diff options
Diffstat (limited to 'drivers/staging/media')
4 files changed, 51 insertions, 78 deletions
diff --git a/drivers/staging/media/atomisp/pci/camera/pipe/interface/ia_css_pipe_binarydesc.h b/drivers/staging/media/atomisp/pci/camera/pipe/interface/ia_css_pipe_binarydesc.h index 965cfda50707..e42eeaeb3ee4 100644 --- a/drivers/staging/media/atomisp/pci/camera/pipe/interface/ia_css_pipe_binarydesc.h +++ b/drivers/staging/media/atomisp/pci/camera/pipe/interface/ia_css_pipe_binarydesc.h @@ -16,6 +16,8 @@ #ifndef __IA_CSS_PIPE_BINARYDESC_H__ #define __IA_CSS_PIPE_BINARYDESC_H__ +#include <linux/math.h> + #include <ia_css_types.h> /* ia_css_pipe */ #include <ia_css_frame_public.h> /* ia_css_frame_info */ #include <ia_css_binary.h> /* ia_css_binary_descr */ @@ -56,17 +58,12 @@ void ia_css_pipe_get_vfpp_binarydesc( * * @param[in] bds_factor: The bayer downscaling factor. * (= The bds_factor member in the sh_css_bds_factor structure.) - * @param[out] bds_factor_numerator: The numerator of the bayer downscaling factor. - * (= The numerator member in the sh_css_bds_factor structure.) - * @param[out] bds_factor_denominator: The denominator of the bayer downscaling factor. - * (= The denominator member in the sh_css_bds_factor structure.) + * @param[out] bds: The rational fraction of the bayer downscaling factor. + * (= The respective member in the sh_css_bds_factor structure.) * @return 0 or error code upon error. * */ -int sh_css_bds_factor_get_numerator_denominator( - unsigned int bds_factor, - unsigned int *bds_factor_numerator, - unsigned int *bds_factor_denominator); +int sh_css_bds_factor_get_fract(unsigned int bds_factor, struct u32_fract *bds); /* @brief Get a binary descriptor for preview stage. * diff --git a/drivers/staging/media/atomisp/pci/camera/pipe/src/pipe_binarydesc.c b/drivers/staging/media/atomisp/pci/camera/pipe/src/pipe_binarydesc.c index 7dd0e4a53c8b..06664ce75b60 100644 --- a/drivers/staging/media/atomisp/pci/camera/pipe/src/pipe_binarydesc.c +++ b/drivers/staging/media/atomisp/pci/camera/pipe/src/pipe_binarydesc.c @@ -13,6 +13,9 @@ * more details. */ +#include <linux/kernel.h> +#include <linux/math.h> + #include "ia_css_pipe_binarydesc.h" #include "ia_css_frame_format.h" #include "ia_css_pipe.h" @@ -23,7 +26,6 @@ #include <assert_support.h> /* HRT_GDC_N */ #include "gdc_device.h" -#include <linux/kernel.h> /* This module provides a binary descriptions to used to find a binary. Since, * every stage is associated with a binary, it implicity helps stage @@ -126,40 +128,29 @@ void ia_css_pipe_get_vfpp_binarydesc( IA_CSS_LEAVE_PRIVATE(""); } -static struct sh_css_bds_factor bds_factors_list[] = { - {1, 1, SH_CSS_BDS_FACTOR_1_00}, - {5, 4, SH_CSS_BDS_FACTOR_1_25}, - {3, 2, SH_CSS_BDS_FACTOR_1_50}, - {2, 1, SH_CSS_BDS_FACTOR_2_00}, - {9, 4, SH_CSS_BDS_FACTOR_2_25}, - {5, 2, SH_CSS_BDS_FACTOR_2_50}, - {3, 1, SH_CSS_BDS_FACTOR_3_00}, - {4, 1, SH_CSS_BDS_FACTOR_4_00}, - {9, 2, SH_CSS_BDS_FACTOR_4_50}, - {5, 1, SH_CSS_BDS_FACTOR_5_00}, - {6, 1, SH_CSS_BDS_FACTOR_6_00}, - {8, 1, SH_CSS_BDS_FACTOR_8_00} +static struct u32_fract bds_factors_list[] = { + [SH_CSS_BDS_FACTOR_1_00] = {1, 1}, + [SH_CSS_BDS_FACTOR_1_25] = {5, 4}, + [SH_CSS_BDS_FACTOR_1_50] = {3, 2}, + [SH_CSS_BDS_FACTOR_2_00] = {2, 