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[media] coda: add coda_write_base helper

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Add a helper function that writes a vb2_buffer's Y, Cb, and
Cr plane base addresses of into three consecutive registers.
This moves common code out of coda-bit.c.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Philipp Zabel 2014-09-29 09:53:44 -03:00 committed by Mauro Carvalho Chehab
parent 6da999d935
commit 856d7d9326
3 changed files with 40 additions and 54 deletions
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68
drivers/media/platform/coda/coda-bit.c
View File

@ -1036,9 +1036,9 @@ static int coda_prepare_encode(struct coda_ctx *ctx)
struct coda_dev *dev = ctx->dev;
int force_ipicture;
int quant_param = 0;
u32 picture_y, picture_cb, picture_cr;
u32 pic_stream_buffer_addr, pic_stream_buffer_size;
u32 dst_fourcc;
u32 reg;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
@ -1129,37 +1129,17 @@ static int coda_prepare_encode(struct coda_ctx *ctx)
coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
switch (q_data_src->fourcc) {
case V4L2_PIX_FMT_YVU420:
/* Switch Cb and Cr for YVU420 format */
picture_cr = picture_y + q_data_src->bytesperline *
q_data_src->height;
picture_cb = picture_cr + q_data_src->bytesperline / 2 *
q_data_src->height / 2;
break;
case V4L2_PIX_FMT_YUV420:
default:
picture_cb = picture_y + q_data_src->bytesperline *
q_data_src->height;
picture_cr = picture_cb + q_data_src->bytesperline / 2 *
q_data_src->height / 2;
break;
}
if (dev->devtype->product == CODA_960) {
coda_write(dev, 4/*FIXME: 0*/, CODA9_CMD_ENC_PIC_SRC_INDEX);
coda_write(dev, q_data_src->width, CODA9_CMD_ENC_PIC_SRC_STRIDE);
coda_write(dev, 0, CODA9_CMD_ENC_PIC_SUB_FRAME_SYNC);
coda_write(dev, picture_y, CODA9_CMD_ENC_PIC_SRC_ADDR_Y);
coda_write(dev, picture_cb, CODA9_CMD_ENC_PIC_SRC_ADDR_CB);
coda_write(dev, picture_cr, CODA9_CMD_ENC_PIC_SRC_ADDR_CR);
reg = CODA9_CMD_ENC_PIC_SRC_ADDR_Y;
} else {
coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
reg = CODA_CMD_ENC_PIC_SRC_ADDR_Y;
}
coda_write_base(ctx, q_data_src, src_buf, reg);
coda_write(dev, force_ipicture << 1 & 0x2,
CODA_CMD_ENC_PIC_OPTION);
@ -1501,20 +1481,11 @@ static int coda_prepare_decode(struct coda_ctx *ctx)
struct vb2_buffer *dst_buf;
struct coda_dev *dev = ctx->dev;
struct coda_q_data *q_data_dst;
u32 stridey, height;
u32 picture_y, picture_cb, picture_cr;
u32 reg_addr, reg_stride;
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (ctx->params.rot_mode & CODA_ROT_90) {
stridey = q_data_dst->height;
height = q_data_dst->width;
} else {
stridey = q_data_dst->width;
height = q_data_dst->height;
}
/* Try to copy source buffer contents into the bitstream ringbuffer */
mutex_lock(&ctx->bitstream_mutex);
coda_fill_bitstream(ctx);
@ -1545,17 +1516,6 @@ static int coda_prepare_decode(struct coda_ctx *ctx)
if (dev->devtype->product == CODA_960)
coda_set_gdi_regs(ctx);
/* Set rotator output */
picture_y = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
if (q_data_dst->fourcc == V4L2_PIX_FMT_YVU420) {
/* Switch Cr and Cb for YVU420 format */
picture_cr = picture_y + stridey * height;
picture_cb = picture_cr + stridey / 2 * height / 2;
} else {
picture_cb = picture_y + stridey * height;
picture_cr = picture_cb + stridey / 2 * height / 2;
}
if (dev->devtype->product == CODA_960) {
/*
* The CODA960 seems to have an internal list of buffers with
@ -1565,16 +1525,16 @@ static int coda_prepare_decode(struct coda_ctx *ctx)
*/
coda_write(dev, CODA_MAX_FRAMEBUFFERS + dst_buf->v4l2_buf.index,
CODA9_CMD_DEC_PIC_ROT_INDEX);
coda_write(dev, picture_y, CODA9_CMD_DEC_PIC_ROT_ADDR_Y);
coda_write(dev, picture_cb, CODA9_CMD_DEC_PIC_ROT_ADDR_CB);
coda_write(dev, picture_cr, CODA9_CMD_DEC_PIC_ROT_ADDR_CR);
coda_write(dev, stridey, CODA9_CMD_DEC_PIC_ROT_STRIDE);
reg_addr = CODA9_CMD_DEC_PIC_ROT_ADDR_Y;
reg_stride = CODA9_CMD_DEC_PIC_ROT_STRIDE;
} else {
coda_write(dev, picture_y, CODA_CMD_DEC_PIC_ROT_ADDR_Y);
coda_write(dev, picture_cb, CODA_CMD_DEC_PIC_ROT_ADDR_CB);
coda_write(dev, picture_cr, CODA_CMD_DEC_PIC_ROT_ADDR_CR);
coda_write(dev, stridey, CODA_CMD_DEC_PIC_ROT_STRIDE);
reg_addr = CODA_CMD_DEC_PIC_ROT_ADDR_Y;
reg_stride = CODA_CMD_DEC_PIC_ROT_STRIDE;
}
coda_write_base(ctx, q_data_dst, dst_buf, reg_addr);
coda_write(dev, q_data_dst->bytesperline, reg_stride);
coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode,
CODA_CMD_DEC_PIC_ROT_MODE);

24
drivers/media/platform/coda/coda-common.c
View File

@ -82,6 +82,30 @@ unsigned int coda_read(struct coda_dev *dev, u32 reg)
return data;
}
void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
struct vb2_buffer *buf, unsigned int reg_y)
{
u32 base_y = vb2_dma_contig_plane_dma_addr(buf, 0);
u32 base_cb, base_cr;
switch (q_data->fourcc) {
case V4L2_PIX_FMT_YVU420:
/* Switch Cb and Cr for YVU420 format */
base_cr = base_y + q_data->bytesperline * q_data->height;
base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
break;
case V4L2_PIX_FMT_YUV420:
default:
base_cb = base_y + q_data->bytesperline * q_data->height;
base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
break;
}
coda_write(ctx->dev, base_y, reg_y);
coda_write(ctx->dev, base_cb, reg_y + 4);
coda_write(ctx->dev, base_cr, reg_y + 8);
}
/*
* Array of all formats supported by any version of Coda:
*/

2
drivers/media/platform/coda/coda.h
View File

@ -232,6 +232,8 @@ extern int coda_debug;
void coda_write(struct coda_dev *dev, u32 data, u32 reg);
unsigned int coda_read(struct coda_dev *dev, u32 reg);
void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
struct vb2_buffer *buf, unsigned int reg_y);
int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
size_t size, const char *name, struct dentry *parent);