aboutsummaryrefslogtreecommitdiff
path: root/drivers/acpi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/Kconfig22
-rw-r--r--drivers/acpi/Makefile8
-rw-r--r--drivers/acpi/ac.c3
-rw-r--r--drivers/acpi/acpi_memhotplug.c1
-rw-r--r--drivers/acpi/battery.c3
-rw-r--r--drivers/acpi/bus.c11
-rw-r--r--drivers/acpi/button.c3
-rw-r--r--drivers/acpi/cm_sbs.c7
-rw-r--r--drivers/acpi/container.c1
-rw-r--r--drivers/acpi/debug.c15
-rw-r--r--drivers/acpi/ec.c97
-rw-r--r--drivers/acpi/events/evgpe.c2
-rw-r--r--drivers/acpi/events/evxfevnt.c41
-rw-r--r--drivers/acpi/fan.c1
-rw-r--r--drivers/acpi/glue.c40
-rw-r--r--drivers/acpi/pci_link.c11
-rw-r--r--drivers/acpi/pci_root.c6
-rw-r--r--drivers/acpi/power.c11
-rw-r--r--drivers/acpi/processor_core.c93
-rw-r--r--drivers/acpi/processor_idle.c1
-rw-r--r--drivers/acpi/processor_perflib.c2
-rw-r--r--drivers/acpi/processor_thermal.c1
-rw-r--r--drivers/acpi/processor_throttling.c2
-rw-r--r--drivers/acpi/reboot.c25
-rw-r--r--drivers/acpi/scan.c42
-rw-r--r--drivers/acpi/sleep/proc.c2
-rw-r--r--drivers/acpi/sleep/wakeup.c8
-rw-r--r--drivers/acpi/system.c48
-rw-r--r--drivers/acpi/tables/tbfadt.c2
-rw-r--r--drivers/acpi/thermal.c9
-rw-r--r--drivers/acpi/video.c42
-rw-r--r--drivers/acpi/video_detect.c267
-rw-r--r--drivers/acpi/wmi.c2
33 files changed, 561 insertions, 268 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index f4f63291750..b0243fd55ac 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -312,9 +312,13 @@ config ACPI_DEBUG
bool "Debug Statements"
default n
help
- The ACPI driver can optionally report errors with a great deal
- of verbosity. Saying Y enables these statements. This will increase
- your kernel size by around 50K.
+ The ACPI subsystem can produce debug output. Saying Y enables this
+ output and increases the kernel size by around 50K.
+
+ Use the acpi.debug_layer and acpi.debug_level kernel command-line
+ parameters documented in Documentation/acpi/debug.txt and
+ Documentation/kernel-parameters.txt to control the type and
+ amount of debug output.
config ACPI_DEBUG_FUNC_TRACE
bool "Additionally enable ACPI function tracing"
@@ -324,14 +328,6 @@ config ACPI_DEBUG_FUNC_TRACE
ACPI Debug Statements slow down ACPI processing. Function trace
is about half of the penalty and is rarely useful.
-config ACPI_EC
- bool
- default y
- help
- This driver is required on some systems for the proper operation of
- the battery and thermal drivers. If you are compiling for a
- mobile system, say Y.
-
config ACPI_PCI_SLOT
tristate "PCI slot detection driver"
default n
@@ -341,10 +337,6 @@ config ACPI_PCI_SLOT
help you correlate PCI bus addresses with the physical geography
of your slots. If you are unsure, say N.
-config ACPI_POWER
- bool
- default y
-
config ACPI_SYSTEM
bool
default y
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index d91c027ece8..3c0c93300f1 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -39,19 +39,23 @@ obj-y += sleep/
obj-y += bus.o glue.o
obj-y += scan.o
# Keep EC driver first. Initialization of others depend on it.
-obj-$(CONFIG_ACPI_EC) += ec.o
+obj-y += ec.o
obj-$(CONFIG_ACPI_AC) += ac.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_BUTTON) += button.o
obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_DOCK) += dock.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
+ifdef CONFIG_ACPI_VIDEO
+obj-y += video_detect.o
+endif
+
obj-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o
obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
obj-$(CONFIG_ACPI_CONTAINER) += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
-obj-$(CONFIG_ACPI_POWER) += power.o
+obj-y += power.o
obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o
obj-$(CONFIG_ACPI_DEBUG) += debug.o
obj-$(CONFIG_ACPI_NUMA) += numa.o
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index d72a1b6c8a9..9b917dac773 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -37,7 +37,6 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_AC_COMPONENT 0x00020000
#define ACPI_AC_CLASS "ac_adapter"
#define ACPI_AC_DEVICE_NAME "AC Adapter"
#define ACPI_AC_FILE_STATE "state"
@@ -242,7 +241,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
acpi_ac_get_state(ac);
acpi_bus_generate_proc_event(device, event, (u32) ac->state);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event,
+ dev_name(&device->dev), event,
(u32) ac->state);
#ifdef CONFIG_ACPI_SYSFS_POWER
kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 71d21c51c45..63a17b55b39 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -32,7 +32,6 @@
#include <linux/memory_hotplug.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000UL
#define ACPI_MEMORY_DEVICE_CLASS "memory"
#define ACPI_MEMORY_DEVICE_HID "PNP0C80"
#define ACPI_MEMORY_DEVICE_NAME "Hotplug Mem Device"
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b2133e89ad9..1423b0c0cd2 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -46,7 +46,6 @@
#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
-#define ACPI_BATTERY_COMPONENT 0x00040000
#define ACPI_BATTERY_CLASS "battery"
#define ACPI_BATTERY_DEVICE_NAME "Battery"
#define ACPI_BATTERY_NOTIFY_STATUS 0x80
@@ -782,7 +781,7 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
acpi_bus_generate_proc_event(device, event,
acpi_battery_present(battery));
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event,
+ dev_name(&device->dev), event,
acpi_battery_present(battery));
#ifdef CONFIG_ACPI_SYSFS_POWER
/* acpi_batter_update could remove power_supply object */
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index c797c6473f3..7edf6d913c1 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -688,6 +688,14 @@ void __init acpi_early_init(void)
if (acpi_disabled)
return;
+ /*
+ * ACPI CA initializes acpi_dbg_level to non-zero, which means
+ * we get debug output merely by turning on CONFIG_ACPI_DEBUG.
+ * Turn it off so we don't get output unless the user specifies
+ * acpi.debug_level.
