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73135e96 VB |
1 | /* |
2 | * SoC-camera host driver for Renesas R-Car VIN unit | |
3 | * | |
4 | * Copyright (C) 2011-2013 Renesas Solutions Corp. | |
5 | * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com> | |
6 | * | |
7 | * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c" | |
8 | * | |
9 | * Copyright (C) 2008 Magnus Damm | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/delay.h> | |
18 | #include <linux/interrupt.h> | |
3cdcf736 | 19 | #include <linux/io.h> |
73135e96 VB |
20 | #include <linux/kernel.h> |
21 | #include <linux/module.h> | |
47c71bd6 BD |
22 | #include <linux/of.h> |
23 | #include <linux/of_device.h> | |
73135e96 VB |
24 | #include <linux/platform_data/camera-rcar.h> |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/pm_runtime.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/videodev2.h> | |
29 | ||
30 | #include <media/soc_camera.h> | |
31 | #include <media/soc_mediabus.h> | |
32 | #include <media/v4l2-common.h> | |
33 | #include <media/v4l2-dev.h> | |
34 | #include <media/v4l2-device.h> | |
35 | #include <media/v4l2-mediabus.h> | |
47c71bd6 | 36 | #include <media/v4l2-of.h> |
73135e96 VB |
37 | #include <media/v4l2-subdev.h> |
38 | #include <media/videobuf2-dma-contig.h> | |
39 | ||
40 | #include "soc_scale_crop.h" | |
41 | ||
42 | #define DRV_NAME "rcar_vin" | |
43 | ||
44 | /* Register offsets for R-Car VIN */ | |
45 | #define VNMC_REG 0x00 /* Video n Main Control Register */ | |
46 | #define VNMS_REG 0x04 /* Video n Module Status Register */ | |
47 | #define VNFC_REG 0x08 /* Video n Frame Capture Register */ | |
48 | #define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */ | |
49 | #define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */ | |
50 | #define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */ | |
51 | #define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */ | |
52 | #define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */ | |
53 | #define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */ | |
54 | #define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */ | |
55 | #define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */ | |
56 | #define VNIS_REG 0x2C /* Video n Image Stride Register */ | |
57 | #define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */ | |
58 | #define VNIE_REG 0x40 /* Video n Interrupt Enable Register */ | |
59 | #define VNINTS_REG 0x44 /* Video n Interrupt Status Register */ | |
60 | #define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */ | |
61 | #define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */ | |
62 | #define VNYS_REG 0x50 /* Video n Y Scale Register */ | |
63 | #define VNXS_REG 0x54 /* Video n X Scale Register */ | |
64 | #define VNDMR_REG 0x58 /* Video n Data Mode Register */ | |
65 | #define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */ | |
66 | #define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */ | |
67 | ||
68 | /* Register bit fields for R-Car VIN */ | |
69 | /* Video n Main Control Register bits */ | |
70 | #define VNMC_FOC (1 << 21) | |
71 | #define VNMC_YCAL (1 << 19) | |
72 | #define VNMC_INF_YUV8_BT656 (0 << 16) | |
73 | #define VNMC_INF_YUV8_BT601 (1 << 16) | |
cbe504d4 PE |
74 | #define VNMC_INF_YUV10_BT656 (2 << 16) |
75 | #define VNMC_INF_YUV10_BT601 (3 << 16) | |
73135e96 VB |
76 | #define VNMC_INF_YUV16 (5 << 16) |
77 | #define VNMC_VUP (1 << 10) | |
78 | #define VNMC_IM_ODD (0 << 3) | |
79 | #define VNMC_IM_ODD_EVEN (1 << 3) | |
80 | #define VNMC_IM_EVEN (2 << 3) | |
81 | #define VNMC_IM_FULL (3 << 3) | |
82 | #define VNMC_BPS (1 << 1) | |
83 | #define VNMC_ME (1 << 0) | |
84 | ||
85 | /* Video n Module Status Register bits */ | |
86 | #define VNMS_FBS_MASK (3 << 3) | |
87 | #define VNMS_FBS_SHIFT 3 | |
88 | #define VNMS_AV (1 << 1) | |
89 | #define VNMS_CA (1 << 0) | |
90 | ||
91 | /* Video n Frame Capture Register bits */ | |
92 | #define VNFC_C_FRAME (1 << 1) | |
93 | #define VNFC_S_FRAME (1 << 0) | |
94 | ||
95 | /* Video n Interrupt Enable Register bits */ | |
96 | #define VNIE_FIE (1 << 4) | |
97 | #define VNIE_EFE (1 << 1) | |
98 | ||
99 | /* Video n Data Mode Register bits */ | |
100 | #define VNDMR_EXRGB (1 << 8) | |
101 | #define VNDMR_BPSM (1 << 4) | |
102 | #define VNDMR_DTMD_YCSEP (1 << 1) | |
103 | #define VNDMR_DTMD_ARGB1555 (1 << 0) | |
104 | ||
105 | /* Video n Data Mode Register 2 bits */ | |
106 | #define VNDMR2_VPS (1 << 30) | |
107 | #define VNDMR2_HPS (1 << 29) | |
108 | #define VNDMR2_FTEV (1 << 17) | |
109 | ||
110 | #define VIN_MAX_WIDTH 2048 | |
111 | #define VIN_MAX_HEIGHT 2048 | |
112 | ||
113 | enum chip_id { | |
2a9ecc17 | 114 | RCAR_GEN2, |
73135e96 VB |
115 | RCAR_H1, |
116 | RCAR_M1, | |
117 | RCAR_E1, | |
118 | }; | |
119 | ||
120 | enum rcar_vin_state { | |
121 | STOPPED = 0, | |
122 | RUNNING, | |
123 | STOPPING, | |
124 | }; | |
125 | ||
126 | struct rcar_vin_priv { | |
127 | void __iomem *base; | |
128 | spinlock_t lock; | |
129 | int sequence; | |
130 | /* State of the VIN module in capturing mode */ | |
131 | enum rcar_vin_state state; | |
73135e96 VB |
132 | struct soc_camera_host ici; |
133 | struct list_head capture; | |
134 | #define MAX_BUFFER_NUM 3 | |
135 | struct vb2_buffer *queue_buf[MAX_BUFFER_NUM]; | |
136 | struct vb2_alloc_ctx *alloc_ctx; | |
137 | enum v4l2_field field; | |
25dfa02c | 138 | unsigned int pdata_flags; |
73135e96 VB |
139 | unsigned int vb_count; |
140 | unsigned int nr_hw_slots; | |
141 | bool request_to_stop; | |
142 | struct completion capture_stop; | |
143 | enum chip_id chip; | |
144 | }; | |
145 | ||
146 | #define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM) | |
147 | ||
148 | struct rcar_vin_buffer { | |
149 | struct vb2_buffer vb; | |
150 | struct list_head list; | |
151 | }; | |
152 | ||
153 | #define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \ | |
154 | struct rcar_vin_buffer, \ | |
155 | vb)->list) | |
156 | ||
157 | struct rcar_vin_cam { | |
158 | /* VIN offsets within the camera output, before the VIN scaler */ | |
159 | unsigned int vin_left; | |
160 | unsigned int vin_top; | |
