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raspberrypi-kernel
提交 e857b33d 编写于 作者: L Len Brown
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Merge branch 'bjorn-cleanups' into release

上级 9a38f4ee 1c48aa36
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Showing with 135 addition and 164 deletion
drivers/acpi/Kconfig
浏览文件 @ e857b33d
......@@ -11,9 +11,9 @@ menuconfig ACPI
select PNP
select CPU_IDLE
default y
---help---
help
Advanced Configuration and Power Interface (ACPI) support for
Linux requires an ACPI compliant platform (hardware/firmware),
Linux requires an ACPI-compliant platform (hardware/firmware),
and assumes the presence of OS-directed configuration and power
management (OSPM) software. This option will enlarge your
kernel by about 70K.
......@@ -23,20 +23,19 @@ menuconfig ACPI
the Plug-and-Play BIOS specification (PnP BIOS), the
MultiProcessor Specification (MPS), and the Advanced Power
Management (APM) specification. If both ACPI and APM support
are configured, whichever is loaded first shall be used.
are configured, ACPI is used.
The ACPI SourceForge project contains the latest source code,
documentation, tools, mailing list subscription, and other
information. This project is available at:
<http://sourceforge.net/projects/acpi>
The project home page for the Linux ACPI subsystem is here:
<http://www.lesswatts.org/projects/acpi/>
Linux support for ACPI is based on Intel Corporation's ACPI
Component Architecture (ACPI CA). For more information see:
<http://developer.intel.com/technology/iapc/acpi>
Component Architecture (ACPI CA). For more information on the
ACPI CA, see:
<http://acpica.org/>
ACPI is an open industry specification co-developed by Compaq,
Intel, Microsoft, Phoenix, and Toshiba. The specification is
available at:
ACPI is an open industry specification co-developed by
Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
The specification is available at:
<http://www.acpi.info>
if ACPI
......@@ -49,14 +48,14 @@ config ACPI_SLEEP
config ACPI_PROCFS
bool "Deprecated /proc/acpi files"
depends on PROC_FS
---help---
help
For backwards compatibility, this option allows
deprecated /proc/acpi/ files to exist, even when
they have been replaced by functions in /sys.
The deprecated files (and their replacements) include:
/proc/acpi/sleep (/sys/power/state)
/proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
/proc/acpi/info (/sys/module/acpi/parameters/acpica_version)
/proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
/proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
/proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
......@@ -66,11 +65,12 @@ config ACPI_PROCFS
and functions which do not yet exist in /sys.
Say N to delete /proc/acpi/ files that have moved to /sys/
config ACPI_PROCFS_POWER
bool "Deprecated power /proc/acpi directories"
depends on PROC_FS
default y
---help---
help
For backwards compatibility, this option allows
deprecated power /proc/acpi/ directories to exist, even when
they have been replaced by functions in /sys.
......@@ -86,19 +86,19 @@ config ACPI_SYSFS_POWER
bool "Future power /sys interface"
select POWER_SUPPLY
default y
---help---
help
Say N to disable power /sys interface
config ACPI_PROC_EVENT
bool "Deprecated /proc/acpi/event support"
depends on PROC_FS
default y
---help---
A user-space daemon, acpi, typically read /proc/acpi/event
and handled all ACPI sub-system generated events.
help
A user-space daemon, acpid, typically reads /proc/acpi/event
and handles all ACPI-generated events.
These events are now delivered to user-space via
either the input layer, or as netlink events.
These events are now delivered to user-space either
via the input layer or as netlink events.
This build option enables the old code for legacy
user-space implementation. After some time, this will
......@@ -112,10 +112,13 @@ config ACPI_AC
depends on X86
default y
help
This driver adds support for the AC Adapter object, which indicates
whether a system is on AC, or not. If you have a system that can
This driver supports the AC Adapter object, which indicates
whether a system is on AC or not. If you have a system that can
switch between A/C and battery, say Y.
