[PATCH 4/4] Added console_event_register() and console_event_unregister() for OLPC DCON driver support

Andres Salomon dilinger at queued.net
Thu Feb 25 06:53:02 UTC 2010


This one is unused and unnecessary.  It should be dropped.


On Thu, 25 Feb 2010 14:31:28 +0800
Raymond Lai <airwave209gt at gmail.com> wrote:

> From: Raymond Lai <airwave at cinderella.(none)>
> 
> The method declarations are taken from OLPC's kernel source tree.
> 
> Signed-off-by: Raymond Lai <airwave209gt at gmail.com>
> ---
>  drivers/char/vt_ioctl.c |    3 +++
>  include/linux/vt_kern.h |   19 +++++++++++++++++++
>  2 files changed, 22 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
> index 95189f2..0fbd901 100644
> --- a/drivers/char/vt_ioctl.c
> +++ b/drivers/char/vt_ioctl.c
> @@ -39,6 +39,9 @@
>  char vt_dont_switch;
>  extern struct tty_driver *console_driver;
>  
> +/* Add a notifier chain to inform drivers of a VT_TEXT/VT_GRAPHICS
> switch */ +RAW_NOTIFIER_HEAD(console_notifier_list);
> +
>  #define VT_IS_IN_USE(i)	(console_driver->ttys[i] &&
> console_driver->ttys[i]->count) #define VT_BUSY(i)
> (VT_IS_IN_USE(i) || i == fg_console || vc_cons[i].d == sel_cons) 
> diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
> index 2f11134..f257b3b 100644
> --- a/include/linux/vt_kern.h
> +++ b/include/linux/vt_kern.h
> @@ -116,4 +116,23 @@ struct vt_spawn_console {
>  };
>  extern struct vt_spawn_console vt_spawn_con;
>  
> +/* A notifier list for console events  */
> +extern struct raw_notifier_head console_notifier_list;
> +
> +/* Called when the FG console switches to KD_TEXT mode */
> +#define CONSOLE_EVENT_SWITCH_TEXT 0x01
> +
> +/* Called when the FG console switches to KD_GRAPHICS mode */
> +#define CONSOLE_EVENT_SWITCH_GRAPHICS 0x02
> +
> +static inline int console_event_register(struct notifier_block *n)
> +{
> +	return raw_notifier_chain_register(&console_notifier_list,
> n); +}
> +
> +static inline int console_event_unregister(struct notifier_block *n)
> +{
> +	return raw_notifier_chain_unregister(&console_notifier_list,
> n); +}
> +
>  #endif /* _VT_KERN_H */




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