1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * i.MX Pixel Pipeline (PXP) mem-to-mem scaler/CSC/rotator driver
4 *
5 * Copyright (c) 2018 Pengutronix, Philipp Zabel
6 *
7 * based on vim2m
8 *
9 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
10 * Pawel Osciak, <pawel@osciak.com>
11 * Marek Szyprowski, <m.szyprowski@samsung.com>
12 */
13 #include <linux/clk.h>
14 #include <linux/delay.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/interrupt.h>
17 #include <linux/io.h>
18 #include <linux/iopoll.h>
19 #include <linux/module.h>
20 #include <linux/of.h>
21 #include <linux/sched.h>
22 #include <linux/slab.h>
23
24 #include <linux/platform_device.h>
25 #include <media/v4l2-mem2mem.h>
26 #include <media/v4l2-device.h>
27 #include <media/v4l2-ioctl.h>
28 #include <media/v4l2-ctrls.h>
29 #include <media/v4l2-event.h>
30 #include <media/videobuf2-dma-contig.h>
31
32 #include "imx-pxp.h"
33
34 static unsigned int debug;
35 module_param(debug, uint, 0644);
36 MODULE_PARM_DESC(debug, "activates debug info");
37
38 #define MIN_W 8
39 #define MIN_H 8
40 #define MAX_W 4096
41 #define MAX_H 4096
42 #define ALIGN_W 3 /* 8x8 pixel blocks */
43 #define ALIGN_H 3
44
45 /* Flags that indicate a format can be used for capture/output */
46 #define MEM2MEM_CAPTURE (1 << 0)
47 #define MEM2MEM_OUTPUT (1 << 1)
48
49 #define MEM2MEM_NAME "pxp"
50
51 /* Flags that indicate processing mode */
52 #define MEM2MEM_HFLIP (1 << 0)
53 #define MEM2MEM_VFLIP (1 << 1)
54
55 #define dprintk(dev, fmt, arg...) \
56 v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
57
58 struct pxp_fmt {
59 u32 fourcc;
60 int depth;
61 /* Types the format can be used for */
62 u32 types;
63 };
64
65 static struct pxp_fmt formats[] = {
66 {
67 .fourcc = V4L2_PIX_FMT_XBGR32,
68 .depth = 32,
69 /* Both capture and output format */
70 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
71 }, {
72 .fourcc = V4L2_PIX_FMT_ABGR32,
73 .depth = 32,
74 /* Capture-only format */
75 .types = MEM2MEM_CAPTURE,
76 }, {
77 .fourcc = V4L2_PIX_FMT_BGR24,
78 .depth = 24,
79 .types = MEM2MEM_CAPTURE,
80 }, {
81 .fourcc = V4L2_PIX_FMT_RGB565,
82 .depth = 16,
83 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
84 }, {
85 .fourcc = V4L2_PIX_FMT_RGB555,
86 .depth = 16,
87 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
88 }, {
89 .fourcc = V4L2_PIX_FMT_RGB444,
90 .depth = 16,
91 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
92 }, {
93 .fourcc = V4L2_PIX_FMT_VUYA32,
94 .depth = 32,
95 .types = MEM2MEM_CAPTURE,
96 }, {
97 .fourcc = V4L2_PIX_FMT_VUYX32,
98 .depth = 32,
99 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
100 }, {
101 .fourcc = V4L2_PIX_FMT_UYVY,
102 .depth = 16,
103 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
104 }, {
105 .fourcc = V4L2_PIX_FMT_YUYV,
106 .depth = 16,
107 /* Output-only format */
108 .types = MEM2MEM_OUTPUT,
109 }, {
110 .fourcc = V4L2_PIX_FMT_VYUY,
111 .depth = 16,
112 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
113 }, {
114 .fourcc = V4L2_PIX_FMT_YVYU,
115 .depth = 16,
116 .types = MEM2MEM_OUTPUT,
117 }, {
118 .fourcc = V4L2_PIX_FMT_GREY,
119 .depth = 8,
120 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
121 }, {
122 .fourcc = V4L2_PIX_FMT_Y4,
123 .depth = 4,
124 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
125 }, {
126 .fourcc = V4L2_PIX_FMT_NV16,
127 .depth = 16,
128 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
129 }, {
130 .fourcc = V4L2_PIX_FMT_NV12,
131 .depth = 12,
132 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
133 }, {
134 .fourcc = V4L2_PIX_FMT_NV21,
135 .depth = 12,
136 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
137 }, {
138 .fourcc = V4L2_PIX_FMT_NV61,
139 .depth = 16,
140 .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
141 }, {
142 .fourcc = V4L2_PIX_FMT_YUV422P,
143 .depth = 16,
144 .types = MEM2MEM_OUTPUT,
145 }, {
146 .fourcc = V4L2_PIX_FMT_YUV420,
147 .depth = 12,
148 .types = MEM2MEM_OUTPUT,
149 },
150 };
151
152 #define NUM_FORMATS ARRAY_SIZE(formats)
153
154 /* Per-queue, driver-specific private data */
155 struct pxp_q_data {
156 unsigned int width;
157 unsigned int height;
158 unsigned int bytesperline;
159 unsigned int sizeimage;
160 unsigned int sequence;
161 struct pxp_fmt *fmt;
162 enum v4l2_ycbcr_encoding ycbcr_enc;
163 enum v4l2_quantization quant;
164 };
165
166 enum {
167 V4L2_M2M_SRC = 0,
168 V4L2_M2M_DST = 1,
169 };
170
find_format(struct v4l2_format * f)171 static struct pxp_fmt *find_format(struct v4l2_format *f)
172 {
173 struct pxp_fmt *fmt;
174 unsigned int k;
175
176 for (k = 0; k < NUM_FORMATS; k++) {
177 fmt = &formats[k];
178 if (fmt->fourcc == f->fmt.pix.pixelformat)
179 break;
180 }
181
182 if (k == NUM_FORMATS)
183 return NULL;
184
185 return &formats[k];
186 }
187
188 struct pxp_dev {
189 struct v4l2_device v4l2_dev;
190 struct video_device vfd;
191
192 struct clk *clk;
193 void __iomem *mmio;
194
195 atomic_t num_inst;
196 struct mutex dev_mutex;
197 spinlock_t irqlock;
198
199 struct v4l2_m2m_dev *m2m_dev;
200 };
201
202 struct pxp_ctx {
203 struct v4l2_fh fh;
204 struct pxp_dev *dev;
205
206 struct v4l2_ctrl_handler hdl;
207
208 /* Abort requested by m2m */
209 int aborting;
210
211 /* Processing mode */
212 int mode;
213 u8 alpha_component;
214
215 enum v4l2_colorspace colorspace;
216 enum v4l2_xfer_func xfer_func;
217
218 /* Source and destination queue data */
219 struct pxp_q_data q_data[2];
220 };
221
file2ctx(struct file * file)222 static inline struct pxp_ctx *file2ctx(struct file *file)
223 {
224 return container_of(file->private_data, struct pxp_ctx, fh);
225 }
226
get_q_data(struct pxp_ctx * ctx,enum v4l2_buf_type type)227 static struct pxp_q_data *get_q_data(struct pxp_ctx *ctx,
228 enum v4l2_buf_type type)
229 {
230 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
231 return &ctx->q_data[V4L2_M2M_SRC];
232 else
233 return &ctx->q_data[V4L2_M2M_DST];
234 }
235
pxp_v4l2_pix_fmt_to_ps_format(u32 v4l2_pix_fmt)236 static u32 pxp_v4l2_pix_fmt_to_ps_format(u32 v4l2_pix_fmt)
237 {
238 switch (v4l2_pix_fmt) {
239 case V4L2_PIX_FMT_XBGR32: return BV_PXP_PS_CTRL_FORMAT__RGB888;
240 case V4L2_PIX_FMT_RGB555: return BV_PXP_PS_CTRL_FORMAT__RGB555;
241 case V4L2_PIX_FMT_RGB444: return BV_PXP_PS_CTRL_FORMAT__RGB444;
242 case V4L2_PIX_FMT_RGB565: return BV_PXP_PS_CTRL_FORMAT__RGB565;
243 case V4L2_PIX_FMT_VUYX32: return BV_PXP_PS_CTRL_FORMAT__YUV1P444;
244 case V4L2_PIX_FMT_UYVY: return BV_PXP_PS_CTRL_FORMAT__UYVY1P422;
245 case V4L2_PIX_FMT_YUYV: return BM_PXP_PS_CTRL_WB_SWAP |
246 BV_PXP_PS_CTRL_FORMAT__UYVY1P422;
247 case V4L2_PIX_FMT_VYUY: return BV_PXP_PS_CTRL_FORMAT__VYUY1P422;
248 case V4L2_PIX_FMT_YVYU: return BM_PXP_PS_CTRL_WB_SWAP |
