[PATCH v6 3/5] media: iris: Add ROI delta QP control support for HFI Gen2 encoders

[Deepa Guthyappa Madivalara <deepa.madivalara@oss.qualcomm.com>]

Add ROI support to the Iris encoder driver for HFI Gen2 based targets.

- Add control infrastructure, ROI_PARAMS and MB_SIZE capability IDs to
  platform_inst_fw_cap_type. Extend struct platform_inst_fw_cap with
  p_array and elems fields to hold a pointer to the per-frame
  delta QP array and its element count, set during s_ctrl.
- Register V4L2_CID_MPEG_VIDEO_ROI_MB_DELTA_QP as a dynamic S8
  array control (max dims = 139264 entries, supporting resolution of
  8192x4352 at 16x16 MB granularity).
  Register V4L2_CID_MPEG_VIDEO_ROI_MB_SIZE as a read-only U8
  control; g_volatile_ctrl returns 32 for HEVC and 16 for H.264.
- Define HFI_PROP_ROI_INFO and hook ROI_PARAMS to iris_set_roi_params().

Signed-off-by: Deepa Guthyappa Madivalara <deepa.madivalara@oss.qualcomm.com>
---
 drivers/media/platform/qcom/iris/iris_ctrls.c      | 70 +++++++++++++++++++++-
 drivers/media/platform/qcom/iris/iris_hfi_gen2.c   | 13 ++++
 .../platform/qcom/iris/iris_hfi_gen2_defines.h     |  1 +
 .../platform/qcom/iris/iris_platform_common.h      |  5 ++
 4 files changed, 88 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/iris/iris_ctrls.c b/drivers/media/platform/qcom/iris/iris_ctrls.c
index bf17d310eac081ffd3a4ad4842c2255ad798d4d8..9f84d28d00ab25555f1d2259f7ef0ed0786a0271 100644
--- a/drivers/media/platform/qcom/iris/iris_ctrls.c
+++ b/drivers/media/platform/qcom/iris/iris_ctrls.c
@@ -156,6 +156,10 @@ static enum platform_inst_fw_cap_type iris_get_cap_id(u32 id)
 		return LAYER5_BITRATE_HEVC;
 	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
 		return REQUEST_SYNC_FRAME;
+	case V4L2_CID_MPEG_VIDEO_ROI_MB_DELTA_QP:
+		return ROI_PARAMS;
+	case V4L2_CID_MPEG_VIDEO_ROI_MB_SIZE:
+		return MB_SIZE;
 	default:
 		return INST_FW_CAP_MAX;
 	}
@@ -301,6 +305,10 @@ static u32 iris_get_v4l2_id(enum platform_inst_fw_cap_type cap_id)
 		return V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR;
 	case REQUEST_SYNC_FRAME:
 		return V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME;
+	case ROI_PARAMS:
+		return V4L2_CID_MPEG_VIDEO_ROI_MB_DELTA_QP;
+	case MB_SIZE:
+		return V4L2_CID_MPEG_VIDEO_ROI_MB_SIZE;
 	default:
 		return 0;
 	}
@@ -327,6 +335,14 @@ static int iris_op_s_ctrl(struct v4l2_ctrl *ctrl)
 
 	inst->fw_caps[cap_id].value = ctrl->val;
 
+	if (inst->fw_caps[cap_id].flags & CAP_FLAG_CUSTOM) {
+		if (cap_id == ROI_PARAMS) {
+			inst->fw_caps[cap_id].p_array =
+				(const void *)ctrl->p_new.p;
+			inst->fw_caps[cap_id].elems = ctrl->new_elems;
+		}
+	}
+
 	if (vb2_is_streaming(q)) {
 		if (cap[cap_id].set)
 			cap[cap_id].set(inst, cap_id);
@@ -335,8 +351,53 @@ static int iris_op_s_ctrl(struct v4l2_ctrl *ctrl)
 	return 0;
 }
 
+static int iris_get_roi_mb_size(struct iris_inst *inst)
+{
+	return inst->codec == V4L2_PIX_FMT_HEVC ? 32 : 16;
+}
+
+static int iris_op_g_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct iris_inst *inst = container_of(ctrl->handler, struct iris_inst, ctrl_handler);
+	enum platform_inst_fw_cap_type cap_id;
+
+	cap_id = iris_get_cap_id(ctrl->id);
+	if (!iris_valid_cap_id(cap_id))
+		return -EINVAL;
+
+	if (cap_id == MB_SIZE)
+		ctrl->val = iris_get_roi_mb_size(inst);
+
+	return 0;
+}
+
 static const struct v4l2_ctrl_ops iris_ctrl_ops = {
 	.s_ctrl = iris_op_s_ctrl,
+	.g_volatile_ctrl = iris_op_g_ctrl,
+};
+
+static const struct v4l2_ctrl_config roi_mbqp_cfg = {
+	.ops = &iris_ctrl_ops,
+	.id = V4L2_CID_MPEG_VIDEO_ROI_MB_DELTA_QP,
+	.name = "Enc Mb ROI Delta QP",
+	.type = V4L2_CTRL_TYPE_S8,
+	.dims = {139264}, /* Max MBPF = 8192 * 4352 / 256 */
+	.min = -31,
+	.max = 30,
+	.def = 0,
+	.step = 1,
+	.flags = V4L2_CTRL_FLAG_DYNAMIC_ARRAY,
+};
+
+static const struct v4l2_ctrl_config roi_mbqp_size = {
+	.ops = &iris_ctrl_ops,
+	.id = V4L2_CID_MPEG_VIDEO_ROI_MB_SIZE,
+	.name = "ROI Mb size",
+	.type = V4L2_CTRL_TYPE_U8,
+	.min = 16,
+	.max = 32,
+	.def = 16,
+	.step = 1,
 };
 
