GNU Linux-libre 4.19.281-gnu1
[releases.git] / drivers / media / platform / mtk-jpeg / mtk_jpeg_hw.c
1 /*
2  * Copyright (c) 2016 MediaTek Inc.
3  * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
4  *         Rick Chang <rick.chang@mediatek.com>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  */
15
16 #include <linux/io.h>
17 #include <linux/kernel.h>
18 #include <media/videobuf2-core.h>
19
20 #include "mtk_jpeg_hw.h"
21
22 #define MTK_JPEG_DUNUM_MASK(val)        (((val) - 1) & 0x3)
23
24 enum mtk_jpeg_color {
25         MTK_JPEG_COLOR_420              = 0x00221111,
26         MTK_JPEG_COLOR_422              = 0x00211111,
27         MTK_JPEG_COLOR_444              = 0x00111111,
28         MTK_JPEG_COLOR_422V             = 0x00121111,
29         MTK_JPEG_COLOR_422X2            = 0x00412121,
30         MTK_JPEG_COLOR_422VX2           = 0x00222121,
31         MTK_JPEG_COLOR_400              = 0x00110000
32 };
33
34 static inline int mtk_jpeg_verify_align(u32 val, int align, u32 reg)
35 {
36         if (val & (align - 1)) {
37                 pr_err("mtk-jpeg: write reg %x without %d align\n", reg, align);
38                 return -1;
39         }
40
41         return 0;
42 }
43
44 static int mtk_jpeg_decide_format(struct mtk_jpeg_dec_param *param)
45 {
46         param->src_color = (param->sampling_w[0] << 20) |
47                            (param->sampling_h[0] << 16) |
48                            (param->sampling_w[1] << 12) |
49                            (param->sampling_h[1] << 8) |
50                            (param->sampling_w[2] << 4) |
51                            (param->sampling_h[2]);
52
53         param->uv_brz_w = 0;
54         switch (param->src_color) {
55         case MTK_JPEG_COLOR_444:
56                 param->uv_brz_w = 1;
57                 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
58                 break;
59         case MTK_JPEG_COLOR_422X2:
60         case MTK_JPEG_COLOR_422:
61                 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
62                 break;
63         case MTK_JPEG_COLOR_422V:
64         case MTK_JPEG_COLOR_422VX2:
65                 param->uv_brz_w = 1;
66                 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
67                 break;
68         case MTK_JPEG_COLOR_420:
69                 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
70                 break;
71         case MTK_JPEG_COLOR_400:
72                 param->dst_fourcc = V4L2_PIX_FMT_GREY;
73                 break;
74         default:
75                 param->dst_fourcc = 0;
76                 return -1;
77         }
78
79         return 0;
80 }
81
82 static void mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param *param)
83 {
84         u32 factor_w, factor_h;
85         u32 i, comp, blk;
86
87         factor_w = 2 + param->sampling_w[0];
88         factor_h = 2 + param->sampling_h[0];
89         param->mcu_w = (param->pic_w + (1 << factor_w) - 1) >> factor_w;
90         param->mcu_h = (param->pic_h + (1 << factor_h) - 1) >> factor_h;
91         param->total_mcu = param->mcu_w * param->mcu_h;
92         param->unit_num = ((param->pic_w + 7) >> 3) * ((param->pic_h + 7) >> 3);
93         param->blk_num = 0;
94         for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
95                 param->blk_comp[i] = 0;
96                 if (i >= param->comp_num)
97                         continue;
98                 param->blk_comp[i] = param->sampling_w[i] *
99                                      param->sampling_h[i];
100                 param->blk_num += param->blk_comp[i];
101         }
102
103         param->membership = 0;
104         for (i = 0, blk = 0, comp = 0; i < MTK_JPEG_BLOCK_MAX; i++) {
105                 if (i < param->blk_num && comp < param->comp_num) {
106                         u32 tmp;
107
108                         tmp = (0x04 + (comp & 0x3));
109                         param->membership |= tmp << (i * 3);
110                         if (++blk == param->blk_comp[comp]) {
111                                 comp++;
112                                 blk = 0;