249 BV_PXP_PS_CTRL_FORMAT__VYUY1P422;
250 case V4L2_PIX_FMT_GREY: return BV_PXP_PS_CTRL_FORMAT__Y8;
251 default:
252 case V4L2_PIX_FMT_Y4: return BV_PXP_PS_CTRL_FORMAT__Y4;
253 case V4L2_PIX_FMT_NV16: return BV_PXP_PS_CTRL_FORMAT__YUV2P422;
254 case V4L2_PIX_FMT_NV12: return BV_PXP_PS_CTRL_FORMAT__YUV2P420;
255 case V4L2_PIX_FMT_NV21: return BV_PXP_PS_CTRL_FORMAT__YVU2P420;
256 case V4L2_PIX_FMT_NV61: return BV_PXP_PS_CTRL_FORMAT__YVU2P422;
257 case V4L2_PIX_FMT_YUV422P: return BV_PXP_PS_CTRL_FORMAT__YUV422;
258 case V4L2_PIX_FMT_YUV420: return BV_PXP_PS_CTRL_FORMAT__YUV420;
259 }
260 }
261
pxp_v4l2_pix_fmt_to_out_format(u32 v4l2_pix_fmt)262 static u32 pxp_v4l2_pix_fmt_to_out_format(u32 v4l2_pix_fmt)
263 {
264 switch (v4l2_pix_fmt) {
265 case V4L2_PIX_FMT_XBGR32: return BV_PXP_OUT_CTRL_FORMAT__RGB888;
266 case V4L2_PIX_FMT_ABGR32: return BV_PXP_OUT_CTRL_FORMAT__ARGB8888;
267 case V4L2_PIX_FMT_BGR24: return BV_PXP_OUT_CTRL_FORMAT__RGB888P;
268 /* Missing V4L2 pixel formats for ARGB1555 and ARGB4444 */
269 case V4L2_PIX_FMT_RGB555: return BV_PXP_OUT_CTRL_FORMAT__RGB555;
270 case V4L2_PIX_FMT_RGB444: return BV_PXP_OUT_CTRL_FORMAT__RGB444;
271 case V4L2_PIX_FMT_RGB565: return BV_PXP_OUT_CTRL_FORMAT__RGB565;
272 case V4L2_PIX_FMT_VUYA32:
273 case V4L2_PIX_FMT_VUYX32: return BV_PXP_OUT_CTRL_FORMAT__YUV1P444;
274 case V4L2_PIX_FMT_UYVY: return BV_PXP_OUT_CTRL_FORMAT__UYVY1P422;
275 case V4L2_PIX_FMT_VYUY: return BV_PXP_OUT_CTRL_FORMAT__VYUY1P422;
276 case V4L2_PIX_FMT_GREY: return BV_PXP_OUT_CTRL_FORMAT__Y8;
277 default:
278 case V4L2_PIX_FMT_Y4: return BV_PXP_OUT_CTRL_FORMAT__Y4;
279 case V4L2_PIX_FMT_NV16: return BV_PXP_OUT_CTRL_FORMAT__YUV2P422;
280 case V4L2_PIX_FMT_NV12: return BV_PXP_OUT_CTRL_FORMAT__YUV2P420;
281 case V4L2_PIX_FMT_NV61: return BV_PXP_OUT_CTRL_FORMAT__YVU2P422;
282 case V4L2_PIX_FMT_NV21: return BV_PXP_OUT_CTRL_FORMAT__YVU2P420;
283 }
284 }
285
pxp_v4l2_pix_fmt_is_yuv(u32 v4l2_pix_fmt)286 static bool pxp_v4l2_pix_fmt_is_yuv(u32 v4l2_pix_fmt)
287 {
288 switch (v4l2_pix_fmt) {
289 case V4L2_PIX_FMT_VUYA32:
290 case V4L2_PIX_FMT_VUYX32:
291 case V4L2_PIX_FMT_UYVY:
292 case V4L2_PIX_FMT_YUYV:
293 case V4L2_PIX_FMT_VYUY:
294 case V4L2_PIX_FMT_YVYU:
295 case V4L2_PIX_FMT_NV16:
296 case V4L2_PIX_FMT_NV12:
297 case V4L2_PIX_FMT_NV61:
298 case V4L2_PIX_FMT_NV21:
299 case V4L2_PIX_FMT_YUV420:
300 case V4L2_PIX_FMT_YUV422P:
301 case V4L2_PIX_FMT_GREY:
302 case V4L2_PIX_FMT_Y4:
303 return true;
304 default:
305 return false;
306 }
307 }
308
pxp_setup_csc(struct pxp_ctx * ctx)309 static void pxp_setup_csc(struct pxp_ctx *ctx)
310 {
311 struct pxp_dev *dev = ctx->dev;
312 enum v4l2_ycbcr_encoding ycbcr_enc;
313 enum v4l2_quantization quantization;
314
315 if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) &&
316 !pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) {
317 /*
318 * CSC1 YUV/YCbCr to RGB conversion is implemented as follows:
319 *
320 * |R| |C0 0 C1| |Y + Yoffset |
321 * |G| = |C0 C3 C2| * |Cb + UVoffset|
322 * |B| |C0 C4 0 | |Cr + UVoffset|
323 *
324 * Results are clamped to 0..255.
325 *
326 * BT.601 limited range:
327 *
328 * |R| |1.1644 0.0000 1.5960| |Y - 16 |
329 * |G| = |1.1644 -0.3917 -0.8129| * |Cb - 128|
330 * |B| |1.1644 2.0172 0.0000| |Cr - 128|
331 */
332 static const u32 csc1_coef_bt601_lim[3] = {
333 BM_PXP_CSC1_COEF0_YCBCR_MODE |
334 BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */
335 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
336 BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
337 BF_PXP_CSC1_COEF1_C1(0x198) | /* 1.5938 (-0.23 %) */
338 BF_PXP_CSC1_COEF1_C4(0x204), /* 2.0156 (-0.16 %) */
339 BF_PXP_CSC1_COEF2_C2(0x730) | /* -0.8125 (+0.04 %) */
340 BF_PXP_CSC1_COEF2_C3(0x79c), /* -0.3906 (+0.11 %) */
341 };
342 /*
343 * BT.601 full range:
344 *
345 * |R| |1.0000 0.0000 1.4020| |Y + 0 |
346 * |G| = |1.0000 -0.3441 -0.7141| * |Cb - 128|
347 * |B| |1.0000 1.7720 0.0000| |Cr - 128|
348 */
349 static const u32 csc1_coef_bt601_full[3] = {
350 BM_PXP_CSC1_COEF0_YCBCR_MODE |
351 BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */
352 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
353 BF_PXP_CSC1_COEF0_Y_OFFSET(0),
354 BF_PXP_CSC1_COEF1_C1(0x166) | /* 1.3984 (-0.36 %) */
355 BF_PXP_CSC1_COEF1_C4(0x1c5), /* 1.7695 (-0.25 %) */
356 BF_PXP_CSC1_COEF2_C2(0x74a) | /* -0.7109 (+0.32 %) */
357 BF_PXP_CSC1_COEF2_C3(0x7a8), /* -0.3438 (+0.04 %) */
358 };
359 /*
360 * Rec.709 limited range:
361 *
362 * |R| |1.1644 0.0000 1.7927| |Y - 16 |
363 * |G| = |1.1644 -0.2132 -0.5329| * |Cb - 128|
364 * |B| |1.1644 2.1124 0.0000| |Cr - 128|
365 */
366 static const u32 csc1_coef_rec709_lim[3] = {
367 BM_PXP_CSC1_COEF0_YCBCR_MODE |
368 BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */
369 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
370 BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
371 BF_PXP_CSC1_COEF1_C1(0x1ca) | /* 1.7891 (-0.37 %) */
372 BF_PXP_CSC1_COEF1_C4(0x21c), /* 2.1094 (-0.30 %) */
373 BF_PXP_CSC1_COEF2_C2(0x778) | /* -0.5312 (+0.16 %) */
374 BF_PXP_CSC1_COEF2_C3(0x7ca), /* -0.2109 (+0.23 %) */
375 };
376 /*
377 * Rec.709 full range:
378 *
379 * |R| |1.0000 0.0000 1.5748| |Y + 0 |
380 * |G| = |1.0000 -0.1873 -0.4681| * |Cb - 128|
381 * |B| |1.0000 1.8556 0.0000| |Cr - 128|
382 */
383 static const u32 csc1_coef_rec709_full[3] = {
384 BM_PXP_CSC1_COEF0_YCBCR_MODE |
385 BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */
386 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
387 BF_PXP_CSC1_COEF0_Y_OFFSET(0),
388 BF_PXP_CSC1_COEF1_C1(0x193) | /* 1.5742 (-0.06 %) */
389 BF_PXP_CSC1_COEF1_C4(0x1db), /* 1.8555 (-0.01 %) */
390 BF_PXP_CSC1_COEF2_C2(0x789) | /* -0.4648 (+0.33 %) */
391 BF_PXP_CSC1_COEF2_C3(0x7d1), /* -0.1836 (+0.37 %) */
392 };
393 /*
394 * BT.2020 limited range:
395 *
396 * |R| |1.1644 0.0000 1.6787| |Y - 16 |
397 * |G| = |1.1644 -0.1874 -0.6505| * |Cb - 128|
398 * |B| |1.1644 2.1418 0.0000| |Cr - 128|
399 */
400 static const u32 csc1_coef_bt2020_lim[3] = {
401 BM_PXP_CSC1_COEF0_YCBCR_MODE |
402 BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */
403 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
404 BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
405 BF_PXP_CSC1_COEF1_C1(0x1ad) | /* 1.6758 (-0.29 %) */
406 BF_PXP_CSC1_COEF1_C4(0x224), /* 2.1406 (-0.11 %) */
407 BF_PXP_CSC1_COEF2_C2(0x75a) | /* -0.6484 (+0.20 %) */
408 BF_PXP_CSC1_COEF2_C3(0x7d1), /* -0.1836 (+0.38 %) */
409 };
410 /*
411 * BT.2020 full range:
412 *
413 * |R| |1.0000 0.0000 1.4746| |Y + 0 |
414 * |G| = |1.0000 -0.1646 -0.5714| * |Cb - 128|
415 * |B| |1.0000 1.8814 0.0000| |Cr - 128|
416 */
417 static const u32 csc1_coef_bt2020_full[3] = {
418 BM_PXP_CSC1_COEF0_YCBCR_MODE |
