1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Author: Mikhail Ulyanov
4 * Copyright (C) 2014-2015 Cogent Embedded, Inc. <source@cogentembedded.com>
5 * Copyright (C) 2014-2015 Renesas Electronics Corporation
6 *
7 * This is based on the drivers/media/platform/samsung/s5p-jpeg driver by
8 * Andrzej Pietrasiewicz and Jacek Anaszewski.
9 * Some portions of code inspired by VSP1 driver by Laurent Pinchart.
10 *
11 * TODO in order of priority:
12 * 1) Rotation
13 * 2) Cropping
14 * 3) V4L2_CID_JPEG_ACTIVE_MARKER
15 */
16
17 #include <asm/unaligned.h>
18 #include <linux/clk.h>
19 #include <linux/err.h>
20 #include <linux/interrupt.h>
21 #include <linux/io.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/of.h>
25 #include <linux/platform_device.h>
26 #include <linux/slab.h>
27 #include <linux/spinlock.h>
28 #include <linux/string.h>
29 #include <linux/videodev2.h>
30 #include <media/jpeg.h>
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-device.h>
33 #include <media/v4l2-event.h>
34 #include <media/v4l2-fh.h>
35 #include <media/v4l2-mem2mem.h>
36 #include <media/v4l2-ioctl.h>
37 #include <media/videobuf2-v4l2.h>
38 #include <media/videobuf2-dma-contig.h>
39
40
41 #define DRV_NAME "rcar_jpu"
42
43 /*
44 * Align JPEG header end to cache line to make sure we will not have any issues
45 * with cache; additionally to requirement (33.3.27 R01UH0501EJ0100 Rev.1.00)
46 */
47 #define JPU_JPEG_HDR_SIZE (ALIGN(0x258, L1_CACHE_BYTES))
48 #define JPU_JPEG_MAX_BYTES_PER_PIXEL 2 /* 16 bit precision format */
49 #define JPU_JPEG_MIN_SIZE 25 /* SOI + SOF + EOI */
50 #define JPU_JPEG_QTBL_SIZE 0x40
51 #define JPU_JPEG_HDCTBL_SIZE 0x1c
52 #define JPU_JPEG_HACTBL_SIZE 0xb2
53 #define JPU_JPEG_HEIGHT_OFFSET 0x91
54 #define JPU_JPEG_WIDTH_OFFSET 0x93
55 #define JPU_JPEG_SUBS_OFFSET 0x97
56 #define JPU_JPEG_QTBL_LUM_OFFSET 0x07
57 #define JPU_JPEG_QTBL_CHR_OFFSET 0x4c
58 #define JPU_JPEG_HDCTBL_LUM_OFFSET 0xa4
59 #define JPU_JPEG_HACTBL_LUM_OFFSET 0xc5
60 #define JPU_JPEG_HDCTBL_CHR_OFFSET 0x17c
61 #define JPU_JPEG_HACTBL_CHR_OFFSET 0x19d
62 #define JPU_JPEG_PADDING_OFFSET 0x24f
63 #define JPU_JPEG_LUM 0x00
64 #define JPU_JPEG_CHR 0x01
65 #define JPU_JPEG_DC 0x00
66 #define JPU_JPEG_AC 0x10
67
68 #define JPU_JPEG_422 0x21
69 #define JPU_JPEG_420 0x22
70
71 #define JPU_JPEG_DEFAULT_422_PIX_FMT V4L2_PIX_FMT_NV16M
72 #define JPU_JPEG_DEFAULT_420_PIX_FMT V4L2_PIX_FMT_NV12M
73
74 #define JPU_RESET_TIMEOUT 100 /* ms */
75 #define JPU_JOB_TIMEOUT 300 /* ms */
76 #define JPU_MAX_QUALITY 4
77 #define JPU_WIDTH_MIN 16
78 #define JPU_HEIGHT_MIN 16
79 #define JPU_WIDTH_MAX 4096
80 #define JPU_HEIGHT_MAX 4096
81 #define JPU_MEMALIGN 8
82
83 /* Flags that indicate a format can be used for capture/output */
84 #define JPU_FMT_TYPE_OUTPUT 0
85 #define JPU_FMT_TYPE_CAPTURE 1
86 #define JPU_ENC_CAPTURE (1 << 0)
87 #define JPU_ENC_OUTPUT (1 << 1)
88 #define JPU_DEC_CAPTURE (1 << 2)
89 #define JPU_DEC_OUTPUT (1 << 3)
90
91 /*
92 * JPEG registers and bits
93 */
94
95 /* JPEG code mode register */
96 #define JCMOD 0x00
97 #define JCMOD_PCTR (1 << 7)
98 #define JCMOD_MSKIP_ENABLE (1 << 5)
99 #define JCMOD_DSP_ENC (0 << 3)
100 #define JCMOD_DSP_DEC (1 << 3)
101 #define JCMOD_REDU (7 << 0)
102 #define JCMOD_REDU_422 (1 << 0)
103 #define JCMOD_REDU_420 (2 << 0)
104
105 /* JPEG code command register */
106 #define JCCMD 0x04
107 #define JCCMD_SRST (1 << 12)
108 #define JCCMD_JEND (1 << 2)
109 #define JCCMD_JSRT (1 << 0)
110
111 /* JPEG code quantization table number register */
112 #define JCQTN 0x0c
113 #define JCQTN_SHIFT(t) (((t) - 1) << 1)
114
115 /* JPEG code Huffman table number register */
116 #define JCHTN 0x10
117 #define JCHTN_AC_SHIFT(t) (((t) << 1) - 1)
118 #define JCHTN_DC_SHIFT(t) (((t) - 1) << 1)
119
120 #define JCVSZU 0x1c /* JPEG code vertical size upper register */
121 #define JCVSZD 0x20 /* JPEG code vertical size lower register */
122 #define JCHSZU 0x24 /* JPEG code horizontal size upper register */
123 #define JCHSZD 0x28 /* JPEG code horizontal size lower register */
124 #define JCSZ_MASK 0xff /* JPEG code h/v size register contains only 1 byte*/
125
126 #define JCDTCU 0x2c /* JPEG code data count upper register */
127 #define JCDTCM 0x30 /* JPEG code data count middle register */
128 #define JCDTCD 0x34 /* JPEG code data count lower register */
129
130 /* JPEG interrupt enable register */
131 #define JINTE 0x38
132 #define JINTE_ERR (7 << 5) /* INT5 + INT6 + INT7 */
133 #define JINTE_TRANSF_COMPL (1 << 10)
134
135 /* JPEG interrupt status register */
136 #define JINTS 0x3c
137 #define JINTS_MASK 0x7c68
138 #define JINTS_ERR (1 << 5)
139 #define JINTS_PROCESS_COMPL (1 << 6)
140 #define JINTS_TRANSF_COMPL (1 << 10)
141
142 #define JCDERR 0x40 /* JPEG code decode error register */
143 #define JCDERR_MASK 0xf /* JPEG code decode error register mask*/
144
145 /* JPEG interface encoding */
146 #define JIFECNT 0x70
147 #define JIFECNT_INFT_422 0
148 #define JIFECNT_INFT_420 1
149 #define JIFECNT_SWAP_WB (3 << 4) /* to JPU */
150
151 #define JIFESYA1 0x74 /* encode source Y address register 1 */
152 #define JIFESCA1 0x78 /* encode source C address register 1 */
153 #define JIFESYA2 0x7c /* encode source Y address register 2 */
154 #define JIFESCA2 0x80 /* encode source C address register 2 */
155 #define JIFESMW 0x84 /* encode source memory width register */
156 #define JIFESVSZ 0x88 /* encode source vertical size register */
157 #define JIFESHSZ 0x8c /* encode source horizontal size register */
158 #define JIFEDA1 0x90 /* encode destination address register 1 */
159 #define JIFEDA2 0x94 /* encode destination address register 2 */
160
161 /* JPEG decoding control register */
162 #define JIFDCNT 0xa0
163 #define JIFDCNT_SWAP_WB (3 << 1) /* from JPU */
164
165 #define JIFDSA1 0xa4 /* decode source address register 1 */
166 #define JIFDDMW 0xb0 /* decode destination memory width register */
167 #define JIFDDVSZ 0xb4 /* decode destination vert. size register */
168 #define JIFDDHSZ 0xb8 /* decode destination horiz. size register */
169 #define JIFDDYA1 0xbc /* decode destination Y address register 1 */
170 #define JIFDDCA1 0xc0 /* decode destination C address register 1 */
171
172 #define JCQTBL(n) (0x10000 + (n) * 0x40) /* quantization tables regs */
173 #define JCHTBD(n) (0x10100 + (n) * 0x100) /* Huffman table DC regs */
174 #define JCHTBA(n) (0x10120 + (n) * 0x100) /* Huffman table AC regs */
175
176 /**
177 * struct jpu - JPEG IP abstraction
178 * @mutex: the mutex protecting this structure
179 * @lock: spinlock protecting the device contexts
180 * @v4l2_dev: v4l2 device for mem2mem mode
181 * @vfd_encoder: video device node for encoder mem2mem mode
182 * @vfd_decoder: video device node for decoder mem2mem mode
183 * @m2m_dev: v4l2 mem2mem device data
184 * @curr: pointer to current context
185 * @regs: JPEG IP registers mapping
186 * @irq: JPEG IP irq
187 * @clk: JPEG IP clock
188 * @dev: JPEG IP struct device
189 * @ref_count: reference counter
190 */
191 struct jpu {
192 struct mutex mutex;
193 spinlock_t lock;
194 struct v4l2_device v4l2_dev;
195 struct video_device vfd_encoder;
196 struct video_device vfd_decoder;
197 struct v4l2_m2m_dev *m2m_dev;
198 struct jpu_ctx *curr;
199
200 void __iomem *regs;
201 unsigned int irq;
202 struct clk *clk;
203 struct device *dev;
204 int ref_count;
205 };
206
207 /**
