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Subject[PATCH v3 16/23] camss: vfe: Support for frame padding
Date
Add support for horizontal and vertical frame padding.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
---
drivers/media/platform/qcom/camss-8x16/camss-vfe.c | 86 +++++++++++++++++-----
.../media/platform/qcom/camss-8x16/camss-video.c | 69 ++++++++++++-----
.../media/platform/qcom/camss-8x16/camss-video.h | 2 +
3 files changed, 121 insertions(+), 36 deletions(-)

diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
index bef0209..327f158 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
@@ -279,21 +279,75 @@ static void vfe_wm_frame_based(struct vfe_device *vfe, u8 wm, u8 enable)
1 << VFE_0_BUS_IMAGE_MASTER_n_WR_CFG_FRM_BASED_SHIFT);
}

+#define CALC_WORD(width, M, N) (((width) * (M) + (N) - 1) / (N))
+
+static int vfe_word_per_line(uint32_t format, uint32_t pixel_per_line)
+{
+ int val = 0;
+
+ switch (format) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ val = CALC_WORD(pixel_per_line, 1, 8);
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_YVYU:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
+ val = CALC_WORD(pixel_per_line, 2, 8);
+ break;
+ }
+
+ return val;
+}
+
+static void vfe_get_wm_sizes(struct v4l2_pix_format_mplane *pix, u8 plane,
+ u16 *width, u16 *height, u16 *bytesperline)
+{
+ switch (pix->pixelformat) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ *width = pix->width;
+ *height = pix->height;
+ *bytesperline = pix->plane_fmt[0].bytesperline;
+ if (plane == 1)
+ *height /= 2;
+ break;
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ *width = pix->width;
+ *height = pix->height;
+ *bytesperline = pix->plane_fmt[0].bytesperline;
+ break;
+ }
+}
+
static void vfe_wm_line_based(struct vfe_device *vfe, u32 wm,
- u16 width, u16 height, u32 enable)
+ struct v4l2_pix_format_mplane *pix,
+ u8 plane, u32 enable)
{
u32 reg;

if (enable) {
+ u16 width = 0, height = 0, bytesperline = 0, wpl;
+
+ vfe_get_wm_sizes(pix, plane, &width, &height, &bytesperline);
+
+ wpl = vfe_word_per_line(pix->pixelformat, width);
+
reg = height - 1;
- reg |= (width / 16 - 1) << 16;
+ reg |= ((wpl + 1) / 2 - 1) << 16;

writel_relaxed(reg, vfe->base +
VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(wm));

+ wpl = vfe_word_per_line(pix->pixelformat, bytesperline);
+
reg = 0x3;
reg |= (height - 1) << 4;
- reg |= (width / 8) << 16;
+ reg |= wpl << 16;

writel_relaxed(reg, vfe->base +
VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(wm));
@@ -1198,25 +1252,14 @@ static int vfe_enable_output(struct vfe_line *line)
} else {
ub_size /= output->wm_num;
for (i = 0; i < output->wm_num; i++) {
- u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
-
vfe_set_cgc_override(vfe, output->wm_idx[i], 1);
vfe_wm_set_subsample(vfe, output->wm_idx[i]);
vfe_wm_set_ub_cfg(vfe, output->wm_idx[i],
(ub_size + 1) * output->wm_idx[i],
ub_size);
- if ((i == 1) && (p == V4L2_PIX_FMT_NV12 ||
- p == V4L2_PIX_FMT_NV21))
- vfe_wm_line_based(vfe, output->wm_idx[i],
- line->fmt[MSM_VFE_PAD_SRC].width,
- line->fmt[MSM_VFE_PAD_SRC].height / 2,
- 1);
- else
- vfe_wm_line_based(vfe, output->wm_idx[i],
- line->fmt[MSM_VFE_PAD_SRC].width,
- line->fmt[MSM_VFE_PAD_SRC].height,
- 1);
-
+ vfe_wm_line_based(vfe, output->wm_idx[i],
+ &line->video_out.active_fmt.fmt.pix_mp,
+ i, 1);
vfe_wm_enable(vfe, output->wm_idx[i], 1);
vfe_bus_reload_wm(vfe, output->wm_idx[i]);
}
@@ -1278,7 +1321,7 @@ static int vfe_disable_output(struct vfe_line *line)
spin_unlock_irqrestore(&vfe->output_lock, flags);
} else {
for (i = 0; i < output->wm_num; i++) {
- vfe_wm_line_based(vfe, output->wm_idx[i], 0, 0, 0);
+ vfe_wm_line_based(vfe, output->wm_idx[i], NULL, i, 0);
vfe_set_cgc_override(vfe, output->wm_idx[i], 0);
}