419 BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */
420 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
421 BF_PXP_CSC1_COEF0_Y_OFFSET(0),
422 BF_PXP_CSC1_COEF1_C1(0x179) | /* 1.4727 (-0.19 %) */
423 BF_PXP_CSC1_COEF1_C4(0x1e1), /* 1.8789 (-0.25 %) */
424 BF_PXP_CSC1_COEF2_C2(0x76e) | /* -0.5703 (+0.11 %) */
425 BF_PXP_CSC1_COEF2_C3(0x7d6), /* -0.1641 (+0.05 %) */
426 };
427 /*
428 * SMPTE 240m limited range:
429 *
430 * |R| |1.1644 0.0000 1.7937| |Y - 16 |
431 * |G| = |1.1644 -0.2565 -0.5427| * |Cb - 128|
432 * |B| |1.1644 2.0798 0.0000| |Cr - 128|
433 */
434 static const u32 csc1_coef_smpte240m_lim[3] = {
435 BM_PXP_CSC1_COEF0_YCBCR_MODE |
436 BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */
437 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
438 BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
439 BF_PXP_CSC1_COEF1_C1(0x1cb) | /* 1.7930 (-0.07 %) */
440 BF_PXP_CSC1_COEF1_C4(0x214), /* 2.0781 (-0.17 %) */
441 BF_PXP_CSC1_COEF2_C2(0x776) | /* -0.5391 (+0.36 %) */
442 BF_PXP_CSC1_COEF2_C3(0x7bf), /* -0.2539 (+0.26 %) */
443 };
444 /*
445 * SMPTE 240m full range:
446 *
447 * |R| |1.0000 0.0000 1.5756| |Y + 0 |
448 * |G| = |1.0000 -0.2253 -0.4767| * |Cb - 128|
449 * |B| |1.0000 1.8270 0.0000| |Cr - 128|
450 */
451 static const u32 csc1_coef_smpte240m_full[3] = {
452 BM_PXP_CSC1_COEF0_YCBCR_MODE |
453 BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */
454 BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
455 BF_PXP_CSC1_COEF0_Y_OFFSET(0),
456 BF_PXP_CSC1_COEF1_C1(0x193) | /* 1.5742 (-0.14 %) */
457 BF_PXP_CSC1_COEF1_C4(0x1d3), /* 1.8242 (-0.28 %) */
458 BF_PXP_CSC1_COEF2_C2(0x786) | /* -0.4766 (+0.01 %) */
459 BF_PXP_CSC1_COEF2_C3(0x7c7), /* -0.2227 (+0.26 %) */
460 };
461 const u32 *csc1_coef;
462
463 ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc;
464 quantization = ctx->q_data[V4L2_M2M_SRC].quant;
465
466 if (ycbcr_enc == V4L2_YCBCR_ENC_601) {
467 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
468 csc1_coef = csc1_coef_bt601_full;
469 else
470 csc1_coef = csc1_coef_bt601_lim;
471 } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) {
472 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
473 csc1_coef = csc1_coef_rec709_full;
474 else
475 csc1_coef = csc1_coef_rec709_lim;
476 } else if (ycbcr_enc == V4L2_YCBCR_ENC_BT2020) {
477 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
478 csc1_coef = csc1_coef_bt2020_full;
479 else
480 csc1_coef = csc1_coef_bt2020_lim;
481 } else {
482 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
483 csc1_coef = csc1_coef_smpte240m_full;
484 else
485 csc1_coef = csc1_coef_smpte240m_lim;
486 }
487
488 writel(csc1_coef[0], dev->mmio + HW_PXP_CSC1_COEF0);
489 writel(csc1_coef[1], dev->mmio + HW_PXP_CSC1_COEF1);
490 writel(csc1_coef[2], dev->mmio + HW_PXP_CSC1_COEF2);
491 } else {
492 writel(BM_PXP_CSC1_COEF0_BYPASS, dev->mmio + HW_PXP_CSC1_COEF0);
493 }
494
495 if (!pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) &&
496 pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) {
497 /*
498 * CSC2 RGB to YUV/YCbCr conversion is implemented as follows:
499 *
500 * |Y | |A1 A2 A3| |R| |D1|
501 * |Cb| = |B1 B2 B3| * |G| + |D2|
502 * |Cr| |C1 C2 C3| |B| |D3|
503 *
504 * Results are clamped to 0..255.
505 *
506 * BT.601 limited range:
507 *
508 * |Y | | 0.2568 0.5041 0.0979| |R| |16 |
509 * |Cb| = |-0.1482 -0.2910 0.4392| * |G| + |128|
510 * |Cr| | 0.4392 0.4392 -0.3678| |B| |128|
511 */
512 static const u32 csc2_coef_bt601_lim[6] = {
513 BF_PXP_CSC2_COEF0_A2(0x081) | /* 0.5039 (-0.02 %) */
514 BF_PXP_CSC2_COEF0_A1(0x041), /* 0.2539 (-0.29 %) */
515 BF_PXP_CSC2_COEF1_B1(0x7db) | /* -0.1445 (+0.37 %) */
516 BF_PXP_CSC2_COEF1_A3(0x019), /* 0.0977 (-0.02 %) */
517 BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */
518 BF_PXP_CSC2_COEF2_B2(0x7b6), /* -0.2891 (+0.20 %) */
519 BF_PXP_CSC2_COEF3_C2(0x7a2) | /* -0.3672 (+0.06 %) */
520 BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */
521 BF_PXP_CSC2_COEF4_D1(16) |
522 BF_PXP_CSC2_COEF4_C3(0x7ee), /* -0.0703 (+0.11 %) */
523 BF_PXP_CSC2_COEF5_D3(128) |
524 BF_PXP_CSC2_COEF5_D2(128),
525 };
526 /*
527 * BT.601 full range:
528 *
529 * |Y | | 0.2990 0.5870 0.1140| |R| |0 |
530 * |Cb| = |-0.1687 -0.3313 0.5000| * |G| + |128|
531 * |Cr| | 0.5000 0.5000 -0.4187| |B| |128|
532 */
533 static const u32 csc2_coef_bt601_full[6] = {
534 BF_PXP_CSC2_COEF0_A2(0x096) | /* 0.5859 (-0.11 %) */
535 BF_PXP_CSC2_COEF0_A1(0x04c), /* 0.2969 (-0.21 %) */
536 BF_PXP_CSC2_COEF1_B1(0x7d5) | /* -0.1680 (+0.07 %) */
537 BF_PXP_CSC2_COEF1_A3(0x01d), /* 0.1133 (-0.07 %) */
538 BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */
539 BF_PXP_CSC2_COEF2_B2(0x7ac), /* -0.3281 (+0.32 %) */
540 BF_PXP_CSC2_COEF3_C2(0x795) | /* -0.4180 (+0.07 %) */
541 BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */
542 BF_PXP_CSC2_COEF4_D1(0) |
543 BF_PXP_CSC2_COEF4_C3(0x7ec), /* -0.0781 (+0.32 %) */
544 BF_PXP_CSC2_COEF5_D3(128) |
545 BF_PXP_CSC2_COEF5_D2(128),
546 };
547 /*
548 * Rec.709 limited range:
549 *
550 * |Y | | 0.1826 0.6142 0.0620| |R| |16 |
551 * |Cb| = |-0.1007 -0.3385 0.4392| * |G| + |128|
552 * |Cr| | 0.4392 0.4392 -0.3990| |B| |128|
553 */
554 static const u32 csc2_coef_rec709_lim[6] = {
555 BF_PXP_CSC2_COEF0_A2(0x09d) | /* 0.6133 (-0.09 %) */
556 BF_PXP_CSC2_COEF0_A1(0x02e), /* 0.1797 (-0.29 %) */
557 BF_PXP_CSC2_COEF1_B1(0x7e7) | /* -0.0977 (+0.30 %) */
558 BF_PXP_CSC2_COEF1_A3(0x00f), /* 0.0586 (-0.34 %) */
559 BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */
560 BF_PXP_CSC2_COEF2_B2(0x7aa), /* -0.3359 (+0.26 %) */
561 BF_PXP_CSC2_COEF3_C2(0x79a) | /* -0.3984 (+0.05 %) */
562 BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */
563 BF_PXP_CSC2_COEF4_D1(16) |
564 BF_PXP_CSC2_COEF4_C3(0x7f6), /* -0.0391 (+0.12 %) */
565 BF_PXP_CSC2_COEF5_D3(128) |
566 BF_PXP_CSC2_COEF5_D2(128),
567 };
568 /*
569 * Rec.709 full range:
570 *
571 * |Y | | 0.2126 0.7152 0.0722| |R| |0 |
572 * |Cb| = |-0.1146 -0.3854 0.5000| * |G| + |128|
573 * |Cr| | 0.5000 0.5000 -0.4542| |B| |128|
574 */
575 static const u32 csc2_coef_rec709_full[6] = {
576 BF_PXP_CSC2_COEF0_A2(0x0b7) | /* 0.7148 (-0.04 %) */
577 BF_PXP_CSC2_COEF0_A1(0x036), /* 0.2109 (-0.17 %) */
578 BF_PXP_CSC2_COEF1_B1(0x7e3) | /* -0.1133 (+0.13 %) */
579 BF_PXP_CSC2_COEF1_A3(0x012), /* 0.0703 (-0.19 %) */
580 BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */
581 BF_PXP_CSC2_COEF2_B2(0x79e), /* -0.3828 (+0.26 %) */
582 BF_PXP_CSC2_COEF3_C2(0x78c) | /* -0.4531 (+0.11 %) */
583 BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */
584 BF_PXP_CSC2_COEF4_D1(0) |
585 BF_PXP_CSC2_COEF4_C3(0x7f5), /* -0.0430 (+0.28 %) */
586 BF_PXP_CSC2_COEF5_D3(128) |