161 | /* Client output, as seen by the VIN */ | |
162 | unsigned int width; | |
163 | unsigned int height; | |
164 | /* | |
165 | * User window from S_CROP / G_CROP, produced by client cropping and | |
166 | * scaling, VIN scaling and VIN cropping, mapped back onto the client | |
167 | * input window | |
168 | */ | |
169 | struct v4l2_rect subrect; | |
170 | /* Camera cropping rectangle */ | |
171 | struct v4l2_rect rect; | |
172 | const struct soc_mbus_pixelfmt *extra_fmt; | |
173 | }; | |
174 | ||
175 | /* | |
176 | * .queue_setup() is called to check whether the driver can accept the requested | |
177 | * number of buffers and to fill in plane sizes for the current frame format if | |
178 | * required | |
179 | */ | |
180 | static int rcar_vin_videobuf_setup(struct vb2_queue *vq, | |
181 | const struct v4l2_format *fmt, | |
182 | unsigned int *count, | |
183 | unsigned int *num_planes, | |
184 | unsigned int sizes[], void *alloc_ctxs[]) | |
185 | { | |
186 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); | |
187 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
188 | struct rcar_vin_priv *priv = ici->priv; | |
189 | ||
190 | if (fmt) { | |
191 | const struct soc_camera_format_xlate *xlate; | |
192 | unsigned int bytes_per_line; | |
193 | int ret; | |
194 | ||
195 | xlate = soc_camera_xlate_by_fourcc(icd, | |
196 | fmt->fmt.pix.pixelformat); | |
197 | if (!xlate) | |
198 | return -EINVAL; | |
199 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, | |
200 | xlate->host_fmt); | |
201 | if (ret < 0) | |
202 | return ret; | |
203 | ||
204 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); | |
205 | ||
206 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, | |
207 | fmt->fmt.pix.height); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
211 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); | |
212 | } else { | |
213 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ | |
214 | sizes[0] = icd->sizeimage; | |
215 | } | |
216 | ||
217 | alloc_ctxs[0] = priv->alloc_ctx; | |
218 | ||
219 | if (!vq->num_buffers) | |
220 | priv->sequence = 0; | |
221 | ||
222 | if (!*count) | |
223 | *count = 2; | |
224 | priv->vb_count = *count; | |
225 | ||
226 | *num_planes = 1; | |
227 | ||
228 | /* Number of hardware slots */ | |
229 | if (is_continuous_transfer(priv)) | |
230 | priv->nr_hw_slots = MAX_BUFFER_NUM; | |
231 | else | |
232 | priv->nr_hw_slots = 1; | |
233 | ||
234 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static int rcar_vin_setup(struct rcar_vin_priv *priv) | |
240 | { | |
241 | struct soc_camera_device *icd = priv->ici.icd; | |
242 | struct rcar_vin_cam *cam = icd->host_priv; | |
243 | u32 vnmc, dmr, interrupts; | |
244 | bool progressive = false, output_is_yuv = false; | |
245 | ||
246 | switch (priv->field) { | |
247 | case V4L2_FIELD_TOP: | |
248 | vnmc = VNMC_IM_ODD; | |
249 | break; | |
250 | case V4L2_FIELD_BOTTOM: | |
251 | vnmc = VNMC_IM_EVEN; | |
252 | break; | |
253 | case V4L2_FIELD_INTERLACED: | |
254 | case V4L2_FIELD_INTERLACED_TB: | |
255 | vnmc = VNMC_IM_FULL; | |
256 | break; | |
257 | case V4L2_FIELD_INTERLACED_BT: | |
258 | vnmc = VNMC_IM_FULL | VNMC_FOC; | |
259 | break; | |
260 | case V4L2_FIELD_NONE: | |
261 | if (is_continuous_transfer(priv)) { | |
262 | vnmc = VNMC_IM_ODD_EVEN; | |
263 | progressive = true; | |
264 | } else { | |
265 | vnmc = VNMC_IM_ODD; | |
266 | } | |
267 | break; | |
268 | default: | |
269 | vnmc = VNMC_IM_ODD; | |
270 | break; | |
271 | } | |
272 | ||
273 | /* input interface */ | |
274 | switch (icd->current_fmt->code) { | |
275 | case V4L2_MBUS_FMT_YUYV8_1X16: | |
276 | /* BT.601/BT.1358 16bit YCbCr422 */ | |
277 | vnmc |= VNMC_INF_YUV16; | |
278 | break; | |
279 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
280 | /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */ | |
25dfa02c | 281 | vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ? |
73135e96 | 282 | VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601; |
cbe504d4 PE |
283 | break; |
284 | case V4L2_MBUS_FMT_YUYV10_2X10: | |
285 | /* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */ | |
25dfa02c | 286 | vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ? |
cbe504d4 PE |
287 | VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601; |
288 | break; | |
73135e96 VB |
289 | default: |
290 | break; | |
291 | } | |
292 | ||
293 | /* output format */ | |
294 | switch (icd->current_fmt->host_fmt->fourcc) { | |
295 | case V4L2_PIX_FMT_NV16: | |
296 | iowrite32(ALIGN(cam->width * cam->height, 0x80), | |
297 | priv->base + VNUVAOF_REG); | |
298 | dmr = VNDMR_DTMD_YCSEP; | |
299 | output_is_yuv = true; | |
300 | break; | |
301 | case V4L2_PIX_FMT_YUYV: | |
302 | dmr = VNDMR_BPSM; | |
303 | output_is_yuv = true; | |
304 | break; | |
305 | case V4L2_PIX_FMT_UYVY: | |
306 | dmr = 0; | |
307 | output_is_yuv = true; | |
308 | break; | |
309 | case V4L2_PIX_FMT_RGB555X: | |
310 | dmr = VNDMR_DTMD_ARGB1555; | |
311 | break; | |
312 | case V4L2_PIX_FMT_RGB565: | |
313 | dmr = 0; | |
314 | break; | |
315 | case V4L2_PIX_FMT_RGB32: | |
2a9ecc17 | 316 | if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 || |
ca0c9f17 | 317 | priv->chip == RCAR_E1) { |
73135e96 VB |
318 | dmr = VNDMR_EXRGB; |
319 | break; | |
320 | } | |
321 | default: | |
322 | dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n", | |
323 | icd->current_fmt->host_fmt->fourcc); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | /* Always update on field change */ | |
328 | vnmc |= VNMC_VUP; | |
329 | ||
330 | /* If input and output use the same colorspace, use bypass mode */ | |
331 | if (output_is_yuv) | |
332 | vnmc |= VNMC_BPS; | |
333 | ||
334 | /* progressive or interlaced mode */ | |
335 | interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE; | |
336 | ||
337 | /* ack interrupts */ | |
338 | iowrite32(interrupts, priv->base + VNINTS_REG); | |
339 | /* enable interrupts */ | |
340 | iowrite32(interrupts, priv->base + VNIE_REG); | |
341 | /* start capturing */ | |
342 | iowrite32(dmr, priv->base + VNDMR_REG); | |
