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8091cb7d JM |
1 | /* |
2 | * Support eMMa-PrP through mem2mem framework. | |
3 | * | |
4 | * eMMa-PrP is a piece of HW that allows fetching buffers | |
5 | * from one memory location and do several operations on | |
6 | * them such as scaling or format conversion giving, as a result | |
7 | * a new processed buffer in another memory location. | |
8 | * | |
9 | * Based on mem2mem_testdev.c by Pawel Osciak. | |
10 | * | |
11 | * Copyright (c) 2011 Vista Silicon S.L. | |
12 | * Javier Martin <javier.martin@vista-silicon.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by the | |
16 | * Free Software Foundation; either version 2 of the | |
17 | * License, or (at your option) any later version | |
18 | */ | |
19 | #include <linux/module.h> | |
20 | #include <linux/clk.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/io.h> | |
24 | ||
25 | #include <linux/platform_device.h> | |
26 | #include <media/v4l2-mem2mem.h> | |
27 | #include <media/v4l2-device.h> | |
28 | #include <media/v4l2-ioctl.h> | |
29 | #include <media/videobuf2-dma-contig.h> | |
1c17d8c7 | 30 | #include <linux/sizes.h> |
8091cb7d JM |
31 | |
32 | #define EMMAPRP_MODULE_NAME "mem2mem-emmaprp" | |
33 | ||
34 | MODULE_DESCRIPTION("Mem-to-mem device which supports eMMa-PrP present in mx2 SoCs"); | |
35 | MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | MODULE_VERSION("0.0.1"); | |
38 | ||
39 | static bool debug; | |
40 | module_param(debug, bool, 0644); | |
41 | ||
42 | #define MIN_W 32 | |
43 | #define MIN_H 32 | |
44 | #define MAX_W 2040 | |
45 | #define MAX_H 2046 | |
46 | ||
47 | #define S_ALIGN 1 /* multiple of 2 */ | |
48 | #define W_ALIGN_YUV420 3 /* multiple of 8 */ | |
49 | #define W_ALIGN_OTHERS 2 /* multiple of 4 */ | |
50 | #define H_ALIGN 1 /* multiple of 2 */ | |
51 | ||
52 | /* Flags that indicate a format can be used for capture/output */ | |
53 | #define MEM2MEM_CAPTURE (1 << 0) | |
54 | #define MEM2MEM_OUTPUT (1 << 1) | |
55 | ||
56 | #define MEM2MEM_NAME "m2m-emmaprp" | |
57 | ||
58 | /* In bytes, per queue */ | |
59 | #define MEM2MEM_VID_MEM_LIMIT SZ_16M | |
60 | ||
61 | #define dprintk(dev, fmt, arg...) \ | |
62 | v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) | |
63 | ||
64 | /* EMMA PrP */ | |
65 | #define PRP_CNTL 0x00 | |
66 | #define PRP_INTR_CNTL 0x04 | |
67 | #define PRP_INTRSTATUS 0x08 | |
68 | #define PRP_SOURCE_Y_PTR 0x0c | |
69 | #define PRP_SOURCE_CB_PTR 0x10 | |
70 | #define PRP_SOURCE_CR_PTR 0x14 | |
71 | #define PRP_DEST_RGB1_PTR 0x18 | |
72 | #define PRP_DEST_RGB2_PTR 0x1c | |
73 | #define PRP_DEST_Y_PTR 0x20 | |
74 | #define PRP_DEST_CB_PTR 0x24 | |
75 | #define PRP_DEST_CR_PTR 0x28 | |
76 | #define PRP_SRC_FRAME_SIZE 0x2c | |
77 | #define PRP_DEST_CH1_LINE_STRIDE 0x30 | |
78 | #define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 | |
79 | #define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 | |
80 | #define PRP_CH1_OUT_IMAGE_SIZE 0x3c | |
81 | #define PRP_CH2_OUT_IMAGE_SIZE 0x40 | |
82 | #define PRP_SRC_LINE_STRIDE 0x44 | |
83 | #define PRP_CSC_COEF_012 0x48 | |
84 | #define PRP_CSC_COEF_345 0x4c | |
85 | #define PRP_CSC_COEF_678 0x50 | |
86 | #define PRP_CH1_RZ_HORI_COEF1 0x54 | |
87 | #define PRP_CH1_RZ_HORI_COEF2 0x58 | |
88 | #define PRP_CH1_RZ_HORI_VALID 0x5c | |
89 | #define PRP_CH1_RZ_VERT_COEF1 0x60 | |
90 | #define PRP_CH1_RZ_VERT_COEF2 0x64 | |
91 | #define PRP_CH1_RZ_VERT_VALID 0x68 | |
92 | #define PRP_CH2_RZ_HORI_COEF1 0x6c | |
93 | #define PRP_CH2_RZ_HORI_COEF2 0x70 | |
94 | #define PRP_CH2_RZ_HORI_VALID 0x74 | |
95 | #define PRP_CH2_RZ_VERT_COEF1 0x78 | |
96 | #define PRP_CH2_RZ_VERT_COEF2 0x7c | |
97 | #define PRP_CH2_RZ_VERT_VALID 0x80 | |
98 | ||
99 | #define PRP_CNTL_CH1EN (1 << 0) | |
100 | #define PRP_CNTL_CH2EN (1 << 1) | |
101 | #define PRP_CNTL_CSIEN (1 << 2) | |
102 | #define PRP_CNTL_DATA_IN_YUV420 (0 << 3) | |
103 | #define PRP_CNTL_DATA_IN_YUV422 (1 << 3) | |
104 | #define PRP_CNTL_DATA_IN_RGB16 (2 << 3) | |
105 | #define PRP_CNTL_DATA_IN_RGB32 (3 << 3) | |
106 | #define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) | |
107 | #define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) | |
108 | #define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) | |
109 | #define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) | |
