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Merge branches 'pm-cpufreq' and 'pm-cpuidle'
[deliverable/linux.git] / drivers / media / platform / soc_camera / rcar_vin.c
1 /*
2 * SoC-camera host driver for Renesas R-Car VIN unit
3 *
4 * Copyright (C) 2011-2013 Renesas Solutions Corp.
5 * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
6 *
7 * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c"
8 *
9 * Copyright (C) 2008 Magnus Damm
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17 #include <linux/delay.h>
18 #include <linux/interrupt.h>
19 #include <linux/io.h>
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/of.h>
23 #include <linux/of_device.h>
24 #include <linux/platform_data/camera-rcar.h>
25 #include <linux/platform_device.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/slab.h>
28 #include <linux/videodev2.h>
29
30 #include <media/soc_camera.h>
31 #include <media/soc_mediabus.h>
32 #include <media/v4l2-common.h>
33 #include <media/v4l2-dev.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-mediabus.h>
36 #include <media/v4l2-of.h>
37 #include <media/v4l2-subdev.h>
38 #include <media/videobuf2-dma-contig.h>
39
40 #include "soc_scale_crop.h"
41
42 #define DRV_NAME "rcar_vin"
43
44 /* Register offsets for R-Car VIN */
45 #define VNMC_REG 0x00 /* Video n Main Control Register */
46 #define VNMS_REG 0x04 /* Video n Module Status Register */
47 #define VNFC_REG 0x08 /* Video n Frame Capture Register */
48 #define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */
49 #define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */
50 #define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */
51 #define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */
52 #define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */
53 #define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */
54 #define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */
55 #define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */
56 #define VNIS_REG 0x2C /* Video n Image Stride Register */
57 #define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */
58 #define VNIE_REG 0x40 /* Video n Interrupt Enable Register */
59 #define VNINTS_REG 0x44 /* Video n Interrupt Status Register */
60 #define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */
61 #define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */
62 #define VNYS_REG 0x50 /* Video n Y Scale Register */
63 #define VNXS_REG 0x54 /* Video n X Scale Register */
64 #define VNDMR_REG 0x58 /* Video n Data Mode Register */
65 #define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */
66 #define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */
67 #define VNC1A_REG 0x80 /* Video n Coefficient Set C1A Register */
68 #define VNC1B_REG 0x84 /* Video n Coefficient Set C1B Register */
69 #define VNC1C_REG 0x88 /* Video n Coefficient Set C1C Register */
70 #define VNC2A_REG 0x90 /* Video n Coefficient Set C2A Register */
71 #define VNC2B_REG 0x94 /* Video n Coefficient Set C2B Register */
72 #define VNC2C_REG 0x98 /* Video n Coefficient Set C2C Register */
73 #define VNC3A_REG 0xA0 /* Video n Coefficient Set C3A Register */
74 #define VNC3B_REG 0xA4 /* Video n Coefficient Set C3B Register */
75 #define VNC3C_REG 0xA8 /* Video n Coefficient Set C3C Register */
76 #define VNC4A_REG 0xB0 /* Video n Coefficient Set C4A Register */
77 #define VNC4B_REG 0xB4 /* Video n Coefficient Set C4B Register */
78 #define VNC4C_REG 0xB8 /* Video n Coefficient Set C4C Register */
79 #define VNC5A_REG 0xC0 /* Video n Coefficient Set C5A Register */
80 #define VNC5B_REG 0xC4 /* Video n Coefficient Set C5B Register */
81 #define VNC5C_REG 0xC8 /* Video n Coefficient Set C5C Register */
82 #define VNC6A_REG 0xD0 /* Video n Coefficient Set C6A Register */
83 #define VNC6B_REG 0xD4 /* Video n Coefficient Set C6B Register */
84 #define VNC6C_REG 0xD8 /* Video n Coefficient Set C6C Register */
85 #define VNC7A_REG 0xE0 /* Video n Coefficient Set C7A Register */
86 #define VNC7B_REG 0xE4 /* Video n Coefficient Set C7B Register */
87 #define VNC7C_REG 0xE8 /* Video n Coefficient Set C7C Register */
88 #define VNC8A_REG 0xF0 /* Video n Coefficient Set C8A Register */
89 #define VNC8B_REG 0xF4 /* Video n Coefficient Set C8B Register */
90 #define VNC8C_REG 0xF8 /* Video n Coefficient Set C8C Register */
91
92 /* Register bit fields for R-Car VIN */
93 /* Video n Main Control Register bits */
94 #define VNMC_FOC (1 << 21)
95 #define VNMC_YCAL (1 << 19)
96 #define VNMC_INF_YUV8_BT656 (0 << 16)
97 #define VNMC_INF_YUV8_BT601 (1 << 16)
98 #define VNMC_INF_YUV10_BT656 (2 << 16)
99 #define VNMC_INF_YUV10_BT601 (3 << 16)
100 #define VNMC_INF_YUV16 (5 << 16)
101 #define VNMC_VUP (1 << 10)
102 #define VNMC_IM_ODD (0 << 3)
103 #define VNMC_IM_ODD_EVEN (1 << 3)
104 #define VNMC_IM_EVEN (2 << 3)
105 #define VNMC_IM_FULL (3 << 3)
106 #define VNMC_BPS (1 << 1)
107 #define VNMC_ME (1 << 0)
108
109 /* Video n Module Status Register bits */
110 #define VNMS_FBS_MASK (3 << 3)
111 #define VNMS_FBS_SHIFT 3
112 #define VNMS_AV (1 << 1)
113 #define VNMS_CA (1 << 0)
114
115 /* Video n Frame Capture Register bits */
116 #define VNFC_C_FRAME (1 << 1)
117 #define VNFC_S_FRAME (1 << 0)
118
119 /* Video n Interrupt Enable Register bits */
120 #define VNIE_FIE (1 << 4)
121 #define VNIE_EFE (1 << 1)
122
123 /* Video n Data Mode Register bits */
124 #define VNDMR_EXRGB (1 << 8)
125 #define VNDMR_BPSM (1 << 4)
126 #define VNDMR_DTMD_YCSEP (1 << 1)
127 #define VNDMR_DTMD_ARGB1555 (1 << 0)
128
129 /* Video n Data Mode Register 2 bits */
130 #define VNDMR2_VPS (1 << 30)
131 #define VNDMR2_HPS (1 << 29)
132 #define VNDMR2_FTEV (1 << 17)
133 #define VNDMR2_VLV(n) ((n & 0xf) << 12)
134
135 #define VIN_MAX_WIDTH 2048
136 #define VIN_MAX_HEIGHT 2048
137
138 enum chip_id {
139 RCAR_GEN2,
140 RCAR_H1,
141 RCAR_M1,
142 RCAR_E1,
143 };
144
145 struct vin_coeff {
146 unsigned short xs_value;
147 u32 coeff_set[24];
148 };
149
150 static const struct vin_coeff vin_coeff_set[] = {
151 { 0x0000, {
152 0x00000000, 0x00000000, 0x00000000,
153 0x00000000, 0x00000000, 0x00000000,
154 0x00000000, 0x00000000, 0x00000000,
155 0x00000000, 0x00000000, 0x00000000,
156 0x00000000, 0x00000000, 0x00000000,
157 0x00000000, 0x00000000, 0x00000000,
158 0x00000000, 0x00000000, 0x00000000,
159 0x00000000, 0x00000000, 0x00000000 },
160 },
161 { 0x1000, {
162 0x000fa400, 0x000fa400, 0x09625902,
163 0x000003f8, 0x00000403, 0x3de0d9f0,
164 0x001fffed, 0x00000804, 0x3cc1f9c3,
165 0x001003de, 0x00000c01, 0x3cb34d7f,
166 0x002003d2, 0x00000c00, 0x3d24a92d,
167 0x00200bca, 0x00000bff, 0x3df600d2,
168 0x002013cc, 0x000007ff, 0x3ed70c7e,
169 0x00100fde, 0x00000000, 0x3f87c036 },
170 },
171 { 0x1200, {
172 0x002ffff1, 0x002ffff1, 0x02a0a9c8,
173 0x002003e7, 0x001ffffa, 0x000185bc,
174 0x002007dc, 0x000003ff, 0x3e52859c,
175 0x00200bd4, 0x00000002, 0x3d53996b,
176 0x00100fd0, 0x00000403, 0x3d04ad2d,
177 0x00000bd5, 0x00000403, 0x3d35ace7,
178 0x3ff003e4, 0x00000801, 0x3dc674a1,
179 0x3fffe800, 0x00000800, 0x3e76f461 },
180 },
181 { 0x1400, {
182 0x00100be3, 0x00100be3, 0x04d1359a,
183 0x00000fdb, 0x002003ed, 0x0211fd93,
184 0x00000fd6, 0x002003f4, 0x0002d97b,
185 0x000007d6, 0x002ffffb, 0x3e93b956,
186 0x3ff003da, 0x001003ff, 0x3db49926,
187 0x3fffefe9, 0x00100001, 0x3d655cee,
188 0x3fffd400, 0x00000003, 0x3d65f4b6,
189 0x000fb421, 0x00000402, 0x3dc6547e },
190 },
191 { 0x1600, {
192 0x00000bdd, 0x00000bdd, 0x06519578,
193 0x3ff007da, 0x00000be3, 0x03c24973,
