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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-01-18 02:52:56 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-01-18 02:52:56 +0100
commitf31c376025b5b295908d4b8ec74811be7d7e15f8 (patch)
tree766845cd39d7adfc192ce0b16d75d8a8e4f8be02 /drivers
parentbee344cb70e9bf5ad929e0a493c0f7aa3a587bfb (diff)
parentf06970f4b03dffeb9831a8ad605db3c85a55aca1 (diff)
downloadlinux-f31c376025b5b295908d4b8ec74811be7d7e15f8.tar.bz2
Merge branch 'pm-cpufreq'
* pm-cpufreq: (36 commits) cpufreq: scpi: remove arm_big_little dependency drivers: psci: remove cluster terminology and dependency on physical_package_id cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin cpufreq: intel_pstate: Add Skylake servers support cpufreq: intel_pstate: Replace bxt_funcs with core_funcs cpufreq: imx6q: add 696MHz operating point for i.mx6ul ARM: dts: imx6ul: add 696MHz operating point cpufreq: stats: Change return type of cpufreq_stats_update() as void powernv-cpufreq: Treat pstates as opaque 8-bit values powernv-cpufreq: Fix pstate_to_idx() to handle non-continguous pstates powernv-cpufreq: Add helper to extract pstate from PMSR cpu_cooling: Remove static-power related documentation cpufreq: imx6q: switch to Use clk_bulk_get() to refine clk operations PM / OPP: Make local function ti_opp_supply_set_opp() static PM / OPP: Add ti-opp-supply driver dt-bindings: opp: Introduce ti-opp-supply bindings cpufreq: ti-cpufreq: Add support for multiple regulators cpufreq: ti-cpufreq: Convert to module_platform_driver cpufreq: Add DVFS support for Armada 37xx MAINTAINERS: add new entries for Armada 37xx cpufreq driver ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpufreq/Kconfig.arm88
-rw-r--r--drivers/cpufreq/Makefile9
-rw-r--r--drivers/cpufreq/arm_big_little.c23
-rw-r--r--drivers/cpufreq/armada-37xx-cpufreq.c241
-rw-r--r--drivers/cpufreq/cpufreq-dt-platdev.c8
-rw-r--r--drivers/cpufreq/cpufreq-dt.c27
-rw-r--r--drivers/cpufreq/cpufreq.c55
-rw-r--r--drivers/cpufreq/cpufreq_stats.c3
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c171
-rw-r--r--drivers/cpufreq/intel_pstate.c14
-rw-r--r--drivers/cpufreq/longhaul.c2
-rw-r--r--drivers/cpufreq/mediatek-cpufreq.c23
-rw-r--r--drivers/cpufreq/mvebu-cpufreq.c16
-rw-r--r--drivers/cpufreq/powernv-cpufreq.c143
-rw-r--r--drivers/cpufreq/qoriq-cpufreq.c14
-rw-r--r--drivers/cpufreq/scpi-cpufreq.c193
-rw-r--r--drivers/cpufreq/ti-cpufreq.c51
-rw-r--r--drivers/firmware/psci_checker.c46
-rw-r--r--drivers/opp/Makefile1
-rw-r--r--drivers/opp/ti-opp-supply.c425
-rw-r--r--drivers/thermal/cpu_cooling.c201
21 files changed, 1253 insertions, 501 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index bdce4488ded1..3a88e33b0cfe 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -2,6 +2,29 @@
# ARM CPU Frequency scaling drivers
#
+config ACPI_CPPC_CPUFREQ
+ tristate "CPUFreq driver based on the ACPI CPPC spec"
+ depends on ACPI_PROCESSOR
+ select ACPI_CPPC_LIB
+ help
+ This adds a CPUFreq driver which uses CPPC methods
+ as described in the ACPIv5.1 spec. CPPC stands for
+ Collaborative Processor Performance Controls. It
+ is based on an abstract continuous scale of CPU
+ performance values which allows the remote power
+ processor to flexibly optimize for power and
+ performance. CPPC relies on power management firmware
+ support for its operation.
+
+ If in doubt, say N.
+
+config ARM_ARMADA_37XX_CPUFREQ
+ tristate "Armada 37xx CPUFreq support"
+ depends on ARCH_MVEBU
+ help
+ This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
+ The Armada 37xx PMU supports 4 frequency and VDD levels.
+
# big LITTLE core layer and glue drivers
config ARM_BIG_LITTLE_CPUFREQ
tristate "Generic ARM big LITTLE CPUfreq driver"
@@ -12,6 +35,30 @@ config ARM_BIG_LITTLE_CPUFREQ
help
This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
+config ARM_DT_BL_CPUFREQ
+ tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
+ depends on ARM_BIG_LITTLE_CPUFREQ && OF
+ help
+ This enables probing via DT for Generic CPUfreq driver for ARM
+ big.LITTLE platform. This gets frequency tables from DT.
+
+config ARM_SCPI_CPUFREQ
+ tristate "SCPI based CPUfreq driver"
+ depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
+ help
+ This adds the CPUfreq driver support for ARM big.LITTLE platforms
+ using SCPI protocol for CPU power management.
+
+ This driver uses SCPI Message Protocol driver to interact with the
+ firmware providing the CPU DVFS functionality.
+
+config ARM_VEXPRESS_SPC_CPUFREQ
+ tristate "Versatile Express SPC based CPUfreq driver"
+ depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
+ help
+ This add the CPUfreq driver support for Versatile Express
+ big.LITTLE platforms using SPC for power management.
+
config ARM_BRCMSTB_AVS_CPUFREQ
tristate "Broadcom STB AVS CPUfreq driver"
depends on ARCH_BRCMSTB || COMPILE_TEST
@@ -33,20 +80,6 @@ config ARM_BRCMSTB_AVS_CPUFREQ_DEBUG
If in doubt, say N.
-config ARM_DT_BL_CPUFREQ
- tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
- depends on ARM_BIG_LITTLE_CPUFREQ && OF
- help
- This enables probing via DT for Generic CPUfreq driver for ARM
- big.LITTLE platform. This gets frequency tables from DT.
-
-config ARM_VEXPRESS_SPC_CPUFREQ
- tristate "Versatile Express SPC based CPUfreq driver"
- depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
- help
- This add the CPUfreq driver support for Versatile Express
- big.LITTLE platforms using SPC for power management.
-
config ARM_EXYNOS5440_CPUFREQ
tristate "SAMSUNG EXYNOS5440"
depends on SOC_EXYNOS5440
@@ -205,16 +238,6 @@ config ARM_SA1100_CPUFREQ
config ARM_SA1110_CPUFREQ
bool
-config ARM_SCPI_CPUFREQ
- tristate "SCPI based CPUfreq driver"
- depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
- help
- This adds the CPUfreq driver support for ARM big.LITTLE platforms
- using SCPI protocol for CPU power management.
-
- This driver uses SCPI Message Protocol driver to interact with the
- firmware providing the CPU DVFS functionality.
-
config ARM_SPEAR_CPUFREQ
bool "SPEAr CPUFreq support"
depends on PLAT_SPEAR
@@ -275,20 +298,3 @@ config ARM_PXA2xx_CPUFREQ
This add the CPUFreq driver support for Intel PXA2xx SOCs.
If in doubt, say N.
-
-config ACPI_CPPC_CPUFREQ
- tristate "CPUFreq driver based on the ACPI CPPC spec"
- depends on ACPI_PROCESSOR
- select ACPI_CPPC_LIB
- default n
- help
- This adds a CPUFreq driver which uses CPPC methods
- as described in the ACPIv5.1 spec. CPPC stands for
- Collaborative Processor Performance Controls. It
- is based on an abstract continuous scale of CPU
- performance values which allows the remote power
- processor to flexibly optimize for power and
- performance. CPPC relies on power management firmware
- support for its operation.
-
- If in doubt, say N.
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 812f9e0d01a3..e07715ce8844 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -52,23 +52,26 @@ obj-$(CONFIG_ARM_BIG_LITTLE_CPUFREQ) += arm_big_little.o
# LITTLE drivers, so that it is probed last.
obj-$(CONFIG_ARM_DT_BL_CPUFREQ) += arm_big_little_dt.o
+obj-$(CONFIG_ARM_ARMADA_37XX_CPUFREQ) += armada-37xx-cpufreq.o
obj-$(CONFIG_ARM_BRCMSTB_AVS_CPUFREQ) += brcmstb-avs-cpufreq.o
+obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o
obj-$(CONFIG_ARCH_DAVINCI) += davinci-cpufreq.o
obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ) += exynos5440-cpufreq.o
obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ) += highbank-cpufreq.o
obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o
obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o
obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ) += mediatek-cpufreq.o
+obj-$(CONFIG_MACH_MVEBU_V7) += mvebu-cpufreq.o
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_S3C24XX_CPUFREQ) += s3c24xx-cpufreq.o
-obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o
obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o
obj-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o
obj-$(CONFIG_ARM_S3C2416_CPUFREQ) += s3c2416-cpufreq.o
obj-$(CONFIG_ARM_S3C2440_CPUFREQ) += s3c2440-cpufreq.o
obj-$(CONFIG_ARM_S3C64XX_CPUFREQ) += s3c64xx-cpufreq.o
+obj-$(CONFIG_ARM_S3C24XX_CPUFREQ) += s3c24xx-cpufreq.o
+obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o
obj-$(CONFIG_ARM_S5PV210_CPUFREQ) += s5pv210-cpufreq.o
obj-$(CONFIG_ARM_SA1100_CPUFREQ) += sa1100-cpufreq.o
obj-$(CONFIG_ARM_SA1110_CPUFREQ) += sa1110-cpufreq.o
@@ -81,8 +84,6 @@ obj-$(CONFIG_ARM_TEGRA124_CPUFREQ) += tegra124-cpufreq.o
obj-$(CONFIG_ARM_TEGRA186_CPUFREQ) += tegra186-cpufreq.o
obj-$(CONFIG_ARM_TI_CPUFREQ) += ti-cpufreq.o
obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ) += vexpress-spc-cpufreq.o
-obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o
-obj-$(CONFIG_MACH_MVEBU_V7) += mvebu-cpufreq.o
##################################################################################
diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c
index 65ec5f01aa8d..c56b57dcfda5 100644
--- a/drivers/cpufreq/arm_big_little.c
+++ b/drivers/cpufreq/arm_big_little.c
@@ -526,34 +526,13 @@ static int bL_cpufreq_exit(struct cpufreq_policy *policy)
static void bL_cpufreq_ready(struct cpufreq_policy *policy)
{
- struct device *cpu_dev = get_cpu_device(policy->cpu);
int cur_cluster = cpu_to_cluster(policy->cpu);
- struct device_node *np;
/* Do not register a cpu_cooling device if we are in IKS mode */
if (cur_cluster >= MAX_CLUSTERS)
return;
- np = of_node_get(cpu_dev->of_node);
- if (WARN_ON(!np))
- return;
-
- if (of_find_property(np, "#cooling-cells", NULL)) {
- u32 power_coefficient = 0;
-
- of_property_read_u32(np, "dynamic-power-coefficient",
- &power_coefficient);
-
- cdev[cur_cluster] = of_cpufreq_power_cooling_register(np,
- policy, power_coefficient, NULL);
- if (IS_ERR(cdev[cur_cluster])) {
- dev_err(cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(cdev[cur_cluster]));
- cdev[cur_cluster] = NULL;
- }
- }
- of_node_put(np);
+ cdev[cur_cluster] = of_cpufreq_cooling_register(policy);
}
static struct cpufreq_driver bL_cpufreq_driver = {
diff --git a/drivers/cpufreq/armada-37xx-cpufreq.c b/drivers/cpufreq/armada-37xx-cpufreq.c
new file mode 100644
index 000000000000..c6ebc88a7d8d
--- /dev/null
+++ b/drivers/cpufreq/armada-37xx-cpufreq.c
@@ -0,0 +1,241 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * CPU frequency scaling support for Armada 37xx platform.
