1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Rockchip ISP1 Driver - V4l capture device
4 *
5 * Copyright (C) 2019 Collabora, Ltd.
6 *
7 * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd.
8 * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
9 */
10
11 #include <linux/delay.h>
12 #include <linux/pm_runtime.h>
13 #include <media/v4l2-common.h>
14 #include <media/v4l2-event.h>
15 #include <media/v4l2-fh.h>
16 #include <media/v4l2-ioctl.h>
17 #include <media/v4l2-mc.h>
18 #include <media/v4l2-subdev.h>
19 #include <media/videobuf2-dma-contig.h>
20
21 #include "rkisp1-common.h"
22
23 /*
24 * NOTE: There are two capture video devices in rkisp1, selfpath and mainpath.
25 *
26 * differences between selfpath and mainpath
27 * available mp sink input: isp
28 * available sp sink input : isp, dma(TODO)
29 * available mp sink pad fmts: yuv422, raw
30 * available sp sink pad fmts: yuv422, yuv420......
31 * available mp source fmts: yuv, raw, jpeg(TODO)
32 * available sp source fmts: yuv, rgb
33 */
34
35 #define RKISP1_SP_DEV_NAME RKISP1_DRIVER_NAME "_selfpath"
36 #define RKISP1_MP_DEV_NAME RKISP1_DRIVER_NAME "_mainpath"
37
38 #define RKISP1_MIN_BUFFERS_NEEDED 3
39
40 enum rkisp1_plane {
41 RKISP1_PLANE_Y = 0,
42 RKISP1_PLANE_CB = 1,
43 RKISP1_PLANE_CR = 2
44 };
45
46 /*
47 * @fourcc: pixel format
48 * @fmt_type: helper filed for pixel format
49 * @uv_swap: if cb cr swapped, for yuv
50 * @write_format: defines how YCbCr self picture data is written to memory
51 * @output_format: defines sp output format
52 * @mbus: the mbus code on the src resizer pad that matches the pixel format
53 */
54 struct rkisp1_capture_fmt_cfg {
55 u32 fourcc;
56 u8 uv_swap;
57 u32 write_format;
58 u32 output_format;
59 u32 mbus;
60 };
61
62 struct rkisp1_capture_ops {
63 void (*config)(struct rkisp1_capture *cap);
64 void (*stop)(struct rkisp1_capture *cap);
65 void (*enable)(struct rkisp1_capture *cap);
66 void (*disable)(struct rkisp1_capture *cap);
67 void (*set_data_path)(struct rkisp1_capture *cap);
68 bool (*is_stopped)(struct rkisp1_capture *cap);
69 };
70
71 struct rkisp1_capture_config {
72 const struct rkisp1_capture_fmt_cfg *fmts;
73 int fmt_size;
74 struct {
75 u32 y_size_init;
76 u32 cb_size_init;
77 u32 cr_size_init;
78 u32 y_base_ad_init;
79 u32 cb_base_ad_init;
80 u32 cr_base_ad_init;
81 u32 y_offs_cnt_init;
82 u32 cb_offs_cnt_init;
83 u32 cr_offs_cnt_init;
84 } mi;
85 };
86
87 /*
88 * The supported pixel formats for mainpath. NOTE, pixel formats with identical 'mbus'
89 * are grouped together. This is assumed and used by the function rkisp1_cap_enum_mbus_codes
90 */
91 static const struct rkisp1_capture_fmt_cfg rkisp1_mp_fmts[] = {
92 /* yuv422 */
93 {
94 .fourcc = V4L2_PIX_FMT_YUYV,
95 .uv_swap = 0,
96 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUVINT,
97 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
98 }, {
99 .fourcc = V4L2_PIX_FMT_YUV422P,
100 .uv_swap = 0,
101 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
102 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
103 }, {
104 .fourcc = V4L2_PIX_FMT_NV16,
105 .uv_swap = 0,
106 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
107 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
108 }, {
109 .fourcc = V4L2_PIX_FMT_NV61,
110 .uv_swap = 1,
111 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
112 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
113 }, {
114 .fourcc = V4L2_PIX_FMT_YVU422M,
115 .uv_swap = 1,
116 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
117 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
118 },
119 /* yuv400 */
120 {
121 .fourcc = V4L2_PIX_FMT_GREY,
122 .uv_swap = 0,
123 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
124 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
125 },
126 /* yuv420 */
127 {
128 .fourcc = V4L2_PIX_FMT_NV21,
129 .uv_swap = 1,
130 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
131 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
132 }, {
133 .fourcc = V4L2_PIX_FMT_NV12,
134 .uv_swap = 0,
135 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
136 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
137 }, {
138 .fourcc = V4L2_PIX_FMT_NV21M,
139 .uv_swap = 1,
140 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
141 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
142 }, {
143 .fourcc = V4L2_PIX_FMT_NV12M,
144 .uv_swap = 0,
145 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA,
146 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
147 }, {
148 .fourcc = V4L2_PIX_FMT_YUV420,
149 .uv_swap = 0,
150 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
151 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
152 }, {
153 .fourcc = V4L2_PIX_FMT_YVU420,
154 .uv_swap = 1,
155 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
156 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
157 },
158 /* raw */
159 {
160 .fourcc = V4L2_PIX_FMT_SRGGB8,
161 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
162 .mbus = MEDIA_BUS_FMT_SRGGB8_1X8,
163 }, {
164 .fourcc = V4L2_PIX_FMT_SGRBG8,
165 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
166 .mbus = MEDIA_BUS_FMT_SGRBG8_1X8,
167 }, {
168 .fourcc = V4L2_PIX_FMT_SGBRG8,
169 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
170 .mbus = MEDIA_BUS_FMT_SGBRG8_1X8,
171 }, {
172 .fourcc = V4L2_PIX_FMT_SBGGR8,
173 .write_format = RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8,
174 .mbus = MEDIA_BUS_FMT_SBGGR8_1X8,
175 }, {
176 .fourcc = V4L2_PIX_FMT_SRGGB10,
177 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
178 .mbus = MEDIA_BUS_FMT_SRGGB10_1X10,
179 }, {
180 .fourcc = V4L2_PIX_FMT_SGRBG10,
181 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
182 .mbus = MEDIA_BUS_FMT_SGRBG10_1X10,
183 }, {
184 .fourcc = V4L2_PIX_FMT_SGBRG10,
185 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
186 .mbus = MEDIA_BUS_FMT_SGBRG10_1X10,
187 }, {
188 .fourcc = V4L2_PIX_FMT_SBGGR10,
189 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
190 .mbus = MEDIA_BUS_FMT_SBGGR10_1X10,
191 }, {
192 .fourcc = V4L2_PIX_FMT_SRGGB12,
193 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
194 .mbus = MEDIA_BUS_FMT_SRGGB12_1X12,
195 }, {
196 .fourcc = V4L2_PIX_FMT_SGRBG12,
197 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
198 .mbus = MEDIA_BUS_FMT_SGRBG12_1X12,
199 }, {
200 .fourcc = V4L2_PIX_FMT_SGBRG12,
201 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
202 .mbus = MEDIA_BUS_FMT_SGBRG12_1X12,
203 }, {
204 .fourcc = V4L2_PIX_FMT_SBGGR12,
205 .write_format = RKISP1_MI_CTRL_MP_WRITE_RAW12,
206 .mbus = MEDIA_BUS_FMT_SBGGR12_1X12,
207 },
208 };
209
210 /*
211 * The supported pixel formats for selfpath. NOTE, pixel formats with identical 'mbus'
212 * are grouped together. This is assumed and used by the function rkisp1_cap_enum_mbus_codes
