AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-04-10 08:18:17 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge branch 'pm-devfreq' into pm-for-linus

Browse Source 
* pm-devfreq:
  PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412.
  PM / devfreq: separate error paths from successful path
This commit is contained in:
Rafael J. Wysocki 2011-12-25 23:41:30 +01:00
commit 8d274ab7d3
4 changed files with 1158 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/devfreq/Kconfig
View File

@ -65,4 +65,17 @@ config DEVFREQ_GOV_USERSPACE
comment "DEVFREQ Drivers" comment "DEVFREQ Drivers"
config ARM_EXYNOS4_BUS_DEVFREQ
bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
depends on CPU_EXYNOS4210 || CPU_EXYNOS4212 || CPU_EXYNOS4412
select ARCH_HAS_OPP
select DEVFREQ_GOV_SIMPLE_ONDEMAND
help
This adds the DEVFREQ driver for Exynos4210 memory bus (vdd_int)
and Exynos4212/4412 memory interface and bus (vdd_mif + vdd_int).
It reads PPMU counters of memory controllers and adjusts
the operating frequencies and voltages with OPP support.
To operate with optimal voltages, ASV support is required
(CONFIG_EXYNOS_ASV).
endif # PM_DEVFREQ endif # PM_DEVFREQ

3
drivers/devfreq/Makefile
View File

@ -3,3 +3,6 @@ obj-$(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND) += governor_simpleondemand.o
obj-$(CONFIG_DEVFREQ_GOV_PERFORMANCE) += governor_performance.o obj-$(CONFIG_DEVFREQ_GOV_PERFORMANCE) += governor_performance.o
obj-$(CONFIG_DEVFREQ_GOV_POWERSAVE) += governor_powersave.o obj-$(CONFIG_DEVFREQ_GOV_POWERSAVE) += governor_powersave.o
obj-$(CONFIG_DEVFREQ_GOV_USERSPACE) += governor_userspace.o obj-$(CONFIG_DEVFREQ_GOV_USERSPACE) += governor_userspace.o
# DEVFREQ Drivers
obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos4_bus.o

15
drivers/devfreq/devfreq.c
View File

@ -347,7 +347,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
if (!IS_ERR(devfreq)) { if (!IS_ERR(devfreq)) {
dev_err(dev, "%s: Unable to create devfreq for the device. It already has one.\n", __func__); dev_err(dev, "%s: Unable to create devfreq for the device. It already has one.\n", __func__);
err = -EINVAL; err = -EINVAL;
goto out; goto err_out;
} }
} }
@ -356,7 +356,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
dev_err(dev, "%s: Unable to create devfreq for the device\n", dev_err(dev, "%s: Unable to create devfreq for the device\n",
__func__); __func__);
err = -ENOMEM; err = -ENOMEM;
goto out; goto err_out;
} }
mutex_init(&devfreq->lock); mutex_init(&devfreq->lock);
@ -399,17 +399,16 @@ struct devfreq *devfreq_add_device(struct device *dev,
devfreq->next_polling); devfreq->next_polling);
} }
mutex_unlock(&devfreq_list_lock); mutex_unlock(&devfreq_list_lock);
goto out; out:
return devfreq;
err_init: err_init:
device_unregister(&devfreq->dev); device_unregister(&devfreq->dev);
err_dev: err_dev:
mutex_unlock(&devfreq->lock); mutex_unlock(&devfreq->lock);
kfree(devfreq); kfree(devfreq);
out: err_out:
if (err) return ERR_PTR(err);
return ERR_PTR(err);
else
return devfreq;
} }
/** /**

1135
drivers/devfreq/exynos4_bus.c Normal file
View File

File diff suppressed because it is too large Load Diff