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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

Browse Source 
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (179 commits)
  ACPI: Fix acpi_processor_idle and idle= boot parameters interaction
  acpi: fix section mismatch warning in pnpacpi
  intel_menlo: fix build warning
  ACPI: Cleanup: Remove unneeded, multiple local dummy variables
  ACPI: video - fix permissions on some proc entries
  ACPI: video - properly handle errors when registering proc elements
  ACPI: video - do not store invalid entries in attached_array list
  ACPI: re-name acpi_pm_ops to acpi_suspend_ops
  ACER_WMI/ASUS_LAPTOP: fix build bug
  thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failed
  ACPI: check a return value correctly in acpi_power_get_context()
  #if 0 acpi/bay.c:eject_removable_drive()
  eeepc-laptop: add hwmon fan control
  eeepc-laptop: add backlight
  eeepc-laptop: add base driver
  ACPI: thinkpad-acpi: bump up version to 0.20
  ACPI: thinkpad-acpi: fix selects in Kconfig
  ACPI: thinkpad-acpi: use a private workqueue
  ACPI: thinkpad-acpi: fluff really minor fix
  ACPI: thinkpad-acpi: use uppercase for "LED" on user documentation
  ...

Fixed conflicts in drivers/acpi/video.c and drivers/misc/intel_menlow.c
manually.
This commit is contained in:
Linus Torvalds
2008-04-30 11:52:52 -07:00
parent ccf2779544 008238b54a
commit 08acd4f8af
196 changed files with 6677 additions and 3664 deletions
Download Patch File Download Diff File Expand all files Collapse all files

240
drivers/acpi/ec.c
View File

@@ -73,38 +73,14 @@ enum ec_event {
#define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */
#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
#define ACPI_EC_UDELAY 100 /* Wait 100us before polling EC again */
enum {
EC_FLAGS_WAIT_GPE = 0, /* Don't check status until GPE arrives */
EC_FLAGS_QUERY_PENDING, /* Query is pending */
EC_FLAGS_GPE_MODE, /* Expect GPE to be sent for status change */
EC_FLAGS_NO_ADDRESS_GPE, /* Expect GPE only for non-address event */
EC_FLAGS_ADDRESS, /* Address is being written */
EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */
EC_FLAGS_WDATA, /* Data is being written */
EC_FLAGS_NO_OBF1_GPE, /* Don't expect GPE before read */
};
static int acpi_ec_remove(struct acpi_device *device, int type);
static int acpi_ec_start(struct acpi_device *device);
static int acpi_ec_stop(struct acpi_device *device, int type);
static int acpi_ec_add(struct acpi_device *device);
static const struct acpi_device_id ec_device_ids[] = {
{"PNP0C09", 0},
{"", 0},
};
static struct acpi_driver acpi_ec_driver = {
.name = "ec",
.class = ACPI_EC_CLASS,
.ids = ec_device_ids,
.ops = {
.add = acpi_ec_add,
.remove = acpi_ec_remove,
.start = acpi_ec_start,
.stop = acpi_ec_stop,
},
EC_FLAGS_NO_GPE, /* Don't use GPE mode */
EC_FLAGS_RESCHEDULE_POLL /* Re-schedule poll */
};
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
@@ -129,6 +105,8 @@ static struct acpi_ec {
struct mutex lock;
wait_queue_head_t wait;
struct list_head list;
struct delayed_work work;
atomic_t irq_count;
u8 handlers_installed;
} *boot_ec, *first_ec;
@@ -177,65 +155,52 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
return 0;
}
static void ec_schedule_ec_poll(struct acpi_ec *ec)
{
if (test_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags))
schedule_delayed_work(&ec->work,
msecs_to_jiffies(ACPI_EC_DELAY));
}
static void ec_switch_to_poll_mode(struct acpi_ec *ec)
{
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);
set_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
}
static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{
int ret = 0;
if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
force_poll = 1;
if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
force_poll = 1;
if (unlikely(test_bit(EC_FLAGS_WDATA, &ec->flags) &&
test_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags)))
force_poll = 1;
atomic_set(&ec->irq_count, 0);
if (likely(test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) &&
likely(!force_poll)) {
if (wait_event_timeout(ec->wait, acpi_ec_check_status(ec, event),
msecs_to_jiffies(ACPI_EC_DELAY)))
goto end;
return 0;
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (acpi_ec_check_status(ec, event)) {
if (event == ACPI_EC_EVENT_OBF_1) {