+ *
+ * Copyright (C) 2017 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/cpu.h>
+#include <linux/cpufreq.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+/* Power management in North Bridge register set */
+#define ARMADA_37XX_NB_L0L1 0x18
+#define ARMADA_37XX_NB_L2L3 0x1C
+#define ARMADA_37XX_NB_TBG_DIV_OFF 13
+#define ARMADA_37XX_NB_TBG_DIV_MASK 0x7
+#define ARMADA_37XX_NB_CLK_SEL_OFF 11
+#define ARMADA_37XX_NB_CLK_SEL_MASK 0x1
+#define ARMADA_37XX_NB_CLK_SEL_TBG 0x1
+#define ARMADA_37XX_NB_TBG_SEL_OFF 9
+#define ARMADA_37XX_NB_TBG_SEL_MASK 0x3
+#define ARMADA_37XX_NB_VDD_SEL_OFF 6
+#define ARMADA_37XX_NB_VDD_SEL_MASK 0x3
+#define ARMADA_37XX_NB_CONFIG_SHIFT 16
+#define ARMADA_37XX_NB_DYN_MOD 0x24
+#define ARMADA_37XX_NB_CLK_SEL_EN BIT(26)
+#define ARMADA_37XX_NB_TBG_EN BIT(28)
+#define ARMADA_37XX_NB_DIV_EN BIT(29)
+#define ARMADA_37XX_NB_VDD_EN BIT(30)
+#define ARMADA_37XX_NB_DFS_EN BIT(31)
+#define ARMADA_37XX_NB_CPU_LOAD 0x30
+#define ARMADA_37XX_NB_CPU_LOAD_MASK 0x3
+#define ARMADA_37XX_DVFS_LOAD_0 0
+#define ARMADA_37XX_DVFS_LOAD_1 1
+#define ARMADA_37XX_DVFS_LOAD_2 2
+#define ARMADA_37XX_DVFS_LOAD_3 3
+
+/*
+ * On Armada 37xx the Power management manages 4 level of CPU load,
+ * each level can be associated with a CPU clock source, a CPU
+ * divider, a VDD level, etc...
+ */
+#define LOAD_LEVEL_NR 4
+
+struct armada_37xx_dvfs {
+ u32 cpu_freq_max;
+ u8 divider[LOAD_LEVEL_NR];
+};
+
+static struct armada_37xx_dvfs armada_37xx_dvfs[] = {
+ {.cpu_freq_max = 1200*1000*1000, .divider = {1, 2, 4, 6} },
+ {.cpu_freq_max = 1000*1000*1000, .divider = {1, 2, 4, 5} },
+ {.cpu_freq_max = 800*1000*1000, .divider = {1, 2, 3, 4} },
+ {.cpu_freq_max = 600*1000*1000, .divider = {2, 4, 5, 6} },
+};
+
+static struct armada_37xx_dvfs *armada_37xx_cpu_freq_info_get(u32 freq)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(armada_37xx_dvfs); i++) {
+ if (freq == armada_37xx_dvfs[i].cpu_freq_max)
+ return &armada_37xx_dvfs[i];
+ }
+
+ pr_err("Unsupported CPU frequency %d MHz\n", freq/1000000);
+ return NULL;
+}
+
+/*
+ * Setup the four level managed by the hardware. Once the four level
+ * will be configured then the DVFS will be enabled.
+ */
+static void __init armada37xx_cpufreq_dvfs_setup(struct regmap *base,
+ struct clk *clk, u8 *divider)
+{
+ int load_lvl;
+ struct clk *parent;
+
+ for (load_lvl = 0; load_lvl < LOAD_LEVEL_NR; load_lvl++) {
+ unsigned int reg, mask, val, offset = 0;
+
+ if (load_lvl <= ARMADA_37XX_DVFS_LOAD_1)
+ reg = ARMADA_37XX_NB_L0L1;
+ else
+ reg = ARMADA_37XX_NB_L2L3;
+
+ if (load_lvl == ARMADA_37XX_DVFS_LOAD_0 ||
+ load_lvl == ARMADA_37XX_DVFS_LOAD_2)
+ offset += ARMADA_37XX_NB_CONFIG_SHIFT;
+
+ /* Set cpu clock source, for all the level we use TBG */
+ val = ARMADA_37XX_NB_CLK_SEL_TBG << ARMADA_37XX_NB_CLK_SEL_OFF;
+ mask = (ARMADA_37XX_NB_CLK_SEL_MASK
+ << ARMADA_37XX_NB_CLK_SEL_OFF);
+
+ /*
+ * Set cpu divider based on the pre-computed array in
+ * order to have balanced step.
+ */
+ val |= divider[load_lvl] << ARMADA_37XX_NB_TBG_DIV_OFF;
+ mask |= (ARMADA_37XX_NB_TBG_DIV_MASK
+ << ARMADA_37XX_NB_TBG_DIV_OFF);
+
+ /* Set VDD divider which is actually the load level. */
+ val |= load_lvl << ARMADA_37XX_NB_VDD_SEL_OFF;
+ mask |= (ARMADA_37XX_NB_VDD_SEL_MASK
+ << ARMADA_37XX_NB_VDD_SEL_OFF);
+
+ val <<= offset;
+ mask <<= offset;
+
+ regmap_update_bits(base, reg, mask, val);
+ }
+
+ /*
+ * Set cpu clock source, for all the level we keep the same
+ * clock source that the one already configured. For this one
+ * we need to use the clock framework
+ */
+ parent = clk_get_parent(clk);
+ clk_set_parent(clk, parent);
+}
+
+static void __init armada37xx_cpufreq_disable_dvfs(struct regmap *base)
+{
+ unsigned int reg = ARMADA_37XX_NB_DYN_MOD,
+ mask = ARMADA_37XX_NB_DFS_EN;
+
+ regmap_update_bits(base, reg, mask, 0);
+}
+
+static void __init armada37xx_cpufreq_enable_dvfs(struct regmap *base)
+{
+ unsigned int val, reg = ARMADA_37XX_NB_CPU_LOAD,
+ mask = ARMADA_37XX_NB_CPU_LOAD_MASK;
+
+ /* Start with the highest load (0) */
+ val = ARMADA_37XX_DVFS_LOAD_0;
+ regmap_update_bits(base, reg, mask, val);
+
+ /* Now enable DVFS for the CPUs */
+ reg = ARMADA_37XX_NB_DYN_MOD;
+ mask = ARMADA_37XX_NB_CLK_SEL_EN | ARMADA_37XX_NB_TBG_EN |
+ ARMADA_37XX_NB_DIV_EN | ARMADA_37XX_NB_VDD_EN |
+ ARMADA_37XX_NB_DFS_EN;
+
+ regmap_update_bits(base, reg, mask, mask);
+}
+
+static int __init armada37xx_cpufreq_driver_init(void)
+{
+ struct armada_37xx_dvfs *dvfs;
+ struct platform_device *pdev;
+ unsigned int cur_frequency;
+ struct regmap *nb_pm_base;
+ struct device *cpu_dev;
+ int load_lvl, ret;
+ struct clk *clk;
+
+ nb_pm_base =
+ syscon_regmap_lookup_by_compatible("marvell,armada-3700-nb-pm");
+
+ if (IS_ERR(nb_pm_base))
+ return -ENODEV;
+
+ /* Before doing any configuration on the DVFS first, disable it */
+ armada37xx_cpufreq_disable_dvfs(nb_pm_base);
+
+ /*
+ * On CPU 0 register the operating points supported (which are
+ * the nominal CPU frequency and full integer divisions of
+ * it).
+ */
+ cpu_dev = get_cpu_device(0);
+ if (!cpu_dev) {
+ dev_err(cpu_dev, "Cannot get CPU\n");
+ return -ENODEV;
+ }
+
+ clk = clk_get(cpu_dev, 0);
+ if (IS_ERR(clk)) {
+ dev_err(cpu_dev, "Cannot get clock for CPU0\n");
+ return PTR_ERR(clk);
+ }
+
+ /* Get nominal (current) CPU frequency */
+ cur_frequency = clk_get_rate(clk);
+ if (!cur_frequency) {
+ dev_err(cpu_dev, "Failed to get clock rate for CPU\n");
+ return -EINVAL;
+ }
+
+ dvfs = armada_37xx_cpu_freq_info_get(cur_frequency);
+ if (!dvfs)
+ return -EINVAL;
+
+ armada37xx_cpufreq_dvfs_setup(nb_pm_base, clk, dvfs->divider);
+
+ for (load_lvl = ARMADA_37XX_DVFS_LOAD_0; load_lvl < LOAD_LEVEL_NR;
+ load_lvl++) {
+ unsigned long freq = cur_frequency / dvfs->divider[load_lvl];
+
+ ret = dev_pm_opp_add(cpu_dev, freq, 0);
+ if (ret) {
+ /* clean-up the already added opp before leaving */
+ while (load_lvl-- > ARMADA_37XX_DVFS_LOAD_0) {
+ freq = cur_frequency / dvfs->divider[load_lvl];
+ dev_pm_opp_remove(cpu_dev, freq);
+ }
+ return ret;
+ }
+ }
+
+ /* Now that everything is setup, enable the DVFS at hardware level */
+ armada37xx_cpufreq_enable_dvfs(nb_pm_base);
+
+ pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
+
+ return PTR_ERR_OR_ZERO(pdev);
+}
+/* late_initcall, to guarantee the driver is loaded after A37xx clock driver */
+late_initcall(armada37xx_cpufreq_driver_init);
+
+MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
+MODULE_DESCRIPTION("Armada 37xx cpufreq driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index ecc56e26f8f6..3b585e4bfac5 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -108,6 +108,14 @@ static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "marvell,armadaxp", },
+ { .compatible = "mediatek,mt2701", },
+ { .compatible = "mediatek,mt2712", },
+ { .compatible = "mediatek,mt7622", },
+ { .compatible = "mediatek,mt7623", },
+ { .compatible = "mediatek,mt817x", },
+ { .compatible = "mediatek,mt8173", },
+ { .compatible = "mediatek,mt8176", },
+
{ .compatible = "nvidia,tegra124", },
{ .compatible = "st,stih407", },
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 545946ad0752..de3d104c25d7 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -319,33 +319,8 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
static void cpufreq_ready(struct cpufreq_policy *policy)
{
struct private_data *priv = policy->driver_data;
- struct device_node *np = of_node_get(priv->cpu_dev->of_node);
- if (WARN_ON(!np))
- return;
-
- /*
- * For now, just loading the cooling device;
- * thermal DT code takes care of matching them.
