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1// SPDX-License-Identifier: GPL-2.0-only
2/* linux/drivers/media/platform/samsung/s5p-jpeg/jpeg-hw.h
3 *
4 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
6 *
7 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
8 */
9
10#include <linux/io.h>
11#include <linux/videodev2.h>
12
13#include "jpeg-core.h"
14#include "jpeg-regs.h"
15#include "jpeg-hw-s5p.h"
16
17void s5p_jpeg_reset(void __iomem *regs)
18{
19 unsigned long reg;
20
21 writel(1, regs + S5P_JPG_SW_RESET);
22 reg = readl(regs + S5P_JPG_SW_RESET);
23 /* no other way but polling for when JPEG IP becomes operational */
24 while (reg != 0) {
25 cpu_relax();
26 reg = readl(regs + S5P_JPG_SW_RESET);
27 }
28}
29
30void s5p_jpeg_poweron(void __iomem *regs)
31{
32 writel(S5P_POWER_ON, regs + S5P_JPGCLKCON);
33}
34
35void s5p_jpeg_input_raw_mode(void __iomem *regs, unsigned long mode)
36{
37 unsigned long reg, m;
38
39 m = S5P_MOD_SEL_565;
40 if (mode == S5P_JPEG_RAW_IN_565)
41 m = S5P_MOD_SEL_565;
42 else if (mode == S5P_JPEG_RAW_IN_422)
43 m = S5P_MOD_SEL_422;
44
45 reg = readl(regs + S5P_JPGCMOD);
46 reg &= ~S5P_MOD_SEL_MASK;
47 reg |= m;
48 writel(reg, regs + S5P_JPGCMOD);
49}
50
51void s5p_jpeg_proc_mode(void __iomem *regs, unsigned long mode)
52{
53 unsigned long reg, m;
54
55 if (mode == S5P_JPEG_ENCODE)
56 m = S5P_PROC_MODE_COMPR;
57 else
58 m = S5P_PROC_MODE_DECOMPR;
59 reg = readl(regs + S5P_JPGMOD);
60 reg &= ~S5P_PROC_MODE_MASK;
61 reg |= m;
62 writel(reg, regs + S5P_JPGMOD);
63}
64
65void s5p_jpeg_subsampling_mode(void __iomem *regs, unsigned int mode)
66{
67 unsigned long reg, m;
68
69 if (mode == V4L2_JPEG_CHROMA_SUBSAMPLING_420)
70 m = S5P_SUBSAMPLING_MODE_420;
71 else
72 m = S5P_SUBSAMPLING_MODE_422;
73
74 reg = readl(regs + S5P_JPGMOD);
75 reg &= ~S5P_SUBSAMPLING_MODE_MASK;
76 reg |= m;
77 writel(reg, regs + S5P_JPGMOD);
78}
79
80unsigned int s5p_jpeg_get_subsampling_mode(void __iomem *regs)
81{
82 return readl(regs + S5P_JPGMOD) & S5P_SUBSAMPLING_MODE_MASK;
83}
84
85void s5p_jpeg_dri(void __iomem *regs, unsigned int dri)
86{
87 unsigned long reg;
88
89 reg = readl(regs + S5P_JPGDRI_U);
90 reg &= ~0xff;
91 reg |= (dri >> 8) & 0xff;
92 writel(reg, regs + S5P_JPGDRI_U);
93
94 reg = readl(regs + S5P_JPGDRI_L);
95 reg &= ~0xff;
96 reg |= dri & 0xff;
97 writel(reg, regs + S5P_JPGDRI_L);
98}
99
100void s5p_jpeg_qtbl(void __iomem *regs, unsigned int t, unsigned int n)
101{
102 unsigned long reg;
103
104 reg = readl(regs + S5P_JPG_QTBL);
105 reg &= ~S5P_QT_NUMt_MASK(t);
106 reg |= (n << S5P_QT_NUMt_SHIFT(t)) & S5P_QT_NUMt_MASK(t);
107 writel(reg, regs + S5P_JPG_QTBL);