+ */
+ acpi_dbg_level = 0;
+
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
/* enable workarounds, unless strict ACPI spec. compliance */
@@ -774,7 +782,7 @@ static int __init acpi_bus_init(void)
"Unable to initialize ACPI OS objects\n");
goto error1;
}
-#ifdef CONFIG_ACPI_EC
+
/*
* ACPI 2.0 requires the EC driver to be loaded and work before
* the EC device is found in the namespace (i.e. before acpi_initialize_objects()
@@ -785,7 +793,6 @@ static int __init acpi_bus_init(void)
*/
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
-#endif
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index cb046c3fc3f..171fd914f43 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -33,7 +33,6 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_BUTTON_COMPONENT 0x00080000
#define ACPI_BUTTON_CLASS "button"
#define ACPI_BUTTON_FILE_INFO "info"
#define ACPI_BUTTON_FILE_STATE "state"
@@ -479,7 +478,7 @@ static int acpi_button_add(struct acpi_device *device)
device->wakeup.gpe_number,
ACPI_GPE_TYPE_WAKE_RUN);
acpi_enable_gpe(device->wakeup.gpe_device,
- device->wakeup.gpe_number, ACPI_NOT_ISR);
+ device->wakeup.gpe_number);
device->wakeup.state.enabled = 1;
}
diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c
index 4441e84b28a..307963bd104 100644
--- a/drivers/acpi/cm_sbs.c
+++ b/drivers/acpi/cm_sbs.c
@@ -34,7 +34,6 @@
ACPI_MODULE_NAME("cm_sbs");
#define ACPI_AC_CLASS "ac_adapter"
#define ACPI_BATTERY_CLASS "battery"
-#define ACPI_SBS_COMPONENT 0x00080000
#define _COMPONENT ACPI_SBS_COMPONENT
static struct proc_dir_entry *acpi_ac_dir;
static struct proc_dir_entry *acpi_battery_dir;
@@ -105,9 +104,3 @@ void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param)
return;
}
EXPORT_SYMBOL(acpi_unlock_battery_dir);
-
-static int __init acpi_cm_sbs_init(void)
-{
- return 0;
-}
-subsys_initcall(acpi_cm_sbs_init);
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 134818b265a..17020c12623 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -41,7 +41,6 @@
#define INSTALL_NOTIFY_HANDLER 1
#define UNINSTALL_NOTIFY_HANDLER 2
-#define ACPI_CONTAINER_COMPONENT 0x01000000
#define _COMPONENT ACPI_CONTAINER_COMPONENT
ACPI_MODULE_NAME("container");
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index abf36b4b1d1..c4839689200 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -44,6 +44,21 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
ACPI_DEBUG_INIT(ACPI_COMPILER),
ACPI_DEBUG_INIT(ACPI_TOOLS),
+
+ ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
+ ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
};
static const struct acpi_dlevel acpi_debug_levels[] = {
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ef42316f89f..cf41f9fc24a 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -70,7 +70,7 @@ enum ec_command {
#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
#define ACPI_EC_UDELAY 100 /* Wait 100us before polling EC again */
-#define ACPI_EC_STORM_THRESHOLD 20 /* number of false interrupts
+#define ACPI_EC_STORM_THRESHOLD 8 /* number of false interrupts
per one transaction */
enum {
@@ -100,8 +100,11 @@ struct transaction {
u8 *rdata;
unsigned short irq_count;
u8 command;
+ u8 wi;
+ u8 ri;
u8 wlen;
u8 rlen;
+ bool done;
};
static struct acpi_ec {
@@ -178,34 +181,45 @@ static int ec_transaction_done(struct acpi_ec *ec)
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&ec->curr_lock, flags);
- if (!ec->curr || (!ec->curr->wlen && !ec->curr->rlen))
+ if (!ec->curr || ec->curr->done)
ret = 1;
spin_unlock_irqrestore(&ec->curr_lock, flags);
return ret;
}
+static void start_transaction(struct acpi_ec *ec)
+{
+ ec->curr->irq_count = ec->curr->wi = ec->curr->ri = 0;
+ ec->curr->done = false;
+ acpi_ec_write_cmd(ec, ec->curr->command);
+}
+
static void gpe_transaction(struct acpi_ec *ec, u8 status)
{
unsigned long flags;
spin_lock_irqsave(&ec->curr_lock, flags);
if (!ec->curr)
goto unlock;
- if (ec->curr->wlen > 0) {
- if ((status & ACPI_EC_FLAG_IBF) == 0) {
- acpi_ec_write_data(ec, *(ec->curr->wdata++));
- --ec->curr->wlen;
- } else
- /* false interrupt, state didn't change */
- ++ec->curr->irq_count;
-
- } else if (ec->curr->rlen > 0) {
+ if (ec->curr->wlen > ec->curr->wi) {
+ if ((status & ACPI_EC_FLAG_IBF) == 0)
+ acpi_ec_write_data(ec,
+ ec->curr->wdata[ec->curr->wi++]);
+ else
+ goto err;
+ } else if (ec->curr->rlen > ec->curr->ri) {
if ((status & ACPI_EC_FLAG_OBF) == 1) {
- *(ec->curr->rdata++) = acpi_ec_read_data(ec);
- --ec->curr->rlen;
+ ec->curr->rdata[ec->curr->ri++] = acpi_ec_read_data(ec);
+ if (ec->curr->rlen == ec->curr->ri)
+ ec->curr->done = true;
} else
- /* false interrupt, state didn't change */
- ++ec->curr->irq_count;
- }
+ goto err;
+ } else if (ec->curr->wlen == ec->curr->wi &&
+ (status & ACPI_EC_FLAG_IBF) == 0)
+ ec->curr->done = true;
+ goto unlock;
+err:
+ /* false interrupt, state didn't change */
+ ++ec->curr->irq_count;
unlock:
spin_unlock_irqrestore(&ec->curr_lock, flags);
}
@@ -215,6 +229,15 @@ static int acpi_ec_wait(struct acpi_ec *ec)
if (wait_event_timeout(ec->wait, ec_transaction_done(ec),
msecs_to_jiffies(ACPI_EC_DELAY)))
return 0;
+ /* try restart command if we get any false interrupts */
+ if (ec->curr->irq_count &&
+ (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) == 0) {
+ pr_debug(PREFIX "controller reset, restart transaction\n");
+ start_transaction(ec);
+ if (wait_event_timeout(ec->wait, ec_transaction_done(ec),
+ msecs_to_jiffies(ACPI_EC_DELAY)))
+ return 0;
+ }
/* missing GPEs, switch back to poll mode */
if (printk_ratelimit())
pr_info(PREFIX "missing confirmations, "
@@ -239,10 +262,10 @@ static int ec_check_sci(struct acpi_ec *ec, u8 state)
static int ec_poll(struct acpi_ec *ec)
{
unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
- msleep(1);
+ udelay(ACPI_EC_UDELAY);
while (time_before(jiffies, delay)) {
gpe_transaction(ec, acpi_ec_read_status(ec));
- msleep(1);
+ udelay(ACPI_EC_UDELAY);
if (ec_transaction_done(ec))
return 0;
}
@@ -259,14 +282,13 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
/* disable GPE during transaction if storm is detected */
if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
- acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+ acpi_disable_gpe(NULL, ec->gpe);
}
/* start transaction */
spin_lock_irqsave(&ec->curr_lock, tmp);
/* following two actions should be kept atomic */
- t->irq_count = 0;
ec->curr = t;
- acpi_ec_write_cmd(ec, ec->curr->command);
+ start_transaction(ec);
if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
spin_unlock_irqrestore(&ec->curr_lock, tmp);
@@ -283,10 +305,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
/* check if we received SCI during transaction */
