drivers/media/platform/s5p-jpeg/jpeg-hw.h

   1 /* linux/drivers/media/platform/s5p-jpeg/jpeg-hw.h
   2  *
   3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12 #ifndef JPEG_HW_H_
  13 #define JPEG_HW_H_
  14
  15 #include <linux/io.h>
  16 #include <linux/videodev2.h>
  17
  18 #include "jpeg-hw.h"
  19 #include "jpeg-regs.h"
  20
  21 #define S5P_JPEG_MIN_WIDTH              32
  22 #define S5P_JPEG_MIN_HEIGHT             32
  23 #define S5P_JPEG_MAX_WIDTH              8192
  24 #define S5P_JPEG_MAX_HEIGHT             8192
  25 #define S5P_JPEG_ENCODE                 0
  26 #define S5P_JPEG_DECODE                 1
  27 #define S5P_JPEG_RAW_IN_565             0
  28 #define S5P_JPEG_RAW_IN_422             1
  29 #define S5P_JPEG_RAW_OUT_422            0
  30 #define S5P_JPEG_RAW_OUT_420            1
  31
  32 static inline void jpeg_reset(void __iomem *regs)
  33 {
  34         unsigned long reg;
  35
  36         writel(1, regs + S5P_JPG_SW_RESET);
  37         reg = readl(regs + S5P_JPG_SW_RESET);
  38         /* no other way but polling for when JPEG IP becomes operational */
  39         while (reg != 0) {
  40                 cpu_relax();
  41                 reg = readl(regs + S5P_JPG_SW_RESET);
  42         }
  43 }
  44
  45 static inline void jpeg_poweron(void __iomem *regs)
  46 {
  47         writel(S5P_POWER_ON, regs + S5P_JPGCLKCON);
  48 }
  49
  50 static inline void jpeg_input_raw_mode(void __iomem *regs, unsigned long mode)
  51 {
  52         unsigned long reg, m;
  53
  54         m = S5P_MOD_SEL_565;
  55         if (mode == S5P_JPEG_RAW_IN_565)
  56                 m = S5P_MOD_SEL_565;
  57         else if (mode == S5P_JPEG_RAW_IN_422)
  58                 m = S5P_MOD_SEL_422;
  59
  60         reg = readl(regs + S5P_JPGCMOD);
  61         reg &= ~S5P_MOD_SEL_MASK;
  62         reg |= m;
  63         writel(reg, regs + S5P_JPGCMOD);
  64 }
  65
  66 static inline void jpeg_input_raw_y16(void __iomem *regs, bool y16)
  67 {
  68         unsigned long reg;
  69
  70         reg = readl(regs + S5P_JPGCMOD);
  71         if (y16)
  72                 reg |= S5P_MODE_Y16;
  73         else
  74                 reg &= ~S5P_MODE_Y16_MASK;
  75         writel(reg, regs + S5P_JPGCMOD);
  76 }
  77
  78 static inline void jpeg_proc_mode(void __iomem *regs, unsigned long mode)
  79 {
  80         unsigned long reg, m;
  81
  82         m = S5P_PROC_MODE_DECOMPR;
  83         if (mode == S5P_JPEG_ENCODE)
  84                 m = S5P_PROC_MODE_COMPR;
  85         else
  86                 m = S5P_PROC_MODE_DECOMPR;
  87         reg = readl(regs + S5P_JPGMOD);
  88         reg &= ~S5P_PROC_MODE_MASK;
  89         reg |= m;
  90         writel(reg, regs + S5P_JPGMOD);
  91 }
  92
  93 static inline void jpeg_subsampling_mode(void __iomem *regs, unsigned int mode)
  94 {
  95         unsigned long reg, m;
  96
  97         if (mode == V4L2_JPEG_CHROMA_SUBSAMPLING_420)
  98                 m = S5P_SUBSAMPLING_MODE_420;
  99         else
 100                 m = S5P_SUBSAMPLING_MODE_422;
 101
 102         reg = readl(regs + S5P_JPGMOD);
 103         reg &= ~S5P_SUBSAMPLING_MODE_MASK;
 104         reg |= m;
 105         writel(reg, regs + S5P_JPGMOD);
 106 }
 107
 108 static inline unsigned int jpeg_get_subsampling_mode(void __iomem *regs)
 109 {
 110         return readl(regs + S5P_JPGMOD) & S5P_SUBSAMPLING_MODE_MASK;
 111 }
 112
 113 static inline void jpeg_dri(void __iomem *regs, unsigned int dri)
 114 {
 115         unsigned long reg;
 116
 117         reg = readl(regs + S5P_JPGDRI_U);
 118         reg &= ~0xff;
 119         reg |= (dri >> 8) & 0xff;
 120         writel(reg, regs + S5P_JPGDRI_U);
 121
 122         reg = readl(regs + S5P_JPGDRI_L);
 123         reg &= ~0xff;
 124         reg |= dri & 0xff;
 125         writel(reg, regs + S5P_JPGDRI_L);