113                         }
114                 } else {
115                         param->membership |=  7 << (i * 3);
116                 }
117         }
118 }
119
120 static void mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param *param)
121 {
122         u32 factor_mcu = 3;
123
124         if (param->src_color == MTK_JPEG_COLOR_444 &&
125             param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
126                 factor_mcu = 4;
127         else if (param->src_color == MTK_JPEG_COLOR_422V &&
128                  param->dst_fourcc == V4L2_PIX_FMT_YUV420M)
129                 factor_mcu = 4;
130         else if (param->src_color == MTK_JPEG_COLOR_422X2 &&
131                  param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
132                 factor_mcu = 2;
133         else if (param->src_color == MTK_JPEG_COLOR_400 ||
134                  (param->src_color & 0x0FFFF) == 0)
135                 factor_mcu = 4;
136
137         param->dma_mcu = 1 << factor_mcu;
138         param->dma_group = param->mcu_w / param->dma_mcu;
139         param->dma_last_mcu = param->mcu_w % param->dma_mcu;
140         if (param->dma_last_mcu)
141                 param->dma_group++;
142         else
143                 param->dma_last_mcu = param->dma_mcu;
144 }
145
146 static int mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param *param)
147 {
148         u32 i, padding_w;
149         u32 ds_row_h[3];
150         u32 brz_w[3];
151
152         brz_w[0] = 0;
153         brz_w[1] = param->uv_brz_w;
154         brz_w[2] = brz_w[1];
155
156         for (i = 0; i < param->comp_num; i++) {
157                 if (brz_w[i] > 3)
158                         return -1;
159
160                 padding_w = param->mcu_w * MTK_JPEG_DCTSIZE *
161                                 param->sampling_w[i];
162                 /* output format is 420/422 */
163                 param->comp_w[i] = padding_w >> brz_w[i];
164                 param->comp_w[i] = mtk_jpeg_align(param->comp_w[i],
165                                                   MTK_JPEG_DCTSIZE);
166                 param->img_stride[i] = i ? mtk_jpeg_align(param->comp_w[i], 16)
167                                         : mtk_jpeg_align(param->comp_w[i], 32);
168                 ds_row_h[i] = (MTK_JPEG_DCTSIZE * param->sampling_h[i]);
169         }
170         param->dec_w = param->img_stride[0];
171         param->dec_h = ds_row_h[0] * param->mcu_h;
172
173         for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
174                 /* They must be equal in frame mode. */
175                 param->mem_stride[i] = param->img_stride[i];
176                 param->comp_size[i] = param->mem_stride[i] * ds_row_h[i] *
177                                       param->mcu_h;
178         }
179
180         param->y_size = param->comp_size[0];
181         param->uv_size = param->comp_size[1];
182         param->dec_size = param->y_size + (param->uv_size << 1);
183
184         return 0;
185 }
186
187 int mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param *param)
188 {
189         if (mtk_jpeg_decide_format(param))
190                 return -1;
191
192         mtk_jpeg_calc_mcu(param);
193         mtk_jpeg_calc_dma_group(param);
194         if (mtk_jpeg_calc_dst_size(param))
195                 return -2;
196
197         return 0;
198 }
199
200 u32 mtk_jpeg_dec_get_int_status(void __iomem *base)
201 {
202         u32 ret;
203
204         ret = readl(base + JPGDEC_REG_INTERRUPT_STATUS) & BIT_INQST_MASK_ALLIRQ;
205         if (ret)
206                 writel(ret, base + JPGDEC_REG_INTERRUPT_STATUS);
207
208         return ret;
209 }
210
211 u32 mtk_jpeg_dec_enum_result(u32 irq_result)
212 {
213         if (irq_result & BIT_INQST_MASK_EOF)
214                 return MTK_JPEG_DEC_RESULT_EOF_DONE;
215         if (irq_result & BIT_INQST_MASK_PAUSE)
216                 return MTK_JPEG_DEC_RESULT_PAUSE;
217         if (irq_result & BIT_INQST_MASK_UNDERFLOW)
218                 return MTK_JPEG_DEC_RESULT_UNDERFLOW;
219         if (irq_result & BIT_INQST_MASK_OVERFLOW)
