diff options
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r-- | drivers/acpi/scan.c | 118 |
1 files changed, 62 insertions, 56 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 3a10d7573477..33897298f03e 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -404,10 +404,6 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src) error = dock_notify(adev, src); } else if (adev->flags.hotplug_notify) { error = acpi_generic_hotplug_event(adev, src); - if (error == -EPERM) { - ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; - goto err_out; - } } else { int (*notify)(struct acpi_device *, u32); @@ -423,8 +419,20 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src) else goto out; } - if (!error) + switch (error) { + case 0: ost_code = ACPI_OST_SC_SUCCESS; + break; + case -EPERM: + ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; + break; + case -EBUSY: + ost_code = ACPI_OST_SC_DEVICE_BUSY; + break; + default: + ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; + break; + } err_out: acpi_evaluate_ost(adev->handle, src, ost_code, NULL); @@ -835,7 +843,7 @@ static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle, return err; } -static void acpi_wakeup_gpe_init(struct acpi_device *device) +static bool acpi_wakeup_gpe_init(struct acpi_device *device) { static const struct acpi_device_id button_device_ids[] = { {"PNP0C0C", 0}, @@ -845,13 +853,11 @@ static void acpi_wakeup_gpe_init(struct acpi_device *device) }; struct acpi_device_wakeup *wakeup = &device->wakeup; acpi_status status; - acpi_event_status event_status; wakeup->flags.notifier_present = 0; /* Power button, Lid switch always enable wakeup */ if (!acpi_match_device_ids(device, button_device_ids)) { - wakeup->flags.run_wake = 1; if (!acpi_match_device_ids(device, &button_device_ids[1])) { /* Do not use Lid/sleep button for S5 wakeup */ if (wakeup->sleep_state == ACPI_STATE_S5) @@ -859,17 +865,12 @@ static void acpi_wakeup_gpe_init(struct acpi_device *device) } acpi_mark_gpe_for_wake(wakeup->gpe_device, wakeup->gpe_number); device_set_wakeup_capable(&device->dev, true); - return; + return true; } - acpi_setup_gpe_for_wake(device->handle, wakeup->gpe_device, - wakeup->gpe_number); - status = acpi_get_gpe_status(wakeup->gpe_device, wakeup->gpe_number, - &event_status); - if (ACPI_FAILURE(status)) - return; - - wakeup->flags.run_wake = !!(event_status & ACPI_EVENT_FLAG_HAS_HANDLER); + status = acpi_setup_gpe_for_wake(device->handle, wakeup->gpe_device, + wakeup->gpe_number); + return ACPI_SUCCESS(status); } static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device) @@ -887,10 +888,10 @@ static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device) return; } - device->wakeup.flags.valid = 1; + device->wakeup.flags.valid = acpi_wakeup_gpe_init(device); device->wakeup.prepare_count = 0; - acpi_wakeup_gpe_init(device); - /* Call _PSW/_DSW object to disable its ability to wake the sleeping + /* + * Call _PSW/_DSW object to disable its ability to wake the sleeping * system for the ACPI device with the _PRW object. * The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW. * So it is necessary to call _DSW object first. Only when it is not @@ -1428,6 +1429,37 @@ static void acpi_init_coherency(struct acpi_device *adev) adev->flags.coherent_dma = cca; } +static int acpi_check_spi_i2c_slave(struct acpi_resource *ares, void *data) +{ + bool *is_spi_i2c_slave_p = data; + + if (ares->type != ACPI_RESOURCE_TYPE_SERIAL_BUS) + return 1; + + /* + * devices that are connected to UART still need to be enumerated to + * platform bus + */ + if (ares->data.common_serial_bus.type != ACPI_RESOURCE_SERIAL_TYPE_UART) + *is_spi_i2c_slave_p = true; + + /* no need to do more checking */ + return -1; +} + +static bool acpi_is_spi_i2c_slave(struct acpi_device *device) +{ + struct list_head resource_list; + bool is_spi_i2c_slave = false; + + INIT_LIST_HEAD(&resource_list); + acpi_dev_get_resources(device, &resource_list, acpi_check_spi_i2c_slave, + &is_spi_i2c_slave); + acpi_dev_free_resource_list(&resource_list); + + return is_spi_i2c_slave; +} + void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, int type, unsigned long long sta) { @@ -1436,6 +1468,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, device->handle = handle; device->parent = acpi_bus_get_parent(handle); device->fwnode.type = FWNODE_ACPI; + device->fwnode.ops = &acpi_fwnode_ops; acpi_set_device_status(device, sta); acpi_device_get_busid(device); acpi_set_pnp_ids(handle, &device->pnp, type); @@ -1443,6 +1476,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, acpi_bus_get_flags(device); device->flags.match_driver = false; device->flags.initialized = true; + device->flags.spi_i2c_slave = acpi_is_spi_i2c_slave(device); acpi_device_clear_enumerated(device); device_initialize(&device->dev); dev_set_uevent_suppress(&device->dev, true); @@ -1567,13 +1601,9 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type, return 0; } -bool acpi_device_is_present(struct acpi_device *adev) +bool acpi_device_is_present(const struct acpi_device *adev) { - if (adev->status.present || adev->status.functional) - return true; - - adev->flags.initialized = false; - return false; + return adev->status.present || adev->status.functional; } static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler, @@ -1727,38 +1757,13 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used, return AE_OK; } -static int acpi_check_spi_i2c_slave(struct acpi_resource *ares, void *data) -{ - bool *is_spi_i2c_slave_p = data; - - if (ares->type != ACPI_RESOURCE_TYPE_SERIAL_BUS) - return 1; - - /* - * devices that are connected to UART still need to be enumerated to - * platform bus - */ - if (ares->data.common_serial_bus.type != ACPI_RESOURCE_SERIAL_TYPE_UART) - *is_spi_i2c_slave_p = true; - - /* no need to do more checking */ - return -1; -} - static void acpi_default_enumeration(struct acpi_device *device) { - struct list_head resource_list; - bool is_spi_i2c_slave = false; - /* * Do not enumerate SPI/I2C slaves as they will be enumerated by their * respective parents. */ - INIT_LIST_HEAD(&resource_list); - acpi_dev_get_resources(device, &resource_list, acpi_check_spi_i2c_slave, - &is_spi_i2c_slave); - acpi_dev_free_resource_list(&resource_list); - if (!is_spi_i2c_slave) { + if (!device->flags.spi_i2c_slave) { acpi_create_platform_device(device, NULL); acpi_device_set_enumerated(device); } else { @@ -1831,6 +1836,7 @@ static void acpi_bus_attach(struct acpi_device *device) acpi_bus_get_status(device); /* Skip devices that are not present. */ if (!acpi_device_is_present(device)) { + device->flags.initialized = false; acpi_device_clear_enumerated(device); device->flags.power_manageable = 0; return; @@ -1854,7 +1860,7 @@ static void acpi_bus_attach(struct acpi_device *device) return; device->flags.match_driver = true; - if (ret > 0) { + if (ret > 0 && !device->flags.spi_i2c_slave) { acpi_device_set_enumerated(device); goto ok; } @@ -1863,10 +1869,10 @@ static void acpi_bus_attach(struct acpi_device *device) if (ret < 0) return; - if (device->pnp.type.platform_id) - acpi_default_enumeration(device); - else + if (!device->pnp.type.platform_id && !device->flags.spi_i2c_slave) acpi_device_set_enumerated(device); + else + acpi_default_enumeration(device); ok: list_for_each_entry(child, &device->children, node) |