[v5.2,6/7] media: rkisp1: Implement extensible params support

From: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

Implement support in rkisp1-params for the extensible configuration
parameters format.

Create a list of handlers for each ISP block that wraps the existing
configuration functions and handles the ISP block enablement.

Parse the configuration parameters buffer in rkisp1_ext_params_config
and filter the enable blocks by group, to allow setting the 'other'
groups separately from the 'lsc' group to support the pre/post-configure
operations.

Implement parameter buffer validation for the extensible format at
.buf_prepare() time.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
---
Changes since v5.1:

- Fix incorrect debug message
- Avoid rewrapping comments unnecessarily

Changes since v5:

- Use correct struct type for cfg in rkisp1_params_vb2_buf_prepare()
- Replace sizeof(type) with sizeof(var)
- Refactor rkisp1_params_vb2_buf_prepare() to reduce indentation
---
 .../platform/rockchip/rkisp1/rkisp1-common.h  |   3 +
 .../platform/rockchip/rkisp1/rkisp1-params.c  | 598 +++++++++++++++++-
 2 files changed, 589 insertions(+), 12 deletions(-)

Hi Paul

On Fri, Jul 05, 2024 at 08:21:28PM GMT, Paul Elder wrote:
> On Thu, Jul 04, 2024 at 12:56:11PM +0300, Laurent Pinchart wrote:
> > From: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> >
> > Implement support in rkisp1-params for the extensible configuration
> > parameters format.
> >
> > Create a list of handlers for each ISP block that wraps the existing
> > configuration functions and handles the ISP block enablement.
> >
> > Parse the configuration parameters buffer in rkisp1_ext_params_config
> > and filter the enable blocks by group, to allow setting the 'other'
> > groups separately from the 'lsc' group to support the pre/post-configure
> > operations.
> >
> > Implement parameter buffer validation for the extensible format at
> > .buf_prepare() time.
> >
> > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > ---
> > Changes since v5.1:
> >
> > - Fix incorrect debug message
> > - Avoid rewrapping comments unnecessarily
> >
> > Changes since v5:
> >
> > - Use correct struct type for cfg in rkisp1_params_vb2_buf_prepare()
> > - Replace sizeof(type) with sizeof(var)
> > - Refactor rkisp1_params_vb2_buf_prepare() to reduce indentation
> > ---
> >  .../platform/rockchip/rkisp1/rkisp1-common.h  |   3 +
> >  .../platform/rockchip/rkisp1/rkisp1-params.c  | 598 +++++++++++++++++-
> >  2 files changed, 589 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> > index b4369bbccea3..c1689c0fa05a 100644
> > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> > @@ -401,6 +401,7 @@ struct rkisp1_params_ops {
> >   * @quantization:	the quantization configured on the isp's src pad
> >   * @ycbcr_encoding	the YCbCr encoding
> >   * @raw_type:		the bayer pattern on the isp video sink pad
> > + * @enabled_blocks:	bitmask of enabled ISP blocks
> >   */
> >  struct rkisp1_params {
> >  	struct rkisp1_vdev_node vnode;
> > @@ -415,6 +416,8 @@ struct rkisp1_params {
> >  	enum v4l2_quantization quantization;
> >  	enum v4l2_ycbcr_encoding ycbcr_encoding;
> >  	enum rkisp1_fmt_raw_pat_type raw_type;
> > +
> > +	u32 enabled_blocks;
> >  };
> >
> >  /*
> > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> > index 45c4b1bcee63..c216aec4252f 100644
> > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> > @@ -35,6 +35,30 @@
> >  #define RKISP1_ISP_CC_COEFF(n) \
> >  			(RKISP1_CIF_ISP_CC_COEFF_0 + (n) * 4)
> >
> > +#define RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS	BIT(0)
> > +#define RKISP1_EXT_PARAMS_BLOCK_GROUP_LSC	BIT(1)
> > +
> > +union rkisp1_ext_params_config {
> > +	struct rkisp1_ext_params_block_header header;
> > +	struct rkisp1_ext_params_bls_config bls;
> > +	struct rkisp1_ext_params_dpcc_config dpcc;
> > +	struct rkisp1_ext_params_sdg_config sdg;
> > +	struct rkisp1_ext_params_lsc_config lsc;
> > +	struct rkisp1_ext_params_awb_gain_config awbg;
> > +	struct rkisp1_ext_params_flt_config flt;
> > +	struct rkisp1_ext_params_bdm_config bdm;
> > +	struct rkisp1_ext_params_ctk_config ctk;
> > +	struct rkisp1_ext_params_goc_config goc;
> > +	struct rkisp1_ext_params_dpf_config dpf;
> > +	struct rkisp1_ext_params_dpf_strength_config dpfs;
> > +	struct rkisp1_ext_params_cproc_config cproc;
> > +	struct rkisp1_ext_params_ie_config ie;
> > +	struct rkisp1_ext_params_awb_meas_config awbm;
> > +	struct rkisp1_ext_params_hst_config hst;
> > +	struct rkisp1_ext_params_aec_config aec;
> > +	struct rkisp1_ext_params_afc_config afc;
> > +};
> > +
>
> I was wondering if this would cause uapi breakages if a bigger one was
> added in the future but I see that based on how this is used it should
> be fine.
>