110 | #define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) | |
111 | #define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) | |
112 | #define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) | |
113 | #define PRP_CNTL_CH1_LEN (1 << 9) | |
114 | #define PRP_CNTL_CH2_LEN (1 << 10) | |
115 | #define PRP_CNTL_SKIP_FRAME (1 << 11) | |
116 | #define PRP_CNTL_SWRST (1 << 12) | |
117 | #define PRP_CNTL_CLKEN (1 << 13) | |
118 | #define PRP_CNTL_WEN (1 << 14) | |
119 | #define PRP_CNTL_CH1BYP (1 << 15) | |
120 | #define PRP_CNTL_IN_TSKIP(x) ((x) << 16) | |
121 | #define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) | |
122 | #define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) | |
123 | #define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) | |
124 | #define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) | |
125 | #define PRP_CNTL_CH2B1EN (1 << 29) | |
126 | #define PRP_CNTL_CH2B2EN (1 << 30) | |
127 | #define PRP_CNTL_CH2FEN (1 << 31) | |
128 | ||
129 | #define PRP_SIZE_HEIGHT(x) (x) | |
130 | #define PRP_SIZE_WIDTH(x) ((x) << 16) | |
131 | ||
132 | /* IRQ Enable and status register */ | |
133 | #define PRP_INTR_RDERR (1 << 0) | |
134 | #define PRP_INTR_CH1WERR (1 << 1) | |
135 | #define PRP_INTR_CH2WERR (1 << 2) | |
136 | #define PRP_INTR_CH1FC (1 << 3) | |
137 | #define PRP_INTR_CH2FC (1 << 5) | |
138 | #define PRP_INTR_LBOVF (1 << 7) | |
139 | #define PRP_INTR_CH2OVF (1 << 8) | |
140 | ||
141 | #define PRP_INTR_ST_RDERR (1 << 0) | |
142 | #define PRP_INTR_ST_CH1WERR (1 << 1) | |
143 | #define PRP_INTR_ST_CH2WERR (1 << 2) | |
144 | #define PRP_INTR_ST_CH2B2CI (1 << 3) | |
145 | #define PRP_INTR_ST_CH2B1CI (1 << 4) | |
146 | #define PRP_INTR_ST_CH1B2CI (1 << 5) | |
147 | #define PRP_INTR_ST_CH1B1CI (1 << 6) | |
148 | #define PRP_INTR_ST_LBOVF (1 << 7) | |
149 | #define PRP_INTR_ST_CH2OVF (1 << 8) | |
150 | ||
151 | struct emmaprp_fmt { | |
152 | char *name; | |
153 | u32 fourcc; | |
154 | /* Types the format can be used for */ | |
155 | u32 types; | |
156 | }; | |
157 | ||
158 | static struct emmaprp_fmt formats[] = { | |
159 | { | |
160 | .name = "YUV 4:2:0 Planar", | |
161 | .fourcc = V4L2_PIX_FMT_YUV420, | |
162 | .types = MEM2MEM_CAPTURE, | |
163 | }, | |
164 | { | |
165 | .name = "4:2:2, packed, YUYV", | |
166 | .fourcc = V4L2_PIX_FMT_YUYV, | |
167 | .types = MEM2MEM_OUTPUT, | |
168 | }, | |
169 | }; | |
170 | ||
171 | /* Per-queue, driver-specific private data */ | |
172 | struct emmaprp_q_data { | |
173 | unsigned int width; | |
174 | unsigned int height; | |
175 | unsigned int sizeimage; | |
176 | struct emmaprp_fmt *fmt; | |
177 | }; | |
178 | ||
179 | enum { | |
180 | V4L2_M2M_SRC = 0, | |
181 | V4L2_M2M_DST = 1, | |
182 | }; | |
183 | ||
184 | #define NUM_FORMATS ARRAY_SIZE(formats) | |
185 | ||
186 | static struct emmaprp_fmt *find_format(struct v4l2_format *f) | |
187 | { | |
188 | struct emmaprp_fmt *fmt; | |
189 | unsigned int k; | |
190 | ||
191 | for (k = 0; k < NUM_FORMATS; k++) { | |
192 | fmt = &formats[k]; | |
193 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
194 | break; | |
195 | } | |
196 | ||
197 | if (k == NUM_FORMATS) | |
198 | return NULL; | |
199 | ||
200 | return &formats[k]; | |
201 | } | |
202 | ||
203 | struct emmaprp_dev { | |
204 | struct v4l2_device v4l2_dev; | |
205 | struct video_device *vfd; | |
206 | ||
207 | struct mutex dev_mutex; | |
208 | spinlock_t irqlock; | |
209 | ||
8091cb7d | 210 | void __iomem *base_emma; |
33eb46a7 | 211 | struct clk *clk_emma_ahb, *clk_emma_ipg; |
8091cb7d JM |
212 | |
213 | struct v4l2_m2m_dev *m2m_dev; | |
8091cb7d JM |
214 | }; |
215 | ||
216 | struct emmaprp_ctx { | |
217 | struct emmaprp_dev *dev; | |
218 | /* Abort requested by m2m */ | |
219 | int aborting; | |
220 | struct emmaprp_q_data q_data[2]; | |
221 | struct v4l2_m2m_ctx *m2m_ctx; | |
222 | }; | |
223 | ||
224 | static struct emmaprp_q_data *get_q_data(struct emmaprp_ctx *ctx, | |
225 | enum v4l2_buf_type type) | |
226 | { | |
227 | switch (type) { | |
228 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
229 | return &(ctx->q_data[V4L2_M2M_SRC]); | |
230 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
231 | return &(ctx->q_data[V4L2_M2M_DST]); | |
232 | default: | |
233 | BUG(); | |
234 | } | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | /* | |
