Re: [PATCH v2 17/18] media: rzg2l-cru: Add function pointer to configure CSI

Laurent Pinchart
2025-02-23T20:04:13Z

Hi Tommaso,

Thank you for the patch.

On Fri, Feb 21, 2025 at 04:55:31PM +0100, Tommaso Merciai wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Add a `csi_setup` function pointer to the `rzg2l_cru_info` structure and
> pass it as part of the OF data. On RZ/G3E and RZ/V2H(P) SoCs, additional
> register configurations are required compared to the RZ/G2L SoC.
>
> Modify `rzg2l_cru_csi2_setup()` to be referenced through this function
> pointer and update the code to use it accordingly.
>
> This change is in preparation for adding support for RZ/G3E and RZ/V2H(P)
> SoCs.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

> ---
> drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c | 1 +
> drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h | 6 ++++++
> drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c | 8 ++++----
> 3 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
> index e4fb3e12d6bf..3ae0cd83af16 100644
> --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
> +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
> @@ -363,6 +363,7 @@ static const struct rzg2l_cru_info rzgl2_cru_info = {
> .enable_interrupts = rzg2l_cru_enable_interrupts,
> .disable_interrupts = rzg2l_cru_disable_interrupts,
> .fifo_empty = rzg2l_fifo_empty,
> + .csi_setup = rzg2l_cru_csi2_setup,
> };
>
> static const struct of_device_id rzg2l_cru_of_id_table[] = {
> diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
> index 2e17bfef43ce..ccaba5220f1c 100644
> --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
> +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
> @@ -89,6 +89,9 @@ struct rzg2l_cru_info {
> void (*enable_interrupts)(struct rzg2l_cru_dev *cru);
> void (*disable_interrupts)(struct rzg2l_cru_dev *cru);
> bool (*fifo_empty)(struct rzg2l_cru_dev *cru);
> + void (*csi_setup)(struct rzg2l_cru_dev *cru,
> + const struct rzg2l_cru_ip_format *ip_fmt,
> + u8 csi_vc);
> };
>
> /**
> @@ -187,5 +190,8 @@ void rzg2l_cru_enable_interrupts(struct rzg2l_cru_dev *cru);
> void rzg2l_cru_disable_interrupts(struct rzg2l_cru_dev *cru);
>
> bool rzg2l_fifo_empty(struct rzg2l_cru_dev *cru);
> +void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
> + const struct rzg2l_cru_ip_format *ip_fmt,
> + u8 csi_vc);
>
> #endif
> diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> index 7cc83486ce03..637c9c9f9ba8 100644
> --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> @@ -196,9 +196,9 @@ static void rzg2l_cru_initialize_axi(struct rzg2l_cru_dev *cru)
> rzg2l_cru_write(cru, AMnAXIATTR, amnaxiattr);
> }
>
> -static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
> - const struct rzg2l_cru_ip_format *ip_fmt,
> - u8 csi_vc)
> +void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
> + const struct rzg2l_cru_ip_format *ip_fmt,
> + u8 csi_vc)
> {
> const struct rzg2l_cru_info *info = cru->info;
> u32 icnmc = ICnMC_INF(ip_fmt->datatype);
> @@ -220,7 +220,7 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
> const struct rzg2l_cru_ip_format *cru_ip_fmt;
>
> cru_ip_fmt = rzg2l_cru_ip_code_to_fmt(ip_sd_fmt->code);
> - rzg2l_cru_csi2_setup(cru, cru_ip_fmt, csi_vc);
> + info->csi_setup(cru, cru_ip_fmt, csi_vc);
>
> /* Output format */
> cru_video_fmt = rzg2l_cru_ip_format_to_fmt(cru->format.pixelformat);

--
Regards,

Laurent Pinchart