213 */
214 static const struct rkisp1_capture_fmt_cfg rkisp1_sp_fmts[] = {
215 /* yuv422 */
216 {
217 .fourcc = V4L2_PIX_FMT_YUYV,
218 .uv_swap = 0,
219 .write_format = RKISP1_MI_CTRL_SP_WRITE_INT,
220 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
221 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
222 }, {
223 .fourcc = V4L2_PIX_FMT_YUV422P,
224 .uv_swap = 0,
225 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
226 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
227 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
228 }, {
229 .fourcc = V4L2_PIX_FMT_NV16,
230 .uv_swap = 0,
231 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
232 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
233 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
234 }, {
235 .fourcc = V4L2_PIX_FMT_NV61,
236 .uv_swap = 1,
237 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
238 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
239 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
240 }, {
241 .fourcc = V4L2_PIX_FMT_YVU422M,
242 .uv_swap = 1,
243 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
244 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
245 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
246 },
247 /* yuv400 */
248 {
249 .fourcc = V4L2_PIX_FMT_GREY,
250 .uv_swap = 0,
251 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
252 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV400,
253 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
254 },
255 /* rgb */
256 {
257 .fourcc = V4L2_PIX_FMT_XBGR32,
258 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
259 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_RGB888,
260 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
261 }, {
262 .fourcc = V4L2_PIX_FMT_RGB565,
263 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
264 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_RGB565,
265 .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
266 },
267 /* yuv420 */
268 {
269 .fourcc = V4L2_PIX_FMT_NV21,
270 .uv_swap = 1,
271 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
272 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
273 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
274 }, {
275 .fourcc = V4L2_PIX_FMT_NV12,
276 .uv_swap = 0,
277 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
278 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
279 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
280 }, {
281 .fourcc = V4L2_PIX_FMT_NV21M,
282 .uv_swap = 1,
283 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
284 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
285 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
286 }, {
287 .fourcc = V4L2_PIX_FMT_NV12M,
288 .uv_swap = 0,
289 .write_format = RKISP1_MI_CTRL_SP_WRITE_SPLA,
290 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
291 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
292 }, {
293 .fourcc = V4L2_PIX_FMT_YUV420,
294 .uv_swap = 0,
295 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
296 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
297 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
298 }, {
299 .fourcc = V4L2_PIX_FMT_YVU420,
300 .uv_swap = 1,
301 .write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
302 .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV420,
303 .mbus = MEDIA_BUS_FMT_YUYV8_1_5X8,
304 },
305 };
306
307 static const struct rkisp1_capture_config rkisp1_capture_config_mp = {
308 .fmts = rkisp1_mp_fmts,
309 .fmt_size = ARRAY_SIZE(rkisp1_mp_fmts),
310 .mi = {
311 .y_size_init = RKISP1_CIF_MI_MP_Y_SIZE_INIT,
312 .cb_size_init = RKISP1_CIF_MI_MP_CB_SIZE_INIT,
313 .cr_size_init = RKISP1_CIF_MI_MP_CR_SIZE_INIT,
314 .y_base_ad_init = RKISP1_CIF_MI_MP_Y_BASE_AD_INIT,
315 .cb_base_ad_init = RKISP1_CIF_MI_MP_CB_BASE_AD_INIT,
316 .cr_base_ad_init = RKISP1_CIF_MI_MP_CR_BASE_AD_INIT,
317 .y_offs_cnt_init = RKISP1_CIF_MI_MP_Y_OFFS_CNT_INIT,
318 .cb_offs_cnt_init = RKISP1_CIF_MI_MP_CB_OFFS_CNT_INIT,
319 .cr_offs_cnt_init = RKISP1_CIF_MI_MP_CR_OFFS_CNT_INIT,
320 },
321 };
322
323 static const struct rkisp1_capture_config rkisp1_capture_config_sp = {
324 .fmts = rkisp1_sp_fmts,
325 .fmt_size = ARRAY_SIZE(rkisp1_sp_fmts),
326 .mi = {
327 .y_size_init = RKISP1_CIF_MI_SP_Y_SIZE_INIT,
328 .cb_size_init = RKISP1_CIF_MI_SP_CB_SIZE_INIT,
329 .cr_size_init = RKISP1_CIF_MI_SP_CR_SIZE_INIT,
330 .y_base_ad_init = RKISP1_CIF_MI_SP_Y_BASE_AD_INIT,
331 .cb_base_ad_init = RKISP1_CIF_MI_SP_CB_BASE_AD_INIT,
332 .cr_base_ad_init = RKISP1_CIF_MI_SP_CR_BASE_AD_INIT,
333 .y_offs_cnt_init = RKISP1_CIF_MI_SP_Y_OFFS_CNT_INIT,
334 .cb_offs_cnt_init = RKISP1_CIF_MI_SP_CB_OFFS_CNT_INIT,
335 .cr_offs_cnt_init = RKISP1_CIF_MI_SP_CR_OFFS_CNT_INIT,
336 },
337 };
338
339 static inline struct rkisp1_vdev_node *
rkisp1_vdev_to_node(struct video_device * vdev)340 rkisp1_vdev_to_node(struct video_device *vdev)
341 {
342 return container_of(vdev, struct rkisp1_vdev_node, vdev);
343 }
344
rkisp1_cap_enum_mbus_codes(struct rkisp1_capture * cap,struct v4l2_subdev_mbus_code_enum * code)345 int rkisp1_cap_enum_mbus_codes(struct rkisp1_capture *cap,
346 struct v4l2_subdev_mbus_code_enum *code)
347 {
348 const struct rkisp1_capture_fmt_cfg *fmts = cap->config->fmts;
349 /*
350 * initialize curr_mbus to non existing mbus code 0 to ensure it is
351 * different from fmts[0].mbus
352 */
353 u32 curr_mbus = 0;
354 int i, n = 0;
355
356 for (i = 0; i < cap->config->fmt_size; i++) {
357 if (fmts[i].mbus == curr_mbus)
358 continue;
359
360 curr_mbus = fmts[i].mbus;
361 if (n++ == code->index) {
362 code->code = curr_mbus;
363 return 0;
364 }
365 }
366 return -EINVAL;
367 }
368
369 /* ----------------------------------------------------------------------------
370 * Stream operations for self-picture path (sp) and main-picture path (mp)
371 */
372
rkisp1_mi_config_ctrl(struct rkisp1_capture * cap)373 static void rkisp1_mi_config_ctrl(struct rkisp1_capture *cap)
374 {
375 u32 mi_ctrl = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL);
376
377 mi_ctrl &= ~GENMASK(17, 16);
378 mi_ctrl |= RKISP1_CIF_MI_CTRL_BURST_LEN_LUM_64;
379
380 mi_ctrl &= ~GENMASK(19, 18);
381 mi_ctrl |= RKISP1_CIF_MI_CTRL_BURST_LEN_CHROM_64;
382
383 mi_ctrl |= RKISP1_CIF_MI_CTRL_INIT_BASE_EN |
384 RKISP1_CIF_MI_CTRL_INIT_OFFSET_EN;
385
386 rkisp1_write(cap->rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
387 }
388
rkisp1_pixfmt_comp_size(const struct v4l2_pix_format_mplane * pixm,unsigned int component)389 static u32 rkisp1_pixfmt_comp_size(const struct v4l2_pix_format_mplane *pixm,
390 unsigned int component)
391 {
392 /*
393 * If packed format, then plane_fmt[0].sizeimage is the sum of all
394 * components, so we need to calculate just the size of Y component.
395 * See rkisp1_fill_pixfmt().