Please note this is in the driver .c file and not part of the uAPI

> >  enum rkisp1_params_formats {
> >  	RKISP1_PARAMS_FIXED,
> >  	RKISP1_PARAMS_EXTENSIBLE,
> > @@ -1519,6 +1543,451 @@ static void rkisp1_isp_isr_meas_config(struct rkisp1_params *params,
> >  	}
> >  }
> >
> > +/*------------------------------------------------------------------------------
> > + * Extensible parameters format handling
> > + */
> > +
> > +static void
> > +rkisp1_ext_params_bls(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_bls_config *bls = &block->bls;
> > +
> > +	if (bls->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_BLS_CTRL,
> > +					RKISP1_CIF_ISP_BLS_ENA);
> > +		return;
> > +	}
> > +
> > +	rkisp1_bls_config(params, &bls->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_BLS_CTRL,
> > +				      RKISP1_CIF_ISP_BLS_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_dpcc(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_dpcc_config *dpcc = &block->dpcc;
> > +
> > +	if (dpcc->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_DPCC_MODE,
> > +					RKISP1_CIF_ISP_DPCC_MODE_DPCC_ENABLE);
> > +		return;
> > +	}
> > +
> > +	rkisp1_dpcc_config(params, &dpcc->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_DPCC_MODE,
> > +				      RKISP1_CIF_ISP_DPCC_MODE_DPCC_ENABLE);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_sdg(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_sdg_config *sdg = &block->sdg;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_CTRL,
> > +					RKISP1_CIF_ISP_CTRL_ISP_GAMMA_IN_ENA);
> > +		return;
> > +	}
> > +
> > +	rkisp1_sdg_config(params, &sdg->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_SDG)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > +				      RKISP1_CIF_ISP_CTRL_ISP_GAMMA_IN_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_lsc(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_lsc_config *lsc = &block->lsc;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_LSC_CTRL,
> > +					RKISP1_CIF_ISP_LSC_CTRL_ENA);
> > +		return;
> > +	}
> > +
> > +	rkisp1_lsc_config(params, &lsc->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_LSC)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_LSC_CTRL,
> > +				      RKISP1_CIF_ISP_LSC_CTRL_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_awbg(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_awb_gain_config *awbg = &block->awbg;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_CTRL,
> > +					RKISP1_CIF_ISP_CTRL_ISP_AWB_ENA);
> > +		return;
> > +	}
> > +
> > +	params->ops->awb_gain_config(params, &awbg->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_GAIN)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > +				      RKISP1_CIF_ISP_CTRL_ISP_AWB_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_flt(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_flt_config *flt = &block->flt;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_FILT_MODE,
> > +					RKISP1_CIF_ISP_FLT_ENA);
> > +		return;
> > +	}
> > +
> > +	rkisp1_flt_config(params, &flt->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_FLT)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_FILT_MODE,
> > +				      RKISP1_CIF_ISP_FLT_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_bdm(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_bdm_config *bdm = &block->bdm;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_DEMOSAIC,
> > +					RKISP1_CIF_ISP_DEMOSAIC_BYPASS);
> > +		return;
> > +	}
> > +
> > +	rkisp1_bdm_config(params, &bdm->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_BDM)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_DEMOSAIC,
> > +				      RKISP1_CIF_ISP_DEMOSAIC_BYPASS);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_ctk(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_ctk_config *ctk = &block->ctk;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_ctk_enable(params, false);
> > +		return;
> > +	}
> > +
> > +	rkisp1_ctk_config(params, &ctk->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_CTK)))
> > +		rkisp1_ctk_enable(params, true);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_goc(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_goc_config *goc = &block->goc;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_CTRL,
