[PATCH v2, 1/4] media: mediatek: vcodec: Fix decoder v4l2 bus_info not correctly

[Yunfei Dong]

Fix v4l2 capability bus_info value with correct chip name according to compatible.

Signed-off-by: Yunfei Dong <yunfei.dong at mediatek.com>
---
changed with v1:
- change bus_info from "platform:mt%d" to "platform:mt%d-dec"
---
 .../platform/mediatek/vcodec/mtk_vcodec_dec.c | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
index 52e5d36aa912..4bdb5ae4a116 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
@@ -185,11 +185,32 @@ static int vidioc_vdec_dqbuf(struct file *file, void *priv,
 	return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 }
 
+static int mtk_vcodec_dec_get_chip_name(void *priv)
+{
+	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
+	struct device *dev = &ctx->dev->plat_dev->dev;
+
+	if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-vcodec-dec"))
+		return 8173;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8183-vcodec-dec"))
+		return 8183;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8192-vcodec-dec"))
+		return 8192;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8195-vcodec-dec"))
+		return 8195;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8186-vcodec-dec"))
+		return 8186;
+	else
+		return 8173;
+}
+
 static int vidioc_vdec_querycap(struct file *file, void *priv,
 				struct v4l2_capability *cap)
 {
+	int platform_name = mtk_vcodec_dec_get_chip_name(priv);
+
 	strscpy(cap->driver, MTK_VCODEC_DEC_NAME, sizeof(cap->driver));
-	strscpy(cap->bus_info, MTK_PLATFORM_STR, sizeof(cap->bus_info));
+	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:mt%d-dec", platform_name);
 	strscpy(cap->card, MTK_PLATFORM_STR, sizeof(cap->card));
 
 	return 0;
-- 
2.18.0