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ipq806x: backport qcom-cpufreq-kryo patch

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Backport patch applied to qcom-cpufreq-kryo
driver as krait cpu will base on this driver.

Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> [nbg6817/ipq8065]
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
This commit is contained in:
Ansuel Smith 2019-12-15 02:28:46 +01:00 committed by Petr Štetiar
parent 4165f2340e
commit a37f787162
3 changed files with 551 additions and 0 deletions
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27
target/linux/ipq806x/patches-4.19/0035-qcom-cpufreq-nvmem-qcm-kyrp_make_Some_variables_static.patch Normal file
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@ -0,0 +1,27 @@
From 50c0b12f098fb3cfac7abcc0f2b5409f6bac5fa2 Mon Sep 17 00:00:00 2001
From: Yangtao Li <tiny.windzz@gmail.com>
Date: Mon, 4 Feb 2019 01:13:10 -0500
Subject: [PATCH] cpufreq: qcom-kryo: make some variables static
The variables are local to the source and do not
need to be in global scope, so make them static.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/qcom-cpufreq-kryo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
index 2a3675c24032b..1c8583cc06a2a 100644
--- a/drivers/cpufreq/qcom-cpufreq-kryo.c
+++ b/drivers/cpufreq/qcom-cpufreq-kryo.c
@@ -42,7 +42,7 @@ enum _msm8996_version {
NUM_OF_MSM8996_VERSIONS,
};
-struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
+static struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
static enum _msm8996_version qcom_cpufreq_kryo_get_msm_id(void)
{

281
target/linux/ipq806x/patches-4.19/0036-qcom-cpufreq-nvmem-Re-organise-kryo-cpufreq-driver.patch Normal file
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@ -0,0 +1,281 @@
From 7d12709544b8b3fb9727a34a664b8380e1e3493a Mon Sep 17 00:00:00 2001
From: Sricharan R <sricharan@codeaurora.org>
Date: Thu, 25 Jul 2019 12:41:31 +0200
Subject: [PATCH] cpufreq: qcom: Re-organise kryo cpufreq to use it for other
nvmem based qcom socs
The kryo cpufreq driver reads the nvmem cell and uses that data to
populate the opps. There are other qcom cpufreq socs like krait which
does similar thing. Except for the interpretation of the read data,
rest of the driver is same for both the cases. So pull the common things
out for reuse.
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
[niklas.cassel@linaro.org: split dt-binding into a separate patch and
do not rename the compatible string. Update MAINTAINERS file.]
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Ilia Lin <ilia.lin@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
MAINTAINERS | 4 +-
drivers/cpufreq/Kconfig.arm | 4 +-
drivers/cpufreq/Makefile | 2 +-
...om-cpufreq-kryo.c => qcom-cpufreq-nvmem.c} | 122 +++++++++++-------
4 files changed, 78 insertions(+), 54 deletions(-)
rename drivers/cpufreq/{qcom-cpufreq-kryo.c => qcom-cpufreq-nvmem.c} (69%)
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 56c31a78c6920..b1aa485a28dde 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -120,8 +120,8 @@ config ARM_OMAP2PLUS_CPUFREQ
depends on ARCH_OMAP2PLUS
default ARCH_OMAP2PLUS
-config ARM_QCOM_CPUFREQ_KRYO
- tristate "Qualcomm Kryo based CPUFreq"
+config ARM_QCOM_CPUFREQ_NVMEM
+ tristate "Qualcomm nvmem based CPUFreq"
depends on ARM64
depends on QCOM_QFPROM
depends on QCOM_SMEM
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 5a6c70d26c985..8572a918aa755 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -64,7 +64,7 @@ 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-$(CONFIG_ARM_QCOM_CPUFREQ_KRYO) += qcom-cpufreq-kryo.o
+obj-$(CONFIG_ARM_QCOM_CPUFREQ_NVMEM) += qcom-cpufreq-nvmem.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
diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
similarity index 69%
rename from drivers/cpufreq/qcom-cpufreq-kryo.c
rename to drivers/cpufreq/qcom-cpufreq-nvmem.c
index dd64dcf89c74c..fd08120768af2 100644
--- a/drivers/cpufreq/qcom-cpufreq-kryo.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -9,7 +9,7 @@
* 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
+ * 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.
