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Date: Mon, 17 Mar 2014 15:49:35 +0800 From: Zhang Rui <rui.zhang@...el.com> To: linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org Cc: bhelgaas@...gle.com, matthew.garrett@...ula.com, rafael.j.wysocki@...el.com, dmitry.torokhov@...il.com, Zhang Rui <rui.zhang@...el.com> Subject: [PATCH V4 06/11] ACPI: introduce platform_id flag Only certain kind of ACPI device objects can be enumerated to platform bus. These ACPI device objects include 1. ACPI device objects that have _HID control method. 2. some ACPI device objects that have Linux specified HID strings. In order to distinguish those device objects from the others, a new flag platform_id and a new function acpi_add_platform_id() are introduced in this patch. Currently, only devices with _HID method have this flag set. If you want platform devices to be created for device objects without _HID, use acpi_add_platform_id() when adding artificial Linux-specific ID strings to them. Signed-off-by: Zhang Rui <rui.zhang@...el.com> --- drivers/acpi/scan.c | 9 ++++++++- include/acpi/acpi_bus.h | 3 ++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 399257e..e41b5e6 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1679,6 +1679,13 @@ static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id) pnp->type.hardware_id = 1; } +static void acpi_add_platform_id(struct acpi_device_pnp *pnp, + const char *dev_id) +{ + acpi_add_id(pnp, dev_id); + pnp->type.platform_id = 1; +} + /* * Old IBM workstations have a DSDT bug wherein the SMBus object * lacks the SMBUS01 HID and the methods do not have the necessary "_" @@ -1729,7 +1736,7 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, } if (info->valid & ACPI_VALID_HID) - acpi_add_id(pnp, info->hardware_id.string); + acpi_add_platform_id(pnp, info->hardware_id.string); if (info->valid & ACPI_VALID_CID) { cid_list = &info->compatible_id_list; for (i = 0; i < cid_list->count; i++) diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8c5e235..f998746 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -217,7 +217,8 @@ struct acpi_hardware_id { struct acpi_pnp_type { u32 hardware_id:1; u32 bus_address:1; - u32 reserved:30; + u32 platform_id:1; + u32 reserved:29; }; struct acpi_device_pnp { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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