44 static int mtk_jpeg_decide_format(struct mtk_jpeg_dec_param *param)  in mtk_jpeg_decide_format()  argument
46 	param->src_color = (param->sampling_w[0] << 20) |  in mtk_jpeg_decide_format()
47 			   (param->sampling_h[0] << 16) |  in mtk_jpeg_decide_format()
48 			   (param->sampling_w[1] << 12) |  in mtk_jpeg_decide_format()
49 			   (param->sampling_h[1] << 8) |  in mtk_jpeg_decide_format()
50 			   (param->sampling_w[2] << 4) |  in mtk_jpeg_decide_format()
51 			   (param->sampling_h[2]);  in mtk_jpeg_decide_format()
53 	param->uv_brz_w = 0;  in mtk_jpeg_decide_format()
54 	switch (param->src_color) {  in mtk_jpeg_decide_format()
56 		param->uv_brz_w = 1;  in mtk_jpeg_decide_format()
57 		param->dst_fourcc = V4L2_PIX_FMT_YUV422M;  in mtk_jpeg_decide_format()
61 		param->dst_fourcc = V4L2_PIX_FMT_YUV422M;  in mtk_jpeg_decide_format()
65 		param->uv_brz_w = 1;  in mtk_jpeg_decide_format()
66 		param->dst_fourcc = V4L2_PIX_FMT_YUV420M;  in mtk_jpeg_decide_format()
69 		param->dst_fourcc = V4L2_PIX_FMT_YUV420M;  in mtk_jpeg_decide_format()
72 		param->dst_fourcc = V4L2_PIX_FMT_GREY;  in mtk_jpeg_decide_format()
75 		param->dst_fourcc = 0;  in mtk_jpeg_decide_format()
82 static void mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param *param)  in mtk_jpeg_calc_mcu()  argument
87 	factor_w = 2 + param->sampling_w[0];  in mtk_jpeg_calc_mcu()
88 	factor_h = 2 + param->sampling_h[0];  in mtk_jpeg_calc_mcu()
89 	param->mcu_w = (param->pic_w + (1 << factor_w) - 1) >> factor_w;  in mtk_jpeg_calc_mcu()
90 	param->mcu_h = (param->pic_h + (1 << factor_h) - 1) >> factor_h;  in mtk_jpeg_calc_mcu()
91 	param->total_mcu = param->mcu_w * param->mcu_h;  in mtk_jpeg_calc_mcu()
92 	param->unit_num = ((param->pic_w + 7) >> 3) * ((param->pic_h + 7) >> 3);  in mtk_jpeg_calc_mcu()
93 	param->blk_num = 0;  in mtk_jpeg_calc_mcu()
95 		param->blk_comp[i] = 0;  in mtk_jpeg_calc_mcu()
96 		if (i >= param->comp_num)  in mtk_jpeg_calc_mcu()
98 		param->blk_comp[i] = param->sampling_w[i] *  in mtk_jpeg_calc_mcu()
99 				     param->sampling_h[i];  in mtk_jpeg_calc_mcu()
100 		param->blk_num += param->blk_comp[i];  in mtk_jpeg_calc_mcu()
103 	param->membership = 0;  in mtk_jpeg_calc_mcu()
105 		if (i < param->blk_num && comp < param->comp_num) {  in mtk_jpeg_calc_mcu()
109 			param->membership |= tmp << (i * 3);  in mtk_jpeg_calc_mcu()
110 			if (++blk == param->blk_comp[comp]) {  in mtk_jpeg_calc_mcu()
115 			param->membership |=  7 << (i * 3);  in mtk_jpeg_calc_mcu()
120 static void mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param *param)  in mtk_jpeg_calc_dma_group()  argument
124 	if (param->src_color == MTK_JPEG_COLOR_444 &&  in mtk_jpeg_calc_dma_group()
125 	    param->dst_fourcc == V4L2_PIX_FMT_YUV422M)  in mtk_jpeg_calc_dma_group()
