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[PATCH 1/2] platform/x86: Add Asus Wireless Radio Control driver

Started by"João Paulo Rechi Vita" <jprvita@gmail.com>
First post2016-01-05 14:30 +0100
Last post2016-01-05 18:30 +0100
Articles 4 — 3 participants

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  [PATCH 1/2] platform/x86: Add Asus Wireless Radio Control driver "João Paulo Rechi Vita" <jprvita@gmail.com> - 2016-01-05 14:30 +0100
    Re: [PATCH 1/2] platform/x86: Add Asus Wireless Radio Control driver Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-01-05 15:00 +0100
      [PATCH] platform/x86: Add Asus Wireless Radio Control driver "João Paulo Rechi Vita" <jprvita@gmail.com> - 2016-01-05 17:20 +0100
        Re: [PATCH] platform/x86: Add Asus Wireless Radio Control driver Darren Hart <dvhart@infradead.org> - 2016-01-05 18:30 +0100

#1301525 — [PATCH 1/2] platform/x86: Add Asus Wireless Radio Control driver

From"João Paulo Rechi Vita" <jprvita@gmail.com>
Date2016-01-05 14:30 +0100
Subject[PATCH 1/2] platform/x86: Add Asus Wireless Radio Control driver
Message-ID<qNzQu-3l3-11@gated-at.bofh.it>
Some Asus notebooks like the Asus E202SA and the Asus X555UB have a
separate ACPI device for notifications from the airplane mode hotkey.
This device is called "Wireless Radio Control" in Asus websites and ASHS
in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned
above.

For these models, when the airplane mode hotkey (Fn+F2) is pressed, a
query 0x0B is started in the Embedded Controller, and all this query does
is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"):

	Scope (_SB.PCI0.SBRG.EC0)
	{
		(...)
		Method (_Q0B, 0, NotSerialized)  // _Qxx: EC Query
		{
			If ((MSOS () >= OSW8))
			{
				Notify (ASHS, 0x88) // Device-Specific
			}
			Else
			{
				(...)
			}
		}
	}

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
---
 MAINTAINERS                          |  6 +++
 drivers/platform/x86/Kconfig         | 15 +++++++
 drivers/platform/x86/Makefile        |  1 +
 drivers/platform/x86/asus-wireless.c | 83 ++++++++++++++++++++++++++++++++++++
 4 files changed, 105 insertions(+)
 create mode 100644 drivers/platform/x86/asus-wireless.c

diff --git a/MAINTAINERS b/MAINTAINERS
index c984136..e1860f2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1791,6 +1791,12 @@ S:	Maintained
 F:	drivers/platform/x86/asus*.c
 F:	drivers/platform/x86/eeepc*.c
 
+ASUS WIRELESS RADIO CONTROL DRIVER
+M:	João Paulo Rechi Vita <jprvita@gmail.com>
+L:	platform-driver-x86@vger.kernel.org
+S:	Maintained
+F:	drivers/platform/x86/asus-wireless.c
+
 ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API
 R:	Dan Williams <dan.j.williams@intel.com>
 W:	http://sourceforge.net/projects/xscaleiop
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index d0bfcf8..d3a088b 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -587,6 +587,21 @@ config EEEPC_WMI
 	  If you have an ACPI-WMI compatible Eee PC laptop (>= 1000), say Y or M
 	  here.
 