> > +					RKISP1_CIF_ISP_CTRL_ISP_GAMMA_OUT_ENA);
> > +		return;
> > +	}
> > +
> > +	params->ops->goc_config(params, &goc->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_GOC)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > +				      RKISP1_CIF_ISP_CTRL_ISP_GAMMA_OUT_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_dpf(struct rkisp1_params *params,
> > +		      const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_dpf_config *dpf = &block->dpf;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_DPF_MODE,
> > +					RKISP1_CIF_ISP_DPF_MODE_EN);
> > +		return;
> > +	}
> > +
> > +	rkisp1_dpf_config(params, &dpf->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_DPF_MODE,
> > +				      RKISP1_CIF_ISP_DPF_MODE_EN);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_dpfs(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_dpf_strength_config *dpfs = &block->dpfs;
> > +
> > +	rkisp1_dpf_strength_config(params, &dpfs->config);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_cproc(struct rkisp1_params *params,
> > +			const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_cproc_config *cproc = &block->cproc;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_C_PROC_CTRL,
> > +					RKISP1_CIF_C_PROC_CTR_ENABLE);
> > +		return;
> > +	}
> > +
> > +	rkisp1_cproc_config(params, &cproc->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_CPROC)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_C_PROC_CTRL,
> > +				      RKISP1_CIF_C_PROC_CTR_ENABLE);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_ie(struct rkisp1_params *params,
> > +		     const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_ie_config *ie = &block->ie;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_ie_enable(params, false);
> > +		return;
> > +	}
> > +
> > +	rkisp1_ie_config(params, &ie->config);
> > +
> > +	if (!(params->enabled_blocks & BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_IE)))
> > +		rkisp1_ie_enable(params, true);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_awbm(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_awb_meas_config *awbm = &block->awbm;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		params->ops->awb_meas_enable(params, &awbm->config,
> > +					     false);
> > +		return;
> > +	}
> > +
> > +	params->ops->awb_meas_config(params, &awbm->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_MEAS)))
> > +		params->ops->awb_meas_enable(params, &awbm->config,
> > +					     true);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_hstm(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_hst_config *hst = &block->hst;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		params->ops->hst_enable(params, &hst->config, false);
> > +		return;
> > +	}
> > +
> > +	params->ops->hst_config(params, &hst->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_HST_MEAS)))
> > +		params->ops->hst_enable(params, &hst->config, true);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_aecm(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_aec_config *aec = &block->aec;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_EXP_CTRL,
> > +					RKISP1_CIF_ISP_EXP_ENA);
> > +		return;
> > +	}
> > +
> > +	params->ops->aec_config(params, &aec->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_AEC_MEAS)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_EXP_CTRL,
> > +				      RKISP1_CIF_ISP_EXP_ENA);
> > +}
> > +
> > +static void
> > +rkisp1_ext_params_afcm(struct rkisp1_params *params,
> > +		       const union rkisp1_ext_params_config *block)
> > +{
> > +	const struct rkisp1_ext_params_afc_config *afc = &block->afc;
> > +
> > +	if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE) {
> > +		rkisp1_param_clear_bits(params, RKISP1_CIF_ISP_AFM_CTRL,
> > +					RKISP1_CIF_ISP_AFM_ENA);
> > +		return;
> > +	}
> > +
> > +	params->ops->afm_config(params, &afc->config);
> > +
> > +	if (!(params->enabled_blocks &
> > +	      BIT(RKISP1_EXT_PARAMS_BLOCK_TYPE_AFC_MEAS)))
> > +		rkisp1_param_set_bits(params, RKISP1_CIF_ISP_AFM_CTRL,
> > +				      RKISP1_CIF_ISP_AFM_ENA);