208 * struct jpu_buffer - driver's specific video buffer
209 * @buf: m2m buffer
210 * @compr_quality: destination image quality in compression mode
211 * @subsampling: source image subsampling in decompression mode
212 */
213 struct jpu_buffer {
214 struct v4l2_m2m_buffer buf;
215 unsigned short compr_quality;
216 unsigned char subsampling;
217 };
218
219 /**
220 * struct jpu_fmt - driver's internal format data
221 * @fourcc: the fourcc code, 0 if not applicable
222 * @colorspace: the colorspace specifier
223 * @bpp: number of bits per pixel per plane
224 * @h_align: horizontal alignment order (align to 2^h_align)
225 * @v_align: vertical alignment order (align to 2^v_align)
226 * @subsampling: (horizontal:4 | vertical:4) subsampling factor
227 * @num_planes: number of planes
228 * @types: types of queue this format is applicable to
229 */
230 struct jpu_fmt {
231 u32 fourcc;
232 u32 colorspace;
233 u8 bpp[2];
234 u8 h_align;
235 u8 v_align;
236 u8 subsampling;
237 u8 num_planes;
238 u16 types;
239 };
240
241 /**
242 * struct jpu_q_data - parameters of one queue
243 * @fmtinfo: driver-specific format of this queue
244 * @format: multiplanar format of this queue
245 * @sequence: sequence number
246 */
247 struct jpu_q_data {
248 struct jpu_fmt *fmtinfo;
249 struct v4l2_pix_format_mplane format;
250 unsigned int sequence;
251 };
252
253 /**
254 * struct jpu_ctx - the device context data
255 * @jpu: JPEG IP device for this context
256 * @encoder: compression (encode) operation or decompression (decode)
257 * @compr_quality: destination image quality in compression (encode) mode
258 * @out_q: source (output) queue information
259 * @cap_q: destination (capture) queue information
260 * @fh: file handler
261 * @ctrl_handler: controls handler
262 */
263 struct jpu_ctx {
264 struct jpu *jpu;
265 bool encoder;
266 unsigned short compr_quality;
267 struct jpu_q_data out_q;
268 struct jpu_q_data cap_q;
269 struct v4l2_fh fh;
270 struct v4l2_ctrl_handler ctrl_handler;
271 };
272
273 /**
274 * jpeg_buffer - description of memory containing input JPEG data
275 * @end: end position in the buffer
276 * @curr: current position in the buffer
277 */
278 struct jpeg_buffer {
279 void *end;
280 void *curr;
281 };
282
283 static struct jpu_fmt jpu_formats[] = {
284 { V4L2_PIX_FMT_JPEG, V4L2_COLORSPACE_JPEG,
285 {0, 0}, 0, 0, 0, 1, JPU_ENC_CAPTURE | JPU_DEC_OUTPUT },
286 { V4L2_PIX_FMT_NV16M, V4L2_COLORSPACE_SRGB,
287 {8, 8}, 2, 2, JPU_JPEG_422, 2, JPU_ENC_OUTPUT | JPU_DEC_CAPTURE },
288 { V4L2_PIX_FMT_NV12M, V4L2_COLORSPACE_SRGB,
289 {8, 4}, 2, 2, JPU_JPEG_420, 2, JPU_ENC_OUTPUT | JPU_DEC_CAPTURE },
290 { V4L2_PIX_FMT_NV16, V4L2_COLORSPACE_SRGB,
291 {16, 0}, 2, 2, JPU_JPEG_422, 1, JPU_ENC_OUTPUT | JPU_DEC_CAPTURE },
292 { V4L2_PIX_FMT_NV12, V4L2_COLORSPACE_SRGB,
293 {12, 0}, 2, 2, JPU_JPEG_420, 1, JPU_ENC_OUTPUT | JPU_DEC_CAPTURE },
294 };
295
296 static const u8 zigzag[] = {
297 0x03, 0x02, 0x0b, 0x13, 0x0a, 0x01, 0x00, 0x09,
298 0x12, 0x1b, 0x23, 0x1a, 0x11, 0x08, 0x07, 0x06,
299 0x0f, 0x10, 0x19, 0x22, 0x2b, 0x33, 0x2a, 0x21,
300 0x18, 0x17, 0x0e, 0x05, 0x04, 0x0d, 0x16, 0x1f,
301 0x20, 0x29, 0x32, 0x3b, 0x3a, 0x31, 0x28, 0x27,
302 0x1e, 0x15, 0x0e, 0x14, 0x10, 0x26, 0x2f, 0x30,
303 0x39, 0x38, 0x37, 0x2e, 0x25, 0x1c, 0x24, 0x2b,
304 0x36, 0x3f, 0x3e, 0x35, 0x2c, 0x34, 0x3d, 0x3c
305 };
306
307 #define QTBL_SIZE (ALIGN(JPU_JPEG_QTBL_SIZE, \
308 sizeof(unsigned int)) / sizeof(unsigned int))
309 #define HDCTBL_SIZE (ALIGN(JPU_JPEG_HDCTBL_SIZE, \
310 sizeof(unsigned int)) / sizeof(unsigned int))
311 #define HACTBL_SIZE (ALIGN(JPU_JPEG_HACTBL_SIZE, \
312 sizeof(unsigned int)) / sizeof(unsigned int))
313 /*
314 * Start of image; Quantization tables
315 * SOF0 (17 bytes payload) is Baseline DCT - Sample precision, height, width,
316 * Number of image components, (Ci:8 - Hi:4 - Vi:4 - Tq:8) * 3 - Y,Cb,Cr;
317 * Huffman tables; Padding with 0xff (33.3.27 R01UH0501EJ0100 Rev.1.00)
318 */
319 #define JPU_JPEG_HDR_BLOB { \
320 0xff, JPEG_MARKER_SOI, 0xff, JPEG_MARKER_DQT, 0x00, \
321 JPU_JPEG_QTBL_SIZE + 0x3, JPU_JPEG_LUM, \
322 [JPU_JPEG_QTBL_LUM_OFFSET ... \
323 JPU_JPEG_QTBL_LUM_OFFSET + JPU_JPEG_QTBL_SIZE - 1] = 0x00, \
324 0xff, JPEG_MARKER_DQT, 0x00, JPU_JPEG_QTBL_SIZE + 0x3, JPU_JPEG_CHR, \
325 [JPU_JPEG_QTBL_CHR_OFFSET ... JPU_JPEG_QTBL_CHR_OFFSET + \
326 JPU_JPEG_QTBL_SIZE - 1] = 0x00, \
327 0xff, JPEG_MARKER_SOF0, 0x00, 0x11, 0x08, \
328 [JPU_JPEG_HEIGHT_OFFSET ... JPU_JPEG_HEIGHT_OFFSET + 1] = 0x00, \
329 [JPU_JPEG_WIDTH_OFFSET ... JPU_JPEG_WIDTH_OFFSET + 1] = 0x00, \
330 0x03, 0x01, [JPU_JPEG_SUBS_OFFSET] = 0x00, JPU_JPEG_LUM, \
331 0x02, 0x11, JPU_JPEG_CHR, 0x03, 0x11, JPU_JPEG_CHR, \
332 0xff, JPEG_MARKER_DHT, 0x00, JPU_JPEG_HDCTBL_SIZE + 0x3, \
333 JPU_JPEG_LUM | JPU_JPEG_DC, \
334 [JPU_JPEG_HDCTBL_LUM_OFFSET ... \
335 JPU_JPEG_HDCTBL_LUM_OFFSET + JPU_JPEG_HDCTBL_SIZE - 1] = 0x00, \
336 0xff, JPEG_MARKER_DHT, 0x00, JPU_JPEG_HACTBL_SIZE + 0x3, \
337 JPU_JPEG_LUM | JPU_JPEG_AC, \
338 [JPU_JPEG_HACTBL_LUM_OFFSET ... \
339 JPU_JPEG_HACTBL_LUM_OFFSET + JPU_JPEG_HACTBL_SIZE - 1] = 0x00, \
340 0xff, JPEG_MARKER_DHT, 0x00, JPU_JPEG_HDCTBL_SIZE + 0x3, \
341 JPU_JPEG_CHR | JPU_JPEG_DC, \
342 [JPU_JPEG_HDCTBL_CHR_OFFSET ... \
343 JPU_JPEG_HDCTBL_CHR_OFFSET + JPU_JPEG_HDCTBL_SIZE - 1] = 0x00, \
344 0xff, JPEG_MARKER_DHT, 0x00, JPU_JPEG_HACTBL_SIZE + 0x3, \
345 JPU_JPEG_CHR | JPU_JPEG_AC, \
346 [JPU_JPEG_HACTBL_CHR_OFFSET ... \
347 JPU_JPEG_HACTBL_CHR_OFFSET + JPU_JPEG_HACTBL_SIZE - 1] = 0x00, \
348 [JPU_JPEG_PADDING_OFFSET ... JPU_JPEG_HDR_SIZE - 1] = 0xff \
349 }
350
351 static unsigned char jpeg_hdrs[JPU_MAX_QUALITY][JPU_JPEG_HDR_SIZE] = {
352 [0 ... JPU_MAX_QUALITY - 1] = JPU_JPEG_HDR_BLOB
353 };
354
355 static const unsigned int qtbl_lum[JPU_MAX_QUALITY][QTBL_SIZE] = {
356 {
357 0x14101927, 0x322e3e44, 0x10121726, 0x26354144,
358 0x19171f26, 0x35414444, 0x27262635, 0x41444444,
359 0x32263541, 0x44444444, 0x2e354144, 0x44444444,
360 0x3e414444, 0x44444444, 0x44444444, 0x44444444
361 },
362 {
363 0x100b0b10, 0x171b1f1e, 0x0b0c0c0f, 0x1417171e,
364 0x0b0c0d10, 0x171a232f, 0x100f1017, 0x1a252f40,
365 0x1714171a, 0x27334040, 0x1b171a25, 0x33404040,
366 0x1f17232f, 0x40404040, 0x1e1e2f40, 0x40404040
367 },
368 {
369 0x0c08080c, 0x11151817, 0x0809090b, 0x0f131217,
370 0x08090a0c, 0x13141b24, 0x0c0b0c15, 0x141c2435,
371 0x110f1314, 0x1e27333b, 0x1513141c, 0x27333b3b,
372 0x18121b24, 0x333b3b3b, 0x17172435, 0x3b3b3b3b
373 },
374 {
375 0x08060608, 0x0c0e1011, 0x06060608, 0x0a0d0c0f,
376 0x06060708, 0x0d0e1218, 0x0808080e, 0x0d131823,
377 0x0c0a0d0d, 0x141a2227, 0x0e0d0e13, 0x1a222727,
378 0x100c1318, 0x22272727, 0x110f1823, 0x27272727
379 }
380 };
381
382 static const unsigned int qtbl_chr[JPU_MAX_QUALITY][QTBL_SIZE] = {
383 {
384 0x15192026, 0x36444444, 0x191c1826, 0x36444444,
385 0x2018202b, 0x42444444, 0x26262b35, 0x44444444,
386 0x36424444, 0x44444444, 0x44444444, 0x44444444,
387 0x44444444, 0x44444444, 0x44444444, 0x44444444
388 },
389 {
390 0x110f1115, 0x141a2630, 0x0f131211, 0x141a232b,
391 0x11121416, 0x1a1e2e35, 0x1511161c, 0x1e273540,
392 0x14141a1e, 0x27304040, 0x1a1a1e27, 0x303f4040,
393 0x26232e35, 0x40404040, 0x302b3540, 0x40404040
394 },
395 {
396 0x0d0b0d10, 0x14141d25, 0x0b0e0e0e, 0x10141a20,
397 0x0d0e0f11, 0x14172328, 0x100e1115, 0x171e2832,
398 0x14101417, 0x1e25323b, 0x1414171e, 0x25303b3b,