396 */
397 if (!component && pixm->num_planes == 1)
398 return pixm->plane_fmt[0].bytesperline * pixm->height;
399 return pixm->plane_fmt[component].sizeimage;
400 }
401
rkisp1_irq_frame_end_enable(struct rkisp1_capture * cap)402 static void rkisp1_irq_frame_end_enable(struct rkisp1_capture *cap)
403 {
404 u32 mi_imsc = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_IMSC);
405
406 mi_imsc |= RKISP1_CIF_MI_FRAME(cap);
407 rkisp1_write(cap->rkisp1, mi_imsc, RKISP1_CIF_MI_IMSC);
408 }
409
rkisp1_mp_config(struct rkisp1_capture * cap)410 static void rkisp1_mp_config(struct rkisp1_capture *cap)
411 {
412 const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt;
413 struct rkisp1_device *rkisp1 = cap->rkisp1;
414 u32 reg;
415
416 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_Y),
417 cap->config->mi.y_size_init);
418 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CB),
419 cap->config->mi.cb_size_init);
420 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CR),
421 cap->config->mi.cr_size_init);
422
423 rkisp1_irq_frame_end_enable(cap);
424
425 /* set uv swapping for semiplanar formats */
426 if (cap->pix.info->comp_planes == 2) {
427 reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_XTD_FORMAT_CTRL);
428 if (cap->pix.cfg->uv_swap)
429 reg |= RKISP1_CIF_MI_XTD_FMT_CTRL_MP_CB_CR_SWAP;
430 else
431 reg &= ~RKISP1_CIF_MI_XTD_FMT_CTRL_MP_CB_CR_SWAP;
432 rkisp1_write(rkisp1, reg, RKISP1_CIF_MI_XTD_FORMAT_CTRL);
433 }
434
435 rkisp1_mi_config_ctrl(cap);
436
437 reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_CTRL);
438 reg &= ~RKISP1_MI_CTRL_MP_FMT_MASK;
439 reg |= cap->pix.cfg->write_format;
440 rkisp1_write(rkisp1, reg, RKISP1_CIF_MI_CTRL);
441
442 reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_CTRL);
443 reg |= RKISP1_CIF_MI_MP_AUTOUPDATE_ENABLE;
444 rkisp1_write(rkisp1, reg, RKISP1_CIF_MI_CTRL);
445 }
446
rkisp1_sp_config(struct rkisp1_capture * cap)447 static void rkisp1_sp_config(struct rkisp1_capture *cap)
448 {
449 const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt;
450 struct rkisp1_device *rkisp1 = cap->rkisp1;
451 u32 mi_ctrl, reg;
452
453 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_Y),
454 cap->config->mi.y_size_init);
455 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CB),
456 cap->config->mi.cb_size_init);
457 rkisp1_write(rkisp1, rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CR),
458 cap->config->mi.cr_size_init);
459
460 rkisp1_write(rkisp1, pixm->width, RKISP1_CIF_MI_SP_Y_PIC_WIDTH);
461 rkisp1_write(rkisp1, pixm->height, RKISP1_CIF_MI_SP_Y_PIC_HEIGHT);
462 rkisp1_write(rkisp1, cap->sp_y_stride, RKISP1_CIF_MI_SP_Y_LLENGTH);
463
464 rkisp1_irq_frame_end_enable(cap);
465
466 /* set uv swapping for semiplanar formats */
467 if (cap->pix.info->comp_planes == 2) {
468 reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_XTD_FORMAT_CTRL);
469 if (cap->pix.cfg->uv_swap)
470 reg |= RKISP1_CIF_MI_XTD_FMT_CTRL_SP_CB_CR_SWAP;
471 else
472 reg &= ~RKISP1_CIF_MI_XTD_FMT_CTRL_SP_CB_CR_SWAP;
473 rkisp1_write(rkisp1, reg, RKISP1_CIF_MI_XTD_FORMAT_CTRL);
474 }
475
476 rkisp1_mi_config_ctrl(cap);
477
478 mi_ctrl = rkisp1_read(rkisp1, RKISP1_CIF_MI_CTRL);
479 mi_ctrl &= ~RKISP1_MI_CTRL_SP_FMT_MASK;
480 mi_ctrl |= cap->pix.cfg->write_format |
481 RKISP1_MI_CTRL_SP_INPUT_YUV422 |
482 cap->pix.cfg->output_format |
483 RKISP1_CIF_MI_SP_AUTOUPDATE_ENABLE;
484 rkisp1_write(rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
485 }
486
rkisp1_mp_disable(struct rkisp1_capture * cap)487 static void rkisp1_mp_disable(struct rkisp1_capture *cap)
488 {
489 u32 mi_ctrl = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL);
490
491 mi_ctrl &= ~(RKISP1_CIF_MI_CTRL_MP_ENABLE |
492 RKISP1_CIF_MI_CTRL_RAW_ENABLE);
493 rkisp1_write(cap->rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
494 }
495
rkisp1_sp_disable(struct rkisp1_capture * cap)496 static void rkisp1_sp_disable(struct rkisp1_capture *cap)
497 {
498 u32 mi_ctrl = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL);
499
500 mi_ctrl &= ~RKISP1_CIF_MI_CTRL_SP_ENABLE;
501 rkisp1_write(cap->rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
502 }
503
rkisp1_mp_enable(struct rkisp1_capture * cap)504 static void rkisp1_mp_enable(struct rkisp1_capture *cap)
505 {
506 u32 mi_ctrl;
507
508 rkisp1_mp_disable(cap);
509
510 mi_ctrl = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL);
511 if (v4l2_is_format_bayer(cap->pix.info))
512 mi_ctrl |= RKISP1_CIF_MI_CTRL_RAW_ENABLE;
513 /* YUV */
514 else
515 mi_ctrl |= RKISP1_CIF_MI_CTRL_MP_ENABLE;
516
517 rkisp1_write(cap->rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
518 }
519
rkisp1_sp_enable(struct rkisp1_capture * cap)520 static void rkisp1_sp_enable(struct rkisp1_capture *cap)
521 {
522 u32 mi_ctrl = rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL);
523
524 mi_ctrl |= RKISP1_CIF_MI_CTRL_SP_ENABLE;
525 rkisp1_write(cap->rkisp1, mi_ctrl, RKISP1_CIF_MI_CTRL);
526 }
527
rkisp1_mp_sp_stop(struct rkisp1_capture * cap)528 static void rkisp1_mp_sp_stop(struct rkisp1_capture *cap)
529 {
530 if (!cap->is_streaming)
531 return;
532 rkisp1_write(cap->rkisp1,
533 RKISP1_CIF_MI_FRAME(cap), RKISP1_CIF_MI_ICR);
534 cap->ops->disable(cap);
535 }
536
rkisp1_mp_is_stopped(struct rkisp1_capture * cap)537 static bool rkisp1_mp_is_stopped(struct rkisp1_capture *cap)
538 {
539 u32 en = RKISP1_CIF_MI_CTRL_SHD_MP_IN_ENABLED |
540 RKISP1_CIF_MI_CTRL_SHD_RAW_OUT_ENABLED;
541
542 return !(rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL_SHD) & en);
543 }
544
rkisp1_sp_is_stopped(struct rkisp1_capture * cap)545 static bool rkisp1_sp_is_stopped(struct rkisp1_capture *cap)
546 {
547 return !(rkisp1_read(cap->rkisp1, RKISP1_CIF_MI_CTRL_SHD) &