343 | iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG); | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static void rcar_vin_capture(struct rcar_vin_priv *priv) | |
349 | { | |
350 | if (is_continuous_transfer(priv)) | |
351 | /* Continuous Frame Capture Mode */ | |
352 | iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG); | |
353 | else | |
354 | /* Single Frame Capture Mode */ | |
355 | iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG); | |
356 | } | |
357 | ||
358 | static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv) | |
359 | { | |
360 | priv->state = STOPPING; | |
361 | ||
362 | /* set continuous & single transfer off */ | |
363 | iowrite32(0, priv->base + VNFC_REG); | |
364 | /* disable capture (release DMA buffer), reset */ | |
365 | iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, | |
366 | priv->base + VNMC_REG); | |
367 | ||
368 | /* update the status if stopped already */ | |
369 | if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA)) | |
370 | priv->state = STOPPED; | |
371 | } | |
372 | ||
373 | static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv) | |
374 | { | |
375 | int slot; | |
376 | ||
377 | for (slot = 0; slot < priv->nr_hw_slots; slot++) | |
378 | if (priv->queue_buf[slot] == NULL) | |
379 | return slot; | |
380 | ||
381 | return -1; | |
382 | } | |
383 | ||
384 | static int rcar_vin_hw_ready(struct rcar_vin_priv *priv) | |
385 | { | |
386 | /* Ensure all HW slots are filled */ | |
387 | return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0; | |
388 | } | |
389 | ||
390 | /* Moves a buffer from the queue to the HW slots */ | |
391 | static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv) | |
392 | { | |
393 | struct vb2_buffer *vb; | |
394 | dma_addr_t phys_addr_top; | |
395 | int slot; | |
396 | ||
397 | if (list_empty(&priv->capture)) | |
398 | return 0; | |
399 | ||
400 | /* Find a free HW slot */ | |
401 | slot = rcar_vin_get_free_hw_slot(priv); | |
402 | if (slot < 0) | |
403 | return 0; | |
404 | ||
405 | vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb; | |
406 | list_del_init(to_buf_list(vb)); | |
407 | priv->queue_buf[slot] = vb; | |
408 | phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0); | |
409 | iowrite32(phys_addr_top, priv->base + VNMB_REG(slot)); | |
410 | ||
411 | return 1; | |
412 | } | |
413 | ||
414 | static void rcar_vin_videobuf_queue(struct vb2_buffer *vb) | |
415 | { | |
416 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); | |
417 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
418 | struct rcar_vin_priv *priv = ici->priv; | |
419 | unsigned long size; | |
420 | ||
421 | size = icd->sizeimage; | |
422 | ||
423 | if (vb2_plane_size(vb, 0) < size) { | |
424 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", | |
425 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); | |
426 | goto error; | |
427 | } | |
428 | ||
429 | vb2_set_plane_payload(vb, 0, size); | |
430 | ||
431 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, | |
432 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
433 | ||
434 | spin_lock_irq(&priv->lock); | |
435 | ||
436 | list_add_tail(to_buf_list(vb), &priv->capture); | |
437 | rcar_vin_fill_hw_slot(priv); | |
438 | ||
439 | /* If we weren't running, and have enough buffers, start capturing! */ | |
440 | if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) { | |
441 | if (rcar_vin_setup(priv)) { | |
442 | /* Submit error */ | |
443 | list_del_init(to_buf_list(vb)); | |
444 | spin_unlock_irq(&priv->lock); | |
445 | goto error; | |
446 | } | |
447 | priv->request_to_stop = false; | |
448 | init_completion(&priv->capture_stop); | |
449 | priv->state = RUNNING; | |
450 | rcar_vin_capture(priv); | |
451 | } | |
452 | ||
453 | spin_unlock_irq(&priv->lock); | |
454 | ||
455 | return; | |
456 | ||
457 | error: | |
458 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
459 | } | |
460 | ||
461 | static void rcar_vin_videobuf_release(struct vb2_buffer *vb) | |
462 | { | |
463 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); | |
464 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
465 | struct rcar_vin_priv *priv = ici->priv; | |
466 | unsigned int i; | |
467 | int buf_in_use = 0; | |
468 | ||
469 | spin_lock_irq(&priv->lock); | |
470 | ||
471 | /* Is the buffer in use by the VIN hardware? */ | |
472 | for (i = 0; i < MAX_BUFFER_NUM; i++) { | |
473 | if (priv->queue_buf[i] == vb) { | |
474 | buf_in_use = 1; | |
475 | break; | |
476 | } | |
477 | } | |
478 | ||
479 | if (buf_in_use) { | |
480 | while (priv->state != STOPPED) { | |
481 | ||
482 | /* issue stop if running */ | |
483 | if (priv->state == RUNNING) | |
484 | rcar_vin_request_capture_stop(priv); | |
485 | ||
486 | /* wait until capturing has been stopped */ | |
487 | if (priv->state == STOPPING) { | |
488 | priv->request_to_stop = true; | |
489 | spin_unlock_irq(&priv->lock); | |
490 | wait_for_completion(&priv->capture_stop); | |
491 | spin_lock_irq(&priv->lock); | |
492 | } | |
493 | } | |
494 | /* | |
495 | * Capturing has now stopped. The buffer we have been asked | |
496 | * to release could be any of the current buffers in use, so | |
497 | * release all buffers that are in use by HW | |
498 | */ | |
499 | for (i = 0; i < MAX_BUFFER_NUM; i++) { | |
500 | if (priv->queue_buf[i]) { | |
501 | vb2_buffer_done(priv->queue_buf[i], | |
502 | VB2_BUF_STATE_ERROR); | |
503 | priv->queue_buf[i] = NULL; | |
504 | } | |
505 | } | |
506 | } else { | |
507 | list_del_init(to_buf_list(vb)); | |
508 | } | |
509 | ||
510 | spin_unlock_irq(&priv->lock); | |
511 | } | |
512 | ||
513 | static int rcar_vin_videobuf_init(struct vb2_buffer *vb) | |
514 | { | |
515 | INIT_LIST_HEAD(to_buf_list(vb)); | |
516 | return 0; | |
517 | } | |
518 | ||
e37559b2 | 519 | static void rcar_vin_stop_streaming(struct vb2_queue *vq) |
73135e96 VB |
520 | { |
521 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); | |
522 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
523 | struct rcar_vin_priv *priv = ici->priv; | |
524 | struct list_head *buf_head, *tmp; | |
525 | ||
526 | spin_lock_irq(&priv->lock); | |
527 | list_for_each_safe(buf_head, tmp, &priv->capture) | |