194 0x3ff003d9, 0x00000be9, 0x01b30d5f,
195 0x3ffff7df, 0x001003f1, 0x0003c542,
196 0x000fdfec, 0x001003f7, 0x3ec4711d,
197 0x000fc400, 0x002ffffd, 0x3df504f1,
198 0x001fa81a, 0x002ffc00, 0x3d957cc2,
199 0x002f8c3c, 0x00100000, 0x3db5c891 },
200 },
201 { 0x1800, {
202 0x3ff003dc, 0x3ff003dc, 0x0791e558,
203 0x000ff7dd, 0x3ff007de, 0x05328554,
204 0x000fe7e3, 0x3ff00be2, 0x03232546,
205 0x000fd7ee, 0x000007e9, 0x0143bd30,
206 0x001fb800, 0x000007ee, 0x00044511,
207 0x002fa015, 0x000007f4, 0x3ef4bcee,
208 0x002f8832, 0x001003f9, 0x3e4514c7,
209 0x001f7853, 0x001003fd, 0x3de54c9f },
210 },
211 { 0x1a00, {
212 0x000fefe0, 0x000fefe0, 0x08721d3c,
213 0x001fdbe7, 0x000ffbde, 0x0652a139,
214 0x001fcbf0, 0x000003df, 0x0463292e,
215 0x002fb3ff, 0x3ff007e3, 0x0293a91d,
216 0x002f9c12, 0x3ff00be7, 0x01241905,
217 0x001f8c29, 0x000007ed, 0x3fe470eb,
218 0x000f7c46, 0x000007f2, 0x3f04b8ca,
219 0x3fef7865, 0x000007f6, 0x3e74e4a8 },
220 },
221 { 0x1c00, {
222 0x001fd3e9, 0x001fd3e9, 0x08f23d26,
223 0x002fbff3, 0x001fe3e4, 0x0712ad23,
224 0x002fa800, 0x000ff3e0, 0x05631d1b,
225 0x001f9810, 0x000ffbe1, 0x03b3890d,
226 0x000f8c23, 0x000003e3, 0x0233e8fa,
227 0x3fef843b, 0x000003e7, 0x00f430e4,
228 0x3fbf8456, 0x3ff00bea, 0x00046cc8,
229 0x3f8f8c72, 0x3ff00bef, 0x3f3490ac },
230 },
231 { 0x1e00, {
232 0x001fbbf4, 0x001fbbf4, 0x09425112,
233 0x001fa800, 0x002fc7ed, 0x0792b110,
234 0x000f980e, 0x001fdbe6, 0x0613110a,
235 0x3fff8c20, 0x001fe7e3, 0x04a368fd,
236 0x3fcf8c33, 0x000ff7e2, 0x0343b8ed,
237 0x3f9f8c4a, 0x000fffe3, 0x0203f8da,
238 0x3f5f9c61, 0x000003e6, 0x00e428c5,
239 0x3f1fb07b, 0x000003eb, 0x3fe440af },
240 },
241 { 0x2000, {
242 0x000fa400, 0x000fa400, 0x09625902,
243 0x3fff980c, 0x001fb7f5, 0x0812b0ff,
244 0x3fdf901c, 0x001fc7ed, 0x06b2fcfa,
245 0x3faf902d, 0x001fd3e8, 0x055348f1,
246 0x3f7f983f, 0x001fe3e5, 0x04038ce3,
247 0x3f3fa454, 0x001fefe3, 0x02e3c8d1,
248 0x3f0fb86a, 0x001ff7e4, 0x01c3e8c0,
249 0x3ecfd880, 0x000fffe6, 0x00c404ac },
250 },
251 { 0x2200, {
252 0x3fdf9c0b, 0x3fdf9c0b, 0x09725cf4,
253 0x3fbf9818, 0x3fffa400, 0x0842a8f1,
254 0x3f8f9827, 0x000fb3f7, 0x0702f0ec,
255 0x3f5fa037, 0x000fc3ef, 0x05d330e4,
256 0x3f2fac49, 0x001fcfea, 0x04a364d9,
257 0x3effc05c, 0x001fdbe7, 0x038394ca,
258 0x3ecfdc6f, 0x001fe7e6, 0x0273b0bb,
259 0x3ea00083, 0x001fefe6, 0x0183c0a9 },
260 },
261 { 0x2400, {
262 0x3f9fa014, 0x3f9fa014, 0x098260e6,
263 0x3f7f9c23, 0x3fcf9c0a, 0x08629ce5,
264 0x3f4fa431, 0x3fefa400, 0x0742d8e1,
265 0x3f1fb440, 0x3fffb3f8, 0x062310d9,
266 0x3eefc850, 0x000fbbf2, 0x050340d0,
267 0x3ecfe062, 0x000fcbec, 0x041364c2,
268 0x3ea00073, 0x001fd3ea, 0x03037cb5,
269 0x3e902086, 0x001fdfe8, 0x022388a5 },
270 },
271 { 0x2600, {
272 0x3f5fa81e, 0x3f5fa81e, 0x096258da,
273 0x3f3fac2b, 0x3f8fa412, 0x088290d8,
274 0x3f0fbc38, 0x3fafa408, 0x0772c8d5,
275 0x3eefcc47, 0x3fcfa800, 0x0672f4ce,
276 0x3ecfe456, 0x3fefaffa, 0x05531cc6,
277 0x3eb00066, 0x3fffbbf3, 0x047334bb,
278 0x3ea01c77, 0x000fc7ee, 0x039348ae,
279 0x3ea04486, 0x000fd3eb, 0x02b350a1 },
280 },
281 { 0x2800, {
282 0x3f2fb426, 0x3f2fb426, 0x094250ce,
283 0x3f0fc032, 0x3f4fac1b, 0x086284cd,
284 0x3eefd040, 0x3f7fa811, 0x0782acc9,
285 0x3ecfe84c, 0x3f9fa807, 0x06a2d8c4,
286 0x3eb0005b, 0x3fbfac00, 0x05b2f4bc,
287 0x3eb0186a, 0x3fdfb3fa, 0x04c308b4,
288 0x3eb04077, 0x3fefbbf4, 0x03f31ca8,
289 0x3ec06884, 0x000fbff2, 0x03031c9e },
290 },
291 { 0x2a00, {
292 0x3f0fc42d, 0x3f0fc42d, 0x090240c4,
293 0x3eefd439, 0x3f2fb822, 0x08526cc2,
294 0x3edfe845, 0x3f4fb018, 0x078294bf,
295 0x3ec00051, 0x3f6fac0f, 0x06b2b4bb,
296 0x3ec0185f, 0x3f8fac07, 0x05e2ccb4,
297 0x3ec0386b, 0x3fafac00, 0x0502e8ac,
298 0x3ed05c77, 0x3fcfb3fb, 0x0432f0a3,
299 0x3ef08482, 0x3fdfbbf6, 0x0372f898 },
300 },
301 { 0x2c00, {
302 0x3eefdc31, 0x3eefdc31, 0x08e238b8,
303 0x3edfec3d, 0x3f0fc828, 0x082258b9,
304 0x3ed00049, 0x3f1fc01e, 0x077278b6,
305 0x3ed01455, 0x3f3fb815, 0x06c294b2,
306 0x3ed03460, 0x3f5fb40d, 0x0602acac,
307 0x3ef0506c, 0x3f7fb006, 0x0542c0a4,
308 0x3f107476, 0x3f9fb400, 0x0472c89d,
309 0x3f309c80, 0x3fbfb7fc, 0x03b2cc94 },
310 },
311 { 0x2e00, {
312 0x3eefec37, 0x3eefec37, 0x088220b0,
313 0x3ee00041, 0x3effdc2d, 0x07f244ae,
314 0x3ee0144c, 0x3f0fd023, 0x07625cad,
315 0x3ef02c57, 0x3f1fc81a, 0x06c274a9,
316 0x3f004861, 0x3f3fbc13, 0x060288a6,
317 0x3f20686b, 0x3f5fb80c, 0x05529c9e,
318 0x3f408c74, 0x3f6fb805, 0x04b2ac96,
319 0x3f80ac7e, 0x3f8fb800, 0x0402ac8e },
320 },
321 { 0x3000, {
322 0x3ef0003a, 0x3ef0003a, 0x084210a6,
323 0x3ef01045, 0x3effec32, 0x07b228a7,
324 0x3f00284e, 0x3f0fdc29, 0x073244a4,
325 0x3f104058, 0x3f0fd420, 0x06a258a2,
326 0x3f305c62, 0x3f2fc818, 0x0612689d,
327 0x3f508069, 0x3f3fc011, 0x05728496,
328 0x3f80a072, 0x3f4fc00a, 0x04d28c90,
329 0x3fc0c07b, 0x3f6fbc04, 0x04429088 },
330 },
331 { 0x3200, {
332 0x3f00103e, 0x3f00103e, 0x07f1fc9e,
333 0x3f102447, 0x3f000035, 0x0782149d,
334 0x3f203c4f, 0x3f0ff02c, 0x07122c9c,
335 0x3f405458, 0x3f0fe424, 0x06924099,
336 0x3f607061, 0x3f1fd41d, 0x06024c97,
337 0x3f909068, 0x3f2fcc16, 0x05726490,
338 0x3fc0b070, 0x3f3fc80f, 0x04f26c8a,
339 0x0000d077, 0x3f4fc409, 0x04627484 },
340 },
341 { 0x3400, {
342 0x3f202040, 0x3f202040, 0x07a1e898,
343 0x3f303449, 0x3f100c38, 0x0741fc98,
344 0x3f504c50, 0x3f10002f, 0x06e21495,
345 0x3f706459, 0x3f1ff028, 0x06722492,
346 0x3fa08060, 0x3f1fe421, 0x05f2348f,
347 0x3fd09c67, 0x3f1fdc19, 0x05824c89,
348 0x0000bc6e, 0x3f2fd014, 0x04f25086,
349 0x0040dc74, 0x3f3fcc0d, 0x04825c7f },
350 },
351 { 0x3600, {
352 0x3f403042, 0x3f403042, 0x0761d890,
353 0x3f504848, 0x3f301c3b, 0x0701f090,
354 0x3f805c50, 0x3f200c33, 0x06a2008f,
355 0x3fa07458, 0x3f10002b, 0x06520c8d,
356 0x3fd0905e, 0x3f1ff424, 0x05e22089,
357 0x0000ac65, 0x3f1fe81d, 0x05823483,
358 0x0030cc6a, 0x3f2fdc18, 0x04f23c81,
359 0x0080e871, 0x3f2fd412, 0x0482407c },
360 },
361 { 0x3800, {
362 0x3f604043, 0x3f604043, 0x0721c88a,
363 0x3f80544a, 0x3f502c3c, 0x06d1d88a,
364 0x3fb06851, 0x3f301c35, 0x0681e889,
365 0x3fd08456, 0x3f30082f, 0x0611fc88,
366 0x00009c5d, 0x3f200027, 0x05d20884,
367 0x0030b863, 0x3f2ff421, 0x05621880,
368 0x0070d468, 0x3f2fe81b, 0x0502247c,
369 0x00c0ec6f, 0x3f2fe015, 0x04a22877 },
370 },
371 { 0x3a00, {
372 0x3f904c44, 0x3f904c44, 0x06e1b884,
373 0x3fb0604a, 0x3f70383e, 0x0691c885,
374 0x3fe07451, 0x3f502c36, 0x0661d483,
375 0x00009055, 0x3f401831, 0x0601ec81,
376 0x0030a85b, 0x3f300c2a, 0x05b1f480,
377 0x0070c061, 0x3f300024, 0x0562047a,
378 0x00b0d867, 0x3f3ff41e, 0x05020c77,
379 0x00f0f46b, 0x3f2fec19, 0x04a21474 },
380 },
381 { 0x3c00, {
382 0x3fb05c43, 0x3fb05c43, 0x06c1b07e,
383 0x3fe06c4b, 0x3f902c3f, 0x0681c081,
384 0x0000844f, 0x3f703838, 0x0631cc7d,
385 0x00309855, 0x3f602433, 0x05d1d47e,
386 0x0060b459, 0x3f50142e, 0x0581e47b,
387 0x00a0c85f, 0x3f400828, 0x0531f078,
388 0x00e0e064, 0x3f300021, 0x0501fc73,
389 0x00b0fc6a, 0x3f3ff41d, 0x04a20873 },
390 },
391 { 0x3e00, {
392 0x3fe06444, 0x3fe06444, 0x0681a07a,
393 0x00007849, 0x3fc0503f, 0x0641b07a,
394 0x0020904d, 0x3fa0403a, 0x05f1c07a,
395 0x0060a453, 0x3f803034, 0x05c1c878,
396 0x0090b858, 0x3f70202f, 0x0571d477,
397 0x00d0d05d, 0x3f501829, 0x0531e073,
398 0x0110e462, 0x3f500825, 0x04e1e471,
399 0x01510065, 0x3f40001f, 0x04a1f06d },
400 },
401 { 0x4000, {
402 0x00007044, 0x00007044, 0x06519476,
403 0x00208448, 0x3fe05c3f, 0x0621a476,
404 0x0050984d, 0x3fc04c3a, 0x05e1b075,
405 0x0080ac52, 0x3fa03c35, 0x05a1b875,
406 0x00c0c056, 0x3f803030, 0x0561c473,
407 0x0100d45b, 0x3f70202b, 0x0521d46f,
408 0x0140e860, 0x3f601427, 0x04d1d46e,
