Hi Jacopo,
Thank you for the patch.
On Fri, Jun 21, 2024 at 04:53:59PM +0200, Jacopo Mondi wrote:
> Add to the rkisp1-config.h header data types and documentation of
> the extensible parameters format.
>
> Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
> ---
> include/uapi/linux/rkisp1-config.h | 497 +++++++++++++++++++++++++++++
> 1 file changed, 497 insertions(+)
>
> diff --git a/include/uapi/linux/rkisp1-config.h b/include/uapi/linux/rkisp1-config.h
> index 6eeaf8bf2362..900e04a67a81 100644
> --- a/include/uapi/linux/rkisp1-config.h
> +++ b/include/uapi/linux/rkisp1-config.h
> @@ -996,4 +996,501 @@ struct rkisp1_stat_buffer {
> struct rkisp1_cif_isp_stat params;
> };
>
> +/*---------- PART3: Extensible Configuration Parameters ------------*/
> +
> +/**
> + * enum rkisp1_ext_params_block_type - RkISP1 extensible params block type
> + *
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS: Black level subtraction
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC: Defect pixel cluster correction
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_SDG: Sensor de-gamma
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_GAINS: Auto white balance gains
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_FLT: ISP filtering
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_BDM: Bayer de-mosaic
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_CTK: Cross-talk correction
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_GOC: Gamma out correction
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF: De-noise pre-filter
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF_STRENGTH: De-noise pre-filter strength
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_CPROC: Color processing
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_IE: Image effects
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_LSC: Lens shading correction
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_MEAS: Auto white balance statistics
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_HST_MEAS: Histogram statistics
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_AEC_MEAS: Auto exposure statistics
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_AFC_MEAS: Auto-focus statistics
> + * @RKISP1_EXT_PARAMS_BLOCK_TYPE_SENTINEL: Sentinel
> + */
> +enum rkisp1_ext_params_block_type {
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_SDG,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_GAINS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_FLT,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_BDM,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_CTK,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_GOC,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF_STRENGTH,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_CPROC,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_IE,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_LSC,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_MEAS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_HST_MEAS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_AEC_MEAS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_AFC_MEAS,
> + RKISP1_EXT_PARAMS_BLOCK_TYPE_SENTINEL,
> +};
> +
> +/**
> + * enum rkisp1_ext_params_block_enable - RkISP1 extensible parameter block
> + * enable flags
> + *
> + * @RKISP1_EXT_PARAMS_BLOCK_DISABLE: Disable the HW block
> + * @RKISP1_EXT_PARAMS_BLOCK_ENABLE: Enable the HW block
> + */
> +enum rkisp1_ext_params_block_enable {
> + RKISP1_EXT_PARAMS_BLOCK_DISABLE,
> + RKISP1_EXT_PARAMS_BLOCK_ENABLE,
> +};
> +
> +/**
> + * struct rkisp1_ext_params_block_header - RkISP1 extensible parameter block
> + * header
> + *
> + * This structure represents the common part of all the ISP configuration
> + * blocks. Each parameters block shall embed an instance of this structure type
> + * as its first member, followed by the block-specific configuration data. The
> + * driver inspects this common header to discern the block type and its size and
> + * properly handle the block content by casting it to the correct block-specific
> + * type.
> + *
> + * The @type field is one of the values enumerated by
> + * :c:type:`rkisp1_ext_params_block_type` and specifies how the data should be
> + * interpreted by the driver. The @size field specifies the size of the
> + * parameters block and is used by the driver for validation purposes.
> + *
> + * The @enable field specifies the ISP block enablement state. The possible
> + * enablement states are enumerated by :c:type:`rkisp1_ext_params_block_enable`.
> + * When userspace needs to configure and enable an ISP block it shall fully
> + * populate the block configuration and the @enable flag shall be set to
> + * RKISP1_EXT_PARAMS_BLOCK_ENABLE. When userspace simply wants to disable the
> + * ISP block the @enable flag shall be set to RKISP1_EXT_PARAMS_BLOCK_DISABLE.
> + * The driver ignores the rest of the block configuration structure in this
> + * case.