528 | list_del_init(buf_head); | |
529 | spin_unlock_irq(&priv->lock); | |
73135e96 VB |
530 | } |
531 | ||
532 | static struct vb2_ops rcar_vin_vb2_ops = { | |
533 | .queue_setup = rcar_vin_videobuf_setup, | |
534 | .buf_init = rcar_vin_videobuf_init, | |
535 | .buf_cleanup = rcar_vin_videobuf_release, | |
536 | .buf_queue = rcar_vin_videobuf_queue, | |
537 | .stop_streaming = rcar_vin_stop_streaming, | |
538 | .wait_prepare = soc_camera_unlock, | |
539 | .wait_finish = soc_camera_lock, | |
540 | }; | |
541 | ||
542 | static irqreturn_t rcar_vin_irq(int irq, void *data) | |
543 | { | |
544 | struct rcar_vin_priv *priv = data; | |
545 | u32 int_status; | |
546 | bool can_run = false, hw_stopped; | |
547 | int slot; | |
548 | unsigned int handled = 0; | |
549 | ||
550 | spin_lock(&priv->lock); | |
551 | ||
552 | int_status = ioread32(priv->base + VNINTS_REG); | |
553 | if (!int_status) | |
554 | goto done; | |
555 | /* ack interrupts */ | |
556 | iowrite32(int_status, priv->base + VNINTS_REG); | |
557 | handled = 1; | |
558 | ||
559 | /* nothing to do if capture status is 'STOPPED' */ | |
560 | if (priv->state == STOPPED) | |
561 | goto done; | |
562 | ||
563 | hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA); | |
564 | ||
565 | if (!priv->request_to_stop) { | |
566 | if (is_continuous_transfer(priv)) | |
567 | slot = (ioread32(priv->base + VNMS_REG) & | |
568 | VNMS_FBS_MASK) >> VNMS_FBS_SHIFT; | |
569 | else | |
570 | slot = 0; | |
571 | ||
572 | priv->queue_buf[slot]->v4l2_buf.field = priv->field; | |
573 | priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++; | |
574 | do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp); | |
575 | vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE); | |
576 | priv->queue_buf[slot] = NULL; | |
577 | ||
578 | if (priv->state != STOPPING) | |
579 | can_run = rcar_vin_fill_hw_slot(priv); | |
580 | ||
581 | if (hw_stopped || !can_run) { | |
582 | priv->state = STOPPED; | |
583 | } else if (is_continuous_transfer(priv) && | |
584 | list_empty(&priv->capture) && | |
585 | priv->state == RUNNING) { | |
586 | /* | |
587 | * The continuous capturing requires an explicit stop | |
588 | * operation when there is no buffer to be set into | |
589 | * the VnMBm registers. | |
590 | */ | |
591 | rcar_vin_request_capture_stop(priv); | |
592 | } else { | |
593 | rcar_vin_capture(priv); | |
594 | } | |
595 | ||
596 | } else if (hw_stopped) { | |
597 | priv->state = STOPPED; | |
598 | priv->request_to_stop = false; | |
599 | complete(&priv->capture_stop); | |
600 | } | |
601 | ||
602 | done: | |
603 | spin_unlock(&priv->lock); | |
604 | ||
605 | return IRQ_RETVAL(handled); | |
606 | } | |
607 | ||
608 | static int rcar_vin_add_device(struct soc_camera_device *icd) | |
609 | { | |
610 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
611 | struct rcar_vin_priv *priv = ici->priv; | |
612 | int i; | |
613 | ||
614 | for (i = 0; i < MAX_BUFFER_NUM; i++) | |
615 | priv->queue_buf[i] = NULL; | |
616 | ||
617 | pm_runtime_get_sync(ici->v4l2_dev.dev); | |
618 | ||
619 | dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n", | |
620 | icd->devnum); | |
621 | ||
622 | return 0; | |
623 | } | |
624 | ||
625 | static void rcar_vin_remove_device(struct soc_camera_device *icd) | |
626 | { | |
627 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
628 | struct rcar_vin_priv *priv = ici->priv; | |
629 | struct vb2_buffer *vb; | |
630 | int i; | |
631 | ||
632 | /* disable capture, disable interrupts */ | |
633 | iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, | |
634 | priv->base + VNMC_REG); | |
635 | iowrite32(0, priv->base + VNIE_REG); | |
636 | ||
637 | priv->state = STOPPED; | |
638 | priv->request_to_stop = false; | |
639 | ||
640 | /* make sure active buffer is cancelled */ | |
641 | spin_lock_irq(&priv->lock); | |
642 | for (i = 0; i < MAX_BUFFER_NUM; i++) { | |
643 | vb = priv->queue_buf[i]; | |
644 | if (vb) { | |
645 | list_del_init(to_buf_list(vb)); | |
646 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
647 | } | |
648 | } | |
649 | spin_unlock_irq(&priv->lock); | |
650 | ||
651 | pm_runtime_put(ici->v4l2_dev.dev); | |
652 | ||
653 | dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n", | |
654 | icd->devnum); | |
655 | } | |
656 | ||
657 | /* Called with .host_lock held */ | |
658 | static int rcar_vin_clock_start(struct soc_camera_host *ici) | |
659 | { | |
660 | /* VIN does not have "mclk" */ | |
661 | return 0; | |
662 | } | |
663 | ||
664 | /* Called with .host_lock held */ | |
665 | static void rcar_vin_clock_stop(struct soc_camera_host *ici) | |
666 | { | |
667 | /* VIN does not have "mclk" */ | |
668 | } | |
669 | ||
670 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
671 | static int rcar_vin_set_rect(struct soc_camera_device *icd) | |
672 | { | |
673 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
674 | struct rcar_vin_cam *cam = icd->host_priv; | |
675 | struct rcar_vin_priv *priv = ici->priv; | |
676 | unsigned int left_offset, top_offset; | |
677 | unsigned char dsize = 0; | |
678 | struct v4l2_rect *cam_subrect = &cam->subrect; | |
679 | ||
680 | dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n", | |
681 | icd->user_width, icd->user_height, cam->vin_left, cam->vin_top); | |
682 | ||
683 | left_offset = cam->vin_left; | |
684 | top_offset = cam->vin_top; | |
685 | ||
686 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 && | |
687 | priv->chip == RCAR_E1) | |
688 | dsize = 1; | |
689 | ||
690 | dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n", | |
691 | cam->width, cam->height, cam->vin_left, cam->vin_top); | |
692 | dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n", | |
693 | cam_subrect->width, cam_subrect->height, | |
694 | cam_subrect->left, cam_subrect->top); | |
695 | ||
696 | /* Set Start/End Pixel/Line Pre-Clip */ | |
697 | iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG); | |
698 | iowrite32((left_offset + cam->width - 1) << dsize, | |
699 | priv->base + VNEPPRC_REG); | |
700 | switch (priv->field) { | |
701 | case V4L2_FIELD_INTERLACED: | |