409 0x01810064, 0x3f500822, 0x0491dc6b },
410 },
411 { 0x5000, {
412 0x0110a442, 0x0110a442, 0x0551545e,
413 0x0140b045, 0x00e0983f, 0x0531585f,
414 0x0160c047, 0x00c08c3c, 0x0511645e,
415 0x0190cc4a, 0x00908039, 0x04f1685f,
416 0x01c0dc4c, 0x00707436, 0x04d1705e,
417 0x0200e850, 0x00506833, 0x04b1785b,
418 0x0230f453, 0x00305c30, 0x0491805a,
419 0x02710056, 0x0010542d, 0x04718059 },
420 },
421 { 0x6000, {
422 0x01c0bc40, 0x01c0bc40, 0x04c13052,
423 0x01e0c841, 0x01a0b43d, 0x04c13851,
424 0x0210cc44, 0x0180a83c, 0x04a13453,
425 0x0230d845, 0x0160a03a, 0x04913c52,
426 0x0260e047, 0x01409838, 0x04714052,
427 0x0280ec49, 0x01208c37, 0x04514c50,
428 0x02b0f44b, 0x01008435, 0x04414c50,
429 0x02d1004c, 0x00e07c33, 0x0431544f },
430 },
431 { 0x7000, {
432 0x0230c83e, 0x0230c83e, 0x04711c4c,
433 0x0250d03f, 0x0210c43c, 0x0471204b,
434 0x0270d840, 0x0200b83c, 0x0451244b,
435 0x0290dc42, 0x01e0b43a, 0x0441244c,
436 0x02b0e443, 0x01c0b038, 0x0441284b,
437 0x02d0ec44, 0x01b0a438, 0x0421304a,
438 0x02f0f445, 0x0190a036, 0x04213449,
439 0x0310f847, 0x01709c34, 0x04213848 },
440 },
441 { 0x8000, {
442 0x0280d03d, 0x0280d03d, 0x04310c48,
443 0x02a0d43e, 0x0270c83c, 0x04311047,
444 0x02b0dc3e, 0x0250c83a, 0x04311447,
445 0x02d0e040, 0x0240c03a, 0x04211446,
446 0x02e0e840, 0x0220bc39, 0x04111847,
447 0x0300e842, 0x0210b438, 0x04012445,
448 0x0310f043, 0x0200b037, 0x04012045,
449 0x0330f444, 0x01e0ac36, 0x03f12445 },
450 },
451 { 0xefff, {
452 0x0340dc3a, 0x0340dc3a, 0x03b0ec40,
453 0x0340e03a, 0x0330e039, 0x03c0f03e,
454 0x0350e03b, 0x0330dc39, 0x03c0ec3e,
455 0x0350e43a, 0x0320dc38, 0x03c0f43e,
456 0x0360e43b, 0x0320d839, 0x03b0f03e,
457 0x0360e83b, 0x0310d838, 0x03c0fc3b,
458 0x0370e83b, 0x0310d439, 0x03a0f83d,
459 0x0370e83c, 0x0300d438, 0x03b0fc3c },
460 }
461 };
462
463 enum rcar_vin_state {
464 STOPPED = 0,
465 RUNNING,
466 STOPPING,
467 };
468
469 struct rcar_vin_priv {
470 void __iomem *base;
471 spinlock_t lock;
472 int sequence;
473 /* State of the VIN module in capturing mode */
474 enum rcar_vin_state state;
475 struct soc_camera_host ici;
476 struct list_head capture;
477 #define MAX_BUFFER_NUM 3
478 struct vb2_buffer *queue_buf[MAX_BUFFER_NUM];
479 struct vb2_alloc_ctx *alloc_ctx;
480 enum v4l2_field field;
481 unsigned int pdata_flags;
482 unsigned int vb_count;
483 unsigned int nr_hw_slots;
484 bool request_to_stop;
485 struct completion capture_stop;
486 enum chip_id chip;
487 };
488
489 #define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM)
490
491 struct rcar_vin_buffer {
492 struct vb2_buffer vb;
493 struct list_head list;
494 };
495
496 #define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
497 struct rcar_vin_buffer, \
498 vb)->list)
499
500 struct rcar_vin_cam {
501 /* VIN offsets within the camera output, before the VIN scaler */
502 unsigned int vin_left;
503 unsigned int vin_top;
504 /* Client output, as seen by the VIN */
505 unsigned int width;
506 unsigned int height;
507 /* User window from S_FMT */
508 unsigned int out_width;
509 unsigned int out_height;
510 /*
511 * User window from S_CROP / G_CROP, produced by client cropping and
512 * scaling, VIN scaling and VIN cropping, mapped back onto the client
513 * input window
514 */
515 struct v4l2_rect subrect;
516 /* Camera cropping rectangle */
517 struct v4l2_rect rect;
518 const struct soc_mbus_pixelfmt *extra_fmt;
519 };
520
521 /*
522 * .queue_setup() is called to check whether the driver can accept the requested
523 * number of buffers and to fill in plane sizes for the current frame format if
524 * required
525 */
526 static int rcar_vin_videobuf_setup(struct vb2_queue *vq,
527 const struct v4l2_format *fmt,
528 unsigned int *count,
529 unsigned int *num_planes,
530 unsigned int sizes[], void *alloc_ctxs[])
531 {
532 struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
533 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
534 struct rcar_vin_priv *priv = ici->priv;
535
536 if (fmt) {
537 const struct soc_camera_format_xlate *xlate;
538 unsigned int bytes_per_line;
539 int ret;
540
541 xlate = soc_camera_xlate_by_fourcc(icd,
542 fmt->fmt.pix.pixelformat);
543 if (!xlate)
544 return -EINVAL;
545 ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
546 xlate->host_fmt);
547 if (ret < 0)
548 return ret;
549
550 bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret);
551
552 ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line,
553 fmt->fmt.pix.height);
554 if (ret < 0)
555 return ret;
556
557 sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret);
558 } else {
559 /* Called from VIDIOC_REQBUFS or in compatibility mode */
560 sizes[0] = icd->sizeimage;
561 }
562
563 alloc_ctxs[0] = priv->alloc_ctx;
564
565 if (!vq->num_buffers)
566 priv->sequence = 0;
567
568 if (!*count)
569 *count = 2;
570 priv->vb_count = *count;
571
572 *num_planes = 1;
573
574 /* Number of hardware slots */
575 if (is_continuous_transfer(priv))
576 priv->nr_hw_slots = MAX_BUFFER_NUM;
577 else
578 priv->nr_hw_slots = 1;
579
580 dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]);
581
582 return 0;
583 }
584
585 static int rcar_vin_setup(struct rcar_vin_priv *priv)
586 {
587 struct soc_camera_device *icd = priv->ici.icd;
588 struct rcar_vin_cam *cam = icd->host_priv;
589 u32 vnmc, dmr, interrupts;
590 bool progressive = false, output_is_yuv = false;
591
592 switch (priv->field) {
593 case V4L2_FIELD_TOP:
594 vnmc = VNMC_IM_ODD;
595 break;
596 case V4L2_FIELD_BOTTOM:
597 vnmc = VNMC_IM_EVEN;
598 break;
599 case V4L2_FIELD_INTERLACED:
600 case V4L2_FIELD_INTERLACED_TB:
601 vnmc = VNMC_IM_FULL;
602 break;
603 case V4L2_FIELD_INTERLACED_BT:
604 vnmc = VNMC_IM_FULL | VNMC_FOC;
605 break;
606 case V4L2_FIELD_NONE:
607 if (is_continuous_transfer(priv)) {
608 vnmc = VNMC_IM_ODD_EVEN;
609 progressive = true;
610 } else {
611 vnmc = VNMC_IM_ODD;
612 }
613 break;
614 default:
615 vnmc = VNMC_IM_ODD;
616 break;
617 }
618
619 /* input interface */
620 switch (icd->current_fmt->code) {
621 case MEDIA_BUS_FMT_YUYV8_1X16:
622 /* BT.601/BT.1358 16bit YCbCr422 */
623 vnmc |= VNMC_INF_YUV16;
624 break;
625 case MEDIA_BUS_FMT_YUYV8_2X8:
626 /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
627 vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
628 VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
629 break;
630 case MEDIA_BUS_FMT_YUYV10_2X10:
631 /* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */
632 vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
633 VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
634 break;
635 default:
636 break;
637 }
638
639 /* output format */
640 switch (icd->current_fmt->host_fmt->fourcc) {
641 case V4L2_PIX_FMT_NV16:
642 iowrite32(ALIGN(cam->width * cam->height, 0x80),
643 priv->base + VNUVAOF_REG);
644 dmr = VNDMR_DTMD_YCSEP;
645 output_is_yuv = true;
646 break;
647 case V4L2_PIX_FMT_YUYV:
648 dmr = VNDMR_BPSM;
649 output_is_yuv = true;
650 break;
651 case V4L2_PIX_FMT_UYVY:
652 dmr = 0;
653 output_is_yuv = true;
654 break;
655 case V4L2_PIX_FMT_RGB555X:
656 dmr = VNDMR_DTMD_ARGB1555;
657 break;
658 case V4L2_PIX_FMT_RGB565:
659 dmr = 0;
660 break;
661 case V4L2_PIX_FMT_RGB32:
662 if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 ||
663 priv->chip == RCAR_E1) {
664 dmr = VNDMR_EXRGB;
665 break;
666 }
667 default:
668 dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n",
669 icd->current_fmt->host_fmt->fourcc);
670 return -EINVAL;
671 }
672
673 /* Always update on field change */
674 vnmc |= VNMC_VUP;
675
