Besides the image data, SMIA++ compliant sensors also provide embedded
data in form of registers used to capture the image. Store this
information for later use in frame descriptor and routing.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/i2c/smiapp/smiapp-core.c | 46 +++++++++++++++++++---------------
drivers/media/i2c/smiapp/smiapp.h | 5 +++-
2 files changed, 30 insertions(+), 21 deletions(-)
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 7ac0d4e0..a7afcea 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -68,10 +68,9 @@ static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
unsigned int i;
- int rval;
+ int pixel_count = 0;
int line_count = 0;
- int embedded_start = -1, embedded_end = -1;
- int image_start = 0;
+ int rval;
rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
&fmt_model_type);
@@ -166,33 +165,40 @@ static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
dev_dbg(&client->dev, "%s pixels: %d %s\n",
what, pixels, which);
- if (i < ncol_desc)
+ if (i < ncol_desc) {
+ if (pixelcode ==
+ SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE)
+ sensor->visible_pixel_start = pixel_count;
+ pixel_count += pixels;
continue;
+ }
/* Handle row descriptors */
- if (pixelcode
- == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) {
- embedded_start = line_count;
- } else {
- if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE
- || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2)
- image_start = line_count;
- if (embedded_start != -1 && embedded_end == -1)
- embedded_end = line_count;
+ switch (pixelcode) {
+ case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
+ if (sensor->embedded_end)
+ break;
+ sensor->embedded_start = line_count;
+ sensor->embedded_end = line_count + pixels;
+ break;
+ case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
+ sensor->image_start = line_count;
+ break;
}
line_count += pixels;
}
- if (embedded_start == -1 || embedded_end == -1) {
- embedded_start = 0;
- embedded_end = 0;
+ if (sensor->embedded_end > sensor->image_start) {
+ dev_dbg(&client->dev,
+ "adjusting image start line to %u (was %u)\n",
+ sensor->embedded_end, sensor->image_start);
+ sensor->image_start = sensor->embedded_end;
}
- sensor->image_start = image_start;
-
dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
- embedded_start, embedded_end);
- dev_dbg(&client->dev, "image data starts at line %d\n", image_start);
+ sensor->embedded_start, sensor->embedded_end);
+ dev_dbg(&client->dev, "image data starts at line %d\n",
+ sensor->image_start);
return 0;
}
diff --git a/drivers/media/i2c/smiapp/smiapp.h b/drivers/media/i2c/smiapp/smiapp.h
index f9febe0..d7b52a6 100644
--- a/drivers/media/i2c/smiapp/smiapp.h
+++ b/drivers/media/i2c/smiapp/smiapp.h
@@ -213,7 +213,10 @@ struct smiapp_sensor {
u8 hvflip_inv_mask; /* H/VFLIP inversion due to sensor orientation */
u8 frame_skip;
- u16 image_start; /* Offset to first line after metadata lines */
+ u16 embedded_start; /* embedded data start line */
+ u16 embedded_end;
+ u16 image_start; /* image data start line */
+ u16 visible_pixel_start; /* start pixel of the visible image */
int power_count;
--
2.1.4
--
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