 int iris_ctrls_init(struct iris_inst *inst)
@@ -361,7 +422,7 @@ int iris_ctrls_init(struct iris_inst *inst)
 		return ret;
 
 	for (idx = 1; idx < INST_FW_CAP_MAX; idx++) {
-		struct v4l2_ctrl *ctrl;
+		struct v4l2_ctrl *ctrl = NULL;
 
 		v4l2_id = iris_get_v4l2_id(cap[idx].cap_id);
 		if (!v4l2_id)
@@ -379,6 +440,13 @@ int iris_ctrls_init(struct iris_inst *inst)
 						      cap[idx].max,
 						      ~(cap[idx].step_or_mask),
 						      cap[idx].value);
+		} else if (cap[idx].flags & CAP_FLAG_CUSTOM) {
+			if (cap[idx].cap_id == ROI_PARAMS)
+				ctrl = v4l2_ctrl_new_custom(&inst->ctrl_handler,
+							    &roi_mbqp_cfg, NULL);
+			if (cap[idx].cap_id == MB_SIZE)
+				ctrl = v4l2_ctrl_new_custom(&inst->ctrl_handler,
+							    &roi_mbqp_size, NULL);
 		} else {
 			ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler,
 						 &iris_ctrl_ops,
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2.c b/drivers/media/platform/qcom/iris/iris_hfi_gen2.c
index 3b8fbefb8b93576962abd3850215f7b7fb364930..d628bc6748438b19dac01cd11cb9f8da0b8500af 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen2.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2.c
@@ -1782,6 +1782,19 @@ static const struct platform_inst_fw_cap inst_fw_cap_sm8550_enc[] = {
 		.flags = CAP_FLAG_INPUT_PORT | CAP_FLAG_DYNAMIC_ALLOWED,
 		.set = iris_set_req_sync_frame,
 	},
+	{
+		.cap_id = ROI_PARAMS,
+		.step_or_mask = 1,
+		.p_array = NULL,
+		.hfi_id = HFI_PROP_ROI_INFO,
+		.flags = CAP_FLAG_INPUT_PORT | CAP_FLAG_CUSTOM |
+			 CAP_FLAG_DYNAMIC_ALLOWED,
+	},
+	{
+		.cap_id = MB_SIZE,
+		.step_or_mask = 1,
+		.flags = CAP_FLAG_OUTPUT_PORT | CAP_FLAG_CUSTOM,
+	},
 };
 
 static const u32 sm8550_vdec_input_config_params_default[] = {
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h b/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h
index f43aea10090d8f1d6ae5c20547e5f6321b2ca203..08fc1036013de29e51747a6425ae7bb805ca3e0f 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h
@@ -133,6 +133,7 @@ enum hfi_flip {
 #define HFI_PROP_DEC_START_FROM_RAP_FRAME	0x03000169
 #define HFI_PROP_NO_OUTPUT			0x0300016a
 #define HFI_PROP_BUFFER_MARK			0x0300016c
+#define HFI_PROP_ROI_INFO			0x03000173
 #define HFI_PROP_WORST_COMPRESSION_RATIO	0x03000174
 #define HFI_PROP_WORST_COMPLEXITY_FACTOR	0x03000175
 #define HFI_PROP_RAW_RESOLUTION		0x03000178
diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
index 9748095091461ba13443c63955a42906fa4f050c..9910eb5514b3ae0a6b5349adb071d0a56375102c 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_common.h
+++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
@@ -186,6 +186,8 @@ enum platform_inst_fw_cap_type {
 	LAYER5_BITRATE_HEVC,
 	REQUEST_SYNC_FRAME,
 	TIME_DELTA_BASED_RC,
+	ROI_PARAMS,
+	MB_SIZE,
 	INST_FW_CAP_MAX,
 };
 
@@ -197,6 +199,7 @@ enum platform_inst_fw_cap_flags {
 	CAP_FLAG_CLIENT_SET		= BIT(4),
 	CAP_FLAG_BITMASK		= BIT(5),
 	CAP_FLAG_VOLATILE		= BIT(6),
+	CAP_FLAG_CUSTOM			= BIT(7),
 };
 
 struct platform_inst_fw_cap {
@@ -206,6 +209,8 @@ struct platform_inst_fw_cap {
 	s64 step_or_mask;
 	s64 value;
 	u32 hfi_id;
+	const void *p_array;
+	u32 elems;
 	enum platform_inst_fw_cap_flags flags;
 	int (*set)(struct iris_inst *inst,
 		   enum platform_inst_fw_cap_type cap_id);

-- 
2.34.1