676 /* If input and output use the same colorspace, use bypass mode */
677 if (output_is_yuv)
678 vnmc |= VNMC_BPS;
679
680 /* progressive or interlaced mode */
681 interrupts = progressive ? VNIE_FIE : VNIE_EFE;
682
683 /* ack interrupts */
684 iowrite32(interrupts, priv->base + VNINTS_REG);
685 /* enable interrupts */
686 iowrite32(interrupts, priv->base + VNIE_REG);
687 /* start capturing */
688 iowrite32(dmr, priv->base + VNDMR_REG);
689 iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG);
690
691 return 0;
692 }
693
694 static void rcar_vin_capture(struct rcar_vin_priv *priv)
695 {
696 if (is_continuous_transfer(priv))
697 /* Continuous Frame Capture Mode */
698 iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG);
699 else
700 /* Single Frame Capture Mode */
701 iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG);
702 }
703
704 static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv)
705 {
706 priv->state = STOPPING;
707
708 /* set continuous & single transfer off */
709 iowrite32(0, priv->base + VNFC_REG);
710 /* disable capture (release DMA buffer), reset */
711 iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
712 priv->base + VNMC_REG);
713
714 /* update the status if stopped already */
715 if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA))
716 priv->state = STOPPED;
717 }
718
719 static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv)
720 {
721 int slot;
722
723 for (slot = 0; slot < priv->nr_hw_slots; slot++)
724 if (priv->queue_buf[slot] == NULL)
725 return slot;
726
727 return -1;
728 }
729
730 static int rcar_vin_hw_ready(struct rcar_vin_priv *priv)
731 {
732 /* Ensure all HW slots are filled */
733 return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0;
734 }
735
736 /* Moves a buffer from the queue to the HW slots */
737 static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv)
738 {
739 struct vb2_buffer *vb;
740 dma_addr_t phys_addr_top;
741 int slot;
742
743 if (list_empty(&priv->capture))
744 return 0;
745
746 /* Find a free HW slot */
747 slot = rcar_vin_get_free_hw_slot(priv);
748 if (slot < 0)
749 return 0;
750
751 vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb;
752 list_del_init(to_buf_list(vb));
753 priv->queue_buf[slot] = vb;
754 phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0);
755 iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
756
757 return 1;
758 }
759
760 static void rcar_vin_videobuf_queue(struct vb2_buffer *vb)
761 {
762 struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
763 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
764 struct rcar_vin_priv *priv = ici->priv;
765 unsigned long size;
766
767 size = icd->sizeimage;
768
769 if (vb2_plane_size(vb, 0) < size) {
770 dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n",
771 vb->v4l2_buf.index, vb2_plane_size(vb, 0), size);
772 goto error;
773 }
774
775 vb2_set_plane_payload(vb, 0, size);
776
777 dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
778 vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
779
780 spin_lock_irq(&priv->lock);
781
782 list_add_tail(to_buf_list(vb), &priv->capture);
783 rcar_vin_fill_hw_slot(priv);
784
785 /* If we weren't running, and have enough buffers, start capturing! */
786 if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) {
787 if (rcar_vin_setup(priv)) {
788 /* Submit error */
789 list_del_init(to_buf_list(vb));
790 spin_unlock_irq(&priv->lock);
791 goto error;
792 }
793 priv->request_to_stop = false;
794 init_completion(&priv->capture_stop);
795 priv->state = RUNNING;
796 rcar_vin_capture(priv);
797 }
798
799 spin_unlock_irq(&priv->lock);
800
801 return;
802
803 error:
804 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
805 }
806
807 static void rcar_vin_videobuf_release(struct vb2_buffer *vb)
808 {
809 struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
810 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
811 struct rcar_vin_priv *priv = ici->priv;
812 unsigned int i;
813 int buf_in_use = 0;
814
815 spin_lock_irq(&priv->lock);
816
817 /* Is the buffer in use by the VIN hardware? */
818 for (i = 0; i < MAX_BUFFER_NUM; i++) {
819 if (priv->queue_buf[i] == vb) {
820 buf_in_use = 1;
821 break;
822 }
823 }
824
825 if (buf_in_use) {
826 while (priv->state != STOPPED) {
827
828 /* issue stop if running */
829 if (priv->state == RUNNING)
830 rcar_vin_request_capture_stop(priv);
831
832 /* wait until capturing has been stopped */
833 if (priv->state == STOPPING) {
834 priv->request_to_stop = true;
835 spin_unlock_irq(&priv->lock);
836 wait_for_completion(&priv->capture_stop);
837 spin_lock_irq(&priv->lock);
838 }
839 }
840 /*
841 * Capturing has now stopped. The buffer we have been asked
842 * to release could be any of the current buffers in use, so
843 * release all buffers that are in use by HW
844 */
845 for (i = 0; i < MAX_BUFFER_NUM; i++) {
846 if (priv->queue_buf[i]) {
847 vb2_buffer_done(priv->queue_buf[i],
848 VB2_BUF_STATE_ERROR);
849 priv->queue_buf[i] = NULL;
850 }
851 }
852 } else {
853 list_del_init(to_buf_list(vb));
854 }
855
856 spin_unlock_irq(&priv->lock);
857 }
858
859 static int rcar_vin_videobuf_init(struct vb2_buffer *vb)
860 {
861 INIT_LIST_HEAD(to_buf_list(vb));
862 return 0;
863 }
864
865 static void rcar_vin_stop_streaming(struct vb2_queue *vq)
866 {
867 struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
868 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
869 struct rcar_vin_priv *priv = ici->priv;
870 struct list_head *buf_head, *tmp;
871
872 spin_lock_irq(&priv->lock);
873 list_for_each_safe(buf_head, tmp, &priv->capture)
874 list_del_init(buf_head);
875 spin_unlock_irq(&priv->lock);
876 }
877
878 static struct vb2_ops rcar_vin_vb2_ops = {
879 .queue_setup = rcar_vin_videobuf_setup,
880 .buf_init = rcar_vin_videobuf_init,
881 .buf_cleanup = rcar_vin_videobuf_release,
882 .buf_queue = rcar_vin_videobuf_queue,
883 .stop_streaming = rcar_vin_stop_streaming,
884 .wait_prepare = soc_camera_unlock,
885 .wait_finish = soc_camera_lock,
886 };
887
888 static irqreturn_t rcar_vin_irq(int irq, void *data)
889 {
890 struct rcar_vin_priv *priv = data;
891 u32 int_status;
892 bool can_run = false, hw_stopped;
893 int slot;
894 unsigned int handled = 0;
895
896 spin_lock(&priv->lock);
897
898 int_status = ioread32(priv->base + VNINTS_REG);
899 if (!int_status)
900 goto done;
901 /* ack interrupts */
902 iowrite32(int_status, priv->base + VNINTS_REG);
903 handled = 1;
904
905 /* nothing to do if capture status is 'STOPPED' */
906 if (priv->state == STOPPED)
907 goto done;
908
909 hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA);
910
911 if (!priv->request_to_stop) {
912 if (is_continuous_transfer(priv))
913 slot = (ioread32(priv->base + VNMS_REG) &
914 VNMS_FBS_MASK) >> VNMS_FBS_SHIFT;
915 else
916 slot = 0;
917
918 priv->queue_buf[slot]->v4l2_buf.field = priv->field;
919 priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++;
920 do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp);
921 vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE);
922 priv->queue_buf[slot] = NULL;
923
924 if (priv->state != STOPPING)
925 can_run = rcar_vin_fill_hw_slot(priv);
926
927 if (hw_stopped || !can_run) {
928 priv->state = STOPPED;
929 } else if (is_continuous_transfer(priv) &&
930 list_empty(&priv->capture) &&
931 priv->state == RUNNING) {
932 /*
933 * The continuous capturing requires an explicit stop
934 * operation when there is no buffer to be set into
935 * the VnMBm registers.
