1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2016 MediaTek Inc.
4 * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
5 * Rick Chang <rick.chang@mediatek.com>
6 */
7
8 #include <linux/io.h>
9 #include <linux/kernel.h>
10 #include <media/videobuf2-core.h>
11
12 #include "mtk_jpeg_dec_hw.h"
13
14 #define MTK_JPEG_DUNUM_MASK(val) (((val) - 1) & 0x3)
15
16 enum mtk_jpeg_color {
17 MTK_JPEG_COLOR_420 = 0x00221111,
18 MTK_JPEG_COLOR_422 = 0x00211111,
19 MTK_JPEG_COLOR_444 = 0x00111111,
20 MTK_JPEG_COLOR_422V = 0x00121111,
21 MTK_JPEG_COLOR_422X2 = 0x00412121,
22 MTK_JPEG_COLOR_422VX2 = 0x00222121,
23 MTK_JPEG_COLOR_400 = 0x00110000
24 };
25
mtk_jpeg_verify_align(u32 val,int align,u32 reg)26 static inline int mtk_jpeg_verify_align(u32 val, int align, u32 reg)
27 {
28 if (val & (align - 1)) {
29 pr_err("mtk-jpeg: write reg %x without %d align\n", reg, align);
30 return -1;
31 }
32
33 return 0;
34 }
35
mtk_jpeg_decide_format(struct mtk_jpeg_dec_param * param)36 static int mtk_jpeg_decide_format(struct mtk_jpeg_dec_param *param)
37 {
38 param->src_color = (param->sampling_w[0] << 20) |
39 (param->sampling_h[0] << 16) |
40 (param->sampling_w[1] << 12) |
41 (param->sampling_h[1] << 8) |
42 (param->sampling_w[2] << 4) |
43 (param->sampling_h[2]);
44
45 param->uv_brz_w = 0;
46 switch (param->src_color) {
47 case MTK_JPEG_COLOR_444:
48 param->uv_brz_w = 1;
49 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
50 break;
51 case MTK_JPEG_COLOR_422X2:
52 case MTK_JPEG_COLOR_422:
53 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
54 break;
55 case MTK_JPEG_COLOR_422V:
56 case MTK_JPEG_COLOR_422VX2:
57 param->uv_brz_w = 1;
58 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
59 break;
60 case MTK_JPEG_COLOR_420:
61 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
62 break;
63 case MTK_JPEG_COLOR_400:
64 param->dst_fourcc = V4L2_PIX_FMT_GREY;
65 break;
66 default:
67 param->dst_fourcc = 0;
68 return -1;
69 }
70
71 return 0;
72 }
73
mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param * param)74 static void mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param *param)
75 {
76 u32 factor_w, factor_h;
77 u32 i, comp, blk;
78
79 factor_w = 2 + param->sampling_w[0];
80 factor_h = 2 + param->sampling_h[0];
81 param->mcu_w = (param->pic_w + (1 << factor_w) - 1) >> factor_w;
82 param->mcu_h = (param->pic_h + (1 << factor_h) - 1) >> factor_h;
83 param->total_mcu = param->mcu_w * param->mcu_h;
84 param->unit_num = ((param->pic_w + 7) >> 3) * ((param->pic_h + 7) >> 3);
85 param->blk_num = 0;
86 for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
87 param->blk_comp[i] = 0;
88 if (i >= param->comp_num)
89 continue;
90 param->blk_comp[i] = param->sampling_w[i] *
91 param->sampling_h[i];
92 param->blk_num += param->blk_comp[i];
93 }
94
95 param->membership = 0;
96 for (i = 0, blk = 0, comp = 0; i < MTK_JPEG_BLOCK_MAX; i++) {