> + *
> + * If a new configuration of an ISP block has to be applied userspace shall
> + * fully populate the ISP block configuration and set the @enable flag to
> + * RKISP1_EXT_PARAMS_BLOCK_ENABLE.
> + *
> + * Userspace is responsible for correctly populating the parameters block header
> + * fields (@type, @enable and @size) and correctly populate the block-specific
s/correctly populate //
> + * parameters.
> + *
> + * For example:
> + *
> + * .. code-block:: c
> + *
> + * void populate_bls(struct rkisp1_ext_params_block_header *block) {
> + * struct rkisp1_ext_params_bls_config *bls =
> + * (struct rkisp1_ext_params_bls_config *)block;
> + *
> + * block->header.type = RKISP1_EXT_PARAMS_BLOCK_ID_BLS;
> + * block->header.enable = RKISP1_EXT_PARAMS_BLOCK_ENABLE;
> + * block->header.size = sizeof(struct rkisp1_ext_params_bls_config);
"block" is already the header, so
block->type = RKISP1_EXT_PARAMS_BLOCK_ID_BLS;
block->enable = RKISP1_EXT_PARAMS_BLOCK_ENABLE;
block->size = sizeof(struct rkisp1_ext_params_bls_config);
However I would write
bls->header.type = RKISP1_EXT_PARAMS_BLOCK_ID_BLS;
bls->header.enable = RKISP1_EXT_PARAMS_BLOCK_ENABLE;
bls->header.size = sizeof(*bls);
Passing the struct type as an argument to sizeof() seems error-prone,
and using the same variable name on the left-hand side of -> and as the
sizeof() parameter improves readability and should make copy&paste
errors more apparent (and likely result in them being caught by the
compiler).
> + *
> + * bls->bls_config.enable_auto = 0;
> + * bls->bls_config.fixed_val.r = blackLevelRed_;
> + * bls->bls_config.fixed_val.gr = blackLevelGreenR_;
> + * bls->bls_config.fixed_val.gb = blackLevelGreenB_;
> + * bls->bls_config.fixed_val.b = blackLevelBlue_;
> + * }
> + *
> + * @type: The parameters block type, see
> + * :c:type:`rkisp1_ext_params_block_type`
> + * @enable: The block enable flag, see
> + * :c:type:`rkisp1_ext_params_block_enable`
> + * @size: Size (in bytes) of the parameters block, including this header
> + */
> +struct rkisp1_ext_params_block_header {
> + __u32 type;
> + __u32 enable;
> + __u32 size;
Would it be useful to use __u16 for all those fields ? The size of the
header would be reduced from 16 to 8 bytes. We will never have more than
64k blocks or enable states :-) I really don't expect any block size of
more than 64kB for this ISP, but if that's a concern, the size could
remain a __u32.
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_bls_config - RkISP1 extensible params BLS config
> + *
> + * RkISP1 extensible parameters Black Level Subtraction configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @bls_config: Black Level Subtraction configuration, see
> + * :c:type:`rkisp1_cif_isp_bls_config`
> + */
> +struct rkisp1_ext_params_bls_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_bls_config bls_config;
All the blocks have a similar structure, with a header and a config
structure using the existing parameters structure definitions. I think I
would rename the "*_config" field names to just "config", adding the
prefix here makes lines longer and doesn't improve readability. Compare
the existing example above
bls->bls_config.enable_auto = 0;
bls->bls_config.fixed_val.r = blackLevelRed_;
bls->bls_config.fixed_val.gr = blackLevelGreenR_;
bls->bls_config.fixed_val.gb = blackLevelGreenB_;
bls->bls_config.fixed_val.b = blackLevelBlue_;
with
bls->config.enable_auto = 0;
bls->config.fixed_val.r = blackLevelRed_;
bls->config.fixed_val.gr = blackLevelGreenR_;
bls->config.fixed_val.gb = blackLevelGreenB_;
bls->config.fixed_val.b = blackLevelBlue_;
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_dpcc_config - RkISP1 extensible params DPCC config
> + *
> + * RkISP1 extensible parameters Defective Pixel Cluster Correction configuration
> + * block. Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @dpcc_config: Defective Pixel Cluster Correction configuration, see
> + * :c:type:`rkisp1_cif_isp_dpcc_config`
> + */
> +struct rkisp1_ext_params_dpcc_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_dpcc_config dpcc_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_sdg_config - RkISP1 extensible params SDG config
> + *
> + * RkISP1 extensible parameters Sensor Degamma configuration block. Identified
> + * by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_SDG`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @sdg_config: Sensor Degamma configuration, see
> + * :c:type:`rkisp1_cif_isp_sdg_config`
> + */
> +struct rkisp1_ext_params_sdg_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_sdg_config sdg_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_lsc_config - RkISP1 extensible params LSC config