To compile this driver as a module, choose M here:
the module will be called ac.
config ACPI_BATTERY
tristate "Battery"
depends on X86
......@@ -125,15 +128,21 @@ config ACPI_BATTERY
/proc/acpi/battery. If you have a mobile system with a battery,
say Y.
To compile this driver as a module, choose M here:
the module will be called battery.
config ACPI_BUTTON
tristate "Button"
depends on INPUT
default y
help
This driver handles events on the power, sleep and lid buttons.
This driver handles events on the power, sleep, and lid buttons.
A daemon reads /proc/acpi/event and perform user-defined actions
such as shutting down the system. This is necessary for
software controlled poweroff.
software-controlled poweroff.
To compile this driver as a module, choose M here:
the module will be called button.
config ACPI_VIDEO
tristate "Video"
......@@ -141,38 +150,45 @@ config ACPI_VIDEO
depends on INPUT
select THERMAL
help
This driver implement the ACPI Extensions For Display Adapters
This driver implements the ACPI Extensions For Display Adapters
for integrated graphics devices on motherboard, as specified in
ACPI 2.0 Specification, Appendix B, allowing to perform some basic
control like defining the video POST device, retrieving EDID information
or to setup a video output, etc.
Note that this is an ref. implementation only. It may or may not work
for your integrated video device.
ACPI 2.0 Specification, Appendix B. This supports basic operations
such as defining the video POST device, retrieving EDID information,
and setting up a video output.
To compile this driver as a module, choose M here:
the module will be called video.
config ACPI_FAN
tristate "Fan"
select THERMAL
default y
help
This driver adds support for ACPI fan devices, allowing user-mode
This driver supports ACPI fan devices, allowing user-mode
applications to perform basic fan control (on, off, status).
To compile this driver as a module, choose M here:
the module will be called fan.
config ACPI_DOCK
bool "Dock"
depends on EXPERIMENTAL
help
This driver adds support for ACPI controlled docking stations and removable
drive bays such as the IBM ultrabay or the Dell Module Bay.
This driver supports ACPI-controlled docking stations and removable
drive bays such as the IBM Ultrabay and the Dell Module Bay.
config ACPI_PROCESSOR
tristate "Processor"
select THERMAL
default y
help
This driver installs ACPI as the idle handler for Linux, and uses
ACPI C2 and C3 processor states to save power, on systems that
This driver installs ACPI as the idle handler for Linux and uses
ACPI C2 and C3 processor states to save power on systems that
support it. It is required by several flavors of cpufreq
Performance-state drivers.
performance-state drivers.
To compile this driver as a module, choose M here:
the module will be called processor.
config ACPI_HOTPLUG_CPU
bool
......@@ -186,11 +202,14 @@ config ACPI_THERMAL
select THERMAL
default y
help
This driver adds support for ACPI thermal zones. Most mobile and
This driver supports ACPI thermal zones. Most mobile and
some desktop systems support ACPI thermal zones. It is HIGHLY
recommended that this option be enabled, as your processor(s)
may be damaged without it.
To compile this driver as a module, choose M here:
the module will be called thermal.
config ACPI_NUMA
bool "NUMA support"
depends on NUMA
......@@ -218,7 +237,7 @@ config ACPI_BLACKLIST_YEAR
int "Disable ACPI for systems before Jan 1st this year" if X86_32
default 0
help
enter a 4-digit year, eg. 2001 to disable ACPI by default
Enter a 4-digit year, e.g., 2001, to disable ACPI by default
on platforms with DMI BIOS date before January 1st that year.
"acpi=force" can be used to override this mechanism.
......@@ -249,10 +268,13 @@ config ACPI_PCI_SLOT
tristate "PCI slot detection driver"
default n
help
This driver will attempt to discover all PCI slots in your system,
and creates entries in /sys/bus/pci/slots/. This feature can
help you correlate PCI bus addresses with the physical geography
of your slots. If you are unsure, say N.
This driver creates entries in /sys/bus/pci/slots/ for all PCI
slots in the system. This can help correlate PCI bus addresses,
i.e., segment/bus/device/function tuples, with physical slots in
the system. If you are unsure, say N.