- */
- if (of_find_property(np, "#cooling-cells", NULL)) {
- u32 power_coefficient = 0;
-
- of_property_read_u32(np, "dynamic-power-coefficient",
- &power_coefficient);
-
- priv->cdev = of_cpufreq_power_cooling_register(np,
- policy, power_coefficient, NULL);
- if (IS_ERR(priv->cdev)) {
- dev_err(priv->cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(priv->cdev));
-
- priv->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ priv->cdev = of_cpufreq_cooling_register(policy);
}
static struct cpufreq_driver dt_cpufreq_driver = {
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 41d148af7748..421f318c0e66 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -601,19 +601,18 @@ static struct cpufreq_governor *find_governor(const char *str_governor)
/**
* cpufreq_parse_governor - parse a governor string
*/
-static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
- struct cpufreq_governor **governor)
+static int cpufreq_parse_governor(char *str_governor,
+ struct cpufreq_policy *policy)
{
- int err = -EINVAL;
-
if (cpufreq_driver->setpolicy) {
if (!strncasecmp(str_governor, "performance", CPUFREQ_NAME_LEN)) {
- *policy = CPUFREQ_POLICY_PERFORMANCE;
- err = 0;
- } else if (!strncasecmp(str_governor, "powersave",
- CPUFREQ_NAME_LEN)) {
- *policy = CPUFREQ_POLICY_POWERSAVE;
- err = 0;
+ policy->policy = CPUFREQ_POLICY_PERFORMANCE;
+ return 0;
+ }
+
+ if (!strncasecmp(str_governor, "powersave", CPUFREQ_NAME_LEN)) {
+ policy->policy = CPUFREQ_POLICY_POWERSAVE;
+ return 0;
}
} else {
struct cpufreq_governor *t;
@@ -621,26 +620,31 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
mutex_lock(&cpufreq_governor_mutex);
t = find_governor(str_governor);
-
- if (t == NULL) {
+ if (!t) {
int ret;
mutex_unlock(&cpufreq_governor_mutex);
+
ret = request_module("cpufreq_%s", str_governor);
- mutex_lock(&cpufreq_governor_mutex);
+ if (ret)
+ return -EINVAL;
- if (ret == 0)
- t = find_governor(str_governor);
- }
+ mutex_lock(&cpufreq_governor_mutex);
- if (t != NULL) {
- *governor = t;
- err = 0;
+ t = find_governor(str_governor);
}
+ if (t && !try_module_get(t->owner))
+ t = NULL;
mutex_unlock(&cpufreq_governor_mutex);
+
+ if (t) {
+ policy->governor = t;
+ return 0;
+ }
}
- return err;
+
+ return -EINVAL;
}
/**
@@ -760,11 +764,14 @@ static ssize_t store_scaling_governor(struct cpufreq_policy *policy,
if (ret != 1)
return -EINVAL;
- if (cpufreq_parse_governor(str_governor, &new_policy.policy,
- &new_policy.governor))
+ if (cpufreq_parse_governor(str_governor, &new_policy))
return -EINVAL;
ret = cpufreq_set_policy(policy, &new_policy);
+
+ if (new_policy.governor)
+ module_put(new_policy.governor->owner);
+
return ret ? ret : count;
}
@@ -1044,8 +1051,7 @@ static int cpufreq_init_policy(struct cpufreq_policy *policy)
if (policy->last_policy)
new_policy.policy = policy->last_policy;
else
- cpufreq_parse_governor(gov->name, &new_policy.policy,
- NULL);
+ cpufreq_parse_governor(gov->name, &new_policy);
}
/* set default policy */
return cpufreq_set_policy(policy, &new_policy);
@@ -2160,7 +2166,6 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor)
mutex_lock(&cpufreq_governor_mutex);
list_del(&governor->governor_list);
mutex_unlock(&cpufreq_governor_mutex);
- return;
}
EXPORT_SYMBOL_GPL(cpufreq_unregister_governor);
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 1e55b5790853..1572129844a5 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -27,7 +27,7 @@ struct cpufreq_stats {
unsigned int *trans_table;
};
-static int cpufreq_stats_update(struct cpufreq_stats *stats)
+static void cpufreq_stats_update(struct cpufreq_stats *stats)
{
unsigned long long cur_time = get_jiffies_64();
@@ -35,7 +35,6 @@ static int cpufreq_stats_update(struct cpufreq_stats *stats)
stats->time_in_state[stats->last_index] += cur_time - stats->last_time;
stats->last_time = cur_time;
spin_unlock(&cpufreq_stats_lock);
- return 0;
}
static void cpufreq_stats_clear_table(struct cpufreq_stats *stats)
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index d9b2c2de49c4..741f22e5cee3 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -25,15 +25,29 @@ static struct regulator *arm_reg;
static struct regulator *pu_reg;
static struct regulator *soc_reg;
-static struct clk *arm_clk;
-static struct clk *pll1_sys_clk;
-static struct clk *pll1_sw_clk;
-static struct clk *step_clk;
-static struct clk *pll2_pfd2_396m_clk;
-
-/* clk used by i.MX6UL */
-static struct clk *pll2_bus_clk;
-static struct clk *secondary_sel_clk;
+enum IMX6_CPUFREQ_CLKS {
+ ARM,
+ PLL1_SYS,
+ STEP,
+ PLL1_SW,
+ PLL2_PFD2_396M,
+ /* MX6UL requires two more clks */
+ PLL2_BUS,
+ SECONDARY_SEL,
+};
+#define IMX6Q_CPUFREQ_CLK_NUM 5
+#define IMX6UL_CPUFREQ_CLK_NUM 7
+
+static int num_clks;
+static struct clk_bulk_data clks[] = {
+ { .id = "arm" },
+ { .id = "pll1_sys" },
+ { .id = "step" },
+ { .id = "pll1_sw" },
+ { .id = "pll2_pfd2_396m" },
+ { .id = "pll2_bus" },
+ { .id = "secondary_sel" },
+};
static struct device *cpu_dev;
static bool free_opp;
@@ -53,7 +67,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
new_freq = freq_table[index].frequency;
freq_hz = new_freq * 1000;
- old_freq = clk_get_rate(arm_clk) / 1000;
+ old_freq = clk_get_rate(clks[ARM].clk) / 1000;
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_hz);
if (IS_ERR(opp)) {
@@ -112,29 +126,35 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
* voltage of 528MHz, so lower the CPU frequency to one
* half before changing CPU frequency.
*/
- clk_set_rate(arm_clk, (old_freq >> 1) * 1000);
- clk_set_parent(pll1_sw_clk, pll1_sys_clk);
- if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk))
- clk_set_parent(secondary_sel_clk, pll2_bus_clk);
+ clk_set_rate(clks[ARM].clk, (old_freq >> 1) * 1000);
+ clk_set_parent(clks[PLL1_SW].clk, clks[PLL1_SYS].clk);
+ if (freq_hz > clk_get_rate(clks[PLL2_PFD2_396M].clk))
+ clk_set_parent(clks[SECONDARY_SEL].clk,
+ clks[PLL2_BUS].clk);
else
- clk_set_parent(secondary_sel_clk, pll2_pfd2_396m_clk);
- clk_set_parent(step_clk, secondary_sel_clk);
- clk_set_parent(pll1_sw_clk, step_clk);
+ clk_set_parent(clks[SECONDARY_SEL].clk,
+ clks[PLL2_PFD2_396M].clk);
+ clk_set_parent(clks[STEP].clk, clks[SECONDARY_SEL].clk);
+ clk_set_parent(clks[PLL1_SW].clk, clks[STEP].clk);
+ if (freq_hz > clk_get_rate(clks[PLL2_BUS].clk)) {
+ clk_set_rate(clks[PLL1_SYS].clk, new_freq * 1000);
+ clk_set_parent(clks[PLL1_SW].clk, clks[PLL1_SYS].clk);
+ }
} else {
- clk_set_parent(step_clk, pll2_pfd2_396m_clk);
- clk_set_parent(pll1_sw_clk, step_clk);
- if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk)) {
- clk_set_rate(pll1_sys_clk, new_freq * 1000);
- clk_set_parent(pll1_sw_clk, pll1_sys_clk);
+ clk_set_parent(clks[STEP].clk, clks[PLL2_PFD2_396M].clk);
+ clk_set_parent(clks[PLL1_SW].clk, clks[STEP].clk);
+ if (freq_hz > clk_get_rate(clks[PLL2_PFD2_396M].clk)) {
+ clk_set_rate(clks[PLL1_SYS].clk, new_freq * 1000);
+ clk_set_parent(clks[PLL1_SW].clk, clks[PLL1_SYS].clk);
} else {
/* pll1_sys needs to be enabled for divider rate change to work. */
pll1_sys_temp_enabled = true;
- clk_prepare_enable(pll1_sys_clk);
+ clk_prepare_enable(clks[PLL1_SYS].clk);
}
}
/* Ensure the arm clock divider is what we expect */
- ret = clk_set_rate(arm_clk, new_freq * 1000);
+ ret = clk_set_rate(clks[ARM].clk, new_freq * 1000);
if (ret) {
dev_err(cpu_dev, "failed to set clock rate: %d\n", ret);
regulator_set_voltage_tol(arm_reg, volt_old, 0);
@@ -143,7 +163,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
/* PLL1 is only needed until after ARM-PODF is set. */
if (pll1_sys_temp_enabled)
- clk_disable_unprepare(pll1_sys_clk);
+ clk_disable_unprepare(clks[PLL1_SYS].clk);
/* scaling down? scale voltage after frequency */
if (new_freq < old_freq) {
@@ -174,7 +194,7 @@ static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
- policy->clk = arm_clk;
+ policy->clk = clks[ARM].clk;
ret = cpufreq_generic_init(policy, freq_table, transition_latency);
policy->suspend_freq = policy->max;
@@ -244,6 +264,43 @@ put_node:
of_node_put(np);
}
+#define OCOTP_CFG3_6UL_SPEED_696MHZ 0x2
+
+static void imx6ul_opp_check_speed_grading(struct device *dev)
+{
+ struct device_node *np;
+ void __iomem *base;
+ u32 val;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx6ul-ocotp");
+ if (!np)
+ return;
+
+ base = of_iomap(np, 0);
+ if (!base) {
+ dev_err(dev, "failed to map ocotp\n");
+ goto put_node;
+ }
+
+ /*
+ * Speed GRADING[1:0] defines the max speed of ARM:
+ * 2b'00: Reserved;
+ * 2b'01: 528000000Hz;
+ * 2b'10: 696000000Hz;
+ * 2b'11: Reserved;
+ * We need to set the max speed of ARM according to fuse map.