108}
109
110void s5p_jpeg_htbl_ac(void __iomem *regs, unsigned int t)
111{
112 unsigned long reg;
113
114 reg = readl(regs + S5P_JPG_HTBL);
115 reg &= ~S5P_HT_NUMt_AC_MASK(t);
116 /* this driver uses table 0 for all color components */
117 reg |= (0 << S5P_HT_NUMt_AC_SHIFT(t)) & S5P_HT_NUMt_AC_MASK(t);
118 writel(reg, regs + S5P_JPG_HTBL);
119}
120
121void s5p_jpeg_htbl_dc(void __iomem *regs, unsigned int t)
122{
123 unsigned long reg;
124
125 reg = readl(regs + S5P_JPG_HTBL);
126 reg &= ~S5P_HT_NUMt_DC_MASK(t);
127 /* this driver uses table 0 for all color components */
128 reg |= (0 << S5P_HT_NUMt_DC_SHIFT(t)) & S5P_HT_NUMt_DC_MASK(t);
129 writel(reg, regs + S5P_JPG_HTBL);
130}
131
132void s5p_jpeg_y(void __iomem *regs, unsigned int y)
133{
134 unsigned long reg;
135
136 reg = readl(regs + S5P_JPGY_U);
137 reg &= ~0xff;
138 reg |= (y >> 8) & 0xff;
139 writel(reg, regs + S5P_JPGY_U);
140
141 reg = readl(regs + S5P_JPGY_L);
142 reg &= ~0xff;
143 reg |= y & 0xff;
144 writel(reg, regs + S5P_JPGY_L);
145}
146
147void s5p_jpeg_x(void __iomem *regs, unsigned int x)
148{
149 unsigned long reg;
150
151 reg = readl(regs + S5P_JPGX_U);
152 reg &= ~0xff;
153 reg |= (x >> 8) & 0xff;
154 writel(reg, regs + S5P_JPGX_U);
155
156 reg = readl(regs + S5P_JPGX_L);
157 reg &= ~0xff;
158 reg |= x & 0xff;
159 writel(reg, regs + S5P_JPGX_L);
160}
161
162void s5p_jpeg_rst_int_enable(void __iomem *regs, bool enable)
163{
164 unsigned long reg;
165
166 reg = readl(regs + S5P_JPGINTSE);
167 reg &= ~S5P_RSTm_INT_EN_MASK;
168 if (enable)
169 reg |= S5P_RSTm_INT_EN;
170 writel(reg, regs + S5P_JPGINTSE);
171}
172
173void s5p_jpeg_data_num_int_enable(void __iomem *regs, bool enable)
174{
175 unsigned long reg;
176
177 reg = readl(regs + S5P_JPGINTSE);
178 reg &= ~S5P_DATA_NUM_INT_EN_MASK;
179 if (enable)
180 reg |= S5P_DATA_NUM_INT_EN;
181 writel(reg, regs + S5P_JPGINTSE);
182}
183
184void s5p_jpeg_final_mcu_num_int_enable(void __iomem *regs, bool enbl)
185{
186 unsigned long reg;
187
188 reg = readl(regs + S5P_JPGINTSE);
189 reg &= ~S5P_FINAL_MCU_NUM_INT_EN_MASK;
190 if (enbl)
191 reg |= S5P_FINAL_MCU_NUM_INT_EN;
192 writel(reg, regs + S5P_JPGINTSE);
193}
194
195int s5p_jpeg_timer_stat(void __iomem *regs)
196{
197 return (int)((readl(regs + S5P_JPG_TIMER_ST) & S5P_TIMER_INT_STAT_MASK)
198 >> S5P_TIMER_INT_STAT_SHIFT);
199}
200
201void s5p_jpeg_clear_timer_stat(void __iomem *regs)
202{
203 unsigned long reg;
204
205 reg = readl(regs + S5P_JPG_TIMER_SE);
206 reg &= ~S5P_TIMER_INT_STAT_MASK;
207 writel(reg, regs + S5P_JPG_TIMER_SE);
208}
209
210void s5p_jpeg_enc_stream_int(void __iomem *regs, unsigned long size)
