diff options
Diffstat (limited to 'drivers/acpi')
34 files changed, 174 insertions, 86 deletions
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index b6ed60b57b0d..56205a0b85df 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -25,6 +25,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/types.h> #ifdef CONFIG_ACPI_PROCFS_POWER diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 3597d73f28f6..d98571385656 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -30,6 +30,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/memory_hotplug.h> +#include <linux/slab.h> #include <acpi/acpi_drivers.h> #define ACPI_MEMORY_DEVICE_CLASS "memory" diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 7e52295f1ecc..19dacfd43163 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -27,6 +27,7 @@ #include <linux/freezer.h> #include <linux/cpu.h> #include <linux/clockchips.h> +#include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 837de669743a..78c55508aff5 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -117,19 +117,14 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) if (ACPI_FAILURE(status)) return_ACPI_STATUS(status); - /* Mark wake-enabled or HW enable, or both */ - - if (gpe_event_info->runtime_count) { - /* Clear the GPE (of stale events), then enable it */ - status = acpi_hw_clear_gpe(gpe_event_info); - if (ACPI_FAILURE(status)) - return_ACPI_STATUS(status); - - /* Enable the requested runtime GPE */ - status = acpi_hw_write_gpe_enable_reg(gpe_event_info); - } + /* Clear the GPE (of stale events), then enable it */ + status = acpi_hw_clear_gpe(gpe_event_info); + if (ACPI_FAILURE(status)) + return_ACPI_STATUS(status); - return_ACPI_STATUS(AE_OK); + /* Enable the requested GPE */ + status = acpi_hw_write_gpe_enable_reg(gpe_event_info); + return_ACPI_STATUS(status); } /******************************************************************************* diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index edf62bf5b266..2fbfe51fb141 100644 --- a/drivers/acpi/acpica/exprep.c +++ b/drivers/acpi/acpica/exprep.c @@ -468,6 +468,23 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info) acpi_ut_add_reference(obj_desc->field.region_obj); + /* allow full data read from EC address space */ + if (obj_desc->field.region_obj->region.space_id == + ACPI_ADR_SPACE_EC) { + if (obj_desc->common_field.bit_length > 8) { + unsigned width = + ACPI_ROUND_BITS_UP_TO_BYTES( + obj_desc->common_field.bit_length); + // access_bit_width is u8, don't overflow it + if (width > 8) + width = 8; + obj_desc->common_field.access_byte_width = + width; + obj_desc->common_field.access_bit_width = + 8 * width; + } + } + ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "RegionField: BitOff %X, Off %X, Gran %X, Region %p\n", obj_desc->field.start_field_bit_offset, diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 75f39f2c166d..3026e3fa83ef 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -32,6 +32,7 @@ #include <linux/jiffies.h> #include <linux/async.h> #include <linux/dmi.h> +#include <linux/slab.h> #ifdef CONFIG_ACPI_PROCFS_POWER #include <linux/proc_fs.h> @@ -567,13 +568,13 @@ static int acpi_battery_update(struct acpi_battery *battery) result = acpi_battery_get_status(battery); if (result) return result; -#ifdef CONFIG_ACPI_SYSFS_POWER if (!acpi_battery_present(battery)) { +#ifdef CONFIG_ACPI_SYSFS_POWER sysfs_remove_battery(battery); +#endif battery->update_time = 0; return 0; } -#endif if (!battery->update_time || old_present != acpi_battery_present(battery)) { result = acpi_battery_get_info(battery); @@ -879,7 +880,7 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event) #ifdef CONFIG_ACPI_SYSFS_POWER /* acpi_battery_update could remove power_supply object */ if (battery->bat.dev) - kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE); + power_supply_changed(&battery->bat); #endif } diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index b70cd3756142..37132dc2da03 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -32,6 +32,7 @@ #include <linux/device.h> #include <linux/proc_fs.h> #include <linux/acpi.h> +#include <linux/slab.h> #ifdef CONFIG_X86 #include <asm/mpspec.h> #endif diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index f53fbe307c9d..fd51c4ab4829 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -30,6 +30,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/input.h> +#include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index 5faf6c21257d..45cd03b4630e 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -29,6 +29,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/types.h> #include <linux/acpi.h> #include <acpi/acpi_bus.h> diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c index cc421b7ae166..146135e7a6a1 100644 --- a/drivers/acpi/debug.c +++ b/drivers/acpi/debug.c @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/moduleparam.h> #include <linux/debugfs.h> +#include <linux/slab.h> #include <asm/uaccess.