mirror of https://gitee.com/openkylin/linux.git
Merge branch 'cpufreq/qcom-updates' into cpufreq/arm/linux-next
This commit is contained in:
Viresh Kumar
commit
f75d2accca
|
|
@ -1,25 +1,38 @@
|
|||
Qualcomm Technologies, Inc. KRYO CPUFreq and OPP bindings
|
||||
Qualcomm Technologies, Inc. NVMEM CPUFreq and OPP bindings
|
||||
===================================
|
||||
|
||||
In Certain Qualcomm Technologies, Inc. SoCs like apq8096 and msm8996
|
||||
that have KRYO processors, the CPU ferequencies subset and voltage value
|
||||
of each OPP varies based on the silicon variant in use.
|
||||
In Certain Qualcomm Technologies, Inc. SoCs like apq8096 and msm8996,
|
||||
the CPU frequencies subset and voltage value of each OPP varies based on
|
||||
the silicon variant in use.
|
||||
Qualcomm Technologies, Inc. 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
|
||||
The qcom-cpufreq-nvmem driver reads the msm-id and efuse value from the SoC
|
||||
to provide the OPP framework with required information (existing HW bitmap).
|
||||
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.
|
||||
|
||||
Required properties:
|
||||
--------------------
|
||||
In 'cpus' nodes:
|
||||
In 'cpu' nodes:
|
||||
- operating-points-v2: Phandle to the operating-points-v2 table to use.
|
||||
|
||||
In 'operating-points-v2' table:
|
||||
- compatible: Should be
|
||||
- 'operating-points-v2-kryo-cpu' for apq8096 and msm8996.
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||||
|
||||
Optional properties:
|
||||
--------------------
|
||||
In 'cpu' nodes:
|
||||
- power-domains: A phandle pointing to the PM domain specifier which provides
|
||||
the performance states available for active state management.
|
||||
Please refer to the power-domains bindings
|
||||
Documentation/devicetree/bindings/power/power_domain.txt
|
||||
and also examples below.
|
||||
- power-domain-names: Should be
|
||||
- 'cpr' for qcs404.
|
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|
||||
In 'operating-points-v2' table:
|
||||
- nvmem-cells: A phandle pointing to a nvmem-cells node representing the
|
||||
efuse registers that has information about the
|
||||
speedbin that is used to select the right frequency/voltage
|
||||
|
|
@ -678,3 +691,105 @@ soc {
|
|||
};
|
||||
};
|
||||
};
|
||||
|
||||
Example 2:
|
||||
---------
|
||||
|
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cpus {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
CPU0: cpu@100 {
|
||||
device_type = "cpu";
|
||||
compatible = "arm,cortex-a53";
|
||||
reg = <0x100>;
|
||||
....
|
||||
clocks = <&apcs_glb>;
|
||||
operating-points-v2 = <&cpu_opp_table>;
|
||||
power-domains = <&cpr>;
|
||||
power-domain-names = "cpr";
|
||||
};
|
||||
|
||||
CPU1: cpu@101 {
|
||||
device_type = "cpu";
|
||||
compatible = "arm,cortex-a53";
|
||||
reg = <0x101>;
|
||||
....
|
||||
clocks = <&apcs_glb>;
|
||||
operating-points-v2 = <&cpu_opp_table>;
|
||||
power-domains = <&cpr>;
|
||||
power-domain-names = "cpr";
|
||||
};
|
||||
|
||||
CPU2: cpu@102 {
|
||||
device_type = "cpu";
|
||||
compatible = "arm,cortex-a53";
|
||||
reg = <0x102>;
|
||||
....
|
||||
clocks = <&apcs_glb>;
|
||||
operating-points-v2 = <&cpu_opp_table>;
|
||||
power-domains = <&cpr>;
|
||||
power-domain-names = "cpr";
|
||||
};
|
||||
|
||||
CPU3: cpu@103 {
|
||||
device_type = "cpu";
|
||||
compatible = "arm,cortex-a53";
|
||||
reg = <0x103>;
|
||||
....