ec_check_sci(ec, acpi_ec_read_status(ec));
/* it is safe to enable GPE outside of transaction */
- acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+ acpi_enable_gpe(NULL, ec->gpe);
} else if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
t->irq_count > ACPI_EC_STORM_THRESHOLD) {
- pr_debug(PREFIX "GPE storm detected\n");
+ pr_info(PREFIX "GPE storm detected, "
+ "transactions will use polling mode\n");
set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
}
return ret;
@@ -558,17 +581,26 @@ static u32 acpi_ec_gpe_handler(void *data)
pr_debug(PREFIX "~~~> interrupt\n");
status = acpi_ec_read_status(ec);
- gpe_transaction(ec, status);
- if (ec_transaction_done(ec) && (status & ACPI_EC_FLAG_IBF) == 0)
- wake_up(&ec->wait);
+ if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) {
+ gpe_transaction(ec, status);
+ if (ec_transaction_done(ec) &&
+ (status & ACPI_EC_FLAG_IBF) == 0)
+ wake_up(&ec->wait);
+ }
ec_check_sci(ec, status);
if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
!test_bit(EC_FLAGS_NO_GPE, &ec->flags)) {
/* this is non-query, must be confirmation */
- if (printk_ratelimit())
- pr_info(PREFIX "non-query interrupt received,"
+ if (!test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
+ if (printk_ratelimit())
+ pr_info(PREFIX "non-query interrupt received,"
+ " switching to interrupt mode\n");
+ } else {
+ /* hush, STORM switches the mode every transaction */
+ pr_debug(PREFIX "non-query interrupt received,"
" switching to interrupt mode\n");
+ }
set_bit(EC_FLAGS_GPE_MODE, &ec->flags);
}
return ACPI_INTERRUPT_HANDLED;
@@ -736,7 +768,7 @@ static acpi_status
ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
{
acpi_status status;
- unsigned long long tmp;
+ unsigned long long tmp = 0;
struct acpi_ec *ec = context;
status = acpi_walk_resources(handle, METHOD_NAME__CRS,
@@ -751,6 +783,7 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
return status;
ec->gpe = tmp;
/* Use the global lock for all EC transactions? */
+ tmp = 0;
acpi_evaluate_integer(handle, "_GLK", NULL, &tmp);
ec->global_lock = tmp;
ec->handle = handle;
@@ -868,7 +901,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
if (ACPI_FAILURE(status))
return -ENODEV;
acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
- acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+ acpi_enable_gpe(NULL, ec->gpe);
status = acpi_install_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler,
@@ -1007,7 +1040,7 @@ static int acpi_ec_suspend(struct acpi_device *device, pm_message_t state)
/* Stop using GPE */
set_bit(EC_FLAGS_NO_GPE, &ec->flags);
clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
- acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+ acpi_disable_gpe(NULL, ec->gpe);
return 0;
}
@@ -1016,7 +1049,7 @@ static int acpi_ec_resume(struct acpi_device *device)
struct acpi_ec *ec = acpi_driver_data(device);
/* Enable use of GPE back */
clear_bit(EC_FLAGS_NO_GPE, &ec->flags);
- acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+ acpi_enable_gpe(NULL, ec->gpe);
return 0;
}
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index c5e53aae86f..f45c74fe745 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -289,8 +289,6 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
*/
status = acpi_hw_low_disable_gpe(gpe_event_info);
return_ACPI_STATUS(status);
-
- return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index 73bfd6bf962..41554f736b6 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -248,21 +248,15 @@ ACPI_EXPORT_SYMBOL(acpi_set_gpe_type)
* DESCRIPTION: Enable an ACPI event (general purpose)
*
******************************************************************************/
-acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
+acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
acpi_status status = AE_OK;
+ acpi_cpu_flags flags;
struct acpi_gpe_event_info *gpe_event_info;
ACPI_FUNCTION_TRACE(acpi_enable_gpe);
- /* Use semaphore lock if not executing at interrupt level */
-
- if (flags & ACPI_NOT_ISR) {
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
@@ -277,9 +271,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
status = acpi_ev_enable_gpe(gpe_event_info, TRUE);
unlock_and_exit:
- if (flags & ACPI_NOT_ISR) {
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
- }
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return_ACPI_STATUS(status);
}
@@ -299,22 +291,15 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
* DESCRIPTION: Disable an ACPI event (general purpose)
*
******************************************************************************/
-acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
+acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
acpi_status status = AE_OK;
+ acpi_cpu_flags flags;
struct acpi_gpe_event_info *gpe_event_info;
ACPI_FUNCTION_TRACE(acpi_disable_gpe);
- /* Use semaphore lock if not executing at interrupt level */
-
- if (flags & ACPI_NOT_ISR) {
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
-
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
@@ -325,10 +310,8 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
status = acpi_ev_disable_gpe(gpe_event_info);
- unlock_and_exit:
- if (flags & ACPI_NOT_ISR) {
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
- }
+unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return_ACPI_STATUS(status);
}
@@ -521,6 +504,9 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
if (value)
*event_status |= ACPI_EVENT_FLAG_SET;
+ if (acpi_gbl_fixed_event_handlers[event].handler)
+ *event_status |= ACPI_EVENT_FLAG_HANDLE;
+
return_ACPI_STATUS(status);
}
@@ -571,6 +557,9 @@ acpi_get_gpe_status(acpi_handle gpe_device,
status = acpi_hw_get_gpe_status(gpe_event_info, event_status);
+ if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)
+ *event_status |= ACPI_EVENT_FLAG_HANDLE;
+
unlock_and_exit:
if (flags & ACPI_NOT_ISR) {
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 60d54d1f6b1..eaaee1660bd 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -34,7 +34,6 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_FAN_COMPONENT 0x00200000
#define ACPI_FAN_CLASS "fan"
#define ACPI_FAN_FILE_STATE "state"
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 24649ada08d..adec3d15810 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -140,6 +140,46 @@ struct device *acpi_get_physical_device(acpi_handle handle)
EXPORT_SYMBOL(acpi_get_physical_device);
+/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge
+ * This should work in general, but did not on a Lenovo T61 for the
+ * graphics card. But this must be fixed when the PCI device is
+ * bound and the kernel device struct is attached to the acpi device