97 if (i < param->blk_num && comp < param->comp_num) {
98 u32 tmp;
99
100 tmp = (0x04 + (comp & 0x3));
101 param->membership |= tmp << (i * 3);
102 if (++blk == param->blk_comp[comp]) {
103 comp++;
104 blk = 0;
105 }
106 } else {
107 param->membership |= 7 << (i * 3);
108 }
109 }
110 }
111
mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param * param)112 static void mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param *param)
113 {
114 u32 factor_mcu = 3;
115
116 if (param->src_color == MTK_JPEG_COLOR_444 &&
117 param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
118 factor_mcu = 4;
119 else if (param->src_color == MTK_JPEG_COLOR_422V &&
120 param->dst_fourcc == V4L2_PIX_FMT_YUV420M)
121 factor_mcu = 4;
122 else if (param->src_color == MTK_JPEG_COLOR_422X2 &&
123 param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
124 factor_mcu = 2;
125 else if (param->src_color == MTK_JPEG_COLOR_400 ||
126 (param->src_color & 0x0FFFF) == 0)
127 factor_mcu = 4;
128
129 param->dma_mcu = 1 << factor_mcu;
130 param->dma_group = param->mcu_w / param->dma_mcu;
131 param->dma_last_mcu = param->mcu_w % param->dma_mcu;
132 if (param->dma_last_mcu)
133 param->dma_group++;
134 else
135 param->dma_last_mcu = param->dma_mcu;
136 }
137
mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param * param)138 static int mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param *param)
139 {
140 u32 i, padding_w;
141 u32 ds_row_h[3];
142 u32 brz_w[3];
143
144 brz_w[0] = 0;
145 brz_w[1] = param->uv_brz_w;
146 brz_w[2] = brz_w[1];
147
148 for (i = 0; i < param->comp_num; i++) {
149 if (brz_w[i] > 3)
150 return -1;
151
152 padding_w = param->mcu_w * MTK_JPEG_DCTSIZE *
153 param->sampling_w[i];
154 /* output format is 420/422 */
155 param->comp_w[i] = padding_w >> brz_w[i];
156 param->comp_w[i] = round_up(param->comp_w[i],
157 MTK_JPEG_DCTSIZE);
158 param->img_stride[i] = i ? round_up(param->comp_w[i], 16)
159 : round_up(param->comp_w[i], 32);
160 ds_row_h[i] = (MTK_JPEG_DCTSIZE * param->sampling_h[i]);
161 }
162 param->dec_w = param->img_stride[0];
163 param->dec_h = ds_row_h[0] * param->mcu_h;
164
165 for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
166 /* They must be equal in frame mode. */
167 param->mem_stride[i] = param->img_stride[i];
168 param->comp_size[i] = param->mem_stride[i] * ds_row_h[i] *
169 param->mcu_h;
170 }
171
172 param->y_size = param->comp_size[0];
173 param->uv_size = param->comp_size[1];
174 param->dec_size = param->y_size + (param->uv_size << 1);
175
176 return 0;
177 }
178
mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param * param)179 int mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param *param)
180 {
181 if (mtk_jpeg_decide_format(param))
182 return -1;
183
184 mtk_jpeg_calc_mcu(param);
185 mtk_jpeg_calc_dma_group(param);
186 if (mtk_jpeg_calc_dst_size(param))
187 return -2;
188
189 return 0;
190 }
191
