From 5827e4b14ee7882acc6d618c12ddf4966bbd780f Mon Sep 17 00:00:00 2001 From: Xia Jiang Date: Fri, 14 Aug 2020 09:11:38 +0200 Subject: [PATCH] media: platform: Improve power on and power off flow Call pm_runtime_get_sync() before starting a frame and then pm_runtime_put() after completing it. This can save power for the time between processing two frames. Reviewed-by: Tomasz Figa Signed-off-by: Xia Jiang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 27 ++++++------------------- 1 file changed, 6 insertions(+), 21 deletions(-) diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c index feac405..832175d4 100644 --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c @@ -710,23 +710,6 @@ static struct vb2_v4l2_buffer *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx, return v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); } -static int mtk_jpeg_start_streaming(struct vb2_queue *q, unsigned int count) -{ - struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q); - struct vb2_v4l2_buffer *vb; - int ret = 0; - - ret = pm_runtime_get_sync(ctx->jpeg->dev); - if (ret < 0) - goto err; - - return 0; -err: - while ((vb = mtk_jpeg_buf_remove(ctx, q->type))) - v4l2_m2m_buf_done(vb, VB2_BUF_STATE_QUEUED); - return ret; -} - static void mtk_jpeg_stop_streaming(struct vb2_queue *q) { struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q); @@ -751,8 +734,6 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q) while ((vb = mtk_jpeg_buf_remove(ctx, q->type))) v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR); - - pm_runtime_put_sync(ctx->jpeg->dev); } static const struct vb2_ops mtk_jpeg_qops = { @@ -761,7 +742,6 @@ static const struct vb2_ops mtk_jpeg_qops = { .buf_queue = mtk_jpeg_buf_queue, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, - .start_streaming = mtk_jpeg_start_streaming, .stop_streaming = mtk_jpeg_stop_streaming, }; @@ -812,7 +792,7 @@ static void mtk_jpeg_device_run(void *priv) struct mtk_jpeg_src_buf *jpeg_src_buf; struct mtk_jpeg_bs bs; struct mtk_jpeg_fb fb; - int i; + int i, ret; src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); @@ -832,6 +812,10 @@ static void mtk_jpeg_device_run(void *priv) return; } + ret = pm_runtime_get_sync(jpeg->dev); + if (ret < 0) + goto dec_end; + mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs); if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, &dst_buf->vb2_buf, &fb)) goto dec_end; @@ -957,6 +941,7 @@ dec_end: v4l2_m2m_buf_done(src_buf, buf_state); v4l2_m2m_buf_done(dst_buf, buf_state); v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx); + pm_runtime_put(ctx->jpeg->dev); return IRQ_HANDLED; } -- 2.7.4