|
||||
clocks = <&apcs_glb>;
|
||||
operating-points-v2 = <&cpu_opp_table>;
|
||||
power-domains = <&cpr>;
|
||||
power-domain-names = "cpr";
|
||||
};
|
||||
};
|
||||
|
||||
cpu_opp_table: cpu-opp-table {
|
||||
compatible = "operating-points-v2-kryo-cpu";
|
||||
opp-shared;
|
||||
|
||||
opp-1094400000 {
|
||||
opp-hz = /bits/ 64 <1094400000>;
|
||||
required-opps = <&cpr_opp1>;
|
||||
};
|
||||
opp-1248000000 {
|
||||
opp-hz = /bits/ 64 <1248000000>;
|
||||
required-opps = <&cpr_opp2>;
|
||||
};
|
||||
opp-1401600000 {
|
||||
opp-hz = /bits/ 64 <1401600000>;
|
||||
required-opps = <&cpr_opp3>;
|
||||
};
|
||||
};
|
||||
|
||||
cpr_opp_table: cpr-opp-table {
|
||||
compatible = "operating-points-v2-qcom-level";
|
||||
|
||||
cpr_opp1: opp1 {
|
||||
opp-level = <1>;
|
||||
qcom,opp-fuse-level = <1>;
|
||||
};
|
||||
cpr_opp2: opp2 {
|
||||
opp-level = <2>;
|
||||
qcom,opp-fuse-level = <2>;
|
||||
};
|
||||
cpr_opp3: opp3 {
|
||||
opp-level = <3>;
|
||||
qcom,opp-fuse-level = <3>;
|
||||
};
|
||||
};
|
||||
|
||||
....
|
||||
|
||||
soc {
|
||||
....
|
||||
cpr: power-controller@b018000 {
|
||||
compatible = "qcom,qcs404-cpr", "qcom,cpr";
|
||||
reg = <0x0b018000 0x1000>;
|
||||
....
|
||||
vdd-apc-supply = <&pms405_s3>;
|
||||
#power-domain-cells = <0>;
|
||||
operating-points-v2 = <&cpr_opp_table>;
|
||||
....
|
||||
};
|
||||
};
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
Qualcomm OPP bindings to describe OPP nodes
|
||||
|
||||
The bindings are based on top of the operating-points-v2 bindings
|
||||
described in Documentation/devicetree/bindings/opp/opp.txt
|
||||
Additional properties are described below.
|
||||
|
||||
* OPP Table Node
|
||||
|
||||
Required properties:
|
||||
- compatible: Allow OPPs to express their compatibility. It should be:
|
||||
"operating-points-v2-qcom-level"
|
||||
|
||||
* OPP Node
|
||||
|
||||
Required properties:
|
||||
- qcom,opp-fuse-level: A positive value representing the fuse corner/level
|
||||
associated with this OPP node. Sometimes several corners/levels shares
|
||||
a certain fuse corner/level. A fuse corner/level contains e.g. ref uV,
|
||||
min uV, and max uV.
|
||||
|
|
@ -13292,8 +13292,8 @@ QUALCOMM CPUFREQ DRIVER MSM8996/APQ8096
|
|||
M: Ilia Lin <ilia.lin@kernel.org>
|
||||
L: linux-pm@vger.kernel.org
|
||||
S: Maintained
|
||||
F: Documentation/devicetree/bindings/opp/kryo-cpufreq.txt
|
||||
F: drivers/cpufreq/qcom-cpufreq-kryo.c
|
||||
F: Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
|
||||
F: drivers/cpufreq/qcom-cpufreq-nvmem.c
|
||||
|
||||
QUALCOMM EMAC GIGABIT ETHERNET DRIVER
|
||||
M: Timur Tabi <timur@kernel.org>
|
||||
|
|
|
|||
|
|
@ -132,8 +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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -127,6 +127,7 @@ static const struct of_device_id blacklist[] __initconst = {
|
|||
|
||||
{ .compatible = "qcom,apq8096", },
|
||||
{ .compatible = "qcom,msm8996", },
|
||||
{ .compatible = "qcom,qcs404", },
|
||||
|
||||
{ .compatible = "st,stih407", },
|
||||
{ .compatible = "st,stih410", },
|
||||
|
|
|
|||
|
|
@ -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");
|
||||
|
|
@ -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");
|
||||
|
|
@ -401,6 +401,54 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact);
|
||||
|
||||
/**
|
||||
* dev_pm_opp_find_level_exact() - search for an exact level
|
||||
* @dev: device for which we do this operation
|
||||
* @level: level to search for
|
||||
*
|
||||
* Return: Searches for exact match in the opp table and returns pointer to the
|
||||
* matching opp if found, else returns ERR_PTR in case of error and should
|
||||
* be handled using IS_ERR. Error return values can be:
|
||||
* EINVAL: for bad pointer
|
||||
* ERANGE: no match found for search
|
||||
* ENODEV: if device not found in list of registered devices
|
||||
*
|
||||
* The callers are required to call dev_pm_opp_put() for the returned OPP after
|
||||
* use.
