MLK-19957-1: ISI: clean isi status before enable interrupt

Because ISI can't restore to default state after software
reset, the status value of exit will be maintained. If not
cleared, ISI will triggle fake interrupt after enableing irq,
but there is not ready for data.

Signed-off-by: Guoniu.Zhou <guoniu.zhou@nxp.com>
(cherry picked from commit 932af3df1745f5afb0b9433d3355b2e24b177f4e)

diff --git a/drivers/media/platform/imx8/mxc-isi-hw.h b/drivers/media/platform/imx8/mxc-isi-hw.h
index 53be9da..4537a97 100644 (file)
--- a/drivers/media/platform/imx8/mxc-isi-hw.h
+++ b/drivers/media/platform/imx8/mxc-isi-hw.h
@@ -495,6 +495,7 @@ void mxc_isi_m2m_start_read(struct mxc_isi_dev *mxc_isi);
 
 void mxc_isi_clean_irq_status(struct mxc_isi_dev *mxc_isi, u32 val);
 u32 mxc_isi_get_irq_status(struct mxc_isi_dev *mxc_isi);
+void mxc_isi_clean_registers(struct mxc_isi_dev *mxc_isi);
 void mxc_isi_enable_irq(struct mxc_isi_dev *mxc_isi);
 void mxc_isi_disable_irq(struct mxc_isi_dev *mxc_isi);
 void mxc_isi_channel_set_m2m_out_addr(struct mxc_isi_dev *mxc_isi,