548 RKISP1_CIF_MI_CTRL_SHD_SP_IN_ENABLED);
549 }
550
rkisp1_mp_set_data_path(struct rkisp1_capture * cap)551 static void rkisp1_mp_set_data_path(struct rkisp1_capture *cap)
552 {
553 u32 dpcl = rkisp1_read(cap->rkisp1, RKISP1_CIF_VI_DPCL);
554
555 dpcl = dpcl | RKISP1_CIF_VI_DPCL_CHAN_MODE_MP |
556 RKISP1_CIF_VI_DPCL_MP_MUX_MRSZ_MI;
557 rkisp1_write(cap->rkisp1, dpcl, RKISP1_CIF_VI_DPCL);
558 }
559
rkisp1_sp_set_data_path(struct rkisp1_capture * cap)560 static void rkisp1_sp_set_data_path(struct rkisp1_capture *cap)
561 {
562 u32 dpcl = rkisp1_read(cap->rkisp1, RKISP1_CIF_VI_DPCL);
563
564 dpcl |= RKISP1_CIF_VI_DPCL_CHAN_MODE_SP;
565 rkisp1_write(cap->rkisp1, dpcl, RKISP1_CIF_VI_DPCL);
566 }
567
568 static const struct rkisp1_capture_ops rkisp1_capture_ops_mp = {
569 .config = rkisp1_mp_config,
570 .enable = rkisp1_mp_enable,
571 .disable = rkisp1_mp_disable,
572 .stop = rkisp1_mp_sp_stop,
573 .set_data_path = rkisp1_mp_set_data_path,
574 .is_stopped = rkisp1_mp_is_stopped,
575 };
576
577 static const struct rkisp1_capture_ops rkisp1_capture_ops_sp = {
578 .config = rkisp1_sp_config,
579 .enable = rkisp1_sp_enable,
580 .disable = rkisp1_sp_disable,
581 .stop = rkisp1_mp_sp_stop,
582 .set_data_path = rkisp1_sp_set_data_path,
583 .is_stopped = rkisp1_sp_is_stopped,
584 };
585
586 /* ----------------------------------------------------------------------------
587 * Frame buffer operations
588 */
589
rkisp1_dummy_buf_create(struct rkisp1_capture * cap)590 static int rkisp1_dummy_buf_create(struct rkisp1_capture *cap)
591 {
592 const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt;
593 struct rkisp1_dummy_buffer *dummy_buf = &cap->buf.dummy;
594
595 dummy_buf->size = max3(rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_Y),
596 rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CB),
597 rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CR));
598
599 /* The driver never access vaddr, no mapping is required */
600 dummy_buf->vaddr = dma_alloc_attrs(cap->rkisp1->dev,
601 dummy_buf->size,
602 &dummy_buf->dma_addr,
603 GFP_KERNEL,
604 DMA_ATTR_NO_KERNEL_MAPPING);
605 if (!dummy_buf->vaddr)
606 return -ENOMEM;
607
608 return 0;
609 }
610
rkisp1_dummy_buf_destroy(struct rkisp1_capture * cap)611 static void rkisp1_dummy_buf_destroy(struct rkisp1_capture *cap)
612 {
613 dma_free_attrs(cap->rkisp1->dev,
614 cap->buf.dummy.size, cap->buf.dummy.vaddr,
615 cap->buf.dummy.dma_addr, DMA_ATTR_NO_KERNEL_MAPPING);
616 }
617
rkisp1_set_next_buf(struct rkisp1_capture * cap)618 static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
619 {
620 cap->buf.curr = cap->buf.next;
621 cap->buf.next = NULL;
622
623 if (!list_empty(&cap->buf.queue)) {
624 u32 *buff_addr;
625
626 cap->buf.next = list_first_entry(&cap->buf.queue, struct rkisp1_buffer, queue);
627 list_del(&cap->buf.next->queue);
628
629 buff_addr = cap->buf.next->buff_addr;
630
631 rkisp1_write(cap->rkisp1,
632 buff_addr[RKISP1_PLANE_Y],
633 cap->config->mi.y_base_ad_init);
634 rkisp1_write(cap->rkisp1,
635 buff_addr[RKISP1_PLANE_CB],
636 cap->config->mi.cb_base_ad_init);
637 rkisp1_write(cap->rkisp1,
638 buff_addr[RKISP1_PLANE_CR],
639 cap->config->mi.cr_base_ad_init);
640 } else {
641 /*
642 * Use the dummy space allocated by dma_alloc_coherent to
643 * throw data if there is no available buffer.
644 */
645 rkisp1_write(cap->rkisp1,
646 cap->buf.dummy.dma_addr,
647 cap->config->mi.y_base_ad_init);
648 rkisp1_write(cap->rkisp1,
649 cap->buf.dummy.dma_addr,
650 cap->config->mi.cb_base_ad_init);
651 rkisp1_write(cap->rkisp1,
652 cap->buf.dummy.dma_addr,
653 cap->config->mi.cr_base_ad_init);
654 }
655
656 /* Set plane offsets */
657 rkisp1_write(cap->rkisp1, 0, cap->config->mi.y_offs_cnt_init);
658 rkisp1_write(cap->rkisp1, 0, cap->config->mi.cb_offs_cnt_init);
659 rkisp1_write(cap->rkisp1, 0, cap->config->mi.cr_offs_cnt_init);
660 }
661
662 /*
663 * This function is called when a frame end comes. The next frame
664 * is processing and we should set up buffer for next-next frame,
665 * otherwise it will overflow.
666 */
rkisp1_handle_buffer(struct rkisp1_capture * cap)667 static void rkisp1_handle_buffer(struct rkisp1_capture *cap)
668 {
669 struct rkisp1_isp *isp = &cap->rkisp1->isp;
670 struct rkisp1_buffer *curr_buf;
671
672 spin_lock(&cap->buf.lock);
673 curr_buf = cap->buf.curr;
674
675 if (curr_buf) {
676 curr_buf->vb.sequence = isp->frame_sequence;
677 curr_buf->vb.vb2_buf.timestamp = ktime_get_boottime_ns();
678 curr_buf->vb.field = V4L2_FIELD_NONE;
679 vb2_buffer_done(&curr_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
680 } else {
681 cap->rkisp1->debug.frame_drop[cap->id]++;
682 }
683
684 rkisp1_set_next_buf(cap);
685 spin_unlock(&cap->buf.lock);
686 }
687
rkisp1_capture_isr(int irq,void * ctx)688 irqreturn_t rkisp1_capture_isr(int irq, void *ctx)
689 {
690 struct device *dev = ctx;
691 struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
692 unsigned int i;
693 u32 status;
694
695 status = rkisp1_read(rkisp1, RKISP1_CIF_MI_MIS);
696 if (!status)
697 return IRQ_NONE;
698
699 rkisp1_write(rkisp1, status, RKISP1_CIF_MI_ICR);
700
701 for (i = 0; i < ARRAY_SIZE(rkisp1->capture_devs); ++i) {
702 struct rkisp1_capture *cap = &rkisp1->capture_devs[i];
703
704 if (!(status & RKISP1_CIF_MI_FRAME(cap)))
705 continue;
706 if (!cap->is_stopping) {
707 rkisp1_handle_buffer(cap);
708 continue;
709 }
710 /*
711 * Make sure stream is actually stopped, whose state
712 * can be read from the shadow register, before
713 * wake_up() thread which would immediately free all
714 * frame buffers. stop() takes effect at the next
715 * frame end that sync the configurations to shadow
716 * regs.