936 */
937 rcar_vin_request_capture_stop(priv);
938 } else {
939 rcar_vin_capture(priv);
940 }
941
942 } else if (hw_stopped) {
943 priv->state = STOPPED;
944 priv->request_to_stop = false;
945 complete(&priv->capture_stop);
946 }
947
948 done:
949 spin_unlock(&priv->lock);
950
951 return IRQ_RETVAL(handled);
952 }
953
954 static int rcar_vin_add_device(struct soc_camera_device *icd)
955 {
956 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
957 struct rcar_vin_priv *priv = ici->priv;
958 int i;
959
960 for (i = 0; i < MAX_BUFFER_NUM; i++)
961 priv->queue_buf[i] = NULL;
962
963 pm_runtime_get_sync(ici->v4l2_dev.dev);
964
965 dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n",
966 icd->devnum);
967
968 return 0;
969 }
970
971 static void rcar_vin_remove_device(struct soc_camera_device *icd)
972 {
973 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
974 struct rcar_vin_priv *priv = ici->priv;
975 struct vb2_buffer *vb;
976 int i;
977
978 /* disable capture, disable interrupts */
979 iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
980 priv->base + VNMC_REG);
981 iowrite32(0, priv->base + VNIE_REG);
982
983 priv->state = STOPPED;
984 priv->request_to_stop = false;
985
986 /* make sure active buffer is cancelled */
987 spin_lock_irq(&priv->lock);
988 for (i = 0; i < MAX_BUFFER_NUM; i++) {
989 vb = priv->queue_buf[i];
990 if (vb) {
991 list_del_init(to_buf_list(vb));
992 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
993 }
994 }
995 spin_unlock_irq(&priv->lock);
996
997 pm_runtime_put(ici->v4l2_dev.dev);
998
999 dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n",
1000 icd->devnum);
1001 }
1002
1003 /* Called with .host_lock held */
1004 static int rcar_vin_clock_start(struct soc_camera_host *ici)
1005 {
1006 /* VIN does not have "mclk" */
1007 return 0;
1008 }
1009
1010 /* Called with .host_lock held */
1011 static void rcar_vin_clock_stop(struct soc_camera_host *ici)
1012 {
1013 /* VIN does not have "mclk" */
1014 }
1015
1016 static void set_coeff(struct rcar_vin_priv *priv, unsigned short xs)
1017 {
1018 int i;
1019 const struct vin_coeff *p_prev_set = NULL;
1020 const struct vin_coeff *p_set = NULL;
1021
1022 /* Look for suitable coefficient values */
1023 for (i = 0; i < ARRAY_SIZE(vin_coeff_set); i++) {
1024 p_prev_set = p_set;
1025 p_set = &vin_coeff_set[i];
1026
1027 if (xs < p_set->xs_value)
1028 break;
1029 }
1030
1031 /* Use previous value if its XS value is closer */
1032 if (p_prev_set && p_set &&
1033 xs - p_prev_set->xs_value < p_set->xs_value - xs)
1034 p_set = p_prev_set;
1035
1036 /* Set coefficient registers */
1037 iowrite32(p_set->coeff_set[0], priv->base + VNC1A_REG);
1038 iowrite32(p_set->coeff_set[1], priv->base + VNC1B_REG);
1039 iowrite32(p_set->coeff_set[2], priv->base + VNC1C_REG);
1040
1041 iowrite32(p_set->coeff_set[3], priv->base + VNC2A_REG);
1042 iowrite32(p_set->coeff_set[4], priv->base + VNC2B_REG);
1043 iowrite32(p_set->coeff_set[5], priv->base + VNC2C_REG);
1044
1045 iowrite32(p_set->coeff_set[6], priv->base + VNC3A_REG);
1046 iowrite32(p_set->coeff_set[7], priv->base + VNC3B_REG);
1047 iowrite32(p_set->coeff_set[8], priv->base + VNC3C_REG);
1048
1049 iowrite32(p_set->coeff_set[9], priv->base + VNC4A_REG);
1050 iowrite32(p_set->coeff_set[10], priv->base + VNC4B_REG);
1051 iowrite32(p_set->coeff_set[11], priv->base + VNC4C_REG);
1052
1053 iowrite32(p_set->coeff_set[12], priv->base + VNC5A_REG);
1054 iowrite32(p_set->coeff_set[13], priv->base + VNC5B_REG);
1055 iowrite32(p_set->coeff_set[14], priv->base + VNC5C_REG);
1056
1057 iowrite32(p_set->coeff_set[15], priv->base + VNC6A_REG);
1058 iowrite32(p_set->coeff_set[16], priv->base + VNC6B_REG);
1059 iowrite32(p_set->coeff_set[17], priv->base + VNC6C_REG);
1060
1061 iowrite32(p_set->coeff_set[18], priv->base + VNC7A_REG);
1062 iowrite32(p_set->coeff_set[19], priv->base + VNC7B_REG);
1063 iowrite32(p_set->coeff_set[20], priv->base + VNC7C_REG);
1064
1065 iowrite32(p_set->coeff_set[21], priv->base + VNC8A_REG);
1066 iowrite32(p_set->coeff_set[22], priv->base + VNC8B_REG);
1067 iowrite32(p_set->coeff_set[23], priv->base + VNC8C_REG);
1068 }
1069
1070 /* rect is guaranteed to not exceed the scaled camera rectangle */
1071 static int rcar_vin_set_rect(struct soc_camera_device *icd)
1072 {
1073 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1074 struct rcar_vin_cam *cam = icd->host_priv;
1075 struct rcar_vin_priv *priv = ici->priv;
1076 unsigned int left_offset, top_offset;
1077 unsigned char dsize = 0;
1078 struct v4l2_rect *cam_subrect = &cam->subrect;
1079 u32 value;
1080
1081 dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n",
1082 icd->user_width, icd->user_height, cam->vin_left, cam->vin_top);
1083
1084 left_offset = cam->vin_left;
1085 top_offset = cam->vin_top;
1086
1087 if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 &&
1088 priv->chip == RCAR_E1)
1089 dsize = 1;
1090
1091 dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n",
1092 cam->width, cam->height, cam->vin_left, cam->vin_top);
1093 dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n",
1094 cam_subrect->width, cam_subrect->height,
1095 cam_subrect->left, cam_subrect->top);
1096
1097 /* Set Start/End Pixel/Line Pre-Clip */
1098 iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG);
1099 iowrite32((left_offset + cam_subrect->width - 1) << dsize,
1100 priv->base + VNEPPRC_REG);
1101 switch (priv->field) {
1102 case V4L2_FIELD_INTERLACED:
1103 case V4L2_FIELD_INTERLACED_TB:
1104 case V4L2_FIELD_INTERLACED_BT:
1105 iowrite32(top_offset / 2, priv->base + VNSLPRC_REG);
1106 iowrite32((top_offset + cam_subrect->height) / 2 - 1,
1107 priv->base + VNELPRC_REG);
1108 break;
1109 default:
1110 iowrite32(top_offset, priv->base + VNSLPRC_REG);
1111 iowrite32(top_offset + cam_subrect->height - 1,
1112 priv->base + VNELPRC_REG);
1113 break;
1114 }
1115
1116 /* Set scaling coefficient */
1117 value = 0;
1118 if (cam_subrect->height != cam->out_height)
1119 value = (4096 * cam_subrect->height) / cam->out_height;
1120 dev_dbg(icd->parent, "YS Value: %x\n", value);
1121 iowrite32(value, priv->base + VNYS_REG);
1122
1123 value = 0;
1124 if (cam_subrect->width != cam->out_width)
1125 value = (4096 * cam_subrect->width) / cam->out_width;
1126
1127 /* Horizontal upscaling is up to double size */
1128 if (0 < value && value < 2048)
1129 value = 2048;
1130
1131 dev_dbg(icd->parent, "XS Value: %x\n", value);
1132 iowrite32(value, priv->base + VNXS_REG);
1133
1134 /* Horizontal upscaling is carried out by scaling down from double size */
1135 if (value < 4096)
1136 value *= 2;
1137
1138 set_coeff(priv, value);
1139
1140 /* Set Start/End Pixel/Line Post-Clip */
1141 iowrite32(0, priv->base + VNSPPOC_REG);
1142 iowrite32(0, priv->base + VNSLPOC_REG);
1143 iowrite32((cam->out_width - 1) << dsize, priv->base + VNEPPOC_REG);
1144 switch (priv->field) {
1145 case V4L2_FIELD_INTERLACED:
1146 case V4L2_FIELD_INTERLACED_TB:
1147 case V4L2_FIELD_INTERLACED_BT:
1148 iowrite32(cam->out_height / 2 - 1,
1149 priv->base + VNELPOC_REG);
1150 break;
1151 default:
1152 iowrite32(cam->out_height - 1, priv->base + VNELPOC_REG);
1153 break;
1154 }
1155
1156 iowrite32(ALIGN(cam->out_width, 0x10), priv->base + VNIS_REG);
1157
1158 return 0;
1159 }
1160
1161 static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc)
1162 {
1163 *vnmc = ioread32(priv->base + VNMC_REG);
1164 /* module disable */
1165 iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG);
1166 }
1167
1168 static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc)
1169 {
1170 unsigned long timeout = jiffies + 10 * HZ;
1171
1172 /*
1173 * Wait until the end of the current frame. It can take a long time,
1174 * but if it has been aborted by a MRST1 reset, it should exit sooner.