+ * Note: A success call will increase reference count by one
+ * Do call put_device(dev) on the returned device then
+ */
+struct device *acpi_get_physical_pci_device(acpi_handle handle)
+{
+ struct device *dev;
+ long long device_id;
+ acpi_status status;
+
+ status =
+ acpi_evaluate_integer(handle, "_ADR", NULL, &device_id);
+
+ if (ACPI_FAILURE(status))
+ return NULL;
+
+ /* We need to attempt to determine whether the _ADR refers to a
+ PCI device or not. There's no terribly good way to do this,
+ so the best we can hope for is to assume that there'll never
+ be a device in the host bridge */
+ if (device_id >= 0x10000) {
+ /* It looks like a PCI device. Does it exist? */
+ dev = acpi_get_physical_device(handle);
+ } else {
+ /* It doesn't look like a PCI device. Does its parent
+ exist? */
+ acpi_handle phandle;
+ if (acpi_get_parent(handle, &phandle))
+ return NULL;
+ dev = acpi_get_physical_device(phandle);
+ }
+ if (!dev)
+ return NULL;
+ return dev;
+}
+EXPORT_SYMBOL(acpi_get_physical_pci_device);
+
static int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index fcfdef7b4fd..e52ad91ce2d 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -531,7 +531,7 @@ int __init acpi_irq_penalty_init(void)
return 0;
}
-static int acpi_irq_balance; /* 0: static, 1: balance */
+static int acpi_irq_balance = -1; /* 0: static, 1: balance */
static int acpi_pci_link_allocate(struct acpi_pci_link *link)
{
@@ -950,10 +950,17 @@ device_initcall(irqrouter_init_sysfs);
static int __init acpi_pci_link_init(void)
{
-
if (acpi_noirq)
return 0;
+ if (acpi_irq_balance == -1) {
+ /* no command line switch: enable balancing in IOAPIC mode */
+ if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
+ acpi_irq_balance = 1;
+ else
+ acpi_irq_balance = 0;
+ }
+
acpi_link.count = 0;
INIT_LIST_HEAD(&acpi_link.entries);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 1b8f67d21d5..642554b1b60 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -376,15 +376,9 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
static int __init acpi_pci_root_init(void)
{
-
if (acpi_pci_disabled)
return 0;
- /* DEBUG:
- acpi_dbg_layer = ACPI_PCI_COMPONENT;
- acpi_dbg_level = 0xFFFFFFFF;
- */
-
if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
return -ENODEV;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index a1718e56103..bb7d50dd281 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -44,9 +44,8 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define _COMPONENT ACPI_POWER_COMPONENT
+#define _COMPONENT ACPI_POWER_COMPONENT
ACPI_MODULE_NAME("power");
-#define ACPI_POWER_COMPONENT 0x00800000
#define ACPI_POWER_CLASS "power_resource"
#define ACPI_POWER_DEVICE_NAME "Power Resource"
#define ACPI_POWER_FILE_INFO "info"
@@ -153,7 +152,8 @@ static int acpi_power_get_state(acpi_handle handle, int *state)
ACPI_POWER_RESOURCE_STATE_OFF;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
- acpi_ut_get_node_name(handle), state ? "on" : "off"));
+ acpi_ut_get_node_name(handle),
+ *state ? "on" : "off"));
return 0;
}
@@ -516,11 +516,6 @@ int acpi_power_transition(struct acpi_device *device, int state)
cl = &device->power.states[device->power.state].resources;
tl = &device->power.states[state].resources;
- if (!cl->count && !tl->count) {
- result = -ENODEV;
- goto end;
- }
-
/* TBD: Resources must be ordered. */
/*
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 24a362f8034..34948362f41 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -59,7 +59,6 @@
#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
#define ACPI_PROCESSOR_FILE_INFO "info"
@@ -89,6 +88,7 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr);
static const struct acpi_device_id processor_device_ids[] = {
+ {ACPI_PROCESSOR_OBJECT_HID, 0},
{ACPI_PROCESSOR_HID, 0},
{"", 0},
};
@@ -409,7 +409,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
/* Use the acpiid in MADT to map cpus in case of SMP */
#ifndef CONFIG_SMP
-static int get_cpu_id(acpi_handle handle, u32 acpi_id) {return -1;}
+static int get_cpu_id(acpi_handle handle, int type, u32 acpi_id) { return -1; }
#else
static struct acpi_table_madt *madt;
@@ -428,27 +428,35 @@ static int map_lapic_id(struct acpi_subtable_header *entry,
}
static int map_lsapic_id(struct acpi_subtable_header *entry,
- u32 acpi_id, int *apic_id)
+ int device_declaration, u32 acpi_id, int *apic_id)
{
struct acpi_madt_local_sapic *lsapic =
(struct acpi_madt_local_sapic *)entry;
+ u32 tmp = (lsapic->id << 8) | lsapic->eid;
+
/* Only check enabled APICs*/
- if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
- /* First check against id */
- if (lsapic->processor_id == acpi_id) {
- *apic_id = (lsapic->id << 8) | lsapic->eid;
- return 1;
- /* Check against optional uid */
- } else if (entry->length >= 16 &&
- lsapic->uid == acpi_id) {
- *apic_id = lsapic->uid;
- return 1;
- }
- }
+ if (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))
+ return 0;
+
+ /* Device statement declaration type */
+ if (device_declaration) {
+ if (entry->length < 16)
+ printk(KERN_ERR PREFIX
+ "Invalid LSAPIC with Device type processor (SAPIC ID %#x)\n",
+ tmp);
+ else if (lsapic->uid == acpi_id)
+ goto found;
+ /* Processor statement declaration type */
+ } else if (lsapic->processor_id == acpi_id)
+ goto found;
+
return 0;
+found:
+ *apic_id = tmp;
+ return 1;
}
-static int map_madt_entry(u32 acpi_id)
+static int map_madt_entry(int type, u32 acpi_id)
{
unsigned long madt_end, entry;
int apic_id = -1;
@@ -469,7 +477,7 @@ static int map_madt_entry(u32 acpi_id)
if (map_lapic_id(header, acpi_id, &apic_id))
break;
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
- if (map_lsapic_id(header, acpi_id, &apic_id))
+ if (map_lsapic_id(header, type, acpi_id, &apic_id))
break;
}
entry += header->length;
@@ -477,7 +485,7 @@ static int map_madt_entry(u32 acpi_id)
return apic_id;
}
-static int map_mat_entry(acpi_handle handle, u32 acpi_id)
+static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
@@ -500,7 +508,7 @@ static int map_mat_entry(acpi_handle handle, u32 acpi_id)
if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {
map_lapic_id(header, acpi_id, &apic_id);
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
- map_lsapic_id(header, acpi_id, &apic_id);
+ map_lsapic_id(header, type, acpi_id, &apic_id);
}
exit:
@@ -509,14 +517,14 @@ exit:
return apic_id;
}
-static int get_cpu_id(acpi_handle handle, u32 acpi_id)
+static int get_cpu_id(acpi_handle handle, int type, u32 acpi_id)
{
int i;
int apic_id = -1;
- apic_id = map_mat_entry(handle, acpi_id);
+ apic_id = map_mat_entry(handle, type, acpi_id);
if (apic_id == -1)
- apic_id = map_madt_entry(acpi_id);