702 | case V4L2_FIELD_INTERLACED_TB: | |
703 | case V4L2_FIELD_INTERLACED_BT: | |
704 | iowrite32(top_offset / 2, priv->base + VNSLPRC_REG); | |
705 | iowrite32((top_offset + cam->height) / 2 - 1, | |
706 | priv->base + VNELPRC_REG); | |
707 | break; | |
708 | default: | |
709 | iowrite32(top_offset, priv->base + VNSLPRC_REG); | |
710 | iowrite32(top_offset + cam->height - 1, | |
711 | priv->base + VNELPRC_REG); | |
712 | break; | |
713 | } | |
714 | ||
715 | /* Set Start/End Pixel/Line Post-Clip */ | |
716 | iowrite32(0, priv->base + VNSPPOC_REG); | |
717 | iowrite32(0, priv->base + VNSLPOC_REG); | |
718 | iowrite32((cam_subrect->width - 1) << dsize, priv->base + VNEPPOC_REG); | |
719 | switch (priv->field) { | |
720 | case V4L2_FIELD_INTERLACED: | |
721 | case V4L2_FIELD_INTERLACED_TB: | |
722 | case V4L2_FIELD_INTERLACED_BT: | |
723 | iowrite32(cam_subrect->height / 2 - 1, | |
724 | priv->base + VNELPOC_REG); | |
725 | break; | |
726 | default: | |
727 | iowrite32(cam_subrect->height - 1, priv->base + VNELPOC_REG); | |
728 | break; | |
729 | } | |
730 | ||
731 | iowrite32(ALIGN(cam->width, 0x10), priv->base + VNIS_REG); | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc) | |
737 | { | |
738 | *vnmc = ioread32(priv->base + VNMC_REG); | |
739 | /* module disable */ | |
740 | iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG); | |
741 | } | |
742 | ||
743 | static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc) | |
744 | { | |
745 | unsigned long timeout = jiffies + 10 * HZ; | |
746 | ||
747 | /* | |
748 | * Wait until the end of the current frame. It can take a long time, | |
749 | * but if it has been aborted by a MRST1 reset, it should exit sooner. | |
750 | */ | |
751 | while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) && | |
752 | time_before(jiffies, timeout)) | |
753 | msleep(1); | |
754 | ||
755 | if (time_after(jiffies, timeout)) { | |
756 | dev_err(priv->ici.v4l2_dev.dev, | |
757 | "Timeout waiting for frame end! Interface problem?\n"); | |
758 | return; | |
759 | } | |
760 | ||
761 | iowrite32(vnmc, priv->base + VNMC_REG); | |
762 | } | |
763 | ||
764 | #define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \ | |
765 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
766 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
767 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
768 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
769 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
770 | V4L2_MBUS_DATA_ACTIVE_HIGH) | |
771 | ||
772 | static int rcar_vin_set_bus_param(struct soc_camera_device *icd) | |
773 | { | |
774 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
775 | struct rcar_vin_priv *priv = ici->priv; | |
776 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
777 | struct v4l2_mbus_config cfg; | |
778 | unsigned long common_flags; | |
779 | u32 vnmc; | |
780 | u32 val; | |
781 | int ret; | |
782 | ||
783 | capture_stop_preserve(priv, &vnmc); | |
784 | ||
785 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
786 | if (!ret) { | |
787 | common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); | |
788 | if (!common_flags) { | |
789 | dev_warn(icd->parent, | |
790 | "MBUS flags incompatible: camera 0x%x, host 0x%x\n", | |
791 | cfg.flags, VIN_MBUS_FLAGS); | |
792 | return -EINVAL; | |
793 | } | |
794 | } else if (ret != -ENOIOCTLCMD) { | |
795 | return ret; | |
796 | } else { | |
797 | common_flags = VIN_MBUS_FLAGS; | |
798 | } | |
799 | ||
800 | /* Make choises, based on platform preferences */ | |
801 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && | |
802 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
25dfa02c | 803 | if (priv->pdata_flags & RCAR_VIN_HSYNC_ACTIVE_LOW) |
73135e96 VB |
804 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
805 | else | |
806 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; | |
807 | } | |
808 | ||
809 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && | |
810 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
25dfa02c | 811 | if (priv->pdata_flags & RCAR_VIN_VSYNC_ACTIVE_LOW) |
73135e96 VB |
812 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
813 | else | |
814 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; | |
815 | } | |
816 | ||
817 | cfg.flags = common_flags; | |
818 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
819 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
820 | return ret; | |
821 | ||
822 | val = priv->field == V4L2_FIELD_NONE ? VNDMR2_FTEV : 0; | |
823 | if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) | |
824 | val |= VNDMR2_VPS; | |
825 | if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) | |
826 | val |= VNDMR2_HPS; | |
827 | iowrite32(val, priv->base + VNDMR2_REG); | |
828 | ||
829 | ret = rcar_vin_set_rect(icd); | |
830 | if (ret < 0) | |
831 | return ret; | |
832 | ||
833 | capture_restore(priv, vnmc); | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | static int rcar_vin_try_bus_param(struct soc_camera_device *icd, | |
839 | unsigned char buswidth) | |
840 | { | |
841 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
842 | struct v4l2_mbus_config cfg; | |
843 | int ret; | |
844 | ||
845 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
846 | if (ret == -ENOIOCTLCMD) | |
847 | return 0; | |
848 | else if (ret) | |
849 | return ret; | |
850 | ||
851 | if (buswidth > 24) | |
852 | return -EINVAL; | |
853 | ||
854 | /* check is there common mbus flags */ | |
855 | ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); | |
856 | if (ret) | |
857 | return 0; | |
858 | ||
859 | dev_warn(icd->parent, | |
860 | "MBUS flags incompatible: camera 0x%x, host 0x%x\n", | |
861 | cfg.flags, VIN_MBUS_FLAGS); | |
862 | ||
863 | return -EINVAL; | |
864 | } | |
865 | ||
866 | static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
867 | { | |
868 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
869 | (fmt->bits_per_sample > 8 && | |
870 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
871 | } | |
872 | ||
873 | static const struct soc_mbus_pixelfmt rcar_vin_formats[] = { | |
874 | { | |
875 | .fourcc = V4L2_PIX_FMT_NV16, | |
