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Commit faacd5ad authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branch 'acpi-scan' into acpi-cca

parents 0f57d867 0519ade7

drivers/acpi/internal.h

+2 −0
Original line number Diff line number Diff line
@@ -191,6 +191,8 @@ bool acpi_osi_is_win8(void); 
/*--------------------------------------------------------------------------

				Device properties

  -------------------------------------------------------------------------- */

#define ACPI_DT_NAMESPACE_HID	"PRP0001"



void acpi_init_properties(struct acpi_device *adev);

void acpi_free_properties(struct acpi_device *adev);

drivers/acpi/property.c

+31 −23
Original line number Diff line number Diff line
@@ -79,50 +79,51 @@ static bool acpi_properties_format_valid(const union acpi_object *properties) 
static void acpi_init_of_compatible(struct acpi_device *adev)

{

	const union acpi_object *of_compatible;

	struct acpi_hardware_id *hwid;

	bool acpi_of = false;

	int ret;



	/*

	 * Check if the special PRP0001 ACPI ID is present and in that

	 * case we fill in Device Tree compatible properties for this

	 * device.

	 */

	list_for_each_entry(hwid, &adev->pnp.ids, list) {

		if (!strcmp(hwid->id, "PRP0001")) {

			acpi_of = true;

			break;

		}

	}



	if (!acpi_of)

		return;



	ret = acpi_dev_get_property_array(adev, "compatible", ACPI_TYPE_STRING,

					  &of_compatible);

	if (ret) {

		ret = acpi_dev_get_property(adev, "compatible",

					    ACPI_TYPE_STRING, &of_compatible);

		if (ret) {

			acpi_handle_warn(adev->handle,

					 "PRP0001 requires compatible property\n");

			if (adev->parent

			    && adev->parent->flags.of_compatible_ok)

				goto out;



			return;

		}

	}

	adev->data.of_compatible = of_compatible;



 out:

	adev->flags.of_compatible_ok = 1;

}



void acpi_init_properties(struct acpi_device *adev)

{

	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };

	bool acpi_of = false;

	struct acpi_hardware_id *hwid;

	const union acpi_object *desc;

	acpi_status status;

	int i;



	/*

	 * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in

	 * Device Tree compatible properties for this device.

	 */

	list_for_each_entry(hwid, &adev->pnp.ids, list) {

		if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {

			acpi_of = true;

			break;

		}

	}



	status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,

					    ACPI_TYPE_PACKAGE);

	if (ACPI_FAILURE(status))

		return;

		goto out;



	desc = buf.pointer;

	if (desc->package.count % 2)
@@ -156,13 +157,20 @@ void acpi_init_properties(struct acpi_device *adev) 
		adev->data.pointer = buf.pointer;

		adev->data.properties = properties;



		if (acpi_of)

			acpi_init_of_compatible(adev);

		return;



		goto out;

	}



 fail:

	dev_warn(&adev->dev, "Returned _DSD data is not valid, skipping\n");

	dev_dbg(&adev->dev, "Returned _DSD data is not valid, skipping\n");

	ACPI_FREE(buf.pointer);



 out:

	if (acpi_of && !adev->flags.of_compatible_ok)

		acpi_handle_info(adev->handle,

			 ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n");

}



void acpi_free_properties(struct acpi_device *adev)

drivers/acpi/scan.c

+16 −14
Original line number Diff line number Diff line
@@ -135,12 +135,13 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias, 
	struct acpi_hardware_id *id;



	/*

	 * Since we skip PRP0001 from the modalias below, 0 should be returned

	 * if PRP0001 is the only ACPI/PNP ID in the device's list.

	 * Since we skip ACPI_DT_NAMESPACE_HID from the modalias below, 0 should

	 * be returned if ACPI_DT_NAMESPACE_HID is the only ACPI/PNP ID in the

	 * device's list.

	 */

	count = 0;

	list_for_each_entry(id, &acpi_dev->pnp.ids, list)

		if (strcmp(id->id, "PRP0001"))

		if (strcmp(id->id, ACPI_DT_NAMESPACE_HID))

			count++;



	if (!count)
@@ -153,7 +154,7 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias, 
	size -= len;



	list_for_each_entry(id, &acpi_dev->pnp.ids, list) {

		if (!strcmp(id->id, "PRP0001"))

		if (!strcmp(id->id, ACPI_DT_NAMESPACE_HID))

			continue;



		count = snprintf(&modalias[len], size, "%s:", id->id);
@@ -177,7 +178,8 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias, 
 * @size: Size of the buffer.

 *

 * Expose DT compatible modalias as of:NnameTCcompatible.  This function should

 * only be called for devices having PRP0001 in their list of ACPI/PNP IDs.

 * only be called for devices having ACPI_DT_NAMESPACE_HID in their list of

 * ACPI/PNP IDs.

 */

static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias,

			      int size)
@@ -980,9 +982,9 @@ static void acpi_device_remove_files(struct acpi_device *dev) 
 * @adev: ACPI device object to match.

 * @of_match_table: List of device IDs to match against.

 *

 * If @dev has an ACPI companion which has the special PRP0001 device ID in its

 * list of identifiers and a _DSD object with the "compatible" property, use

 * that property to match against the given list of identifiers.

 * If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of

 * identifiers and a _DSD object with the "compatible" property, use that

 * property to match against the given list of identifiers.

 */

static bool acpi_of_match_device(struct acpi_device *adev,

				 const struct of_device_id *of_match_table)
@@ -1038,14 +1040,14 @@ static const struct acpi_device_id *__acpi_match_device( 
				return id;



		/*

		 * Next, check the special "PRP0001" ID and try to match the

		 * Next, check ACPI_DT_NAMESPACE_HID and try to match the

		 * "compatible" property if found.

		 *

		 * The id returned by the below is not valid, but the only

		 * caller passing non-NULL of_ids here is only interested in

		 * whether or not the return value is NULL.

		 */

		if (!strcmp("PRP0001", hwid->id)

		if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)

		    && acpi_of_match_device(device, of_ids))

			return id;

	}
@@ -1671,7 +1673,7 @@ static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle, 


static void acpi_wakeup_gpe_init(struct acpi_device *device)

{

	struct acpi_device_id button_device_ids[] = {

	static const struct acpi_device_id button_device_ids[] = {

		{"PNP0C0C", 0},

		{"PNP0C0D", 0},

		{"PNP0C0E", 0},
@@ -2405,7 +2407,7 @@ static void acpi_default_enumeration(struct acpi_device *device) 
}



static const struct acpi_device_id generic_device_ids[] = {

	{"PRP0001", },

	{ACPI_DT_NAMESPACE_HID, },

	{"", },

};
@@ -2413,8 +2415,8 @@ static int acpi_generic_device_attach(struct acpi_device *adev, 
				      const struct acpi_device_id *not_used)

{

	/*

	 * Since PRP0001 is the only ID handled here, the test below can be

	 * unconditional.

	 * Since ACPI_DT_NAMESPACE_HID is the only ID handled here, the test

	 * below can be unconditional.

	 */

	if (adev->data.of_compatible)

		acpi_default_enumeration(adev);

include/acpi/acpi_bus.h

+2 −1
Original line number Diff line number Diff line
@@ -208,7 +208,8 @@ struct acpi_device_flags { 
	u32 visited:1;

	u32 hotplug_notify:1;

	u32 is_dock_station:1;

	u32 reserved:23;

	u32 of_compatible_ok:1;

	u32 reserved:22;

};



/* File System */