399 0x1d1a2328, 0x323b3b3b, 0x25202832, 0x3b3b3b3b
400 },
401 {
402 0x0908090b, 0x0e111318, 0x080a090b, 0x0e0d1116,
403 0x09090d0e, 0x0d0f171a, 0x0b0b0e0e, 0x0f141a21,
404 0x0e0e0d0f, 0x14182127, 0x110d0f14, 0x18202727,
405 0x1311171a, 0x21272727, 0x18161a21, 0x27272727
406 }
407 };
408
409 static const unsigned int hdctbl_lum[HDCTBL_SIZE] = {
410 0x00010501, 0x01010101, 0x01000000, 0x00000000,
411 0x00010203, 0x04050607, 0x08090a0b
412 };
413
414 static const unsigned int hdctbl_chr[HDCTBL_SIZE] = {
415 0x00010501, 0x01010101, 0x01000000, 0x00000000,
416 0x00010203, 0x04050607, 0x08090a0b
417 };
418
419 static const unsigned int hactbl_lum[HACTBL_SIZE] = {
420 0x00020103, 0x03020403, 0x05050404, 0x0000017d, 0x01020300, 0x04110512,
421 0x21314106, 0x13516107, 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
422 0x24336272, 0x82090a16, 0x1718191a, 0x25262728, 0x292a3435, 0x36373839,
423 0x3a434445, 0x46474849, 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
424 0x6a737475, 0x76777879, 0x7a838485, 0x86878889, 0x8a929394, 0x95969798,
425 0x999aa2a3, 0xa4a5a6a7, 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
426 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2, 0xe3e4e5e6, 0xe7e8e9ea,
427 0xf1f2f3f4, 0xf5f6f7f8, 0xf9fa0000
428 };
429
430 static const unsigned int hactbl_chr[HACTBL_SIZE] = {
431 0x00020103, 0x03020403, 0x05050404, 0x0000017d, 0x01020300, 0x04110512,
432 0x21314106, 0x13516107, 0x22711432, 0x8191a108, 0x2342b1c1, 0x1552d1f0,
433 0x24336272, 0x82090a16, 0x1718191a, 0x25262728, 0x292a3435, 0x36373839,
434 0x3a434445, 0x46474849, 0x4a535455, 0x56575859, 0x5a636465, 0x66676869,
435 0x6a737475, 0x76777879, 0x7a838485, 0x86878889, 0x8a929394, 0x95969798,
436 0x999aa2a3, 0xa4a5a6a7, 0xa8a9aab2, 0xb3b4b5b6, 0xb7b8b9ba, 0xc2c3c4c5,
437 0xc6c7c8c9, 0xcad2d3d4, 0xd5d6d7d8, 0xd9dae1e2, 0xe3e4e5e6, 0xe7e8e9ea,
438 0xf1f2f3f4, 0xf5f6f7f8, 0xf9fa0000
439 };
440
441 static const char *error_to_text[16] = {
442 "Normal",
443 "SOI not detected",
444 "SOF1 to SOFF detected",
445 "Subsampling not detected",
446 "SOF accuracy error",
447 "DQT accuracy error",
448 "Component error 1",
449 "Component error 2",
450 "SOF0, DQT, and DHT not detected when SOS detected",
451 "SOS not detected",
452 "EOI not detected",
453 "Restart interval data number error detected",
454 "Image size error",
455 "Last MCU data number error",
456 "Block data number error",
457 "Unknown"
458 };
459
vb2_to_jpu_buffer(struct vb2_v4l2_buffer * vb)460 static struct jpu_buffer *vb2_to_jpu_buffer(struct vb2_v4l2_buffer *vb)
461 {
462 struct v4l2_m2m_buffer *b =
463 container_of(vb, struct v4l2_m2m_buffer, vb);
464
465 return container_of(b, struct jpu_buffer, buf);
466 }
467
jpu_read(struct jpu * jpu,unsigned int reg)468 static u32 jpu_read(struct jpu *jpu, unsigned int reg)
469 {
470 return ioread32(jpu->regs + reg);
471 }
472
jpu_write(struct jpu * jpu,u32 val,unsigned int reg)473 static void jpu_write(struct jpu *jpu, u32 val, unsigned int reg)
474 {
475 iowrite32(val, jpu->regs + reg);
476 }
477
ctrl_to_ctx(struct v4l2_ctrl * c)478 static struct jpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
479 {
480 return container_of(c->handler, struct jpu_ctx, ctrl_handler);
481 }
482
fh_to_ctx(struct v4l2_fh * fh)483 static struct jpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
484 {
485 return container_of(fh, struct jpu_ctx, fh);
486 }
487
jpu_set_tbl(struct jpu * jpu,u32 reg,const unsigned int * tbl,unsigned int len)488 static void jpu_set_tbl(struct jpu *jpu, u32 reg, const unsigned int *tbl,
489 unsigned int len) {
490 unsigned int i;
491
492 for (i = 0; i < len; i++)
493 jpu_write(jpu, tbl[i], reg + (i << 2));
494 }
495
jpu_set_qtbl(struct jpu * jpu,unsigned short quality)496 static void jpu_set_qtbl(struct jpu *jpu, unsigned short quality)
497 {
498 jpu_set_tbl(jpu, JCQTBL(0), qtbl_lum[quality], QTBL_SIZE);
499 jpu_set_tbl(jpu, JCQTBL(1), qtbl_chr[quality], QTBL_SIZE);
500 }
501
jpu_set_htbl(struct jpu * jpu)502 static void jpu_set_htbl(struct jpu *jpu)
503 {
504 jpu_set_tbl(jpu, JCHTBD(0), hdctbl_lum, HDCTBL_SIZE);
505 jpu_set_tbl(jpu, JCHTBA(0), hactbl_lum, HACTBL_SIZE);
506 jpu_set_tbl(jpu, JCHTBD(1), hdctbl_chr, HDCTBL_SIZE);
507 jpu_set_tbl(jpu, JCHTBA(1), hactbl_chr, HACTBL_SIZE);
508 }
509
jpu_wait_reset(struct jpu * jpu)510 static int jpu_wait_reset(struct jpu *jpu)
511 {
512 unsigned long timeout;
513
514 timeout = jiffies + msecs_to_jiffies(JPU_RESET_TIMEOUT);
515
516 while (jpu_read(jpu, JCCMD) & JCCMD_SRST) {
517 if (time_after(jiffies, timeout)) {
518 dev_err(jpu->dev, "timed out in reset\n");
519 return -ETIMEDOUT;
520 }
521 schedule();
522 }
523
524 return 0;
525 }
526
jpu_reset(struct jpu * jpu)527 static int jpu_reset(struct jpu *jpu)
528 {
529 jpu_write(jpu, JCCMD_SRST, JCCMD);
530 return jpu_wait_reset(jpu);
531 }
532
533 /*
534 * ============================================================================
535 * video ioctl operations
536 * ============================================================================
537 */
put_qtbl(u8 * p,const u8 * qtbl)538 static void put_qtbl(u8 *p, const u8 *qtbl)
539 {
540 unsigned int i;
541
542 for (i = 0; i < ARRAY_SIZE(zigzag); i++)
543 p[i] = *(qtbl + zigzag[i]);
544 }
545
put_htbl(u8 * p,const u8 * htbl,unsigned int len)546 static void put_htbl(u8 *p, const u8 *htbl, unsigned int len)
547 {
548 unsigned int i, j;
549
550 for (i = 0; i < len; i += 4)
551 for (j = 0; j < 4 && (i + j) < len; ++j)
552 p[i + j] = htbl[i + 3 - j];
553 }
554
jpu_generate_hdr(unsigned short quality,unsigned char * p)555 static void jpu_generate_hdr(unsigned short quality, unsigned char *p)
556 {
557 put_qtbl(p + JPU_JPEG_QTBL_LUM_OFFSET, (const u8 *)qtbl_lum[quality]);
558 put_qtbl(p + JPU_JPEG_QTBL_CHR_OFFSET, (const u8 *)qtbl_chr[quality]);
559
560 put_htbl(p + JPU_JPEG_HDCTBL_LUM_OFFSET, (const u8 *)hdctbl_lum,
561 JPU_JPEG_HDCTBL_SIZE);
562 put_htbl(p + JPU_JPEG_HACTBL_LUM_OFFSET, (const u8 *)hactbl_lum,
563 JPU_JPEG_HACTBL_SIZE);
564
565 put_htbl(p + JPU_JPEG_HDCTBL_CHR_OFFSET, (const u8 *)hdctbl_chr,
566 JPU_JPEG_HDCTBL_SIZE);
567 put_htbl(p + JPU_JPEG_HACTBL_CHR_OFFSET, (const u8 *)hactbl_chr,
568 JPU_JPEG_HACTBL_SIZE);
569 }
570
get_byte(struct jpeg_buffer * buf)571 static int get_byte(struct jpeg_buffer *buf)
572 {
573 if (buf->curr >= buf->end)
574 return -1;
575
576 return *(u8 *)buf->curr++;
577 }
578
get_word_be(struct jpeg_buffer * buf,unsigned int * word)579 static int get_word_be(struct jpeg_buffer *buf, unsigned int *word)
580 {
581 if (buf->end - buf->curr < 2)
582 return -1;
583
584 *word = get_unaligned_be16(buf->curr);
585 buf->curr += 2;
586
587 return 0;
588 }
589
skip(struct jpeg_buffer * buf,unsigned long len)590 static void skip(struct jpeg_buffer *buf, unsigned long len)
591 {
592 buf->curr += min((unsigned long)(buf->end - buf->curr), len);
593 }
594
jpu_parse_hdr(void * buffer,unsigned long size,unsigned int * width,unsigned int * height)595 static u8 jpu_parse_hdr(void *buffer, unsigned long size, unsigned int *width,
596 unsigned int *height)
597 {
598 struct jpeg_buffer jpeg_buffer;
599 unsigned int word;
600 bool soi = false;
601
602 jpeg_buffer.end = buffer + size;
603 jpeg_buffer.curr = buffer;
604
605 /*
606 * basic size check and EOI - we don't want to let JPU cross
607 * buffer bounds in any case. Hope it's stopping by EOI.
