lkml.org 
[lkml]   [2017]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 1/3] platform: x86: intel-vbtn: Wake up the system from suspend-to-idle
    Date
    From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

    Allow the intel-vbtn driver to wake up the system from suspend-to-idle
    by configuring its platform device as a wakeup one by default and
    switching it over to a system wakeup events triggering mode during
    system suspend transitions.

    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    ---
    drivers/platform/x86/intel-vbtn.c | 39 +++++++++++++++++++++++++++++++++++---
    1 file changed, 36 insertions(+), 3 deletions(-)

    Index: linux-pm/drivers/platform/x86/intel-vbtn.c
    ===================================================================
    --- linux-pm.orig/drivers/platform/x86/intel-vbtn.c
    +++ linux-pm/drivers/platform/x86/intel-vbtn.c
    @@ -23,6 +23,7 @@
    #include <linux/platform_device.h>
    #include <linux/input/sparse-keymap.h>
    #include <linux/acpi.h>
    +#include <linux/suspend.h>
    #include <acpi/acpi_bus.h>

    MODULE_LICENSE("GPL");
    @@ -46,6 +47,7 @@ static const struct key_entry intel_vbtn

    struct intel_vbtn_priv {
    struct input_dev *input_dev;
    + bool wakeup_mode;
    };

    static int intel_vbtn_input_setup(struct platform_device *device)
    @@ -73,9 +75,15 @@ static void notify_handler(acpi_handle h
    struct platform_device *device = context;
    struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);

    - if (!sparse_keymap_report_event(priv->input_dev, event, 1, true))
    - dev_info(&device->dev, "unknown event index 0x%x\n",
    - event);
    + if (priv->wakeup_mode) {
    + if (sparse_keymap_entry_from_scancode(priv->input_dev, event)) {
    + pm_wakeup_hard_event(&device->dev);
    + return;
    + }
    + } else if (sparse_keymap_report_event(priv->input_dev, event, 1, true)) {
    + return;
    + }
    + dev_info(&device->dev, "unknown event index 0x%x\n", event);
    }

    static int intel_vbtn_probe(struct platform_device *device)
    @@ -109,6 +117,7 @@ static int intel_vbtn_probe(struct platf
    if (ACPI_FAILURE(status))
    return -EBUSY;

    + device_init_wakeup(&device->dev, true);
    return 0;
    }

    @@ -125,10 +134,34 @@ static int intel_vbtn_remove(struct plat
    return 0;
    }

    +static int intel_vbtn_pm_prepare(struct device *dev)
    +{
    + struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
    +
    + priv->wakeup_mode = true;
    + return 0;
    +}
    +
    +static int intel_vbtn_pm_resume(struct device *dev)
    +{
    + struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
    +
    + priv->wakeup_mode = false;
    + return 0;
    +}
    +
    +static const struct dev_pm_ops intel_vbtn_pm_ops = {
    + .prepare = intel_vbtn_pm_prepare,
    + .resume = intel_vbtn_pm_resume,
    + .restore = intel_vbtn_pm_resume,
    + .thaw = intel_vbtn_pm_resume,
    +};
    +
    static struct platform_driver intel_vbtn_pl_driver = {
    .driver = {
    .name = "intel-vbtn",
    .acpi_match_table = intel_vbtn_ids,
    + .pm = &intel_vbtn_pm_ops,
    },
    .probe = intel_vbtn_probe,
    .remove = intel_vbtn_remove,
    \
     
     \ /
      Last update: 2017-06-01 01:37    [W:4.056 / U:0.100 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site