> > +}
> > +
> > +typedef void (*rkisp1_block_handler)(struct rkisp1_params *params,
> > +			     const union rkisp1_ext_params_config *config);
> > +
> > +static const struct rkisp1_ext_params_handler {
> > +	size_t size;
> > +	rkisp1_block_handler handler;
> > +	unsigned int group;
> > +} rkisp1_ext_params_handlers[] = {
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_bls_config),
> > +		.handler	= rkisp1_ext_params_bls,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_dpcc_config),
> > +		.handler	= rkisp1_ext_params_dpcc,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_SDG] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_sdg_config),
> > +		.handler	= rkisp1_ext_params_sdg,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_GAIN] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_awb_gain_config),
> > +		.handler	= rkisp1_ext_params_awbg,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_FLT] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_flt_config),
> > +		.handler	= rkisp1_ext_params_flt,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_BDM] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_bdm_config),
> > +		.handler	= rkisp1_ext_params_bdm,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_CTK] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_ctk_config),
> > +		.handler	= rkisp1_ext_params_ctk,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_GOC] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_goc_config),
> > +		.handler	= rkisp1_ext_params_goc,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_dpf_config),
> > +		.handler	= rkisp1_ext_params_dpf,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF_STRENGTH] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_dpf_strength_config),
> > +		.handler	= rkisp1_ext_params_dpfs,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_CPROC] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_cproc_config),
> > +		.handler	= rkisp1_ext_params_cproc,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_IE] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_ie_config),
> > +		.handler	= rkisp1_ext_params_ie,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_LSC] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_lsc_config),
> > +		.handler	= rkisp1_ext_params_lsc,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_LSC,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_MEAS] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_awb_meas_config),
> > +		.handler	= rkisp1_ext_params_awbm,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_HST_MEAS] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_hst_config),
> > +		.handler	= rkisp1_ext_params_hstm,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_AEC_MEAS] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_aec_config),
> > +		.handler	= rkisp1_ext_params_aecm,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +	[RKISP1_EXT_PARAMS_BLOCK_TYPE_AFC_MEAS] = {
> > +		.size		= sizeof(struct rkisp1_ext_params_afc_config),
> > +		.handler	= rkisp1_ext_params_afcm,
> > +		.group		= RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS,
> > +	},
> > +};
> > +
> > +static void rkisp1_ext_params_config(struct rkisp1_params *params,
> > +				     struct rkisp1_ext_params_cfg *cfg,
> > +				     u32 block_group_mask)
> > +{
> > +	size_t block_offset = 0;
> > +
> > +	if (WARN_ON(!cfg))
> > +		return;
> > +
> > +	/* Walk the list of parameter blocks and process them. */
> > +	while (block_offset < cfg->data_size) {
> > +		const struct rkisp1_ext_params_handler *block_handler;
> > +		const union rkisp1_ext_params_config *block;
> > +
> > +		block = (const union rkisp1_ext_params_config *)
> > +			&cfg->data[block_offset];
> > +		block_offset += block->header.size;
> > +
> > +		/* Make sure the block is in the list of groups to configure. */
> > +		block_handler = &rkisp1_ext_params_handlers[block->header.type];
>
> Doesn't block->header.type come from userspace...? What if it's past the
> array size...?
>
> Oh it's validated below in rkisp1_params_prepare_ext_params ok.
>
>
> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
>