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index d9a85f1ddde6..3fe29e992be8 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -24,6 +24,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/types.h> #include <linux/notifier.h> @@ -1025,13 +1026,10 @@ static int dock_remove(struct dock_station *ds) static acpi_status find_dock(acpi_handle handle, u32 lvl, void *context, void **rv) { - acpi_status status = AE_OK; - if (is_dock(handle)) - if (dock_add(handle) >= 0) - status = AE_CTRL_TERMINATE; + dock_add(handle); - return status; + return AE_OK; } static acpi_status diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 1ac28c6a672e..f2234db85da0 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -39,6 +39,7 @@ #include <linux/interrupt.h> #include <linux/list.h> #include <linux/spinlock.h> +#include <linux/slab.h> #include <asm/io.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> @@ -628,12 +629,12 @@ static u32 acpi_ec_gpe_handler(void *data) static acpi_status acpi_ec_space_handler(u32 function, acpi_physical_address address, - u32 bits, u64 *value, + u32 bits, u64 *value64, void *handler_context, void *region_context) { struct acpi_ec *ec = handler_context; - int result = 0, i; - u8 temp = 0; + int result = 0, i, bytes = bits / 8; + u8 *value = (u8 *)value64; if ((address > 0xFF) || !value || !handler_context) return AE_BAD_PARAMETER; @@ -641,32 +642,15 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address, if (function != ACPI_READ && function != ACPI_WRITE) return AE_BAD_PARAMETER; - if (bits != 8 && acpi_strict) - return AE_BAD_PARAMETER; - - if (EC_FLAGS_MSI) + if (EC_FLAGS_MSI || bits > 8) acpi_ec_burst_enable(ec); - if (function == ACPI_READ) { - result = acpi_ec_read(ec, address, &temp); - *value = temp; - } else { - temp = 0xff & (*value); - result = acpi_ec_write(ec, address, temp); - } - - for (i = 8; unlikely(bits - i > 0); i += 8) { - ++address; - if (function == ACPI_READ) { - result = acpi_ec_read(ec, address, &temp); - (*value) |= ((u64)temp) << i; - } else { - temp = 0xff & ((*value) >> i); - result = acpi_ec_write(ec, address, temp); - } - } + for (i = 0; i < bytes; ++i, ++address, ++value) + result = (function == ACPI_READ) ? + acpi_ec_read(ec, address, value) : + acpi_ec_write(ec, address, *value); - if (EC_FLAGS_MSI) + if (EC_FLAGS_MSI || bits > 8) acpi_ec_burst_disable(ec); switch (result) { diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c index c511071bfd79..d439314a75d8 100644 --- a/drivers/acpi/event.c +++ b/drivers/acpi/event.c @@ -10,6 +10,7 @@ #include <linux/proc_fs.h> #include <linux/init.h> #include <linux/poll.h> +#include <linux/gfp.h> #include <acpi/acpi_drivers.h> #include <net/netlink.h> #include <net/genetlink.h> diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 6d5b64b7d526..4af6301601e7 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -9,6 +9,7 @@ #include <linux/init.h> #include <linux/list.h> #include <linux/device.h> +#include <linux/slab.h> #include <linux/rwsem.h> #include <linux/acpi.h> diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index b8725461d887..b0337d314604 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -61,8 +61,10 @@ int node_to_pxm(int node) void __acpi_map_pxm_to_node(int pxm, int node) { - pxm_to_node_map[pxm] = node; - node_to_pxm_map[node] = pxm; + if (pxm_to_node_map[pxm] == NUMA_NO_NODE || node < pxm_to_node_map[pxm]) + pxm_to_node_map[pxm] = node; + if (node_to_pxm_map[node] == PXM_INVAL || pxm < node_to_pxm_map[node]) + node_to_pxm_map[node] = pxm; } int acpi_map_pxm_to_node(int pxm) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 8e6d8665f0ae..7594f65800cf 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -758,7 +758,14 @@ static acpi_status __acpi_os_execute(acpi_execute_type type, queue = hp ? kacpi_hotplug_wq : (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); dpc->wait = hp ? 