpufreq-dt: Add i.MX8MN support cpufreq: Use imx-cpufreq-dt for i.MX8MN's speed grading cpufreq: qcom-hw: invoke frequency-invariance setter function cpufreq: qcom-hw: Update logic to detect turbo frequency cpufreq: mediatek-cpufreq: Add compatible for MT8516 cpufreq: ti-cpufreq: Mark expected switch fall-through dt-bindings: opp: qcom-nvmem: Make speedbin related properties optional dt-bindings: opp: Re-organise kryo cpufreq to use it for other nvmem based qcom socs opp: Add dev_pm_opp_find_level_exact() opp: Return genpd virtual devices from dev_pm_opp_attach_genpd() opp: Not all power-domains are scalable cpufreq: ap806: Add NULL check after kcalloc ...
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/Kconfig.arm16
-rw-r--r--drivers/cpufreq/Makefile3
-rw-r--r--drivers/cpufreq/armada-8k-cpufreq.c2
-rw-r--r--drivers/cpufreq/cpufreq-dt-platdev.c5
-rw-r--r--drivers/cpufreq/imx-cpufreq-dt.c8
-rw-r--r--drivers/cpufreq/mediatek-cpufreq.c4
-rw-r--r--drivers/cpufreq/qcom-cpufreq-hw.c23
-rw-r--r--drivers/cpufreq/qcom-cpufreq-kryo.c249
-rw-r--r--drivers/cpufreq/qcom-cpufreq-nvmem.c352
-rw-r--r--drivers/cpufreq/sun50i-cpufreq-nvmem.c226
-rw-r--r--drivers/cpufreq/ti-cpufreq.c1
11 files changed, 627 insertions, 262 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 56c31a78c692..a905796f7f85 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -19,6 +19,18 @@ config ACPI_CPPC_CPUFREQ
If in doubt, say N.
+config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
+ tristate "Allwinner nvmem based SUN50I CPUFreq driver"
+ depends on ARCH_SUNXI
+ depends on NVMEM_SUNXI_SID
+ select PM_OPP
+ help
+ This adds the nvmem based CPUFreq driver for Allwinner
+ h6 SoC.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sun50i-cpufreq-nvmem.
+
config ARM_ARMADA_37XX_CPUFREQ
tristate "Armada 37xx CPUFreq support"
depends on ARCH_MVEBU && CPUFREQ_DT
@@ -120,8 +132,8 @@ config ARM_OMAP2PLUS_CPUFREQ
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
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 5a6c70d26c98..9a9f5ccd13d9 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -64,7 +64,7 @@ obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o
obj-$(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-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o
@@ -80,6 +80,7 @@ obj-$(CONFIG_ARM_SCMI_CPUFREQ) += scmi-cpufreq.o
obj-$(CONFIG_ARM_SCPI_CPUFREQ) += scpi-cpufreq.o
obj-$(CONFIG_ARM_SPEAR_CPUFREQ) += spear-cpufreq.o
obj-$(CONFIG_ARM_STI_CPUFREQ) += sti-cpufreq.o
+obj-$(CONFIG_ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM) += sun50i-cpufreq-nvmem.o
obj-$(CONFIG_ARM_TANGO_CPUFREQ) += tango-cpufreq.o
obj-$(CONFIG_ARM_TEGRA20_CPUFREQ) += tegra20-cpufreq.o
obj-$(CONFIG_ARM_TEGRA124_CPUFREQ) += tegra124-cpufreq.o
diff --git a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c
index 988ebc326bdb..39e34f5066d3 100644
--- a/drivers/cpufreq/armada-8k-cpufreq.c
+++ b/drivers/cpufreq/armada-8k-cpufreq.c
@@ -136,6 +136,8 @@ static int __init armada_8k_cpufreq_init(void)
nb_cpus = num_possible_cpus();
freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);
+ if (!freq_tables)
+ return -ENOMEM;
cpumask_copy(&cpus, cpu_possible_mask);
/*
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 03dc4244ab00..bca8d1f47fd2 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -101,12 +101,15 @@ static const struct of_device_id whitelist[] __initconst = {
* platforms using "operating-points-v2" property.