608 */
609 if (size < JPU_JPEG_MIN_SIZE ||
610 *(u8 *)(buffer + size - 1) != JPEG_MARKER_EOI)
611 return 0;
612
613 for (;;) {
614 int c;
615
616 /* skip preceding filler bytes */
617 do
618 c = get_byte(&jpeg_buffer);
619 while (c == 0xff || c == 0);
620
621 if (!soi && c == JPEG_MARKER_SOI) {
622 soi = true;
623 continue;
624 } else if (soi != (c != JPEG_MARKER_SOI))
625 return 0;
626
627 switch (c) {
628 case JPEG_MARKER_SOF0: /* SOF0: baseline JPEG */
629 skip(&jpeg_buffer, 3); /* segment length and bpp */
630 if (get_word_be(&jpeg_buffer, height) ||
631 get_word_be(&jpeg_buffer, width) ||
632 get_byte(&jpeg_buffer) != 3) /* YCbCr only */
633 return 0;
634
635 skip(&jpeg_buffer, 1);
636 return get_byte(&jpeg_buffer);
637 case JPEG_MARKER_DHT:
638 case JPEG_MARKER_DQT:
639 case JPEG_MARKER_COM:
640 case JPEG_MARKER_DRI:
641 case JPEG_MARKER_APP0 ... JPEG_MARKER_APP0 + 0x0f:
642 if (get_word_be(&jpeg_buffer, &word))
643 return 0;
644 skip(&jpeg_buffer, (long)word - 2);
645 break;
646 case 0:
647 break;
648 default:
649 return 0;
650 }
651 }
652
653 return 0;
654 }
655
jpu_querycap(struct file * file,void * priv,struct v4l2_capability * cap)656 static int jpu_querycap(struct file *file, void *priv,
657 struct v4l2_capability *cap)
658 {
659 struct jpu_ctx *ctx = fh_to_ctx(priv);
660
661 if (ctx->encoder)
662 strscpy(cap->card, DRV_NAME " encoder", sizeof(cap->card));
663 else
664 strscpy(cap->card, DRV_NAME " decoder", sizeof(cap->card));
665
666 strscpy(cap->driver, DRV_NAME, sizeof(cap->driver));
667 memset(cap->reserved, 0, sizeof(cap->reserved));
668
669 return 0;
670 }
671
jpu_find_format(bool encoder,u32 pixelformat,unsigned int fmt_type)672 static struct jpu_fmt *jpu_find_format(bool encoder, u32 pixelformat,
673 unsigned int fmt_type)
674 {
675 unsigned int i, fmt_flag;
676
677 if (encoder)
678 fmt_flag = fmt_type == JPU_FMT_TYPE_OUTPUT ? JPU_ENC_OUTPUT :
679 JPU_ENC_CAPTURE;
680 else
681 fmt_flag = fmt_type == JPU_FMT_TYPE_OUTPUT ? JPU_DEC_OUTPUT :
682 JPU_DEC_CAPTURE;
683
684 for (i = 0; i < ARRAY_SIZE(jpu_formats); i++) {
685 struct jpu_fmt *fmt = &jpu_formats[i];
686
687 if (fmt->fourcc == pixelformat && fmt->types & fmt_flag)
688 return fmt;
689 }
690
691 return NULL;
692 }
693
jpu_enum_fmt(struct v4l2_fmtdesc * f,u32 type)694 static int jpu_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
695 {
696 unsigned int i, num = 0;
697
698 for (i = 0; i < ARRAY_SIZE(jpu_formats); ++i) {
699 if (jpu_formats[i].types & type) {
700 if (num == f->index)
701 break;
702 ++num;
703 }
704 }
705
706 if (i >= ARRAY_SIZE(jpu_formats))
707 return -EINVAL;
708
709 f->pixelformat = jpu_formats[i].fourcc;
710
711 return 0;
712 }
713
jpu_enum_fmt_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)714 static int jpu_enum_fmt_cap(struct file *file, void *priv,
715 struct v4l2_fmtdesc *f)
716 {
717 struct jpu_ctx *ctx = fh_to_ctx(priv);
718
719 return jpu_enum_fmt(f, ctx->encoder ? JPU_ENC_CAPTURE :
720 JPU_DEC_CAPTURE);
721 }
722
jpu_enum_fmt_out(struct file * file,void * priv,struct v4l2_fmtdesc * f)723 static int jpu_enum_fmt_out(struct file *file, void *priv,
724 struct v4l2_fmtdesc *f)
725 {
726 struct jpu_ctx *ctx = fh_to_ctx(priv);
727
728 return jpu_enum_fmt(f, ctx->encoder ? JPU_ENC_OUTPUT : JPU_DEC_OUTPUT);
729 }
730
jpu_get_q_data(struct jpu_ctx * ctx,enum v4l2_buf_type type)731 static struct jpu_q_data *jpu_get_q_data(struct jpu_ctx *ctx,
732 enum v4l2_buf_type type)
733 {
734 if (V4L2_TYPE_IS_OUTPUT(type))
735 return &ctx->out_q;
736 else
737 return &ctx->cap_q;
738 }
739
jpu_bound_align_image(u32 * w,unsigned int w_min,unsigned int w_max,unsigned int w_align,u32 * h,unsigned int h_min,unsigned int h_max,unsigned int h_align)740 static void jpu_bound_align_image(u32 *w, unsigned int w_min,
741 unsigned int w_max, unsigned int w_align,
742 u32 *h, unsigned int h_min,
743 unsigned int h_max, unsigned int h_align)
744 {
745 unsigned int width, height, w_step, h_step;
746
747 width = *w;
748 height = *h;
749
750 w_step = 1U << w_align;
751 h_step = 1U << h_align;
752 v4l_bound_align_image(w, w_min, w_max, w_align, h, h_min, h_max,
753 h_align, 3);
754
755 if (*w < width && *w + w_step < w_max)
756 *w += w_step;
757 if (*h < height && *h + h_step < h_max)
758 *h += h_step;
759 }
760
__jpu_try_fmt(struct jpu_ctx * ctx,struct jpu_fmt ** fmtinfo,struct v4l2_pix_format_mplane * pix,enum v4l2_buf_type type)761 static int __jpu_try_fmt(struct jpu_ctx *ctx, struct jpu_fmt **fmtinfo,
762 struct v4l2_pix_format_mplane *pix,
763 enum v4l2_buf_type type)
764 {
765 struct jpu_fmt *fmt;
766 unsigned int f_type, w, h;
767
768 f_type = V4L2_TYPE_IS_OUTPUT(type) ? JPU_FMT_TYPE_OUTPUT :
769 JPU_FMT_TYPE_CAPTURE;
770
771 fmt = jpu_find_format(ctx->encoder, pix->pixelformat, f_type);
772 if (!fmt) {
773 unsigned int pixelformat;
774
775 dev_dbg(ctx->jpu->dev, "unknown format; set default format\n");
776 if (ctx->encoder)
777 pixelformat = f_type == JPU_FMT_TYPE_OUTPUT ?