To compile this driver as a module, choose M here:
the module will be called pci_slot.
config X86_PM_TIMER
bool "Power Management Timer Support" if EMBEDDED
......@@ -271,43 +293,43 @@ config X86_PM_TIMER
systems require this timer.
config ACPI_CONTAINER
tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
tristate "Container and Module Devices (EXPERIMENTAL)"
depends on EXPERIMENTAL
default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
---help---
This allows _physical_ insertion and removal of CPUs and memory.
This can be useful, for example, on NUMA machines that support
ACPI based physical hotplug of nodes, or non-NUMA machines that
support physical cpu/memory hot-plug.
help
This driver supports ACPI Container and Module devices (IDs
ACPI0004, PNP0A05, and PNP0A06).
If one selects "m", this driver can be loaded with
"modprobe container".
This helps support hotplug of nodes, CPUs, and memory.
To compile this driver as a module, choose M here:
the module will be called container.
config ACPI_HOTPLUG_MEMORY
tristate "Memory Hotplug"
depends on MEMORY_HOTPLUG
default n
help
This driver adds supports for ACPI Memory Hotplug. This driver
provides support for fielding notifications on ACPI memory
devices (PNP0C80) which represent memory ranges that may be
onlined or offlined during runtime.
This driver supports ACPI memory hotplug. The driver
fields notifications on ACPI memory devices (PNP0C80),
which represent memory ranges that may be onlined or
offlined during runtime.
Enabling this driver assumes that your platform hardware
and firmware have support for hot-plugging physical memory. If
your system does not support physically adding or ripping out
memory DIMMs at some platform defined granularity (individually
or as a bank) at runtime, then you need not enable this driver.
If your hardware and firmware do not support adding or
removing memory devices at runtime, you need not enable
this driver.
If one selects "m," this driver can be loaded using the following
command:
$>modprobe acpi_memhotplug
To compile this driver as a module, choose M here:
the module will be called acpi_memhotplug.
config ACPI_SBS
tristate "Smart Battery System"
depends on X86
help
This driver adds support for the Smart Battery System, another
This driver supports the Smart Battery System, another
type of access to battery information, found on some laptops.
To compile this driver as a module, choose M here:
the modules will be called sbs and sbshc.
endif # ACPI
drivers/acpi/pci_irq.c
浏览文件 @ e857b33d
......@@ -319,7 +319,7 @@ static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin)
*/
bridge = dev->bus->self;
while (bridge) {
pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
pin = pci_swizzle_interrupt_pin(dev, pin);
if ((bridge->class >> 8) == PCI_CLASS_BRIDGE_CARDBUS) {
/* PC card has the same IRQ as its cardbridge */
......
drivers/acpi/pci_link.c
浏览文件 @ e857b33d
......@@ -43,13 +43,14 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#define _COMPONENT ACPI_PCI_COMPONENT
#define _COMPONENT ACPI_PCI_COMPONENT
ACPI_MODULE_NAME("pci_link");
#define ACPI_PCI_LINK_CLASS "pci_irq_routing"
#define ACPI_PCI_LINK_DEVICE_NAME "PCI Interrupt Link"
#define ACPI_PCI_LINK_FILE_INFO "info"
#define ACPI_PCI_LINK_FILE_STATUS "state"
#define ACPI_PCI_LINK_MAX_POSSIBLE 16
#define ACPI_PCI_LINK_MAX_POSSIBLE 16
static int acpi_pci_link_add(struct acpi_device *device);
static int acpi_pci_link_remove(struct acpi_device *device, int type);
......@@ -66,7 +67,7 @@ static struct acpi_driver acpi_pci_link_driver = {
.ops = {
.add = acpi_pci_link_add,
.remove = acpi_pci_link_remove,
},
},
};
/*
......@@ -76,7 +77,7 @@ static struct acpi_driver acpi_pci_link_driver = {
struct acpi_pci_link_irq {
u8 active; /* Current IRQ */
u8 triggering; /* All IRQs */
u8 polarity; /* All IRQs */
u8 polarity; /* All IRQs */
u8 resource_type;
u8 possible_count;
u8 possible[ACPI_PCI_LINK_MAX_POSSIBLE];
......@@ -85,16 +86,13 @@ struct acpi_pci_link_irq {
};
struct acpi_pci_link {