220                 return MTK_JPEG_DEC_RESULT_OVERFLOW;
221         if (irq_result & BIT_INQST_MASK_ERROR_BS)
222                 return MTK_JPEG_DEC_RESULT_ERROR_BS;
223
224         return MTK_JPEG_DEC_RESULT_ERROR_UNKNOWN;
225 }
226
227 void mtk_jpeg_dec_start(void __iomem *base)
228 {
229         writel(0, base + JPGDEC_REG_TRIG);
230 }
231
232 static void mtk_jpeg_dec_soft_reset(void __iomem *base)
233 {
234         writel(0x0000FFFF, base + JPGDEC_REG_INTERRUPT_STATUS);
235         writel(0x00, base + JPGDEC_REG_RESET);
236         writel(0x01, base + JPGDEC_REG_RESET);
237 }
238
239 static void mtk_jpeg_dec_hard_reset(void __iomem *base)
240 {
241         writel(0x00, base + JPGDEC_REG_RESET);
242         writel(0x10, base + JPGDEC_REG_RESET);
243 }
244
245 void mtk_jpeg_dec_reset(void __iomem *base)
246 {
247         mtk_jpeg_dec_soft_reset(base);
248         mtk_jpeg_dec_hard_reset(base);
249 }
250
251 static void mtk_jpeg_dec_set_brz_factor(void __iomem *base, u8 yscale_w,
252                                         u8 yscale_h, u8 uvscale_w, u8 uvscale_h)
253 {
254         u32 val;
255
256         val = (uvscale_h << 12) | (uvscale_w << 8) |
257               (yscale_h << 4) | yscale_w;
258         writel(val, base + JPGDEC_REG_BRZ_FACTOR);
259 }
260
261 static void mtk_jpeg_dec_set_dst_bank0(void __iomem *base, u32 addr_y,
262                                        u32 addr_u, u32 addr_v)
263 {
264         mtk_jpeg_verify_align(addr_y, 16, JPGDEC_REG_DEST_ADDR0_Y);
265         writel(addr_y, base + JPGDEC_REG_DEST_ADDR0_Y);
266         mtk_jpeg_verify_align(addr_u, 16, JPGDEC_REG_DEST_ADDR0_U);
267         writel(addr_u, base + JPGDEC_REG_DEST_ADDR0_U);
268         mtk_jpeg_verify_align(addr_v, 16, JPGDEC_REG_DEST_ADDR0_V);
269         writel(addr_v, base + JPGDEC_REG_DEST_ADDR0_V);
270 }
271
272 static void mtk_jpeg_dec_set_dst_bank1(void __iomem *base, u32 addr_y,
273                                        u32 addr_u, u32 addr_v)
274 {
275         writel(addr_y, base + JPGDEC_REG_DEST_ADDR1_Y);
276         writel(addr_u, base + JPGDEC_REG_DEST_ADDR1_U);
277         writel(addr_v, base + JPGDEC_REG_DEST_ADDR1_V);
278 }
279
280 static void mtk_jpeg_dec_set_mem_stride(void __iomem *base, u32 stride_y,
281                                         u32 stride_uv)
282 {
283         writel((stride_y & 0xFFFF), base + JPGDEC_REG_STRIDE_Y);
284         writel((stride_uv & 0xFFFF), base + JPGDEC_REG_STRIDE_UV);
285 }
286
287 static void mtk_jpeg_dec_set_img_stride(void __iomem *base, u32 stride_y,
288                                         u32 stride_uv)
289 {
290         writel((stride_y & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_Y);
291         writel((stride_uv & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_UV);
292 }
293
294 static void mtk_jpeg_dec_set_pause_mcu_idx(void __iomem *base, u32 idx)
295 {
296         writel(idx & 0x0003FFFFFF, base + JPGDEC_REG_PAUSE_MCU_NUM);
297 }
298
299 static void mtk_jpeg_dec_set_dec_mode(void __iomem *base, u32 mode)
300 {
301         writel(mode & 0x03, base + JPGDEC_REG_OPERATION_MODE);
302 }
303
304 static void mtk_jpeg_dec_set_bs_write_ptr(void __iomem *base, u32 ptr)
305 {
306         mtk_jpeg_verify_align(ptr, 16, JPGDEC_REG_FILE_BRP);
307         writel(ptr, base + JPGDEC_REG_FILE_BRP);
308 }
309
310 static void mtk_jpeg_dec_set_bs_info(void __iomem *base, u32 addr, u32 size)
311 {
312         mtk_jpeg_verify_align(addr, 16, JPGDEC_REG_FILE_ADDR);
313         mtk_jpeg_verify_align(size, 128, JPGDEC_REG_FILE_TOTAL_SIZE);
314         writel(addr, base + JPGDEC_REG_FILE_ADDR);
315         writel(size, base + JPGDEC_REG_FILE_TOTAL_SIZE);
316 }
317
318 static void mtk_jpeg_dec_set_comp_id(void __iomem *base, u32 id_y, u32 id_u,
319                                      u32 id_v)
320 {
321         u32 val;
322
323         val = ((id_y & 0x00FF) << 24) | ((id_u & 0x00FF) << 16) |
324               ((id_v & 0x00FF) << 8);
325         writel(val, base + JPGDEC_REG_COMP_ID);
326 }
327
328 static void mtk_jpeg_dec_set_total_mcu(void __iomem *base, u32 num)
329 {
330         writel(num - 1, base + JPGDEC_REG_TOTAL_MCU_NUM);