587 BF_PXP_CSC2_COEF5_D2(128),
588 };
589 /*
590 * BT.2020 limited range:
591 *
592 * |Y | | 0.2256 0.5823 0.0509| |R| |16 |
593 * |Cb| = |-0.1226 -0.3166 0.4392| * |G| + |128|
594 * |Cr| | 0.4392 0.4392 -0.4039| |B| |128|
595 */
596 static const u32 csc2_coef_bt2020_lim[6] = {
597 BF_PXP_CSC2_COEF0_A2(0x095) | /* 0.5820 (-0.03 %) */
598 BF_PXP_CSC2_COEF0_A1(0x039), /* 0.2227 (-0.30 %) */
599 BF_PXP_CSC2_COEF1_B1(0x7e1) | /* -0.1211 (+0.15 %) */
600 BF_PXP_CSC2_COEF1_A3(0x00d), /* 0.0508 (-0.01 %) */
601 BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */
602 BF_PXP_CSC2_COEF2_B2(0x7af), /* -0.3164 (+0.02 %) */
603 BF_PXP_CSC2_COEF3_C2(0x799) | /* -0.4023 (+0.16 %) */
604 BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */
605 BF_PXP_CSC2_COEF4_D1(16) |
606 BF_PXP_CSC2_COEF4_C3(0x7f7), /* -0.0352 (+0.02 %) */
607 BF_PXP_CSC2_COEF5_D3(128) |
608 BF_PXP_CSC2_COEF5_D2(128),
609 };
610 /*
611 * BT.2020 full range:
612 *
613 * |Y | | 0.2627 0.6780 0.0593| |R| |0 |
614 * |Cb| = |-0.1396 -0.3604 0.5000| * |G| + |128|
615 * |Cr| | 0.5000 0.5000 -0.4598| |B| |128|
616 */
617 static const u32 csc2_coef_bt2020_full[6] = {
618 BF_PXP_CSC2_COEF0_A2(0x0ad) | /* 0.6758 (-0.22 %) */
619 BF_PXP_CSC2_COEF0_A1(0x043), /* 0.2617 (-0.10 %) */
620 BF_PXP_CSC2_COEF1_B1(0x7dd) | /* -0.1367 (+0.29 %) */
621 BF_PXP_CSC2_COEF1_A3(0x00f), /* 0.0586 (-0.07 %) */
622 BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */
623 BF_PXP_CSC2_COEF2_B2(0x7a4), /* -0.3594 (+0.10 %) */
624 BF_PXP_CSC2_COEF3_C2(0x78b) | /* -0.4570 (+0.28 %) */
625 BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */
626 BF_PXP_CSC2_COEF4_D1(0) |
627 BF_PXP_CSC2_COEF4_C3(0x7f6), /* -0.0391 (+0.11 %) */
628 BF_PXP_CSC2_COEF5_D3(128) |
629 BF_PXP_CSC2_COEF5_D2(128),
630 };
631 /*
632 * SMPTE 240m limited range:
633 *
634 * |Y | | 0.1821 0.6020 0.0747| |R| |16 |
635 * |Cb| = |-0.1019 -0.3373 0.4392| * |G| + |128|
636 * |Cr| | 0.4392 0.4392 -0.3909| |B| |128|
637 */
638 static const u32 csc2_coef_smpte240m_lim[6] = {
639 BF_PXP_CSC2_COEF0_A2(0x09a) | /* 0.6016 (-0.05 %) */
640 BF_PXP_CSC2_COEF0_A1(0x02e), /* 0.1797 (-0.24 %) */
641 BF_PXP_CSC2_COEF1_B1(0x7e6) | /* -0.1016 (+0.03 %) */
642 BF_PXP_CSC2_COEF1_A3(0x013), /* 0.0742 (-0.05 %) */
643 BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */
644 BF_PXP_CSC2_COEF2_B2(0x7aa), /* -0.3359 (+0.14 %) */
645 BF_PXP_CSC2_COEF3_C2(0x79c) | /* -0.3906 (+0.03 %) */
646 BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */
647 BF_PXP_CSC2_COEF4_D1(16) |
648 BF_PXP_CSC2_COEF4_C3(0x7f4), /* -0.0469 (+0.14 %) */
649 BF_PXP_CSC2_COEF5_D3(128) |
650 BF_PXP_CSC2_COEF5_D2(128),
651 };
652 /*
653 * SMPTE 240m full range:
654 *
655 * |Y | | 0.2120 0.7010 0.0870| |R| |0 |
656 * |Cb| = |-0.1160 -0.3840 0.5000| * |G| + |128|
657 * |Cr| | 0.5000 0.5000 -0.4450| |B| |128|
658 */
659 static const u32 csc2_coef_smpte240m_full[6] = {
660 BF_PXP_CSC2_COEF0_A2(0x0b3) | /* 0.6992 (-0.18 %) */
661 BF_PXP_CSC2_COEF0_A1(0x036), /* 0.2109 (-0.11 %) */
662 BF_PXP_CSC2_COEF1_B1(0x7e3) | /* -0.1133 (+0.27 %) */
663 BF_PXP_CSC2_COEF1_A3(0x016), /* 0.0859 (-0.11 %) */
664 BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */
665 BF_PXP_CSC2_COEF2_B2(0x79e), /* -0.3828 (+0.12 %) */
666 BF_PXP_CSC2_COEF3_C2(0x78f) | /* -0.4414 (+0.36 %) */
667 BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */
668 BF_PXP_CSC2_COEF4_D1(0) |
669 BF_PXP_CSC2_COEF4_C3(0x7f2), /* -0.0547 (+0.03 %) */
670 BF_PXP_CSC2_COEF5_D3(128) |
671 BF_PXP_CSC2_COEF5_D2(128),
672 };
673 const u32 *csc2_coef;
674 u32 csc2_ctrl;
675
676 ycbcr_enc = ctx->q_data[V4L2_M2M_DST].ycbcr_enc;
677 quantization = ctx->q_data[V4L2_M2M_DST].quant;
678
679 if (ycbcr_enc == V4L2_YCBCR_ENC_601) {
680 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
681 csc2_coef = csc2_coef_bt601_full;
682 else
683 csc2_coef = csc2_coef_bt601_lim;
684 } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) {
685 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
686 csc2_coef = csc2_coef_rec709_full;
687 else
688 csc2_coef = csc2_coef_rec709_lim;
689 } else if (ycbcr_enc == V4L2_YCBCR_ENC_BT2020) {
690 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
691 csc2_coef = csc2_coef_bt2020_full;
692 else
693 csc2_coef = csc2_coef_bt2020_lim;
694 } else {
695 if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
696 csc2_coef = csc2_coef_smpte240m_full;
697 else
698 csc2_coef = csc2_coef_smpte240m_lim;
699 }
700 if (quantization == V4L2_QUANTIZATION_FULL_RANGE) {
701 csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YUV <<
702 BP_PXP_CSC2_CTRL_CSC_MODE;
703 } else {
704 csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YCbCr <<
705 BP_PXP_CSC2_CTRL_CSC_MODE;
706 }
707
708 writel(csc2_ctrl, dev->mmio + HW_PXP_CSC2_CTRL);
709 writel(csc2_coef[0], dev->mmio + HW_PXP_CSC2_COEF0);
710 writel(csc2_coef[1], dev->mmio + HW_PXP_CSC2_COEF1);
711 writel(csc2_coef[2], dev->mmio + HW_PXP_CSC2_COEF2);
712 writel(csc2_coef[3], dev->mmio + HW_PXP_CSC2_COEF3);
713 writel(csc2_coef[4], dev->mmio + HW_PXP_CSC2_COEF4);
714 writel(csc2_coef[5], dev->mmio + HW_PXP_CSC2_COEF5);
715 } else {
716 writel(BM_PXP_CSC2_CTRL_BYPASS, dev->mmio + HW_PXP_CSC2_CTRL);
717 }
718 }
719
pxp_start(struct pxp_ctx * ctx,struct vb2_v4l2_buffer * in_vb,struct vb2_v4l2_buffer * out_vb)720 static int pxp_start(struct pxp_ctx *ctx, struct vb2_v4l2_buffer *in_vb,
721 struct vb2_v4l2_buffer *out_vb)
722 {
723 struct pxp_dev *dev = ctx->dev;
724 struct pxp_q_data *q_data;
725 u32 src_width, src_height, src_stride, src_fourcc;
726 u32 dst_width, dst_height, dst_stride, dst_fourcc;
727 dma_addr_t p_in, p_out;
728 u32 ctrl, out_ctrl, out_buf, out_buf2, out_pitch, out_lrc, out_ps_ulc;
729 u32 out_ps_lrc;
730 u32 ps_ctrl, ps_buf, ps_ubuf, ps_vbuf, ps_pitch, ps_scale, ps_offset;
731 u32 as_ulc, as_lrc;
732 u32 y_size;
733 u32 decx, decy, xscale, yscale;
734
735 q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
736
737 src_width = ctx->q_data[V4L2_M2M_SRC].width;
738 dst_width = ctx->q_data[V4L2_M2M_DST].width;
739 src_height = ctx->q_data[V4L2_M2M_SRC].height;
740 dst_height = ctx->q_data[V4L2_M2M_DST].height;
741 src_stride = ctx->q_data[V4L2_M2M_SRC].bytesperline;
742 dst_stride = ctx->q_data[V4L2_M2M_DST].bytesperline;
743 src_fourcc = ctx->q_data[V4L2_M2M_SRC].fmt->fourcc;
744 dst_fourcc = ctx->q_data[V4L2_M2M_DST].fmt->fourcc;
745
746 p_in = vb2_dma_contig_plane_dma_addr(&in_vb->vb2_buf, 0);
747 p_out = vb2_dma_contig_plane_dma_addr(&out_vb->vb2_buf, 0);
748
749 if (!p_in || !p_out) {
750 v4l2_err(&dev->v4l2_dev,
751 "Acquiring DMA addresses of buffers failed\n");
752 return -EFAULT;
753 }
754
755 out_vb->sequence =
756 get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)->sequence++;