876 | .name = "NV16", | |
877 | .bits_per_sample = 8, | |
878 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
879 | .order = SOC_MBUS_ORDER_LE, | |
880 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, | |
881 | }, | |
882 | { | |
883 | .fourcc = V4L2_PIX_FMT_UYVY, | |
884 | .name = "UYVY", | |
885 | .bits_per_sample = 16, | |
886 | .packing = SOC_MBUS_PACKING_NONE, | |
887 | .order = SOC_MBUS_ORDER_LE, | |
888 | .layout = SOC_MBUS_LAYOUT_PACKED, | |
889 | }, | |
890 | { | |
891 | .fourcc = V4L2_PIX_FMT_RGB565, | |
892 | .name = "RGB565", | |
893 | .bits_per_sample = 16, | |
894 | .packing = SOC_MBUS_PACKING_NONE, | |
895 | .order = SOC_MBUS_ORDER_LE, | |
896 | .layout = SOC_MBUS_LAYOUT_PACKED, | |
897 | }, | |
898 | { | |
899 | .fourcc = V4L2_PIX_FMT_RGB555X, | |
900 | .name = "ARGB1555", | |
901 | .bits_per_sample = 16, | |
902 | .packing = SOC_MBUS_PACKING_NONE, | |
903 | .order = SOC_MBUS_ORDER_LE, | |
904 | .layout = SOC_MBUS_LAYOUT_PACKED, | |
905 | }, | |
906 | { | |
907 | .fourcc = V4L2_PIX_FMT_RGB32, | |
908 | .name = "RGB888", | |
909 | .bits_per_sample = 32, | |
910 | .packing = SOC_MBUS_PACKING_NONE, | |
911 | .order = SOC_MBUS_ORDER_LE, | |
912 | .layout = SOC_MBUS_LAYOUT_PACKED, | |
913 | }, | |
914 | }; | |
915 | ||
916 | static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx, | |
917 | struct soc_camera_format_xlate *xlate) | |
918 | { | |
919 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
920 | struct device *dev = icd->parent; | |
921 | int ret, k, n; | |
922 | int formats = 0; | |
923 | struct rcar_vin_cam *cam; | |
924 | enum v4l2_mbus_pixelcode code; | |
925 | const struct soc_mbus_pixelfmt *fmt; | |
926 | ||
927 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); | |
928 | if (ret < 0) | |
929 | return 0; | |
930 | ||
931 | fmt = soc_mbus_get_fmtdesc(code); | |
932 | if (!fmt) { | |
933 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample); | |
938 | if (ret < 0) | |
939 | return 0; | |
940 | ||
941 | if (!icd->host_priv) { | |
942 | struct v4l2_mbus_framefmt mf; | |
943 | struct v4l2_rect rect; | |
944 | struct device *dev = icd->parent; | |
945 | int shift; | |
946 | ||
947 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
948 | if (ret < 0) | |
949 | return ret; | |
950 | ||
951 | /* Cache current client geometry */ | |
952 | ret = soc_camera_client_g_rect(sd, &rect); | |
953 | if (ret == -ENOIOCTLCMD) { | |
954 | /* Sensor driver doesn't support cropping */ | |
955 | rect.left = 0; | |
956 | rect.top = 0; | |
957 | rect.width = mf.width; | |
958 | rect.height = mf.height; | |
959 | } else if (ret < 0) { | |
960 | return ret; | |
961 | } | |
962 | ||
963 | /* | |
964 | * If sensor proposes too large format then try smaller ones: | |
965 | * 1280x960, 640x480, 320x240 | |
966 | */ | |
967 | for (shift = 0; shift < 3; shift++) { | |
968 | if (mf.width <= VIN_MAX_WIDTH && | |
969 | mf.height <= VIN_MAX_HEIGHT) | |
970 | break; | |
971 | ||
972 | mf.width = 1280 >> shift; | |
973 | mf.height = 960 >> shift; | |
974 | ret = v4l2_device_call_until_err(sd->v4l2_dev, | |
975 | soc_camera_grp_id(icd), | |
976 | video, s_mbus_fmt, | |
977 | &mf); | |
978 | if (ret < 0) | |
979 | return ret; | |
980 | } | |
981 | ||
982 | if (shift == 3) { | |
983 | dev_err(dev, | |
984 | "Failed to configure the client below %ux%x\n", | |
985 | mf.width, mf.height); | |
986 | return -EIO; | |
987 | } | |
988 | ||
989 | dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
990 | ||
991 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); | |
992 | if (!cam) | |
993 | return -ENOMEM; | |
994 | /* | |
995 | * We are called with current camera crop, | |
996 | * initialise subrect with it | |
997 | */ | |
998 | cam->rect = rect; | |
999 | cam->subrect = rect; | |
1000 | cam->width = mf.width; | |
1001 | cam->height = mf.height; | |
1002 | ||
1003 | icd->host_priv = cam; | |
1004 | } else { | |
1005 | cam = icd->host_priv; | |
1006 | } | |
1007 | ||
1008 | /* Beginning of a pass */ | |
1009 | if (!idx) | |
1010 | cam->extra_fmt = NULL; | |
1011 | ||
1012 | switch (code) { | |
1013 | case V4L2_MBUS_FMT_YUYV8_1X16: | |
1014 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
cbe504d4 | 1015 | case V4L2_MBUS_FMT_YUYV10_2X10: |
73135e96 VB |
1016 | if (cam->extra_fmt) |
1017 | break; | |
1018 | ||
1019 | /* Add all our formats that can be generated by VIN */ | |
1020 | cam->extra_fmt = rcar_vin_formats; | |
1021 | ||
1022 | n = ARRAY_SIZE(rcar_vin_formats); | |
1023 | formats += n; | |
1024 | for (k = 0; xlate && k < n; k++, xlate++) { | |
1025 | xlate->host_fmt = &rcar_vin_formats[k]; | |
1026 | xlate->code = code; | |
1027 | dev_dbg(dev, "Providing format %s using code %d\n", | |
1028 | rcar_vin_formats[k].name, code); | |
1029 | } | |
1030 | break; | |
1031 | default: | |
1032 | if (!rcar_vin_packing_supported(fmt)) | |
1033 | return 0; | |
1034 | ||
1035 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
1036 | fmt->name); | |
1037 | break; | |
1038 | } | |
1039 | ||
1040 | /* Generic pass-through */ | |
1041 | formats++; | |
1042 | if (xlate) { | |
1043 | xlate->host_fmt = fmt; | |
1044 | xlate->code = code; | |
1045 | xlate++; | |
1046 | } | |
1047 | ||
1048 | return formats; | |
1049 | } | |
1050 | ||
1051 | static void rcar_vin_put_formats(struct soc_camera_device *icd) | |
1052 | { | |
1053 | kfree(icd->host_priv); | |
1054 | icd->host_priv = NULL; | |
1055 | } | |
1056 | ||
1057 | static int rcar_vin_set_crop(struct soc_camera_device *icd, | |
1058 | const struct v4l2_crop *a) | |
1059 | { | |
1060 | struct v4l2_crop a_writable = *a; | |
1061 | const struct v4l2_rect *rect = &a_writable.c; | |
1062 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1063 | struct rcar_vin_priv *priv = ici->priv; | |
1064 | struct v4l2_crop cam_crop; | |
1065 | struct rcar_vin_cam *cam = icd->host_priv; | |
1066 | struct v4l2_rect *cam_rect = &cam_crop.c; | |
1067 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1068 | struct device *dev = icd->parent; | |
1069 | struct v4l2_mbus_framefmt mf; | |
1070 | u32 vnmc; | |
1071 | int ret, i; | |
1072 | ||