778 V4L2_PIX_FMT_NV16M : V4L2_PIX_FMT_JPEG;
779 else
780 pixelformat = f_type == JPU_FMT_TYPE_CAPTURE ?
781 V4L2_PIX_FMT_NV16M : V4L2_PIX_FMT_JPEG;
782 fmt = jpu_find_format(ctx->encoder, pixelformat, f_type);
783 }
784
785 pix->pixelformat = fmt->fourcc;
786 pix->colorspace = fmt->colorspace;
787 pix->field = V4L2_FIELD_NONE;
788 pix->num_planes = fmt->num_planes;
789
790 jpu_bound_align_image(&pix->width, JPU_WIDTH_MIN, JPU_WIDTH_MAX,
791 fmt->h_align, &pix->height, JPU_HEIGHT_MIN,
792 JPU_HEIGHT_MAX, fmt->v_align);
793
794 w = pix->width;
795 h = pix->height;
796
797 if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
798 /* ignore userspaces's sizeimage for encoding */
799 if (pix->plane_fmt[0].sizeimage <= 0 || ctx->encoder)
800 pix->plane_fmt[0].sizeimage = JPU_JPEG_HDR_SIZE +
801 (JPU_JPEG_MAX_BYTES_PER_PIXEL * w * h);
802 pix->plane_fmt[0].bytesperline = 0;
803 } else {
804 unsigned int i, bpl = 0;
805
806 for (i = 0; i < pix->num_planes; ++i)
807 bpl = max(bpl, pix->plane_fmt[i].bytesperline);
808
809 bpl = clamp_t(unsigned int, bpl, w, JPU_WIDTH_MAX);
810 bpl = round_up(bpl, JPU_MEMALIGN);
811
812 for (i = 0; i < pix->num_planes; ++i) {
813 pix->plane_fmt[i].bytesperline = bpl;
814 pix->plane_fmt[i].sizeimage = bpl * h * fmt->bpp[i] / 8;
815 }
816 }
817
818 if (fmtinfo)
819 *fmtinfo = fmt;
820
821 return 0;
822 }
823
jpu_try_fmt(struct file * file,void * priv,struct v4l2_format * f)824 static int jpu_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
825 {
826 struct jpu_ctx *ctx = fh_to_ctx(priv);
827
828 if (!v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type))
829 return -EINVAL;
830
831 return __jpu_try_fmt(ctx, NULL, &f->fmt.pix_mp, f->type);
832 }
833
jpu_s_fmt(struct file * file,void * priv,struct v4l2_format * f)834 static int jpu_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
835 {
836 struct vb2_queue *vq;
837 struct jpu_ctx *ctx = fh_to_ctx(priv);
838 struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
839 struct jpu_fmt *fmtinfo;
840 struct jpu_q_data *q_data;
841 int ret;
842
843 vq = v4l2_m2m_get_vq(m2m_ctx, f->type);
844 if (!vq)
845 return -EINVAL;
846
847 if (vb2_is_busy(vq)) {
848 v4l2_err(&ctx->jpu->v4l2_dev, "%s queue busy\n", __func__);
849 return -EBUSY;
850 }
851
852 ret = __jpu_try_fmt(ctx, &fmtinfo, &f->fmt.pix_mp, f->type);
853 if (ret < 0)
854 return ret;
855
856 q_data = jpu_get_q_data(ctx, f->type);
857
858 q_data->format = f->fmt.pix_mp;
859 q_data->fmtinfo = fmtinfo;
860
861 return 0;
862 }
863
jpu_g_fmt(struct file * file,void * priv,struct v4l2_format * f)864 static int jpu_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
865 {
866 struct jpu_q_data *q_data;
867 struct jpu_ctx *ctx = fh_to_ctx(priv);
868
869 if (!v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type))
870 return -EINVAL;
871
872 q_data = jpu_get_q_data(ctx, f->type);
873 f->fmt.pix_mp = q_data->format;
874
875 return 0;
876 }
877
878 /*
879 * V4L2 controls
880 */
jpu_s_ctrl(struct v4l2_ctrl * ctrl)881 static int jpu_s_ctrl(struct v4l2_ctrl *ctrl)
882 {
883 struct jpu_ctx *ctx = ctrl_to_ctx(ctrl);
884 unsigned long flags;
885
886 spin_lock_irqsave(&ctx->jpu->lock, flags);
887 if (ctrl->id == V4L2_CID_JPEG_COMPRESSION_QUALITY)
888 ctx->compr_quality = ctrl->val;
889 spin_unlock_irqrestore(&ctx->jpu->lock, flags);
890
891 return 0;
892 }
893
894 static const struct v4l2_ctrl_ops jpu_ctrl_ops = {
895 .s_ctrl = jpu_s_ctrl,
896 };
897
jpu_streamon(struct file * file,void * priv,enum v4l2_buf_type type)898 static int jpu_streamon(struct file *file, void *priv, enum v4l2_buf_type type)
899 {
900 struct jpu_ctx *ctx = fh_to_ctx(priv);
901 struct jpu_q_data *src_q_data, *dst_q_data, *orig, adj, *ref;
902 enum v4l2_buf_type adj_type;
903
904 src_q_data = jpu_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
905 dst_q_data = jpu_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
906
907 if (ctx->encoder) {
908 adj = *src_q_data;
909 orig = src_q_data;
910 ref = dst_q_data;
911 adj_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
912 } else {
913 adj = *dst_q_data;
914 orig = dst_q_data;
915 ref = src_q_data;
916 adj_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
917 }
918
919 adj.format.width = ref->format.width;
920 adj.format.height = ref->format.height;
921
922 __jpu_try_fmt(ctx, NULL, &adj.format, adj_type);
923
924 if (adj.format.width != orig->format.width ||
925 adj.format.height != orig->format.height) {
926 dev_err(ctx->jpu->dev, "src and dst formats do not match.\n");
927 /* maybe we can return -EPIPE here? */
928 return -EINVAL;
929 }
930
931 return v4l2_m2m_streamon(file, ctx->fh.m2m_ctx, type);
932 }
933
934 static const struct v4l2_ioctl_ops jpu_ioctl_ops = {
935 .vidioc_querycap = jpu_querycap,
936
937 .vidioc_enum_fmt_vid_cap = jpu_enum_fmt_cap,
938 .vidioc_enum_fmt_vid_out = jpu_enum_fmt_out,
939 .vidioc_g_fmt_vid_cap_mplane = jpu_g_fmt,
940 .vidioc_g_fmt_vid_out_mplane = jpu_g_fmt,
941 .vidioc_try_fmt_vid_cap_mplane = jpu_try_fmt,
942 .vidioc_try_fmt_vid_out_mplane = jpu_try_fmt,
943 .vidioc_s_fmt_vid_cap_mplane = jpu_s_fmt,
944 .vidioc_s_fmt_vid_out_mplane = jpu_s_fmt,
945
946 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
947 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
948 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
949 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
950 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
951 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
952
953 .vidioc_streamon = jpu_streamon,
954 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
955
956 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
957 .vidioc_unsubscribe_event = v4l2_event_unsubscribe
958 };
959
jpu_controls_create(struct jpu_ctx * ctx)960 static int jpu_controls_create(struct jpu_ctx *ctx)
961 {
962 struct v4l2_ctrl *ctrl;
963 int ret;
964
965 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1);
966
967 ctrl = v4l2_ctrl_new_std(&ctx->ctrl_handler, &jpu_ctrl_ops,
968 V4L2_CID_JPEG_COMPRESSION_QUALITY,
969 0, JPU_MAX_QUALITY - 1, 1, 0);
970
971 if (ctx->ctrl_handler.error) {
972 ret = ctx->ctrl_handler.error;
973 goto error_free;
974 }
975
976 if (!ctx->encoder)
977 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
978 V4L2_CTRL_FLAG_READ_ONLY;
979
980 ret = v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
981 if (ret < 0)
982 goto error_free;
983
984 return 0;
985
986 error_free:
987 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
988 return ret;
989 }
990
991 /*
992 * ============================================================================
993 * Queue operations
994 * ============================================================================
995 */
jpu_queue_setup(struct vb2_queue * vq,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])996 static int jpu_queue_setup(struct vb2_queue *vq,
997 unsigned int *nbuffers, unsigned int *nplanes,
998 unsigned int sizes[], struct device *alloc_devs[])
999 {
1000 struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
1001 struct jpu_q_data *q_data;
1002 unsigned int i;
1003
1004 q_data = jpu_get_q_data(ctx, vq->type);
1005
1006 if (*nplanes) {
1007 if (*nplanes != q_data->format.num_planes)
1008 return -EINVAL;
1009
1010 for (i = 0; i < *nplanes; i++) {
1011 unsigned int q_size = q_data->format.plane_fmt[i].sizeimage;
1012
1013 if (sizes[i] < q_size)
1014 return -EINVAL;
1015 }
1016 return 0;
1017 }
1018
1019 *nplanes = q_data->format.num_planes;
1020
1021 for (i = 0; i < *nplanes; i++)
1022 sizes[i] = q_data->format.plane_fmt[i].sizeimage;
1023
1024 return 0;
1025 }
1026
jpu_buf_prepare(struct vb2_buffer * vb)1027 static int jpu_buf_prepare(struct vb2_buffer *vb)
1028 {