239 | * mem2mem callbacks | |
240 | */ | |
241 | static void emmaprp_job_abort(void *priv) | |
242 | { | |
243 | struct emmaprp_ctx *ctx = priv; | |
244 | struct emmaprp_dev *pcdev = ctx->dev; | |
245 | ||
246 | ctx->aborting = 1; | |
247 | ||
248 | dprintk(pcdev, "Aborting task\n"); | |
249 | ||
250 | v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->m2m_ctx); | |
251 | } | |
252 | ||
8091cb7d JM |
253 | static inline void emmaprp_dump_regs(struct emmaprp_dev *pcdev) |
254 | { | |
255 | dprintk(pcdev, | |
256 | "eMMa-PrP Registers:\n" | |
257 | " SOURCE_Y_PTR = 0x%08X\n" | |
258 | " SRC_FRAME_SIZE = 0x%08X\n" | |
259 | " DEST_Y_PTR = 0x%08X\n" | |
260 | " DEST_CR_PTR = 0x%08X\n" | |
261 | " DEST_CB_PTR = 0x%08X\n" | |
262 | " CH2_OUT_IMAGE_SIZE = 0x%08X\n" | |
263 | " CNTL = 0x%08X\n", | |
264 | readl(pcdev->base_emma + PRP_SOURCE_Y_PTR), | |
265 | readl(pcdev->base_emma + PRP_SRC_FRAME_SIZE), | |
266 | readl(pcdev->base_emma + PRP_DEST_Y_PTR), | |
267 | readl(pcdev->base_emma + PRP_DEST_CR_PTR), | |
268 | readl(pcdev->base_emma + PRP_DEST_CB_PTR), | |
269 | readl(pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE), | |
270 | readl(pcdev->base_emma + PRP_CNTL)); | |
271 | } | |
272 | ||
273 | static void emmaprp_device_run(void *priv) | |
274 | { | |
275 | struct emmaprp_ctx *ctx = priv; | |
276 | struct emmaprp_q_data *s_q_data, *d_q_data; | |
277 | struct vb2_buffer *src_buf, *dst_buf; | |
278 | struct emmaprp_dev *pcdev = ctx->dev; | |
279 | unsigned int s_width, s_height; | |
280 | unsigned int d_width, d_height; | |
281 | unsigned int d_size; | |
282 | dma_addr_t p_in, p_out; | |
283 | u32 tmp; | |
284 | ||
285 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
286 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
287 | ||
288 | s_q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); | |
289 | s_width = s_q_data->width; | |
290 | s_height = s_q_data->height; | |
291 | ||
292 | d_q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
293 | d_width = d_q_data->width; | |
294 | d_height = d_q_data->height; | |
295 | d_size = d_width * d_height; | |
296 | ||
297 | p_in = vb2_dma_contig_plane_dma_addr(src_buf, 0); | |
298 | p_out = vb2_dma_contig_plane_dma_addr(dst_buf, 0); | |
299 | if (!p_in || !p_out) { | |
300 | v4l2_err(&pcdev->v4l2_dev, | |
301 | "Acquiring kernel pointers to buffers failed\n"); | |
302 | return; | |
303 | } | |
304 | ||
305 | /* Input frame parameters */ | |
306 | writel(p_in, pcdev->base_emma + PRP_SOURCE_Y_PTR); | |
307 | writel(PRP_SIZE_WIDTH(s_width) | PRP_SIZE_HEIGHT(s_height), | |
308 | pcdev->base_emma + PRP_SRC_FRAME_SIZE); | |
309 | ||
310 | /* Output frame parameters */ | |
311 | writel(p_out, pcdev->base_emma + PRP_DEST_Y_PTR); | |
312 | writel(p_out + d_size, pcdev->base_emma + PRP_DEST_CB_PTR); | |
313 | writel(p_out + d_size + (d_size >> 2), | |
314 | pcdev->base_emma + PRP_DEST_CR_PTR); | |
315 | writel(PRP_SIZE_WIDTH(d_width) | PRP_SIZE_HEIGHT(d_height), | |
316 | pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); | |
317 | ||
318 | /* IRQ configuration */ | |
319 | tmp = readl(pcdev->base_emma + PRP_INTR_CNTL); | |
320 | writel(tmp | PRP_INTR_RDERR | | |
321 | PRP_INTR_CH2WERR | | |
322 | PRP_INTR_CH2FC, | |
323 | pcdev->base_emma + PRP_INTR_CNTL); | |
324 | ||
325 | emmaprp_dump_regs(pcdev); | |
326 | ||
327 | /* Enable transfer */ | |
328 | tmp = readl(pcdev->base_emma + PRP_CNTL); | |
329 | writel(tmp | PRP_CNTL_CH2_OUT_YUV420 | | |
330 | PRP_CNTL_DATA_IN_YUV422 | | |
331 | PRP_CNTL_CH2EN, | |
332 | pcdev->base_emma + PRP_CNTL); | |
333 | } | |
334 | ||
335 | static irqreturn_t emmaprp_irq(int irq_emma, void *data) | |
336 | { | |
337 | struct emmaprp_dev *pcdev = data; | |
338 | struct emmaprp_ctx *curr_ctx; | |
2d700715 | 339 | struct vb2_v4l2_buffer *src_vb, *dst_vb; |
8091cb7d JM |
340 | unsigned long flags; |
341 | u32 irqst; | |
342 | ||
343 | /* Check irq flags and clear irq */ | |
344 | irqst = readl(pcdev->base_emma + PRP_INTRSTATUS); | |
345 | writel(irqst, pcdev->base_emma + PRP_INTRSTATUS); | |
346 | dprintk(pcdev, "irqst = 0x%08x\n", irqst); | |
347 | ||
348 | curr_ctx = v4l2_m2m_get_curr_priv(pcdev->m2m_dev); | |
349 | if (curr_ctx == NULL) { | |
350 | pr_err("Instance released before the end of transaction\n"); | |
