Hi Paul,
Thank you for the patch.
On Thu, Jan 11, 2024 at 08:48:24PM +0900, Paul Elder wrote:
> Some versions of the ISP supported by the rkisp1 driver, such as the ISP
> in the i.MX8MP, lack the dual crop registers and don't support cropping
> at the resizer input. They instead rely on cropping in the Image
> Stabilization module, at the output of the ISP, to modify the resizer
> input size and implement digital zoom.
>
> Support those ISP versions by addind a dual crop feature flag, and
s/addind/adding/
> mapping the resizer input crop rectangle to either the resizer dual crop
> module or the image stabilization module.
The implementation doesn't match the commit message. You only disable
dual-crop here, you don't handle the image stabilization module. I'm
fine with that, I think adding IS support belongs to a separate patch,
but what this patch is missing is disabling the ability to set a crop
rectangle on the resizer input when dual-crop is not supported.
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
> Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
> Tested-by: Adam Ford <aford173@xxxxxxxxx>
> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
> ---
> drivers/media/platform/rockchip/rkisp1/rkisp1-common.h | 2 ++
> drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c | 6 ++++--
> drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 6 ++++--
> 3 files changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> index f7c251f79aa9..219d4a2547aa 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> @@ -112,6 +112,7 @@ enum rkisp1_isp_pad {
> * @RKISP1_FEATURE_MIPI_CSI2: The ISP has an internal MIPI CSI-2 receiver
> * @RKISP1_FEATURE_MAIN_STRIDE: The ISP supports configurable stride on the main path
> * @RKISP1_FEATURE_SELF_PATH: The ISP has a self path
> + * @RKISP1_FEATURE_DUAL_CROP: The ISP has the dual crop block at the resizer input
> *
> * The ISP features are stored in a bitmask in &rkisp1_info.features and allow
> * the driver to implement support for features present in some ISP versions
> @@ -121,6 +122,7 @@ enum rkisp1_feature {
> RKISP1_FEATURE_MIPI_CSI2 = BIT(0),
> RKISP1_FEATURE_MAIN_STRIDE = BIT(1),
> RKISP1_FEATURE_SELF_PATH = BIT(2),
> + RKISP1_FEATURE_DUAL_CROP = BIT(3),
> };
>
> #define rkisp1_has_feature(rkisp1, feature) \
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> index f48a21985b18..2e40c376cab5 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> @@ -507,7 +507,8 @@ static const struct rkisp1_info px30_isp_info = {
> .isr_size = ARRAY_SIZE(px30_isp_isrs),
> .isp_ver = RKISP1_V12,
> .features = RKISP1_FEATURE_MIPI_CSI2
> - | RKISP1_FEATURE_SELF_PATH,
> + | RKISP1_FEATURE_SELF_PATH
> + | RKISP1_FEATURE_DUAL_CROP,
> };
>
> static const char * const rk3399_isp_clks[] = {
> @@ -527,7 +528,8 @@ static const struct rkisp1_info rk3399_isp_info = {
> .isr_size = ARRAY_SIZE(rk3399_isp_isrs),
> .isp_ver = RKISP1_V10,
> .features = RKISP1_FEATURE_MIPI_CSI2
> - | RKISP1_FEATURE_SELF_PATH,
> + | RKISP1_FEATURE_SELF_PATH
> + | RKISP1_FEATURE_DUAL_CROP,
> };
>
> static const struct of_device_id rkisp1_of_match[] = {
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> index dd77a31e6014..de2eb2c97cc4 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> @@ -635,7 +635,8 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int enable)
> struct v4l2_subdev_state *sd_state;
>
> if (!enable) {
> - rkisp1_dcrop_disable(rsz, RKISP1_SHADOW_REGS_ASYNC);
> + if (rkisp1_has_feature(rkisp1, DUAL_CROP))
> + rkisp1_dcrop_disable(rsz, RKISP1_SHADOW_REGS_ASYNC);
> rkisp1_rsz_disable(rsz, RKISP1_SHADOW_REGS_ASYNC);
> return 0;
> }
> @@ -646,7 +647,8 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int enable)
> sd_state = v4l2_subdev_lock_and_get_active_state(sd);
>
> rkisp1_rsz_config(rsz, sd_state, when);
> - rkisp1_dcrop_config(rsz, sd_state);
> + if (rkisp1_has_feature(rkisp1, DUAL_CROP))
> + rkisp1_dcrop_config(rsz, sd_state);
>
> v4l2_subdev_unlock_state(sd_state);
>
--
Regards,
Laurent Pinchart
