diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_panel.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/video/fbdev/msm/mdss_panel.h b/drivers/video/fbdev/msm/mdss_panel.h index d230100c8724..9e8cfa709838 100644 --- a/drivers/video/fbdev/msm/mdss_panel.h +++ b/drivers/video/fbdev/msm/mdss_panel.h @@ -55,8 +55,35 @@ enum { MAX_PHYS_TARGET_NUM, }; +/** + * enum mdss_intf_events - Different events generated by MDP core + * + * @MDSS_EVENT_RESET: MDP control path is being (re)initialized. + * @MDSS_EVENT_UNBLANK: Sent before first frame update from MDP is + * sent to panel. + * @MDSS_EVENT_PANEL_ON: After first frame update from MDP. + * @MDSS_EVENT_BLANK: MDP has no contents to display only blank screen + * is shown in panel. Sent before panel off. + * @MDSS_EVENT_PANEL_OFF: MDP has suspended frame updates, panel should be + * completely shutdown after this call. + * @MDSS_EVENT_CLOSE: MDP has tore down entire session. + * @MDSS_EVENT_SUSPEND: Propagation of power suspend event. + * @MDSS_EVENT_RESUME: Propagation of power resume event. + * @MDSS_EVENT_CHECK_PARAMS: Event generated when a panel reconfiguration is + * requested including when resolution changes. + * The event handler receives pointer to + * struct mdss_panel_info and should return one of: + * - negative if the configuration is invalid + * - 0 if there is no panel reconfig needed + * - 1 if reconfig is needed to take effect + * @MDSS_EVENT_CONT_SPLASH_FINISH: Special event used to handle transition of + * display state from boot loader to panel driver. + * @MDSS_EVENT_FB_REGISTERED: Called after fb dev driver has been registered, + * panel driver gets ptr to struct fb_info which + * holds fb dev information. + */ enum mdss_intf_events { - MDSS_EVENT_RESET, + MDSS_EVENT_RESET = 1, MDSS_EVENT_UNBLANK, MDSS_EVENT_PANEL_ON, MDSS_EVENT_BLANK, @@ -214,7 +241,18 @@ struct mdss_panel_data { void (*set_backlight) (struct mdss_panel_data *pdata, u32 bl_level); unsigned char *mmss_cc_base; - /* function entry chain */ + /** + * event_handler() - callback handler for MDP core events + * @pdata: Pointer refering to the panel struct associated to this + * event. Can be used to retrieve panel info. + * @e: Event being generated, see enum mdss_intf_events + * @arg: Optional argument to pass some info from some events. + * + * Used to register handler to be used to propagate different events + * happening in MDP core driver. Panel driver can listen for any of + * these events to perform appropriate actions for panel initialization + * and teardown. + */ int (*event_handler) (struct mdss_panel_data *pdata, int e, void *arg); struct mdss_panel_data *next; |