52  * Constants for ratio calculation
302  * @ratio: Structure for ratio parameters.
307 			      const struct resizer_ratio *ratio)  in resizer_set_ratio()  argument
315 	rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT)  in resizer_set_ratio()
317 	rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT)  in resizer_set_ratio()
322 	if (ratio->horz > MID_RESIZE_VALUE)  in resizer_set_ratio()
328 	if (ratio->vert > MID_RESIZE_VALUE)  in resizer_set_ratio()
680  * @ratio : return calculated ratios
684  * has a fixed number of phases that depend on the resizing ratio. As the ratio
688  * The input/output/ratio relationship is given by the OMAP34xx TRM:
703  * we need to compute the highest resizing ratio that satisfies the following
715  * expression of the last inequality. The highest resizing ratio value will be
716  * achieved when b is equal to its maximum value of 255. That resizing ratio
733  * the ratio, depends on the ratio, we start with the 4-tap mode equations to
734  * compute an approximation of the ratio, and switch to the 7-tap mode equations
735  * if the approximation is higher than the ratio threshold.
737  * As the 7-tap mode equations will return a ratio smaller than or equal to the
738  * 4-tap mode equations, the resulting ratio could become lower than or equal to
739  * the ratio threshold. This 'equations loop' isn't an issue as long as the
741  * 4-tap mode equations ensure that, in case of values resulting in a 'ratio
742  * loop', the smallest of the ratio values will be used, never exceeding the
763  * the maximum value guarantees that the ratio value will never be smaller than
765  * ratio will thus result in a resizing factor slightly larger than the
772  * on the vertical resizing ratio.  Fortunately, the output height doesn't
773  * depend on the horizontal resizing ratio. We can then start by computing the
774  * output height and the vertical ratio, and then move to computing the output
775  * width and the horizontal ratio.
780 				struct resizer_ratio *ratio)  in resizer_calc_ratios()  argument
797 	 * compute the vertical resizing ratio.  in resizer_calc_ratios()
805 	ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv)  in resizer_calc_ratios()
807 	if (ratio->vert > MID_RESIZE_VALUE)  in resizer_calc_ratios()
808 		ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv)  in resizer_calc_ratios()
810 	ratio->vert = clamp_t(unsigned int, ratio->vert,  in resizer_calc_ratios()
813 	if (ratio->vert <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
814 		upscaled_height = (output->height - 1) * ratio->vert  in resizer_calc_ratios()
818 		upscaled_height = (output->height - 1) * ratio->vert  in resizer_calc_ratios()
825 	 * capabilities. The maximum depends on the vertical resizing ratio.  in resizer_calc_ratios()
830 	if (ratio->vert <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
871 	width_alignment = ratio->vert < 256 ? 8 : 2;  in resizer_calc_ratios()
876 	ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph)  in resizer_calc_ratios()
878 	if (ratio->horz > MID_RESIZE_VALUE)  in resizer_calc_ratios()
879 		ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph)  in resizer_calc_ratios()
881 	ratio->horz = clamp_t(unsigned int, ratio->horz,  in resizer_calc_ratios()
884 	if (ratio->horz <= MID_RESIZE_VALUE) {  in resizer_calc_ratios()
885 		upscaled_width = (output->width - 1) * ratio->horz  in resizer_calc_ratios()
889 		upscaled_width = (output->width - 1) * ratio->horz  in resizer_calc_ratios()
912 	resizer_set_ratio(res, &res->ratio);  in resizer_set_crop_params()
915 	if (res->ratio.horz >= RESIZE_DIVISOR)  in resizer_set_crop_params()
1188 	/* Crop rectangle is constrained by the output size so that zoom ratio  in resizer_try_crop()
1229 	struct resizer_ratio ratio;  in resizer_get_selection()  local
1247 		resizer_calc_ratios(res, &sel->r, format_source, &ratio);  in resizer_get_selection()
1252 		resizer_calc_ratios(res, &sel->r, format_source, &ratio);  in resizer_get_selection()
1283 	struct resizer_ratio ratio;  in resizer_set_selection()  local
1311 	resizer_calc_ratios(res, &sel->r, &format_source, &ratio);  in resizer_set_selection()
1334 	res->ratio = ratio;  in resizer_set_selection()
1379 	struct resizer_ratio ratio;  in resizer_try_format()  local
1399 		resizer_calc_ratios(res, &crop, fmt, &ratio);  in resizer_try_format()
1533 				       &res->ratio);  in resizer_set_format()