linux-kernel - Re: [PATCH 1/3] toshiba_acpi: Add Hotkey Event Type function and definitions

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Date:	Fri, 6 Mar 2015 10:21:02 -0800
From:	Darren Hart <dvhart@...radead.org>
To:	Azael Avalos <coproscefalo@...il.com>
Cc:	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] toshiba_acpi: Add Hotkey Event Type function and
 definitions

On Thu, Feb 26, 2015 at 10:57:12AM -0700, Azael Avalos wrote:

Hi Azael,

I'm pretty behind on this one, apologies.

> This patch adds support to query the "Hotkey Event Type" the system
> supports.
> 
> There are two main event types (so far), 0x10 and 0x11, with the
> first beign all those laptops that have the old keyboard layout, and

being

> the latter all those new laptops with the new keyboard layout.
> 

Some concern about this binary "new" and "old". What happens in 2 years when
they decide to break^W change our keyboards again?

> Signed-off-by: Azael Avalos <coproscefalo@...il.com>
> ---
>  drivers/platform/x86/toshiba_acpi.c | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
> index dbcb7a8..e6aa8f9 100644
> --- a/drivers/platform/x86/toshiba_acpi.c
> +++ b/drivers/platform/x86/toshiba_acpi.c
> @@ -116,6 +116,7 @@ MODULE_LICENSE("GPL");
>  #define HCI_KBD_ILLUMINATION		0x0095
>  #define HCI_ECO_MODE			0x0097
>  #define HCI_ACCELEROMETER2		0x00a6
> +#define HCI_HOTKEY_EVENT_TYPE		0xc000
>  #define SCI_PANEL_POWER_ON		0x010d
>  #define SCI_ILLUMINATION		0x014e
>  #define SCI_USB_SLEEP_CHARGE		0x0150
> @@ -127,8 +128,11 @@ MODULE_LICENSE("GPL");
>  
>  /* field definitions */
>  #define HCI_ACCEL_MASK			0x7fff
> +#define HCI_HOTKEY_EVENT_NORMAL		0x10
> +#define HCI_HOTKEY_EVENT_SPECIAL	0x11

NORMAL and SPECIAL? Hrm... what comes after special? EXTRASPECIAL? ;-)

Or am I not looking at this right? Is there reason to expect these two to be
sufficient?

>  #define HCI_HOTKEY_DISABLE		0x0b
>  #define HCI_HOTKEY_ENABLE		0x09
> +#define HCI_HOTKEY_ENABLE_SPECIAL	0x10
>  #define HCI_LCD_BRIGHTNESS_BITS		3
>  #define HCI_LCD_BRIGHTNESS_SHIFT	(16-HCI_LCD_BRIGHTNESS_BITS)
>  #define HCI_LCD_BRIGHTNESS_LEVELS	(1 << HCI_LCD_BRIGHTNESS_BITS)
> @@ -1149,6 +1153,28 @@ static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
>  	return 0;
>  }
>  
> +/* Hotkey event type */
> +static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
> +					 u32 *hotkey_event_type)
> +{
> +	u32 val1 = 0x03;
> +	u32 val2 = 0;
> +	u32 result;
> +
> +	result = hci_read2(dev, HCI_HOTKEY_EVENT_TYPE, &val1, &val2);
> +	if (result == TOS_FAILURE) {
> +		pr_err("ACPI callto get Hotkey Event type failed\n");

call to

Thanks,

-- 
Darren Hart
Intel Open Source Technology Center
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