1175 */
1176 while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) &&
1177 time_before(jiffies, timeout))
1178 msleep(1);
1179
1180 if (time_after(jiffies, timeout)) {
1181 dev_err(priv->ici.v4l2_dev.dev,
1182 "Timeout waiting for frame end! Interface problem?\n");
1183 return;
1184 }
1185
1186 iowrite32(vnmc, priv->base + VNMC_REG);
1187 }
1188
1189 #define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \
1190 V4L2_MBUS_PCLK_SAMPLE_RISING | \
1191 V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
1192 V4L2_MBUS_HSYNC_ACTIVE_LOW | \
1193 V4L2_MBUS_VSYNC_ACTIVE_HIGH | \
1194 V4L2_MBUS_VSYNC_ACTIVE_LOW | \
1195 V4L2_MBUS_DATA_ACTIVE_HIGH)
1196
1197 static int rcar_vin_set_bus_param(struct soc_camera_device *icd)
1198 {
1199 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1200 struct rcar_vin_priv *priv = ici->priv;
1201 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1202 struct v4l2_mbus_config cfg;
1203 unsigned long common_flags;
1204 u32 vnmc;
1205 u32 val;
1206 int ret;
1207
1208 capture_stop_preserve(priv, &vnmc);
1209
1210 ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
1211 if (!ret) {
1212 common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
1213 if (!common_flags) {
1214 dev_warn(icd->parent,
1215 "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
1216 cfg.flags, VIN_MBUS_FLAGS);
1217 return -EINVAL;
1218 }
1219 } else if (ret != -ENOIOCTLCMD) {
1220 return ret;
1221 } else {
1222 common_flags = VIN_MBUS_FLAGS;
1223 }
1224
1225 /* Make choises, based on platform preferences */
1226 if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
1227 (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
1228 if (priv->pdata_flags & RCAR_VIN_HSYNC_ACTIVE_LOW)
1229 common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
1230 else
1231 common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
1232 }
1233
1234 if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
1235 (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
1236 if (priv->pdata_flags & RCAR_VIN_VSYNC_ACTIVE_LOW)
1237 common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
1238 else
1239 common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
1240 }
1241
1242 cfg.flags = common_flags;
1243 ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
1244 if (ret < 0 && ret != -ENOIOCTLCMD)
1245 return ret;
1246
1247 val = VNDMR2_FTEV | VNDMR2_VLV(1);
1248 if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
1249 val |= VNDMR2_VPS;
1250 if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
1251 val |= VNDMR2_HPS;
1252 iowrite32(val, priv->base + VNDMR2_REG);
1253
1254 ret = rcar_vin_set_rect(icd);
1255 if (ret < 0)
1256 return ret;
1257
1258 capture_restore(priv, vnmc);
1259
1260 return 0;
1261 }
1262
1263 static int rcar_vin_try_bus_param(struct soc_camera_device *icd,
1264 unsigned char buswidth)
1265 {
1266 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1267 struct v4l2_mbus_config cfg;
1268 int ret;
1269
1270 ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
1271 if (ret == -ENOIOCTLCMD)
1272 return 0;
1273 else if (ret)
1274 return ret;
1275
1276 if (buswidth > 24)
1277 return -EINVAL;
1278
1279 /* check is there common mbus flags */
1280 ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
1281 if (ret)
1282 return 0;
1283
1284 dev_warn(icd->parent,
1285 "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
1286 cfg.flags, VIN_MBUS_FLAGS);
1287
1288 return -EINVAL;
1289 }
1290
1291 static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt)
1292 {
1293 return fmt->packing == SOC_MBUS_PACKING_NONE ||
1294 (fmt->bits_per_sample > 8 &&
1295 fmt->packing == SOC_MBUS_PACKING_EXTEND16);
1296 }
1297
1298 static const struct soc_mbus_pixelfmt rcar_vin_formats[] = {
1299 {
1300 .fourcc = V4L2_PIX_FMT_NV16,
1301 .name = "NV16",
1302 .bits_per_sample = 8,
1303 .packing = SOC_MBUS_PACKING_2X8_PADHI,
1304 .order = SOC_MBUS_ORDER_LE,
1305 .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C,
1306 },
1307 {
1308 .fourcc = V4L2_PIX_FMT_YUYV,
1309 .name = "YUYV",
1310 .bits_per_sample = 16,
1311 .packing = SOC_MBUS_PACKING_NONE,
1312 .order = SOC_MBUS_ORDER_LE,
1313 .layout = SOC_MBUS_LAYOUT_PACKED,
1314 },
1315 {
1316 .fourcc = V4L2_PIX_FMT_UYVY,
1317 .name = "UYVY",
1318 .bits_per_sample = 16,
1319 .packing = SOC_MBUS_PACKING_NONE,
1320 .order = SOC_MBUS_ORDER_LE,
1321 .layout = SOC_MBUS_LAYOUT_PACKED,
1322 },
1323 {
1324 .fourcc = V4L2_PIX_FMT_RGB565,
1325 .name = "RGB565",
1326 .bits_per_sample = 16,
1327 .packing = SOC_MBUS_PACKING_NONE,
1328 .order = SOC_MBUS_ORDER_LE,
1329 .layout = SOC_MBUS_LAYOUT_PACKED,
1330 },
1331 {
1332 .fourcc = V4L2_PIX_FMT_RGB555X,
1333 .name = "ARGB1555",
1334 .bits_per_sample = 16,
1335 .packing = SOC_MBUS_PACKING_NONE,
1336 .order = SOC_MBUS_ORDER_LE,
1337 .layout = SOC_MBUS_LAYOUT_PACKED,
1338 },
1339 {
1340 .fourcc = V4L2_PIX_FMT_RGB32,
1341 .name = "RGB888",
1342 .bits_per_sample = 32,
1343 .packing = SOC_MBUS_PACKING_NONE,
1344 .order = SOC_MBUS_ORDER_LE,
1345 .layout = SOC_MBUS_LAYOUT_PACKED,
1346 },
1347 };
1348
1349 static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx,
1350 struct soc_camera_format_xlate *xlate)
1351 {
1352 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1353 struct device *dev = icd->parent;
1354 int ret, k, n;
1355 int formats = 0;
1356 struct rcar_vin_cam *cam;
1357 u32 code;
1358 const struct soc_mbus_pixelfmt *fmt;
1359
1360 ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
1361 if (ret < 0)
1362 return 0;
1363
1364 fmt = soc_mbus_get_fmtdesc(code);
1365 if (!fmt) {
1366 dev_warn(dev, "unsupported format code #%u: %d\n", idx, code);
1367 return 0;
1368 }
1369
1370 ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample);
1371 if (ret < 0)
1372 return 0;
1373
1374 if (!icd->host_priv) {
1375 struct v4l2_mbus_framefmt mf;
1376 struct v4l2_rect rect;
1377 struct device *dev = icd->parent;
1378 int shift;
1379
1380 ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
1381 if (ret < 0)
1382 return ret;
1383
1384 /* Cache current client geometry */
1385 ret = soc_camera_client_g_rect(sd, &rect);
1386 if (ret == -ENOIOCTLCMD) {
1387 /* Sensor driver doesn't support cropping */
1388 rect.left = 0;
1389 rect.top = 0;
1390 rect.width = mf.width;
1391 rect.height = mf.height;
1392 } else if (ret < 0) {
1393 return ret;
1394 }
1395
1396 /*
1397 * If sensor proposes too large format then try smaller ones:
1398 * 1280x960, 640x480, 320x240
1399 */
1400 for (shift = 0; shift < 3; shift++) {
1401 if (mf.width <= VIN_MAX_WIDTH &&
1402 mf.height <= VIN_MAX_HEIGHT)
1403 break;
1404
1405 mf.width = 1280 >> shift;
1406 mf.height = 960 >> shift;
1407 ret = v4l2_device_call_until_err(sd->v4l2_dev,
1408 soc_camera_grp_id(icd),
1409 video, s_mbus_fmt,
1410 &mf);
1411 if (ret < 0)
1412 return ret;
1413 }
1414
1415 if (shift == 3) {
1416 dev_err(dev,
1417 "Failed to configure the client below %ux%u\n",
1418 mf.width, mf.height);
1419 return -EIO;
1420 }
1421
1422 dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height);
1423
1424 cam = kzalloc(sizeof(*cam), GFP_KERNEL);
1425 if (!cam)
1426 return -ENOMEM;
1427 /*
1428 * We are called with current camera crop,
1429 * initialise subrect with it
1430 */
1431 cam->rect = rect;
1432 cam->subrect = rect;
1433 cam->width = mf.width;
1434 cam->height = mf.height;
1435 cam->out_width = mf.width;
1436 cam->out_height = mf.height;
1437
1438 icd->host_priv = cam;
1439 } else {
1440 cam = icd->host_priv;
1441 }
1442
1443 /* Beginning of a pass */
1444 if (!idx)
1445 cam->extra_fmt = NULL;
1446
1447 switch (code) {
1448 case MEDIA_BUS_FMT_YUYV8_1X16:
1449 case MEDIA_BUS_FMT_YUYV8_2X8:
1450 case MEDIA_BUS_FMT_YUYV10_2X10:
1451 if (cam->extra_fmt)
1452 break;
1453
1454 /* Add all our formats that can be generated by VIN */
1455 cam->extra_fmt = rcar_vin_formats;
1456
1457 n = ARRAY_SIZE(rcar_vin_formats);
1458 formats += n;
1459 for (k = 0; xlate && k < n; k++, xlate++) {
1460 xlate->host_fmt = &rcar_vin_formats[k];
1461 xlate->code = code;
1462 dev_dbg(dev, "Providing format %s using code %d\n",
1463 rcar_vin_formats[k].name, code);
1464 }
1465 break;
1466 default:
1467 if (!rcar_vin_packing_supported(fmt))
1468 return 0;
1469
1470 dev_dbg(dev, "Providing format %s in pass-through mode\n",
1471 fmt->name);
1472 break;
1473 }
1474
1475 /* Generic pass-through */
1476 formats++;
1477 if (xlate) {
1478 xlate->host_fmt = fmt;
1479 xlate->code = code;
1480 xlate++;
1481 }
1482
