samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: sde: add helper to check VM hw availability

Telusuri Sumber 
Add a utility function to check if HW has been handed over to
another VM.

Change-Id: Ic36ca1e7f15f7608e69d69fc3f4e7ad40be15704
Signed-off-by: Steve Cohen <cohens@codeaurora.org>
This commit is contained in:
Steve Cohen
2021-08-11 17:59:00 -04:00
orang tua 9690b545df
melakukan 7f3b2f0a4b
6 mengubah file dengan 40 tambahan dan 36 penghapusan
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12
msm/sde/sde_vm_common.c
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@@ -296,16 +296,13 @@ int sde_vm_request_valid(struct sde_kms *sde_kms,
enum sde_crtc_vm_req old_state,
enum sde_crtc_vm_req new_state)
{
struct sde_vm_ops *vm_ops;
int rc = 0;
vm_ops = &sde_kms->vm->vm_ops;
bool vm_owns_hw = sde_vm_owns_hw(sde_kms);
switch (new_state) {
case VM_REQ_RELEASE:
case VM_REQ_NONE:
if ((old_state == VM_REQ_RELEASE) ||
!vm_ops->vm_owns_hw(sde_kms))
if ((old_state == VM_REQ_RELEASE) || !vm_owns_hw)
rc = -EINVAL;
break;
case VM_REQ_ACQUIRE:
@@ -318,9 +315,8 @@ int sde_vm_request_valid(struct sde_kms *sde_kms,
};
SDE_DEBUG("old req: %d new req: %d owns_hw: %d, rc: %d\n",
old_state, new_state,
vm_ops->vm_owns_hw(sde_kms), rc);
SDE_EVT32(old_state, new_state, vm_ops->vm_owns_hw(sde_kms), rc);
old_state, new_state, vm_owns_hw, rc);
SDE_EVT32(old_state, new_state, vm_owns_hw, rc);
return rc;
}