1 : 0; - INIT_WORK(&dpc->work, acpi_os_execute_deferred); + + if (queue == kacpi_hotplug_wq) + INIT_WORK(&dpc->work, acpi_os_execute_deferred); + else if (queue == kacpi_notify_wq) + INIT_WORK(&dpc->work, acpi_os_execute_deferred); + else + INIT_WORK(&dpc->work, acpi_os_execute_deferred); + ret = queue_work(queue, &dpc->work); if (!ret) { @@ -1151,16 +1158,10 @@ int acpi_check_resource_conflict(const struct resource *res) if (clash) { if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { - printk("%sACPI: %s resource %s [0x%llx-0x%llx]" - " conflicts with ACPI region %s" - " [0x%llx-0x%llx]\n", - acpi_enforce_resources == ENFORCE_RESOURCES_LAX - ? KERN_WARNING : KERN_ERR, - ioport ? "I/O" : "Memory", res->name, - (long long) res->start, (long long) res->end, - res_list_elem->name, - (long long) res_list_elem->start, - (long long) res_list_elem->end); + printk(KERN_WARNING "ACPI: resource %s %pR" + " conflicts with ACPI region %s %pR\n", + res->name, res, res_list_elem->name, + res_list_elem); if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) printk(KERN_NOTICE "ACPI: This conflict may" " cause random problems and system" diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 843699ed93f2..b0a71ecee682 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -37,6 +37,7 @@ #include <linux/pm.h> #include <linux/pci.h> #include <linux/acpi.h> +#include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 04b0f007c9b7..8d47a5846aeb 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -39,6 +39,7 @@ #include <linux/pm.h> #include <linux/pci.h> #include <linux/mutex.h> +#include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index d724736d56c8..aefce33f2a09 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -34,6 +34,7 @@ #include <linux/pci.h> #include <linux/pci-acpi.h> #include <linux/acpi.h> +#include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c index 11f219743204..07f7fea8a4e2 100644 --- a/drivers/acpi/pci_slot.c +++ b/drivers/acpi/pci_slot.c @@ -26,6 +26,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/acpi.h> diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 0f30c3c1eea4..ddc76787b842 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -39,6 +39,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> +#include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <acpi/acpi_bus.h> diff --git a/drivers/acpi/power_meter.c b/drivers/acpi/power_meter.c index 834c5af0de4b..e8c32a49f14e 100644 --- a/drivers/acpi/power_meter.c +++ b/drivers/acpi/power_meter.c @@ -25,6 +25,7 @@ #include <linux/jiffies.h> #include <linux/mutex.h> #include <linux/dmi.h> +#include <linux/slab.h> #include <linux/kdev_t.h> #include <linux/sched.h> #include <linux/time.h> diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 791ac7b0f8df..51284351418f 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -8,6 +8,7 @@ * - Added _PDC for platforms with Intel CPUs */ #include <linux/dmi.h> +#include <linux/slab.h> #include <acpi/acpi_drivers.h> #include <acpi/processor.h> diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index b5658cdce27f..5675d9747e87 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -45,6 +45,7 @@ #include <linux/dmi.h> #include <linux/moduleparam.h> #include <linux/cpuidle.h> +#include <linux/slab.h> #include <asm/io.h> #include <asm/system.h> diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 37dfce749398..5939e7f7d8e9 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -32,6 +32,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/cpufreq.h> +#include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/acpi.h> diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index d648a9860b88..ba1bd263d903 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -30,6 +30,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/cpufreq.h> +#include <linux/slab.h> #ifdef CONFIG_X86 #include <asm/cpufeature.h> diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 29c6f5766dcf..9ade1a5b32ed 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -28,6 +28,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/sched.h> #include <linux/cpufreq.h> diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 89ad11138e48..4ff76e8174eb 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -25,6 +25,7 @@ */ #include <linux/init.h> +#include <linux/slab.