1483 return formats;
1484 }
1485
1486 static void rcar_vin_put_formats(struct soc_camera_device *icd)
1487 {
1488 kfree(icd->host_priv);
1489 icd->host_priv = NULL;
1490 }
1491
1492 static int rcar_vin_set_crop(struct soc_camera_device *icd,
1493 const struct v4l2_crop *a)
1494 {
1495 struct v4l2_crop a_writable = *a;
1496 const struct v4l2_rect *rect = &a_writable.c;
1497 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1498 struct rcar_vin_priv *priv = ici->priv;
1499 struct v4l2_crop cam_crop;
1500 struct rcar_vin_cam *cam = icd->host_priv;
1501 struct v4l2_rect *cam_rect = &cam_crop.c;
1502 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1503 struct device *dev = icd->parent;
1504 struct v4l2_mbus_framefmt mf;
1505 u32 vnmc;
1506 int ret, i;
1507
1508 dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height,
1509 rect->left, rect->top);
1510
1511 /* During camera cropping its output window can change too, stop VIN */
1512 capture_stop_preserve(priv, &vnmc);
1513 dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc);
1514
1515 /* Apply iterative camera S_CROP for new input window. */
1516 ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop,
1517 &cam->rect, &cam->subrect);
1518 if (ret < 0)
1519 return ret;
1520
1521 dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n",
1522 cam_rect->width, cam_rect->height,
1523 cam_rect->left, cam_rect->top);
1524
1525 /* On success cam_crop contains current camera crop */
1526
1527 /* Retrieve camera output window */
1528 ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
1529 if (ret < 0)
1530 return ret;
1531
1532 if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT)
1533 return -EINVAL;
1534
1535 /* Cache camera output window */
1536 cam->width = mf.width;
1537 cam->height = mf.height;
1538
1539 icd->user_width = cam->width;
1540 icd->user_height = cam->height;
1541
1542 cam->vin_left = rect->left & ~1;
1543 cam->vin_top = rect->top & ~1;
1544
1545 /* Use VIN cropping to crop to the new window. */
1546 ret = rcar_vin_set_rect(icd);
1547 if (ret < 0)
1548 return ret;
1549
1550 cam->subrect = *rect;
1551
1552 dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n",
1553 icd->user_width, icd->user_height,
1554 cam->vin_left, cam->vin_top);
1555
1556 /* Restore capture */
1557 for (i = 0; i < MAX_BUFFER_NUM; i++) {
1558 if (priv->queue_buf[i] && priv->state == STOPPED) {
1559 vnmc |= VNMC_ME;
1560 break;
1561 }
1562 }
1563 capture_restore(priv, vnmc);
1564
1565 /* Even if only camera cropping succeeded */
1566 return ret;
1567 }
1568
1569 static int rcar_vin_get_crop(struct soc_camera_device *icd,
1570 struct v4l2_crop *a)
1571 {
1572 struct rcar_vin_cam *cam = icd->host_priv;
1573
1574 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1575 a->c = cam->subrect;
1576
1577 return 0;
1578 }
1579
1580 /* Similar to set_crop multistage iterative algorithm */
1581 static int rcar_vin_set_fmt(struct soc_camera_device *icd,
1582 struct v4l2_format *f)
1583 {
1584 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1585 struct rcar_vin_priv *priv = ici->priv;
1586 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1587 struct rcar_vin_cam *cam = icd->host_priv;
1588 struct v4l2_pix_format *pix = &f->fmt.pix;
1589 struct v4l2_mbus_framefmt mf;
1590 struct device *dev = icd->parent;
1591 __u32 pixfmt = pix->pixelformat;
1592 const struct soc_camera_format_xlate *xlate;
1593 unsigned int vin_sub_width = 0, vin_sub_height = 0;
1594 int ret;
1595 bool can_scale;
1596 enum v4l2_field field;
1597 v4l2_std_id std;
1598
1599 dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n",
1600 pixfmt, pix->width, pix->height);
1601
1602 switch (pix->field) {
1603 default:
1604 pix->field = V4L2_FIELD_NONE;
1605 /* fall-through */
1606 case V4L2_FIELD_NONE:
1607 case V4L2_FIELD_TOP:
1608 case V4L2_FIELD_BOTTOM:
1609 case V4L2_FIELD_INTERLACED_TB:
1610 case V4L2_FIELD_INTERLACED_BT:
1611 field = pix->field;
1612 break;
1613 case V4L2_FIELD_INTERLACED:
1614 /* Query for standard if not explicitly mentioned _TB/_BT */
1615 ret = v4l2_subdev_call(sd, video, querystd, &std);
1616 if (ret < 0)
1617 std = V4L2_STD_625_50;
1618
1619 field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB :
1620 V4L2_FIELD_INTERLACED_BT;
1621 break;
1622 }
1623
1624 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
1625 if (!xlate) {
1626 dev_warn(dev, "Format %x not found\n", pixfmt);
1627 return -EINVAL;
1628 }
1629 /* Calculate client output geometry */
1630 soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf,
1631 12);
1632 mf.field = pix->field;
1633 mf.colorspace = pix->colorspace;
1634 mf.code = xlate->code;
1635
1636 switch (pixfmt) {
1637 case V4L2_PIX_FMT_RGB32:
1638 can_scale = priv->chip != RCAR_E1;
1639 break;
1640 case V4L2_PIX_FMT_UYVY:
1641 case V4L2_PIX_FMT_YUYV:
1642 case V4L2_PIX_FMT_RGB565:
1643 case V4L2_PIX_FMT_RGB555X:
1644 can_scale = true;
1645 break;
1646 default:
1647 can_scale = false;
1648 break;
1649 }
1650
1651 dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height);
1652
1653 ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect,
1654 &mf, &vin_sub_width, &vin_sub_height,
1655 can_scale, 12);
1656
1657 /* Done with the camera. Now see if we can improve the result */
1658 dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
1659 ret, mf.width, mf.height, pix->width, pix->height);
1660
1661 if (ret == -ENOIOCTLCMD)
1662 dev_dbg(dev, "Sensor doesn't support scaling\n");
1663 else if (ret < 0)
1664 return ret;
1665
1666 if (mf.code != xlate->code)
1667 return -EINVAL;
1668
1669 /* Prepare VIN crop */
1670 cam->width = mf.width;
1671 cam->height = mf.height;
1672
1673 /* Use VIN scaling to scale to the requested user window. */
1674
1675 /* We cannot scale up */
1676 if (pix->width > vin_sub_width)
1677 vin_sub_width = pix->width;
1678
1679 if (pix->height > vin_sub_height)
1680 vin_sub_height = pix->height;
1681
1682 pix->colorspace = mf.colorspace;
1683
1684 if (!can_scale) {
1685 pix->width = vin_sub_width;
1686 pix->height = vin_sub_height;
1687 }
1688
1689 /*
1690 * We have calculated CFLCR, the actual configuration will be performed
1691 * in rcar_vin_set_bus_param()
1692 */
1693
1694 dev_dbg(dev, "W: %u : %u, H: %u : %u\n",
1695 vin_sub_width, pix->width, vin_sub_height, pix->height);
1696
1697 cam->out_width = pix->width;
1698 cam->out_height = pix->height;
1699
1700 icd->current_fmt = xlate;
1701
1702 priv->field = field;
1703
1704 return 0;
1705 }
1706
1707 static int rcar_vin_try_fmt(struct soc_camera_device *icd,
1708 struct v4l2_format *f)
1709 {
1710 const struct soc_camera_format_xlate *xlate;
1711 struct v4l2_pix_format *pix = &f->fmt.pix;
1712 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1713 struct v4l2_mbus_framefmt mf;
1714 __u32 pixfmt = pix->pixelformat;
1715 int width, height;
1716 int ret;
1717
1718 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
1719 if (!xlate) {
1720 xlate = icd->current_fmt;
1721 dev_dbg(icd->parent, "Format %x not found, keeping %x\n",
1722 pixfmt, xlate->host_fmt->fourcc);
1723 pixfmt = xlate->host_fmt->fourcc;
1724 pix->pixelformat = pixfmt;
1725 pix->colorspace = icd->colorspace;
1726 }
1727
1728 /* FIXME: calculate using depth and bus width */
1729 v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1,
1730 &pix->height, 4, VIN_MAX_HEIGHT, 2, 0);
1731
1732 width = pix->width;
1733 height = pix->height;
1734
1735 /* let soc-camera calculate these values */
1736 pix->bytesperline = 0;
1737 pix->sizeimage = 0;
1738
1739 /* limit to sensor capabilities */
1740 mf.width = pix->width;
1741 mf.height = pix->height;
1742 mf.field = pix->field;
1743 mf.code = xlate->code;
1744 mf.colorspace = pix->colorspace;
1745
1746 ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd),
1747 video, try_mbus_fmt, &mf);
1748 if (ret < 0)
1749 return ret;
1750
1751 /* Adjust only if VIN cannot scale */
1752 if (pix->width > mf.width * 2)
1753 pix->width = mf.width * 2;
1754 if (pix->height > mf.height * 3)
1755 pix->height = mf.height * 3;
1756
1757 pix->field = mf.field;
1758 pix->colorspace = mf.colorspace;
1759
1760 if (pixfmt == V4L2_PIX_FMT_NV16) {
1761 /* FIXME: check against rect_max after converting soc-camera */
1762 /* We can scale precisely, need a bigger image from camera */
1763 if (pix->width < width || pix->height < height) {
1764 /*
1765 * We presume, the sensor behaves sanely, i.e. if
1766 * requested a bigger rectangle, it will not return a
1767 * smaller one.