+ apic_id = map_madt_entry(type, acpi_id);
if (apic_id == -1)
return apic_id;
@@ -532,15 +540,16 @@ static int get_cpu_id(acpi_handle handle, u32 acpi_id)
Driver Interface
-------------------------------------------------------------------------- */
-static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
+static int acpi_processor_get_info(struct acpi_device *device)
{
acpi_status status = 0;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
- int cpu_index;
+ struct acpi_processor *pr;
+ int cpu_index, device_declaration = 0;
static int cpu0_initialized;
-
+ pr = acpi_driver_data(device);
if (!pr)
return -EINVAL;
@@ -561,22 +570,23 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No bus mastering arbitration control\n"));
- /* Check if it is a Device with HID and UID */
- if (has_uid) {
+ if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) {
+ /*
+ * Declared with "Device" statement; match _UID.
+ * Note that we don't handle string _UIDs yet.
+ */
unsigned long long value;
status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
NULL, &value);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Evaluating processor _UID\n");
+ printk(KERN_ERR PREFIX
+ "Evaluating processor _UID [%#x]\n", status);
return -ENODEV;
}
+ device_declaration = 1;
pr->acpi_id = value;
} else {
- /*
- * Evalute the processor object. Note that it is common on SMP to
- * have the first (boot) processor with a valid PBLK address while
- * all others have a NULL address.
- */
+ /* Declared with "Processor" statement; match ProcessorID */
status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "Evaluating processor object\n");
@@ -584,12 +594,13 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
}
/*
- * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
- * >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c
- */
+ * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+ * >>> 'acpi_get_processor_id(acpi_id, &id)' in
+ * arch/xxx/acpi.c
+ */
pr->acpi_id = object.processor.proc_id;
}
- cpu_index = get_cpu_id(pr->handle, pr->acpi_id);
+ cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == -1) &&
@@ -661,7 +672,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
pr = acpi_driver_data(device);
- result = acpi_processor_get_info(pr, device->flags.unique_id);
+ result = acpi_processor_get_info(device);
if (result) {
/* Processor is physically not present */
return 0;
@@ -761,20 +772,20 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
acpi_bus_generate_proc_event(device, event,
pr->performance_platform_limit);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event,
+ dev_name(&device->dev), event,
pr->performance_platform_limit);
break;
case ACPI_PROCESSOR_NOTIFY_POWER:
acpi_processor_cst_has_changed(pr);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
break;
case ACPI_PROCESSOR_NOTIFY_THROTTLING:
acpi_processor_tstate_has_changed(pr);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 81b40ed5379..5f8d746a9b8 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -59,7 +59,6 @@
#include <acpi/processor.h>
#include <asm/processor.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_idle");
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index dbcf260ea93..0d7b772bef5 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -44,9 +44,9 @@
#endif
#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define ACPI_PROCESSOR_FILE_PERFORMANCE "performance"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index ef34b18f95c..b1eb376fae4 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -40,7 +40,6 @@
#include <acpi/processor.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_thermal");
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 3da2df93d92..a0c38c94a8a 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -38,9 +38,9 @@
#include <asm/uaccess.h>
#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_throttling");
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index 755baf2ca70..a6b662c00b6 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -15,28 +15,9 @@ void acpi_reboot(void)
rr = &acpi_gbl_FADT.reset_register;
- /*
- * Is the ACPI reset register supported?
- *
- * According to ACPI 3.0, FADT.flags.RESET_REG_SUP indicates
- * whether the ACPI reset mechanism is supported.
- *
- * However, some boxes have this bit clear, yet a valid
- * ACPI_RESET_REG & RESET_VALUE, and ACPI reboot is the only
- * mechanism that works for them after S3.
- *
- * This suggests that other operating systems may not be checking
- * the RESET_REG_SUP bit, and are using other means to decide
- * whether to use the ACPI reboot mechanism or not.
- *
- * So when acpi reboot is requested,
- * only the reset_register is checked. If the following
- * conditions are met, it indicates that the reset register is supported.
- * a. reset_register is not zero
- * b. the access width is eight
- * c. the bit_offset is zero
- */
- if (!(rr->address) || rr->bit_width != 8 || rr->bit_offset != 0)
+ /* Is the reset register supported? */
+ if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
+ rr->bit_width != 8 || rr->bit_offset != 0)
return;
reset_value = acpi_gbl_FADT.reset_value;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index a9dda8e0f9f..bd5253ee5c8 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -109,8 +109,7 @@ static int acpi_bus_hot_remove_device(void *context)
return 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Hot-removing device %s...\n", device->dev.bus_id));
-
+ "Hot-removing device %s...\n", dev_name(&device->dev)));
if (acpi_bus_trim(device, 1)) {
printk(KERN_ERR PREFIX
@@ -460,7 +459,7 @@ static int acpi_device_register(struct acpi_device *device,
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
- sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
+ dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
if (device->parent) {
list_add_tail(&device->node, &device->parent->children);
@@ -484,7 +483,8 @@ static int acpi_device_register(struct acpi_device *device,
result = acpi_device_setup_files(device);
if(result)
- printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n", device->dev.bus_id);
+ printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
+ dev_name(&device->dev));
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
@@ -919,36 +919,6 @@ static void acpi_device_get_busid(struct acpi_device *device,
}
}
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
- acpi_handle h_dummy;
-
- if (!device)
- return -EINVAL;
-
- /* Since there is no HID, CID for ACPI Video drivers, we have
- * to check well known required nodes for each feature we support.