351 | return IRQ_HANDLED; | |
352 | } | |
353 | ||
354 | if (!curr_ctx->aborting) { | |
355 | if ((irqst & PRP_INTR_ST_RDERR) || | |
356 | (irqst & PRP_INTR_ST_CH2WERR)) { | |
9c768207 | 357 | pr_err("PrP bus error occurred, this transfer is probably corrupted\n"); |
8091cb7d JM |
358 | writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); |
359 | } else if (irqst & PRP_INTR_ST_CH2B1CI) { /* buffer ready */ | |
360 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); | |
361 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
362 | ||
d6dd645e | 363 | dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; |
2d700715 | 364 | dst_vb->flags &= |
309f4d62 | 365 | ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
2d700715 JS |
366 | dst_vb->flags |= |
367 | src_vb->flags | |
309f4d62 | 368 | & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
2d700715 | 369 | dst_vb->timecode = src_vb->timecode; |
a8c9c345 | 370 | |
8091cb7d JM |
371 | spin_lock_irqsave(&pcdev->irqlock, flags); |
372 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
373 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
374 | spin_unlock_irqrestore(&pcdev->irqlock, flags); | |
375 | } | |
376 | } | |
377 | ||
378 | v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->m2m_ctx); | |
379 | return IRQ_HANDLED; | |
380 | } | |
381 | ||
382 | /* | |
383 | * video ioctls | |
384 | */ | |
385 | static int vidioc_querycap(struct file *file, void *priv, | |
386 | struct v4l2_capability *cap) | |
387 | { | |
388 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
389 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
a020c747 HV |
390 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
391 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
8091cb7d JM |
392 | return 0; |
393 | } | |
394 | ||
395 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
396 | { | |
397 | int i, num; | |
398 | struct emmaprp_fmt *fmt; | |
399 | ||
400 | num = 0; | |
401 | ||
402 | for (i = 0; i < NUM_FORMATS; ++i) { | |
403 | if (formats[i].types & type) { | |
404 | /* index-th format of type type found ? */ | |
405 | if (num == f->index) | |
406 | break; | |
407 | /* Correct type but haven't reached our index yet, | |
408 | * just increment per-type index */ | |
409 | ++num; | |
410 | } | |
411 | } | |
412 | ||
413 | if (i < NUM_FORMATS) { | |
414 | /* Format found */ | |
415 | fmt = &formats[i]; | |
c0decac1 | 416 | strscpy(f->description, fmt->name, sizeof(f->description) - 1); |
8091cb7d JM |
417 | f->pixelformat = fmt->fourcc; |
418 | return 0; | |
419 | } | |
420 | ||
421 | /* Format not found */ | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
426 | struct v4l2_fmtdesc *f) | |
427 | { | |
428 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
429 | } | |
430 | ||
431 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
432 | struct v4l2_fmtdesc *f) | |
433 | { | |
434 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
435 | } | |
436 | ||
437 | static int vidioc_g_fmt(struct emmaprp_ctx *ctx, struct v4l2_format *f) | |
438 | { | |
439 | struct vb2_queue *vq; | |
440 | struct emmaprp_q_data *q_data; | |
441 | ||
442 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
443 | if (!vq) | |
444 | return -EINVAL; | |
445 | ||
446 | q_data = get_q_data(ctx, f->type); | |
447 | ||
448 | f->fmt.pix.width = q_data->width; | |
449 | f->fmt.pix.height = q_data->height; | |
450 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
451 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; | |
452 | if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) | |
453 | f->fmt.pix.bytesperline = q_data->width * 3 / 2; | |
454 | else /* YUYV */ | |
455 | f->fmt.pix.bytesperline = q_data->width * 2; | |
456 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
462 | struct v4l2_format *f) | |
463 | { | |
464 | return vidioc_g_fmt(priv, f); | |
465 | } | |
466 | ||
467 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
468 | struct v4l2_format *f) | |
469 | { | |
470 | return vidioc_g_fmt(priv, f); | |
471 | } | |
472 | ||
473 | static int vidioc_try_fmt(struct v4l2_format *f) | |
474 | { | |
475 | enum v4l2_field field; | |
476 | ||
477 | ||
478 | if (!find_format(f)) | |
479 | return -EINVAL; | |
480 | ||
481 | field = f->fmt.pix.field; | |
482 | if (field == V4L2_FIELD_ANY) | |