Thanks
  j

> > +		if (!(block_handler->group & block_group_mask))
> > +			continue;
> > +
> > +		block_handler->handler(params, block);
> > +
> > +		if (block->header.enable == RKISP1_EXT_PARAMS_BLOCK_DISABLE)
> > +			params->enabled_blocks &= ~BIT(block->header.type);
> > +		else
> > +			params->enabled_blocks |= BIT(block->header.type);
> > +	}
> > +}
> > +
> >  static void rkisp1_params_complete_buffer(struct rkisp1_params *params,
> >  					  struct rkisp1_params_buffer *buf,
> >  					  unsigned int frame_sequence)
> > @@ -1541,9 +2010,15 @@ void rkisp1_params_isr(struct rkisp1_device *rkisp1)
> >  	if (!cur_buf)
> >  		goto unlock;
> >
> > -	rkisp1_isp_isr_other_config(params, cur_buf->cfg);
> > -	rkisp1_isp_isr_lsc_config(params, cur_buf->cfg);
> > -	rkisp1_isp_isr_meas_config(params, cur_buf->cfg);
> > +	if (params->metafmt->dataformat == V4L2_META_FMT_RK_ISP1_PARAMS) {
> > +		rkisp1_isp_isr_other_config(params, cur_buf->cfg);
> > +		rkisp1_isp_isr_lsc_config(params, cur_buf->cfg);
> > +		rkisp1_isp_isr_meas_config(params, cur_buf->cfg);
> > +	} else {
> > +		rkisp1_ext_params_config(params, cur_buf->cfg,
> > +					 RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS |
> > +					 RKISP1_EXT_PARAMS_BLOCK_GROUP_LSC);
> > +	}
> >
> >  	/* update shadow register immediately */
> >  	rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > @@ -1643,8 +2118,13 @@ void rkisp1_params_pre_configure(struct rkisp1_params *params,
> >  	if (!cur_buf)
> >  		goto unlock;
> >
> > -	rkisp1_isp_isr_other_config(params, cur_buf->cfg);
> > -	rkisp1_isp_isr_meas_config(params, cur_buf->cfg);
> > +	if (params->metafmt->dataformat == V4L2_META_FMT_RK_ISP1_PARAMS) {
> > +		rkisp1_isp_isr_other_config(params, cur_buf->cfg);
> > +		rkisp1_isp_isr_meas_config(params, cur_buf->cfg);
> > +	} else {
> > +		rkisp1_ext_params_config(params, cur_buf->cfg,
> > +					 RKISP1_EXT_PARAMS_BLOCK_GROUP_OTHERS);
> > +	}
> >
> >  	/* update shadow register immediately */
> >  	rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > @@ -1673,7 +2153,11 @@ void rkisp1_params_post_configure(struct rkisp1_params *params)
> >  	if (!cur_buf)
> >  		goto unlock;
> >
> > -	rkisp1_isp_isr_lsc_config(params, cur_buf->cfg);
> > +	if (params->metafmt->dataformat == V4L2_META_FMT_RK_ISP1_PARAMS)
> > +		rkisp1_isp_isr_lsc_config(params, cur_buf->cfg);
> > +	else
> > +		rkisp1_ext_params_config(params, cur_buf->cfg,
> > +					 RKISP1_EXT_PARAMS_BLOCK_GROUP_LSC);
> >
> >  	/* update shadow register immediately */
> >  	rkisp1_param_set_bits(params, RKISP1_CIF_ISP_CTRL,
> > @@ -1862,21 +2346,110 @@ static void rkisp1_params_vb2_buf_queue(struct vb2_buffer *vb)
> >  	spin_unlock_irq(&params->config_lock);
> >  }
> >
> > -static int rkisp1_params_vb2_buf_prepare(struct vb2_buffer *vb)
> > +static int rkisp1_params_prepare_ext_params(struct rkisp1_params *params,
> > +					    struct vb2_buffer *vb)
> >  {
> >  	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> >  	struct rkisp1_params_buffer *params_buf = to_rkisp1_params_buffer(vbuf);
> > -	struct rkisp1_params_cfg *cfg =
> > -		vb2_plane_vaddr(&params_buf->vb.vb2_buf, 0);
> > +	size_t header_size = offsetof(struct rkisp1_ext_params_cfg, data);
> > +	struct rkisp1_ext_params_cfg *cfg = params_buf->cfg;
> > +	size_t payload_size = vb2_get_plane_payload(vb, 0);
> > +	struct rkisp1_ext_params_cfg *usr_cfg =
> > +		vb2_plane_vaddr(&vbuf->vb2_buf, 0);
> > +	size_t block_offset = 0;
> > +	size_t cfg_size;
> >
> > -	if (vb2_get_plane_payload(vb, 0) != sizeof(*cfg))
> > +	/*
> > +	 * Validate the buffer payload size before copying the parameters. The
> > +	 * payload has to be smaller than the destination buffer size and larger
> > +	 * than the header size.
> > +	 */