- */
-
- /* Does this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
- return 0;
-
- /* Does this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
- return 0;
-
- /* Does this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
- return 0;
-
- return -ENODEV;
-}
-
/*
* acpi_bay_match - see if a device is an ejectable driver bay
*
@@ -1031,7 +1001,7 @@ static void acpi_device_set_id(struct acpi_device *device,
will get autoloaded and the device might still match
against another driver.
*/
- if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+ if (acpi_is_video_device(device))
cid_add = ACPI_VIDEO_HID;
else if (ACPI_SUCCESS(acpi_bay_match(device)))
cid_add = ACPI_BAY_HID;
@@ -1043,7 +1013,7 @@ static void acpi_device_set_id(struct acpi_device *device,
hid = ACPI_POWER_HID;
break;
case ACPI_BUS_TYPE_PROCESSOR:
- hid = ACPI_PROCESSOR_HID;
+ hid = ACPI_PROCESSOR_OBJECT_HID;
break;
case ACPI_BUS_TYPE_SYSTEM:
hid = ACPI_SYSTEM_HID;
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 631ee2ee2ca..4dbc2271acf 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -367,7 +367,7 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
if (ldev)
seq_printf(seq, "%s:%s",
ldev->bus ? ldev->bus->name : "no-bus",
- ldev->bus_id);
+ dev_name(ldev));
seq_printf(seq, "\n");
put_device(ldev);
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c
index 38655eb132d..dea4c23df76 100644
--- a/drivers/acpi/sleep/wakeup.c
+++ b/drivers/acpi/sleep/wakeup.c
@@ -88,7 +88,7 @@ void acpi_enable_wakeup_device(u8 sleep_state)
spin_unlock(&acpi_device_lock);
if (!dev->wakeup.flags.run_wake)
acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_ISR);
+ dev->wakeup.gpe_number);
spin_lock(&acpi_device_lock);
}
spin_unlock(&acpi_device_lock);
@@ -122,7 +122,7 @@ void acpi_disable_wakeup_device(u8 sleep_state)
ACPI_GPE_TYPE_WAKE_RUN);
/* Re-enable it, since set_gpe_type will disable it */
acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ dev->wakeup.gpe_number);
spin_lock(&acpi_device_lock);
}
continue;
@@ -133,7 +133,7 @@ void acpi_disable_wakeup_device(u8 sleep_state)
/* Never disable run-wake GPE */
if (!dev->wakeup.flags.run_wake) {
acpi_disable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ dev->wakeup.gpe_number);
acpi_clear_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number, ACPI_NOT_ISR);
}
@@ -162,7 +162,7 @@ static int __init acpi_wakeup_device_init(void)
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_WAKE_RUN);
acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ dev->wakeup.gpe_number);
dev->wakeup.state.enabled = 1;
spin_lock(&acpi_device_lock);
}
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 1d74171b794..6e4107f8240 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -78,9 +78,15 @@ static ssize_t acpi_table_show(struct kobject *kobj,
container_of(bin_attr, struct acpi_table_attr, attr);
struct acpi_table_header *table_header = NULL;
acpi_status status;
+ char name[ACPI_NAME_SIZE];
+
+ if (strncmp(table_attr->name, "NULL", 4))
+ memcpy(name, table_attr->name, ACPI_NAME_SIZE);
+ else
+ memcpy(name, "\0\0\0\0", 4);
status =
- acpi_get_table(table_attr->name, table_attr->instance,
+ acpi_get_table(name, table_attr->instance,
&table_header);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -95,21 +101,24 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
struct acpi_table_header *header = NULL;
struct acpi_table_attr *attr = NULL;
- memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+ if (table_header->signature[0] != '\0')
+ memcpy(table_attr->name, table_header->signature,
+ ACPI_NAME_SIZE);
+ else
+ memcpy(table_attr->name, "NULL", 4);
list_for_each_entry(attr, &acpi_table_attr_list, node) {
- if (!memcmp(table_header->signature, attr->name,
- ACPI_NAME_SIZE))
+ if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
if (table_attr->instance < attr->instance)
table_attr->instance = attr->instance;
}
table_attr->instance++;
if (table_attr->instance > 1 || (table_attr->instance == 1 &&
- !acpi_get_table(table_header->
- signature, 2,
- &header)))
- sprintf(table_attr->name + 4, "%d", table_attr->instance);
+ !acpi_get_table
+ (table_header->signature, 2, &header)))
+ sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
+ table_attr->instance);
table_attr->attr.size = 0;
table_attr->attr.read = acpi_table_show;
@@ -167,7 +176,6 @@ static int acpi_system_sysfs_init(void)
#define COUNT_ERROR 2 /* other */
#define NUM_COUNTERS_EXTRA 3
-#define ACPI_EVENT_VALID 0x01
struct event_counter {
u32 count;
u32 flags;
@@ -312,12 +320,6 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
result = acpi_get_event_status(index - num_gpes, status);
- /*
- * sleep/power button GPE/Fixed Event is enabled after acpi_system_init,
- * check the status at runtime and mark it as valid once it's enabled
- */
- if (!result && (*status & ACPI_EVENT_FLAG_ENABLED))
- all_counters[index].flags |= ACPI_EVENT_VALID;
end:
return result;
}
@@ -346,12 +348,14 @@ static ssize_t counter_show(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID))
- size += sprintf(buf + size, " invalid");
+ if (!(status & ACPI_EVENT_FLAG_HANDLE))
+ size += sprintf(buf + size, " invalid");
else if (status & ACPI_EVENT_FLAG_ENABLED)
- size += sprintf(buf + size, " enable");
+ size += sprintf(buf + size, " enabled");
+ else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
+ size += sprintf(buf + size, " wake_enabled");
else
- size += sprintf(buf + size, " disable");
+ size += sprintf(buf + size, " disabled");
end:
size += sprintf(buf + size, "\n");
@@ -385,7 +389,7 @@ static ssize_t counter_set(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID)) {
+ if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
printk(KERN_WARNING PREFIX
"Can not change Invalid GPE/Fixed Event status\n");
return -EINVAL;
@@ -394,10 +398,10 @@ static ssize_t counter_set(struct kobject *kobj,
if (index < num_gpes) {
if (!strcmp(buf, "disable\n") &&
(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_disable_gpe(handle, index, ACPI_NOT_ISR);
+ result = acpi_disable_gpe(handle, index);
else if (!strcmp(buf, "enable\n") &&
!(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_enable_gpe(handle, index, ACPI_NOT_ISR);
+ result = acpi_enable_gpe(handle, index);
else if (!strcmp(buf, "clear\n") &&
(status & ACPI_EVENT_FLAG_SET))
result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR);
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index 2c7885e7ffb..2817158fb6a 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -304,7 +304,7 @@ static void acpi_tb_convert_fadt(void)
* The ACPI 1.0 reserved fields that will be zeroed are the bytes located at
* offset 45, 55, 95, and the word located at offset 109, 110.
