mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-04 16:15:11 +00:00
Code Issues Releases Wiki Activity

media: sun8i-di: Fix coefficient writes

Browse source 
[ Upstream commit 794b581f8c ]

Currently coefficients are applied only once, since they don't change.
However, this is done before enable bit is set and thus it doesn't get
applied properly.

Fix that by applying coefficients after enable bit is set. While this
means that it will be done evey time, it doesn't bring much time
penalty.

Fixes: a4260ea495 ("media: sun4i: Add H3 deinterlace driver")
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jernej Skrabec 2023-12-16 14:34:20 +01:00 committed by Sasha Levin
parent 850249edb4
commit fdd9b1f4bb
1 changed files with 21 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

42
drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
View file

@ -66,6 +66,7 @@ static void deinterlace_device_run(void *priv)
struct vb2_v4l2_buffer *src, *dst;
unsigned int hstep, vstep;
dma_addr_t addr;
int i;
src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
@ -160,6 +161,26 @@ static void deinterlace_device_run(void *priv)
deinterlace_write(dev, DEINTERLACE_CH1_HORZ_FACT, hstep);
deinterlace_write(dev, DEINTERLACE_CH1_VERT_FACT, vstep);
/* neutral filter coefficients */
deinterlace_set_bits(dev, DEINTERLACE_FRM_CTRL,
DEINTERLACE_FRM_CTRL_COEF_ACCESS);
readl_poll_timeout(dev->base + DEINTERLACE_STATUS, val,
val & DEINTERLACE_STATUS_COEF_STATUS, 2, 40);
for (i = 0; i < 32; i++) {
deinterlace_write(dev, DEINTERLACE_CH0_HORZ_COEF0 + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH0_VERT_COEF + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH1_HORZ_COEF0 + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH1_VERT_COEF + i * 4,
DEINTERLACE_IDENTITY_COEF);
}
deinterlace_clr_set_bits(dev, DEINTERLACE_FRM_CTRL,
DEINTERLACE_FRM_CTRL_COEF_ACCESS, 0);
deinterlace_clr_set_bits(dev, DEINTERLACE_FIELD_CTRL,
DEINTERLACE_FIELD_CTRL_FIELD_CNT_MSK,
DEINTERLACE_FIELD_CTRL_FIELD_CNT(ctx->field));
@ -248,7 +269,6 @@ static irqreturn_t deinterlace_irq(int irq, void *data)
static void deinterlace_init(struct deinterlace_dev *dev)
{
u32 val;
int i;
deinterlace_write(dev, DEINTERLACE_BYPASS,
DEINTERLACE_BYPASS_CSC);
@ -285,26 +305,6 @@ static void deinterlace_init(struct deinterlace_dev *dev)
deinterlace_clr_set_bits(dev, DEINTERLACE_CHROMA_DIFF,
DEINTERLACE_CHROMA_DIFF_TH_MSK,
DEINTERLACE_CHROMA_DIFF_TH(5));
/* neutral filter coefficients */
deinterlace_set_bits(dev, DEINTERLACE_FRM_CTRL,
DEINTERLACE_FRM_CTRL_COEF_ACCESS);
readl_poll_timeout(dev->base + DEINTERLACE_STATUS, val,
val & DEINTERLACE_STATUS_COEF_STATUS, 2, 40);
for (i = 0; i < 32; i++) {
deinterlace_write(dev, DEINTERLACE_CH0_HORZ_COEF0 + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH0_VERT_COEF + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH1_HORZ_COEF0 + i * 4,
DEINTERLACE_IDENTITY_COEF);
deinterlace_write(dev, DEINTERLACE_CH1_VERT_COEF + i * 4,
DEINTERLACE_IDENTITY_COEF);
}
deinterlace_clr_set_bits(dev, DEINTERLACE_FRM_CTRL,
DEINTERLACE_FRM_CTRL_COEF_ACCESS, 0);
}
static inline struct deinterlace_ctx *deinterlace_file2ctx(struct file *file)