+config ASUS_WIRELESS
+	tristate "Asus Wireless Radio Control Driver"
+	depends on ACPI
+	depends on INPUT
+	default m
+	---help---
+	  The Asus Wireless Radio Control handles the airplane mode hotkey
+	  present on some Asus laptops.
+
+	  Say Y or M here if you have an ASUS notebook with an airplane mode
+	  hotkey.
+
+	  If you choose to compile this driver as a module the module will be
+	  called asus-wireless.
+
 config ACPI_WMI
 	tristate "WMI"
 	depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 4410e91..8b8df29 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -5,6 +5,7 @@
 obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_ASUS_WMI)		+= asus-wmi.o
 obj-$(CONFIG_ASUS_NB_WMI)	+= asus-nb-wmi.o
+obj-$(CONFIG_ASUS_WIRELESS)	+= asus-wireless.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_EEEPC_WMI)		+= eeepc-wmi.o
 obj-$(CONFIG_MSI_LAPTOP)	+= msi-laptop.o
diff --git a/drivers/platform/x86/asus-wireless.c b/drivers/platform/x86/asus-wireless.c
new file mode 100644
index 0000000..c7279e9
--- /dev/null
+++ b/drivers/platform/x86/asus-wireless.c
@@ -0,0 +1,83 @@
+/*
+ * Asus Wireless Radio Control Driver
+ *
+ * Copyright (C) 2015-2016 Endless Mobile, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/input.h>
+#include <linux/pci_ids.h>
+
+struct asus_wireless_data {
+	struct input_dev *inputdev;
+};
+
+static void asus_wireless_notify(struct acpi_device *device, u32 event)
+{
+	struct asus_wireless_data *data = acpi_driver_data(device);
+
+	dev_dbg(&device->dev, "event=0x%X\n", event);
+	if (event != 0x88) {
+		dev_notice(&device->dev, "Unknown ASHS event: 0x%X\n", event);
+		return;
+	}
+	input_report_key(data->inputdev, KEY_RFKILL, 1);
+	input_report_key(data->inputdev, KEY_RFKILL, 0);
+	input_sync(data->inputdev);
+}
+
+static int asus_wireless_add(struct acpi_device *device)
+{
+	struct asus_wireless_data *data;
+
+	data = devm_kzalloc(&device->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+	device->driver_data = data;
+
+	data->inputdev = devm_input_allocate_device(&device->dev);
+	if (!data->inputdev)
+		return -ENOMEM;
+	data->inputdev->name = "Asus Wireless Radio Control";
+	data->inputdev->phys = "asus-wireless/input0";
+	data->inputdev->id.bustype = BUS_HOST;
+	data->inputdev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
+	set_bit(EV_KEY, data->inputdev->evbit);
+	set_bit(KEY_RFKILL, data->inputdev->keybit);
+	return input_register_device(data->inputdev);
+}
+
+static int asus_wireless_remove(struct acpi_device *device)
+{
+	return 0;
+}
+
+static const struct acpi_device_id device_ids[] = {
+	{"ATK4002", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, device_ids);
+
+static struct acpi_driver asus_wireless_driver = {
+	.name = "Asus Wireless Radio Control Driver",
+	.class = "hotkey",
+	.ids = device_ids,
+	.ops = {
+		.add = asus_wireless_add,
+		.remove = asus_wireless_remove,
+		.notify = asus_wireless_notify,
+	},
+};
+module_acpi_driver(asus_wireless_driver);
+
+MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
+MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
+MODULE_LICENSE("GPL");
-- 
2.5.0

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#1301545

FromAndy Shevchenko <andy.shevchenko@gmail.com>
Date2016-01-05 15:00 +0100
Message-ID<qNAjx-3vz-9@gated-at.bofh.it>
In reply to#1301525
On Tue, Jan 5, 2016 at 3:26 PM, João Paulo Rechi Vita <jprvita@gmail.com> wrote:
> Some Asus notebooks like the Asus E202SA and the Asus X555UB have a
> separate ACPI device for notifications from the airplane mode hotkey.
> This device is called "Wireless Radio Control" in Asus websites and ASHS
> in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned
> above.
>
> For these models, when the airplane mode hotkey (Fn+F2) is pressed, a
> query 0x0B is started in the Embedded Controller, and all this query does
> is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"):
>
>         Scope (_SB.PCI0.SBRG.EC0)
>         {
>                 (...)
>                 Method (_Q0B, 0, NotSerialized)  // _Qxx: EC Query
>                 {
>                         If ((MSOS () >= OSW8))
>                         {
>                                 Notify (ASHS, 0x88) // Device-Specific
>                         }
>                         Else
>                         {
>                                 (...)
>                         }
>                 }
>         }

Few nitpicks below. In any case looks fine to me.

> --- a/drivers/platform/x86/Kconfig
> +++ b/drivers/platform/x86/Kconfig
> @@ -587,6 +587,21 @@ config EEEPC_WMI
>           If you have an ACPI-WMI compatible Eee PC laptop (>= 1000), say Y or M
>           here.
>
> +config ASUS_WIRELESS
> +       tristate "Asus Wireless Radio Control Driver"
> +       depends on ACPI
> +       depends on INPUT

> +       default m

Hmm… Usually we leave this for OSVs (OS Vendors) to decide. Or, like
you mentioned below, to the user.

> +       ---help---
> +         The Asus Wireless Radio Control handles the airplane mode hotkey
> +         present on some Asus laptops.
> +
> +         Say Y or M here if you have an ASUS notebook with an airplane mode
> +         hotkey.

…here is inconsistency with default value.

> +
> +         If you choose to compile this driver as a module the module will be
> +         called asus-wireless.
> +


> +++ b/drivers/platform/x86/asus-wireless.c
> @@ -0,0 +1,83 @@
> +/*
> + * Asus Wireless Radio Control Driver
> + *
> + * Copyright (C) 2015-2016 Endless Mobile, Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/types.h>
> +#include <linux/acpi.h>
> +#include <linux/input.h>
> +#include <linux/pci_ids.h>
> +
> +struct asus_wireless_data {
> +       struct input_dev *inputdev;

I would suggest
*inputdev -> *idev

> +};
> +
> +static void asus_wireless_notify(struct acpi_device *device, u32 event)

In ACPI code and drivers we usually use struct acpi_device *adev.