757 in_vb->sequence = q_data->sequence++;
758 out_vb->vb2_buf.timestamp = in_vb->vb2_buf.timestamp;
759
760 if (in_vb->flags & V4L2_BUF_FLAG_TIMECODE)
761 out_vb->timecode = in_vb->timecode;
762 out_vb->field = in_vb->field;
763 out_vb->flags = in_vb->flags &
764 (V4L2_BUF_FLAG_TIMECODE |
765 V4L2_BUF_FLAG_KEYFRAME |
766 V4L2_BUF_FLAG_PFRAME |
767 V4L2_BUF_FLAG_BFRAME |
768 V4L2_BUF_FLAG_TSTAMP_SRC_MASK);
769
770 /* Rotation disabled, 8x8 block size */
771 ctrl = BF_PXP_CTRL_VFLIP0(!!(ctx->mode & MEM2MEM_VFLIP)) |
772 BF_PXP_CTRL_HFLIP0(!!(ctx->mode & MEM2MEM_HFLIP));
773 /* Always write alpha value as V4L2_CID_ALPHA_COMPONENT */
774 out_ctrl = BF_PXP_OUT_CTRL_ALPHA(ctx->alpha_component) |
775 BF_PXP_OUT_CTRL_ALPHA_OUTPUT(1) |
776 pxp_v4l2_pix_fmt_to_out_format(dst_fourcc);
777 out_buf = p_out;
778 switch (dst_fourcc) {
779 case V4L2_PIX_FMT_NV12:
780 case V4L2_PIX_FMT_NV21:
781 case V4L2_PIX_FMT_NV16:
782 case V4L2_PIX_FMT_NV61:
783 out_buf2 = out_buf + dst_stride * dst_height;
784 break;
785 default:
786 out_buf2 = 0;
787 }
788
789 out_pitch = BF_PXP_OUT_PITCH_PITCH(dst_stride);
790 out_lrc = BF_PXP_OUT_LRC_X(dst_width - 1) |
791 BF_PXP_OUT_LRC_Y(dst_height - 1);
792 /* PS covers whole output */
793 out_ps_ulc = BF_PXP_OUT_PS_ULC_X(0) | BF_PXP_OUT_PS_ULC_Y(0);
794 out_ps_lrc = BF_PXP_OUT_PS_LRC_X(dst_width - 1) |
795 BF_PXP_OUT_PS_LRC_Y(dst_height - 1);
796 /* no AS */
797 as_ulc = BF_PXP_OUT_AS_ULC_X(1) | BF_PXP_OUT_AS_ULC_Y(1);
798 as_lrc = BF_PXP_OUT_AS_LRC_X(0) | BF_PXP_OUT_AS_LRC_Y(0);
799
800 decx = (src_width <= dst_width) ? 0 : ilog2(src_width / dst_width);
801 decy = (src_height <= dst_height) ? 0 : ilog2(src_height / dst_height);
802 ps_ctrl = BF_PXP_PS_CTRL_DECX(decx) | BF_PXP_PS_CTRL_DECY(decy) |
803 pxp_v4l2_pix_fmt_to_ps_format(src_fourcc);
804 ps_buf = p_in;
805 y_size = src_stride * src_height;
806 switch (src_fourcc) {
807 case V4L2_PIX_FMT_YUV420:
808 ps_ubuf = ps_buf + y_size;
809 ps_vbuf = ps_ubuf + y_size / 4;
810 break;
811 case V4L2_PIX_FMT_YUV422P:
812 ps_ubuf = ps_buf + y_size;
813 ps_vbuf = ps_ubuf + y_size / 2;
814 break;
815 case V4L2_PIX_FMT_NV12:
816 case V4L2_PIX_FMT_NV21:
817 case V4L2_PIX_FMT_NV16:
818 case V4L2_PIX_FMT_NV61:
819 ps_ubuf = ps_buf + y_size;
820 ps_vbuf = 0;
821 break;
822 case V4L2_PIX_FMT_GREY:
823 case V4L2_PIX_FMT_Y4:
824 ps_ubuf = 0;
825 /* In grayscale mode, ps_vbuf contents are reused as CbCr */
826 ps_vbuf = 0x8080;
827 break;
828 default:
829 ps_ubuf = 0;
830 ps_vbuf = 0;
831 break;
832 }
833 ps_pitch = BF_PXP_PS_PITCH_PITCH(src_stride);
834 if (decx) {
835 xscale = (src_width >> decx) * 0x1000 / dst_width;
836 } else {
837 switch (src_fourcc) {
838 case V4L2_PIX_FMT_UYVY:
839 case V4L2_PIX_FMT_YUYV:
840 case V4L2_PIX_FMT_VYUY:
841 case V4L2_PIX_FMT_YVYU:
842 case V4L2_PIX_FMT_NV16:
843 case V4L2_PIX_FMT_NV12:
844 case V4L2_PIX_FMT_NV21:
845 case V4L2_PIX_FMT_NV61:
846 case V4L2_PIX_FMT_YUV422P:
847 case V4L2_PIX_FMT_YUV420:
848 /*
849 * This avoids sampling past the right edge for
850 * horizontally chroma subsampled formats.
851 */
852 xscale = (src_width - 2) * 0x1000 / (dst_width - 1);
853 break;
854 default:
855 xscale = (src_width - 1) * 0x1000 / (dst_width - 1);
856 break;
857 }
858 }
859 if (decy)
860 yscale = (src_height >> decy) * 0x1000 / dst_height;
861 else
862 yscale = (src_height - 1) * 0x1000 / (dst_height - 1);
863 ps_scale = BF_PXP_PS_SCALE_YSCALE(yscale) |
864 BF_PXP_PS_SCALE_XSCALE(xscale);
865 ps_offset = BF_PXP_PS_OFFSET_YOFFSET(0) | BF_PXP_PS_OFFSET_XOFFSET(0);
866
867 writel(ctrl, dev->mmio + HW_PXP_CTRL);
868 /* skip STAT */
869 writel(out_ctrl, dev->mmio + HW_PXP_OUT_CTRL);
870 writel(out_buf, dev->mmio + HW_PXP_OUT_BUF);
871 writel(out_buf2, dev->mmio + HW_PXP_OUT_BUF2);
872 writel(out_pitch, dev->mmio + HW_PXP_OUT_PITCH);
873 writel(out_lrc, dev->mmio + HW_PXP_OUT_LRC);
874 writel(out_ps_ulc, dev->mmio + HW_PXP_OUT_PS_ULC);
875 writel(out_ps_lrc, dev->mmio + HW_PXP_OUT_PS_LRC);
876 writel(as_ulc, dev->mmio + HW_PXP_OUT_AS_ULC);
877 writel(as_lrc, dev->mmio + HW_PXP_OUT_AS_LRC);
878 writel(ps_ctrl, dev->mmio + HW_PXP_PS_CTRL);
879 writel(ps_buf, dev->mmio + HW_PXP_PS_BUF);
880 writel(ps_ubuf, dev->mmio + HW_PXP_PS_UBUF);
881 writel(ps_vbuf, dev->mmio + HW_PXP_PS_VBUF);
882 writel(ps_pitch, dev->mmio + HW_PXP_PS_PITCH);
883 writel(0x00ffffff, dev->mmio + HW_PXP_PS_BACKGROUND_0);
884 writel(ps_scale, dev->mmio + HW_PXP_PS_SCALE);
885 writel(ps_offset, dev->mmio + HW_PXP_PS_OFFSET);
886 /* disable processed surface color keying */
887 writel(0x00ffffff, dev->mmio + HW_PXP_PS_CLRKEYLOW_0);
888 writel(0x00000000, dev->mmio + HW_PXP_PS_CLRKEYHIGH_0);
889
890 /* disable alpha surface color keying */
891 writel(0x00ffffff, dev->mmio + HW_PXP_AS_CLRKEYLOW_0);
892 writel(0x00000000, dev->mmio + HW_PXP_AS_CLRKEYHIGH_0);
893
894 /* setup CSC */
895 pxp_setup_csc(ctx);
896
897 /* bypass LUT */
898 writel(BM_PXP_LUT_CTRL_BYPASS, dev->mmio + HW_PXP_LUT_CTRL);
899
900 writel(BF_PXP_DATA_PATH_CTRL0_MUX15_SEL(0)|
901 BF_PXP_DATA_PATH_CTRL0_MUX14_SEL(1)|
902 BF_PXP_DATA_PATH_CTRL0_MUX13_SEL(0)|
903 BF_PXP_DATA_PATH_CTRL0_MUX12_SEL(0)|
904 BF_PXP_DATA_PATH_CTRL0_MUX11_SEL(0)|
905 BF_PXP_DATA_PATH_CTRL0_MUX10_SEL(0)|
906 BF_PXP_DATA_PATH_CTRL0_MUX9_SEL(1)|
907 BF_PXP_DATA_PATH_CTRL0_MUX8_SEL(0)|
908 BF_PXP_DATA_PATH_CTRL0_MUX7_SEL(0)|
909 BF_PXP_DATA_PATH_CTRL0_MUX6_SEL(0)|
910 BF_PXP_DATA_PATH_CTRL0_MUX5_SEL(0)|
911 BF_PXP_DATA_PATH_CTRL0_MUX4_SEL(0)|
912 BF_PXP_DATA_PATH_CTRL0_MUX3_SEL(0)|
913 BF_PXP_DATA_PATH_CTRL0_MUX2_SEL(0)|
914 BF_PXP_DATA_PATH_CTRL0_MUX1_SEL(0)|
915 BF_PXP_DATA_PATH_CTRL0_MUX0_SEL(0),
916 dev->mmio + HW_PXP_DATA_PATH_CTRL0);
917 writel(BF_PXP_DATA_PATH_CTRL1_MUX17_SEL(1) |
918 BF_PXP_DATA_PATH_CTRL1_MUX16_SEL(1),
919 dev->mmio + HW_PXP_DATA_PATH_CTRL1);
920
921 writel(0xffff, dev->mmio + HW_PXP_IRQ_MASK);
922
923 /* ungate, enable PS/AS/OUT and PXP operation */
924 writel(BM_PXP_CTRL_IRQ_ENABLE, dev->mmio + HW_PXP_CTRL_SET);
925 writel(BM_PXP_CTRL_ENABLE | BM_PXP_CTRL_ENABLE_CSC2 |
926 BM_PXP_CTRL_ENABLE_LUT | BM_PXP_CTRL_ENABLE_ROTATE0 |
927 BM_PXP_CTRL_ENABLE_PS_AS_OUT, dev->mmio + HW_PXP_CTRL_SET);
928
929 return 0;
930 }
931
pxp_job_finish(struct pxp_dev * dev)932 static void pxp_job_finish(struct pxp_dev *dev)
933 {
934 struct pxp_ctx *curr_ctx;
935 struct vb2_v4l2_buffer *src_vb, *dst_vb;
936 unsigned long flags;
937
938 curr_ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
939
940 if (curr_ctx == NULL) {
941 pr_err("Instance released before the end of transaction\n");
942 return;
943 }
944
945 src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
946 dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
947