struct list_head node;
struct acpi_device *device;
struct acpi_pci_link_irq irq;
int refcnt;
struct list_head list;
struct acpi_device *device;
struct acpi_pci_link_irq irq;
int refcnt;
};
static struct {
int count;
struct list_head entries;
} acpi_link;
static LIST_HEAD(acpi_link_list);
static DEFINE_MUTEX(acpi_link_lock);
/* --------------------------------------------------------------------------
......@@ -104,12 +102,11 @@ static DEFINE_MUTEX(acpi_link_lock);
/*
* set context (link) possible list from resource list
*/
static acpi_status
acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
static acpi_status acpi_pci_link_check_possible(struct acpi_resource *resource,
void *context)
{
struct acpi_pci_link *link = context;
u32 i = 0;
u32 i;
switch (resource->type) {
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
......@@ -179,10 +176,6 @@ static int acpi_pci_link_get_possible(struct acpi_pci_link *link)
{
acpi_status status;
if (!link)
return -EINVAL;
status = acpi_walk_resources(link->device->handle, METHOD_NAME__PRS,
acpi_pci_link_check_possible, link);
if (ACPI_FAILURE(status)) {
......@@ -197,11 +190,10 @@ static int acpi_pci_link_get_possible(struct acpi_pci_link *link)
return 0;
}
static acpi_status
acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
static acpi_status acpi_pci_link_check_current(struct acpi_resource *resource,
void *context)
{
int *irq = (int *)context;
int *irq = context;
switch (resource->type) {
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
......@@ -258,12 +250,9 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
static int acpi_pci_link_get_current(struct acpi_pci_link *link)
{
int result = 0;
acpi_status status = AE_OK;
acpi_status status;
int irq = 0;
if (!link)
return -EINVAL;
link->irq.active = 0;
/* in practice, status disabled is meaningless, ignore it */
......@@ -308,16 +297,15 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link)
static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
{
int result = 0;
acpi_status status = AE_OK;
int result;
acpi_status status;
struct {
struct acpi_resource res;
struct acpi_resource end;
} *resource;
struct acpi_buffer buffer = { 0, NULL };
if (!link || !irq)
if (!irq)
return -EINVAL;
resource = kzalloc(sizeof(*resource) + 1, irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
......@@ -479,30 +467,22 @@ static int acpi_irq_penalty[ACPI_MAX_IRQS] = {
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ9 PCI, often acpi */
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ10 PCI */
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ11 PCI */
PIRQ_PENALTY_ISA_USED, /* IRQ12 mouse */
PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */
PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */
PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */
PIRQ_PENALTY_ISA_USED, /* IRQ12 mouse */
PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */
PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */
PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */
/* >IRQ15 */
};
int __init acpi_irq_penalty_init(void)
{
struct list_head *node = NULL;
struct acpi_pci_link *link = NULL;
int i = 0;
struct acpi_pci_link *link;
int i;
/*
* Update penalties to facilitate IRQ balancing.
*/
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {
printk(KERN_ERR PREFIX "Invalid link context\n");
continue;
}
list_for_each_entry(link, &acpi_link_list, list) {
/*
* reflect the possible and active irqs in the penalty table --
......@@ -527,7 +507,6 @@ int __init acpi_irq_penalty_init(void)
}
/* Add a penalty for the SCI */
acpi_irq_penalty[acpi_gbl_FADT.sci_interrupt] += PIRQ_PENALTY_PCI_USING;
return 0;
}
......@@ -538,7 +517,6 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
int irq;
int i;
if (link->irq.initialized) {
if (link->refcnt == 0)
/* This means the link is disabled but initialized */
......@@ -566,11 +544,10 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
/*
* if active found, use it; else pick entry from end of possible list.