483 | field = V4L2_FIELD_NONE; | |
484 | else if (V4L2_FIELD_NONE != field) | |
485 | return -EINVAL; | |
486 | ||
487 | /* V4L2 specification suggests the driver corrects the format struct | |
488 | * if any of the dimensions is unsupported */ | |
489 | f->fmt.pix.field = field; | |
490 | ||
491 | if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) { | |
492 | v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, | |
493 | W_ALIGN_YUV420, &f->fmt.pix.height, | |
494 | MIN_H, MAX_H, H_ALIGN, S_ALIGN); | |
495 | f->fmt.pix.bytesperline = f->fmt.pix.width * 3 / 2; | |
496 | } else { | |
497 | v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, | |
498 | W_ALIGN_OTHERS, &f->fmt.pix.height, | |
499 | MIN_H, MAX_H, H_ALIGN, S_ALIGN); | |
500 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
501 | } | |
502 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
508 | struct v4l2_format *f) | |
509 | { | |
510 | struct emmaprp_fmt *fmt; | |
511 | struct emmaprp_ctx *ctx = priv; | |
512 | ||
513 | fmt = find_format(f); | |
514 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
515 | v4l2_err(&ctx->dev->v4l2_dev, | |
516 | "Fourcc format (0x%08x) invalid.\n", | |
517 | f->fmt.pix.pixelformat); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
521 | return vidioc_try_fmt(f); | |
522 | } | |
523 | ||
524 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
525 | struct v4l2_format *f) | |
526 | { | |
527 | struct emmaprp_fmt *fmt; | |
528 | struct emmaprp_ctx *ctx = priv; | |
529 | ||
530 | fmt = find_format(f); | |
531 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
532 | v4l2_err(&ctx->dev->v4l2_dev, | |
533 | "Fourcc format (0x%08x) invalid.\n", | |
534 | f->fmt.pix.pixelformat); | |
535 | return -EINVAL; | |
536 | } | |
537 | ||
538 | return vidioc_try_fmt(f); | |
539 | } | |
540 | ||
541 | static int vidioc_s_fmt(struct emmaprp_ctx *ctx, struct v4l2_format *f) | |
542 | { | |
543 | struct emmaprp_q_data *q_data; | |
544 | struct vb2_queue *vq; | |
545 | int ret; | |
546 | ||
547 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
548 | if (!vq) | |
549 | return -EINVAL; | |
550 | ||
551 | q_data = get_q_data(ctx, f->type); | |
552 | if (!q_data) | |
553 | return -EINVAL; | |
554 | ||
555 | if (vb2_is_busy(vq)) { | |
556 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); | |
557 | return -EBUSY; | |
558 | } | |
559 | ||
560 | ret = vidioc_try_fmt(f); | |
561 | if (ret) | |
562 | return ret; | |
563 | ||
564 | q_data->fmt = find_format(f); | |
565 | q_data->width = f->fmt.pix.width; | |
566 | q_data->height = f->fmt.pix.height; | |
567 | if (q_data->fmt->fourcc == V4L2_PIX_FMT_YUV420) | |
568 | q_data->sizeimage = q_data->width * q_data->height * 3 / 2; | |
569 | else /* YUYV */ | |
570 | q_data->sizeimage = q_data->width * q_data->height * 2; | |
571 | ||
572 | dprintk(ctx->dev, | |
573 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
574 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
580 | struct v4l2_format *f) | |
581 | { | |
582 | int ret; | |
583 | ||
584 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
585 | if (ret) | |
586 | return ret; | |
587 | ||
588 | return vidioc_s_fmt(priv, f); | |
589 | } | |
590 | ||
591 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
592 | struct v4l2_format *f) | |
593 | { | |
594 | int ret; | |
595 | ||
596 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
597 | if (ret) | |
598 | return ret; | |
599 | ||
600 | return vidioc_s_fmt(priv, f); | |
601 | } | |
602 | ||
603 | static int vidioc_reqbufs(struct file *file, void *priv, | |
604 | struct v4l2_requestbuffers *reqbufs) | |
605 | { | |
606 | struct emmaprp_ctx *ctx = priv; | |
607 | ||
608 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
609 | } | |
610 | ||
611 | static int vidioc_querybuf(struct file *file, void *priv, | |
612 | struct v4l2_buffer *buf) | |
613 | { | |
614 | struct emmaprp_ctx *ctx = priv; | |
615 | ||
616 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
617 | } | |
618 | ||
619 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
620 | { | |
621 | struct emmaprp_ctx *ctx = priv; | |
622 | ||
623 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
624 | } | |
625 | ||
626 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
627 | { | |
