ACPI, PNP: hook ACPI D-state to PNP suspend/resume

applied after Rafel's 'PM: Update global suspend and hibernation operations framework' patch set

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

3 files changed, 23 insertions, 0 deletions

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index e161423b4300..1432806451cd 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -167,6 +167,8 @@ static int pnp_bus_suspend(struct device *dev, pm_message_t state)
                         return error;
         }
 
+        if (pnp_dev->protocol && pnp_dev->protocol->suspend)
+                pnp_dev->protocol->suspend(pnp_dev, state);
         return 0;
 }
 
@@ -179,6 +181,9 @@ static int pnp_bus_resume(struct device *dev)
         if (!pnp_drv)
                 return 0;
 
+        if (pnp_dev->protocol && pnp_dev->protocol->resume)
+                pnp_dev->protocol->resume(pnp_dev);
+
         if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) {
                 error = pnp_start_dev(pnp_dev);
                 if (error)
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index a00548799e98..c37a558ecd96 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -119,11 +119,25 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev)
         return ACPI_FAILURE(status) ? -ENODEV : 0;
 }
 
+static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)
+{
+        return acpi_bus_set_power((acpi_handle)dev->data,
+                acpi_pm_device_sleep_state(&dev->dev,
+                device_may_wakeup(&dev->dev), NULL));
+}
+
+static int pnpacpi_resume(struct pnp_dev *dev)
+{
+        return acpi_bus_set_power((acpi_handle)dev->data, ACPI_STATE_D0);
+}
+
 static struct pnp_protocol pnpacpi_protocol = {
         .name   = "Plug and Play ACPI",
         .get    = pnpacpi_get_resources,
         .set    = pnpacpi_set_resources,
         .disable = pnpacpi_disable_resources,
+        .suspend = pnpacpi_suspend,
+        .resume = pnpacpi_resume,
 };
 
 static int __init pnpacpi_add_device(struct acpi_device *device)
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 2a1897e6f937..66edb2293184 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -335,6 +335,10 @@ struct pnp_protocol {
         int (*set)(struct pnp_dev *dev, struct pnp_resource_table *res);
         int (*disable)(struct pnp_dev *dev);
 
+        /* protocol specific suspend/resume */
+        int (*suspend)(struct pnp_dev *dev, pm_message_t state);
+        int (*resume)(struct pnp_dev *dev);
+
         /* used by pnp layer only (look but don't touch) */
         unsigned char           number;         /* protocol number*/
         struct device           dev;            /* link to driver model */