mtk_jpeg_dec_get_int_status(void __iomem * base)192 u32 mtk_jpeg_dec_get_int_status(void __iomem *base)
193 {
194 u32 ret;
195
196 ret = readl(base + JPGDEC_REG_INTERRUPT_STATUS) & BIT_INQST_MASK_ALLIRQ;
197 if (ret)
198 writel(ret, base + JPGDEC_REG_INTERRUPT_STATUS);
199
200 return ret;
201 }
202
mtk_jpeg_dec_enum_result(u32 irq_result)203 u32 mtk_jpeg_dec_enum_result(u32 irq_result)
204 {
205 if (irq_result & BIT_INQST_MASK_EOF)
206 return MTK_JPEG_DEC_RESULT_EOF_DONE;
207 if (irq_result & BIT_INQST_MASK_PAUSE)
208 return MTK_JPEG_DEC_RESULT_PAUSE;
209 if (irq_result & BIT_INQST_MASK_UNDERFLOW)
210 return MTK_JPEG_DEC_RESULT_UNDERFLOW;
211 if (irq_result & BIT_INQST_MASK_OVERFLOW)
212 return MTK_JPEG_DEC_RESULT_OVERFLOW;
213 if (irq_result & BIT_INQST_MASK_ERROR_BS)
214 return MTK_JPEG_DEC_RESULT_ERROR_BS;
215
216 return MTK_JPEG_DEC_RESULT_ERROR_UNKNOWN;
217 }
218
mtk_jpeg_dec_start(void __iomem * base)219 void mtk_jpeg_dec_start(void __iomem *base)
220 {
221 writel(0, base + JPGDEC_REG_TRIG);
222 }
223
mtk_jpeg_dec_soft_reset(void __iomem * base)224 static void mtk_jpeg_dec_soft_reset(void __iomem *base)
225 {
226 writel(0x0000FFFF, base + JPGDEC_REG_INTERRUPT_STATUS);
227 writel(0x00, base + JPGDEC_REG_RESET);
228 writel(0x01, base + JPGDEC_REG_RESET);
229 }
230
mtk_jpeg_dec_hard_reset(void __iomem * base)231 static void mtk_jpeg_dec_hard_reset(void __iomem *base)
232 {
233 writel(0x00, base + JPGDEC_REG_RESET);
234 writel(0x10, base + JPGDEC_REG_RESET);
235 }
236
mtk_jpeg_dec_reset(void __iomem * base)237 void mtk_jpeg_dec_reset(void __iomem *base)
238 {
239 mtk_jpeg_dec_soft_reset(base);
240 mtk_jpeg_dec_hard_reset(base);
241 }
242
mtk_jpeg_dec_set_brz_factor(void __iomem * base,u8 yscale_w,u8 yscale_h,u8 uvscale_w,u8 uvscale_h)243 static void mtk_jpeg_dec_set_brz_factor(void __iomem *base, u8 yscale_w,
244 u8 yscale_h, u8 uvscale_w, u8 uvscale_h)
245 {
246 u32 val;
247
248 val = (uvscale_h << 12) | (uvscale_w << 8) |
249 (yscale_h << 4) | yscale_w;
250 writel(val, base + JPGDEC_REG_BRZ_FACTOR);
251 }
252
mtk_jpeg_dec_set_dst_bank0(void __iomem * base,u32 addr_y,u32 addr_u,u32 addr_v)253 static void mtk_jpeg_dec_set_dst_bank0(void __iomem *base, u32 addr_y,
254 u32 addr_u, u32 addr_v)
255 {
256 mtk_jpeg_verify_align(addr_y, 16, JPGDEC_REG_DEST_ADDR0_Y);
257 writel(addr_y, base + JPGDEC_REG_DEST_ADDR0_Y);
258 mtk_jpeg_verify_align(addr_u, 16, JPGDEC_REG_DEST_ADDR0_U);
259 writel(addr_u, base + JPGDEC_REG_DEST_ADDR0_U);
260 mtk_jpeg_verify_align(addr_v, 16, JPGDEC_REG_DEST_ADDR0_V);
261 writel(addr_v, base + JPGDEC_REG_DEST_ADDR0_V);
262 }
263
mtk_jpeg_dec_set_dst_bank1(void __iomem * base,u32 addr_y,u32 addr_u,u32 addr_v)264 static void mtk_jpeg_dec_set_dst_bank1(void __iomem *base, u32 addr_y,
265 u32 addr_u, u32 addr_v)
266 {
267 writel(addr_y, base + JPGDEC_REG_DEST_ADDR1_Y);
268 writel(addr_u, base + JPGDEC_REG_DEST_ADDR1_U);
269 writel(addr_v, base + JPGDEC_REG_DEST_ADDR1_V);