211{
212 unsigned long reg;
213
214 reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
215 reg &= ~S5P_ENC_STREAM_BOUND_MASK;
216 reg |= S5P_ENC_STREAM_INT_EN;
217 reg |= size & S5P_ENC_STREAM_BOUND_MASK;
218 writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
219}
220
221int s5p_jpeg_enc_stream_stat(void __iomem *regs)
222{
223 return (int)(readl(regs + S5P_JPG_ENC_STREAM_INTST) &
224 S5P_ENC_STREAM_INT_STAT_MASK);
225}
226
227void s5p_jpeg_clear_enc_stream_stat(void __iomem *regs)
228{
229 unsigned long reg;
230
231 reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
232 reg &= ~S5P_ENC_STREAM_INT_MASK;
233 writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
234}
235
236void s5p_jpeg_outform_raw(void __iomem *regs, unsigned long format)
237{
238 unsigned long reg, f;
239
240 f = S5P_DEC_OUT_FORMAT_422;
241 if (format == S5P_JPEG_RAW_OUT_422)
242 f = S5P_DEC_OUT_FORMAT_422;
243 else if (format == S5P_JPEG_RAW_OUT_420)
244 f = S5P_DEC_OUT_FORMAT_420;
245 reg = readl(regs + S5P_JPG_OUTFORM);
246 reg &= ~S5P_DEC_OUT_FORMAT_MASK;
247 reg |= f;
248 writel(reg, regs + S5P_JPG_OUTFORM);
249}
250
251void s5p_jpeg_jpgadr(void __iomem *regs, unsigned long addr)
252{
253 writel(addr, regs + S5P_JPG_JPGADR);
254}
255
256void s5p_jpeg_imgadr(void __iomem *regs, unsigned long addr)
257{
258 writel(addr, regs + S5P_JPG_IMGADR);
259}
260
261void s5p_jpeg_coef(void __iomem *regs, unsigned int i,
262 unsigned int j, unsigned int coef)
263{
264 unsigned long reg;
265
266 reg = readl(regs + S5P_JPG_COEF(i));
267 reg &= ~S5P_COEFn_MASK(j);
268 reg |= (coef << S5P_COEFn_SHIFT(j)) & S5P_COEFn_MASK(j);
269 writel(reg, regs + S5P_JPG_COEF(i));
270}
271
272void s5p_jpeg_start(void __iomem *regs)
273{
274 writel(1, regs + S5P_JSTART);
275}
276
277int s5p_jpeg_result_stat_ok(void __iomem *regs)
278{
279 return (int)((readl(regs + S5P_JPGINTST) & S5P_RESULT_STAT_MASK)
280 >> S5P_RESULT_STAT_SHIFT);
281}
282
283int s5p_jpeg_stream_stat_ok(void __iomem *regs)
284{
285 return !(int)((readl(regs + S5P_JPGINTST) & S5P_STREAM_STAT_MASK)
286 >> S5P_STREAM_STAT_SHIFT);
287}
288
289void s5p_jpeg_clear_int(void __iomem *regs)
290{
291 readl(regs + S5P_JPGINTST);
292 writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
293 readl(regs + S5P_JPGOPR);
294}
295
296unsigned int s5p_jpeg_compressed_size(void __iomem *regs)
297{
298 unsigned long jpeg_size = 0;
299
300 jpeg_size |= (readl(regs + S5P_JPGCNT_U) & 0xff) << 16;
301 jpeg_size |= (readl(regs + S5P_JPGCNT_M) & 0xff) << 8;
302 jpeg_size |= (readl(regs + S5P_JPGCNT_L) & 0xff);
303
304 return (unsigned int)jpeg_size;
305}