*/
static const struct of_device_id blacklist[] __initconst = {
+ { .compatible = "allwinner,sun50i-h6", },
+
{ .compatible = "calxeda,highbank", },
{ .compatible = "calxeda,ecx-2000", },
{ .compatible = "fsl,imx7d", },
{ .compatible = "fsl,imx8mq", },
{ .compatible = "fsl,imx8mm", },
+ { .compatible = "fsl,imx8mn", },
{ .compatible = "marvell,armadaxp", },
@@ -117,12 +120,14 @@ static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "mediatek,mt817x", },
{ .compatible = "mediatek,mt8173", },
{ .compatible = "mediatek,mt8176", },
+ { .compatible = "mediatek,mt8183", },
{ .compatible = "nvidia,tegra124", },
{ .compatible = "nvidia,tegra210", },
{ .compatible = "qcom,apq8096", },
{ .compatible = "qcom,msm8996", },
+ { .compatible = "qcom,qcs404", },
{ .compatible = "st,stih407", },
{ .compatible = "st,stih410", },
diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c
index 4f85f3112784..35db14cf3102 100644
--- a/drivers/cpufreq/imx-cpufreq-dt.c
+++ b/drivers/cpufreq/imx-cpufreq-dt.c
@@ -16,6 +16,7 @@
#define OCOTP_CFG3_SPEED_GRADE_SHIFT 8
#define OCOTP_CFG3_SPEED_GRADE_MASK (0x3 << 8)
+#define IMX8MN_OCOTP_CFG3_SPEED_GRADE_MASK (0xf << 8)
#define OCOTP_CFG3_MKT_SEGMENT_SHIFT 6
#define OCOTP_CFG3_MKT_SEGMENT_MASK (0x3 << 6)
@@ -34,7 +35,12 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
if (ret)
return ret;
- speed_grade = (cell_value & OCOTP_CFG3_SPEED_GRADE_MASK) >> OCOTP_CFG3_SPEED_GRADE_SHIFT;
+ if (of_machine_is_compatible("fsl,imx8mn"))
+ speed_grade = (cell_value & IMX8MN_OCOTP_CFG3_SPEED_GRADE_MASK)
+ >> OCOTP_CFG3_SPEED_GRADE_SHIFT;
+ else
+ speed_grade = (cell_value & OCOTP_CFG3_SPEED_GRADE_MASK)
+ >> OCOTP_CFG3_SPEED_GRADE_SHIFT;
mkt_segment = (cell_value & OCOTP_CFG3_MKT_SEGMENT_MASK) >> OCOTP_CFG3_MKT_SEGMENT_SHIFT;
/*
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index f14f3a85f2f7..0c98dd08273d 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -338,7 +338,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
goto out_free_resources;
}
- proc_reg = regulator_get_exclusive(cpu_dev, "proc");
+ proc_reg = regulator_get_optional(cpu_dev, "proc");
if (IS_ERR(proc_reg)) {
if (PTR_ERR(proc_reg) == -EPROBE_DEFER)
pr_warn("proc regulator for cpu%d not ready, retry.\n",
@@ -535,6 +535,8 @@ static const struct of_device_id mtk_cpufreq_machines[] __initconst = {
{ .compatible = "mediatek,mt817x", },
{ .compatible = "mediatek,mt8173", },
{ .compatible = "mediatek,mt8176", },
+ { .compatible = "mediatek,mt8183", },
+ { .compatible = "mediatek,mt8516", },
{ }
};
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 4b0b50403901..a9ae2f84a4ef 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -20,6 +20,7 @@
#define LUT_VOLT GENMASK(11, 0)
#define LUT_ROW_SIZE 32
#define CLK_HW_DIV 2
+#define LUT_TURBO_IND 1
/* Register offsets */
#define REG_ENABLE 0x0
@@ -34,9 +35,12 @@ static int qcom_cpufreq_hw_target_index(struct cpufreq_policy *policy,
unsigned int index)
{
void __iomem *perf_state_reg = policy->driver_data;
+ unsigned long freq = policy->freq_table[index].frequency;
writel_relaxed(index, perf_state_reg);
+ arch_set_freq_scale(policy->related_cpus, freq,
+ policy->cpuinfo.max_freq);
return 0;
}
@@ -63,6 +67,7 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
{
void __iomem *perf_state_reg = policy->driver_data;
int index;
+ unsigned long freq;
index = policy->cached_resolved_idx;
if (index < 0)
@@ -70,16 +75,19 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
writel_relaxed(index, perf_state_reg);
- return policy->freq_table[index].frequency;
+ freq = policy->freq_table[index].frequency;