> +{
> +       struct asus_wireless_data *data = acpi_driver_data(device);
> +
> +       dev_dbg(&device->dev, "event=0x%X\n", event);
> +       if (event != 0x88) {
> +               dev_notice(&device->dev, "Unknown ASHS event: 0x%X\n", event);
> +               return;

I believe %#X will work in both cases instead of 0x%X

> +       }
> +       input_report_key(data->inputdev, KEY_RFKILL, 1);
> +       input_report_key(data->inputdev, KEY_RFKILL, 0);
> +       input_sync(data->inputdev);
> +}
> +
> +static int asus_wireless_add(struct acpi_device *device)
> +{
> +       struct asus_wireless_data *data;
> +
> +       data = devm_kzalloc(&device->dev, sizeof(*data), GFP_KERNEL);
> +       if (!data)
> +               return -ENOMEM;
> +       device->driver_data = data;
> +
> +       data->inputdev = devm_input_allocate_device(&device->dev);
> +       if (!data->inputdev)
> +               return -ENOMEM;
> +       data->inputdev->name = "Asus Wireless Radio Control";
> +       data->inputdev->phys = "asus-wireless/input0";
> +       data->inputdev->id.bustype = BUS_HOST;
> +       data->inputdev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
> +       set_bit(EV_KEY, data->inputdev->evbit);
> +       set_bit(KEY_RFKILL, data->inputdev->keybit);
> +       return input_register_device(data->inputdev);
> +}
> +
> +static int asus_wireless_remove(struct acpi_device *device)
> +{
> +       return 0;
> +}
> +
> +static const struct acpi_device_id device_ids[] = {
> +       {"ATK4002", 0},
> +       {"", 0},
> +};
> +MODULE_DEVICE_TABLE(acpi, device_ids);
> +
> +static struct acpi_driver asus_wireless_driver = {
> +       .name = "Asus Wireless Radio Control Driver",
> +       .class = "hotkey",
> +       .ids = device_ids,
> +       .ops = {
> +               .add = asus_wireless_add,
> +               .remove = asus_wireless_remove,
> +               .notify = asus_wireless_notify,
> +       },
> +};
> +module_acpi_driver(asus_wireless_driver);
> +
> +MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
> +MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
> +MODULE_LICENSE("GPL");
> --
> 2.5.0
>



-- 
With Best Regards,
Andy Shevchenko
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#1301663 — [PATCH] platform/x86: Add Asus Wireless Radio Control driver

From"João Paulo Rechi Vita" <jprvita@gmail.com>
Date2016-01-05 17:20 +0100
Subject[PATCH] platform/x86: Add Asus Wireless Radio Control driver
Message-ID<qNCv0-5eI-3@gated-at.bofh.it>
In reply to#1301545
Some Asus notebooks like the Asus E202SA and the Asus X555UB have a
separate ACPI device for notifications from the airplane mode hotkey.
This device is called "Wireless Radio Control" in Asus websites and ASHS
in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned
above.

For these models, when the airplane mode hotkey (Fn+F2) is pressed, a
query 0x0B is started in the Embedded Controller, and all this query does
is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"):

	Scope (_SB.PCI0.SBRG.EC0)
	{
		(...)
		Method (_Q0B, 0, NotSerialized)  // _Qxx: EC Query
		{
			If ((MSOS () >= OSW8))
			{
				Notify (ASHS, 0x88) // Device-Specific
			}
			Else
			{
				(...)
			}
		}
	}

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 MAINTAINERS                          |  6 +++
 drivers/platform/x86/Kconfig         | 14 ++++++
 drivers/platform/x86/Makefile        |  1 +
 drivers/platform/x86/asus-wireless.c | 83 ++++++++++++++++++++++++++++++++++++
 4 files changed, 104 insertions(+)
 create mode 100644 drivers/platform/x86/asus-wireless.c

diff --git a/MAINTAINERS b/MAINTAINERS
index c984136..e1860f2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1791,6 +1791,12 @@ S:	Maintained
 F:	drivers/platform/x86/asus*.c
 F:	drivers/platform/x86/eeepc*.c
 
+ASUS WIRELESS RADIO CONTROL DRIVER
+M:	João Paulo Rechi Vita <jprvita@gmail.com>
+L:	platform-driver-x86@vger.kernel.org
+S:	Maintained
+F:	drivers/platform/x86/asus-wireless.c
+
 ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API
 R:	Dan Williams <dan.j.williams@intel.com>
 W:	http://sourceforge.net/projects/xscaleiop
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index d0bfcf8..749684e 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -587,6 +587,20 @@ config EEEPC_WMI
 	  If you have an ACPI-WMI compatible Eee PC laptop (>= 1000), say Y or M
 	  here.
 