1073 | dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, | |
1074 | rect->left, rect->top); | |
1075 | ||
1076 | /* During camera cropping its output window can change too, stop VIN */ | |
1077 | capture_stop_preserve(priv, &vnmc); | |
1078 | dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc); | |
1079 | ||
1080 | /* Apply iterative camera S_CROP for new input window. */ | |
1081 | ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop, | |
1082 | &cam->rect, &cam->subrect); | |
1083 | if (ret < 0) | |
1084 | return ret; | |
1085 | ||
1086 | dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n", | |
1087 | cam_rect->width, cam_rect->height, | |
1088 | cam_rect->left, cam_rect->top); | |
1089 | ||
1090 | /* On success cam_crop contains current camera crop */ | |
1091 | ||
1092 | /* Retrieve camera output window */ | |
1093 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1094 | if (ret < 0) | |
1095 | return ret; | |
1096 | ||
1097 | if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT) | |
1098 | return -EINVAL; | |
1099 | ||
1100 | /* Cache camera output window */ | |
1101 | cam->width = mf.width; | |
1102 | cam->height = mf.height; | |
1103 | ||
1104 | icd->user_width = cam->width; | |
1105 | icd->user_height = cam->height; | |
1106 | ||
1107 | cam->vin_left = rect->left & ~1; | |
1108 | cam->vin_top = rect->top & ~1; | |
1109 | ||
1110 | /* Use VIN cropping to crop to the new window. */ | |
1111 | ret = rcar_vin_set_rect(icd); | |
1112 | if (ret < 0) | |
1113 | return ret; | |
1114 | ||
1115 | cam->subrect = *rect; | |
1116 | ||
1117 | dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n", | |
1118 | icd->user_width, icd->user_height, | |
1119 | cam->vin_left, cam->vin_top); | |
1120 | ||
1121 | /* Restore capture */ | |
1122 | for (i = 0; i < MAX_BUFFER_NUM; i++) { | |
1123 | if (priv->queue_buf[i] && priv->state == STOPPED) { | |
1124 | vnmc |= VNMC_ME; | |
1125 | break; | |
1126 | } | |
1127 | } | |
1128 | capture_restore(priv, vnmc); | |
1129 | ||
1130 | /* Even if only camera cropping succeeded */ | |
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | static int rcar_vin_get_crop(struct soc_camera_device *icd, | |
1135 | struct v4l2_crop *a) | |
1136 | { | |
1137 | struct rcar_vin_cam *cam = icd->host_priv; | |
1138 | ||
1139 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1140 | a->c = cam->subrect; | |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | /* Similar to set_crop multistage iterative algorithm */ | |
1146 | static int rcar_vin_set_fmt(struct soc_camera_device *icd, | |
1147 | struct v4l2_format *f) | |
1148 | { | |
1149 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1150 | struct rcar_vin_priv *priv = ici->priv; | |
1151 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1152 | struct rcar_vin_cam *cam = icd->host_priv; | |
1153 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1154 | struct v4l2_mbus_framefmt mf; | |
1155 | struct device *dev = icd->parent; | |
1156 | __u32 pixfmt = pix->pixelformat; | |
1157 | const struct soc_camera_format_xlate *xlate; | |
1158 | unsigned int vin_sub_width = 0, vin_sub_height = 0; | |
1159 | int ret; | |
1160 | bool can_scale; | |
1161 | enum v4l2_field field; | |
1162 | v4l2_std_id std; | |
1163 | ||
1164 | dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n", | |
1165 | pixfmt, pix->width, pix->height); | |
1166 | ||
1167 | switch (pix->field) { | |
1168 | default: | |
1169 | pix->field = V4L2_FIELD_NONE; | |
1170 | /* fall-through */ | |
1171 | case V4L2_FIELD_NONE: | |
1172 | case V4L2_FIELD_TOP: | |
1173 | case V4L2_FIELD_BOTTOM: | |
1174 | case V4L2_FIELD_INTERLACED_TB: | |
1175 | case V4L2_FIELD_INTERLACED_BT: | |
1176 | field = pix->field; | |
1177 | break; | |
1178 | case V4L2_FIELD_INTERLACED: | |
1179 | /* Query for standard if not explicitly mentioned _TB/_BT */ | |
1180 | ret = v4l2_subdev_call(sd, video, querystd, &std); | |
1181 | if (ret < 0) | |
1182 | std = V4L2_STD_625_50; | |
1183 | ||
1184 | field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB : | |
1185 | V4L2_FIELD_INTERLACED_BT; | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1190 | if (!xlate) { | |
1191 | dev_warn(dev, "Format %x not found\n", pixfmt); | |
1192 | return -EINVAL; | |
1193 | } | |
1194 | /* Calculate client output geometry */ | |
1195 | soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, | |
1196 | 12); | |
1197 | mf.field = pix->field; | |
1198 | mf.colorspace = pix->colorspace; | |
1199 | mf.code = xlate->code; | |
1200 | ||
1201 | switch (pixfmt) { | |
1202 | case V4L2_PIX_FMT_RGB32: | |
1203 | can_scale = priv->chip != RCAR_E1; | |
1204 | break; | |
1205 | case V4L2_PIX_FMT_UYVY: | |
1206 | case V4L2_PIX_FMT_YUYV: | |
1207 | case V4L2_PIX_FMT_RGB565: | |
1208 | case V4L2_PIX_FMT_RGB555X: | |
1209 | can_scale = true; | |
1210 | break; | |
1211 | default: | |
1212 | can_scale = false; | |
1213 | break; | |
1214 | } | |
1215 | ||
1216 | dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height); | |
1217 | ||
1218 | ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect, | |
1219 | &mf, &vin_sub_width, &vin_sub_height, | |
1220 | can_scale, 12); | |
1221 | ||
1222 | /* Done with the camera. Now see if we can improve the result */ | |
1223 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", | |
1224 | ret, mf.width, mf.height, pix->width, pix->height); | |
1225 | ||
1226 | if (ret == -ENOIOCTLCMD) | |
1227 | dev_dbg(dev, "Sensor doesn't support scaling\n"); | |
1228 | else if (ret < 0) | |
1229 | return ret; | |
1230 | ||
1231 | if (mf.code != xlate->code) | |
1232 | return -EINVAL; | |
1233 | ||
1234 | /* Prepare VIN crop */ | |
1235 | cam->width = mf.width; | |
1236 | cam->height = mf.height; | |
1237 | ||
1238 | /* Use VIN scaling to scale to the requested user window. */ | |
1239 | ||
1240 | /* We cannot scale up */ | |
1241 | if (pix->width > vin_sub_width) | |
1242 | vin_sub_width = pix->width; | |
1243 | ||
1244 | if (pix->height > vin_sub_height) | |
1245 | vin_sub_height = pix->height; | |
1246 | ||
1247 | pix->colorspace = mf.colorspace; | |
1248 | ||
1249 | if (!can_scale) { | |