948 spin_lock_irqsave(&dev->irqlock, flags);
949 v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
950 v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
951 spin_unlock_irqrestore(&dev->irqlock, flags);
952
953 dprintk(curr_ctx->dev, "Finishing transaction\n");
954 v4l2_m2m_job_finish(dev->m2m_dev, curr_ctx->fh.m2m_ctx);
955 }
956
957 /*
958 * mem2mem callbacks
959 */
pxp_device_run(void * priv)960 static void pxp_device_run(void *priv)
961 {
962 struct pxp_ctx *ctx = priv;
963 struct vb2_v4l2_buffer *src_buf, *dst_buf;
964
965 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
966 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
967
968 pxp_start(ctx, src_buf, dst_buf);
969 }
970
pxp_job_ready(void * priv)971 static int pxp_job_ready(void *priv)
972 {
973 struct pxp_ctx *ctx = priv;
974
975 if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < 1 ||
976 v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < 1) {
977 dprintk(ctx->dev, "Not enough buffers available\n");
978 return 0;
979 }
980
981 return 1;
982 }
983
pxp_job_abort(void * priv)984 static void pxp_job_abort(void *priv)
985 {
986 struct pxp_ctx *ctx = priv;
987
988 /* Will cancel the transaction in the next interrupt handler */
989 ctx->aborting = 1;
990 }
991
992 /*
993 * interrupt handler
994 */
pxp_irq_handler(int irq,void * dev_id)995 static irqreturn_t pxp_irq_handler(int irq, void *dev_id)
996 {
997 struct pxp_dev *dev = dev_id;
998 u32 stat;
999
1000 stat = readl(dev->mmio + HW_PXP_STAT);
1001
1002 if (stat & BM_PXP_STAT_IRQ0) {
1003 /* we expect x = 0, y = height, irq0 = 1 */
1004 if (stat & ~(BM_PXP_STAT_BLOCKX | BM_PXP_STAT_BLOCKY |
1005 BM_PXP_STAT_IRQ0))
1006 dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat);
1007 writel(BM_PXP_STAT_IRQ0, dev->mmio + HW_PXP_STAT_CLR);
1008
1009 pxp_job_finish(dev);
1010 } else {
1011 u32 irq = readl(dev->mmio + HW_PXP_IRQ);
1012
1013 dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat);
1014 dprintk(dev, "%s: irq = 0x%08x\n", __func__, irq);
1015
1016 writel(irq, dev->mmio + HW_PXP_IRQ_CLR);
1017 }
1018
1019 return IRQ_HANDLED;
1020 }
1021
1022 /*
1023 * video ioctls
1024 */
pxp_querycap(struct file * file,void * priv,struct v4l2_capability * cap)1025 static int pxp_querycap(struct file *file, void *priv,
1026 struct v4l2_capability *cap)
1027 {
1028 strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
1029 strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
1030 snprintf(cap->bus_info, sizeof(cap->bus_info),
1031 "platform:%s", MEM2MEM_NAME);
1032 return 0;
1033 }
1034
pxp_enum_fmt(struct v4l2_fmtdesc * f,u32 type)1035 static int pxp_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
1036 {
1037 int i, num;
1038 struct pxp_fmt *fmt;
1039
1040 num = 0;
1041
1042 for (i = 0; i < NUM_FORMATS; ++i) {
1043 if (formats[i].types & type) {
1044 /* index-th format of type type found ? */
1045 if (num == f->index)
1046 break;
1047 /*
1048 * Correct type but haven't reached our index yet,
1049 * just increment per-type index
1050 */
1051 ++num;
1052 }
1053 }
1054
1055 if (i < NUM_FORMATS) {
1056 /* Format found */
1057 fmt = &formats[i];
1058 f->pixelformat = fmt->fourcc;
1059 return 0;
1060 }
1061
1062 /* Format not found */
1063 return -EINVAL;
1064 }
1065
pxp_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)1066 static int pxp_enum_fmt_vid_cap(struct file *file, void *priv,
1067 struct v4l2_fmtdesc *f)
1068 {
1069 return pxp_enum_fmt(f, MEM2MEM_CAPTURE);
1070 }
1071
pxp_enum_fmt_vid_out(struct file * file,void * priv,struct v4l2_fmtdesc * f)1072 static int pxp_enum_fmt_vid_out(struct file *file, void *priv,
1073 struct v4l2_fmtdesc *f)
1074 {
1075 return pxp_enum_fmt(f, MEM2MEM_OUTPUT);
1076 }
1077
pxp_g_fmt(struct pxp_ctx * ctx,struct v4l2_format * f)1078 static int pxp_g_fmt(struct pxp_ctx *ctx, struct v4l2_format *f)
1079 {
1080 struct vb2_queue *vq;
1081 struct pxp_q_data *q_data;
1082
1083 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1084 if (!vq)
1085 return -EINVAL;
1086
1087 q_data = get_q_data(ctx, f->type);
1088
1089 f->fmt.pix.width = q_data->width;
1090 f->fmt.pix.height = q_data->height;
1091 f->fmt.pix.field = V4L2_FIELD_NONE;
1092 f->fmt.pix.pixelformat = q_data->fmt->fourcc;
1093 f->fmt.pix.bytesperline = q_data->bytesperline;
1094 f->fmt.pix.sizeimage = q_data->sizeimage;
1095 f->fmt.pix.colorspace = ctx->colorspace;
1096 f->fmt.pix.xfer_func = ctx->xfer_func;
1097 f->fmt.pix.ycbcr_enc = q_data->ycbcr_enc;
1098 f->fmt.pix.quantization = q_data->quant;
1099
1100 return 0;
1101 }
1102
pxp_g_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)1103 static int pxp_g_fmt_vid_out(struct file *file, void *priv,
1104 struct v4l2_format *f)
1105 {
1106 return pxp_g_fmt(file2ctx(file), f);
1107 }
1108
pxp_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)1109 static int pxp_g_fmt_vid_cap(struct file *file, void *priv,
1110 struct v4l2_format *f)
1111 {
1112 return pxp_g_fmt(file2ctx(file), f);
1113 }
1114
pxp_bytesperline(struct pxp_fmt * fmt,u32 width)1115 static inline u32 pxp_bytesperline(struct pxp_fmt *fmt, u32 width)
1116 {
1117 switch (fmt->fourcc) {
1118 case V4L2_PIX_FMT_YUV420:
1119 case V4L2_PIX_FMT_NV12:
1120 case V4L2_PIX_FMT_NV21:
1121 case V4L2_PIX_FMT_YUV422P:
1122 case V4L2_PIX_FMT_NV16:
1123 case V4L2_PIX_FMT_NV61:
1124 return width;
1125 default:
1126 return (width * fmt->depth) >> 3;
1127 }
1128 }
1129
pxp_sizeimage(struct pxp_fmt * fmt,u32 width,u32 height)1130 static inline u32 pxp_sizeimage(struct pxp_fmt *fmt, u32 width, u32 height)
1131 {
1132 return (fmt->depth * width * height) >> 3;
1133 }
1134
pxp_try_fmt(struct v4l2_format * f,struct pxp_fmt * fmt)1135 static int pxp_try_fmt(struct v4l2_format *f, struct pxp_fmt *fmt)
1136 {
1137 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, ALIGN_W,
1138 &f->fmt.pix.height, MIN_H, MAX_H, ALIGN_H, 0);
1139
1140 f->fmt.pix.bytesperline = pxp_bytesperline(fmt, f->fmt.pix.width);
1141 f->fmt.pix.sizeimage = pxp_sizeimage(fmt, f->fmt.pix.width,
1142 f->fmt.pix.height);
1143 f->fmt.pix.field = V4L2_FIELD_NONE;
1144
1145 return 0;
1146 }
1147
1148 static void
pxp_fixup_colorimetry_cap(struct pxp_ctx * ctx,u32 dst_fourcc,enum v4l2_ycbcr_encoding * ycbcr_enc,enum v4l2_quantization * quantization)1149 pxp_fixup_colorimetry_cap(struct pxp_ctx *ctx, u32 dst_fourcc,
1150 enum v4l2_ycbcr_encoding *ycbcr_enc,
1151 enum v4l2_quantization *quantization)
1152 {
1153 bool dst_is_yuv = pxp_v4l2_pix_fmt_is_yuv(dst_fourcc);
1154
1155 if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) ==
1156 dst_is_yuv) {
1157 /*
1158 * There is no support for conversion between different YCbCr
1159 * encodings or between RGB limited and full range.