628 | struct emmaprp_ctx *ctx = priv; | |
629 | ||
630 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
631 | } | |
632 | ||
633 | static int vidioc_streamon(struct file *file, void *priv, | |
634 | enum v4l2_buf_type type) | |
635 | { | |
636 | struct emmaprp_ctx *ctx = priv; | |
637 | ||
638 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
639 | } | |
640 | ||
641 | static int vidioc_streamoff(struct file *file, void *priv, | |
642 | enum v4l2_buf_type type) | |
643 | { | |
644 | struct emmaprp_ctx *ctx = priv; | |
645 | ||
646 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
647 | } | |
648 | ||
649 | static const struct v4l2_ioctl_ops emmaprp_ioctl_ops = { | |
650 | .vidioc_querycap = vidioc_querycap, | |
651 | ||
652 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
653 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
654 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
655 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
656 | ||
657 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
658 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
659 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
660 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
661 | ||
662 | .vidioc_reqbufs = vidioc_reqbufs, | |
663 | .vidioc_querybuf = vidioc_querybuf, | |
664 | ||
665 | .vidioc_qbuf = vidioc_qbuf, | |
666 | .vidioc_dqbuf = vidioc_dqbuf, | |
667 | ||
668 | .vidioc_streamon = vidioc_streamon, | |
669 | .vidioc_streamoff = vidioc_streamoff, | |
670 | }; | |
671 | ||
672 | ||
673 | /* | |
674 | * Queue operations | |
675 | */ | |
676 | static int emmaprp_queue_setup(struct vb2_queue *vq, | |
8091cb7d | 677 | unsigned int *nbuffers, unsigned int *nplanes, |
36c0f8b3 | 678 | unsigned int sizes[], struct device *alloc_devs[]) |
8091cb7d JM |
679 | { |
680 | struct emmaprp_ctx *ctx = vb2_get_drv_priv(vq); | |
681 | struct emmaprp_q_data *q_data; | |
682 | unsigned int size, count = *nbuffers; | |
683 | ||
684 | q_data = get_q_data(ctx, vq->type); | |
685 | ||
686 | if (q_data->fmt->fourcc == V4L2_PIX_FMT_YUV420) | |
687 | size = q_data->width * q_data->height * 3 / 2; | |
688 | else | |
689 | size = q_data->width * q_data->height * 2; | |
690 | ||
691 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
692 | (count)--; | |
693 | ||
694 | *nplanes = 1; | |
695 | *nbuffers = count; | |
696 | sizes[0] = size; | |
697 | ||
8091cb7d JM |
698 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int emmaprp_buf_prepare(struct vb2_buffer *vb) | |
704 | { | |
705 | struct emmaprp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
706 | struct emmaprp_q_data *q_data; | |
707 | ||
708 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); | |
709 | ||
710 | q_data = get_q_data(ctx, vb->vb2_queue->type); | |
711 | ||
712 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { | |
759a4ed4 MCC |
713 | dprintk(ctx->dev, |
714 | "%s data will not fit into plane(%lu < %lu)\n", | |
715 | __func__, vb2_plane_size(vb, 0), | |
716 | (long)q_data->sizeimage); | |
8091cb7d JM |
717 | return -EINVAL; |
718 | } | |
719 | ||
720 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); | |
721 | ||
722 | return 0; | |
723 | } | |
724 | ||
725 | static void emmaprp_buf_queue(struct vb2_buffer *vb) | |
726 | { | |
2d700715 | 727 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
8091cb7d | 728 | struct emmaprp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
2d700715 | 729 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf); |
8091cb7d JM |
730 | } |
731 | ||
b7b361f0 | 732 | static const struct vb2_ops emmaprp_qops = { |
8091cb7d JM |
733 | .queue_setup = emmaprp_queue_setup, |
734 | .buf_prepare = emmaprp_buf_prepare, | |
735 | .buf_queue = emmaprp_buf_queue, | |
a4273abc EG |
736 | .wait_prepare = vb2_ops_wait_prepare, |
737 | .wait_finish = vb2_ops_wait_finish, | |
8091cb7d JM |
738 | }; |
739 | ||
740 | static int queue_init(void *priv, struct vb2_queue *src_vq, | |
741 | struct vb2_queue *dst_vq) | |
742 | { | |
743 | struct emmaprp_ctx *ctx = priv; | |
744 | int ret; | |
745 | ||
8091cb7d | 746 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
28638601 | 747 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
8091cb7d JM |
748 | src_vq->drv_priv = ctx; |
749 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
