diff options
| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2017-08-08 07:27:05 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-20 08:01:28 -0400 |
| commit | 630dde63001dc62be7abcc54101a80209ad6ec38 (patch) | |
| tree | b2ec48355a351892edcf2dbe5b69fae6c1166a18 /drivers | |
| parent | e28e6f75667d68cd36f1ef312c3d988795fee331 (diff) | |
media: s5p-jpeg: disable encoder/decoder in exynos4-like hardware after use
Clearing the bits turns off the encoder/decoder. If the hardware
is not turned off after use, at subsequent uses it does not work
in a stable manner, resulting in incorrect interrupt status value
being read and e.g. erroneous read of compressed bitstream size.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 2 | ||||
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.h | 1 | ||||
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c | 5 |
3 files changed, 7 insertions, 1 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 663b79cb14b0..917c9629f6b2 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -2806,6 +2806,8 @@ static irqreturn_t exynos4_jpeg_irq(int irq, void *priv) if (jpeg->variant->version == SJPEG_EXYNOS4) curr_ctx->subsampling = exynos4_jpeg_get_frame_fmt(jpeg->regs); + exynos4_jpeg_set_enc_dec_mode(jpeg->regs, S5P_JPEG_DISABLE); + spin_unlock(&jpeg->slock); v4l2_m2m_job_finish(jpeg->m2m_dev, curr_ctx->fh.m2m_ctx); diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.h b/drivers/media/platform/s5p-jpeg/jpeg-core.h index 9aa26bd1d46d..a46465e10351 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.h +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.h @@ -63,6 +63,7 @@ #define S5P_JPEG_ENCODE 0 #define S5P_JPEG_DECODE 1 +#define S5P_JPEG_DISABLE -1 #define FMT_TYPE_OUTPUT 0 #define FMT_TYPE_CAPTURE 1 diff --git a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c index a1d823ab0c63..c78403368e5b 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c @@ -38,10 +38,13 @@ void exynos4_jpeg_set_enc_dec_mode(void __iomem *base, unsigned int mode) writel((reg & EXYNOS4_ENC_DEC_MODE_MASK) | EXYNOS4_DEC_MODE, base + EXYNOS4_JPEG_CNTL_REG); - } else {/* encode */ + } else if (mode == S5P_JPEG_ENCODE) {/* encode */ writel((reg & EXYNOS4_ENC_DEC_MODE_MASK) | EXYNOS4_ENC_MODE, base + EXYNOS4_JPEG_CNTL_REG); + } else { /* disable both */ + writel(reg & EXYNOS4_ENC_DEC_MODE_MASK, + base + EXYNOS4_JPEG_CNTL_REG); } } |