@@ -13320,8 +13320,8 @@ 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
similarity index 69%
rename from drivers/cpufreq/qcom-cpufreq-kryo.c
rename to 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");