717 */
718 if (!cap->ops->is_stopped(cap)) {
719 cap->ops->stop(cap);
720 continue;
721 }
722 cap->is_stopping = false;
723 cap->is_streaming = false;
724 wake_up(&cap->done);
725 }
726
727 return IRQ_HANDLED;
728 }
729
730 /* ----------------------------------------------------------------------------
731 * Vb2 operations
732 */
733
rkisp1_vb2_queue_setup(struct vb2_queue * queue,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])734 static int rkisp1_vb2_queue_setup(struct vb2_queue *queue,
735 unsigned int *num_buffers,
736 unsigned int *num_planes,
737 unsigned int sizes[],
738 struct device *alloc_devs[])
739 {
740 struct rkisp1_capture *cap = queue->drv_priv;
741 const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt;
742 unsigned int i;
743
744 if (*num_planes) {
745 if (*num_planes != pixm->num_planes)
746 return -EINVAL;
747
748 for (i = 0; i < pixm->num_planes; i++)
749 if (sizes[i] < pixm->plane_fmt[i].sizeimage)
750 return -EINVAL;
751 } else {
752 *num_planes = pixm->num_planes;
753 for (i = 0; i < pixm->num_planes; i++)
754 sizes[i] = pixm->plane_fmt[i].sizeimage;
755 }
756
757 return 0;
758 }
759
rkisp1_vb2_buf_init(struct vb2_buffer * vb)760 static int rkisp1_vb2_buf_init(struct vb2_buffer *vb)
761 {
762 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
763 struct rkisp1_buffer *ispbuf =
764 container_of(vbuf, struct rkisp1_buffer, vb);
765 struct rkisp1_capture *cap = vb->vb2_queue->drv_priv;
766 const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt;
767 unsigned int i;
768
769 memset(ispbuf->buff_addr, 0, sizeof(ispbuf->buff_addr));
770 for (i = 0; i < pixm->num_planes; i++)
771 ispbuf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
772
773 /* Convert to non-MPLANE */
774 if (pixm->num_planes == 1) {
775 ispbuf->buff_addr[RKISP1_PLANE_CB] =
776 ispbuf->buff_addr[RKISP1_PLANE_Y] +
777 rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_Y);
778 ispbuf->buff_addr[RKISP1_PLANE_CR] =
779 ispbuf->buff_addr[RKISP1_PLANE_CB] +
780 rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CB);
781 }
782
783 /*
784 * uv swap can be supported for planar formats by switching
785 * the address of cb and cr
786 */
787 if (cap->pix.info->comp_planes == 3 && cap->pix.cfg->uv_swap)
788 swap(ispbuf->buff_addr[RKISP1_PLANE_CR],
789 ispbuf->buff_addr[RKISP1_PLANE_CB]);
790 return 0;
791 }
792
rkisp1_vb2_buf_queue(struct vb2_buffer * vb)793 static void rkisp1_vb2_buf_queue(struct vb2_buffer *vb)
794 {
795 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
796 struct rkisp1_buffer *ispbuf =
797 container_of(vbuf, struct rkisp1_buffer, vb);
798 struct rkisp1_capture *cap = vb->vb2_queue->drv_priv;
799
800 spin_lock_irq(&cap->buf.lock);
801 list_add_tail(&ispbuf->queue, &cap->buf.queue);
802 spin_unlock_irq(&cap->buf.lock);
803 }
804
rkisp1_vb2_buf_prepare(struct vb2_buffer * vb)805 static int rkisp1_vb2_buf_prepare(struct vb2_buffer *vb)
806 {
807 struct rkisp1_capture *cap = vb->vb2_queue->drv_priv;
808 unsigned int i;
809
810 for (i = 0; i < cap->pix.fmt.num_planes; i++) {
811 unsigned long size = cap->pix.fmt.plane_fmt[i].sizeimage;
812
813 if (vb2_plane_size(vb, i) < size) {
814 dev_err(cap->rkisp1->dev,
815 "User buffer too small (%ld < %ld)\n",
816 vb2_plane_size(vb, i), size);
817 return -EINVAL;
818 }
819 vb2_set_plane_payload(vb, i, size);
820 }
821
822 return 0;
823 }
824
rkisp1_return_all_buffers(struct rkisp1_capture * cap,enum vb2_buffer_state state)825 static void rkisp1_return_all_buffers(struct rkisp1_capture *cap,
826 enum vb2_buffer_state state)
827 {
828 struct rkisp1_buffer *buf;
829
830 spin_lock_irq(&cap->buf.lock);
831 if (cap->buf.curr) {
832 vb2_buffer_done(&cap->buf.curr->vb.vb2_buf, state);
833 cap->buf.curr = NULL;
834 }
835 if (cap->buf.next) {
836 vb2_buffer_done(&cap->buf.next->vb.vb2_buf, state);
837 cap->buf.next = NULL;
838 }
839 while (!list_empty(&cap->buf.queue)) {
840 buf = list_first_entry(&cap->buf.queue,
841 struct rkisp1_buffer, queue);
842 list_del(&buf->queue);
843 vb2_buffer_done(&buf->vb.vb2_buf, state);
844 }
845 spin_unlock_irq(&cap->buf.lock);
846 }
847
848 /*
849 * Most registers inside the rockchip ISP1 have shadow register since
850 * they must not be changed while processing a frame.
851 * Usually, each sub-module updates its shadow register after
852 * processing the last pixel of a frame.
853 */
rkisp1_cap_stream_enable(struct rkisp1_capture * cap)854 static void rkisp1_cap_stream_enable(struct rkisp1_capture *cap)
855 {
856 struct rkisp1_device *rkisp1 = cap->rkisp1;
857 struct rkisp1_capture *other = &rkisp1->capture_devs[cap->id ^ 1];
858
859 cap->ops->set_data_path(cap);
860 cap->ops->config(cap);
861
862 /* Setup a buffer for the next frame */
863 spin_lock_irq(&cap->buf.lock);
864 rkisp1_set_next_buf(cap);
865 cap->ops->enable(cap);
866 /* It's safe to configure ACTIVE and SHADOW registers for the
867 * first stream. While when the second is starting, do NOT
868 * force update because it also updates the first one.
869 *
870 * The latter case would drop one more buffer(that is 2) since
871 * there's no buffer in a shadow register when the second FE received.
872 * This's also required because the second FE maybe corrupt
873 * especially when run at 120fps.
874 */
875 if (!other->is_streaming) {
876 /* force cfg update */
877 rkisp1_write(rkisp1,
878 RKISP1_CIF_MI_INIT_SOFT_UPD, RKISP1_CIF_MI_INIT);
879 rkisp1_set_next_buf(cap);
880 }
881 spin_unlock_irq(&cap->buf.lock);
882 cap->is_streaming = true;
883 }
884
rkisp1_cap_stream_disable(struct rkisp1_capture * cap)885 static void rkisp1_cap_stream_disable(struct rkisp1_capture *cap)
886 {
887 int ret;
888
889 /* Stream should stop in interrupt. If it doesn't, stop it by force. */
890 cap->is_stopping = true;
891 ret = wait_event_timeout(cap->done,
892 !cap->is_streaming,
893 msecs_to_jiffies(1000));
894 if (!ret) {
895 cap->rkisp1->debug.stop_timeout[cap->id]++;
896 cap->ops->stop(cap);
897 cap->is_stopping = false;
898 cap->is_streaming = false;
899 }
900 }
901
902 /*
903 * rkisp1_pipeline_stream_disable - disable nodes in the pipeline
904 *
905 * Call s_stream(false) in the reverse order from
906 * rkisp1_pipeline_stream_enable() and disable the DMA engine.
907 * Should be called before media_pipeline_stop()
908 */
rkisp1_pipeline_stream_disable(struct rkisp1_capture * cap)909 static void rkisp1_pipeline_stream_disable(struct rkisp1_capture *cap)
910 __must_hold(&cap->rkisp1->stream_lock)
911 {
912 struct rkisp1_device *rkisp1 = cap->rkisp1;
913
914 rkisp1_cap_stream_disable(cap);
915
916 /*
917 * If the other capture is streaming, isp and sensor nodes shouldn't
918 * be disabled, skip them.
919 */
920 if (rkisp1->pipe.streaming_count < 2) {
921 v4l2_subdev_call(rkisp1->active_sensor->sd, video, s_stream,
922 false);
923 v4l2_subdev_call(&rkisp1->isp.sd, video, s_stream, false);
924 }
925
926 v4l2_subdev_call(&rkisp1->resizer_devs[cap->id].sd, video, s_stream,
927 false);
928 }
929
930 /*
931 * rkisp1_pipeline_stream_enable - enable nodes in the pipeline
932 *
933 * Enable the DMA Engine and call s_stream(true) through the pipeline.
