Re: [PATCH v2 2/5] media: rkisp1: Add features mask to extensible block handlers

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On Thu, Jul 04, 2024 at 06:49:29PM +0300, Laurent Pinchart wrote:
> Future ISP parameter blocks for i.MX8MP-specific features will not
> support on Rockchip platforms as they lack the corresponding hardware.
> Introduce a features mask in the extensible block handlers to indicate
> which device features a block require, and ignore blocks that require
> unavailable features.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

Reviewed-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>

> ---
> Changes since v1:
> 
> - Expand comment
> - Fix feature check test
> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-params.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> index c56365c7c51f..d3a7c7f55db0 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> @@ -1845,6 +1845,7 @@ static const struct rkisp1_ext_params_handler {
>  	size_t size;
>  	rkisp1_block_handler handler;
>  	unsigned int group;
> +	unsigned int features;
>  } rkisp1_ext_params_handlers[] = {
>  	[RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS] = {
>  		.size		= sizeof(struct rkisp1_ext_params_bls_config),
> @@ -1951,11 +1952,18 @@ static void rkisp1_ext_params_config(struct rkisp1_params *params,
>  			&cfg->data[block_offset];
>  		block_offset += block->header.size;
>  
> -		/* Make sure the block is in the list of groups to configure. */
> +		/*
> +		 * Make sure the block is supported by the platform and in the
> +		 * list of groups to configure.
> +		 */
>  		block_handler = &rkisp1_ext_params_handlers[block->header.type];
>  		if (!(block_handler->group & block_group_mask))
>  			continue;
>  
> +		if ((params->rkisp1->info->features & block_handler->features) !=
> +		    block_handler->features)
> +			continue;
> +
>  		block_handler->handler(params, block);
>  
>  		if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE)




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