From 91f9e850d465147197280cbeaf51d3fb51f61ca0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 8 Jun 2017 02:15:52 +0200 Subject: [PATCH] platform: x86: intel-vbtn: Wake up the system from suspend-to-idle 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 Acked-by: Andy Shevchenko --- drivers/platform/x86/intel-vbtn.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c index c2035e121ac2..61f106377661 100644 --- a/drivers/platform/x86/intel-vbtn.c +++ b/drivers/platform/x86/intel-vbtn.c @@ -23,6 +23,7 @@ #include #include #include +#include #include MODULE_LICENSE("GPL"); @@ -46,6 +47,7 @@ static const struct key_entry intel_vbtn_keymap[] = { 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 handle, u32 event, void *context) 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 platform_device *device) if (ACPI_FAILURE(status)) return -EBUSY; + device_init_wakeup(&device->dev, true); return 0; } @@ -125,10 +134,34 @@ static int intel_vbtn_remove(struct platform_device *device) 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, -- 2.11.0