> > +	if (payload_size > params->metafmt->buffersize) {
> > +		dev_dbg(params->rkisp1->dev,
> > +			"Too large buffer payload size %lu\n", payload_size);
> > +		return -EINVAL;
> > +	}
> > +
> > +	if (payload_size < header_size) {
> > +		dev_dbg(params->rkisp1->dev,
> > +			"Buffer payload %lu smaller than header size %lu\n",
> > +			payload_size, header_size);
> > +		return -EINVAL;
> > +	}
> > +
> > +	/*
> > +	 * Copy the parameters buffer to the internal scratch buffer to avoid
> > +	 * userspace modifying the buffer content while the driver processes it.
> > +	 */
> > +	memcpy(cfg, usr_cfg, payload_size);
> > +
> > +	/* Validate the size reported in the parameters buffer header. */
> > +	cfg_size = header_size + cfg->data_size;
> > +	if (cfg_size != payload_size) {
> > +		dev_dbg(params->rkisp1->dev,
> > +			"Data size %lu different than buffer payload size %lu\n",
> > +			cfg_size, payload_size);
> > +		return -EINVAL;
> > +	}
> > +
> > +	/* Walk the list of parameter blocks and validate them. */
> > +	cfg_size = cfg->data_size;
> > +	while (cfg_size >= sizeof(struct rkisp1_ext_params_block_header)) {
> > +		const struct rkisp1_ext_params_block_header *block;
> > +		const struct rkisp1_ext_params_handler *handler;
> > +
> > +		block = (const struct rkisp1_ext_params_block_header *)
> > +			&cfg->data[block_offset];
> > +
> > +		if (block->type >= ARRAY_SIZE(rkisp1_ext_params_handlers)) {
> > +			dev_dbg(params->rkisp1->dev,
> > +				"Invalid parameters block type\n");
> > +			return -EINVAL;
> > +		}
> > +
> > +		if (block->size > cfg_size) {
> > +			dev_dbg(params->rkisp1->dev,
> > +				"Premature end of parameters data\n");
> > +			return -EINVAL;
> > +		}
> > +
> > +		handler = &rkisp1_ext_params_handlers[block->type];
> > +		if (block->size != handler->size) {
> > +			dev_dbg(params->rkisp1->dev,
> > +				"Invalid parameters block size\n");
> > +			return -EINVAL;
> > +		}
> > +
> > +		block_offset += block->size;
> > +		cfg_size -= block->size;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +static int rkisp1_params_vb2_buf_prepare(struct vb2_buffer *vb)
> > +{
> > +	struct rkisp1_params *params = vb->vb2_queue->drv_priv;
> > +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> > +	struct rkisp1_params_buffer *params_buf = to_rkisp1_params_buffer(vbuf);
> > +	struct rkisp1_params_cfg *cfg = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
> > +	size_t payload = vb2_get_plane_payload(vb, 0);
> > +
> > +	if (params->metafmt->dataformat == V4L2_META_FMT_RK_ISP1_EXT_PARAMS)
> > +		return rkisp1_params_prepare_ext_params(params, vb);
> > +
> > +	/*
> > +	 * For the fixed parameters format the payload size must be exactly the
> > +	 * size of the parameters structure.
> > +	 */
> > +	if (payload != sizeof(*cfg))
> >  		return -EINVAL;
> >
> >  	/*
> >  	 * Copy the parameters buffer to the internal scratch buffer to avoid
> >  	 * userspace modifying the buffer content while the driver processes it.
> >  	 */
> > -	memcpy(params_buf->cfg, cfg, sizeof(*cfg));
> > +	memcpy(params_buf->cfg, cfg, payload);
> >
> >  	return 0;
> >  }
> > @@ -1898,6 +2471,8 @@ static void rkisp1_params_vb2_stop_streaming(struct vb2_queue *vq)
> >
> >  	list_for_each_entry(buf, &tmp_list, queue)
> >  		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
> > +
> > +	params->enabled_blocks = 0;
> >  }
> >
> >  static const struct vb2_ops rkisp1_params_vb2_ops = {
> > @@ -1909,7 +2484,6 @@ static const struct vb2_ops rkisp1_params_vb2_ops = {
> >  	.buf_queue = rkisp1_params_vb2_buf_queue,
> >  	.buf_prepare = rkisp1_params_vb2_buf_prepare,
> >  	.stop_streaming = rkisp1_params_vb2_stop_streaming,
> > -
> >  };
> >
> >  static const struct v4l2_file_operations rkisp1_params_fops = {
>