|
||||
*/
|
||||
struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
|
||||
unsigned int level)
|
||||
{
|
||||
struct opp_table *opp_table;
|
||||
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
|
||||
|
||||
opp_table = _find_opp_table(dev);
|
||||
if (IS_ERR(opp_table)) {
|
||||
int r = PTR_ERR(opp_table);
|
||||
|
||||
dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
|
||||
return ERR_PTR(r);
|
||||
}
|
||||
|
||||
mutex_lock(&opp_table->lock);
|
||||
|
||||
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
|
||||
if (temp_opp->level == level) {
|
||||
opp = temp_opp;
|
||||
|
||||
/* Increment the reference count of OPP */
|
||||
dev_pm_opp_get(opp);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
mutex_unlock(&opp_table->lock);
|
||||
dev_pm_opp_put_opp_table(opp_table);
|
||||
|
||||
return opp;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
|
||||
|
||||
static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
|
||||
unsigned long *freq)
|
||||
{
|
||||
|
|
@ -1771,6 +1819,7 @@ static void _opp_detach_genpd(struct opp_table *opp_table)
|
|||
* dev_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
|
||||
* @dev: Consumer device for which the genpd is getting attached.
|
||||
* @names: Null terminated array of pointers containing names of genpd to attach.
|
||||
* @virt_devs: Pointer to return the array of virtual devices.
|
||||
*
|
||||
* Multiple generic power domains for a device are supported with the help of
|
||||
* virtual genpd devices, which are created for each consumer device - genpd
|
||||
|
|
@ -1784,12 +1833,16 @@ static void _opp_detach_genpd(struct opp_table *opp_table)
|
|||
*
|
||||
* This helper needs to be called once with a list of all genpd to attach.
|
||||
* Otherwise the original device structure will be used instead by the OPP core.
|
||||
*
|
||||
* The order of entries in the names array must match the order in which
|
||||
* "required-opps" are added in DT.
|
||||
*/
|
||||
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names)
|
||||
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
|
||||
const char **names, struct device ***virt_devs)
|
||||
{
|
||||
struct opp_table *opp_table;
|
||||
struct device *virt_dev;
|
||||
int index, ret = -EINVAL;
|
||||
int index = 0, ret = -EINVAL;
|
||||
const char **name = names;
|
||||
|
||||
opp_table = dev_pm_opp_get_opp_table(dev);
|
||||
|
|
@ -1815,14 +1868,6 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names
|
|||
goto unlock;
|
||||
|
||||
while (*name) {
|
||||
index = of_property_match_string(dev->of_node,
|
||||
"power-domain-names", *name);
|
||||
if (index < 0) {
|
||||
dev_err(dev, "Failed to find power domain: %s (%d)\n",
|
||||
*name, index);
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (index >= opp_table->required_opp_count) {
|
||||
dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n",
|
||||
*name, opp_table->required_opp_count, index);
|
||||
|
|
@ -1843,9 +1888,12 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names
|
|||
}
|
||||
|
||||
opp_table->genpd_virt_devs[index] = virt_dev;
|
||||
index++;
|
||||
name++;
|
||||
}
|
||||
|
||||
if (virt_devs)
|
||||
*virt_devs = opp_table->genpd_virt_devs;
|
||||
mutex_unlock(&opp_table->genpd_virt_dev_lock);
|
||||
|
||||
return opp_table;
|
||||
|
|
|
|||
|
|
@ -96,6 +96,8 @@ unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);
|
|||
struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
|
||||
unsigned long freq,
|
||||
bool available);
|
||||
struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
|
||||
unsigned int level);
|
||||
|
||||
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
|
||||
unsigned long *freq);
|
||||
|
|
@ -128,7 +130,7 @@ struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name);
|
|||
void dev_pm_opp_put_clkname(struct opp_table *opp_table);
|
||||
struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
|
||||
void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
|
||||
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names);
|
||||
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
|
||||
void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
|
||||
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
|
||||
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
|
||||
|
|
@ -200,6 +202,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
|
|||
return ERR_PTR(-ENOTSUPP);
|
||||
}
|
||||
|
||||
static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
|
||||
unsigned int level)
|
||||
{
|
||||
return ERR_PTR(-ENOTSUPP);
|
||||
}
|
||||
|
||||
static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
|
||||
unsigned long *freq)
|
||||
{
|
||||
|
|
@ -292,7 +300,7 @@ static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const
|
|||
|
||||
static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
|
||||
|
||||
static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names)
|
||||
static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs)
|
||||
{
|
||||
return ERR_PTR(-ENOTSUPP);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue