linux-kernel - [PATCH] media: venus : hfi: add venus image info into smem

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Message-Id: <1616564457-25221-1-git-send-email-dikshita@codeaurora.org>
Date:   Wed, 24 Mar 2021 11:10:57 +0530
From:   Dikshita Agarwal <dikshita@...eaurora.org>
To:     linux-media@...r.kernel.org, stanimir.varbanov@...aro.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        vgarodia@...eaurora.org, Dikshita Agarwal <dikshita@...eaurora.org>
Subject: [PATCH] media: venus : hfi: add venus image info into smem

fill fw version info into smem to be printed as part of
soc info.

Signed-off-by: Dikshita Agarwal <dikshita@...eaurora.org>
---
 drivers/media/platform/qcom/venus/hfi_msgs.c | 36 ++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c
index 06a1908..0e94921 100644
--- a/drivers/media/platform/qcom/venus/hfi_msgs.c
+++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
@@ -6,6 +6,7 @@
 #include <linux/hash.h>
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/soc/qcom/smem.h>
 #include <media/videobuf2-v4l2.h>
 
 #include "core.h"
@@ -14,6 +15,8 @@
 #include "hfi_msgs.h"
 #include "hfi_parser.h"
 
+#define SMEM_IMAGE_VERSION_TABLE 469
+
 static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
 			      struct hfi_msg_event_notify_pkt *pkt)
 {
@@ -239,15 +242,44 @@ static void
 sys_get_prop_image_version(struct device *dev,
 			   struct hfi_msg_sys_property_info_pkt *pkt)
 {
+	u32 i = 0;
+	size_t smem_block_size = 0;
+	u8 *smem_table_ptr;
+	char version[256];
+	const u32 version_string_size = 128;
+	const u32 smem_image_index_venus = 14 * 128;
+	u8 *str_image_version;
 	int req_bytes;
 
 	req_bytes = pkt->hdr.size - sizeof(*pkt);
 
-	if (req_bytes < 128 || !pkt->data[1] || pkt->num_properties > 1)
+	if (req_bytes < version_string_size || !pkt->data[1] || pkt->num_properties > 1)
 		/* bad packet */
 		return;
 
-	dev_dbg(dev, VDBGL "F/W version: %s\n", (u8 *)&pkt->data[1]);
+	str_image_version = (u8 *)&pkt->data[1];
+
+	/*
+	 * The version string returned by firmware includes null
+	 * characters at the start and in between. Replace the null
+	 * characters with space, to print the version info.
+	 */
+	for (i = 0; i < version_string_size; i++) {
+		if (str_image_version[i] != '\0')
+			version[i] = str_image_version[i];
+		else
+			version[i] = ' ';
+	}
+
+	version[i] = '\0';
+	dev_dbg(dev, VDBGL "F/W version: %s\n", version);
+
+	smem_table_ptr = qcom_smem_get(QCOM_SMEM_HOST_ANY,
+				       SMEM_IMAGE_VERSION_TABLE, &smem_block_size);
+	if ((smem_image_index_venus + version_string_size) <= smem_block_size &&
+	    smem_table_ptr)
+		memcpy(smem_table_ptr + smem_image_index_venus,
+		       str_image_version, version_string_size);
 }
 
 static void hfi_sys_property_info(struct venus_core *core,
-- 
2.7.4