[PATCH 14/23] staging: media: tegra-video: move tegra_channel_fmt_align to a per-soc op

luca.ceresoli
2022-11-09T14:19:55Z

tegra_channel_fmt_align() takes care of the size constraints, alignment and
rounding requirements of the Tegra210 VI peripheral. Tegra20 has different
constraints.

In preparation for adding Tegra20 support, move this function to a new op
in the soc-specific `struct tegra_vi_ops` .

Also move to tegra210.c the T210-specific defines used in the moved code.

No functional changes.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
drivers/staging/media/tegra-video/tegra210.c | 36 ++++++++++++++++++
drivers/staging/media/tegra-video/vi.c | 40 +++-----------------
drivers/staging/media/tegra-video/vi.h | 9 ++---
3 files changed, 44 insertions(+), 41 deletions(-)

diff --git a/drivers/staging/media/tegra-video/tegra210.c b/drivers/staging/media/tegra-video/tegra210.c
index eb19dd5107ce..71483d0c19bf 100644
--- a/drivers/staging/media/tegra-video/tegra210.c
+++ b/drivers/staging/media/tegra-video/tegra210.c
@@ -17,6 +17,13 @@
#include "csi.h"
#include "vi.h"

+#define TEGRA210_MIN_WIDTH 32U
+#define TEGRA210_MAX_WIDTH 32768U
+#define TEGRA210_MIN_HEIGHT 32U
+#define TEGRA210_MAX_HEIGHT 32768U
+
+#define SURFACE_ALIGN_BYTES 64
+
#define TEGRA_VI_SYNCPT_WAIT_TIMEOUT msecs_to_jiffies(200)

/* Tegra210 VI registers */
@@ -172,6 +179,34 @@ static u32 vi_csi_read(struct tegra_vi_channel *chan, u8 portno,
/*
* Tegra210 VI channel capture operations
*/
+static void tegra210_fmt_align(struct v4l2_pix_format *pix, unsigned int bpp)
+{
+ unsigned int min_bpl;
+ unsigned int max_bpl;
+ unsigned int bpl;
+
+ /*
+ * The transfer alignment requirements are expressed in bytes.
+ * Clamp the requested width and height to the limits.
+ */
+ pix->width = clamp(pix->width, TEGRA210_MIN_WIDTH, TEGRA210_MAX_WIDTH);
+ pix->height = clamp(pix->height, TEGRA210_MIN_HEIGHT, TEGRA210_MAX_HEIGHT);
+
+ /* Clamp the requested bytes per line value. If the maximum bytes per
+ * line value is zero, the module doesn't support user configurable
+ * line sizes. Override the requested value with the minimum in that
+ * case.
+ */
+ min_bpl = pix->width * bpp;
+ max_bpl = rounddown(TEGRA210_MAX_WIDTH, SURFACE_ALIGN_BYTES);
+ bpl = roundup(pix->bytesperline, SURFACE_ALIGN_BYTES);
+
+ pix->bytesperline = clamp(bpl, min_bpl, max_bpl);
+ pix->sizeimage = pix->bytesperline * pix->height;
+ if (pix->pixelformat == V4L2_PIX_FMT_NV16)
+ pix->sizeimage *= 2;
+}
+
static int tegra_channel_capture_setup(struct tegra_vi_channel *chan,
u8 portno)
{
@@ -723,6 +758,7 @@ static const struct tegra_video_format tegra210_video_formats[] = {

/* Tegra210 VI operations */
static const struct tegra_vi_ops tegra210_vi_ops = {
+ .vi_fmt_align = tegra210_fmt_align,
.vi_start_streaming = tegra210_vi_start_streaming,
.vi_stop_streaming = tegra210_vi_stop_streaming,
};
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 55a135bef1a9..12c2fa760c81 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -456,36 +456,6 @@ static int tegra_channel_get_format(struct file *file, void *fh,
return 0;
}

-static void tegra_channel_fmt_align(struct tegra_vi_channel *chan,
- struct v4l2_pix_format *pix,
- unsigned int bpp)
-{
- unsigned int min_bpl;
- unsigned int max_bpl;
- unsigned int bpl;
-
- /*
- * The transfer alignment requirements are expressed in bytes.
- * Clamp the requested width and height to the limits.
- */
- pix->width = clamp(pix->width, TEGRA_MIN_WIDTH, TEGRA_MAX_WIDTH);
- pix->height = clamp(pix->height, TEGRA_MIN_HEIGHT, TEGRA_MAX_HEIGHT);
-
- /* Clamp the requested bytes per line value. If the maximum bytes per
- * line value is zero, the module doesn't support user configurable
- * line sizes. Override the requested value with the minimum in that
- * case.
- */
- min_bpl = pix->width * bpp;
- max_bpl = rounddown(TEGRA_MAX_WIDTH, SURFACE_ALIGN_BYTES);
- bpl = roundup(pix->bytesperline, SURFACE_ALIGN_BYTES);
-
- pix->bytesperline = clamp(bpl, min_bpl, max_bpl);
- pix->sizeimage = pix->bytesperline * pix->height;
- if (pix->pixelformat == V4L2_PIX_FMT_NV16)
- pix->sizeimage *= 2;
-}
-
static int __tegra_channel_try_format(struct tegra_vi_channel *chan,
struct v4l2_pix_format *pix)
{
@@ -561,7 +531,7 @@ static int __tegra_channel_try_format(struct tegra_vi_channel *chan,
return ret;