*/
- if (acpi_gbl_FADT.header.revision < 3) {
+ if (acpi_gbl_FADT.header.revision < FADT2_REVISION_ID) {
acpi_gbl_FADT.preferred_profile = 0;
acpi_gbl_FADT.pstate_control = 0;
acpi_gbl_FADT.cst_control = 0;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index ad6cae938f0..073ff09218a 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -47,7 +47,6 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_THERMAL_COMPONENT 0x04000000
#define ACPI_THERMAL_CLASS "thermal_zone"
#define ACPI_THERMAL_DEVICE_NAME "Thermal Zone"
#define ACPI_THERMAL_FILE_STATE "state"
@@ -576,7 +575,7 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
- tz->device->dev.bus_id,
+ dev_name(&tz->device->dev),
ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
@@ -605,7 +604,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
- tz->device->dev.bus_id,
+ dev_name(&tz->device->dev),
ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
@@ -1592,14 +1591,14 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
acpi_thermal_check(tz);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
break;
case ACPI_THERMAL_NOTIFY_DEVICES:
acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES);
acpi_thermal_check(tz);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a29b0ccac65..baa44192972 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -41,7 +41,6 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_VIDEO_COMPONENT 0x08000000
#define ACPI_VIDEO_CLASS "video"
#define ACPI_VIDEO_BUS_NAME "Video Bus"
#define ACPI_VIDEO_DEVICE_NAME "Video Device"
@@ -739,7 +738,8 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->cap._DSS = 1;
}
- max_level = acpi_video_init_brightness(device);
+ if (acpi_video_backlight_support())
+ max_level = acpi_video_init_brightness(device);
if (device->cap._BCL && device->cap._BCM && max_level > 0) {
int result;
@@ -785,18 +785,21 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
printk(KERN_ERR PREFIX "Create sysfs link\n");
}
- if (device->cap._DCS && device->cap._DSS){
- static int count = 0;
- char *name;
- name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
- if (!name)
- return;
- sprintf(name, "acpi_video%d", count++);
- device->output_dev = video_output_register(name,
- NULL, device, &acpi_output_properties);
- kfree(name);
+
+ if (acpi_video_display_switch_support()) {
+
+ if (device->cap._DCS && device->cap._DSS) {
+ static int count;
+ char *name;
+ name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+ if (!name)
+ return;
+ sprintf(name, "acpi_video%d", count++);
+ device->output_dev = video_output_register(name,
+ NULL, device, &acpi_output_properties);
+ kfree(name);
+ }
}
- return;
}
/*
@@ -842,11 +845,16 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
static int acpi_video_bus_check(struct acpi_video_bus *video)
{
acpi_status status = -ENOENT;
-
+ struct device *dev;
if (!video)
return -EINVAL;
+ dev = acpi_get_physical_pci_device(video->device->handle);
+ if (!dev)
+ return -ENODEV;
+ put_device(dev);
+
/* Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
*/
@@ -2094,12 +2102,6 @@ static int __init acpi_video_init(void)
{
int result = 0;
-
- /*
- acpi_dbg_level = 0xFFFFFFFF;
- acpi_dbg_layer = 0x08000000;
- */
-
acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
if (!acpi_video_dir)
return -ENODEV;
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
new file mode 100644
index 00000000000..f022eb6f563
--- /dev/null
+++ b/drivers/acpi/video_detect.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2008 SuSE Linux Products GmbH
+ * Thomas Renninger <trenn@suse.de>
+ *
+ * May be copied or modified under the terms of the GNU General Public License
+ *
+ * video_detect.c:
+ * Provides acpi_is_video_device() for early scanning of ACPI devices in scan.c
+ * There a Linux specific (Spec does not provide a HID for video devices) is
+ * assinged
+ *
+ * After PCI devices are glued with ACPI devices
+ * acpi_get_physical_pci_device() can be called to identify ACPI graphics
+ * devices for which a real graphics card is plugged in
+ *
+ * Now acpi_video_get_capabilities() can be called to check which
+ * capabilities the graphics cards plugged in support. The check for general
+ * video capabilities will be triggered by the first caller of
+ * acpi_video_get_capabilities(NULL); which will happen when the first
+ * backlight (or display output) switching supporting driver calls:
+ * acpi_video_backlight_support();
+ *
+ * Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
+ * are available, video.ko should be used to handle the device.
+ *
+ * Otherwise vendor specific drivers like thinkpad_acpi, asus_acpi,
+ * sony_acpi,... can take care about backlight brightness and display output
+ * switching.
+ *
+ * If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
+ * this file will not be compiled, acpi_video_get_capabilities() and
+ * acpi_video_backlight_support() will always return 0 and vendor specific
+ * drivers always can handle backlight.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+
+ACPI_MODULE_NAME("video");
+#define _COMPONENT ACPI_VIDEO_COMPONENT
+
+static long acpi_video_support;
+static bool acpi_video_caps_checked;
+
+static acpi_status
+acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
+ void **retyurn_value)
+{
+ long *cap = context;
+ acpi_handle h_dummy;
+
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "_BCM", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(handle, "_BCL", &h_dummy))) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
+ "support\n"));
+ *cap |= ACPI_VIDEO_BACKLIGHT;
+ /* We have backlight support, no need to scan further */
+ return AE_CTRL_TERMINATE;
+ }
+ return 0;
+}
+
+/* Returns true if the device is a video device which can be handled by
+ * video.ko.