> + *
> + * RkISP1 extensible parameters Lens Shading Correction configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_LSC`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @lsc_config: Lens Shading Correction configuration, see
> + * :c:type:`rkisp1_cif_isp_lsc_config`
> + */
> +struct rkisp1_ext_params_lsc_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_lsc_config lsc_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_awb_gain_config - RkISP1 extensible params AWB
> + * gain config
> + *
> + * RkISP1 extensible parameters Auto-White Balance Gains configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_GAINS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @awb_config: Auto-White Balance Gains configuration, see
> + * :c:type:`rkisp1_cif_isp_awb_gain_config`
> + */
> +struct rkisp1_ext_params_awb_gain_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_awb_gain_config awb_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_flt_config - RkISP1 extensible params FLT config
> + *
> + * RkISP1 extensible parameters Filter configuration block. Identified by
> + * :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_FLT`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @flt_config: Filter configuration, see
> + * :c:type:`rkisp1_cif_isp_flt_config`
> + */
> +struct rkisp1_ext_params_flt_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_flt_config flt_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_bdm_config - RkISP1 extensible params BDM config
> + *
> + * RkISP1 extensible parameters Demosaicing configuration block. Identified by
> + * :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_BDM`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @bdm_config: Demosaicing configuration, see
> + * :c:type:`rkisp1_cif_isp_bdm_config`
> + */
> +struct rkisp1_ext_params_bdm_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_bdm_config bdm_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_ctk_config - RkISP1 extensible params CTK config
> + *
> + * RkISP1 extensible parameters Cross-Talk configuration block. Identified by
> + * :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_CTK`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @ctk_config: Cross-Talk configuration, see
> + * :c:type:`rkisp1_cif_isp_ctk_config`
> + */
> +struct rkisp1_ext_params_ctk_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_ctk_config ctk_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_goc_config - RkISP1 extensible params GOC config
> + *
> + * RkISP1 extensible parameters Gamma-Out configuration block. Identified by
> + * :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_GOC`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @goc_config: Gamma-Out configuration, see
> + * :c:type:`rkisp1_cif_isp_goc_config`
> + */
> +struct rkisp1_ext_params_goc_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_goc_config goc_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_dpf_config - RkISP1 extensible params DPF config
> + *
> + * RkISP1 extensible parameters De-noise Pre-Filter configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @dpf_config: De-noise Pre-Filter configuration, see
> + * :c:type:`rkisp1_cif_isp_dpf_config`
> + */
> +struct rkisp1_ext_params_dpf_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_dpf_config dpf_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_dpf_strength_config - RkISP1 extensible params DPF
> + * strength config
> + *
> + * RkISP1 extensible parameters De-noise Pre-Filter strength configuration
> + * block. Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_DPF_STRENGTH`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @dpf_strength_config: De-noise Pre-Filter strength configuration, see
> + * :c:type:`rkisp1_cif_isp_dpf_strength_config`
> + */
> +struct rkisp1_ext_params_dpf_strength_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_dpf_strength_config dpf_strength_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_cproc_config - RkISP1 extensible params CPROC config
> + *
> + * RkISP1 extensible parameters Color Processing configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_CPROC`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @cproc_config: Color processing configuration, see
> + * :c:type:`rkisp1_cif_isp_cproc_config`
> + */
> +struct rkisp1_ext_params_cproc_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_cproc_config cproc_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_ie_config - RkISP1 extensible params IE config