@@ -22,6 +22,7 @@
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <linux/slab.h>
@@ -42,9 +43,9 @@ enum _msm8996_version {
NUM_OF_MSM8996_VERSIONS,
};
-static struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev;
+static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev;
-static enum _msm8996_version qcom_cpufreq_kryo_get_msm_id(void)
+static enum _msm8996_version qcom_cpufreq_get_msm_id(void)
{
size_t len;
u32 *msm_id;
@@ -73,28 +74,62 @@ static enum _msm8996_version qcom_cpufreq_kryo_get_msm_id(void)
return version;
}
-static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
+static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
+ struct nvmem_cell *speedbin_nvmem,
+ u32 *versions)
{
- struct opp_table **opp_tables;
+ size_t len;
+ u8 *speedbin;
enum _msm8996_version msm8996_version;
+
+ msm8996_version = qcom_cpufreq_get_msm_id();
+ if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
+ dev_err(cpu_dev, "Not Snapdragon 820/821!");
+ return -ENODEV;
+ }
+
+ speedbin = nvmem_cell_read(speedbin_nvmem, &len);
+ if (IS_ERR(speedbin))
+ return PTR_ERR(speedbin);
+
+ switch (msm8996_version) {
+ case MSM8996_V3:
+ *versions = 1 << (unsigned int)(*speedbin);
+ break;
+ case MSM8996_SG:
+ *versions = 1 << ((unsigned int)(*speedbin) + 4);
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ kfree(speedbin);
+ return 0;
+}
+
+static int qcom_cpufreq_probe(struct platform_device *pdev)
+{
+ struct opp_table **opp_tables;
+ int (*get_version)(struct device *cpu_dev,
+ struct nvmem_cell *speedbin_nvmem,
+ u32 *versions);
struct nvmem_cell *speedbin_nvmem;
struct device_node *np;
struct device *cpu_dev;
unsigned cpu;
- u8 *speedbin;
u32 versions;
- size_t len;
+ const struct of_device_id *match;
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!");
+ match = pdev->dev.platform_data;
+ get_version = match->data;
+ if (!get_version)
return -ENODEV;
- }
np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
if (!np)
@@ -115,23 +150,10 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
return PTR_ERR(speedbin_nvmem);
}
- speedbin = nvmem_cell_read(speedbin_nvmem, &len);
+ ret = get_version(cpu_dev, speedbin_nvmem, &versions);
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);
+ if (ret)
+ return ret;
opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL);
if (!opp_tables)
@@ -174,7 +196,7 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
return ret;
}
-static int qcom_cpufreq_kryo_remove(struct platform_device *pdev)
+static int qcom_cpufreq_remove(struct platform_device *pdev)
{
struct opp_table **opp_tables = platform_get_drvdata(pdev);
unsigned int cpu;
@@ -189,18 +211,20 @@ static int qcom_cpufreq_kryo_remove(struct platform_device *pdev)
return 0;
}
-static struct platform_driver qcom_cpufreq_kryo_driver = {
- .probe = qcom_cpufreq_kryo_probe,
- .remove = qcom_cpufreq_kryo_remove,
+static struct platform_driver qcom_cpufreq_driver = {
+ .probe = qcom_cpufreq_probe,
+ .remove = qcom_cpufreq_remove,
.driver = {
- .name = "qcom-cpufreq-kryo",
+ .name = "qcom-cpufreq-nvmem",
},
};
-static const struct of_device_id qcom_cpufreq_kryo_match_list[] __initconst = {
- { .compatible = "qcom,apq8096", },
- { .compatible = "qcom,msm8996", },
- {}
+static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
+ { .compatible = "qcom,apq8096",
+ .data = qcom_cpufreq_kryo_name_version },
+ { .compatible = "qcom,msm8996",
+ .data = qcom_cpufreq_kryo_name_version },
+ {},
};
/*
@@ -209,7 +233,7 @@ static const struct of_device_id qcom_cpufreq_kryo_match_list[] __initconst = {
* 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)
+static int __init qcom_cpufreq_init(void)
{
struct device_node *np = of_find_node_by_path("/");
const struct of_device_id *match;
@@ -218,32 +242,32 @@ static int __init qcom_cpufreq_kryo_init(void)
if (!np)
return -ENODEV;
- match = of_match_node(qcom_cpufreq_kryo_match_list, np);
+ match = of_match_node(qcom_cpufreq_match_list, np);
of_node_put(np);
if (!match)
return -ENODEV;
- ret = platform_driver_register(&qcom_cpufreq_kryo_driver);
+ ret = platform_driver_register(&qcom_cpufreq_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);
+ 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_kryo_driver);
+ platform_driver_unregister(&qcom_cpufreq_driver);
return ret;
}
-module_init(qcom_cpufreq_kryo_init);
+module_init(qcom_cpufreq_init);
-static void __exit qcom_cpufreq_kryo_exit(void)
+static void __exit qcom_cpufreq_exit(void)
{
- platform_device_unregister(kryo_cpufreq_pdev);
- platform_driver_unregister(&qcom_cpufreq_kryo_driver);
+ platform_device_unregister(cpufreq_pdev);
+ platform_driver_unregister(&qcom_cpufreq_driver);
}
-module_exit(qcom_cpufreq_kryo_exit);
+module_exit(qcom_cpufreq_exit);
-MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver");
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. CPUfreq driver");
MODULE_LICENSE("GPL v2");

243
target/linux/ipq806x/patches-4.19/0037-qcom-cpufreq-nvmem-Refactor-the-driver.patch Normal file
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@ -0,0 +1,243 @@
From 57f2f8b4aa0c6b41a284da82bfa40dc3b2abe9a5 Mon Sep 17 00:00:00 2001
From: Niklas Cassel <niklas.cassel@linaro.org>
Date: Thu, 25 Jul 2019 12:41:33 +0200
Subject: [PATCH] cpufreq: qcom: Refactor the driver to make it easier to
extend
Refactor the driver to make it easier to extend in a later commit.