+ */
+ val = readl_relaxed(base + OCOTP_CFG3);
+ val >>= OCOTP_CFG3_SPEED_SHIFT;
+ val &= 0x3;
+ if (val != OCOTP_CFG3_6UL_SPEED_696MHZ)
+ if (dev_pm_opp_disable(dev, 696000000))
+ dev_warn(dev, "failed to disable 696MHz OPP\n");
+ iounmap(base);
+put_node:
+ of_node_put(np);
+}
+
static int imx6q_cpufreq_probe(struct platform_device *pdev)
{
struct device_node *np;
@@ -266,28 +323,15 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
return -ENOENT;
}
- arm_clk = clk_get(cpu_dev, "arm");
- pll1_sys_clk = clk_get(cpu_dev, "pll1_sys");
- pll1_sw_clk = clk_get(cpu_dev, "pll1_sw");
- step_clk = clk_get(cpu_dev, "step");
- pll2_pfd2_396m_clk = clk_get(cpu_dev, "pll2_pfd2_396m");
- if (IS_ERR(arm_clk) || IS_ERR(pll1_sys_clk) || IS_ERR(pll1_sw_clk) ||
- IS_ERR(step_clk) || IS_ERR(pll2_pfd2_396m_clk)) {
- dev_err(cpu_dev, "failed to get clocks\n");
- ret = -ENOENT;
- goto put_clk;
- }
-
if (of_machine_is_compatible("fsl,imx6ul") ||
- of_machine_is_compatible("fsl,imx6ull")) {
- pll2_bus_clk = clk_get(cpu_dev, "pll2_bus");
- secondary_sel_clk = clk_get(cpu_dev, "secondary_sel");
- if (IS_ERR(pll2_bus_clk) || IS_ERR(secondary_sel_clk)) {
- dev_err(cpu_dev, "failed to get clocks specific to imx6ul\n");
- ret = -ENOENT;
- goto put_clk;
- }
- }
+ of_machine_is_compatible("fsl,imx6ull"))
+ num_clks = IMX6UL_CPUFREQ_CLK_NUM;
+ else
+ num_clks = IMX6Q_CPUFREQ_CLK_NUM;
+
+ ret = clk_bulk_get(cpu_dev, num_clks, clks);
+ if (ret)
+ goto put_node;
arm_reg = regulator_get(cpu_dev, "arm");
pu_reg = regulator_get_optional(cpu_dev, "pu");
@@ -311,7 +355,10 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
goto put_reg;
}
- imx6q_opp_check_speed_grading(cpu_dev);
+ if (of_machine_is_compatible("fsl,imx6ul"))
+ imx6ul_opp_check_speed_grading(cpu_dev);
+ else
+ imx6q_opp_check_speed_grading(cpu_dev);
/* Because we have added the OPPs here, we must free them */
free_opp = true;
@@ -424,22 +471,11 @@ put_reg:
regulator_put(pu_reg);
if (!IS_ERR(soc_reg))
regulator_put(soc_reg);
-put_clk:
- if (!IS_ERR(arm_clk))
- clk_put(arm_clk);
- if (!IS_ERR(pll1_sys_clk))
- clk_put(pll1_sys_clk);
- if (!IS_ERR(pll1_sw_clk))
- clk_put(pll1_sw_clk);
- if (!IS_ERR(step_clk))
- clk_put(step_clk);
- if (!IS_ERR(pll2_pfd2_396m_clk))
- clk_put(pll2_pfd2_396m_clk);
- if (!IS_ERR(pll2_bus_clk))
- clk_put(pll2_bus_clk);
- if (!IS_ERR(secondary_sel_clk))
- clk_put(secondary_sel_clk);
+
+ clk_bulk_put(num_clks, clks);
+put_node:
of_node_put(np);
+
return ret;
}
@@ -453,13 +489,8 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
if (!IS_ERR(pu_reg))
regulator_put(pu_reg);
regulator_put(soc_reg);
- clk_put(arm_clk);
- clk_put(pll1_sys_clk);
- clk_put(pll1_sw_clk);
- clk_put(step_clk);
- clk_put(pll2_pfd2_396m_clk);
- clk_put(pll2_bus_clk);
- clk_put(secondary_sel_clk);
+
+ clk_bulk_put(num_clks, clks);
return 0;
}
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 93a0e88bef76..7edf7a0e5a96 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1595,15 +1595,6 @@ static const struct pstate_funcs knl_funcs = {
.get_val = core_get_val,
};
-static const struct pstate_funcs bxt_funcs = {
- .get_max = core_get_max_pstate,
- .get_max_physical = core_get_max_pstate_physical,
- .get_min = core_get_min_pstate,
- .get_turbo = core_get_turbo_pstate,
- .get_scaling = core_get_scaling,
- .get_val = core_get_val,
-};
-
#define ICPU(model, policy) \
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_APERFMPERF,\
(unsigned long)&policy }
@@ -1627,8 +1618,9 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
ICPU(INTEL_FAM6_BROADWELL_XEON_D, core_funcs),
ICPU(INTEL_FAM6_XEON_PHI_KNL, knl_funcs),
ICPU(INTEL_FAM6_XEON_PHI_KNM, knl_funcs),
- ICPU(INTEL_FAM6_ATOM_GOLDMONT, bxt_funcs),
- ICPU(INTEL_FAM6_ATOM_GEMINI_LAKE, bxt_funcs),
+ ICPU(INTEL_FAM6_ATOM_GOLDMONT, core_funcs),
+ ICPU(INTEL_FAM6_ATOM_GEMINI_LAKE, core_funcs),
+ ICPU(INTEL_FAM6_SKYLAKE_X, core_funcs),
{}
};
MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index c46a12df40dd..5faa37c5b091 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c
@@ -894,7 +894,7 @@ static int longhaul_cpu_init(struct cpufreq_policy *policy)
if ((longhaul_version != TYPE_LONGHAUL_V1) && (scale_voltage != 0))
longhaul_setup_voltagescaling();
- policy->cpuinfo.transition_latency = 200000; /* nsec */
+ policy->transition_delay_us = 200000; /* usec */
return cpufreq_table_validate_and_show(policy, longhaul_table);
}
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index e0d5090b303d..8c04dddd3c28 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -310,28 +310,8 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy,
static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
{
struct mtk_cpu_dvfs_info *info = policy->driver_data;
- struct device_node *np = of_node_get(info->cpu_dev->of_node);
- u32 capacitance = 0;
- if (WARN_ON(!np))
- return;
-
- if (of_find_property(np, "#cooling-cells", NULL)) {
- of_property_read_u32(np, DYNAMIC_POWER, &capacitance);
-
- info->cdev = of_cpufreq_power_cooling_register(np,
- policy, capacitance, NULL);
-
- if (IS_ERR(info->cdev)) {
- dev_err(info->cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(info->cdev));
-
- info->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ info->cdev = of_cpufreq_cooling_register(policy);
}
static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
@@ -574,6 +554,7 @@ static struct platform_driver mtk_cpufreq_platdrv = {
/* List of machines supported by this driver */
static const struct of_device_id mtk_cpufreq_machines[] __initconst = {
{ .compatible = "mediatek,mt2701", },
+ { .compatible = "mediatek,mt2712", },
{ .compatible = "mediatek,mt7622", },
{ .compatible = "mediatek,mt7623", },
{ .compatible = "mediatek,mt817x", },
diff --git a/drivers/cpufreq/mvebu-cpufreq.c b/drivers/cpufreq/mvebu-cpufreq.c
index ed915ee85dd9..31513bd42705 100644
--- a/drivers/cpufreq/mvebu-cpufreq.c
+++ b/drivers/cpufreq/mvebu-cpufreq.c
@@ -76,12 +76,6 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
return PTR_ERR(clk);
}
- /*
- * In case of a failure of dev_pm_opp_add(), we don't
- * bother with cleaning up the registered OPP (there's
- * no function to do so), and simply cancel the
- * registration of the cpufreq device.
- */
ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
if (ret) {
clk_put(clk);
@@ -91,7 +85,8 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
if (ret) {
clk_put(clk);
- return ret;
+ dev_err(cpu_dev, "Failed to register OPPs\n");
+ goto opp_register_failed;
}
ret = dev_pm_opp_set_sharing_cpus(cpu_dev,
@@ -99,9 +94,16 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
if (ret)
dev_err(cpu_dev, "%s: failed to mark OPPs as shared: %d\n",
__func__, ret);
+ clk_put(clk);
}
platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
return 0;
+
+opp_register_failed:
+ /* As registering has failed remove all the opp for all cpus */
+ dev_pm_opp_cpumask_remove_table(cpu_possible_mask);
+
+ return ret;
}
device_initcall(armada_xp_pmsu_cpufreq_init);
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index b6d7c4c98d0a..29cdec198657 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -29,6 +29,7 @@
#include <linux/reboot.h>
#include <linux/slab.h>
#include <linux/cpu.h>
+#include <linux/hashtable.h>
#include <trace/events/power.h>
#include <asm/cputhreads.h>
@@ -38,14 +39,13 @@
#include <asm/opal.h>
#include <linux/timer.h>
-#define POWERNV_MAX_PSTATES 256
+#define POWERNV_MAX_PSTATES_ORDER 8
+#define POWERNV_MAX_PSTATES (1UL << (POWERNV_MAX_PSTATES_ORDER))
#define PMSR_PSAFE_ENABLE (1UL << 30)
#define PMSR_SPR_EM_DISABLE (1UL << 31)
-#define PMSR_MAX(x) ((x >> 32) & 0xFF)
+#define MAX_PSTATE_SHIFT 32
#define LPSTATE_SHIFT 48
#define GPSTATE_SHIFT 56
-#define GET_LPSTATE(x) (((x) >> LPSTATE_SHIFT) & 0xFF)
-#define GET_GPSTATE(x) (((x) >> GPSTATE_SHIFT) & 0xFF)
#define MAX_RAMP_DOWN_TIME 5120
/*
@@ -94,6 +94,27 @@ struct global_pstate_info {
};
static struct cpufreq_frequency_table powernv_freqs[POWERNV_MAX_PSTATES+1];
+
+DEFINE_HASHTABLE(pstate_revmap, POWERNV_MAX_PSTATES_ORDER);
+/**
+ * struct pstate_idx_revmap_data: Entry in the hashmap pstate_revmap
+ * indexed by a function of pstate id.
+ *
+ * @pstate_id: pstate id for this entry.
+ *
+ * @cpufreq_table_idx: Index into the powernv_freqs
+ * cpufreq_frequency_table for frequency
+ * corresponding to pstate_id.
+ *
+ * @hentry: hlist_node that hooks this entry into the pstate_revmap
+ * hashtable
+ */
+struct pstate_idx_revmap_data {
+ u8 pstate_id;
+ unsigned int cpufreq_table_idx;
+ struct hlist_node hentry;
+};
+
static bool rebooting, throttled, occ_reset;
static const char * const throttle_reason[] = {
@@ -148,39 +169,56 @@ static struct powernv_pstate_info {
bool wof_enabled;
} powernv_pstate_info;
-/* Use following macros for conversions between pstate_id and index */
-static inline int idx_to_pstate(unsigned int i)
+static inline u8 extract_pstate(u64 pmsr_val, unsigned int shift)
+{
+ return ((pmsr_val >> shift) & 0xFF);
+}
+
+#define extract_local_pstate(x) extract_pstate(x, LPSTATE_SHIFT)
+#define extract_global_pstate(x) extract_pstate(x, GPSTATE_SHIFT)
+#define extract_max_pstate(x) extract_pstate(x, MAX_PSTATE_SHIFT)
+
+/* Use following functions for conversions between pstate_id and index */
+
+/**
+ * idx_to_pstate : Returns the pstate id corresponding to the
+ * frequency in the cpufreq frequency table
+ * powernv_freqs indexed by @i.
+ *
+ * If @i is out of bound, this will return the pstate
+ * corresponding to the nominal frequency.
+ */
+static inline u8 idx_to_pstate(unsigned int i)
{
if (unlikely(i >= powernv_pstate_info.nr_pstates)) {
- pr_warn_once("index %u is out of bound\n", i);
+ pr_warn_once("idx_to_pstate: index %u is out of bound\n", i);
return powernv_freqs[powernv_pstate_info.nominal].driver_data;
}
return powernv_freqs[i].driver_data;
}
-static inline unsigned int pstate_to_idx(int pstate)
+/**
+ * pstate_to_idx : Returns the index in the cpufreq frequencytable
+ * powernv_freqs for the frequency whose corresponding
+ * pstate id is @pstate.
+ *
+ * If no frequency corresponding to @pstate is found,
+ * this will return the index of the nominal
+ * frequency.
+ */
+static unsigned int pstate_to_idx(u8 pstate)
{
- int min = powernv_freqs[powernv_pstate_info.min].driver_data;
- int max = powernv_freqs[powernv_pstate_info.max].driver_data;
+ unsigned int key = pstate % POWERNV_MAX_PSTATES;
+ struct pstate_idx_revmap_data *revmap_data;
- if (min > 0) {
- if (unlikely((pstate < max) || (pstate > min))) {
- pr_warn_once("pstate %d is out of bound\n", pstate);
- return powernv_pstate_info.nominal;
- }
- } else {
- if (unlikely((pstate > max) || (pstate < min))) {
- pr_warn_once("pstate %d is out of bound\n", pstate);
- return powernv_pstate_info.nominal;
- }
+ hash_for_each_possible(pstate_revmap, revmap_data, hentry, key) {
+ if (revmap_data->pstate_id == pstate)
+ return revmap_data->cpufreq_table_idx;
}
- /*
- * abs() is deliberately used so that is works with
- * both monotonically increasing and decreasing
- * pstate values
- */
- return abs(pstate - idx_to_pstate(powernv_pstate_info.max));
+
+ pr_warn_once("pstate_to_idx: pstate 0x%x not found\n", pstate);
+ return powernv_pstate_info.nominal;
}
static inline void reset_gpstates(struct cpufreq_policy *policy)
@@ -247,7 +285,7 @@ static int init_powernv_pstates(void)
powernv_pstate_info.wof_enabled = true;
next:
- pr_info("cpufreq pstate min %d nominal %d max %d\n", pstate_min,
+ pr_info("cpufreq pstate min 0x%x nominal 0x%x max 0x%x\n", pstate_min,
pstate_nominal, pstate_max);
pr_info("Workload Optimized Frequency is %s in the platform\n",
(powernv_pstate_info.wof_enabled) ? "enabled" : "disabled");
@@ -278,19 +316,30 @@ next:
powernv_pstate_info.nr_pstates = nr_pstates;
pr_debug("NR PStates %d\n", nr_pstates);
+
for (i = 0; i < nr_pstates; i++) {
u32 id = be32_to_cpu(pstate_ids[i]);
u32 freq = be32_to_cpu(pstate_freqs[i]);
+ struct pstate_idx_revmap_data *revmap_data;
+ unsigned int key;
pr_debug("PState id %d freq %d MHz\n", id, freq);
powernv_freqs[i].frequency = freq * 1000; /* kHz */
- powernv_freqs[i].driver_data = id;
+ powernv_freqs[i].driver_data = id & 0xFF;
+
+ revmap_data = (struct pstate_idx_revmap_data *)
+ kmalloc(sizeof(*revmap_data), GFP_KERNEL);
+
+ revmap_data->pstate_id = id & 0xFF;
+ revmap_data->cpufreq_table_idx = i;
+ key = (revmap_data->pstate_id) % POWERNV_MAX_PSTATES;
+ hash_add(pstate_revmap, &revmap_data->hentry, key);
if (id == pstate_max)
powernv_pstate_info.max = i;
- else if (id == pstate_nominal)
+ if (id == pstate_nominal)
powernv_pstate_info.nominal = i;
- else if (id == pstate_min)
+ if (id == pstate_min)
powernv_pstate_info.min = i;
if (powernv_pstate_info.wof_enabled && id == pstate_turbo) {
@@ -307,14 +356,13 @@ next:
}
/* Returns the CPU frequency corresponding to the pstate_id. */
-static unsigned int pstate_id_to_freq(int pstate_id)
+static unsigned int pstate_id_to_freq(u8 pstate_id)
{
int i;
i = pstate_to_idx(pstate_id);
if (i >= powernv_pstate_info.nr_pstates || i < 0) {
- pr_warn("PState id %d outside of PState table, "
- "reporting nominal id %d instead\n",
+ pr_warn("PState id 0x%x outside of PState table, reporting nominal id 0x%x instead\n",
pstate_id, idx_to_pstate(powernv_pstate_info.nominal));
i = powernv_pstate_info.nominal;
}
@@ -420,8 +468,8 @@ static inline void set_pmspr(unsigned long sprn, unsigned long val)
*/
struct powernv_smp_call_data {
unsigned int freq;
- int pstate_id;
- int gpstate_id;
+ u8 pstate_id;
+ u8 gpstate_id;
};
/*
@@ -438,22 +486,15 @@ struct powernv_smp_call_data {
static void powernv_read_cpu_freq(void *arg)
{
unsigned long pmspr_val;
- s8 local_pstate_id;
struct powernv_smp_call_data *freq_data = arg;
pmspr_val = get_pmspr(SPRN_PMSR);
-
- /*
- * The local pstate id corresponds bits 48..55 in the PMSR.
- * Note: Watch out for the sign!
- */
- local_pstate_id = (pmspr_val >> 48) & 0xFF;
- freq_data->pstate_id = local_pstate_id;
+ freq_data->pstate_id = extract_local_pstate(pmspr_val);
freq_data->freq = pstate_id_to_freq(freq_data->pstate_id);
- pr_debug("cpu %d pmsr %016lX pstate_id %d frequency %d kHz\n",
- raw_smp_processor_id(), pmspr_val, freq_data->pstate_id,
- freq_data->freq);
+ pr_debug("cpu %d pmsr %016lX pstate_id 0x%x frequency %d kHz\n",
+ raw_smp_processor_id(), pmspr_val, freq_data->pstate_id,
+ freq_data->freq);
}
/*
@@ -515,21 +556,21 @@ static void powernv_cpufreq_throttle_check(void *data)
struct chip *chip;
unsigned int cpu = smp_processor_id();
unsigned long pmsr;
- int pmsr_pmax;
+ u8 pmsr_pmax;
unsigned int pmsr_pmax_idx;
pmsr = get_pmspr(SPRN_PMSR);
chip = this_cpu_read(chip_info);
/* Check for Pmax Capping */
- pmsr_pmax = (s8)PMSR_MAX(pmsr);
+ pmsr_pmax = extract_max_pstate(pmsr);
pmsr_pmax_idx = pstate_to_idx(pmsr_pmax);
if (pmsr_pmax_idx != powernv_pstate_info.max) {
if (chip->throttled)
goto next;
chip->throttled = true;
if (pmsr_pmax_idx > powernv_pstate_info.nominal) {
- pr_warn_once("CPU %d on Chip %u has Pmax(%d) reduced below nominal frequency(%d)\n",
+ pr_warn_once("CPU %d on Chip %u has Pmax(0x%x) reduced below that of nominal frequency(0x%x)\n",
cpu, chip->id, pmsr_pmax,
idx_to_pstate(powernv_pstate_info.nominal));
chip->throttle_sub_turbo++;
@@ -645,8 +686,8 @@ void gpstate_timer_handler(struct timer_list *t)
* value. Hence, read from PMCR to get correct data.
*/
val = get_pmspr(SPRN_PMCR);
- freq_data.gpstate_id = (s8)GET_GPSTATE(val);
- freq_data.pstate_id = (s8)GET_LPSTATE(val);
+ freq_data.gpstate_id = extract_global_pstate(val);
+ freq_data.pstate_id = extract_local_pstate(val);
if (freq_data.gpstate_id == freq_data.pstate_id) {
reset_gpstates(policy);
spin_unlock(&gpstates->gpstate_lock);
diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c
index 4ada55b8856e..0562761a3dec 100644
--- a/drivers/cpufreq/qoriq-cpufreq.c
+++ b/drivers/cpufreq/qoriq-cpufreq.c
@@ -275,20 +275,8 @@ static int qoriq_cpufreq_target(struct cpufreq_policy *policy,
static void qoriq_cpufreq_ready(struct cpufreq_policy *policy)
{
struct cpu_data *cpud = policy->driver_data;
- struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
- if (of_find_property(np, "#cooling-cells", NULL)) {
- cpud->cdev = of_cpufreq_cooling_register(np, policy);
-
- if (IS_ERR(cpud->cdev) && PTR_ERR(cpud->cdev) != -ENOSYS) {
- pr_err("cpu%d is not running as cooling device: %ld\n",
- policy->cpu, PTR_ERR(cpud->cdev));
-
- cpud->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ cpud->cdev = of_cpufreq_cooling_register(policy);
}
static struct cpufreq_driver qoriq_cpufreq_driver = {
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index 05d299052c5c..247fcbfa4cb5 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -18,27 +18,89 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/clk.h>
#include <linux/cpu.h>
#include <linux/cpufreq.h>
+#include <linux/cpumask.h>
+#include <linux/cpu_cooling.h>
+#include <linux/export.h>
#include <linux/module.h>
-#include <linux/platform_device.h>
+#include <linux/of_platform.h>
#include <linux/pm_opp.h>
#include <linux/scpi_protocol.h>
+#include <linux/slab.h>
#include <linux/types.h>
-#include "arm_big_little.h"
+struct scpi_data {
+ struct clk *clk;
+ struct device *cpu_dev;
+ struct thermal_cooling_device *cdev;
+};
static struct scpi_ops *scpi_ops;
-static int scpi_get_transition_latency(struct device *cpu_dev)
+static unsigned int scpi_cpufreq_get_rate(unsigned int cpu)
+{
+ struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu);
+ struct scpi_data *priv = policy->driver_data;
+ unsigned long rate = clk_get_rate(priv->clk);
+
+ return rate / 1000;
+}
+
+static int
+scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
+{
+ struct scpi_data *priv = policy->driver_data;
+ u64 rate = policy->freq_table[index].frequency * 1000;
+ int ret;
+
+ ret = clk_set_rate(priv->clk, rate);
+ if (!ret && (clk_get_rate(priv->clk) != rate))
+ ret = -EIO;
+
+ return ret;
+}
+
+static int
+scpi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
- return scpi_ops->get_transition_latency(cpu_dev);
+ int cpu, domain, tdomain;
+ struct device *tcpu_dev;
+
+ domain = scpi_ops->device_domain_id(cpu_dev);
+ if (domain < 0)
+ return domain;
+
+ for_each_possible_cpu(cpu) {
+ if (cpu == cpu_dev->id)
+ continue;
+
+ tcpu_dev = get_cpu_device(cpu);
+ if (!tcpu_dev)
+ continue;
+
+ tdomain = scpi_ops->device_domain_id(tcpu_dev);
+ if (tdomain == domain)
+ cpumask_set_cpu(cpu, cpumask);
+ }
+
+ return 0;
}
-static int scpi_init_opp_table(const struct cpumask *cpumask)
+static int scpi_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
- struct device *cpu_dev = get_cpu_device(cpumask_first(cpumask));
+ unsigned int latency;
+ struct device *cpu_dev;
+ struct scpi_data *priv;
+ struct cpufreq_frequency_table *freq_table;
+
+ cpu_dev = get_cpu_device(policy->cpu);
+ if (!cpu_dev) {
+ pr_err("failed to get cpu%d device\n", policy->cpu);
+ return -ENODEV;
+ }
ret = scpi_ops->add_opps_to_device(cpu_dev);
if (ret) {
@@ -46,32 +108,133 @@ static int scpi_init_opp_table(const struct cpumask *cpumask)
return ret;
}
- ret = dev_pm_opp_set_sharing_cpus(cpu_dev, cpumask);
- if (ret)
+ ret = scpi_get_sharing_cpus(cpu_dev, policy->cpus);
+ if (ret) {
+ dev_warn(cpu_dev, "failed to get sharing cpumask\n");
+ return ret;
+ }
+
+ ret = dev_pm_opp_set_sharing_cpus(cpu_dev, policy->cpus);
+ if (ret) {
dev_err(cpu_dev, "%s: failed to mark OPPs as shared: %d\n",
__func__, ret);
+ return ret;
+ }
+
+ ret = dev_pm_opp_get_opp_count(cpu_dev);
+ if (ret <= 0) {
+ dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
+ ret = -EPROBE_DEFER;
+ goto out_free_opp;
+ }
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto out_free_opp;
+ }
+
+ ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
+ if (ret) {
+ dev_err(cpu_dev, "failed to init cpufreq table: %d\n", ret);
+ goto out_free_priv;
+ }
+
+ priv->cpu_dev = cpu_dev;
+ priv->clk = clk_get(cpu_dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d\n",
+ __func__, cpu_dev->id);
+ goto out_free_cpufreq_table;
+ }
+
+ policy->driver_data = priv;
+
+ ret = cpufreq_table_validate_and_show(policy, freq_table);
+ if (ret) {
+ dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__,
+ ret);
+ goto out_put_clk;
+ }
+
+ /* scpi allows DVFS request for any domain from any CPU */
+ policy->dvfs_possible_from_any_cpu = true;
+
+ latency = scpi_ops->get_transition_latency(cpu_dev);
+ if (!latency)
+ latency = CPUFREQ_ETERNAL;
+