1029 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1030 struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1031 struct jpu_q_data *q_data;
1032 unsigned int i;
1033
1034 q_data = jpu_get_q_data(ctx, vb->vb2_queue->type);
1035
1036 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1037 if (vbuf->field == V4L2_FIELD_ANY)
1038 vbuf->field = V4L2_FIELD_NONE;
1039 if (vbuf->field != V4L2_FIELD_NONE) {
1040 dev_err(ctx->jpu->dev, "%s field isn't supported\n",
1041 __func__);
1042 return -EINVAL;
1043 }
1044 }
1045
1046 for (i = 0; i < q_data->format.num_planes; i++) {
1047 unsigned long size = q_data->format.plane_fmt[i].sizeimage;
1048
1049 if (vb2_plane_size(vb, i) < size) {
1050 dev_err(ctx->jpu->dev,
1051 "%s: data will not fit into plane (%lu < %lu)\n",
1052 __func__, vb2_plane_size(vb, i), size);
1053 return -EINVAL;
1054 }
1055
1056 /* decoder capture queue */
1057 if (!ctx->encoder && V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type))
1058 vb2_set_plane_payload(vb, i, size);
1059 }
1060
1061 return 0;
1062 }
1063
jpu_buf_queue(struct vb2_buffer * vb)1064 static void jpu_buf_queue(struct vb2_buffer *vb)
1065 {
1066 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1067 struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1068
1069 if (!ctx->encoder && V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1070 struct jpu_buffer *jpu_buf = vb2_to_jpu_buffer(vbuf);
1071 struct jpu_q_data *q_data, adjust;
1072 void *buffer = vb2_plane_vaddr(vb, 0);
1073 unsigned long buf_size = vb2_get_plane_payload(vb, 0);
1074 unsigned int width, height;
1075
1076 u8 subsampling = jpu_parse_hdr(buffer, buf_size, &width,
1077 &height);
1078
1079 /* check if JPEG data basic parsing was successful */
1080 if (subsampling != JPU_JPEG_422 && subsampling != JPU_JPEG_420)
1081 goto format_error;
1082
1083 q_data = &ctx->out_q;
1084
1085 adjust = *q_data;
1086 adjust.format.width = width;
1087 adjust.format.height = height;
1088
1089 __jpu_try_fmt(ctx, &adjust.fmtinfo, &adjust.format,
1090 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
1091
1092 if (adjust.format.width != q_data->format.width ||
1093 adjust.format.height != q_data->format.height)
1094 goto format_error;
1095
1096 /*
1097 * keep subsampling in buffer to check it
1098 * for compatibility in device_run
1099 */
1100 jpu_buf->subsampling = subsampling;
1101 }
1102
1103 if (ctx->fh.m2m_ctx)
1104 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1105
1106 return;
1107
1108 format_error:
1109 dev_err(ctx->jpu->dev, "incompatible or corrupted JPEG data\n");
1110 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
1111 }
1112
jpu_buf_finish(struct vb2_buffer * vb)1113 static void jpu_buf_finish(struct vb2_buffer *vb)
1114 {
1115 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1116 struct jpu_buffer *jpu_buf = vb2_to_jpu_buffer(vbuf);
1117 struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1118 struct jpu_q_data *q_data = &ctx->out_q;
1119 enum v4l2_buf_type type = vb->vb2_queue->type;
1120 u8 *buffer;
1121
1122 if (vb->state == VB2_BUF_STATE_DONE)
1123 vbuf->sequence = jpu_get_q_data(ctx, type)->sequence++;
1124
1125 if (!ctx->encoder || vb->state != VB2_BUF_STATE_DONE ||
1126 V4L2_TYPE_IS_OUTPUT(type))
1127 return;
1128
1129 buffer = vb2_plane_vaddr(vb, 0);
1130
1131 memcpy(buffer, jpeg_hdrs[jpu_buf->compr_quality], JPU_JPEG_HDR_SIZE);
1132 *(__be16 *)(buffer + JPU_JPEG_HEIGHT_OFFSET) =
1133 cpu_to_be16(q_data->format.height);
1134 *(__be16 *)(buffer + JPU_JPEG_WIDTH_OFFSET) =
1135 cpu_to_be16(q_data->format.width);
1136 *(buffer + JPU_JPEG_SUBS_OFFSET) = q_data->fmtinfo->subsampling;
1137 }
1138
jpu_start_streaming(struct vb2_queue * vq,unsigned count)1139 static int jpu_start_streaming(struct vb2_queue *vq, unsigned count)
1140 {
1141 struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
1142 struct jpu_q_data *q_data = jpu_get_q_data(ctx, vq->type);
1143
1144 q_data->sequence = 0;
1145 return 0;
1146 }
1147
jpu_stop_streaming(struct vb2_queue * vq)1148 static void jpu_stop_streaming(struct vb2_queue *vq)
1149 {
1150 struct jpu_ctx *ctx = vb2_get_drv_priv(vq);
1151 struct vb2_v4l2_buffer *vb;
1152 unsigned long flags;
1153
1154 for (;;) {
1155 if (V4L2_TYPE_IS_OUTPUT(vq->type))
1156 vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1157 else
1158 vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1159 if (vb == NULL)
1160 return;
1161 spin_lock_irqsave(&ctx->jpu->lock, flags);
1162 v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR);
1163 spin_unlock_irqrestore(&ctx->jpu->lock, flags);
1164 }
1165 }
1166
1167 static const struct vb2_ops jpu_qops = {
1168 .queue_setup = jpu_queue_setup,
1169 .buf_prepare = jpu_buf_prepare,
1170 .buf_queue = jpu_buf_queue,
1171 .buf_finish = jpu_buf_finish,
1172 .start_streaming = jpu_start_streaming,
1173 .stop_streaming = jpu_stop_streaming,
1174 .wait_prepare = vb2_ops_wait_prepare,
1175 .wait_finish = vb2_ops_wait_finish,
1176 };
1177
jpu_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1178 static int jpu_queue_init(void *priv, struct vb2_queue *src_vq,
1179 struct vb2_queue *dst_vq)
1180 {
1181 struct jpu_ctx *ctx = priv;
1182 int ret;
1183
1184 memset(src_vq, 0, sizeof(*src_vq));
1185 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1186 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1187 src_vq->drv_priv = ctx;
1188 src_vq->buf_struct_size = sizeof(struct jpu_buffer);
1189 src_vq->ops = &jpu_qops;
1190 src_vq->mem_ops = &vb2_dma_contig_memops;
1191 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1192 src_vq->lock = &ctx->jpu->mutex;
1193 src_vq->dev = ctx->jpu->v4l2_dev.dev;
1194
1195 ret = vb2_queue_init(src_vq);
1196 if (ret)
1197 return ret;
1198
1199 memset(dst_vq, 0, sizeof(*dst_vq));
1200 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1201 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1202 dst_vq->drv_priv = ctx;
1203 dst_vq->buf_struct_size = sizeof(struct jpu_buffer);
1204 dst_vq->ops = &jpu_qops;
1205 dst_vq->mem_ops = &vb2_dma_contig_memops;
1206 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1207 dst_vq->lock = &ctx->jpu->mutex;
1208 dst_vq->dev = ctx->jpu->v4l2_dev.dev;
1209
1210 return vb2_queue_init(dst_vq);
1211 }
1212
1213 /*
1214 * ============================================================================
1215 * Device file operations
1216 * ============================================================================
1217 */
jpu_open(struct file * file)1218 static int jpu_open(struct file *file)
1219 {
1220 struct jpu *jpu = video_drvdata(file);
1221 struct video_device *vfd = video_devdata(file);
1222 struct jpu_ctx *ctx;
1223 int ret;
1224
1225 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1226 if (!ctx)
1227 return -ENOMEM;
1228
1229 v4l2_fh_init(&ctx->fh, vfd);
1230 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
1231 file->private_data = &ctx->fh;
1232 v4l2_fh_add(&ctx->fh);
1233
1234 ctx->jpu = jpu;
1235 ctx->encoder = vfd == &jpu->vfd_encoder;
1236
1237 __jpu_try_fmt(ctx, &ctx->out_q.fmtinfo, &ctx->out_q.format,
1238 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
1239 __jpu_try_fmt(ctx, &ctx->cap_q.fmtinfo, &ctx->cap_q.format,
1240 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
1241
1242 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpu->m2m_dev, ctx, jpu_queue_init);
1243 if (IS_ERR(ctx->fh.m2m_ctx)) {
1244 ret = PTR_ERR(ctx->fh.m2m_ctx);
1245 goto v4l_prepare_rollback;
1246 }
1247
1248 ret = jpu_controls_create(ctx);
1249 if (ret < 0)
1250 goto v4l_prepare_rollback;
1251
1252 if (mutex_lock_interruptible(&jpu->mutex)) {
1253 ret = -ERESTARTSYS;
1254 goto v4l_prepare_rollback;
1255 }
1256
1257 if (jpu->ref_count == 0) {