1160 */
1161 *ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc;
1162 *quantization = ctx->q_data[V4L2_M2M_SRC].quant;
1163 } else {
1164 *ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(ctx->colorspace);
1165 *quantization = V4L2_MAP_QUANTIZATION_DEFAULT(!dst_is_yuv,
1166 ctx->colorspace,
1167 *ycbcr_enc);
1168 }
1169 }
1170
pxp_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)1171 static int pxp_try_fmt_vid_cap(struct file *file, void *priv,
1172 struct v4l2_format *f)
1173 {
1174 struct pxp_fmt *fmt;
1175 struct pxp_ctx *ctx = file2ctx(file);
1176
1177 fmt = find_format(f);
1178 if (!fmt) {
1179 f->fmt.pix.pixelformat = formats[0].fourcc;
1180 fmt = find_format(f);
1181 }
1182 if (!(fmt->types & MEM2MEM_CAPTURE)) {
1183 v4l2_err(&ctx->dev->v4l2_dev,
1184 "Fourcc format (0x%08x) invalid.\n",
1185 f->fmt.pix.pixelformat);
1186 return -EINVAL;
1187 }
1188
1189 f->fmt.pix.colorspace = ctx->colorspace;
1190 f->fmt.pix.xfer_func = ctx->xfer_func;
1191
1192 pxp_fixup_colorimetry_cap(ctx, fmt->fourcc,
1193 &f->fmt.pix.ycbcr_enc,
1194 &f->fmt.pix.quantization);
1195
1196 return pxp_try_fmt(f, fmt);
1197 }
1198
pxp_try_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)1199 static int pxp_try_fmt_vid_out(struct file *file, void *priv,
1200 struct v4l2_format *f)
1201 {
1202 struct pxp_fmt *fmt;
1203 struct pxp_ctx *ctx = file2ctx(file);
1204
1205 fmt = find_format(f);
1206 if (!fmt) {
1207 f->fmt.pix.pixelformat = formats[0].fourcc;
1208 fmt = find_format(f);
1209 }
1210 if (!(fmt->types & MEM2MEM_OUTPUT)) {
1211 v4l2_err(&ctx->dev->v4l2_dev,
1212 "Fourcc format (0x%08x) invalid.\n",
1213 f->fmt.pix.pixelformat);
1214 return -EINVAL;
1215 }
1216
1217 if (!f->fmt.pix.colorspace)
1218 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1219
1220 return pxp_try_fmt(f, fmt);
1221 }
1222
pxp_s_fmt(struct pxp_ctx * ctx,struct v4l2_format * f)1223 static int pxp_s_fmt(struct pxp_ctx *ctx, struct v4l2_format *f)
1224 {
1225 struct pxp_q_data *q_data;
1226 struct vb2_queue *vq;
1227
1228 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1229 if (!vq)
1230 return -EINVAL;
1231
1232 q_data = get_q_data(ctx, f->type);
1233 if (!q_data)
1234 return -EINVAL;
1235
1236 if (vb2_is_busy(vq)) {
1237 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
1238 return -EBUSY;
1239 }
1240
1241 q_data->fmt = find_format(f);
1242 q_data->width = f->fmt.pix.width;
1243 q_data->height = f->fmt.pix.height;
1244 q_data->bytesperline = f->fmt.pix.bytesperline;
1245 q_data->sizeimage = f->fmt.pix.sizeimage;
1246
1247 dprintk(ctx->dev,
1248 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
1249 f->type, q_data->width, q_data->height, q_data->fmt->fourcc);
1250
1251 return 0;
1252 }
1253
pxp_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)1254 static int pxp_s_fmt_vid_cap(struct file *file, void *priv,
1255 struct v4l2_format *f)
1256 {
1257 struct pxp_ctx *ctx = file2ctx(file);
1258 int ret;
1259
1260 ret = pxp_try_fmt_vid_cap(file, priv, f);
1261 if (ret)
1262 return ret;
1263
1264 ret = pxp_s_fmt(file2ctx(file), f);
1265 if (ret)
1266 return ret;
1267
1268 ctx->q_data[V4L2_M2M_DST].ycbcr_enc = f->fmt.pix.ycbcr_enc;
1269 ctx->q_data[V4L2_M2M_DST].quant = f->fmt.pix.quantization;
1270
1271 return 0;
1272 }
1273
pxp_s_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)1274 static int pxp_s_fmt_vid_out(struct file *file, void *priv,
1275 struct v4l2_format *f)
1276 {
1277 struct pxp_ctx *ctx = file2ctx(file);
1278 int ret;
1279
1280 ret = pxp_try_fmt_vid_out(file, priv, f);
1281 if (ret)
1282 return ret;
1283
1284 ret = pxp_s_fmt(file2ctx(file), f);
1285 if (ret)
1286 return ret;
1287
1288 ctx->colorspace = f->fmt.pix.colorspace;
1289 ctx->xfer_func = f->fmt.pix.xfer_func;
1290 ctx->q_data[V4L2_M2M_SRC].ycbcr_enc = f->fmt.pix.ycbcr_enc;
1291 ctx->q_data[V4L2_M2M_SRC].quant = f->fmt.pix.quantization;
1292
1293 pxp_fixup_colorimetry_cap(ctx, ctx->q_data[V4L2_M2M_DST].fmt->fourcc,
1294 &ctx->q_data[V4L2_M2M_DST].ycbcr_enc,
1295 &ctx->q_data[V4L2_M2M_DST].quant);
1296
1297 return 0;
1298 }
1299
pxp_s_ctrl(struct v4l2_ctrl * ctrl)1300 static int pxp_s_ctrl(struct v4l2_ctrl *ctrl)
1301 {
1302 struct pxp_ctx *ctx =
1303 container_of(ctrl->handler, struct pxp_ctx, hdl);
1304
1305 switch (ctrl->id) {
1306 case V4L2_CID_HFLIP:
1307 if (ctrl->val)
1308 ctx->mode |= MEM2MEM_HFLIP;
1309 else
1310 ctx->mode &= ~MEM2MEM_HFLIP;
1311 break;
1312
1313 case V4L2_CID_VFLIP:
1314 if (ctrl->val)
1315 ctx->mode |= MEM2MEM_VFLIP;
1316 else
1317 ctx->mode &= ~MEM2MEM_VFLIP;
1318 break;
1319
1320 case V4L2_CID_ALPHA_COMPONENT:
1321 ctx->alpha_component = ctrl->val;
1322 break;
1323
1324 default:
1325 v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
1326 return -EINVAL;
1327 }
1328
1329 return 0;
1330 }
1331
1332 static const struct v4l2_ctrl_ops pxp_ctrl_ops = {
1333 .s_ctrl = pxp_s_ctrl,
1334 };
1335
1336 static const struct v4l2_ioctl_ops pxp_ioctl_ops = {
1337 .vidioc_querycap = pxp_querycap,
1338
1339 .vidioc_enum_fmt_vid_cap = pxp_enum_fmt_vid_cap,
1340 .vidioc_g_fmt_vid_cap = pxp_g_fmt_vid_cap,
1341 .vidioc_try_fmt_vid_cap = pxp_try_fmt_vid_cap,
1342 .vidioc_s_fmt_vid_cap = pxp_s_fmt_vid_cap,
1343
1344 .vidioc_enum_fmt_vid_out = pxp_enum_fmt_vid_out,
1345 .vidioc_g_fmt_vid_out = pxp_g_fmt_vid_out,
1346 .vidioc_try_fmt_vid_out = pxp_try_fmt_vid_out,
1347 .vidioc_s_fmt_vid_out = pxp_s_fmt_vid_out,
1348
1349 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
1350 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
1351 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
1352 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
1353 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
1354 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
1355 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
1356
1357 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
1358 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
1359
1360 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1361 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1362 };
1363
1364 /*
1365 * Queue operations
1366 */
pxp_queue_setup(struct vb2_queue * vq,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])1367 static int pxp_queue_setup(struct vb2_queue *vq,
1368 unsigned int *nbuffers, unsigned int *nplanes,
1369 unsigned int sizes[], struct device *alloc_devs[])
1370 {
1371 struct pxp_ctx *ctx = vb2_get_drv_priv(vq);
1372 struct pxp_q_data *q_data;
1373 unsigned int size, count = *nbuffers;
1374
1375 q_data = get_q_data(ctx, vq->type);
1376
1377 size = q_data->sizeimage;
1378
1379 *nbuffers = count;
1380
1381 if (*nplanes)
1382 return sizes[0] < size ? -EINVAL : 0;
1383
1384 *nplanes = 1;
1385 sizes[0] = size;
1386
1387 dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size);
1388
1389 return 0;
1390 }
1391
pxp_buf_prepare(struct vb2_buffer * vb)1392 static int pxp_buf_prepare(struct vb2_buffer *vb)
1393 {
1394 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1395 struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1396 struct pxp_dev *dev = ctx->dev;
1397 struct pxp_q_data *q_data;
1398
1399 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
1400
1401 q_data = get_q_data(ctx, vb->vb2_queue->type);
1402 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1403 if (vbuf->field == V4L2_FIELD_ANY)
1404 vbuf->field = V4L2_FIELD_NONE;
1405 if (vbuf->field != V4L2_FIELD_NONE) {
1406 dprintk(dev, "%s field isn't supported\n", __func__);
1407 return -EINVAL;
1408 }
1409 }
1410
1411 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1412 dprintk(dev, "%s data will not fit into plane (%lu < %lu)\n",
1413 __func__, vb2_plane_size(vb, 0),
1414 (long)q_data->sizeimage);
1415 return -EINVAL;
1416 }
1417
1418 vb2_set_plane_payload(vb, 0, q_data->sizeimage);
1419
1420 return 0;
1421 }
1422
pxp_buf_queue(struct vb2_buffer * vb)1423 static void pxp_buf_queue(struct vb2_buffer *vb)
1424 {
1425 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1426 struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1427
1428 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1429 }
1430
pxp_start_streaming(struct vb2_queue * q,unsigned int count)1431 static int pxp_start_streaming(struct vb2_queue *q, unsigned int count)
1432 {
1433 struct pxp_ctx *ctx = vb2_get_drv_priv(q);
1434 struct pxp_q_data *q_data = get_q_data(ctx, q->type);
1435
1436 q_data->sequence = 0;
1437 return 0;
1438 }
1439
pxp_stop_streaming(struct vb2_queue * q)1440 static void pxp_stop_streaming(struct vb2_queue *q)
1441 {
1442 struct pxp_ctx *ctx = vb2_get_drv_priv(q);
1443 struct vb2_v4l2_buffer *vbuf;
1444 unsigned long flags;
1445
1446 for (;;) {
1447 if (V4L2_TYPE_IS_OUTPUT(q->type))
1448 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1449 else
1450 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1451 if (vbuf == NULL)
1452 return;
1453 spin_lock_irqsave(&ctx->dev->irqlock, flags);
1454 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1455 spin_unlock_irqrestore(&ctx->dev->irqlock, flags);
