disp: msm: sde: reserve resources on trusted vm usecase start

The MEM & IRQ lend handlers signals the resources
are lent from the primary VM. Reserve the SDE HW
resources in trusted VM using the cont-splash path
and setup the SDE & DRM software states. Set the
DSI connector status to active for the handoff
display during the start and disable it at the end
of the session.

Change-Id: I75b6df735eb5609cc521808aca0ddfb0b3993e84
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>

msm/sde/sde_kms.h

@@ -701,6 +701,19 @@ void sde_kms_irq_enable_notify(struct sde_kms *sde_kms, bool enable);
  */
 int sde_kms_get_io_resources(struct sde_kms *kms, struct msm_io_res *io_res);
 
+/**
+ * sde_kms_vm_trusted_resource_init - reserve/initialize the HW/SW resources
+ * @sde_kms: poiner to sde_kms structure
+ * return: 0 on success; error code otherwise
+ */
+int sde_kms_vm_trusted_resource_init(struct sde_kms *sde_kms);
+
+/**
+ * sde_kms_vm_trusted_resource_deinit - release the HW/SW resources
+ * @sde_kms: poiner to sde_kms structure
+ */
+void sde_kms_vm_trusted_resource_deinit(struct sde_kms *sde_kms);
+
 /**
  * sde_kms_vm_trusted_post_commit - function to prepare the VM after the
  *				    last commit before releasing the HW
@@ -710,6 +723,7 @@ int sde_kms_get_io_resources(struct sde_kms *kms, struct msm_io_res *io_res);
  */
 int sde_kms_vm_trusted_post_commit(struct sde_kms *sde_kms,
 	struct drm_atomic_state *state);
+
 /**
  * sde_kms_vm_primary_post_commit - function to prepare the VM after the
  *				    last commit before assign the HW
@@ -738,5 +752,4 @@ int sde_kms_vm_trusted_prepare_commit(struct sde_kms *sde_kms,
  */
 int sde_kms_vm_primary_prepare_commit(struct sde_kms *sde_kms,
 					   struct drm_atomic_state *state);
-
 #endif /* __sde_kms_H__ */