@@ -2363,9 +2406,14 @@ int msm_vfe_register_entities(struct vfe_device *vfe,
}

video_out->ops = &camss_vfe_video_ops;
+ video_out->bpl_alignment = 8;
+ video_out->line_based = 0;
video_out->fmt_tag = CAMSS_FMT_TAG_RDI;
- if (i == VFE_LINE_PIX)
+ if (i == VFE_LINE_PIX) {
+ video_out->bpl_alignment = 16;
+ video_out->line_based = 1;
video_out->fmt_tag = CAMSS_FMT_TAG_PIX;
+ }
snprintf(name, ARRAY_SIZE(name), "%s%d_%s%d",
MSM_VFE_NAME, vfe->id, "video", i);
ret = msm_video_register(video_out, v4l2_dev, name);
diff --git a/drivers/media/platform/qcom/camss-8x16/camss-video.c b/drivers/media/platform/qcom/camss-8x16/camss-video.c
index c5ebf5c..5a2bf18 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-video.c
+++ b/drivers/media/platform/qcom/camss-8x16/camss-video.c
@@ -194,13 +194,15 @@ static int video_find_format_n(u32 code, u32 index, enum camss_fmt_tag tag)
* @mbus: v4l2_mbus_framefmt format
* @pix: v4l2_pix_format_mplane format (output)
* @index: index of an entry in formats array to be used for the conversion
+ * @alignment: bytesperline alignment value
*
* Fill the output pix structure with information from the input mbus format.
*
* Return 0 on success or a negative error code otherwise
*/
static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
- struct v4l2_pix_format_mplane *pix, int index)
+ struct v4l2_pix_format_mplane *pix, int index,
+ unsigned int alignment)
{
const struct format_info *f;
unsigned int i;
@@ -214,7 +216,7 @@ static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
for (i = 0; i < pix->num_planes; i++) {
bytesperline = pix->width / f->hsub[i].numerator *
f->hsub[i].denominator * f->bpp[i] / 8;
- bytesperline = ALIGN(bytesperline, 8);
+ bytesperline = ALIGN(bytesperline, alignment);
pix->plane_fmt[i].bytesperline = bytesperline;
pix->plane_fmt[i].sizeimage = pix->height /
f->vsub[i].numerator * f->vsub[i].denominator *
@@ -267,7 +269,8 @@ static int video_get_subdev_format(struct camss_video *video,
if (ret < 0)
return ret;

- return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp, ret);
+ return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp, ret,
+ video->bpl_alignment);
}

static int video_get_pixelformat(struct camss_video *video, u32 *pixelformat,
@@ -395,7 +398,6 @@ static int video_check_format(struct camss_video *video)
struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
struct v4l2_pix_format_mplane *sd_pix;
struct v4l2_format format;
- unsigned int i;
int ret;

sd_pix = &format.fmt.pix_mp;
@@ -411,13 +413,6 @@ static int video_check_format(struct camss_video *video)
pix->field != format.fmt.pix_mp.field)
return -EINVAL;

- for (i = 0; i < pix->num_planes; i++)
- if (pix->plane_fmt[i].bytesperline !=
- sd_pix->plane_fmt[i].bytesperline ||
- pix->plane_fmt[i].sizeimage !=
- sd_pix->plane_fmt[i].sizeimage)
- return -EINVAL;
-
return 0;
}

@@ -542,28 +537,68 @@ static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
return 0;
}

-static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
+static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
struct camss_video *video = video_drvdata(file);
+ struct v4l2_plane_pix_format *p;
+ u32 bytesperline[3] = { 0 };
+ u32 sizeimage[3] = { 0 };
+ u32 lines;
int ret;
+ int i;

- if (vb2_is_busy(&video->vb2_q))
- return -EBUSY;
+ if (video->line_based)
+ for (i = 0; i < f->fmt.pix_mp.num_planes && i < 3; i++) {
+ p = &f->fmt.pix_mp.plane_fmt[i];
+ bytesperline[i] = clamp_t(u32, p->bytesperline,
+ 1, 65528);
+ sizeimage[i] = clamp_t(u32, p->sizeimage,
+ bytesperline[i],
+ bytesperline[i] * 4096);
+ }

ret = video_get_subdev_format(video, f);
if (ret < 0)
return ret;

- video->active_fmt = *f;
+ if (video->line_based)
+ for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
+ p = &f->fmt.pix_mp.plane_fmt[i];
+ p->bytesperline = clamp_t(u32, p->bytesperline,
+ 1, 65528);
+ p->sizeimage = clamp_t(u32, p->sizeimage,
+ p->bytesperline,
+ p->bytesperline * 4096);
+ lines = p->sizeimage / p->bytesperline;
+
+ if (p->bytesperline < bytesperline[i])
+ p->bytesperline = ALIGN(bytesperline[i], 8);
+
+ if (p->sizeimage < p->bytesperline * lines)
+ p->sizeimage = p->bytesperline * lines;
+
+ if (p->sizeimage < sizeimage[i])
+ p->sizeimage = sizeimage[i];
+ }

return 0;
}

-static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
+static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
struct camss_video *video = video_drvdata(file);
+ int ret;
+
+ if (vb2_is_busy(&video->vb2_q))
+ return -EBUSY;

- return video_get_subdev_format(video, f);
+ ret = video_try_fmt(file, fh, f);
+ if (ret < 0)
+ return ret;
+
+ video->active_fmt = *f;
+
+ return 0;
}

static int video_enum_input(struct file *file, void *fh,
diff --git a/drivers/media/platform/qcom/camss-8x16/camss-video.h b/drivers/media/platform/qcom/camss-8x16/camss-video.h
index eff6b3d..e36a75b 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-video.h
+++ b/drivers/media/platform/qcom/camss-8x16/camss-video.h
@@ -57,6 +57,8 @@ struct camss_video {
const struct camss_video_ops *ops;
struct mutex lock;
struct mutex q_lock;
+ unsigned int bpl_alignment;
+ unsigned int line_based;
enum camss_fmt_tag fmt_tag;
};

--
2.7.4
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