750 | src_vq->ops = &emmaprp_qops; | |
751 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
ade48681 | 752 | src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
1ad70ced | 753 | src_vq->dev = ctx->dev->v4l2_dev.dev; |
a4273abc | 754 | src_vq->lock = &ctx->dev->dev_mutex; |
8091cb7d JM |
755 | |
756 | ret = vb2_queue_init(src_vq); | |
757 | if (ret) | |
758 | return ret; | |
759 | ||
8091cb7d | 760 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
28638601 | 761 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
8091cb7d JM |
762 | dst_vq->drv_priv = ctx; |
763 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
764 | dst_vq->ops = &emmaprp_qops; | |
765 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
ade48681 | 766 | dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
1ad70ced | 767 | dst_vq->dev = ctx->dev->v4l2_dev.dev; |
a4273abc | 768 | dst_vq->lock = &ctx->dev->dev_mutex; |
8091cb7d JM |
769 | |
770 | return vb2_queue_init(dst_vq); | |
771 | } | |
772 | ||
773 | /* | |
774 | * File operations | |
775 | */ | |
776 | static int emmaprp_open(struct file *file) | |
777 | { | |
778 | struct emmaprp_dev *pcdev = video_drvdata(file); | |
779 | struct emmaprp_ctx *ctx; | |
780 | ||
781 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
782 | if (!ctx) | |
783 | return -ENOMEM; | |
784 | ||
785 | file->private_data = ctx; | |
786 | ctx->dev = pcdev; | |
787 | ||
954f5bcb HV |
788 | if (mutex_lock_interruptible(&pcdev->dev_mutex)) { |
789 | kfree(ctx); | |
790 | return -ERESTARTSYS; | |
791 | } | |
792 | ||
8091cb7d JM |
793 | ctx->m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init); |
794 | ||
795 | if (IS_ERR(ctx->m2m_ctx)) { | |
796 | int ret = PTR_ERR(ctx->m2m_ctx); | |
797 | ||
954f5bcb | 798 | mutex_unlock(&pcdev->dev_mutex); |
8091cb7d JM |
799 | kfree(ctx); |
800 | return ret; | |
801 | } | |
802 | ||
33eb46a7 JM |
803 | clk_prepare_enable(pcdev->clk_emma_ipg); |
804 | clk_prepare_enable(pcdev->clk_emma_ahb); | |
8091cb7d JM |
805 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[1]; |
806 | ctx->q_data[V4L2_M2M_DST].fmt = &formats[0]; | |
954f5bcb | 807 | mutex_unlock(&pcdev->dev_mutex); |
8091cb7d JM |
808 | |
809 | dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | static int emmaprp_release(struct file *file) | |
815 | { | |
816 | struct emmaprp_dev *pcdev = video_drvdata(file); | |
817 | struct emmaprp_ctx *ctx = file->private_data; | |
818 | ||
819 | dprintk(pcdev, "Releasing instance %p\n", ctx); | |
820 | ||
954f5bcb | 821 | mutex_lock(&pcdev->dev_mutex); |
33eb46a7 JM |
822 | clk_disable_unprepare(pcdev->clk_emma_ahb); |
823 | clk_disable_unprepare(pcdev->clk_emma_ipg); | |
8091cb7d | 824 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
954f5bcb | 825 | mutex_unlock(&pcdev->dev_mutex); |
8091cb7d JM |
826 | kfree(ctx); |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
c23e0cb8 | 831 | static __poll_t emmaprp_poll(struct file *file, |
8091cb7d JM |
832 | struct poll_table_struct *wait) |
833 | { | |
954f5bcb | 834 | struct emmaprp_dev *pcdev = video_drvdata(file); |
8091cb7d | 835 | struct emmaprp_ctx *ctx = file->private_data; |
c23e0cb8 | 836 | __poll_t res; |
8091cb7d | 837 | |
954f5bcb HV |
838 | mutex_lock(&pcdev->dev_mutex); |
839 | res = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
840 | mutex_unlock(&pcdev->dev_mutex); | |
841 | return res; | |
8091cb7d JM |
842 | } |
843 | ||
844 | static int emmaprp_mmap(struct file *file, struct vm_area_struct *vma) | |
845 | { | |
954f5bcb | 846 | struct emmaprp_dev *pcdev = video_drvdata(file); |
8091cb7d | 847 | struct emmaprp_ctx *ctx = file->private_data; |
954f5bcb | 848 | int ret; |
8091cb7d | 849 | |
954f5bcb HV |
850 | if (mutex_lock_interruptible(&pcdev->dev_mutex)) |
851 | return -ERESTARTSYS; | |
852 | ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
853 | mutex_unlock(&pcdev->dev_mutex); | |
854 | return ret; | |
8091cb7d JM |
855 | } |
856 | ||
857 | static const struct v4l2_file_operations emmaprp_fops = { | |
858 | .owner = THIS_MODULE, | |
859 | .open = emmaprp_open, | |
860 | .release = emmaprp_release, | |
861 | .poll = emmaprp_poll, | |
862 | .unlocked_ioctl = video_ioctl2, | |
863 | .mmap = emmaprp_mmap, | |
864 | }; | |
865 | ||
5303135c | 866 | static const struct video_device emmaprp_videodev = { |
