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Merge branch 'acpi-tables'

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* acpi-tables:
  ACPI: Rename configfs.c to acpi_configfs.c to prevent link error
  ACPI: add support for loading SSDTs via configfs
  ACPI: add support for configfs
  efi / ACPI: load SSTDs from EFI variables
  spi / ACPI: add support for ACPI reconfigure notifications
  i2c / ACPI: add support for ACPI reconfigure notifications
  ACPI: add support for ACPI reconfiguration notifiers
  ACPI / scan: fix enumeration (visited) flags for bus rescans
  ACPI / documentation: add SSDT overlays documentation
  ACPI: ARM64: support for ACPI_TABLE_UPGRADE
  ACPI / tables: introduce ARCH_HAS_ACPI_TABLE_UPGRADE
  ACPI / tables: move arch-specific symbol to asm/acpi.h
  ACPI / tables: table upgrade: refactor function definitions
  ACPI / tables: table upgrade: use cacheable map for tables

Conflicts:
	arch/arm64/include/asm/acpi.h
This commit is contained in:
Rafael J. Wysocki 2016-07-25 13:41:01 +02:00
commit d5f017b796
22 changed files with 972 additions and 83 deletions
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100
drivers/spi/spi.c
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@ -622,6 +622,8 @@ void spi_unregister_device(struct spi_device *spi)
if (spi->dev.of_node)
of_node_clear_flag(spi->dev.of_node, OF_POPULATED);
if (ACPI_COMPANION(&spi->dev))
acpi_device_clear_enumerated(ACPI_COMPANION(&spi->dev));
device_unregister(&spi->dev);
}
EXPORT_SYMBOL_GPL(spi_unregister_device);
@ -1646,18 +1648,15 @@ static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
return 1;
}
static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level,
void *data, void **return_value)
static acpi_status acpi_register_spi_device(struct spi_master *master,
struct acpi_device *adev)
{
struct spi_master *master = data;
struct list_head resource_list;
struct acpi_device *adev;
struct spi_device *spi;
int ret;
if (acpi_bus_get_device(handle, &adev))
return AE_OK;
if (acpi_bus_get_status(adev) || !adev->status.present)
if (acpi_bus_get_status(adev) || !adev->status.present ||
acpi_device_enumerated(adev))
return AE_OK;
spi = spi_alloc_device(master);
@ -1683,6 +1682,8 @@ static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level,
if (spi->irq < 0)
spi->irq = acpi_dev_gpio_irq_get(adev, 0);
acpi_device_set_enumerated(adev);
adev->power.flags.ignore_parent = true;
strlcpy(spi->modalias, acpi_device_hid(adev), sizeof(spi->modalias));
if (spi_add_device(spi)) {
@ -1695,6 +1696,18 @@ static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level,
return AE_OK;
}
static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level,
void *data, void **return_value)
{
struct spi_master *master = data;
struct acpi_device *adev;
if (acpi_bus_get_device(handle, &adev))
return AE_OK;
return acpi_register_spi_device(master, adev);
}
static void acpi_register_spi_devices(struct spi_master *master)
{
acpi_status status;
@ -3107,6 +3120,77 @@ static struct notifier_block spi_of_notifier = {
extern struct notifier_block spi_of_notifier;
#endif /* IS_ENABLED(CONFIG_OF_DYNAMIC) */
#if IS_ENABLED(CONFIG_ACPI)
static int spi_acpi_master_match(struct device *dev, const void *data)
{
return ACPI_COMPANION(dev->parent) == data;
}
static int spi_acpi_device_match(struct device *dev, void *data)
{
return ACPI_COMPANION(dev) == data;
}
static struct spi_master *acpi_spi_find_master_by_adev(struct acpi_device *adev)
{
struct device *dev;
dev = class_find_device(&spi_master_class, NULL, adev,
spi_acpi_master_match);
if (!dev)
return NULL;
return container_of(dev, struct spi_master, dev);
}
static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev)
{
struct device *dev;
dev = bus_find_device(&spi_bus_type, NULL, adev, spi_acpi_device_match);
return dev ? to_spi_device(dev) : NULL;
}
static int acpi_spi_notify(struct notifier_block *nb, unsigned long value,
void *arg)
{
struct acpi_device *adev = arg;
struct spi_master *master;
struct spi_device *spi;
switch (value) {
case ACPI_RECONFIG_DEVICE_ADD:
master = acpi_spi_find_master_by_adev(adev->parent);
if (!master)
break;
acpi_register_spi_device(master, adev);
put_device(&master->dev);
break;
case ACPI_RECONFIG_DEVICE_REMOVE:
if (!acpi_device_enumerated(adev))
break;
spi = acpi_spi_find_device_by_adev(adev);
if (!spi)
break;
spi_unregister_device(spi);
put_device(&spi->dev);
break;
}
return NOTIFY_OK;
}
static struct notifier_block spi_acpi_notifier = {
.notifier_call = acpi_spi_notify,
};
#else
extern struct notifier_block spi_acpi_notifier;
#endif
static int __init spi_init(void)
{
int status;
@ -3127,6 +3211,8 @@ static int __init spi_init(void)
if (IS_ENABLED(CONFIG_OF_DYNAMIC))
WARN_ON(of_reconfig_notifier_register(&spi_of_notifier));
if (IS_ENABLED(CONFIG_ACPI))
WARN_ON(acpi_reconfig_notifier_register(&spi_acpi_notifier));
return 0;