[PATCH 05/16] media: iris: add vpu op hook to disable ARP buffer

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

From: Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>

On AR50LT platforms AbsolutelyPerfectRouting (ARP) needs to be disabled
so firmware can configure the ARP internal buffer as non-secure for
encoder usage. In preparation of adding support for AR50LT platforms,
add an optional disable_arp callback to the VPU ops and invoke it from
core init and resume paths.

No functional change for existing platforms.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
---
 drivers/media/platform/qcom/iris/iris_core.c       | 4 ++++
 drivers/media/platform/qcom/iris/iris_hfi_common.c | 4 ++++
 drivers/media/platform/qcom/iris/iris_vpu_common.h | 1 +
 3 files changed, 9 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_core.c b/drivers/media/platform/qcom/iris/iris_core.c
index 52bf56e517f9..bd22076f3557 100644
--- a/drivers/media/platform/qcom/iris/iris_core.c
+++ b/drivers/media/platform/qcom/iris/iris_core.c
@@ -45,6 +45,7 @@ static int iris_wait_for_system_response(struct iris_core *core)
 
 int iris_core_init(struct iris_core *core)
 {
+	const struct vpu_ops *vpu_ops = core->iris_platform_data->vpu_ops;
 	int ret;
 
 	mutex_lock(&core->lock);
@@ -78,6 +79,9 @@ int iris_core_init(struct iris_core *core)
 	if (ret)
 		goto error_unload_fw;
 
+	if (vpu_ops->disable_arp)
+		vpu_ops->disable_arp(core);
+
 	core->iris_firmware_data->init_hfi_ops(core);
 
 	ret = iris_hfi_core_init(core);
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_common.c b/drivers/media/platform/qcom/iris/iris_hfi_common.c
index 8769ec61f117..8f04f3793d9a 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_common.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_common.c
@@ -144,6 +144,7 @@ int iris_hfi_pm_suspend(struct iris_core *core)
 
 int iris_hfi_pm_resume(struct iris_core *core)
 {
+	const struct vpu_ops *vpu_ops = core->iris_platform_data->vpu_ops;
 	const struct iris_hfi_sys_ops *ops = core->hfi_sys_ops;
 	int ret;
 
@@ -163,6 +164,9 @@ int iris_hfi_pm_resume(struct iris_core *core)
 	if (ret)
 		goto err_suspend_hw;
 
+	if (vpu_ops->disable_arp)
+		vpu_ops->disable_arp(core);
+
 	ret = ops->sys_interframe_powercollapse(core);
 	if (ret)
 		goto err_suspend_hw;
diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.h b/drivers/media/platform/qcom/iris/iris_vpu_common.h
index 9151545065cd..71d96921ed37 100644
--- a/drivers/media/platform/qcom/iris/iris_vpu_common.h
+++ b/drivers/media/platform/qcom/iris/iris_vpu_common.h
@@ -24,6 +24,7 @@ struct vpu_ops {
 	int (*set_hwmode)(struct iris_core *core);
 	void (*set_preset_registers)(struct iris_core *core);
 	void (*interrupt_init)(struct iris_core *core);
+	void (*disable_arp)(struct iris_core *core);
 };
 
 int iris_vpu_boot_firmware(struct iris_core *core);

-- 
2.47.3