52  * Constants for ratio calculation
305  * @ratio: Structure for ratio parameters.
310 			      const struct resizer_ratio *ratio)  in resizer_set_ratio()  argument
318 	rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT)  in resizer_set_ratio()
320 	rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT)  in resizer_set_ratio()
325 	if (ratio->horz > MID_RESIZE_VALUE)  in resizer_set_ratio()
331 	if (ratio->vert > MID_RESIZE_VALUE)  in resizer_set_ratio()
683  * @ratio : return calculated ratios
687  * has a fixed number of phases that depend on the resizing ratio. As the ratio
691  * The input/output/ratio relationship is given by the OMAP34xx TRM:
706  * we need to compute the highest resizing ratio that satisfies the following
718  * expression of the last inequality. The highest resizing ratio value will be
719  * achieved when b is equal to its maximum value of 255. That resizing ratio
736  * the ratio, depends on the ratio, we start with the 4-tap mode equations to
737  * compute an approximation of the ratio, and switch to the 7-tap mode equations
738  * if the approximation is higher than the ratio threshold.
740  * As the 7-tap mode equations will return a ratio smaller than or equal to the
741  * 4-tap mode equations, the resulting ratio could become lower than or equal to
742  * the ratio threshold. This 'equations loop' isn't an issue as long as the
744  * 4-tap mode equations ensure that, in case of values resulting in a 'ratio
745  * loop', the smallest of the ratio values will be used, never exceeding the
766  * the maximum value guarantees that the ratio value will never be smaller than
768  * ratio will thus result in a resizing factor slightly larger than the
775  * on the vertical resizing ratio.  Fortunately, the output height doesn't
776  * depend on the horizontal resizing ratio. We can then start by computing the
777  * output height and the vertical ratio, and then move to computing the output
778  * width and the horizontal ratio.
783 				struct resizer_ratio *ratio)  in resizer_calc_ratios()  argument
800 	 * compute the vertical resizing ratio.  in resizer_calc_ratios()
808 	ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv)  in resizer_calc_ratios()
810 	if (ratio->vert > MID_RESIZE_VALUE)  in resizer_calc_ratios()
811 		ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv)  in resizer_calc_ratios()
813 	ratio->vert = clamp_t(unsigned int, ratio->vert,  in resizer_calc_ratios()
816 	if (ratio->vert <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
817 		upscaled_height = (output->height - 1) * ratio->vert  in resizer_calc_ratios()
821 		upscaled_height = (output->height - 1) * ratio->vert  in resizer_calc_ratios()
828 	 * capabilities. The maximum depends on the vertical resizing ratio.  in resizer_calc_ratios()
833 	if (ratio->vert <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
874 	width_alignment = ratio->vert < 256 ? 8 : 2;  in resizer_calc_ratios()
879 	ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph)  in resizer_calc_ratios()
881 	if (ratio->horz > MID_RESIZE_VALUE)  in resizer_calc_ratios()
882 		ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph)  in resizer_calc_ratios()
884 	ratio->horz = clamp_t(unsigned int, ratio->horz,  in resizer_calc_ratios()
887 	if (ratio->horz <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
888 		upscaled_width = (output->width - 1) * ratio->horz  in resizer_calc_ratios()
892 		upscaled_width = (output->width - 1) * ratio->horz  in resizer_calc_ratios()
915 	resizer_set_ratio(res, &res->ratio);  in resizer_set_crop_params()
918 	if (res->ratio.horz >= RESIZE_DIVISOR)  in resizer_set_crop_params()
1191 	/* Crop rectangle is constrained by the output size so that zoom ratio  in resizer_try_crop()
1232 	struct resizer_ratio ratio;  in resizer_get_selection()  local
1250 		resizer_calc_ratios(res, &sel->r, format_source, &ratio);  in resizer_get_selection()
1255 		resizer_calc_ratios(res, &sel->r, format_source, &ratio);  in resizer_get_selection()
1286 	struct resizer_ratio ratio;  in resizer_set_selection()  local
1314 	resizer_calc_ratios(res, &sel->r, &format_source, &ratio);  in resizer_set_selection()
1338 	res->ratio = ratio;  in resizer_set_selection()
1384 	struct resizer_ratio ratio;  in resizer_try_format()  local
1405 		resizer_calc_ratios(res, &crop, fmt, &ratio);  in resizer_try_format()
1541 				       &res->ratio);  in resizer_set_format()