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/kernel.h> diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c index fd09229282ea..36704b887ccf 100644 --- a/drivers/acpi/sbshc.c +++ b/drivers/acpi/sbshc.c @@ -11,6 +11,7 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #include <linux/wait.h> +#include <linux/slab.h> #include <linux/delay.h> #include <linux/interrupt.h> #include "sbshc.h" diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index fb7fc24fe727..0338f513a010 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -4,10 +4,12 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/kernel.h> #include <linux/acpi.h> #include <linux/signal.h> #include <linux/kthread.h> +#include <linux/dmi.h> #include <acpi/acpi_drivers.h> @@ -1032,6 +1034,41 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id) list_add_tail(&id->list, &device->pnp.ids); } +/* + * Old IBM workstations have a DSDT bug wherein the SMBus object + * lacks the SMBUS01 HID and the methods do not have the necessary "_" + * prefix. Work around this. + */ +static int acpi_ibm_smbus_match(struct acpi_device *device) +{ + acpi_handle h_dummy; + struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; + int result; + + if (!dmi_name_in_vendors("IBM")) + return -ENODEV; + + /* Look for SMBS object */ + result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path); + if (result) + return result; + + if (strcmp("SMBS", path.pointer)) { + result = -ENODEV; + goto out; + } + + /* Does it have the necessary (but misnamed) methods? */ + result = -ENODEV; + if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) && + ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) && + ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy))) + result = 0; +out: + kfree(path.pointer); + return result; +} + static void acpi_device_set_id(struct acpi_device *device) { acpi_status status; @@ -1044,12 +1081,6 @@ static void acpi_device_set_id(struct acpi_device *device) if (ACPI_IS_ROOT_DEVICE(device)) { acpi_add_id(device, ACPI_SYSTEM_HID); break; - } else if (ACPI_IS_ROOT_DEVICE(device->parent)) { - /* \_SB_, the only root-level namespace device */ - acpi_add_id(device, ACPI_BUS_HID); - strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); - strcpy(device->pnp.device_class, ACPI_BUS_CLASS); - break; } status = acpi_get_object_info(device->handle, &info); @@ -1082,6 +1113,14 @@ static void acpi_device_set_id(struct acpi_device *device) acpi_add_id(device, ACPI_BAY_HID); else if (ACPI_SUCCESS(acpi_dock_match(device))) acpi_add_id(device, ACPI_DOCK_HID); + else if (!acpi_ibm_smbus_match(device)) + acpi_add_id(device, ACPI_SMBUS_IBM_HID); + else if (!acpi_device_hid(device) && + ACPI_IS_ROOT_DEVICE(device->parent)) { + acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */ + strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); + strcpy(device->pnp.device_class, ACPI_BUS_CLASS); + } break; case ACPI_BUS_TYPE_POWER: diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c index 743f2445e2a1..4aaf24976138 100644 --- a/drivers/acpi/system.c +++ b/drivers/acpi/system.c @@ -25,6 +25,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/string.h> #include <asm/uaccess.h> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 5d3893558cf7..efad1f33aeb5 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -35,6 +35,7 @@ #include <linux/module.h> #include <linux/dmi.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/types.h> #include <linux/proc_fs.h> #include <linux/jiffies.h> diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index c9a49f4747e6..b002a471c5d4 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -25,6 +25,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/types.h> #include <acpi/acpi_bus.h> diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index cbe6f3924a10..a0c93b321482 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -39,10 +39,12 @@ #include <linux/sort.h> #include <linux/pci.h> #include <linux/pci_ids.h> +#include <linux/slab.h> #include <asm/uaccess.h> #include <linux/dmi.