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i7300_idle: Remove this driver

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In preparation for removing the idle_notifier, remove its only user, the
i7300_idle driver.

i7300_idle was deployed in 2008 to reduce idle memory power on systems
using the i7300 chipset.  The driver worked by throttling the
fully-buffered DIMMs during idle periods using the IOAT DMA engine.

The driver ran only on the i7300 chip-set, and no other hardware has used
this mechanism.  The driver no longer has a maintainer.

Removing this driver will increase idle power on i7300 systems when they
run the new kernel without the driver.

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/ad6a044e57cc75f44cc8621abe846e58f7882243.1479449716.git.len.brown@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Len Brown
2016-11-18 01:23:17 -05:00
committed by Thomas Gleixner
parent a25f0944ba
commit b65ce83f2a
5 changed files with 0 additions and 638 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MAINTAINERS
-6
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@@ -6087,12 +6087,6 @@ S: Maintained
F: Documentation/cdrom/ide-cd F: Documentation/cdrom/ide-cd
F: drivers/ide/ide-cd* F: drivers/ide/ide-cd*
IDLE-I7300
M: Andy Henroid <andrew.d.henroid@intel.com>
L: linux-pm@vger.kernel.org
S: Supported
F: drivers/idle/i7300_idle.c
IEEE 802.15.4 SUBSYSTEM IEEE 802.15.4 SUBSYSTEM
M: Alexander Aring <aar@pengutronix.de> M: Alexander Aring <aar@pengutronix.de>
L: linux-wpan@vger.kernel.org L: linux-wpan@vger.kernel.org
drivers/dma/ioat/registers.h
-2
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@@ -106,8 +106,6 @@
#define IOAT_DMA_COMP_V1 0x0001 /* Compatibility with DMA version 1 */ #define IOAT_DMA_COMP_V1 0x0001 /* Compatibility with DMA version 1 */
#define IOAT_DMA_COMP_V2 0x0002 /* Compatibility with DMA version 2 */ #define IOAT_DMA_COMP_V2 0x0002 /* Compatibility with DMA version 2 */
/* IOAT1 define left for i7300_idle driver to not fail compiling */
#define IOAT1_CHANSTS_OFFSET 0x04
#define IOAT_CHANSTS_OFFSET 0x08 /* 64-bit Channel Status Register */ #define IOAT_CHANSTS_OFFSET 0x08 /* 64-bit Channel Status Register */
#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR (~0x3fULL) #define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR (~0x3fULL)
#define IOAT_CHANSTS_SOFT_ERR 0x10ULL #define IOAT_CHANSTS_SOFT_ERR 0x10ULL
drivers/idle/Kconfig
-17
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@@ -8,20 +8,3 @@ config INTEL_IDLE
native Intel hardware idle features. The acpi_idle driver native Intel hardware idle features. The acpi_idle driver
can be configured at the same time, in order to handle can be configured at the same time, in order to handle
processors intel_idle does not support. processors intel_idle does not support.
menu "Memory power savings"
depends on X86_64
config I7300_IDLE_IOAT_CHANNEL
bool
config I7300_IDLE
tristate "Intel chipset idle memory power saving driver"
select I7300_IDLE_IOAT_CHANNEL
help
Enable memory power savings when idle with certain Intel server
chipsets. The chipset must have I/O AT support, such as the
Intel 7300. The power savings depends on the type and quantity of
DRAM devices.
endmenu
drivers/idle/Makefile
-1
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@@ -1,3 +1,2 @@
obj-$(CONFIG_I7300_IDLE) += i7300_idle.o
obj-$(CONFIG_INTEL_IDLE) += intel_idle.o obj-$(CONFIG_INTEL_IDLE) += intel_idle.o
drivers/idle/i7300_idle.c
-612
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