linux-kernel - [PATCH v2 1/3] media: iris: Add support for HFI_PROP_OPB

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Message-Id: <20251008-video-iris-ubwc-enable-v2-1-478ba2d96427@oss.qualcomm.com>
Date: Wed, 08 Oct 2025 15:22:25 +0530
From: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
To: Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
Subject: [PATCH v2 1/3] media: iris: Add support for HFI_PROP_OPB_ENABLE to
 control split mode

Add handling for the HFI_PROP_OPB_ENABLE property, which allows enabling
or disabling split mode in the firmware. When HFI_PROP_OPB_ENABLE is set
to true, the firmware activates split mode for output picture buffers
(OPB). The OPB format is determined by the HFI_PROP_COLOR_FORMAT
property, supporting NV12 or QC08C formats.

Signed-off-by: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
---
 drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c | 15 +++++++++++++++
 drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h |  1 +
 drivers/media/platform/qcom/iris/iris_platform_gen2.c    |  1 +
 3 files changed, 17 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c b/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c
index 4ce71a14250832440099e4cf3835b4aedfb749e8..56ced61de924eff3388c7df096f8235136bf473d 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c
@@ -422,6 +422,20 @@ static int iris_hfi_gen2_set_level(struct iris_inst *inst, u32 plane)
 						  sizeof(u32));
 }
 
+static int iris_hfi_gen2_set_opb_enable(struct iris_inst *inst, u32 plane)
+{
+	u32 port = iris_hfi_gen2_get_port(inst, plane);
+	u32 opb_enable = iris_split_mode_enabled(inst);
+
+	return iris_hfi_gen2_session_set_property(inst,
+						  HFI_PROP_OPB_ENABLE,
+						  HFI_HOST_FLAGS_NONE,
+						  port,
+						  HFI_PAYLOAD_U32,
+						  &opb_enable,
+						  sizeof(u32));
+}
+
 static int iris_hfi_gen2_set_colorformat(struct iris_inst *inst, u32 plane)
 {
 	u32 port = iris_hfi_gen2_get_port(inst, plane);
@@ -527,6 +541,7 @@ static int iris_hfi_gen2_session_set_config_params(struct iris_inst *inst, u32 p
 		{HFI_PROP_SIGNAL_COLOR_INFO,          iris_hfi_gen2_set_colorspace             },
 		{HFI_PROP_PROFILE,                    iris_hfi_gen2_set_profile                },
 		{HFI_PROP_LEVEL,                      iris_hfi_gen2_set_level                  },
+		{HFI_PROP_OPB_ENABLE,                 iris_hfi_gen2_set_opb_enable             },
 		{HFI_PROP_COLOR_FORMAT,               iris_hfi_gen2_set_colorformat            },
 		{HFI_PROP_LINEAR_STRIDE_SCANLINE,     iris_hfi_gen2_set_linear_stride_scanline },
 		{HFI_PROP_TIER,                       iris_hfi_gen2_set_tier                   },
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 aa1f795f5626c1f76a32dd650302633877ce67be..1b6a4dbac828ffea53c1be0d3624a033c283c972 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_defines.h
@@ -91,6 +91,7 @@ enum hfi_seq_header_mode {
 #define HFI_PROP_BUFFER_MARK			0x0300016c
 #define HFI_PROP_RAW_RESOLUTION		0x03000178
 #define HFI_PROP_TOTAL_PEAK_BITRATE		0x0300017C
+#define HFI_PROP_OPB_ENABLE			0x03000184
 #define HFI_PROP_COMV_BUFFER_COUNT		0x03000193
 #define HFI_PROP_END				0x03FFFFFF
 
diff --git a/drivers/media/platform/qcom/iris/iris_platform_gen2.c b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
index 36d69cc73986b74534a2912524c8553970fd862e..69c952c68e939f305f25511e2e4763487ec8e0de 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_gen2.c
+++ b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
@@ -691,6 +691,7 @@ static const u32 sm8550_venc_input_config_params[] = {
 };
 
 static const u32 sm8550_vdec_output_config_params[] = {
+	HFI_PROP_OPB_ENABLE,
 	HFI_PROP_COLOR_FORMAT,
 	HFI_PROP_LINEAR_STRIDE_SCANLINE,
 };

-- 
2.34.1