+ arch_set_freq_scale(policy->related_cpus, freq,
+ policy->cpuinfo.max_freq);
+
+ return freq;
}
static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
struct cpufreq_policy *policy,
void __iomem *base)
{
- u32 data, src, lval, i, core_count, prev_cc = 0, prev_freq = 0, freq;
+ u32 data, src, lval, i, core_count, prev_freq = 0, freq;
u32 volt;
- unsigned int max_cores = cpumask_weight(policy->cpus);
struct cpufreq_frequency_table *table;
table = kcalloc(LUT_MAX_ENTRIES + 1, sizeof(*table), GFP_KERNEL);
@@ -102,12 +110,12 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
else
freq = cpu_hw_rate / 1000;
- if (freq != prev_freq && core_count == max_cores) {
+ if (freq != prev_freq && core_count != LUT_TURBO_IND) {
table[i].frequency = freq;
dev_pm_opp_add(cpu_dev, freq * 1000, volt);
dev_dbg(cpu_dev, "index=%d freq=%d, core_count %d\n", i,
freq, core_count);
- } else {
+ } else if (core_count == LUT_TURBO_IND) {
table[i].frequency = CPUFREQ_ENTRY_INVALID;
}
@@ -115,14 +123,14 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
* Two of the same frequencies with the same core counts means
* end of table
*/
- if (i > 0 && prev_freq == freq && prev_cc == core_count) {
+ if (i > 0 && prev_freq == freq) {
struct cpufreq_frequency_table *prev = &table[i - 1];
/*
* Only treat the last frequency that might be a boost
* as the boost frequency
*/
- if (prev_cc != max_cores) {
+ if (prev->frequency == CPUFREQ_ENTRY_INVALID) {
prev->frequency = prev_freq;
prev->flags = CPUFREQ_BOOST_FREQ;
dev_pm_opp_add(cpu_dev, prev_freq * 1000, volt);
@@ -131,7 +139,6 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
break;
}
- prev_cc = core_count;
prev_freq = freq;
}
diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
deleted file mode 100644
index dd64dcf89c74..000000000000
--- a/drivers/cpufreq/qcom-cpufreq-kryo.c
+++ /dev/null
@@ -1,249 +0,0 @@
-// 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");
diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
new file mode 100644
index 000000000000..f0d2d5035413
--- /dev/null
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -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");
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
new file mode 100644
index 000000000000..eca32e443716
--- /dev/null
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Allwinner CPUFreq nvmem based driver
+ *
+ * The sun50i-cpufreq-nvmem driver reads the efuse value from the SoC to
+ * provide the OPP framework with required information.
+ *
+ * Copyright (C) 2019 Yangtao Li <tiny.windzz@gmail.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/slab.h>
+
+#define MAX_NAME_LEN 7
+
+#define NVMEM_MASK 0x7
+#define NVMEM_SHIFT 5
+
+static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
+
+/**
+ * sun50i_cpufreq_get_efuse() - Parse and return efuse value present on SoC
+ * @versions: Set to the value parsed from efuse
+ *
+ * Returns 0 if success.
+ */
+static int sun50i_cpufreq_get_efuse(u32 *versions)
+{
+ struct nvmem_cell *speedbin_nvmem;
+ struct device_node *np;
+ struct device *cpu_dev;
+ u32 *speedbin, efuse_value;
+ size_t len;
+ 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,
+ "allwinner,sun50i-h6-operating-points");
+ 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)
+ pr_err("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);
+
+ efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
+ switch (efuse_value) {
+ case 0b0001:
+ *versions = 1;
+ break;
+ case 0b0011:
+ *versions = 2;
+ break;
+ default:
+ /*
+ * For other situations, we treat it as bin0.