934 * Should be called after media_pipeline_start()
935 */
rkisp1_pipeline_stream_enable(struct rkisp1_capture * cap)936 static int rkisp1_pipeline_stream_enable(struct rkisp1_capture *cap)
937 __must_hold(&cap->rkisp1->stream_lock)
938 {
939 struct rkisp1_device *rkisp1 = cap->rkisp1;
940 int ret;
941
942 rkisp1_cap_stream_enable(cap);
943
944 ret = v4l2_subdev_call(&rkisp1->resizer_devs[cap->id].sd, video,
945 s_stream, true);
946 if (ret)
947 goto err_disable_cap;
948
949 /*
950 * If the other capture is streaming, isp and sensor nodes are already
951 * enabled, skip them.
952 */
953 if (rkisp1->pipe.streaming_count > 1)
954 return 0;
955
956 ret = v4l2_subdev_call(&rkisp1->isp.sd, video, s_stream, true);
957 if (ret)
958 goto err_disable_rsz;
959
960 ret = v4l2_subdev_call(rkisp1->active_sensor->sd, video, s_stream,
961 true);
962 if (ret)
963 goto err_disable_isp;
964
965 return 0;
966
967 err_disable_isp:
968 v4l2_subdev_call(&rkisp1->isp.sd, video, s_stream, false);
969 err_disable_rsz:
970 v4l2_subdev_call(&rkisp1->resizer_devs[cap->id].sd, video, s_stream,
971 false);
972 err_disable_cap:
973 rkisp1_cap_stream_disable(cap);
974
975 return ret;
976 }
977
rkisp1_vb2_stop_streaming(struct vb2_queue * queue)978 static void rkisp1_vb2_stop_streaming(struct vb2_queue *queue)
979 {
980 struct rkisp1_capture *cap = queue->drv_priv;
981 struct rkisp1_vdev_node *node = &cap->vnode;
982 struct rkisp1_device *rkisp1 = cap->rkisp1;
983 int ret;
984
985 mutex_lock(&cap->rkisp1->stream_lock);
986
987 rkisp1_pipeline_stream_disable(cap);
988
989 rkisp1_return_all_buffers(cap, VB2_BUF_STATE_ERROR);
990
991 v4l2_pipeline_pm_put(&node->vdev.entity);
992 ret = pm_runtime_put(rkisp1->dev);
993 if (ret < 0)
994 dev_err(rkisp1->dev, "power down failed error:%d\n", ret);
995
996 rkisp1_dummy_buf_destroy(cap);
997
998 media_pipeline_stop(&node->vdev.entity);
999
1000 mutex_unlock(&cap->rkisp1->stream_lock);
1001 }
1002
1003 static int
rkisp1_vb2_start_streaming(struct vb2_queue * queue,unsigned int count)1004 rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count)
1005 {
1006 struct rkisp1_capture *cap = queue->drv_priv;
1007 struct media_entity *entity = &cap->vnode.vdev.entity;
1008 int ret;
1009
1010 mutex_lock(&cap->rkisp1->stream_lock);
1011
1012 ret = media_pipeline_start(entity, &cap->rkisp1->pipe);
1013 if (ret) {
1014 dev_err(cap->rkisp1->dev, "start pipeline failed %d\n", ret);
1015 goto err_ret_buffers;
1016 }
1017
1018 ret = rkisp1_dummy_buf_create(cap);
1019 if (ret)
1020 goto err_pipeline_stop;
1021
1022 ret = pm_runtime_resume_and_get(cap->rkisp1->dev);
1023 if (ret < 0) {
1024 dev_err(cap->rkisp1->dev, "power up failed %d\n", ret);
1025 goto err_destroy_dummy;
1026 }
1027 ret = v4l2_pipeline_pm_get(entity);
1028 if (ret) {
1029 dev_err(cap->rkisp1->dev, "open cif pipeline failed %d\n", ret);
1030 goto err_pipe_pm_put;
1031 }
1032
1033 ret = rkisp1_pipeline_stream_enable(cap);
1034 if (ret)
1035 goto err_v4l2_pm_put;
1036
1037 mutex_unlock(&cap->rkisp1->stream_lock);
1038
1039 return 0;
1040
1041 err_v4l2_pm_put:
1042 v4l2_pipeline_pm_put(entity);
1043 err_pipe_pm_put:
1044 pm_runtime_put(cap->rkisp1->dev);
1045 err_destroy_dummy:
1046 rkisp1_dummy_buf_destroy(cap);
1047 err_pipeline_stop:
1048 media_pipeline_stop(entity);
1049 err_ret_buffers:
1050 rkisp1_return_all_buffers(cap, VB2_BUF_STATE_QUEUED);
1051 mutex_unlock(&cap->rkisp1->stream_lock);
1052
1053 return ret;
1054 }
1055
1056 static const struct vb2_ops rkisp1_vb2_ops = {
1057 .queue_setup = rkisp1_vb2_queue_setup,
1058 .buf_init = rkisp1_vb2_buf_init,
1059 .buf_queue = rkisp1_vb2_buf_queue,
1060 .buf_prepare = rkisp1_vb2_buf_prepare,
1061 .wait_prepare = vb2_ops_wait_prepare,
1062 .wait_finish = vb2_ops_wait_finish,
1063 .stop_streaming = rkisp1_vb2_stop_streaming,
1064 .start_streaming = rkisp1_vb2_start_streaming,
1065 };
1066
1067 /* ----------------------------------------------------------------------------
1068 * IOCTLs operations
1069 */
1070
1071 static const struct v4l2_format_info *
rkisp1_fill_pixfmt(struct v4l2_pix_format_mplane * pixm,enum rkisp1_stream_id id)1072 rkisp1_fill_pixfmt(struct v4l2_pix_format_mplane *pixm,
1073 enum rkisp1_stream_id id)
1074 {
1075 struct v4l2_plane_pix_format *plane_y = &pixm->plane_fmt[0];
1076 const struct v4l2_format_info *info;
1077 unsigned int i;
1078 u32 stride;
1079
1080 memset(pixm->plane_fmt, 0, sizeof(pixm->plane_fmt));
1081 info = v4l2_format_info(pixm->pixelformat);
1082 pixm->num_planes = info->mem_planes;
1083 stride = info->bpp[0] * pixm->width;
1084 /* Self path supports custom stride but Main path doesn't */
1085 if (id == RKISP1_MAINPATH || plane_y->bytesperline < stride)
1086 plane_y->bytesperline = stride;
1087 plane_y->sizeimage = plane_y->bytesperline * pixm->height;
1088
1089 /* normalize stride to pixels per line */
1090 stride = DIV_ROUND_UP(plane_y->bytesperline, info->bpp[0]);
1091
1092 for (i = 1; i < info->comp_planes; i++) {
1093 struct v4l2_plane_pix_format *plane = &pixm->plane_fmt[i];
1094
1095 /* bytesperline for other components derive from Y component */
1096 plane->bytesperline = DIV_ROUND_UP(stride, info->hdiv) *
1097 info->bpp[i];
1098 plane->sizeimage = plane->bytesperline *
1099 DIV_ROUND_UP(pixm->height, info->vdiv);
1100 }
1101
1102 /*
1103 * If pixfmt is packed, then plane_fmt[0] should contain the total size
1104 * considering all components. plane_fmt[i] for i > 0 should be ignored
1105 * by userspace as mem_planes == 1, but we are keeping information there
1106 * for convenience.