8091cb7d JM |
867 | .name = MEM2MEM_NAME, |
868 | .fops = &emmaprp_fops, | |
869 | .ioctl_ops = &emmaprp_ioctl_ops, | |
870 | .minor = -1, | |
871 | .release = video_device_release, | |
954f340f | 872 | .vfl_dir = VFL_DIR_M2M, |
8091cb7d JM |
873 | }; |
874 | ||
c3f6ddfe | 875 | static const struct v4l2_m2m_ops m2m_ops = { |
8091cb7d JM |
876 | .device_run = emmaprp_device_run, |
877 | .job_abort = emmaprp_job_abort, | |
8091cb7d JM |
878 | }; |
879 | ||
880 | static int emmaprp_probe(struct platform_device *pdev) | |
881 | { | |
882 | struct emmaprp_dev *pcdev; | |
883 | struct video_device *vfd; | |
b97a6216 AS |
884 | struct resource *res; |
885 | int irq, ret; | |
8091cb7d | 886 | |
d1bb4b29 | 887 | pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); |
8091cb7d JM |
888 | if (!pcdev) |
889 | return -ENOMEM; | |
890 | ||
891 | spin_lock_init(&pcdev->irqlock); | |
892 | ||
33eb46a7 JM |
893 | pcdev->clk_emma_ipg = devm_clk_get(&pdev->dev, "ipg"); |
894 | if (IS_ERR(pcdev->clk_emma_ipg)) { | |
d1bb4b29 | 895 | return PTR_ERR(pcdev->clk_emma_ipg); |
33eb46a7 JM |
896 | } |
897 | ||
898 | pcdev->clk_emma_ahb = devm_clk_get(&pdev->dev, "ahb"); | |
9f9831a8 | 899 | if (IS_ERR(pcdev->clk_emma_ahb)) |
d1bb4b29 | 900 | return PTR_ERR(pcdev->clk_emma_ahb); |
8091cb7d | 901 | |
b97a6216 AS |
902 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
903 | pcdev->base_emma = devm_ioremap_resource(&pdev->dev, res); | |
904 | if (IS_ERR(pcdev->base_emma)) | |
905 | return PTR_ERR(pcdev->base_emma); | |
8091cb7d JM |
906 | |
907 | ret = v4l2_device_register(&pdev->dev, &pcdev->v4l2_dev); | |
908 | if (ret) | |
d1bb4b29 | 909 | return ret; |
8091cb7d JM |
910 | |
911 | mutex_init(&pcdev->dev_mutex); | |
912 | ||
913 | vfd = video_device_alloc(); | |
914 | if (!vfd) { | |
915 | v4l2_err(&pcdev->v4l2_dev, "Failed to allocate video device\n"); | |
916 | ret = -ENOMEM; | |
917 | goto unreg_dev; | |
918 | } | |
919 | ||
920 | *vfd = emmaprp_videodev; | |
921 | vfd->lock = &pcdev->dev_mutex; | |
8f484d87 | 922 | vfd->v4l2_dev = &pcdev->v4l2_dev; |
8091cb7d JM |
923 | |
924 | video_set_drvdata(vfd, pcdev); | |
8091cb7d JM |
925 | pcdev->vfd = vfd; |
926 | v4l2_info(&pcdev->v4l2_dev, EMMAPRP_MODULE_NAME | |
759a4ed4 | 927 | " Device registered as /dev/video%d\n", vfd->num); |
8091cb7d JM |
928 | |
929 | platform_set_drvdata(pdev, pcdev); | |
930 | ||
b97a6216 | 931 | irq = platform_get_irq(pdev, 0); |
d4e192cc FE |
932 | if (irq < 0) |
933 | return irq; | |
b97a6216 AS |
934 | ret = devm_request_irq(&pdev->dev, irq, emmaprp_irq, 0, |
935 | dev_name(&pdev->dev), pcdev); | |
936 | if (ret) | |
8091cb7d JM |
937 | goto rel_vdev; |
938 | ||
8091cb7d JM |
939 | pcdev->m2m_dev = v4l2_m2m_init(&m2m_ops); |
940 | if (IS_ERR(pcdev->m2m_dev)) { | |
941 | v4l2_err(&pcdev->v4l2_dev, "Failed to init mem2mem device\n"); | |
942 | ret = PTR_ERR(pcdev->m2m_dev); | |
1ad70ced | 943 | goto rel_vdev; |
8091cb7d JM |
944 | } |
945 | ||
946 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
947 | if (ret) { | |
948 | v4l2_err(&pcdev->v4l2_dev, "Failed to register video device\n"); | |
949 | goto rel_m2m; | |
950 | } | |
951 | ||
952 | return 0; | |
953 | ||
954 | ||
955 | rel_m2m: | |
956 | v4l2_m2m_release(pcdev->m2m_dev); | |
8091cb7d JM |
957 | rel_vdev: |
958 | video_device_release(vfd); | |
959 | unreg_dev: | |
960 | v4l2_device_unregister(&pcdev->v4l2_dev); | |
8091cb7d | 961 | |
d98f1b78 AS |
962 | mutex_destroy(&pcdev->dev_mutex); |
963 | ||
8091cb7d JM |
964 | return ret; |
965 | } | |
966 | ||
967 | static int emmaprp_remove(struct platform_device *pdev) | |
968 | { | |
969 | struct emmaprp_dev *pcdev = platform_get_drvdata(pdev); | |
970 | ||
971 | v4l2_info(&pcdev->v4l2_dev, "Removing " EMMAPRP_MODULE_NAME); | |
972 | ||
973 | video_unregister_device(pcdev->vfd); | |
974 | v4l2_m2m_release(pcdev->m2m_dev); | |
8091cb7d | 975 | v4l2_device_unregister(&pcdev->v4l2_dev); |
d98f1b78 | 976 | mutex_destroy(&pcdev->dev_mutex); |
8091cb7d JM |
977 | |
978 | return 0; | |
979 | } | |
980 | ||
981 | static struct platform_driver emmaprp_pdrv = { | |
982 | .probe = emmaprp_probe, | |
983 | .remove = emmaprp_remove, | |
984 | .driver = { | |
985 | .name = MEM2MEM_NAME, | |
8091cb7d JM |
986 | }, |
987 | }; | |
0e368f30 | 988 | module_platform_driver(emmaprp_pdrv); |