This patch adds to the ISP CCDC driver the ability to deinterlace video
data when configured in interlaced mode and send progressive frames to
user-space V4L2 applications.
Signed-off-by: Javier Martinez Canillas <martinez.jav...@gmail.com>
---
drivers/media/video/omap3isp/ispccdc.c | 104 ++++++++++++++++++++++++++------
1 files changed, 85 insertions(+), 19 deletions(-)
diff --git a/drivers/media/video/omap3isp/ispccdc.c
b/drivers/media/video/omap3isp/ispccdc.c
index c25db54..7907081 100644
--- a/drivers/media/video/omap3isp/ispccdc.c
+++ b/drivers/media/video/omap3isp/ispccdc.c
@@ -40,6 +40,8 @@
static struct v4l2_mbus_framefmt *
__ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
unsigned int pad, enum v4l2_subdev_format_whence which);
+static bool ccdc_input_is_bt656(struct isp_ccdc_device *ccdc);
+static bool ccdc_input_is_fldmode(struct isp_ccdc_device *ccdc);
static const unsigned int ccdc_fmts[] = {
V4L2_MBUS_FMT_Y8_1X8,
@@ -889,12 +891,6 @@ static void ccdc_config_outlineoffset(struct
isp_ccdc_device *ccdc,
isp_reg_writel(isp, offset & 0xffff,
OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF);
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
- ISPCCDC_SDOFST_FINV);
-
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
- ISPCCDC_SDOFST_FOFST_4L);
-
switch (oddeven) {
case EVENEVEN:
isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
@@ -1010,6 +1006,9 @@ static void ccdc_config_sync_if(struct isp_ccdc_device
*ccdc,
if (pdata && pdata->vs_pol)
syn_mode |= ISPCCDC_SYN_MODE_VDPOL;
+ if (pdata && pdata->fldmode)
+ syn_mode |= ISPCCDC_SYN_MODE_FLDMODE;
+
isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
if (format->code == V4L2_MBUS_FMT_UYVY8_2X8)
@@ -1115,6 +1114,10 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
unsigned int shift;
u32 syn_mode;
u32 ccdc_pattern;
+ u32 nph;
+ u32 nlv;
+ u32 vd0;
+ u32 vd1;
pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
sensor = media_entity_to_v4l2_subdev(pad->entity);
@@ -1185,26 +1188,49 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
}
ccdc_config_imgattr(ccdc, ccdc_pattern);
+ /* In BT.656 a pixel is representd using two bytes */
+ if (pdata->bt656)
+ nph = format->width * 2 - 1;
+ else
+ nph = format->width - 1;
+
+ /* In interlaced mode a frame is composed fo two subrames */
+ if (pdata->fldmode) {
+ vd0 = nlv = format->height / 2 - 1;
+ vd1 = format->height / 3;
+ } else {
+ vd0 = nlv = format->height - 2;
+ vd1 = format->height * 2 / 3;
+ }
+
/* Generate VD0 on the last line of the image and VD1 on the
* 2/3 height line.
*/
- isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) |
- ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT),
+ isp_reg_writel(isp, (vd0 << ISPCCDC_VDINT_0_SHIFT) |
+ (vd1 << ISPCCDC_VDINT_1_SHIFT),
OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT);
/* CCDC_PAD_SOURCE_OF */
format = &ccdc->formats[CCDC_PAD_SOURCE_OF];
isp_reg_writel(isp, (0 << ISPCCDC_HORZ_INFO_SPH_SHIFT) |
- ((format->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT),
+ (nph << ISPCCDC_HORZ_INFO_NPH_SHIFT),
OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO);
isp_reg_writel(isp, 0 << ISPCCDC_VERT_START_SLV0_SHIFT,
OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START);
- isp_reg_writel(isp, (format->height - 1)
- << ISPCCDC_VERT_LINES_NLV_SHIFT,
+ isp_reg_writel(isp, nlv << ISPCCDC_VERT_LINES_NLV_SHIFT,
OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES);
+ isp_reg_writel(isp, 0 << ISPCCDC_VERT_START_SLV1_SHIFT,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START);
- ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0);
+
+ if (pdata->fldmode) {
+ ccdc_config_outlineoffset(ccdc, nph, EVENEVEN, 1);
+ ccdc_config_outlineoffset(ccdc, nph, EVENODD, 1);
+ ccdc_config_outlineoffset(ccdc, nph, ODDEVEN, 1);
+ ccdc_config_outlineoffset(ccdc, nph, ODDODD, 1);
+ } else
+ ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0,
0);
/* CCDC_PAD_SOURCE_VP */
format = &ccdc->formats[CCDC_PAD_SOURCE_VP];
@@ -1495,10 +1521,30 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
goto done;
}
- buffer = omap3isp_video_buffer_next(&ccdc->video_out, ccdc->error);
- if (buffer != NULL) {
- ccdc_set_outaddr(ccdc, buffer->isp_addr);
- restart = 1;
+ /* In interlaced mode a frame is composed of two subframes so we don't
have
+ * to change the CCDC output memory on every end of frame.
+ */
+ if (!ccdc_input_is_fldmode(ccdc)) {
+ if (!ccdc->interlaced_cnt) {
+ ccdc->interlaced_cnt = 1;
+ restart = 1;
+ } else {
+ ccdc->interlaced_cnt = 0;
+ buffer = omap3isp_video_buffer_next(&ccdc->video_out,
+ ccdc->error);
+ if (buffer != NULL) {
+ ccdc_set_outaddr(ccdc, buffer->isp_addr);
+ restart = 1;
+ }
+ }
+ } else {
+ buffer = omap3isp_video_buffer_next(&ccdc->video_out,
+ ccdc->error);
+ if (buffer != NULL) {
+ ccdc_set_outaddr(ccdc, buffer->isp_addr);
+ restart = 1;
+ }
+
}
pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
@@ -1764,6 +1810,7 @@ static int ccdc_set_stream(struct v4l2_subdev *sd, int
enable)
omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC);
ccdc->underrun = 0;
+ ccdc->interlaced_cnt = 0;
break;
}
@@ -1781,9 +1828,9 @@ __ccdc_get_format(struct isp_ccdc_device *ccdc, struct
v4l2_subdev_fh *fh,
return &ccdc->formats[pad];
}
-static bool ccdc_input_is_bt656(struct isp_ccdc_device *ccdc)
+struct isp_parallel_platform_data *ccdc_get_pdata(struct isp_ccdc_device *ccdc)
{
- const struct isp_parallel_platform_data *pdata = NULL;
+ struct isp_parallel_platform_data *pdata = NULL;
const struct v4l2_subdev *sensor;
const struct media_pad *pad;
@@ -1793,7 +1840,26 @@ static bool ccdc_input_is_bt656(struct isp_ccdc_device
*ccdc)
pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
sensor = media_entity_to_v4l2_subdev(pad->entity);
pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv)
- ->bus.parallel;
+ ->bus.parallel;
+
+ return pdata;
+}
+
+static bool ccdc_input_is_fldmode(struct isp_ccdc_device *ccdc)
+
+{
+ const struct isp_parallel_platform_data *pdata = NULL;
+
+ pdata = ccdc_get_pdata(ccdc);
+
+ return pdata && pdata->bt656;
+}
+
+static bool ccdc_input_is_bt656(struct isp_ccdc_device *ccdc)
+{
+ const struct isp_parallel_platform_data *pdata = NULL;
+
+ pdata = ccdc_get_pdata(ccdc);
return pdata && pdata->bt656;
}
--
1.7.4.1
--
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