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Date: Thu, 27 Jun 2013 00:30:59 +0800
From: Jiang Liu <liuj97@...il.com>
To: "Rafael J . Wysocki" <rjw@...k.pl>
Cc: liuj97@...il.com, Jiang Liu <jiang.liu@...wei.com>,
Yijing Wang <wangyijing@...wei.com>,
linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
Len Brown <lenb@...nel.org>
Subject: [PATCH v2 7/9] ACPI: simplify dock driver with new interfaces
From: Jiang Liu <jiang.liu@...wei.com>
Use new helper functions to simpilify ACPI dock driver.
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Jiang Liu <liuj97@...il.com>
Cc: Len Brown <lenb@...nel.org>
Cc: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: linux-acpi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
drivers/acpi/dock.c | 122 ++++++----------------------------------------------
1 file changed, 12 insertions(+), 110 deletions(-)
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 22183c4..31ab001 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -226,48 +226,6 @@ find_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
/*****************************************************************************
* Dock functions *
*****************************************************************************/
-/**
- * is_dock - see if a device is a dock station
- * @handle: acpi handle of the device
- *
- * If an acpi object has a _DCK method, then it is by definition a dock
- * station, so return true.
- */
-static int is_dock(acpi_handle handle)
-{
- acpi_status status;
- acpi_handle tmp;
-
- status = acpi_get_handle(handle, "_DCK", &tmp);
- if (ACPI_FAILURE(status))
- return 0;
- return 1;
-}
-
-static int __init is_ejectable(acpi_handle handle)
-{
- acpi_status status;
- acpi_handle tmp;
-
- status = acpi_get_handle(handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status))
- return 0;
- return 1;
-}
-
-static int __init is_ata(acpi_handle handle)
-{
- acpi_handle tmp;
-
- if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
- return 1;
-
- return 0;
-}
-
static int __init is_battery(acpi_handle handle)
{
struct acpi_device_info *info;
@@ -284,17 +242,13 @@ static int __init is_battery(acpi_handle handle)
return ret;
}
-static int __init is_ejectable_bay(acpi_handle handle)
+/* Check whether ACPI object is an ejectable battery or disk bay */
+static bool __init is_ejectable_bay(acpi_handle handle)
{
- acpi_handle phandle;
+ if (acpi_has_method(handle, "_EJ0") && is_battery(handle))
+ return true;
- if (!is_ejectable(handle))
- return 0;
- if (is_battery(handle) || is_ata(handle))
- return 1;
- if (!acpi_get_parent(handle, &phandle) && is_ata(phandle))
- return 1;
- return 0;
+ return acpi_bay_match(handle);
}
/**
@@ -312,7 +266,7 @@ int is_dock_device(acpi_handle handle)
if (!dock_station_count)
return 0;
- if (is_dock(handle))
+ if (acpi_dock_match(handle))
return 1;
list_for_each_entry(dock_station, &dock_stations, sibling)
@@ -447,37 +401,6 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
}
/**
- * eject_dock - respond to a dock eject request
- * @ds: the dock station
- *
- * This is called after _DCK is called, to execute the dock station's
- * _EJ0 method.
- */
-static void eject_dock(struct dock_station *ds)
-{
- struct acpi_object_list arg_list;
- union acpi_object arg;
- acpi_status status;
- acpi_handle tmp;
-
- /* all dock devices should have _EJ0, but check anyway */
- status = acpi_get_handle(ds->handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status)) {
- pr_debug("No _EJ0 support for dock device\n");
- return;
- }
-
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
-
- status = acpi_evaluate_object(ds->handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status))
- pr_debug("Failed to evaluate _EJ0!\n");
-}
-
-/**
* handle_dock - handle a dock event
* @ds: the dock station
* @dock: to dock, or undock - that is the question
@@ -537,27 +460,6 @@ static inline void complete_undock(struct dock_station *ds)
ds->flags &= ~(DOCK_UNDOCKING);
}
-static void dock_lock(struct dock_station *ds, int lock)
-{
- struct acpi_object_list arg_list;
- union acpi_object arg;
- acpi_status status;
-
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = !!lock;
- status = acpi_evaluate_object(ds->handle, "_LCK", &arg_list, NULL);
- if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
- if (lock)
- acpi_handle_warn(ds->handle,
- "Locking device failed (0x%x)\n", status);
- else
- acpi_handle_warn(ds->handle,
- "Unlocking device failed (0x%x)\n", status);
- }
-}
-
/**
* dock_in_progress - see if we are in the middle of handling a dock event
* @ds: the dock station
@@ -692,8 +594,8 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
hotplug_dock_devices(ds, ACPI_NOTIFY_EJECT_REQUEST);
undock(ds);
- dock_lock(ds, 0);
- eject_dock(ds);
+ acpi_evaluate_lck(ds->handle, 0);
+ acpi_evaluate_ej0(ds->handle);
if (dock_present(ds)) {
acpi_handle_err(ds->handle, "Unable to undock!\n");
return -EBUSY;
@@ -752,7 +654,7 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
hotplug_dock_devices(ds, event);
complete_dock(ds);
dock_event(ds, event, DOCK_EVENT);
- dock_lock(ds, 1);
+ acpi_evaluate_lck(ds->handle, 1);
acpi_update_all_gpes();
break;
}
@@ -998,9 +900,9 @@ static int __init dock_add(acpi_handle handle)
/* we want the dock device to send uevents */
dev_set_uevent_suppress(&dd->dev, 0);
- if (is_dock(handle))
+ if (acpi_dock_match(handle))
dock_station->flags |= DOCK_IS_DOCK;
- if (is_ata(handle))
+ if (acpi_ata_match(handle))
dock_station->flags |= DOCK_IS_ATA;
if (is_battery(handle))
dock_station->flags |= DOCK_IS_BAT;
@@ -1043,7 +945,7 @@ err_unregister:
static __init acpi_status
find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
{
- if (is_dock(handle) || is_ejectable_bay(handle))
+ if (acpi_dock_match(handle) || is_ejectable_bay(handle))
dock_add(handle);
return AE_OK;
--
1.8.1.2
--
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