 126 }
 127
 128 static inline void jpeg_qtbl(void __iomem *regs, unsigned int t, unsigned int n)
 129 {
 130         unsigned long reg;
 131
 132         reg = readl(regs + S5P_JPG_QTBL);
 133         reg &= ~S5P_QT_NUMt_MASK(t);
 134         reg |= (n << S5P_QT_NUMt_SHIFT(t)) & S5P_QT_NUMt_MASK(t);
 135         writel(reg, regs + S5P_JPG_QTBL);
 136 }
 137
 138 static inline void jpeg_htbl_ac(void __iomem *regs, unsigned int t)
 139 {
 140         unsigned long reg;
 141
 142         reg = readl(regs + S5P_JPG_HTBL);
 143         reg &= ~S5P_HT_NUMt_AC_MASK(t);
 144         /* this driver uses table 0 for all color components */
 145         reg |= (0 << S5P_HT_NUMt_AC_SHIFT(t)) & S5P_HT_NUMt_AC_MASK(t);
 146         writel(reg, regs + S5P_JPG_HTBL);
 147 }
 148
 149 static inline void jpeg_htbl_dc(void __iomem *regs, unsigned int t)
 150 {
 151         unsigned long reg;
 152
 153         reg = readl(regs + S5P_JPG_HTBL);
 154         reg &= ~S5P_HT_NUMt_DC_MASK(t);
 155         /* this driver uses table 0 for all color components */
 156         reg |= (0 << S5P_HT_NUMt_DC_SHIFT(t)) & S5P_HT_NUMt_DC_MASK(t);
 157         writel(reg, regs + S5P_JPG_HTBL);
 158 }
 159
 160 static inline void jpeg_y(void __iomem *regs, unsigned int y)
 161 {
 162         unsigned long reg;
 163
 164         reg = readl(regs + S5P_JPGY_U);
 165         reg &= ~0xff;
 166         reg |= (y >> 8) & 0xff;
 167         writel(reg, regs + S5P_JPGY_U);
 168
 169         reg = readl(regs + S5P_JPGY_L);
 170         reg &= ~0xff;
 171         reg |= y & 0xff;
 172         writel(reg, regs + S5P_JPGY_L);
 173 }
 174
 175 static inline void jpeg_x(void __iomem *regs, unsigned int x)
 176 {
 177         unsigned long reg;
 178
 179         reg = readl(regs + S5P_JPGX_U);
 180         reg &= ~0xff;
 181         reg |= (x >> 8) & 0xff;
 182         writel(reg, regs + S5P_JPGX_U);
 183
 184         reg = readl(regs + S5P_JPGX_L);
 185         reg &= ~0xff;
 186         reg |= x & 0xff;
 187         writel(reg, regs + S5P_JPGX_L);
 188 }
 189
 190 static inline void jpeg_rst_int_enable(void __iomem *regs, bool enable)
 191 {
 192         unsigned long reg;
 193
 194         reg = readl(regs + S5P_JPGINTSE);
 195         reg &= ~S5P_RSTm_INT_EN_MASK;
 196         if (enable)
 197                 reg |= S5P_RSTm_INT_EN;
 198         writel(reg, regs + S5P_JPGINTSE);
 199 }
 200
 201 static inline void jpeg_data_num_int_enable(void __iomem *regs, bool enable)
 202 {
 203         unsigned long reg;
 204
 205         reg = readl(regs + S5P_JPGINTSE);
 206         reg &= ~S5P_DATA_NUM_INT_EN_MASK;
 207         if (enable)
 208                 reg |= S5P_DATA_NUM_INT_EN;
 209         writel(reg, regs + S5P_JPGINTSE);
 210 }
 211
 212 static inline void jpeg_final_mcu_num_int_enable(void __iomem *regs, bool enbl)
 213 {
 214         unsigned long reg;
 215
 216         reg = readl(regs + S5P_JPGINTSE);
 217         reg &= ~S5P_FINAL_MCU_NUM_INT_EN_MASK;
 218         if (enbl)
 219                 reg |= S5P_FINAL_MCU_NUM_INT_EN;
 220         writel(reg, regs + S5P_JPGINTSE);
 221 }
 222
 223 static inline void jpeg_timer_enable(void __iomem *regs, unsigned long val)
 224 {
 225         unsigned long reg;
 226
 227         reg = readl(regs + S5P_JPG_TIMER_SE);
 228         reg |= S5P_TIMER_INT_EN;
 229         reg &= ~S5P_TIMER_INIT_MASK;
 230         reg |= val & S5P_TIMER_INIT_MASK;
 231         writel(reg, regs + S5P_JPG_TIMER_SE);
 232 }
 233
 234 static inline void jpeg_timer_disable(void __iomem *regs)
 235 {
 236         unsigned long reg;
 237
 238         reg = readl(regs + S5P_JPG_TIMER_SE);
 239         reg &= ~S5P_TIMER_INT_EN_MASK;
 240         writel(reg, regs + S5P_JPG_TIMER_SE);
 241 }
 242
 243 static inline int jpeg_timer_stat(void __iomem *regs)
 244 {
