[PATCH 3/3] media: coda: jpeg: explicitly disable thumbnails in SEQ_INIT

[Philipp Zabel]

Explicitly clear DEC_SEQ_JPG_THUMB_EN during sequence initialization.
Not clearing the register does not cause problems, since the only other
codec (MPEG-4 decode) that writes to this register happens to always
write 0 as well.

Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
 drivers/media/platform/coda/coda-bit.c  | 2 ++
 drivers/media/platform/coda/coda_regs.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/media/platform/coda/coda-bit.c 
b/drivers/media/platform/coda/coda-bit.c
index b4ff89200869..5d575da3efad 100644
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -1695,6 +1695,8 @@ static int __coda_start_decoding(struct coda_ctx *ctx)
                        coda_write(dev, 512, CODA_CMD_DEC_SEQ_SPP_CHUNK_SIZE);
                }
        }
+       if (src_fourcc == V4L2_PIX_FMT_JPEG)
+               coda_write(dev, 0, CODA_CMD_DEC_SEQ_JPG_THUMB_EN);
        if (dev->devtype->product != CODA_960)
                coda_write(dev, 0, CODA_CMD_DEC_SEQ_SRC_SIZE);
 
diff --git a/drivers/media/platform/coda/coda_regs.h 
b/drivers/media/platform/coda/coda_regs.h
index 3b650b8aabe9..5e7b00a97671 100644
--- a/drivers/media/platform/coda/coda_regs.h
+++ b/drivers/media/platform/coda/coda_regs.h
@@ -157,6 +157,7 @@
 #define CODA_CMD_DEC_SEQ_START_BYTE            0x190
 #define CODA_CMD_DEC_SEQ_PS_BB_START           0x194
 #define CODA_CMD_DEC_SEQ_PS_BB_SIZE            0x198
+#define CODA_CMD_DEC_SEQ_JPG_THUMB_EN          0x19c
 #define CODA_CMD_DEC_SEQ_MP4_ASP_CLASS         0x19c
 #define                CODA_MP4_CLASS_MPEG4                    0
 #define CODA_CMD_DEC_SEQ_X264_MV_EN            0x19c
-- 
2.17.1