+ policy->cpuinfo.transition_latency = latency;
+
+ policy->fast_switch_possible = false;
+ return 0;
+
+out_put_clk:
+ clk_put(priv->clk);
+out_free_cpufreq_table:
+ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
+out_free_priv:
+ kfree(priv);
+out_free_opp:
+ dev_pm_opp_cpumask_remove_table(policy->cpus);
+
return ret;
}
-static const struct cpufreq_arm_bL_ops scpi_cpufreq_ops = {
- .name = "scpi",
- .get_transition_latency = scpi_get_transition_latency,
- .init_opp_table = scpi_init_opp_table,
- .free_opp_table = dev_pm_opp_cpumask_remove_table,
+static int scpi_cpufreq_exit(struct cpufreq_policy *policy)
+{
+ struct scpi_data *priv = policy->driver_data;
+
+ cpufreq_cooling_unregister(priv->cdev);
+ clk_put(priv->clk);
+ dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
+ kfree(priv);
+ dev_pm_opp_cpumask_remove_table(policy->related_cpus);
+
+ return 0;
+}
+
+static void scpi_cpufreq_ready(struct cpufreq_policy *policy)
+{
+ struct scpi_data *priv = policy->driver_data;
+ struct thermal_cooling_device *cdev;
+
+ cdev = of_cpufreq_cooling_register(policy);
+ if (!IS_ERR(cdev))
+ priv->cdev = cdev;
+}
+
+static struct cpufreq_driver scpi_cpufreq_driver = {
+ .name = "scpi-cpufreq",
+ .flags = CPUFREQ_STICKY | CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
+ CPUFREQ_NEED_INITIAL_FREQ_CHECK,
+ .verify = cpufreq_generic_frequency_table_verify,
+ .attr = cpufreq_generic_attr,
+ .get = scpi_cpufreq_get_rate,
+ .init = scpi_cpufreq_init,
+ .exit = scpi_cpufreq_exit,
+ .ready = scpi_cpufreq_ready,
+ .target_index = scpi_cpufreq_set_target,
};
static int scpi_cpufreq_probe(struct platform_device *pdev)
{
+ int ret;
+
scpi_ops = get_scpi_ops();
if (!scpi_ops)
return -EIO;
- return bL_cpufreq_register(&scpi_cpufreq_ops);
+ ret = cpufreq_register_driver(&scpi_cpufreq_driver);
+ if (ret)
+ dev_err(&pdev->dev, "%s: registering cpufreq failed, err: %d\n",
+ __func__, ret);
+ return ret;
}
static int scpi_cpufreq_remove(struct platform_device *pdev)
{
- bL_cpufreq_unregister(&scpi_cpufreq_ops);
+ cpufreq_unregister_driver(&scpi_cpufreq_driver);
scpi_ops = NULL;
return 0;
}
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 923317f03b4b..a099b7bf74cd 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -17,6 +17,7 @@
#include <linux/cpu.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
+#include <linux/module.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_platform.h>
@@ -50,6 +51,7 @@ struct ti_cpufreq_soc_data {
unsigned long efuse_mask;
unsigned long efuse_shift;
unsigned long rev_offset;
+ bool multi_regulator;
};
struct ti_cpufreq_data {
@@ -57,6 +59,7 @@ struct ti_cpufreq_data {
struct device_node *opp_node;
struct regmap *syscon;
const struct ti_cpufreq_soc_data *soc_data;
+ struct opp_table *opp_table;
};
static unsigned long amx3_efuse_xlate(struct ti_cpufreq_data *opp_data,
@@ -95,6 +98,7 @@ static struct ti_cpufreq_soc_data am3x_soc_data = {
.efuse_offset = 0x07fc,
.efuse_mask = 0x1fff,
.rev_offset = 0x600,
+ .multi_regulator = false,
};
static struct ti_cpufreq_soc_data am4x_soc_data = {
@@ -103,6 +107,7 @@ static struct ti_cpufreq_soc_data am4x_soc_data = {
.efuse_offset = 0x0610,
.efuse_mask = 0x3f,
.rev_offset = 0x600,
+ .multi_regulator = false,
};
static struct ti_cpufreq_soc_data dra7_soc_data = {
@@ -111,6 +116,7 @@ static struct ti_cpufreq_soc_data dra7_soc_data = {
.efuse_mask = 0xf80000,
.efuse_shift = 19,
.rev_offset = 0x204,
+ .multi_regulator = true,
};
/**
@@ -195,12 +201,14 @@ static const struct of_device_id ti_cpufreq_of_match[] = {
{},
};
-static int ti_cpufreq_init(void)
+static int ti_cpufreq_probe(struct platform_device *pdev)
{
u32 version[VERSION_COUNT];
struct device_node *np;
const struct of_device_id *match;
+ struct opp_table *ti_opp_table;
struct ti_cpufreq_data *opp_data;
+ const char * const reg_names[] = {"vdd", "vbb"};
int ret;
np = of_find_node_by_path("/");
@@ -247,16 +255,29 @@ static int ti_cpufreq_init(void)
if (ret)
goto fail_put_node;
- ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(opp_data->cpu_dev,
- version, VERSION_COUNT));
- if (ret) {
+ ti_opp_table = dev_pm_opp_set_supported_hw(opp_data->cpu_dev,
+ version, VERSION_COUNT);
+ if (IS_ERR(ti_opp_table)) {
dev_err(opp_data->cpu_dev,
"Failed to set supported hardware\n");
+ ret = PTR_ERR(ti_opp_table);
goto fail_put_node;
}
- of_node_put(opp_data->opp_node);
+ opp_data->opp_table = ti_opp_table;
+
+ if (opp_data->soc_data->multi_regulator) {
+ ti_opp_table = dev_pm_opp_set_regulators(opp_data->cpu_dev,
+ reg_names,
+ ARRAY_SIZE(reg_names));
+ if (IS_ERR(ti_opp_table)) {
+ dev_pm_opp_put_supported_hw(opp_data->opp_table);
+ ret = PTR_ERR(ti_opp_table);
+ goto fail_put_node;
+ }
+ }
+ of_node_put(opp_data->opp_node);
register_cpufreq_dt:
platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
@@ -269,4 +290,22 @@ free_opp_data:
return ret;
}
-device_initcall(ti_cpufreq_init);
+
+static int ti_cpufreq_init(void)
+{
+ platform_device_register_simple("ti-cpufreq", -1, NULL, 0);
+ return 0;
+}
+module_init(ti_cpufreq_init);
+
+static struct platform_driver ti_cpufreq_driver = {
+ .probe = ti_cpufreq_probe,
+ .driver = {
+ .name = "ti-cpufreq",
+ },
+};
+module_platform_driver(ti_cpufreq_driver);
+
+MODULE_DESCRIPTION("TI CPUFreq/OPP hw-supported driver");
+MODULE_AUTHOR("Dave Gerlach <d-gerlach@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/firmware/psci_checker.c b/drivers/firmware/psci_checker.c
index f3f4f810e5df..bb1c068bff19 100644
--- a/drivers/firmware/psci_checker.c
+++ b/drivers/firmware/psci_checker.c
@@ -77,8 +77,8 @@ static int psci_ops_check(void)
return 0;
}
-static int find_clusters(const struct cpumask *cpus,
- const struct cpumask **clusters)
+static int find_cpu_groups(const struct cpumask *cpus,
+ const struct cpumask **cpu_groups)
{
unsigned int nb = 0;
cpumask_var_t tmp;
@@ -88,11 +88,11 @@ static int find_clusters(const struct cpumask *cpus,
cpumask_copy(tmp, cpus);
while (!cpumask_empty(tmp)) {
- const struct cpumask *cluster =
+ const struct cpumask *cpu_group =
topology_core_cpumask(cpumask_any(tmp));
- clusters[nb++] = cluster;
- cpumask_andnot(tmp, tmp, cluster);
+ cpu_groups[nb++] = cpu_group;
+ cpumask_andnot(tmp, tmp, cpu_group);
}
free_cpumask_var(tmp);
@@ -170,24 +170,24 @@ static int hotplug_tests(void)
{
int err;
cpumask_var_t offlined_cpus;
- int i, nb_cluster;
- const struct cpumask **clusters;
+ int i, nb_cpu_group;
+ const struct cpumask **cpu_groups;
char *page_buf;
err = -ENOMEM;
if (!alloc_cpumask_var(&offlined_cpus, GFP_KERNEL))
return err;
- /* We may have up to nb_available_cpus clusters. */
- clusters = kmalloc_array(nb_available_cpus, sizeof(*clusters),
- GFP_KERNEL);
- if (!clusters)
+ /* We may have up to nb_available_cpus cpu_groups. */
+ cpu_groups = kmalloc_array(nb_available_cpus, sizeof(*cpu_groups),
+ GFP_KERNEL);
+ if (!cpu_groups)
goto out_free_cpus;
page_buf = (char *)__get_free_page(GFP_KERNEL);
if (!page_buf)
- goto out_free_clusters;
+ goto out_free_cpu_groups;
err = 0;
- nb_cluster = find_clusters(cpu_online_mask, clusters);
+ nb_cpu_group = find_cpu_groups(cpu_online_mask, cpu_groups);
/*
* Of course the last CPU cannot be powered down and cpu_down() should
@@ -197,24 +197,22 @@ static int hotplug_tests(void)
err += down_and_up_cpus(cpu_online_mask, offlined_cpus);
/*
- * Take down CPUs by cluster this time. When the last CPU is turned
- * off, the cluster itself should shut down.
+ * Take down CPUs by cpu group this time. When the last CPU is turned
+ * off, the cpu group itself should shut down.
*/
- for (i = 0; i < nb_cluster; ++i) {
- int cluster_id =
- topology_physical_package_id(cpumask_any(clusters[i]));
+ for (i = 0; i < nb_cpu_group; ++i) {
ssize_t len = cpumap_print_to_pagebuf(true, page_buf,
- clusters[i]);
+ cpu_groups[i]);
/* Remove trailing newline. */
page_buf[len - 1] = '\0';
- pr_info("Trying to turn off and on again cluster %d "
- "(CPUs %s)\n", cluster_id, page_buf);
- err += down_and_up_cpus(clusters[i], offlined_cpus);
+ pr_info("Trying to turn off and on again group %d (CPUs %s)\n",
+ i, page_buf);
+ err += down_and_up_cpus(cpu_groups[i], offlined_cpus);
}
free_page((unsigned long)page_buf);
-out_free_clusters:
- kfree(clusters);
+out_free_cpu_groups:
+ kfree(cpu_groups);
out_free_cpus:
free_cpumask_var(offlined_cpus);
return err;
diff --git a/drivers/opp/Makefile b/drivers/opp/Makefile
index e70ceb406fe9..6ce6aefacc81 100644
--- a/drivers/opp/Makefile
+++ b/drivers/opp/Makefile
@@ -2,3 +2,4 @@ ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
obj-y += core.o cpu.o
obj-$(CONFIG_OF) += of.o
obj-$(CONFIG_DEBUG_FS) += debugfs.o
+obj-$(CONFIG_ARM_TI_CPUFREQ) += ti-opp-supply.o
diff --git a/drivers/opp/ti-opp-supply.c b/drivers/opp/ti-opp-supply.c
new file mode 100644
index 000000000000..370eff3acd8a
--- /dev/null
+++ b/drivers/opp/ti-opp-supply.c
@@ -0,0 +1,425 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Nishanth Menon <nm@ti.com>
+ * Dave Gerlach <d-gerlach@ti.com>
+ *
+ * TI OPP supply driver that provides override into the regulator control
+ * for generic opp core to handle devices with ABB regulator and/or
+ * SmartReflex Class0.
+ */
+#include <linux/clk.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+/**
+ * struct ti_opp_supply_optimum_voltage_table - optimized voltage table
+ * @reference_uv: reference voltage (usually Nominal voltage)
+ * @optimized_uv: Optimized voltage from efuse
+ */
+struct ti_opp_supply_optimum_voltage_table {
+ unsigned int reference_uv;
+ unsigned int optimized_uv;
+};
+
+/**
+ * struct ti_opp_supply_data - OMAP specific opp supply data
+ * @vdd_table: Optimized voltage mapping table
+ * @num_vdd_table: number of entries in vdd_table
+ * @vdd_absolute_max_voltage_uv: absolute maximum voltage in UV for the supply
+ */
+struct ti_opp_supply_data {
+ struct ti_opp_supply_optimum_voltage_table *vdd_table;
+ u32 num_vdd_table;
+ u32 vdd_absolute_max_voltage_uv;
+};
+
+static struct ti_opp_supply_data opp_data;
+
+/**
+ * struct ti_opp_supply_of_data - device tree match data
+ * @flags: specific type of opp supply
+ * @efuse_voltage_mask: mask required for efuse register representing voltage
+ * @efuse_voltage_uv: Are the efuse entries in micro-volts? if not, assume
+ * milli-volts.
