Hi All,
Turns out that, in addition the below, one more soc-camera ops
function is still needed.
Init is required in my case to make a call to the subdev->ops->core_ops->init
function in order to put the register contents back after the reset callback
in soc_camera_open.
I'm guessing down the line it will make sense to call this directly in
soc_camera
or are the circumstances where it should call additional init functions?
> Updated temporary patch to get ov7670 working with soc camera.
>
> ---
> Basically this is the original patch with the changes Guennadi
> suggested. Again this is only for info, not a formal patch submission.
>
>
> diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
> index 0e2184e..9bea804 100644
> --- a/drivers/media/video/ov7670.c
> +++ b/drivers/media/video/ov7670.c
> @@ -19,6 +19,12 @@
> #include <media/v4l2-chip-ident.h>
> #include <media/v4l2-i2c-drv.h>
>
> +#define OV7670_SOC
> +
> +
> +#ifdef OV7670_SOC
> +#include <media/soc_camera.h>
> +#endif /* OV7670_SOC */
>
> MODULE_AUTHOR("Jonathan Corbet <[email protected]>");
> MODULE_DESCRIPTION("A low-level driver for OmniVision ov7670 sensors");
> @@ -1239,13 +1245,58 @@ static const struct v4l2_subdev_ops ov7670_ops = {
> };
>
> /* ----------------------------------------------------------------------- */
> +#ifdef OV7670_SOC
> +
> +static unsigned long ov7670_soc_query_bus_param(struct soc_camera_device
> *icd)
> +{
> + struct soc_camera_link *icl = to_soc_camera_link(icd);
> +
> + unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
> + SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
> + SOCAM_DATAWIDTH_8 | SOCAM_DATA_ACTIVE_HIGH;
> +
> + return soc_camera_apply_sensor_flags(icl, flags);
> +}
> +/* This device only supports one bus option */
> +static int ov7670_soc_set_bus_param(struct soc_camera_device *icd,
> + unsigned long flags)
> +{
> + return 0;
> +}
> +
> +static struct soc_camera_ops ov7670_soc_ops = {
> + .set_bus_param = ov7670_soc_set_bus_param,
> + .query_bus_param = ov7670_soc_query_bus_param,
> +};
>
> +#define SETFOURCC(type) .name = (#type), .fourcc = (V4L2_PIX_FMT_ ## type)
> +static const struct soc_camera_data_format ov7670_soc_fmt_lists[] = {
> + {
> + SETFOURCC(YUYV),
> + .depth = 16,
> + .colorspace = V4L2_COLORSPACE_JPEG,
> + }, {
> + SETFOURCC(RGB565),
> + .depth = 16,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + },
> +};
> +
> +#endif
> static int ov7670_probe(struct i2c_client *client,
> const struct i2c_device_id *id)
> {
> struct v4l2_subdev *sd;
> struct ov7670_info *info;
> int ret;
> +#ifdef OV7670_SOC
> + struct soc_camera_device *icd = client->dev.platform_data;
> + icd->ops = &ov7670_soc_ops;
> + icd->rect_max.width = VGA_WIDTH;
> + icd->rect_max.height = VGA_HEIGHT;
> + icd->formats = ov7670_soc_fmt_lists;
> + icd->num_formats = ARRAY_SIZE(ov7670_soc_fmt_lists);
> +#endif
>
> info = kzalloc(sizeof(struct ov7670_info), GFP_KERNEL);
> if (info == NULL)
>
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