1107 */
1108 if (info->mem_planes == 1)
1109 for (i = 1; i < info->comp_planes; i++)
1110 plane_y->sizeimage += pixm->plane_fmt[i].sizeimage;
1111
1112 return info;
1113 }
1114
1115 static const struct rkisp1_capture_fmt_cfg *
rkisp1_find_fmt_cfg(const struct rkisp1_capture * cap,const u32 pixelfmt)1116 rkisp1_find_fmt_cfg(const struct rkisp1_capture *cap, const u32 pixelfmt)
1117 {
1118 unsigned int i;
1119
1120 for (i = 0; i < cap->config->fmt_size; i++) {
1121 if (cap->config->fmts[i].fourcc == pixelfmt)
1122 return &cap->config->fmts[i];
1123 }
1124 return NULL;
1125 }
1126
rkisp1_try_fmt(const struct rkisp1_capture * cap,struct v4l2_pix_format_mplane * pixm,const struct rkisp1_capture_fmt_cfg ** fmt_cfg,const struct v4l2_format_info ** fmt_info)1127 static void rkisp1_try_fmt(const struct rkisp1_capture *cap,
1128 struct v4l2_pix_format_mplane *pixm,
1129 const struct rkisp1_capture_fmt_cfg **fmt_cfg,
1130 const struct v4l2_format_info **fmt_info)
1131 {
1132 const struct rkisp1_capture_config *config = cap->config;
1133 const struct rkisp1_capture_fmt_cfg *fmt;
1134 const struct v4l2_format_info *info;
1135 const unsigned int max_widths[] = { RKISP1_RSZ_MP_SRC_MAX_WIDTH,
1136 RKISP1_RSZ_SP_SRC_MAX_WIDTH };
1137 const unsigned int max_heights[] = { RKISP1_RSZ_MP_SRC_MAX_HEIGHT,
1138 RKISP1_RSZ_SP_SRC_MAX_HEIGHT};
1139
1140 fmt = rkisp1_find_fmt_cfg(cap, pixm->pixelformat);
1141 if (!fmt) {
1142 fmt = config->fmts;
1143 pixm->pixelformat = fmt->fourcc;
1144 }
1145
1146 pixm->width = clamp_t(u32, pixm->width,
1147 RKISP1_RSZ_SRC_MIN_WIDTH, max_widths[cap->id]);
1148 pixm->height = clamp_t(u32, pixm->height,
1149 RKISP1_RSZ_SRC_MIN_HEIGHT, max_heights[cap->id]);
1150
1151 pixm->field = V4L2_FIELD_NONE;
1152 pixm->colorspace = V4L2_COLORSPACE_DEFAULT;
1153 pixm->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1154 pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
1155
1156 info = rkisp1_fill_pixfmt(pixm, cap->id);
1157
1158 if (fmt_cfg)
1159 *fmt_cfg = fmt;
1160 if (fmt_info)
1161 *fmt_info = info;
1162 }
1163
rkisp1_set_fmt(struct rkisp1_capture * cap,struct v4l2_pix_format_mplane * pixm)1164 static void rkisp1_set_fmt(struct rkisp1_capture *cap,
1165 struct v4l2_pix_format_mplane *pixm)
1166 {
1167 rkisp1_try_fmt(cap, pixm, &cap->pix.cfg, &cap->pix.info);
1168 cap->pix.fmt = *pixm;
1169
1170 /* SP supports custom stride in number of pixels of the Y plane */
1171 if (cap->id == RKISP1_SELFPATH)
1172 cap->sp_y_stride = pixm->plane_fmt[0].bytesperline /
1173 cap->pix.info->bpp[0];
1174 }
1175
rkisp1_try_fmt_vid_cap_mplane(struct file * file,void * fh,struct v4l2_format * f)1176 static int rkisp1_try_fmt_vid_cap_mplane(struct file *file, void *fh,
1177 struct v4l2_format *f)
1178 {
1179 struct rkisp1_capture *cap = video_drvdata(file);
1180
1181 rkisp1_try_fmt(cap, &f->fmt.pix_mp, NULL, NULL);
1182
1183 return 0;
1184 }
1185
rkisp1_enum_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_fmtdesc * f)1186 static int rkisp1_enum_fmt_vid_cap_mplane(struct file *file, void *priv,
1187 struct v4l2_fmtdesc *f)
1188 {
1189 struct rkisp1_capture *cap = video_drvdata(file);
1190 const struct rkisp1_capture_fmt_cfg *fmt = NULL;
1191 unsigned int i, n = 0;
1192
1193 if (!f->mbus_code) {
1194 if (f->index >= cap->config->fmt_size)
1195 return -EINVAL;
1196
1197 fmt = &cap->config->fmts[f->index];
1198 f->pixelformat = fmt->fourcc;
1199 return 0;
1200 }
1201
1202 for (i = 0; i < cap->config->fmt_size; i++) {
1203 if (cap->config->fmts[i].mbus != f->mbus_code)
1204 continue;
1205
1206 if (n++ == f->index) {
1207 f->pixelformat = cap->config->fmts[i].fourcc;
1208 return 0;
1209 }
1210 }
1211 return -EINVAL;
1212 }
1213
rkisp1_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)1214 static int rkisp1_s_fmt_vid_cap_mplane(struct file *file,
1215 void *priv, struct v4l2_format *f)
1216 {
1217 struct rkisp1_capture *cap = video_drvdata(file);
1218 struct rkisp1_vdev_node *node =
1219 rkisp1_vdev_to_node(&cap->vnode.vdev);
1220
1221 if (vb2_is_busy(&node->buf_queue))
1222 return -EBUSY;
1223
1224 rkisp1_set_fmt(cap, &f->fmt.pix_mp);
1225
1226 return 0;
1227 }
1228
rkisp1_g_fmt_vid_cap_mplane(struct file * file,void * fh,struct v4l2_format * f)1229 static int rkisp1_g_fmt_vid_cap_mplane(struct file *file, void *fh,
1230 struct v4l2_format *f)
1231 {
1232 struct rkisp1_capture *cap = video_drvdata(file);
1233
1234 f->fmt.pix_mp = cap->pix.fmt;
1235
1236 return 0;
1237 }
1238
1239 static int
rkisp1_querycap(struct file * file,void * priv,struct v4l2_capability * cap)1240 rkisp1_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
1241 {
1242 struct rkisp1_capture *cap_dev = video_drvdata(file);
1243 struct rkisp1_device *rkisp1 = cap_dev->rkisp1;
1244
1245 strscpy(cap->driver, rkisp1->dev->driver->name, sizeof(cap->driver));
1246 strscpy(cap->card, rkisp1->dev->driver->name, sizeof(cap->card));
1247 strscpy(cap->bus_info, RKISP1_BUS_INFO, sizeof(cap->bus_info));
1248
1249 return 0;
1250 }
1251
1252 static const struct v4l2_ioctl_ops rkisp1_v4l2_ioctl_ops = {
1253 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1254 .vidioc_querybuf = vb2_ioctl_querybuf,
1255 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1256 .vidioc_qbuf = vb2_ioctl_qbuf,
1257 .vidioc_expbuf = vb2_ioctl_expbuf,
1258 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1259 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1260 .vidioc_streamon = vb2_ioctl_streamon,
1261 .vidioc_streamoff = vb2_ioctl_streamoff,
1262 .vidioc_try_fmt_vid_cap_mplane = rkisp1_try_fmt_vid_cap_mplane,
1263 .vidioc_s_fmt_vid_cap_mplane = rkisp1_s_fmt_vid_cap_mplane,
1264 .vidioc_g_fmt_vid_cap_mplane = rkisp1_g_fmt_vid_cap_mplane,
1265 .vidioc_enum_fmt_vid_cap = rkisp1_enum_fmt_vid_cap_mplane,
1266 .vidioc_querycap = rkisp1_querycap,
