media: mtk-vcodec: venc: specify bitrate range per-chip

Different chips have different supported bitrate ranges. Move the min
and max supported bitrates to the platform data.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Acked-by: Tiffany Lin <tiffany.lin@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h

@@ -311,12 +311,16 @@ enum mtk_chip {
  *
  * @uses_ext: whether the encoder uses the extended firmware messaging format
  * @has_lt_irq: whether the encoder uses the LT irq
+ * @min_birate: minimum supported encoding bitrate
+ * @max_bitrate: maximum supported encoding bitrate
  */
 struct mtk_vcodec_enc_pdata {
 	enum mtk_chip chip;
 
 	bool uses_ext;
 	bool has_lt_irq;
+	unsigned long min_bitrate;
+	unsigned long max_bitrate;
 };
 
 #define MTK_ENC_CTX_IS_EXT(ctx) ((ctx)->dev->venc_pdata->uses_ext)

drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c

@@ -1232,7 +1232,8 @@ int mtk_vcodec_enc_ctrls_setup(struct mtk_vcodec_ctx *ctx)
 	v4l2_ctrl_handler_init(handler, MTK_MAX_CTRLS_HINT);
 
 	v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_BITRATE,
-			1, 4000000, 1, 4000000);
+			  ctx->dev->venc_pdata->min_bitrate,
+			  ctx->dev->venc_pdata->max_bitrate, 1, 4000000);
 	v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_B_FRAMES,
 			0, 2, 1, 0);
 	v4l2_ctrl_new_std(handler, ops, V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE,

drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c

@@ -395,6 +395,8 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 static const struct mtk_vcodec_enc_pdata mt8173_pdata = {
 	.chip = MTK_MT8173,
 	.has_lt_irq = true,
+	.min_bitrate = 1,
+	.max_bitrate = 4000000,
 };
 
 static const struct of_device_id mtk_vcodec_enc_match[] = {