+ */
+struct ti_opp_supply_of_data {
+#define OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE BIT(1)
+#define OPPDM_HAS_NO_ABB BIT(2)
+ const u8 flags;
+ const u32 efuse_voltage_mask;
+ const bool efuse_voltage_uv;
+};
+
+/**
+ * _store_optimized_voltages() - store optimized voltages
+ * @dev: ti opp supply device for which we need to store info
+ * @data: data specific to the device
+ *
+ * Picks up efuse based optimized voltages for VDD unique per device and
+ * stores it in internal data structure for use during transition requests.
+ *
+ * Return: If successful, 0, else appropriate error value.
+ */
+static int _store_optimized_voltages(struct device *dev,
+ struct ti_opp_supply_data *data)
+{
+ void __iomem *base;
+ struct property *prop;
+ struct resource *res;
+ const __be32 *val;
+ int proplen, i;
+ int ret = 0;
+ struct ti_opp_supply_optimum_voltage_table *table;
+ const struct ti_opp_supply_of_data *of_data = dev_get_drvdata(dev);
+
+ /* pick up Efuse based voltages */
+ res = platform_get_resource(to_platform_device(dev), IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "Unable to get IO resource\n");
+ ret = -ENODEV;
+ goto out_map;
+ }
+
+ base = ioremap_nocache(res->start, resource_size(res));
+ if (!base) {
+ dev_err(dev, "Unable to map Efuse registers\n");
+ ret = -ENOMEM;
+ goto out_map;
+ }
+
+ /* Fetch efuse-settings. */
+ prop = of_find_property(dev->of_node, "ti,efuse-settings", NULL);
+ if (!prop) {
+ dev_err(dev, "No 'ti,efuse-settings' property found\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ proplen = prop->length / sizeof(int);
+ data->num_vdd_table = proplen / 2;
+ /* Verify for corrupted OPP entries in dt */
+ if (data->num_vdd_table * 2 * sizeof(int) != prop->length) {
+ dev_err(dev, "Invalid 'ti,efuse-settings'\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = of_property_read_u32(dev->of_node, "ti,absolute-max-voltage-uv",
+ &data->vdd_absolute_max_voltage_uv);
+ if (ret) {
+ dev_err(dev, "ti,absolute-max-voltage-uv is missing\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ table = kzalloc(sizeof(*data->vdd_table) *
+ data->num_vdd_table, GFP_KERNEL);
+ if (!table) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ data->vdd_table = table;
+
+ val = prop->value;
+ for (i = 0; i < data->num_vdd_table; i++, table++) {
+ u32 efuse_offset;
+ u32 tmp;
+
+ table->reference_uv = be32_to_cpup(val++);
+ efuse_offset = be32_to_cpup(val++);
+
+ tmp = readl(base + efuse_offset);
+ tmp &= of_data->efuse_voltage_mask;
+ tmp >>= __ffs(of_data->efuse_voltage_mask);
+
+ table->optimized_uv = of_data->efuse_voltage_uv ? tmp :
+ tmp * 1000;
+
+ dev_dbg(dev, "[%d] efuse=0x%08x volt_table=%d vset=%d\n",
+ i, efuse_offset, table->reference_uv,
+ table->optimized_uv);
+
+ /*
+ * Some older samples might not have optimized efuse
+ * Use reference voltage for those - just add debug message
+ * for them.
+ */
+ if (!table->optimized_uv) {
+ dev_dbg(dev, "[%d] efuse=0x%08x volt_table=%d:vset0\n",
+ i, efuse_offset, table->reference_uv);
+ table->optimized_uv = table->reference_uv;
+ }
+ }
+out:
+ iounmap(base);
+out_map:
+ return ret;
+}
+
+/**
+ * _free_optimized_voltages() - free resources for optvoltages
+ * @dev: device for which we need to free info
+ * @data: data specific to the device
+ */
+static void _free_optimized_voltages(struct device *dev,
+ struct ti_opp_supply_data *data)
+{
+ kfree(data->vdd_table);
+ data->vdd_table = NULL;
+ data->num_vdd_table = 0;
+}
+
+/**
+ * _get_optimal_vdd_voltage() - Finds optimal voltage for the supply
+ * @dev: device for which we need to find info
+ * @data: data specific to the device
+ * @reference_uv: reference voltage (OPP voltage) for which we need value
+ *
+ * Return: if a match is found, return optimized voltage, else return
+ * reference_uv, also return reference_uv if no optimization is needed.
+ */
+static int _get_optimal_vdd_voltage(struct device *dev,
+ struct ti_opp_supply_data *data,
+ int reference_uv)
+{
+ int i;
+ struct ti_opp_supply_optimum_voltage_table *table;
+
+ if (!data->num_vdd_table)
+ return reference_uv;
+
+ table = data->vdd_table;
+ if (!table)
+ return -EINVAL;
+
+ /* Find a exact match - this list is usually very small */
+ for (i = 0; i < data->num_vdd_table; i++, table++)
+ if (table->reference_uv == reference_uv)
+ return table->optimized_uv;
+
+ /* IF things are screwed up, we'd make a mess on console.. ratelimit */
+ dev_err_ratelimited(dev, "%s: Failed optimized voltage match for %d\n",
+ __func__, reference_uv);
+ return reference_uv;
+}
+
+static int _opp_set_voltage(struct device *dev,
+ struct dev_pm_opp_supply *supply,
+ int new_target_uv, struct regulator *reg,
+ char *reg_name)
+{
+ int ret;
+ unsigned long vdd_uv, uv_max;
+
+ if (new_target_uv)
+ vdd_uv = new_target_uv;
+ else
+ vdd_uv = supply->u_volt;
+
+ /*
+ * If we do have an absolute max voltage specified, then we should
+ * use that voltage instead to allow for cases where the voltage rails
+ * are ganged (example if we set the max for an opp as 1.12v, and
+ * the absolute max is 1.5v, for another rail to get 1.25v, it cannot
+ * be achieved if the regulator is constrainted to max of 1.12v, even
+ * if it can function at 1.25v
+ */
+ if (opp_data.vdd_absolute_max_voltage_uv)
+ uv_max = opp_data.vdd_absolute_max_voltage_uv;
+ else
+ uv_max = supply->u_volt_max;
+
+ if (vdd_uv > uv_max ||
+ vdd_uv < supply->u_volt_min ||
+ supply->u_volt_min > uv_max) {
+ dev_warn(dev,
+ "Invalid range voltages [Min:%lu target:%lu Max:%lu]\n",
+ supply->u_volt_min, vdd_uv, uv_max);
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "%s scaling to %luuV[min %luuV max %luuV]\n", reg_name,
+ vdd_uv, supply->u_volt_min,
+ uv_max);
+
+ ret = regulator_set_voltage_triplet(reg,
+ supply->u_volt_min,
+ vdd_uv,
+ uv_max);
+ if (ret) {
+ dev_err(dev, "%s failed for %luuV[min %luuV max %luuV]\n",
+ reg_name, vdd_uv, supply->u_volt_min,
+ uv_max);
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * ti_opp_supply_set_opp() - do the opp supply transition
+ * @data: information on regulators and new and old opps provided by
+ * opp core to use in transition
+ *
+ * Return: If successful, 0, else appropriate error value.
+ */
+static int ti_opp_supply_set_opp(struct dev_pm_set_opp_data *data)
+{
+ struct dev_pm_opp_supply *old_supply_vdd = &data->old_opp.supplies[0];
+ struct dev_pm_opp_supply *old_supply_vbb = &data->old_opp.supplies[1];
+ struct dev_pm_opp_supply *new_supply_vdd = &data->new_opp.supplies[0];
+ struct dev_pm_opp_supply *new_supply_vbb = &data->new_opp.supplies[1];
+ struct device *dev = data->dev;
+ unsigned long old_freq = data->old_opp.rate, freq = data->new_opp.rate;
+ struct clk *clk = data->clk;
+ struct regulator *vdd_reg = data->regulators[0];
+ struct regulator *vbb_reg = data->regulators[1];
+ int vdd_uv;
+ int ret;
+
+ vdd_uv = _get_optimal_vdd_voltage(dev, &opp_data,
+ new_supply_vbb->u_volt);
+
+ /* Scaling up? Scale voltage before frequency */
+ if (freq > old_freq) {
+ ret = _opp_set_voltage(dev, new_supply_vdd, vdd_uv, vdd_reg,
+ "vdd");
+ if (ret)
+ goto restore_voltage;
+
+ ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
+ if (ret)
+ goto restore_voltage;
+ }
+
+ /* Change frequency */
+ dev_dbg(dev, "%s: switching OPP: %lu Hz --> %lu Hz\n",
+ __func__, old_freq, freq);
+
+ ret = clk_set_rate(clk, freq);
+ if (ret) {
+ dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
+ ret);
+ goto restore_voltage;
+ }
+
+ /* Scaling down? Scale voltage after frequency */
+ if (freq < old_freq) {
+ ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
+ if (ret)
+ goto restore_freq;
+
+ ret = _opp_set_voltage(dev, new_supply_vdd, vdd_uv, vdd_reg,
+ "vdd");
+ if (ret)
+ goto restore_freq;
+ }
+
+ return 0;
+
+restore_freq:
+ ret = clk_set_rate(clk, old_freq);
+ if (ret)
+ dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
+ __func__, old_freq);
+restore_voltage:
+ /* This shouldn't harm even if the voltages weren't updated earlier */
+ if (old_supply_vdd->u_volt) {
+ ret = _opp_set_voltage(dev, old_supply_vbb, 0, vbb_reg, "vbb");
+ if (ret)
+ return ret;
+
+ ret = _opp_set_voltage(dev, old_supply_vdd, 0, vdd_reg,
+ "vdd");
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
+static const struct ti_opp_supply_of_data omap_generic_of_data = {
+};
+
+static const struct ti_opp_supply_of_data omap_omap5_of_data = {
+ .flags = OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE,
+ .efuse_voltage_mask = 0xFFF,
+ .efuse_voltage_uv = false,
+};
+
+static const struct ti_opp_supply_of_data omap_omap5core_of_data = {
+ .flags = OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE | OPPDM_HAS_NO_ABB,
+ .efuse_voltage_mask = 0xFFF,
+ .efuse_voltage_uv = false,
+};
+
+static const struct of_device_id ti_opp_supply_of_match[] = {
+ {.compatible = "ti,omap-opp-supply", .data = &omap_generic_of_data},
+ {.compatible = "ti,omap5-opp-supply", .data = &omap_omap5_of_data},
+ {.compatible = "ti,omap5-core-opp-supply",
+ .data = &omap_omap5core_of_data},
+ {},
+};
+MODULE_DEVICE_TABLE(of, ti_opp_supply_of_match);
+
+static int ti_opp_supply_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device *cpu_dev = get_cpu_device(0);
+ const struct of_device_id *match;
+ const struct ti_opp_supply_of_data *of_data;
+ int ret = 0;
+
+ match = of_match_device(ti_opp_supply_of_match, dev);
+ if (!match) {
+ /* We do not expect this to happen */
+ dev_err(dev, "%s: Unable to match device\n", __func__);
+ return -ENODEV;
+ }
+ if (!match->data) {
+ /* Again, unlikely.. but mistakes do happen */
+ dev_err(dev, "%s: Bad data in match\n", __func__);
+ return -EINVAL;
+ }
+ of_data = match->data;
+
+ dev_set_drvdata(dev, (void *)of_data);
+
+ /* If we need optimized voltage */
+ if (of_data->flags & OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE) {
+ ret = _store_optimized_voltages(dev, &opp_data);
+ if (ret)
+ return ret;
+ }
+
+ ret = PTR_ERR_OR_ZERO(dev_pm_opp_register_set_opp_helper(cpu_dev,
+ ti_opp_supply_set_opp));
+ if (ret)
+ _free_optimized_voltages(dev, &opp_data);
+
+ return ret;
+}
+
+static struct platform_driver ti_opp_supply_driver = {
+ .probe = ti_opp_supply_probe,
+ .driver = {
+ .name = "ti_opp_supply",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(ti_opp_supply_of_match),
+ },
+};
+module_platform_driver(ti_opp_supply_driver);
+
+MODULE_DESCRIPTION("Texas Instruments OMAP OPP Supply driver");
+MODULE_AUTHOR("Texas Instruments Inc.");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index dc63aba092e4..dfd23245f778 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -88,7 +88,6 @@ struct time_in_idle {
* @policy: cpufreq policy.