270 }
271
mtk_jpeg_dec_set_mem_stride(void __iomem * base,u32 stride_y,u32 stride_uv)272 static void mtk_jpeg_dec_set_mem_stride(void __iomem *base, u32 stride_y,
273 u32 stride_uv)
274 {
275 writel((stride_y & 0xFFFF), base + JPGDEC_REG_STRIDE_Y);
276 writel((stride_uv & 0xFFFF), base + JPGDEC_REG_STRIDE_UV);
277 }
278
mtk_jpeg_dec_set_img_stride(void __iomem * base,u32 stride_y,u32 stride_uv)279 static void mtk_jpeg_dec_set_img_stride(void __iomem *base, u32 stride_y,
280 u32 stride_uv)
281 {
282 writel((stride_y & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_Y);
283 writel((stride_uv & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_UV);
284 }
285
mtk_jpeg_dec_set_pause_mcu_idx(void __iomem * base,u32 idx)286 static void mtk_jpeg_dec_set_pause_mcu_idx(void __iomem *base, u32 idx)
287 {
288 writel(idx & 0x0003FFFFFF, base + JPGDEC_REG_PAUSE_MCU_NUM);
289 }
290
mtk_jpeg_dec_set_dec_mode(void __iomem * base,u32 mode)291 static void mtk_jpeg_dec_set_dec_mode(void __iomem *base, u32 mode)
292 {
293 writel(mode & 0x03, base + JPGDEC_REG_OPERATION_MODE);
294 }
295
mtk_jpeg_dec_set_bs_write_ptr(void __iomem * base,u32 ptr)296 static void mtk_jpeg_dec_set_bs_write_ptr(void __iomem *base, u32 ptr)
297 {
298 mtk_jpeg_verify_align(ptr, 16, JPGDEC_REG_FILE_BRP);
299 writel(ptr, base + JPGDEC_REG_FILE_BRP);
300 }
301
mtk_jpeg_dec_set_bs_info(void __iomem * base,u32 addr,u32 size)302 static void mtk_jpeg_dec_set_bs_info(void __iomem *base, u32 addr, u32 size)
303 {
304 mtk_jpeg_verify_align(addr, 16, JPGDEC_REG_FILE_ADDR);
305 mtk_jpeg_verify_align(size, 128, JPGDEC_REG_FILE_TOTAL_SIZE);
306 writel(addr, base + JPGDEC_REG_FILE_ADDR);
307 writel(size, base + JPGDEC_REG_FILE_TOTAL_SIZE);
308 }
309
mtk_jpeg_dec_set_comp_id(void __iomem * base,u32 id_y,u32 id_u,u32 id_v)310 static void mtk_jpeg_dec_set_comp_id(void __iomem *base, u32 id_y, u32 id_u,
311 u32 id_v)
312 {
313 u32 val;
314
315 val = ((id_y & 0x00FF) << 24) | ((id_u & 0x00FF) << 16) |
316 ((id_v & 0x00FF) << 8);
317 writel(val, base + JPGDEC_REG_COMP_ID);
318 }
319
mtk_jpeg_dec_set_total_mcu(void __iomem * base,u32 num)320 static void mtk_jpeg_dec_set_total_mcu(void __iomem *base, u32 num)
321 {
322 writel(num - 1, base + JPGDEC_REG_TOTAL_MCU_NUM);
323 }
324
mtk_jpeg_dec_set_comp0_du(void __iomem * base,u32 num)325 static void mtk_jpeg_dec_set_comp0_du(void __iomem *base, u32 num)
326 {
327 writel(num - 1, base + JPGDEC_REG_COMP0_DATA_UNIT_NUM);
328 }
329
mtk_jpeg_dec_set_du_membership(void __iomem * base,u32 member,u32 gmc,u32 isgray)330 static void mtk_jpeg_dec_set_du_membership(void __iomem *base, u32 member,
331 u32 gmc, u32 isgray)
332 {
333 if (isgray)
334 member = 0x3FFFFFFC;
335 member |= (isgray << 31) | (gmc << 30);
336 writel(member, base + JPGDEC_REG_DU_CTRL);
337 }
338
mtk_jpeg_dec_set_q_table(void __iomem * base,u32 id0,u32 id1,u32 id2)339 static void mtk_jpeg_dec_set_q_table(void __iomem *base, u32 id0, u32 id1,