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> +#include <linux/suspend.h> #define PREFIX "ACPI: " @@ -88,7 +90,6 @@ module_param(allow_duplicates, bool, 0644); static int register_count = 0; static int acpi_video_bus_add(struct acpi_device *device); static int acpi_video_bus_remove(struct acpi_device *device, int type); -static int acpi_video_resume(struct acpi_device *device); static void acpi_video_bus_notify(struct acpi_device *device, u32 event); static const struct acpi_device_id video_device_ids[] = { @@ -104,7 +105,6 @@ static struct acpi_driver acpi_video_bus = { .ops = { .add = acpi_video_bus_add, .remove = acpi_video_bus_remove, - .resume = acpi_video_resume, .notify = acpi_video_bus_notify, }, }; @@ -159,6 +159,7 @@ struct acpi_video_bus { struct proc_dir_entry *dir; struct input_dev *input; char phys[32]; /* for input device */ + struct notifier_block pm_nb; }; struct acpi_video_device_flags { @@ -1020,6 +1021,13 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) if (IS_ERR(device->backlight)) return; + /* + * Save current brightness level in case we have to restore it + * before acpi_video_device_lcd_set_level() is called next time. + */ + device->backlight->props.brightness = + acpi_video_get_brightness(device->backlight); + result = sysfs_create_link(&device->backlight->dev.kobj, &device->dev->dev.kobj, "device"); if (result) @@ -2122,7 +2130,7 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event) { struct acpi_video_bus *video = acpi_driver_data(device); struct input_dev *input; - int keycode; + int keycode = 0; if (!video) return; @@ -2158,17 +2166,19 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event) break; default: - keycode = KEY_UNKNOWN; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } acpi_notifier_call_chain(device, event, 0); - input_report_key(input, keycode, 1); - input_sync(input); - input_report_key(input, keycode, 0); - input_sync(input); + + if (keycode) { + input_report_key(input, keycode, 1); + input_sync(input); + input_report_key(input, keycode, 0); + input_sync(input); + } return; } @@ -2179,7 +2189,7 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) struct acpi_device *device = NULL; struct acpi_video_bus *bus; struct input_dev *input; - int keycode; + int keycode = 0; if (!video_device) return; @@ -2220,39 +2230,48 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) keycode = KEY_DISPLAY_OFF; break; default: - keycode = KEY_UNKNOWN; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } acpi_notifier_call_chain(device, event, 0); - input_report_key(input, keycode, 1); - input_sync(input); - input_report_key(input, keycode, 0); - input_sync(input); + + if (keycode) { + input_report_key(input, keycode, 1); + input_sync(input); + input_report_key(input, keycode, 0); + input_sync(input); + } return; } -static int instance; -static int acpi_video_resume(struct acpi_device *device) +static int acpi_video_resume(struct notifier_block *nb, + unsigned long val, void *ign) { struct acpi_video_bus *video; struct acpi_video_device *video_device; int i; - if (!device || !acpi_driver_data(device)) - return -EINVAL; + switch (val) { + case PM_HIBERNATION_PREPARE: + case PM_SUSPEND_PREPARE: + case PM_RESTORE_PREPARE: + return NOTIFY_DONE; + } - video = acpi_driver_data(device); + video = container_of(nb, struct acpi_video_bus, pm_nb); + + dev_info(&video->device->dev, "Restoring backlight state\n"); for (i = 0; i < video->attached_count; i++) { video_device = video->attached_array[i].bind_info; if (video_device && video_device->backlight) acpi_video_set_brightness(video_device->backlight); } - return AE_OK; + + return NOTIFY_OK; } static acpi_status @@ -2276,6 +2295,8 @@ acpi_video_bus_match(acpi_handle handle, u32 level, void *context, return AE_OK; } +static int instance; + static int acpi_video_bus_add(struct acpi_device *device) { struct acpi_video_bus *video; @@ -2357,7 +2378,6 @@ static int acpi_video_bus_add(struct acpi_device *device) set_bit(KEY_BRIGHTNESSDOWN, input->keybit); set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); set_bit(KEY_DISPLAY_OFF, input->keybit); - set_bit(KEY_UNKNOWN, input->keybit); error = input_register_device(input); if (error) @@ -2369,6 +2389,10 @@ static int acpi_video_bus_add(struct acpi_device *device) video->flags.rom ? "yes" : "no", video->flags.post ? "yes" : "no"); + video->pm_nb.notifier_call = acpi_video_resume; + video->pm_nb.priority = 0; + register_pm_notifier(&video->pm_nb); + return 0; err_free_input_dev: @@ -2395,6 +2419,8 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type) video = acpi_driver_data(device); + unregister_pm_notifier(&video->pm_nb); + acpi_video_bus_stop_devices(video); acpi_video_bus_put_devices(video); acpi_video_bus_remove_fs(device); |