331 }
332
333 static void mtk_jpeg_dec_set_comp0_du(void __iomem *base, u32 num)
334 {
335         writel(num - 1, base + JPGDEC_REG_COMP0_DATA_UNIT_NUM);
336 }
337
338 static void mtk_jpeg_dec_set_du_membership(void __iomem *base, u32 member,
339                                            u32 gmc, u32 isgray)
340 {
341         if (isgray)
342                 member = 0x3FFFFFFC;
343         member |= (isgray << 31) | (gmc << 30);
344         writel(member, base + JPGDEC_REG_DU_CTRL);
345 }
346
347 static void mtk_jpeg_dec_set_q_table(void __iomem *base, u32 id0, u32 id1,
348                                      u32 id2)
349 {
350         u32 val;
351
352         val = ((id0 & 0x0f) << 8) | ((id1 & 0x0f) << 4) | ((id2 & 0x0f) << 0);
353         writel(val, base + JPGDEC_REG_QT_ID);
354 }
355
356 static void mtk_jpeg_dec_set_dma_group(void __iomem *base, u32 mcu_group,
357                                        u32 group_num, u32 last_mcu)
358 {
359         u32 val;
360
361         val = (((mcu_group - 1) & 0x00FF) << 16) |
362               (((group_num - 1) & 0x007F) << 8) |
363               ((last_mcu - 1) & 0x00FF);
364         writel(val, base + JPGDEC_REG_WDMA_CTRL);
365 }
366
367 static void mtk_jpeg_dec_set_sampling_factor(void __iomem *base, u32 comp_num,
368                                              u32 y_w, u32 y_h, u32 u_w,
369                                              u32 u_h, u32 v_w, u32 v_h)
370 {
371         u32 val;
372         u32 y_wh = (MTK_JPEG_DUNUM_MASK(y_w) << 2) | MTK_JPEG_DUNUM_MASK(y_h);
373         u32 u_wh = (MTK_JPEG_DUNUM_MASK(u_w) << 2) | MTK_JPEG_DUNUM_MASK(u_h);
374         u32 v_wh = (MTK_JPEG_DUNUM_MASK(v_w) << 2) | MTK_JPEG_DUNUM_MASK(v_h);
375
376         if (comp_num == 1)
377                 val = 0;
378         else
379                 val = (y_wh << 8) | (u_wh << 4) | v_wh;
380         writel(val, base + JPGDEC_REG_DU_NUM);
381 }
382
383 void mtk_jpeg_dec_set_config(void __iomem *base,
384                              struct mtk_jpeg_dec_param *config,
385                              struct mtk_jpeg_bs *bs,
386                              struct mtk_jpeg_fb *fb)
387 {
388         mtk_jpeg_dec_set_brz_factor(base, 0, 0, config->uv_brz_w, 0);
389         mtk_jpeg_dec_set_dec_mode(base, 0);
390         mtk_jpeg_dec_set_comp0_du(base, config->unit_num);
391         mtk_jpeg_dec_set_total_mcu(base, config->total_mcu);
392         mtk_jpeg_dec_set_bs_info(base, bs->str_addr, bs->size);
393         mtk_jpeg_dec_set_bs_write_ptr(base, bs->end_addr);
394         mtk_jpeg_dec_set_du_membership(base, config->membership, 1,
395                                        (config->comp_num == 1) ? 1 : 0);
396         mtk_jpeg_dec_set_comp_id(base, config->comp_id[0], config->comp_id[1],
397                                  config->comp_id[2]);
398         mtk_jpeg_dec_set_q_table(base, config->qtbl_num[0],
399                                  config->qtbl_num[1], config->qtbl_num[2]);
400         mtk_jpeg_dec_set_sampling_factor(base, config->comp_num,
401                                          config->sampling_w[0],
402                                          config->sampling_h[0],
403                                          config->sampling_w[1],
404                                          config->sampling_h[1],
405                                          config->sampling_w[2],
406                                          config->sampling_h[2]);
407         mtk_jpeg_dec_set_mem_stride(base, config->mem_stride[0],
408                                     config->mem_stride[1]);
409         mtk_jpeg_dec_set_img_stride(base, config->img_stride[0],
410                                     config->img_stride[1]);
411         mtk_jpeg_dec_set_dst_bank0(base, fb->plane_addr[0],
412                                    fb->plane_addr[1], fb->plane_addr[2]);
413         mtk_jpeg_dec_set_dst_bank1(base, 0, 0, 0);
414         mtk_jpeg_dec_set_dma_group(base, config->dma_mcu, config->dma_group,
415                                    config->dma_last_mcu);
416         mtk_jpeg_dec_set_pause_mcu_idx(base, config->total_mcu);
417 }