/* miss OBF_1 GPE, don't expect it */
pr_info(PREFIX "missing OBF confirmation, "
"don't expect it any longer.\n");
set_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags);
} else if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
/* miss address GPE, don't expect it anymore */
pr_info(PREFIX "missing address confirmation, "
"don't expect it any longer.\n");
set_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags);
} else if (test_bit(EC_FLAGS_WDATA, &ec->flags)) {
/* miss write data GPE, don't expect it */
pr_info(PREFIX "missing write data confirmation, "
"don't expect it any longer.\n");
set_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags);
} else {
/* missing GPEs, switch back to poll mode */
if (printk_ratelimit())
pr_info(PREFIX "missing confirmations, "
/* missing GPEs, switch back to poll mode */
if (printk_ratelimit())
pr_info(PREFIX "missing confirmations, "
"switch off interrupt mode.\n");
clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
}
goto end;
ec_switch_to_poll_mode(ec);
ec_schedule_ec_poll(ec);
return 0;
}
} else {
unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
while (time_before(jiffies, delay)) {
if (acpi_ec_check_status(ec, event))
goto end;
return 0;
udelay(ACPI_EC_UDELAY);
}
}
pr_err(PREFIX "acpi_ec_wait timeout,"
" status = %d, expect_event = %d\n",
acpi_ec_read_status(ec), event);
ret = -ETIME;
end:
clear_bit(EC_FLAGS_ADDRESS, &ec->flags);
return ret;
pr_err(PREFIX "acpi_ec_wait timeout, status = 0x%2.2x, event = %s\n",
acpi_ec_read_status(ec),
(event == ACPI_EC_EVENT_OBF_1) ? "\"b0=1\"" : "\"b1=0\"");
return -ETIME;
}
static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
@@ -245,8 +210,8 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
{
int result = 0;
set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
acpi_ec_write_cmd(ec, command);
pr_debug(PREFIX "transaction start\n");
acpi_ec_write_cmd(ec, command);
for (; wdata_len > 0; --wdata_len) {
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll);
if (result) {
@@ -254,15 +219,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
"write_cmd timeout, command = %d\n", command);
goto end;
}
/* mark the address byte written to EC */
if (rdata_len + wdata_len > 1)
set_bit(EC_FLAGS_ADDRESS, &ec->flags);
set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
acpi_ec_write_data(ec, *(wdata++));
}
if (!rdata_len) {
set_bit(EC_FLAGS_WDATA, &ec->flags);
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll);
if (result) {
pr_err(PREFIX
@@ -527,46 +488,50 @@ static u32 acpi_ec_gpe_handler(void *data)
{
acpi_status status = AE_OK;
struct acpi_ec *ec = data;
u8 state = acpi_ec_read_status(ec);
pr_debug(PREFIX "~~~> interrupt\n");
atomic_inc(&ec->irq_count);
if (atomic_read(&ec->irq_count) > 5) {
pr_err(PREFIX "GPE storm detected, disabling EC GPE\n");
ec_switch_to_poll_mode(ec);
goto end;
}
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))
wake_up(&ec->wait);
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_SCI) {
if (state & ACPI_EC_FLAG_SCI) {
if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
status = acpi_os_execute(OSL_EC_BURST_HANDLER,
acpi_ec_gpe_query, ec);
} else if (unlikely(!test_bit(EC_FLAGS_GPE_MODE, &ec->flags))) {
} else if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
!test_bit(EC_FLAGS_NO_GPE, &ec->flags) &&
in_interrupt()) {
/* this is non-query, must be confirmation */
if (printk_ratelimit())
pr_info(PREFIX "non-query interrupt received,"
" switching to interrupt mode\n");
set_bit(EC_FLAGS_GPE_MODE, &ec->flags);
clear_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
}
end:
ec_schedule_ec_poll(ec);
return ACPI_SUCCESS(status) ?
ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
}
static void do_ec_poll(struct work_struct *work)
{
struct acpi_ec *ec = container_of(work, struct acpi_ec, work.work);
atomic_set(&ec->irq_count, 0);
(void)acpi_ec_gpe_handler(ec);
}
/* --------------------------------------------------------------------------
Address Space Management
-------------------------------------------------------------------------- */
static acpi_status
acpi_ec_space_setup(acpi_handle region_handle,
u32 function, void *handler_context, void **return_context)
{
/*
* The EC object is in the handler context and is needed
* when calling the acpi_ec_space_handler.