1768 */
1769 mf.width = VIN_MAX_WIDTH;
1770 mf.height = VIN_MAX_HEIGHT;
1771 ret = v4l2_device_call_until_err(sd->v4l2_dev,
1772 soc_camera_grp_id(icd),
1773 video, try_mbus_fmt,
1774 &mf);
1775 if (ret < 0) {
1776 dev_err(icd->parent,
1777 "client try_fmt() = %d\n", ret);
1778 return ret;
1779 }
1780 }
1781 /* We will scale exactly */
1782 if (mf.width > width)
1783 pix->width = width;
1784 if (mf.height > height)
1785 pix->height = height;
1786 }
1787
1788 return ret;
1789 }
1790
1791 static unsigned int rcar_vin_poll(struct file *file, poll_table *pt)
1792 {
1793 struct soc_camera_device *icd = file->private_data;
1794
1795 return vb2_poll(&icd->vb2_vidq, file, pt);
1796 }
1797
1798 static int rcar_vin_querycap(struct soc_camera_host *ici,
1799 struct v4l2_capability *cap)
1800 {
1801 strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
1802 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1803 return 0;
1804 }
1805
1806 static int rcar_vin_init_videobuf2(struct vb2_queue *vq,
1807 struct soc_camera_device *icd)
1808 {
1809 vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1810 vq->io_modes = VB2_MMAP | VB2_USERPTR;
1811 vq->drv_priv = icd;
1812 vq->ops = &rcar_vin_vb2_ops;
1813 vq->mem_ops = &vb2_dma_contig_memops;
1814 vq->buf_struct_size = sizeof(struct rcar_vin_buffer);
1815 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1816
1817 return vb2_queue_init(vq);
1818 }
1819
1820 static struct soc_camera_host_ops rcar_vin_host_ops = {
1821 .owner = THIS_MODULE,
1822 .add = rcar_vin_add_device,
1823 .remove = rcar_vin_remove_device,
1824 .clock_start = rcar_vin_clock_start,
1825 .clock_stop = rcar_vin_clock_stop,
1826 .get_formats = rcar_vin_get_formats,
1827 .put_formats = rcar_vin_put_formats,
1828 .get_crop = rcar_vin_get_crop,
1829 .set_crop = rcar_vin_set_crop,
1830 .try_fmt = rcar_vin_try_fmt,
1831 .set_fmt = rcar_vin_set_fmt,
1832 .poll = rcar_vin_poll,
1833 .querycap = rcar_vin_querycap,
1834 .set_bus_param = rcar_vin_set_bus_param,
1835 .init_videobuf2 = rcar_vin_init_videobuf2,
1836 };
1837
1838 #ifdef CONFIG_OF
1839 static struct of_device_id rcar_vin_of_table[] = {
1840 { .compatible = "renesas,vin-r8a7794", .data = (void *)RCAR_GEN2 },
1841 { .compatible = "renesas,vin-r8a7793", .data = (void *)RCAR_GEN2 },
1842 { .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 },
1843 { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 },
1844 { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 },
1845 { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 },
1846 { },
1847 };
1848 MODULE_DEVICE_TABLE(of, rcar_vin_of_table);
1849 #endif
1850
1851 static struct platform_device_id rcar_vin_id_table[] = {
1852 { "r8a7791-vin", RCAR_GEN2 },
1853 { "r8a7790-vin", RCAR_GEN2 },
1854 { "r8a7779-vin", RCAR_H1 },
1855 { "r8a7778-vin", RCAR_M1 },
1856 { "uPD35004-vin", RCAR_E1 },
1857 {},
1858 };
1859 MODULE_DEVICE_TABLE(platform, rcar_vin_id_table);
1860
1861 static int rcar_vin_probe(struct platform_device *pdev)
1862 {
1863 const struct of_device_id *match = NULL;
1864 struct rcar_vin_priv *priv;
1865 struct resource *mem;
1866 struct rcar_vin_platform_data *pdata;
1867 unsigned int pdata_flags;
1868 int irq, ret;
1869
1870 if (pdev->dev.of_node) {
1871 struct v4l2_of_endpoint ep;
1872 struct device_node *np;
1873
1874 match = of_match_device(of_match_ptr(rcar_vin_of_table),
1875 &pdev->dev);
1876
1877 np = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
1878 if (!np) {
1879 dev_err(&pdev->dev, "could not find endpoint\n");
1880 return -EINVAL;
1881 }
1882
1883 ret = v4l2_of_parse_endpoint(np, &ep);
1884 if (ret) {
1885 dev_err(&pdev->dev, "could not parse endpoint\n");
1886 return ret;
1887 }
1888
1889 if (ep.bus_type == V4L2_MBUS_BT656)
1890 pdata_flags = RCAR_VIN_BT656;
1891 else {
1892 pdata_flags = 0;
1893 if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
1894 pdata_flags |= RCAR_VIN_HSYNC_ACTIVE_LOW;
1895 if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
1896 pdata_flags |= RCAR_VIN_VSYNC_ACTIVE_LOW;
1897 }
1898
1899 of_node_put(np);
1900
1901 dev_dbg(&pdev->dev, "pdata_flags = %08x\n", pdata_flags);
1902 } else {
1903 pdata = pdev->dev.platform_data;
1904 if (!pdata || !pdata->flags) {
1905 dev_err(&pdev->dev, "platform data not set\n");
1906 return -EINVAL;
1907 }
1908 pdata_flags = pdata->flags;
1909 }
1910
1911 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1912 if (mem == NULL)
1913 return -EINVAL;
1914
1915 irq = platform_get_irq(pdev, 0);
1916 if (irq <= 0)
1917 return -EINVAL;
1918
1919 priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv),
1920 GFP_KERNEL);
1921 if (!priv)
1922 return -ENOMEM;
1923
1924 priv->base = devm_ioremap_resource(&pdev->dev, mem);
1925 if (IS_ERR(priv->base))
1926 return PTR_ERR(priv->base);
1927
1928 ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED,
1929 dev_name(&pdev->dev), priv);
1930 if (ret)
1931 return ret;
1932
1933 priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1934 if (IS_ERR(priv->alloc_ctx))
1935 return PTR_ERR(priv->alloc_ctx);
1936
1937 priv->ici.priv = priv;
1938 priv->ici.v4l2_dev.dev = &pdev->dev;
1939 priv->ici.drv_name = dev_name(&pdev->dev);
1940 priv->ici.ops = &rcar_vin_host_ops;
1941
1942 priv->pdata_flags = pdata_flags;
1943 if (!match) {
1944 priv->ici.nr = pdev->id;
1945 priv->chip = pdev->id_entry->driver_data;
1946 } else {
1947 priv->ici.nr = of_alias_get_id(pdev->dev.of_node, "vin");
1948 priv->chip = (enum chip_id)match->data;
1949 }
1950
1951 spin_lock_init(&priv->lock);
1952 INIT_LIST_HEAD(&priv->capture);
1953
1954 priv->state = STOPPED;
1955
1956 pm_suspend_ignore_children(&pdev->dev, true);
1957 pm_runtime_enable(&pdev->dev);
1958
1959 ret = soc_camera_host_register(&priv->ici);
1960 if (ret)
1961 goto cleanup;
1962
1963 return 0;
1964
1965 cleanup:
1966 pm_runtime_disable(&pdev->dev);
1967 vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
1968
1969 return ret;
1970 }
1971
1972 static int rcar_vin_remove(struct platform_device *pdev)
1973 {
1974 struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
1975 struct rcar_vin_priv *priv = container_of(soc_host,
1976 struct rcar_vin_priv, ici);
1977
1978 soc_camera_host_unregister(soc_host);
1979 pm_runtime_disable(&pdev->dev);
1980 vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
1981
1982 return 0;
1983 }
1984
1985 static struct platform_driver rcar_vin_driver = {
1986 .probe = rcar_vin_probe,
1987 .remove = rcar_vin_remove,
1988 .driver = {
1989 .name = DRV_NAME,
1990 .of_match_table = of_match_ptr(rcar_vin_of_table),
1991 },
1992 .id_table = rcar_vin_id_table,
1993 };
1994
1995 module_platform_driver(rcar_vin_driver);
1996
1997 MODULE_LICENSE("GPL");
1998 MODULE_ALIAS("platform:rcar_vin");
1999 MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver");
Linux kernel - Deliverables
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