diff options
Diffstat (limited to 'include/linux/console.h')
| -rw-r--r-- | include/linux/console.h | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/include/linux/console.h b/include/linux/console.h index d624200cfc17..cb8be9ea4a76 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -55,9 +55,12 @@ enum vc_intensity; * Invoked by csi_M and printing to the console. * @con_switch: notifier about the console switch; it is supposed to return * true if a redraw is needed. - * @con_blank: blank/unblank the console. The target mode is passed in @blank. - * @mode_switch is set if changing from/to text/graphics. The hook - * is supposed to return true if a redraw is needed. + * @con_blank: blank the console. The preferred VESA blank mode is passed in + * @blank. @mode_switch is set if changing from/to text/graphics. + * The hook is supposed to return true if a redraw is needed. + * @con_unblank: unblank the console. The hook is supposed to return true if + * a redraw is needed. @mode_switch is set if changing from/to + * text/graphics. * @con_font_set: set console @vc font to @font with height @vpitch. @flags can * be %KD_FONT_FLAG_DONT_RECALC. (optional) * @con_font_get: fetch the current font on @vc of height @vpitch into @font. @@ -99,6 +102,7 @@ struct consw { bool (*con_switch)(struct vc_data *vc); bool (*con_blank)(struct vc_data *vc, enum vesa_blank_mode blank, bool mode_switch); + bool (*con_unblank)(struct vc_data *vc, bool mode_switch); int (*con_font_set)(struct vc_data *vc, const struct console_font *font, unsigned int vpitch, unsigned int flags); @@ -173,7 +177,7 @@ static inline void con_debug_leave(void) { } * @CON_BRL: Indicates a braille device which is exempt from * receiving the printk spam for obvious reasons. * @CON_EXTENDED: The console supports the extended output format of - * /dev/kmesg which requires a larger output buffer. + * /dev/kmsg which requires a larger output buffer. * @CON_SUSPENDED: Indicates if a console is suspended. If true, the * printing callbacks must not be called. * @CON_NBCON: Console can operate outside of the legacy style console_lock @@ -615,6 +619,15 @@ extern bool nbcon_allow_unsafe_takeover(void); extern bool nbcon_kdb_try_acquire(struct console *con, struct nbcon_write_context *wctxt); extern void nbcon_kdb_release(struct nbcon_write_context *wctxt); +extern bool nbcon_write_context_is_braille(struct nbcon_write_context *wctxt); +extern bool nbcon_braille_try_acquire(struct console *con, + struct nbcon_write_context *wctxt); +extern void nbcon_braille_release(struct nbcon_write_context *wctxt); + +static inline bool nbcon_is_braille(struct console *con) +{ + return con && (con->flags & CON_BRL); +} /* * Check if the given console is currently capable and allowed to print @@ -678,8 +691,14 @@ static inline void nbcon_reacquire_nobuf(struct nbcon_write_context *wctxt) { } static inline bool nbcon_kdb_try_acquire(struct console *con, struct nbcon_write_context *wctxt) { return false; } static inline void nbcon_kdb_release(struct nbcon_write_context *wctxt) { } +static inline +bool nbcon_write_context_is_braille(struct nbcon_write_context *wctxt) { return false; } static inline bool console_is_usable(struct console *con, short flags, bool use_atomic) { return false; } +static inline bool nbcon_braille_try_acquire(struct console *con, + struct nbcon_write_context *wctxt) { return false; } +static inline void nbcon_braille_release(struct nbcon_write_context *wctxt) { } +static inline bool nbcon_is_braille(struct console *con) { return false; } #endif extern int console_set_on_cmdline; |