msm: camera: common: Enhance seamless switch support

Mode switch delay is an inherent property of a sensor.
Similarly IFE has a static switch delay of 1. For sensors
with switch delay > 1 need special handling on certain
occasions. It is possible that switch settings was applied
to sensor, and on the next frame if there is a flash inject
delay or a packet delay, sensor & IFE are bound to go out of sync.
To address such cases, IFE will decide if it needs to apply
MUP on a dropped frame or not, along with any corresponding
IQ settings.

CRs-Fixed: 3320774
Change-Id: I355fa0f8b767d44bd3fb87c91b3cbf56fb9c3933
Signed-off-by: Karthik Anantha Ram <quic_kartanan@quicinc.com>

drivers/cam_isp/cam_isp_context.h

@@ -303,6 +303,15 @@ struct cam_isp_context_event_record {
  * @last_applied_jiffies:      Record the jiffiest of last applied req
  * @vfe_bus_comp_grp:          Vfe bus comp group record
  * @sfe_bus_comp_grp:          Sfe bus comp group record
+ * @mswitch_default_apply_delay_max_cnt: Max mode switch delay among all devices connected
+ *                                       on the same link as this ISP context
+ * @mswitch_default_apply_delay_ref_cnt: Ref cnt for this context to decide when to apply
+ *                                       mode switch settings
+ * @handle_mswitch:            Indicates if IFE needs to explicitly handle mode switch
+ *                             on frame skip callback from request manager.
+ *                             This is decided based on the max mode switch delay published
+ *                             by other devices on the link as part of link setup
+ * @mode_switch_en:            Indicates if mode switch is enabled
  *
  */
 struct cam_isp_context {
@@ -366,6 +375,10 @@ struct cam_isp_context {
 	uint64_t                              last_applied_jiffies;
 	struct cam_isp_context_comp_record   *vfe_bus_comp_grp;
 	struct cam_isp_context_comp_record   *sfe_bus_comp_grp;
+	int32_t                               mswitch_default_apply_delay_max_cnt;
+	atomic_t                              mswitch_default_apply_delay_ref_cnt;
+	bool                                  handle_mswitch;
+	bool                                  mode_switch_en;
 };
 
 /**