v4l2_fill_pix_format(pix, &fmt.format);
- tegra_channel_fmt_align(chan, pix, fmtinfo->bpp);
+ chan->vi->ops->vi_fmt_align(pix, fmtinfo->bpp);

__v4l2_subdev_state_free(sd_state);

@@ -613,7 +583,7 @@ static int tegra_channel_set_format(struct file *file, void *fh,
return ret;

v4l2_fill_pix_format(pix, &fmt.format);
- tegra_channel_fmt_align(chan, pix, fmtinfo->bpp);
+ chan->vi->ops->vi_fmt_align(pix, fmtinfo->bpp);

chan->format = *pix;
chan->fmtinfo = fmtinfo;
@@ -649,7 +619,7 @@ static int tegra_channel_set_subdev_active_fmt(struct tegra_vi_channel *chan)
chan->format.bytesperline = chan->format.width * chan->fmtinfo->bpp;
chan->format.sizeimage = chan->format.bytesperline *
chan->format.height;
- tegra_channel_fmt_align(chan, &chan->format, chan->fmtinfo->bpp);
+ chan->vi->ops->vi_fmt_align(&chan->format, chan->fmtinfo->bpp);
tegra_channel_update_gangports(chan);

return 0;
@@ -818,7 +788,7 @@ static int tegra_channel_s_dv_timings(struct file *file, void *fh,
chan->format.height = bt->height;
chan->format.bytesperline = bt->width * chan->fmtinfo->bpp;
chan->format.sizeimage = chan->format.bytesperline * bt->height;
- tegra_channel_fmt_align(chan, &chan->format, chan->fmtinfo->bpp);
+ chan->vi->ops->vi_fmt_align(&chan->format, chan->fmtinfo->bpp);
tegra_channel_update_gangports(chan);

return 0;
@@ -1149,7 +1119,7 @@ static int tegra_channel_init(struct tegra_vi_channel *chan)
chan->format.height = TEGRA_DEF_HEIGHT;
chan->format.bytesperline = TEGRA_DEF_WIDTH * chan->fmtinfo->bpp;
chan->format.sizeimage = chan->format.bytesperline * TEGRA_DEF_HEIGHT;
- tegra_channel_fmt_align(chan, &chan->format, chan->fmtinfo->bpp);
+ vi->ops->vi_fmt_align(&chan->format, chan->fmtinfo->bpp);

ret = tegra_channel_host1x_syncpt_init(chan);
if (ret)
diff --git a/drivers/staging/media/tegra-video/vi.h b/drivers/staging/media/tegra-video/vi.h
index dfd834a69848..1021c730b595 100644
--- a/drivers/staging/media/tegra-video/vi.h
+++ b/drivers/staging/media/tegra-video/vi.h
@@ -25,17 +25,11 @@

#define V4L2_CID_TEGRA_SYNCPT_TIMEOUT_RETRY (V4L2_CTRL_CLASS_CAMERA | 0x1001)

-#define TEGRA_MIN_WIDTH 32U
-#define TEGRA_MAX_WIDTH 32768U
-#define TEGRA_MIN_HEIGHT 32U
-#define TEGRA_MAX_HEIGHT 32768U
-
#define TEGRA_DEF_WIDTH 1920
#define TEGRA_DEF_HEIGHT 1080
#define TEGRA_IMAGE_FORMAT_DEF 32

#define MAX_FORMAT_NUM 64
-#define SURFACE_ALIGN_BYTES 64

enum tegra_vi_pg_mode {
TEGRA_VI_PG_DISABLED = 0,
@@ -45,6 +39,8 @@ enum tegra_vi_pg_mode {

/**
* struct tegra_vi_ops - Tegra VI operations
+ * @vi_fmt_align: modify `pix` to fit the hardware alignment
+ * requirements and fill image geometry
* @vi_start_streaming: starts media pipeline, subdevice streaming, sets up
* VI for capture and runs capture start and capture finish
* kthreads for capturing frames to buffer and returns them back.
@@ -52,6 +48,7 @@ enum tegra_vi_pg_mode {
* back any queued buffers.
*/
struct tegra_vi_ops {
+ void (*vi_fmt_align)(struct v4l2_pix_format *pix, unsigned int bpp);
int (*vi_start_streaming)(struct vb2_queue *vq, u32 count);
void (*vi_stop_streaming)(struct vb2_queue *vq);
};
--
2.34.1