1}, + [SH_CSS_BDS_FACTOR_2_25] = {9, 4}, + [SH_CSS_BDS_FACTOR_2_50] = {5, 2}, + [SH_CSS_BDS_FACTOR_3_00] = {3, 1}, + [SH_CSS_BDS_FACTOR_4_00] = {4, 1}, + [SH_CSS_BDS_FACTOR_4_50] = {9, 2}, + [SH_CSS_BDS_FACTOR_5_00] = {5, 1}, + [SH_CSS_BDS_FACTOR_6_00] = {6, 1}, + [SH_CSS_BDS_FACTOR_8_00] = {8, 1}, }; -int sh_css_bds_factor_get_numerator_denominator( - unsigned int bds_factor, - unsigned int *bds_factor_numerator, - unsigned int *bds_factor_denominator) +int sh_css_bds_factor_get_fract(unsigned int bds_factor, struct u32_fract *bds) { - unsigned int i; - - /* Loop over all bds factors until a match is found */ - for (i = 0; i < ARRAY_SIZE(bds_factors_list); i++) { - if (bds_factors_list[i].bds_factor == bds_factor) { - *bds_factor_numerator = bds_factors_list[i].numerator; - *bds_factor_denominator = bds_factors_list[i].denominator; - return 0; - } - } + /* Throw an error since bds_factor cannot be found in bds_factors_list */ + if (bds_factor >= ARRAY_SIZE(bds_factors_list)) + return -EINVAL; - /* Throw an error since bds_factor cannot be found - in bds_factors_list */ - return -EINVAL; + *bds = bds_factors_list[bds_factor]; + return 0; } int binarydesc_calculate_bds_factor( @@ -194,7 +185,7 @@ int binarydesc_calculate_bds_factor( (out_h * num / den <= in_h); if (cond) { - *bds_factor = bds_factors_list[i].bds_factor; + *bds_factor = i; return 0; } } diff --git a/drivers/staging/media/atomisp/pci/runtime/binary/src/binary.c b/drivers/staging/media/atomisp/pci/runtime/binary/src/binary.c index 406ed5fb4c6a..768da86b8c2c 100644 --- a/drivers/staging/media/atomisp/pci/runtime/binary/src/binary.c +++ b/drivers/staging/media/atomisp/pci/runtime/binary/src/binary.c @@ -13,6 +13,8 @@ * more details. */ +#include <linux/math.h> + #include <math_support.h> #include <gdc_device.h> /* HR_GDC_N */ @@ -128,16 +130,8 @@ ia_css_binary_compute_shading_table_bayer_origin( { int err; - /* Numerator and denominator of the fixed bayer downscaling factor. - (numerator >= denominator) */ - unsigned int bds_num, bds_den; - - /* Horizontal/Vertical ratio of bayer scaling - between input area and output area. */ - unsigned int bs_hor_ratio_in; - unsigned int bs_hor_ratio_out; - unsigned int bs_ver_ratio_in; - unsigned int bs_ver_ratio_out; + /* Rational fraction of the fixed bayer downscaling factor. */ + struct u32_fract bds; /* Left padding set by InputFormatter. */ unsigned int left_padding_bqs; /* in bqs */ @@ -158,19 +152,11 @@ ia_css_binary_compute_shading_table_bayer_origin( unsigned int bad_bqs_on_top_before_bs; /* in bqs */ unsigned int bad_bqs_on_top_after_bs; /* in bqs */ - /* Get the numerator and denominator of bayer downscaling factor. */ - err = sh_css_bds_factor_get_numerator_denominator - (required_bds_factor, &bds_num, &bds_den); + /* Get the rational fraction of bayer downscaling factor. */ + err = sh_css_bds_factor_get_fract(required_bds_factor, &bds); if (err) return err; - /* Set the horizontal/vertical ratio of bayer scaling - between input area and output area. */ - bs_hor_ratio_in = bds_num; - bs_hor_ratio_out = bds_den; - bs_ver_ratio_in = bds_num; - bs_ver_ratio_out = bds_den; - /* Set the left padding set by InputFormatter. (ifmtr.c) */ if (stream_config->left_padding == -1) left_padding_bqs = _ISP_BQS(binary->left_padding); @@ -228,18 +214,18 @@ ia_css_binary_compute_shading_table_bayer_origin( located on the shading table during the shading correction. */ res->sc_bayer_origin_x_bqs_on_shading_table = ((left_padding_adjusted_bqs + bad_bqs_on_left_before_bs) - * bs_hor_ratio_out + bs_hor_ratio_in / 2) / bs_hor_ratio_in + * bds.denominator + bds.numerator / 2) / bds.numerator + bad_bqs_on_left_after_bs; - /* "+ bs_hor_ratio_in/2": rounding for division by bs_hor_ratio_in */ + /* "+ bds.numerator / 2": rounding for division by bds.numerator */ res->sc_bayer_origin_y_bqs_on_shading_table = - (bad_bqs_on_top_before_bs * bs_ver_ratio_out + bs_ver_ratio_in / 2) / bs_ver_ratio_in + (bad_bqs_on_top_before_bs * bds.denominator + bds.numerator / 2) / bds.numerator + bad_bqs_on_top_after_bs; - /* "+ bs_ver_ratio_in/2": rounding for division by bs_ver_ratio_in */ + /* "+ bds.numerator / 2": rounding for division by bds.numerator */ - res->bayer_scale_hor_ratio_in = (uint32_t)bs_hor_ratio_in; - res->bayer_scale_hor_ratio_out = (uint32_t)bs_hor_ratio_out; - res->bayer_scale_ver_ratio_in = (uint32_t)bs_ver_ratio_in; - res->bayer_scale_ver_ratio_out = (uint32_t)bs_ver_ratio_out; + res->bayer_scale_hor_ratio_in = bds.numerator; + res->bayer_scale_hor_ratio_out = bds.denominator; + res->bayer_scale_ver_ratio_in = bds.numerator; + res->bayer_scale_ver_ratio_out = bds.denominator; return err; } diff --git a/drivers/staging/media/atomisp/pci/sh_css_param_shading.c b/drivers/staging/media/atomisp/pci/sh_css_param_shading.c index 41a4c9162319..5b43cc656269 100644 --- a/drivers/staging/media/atomisp/pci/sh_css_param_shading.c +++ b/drivers/staging/media/atomisp/pci/sh_css_param_shading.c @@ -13,6 +13,7 @@ * more details. */ +#include <linux/math.h> #include <linux/slab.h> #include <math_support.h> @@ -239,10 +240,9 @@ prepare_shading_table(const struct ia_css_shading_table *in_table, { unsigned int input_width, input_height, table_width, table_height, i; unsigned int left_padding, top_padding, left_cropping; - unsigned int bds_numerator, bds_denominator; - int right_padding; - struct ia_css_shading_table *result; + struct u32_fract bds; + int right_padding; assert(target_table); assert(binary); @@ -265,17 +265,16 @@ prepare_shading_table(const struct ia_css_shading_table *in_table, left_cropping = (binary->info->sp.pipeline.left_cropping == 0) ? binary->dvs_envelope.width : 2 * ISP_VEC_NELEMS; - sh_css_bds_factor_get_numerator_denominator - (bds_factor, &bds_numerator, &bds_denominator); + sh_css_bds_factor_get_fract(bds_factor, &bds); left_padding = (left_padding + binary->info->sp.pipeline.left_cropping) * - bds_numerator / bds_denominator - + bds.numerator / bds.denominator - binary->info->sp.pipeline.left_cropping; right_padding = (binary->internal_frame_info.res.width - - binary->effective_in_frame_res.width * bds_denominator / - bds_numerator - left_cropping) * bds_numerator / bds_denominator; - top_padding = binary->info->sp.pipeline.top_cropping * bds_numerator / - bds_denominator - + binary->effective_in_frame_res.width * bds.denominator / + bds.numerator - left_cropping) * bds.numerator / bds.denominator; + top_padding = binary->info->sp.pipeline.top_cropping * bds.numerator / + bds.denominator - binary->info->sp.pipeline.top_cropping; /* |