linux-kernel - [PATCH v2 09/24] media: iris: Send dummy buffer address for all codecs during drain

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Message-ID: <20250813-iris-video-encoder-v2-9-c725ff673078@quicinc.com>
Date: Wed, 13 Aug 2025 15:07:59 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: Vikash Garodia <quic_vgarodia@...cinc.com>,
        Abhinav Kumar
	<abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil
	<hverkuil@...all.nl>,
        Stefan Schmidt <stefan.schmidt@...aro.org>,
        "Vedang
 Nagar" <quic_vnagar@...cinc.com>
CC: <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Renjiang Han <quic_renjiang@...cinc.com>,
        Wangao Wang <quic_wangaow@...cinc.com>,
        Dikshita Agarwal
	<quic_dikshita@...cinc.com>
Subject: [PATCH v2 09/24] media: iris: Send dummy buffer address for all
 codecs during drain

Firmware can handle a dummy address for buffers with the EOS flag. To
ensure consistent behavior across all codecs, update the drain
command to always send a dummy buffer address.

This makes the drain handling uniform and avoids any codec specific
assumptions.

Fixes: 478c4478610d ("media: iris: Add codec specific check for VP9 decoder drain handling")
Reviewed-by: Vikash Garodia <quic_vgarodia@...cinc.com>
Tested-by: Vikash Garodia <quic_vgarodia@...cinc.com> # X1E80100
Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
---
 drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
index 5f1748ab80f88393215fc2d82c5c6b4af1266090..5097680ee14ebba3a126213c0584161627ca47d7 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
@@ -402,8 +402,7 @@ static int iris_hfi_gen1_session_drain(struct iris_inst *inst, u32 plane)
 	ip_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_EMPTY_BUFFER;
 	ip_pkt.shdr.session_id = inst->session_id;
 	ip_pkt.flags = HFI_BUFFERFLAG_EOS;
-	if (inst->codec == V4L2_PIX_FMT_VP9)
-		ip_pkt.packet_buffer = 0xdeadb000;
+	ip_pkt.packet_buffer = 0xdeadb000;
 
 	return iris_hfi_queue_cmd_write(inst->core, &ip_pkt, ip_pkt.shdr.hdr.size);
 }

-- 
2.34.1