127 	else if (param->src_color == MTK_JPEG_COLOR_422V &&  in mtk_jpeg_calc_dma_group()
128 		 param->dst_fourcc == V4L2_PIX_FMT_YUV420M)  in mtk_jpeg_calc_dma_group()
130 	else if (param->src_color == MTK_JPEG_COLOR_422X2 &&  in mtk_jpeg_calc_dma_group()
131 		 param->dst_fourcc == V4L2_PIX_FMT_YUV422M)  in mtk_jpeg_calc_dma_group()
133 	else if (param->src_color == MTK_JPEG_COLOR_400 ||  in mtk_jpeg_calc_dma_group()
134 		 (param->src_color & 0x0FFFF) == 0)  in mtk_jpeg_calc_dma_group()
137 	param->dma_mcu = 1 << factor_mcu;  in mtk_jpeg_calc_dma_group()
138 	param->dma_group = param->mcu_w / param->dma_mcu;  in mtk_jpeg_calc_dma_group()
139 	param->dma_last_mcu = param->mcu_w % param->dma_mcu;  in mtk_jpeg_calc_dma_group()
140 	if (param->dma_last_mcu)  in mtk_jpeg_calc_dma_group()
141 		param->dma_group++;  in mtk_jpeg_calc_dma_group()
143 		param->dma_last_mcu = param->dma_mcu;  in mtk_jpeg_calc_dma_group()
146 static int mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param *param)  in mtk_jpeg_calc_dst_size()  argument
153 	brz_w[1] = param->uv_brz_w;  in mtk_jpeg_calc_dst_size()
156 	for (i = 0; i < param->comp_num; i++) {  in mtk_jpeg_calc_dst_size()
160 		padding_w = param->mcu_w * MTK_JPEG_DCTSIZE *  in mtk_jpeg_calc_dst_size()
161 				param->sampling_w[i];  in mtk_jpeg_calc_dst_size()
163 		param->comp_w[i] = padding_w >> brz_w[i];  in mtk_jpeg_calc_dst_size()
164 		param->comp_w[i] = mtk_jpeg_align(param->comp_w[i],  in mtk_jpeg_calc_dst_size()
166 		param->img_stride[i] = i ? mtk_jpeg_align(param->comp_w[i], 16)  in mtk_jpeg_calc_dst_size()
167 					: mtk_jpeg_align(param->comp_w[i], 32);  in mtk_jpeg_calc_dst_size()
168 		ds_row_h[i] = (MTK_JPEG_DCTSIZE * param->sampling_h[i]);  in mtk_jpeg_calc_dst_size()
170 	param->dec_w = param->img_stride[0];  in mtk_jpeg_calc_dst_size()
171 	param->dec_h = ds_row_h[0] * param->mcu_h;  in mtk_jpeg_calc_dst_size()
175 		param->mem_stride[i] = param->img_stride[i];  in mtk_jpeg_calc_dst_size()
176 		param->comp_size[i] = param->mem_stride[i] * ds_row_h[i] *  in mtk_jpeg_calc_dst_size()
177 				      param->mcu_h;  in mtk_jpeg_calc_dst_size()
180 	param->y_size = param->comp_size[0];  in mtk_jpeg_calc_dst_size()
181 	param->uv_size = param->comp_size[1];  in mtk_jpeg_calc_dst_size()
182 	param->dec_size = param->y_size + (param->uv_size << 1);  in mtk_jpeg_calc_dst_size()
187 int mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param *param)  in mtk_jpeg_dec_fill_param()  argument
189 	if (mtk_jpeg_decide_format(param))  in mtk_jpeg_dec_fill_param()
192 	mtk_jpeg_calc_mcu(param);  in mtk_jpeg_dec_fill_param()
193 	mtk_jpeg_calc_dma_group(param);  in mtk_jpeg_dec_fill_param()
194 	if (mtk_jpeg_calc_dst_size(param))  in mtk_jpeg_dec_fill_param()