Hi Dmity,
於 一，2010-10-18 於 01:12 -0700，Dmitry Torokhov 提到：
> On Sun, Oct 17, 2010 at 10:53:04PM -0600, Joey Lee wrote:
> > Hi Dmitry,
> >
> > 於 三，2010-10-13 於 11:24 -0700，Dmitry Torokhov 提到：
> > > Hi Joey,
> > >
> > > On Wed, Oct 13, 2010 at 11:47:40AM +0800, Lee, Chun-Yi wrote:
> > > +
> > > > + status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
> > > > + acer_wmi_notify, NULL);
> > > > + if (ACPI_FAILURE(status)) {
> > > > + err = -EIO;
> > > > + goto err_unregister_input;
> > > > + }
> > > > +
> > > > + return 0;
> > > > +
> > > > +err_unregister_input:
> > > > + input_unregister_device(acer_wmi_input_dev);
> > > > +err_free_keymap:
> > > > + sparse_keymap_free(acer_wmi_input_dev);
> > > > +err_free_dev:
> > > > + input_free_device(acer_wmi_input_dev);
> > >
> > > If wmi_install_notify_handler() fails you'll end up doing
> > > input_unregister_device() + input_free_device() which is forbidden. To
> > > avoid this issue register the device after installing the handler. As
> > > long as input device is properly allocated (by calling
> > > input_allocate_device) it is safe to use it to send events (although
> > > they will not go anywhere).
> > >
> > > BTW, I think it is high time we allocate a dedicated key for touchpad
> > > on/off....
> > >
> >
> > Thank's for your review.
> > I changed the error handler priority:
> >
> > >From 9e31867c348a1f2119d16ddbcf9cf0b7de111cf9 Mon Sep 17 00:00:00 2001
> > From: Lee, Chun-Yi <[email protected]>
> > Date: Mon, 18 Oct 2010 12:12:49 +0800
> > Subject: [PATCH 1/3] Add acer wmi hotkey events support
> >
> > Add acer wmi hotkey event support. Install a wmi notify handler to
> > transfer wmi event key to key code, then send out keycode through acer
> > wmi input device to userland.
> >
> > Signed-off-by: Lee, Chun-Yi <[email protected]>
>
> Looks good to me, thank you for making changes.
>
You are welcome, and also thank's for your kindly review my patches.
> >
> > @@ -48,6 +50,7 @@ MODULE_LICENSE("GPL");
> > #define ACER_ERR KERN_ERR ACER_LOGPREFIX
> > #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
> > #define ACER_INFO KERN_INFO ACER_LOGPREFIX
> > +#define ACER_WARNING KERN_WARNING ACER_LOGPREFIX
> >
>
> As a separate change could you please move the driver to using pr_err()
> and friends?
>
Got it, will generate patch to using pr_err().
> > /*
> > * Magic Number
> > @@ -83,8 +86,39 @@ MODULE_LICENSE("GPL");
> > #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
> > #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
> >
> > +/*
> > + * Acer ACPI event GUIDs
> > + */
> > +#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
> > +
> > MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
> > MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
> > +MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
> > +
> > +enum acer_wmi_event_ids {
> > + WMID_HOTKEY_EVENT = 0x1,
> > +};
> > +
> > +static const struct key_entry acer_wmi_keymap[] = {
> > + {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
> > + {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
> > + {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
> > + {KE_KEY, 0x22, {KEY_PROG2} }, /* Aracade */
> > + {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
> > + {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
> > + {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
> > + {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */
>
> We need to standardize this. Some people use F13/F14, here we have
> F22...
>
Currently, evdev is mapping the F22 to XF86TouchpadToggle:
http://cgit.freedesktop.org/xkeyboard-config/commit/?id=1d05eda8dfc706d6450cab5883120e0d5e1100c
Thank's
Joey Lee
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