1456 }
1457 }
1458
1459 static const struct vb2_ops pxp_qops = {
1460 .queue_setup = pxp_queue_setup,
1461 .buf_prepare = pxp_buf_prepare,
1462 .buf_queue = pxp_buf_queue,
1463 .start_streaming = pxp_start_streaming,
1464 .stop_streaming = pxp_stop_streaming,
1465 .wait_prepare = vb2_ops_wait_prepare,
1466 .wait_finish = vb2_ops_wait_finish,
1467 };
1468
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1469 static int queue_init(void *priv, struct vb2_queue *src_vq,
1470 struct vb2_queue *dst_vq)
1471 {
1472 struct pxp_ctx *ctx = priv;
1473 int ret;
1474
1475 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1476 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1477 src_vq->drv_priv = ctx;
1478 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1479 src_vq->ops = &pxp_qops;
1480 src_vq->mem_ops = &vb2_dma_contig_memops;
1481 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1482 src_vq->lock = &ctx->dev->dev_mutex;
1483 src_vq->dev = ctx->dev->v4l2_dev.dev;
1484
1485 ret = vb2_queue_init(src_vq);
1486 if (ret)
1487 return ret;
1488
1489 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1490 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1491 dst_vq->drv_priv = ctx;
1492 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1493 dst_vq->ops = &pxp_qops;
1494 dst_vq->mem_ops = &vb2_dma_contig_memops;
1495 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1496 dst_vq->lock = &ctx->dev->dev_mutex;
1497 dst_vq->dev = ctx->dev->v4l2_dev.dev;
1498
1499 return vb2_queue_init(dst_vq);
1500 }
1501
1502 /*
1503 * File operations
1504 */
pxp_open(struct file * file)1505 static int pxp_open(struct file *file)
1506 {
1507 struct pxp_dev *dev = video_drvdata(file);
1508 struct pxp_ctx *ctx = NULL;
1509 struct v4l2_ctrl_handler *hdl;
1510 int rc = 0;
1511
1512 if (mutex_lock_interruptible(&dev->dev_mutex))
1513 return -ERESTARTSYS;
1514 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1515 if (!ctx) {
1516 rc = -ENOMEM;
1517 goto open_unlock;
1518 }
1519
1520 v4l2_fh_init(&ctx->fh, video_devdata(file));
1521 file->private_data = &ctx->fh;
1522 ctx->dev = dev;
1523 hdl = &ctx->hdl;
1524 v4l2_ctrl_handler_init(hdl, 4);
1525 v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
1526 v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
1527 v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
1528 0, 255, 1, 255);
1529 if (hdl->error) {
1530 rc = hdl->error;
1531 v4l2_ctrl_handler_free(hdl);
1532 kfree(ctx);
1533 goto open_unlock;
1534 }
1535 ctx->fh.ctrl_handler = hdl;
1536 v4l2_ctrl_handler_setup(hdl);
1537
1538 ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0];
1539 ctx->q_data[V4L2_M2M_SRC].width = 640;
1540 ctx->q_data[V4L2_M2M_SRC].height = 480;
1541 ctx->q_data[V4L2_M2M_SRC].bytesperline =
1542 pxp_bytesperline(&formats[0], 640);
1543 ctx->q_data[V4L2_M2M_SRC].sizeimage =
1544 pxp_sizeimage(&formats[0], 640, 480);
1545 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
1546 ctx->colorspace = V4L2_COLORSPACE_REC709;
1547
1548 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
1549
1550 if (IS_ERR(ctx->fh.m2m_ctx)) {
1551 rc = PTR_ERR(ctx->fh.m2m_ctx);
1552
1553 v4l2_ctrl_handler_free(hdl);
1554 v4l2_fh_exit(&ctx->fh);
1555 kfree(ctx);
1556 goto open_unlock;
1557 }
1558
1559 v4l2_fh_add(&ctx->fh);
1560 atomic_inc(&dev->num_inst);
1561
1562 dprintk(dev, "Created instance: %p, m2m_ctx: %p\n",
1563 ctx, ctx->fh.m2m_ctx);
1564
1565 open_unlock:
1566 mutex_unlock(&dev->dev_mutex);
1567 return rc;
1568 }
1569
pxp_release(struct file * file)1570 static int pxp_release(struct file *file)
1571 {
1572 struct pxp_dev *dev = video_drvdata(file);
1573 struct pxp_ctx *ctx = file2ctx(file);
1574
1575 dprintk(dev, "Releasing instance %p\n", ctx);
1576
1577 v4l2_fh_del(&ctx->fh);
1578 v4l2_fh_exit(&ctx->fh);
1579 v4l2_ctrl_handler_free(&ctx->hdl);
1580 mutex_lock(&dev->dev_mutex);
1581 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1582 mutex_unlock(&dev->dev_mutex);
1583 kfree(ctx);
1584
1585 atomic_dec(&dev->num_inst);
1586
1587 return 0;
1588 }
1589
1590 static const struct v4l2_file_operations pxp_fops = {
1591 .owner = THIS_MODULE,
1592 .open = pxp_open,
1593 .release = pxp_release,
1594 .poll = v4l2_m2m_fop_poll,
1595 .unlocked_ioctl = video_ioctl2,
1596 .mmap = v4l2_m2m_fop_mmap,
1597 };
1598
1599 static const struct video_device pxp_videodev = {
1600 .name = MEM2MEM_NAME,
1601 .vfl_dir = VFL_DIR_M2M,
1602 .fops = &pxp_fops,
1603 .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
1604 .ioctl_ops = &pxp_ioctl_ops,
1605 .minor = -1,
1606 .release = video_device_release_empty,
1607 };
1608
1609 static const struct v4l2_m2m_ops m2m_ops = {
1610 .device_run = pxp_device_run,
1611 .job_ready = pxp_job_ready,
1612 .job_abort = pxp_job_abort,
1613 };
1614
pxp_soft_reset(struct pxp_dev * dev)1615 static int pxp_soft_reset(struct pxp_dev *dev)
1616 {
1617 int ret;
1618 u32 val;
1619
1620 writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR);
1621 writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR);
1622
1623 writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET);
1624
1625 ret = readl_poll_timeout(dev->mmio + HW_PXP_CTRL, val,
1626 val & BM_PXP_CTRL_CLKGATE, 0, 100);
1627 if (ret < 0)
1628 return ret;
1629
1630 writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR);
1631 writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR);
1632
1633 return 0;
1634 }
1635
pxp_probe(struct platform_device * pdev)1636 static int pxp_probe(struct platform_device *pdev)
1637 {
1638 struct pxp_dev *dev;
1639 struct resource *res;
1640 struct video_device *vfd;
1641 int irq;
1642 int ret;
1643
1644 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
1645 if (!dev)
1646 return -ENOMEM;
1647
1648 dev->clk = devm_clk_get(&pdev->dev, "axi");
1649 if (IS_ERR(dev->clk)) {
1650 ret = PTR_ERR(dev->clk);
1651 dev_err(&pdev->dev, "Failed to get clk: %d\n", ret);
1652 return ret;
1653 }
1654
1655 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1656 dev->mmio = devm_ioremap_resource(&pdev->dev, res);
1657 if (IS_ERR(dev->mmio))
1658 return PTR_ERR(dev->mmio);
1659
1660 irq = platform_get_irq(pdev, 0);
1661 if (irq < 0)
1662 return irq;
1663
1664 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, pxp_irq_handler,
1665 IRQF_ONESHOT, dev_name(&pdev->dev), dev);
1666 if (ret < 0) {
1667 dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
1668 return ret;
1669 }
1670
1671 ret = clk_prepare_enable(dev->clk);
1672 if (ret < 0)
1673 return ret;
1674
1675 ret = pxp_soft_reset(dev);
1676 if (ret < 0) {
1677 dev_err(&pdev->dev, "PXP reset timeout: %d\n", ret);
1678 goto err_clk;
1679 }
1680
1681 spin_lock_init(&dev->irqlock);
1682
1683 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1684 if (ret)
1685 goto err_clk;
1686
1687 atomic_set(&dev->num_inst, 0);
1688 mutex_init(&dev->dev_mutex);
1689
1690 dev->vfd = pxp_videodev;
1691 vfd = &dev->vfd;
1692 vfd->lock = &dev->dev_mutex;
1693 vfd->v4l2_dev = &dev->v4l2_dev;
1694
1695 video_set_drvdata(vfd, dev);
1696 snprintf(vfd->name, sizeof(vfd->name), "%s", pxp_videodev.name);
1697 v4l2_info(&dev->v4l2_dev,
1698 "Device registered as /dev/video%d\n", vfd->num);
1699
1700 platform_set_drvdata(pdev, dev);
1701
1702 dev->m2m_dev = v4l2_m2m_init(&m2m_ops);
1703 if (IS_ERR(dev->m2m_dev)) {
1704 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1705 ret = PTR_ERR(dev->m2m_dev);
1706 goto err_v4l2;
1707 }
1708
1709 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
1710 if (ret) {
1711 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1712 goto err_m2m;
1713 }
1714
1715 return 0;
1716
1717 err_m2m:
1718 v4l2_m2m_release(dev->m2m_dev);
1719 err_v4l2:
1720 v4l2_device_unregister(&dev->v4l2_dev);
1721 err_clk:
1722 clk_disable_unprepare(dev->clk);
1723
1724 return ret;
1725 }
1726
pxp_remove(struct platform_device * pdev)1727 static int pxp_remove(struct platform_device *pdev)
1728 {
1729 struct pxp_dev *dev = platform_get_drvdata(pdev);
1730
1731 writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_SET);
1732 writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET);
1733
1734 clk_disable_unprepare(dev->clk);
1735
1736 v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
1737 video_unregister_device(&dev->vfd);
1738 v4l2_m2m_release(dev->m2m_dev);
1739 v4l2_device_unregister(&dev->v4l2_dev);
1740
1741 return 0;
1742 }
1743
1744 static const struct of_device_id pxp_dt_ids[] = {
1745 { .compatible = "fsl,imx6ull-pxp", .data = NULL },
1746 { },
1747 };
1748 MODULE_DEVICE_TABLE(of, pxp_dt_ids);
1749
1750 static struct platform_driver pxp_driver = {
1751 .probe = pxp_probe,
1752 .remove = pxp_remove,
1753 .driver = {
1754 .name = MEM2MEM_NAME,
1755 .of_match_table = pxp_dt_ids,
1756 },
1757 };
1758
1759 module_platform_driver(pxp_driver);
1760
1761 MODULE_DESCRIPTION("i.MX PXP mem2mem scaler/CSC/rotator");
1762 MODULE_AUTHOR("Philipp Zabel <kernel@pengutronix.de>");
1763 MODULE_LICENSE("GPL");
1764