+ * This vf table can be run for any good cpu.
+ */
+ *versions = 0;
+ break;
+ }
+
+ kfree(speedbin);
+ return 0;
+};
+
+static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
+{
+ struct opp_table **opp_tables;
+ char name[MAX_NAME_LEN];
+ unsigned int cpu;
+ u32 speed = 0;
+ int ret;
+
+ opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
+ GFP_KERNEL);
+ if (!opp_tables)
+ return -ENOMEM;
+
+ ret = sun50i_cpufreq_get_efuse(&speed);
+ if (ret)
+ return ret;
+
+ snprintf(name, MAX_NAME_LEN, "speed%d", speed);
+
+ for_each_possible_cpu(cpu) {
+ struct device *cpu_dev = get_cpu_device(cpu);
+
+ if (!cpu_dev) {
+ ret = -ENODEV;
+ goto free_opp;
+ }
+
+ opp_tables[cpu] = dev_pm_opp_set_prop_name(cpu_dev, name);
+ if (IS_ERR(opp_tables[cpu])) {
+ ret = PTR_ERR(opp_tables[cpu]);
+ pr_err("Failed to set prop name\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);
+ pr_err("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_prop_name(opp_tables[cpu]);
+ }
+ kfree(opp_tables);
+
+ return ret;
+}
+
+static int sun50i_cpufreq_nvmem_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_prop_name(opp_tables[cpu]);
+
+ kfree(opp_tables);
+
+ return 0;
+}
+
+static struct platform_driver sun50i_cpufreq_driver = {
+ .probe = sun50i_cpufreq_nvmem_probe,
+ .remove = sun50i_cpufreq_nvmem_remove,
+ .driver = {
+ .name = "sun50i-cpufreq-nvmem",
+ },
+};
+
+static const struct of_device_id sun50i_cpufreq_match_list[] = {
+ { .compatible = "allwinner,sun50i-h6" },
+ {}
+};
+
+static const struct of_device_id *sun50i_cpufreq_match_node(void)
+{
+ const struct of_device_id *match;
+ struct device_node *np;
+
+ np = of_find_node_by_path("/");
+ match = of_match_node(sun50i_cpufreq_match_list, np);
+ of_node_put(np);
+
+ return match;
+}
+
+/*
+ * Since the driver depends on 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 sun50i_cpufreq_init(void)
+{
+ const struct of_device_id *match;
+ int ret;
+
+ match = sun50i_cpufreq_match_node();
+ if (!match)
+ return -ENODEV;
+
+ ret = platform_driver_register(&sun50i_cpufreq_driver);
+ if (unlikely(ret < 0))
+ return ret;
+
+ sun50i_cpufreq_pdev =
+ platform_device_register_simple("sun50i-cpufreq-nvmem",
+ -1, NULL, 0);
+ ret = PTR_ERR_OR_ZERO(sun50i_cpufreq_pdev);
+ if (ret == 0)
+ return 0;
+
+ platform_driver_unregister(&sun50i_cpufreq_driver);
+ return ret;
+}
+module_init(sun50i_cpufreq_init);
+
+static void __exit sun50i_cpufreq_exit(void)
+{
+ platform_device_unregister(sun50i_cpufreq_pdev);
+ platform_driver_unregister(&sun50i_cpufreq_driver);
+}
+module_exit(sun50i_cpufreq_exit);
+
+MODULE_DESCRIPTION("Sun50i-h6 cpufreq driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 2ad1ae17932d..aeaa883a8c9d 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -77,6 +77,7 @@ static unsigned long dra7_efuse_xlate(struct ti_cpufreq_data *opp_data,
case DRA7_EFUSE_HAS_ALL_MPU_OPP:
case DRA7_EFUSE_HAS_HIGH_MPU_OPP:
calculated_efuse |= DRA7_EFUSE_HIGH_MPU_OPP;
+ /* Fall through */
case DRA7_EFUSE_HAS_OD_MPU_OPP:
calculated_efuse |= DRA7_EFUSE_OD_MPU_OPP;
}