[PATCH v8 24/28] media: iris: add check whether the video session is supported or not

[Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>]

From: Vedang Nagar <quic_vnagar@xxxxxxxxxxx>

Based on the hardware capabilities, add check to restrict whether the
video session is supported or not by the hardware during start_streaming
and queue_setup.

Signed-off-by: Vedang Nagar <quic_vnagar@xxxxxxxxxxx>
Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>
---
 .../platform/qcom/iris/iris_platform_common.h      |  1 +
 .../platform/qcom/iris/iris_platform_sm8550.c      |  1 +
 drivers/media/platform/qcom/iris/iris_vb2.c        | 96 ++++++++++++++++++++++
 3 files changed, 98 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
index de0388a100c3..a5a7d6838d16 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_common.h
+++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
@@ -144,6 +144,7 @@ struct iris_platform_data {
 	struct ubwc_config_data *ubwc_config;
 	u32 num_vpp_pipe;
 	u32 max_session_count;
+	u32 max_core_mbpf;
 	const u32 *input_config_params;
 	unsigned int input_config_params_size;
 	const u32 *output_config_params;
diff --git a/drivers/media/platform/qcom/iris/iris_platform_sm8550.c b/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
index 2a45e605e140..68907ba6986f 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
+++ b/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
@@ -232,6 +232,7 @@ struct iris_platform_data sm8550_data = {
 	.ubwc_config = &ubwc_config_sm8550,
 	.num_vpp_pipe = 4,
 	.max_session_count = 16,
+	.max_core_mbpf = ((8192 * 4352) / 256) * 2,
 	.input_config_params =
 		sm8550_vdec_input_config_params,
 	.input_config_params_size =
diff --git a/drivers/media/platform/qcom/iris/iris_vb2.c b/drivers/media/platform/qcom/iris/iris_vb2.c
index 59fc133c9f98..712d37723ec3 100644
--- a/drivers/media/platform/qcom/iris/iris_vb2.c
+++ b/drivers/media/platform/qcom/iris/iris_vb2.c
@@ -11,6 +11,94 @@
 #include "iris_vb2.h"
 #include "iris_vdec.h"
 
+static int iris_check_core_mbpf(struct iris_inst *inst)
+{
+	struct iris_core *core = inst->core;
+	struct iris_inst *instance;
+	u32 total_mbpf = 0;
+
+	mutex_lock(&core->lock);
+	list_for_each_entry(instance, &core->instances, list)
+		total_mbpf += iris_get_mbpf(instance);
+	mutex_unlock(&core->lock);
+
+	if (total_mbpf > core->iris_platform_data->max_core_mbpf)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int iris_check_inst_mbpf(struct iris_inst *inst)
+{
+	struct platform_inst_caps *caps;
+	u32 mbpf, max_mbpf;
+
+	caps = inst->core->iris_platform_data->inst_caps;
+	max_mbpf = caps->max_mbpf;
+	mbpf = iris_get_mbpf(inst);
+	if (mbpf > max_mbpf)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int iris_check_resolution_supported(struct iris_inst *inst)
+{
+	u32 width, height, min_width, min_height, max_width, max_height;
+	struct platform_inst_caps *caps;
+
+	caps = inst->core->iris_platform_data->inst_caps;
+	width = inst->fmt_src->fmt.pix_mp.width;
+	height = inst->fmt_src->fmt.pix_mp.height;
+
+	min_width = caps->min_frame_width;
+	max_width = caps->max_frame_width;
+	min_height = caps->min_frame_height;
+	max_height = caps->max_frame_height;
+
+	if (!(min_width <= width && width <= max_width) ||
+	    !(min_height <= height && height <= max_height))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int iris_check_session_supported(struct iris_inst *inst)
+{
+	struct iris_core *core = inst->core;
+	struct iris_inst *instance = NULL;
+	bool found = false;
+	int ret;
+
+	list_for_each_entry(instance, &core->instances, list) {
+		if (instance == inst)
+			found = true;
+	}
+
+	if (!found) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	ret = iris_check_core_mbpf(inst);
+	if (ret)
+		goto exit;
+
+	ret = iris_check_inst_mbpf(inst);
+	if (ret)
+		goto exit;
+
+	ret = iris_check_resolution_supported(inst);
+	if (ret)
+		goto exit;
+
+	return 0;
+exit:
+	dev_err(inst->core->dev, "current session not supported(%d)\n", ret);
+
+	return ret;
+}
+
 int iris_vb2_buf_init(struct vb2_buffer *vb2)
 {
 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb2);
@@ -48,6 +136,10 @@ int iris_vb2_queue_setup(struct vb2_queue *q,
 		goto unlock;
 	}
 
+	ret = iris_check_session_supported(inst);
+	if (ret)
+		goto unlock;
+
 	if (!inst->once_per_session_set) {
 		inst->once_per_session_set = true;
 
@@ -95,6 +187,10 @@ int iris_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
 		goto error;
 	}
 
+	ret = iris_check_session_supported(inst);
+	if (ret)
+		goto error;
+
 	if (V4L2_TYPE_IS_OUTPUT(q->type))
 		ret = iris_vdec_streamon_input(inst);
 	else if (V4L2_TYPE_IS_CAPTURE(q->type))

-- 
2.34.1