1258 ret = clk_prepare_enable(jpu->clk);
1259 if (ret < 0)
1260 goto device_prepare_rollback;
1261 /* ...issue software reset */
1262 ret = jpu_reset(jpu);
1263 if (ret)
1264 goto jpu_reset_rollback;
1265 }
1266
1267 jpu->ref_count++;
1268
1269 mutex_unlock(&jpu->mutex);
1270 return 0;
1271
1272 jpu_reset_rollback:
1273 clk_disable_unprepare(jpu->clk);
1274 device_prepare_rollback:
1275 mutex_unlock(&jpu->mutex);
1276 v4l_prepare_rollback:
1277 v4l2_fh_del(&ctx->fh);
1278 v4l2_fh_exit(&ctx->fh);
1279 kfree(ctx);
1280 return ret;
1281 }
1282
jpu_release(struct file * file)1283 static int jpu_release(struct file *file)
1284 {
1285 struct jpu *jpu = video_drvdata(file);
1286 struct jpu_ctx *ctx = fh_to_ctx(file->private_data);
1287
1288 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1289 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
1290 v4l2_fh_del(&ctx->fh);
1291 v4l2_fh_exit(&ctx->fh);
1292 kfree(ctx);
1293
1294 mutex_lock(&jpu->mutex);
1295 if (--jpu->ref_count == 0)
1296 clk_disable_unprepare(jpu->clk);
1297 mutex_unlock(&jpu->mutex);
1298
1299 return 0;
1300 }
1301
1302 static const struct v4l2_file_operations jpu_fops = {
1303 .owner = THIS_MODULE,
1304 .open = jpu_open,
1305 .release = jpu_release,
1306 .unlocked_ioctl = video_ioctl2,
1307 .poll = v4l2_m2m_fop_poll,
1308 .mmap = v4l2_m2m_fop_mmap,
1309 };
1310
1311 /*
1312 * ============================================================================
1313 * mem2mem callbacks
1314 * ============================================================================
1315 */
jpu_cleanup(struct jpu_ctx * ctx,bool reset)1316 static void jpu_cleanup(struct jpu_ctx *ctx, bool reset)
1317 {
1318 /* remove current buffers and finish job */
1319 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1320 unsigned long flags;
1321
1322 spin_lock_irqsave(&ctx->jpu->lock, flags);
1323
1324 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1325 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1326
1327 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
1328 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
1329
1330 /* ...and give it a chance on next run */
1331 if (reset)
1332 jpu_write(ctx->jpu, JCCMD_SRST, JCCMD);
1333
1334 spin_unlock_irqrestore(&ctx->jpu->lock, flags);
1335
1336 v4l2_m2m_job_finish(ctx->jpu->m2m_dev, ctx->fh.m2m_ctx);
1337 }
1338
jpu_device_run(void * priv)1339 static void jpu_device_run(void *priv)
1340 {
1341 struct jpu_ctx *ctx = priv;
1342 struct jpu *jpu = ctx->jpu;
1343 struct jpu_buffer *jpu_buf;
1344 struct jpu_q_data *q_data;
1345 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1346 unsigned int w, h, bpl;
1347 unsigned char num_planes, subsampling;
1348 unsigned long flags;
1349
1350 /* ...wait until module reset completes; we have mutex locked here */
1351 if (jpu_wait_reset(jpu)) {
1352 jpu_cleanup(ctx, true);
1353 return;
1354 }
1355
1356 spin_lock_irqsave(&ctx->jpu->lock, flags);
1357
1358 jpu->curr = ctx;
1359
1360 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
1361 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
1362
1363 if (ctx->encoder) {
1364 jpu_buf = vb2_to_jpu_buffer(dst_buf);
1365 q_data = &ctx->out_q;
1366 } else {
1367 jpu_buf = vb2_to_jpu_buffer(src_buf);
1368 q_data = &ctx->cap_q;
1369 }
1370
1371 w = q_data->format.width;
1372 h = q_data->format.height;
1373 bpl = q_data->format.plane_fmt[0].bytesperline;
1374 num_planes = q_data->fmtinfo->num_planes;
1375 subsampling = q_data->fmtinfo->subsampling;
1376
1377 if (ctx->encoder) {
1378 unsigned long src_1_addr, src_2_addr, dst_addr;
1379 unsigned int redu, inft;
1380
1381 dst_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
1382 src_1_addr =
1383 vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
1384 if (num_planes > 1)
1385 src_2_addr = vb2_dma_contig_plane_dma_addr(
1386 &src_buf->vb2_buf, 1);
1387 else
1388 src_2_addr = src_1_addr + w * h;
1389
1390 jpu_buf->compr_quality = ctx->compr_quality;
1391
1392 if (subsampling == JPU_JPEG_420) {
1393 redu = JCMOD_REDU_420;
1394 inft = JIFECNT_INFT_420;
1395 } else {
1396 redu = JCMOD_REDU_422;
1397 inft = JIFECNT_INFT_422;
1398 }
1399
1400 /* only no marker mode works for encoding */
1401 jpu_write(jpu, JCMOD_DSP_ENC | JCMOD_PCTR | redu |
1402 JCMOD_MSKIP_ENABLE, JCMOD);
1403
1404 jpu_write(jpu, JIFECNT_SWAP_WB | inft, JIFECNT);
1405 jpu_write(jpu, JIFDCNT_SWAP_WB, JIFDCNT);
1406 jpu_write(jpu, JINTE_TRANSF_COMPL, JINTE);
1407
1408 /* Y and C components source addresses */
1409 jpu_write(jpu, src_1_addr, JIFESYA1);
1410 jpu_write(jpu, src_2_addr, JIFESCA1);
1411
1412 /* memory width */
1413 jpu_write(jpu, bpl, JIFESMW);
1414
1415 jpu_write(jpu, (w >> 8) & JCSZ_MASK, JCHSZU);
1416 jpu_write(jpu, w & JCSZ_MASK, JCHSZD);
1417
1418 jpu_write(jpu, (h >> 8) & JCSZ_MASK, JCVSZU);
1419 jpu_write(jpu, h & JCSZ_MASK, JCVSZD);
1420
1421 jpu_write(jpu, w, JIFESHSZ);
1422 jpu_write(jpu, h, JIFESVSZ);
1423
1424 jpu_write(jpu, dst_addr + JPU_JPEG_HDR_SIZE, JIFEDA1);
1425
1426 jpu_write(jpu, 0 << JCQTN_SHIFT(1) | 1 << JCQTN_SHIFT(2) |
1427 1 << JCQTN_SHIFT(3), JCQTN);
1428
1429 jpu_write(jpu, 0 << JCHTN_AC_SHIFT(1) | 0 << JCHTN_DC_SHIFT(1) |
1430 1 << JCHTN_AC_SHIFT(2) | 1 << JCHTN_DC_SHIFT(2) |
1431 1 << JCHTN_AC_SHIFT(3) | 1 << JCHTN_DC_SHIFT(3),
1432 JCHTN);
1433
1434 jpu_set_qtbl(jpu, ctx->compr_quality);
1435 jpu_set_htbl(jpu);
1436 } else {
1437 unsigned long src_addr, dst_1_addr, dst_2_addr;
1438
1439 if (jpu_buf->subsampling != subsampling) {
1440 dev_err(ctx->jpu->dev,
1441 "src and dst formats do not match.\n");
1442 spin_unlock_irqrestore(&ctx->jpu->lock, flags);
1443 jpu_cleanup(ctx, false);
1444 return;
1445 }
1446
1447 src_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
1448 dst_1_addr =
1449 vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
1450 if (q_data->fmtinfo->num_planes > 1)
1451 dst_2_addr = vb2_dma_contig_plane_dma_addr(
1452 &dst_buf->vb2_buf, 1);
1453 else
1454 dst_2_addr = dst_1_addr + w * h;
1455
1456 /* ...set up decoder operation */
1457 jpu_write(jpu, JCMOD_DSP_DEC | JCMOD_PCTR, JCMOD);
1458 jpu_write(jpu, JIFECNT_SWAP_WB, JIFECNT);
1459 jpu_write(jpu, JIFDCNT_SWAP_WB, JIFDCNT);
1460
1461 /* ...enable interrupts on transfer completion and d-g error */
1462 jpu_write(jpu, JINTE_TRANSF_COMPL | JINTE_ERR, JINTE);
1463
1464 /* ...set source/destination addresses of encoded data */
1465 jpu_write(jpu, src_addr, JIFDSA1);
1466 jpu_write(jpu, dst_1_addr, JIFDDYA1);
1467 jpu_write(jpu, dst_2_addr, JIFDDCA1);
1468
1469 jpu_write(jpu, bpl, JIFDDMW);
1470 }
1471
1472 /* ...start encoder/decoder operation */
1473 jpu_write(jpu, JCCMD_JSRT, JCCMD);
1474
1475 spin_unlock_irqrestore(&ctx->jpu->lock, flags);
1476 }
1477
1478 static const struct v4l2_m2m_ops jpu_m2m_ops = {
1479 .device_run = jpu_device_run,
1480 };
1481
1482 /*
1483 * ============================================================================
1484 * IRQ handler
1485 * ============================================================================
1486 */
jpu_irq_handler(int irq,void * dev_id)1487 static irqreturn_t jpu_irq_handler(int irq, void *dev_id)
1488 {
1489 struct jpu *jpu = dev_id;
1490 struct jpu_ctx *curr_ctx;
1491 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1492 unsigned int int_status;
1493
1494 int_status = jpu_read(jpu, JINTS);
1495
1496 /* ...spurious interrupt */
1497 if (!((JINTS_TRANSF_COMPL | JINTS_PROCESS_COMPL | JINTS_ERR) &
1498 int_status))
1499 return IRQ_NONE;
1500
1501 /* ...clear interrupts */
1502 jpu_write(jpu, ~(int_status & JINTS_MASK), JINTS);
1503 if (int_status & (JINTS_ERR | JINTS_PROCESS_COMPL))
1504 jpu_write(jpu, JCCMD_JEND, JCCMD);
1505
1506 spin_lock(&jpu->lock);
1507
1508 if ((int_status & JINTS_PROCESS_COMPL) &&