+config ASUS_WIRELESS
+	tristate "Asus Wireless Radio Control Driver"
+	depends on ACPI
+	depends on INPUT
+	---help---
+	  The Asus Wireless Radio Control handles the airplane mode hotkey
+	  present on some Asus laptops.
+
+	  Say Y or M here if you have an ASUS notebook with an airplane mode
+	  hotkey.
+
+	  If you choose to compile this driver as a module the module will be
+	  called asus-wireless.
+
 config ACPI_WMI
 	tristate "WMI"
 	depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 4410e91..8b8df29 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -5,6 +5,7 @@
 obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_ASUS_WMI)		+= asus-wmi.o
 obj-$(CONFIG_ASUS_NB_WMI)	+= asus-nb-wmi.o
+obj-$(CONFIG_ASUS_WIRELESS)	+= asus-wireless.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_EEEPC_WMI)		+= eeepc-wmi.o
 obj-$(CONFIG_MSI_LAPTOP)	+= msi-laptop.o
diff --git a/drivers/platform/x86/asus-wireless.c b/drivers/platform/x86/asus-wireless.c
new file mode 100644
index 0000000..5058d48
--- /dev/null
+++ b/drivers/platform/x86/asus-wireless.c
@@ -0,0 +1,83 @@
+/*
+ * Asus Wireless Radio Control Driver
+ *
+ * Copyright (C) 2015-2016 Endless Mobile, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/input.h>
+#include <linux/pci_ids.h>
+
+struct asus_wireless_data {
+	struct input_dev *idev;
+};
+
+static void asus_wireless_notify(struct acpi_device *adev, u32 event)
+{
+	struct asus_wireless_data *data = acpi_driver_data(adev);
+
+	dev_dbg(&adev->dev, "event=%#x\n", event);
+	if (event != 0x88) {
+		dev_notice(&adev->dev, "Unknown ASHS event: %#x\n", event);
+		return;
+	}
+	input_report_key(data->idev, KEY_RFKILL, 1);
+	input_report_key(data->idev, KEY_RFKILL, 0);
+	input_sync(data->idev);
+}
+
+static int asus_wireless_add(struct acpi_device *adev)
+{
+	struct asus_wireless_data *data;
+
+	data = devm_kzalloc(&adev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+	adev->driver_data = data;
+
+	data->idev = devm_input_allocate_device(&adev->dev);
+	if (!data->idev)
+		return -ENOMEM;
+	data->idev->name = "Asus Wireless Radio Control";
+	data->idev->phys = "asus-wireless/input0";
+	data->idev->id.bustype = BUS_HOST;
+	data->idev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
+	set_bit(EV_KEY, data->idev->evbit);
+	set_bit(KEY_RFKILL, data->idev->keybit);
+	return input_register_device(data->idev);
+}
+
+static int asus_wireless_remove(struct acpi_device *adev)
+{
+	return 0;
+}
+
+static const struct acpi_device_id device_ids[] = {
+	{"ATK4002", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, device_ids);
+
+static struct acpi_driver asus_wireless_driver = {
+	.name = "Asus Wireless Radio Control Driver",
+	.class = "hotkey",
+	.ids = device_ids,
+	.ops = {
+		.add = asus_wireless_add,
+		.remove = asus_wireless_remove,
+		.notify = asus_wireless_notify,
+	},
+};
+module_acpi_driver(asus_wireless_driver);
+
+MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
+MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
+MODULE_LICENSE("GPL");
-- 
2.5.0

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#1301730 — Re: [PATCH] platform/x86: Add Asus Wireless Radio Control driver

FromDarren Hart <dvhart@infradead.org>
Date2016-01-05 18:30 +0100
SubjectRe: [PATCH] platform/x86: Add Asus Wireless Radio Control driver
Message-ID<qNDAL-5X5-27@gated-at.bofh.it>
In reply to#1301663
On Tue, Jan 05, 2016 at 11:16:53AM -0500, João Paulo Rechi Vita wrote:
> Some Asus notebooks like the Asus E202SA and the Asus X555UB have a
> separate ACPI device for notifications from the airplane mode hotkey.
> This device is called "Wireless Radio Control" in Asus websites and ASHS
> in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned
> above.
> 
> For these models, when the airplane mode hotkey (Fn+F2) is pressed, a
> query 0x0B is started in the Embedded Controller, and all this query does
> is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"):
> 
> 	Scope (_SB.PCI0.SBRG.EC0)
> 	{
> 		(...)
> 		Method (_Q0B, 0, NotSerialized)  // _Qxx: EC Query
> 		{
> 			If ((MSOS () >= OSW8))
> 			{
> 				Notify (ASHS, 0x88) // Device-Specific
> 			}
> 			Else
> 			{
> 				(...)
> 			}
> 		}
> 	}
> 
> Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

Queued to testing, thanks!

-- 
Darren Hart
Intel Open Source Technology Center
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