media: mediatek: vcodec: Get the chip name for each platform

Store the name of the chip in the context of the driver in order
to be able to choose the correct configuration values for the
different codecs.
Use a enum value instead of an integer to store a more descriptive name.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

3 files changed, 41 insertions, 23 deletions

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
index 91ed576d6821..ba742f0e391d 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
@@ -208,36 +208,14 @@ 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_dec_ctx *ctx = fh_to_dec_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 if (of_device_is_compatible(dev->of_node, "mediatek,mt8188-vcodec-dec"))
-		return 8188;
-	else
-		return 8173;
-}
-
 static int vidioc_vdec_querycap(struct file *file, void *priv,
 				struct v4l2_capability *cap)
 {
 	struct mtk_vcodec_dec_ctx *ctx = fh_to_dec_ctx(priv);
 	struct device *dev = &ctx->dev->plat_dev->dev;
-	int platform_name = mtk_vcodec_dec_get_chip_name(priv);
 
 	strscpy(cap->driver, dev->driver->name, sizeof(cap->driver));
-	snprintf(cap->card, sizeof(cap->card), "MT%d video decoder", platform_name);
+	snprintf(cap->card, sizeof(cap->card), "MT%d video decoder", ctx->dev->chip_name);
 
 	return 0;
 }
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c
index 0a89ce452ac3..f47c98faf068 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c
@@ -326,6 +326,26 @@ static const struct v4l2_file_operations mtk_vcodec_fops = {
 	.mmap		= v4l2_m2m_fop_mmap,
 };
 
+static void mtk_vcodec_dec_get_chip_name(struct mtk_vcodec_dec_dev *vdec_dev)
+{
+	struct device *dev = &vdec_dev->plat_dev->dev;
+
+	if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8173;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8183-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8183;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8192-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8192;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8195-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8195;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8186-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8186;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8188-vcodec-dec"))
+		vdec_dev->chip_name = MTK_VDEC_MT8188;
+	else
+		vdec_dev->chip_name = MTK_VDEC_INVAL;
+}
+
 static int mtk_vcodec_probe(struct platform_device *pdev)
 {
 	struct mtk_vcodec_dec_dev *dev;
@@ -341,6 +361,12 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&dev->ctx_list);
 	dev->plat_dev = pdev;
 
+	mtk_vcodec_dec_get_chip_name(dev);
+	if (dev->chip_name == MTK_VDEC_INVAL) {
+		dev_err(&pdev->dev, "Failed to get decoder chip name");
+		return -EINVAL;
+	}
+
 	dev->vdec_pdata = of_device_get_match_data(&pdev->dev);
 	if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
 				  &rproc_phandle)) {
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
index 7e36b2c69b7d..849b89dd205c 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
@@ -18,6 +18,16 @@
 #define IS_VDEC_LAT_ARCH(hw_arch) ((hw_arch) >= MTK_VDEC_LAT_SINGLE_CORE)
 #define IS_VDEC_INNER_RACING(capability) ((capability) & MTK_VCODEC_INNER_RACING)
 
+enum mtk_vcodec_dec_chip_name {
+	MTK_VDEC_INVAL = 0,
+	MTK_VDEC_MT8173 = 8173,
+	MTK_VDEC_MT8183 = 8183,
+	MTK_VDEC_MT8186 = 8186,
+	MTK_VDEC_MT8188 = 8188,
+	MTK_VDEC_MT8192 = 8192,
+	MTK_VDEC_MT8195 = 8195,
+};
+
 /*
  * enum mtk_vdec_format_types - Structure used to get supported
  *		  format types according to decoder capability
@@ -249,6 +259,8 @@ struct mtk_vcodec_dec_ctx {
  * @vdec_racing_info: record register value
  * @dec_racing_info_mutex: mutex lock used for inner racing mode
  * @dbgfs: debug log related information
+ *
+ * @chip_name: used to distinguish platforms and select the correct codec configuration values
  */
 struct mtk_vcodec_dec_dev {
 	struct v4l2_device v4l2_dev;
@@ -289,6 +301,8 @@ struct mtk_vcodec_dec_dev {
 	/* Protects access to vdec_racing_info data */
 	struct mutex dec_racing_info_mutex;
 	struct mtk_vcodec_dbgfs dbgfs;
+
+	enum mtk_vcodec_dec_chip_name chip_name;
 };
 
 static inline struct mtk_vcodec_dec_ctx *fh_to_dec_ctx(struct v4l2_fh *fh)