 245         return (int)((readl(regs + S5P_JPG_TIMER_ST) & S5P_TIMER_INT_STAT_MASK)
 246                      >> S5P_TIMER_INT_STAT_SHIFT);
 247 }
 248
 249 static inline void jpeg_clear_timer_stat(void __iomem *regs)
 250 {
 251         unsigned long reg;
 252
 253         reg = readl(regs + S5P_JPG_TIMER_SE);
 254         reg &= ~S5P_TIMER_INT_STAT_MASK;
 255         writel(reg, regs + S5P_JPG_TIMER_SE);
 256 }
 257
 258 static inline void jpeg_enc_stream_int(void __iomem *regs, unsigned long size)
 259 {
 260         unsigned long reg;
 261
 262         reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
 263         reg &= ~S5P_ENC_STREAM_BOUND_MASK;
 264         reg |= S5P_ENC_STREAM_INT_EN;
 265         reg |= size & S5P_ENC_STREAM_BOUND_MASK;
 266         writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
 267 }
 268
 269 static inline int jpeg_enc_stream_stat(void __iomem *regs)
 270 {
 271         return (int)(readl(regs + S5P_JPG_ENC_STREAM_INTST) &
 272                      S5P_ENC_STREAM_INT_STAT_MASK);
 273 }
 274
 275 static inline void jpeg_clear_enc_stream_stat(void __iomem *regs)
 276 {
 277         unsigned long reg;
 278
 279         reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
 280         reg &= ~S5P_ENC_STREAM_INT_MASK;
 281         writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
 282 }
 283
 284 static inline void jpeg_outform_raw(void __iomem *regs, unsigned long format)
 285 {
 286         unsigned long reg, f;
 287
 288         f = S5P_DEC_OUT_FORMAT_422;
 289         if (format == S5P_JPEG_RAW_OUT_422)
 290                 f = S5P_DEC_OUT_FORMAT_422;
 291         else if (format == S5P_JPEG_RAW_OUT_420)
 292                 f = S5P_DEC_OUT_FORMAT_420;
 293         reg = readl(regs + S5P_JPG_OUTFORM);
 294         reg &= ~S5P_DEC_OUT_FORMAT_MASK;
 295         reg |= f;
 296         writel(reg, regs + S5P_JPG_OUTFORM);
 297 }
 298
 299 static inline void jpeg_jpgadr(void __iomem *regs, unsigned long addr)
 300 {
 301         writel(addr, regs + S5P_JPG_JPGADR);
 302 }
 303
 304 static inline void jpeg_imgadr(void __iomem *regs, unsigned long addr)
 305 {
 306         writel(addr, regs + S5P_JPG_IMGADR);
 307 }
 308
 309 static inline void jpeg_coef(void __iomem *regs, unsigned int i,
 310                              unsigned int j, unsigned int coef)
 311 {
 312         unsigned long reg;
 313
 314         reg = readl(regs + S5P_JPG_COEF(i));
 315         reg &= ~S5P_COEFn_MASK(j);
 316         reg |= (coef << S5P_COEFn_SHIFT(j)) & S5P_COEFn_MASK(j);
 317         writel(reg, regs + S5P_JPG_COEF(i));
 318 }
 319
 320 static inline void jpeg_start(void __iomem *regs)
 321 {
 322         writel(1, regs + S5P_JSTART);
 323 }
 324
 325 static inline int jpeg_result_stat_ok(void __iomem *regs)
 326 {
 327         return (int)((readl(regs + S5P_JPGINTST) & S5P_RESULT_STAT_MASK)
 328                      >> S5P_RESULT_STAT_SHIFT);
 329 }
 330
 331 static inline int jpeg_stream_stat_ok(void __iomem *regs)
 332 {
 333         return !(int)((readl(regs + S5P_JPGINTST) & S5P_STREAM_STAT_MASK)
 334                       >> S5P_STREAM_STAT_SHIFT);
 335 }
 336
 337 static inline void jpeg_clear_int(void __iomem *regs)
 338 {
 339         unsigned long reg;
 340
 341         reg = readl(regs + S5P_JPGINTST);
 342         writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
 343         reg = readl(regs + S5P_JPGOPR);
 344 }
 345
 346 static inline unsigned int jpeg_compressed_size(void __iomem *regs)
 347 {
 348         unsigned long jpeg_size = 0;
 349
 350         jpeg_size |= (readl(regs + S5P_JPGCNT_U) & 0xff) << 16;
 351         jpeg_size |= (readl(regs + S5P_JPGCNT_M) & 0xff) << 8;
 352         jpeg_size |= (readl(regs + S5P_JPGCNT_L) & 0xff);
 353
 354         return (unsigned int)jpeg_size;
 355 }
 356
 357 #endif /* JPEG_HW_H_ */