*/
*return_context = (function != ACPI_REGION_DEACTIVATE) ?
handler_context : NULL;
return AE_OK;
}
static acpi_status
acpi_ec_space_handler(u32 function, acpi_physical_address address,
u32 bits, acpi_integer *value,
@@ -704,6 +669,8 @@ static struct acpi_ec *make_acpi_ec(void)
mutex_init(&ec->lock);
init_waitqueue_head(&ec->wait);
INIT_LIST_HEAD(&ec->list);
INIT_DELAYED_WORK_DEFERRABLE(&ec->work, do_ec_poll);
atomic_set(&ec->irq_count, 0);
return ec;
}
@@ -736,17 +703,21 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
if (ACPI_FAILURE(status))
return status;
/* Find and register all query methods */
acpi_walk_namespace(ACPI_TYPE_METHOD, handle, 1,
acpi_ec_register_query_methods, ec, NULL);
/* Use the global lock for all EC transactions? */
acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
ec->handle = handle;
return AE_CTRL_TERMINATE;
}
static void ec_poll_stop(struct acpi_ec *ec)
{
clear_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
cancel_delayed_work(&ec->work);
}
static void ec_remove_handlers(struct acpi_ec *ec)
{
ec_poll_stop(ec);
if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
pr_err(PREFIX "failed to remove space handler\n");
@@ -766,31 +737,28 @@ static int acpi_ec_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_EC_CLASS);
/* Check for boot EC */
if (boot_ec) {
if (boot_ec->handle == device->handle) {
/* Pre-loaded EC from DSDT, just move pointer */
ec = boot_ec;
boot_ec = NULL;
goto end;
} else if (boot_ec->handle == ACPI_ROOT_OBJECT) {
/* ECDT-based EC, time to shut it down */
ec_remove_handlers(boot_ec);
kfree(boot_ec);
first_ec = boot_ec = NULL;
if (boot_ec &&
(boot_ec->handle == device->handle ||
boot_ec->handle == ACPI_ROOT_OBJECT)) {
ec = boot_ec;
boot_ec = NULL;
} else {
ec = make_acpi_ec();
if (!ec)
return -ENOMEM;
if (ec_parse_device(device->handle, 0, ec, NULL) !=
AE_CTRL_TERMINATE) {
kfree(ec);
return -EINVAL;
}
}
ec = make_acpi_ec();
if (!ec)
return -ENOMEM;
if (ec_parse_device(device->handle, 0, ec, NULL) !=
AE_CTRL_TERMINATE) {
kfree(ec);
return -EINVAL;
}
ec->handle = device->handle;
end:
/* Find and register all query methods */
acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1,
acpi_ec_register_query_methods, ec, NULL);
if (!first_ec)
first_ec = ec;
acpi_driver_data(device) = ec;
@@ -865,7 +833,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
status = acpi_install_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler,
&acpi_ec_space_setup, ec);
NULL, ec);
if (ACPI_FAILURE(status)) {
acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
return -ENODEV;
@@ -892,6 +860,7 @@ static int acpi_ec_start(struct acpi_device *device)
/* EC is fully operational, allow queries */
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
ec_schedule_ec_poll(ec);
return ret;
}
@@ -919,6 +888,11 @@ int __init acpi_boot_ec_enable(void)
return -EFAULT;
}
static const struct acpi_device_id ec_device_ids[] = {
{"PNP0C09", 0},
{"", 0},
};
int __init acpi_ec_ecdt_probe(void)
{
int ret;
@@ -939,6 +913,7 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->data_addr = ecdt_ptr->data.address;
boot_ec->gpe = ecdt_ptr->gpe;
boot_ec->handle = ACPI_ROOT_OBJECT;
acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
} else {
/* This workaround is needed only on some broken machines,
* which require early EC, but fail to provide ECDT */
@@ -968,6 +943,39 @@ int __init acpi_ec_ecdt_probe(void)
return -ENODEV;
}
static int acpi_ec_suspend(struct acpi_device *device, pm_message_t state)
{
struct acpi_ec *ec = acpi_driver_data(device);
/* 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);
return 0;
}
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);
return 0;
}
static struct acpi_driver acpi_ec_driver = {
.name = "ec",
.class = ACPI_EC_CLASS,
.ids = ec_device_ids,
.ops = {
.add = acpi_ec_add,
.remove = acpi_ec_remove,
.start = acpi_ec_start,
.stop = acpi_ec_stop,
.suspend = acpi_ec_suspend,
.resume = acpi_ec_resume,
},
};
static int __init acpi_ec_init(void)
{
int result = 0;