> + *
> + * RkISP1 extensible parameters Image Effect configuration block. Identified by
> + * :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_IE`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @ie_config: Image Effect configuration, see
> + * :c:type:`rkisp1_cif_isp_ie_config`
> + */
> +struct rkisp1_ext_params_ie_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_ie_config ie_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_awb_meas_config - RkISP1 extensible params AWB
> + * Meas config
> + *
> + * RkISP1 extensible parameters Auto-White Balance Measurement configuration
> + * block. Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_AWB_MEAS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @awb_meas_config: Auto-White Balance measure configuration, see
> + * :c:type:`rkisp1_cif_isp_awb_meas_config`
> + */
> +struct rkisp1_ext_params_awb_meas_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_awb_meas_config awb_meas_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_hst_config - RkISP1 extensible params Histogram config
> + *
> + * RkISP1 extensible parameters Histogram statistics configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_HST_MEAS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @hst_config: Histogram statistics configuration, see
> + * :c:type:`rkisp1_cif_isp_hst_config`
> + */
> +struct rkisp1_ext_params_hst_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_hst_config hst_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_aec_config - RkISP1 extensible params AEC config
> + *
> + * RkISP1 extensible parameters Auto-Exposure statistics configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_AEC_MEAS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @aec_config: Auto-Exposure statistics configuration, see
> + * :c:type:`rkisp1_cif_isp_aec_config`
> + */
> +struct rkisp1_ext_params_aec_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_aec_config aec_config;
> +} __attribute__((aligned(8)));
> +
> +/**
> + * struct rkisp1_ext_params_afc_config - RkISP1 extensible params AFC config
> + *
> + * RkISP1 extensible parameters Auto-Focus statistics configuration block.
> + * Identified by :c:type:`RKISP1_EXT_PARAMS_BLOCK_TYPE_AFC_MEAS`.
> + *
> + * @header: The RkISP1 extensible parameters header, see
> + * :c:type:`rkisp1_ext_params_block_header`
> + * @afc_config: Auto-Focus statistics configuration, see
> + * :c:type:`rkisp1_cif_isp_afc_config`
> + */
> +struct rkisp1_ext_params_afc_config {
> + struct rkisp1_ext_params_block_header header;
> + struct rkisp1_cif_isp_afc_config afc_config;
> +} __attribute__((aligned(8)));
> +
> +#define RKISP1_EXT_PARAMS_MAX_SIZE \
> + (sizeof(struct rkisp1_ext_params_bls_config) +\
> + sizeof(struct rkisp1_ext_params_dpcc_config) +\
> + sizeof(struct rkisp1_ext_params_sdg_config) +\
> + sizeof(struct rkisp1_ext_params_lsc_config) +\
> + sizeof(struct rkisp1_ext_params_awb_gain_config) +\
> + sizeof(struct rkisp1_ext_params_flt_config) +\
> + sizeof(struct rkisp1_ext_params_bdm_config) +\
> + sizeof(struct rkisp1_ext_params_ctk_config) +\
> + sizeof(struct rkisp1_ext_params_goc_config) +\
> + sizeof(struct rkisp1_ext_params_dpf_config) +\
> + sizeof(struct rkisp1_ext_params_dpf_strength_config) +\
> + sizeof(struct rkisp1_ext_params_cproc_config) +\
> + sizeof(struct rkisp1_ext_params_ie_config) +\
> + sizeof(struct rkisp1_ext_params_awb_meas_config) +\
> + sizeof(struct rkisp1_ext_params_hst_config) +\
> + sizeof(struct rkisp1_ext_params_aec_config) +\
> + sizeof(struct rkisp1_ext_params_afc_config))
> +
> +/**
> + * enum rksip1_ext_param_buffer_version - RkISP1 extensible parameters version
> + *
> + * @RKISP1_EXT_PARAM_BUFFER_V1: First version of RkISP1 extensible parameters
> + */
> +enum rksip1_ext_param_buffer_version {
> + RKISP1_EXT_PARAM_BUFFER_V1 = 1,
> +};
> +
> +/**
> + * struct rkisp1_ext_params_cfg - RkISP1 extensible parameters configuration
> + *
> + * This struct contains the configuration parameters of the RkISP1 ISP
> + * algorithms, serialized by userspace into a data buffer. Each configuration
> + * parameter block is represented by a block-specific structure which contains a
> + * :c:type:`rkisp1_ext_params_block_header` entry as first member. Userspace
> + * populates the @data buffer with configuration parameters for the blocks that
> + * it intends to configure. As a consequence, the data buffer effective size
> + * changes according to the number of ISP blocks that userspace intends to
> + * configure and is set by userspace in the @total_size field.