Create a driver struct to collect all common resources, in order to make
it easier to free up all common resources.
Create a driver match_data struct to make it easier to extend the driver
with support for new features that might only be supported on certain SoCs.
Co-developed-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Ilia Lin <ilia.lin@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/qcom-cpufreq-nvmem.c | 123 +++++++++++++++++----------
1 file changed, 79 insertions(+), 44 deletions(-)
diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index fd08120768af2..2d798a1685c5d 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -43,6 +43,20 @@ enum _msm8996_version {
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);
+};
+
+struct qcom_cpufreq_drv {
+ struct opp_table **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)
@@ -76,7 +90,7 @@ static enum _msm8996_version qcom_cpufreq_get_msm_id(void)
static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
struct nvmem_cell *speedbin_nvmem,
- u32 *versions)
+ struct qcom_cpufreq_drv *drv)
{
size_t len;
u8 *speedbin;
@@ -94,10 +108,10 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
switch (msm8996_version) {
case MSM8996_V3:
- *versions = 1 << (unsigned int)(*speedbin);
+ drv->versions = 1 << (unsigned int)(*speedbin);
break;
case MSM8996_SG:
- *versions = 1 << ((unsigned int)(*speedbin) + 4);
+ drv->versions = 1 << ((unsigned int)(*speedbin) + 4);
break;
default:
BUG();
@@ -108,17 +122,17 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
return 0;
}
+static const struct qcom_cpufreq_match_data match_data_kryo = {
+ .get_version = qcom_cpufreq_kryo_name_version,
+};
+
static int qcom_cpufreq_probe(struct platform_device *pdev)
{
- struct opp_table **opp_tables;
- int (*get_version)(struct device *cpu_dev,
- struct nvmem_cell *speedbin_nvmem,
- u32 *versions);
+ struct qcom_cpufreq_drv *drv;
struct nvmem_cell *speedbin_nvmem;
struct device_node *np;
struct device *cpu_dev;
unsigned cpu;
- u32 versions;
const struct of_device_id *match;
int ret;
@@ -126,11 +140,6 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
if (!cpu_dev)
return -ENODEV;
- match = pdev->dev.platform_data;
- get_version = match->data;
- if (!get_version)
- return -ENODEV;
-
np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
if (!np)
return -ENOENT;
@@ -141,23 +150,43 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
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);
+ 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;
}
- ret = get_version(cpu_dev, speedbin_nvmem, &versions);
- nvmem_cell_put(speedbin_nvmem);
- if (ret)
- return ret;
+ 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;
+ }
- opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL);
- if (!opp_tables)
- return -ENOMEM;
+ 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;
+ }
for_each_possible_cpu(cpu) {
cpu_dev = get_cpu_device(cpu);
@@ -166,19 +195,23 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
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;
+ 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_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);
+ platform_set_drvdata(pdev, drv);
return 0;
}
@@ -187,26 +220,30 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
free_opp:
for_each_possible_cpu(cpu) {
- if (IS_ERR_OR_NULL(opp_tables[cpu]))
+ if (IS_ERR_OR_NULL(drv->opp_tables[cpu]))
break;
- dev_pm_opp_put_supported_hw(opp_tables[cpu]);
+ dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]);
}
- kfree(opp_tables);
+ kfree(drv->opp_tables);
+free_drv:
+ kfree(drv);
return ret;
}
static int qcom_cpufreq_remove(struct platform_device *pdev)
{
- struct opp_table **opp_tables = platform_get_drvdata(pdev);
+ struct qcom_cpufreq_drv *drv = 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]);
+ if (drv->opp_tables[cpu])
+ dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]);
- kfree(opp_tables);
+ kfree(drv->opp_tables);
+ kfree(drv);
return 0;
}
@@ -220,10 +257,8 @@ static struct platform_driver qcom_cpufreq_driver = {
};
static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
- { .compatible = "qcom,apq8096",
- .data = qcom_cpufreq_kryo_name_version },
- { .compatible = "qcom,msm8996",
- .data = qcom_cpufreq_kryo_name_version },
+ { .compatible = "qcom,apq8096", .data = &match_data_kryo },
+ { .compatible = "qcom,msm8996", .data = &match_data_kryo },
{},
};