[RFC PATCH 02/11] media: iris: Add hooks to initialize and tear down context banks

[Vikash Garodia]

Add platform hooks to set up and tear down context bank devices.
Different Iris platforms may require different context bank setup, so
let platform data provide the required operations.

Co-developed-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
Signed-off-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
Signed-off-by: Vikash Garodia <vikash.garodia@xxxxxxxxxxxxxxxx>
---
 .../platform/qcom/iris/iris_platform_common.h      |  6 ++++++
 drivers/media/platform/qcom/iris/iris_probe.c      | 24 +++++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
index c9256f2323dc4521f9eacaeffb0fc08a180de3ff..0d738005fbc3bc0f675165aea0bcf09943441a5d 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_common.h
+++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
@@ -288,6 +288,11 @@ struct iris_firmware_desc {
 	const char *fwname;
 };
 
+struct iris_context_bank_ops {
+	int (*init)(struct iris_core *core);
+	void (*deinit)(struct iris_core *core);
+};
+
 struct iris_platform_data {
 	/*
 	 * XXX: replace with gen1 / gen2 pointers once we have platforms
@@ -295,6 +300,7 @@ struct iris_platform_data {
 	 */
 	const struct iris_firmware_desc *firmware_desc;
 
+	const struct iris_context_bank_ops *cb_ops;
 	const struct vpu_ops *vpu_ops;
 	const struct icc_info *icc_tbl;
 	unsigned int icc_tbl_size;
diff --git a/drivers/media/platform/qcom/iris/iris_probe.c b/drivers/media/platform/qcom/iris/iris_probe.c
index c2dcb50a27824d45d5fbc8b9e22591decbe2a23b..0bce4fb1786bc9371074cb72e082219ded4840e5 100644
--- a/drivers/media/platform/qcom/iris/iris_probe.c
+++ b/drivers/media/platform/qcom/iris/iris_probe.c
@@ -150,6 +150,20 @@ static int iris_init_resources(struct iris_core *core)
 	return iris_init_resets(core);
 }
 
+static int iris_init_cb_devs(struct iris_core *core)
+{
+	if (core->iris_platform_data->cb_ops)
+		return core->iris_platform_data->cb_ops->init(core);
+
+	return 0;
+}
+
+static void iris_deinit_cb_devs(struct iris_core *core)
+{
+	if (core->iris_platform_data->cb_ops)
+		core->iris_platform_data->cb_ops->deinit(core);
+}
+
 static int iris_register_video_device(struct iris_core *core, enum domain_type type)
 {
 	struct video_device *vdev;
@@ -207,6 +221,8 @@ static void iris_remove(struct platform_device *pdev)
 
 	v4l2_device_unregister(&core->v4l2_dev);
 
+	iris_deinit_cb_devs(core);
+
 	mutex_destroy(&core->lock);
 }
 
@@ -273,10 +289,14 @@ static int iris_probe(struct platform_device *pdev)
 
 	iris_session_init_caps(core);
 
-	ret = v4l2_device_register(dev, &core->v4l2_dev);
+	ret = iris_init_cb_devs(core);
 	if (ret)
 		return ret;
 
+	ret = v4l2_device_register(dev, &core->v4l2_dev);
+	if (ret)
+		goto err_cb_deinit;
+
 	ret = iris_register_video_device(core, DECODER);
 	if (ret)
 		goto err_v4l2_unreg;
@@ -310,6 +330,8 @@ static int iris_probe(struct platform_device *pdev)
 	video_unregister_device(core->vdev_dec);
 err_v4l2_unreg:
 	v4l2_device_unregister(&core->v4l2_dev);
+err_cb_deinit:
+	iris_deinit_cb_devs(core);
 
 	return ret;
 }

-- 
2.34.1