* @node: list_head to link all cpufreq_cooling_device together.
* @idle_time: idle time stats
- * @plat_get_static_power: callback to calculate the static power
*
* This structure is required for keeping information of each registered
* cpufreq_cooling_device.
@@ -104,7 +103,6 @@ struct cpufreq_cooling_device {
struct cpufreq_policy *policy;
struct list_head node;
struct time_in_idle *idle_time;
- get_static_t plat_get_static_power;
};
static DEFINE_IDA(cpufreq_ida);
@@ -319,60 +317,6 @@ static u32 get_load(struct cpufreq_cooling_device *cpufreq_cdev, int cpu,
}
/**
- * get_static_power() - calculate the static power consumed by the cpus
- * @cpufreq_cdev: struct &cpufreq_cooling_device for this cpu cdev
- * @tz: thermal zone device in which we're operating
- * @freq: frequency in KHz
- * @power: pointer in which to store the calculated static power
- *
- * Calculate the static power consumed by the cpus described by
- * @cpu_actor running at frequency @freq. This function relies on a
- * platform specific function that should have been provided when the
- * actor was registered. If it wasn't, the static power is assumed to
- * be negligible. The calculated static power is stored in @power.
- *
- * Return: 0 on success, -E* on failure.
- */
-static int get_static_power(struct cpufreq_cooling_device *cpufreq_cdev,
- struct thermal_zone_device *tz, unsigned long freq,
- u32 *power)
-{
- struct dev_pm_opp *opp;
- unsigned long voltage;
- struct cpufreq_policy *policy = cpufreq_cdev->policy;
- struct cpumask *cpumask = policy->related_cpus;
- unsigned long freq_hz = freq * 1000;
- struct device *dev;
-
- if (!cpufreq_cdev->plat_get_static_power) {
- *power = 0;
- return 0;
- }
-
- dev = get_cpu_device(policy->cpu);
- WARN_ON(!dev);
-
- opp = dev_pm_opp_find_freq_exact(dev, freq_hz, true);
- if (IS_ERR(opp)) {
- dev_warn_ratelimited(dev, "Failed to find OPP for frequency %lu: %ld\n",
- freq_hz, PTR_ERR(opp));
- return -EINVAL;
- }
-
- voltage = dev_pm_opp_get_voltage(opp);
- dev_pm_opp_put(opp);
-
- if (voltage == 0) {
- dev_err_ratelimited(dev, "Failed to get voltage for frequency %lu\n",
- freq_hz);
- return -EINVAL;
- }
-
- return cpufreq_cdev->plat_get_static_power(cpumask, tz->passive_delay,
- voltage, power);
-}
-
-/**
* get_dynamic_power() - calculate the dynamic power
* @cpufreq_cdev: &cpufreq_cooling_device for this cdev
* @freq: current frequency
@@ -491,8 +435,8 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
u32 *power)
{
unsigned long freq;
- int i = 0, cpu, ret;
- u32 static_power, dynamic_power, total_load = 0;
+ int i = 0, cpu;
+ u32 total_load = 0;
struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
struct cpufreq_policy *policy = cpufreq_cdev->policy;
u32 *load_cpu = NULL;
@@ -522,22 +466,15 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
cpufreq_cdev->last_load = total_load;
- dynamic_power = get_dynamic_power(cpufreq_cdev, freq);
- ret = get_static_power(cpufreq_cdev, tz, freq, &static_power);
- if (ret) {
- kfree(load_cpu);
- return ret;
- }
+ *power = get_dynamic_power(cpufreq_cdev, freq);
if (load_cpu) {
trace_thermal_power_cpu_get_power(policy->related_cpus, freq,
- load_cpu, i, dynamic_power,
- static_power);
+ load_cpu, i, *power);
kfree(load_cpu);
}
- *power = static_power + dynamic_power;
return 0;
}
@@ -561,8 +498,6 @@ static int cpufreq_state2power(struct thermal_cooling_device *cdev,
unsigned long state, u32 *power)
{
unsigned int freq, num_cpus;
- u32 static_power, dynamic_power;
- int ret;
struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
/* Request state should be less than max_level */
@@ -572,13 +507,9 @@ static int cpufreq_state2power(struct thermal_cooling_device *cdev,
num_cpus = cpumask_weight(cpufreq_cdev->policy->cpus);
freq = cpufreq_cdev->freq_table[state].frequency;
- dynamic_power = cpu_freq_to_power(cpufreq_cdev, freq) * num_cpus;
- ret = get_static_power(cpufreq_cdev, tz, freq, &static_power);
- if (ret)
- return ret;
+ *power = cpu_freq_to_power(cpufreq_cdev, freq) * num_cpus;
- *power = static_power + dynamic_power;
- return ret;
+ return 0;
}
/**
@@ -606,21 +537,14 @@ static int cpufreq_power2state(struct thermal_cooling_device *cdev,
unsigned long *state)
{
unsigned int cur_freq, target_freq;
- int ret;
- s32 dyn_power;
- u32 last_load, normalised_power, static_power;
+ u32 last_load, normalised_power;
struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
struct cpufreq_policy *policy = cpufreq_cdev->policy;
cur_freq = cpufreq_quick_get(policy->cpu);
- ret = get_static_power(cpufreq_cdev, tz, cur_freq, &static_power);
- if (ret)
- return ret;
-
- dyn_power = power - static_power;
- dyn_power = dyn_power > 0 ? dyn_power : 0;
+ power = power > 0 ? power : 0;
last_load = cpufreq_cdev->last_load ?: 1;
- normalised_power = (dyn_power * 100) / last_load;
+ normalised_power = (power * 100) / last_load;
target_freq = cpu_power_to_freq(cpufreq_cdev, normalised_power);
*state = get_level(cpufreq_cdev, target_freq);
@@ -671,8 +595,6 @@ static unsigned int find_next_max(struct cpufreq_frequency_table *table,
* @policy: cpufreq policy
* Normally this should be same as cpufreq policy->related_cpus.
* @capacitance: dynamic power coefficient for these cpus
- * @plat_static_func: function to calculate the static power consumed by these
- * cpus (optional)
*
* This interface function registers the cpufreq cooling device with the name
* "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
@@ -684,8 +606,7 @@ static unsigned int find_next_max(struct cpufreq_frequency_table *table,
*/
static struct thermal_cooling_device *
__cpufreq_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy, u32 capacitance,
- get_static_t plat_static_func)
+ struct cpufreq_policy *policy, u32 capacitance)
{
struct thermal_cooling_device *cdev;
struct cpufreq_cooling_device *cpufreq_cdev;
@@ -755,8 +676,6 @@ __cpufreq_cooling_register(struct device_node *np,
}
if (capacitance) {
- cpufreq_cdev->plat_get_static_power = plat_static_func;
-
ret = update_freq_table(cpufreq_cdev, capacitance);
if (ret) {
cdev = ERR_PTR(ret);
@@ -813,13 +732,12 @@ free_cdev:
struct thermal_cooling_device *
cpufreq_cooling_register(struct cpufreq_policy *policy)
{
- return __cpufreq_cooling_register(NULL, policy, 0, NULL);
+ return __cpufreq_cooling_register(NULL, policy, 0);
}
EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
/**
* of_cpufreq_cooling_register - function to create cpufreq cooling device.
- * @np: a valid struct device_node to the cooling device device tree node
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
@@ -827,86 +745,45 @@ EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
* cooling devices. Using this API, the cpufreq cooling device will be
* linked to the device tree node provided.
*
- * Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
- */
-struct thermal_cooling_device *
-of_cpufreq_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy)
-{
- if (!np)
- return ERR_PTR(-EINVAL);
-
- return __cpufreq_cooling_register(np, policy, 0, NULL);
-}
-EXPORT_SYMBOL_GPL(of_cpufreq_cooling_register);
-
-/**
- * cpufreq_power_cooling_register() - create cpufreq cooling device with power extensions
- * @policy: cpufreq policy
- * @capacitance: dynamic power coefficient for these cpus
- * @plat_static_func: function to calculate the static power consumed by these
- * cpus (optional)
- *
- * This interface function registers the cpufreq cooling device with
- * the name "thermal-cpufreq-%x". This api can support multiple
- * instances of cpufreq cooling devices. Using this function, the
- * cooling device will implement the power extensions by using a
- * simple cpu power model. The cpus must have registered their OPPs
- * using the OPP library.
- *
- * An optional @plat_static_func may be provided to calculate the
- * static power consumed by these cpus. If the platform's static
- * power consumption is unknown or negligible, make it NULL.
- *
- * Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
- */
-struct thermal_cooling_device *
-cpufreq_power_cooling_register(struct cpufreq_policy *policy, u32 capacitance,
- get_static_t plat_static_func)
-{
- return __cpufreq_cooling_register(NULL, policy, capacitance,
- plat_static_func);
-}
-EXPORT_SYMBOL(cpufreq_power_cooling_register);
-
-/**
- * of_cpufreq_power_cooling_register() - create cpufreq cooling device with power extensions
- * @np: a valid struct device_node to the cooling device device tree node
- * @policy: cpufreq policy
- * @capacitance: dynamic power coefficient for these cpus
- * @plat_static_func: function to calculate the static power consumed by these
- * cpus (optional)
- *
- * This interface function registers the cpufreq cooling device with
- * the name "thermal-cpufreq-%x". This api can support multiple
- * instances of cpufreq cooling devices. Using this API, the cpufreq
- * cooling device will be linked to the device tree node provided.
* Using this function, the cooling device will implement the power
* extensions by using a simple cpu power model. The cpus must have
* registered their OPPs using the OPP library.
*
- * An optional @plat_static_func may be provided to calculate the
- * static power consumed by these cpus. If the platform's static
- * power consumption is unknown or negligible, make it NULL.
+ * It also takes into account, if property present in policy CPU node, the
+ * static power consumed by the cpu.
*
* Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
+ * and NULL on failure.
*/
struct thermal_cooling_device *
-of_cpufreq_power_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy,
- u32 capacitance,
- get_static_t plat_static_func)
+of_cpufreq_cooling_register(struct cpufreq_policy *policy)
{
- if (!np)
- return ERR_PTR(-EINVAL);
+ struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
+ struct thermal_cooling_device *cdev = NULL;
+ u32 capacitance = 0;
+
+ if (!np) {
+ pr_err("cpu_cooling: OF node not available for cpu%d\n",
+ policy->cpu);
+ return NULL;
+ }
+
+ if (of_find_property(np, "#cooling-cells", NULL)) {
+ of_property_read_u32(np, "dynamic-power-coefficient",
+ &capacitance);
- return __cpufreq_cooling_register(np, policy, capacitance,
- plat_static_func);
+ cdev = __cpufreq_cooling_register(np, policy, capacitance);
+ if (IS_ERR(cdev)) {
+ pr_err("cpu_cooling: cpu%d is not running as cooling device: %ld\n",
+ policy->cpu, PTR_ERR(cdev));
+ cdev = NULL;
+ }
+ }
+
+ of_node_put(np);
+ return cdev;
}
-EXPORT_SYMBOL(of_cpufreq_power_cooling_register);
+EXPORT_SYMBOL_GPL(of_cpufreq_cooling_register);
/**
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.