1267 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1268 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1269 };
1270
rkisp1_capture_link_validate(struct media_link * link)1271 static int rkisp1_capture_link_validate(struct media_link *link)
1272 {
1273 struct video_device *vdev =
1274 media_entity_to_video_device(link->sink->entity);
1275 struct v4l2_subdev *sd =
1276 media_entity_to_v4l2_subdev(link->source->entity);
1277 struct rkisp1_capture *cap = video_get_drvdata(vdev);
1278 const struct rkisp1_capture_fmt_cfg *fmt =
1279 rkisp1_find_fmt_cfg(cap, cap->pix.fmt.pixelformat);
1280 struct v4l2_subdev_format sd_fmt;
1281 int ret;
1282
1283 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1284 sd_fmt.pad = link->source->index;
1285 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
1286 if (ret)
1287 return ret;
1288
1289 if (sd_fmt.format.height != cap->pix.fmt.height ||
1290 sd_fmt.format.width != cap->pix.fmt.width ||
1291 sd_fmt.format.code != fmt->mbus)
1292 return -EPIPE;
1293
1294 return 0;
1295 }
1296
1297 /* ----------------------------------------------------------------------------
1298 * core functions
1299 */
1300
1301 static const struct media_entity_operations rkisp1_media_ops = {
1302 .link_validate = rkisp1_capture_link_validate,
1303 };
1304
1305 static const struct v4l2_file_operations rkisp1_fops = {
1306 .open = v4l2_fh_open,
1307 .release = vb2_fop_release,
1308 .unlocked_ioctl = video_ioctl2,
1309 .poll = vb2_fop_poll,
1310 .mmap = vb2_fop_mmap,
1311 };
1312
rkisp1_unregister_capture(struct rkisp1_capture * cap)1313 static void rkisp1_unregister_capture(struct rkisp1_capture *cap)
1314 {
1315 media_entity_cleanup(&cap->vnode.vdev.entity);
1316 vb2_video_unregister_device(&cap->vnode.vdev);
1317 }
1318
rkisp1_capture_devs_unregister(struct rkisp1_device * rkisp1)1319 void rkisp1_capture_devs_unregister(struct rkisp1_device *rkisp1)
1320 {
1321 struct rkisp1_capture *mp = &rkisp1->capture_devs[RKISP1_MAINPATH];
1322 struct rkisp1_capture *sp = &rkisp1->capture_devs[RKISP1_SELFPATH];
1323
1324 rkisp1_unregister_capture(mp);
1325 rkisp1_unregister_capture(sp);
1326 }
1327
rkisp1_register_capture(struct rkisp1_capture * cap)1328 static int rkisp1_register_capture(struct rkisp1_capture *cap)
1329 {
1330 const char * const dev_names[] = {RKISP1_MP_DEV_NAME,
1331 RKISP1_SP_DEV_NAME};
1332 struct v4l2_device *v4l2_dev = &cap->rkisp1->v4l2_dev;
1333 struct video_device *vdev = &cap->vnode.vdev;
1334 struct rkisp1_vdev_node *node;
1335 struct vb2_queue *q;
1336 int ret;
1337
1338 strscpy(vdev->name, dev_names[cap->id], sizeof(vdev->name));
1339 node = rkisp1_vdev_to_node(vdev);
1340 mutex_init(&node->vlock);
1341
1342 vdev->ioctl_ops = &rkisp1_v4l2_ioctl_ops;
1343 vdev->release = video_device_release_empty;
1344 vdev->fops = &rkisp1_fops;
1345 vdev->minor = -1;
1346 vdev->v4l2_dev = v4l2_dev;
1347 vdev->lock = &node->vlock;
1348 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1349 V4L2_CAP_STREAMING | V4L2_CAP_IO_MC;
1350 vdev->entity.ops = &rkisp1_media_ops;
1351 video_set_drvdata(vdev, cap);
1352 vdev->vfl_dir = VFL_DIR_RX;
1353 node->pad.flags = MEDIA_PAD_FL_SINK;
1354
1355 q = &node->buf_queue;
1356 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1357 q->io_modes = VB2_MMAP | VB2_DMABUF;
1358 q->drv_priv = cap;
1359 q->ops = &rkisp1_vb2_ops;
1360 q->mem_ops = &vb2_dma_contig_memops;
1361 q->buf_struct_size = sizeof(struct rkisp1_buffer);
1362 q->min_buffers_needed = RKISP1_MIN_BUFFERS_NEEDED;
1363 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1364 q->lock = &node->vlock;
1365 q->dev = cap->rkisp1->dev;
1366 ret = vb2_queue_init(q);
1367 if (ret) {
1368 dev_err(cap->rkisp1->dev,
1369 "vb2 queue init failed (err=%d)\n", ret);
1370 return ret;
1371 }
1372
1373 vdev->queue = q;
1374
1375 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1376 if (ret) {
1377 dev_err(cap->rkisp1->dev,
1378 "failed to register %s, ret=%d\n", vdev->name, ret);
1379 return ret;
1380 }
1381 v4l2_info(v4l2_dev, "registered %s as /dev/video%d\n", vdev->name,
1382 vdev->num);
1383
1384 ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
1385 if (ret) {
1386 video_unregister_device(vdev);
1387 return ret;
1388 }
1389
1390 return 0;
1391 }
1392
1393 static void
rkisp1_capture_init(struct rkisp1_device * rkisp1,enum rkisp1_stream_id id)1394 rkisp1_capture_init(struct rkisp1_device *rkisp1, enum rkisp1_stream_id id)
1395 {
1396 struct rkisp1_capture *cap = &rkisp1->capture_devs[id];
1397 struct v4l2_pix_format_mplane pixm;
1398
1399 memset(cap, 0, sizeof(*cap));
1400 cap->id = id;
1401 cap->rkisp1 = rkisp1;
1402
1403 INIT_LIST_HEAD(&cap->buf.queue);
1404 init_waitqueue_head(&cap->done);
1405 spin_lock_init(&cap->buf.lock);
1406 if (cap->id == RKISP1_SELFPATH) {
1407 cap->ops = &rkisp1_capture_ops_sp;
1408 cap->config = &rkisp1_capture_config_sp;
1409 } else {
1410 cap->ops = &rkisp1_capture_ops_mp;
1411 cap->config = &rkisp1_capture_config_mp;
1412 }
1413
1414 cap->is_streaming = false;
1415
1416 memset(&pixm, 0, sizeof(pixm));
1417 pixm.pixelformat = V4L2_PIX_FMT_YUYV;
1418 pixm.width = RKISP1_DEFAULT_WIDTH;
1419 pixm.height = RKISP1_DEFAULT_HEIGHT;
1420 rkisp1_set_fmt(cap, &pixm);
1421 }
1422
rkisp1_capture_devs_register(struct rkisp1_device * rkisp1)1423 int rkisp1_capture_devs_register(struct rkisp1_device *rkisp1)
1424 {
1425 struct rkisp1_capture *cap;
1426 unsigned int i, j;
1427 int ret;
1428
1429 for (i = 0; i < ARRAY_SIZE(rkisp1->capture_devs); i++) {
1430 rkisp1_capture_init(rkisp1, i);
1431 cap = &rkisp1->capture_devs[i];
1432 cap->rkisp1 = rkisp1;
1433 ret = rkisp1_register_capture(cap);
1434 if (ret)
1435 goto err_unreg_capture_devs;
1436 }
1437
1438 return 0;
1439
1440 err_unreg_capture_devs:
1441 for (j = 0; j < i; j++) {
1442 cap = &rkisp1->capture_devs[j];
1443 rkisp1_unregister_capture(cap);
1444 }
1445
1446 return ret;
1447 }
1448