1509 !(int_status & JINTS_TRANSF_COMPL))
1510 goto handled;
1511
1512 curr_ctx = v4l2_m2m_get_curr_priv(jpu->m2m_dev);
1513 if (!curr_ctx) {
1514 /* ...instance is not running */
1515 dev_err(jpu->dev, "no active context for m2m\n");
1516 goto handled;
1517 }
1518
1519 src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
1520 dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
1521
1522 if (int_status & JINTS_TRANSF_COMPL) {
1523 if (curr_ctx->encoder) {
1524 unsigned long payload_size = jpu_read(jpu, JCDTCU) << 16
1525 | jpu_read(jpu, JCDTCM) << 8
1526 | jpu_read(jpu, JCDTCD);
1527 vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
1528 payload_size + JPU_JPEG_HDR_SIZE);
1529 }
1530
1531 dst_buf->field = src_buf->field;
1532 dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
1533 if (src_buf->flags & V4L2_BUF_FLAG_TIMECODE)
1534 dst_buf->timecode = src_buf->timecode;
1535 dst_buf->flags = src_buf->flags &
1536 (V4L2_BUF_FLAG_TIMECODE | V4L2_BUF_FLAG_KEYFRAME |
1537 V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME |
1538 V4L2_BUF_FLAG_TSTAMP_SRC_MASK);
1539
1540 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1541 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
1542 } else if (int_status & JINTS_ERR) {
1543 unsigned char error = jpu_read(jpu, JCDERR) & JCDERR_MASK;
1544
1545 dev_dbg(jpu->dev, "processing error: %#X: %s\n", error,
1546 error_to_text[error]);
1547
1548 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
1549 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
1550 }
1551
1552 jpu->curr = NULL;
1553
1554 /* ...reset JPU after completion */
1555 jpu_write(jpu, JCCMD_SRST, JCCMD);
1556 spin_unlock(&jpu->lock);
1557
1558 v4l2_m2m_job_finish(jpu->m2m_dev, curr_ctx->fh.m2m_ctx);
1559
1560 return IRQ_HANDLED;
1561
1562 handled:
1563 spin_unlock(&jpu->lock);
1564 return IRQ_HANDLED;
1565 }
1566
1567 /*
1568 * ============================================================================
1569 * Driver basic infrastructure
1570 * ============================================================================
1571 */
1572 static const struct of_device_id jpu_dt_ids[] = {
1573 { .compatible = "renesas,jpu-r8a7790" }, /* H2 */
1574 { .compatible = "renesas,jpu-r8a7791" }, /* M2-W */
1575 { .compatible = "renesas,jpu-r8a7792" }, /* V2H */
1576 { .compatible = "renesas,jpu-r8a7793" }, /* M2-N */
1577 { .compatible = "renesas,rcar-gen2-jpu" },
1578 { },
1579 };
1580 MODULE_DEVICE_TABLE(of, jpu_dt_ids);
1581
jpu_probe(struct platform_device * pdev)1582 static int jpu_probe(struct platform_device *pdev)
1583 {
1584 struct jpu *jpu;
1585 int ret;
1586 unsigned int i;
1587
1588 jpu = devm_kzalloc(&pdev->dev, sizeof(*jpu), GFP_KERNEL);
1589 if (!jpu)
1590 return -ENOMEM;
1591
1592 mutex_init(&jpu->mutex);
1593 spin_lock_init(&jpu->lock);
1594 jpu->dev = &pdev->dev;
1595
1596 /* memory-mapped registers */
1597 jpu->regs = devm_platform_ioremap_resource(pdev, 0);
1598 if (IS_ERR(jpu->regs))
1599 return PTR_ERR(jpu->regs);
1600
1601 /* interrupt service routine registration */
1602 jpu->irq = ret = platform_get_irq(pdev, 0);
1603 if (ret < 0)
1604 return ret;
1605
1606 ret = devm_request_irq(&pdev->dev, jpu->irq, jpu_irq_handler, 0,
1607 dev_name(&pdev->dev), jpu);
1608 if (ret) {
1609 dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpu->irq);
1610 return ret;
1611 }
1612
1613 /* clocks */
1614 jpu->clk = devm_clk_get(&pdev->dev, NULL);
1615 if (IS_ERR(jpu->clk)) {
1616 dev_err(&pdev->dev, "cannot get clock\n");
1617 return PTR_ERR(jpu->clk);
1618 }
1619
1620 /* v4l2 device */
1621 ret = v4l2_device_register(&pdev->dev, &jpu->v4l2_dev);
1622 if (ret) {
1623 dev_err(&pdev->dev, "Failed to register v4l2 device\n");
1624 return ret;
1625 }
1626
1627 /* mem2mem device */
1628 jpu->m2m_dev = v4l2_m2m_init(&jpu_m2m_ops);
1629 if (IS_ERR(jpu->m2m_dev)) {
1630 v4l2_err(&jpu->v4l2_dev, "Failed to init mem2mem device\n");
1631 ret = PTR_ERR(jpu->m2m_dev);
1632 goto device_register_rollback;
1633 }
1634
1635 /* fill in quantization and Huffman tables for encoder */
1636 for (i = 0; i < JPU_MAX_QUALITY; i++)
1637 jpu_generate_hdr(i, (unsigned char *)jpeg_hdrs[i]);
1638
1639 strscpy(jpu->vfd_encoder.name, DRV_NAME, sizeof(jpu->vfd_encoder.name));
1640 jpu->vfd_encoder.fops = &jpu_fops;
1641 jpu->vfd_encoder.ioctl_ops = &jpu_ioctl_ops;
1642 jpu->vfd_encoder.minor = -1;
1643 jpu->vfd_encoder.release = video_device_release_empty;
1644 jpu->vfd_encoder.lock = &jpu->mutex;
1645 jpu->vfd_encoder.v4l2_dev = &jpu->v4l2_dev;
1646 jpu->vfd_encoder.vfl_dir = VFL_DIR_M2M;
1647 jpu->vfd_encoder.device_caps = V4L2_CAP_STREAMING |
1648 V4L2_CAP_VIDEO_M2M_MPLANE;
1649
1650 ret = video_register_device(&jpu->vfd_encoder, VFL_TYPE_VIDEO, -1);
1651 if (ret) {
1652 v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
1653 goto m2m_init_rollback;
1654 }
1655
1656 video_set_drvdata(&jpu->vfd_encoder, jpu);
1657
1658 strscpy(jpu->vfd_decoder.name, DRV_NAME, sizeof(jpu->vfd_decoder.name));
1659 jpu->vfd_decoder.fops = &jpu_fops;
1660 jpu->vfd_decoder.ioctl_ops = &jpu_ioctl_ops;
1661 jpu->vfd_decoder.minor = -1;
1662 jpu->vfd_decoder.release = video_device_release_empty;
1663 jpu->vfd_decoder.lock = &jpu->mutex;
1664 jpu->vfd_decoder.v4l2_dev = &jpu->v4l2_dev;
1665 jpu->vfd_decoder.vfl_dir = VFL_DIR_M2M;
1666 jpu->vfd_decoder.device_caps = V4L2_CAP_STREAMING |
1667 V4L2_CAP_VIDEO_M2M_MPLANE;
1668
1669 ret = video_register_device(&jpu->vfd_decoder, VFL_TYPE_VIDEO, -1);
1670 if (ret) {
1671 v4l2_err(&jpu->v4l2_dev, "Failed to register video device\n");
1672 goto enc_vdev_register_rollback;
1673 }
1674
1675 video_set_drvdata(&jpu->vfd_decoder, jpu);
1676 platform_set_drvdata(pdev, jpu);
1677
1678 v4l2_info(&jpu->v4l2_dev, "encoder device registered as /dev/video%d\n",
1679 jpu->vfd_encoder.num);
1680 v4l2_info(&jpu->v4l2_dev, "decoder device registered as /dev/video%d\n",
1681 jpu->vfd_decoder.num);
1682
1683 return 0;
1684
1685 enc_vdev_register_rollback:
1686 video_unregister_device(&jpu->vfd_encoder);
1687
1688 m2m_init_rollback:
1689 v4l2_m2m_release(jpu->m2m_dev);
1690
1691 device_register_rollback:
1692 v4l2_device_unregister(&jpu->v4l2_dev);
1693
1694 return ret;
1695 }
1696
jpu_remove(struct platform_device * pdev)1697 static void jpu_remove(struct platform_device *pdev)
1698 {
1699 struct jpu *jpu = platform_get_drvdata(pdev);
1700
1701 video_unregister_device(&jpu->vfd_decoder);
1702 video_unregister_device(&jpu->vfd_encoder);
1703 v4l2_m2m_release(jpu->m2m_dev);
1704 v4l2_device_unregister(&jpu->v4l2_dev);
1705 }
1706
1707 #ifdef CONFIG_PM_SLEEP
jpu_suspend(struct device * dev)1708 static int jpu_suspend(struct device *dev)
1709 {
1710 struct jpu *jpu = dev_get_drvdata(dev);
1711
1712 if (jpu->ref_count == 0)
1713 return 0;
1714
1715 clk_disable_unprepare(jpu->clk);
1716
1717 return 0;
1718 }
1719
jpu_resume(struct device * dev)1720 static int jpu_resume(struct device *dev)
1721 {
1722 struct jpu *jpu = dev_get_drvdata(dev);
1723
1724 if (jpu->ref_count == 0)
1725 return 0;
1726
1727 clk_prepare_enable(jpu->clk);
1728
1729 return 0;
1730 }
1731 #endif
1732
1733 static const struct dev_pm_ops jpu_pm_ops = {
1734 SET_SYSTEM_SLEEP_PM_OPS(jpu_suspend, jpu_resume)
1735 };
1736
1737 static struct platform_driver jpu_driver = {
1738 .probe = jpu_probe,
1739 .remove_new = jpu_remove,
1740 .driver = {
1741 .of_match_table = jpu_dt_ids,
1742 .name = DRV_NAME,
1743 .pm = &jpu_pm_ops,
1744 },
1745 };
1746
1747 module_platform_driver(jpu_driver);
1748
1749 MODULE_ALIAS("platform:" DRV_NAME);
1750 MODULE_AUTHOR("Mikhail Ulianov <mikhail.ulyanov@cogentembedded.com>");
1751 MODULE_DESCRIPTION("Renesas R-Car JPEG processing unit driver");
1752 MODULE_LICENSE("GPL v2");
1753