*/
if (link->irq.active) {
if (link->irq.active)
irq = link->irq.active;
} else {
else
irq = link->irq.possible[link->irq.possible_count - 1];
}
if (acpi_irq_balance || !link->irq.active) {
/*
......@@ -599,7 +576,6 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
}
link->irq.initialized = 1;
return 0;
}
......@@ -608,16 +584,12 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
* success: return IRQ >= 0
* failure: return -1
*/
int
acpi_pci_link_allocate_irq(acpi_handle handle,
int index,
int *triggering, int *polarity, char **name)
int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
int *polarity, char **name)
{
int result = 0;
struct acpi_device *device = NULL;
struct acpi_pci_link *link = NULL;
int result;
struct acpi_device *device;
struct acpi_pci_link *link;
result = acpi_bus_get_device(handle, &device);
if (result) {
......@@ -669,11 +641,10 @@ acpi_pci_link_allocate_irq(acpi_handle handle,
*/
int acpi_pci_link_free_irq(acpi_handle handle)
{
struct acpi_device *device = NULL;
struct acpi_pci_link *link = NULL;
struct acpi_device *device;
struct acpi_pci_link *link;
acpi_status result;
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_ERR PREFIX "Invalid link device\n");
......@@ -708,9 +679,9 @@ int acpi_pci_link_free_irq(acpi_handle handle)
"Link %s is dereferenced\n",
acpi_device_bid(link->device)));
if (link->refcnt == 0) {
if (link->refcnt == 0)
acpi_evaluate_object(link->device->handle, "_DIS", NULL, NULL);
}
mutex_unlock(&acpi_link_lock);
return (link->irq.active);
}
......@@ -721,15 +692,11 @@ int acpi_pci_link_free_irq(acpi_handle handle)
static int acpi_pci_link_add(struct acpi_device *device)
{
int result = 0;
struct acpi_pci_link *link = NULL;
int i = 0;
int result;
struct acpi_pci_link *link;
int i;
int found = 0;
if (!device)
return -EINVAL;
link = kzalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
if (!link)
return -ENOMEM;
......@@ -767,9 +734,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
printk("\n");
/* TBD: Acquire/release lock */
list_add_tail(&link->node, &acpi_link.entries);
acpi_link.count++;
list_add_tail(&link->list, &acpi_link_list);
end:
/* disable all links -- to be activated on use */
......@@ -784,24 +749,17 @@ static int acpi_pci_link_add(struct acpi_device *device)
static int acpi_pci_link_resume(struct acpi_pci_link *link)
{
if (link->refcnt && link->irq.active && link->irq.initialized)
return (acpi_pci_link_set(link, link->irq.active));
else
return 0;
return 0;
}
static int irqrouter_resume(struct sys_device *dev)
{
struct list_head *node = NULL;
struct acpi_pci_link *link = NULL;
struct acpi_pci_link *link;
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {
printk(KERN_ERR PREFIX "Invalid link context\n");
continue;
}
list_for_each_entry(link, &acpi_link_list, list) {
acpi_pci_link_resume(link);
}
return 0;
......@@ -809,20 +767,15 @@ static int irqrouter_resume(struct sys_device *dev)
static int acpi_pci_link_remove(struct acpi_device *device, int type)
{
struct acpi_pci_link *link = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
struct acpi_pci_link *link;
link = acpi_driver_data(device);
mutex_lock(&acpi_link_lock);
list_del(&link->node);
list_del(&link->list);
mutex_unlock(&acpi_link_lock);
kfree(link);
return 0;
}
......@@ -931,7 +884,6 @@ static int __init irqrouter_init_sysfs(void)
{
int error;
if (acpi_disabled || acpi_noirq)
return 0;
......@@ -957,9 +909,6 @@ static int __init acpi_pci_link_init(void)
acpi_irq_balance = 0;
}
acpi_link.count = 0;
INIT_LIST_HEAD(&acpi_link.entries);
if (acpi_bus_register_driver(&acpi_pci_link_driver) < 0)
return -ENODEV;
......
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