340 u32 id2)
341 {
342 u32 val;
343
344 val = ((id0 & 0x0f) << 8) | ((id1 & 0x0f) << 4) | ((id2 & 0x0f) << 0);
345 writel(val, base + JPGDEC_REG_QT_ID);
346 }
347
mtk_jpeg_dec_set_dma_group(void __iomem * base,u32 mcu_group,u32 group_num,u32 last_mcu)348 static void mtk_jpeg_dec_set_dma_group(void __iomem *base, u32 mcu_group,
349 u32 group_num, u32 last_mcu)
350 {
351 u32 val;
352
353 val = (((mcu_group - 1) & 0x00FF) << 16) |
354 (((group_num - 1) & 0x007F) << 8) |
355 ((last_mcu - 1) & 0x00FF);
356 writel(val, base + JPGDEC_REG_WDMA_CTRL);
357 }
358
mtk_jpeg_dec_set_sampling_factor(void __iomem * base,u32 comp_num,u32 y_w,u32 y_h,u32 u_w,u32 u_h,u32 v_w,u32 v_h)359 static void mtk_jpeg_dec_set_sampling_factor(void __iomem *base, u32 comp_num,
360 u32 y_w, u32 y_h, u32 u_w,
361 u32 u_h, u32 v_w, u32 v_h)
362 {
363 u32 val;
364 u32 y_wh = (MTK_JPEG_DUNUM_MASK(y_w) << 2) | MTK_JPEG_DUNUM_MASK(y_h);
365 u32 u_wh = (MTK_JPEG_DUNUM_MASK(u_w) << 2) | MTK_JPEG_DUNUM_MASK(u_h);
366 u32 v_wh = (MTK_JPEG_DUNUM_MASK(v_w) << 2) | MTK_JPEG_DUNUM_MASK(v_h);
367
368 if (comp_num == 1)
369 val = 0;
370 else
371 val = (y_wh << 8) | (u_wh << 4) | v_wh;
372 writel(val, base + JPGDEC_REG_DU_NUM);
373 }
374
mtk_jpeg_dec_set_config(void __iomem * base,struct mtk_jpeg_dec_param * config,struct mtk_jpeg_bs * bs,struct mtk_jpeg_fb * fb)375 void mtk_jpeg_dec_set_config(void __iomem *base,
376 struct mtk_jpeg_dec_param *config,
377 struct mtk_jpeg_bs *bs,
378 struct mtk_jpeg_fb *fb)
379 {
380 mtk_jpeg_dec_set_brz_factor(base, 0, 0, config->uv_brz_w, 0);
381 mtk_jpeg_dec_set_dec_mode(base, 0);
382 mtk_jpeg_dec_set_comp0_du(base, config->unit_num);
383 mtk_jpeg_dec_set_total_mcu(base, config->total_mcu);
384 mtk_jpeg_dec_set_bs_info(base, bs->str_addr, bs->size);
385 mtk_jpeg_dec_set_bs_write_ptr(base, bs->end_addr);
386 mtk_jpeg_dec_set_du_membership(base, config->membership, 1,
387 (config->comp_num == 1) ? 1 : 0);
388 mtk_jpeg_dec_set_comp_id(base, config->comp_id[0], config->comp_id[1],
389 config->comp_id[2]);
390 mtk_jpeg_dec_set_q_table(base, config->qtbl_num[0],
391 config->qtbl_num[1], config->qtbl_num[2]);
392 mtk_jpeg_dec_set_sampling_factor(base, config->comp_num,
393 config->sampling_w[0],
394 config->sampling_h[0],
395 config->sampling_w[1],
396 config->sampling_h[1],
397 config->sampling_w[2],
398 config->sampling_h[2]);
399 mtk_jpeg_dec_set_mem_stride(base, config->mem_stride[0],
400 config->mem_stride[1]);
401 mtk_jpeg_dec_set_img_stride(base, config->img_stride[0],
402 config->img_stride[1]);
403 mtk_jpeg_dec_set_dst_bank0(base, fb->plane_addr[0],
404 fb->plane_addr[1], fb->plane_addr[2]);
405 mtk_jpeg_dec_set_dst_bank1(base, 0, 0, 0);
406 mtk_jpeg_dec_set_dma_group(base, config->dma_mcu, config->dma_group,
407 config->dma_last_mcu);
408 mtk_jpeg_dec_set_pause_mcu_idx(base, config->total_mcu);
409 }
410