+ * The device will get a Linux specific CID added in scan.c to
+ * identify the device as an ACPI graphics device
+ * Be aware that the graphics device may not be physically present
+ * Use acpi_video_get_capabilities() to detect general ACPI video
+ * capabilities of present cards
+ */
+long acpi_is_video_device(struct acpi_device *device)
+{
+ acpi_handle h_dummy;
+ long video_caps = 0;
+
+ if (!device)
+ return 0;
+
+ /* Does this device able to support video switching ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
+ video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;
+
+ /* Does this device able to retrieve a video ROM ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
+ video_caps |= ACPI_VIDEO_ROM_AVAILABLE;
+
+ /* Does this device able to configure which video head to be POSTed ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
+ video_caps |= ACPI_VIDEO_DEVICE_POSTING;
+
+ /* Only check for backlight functionality if one of the above hit. */
+ if (video_caps)
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, device->handle,
+ ACPI_UINT32_MAX, acpi_backlight_cap_match,
+ &video_caps, NULL);
+
+ return video_caps;
+}
+EXPORT_SYMBOL(acpi_is_video_device);
+
+static acpi_status
+find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ long *cap = context;
+ struct device *dev;
+ struct acpi_device *acpi_dev;
+
+ const struct acpi_device_id video_ids[] = {
+ {ACPI_VIDEO_HID, 0},
+ {"", 0},
+ };
+ if (acpi_bus_get_device(handle, &acpi_dev))
+ return AE_OK;
+
+ if (!acpi_match_device_ids(acpi_dev, video_ids)) {
+ dev = acpi_get_physical_pci_device(handle);
+ if (!dev)
+ return AE_OK;
+ put_device(dev);
+ *cap |= acpi_is_video_device(acpi_dev);
+ }
+ return AE_OK;
+}
+
+/*
+ * Returns the video capabilities of a specific ACPI graphics device
+ *
+ * if NULL is passed as argument all ACPI devices are enumerated and
+ * all graphics capabilities of physically present devices are
+ * summerized and returned. This is cached and done only once.
+ */
+long acpi_video_get_capabilities(acpi_handle graphics_handle)
+{
+ long caps = 0;
+ struct acpi_device *tmp_dev;
+ acpi_status status;
+
+ if (acpi_video_caps_checked && graphics_handle == NULL)
+ return acpi_video_support;
+
+ if (!graphics_handle) {
+ /* Only do the global walk through all graphics devices once */
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, find_video,
+ &caps, NULL);
+ /* There might be boot param flags set already... */
+ acpi_video_support |= caps;
+ acpi_video_caps_checked = 1;
+ /* Add blacklists here. Be careful to use the right *DMI* bits
+ * to still be able to override logic via boot params, e.g.:
+ *
+ * if (dmi_name_in_vendors("XY")) {
+ * acpi_video_support |=
+ * ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR;
+ * acpi_video_support |=
+ * ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
+ *}
+ */
+ } else {
+ status = acpi_bus_get_device(graphics_handle, &tmp_dev);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status, "Invalid device"));
+ return 0;
+ }
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, graphics_handle,
+ ACPI_UINT32_MAX, find_video,
+ &caps, NULL);
+ }
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "We have 0x%lX video support %s %s\n",
+ graphics_handle ? caps : acpi_video_support,
+ graphics_handle ? "on device " : "in general",
+ graphics_handle ? acpi_device_bid(tmp_dev) : ""));
+ return caps;
+}
+EXPORT_SYMBOL(acpi_video_get_capabilities);
+
+/* Returns true if video.ko can do backlight switching */
+int acpi_video_backlight_support(void)
+{
+ /*
+ * We must check whether the ACPI graphics device is physically plugged
+ * in. Therefore this must be called after binding PCI and ACPI devices
+ */
+ if (!acpi_video_caps_checked)
+ acpi_video_get_capabilities(NULL);
+
+ /* First check for boot param -> highest prio */
+ if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR)
+ return 0;
+ else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO)
+ return 1;
+
+ /* Then check for DMI blacklist -> second highest prio */
+ if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VENDOR)
+ return 0;
+ else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VIDEO)
+ return 1;
+
+ /* Then go the default way */
+ return acpi_video_support & ACPI_VIDEO_BACKLIGHT;
+}
+EXPORT_SYMBOL(acpi_video_backlight_support);
+
+/*
+ * Returns true if video.ko can do display output switching.
+ * This does not work well/at all with binary graphics drivers
+ * which disable system io ranges and do it on their own.
+ */
+int acpi_video_display_switch_support(void)
+{
+ if (!acpi_video_caps_checked)
+ acpi_video_get_capabilities(NULL);
+
+ if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR)
+ return 0;
+ else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO)
+ return 1;
+
+ if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR)
+ return 0;
+ else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO)
+ return 1;
+
+ return acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING;
+}
+EXPORT_SYMBOL(acpi_video_display_switch_support);
+
+/*
+ * Use acpi_display_output=vendor/video or acpi_backlight=vendor/video
+ * To force that backlight or display output switching is processed by vendor
+ * specific acpi drivers or video.ko driver.
+ */
+int __init acpi_backlight(char *str)
+{
+ if (str == NULL || *str == '\0')
+ return 1;
+ else {
+ if (!strcmp("vendor", str))
+ acpi_video_support |=
+ ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR;
+ if (!strcmp("video", str))
+ acpi_video_support |=
+ ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
+ }
+ return 1;
+}
+__setup("acpi_backlight=", acpi_backlight);
+
+int __init acpi_display_output(char *str)
+{
+ if (str == NULL || *str == '\0')
+ return 1;
+ else {
+ if (!strcmp("vendor", str))
+ acpi_video_support |=
+ ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR;
+ if (!strcmp("video", str))
+ acpi_video_support |=
+ ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
+ }
+ return 1;
+}
+__setup("acpi_display_output=", acpi_display_output);
diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
index 47cd7baf9b1..8a8b377712c 100644
--- a/drivers/acpi/wmi.c
+++ b/drivers/acpi/wmi.c
@@ -660,7 +660,7 @@ static void acpi_wmi_notify(acpi_handle handle, u32 event, void *data)
wblock->handler(event, wblock->handler_data);
acpi_bus_generate_netlink_event(
- device->pnp.device_class, device->dev.bus_id,
+ device->pnp.device_class, dev_name(&device->dev),
event, 0);
break;
}