> + *
> + * The parameters buffer is versioned by the @version field to allow modifying
> + * and extending its definition. Userspace shall populate the @version field to
> + * inform the driver about the version it intends to use. The driver will parse
> + * and handle the @data buffer according to the data layout specific to the
> + * indicated version and return an error if the desired version is not
> + * supported.
> + *
> + * For each ISP block that userspace wants to configure, a block-specific
> + * structure is appended to the @data buffer, one after the other without gaps
> + * in between nor overlaps. Userspace shall populate the @total_size field with
> + * the effective size, in bytes, of the @data buffer.
> + *
> + * The expected memory layout of the parameters buffer is::
> + *
> + * +-------------------- struct rkisp1_ext_params_cfg -------------------+
> + * | version = RKISP_EXT_PARAMS_BUFFER_V1; |
> + * | total_size = sizeof(struct rkisp1_ext_params_bls_config) |
> + * | sizeof(struct rkisp1_ext_params_dpcc_config); |
> + * | +------------------------- data ---------------------------------+ |
> + * | | +------------- struct rkisp1_ext_params_bls_config -----------+ | |
> + * | | | +-------- struct rkisp1_ext_params_block_header ---------+ | | |
> + * | | | | type = RKISP1_EXT_PARAMS_BLOCK_TYPE_BLS; | | | |
> + * | | | | enable = RKISP1_EXT_PARAMS_BLOCK_ENABLE; | | | |
> + * | | | | size = sizeof(struct rkisp1_ext_params_bls_config); | | | |
> + * | | | +---------------------------------------------------------+ | | |
> + * | | | +---------- struct rkisp1_cif_isp_bls_config -------------+ | | |
> + * | | | | enable_auto = 0; | | | |
> + * | | | | fixed_val.r = 256; | | | |
> + * | | | | fixed_val.gr = 256; | | | |
> + * | | | | fixed_val.gb = 256; | | | |
> + * | | | | fixed_val.b = 256; | | | |
> + * | | | +---------------------------------------------------------+ | | |
> + * | | +------------ struct rkisp1_ext_params_dpcc_config -----------+ | |
> + * | | | +-------- struct rkisp1_ext_params_block_header ---------+ | | |
> + * | | | | type = RKISP1_EXT_PARAMS_BLOCK_TYPE_DPCC; | | | |
> + * | | | | enable = RKISP1_EXT_PARAMS_BLOCK_ENABLE; | | | |
> + * | | | | size = sizeof(struct rkisp1_ext_params_dpcc_config); | | | |
> + * | | | +---------------------------------------------------------+ | | |
> + * | | | +---------- struct rkisp1_cif_isp_dpcc_config ------------+ | | |
> + * | | | | mode = RKISP1_CIF_ISP_DPCC_MODE_STAGE1_ENABLE; | | | |
> + * | | | | output_mode = | | | |
> + * | | | | RKISP1_CIF_ISP_DPCC_OUTPUT_MODE_STAGE1_INCL_G_CENTER; | | | |
> + * | | | | set_use = ... ; | | | |
> + * | | | | ... = ... ; | | | |
> + * | | | +---------------------------------------------------------+ | | |
> + * | | +-------------------------------------------------------------+ | |
> + * | +-----------------------------------------------------------------+ |
> + * +---------------------------------------------------------------------+
> + *
> + * @version: The RkISP1 extensible parameters buffer version, see
> + * :c:type:`rksip1_ext_param_buffer_version`
> + * @total_size: The RkISP1 configuration data effective size, excluding this
> + * header
> + * @data: The RkISP1 extensible configuration data blocks
> + */
> +struct rkisp1_ext_params_cfg {
> + __u32 version;
> + __u32 total_size;
> + __u8 data[RKISP1_EXT_PARAMS_MAX_SIZE];
> +};
> +
> #endif /* _UAPI_RKISP1_CONFIG_H */
--
Regards,
Laurent Pinchart
