From b88ff59e7996974dec7975a7beba1418b48bcabf Mon Sep 17 00:00:00 2001 From: Hugues Fruchet <hugues.fruchet@st.com> Date: Mon, 24 Sep 2018 08:54:59 -0400 Subject: [PATCH] media: stm32-dcmi: only enable IT frame on JPEG capture Only enable IT frame on JPEG capture, this saves some CPU interruptions and processing on all the other cases. Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> --- drivers/media/platform/stm32/stm32-dcmi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index ba3e2eee1d92a..d6b00eda6b9bd 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -659,7 +659,10 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) } /* Enable interruptions */ - reg_set(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); + if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG) + reg_set(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); + else + reg_set(dcmi->regs, DCMI_IER, IT_OVR | IT_ERR); return 0; -- 2.30.2