1250 | pix->width = vin_sub_width; | |
1251 | pix->height = vin_sub_height; | |
1252 | } | |
1253 | ||
1254 | /* | |
1255 | * We have calculated CFLCR, the actual configuration will be performed | |
1256 | * in rcar_vin_set_bus_param() | |
1257 | */ | |
1258 | ||
1259 | dev_dbg(dev, "W: %u : %u, H: %u : %u\n", | |
1260 | vin_sub_width, pix->width, vin_sub_height, pix->height); | |
1261 | ||
1262 | icd->current_fmt = xlate; | |
1263 | ||
1264 | priv->field = field; | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static int rcar_vin_try_fmt(struct soc_camera_device *icd, | |
1270 | struct v4l2_format *f) | |
1271 | { | |
1272 | const struct soc_camera_format_xlate *xlate; | |
1273 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1274 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1275 | struct v4l2_mbus_framefmt mf; | |
1276 | __u32 pixfmt = pix->pixelformat; | |
1277 | int width, height; | |
1278 | int ret; | |
1279 | ||
1280 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1281 | if (!xlate) { | |
1282 | xlate = icd->current_fmt; | |
1283 | dev_dbg(icd->parent, "Format %x not found, keeping %x\n", | |
1284 | pixfmt, xlate->host_fmt->fourcc); | |
1285 | pixfmt = xlate->host_fmt->fourcc; | |
1286 | pix->pixelformat = pixfmt; | |
1287 | pix->colorspace = icd->colorspace; | |
1288 | } | |
1289 | ||
1290 | /* FIXME: calculate using depth and bus width */ | |
1291 | v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1, | |
1292 | &pix->height, 4, VIN_MAX_HEIGHT, 2, 0); | |
1293 | ||
1294 | width = pix->width; | |
1295 | height = pix->height; | |
1296 | ||
1297 | /* let soc-camera calculate these values */ | |
1298 | pix->bytesperline = 0; | |
1299 | pix->sizeimage = 0; | |
1300 | ||
1301 | /* limit to sensor capabilities */ | |
1302 | mf.width = pix->width; | |
1303 | mf.height = pix->height; | |
1304 | mf.field = pix->field; | |
1305 | mf.code = xlate->code; | |
1306 | mf.colorspace = pix->colorspace; | |
1307 | ||
1308 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), | |
1309 | video, try_mbus_fmt, &mf); | |
1310 | if (ret < 0) | |
1311 | return ret; | |
1312 | ||
1313 | pix->width = mf.width; | |
1314 | pix->height = mf.height; | |
1315 | pix->field = mf.field; | |
1316 | pix->colorspace = mf.colorspace; | |
1317 | ||
1318 | if (pixfmt == V4L2_PIX_FMT_NV16) { | |
1319 | /* FIXME: check against rect_max after converting soc-camera */ | |
1320 | /* We can scale precisely, need a bigger image from camera */ | |
1321 | if (pix->width < width || pix->height < height) { | |
1322 | /* | |
1323 | * We presume, the sensor behaves sanely, i.e. if | |
1324 | * requested a bigger rectangle, it will not return a | |
1325 | * smaller one. | |
1326 | */ | |
1327 | mf.width = VIN_MAX_WIDTH; | |
1328 | mf.height = VIN_MAX_HEIGHT; | |
1329 | ret = v4l2_device_call_until_err(sd->v4l2_dev, | |
1330 | soc_camera_grp_id(icd), | |
1331 | video, try_mbus_fmt, | |
1332 | &mf); | |
1333 | if (ret < 0) { | |
1334 | dev_err(icd->parent, | |
1335 | "client try_fmt() = %d\n", ret); | |
1336 | return ret; | |
1337 | } | |
1338 | } | |
1339 | /* We will scale exactly */ | |
1340 | if (mf.width > width) | |
1341 | pix->width = width; | |
1342 | if (mf.height > height) | |
1343 | pix->height = height; | |
1344 | } | |
1345 | ||
1346 | return ret; | |
1347 | } | |
1348 | ||
1349 | static unsigned int rcar_vin_poll(struct file *file, poll_table *pt) | |
1350 | { | |
1351 | struct soc_camera_device *icd = file->private_data; | |
1352 | ||
1353 | return vb2_poll(&icd->vb2_vidq, file, pt); | |
1354 | } | |
1355 | ||
1356 | static int rcar_vin_querycap(struct soc_camera_host *ici, | |
1357 | struct v4l2_capability *cap) | |
1358 | { | |
1359 | strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card)); | |
1360 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | static int rcar_vin_init_videobuf2(struct vb2_queue *vq, | |
1365 | struct soc_camera_device *icd) | |
1366 | { | |
1367 | vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1368 | vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
1369 | vq->drv_priv = icd; | |
1370 | vq->ops = &rcar_vin_vb2_ops; | |
1371 | vq->mem_ops = &vb2_dma_contig_memops; | |
1372 | vq->buf_struct_size = sizeof(struct rcar_vin_buffer); | |
ade48681 | 1373 | vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
73135e96 VB |
1374 | |
1375 | return vb2_queue_init(vq); | |
1376 | } | |
1377 | ||
1378 | static struct soc_camera_host_ops rcar_vin_host_ops = { | |
1379 | .owner = THIS_MODULE, | |
1380 | .add = rcar_vin_add_device, | |
1381 | .remove = rcar_vin_remove_device, | |
1382 | .clock_start = rcar_vin_clock_start, | |
1383 | .clock_stop = rcar_vin_clock_stop, | |
1384 | .get_formats = rcar_vin_get_formats, | |
1385 | .put_formats = rcar_vin_put_formats, | |
1386 | .get_crop = rcar_vin_get_crop, | |
1387 | .set_crop = rcar_vin_set_crop, | |
1388 | .try_fmt = rcar_vin_try_fmt, | |
1389 | .set_fmt = rcar_vin_set_fmt, | |
1390 | .poll = rcar_vin_poll, | |
1391 | .querycap = rcar_vin_querycap, | |
1392 | .set_bus_param = rcar_vin_set_bus_param, | |
1393 | .init_videobuf2 = rcar_vin_init_videobuf2, | |
1394 | }; | |
1395 | ||
47c71bd6 BD |
1396 | #ifdef CONFIG_OF |
1397 | static struct of_device_id rcar_vin_of_table[] = { | |
1398 | { .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 }, | |
1399 | { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 }, | |
1400 | { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 }, | |
1401 | { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 }, | |
1402 | { }, | |
1403 | }; | |
1404 | MODULE_DEVICE_TABLE(of, rcar_vin_of_table); | |
1405 | #endif | |
1406 | ||
73135e96 | 1407 | static struct platform_device_id rcar_vin_id_table[] = { |
2a9ecc17 VB |
1408 | { "r8a7791-vin", RCAR_GEN2 }, |
1409 | { "r8a7790-vin", RCAR_GEN2 }, | |
73135e96 VB |
1410 | { "r8a7779-vin", RCAR_H1 }, |
1411 | { "r8a7778-vin", RCAR_M1 }, | |
1412 | { "uPD35004-vin", RCAR_E1 }, | |
1413 | {}, | |
1414 | }; | |
1415 | MODULE_DEVICE_TABLE(platform, rcar_vin_id_table); | |
1416 | ||
1417 | static int rcar_vin_probe(struct platform_device *pdev) | |
1418 | { | |
47c71bd6 | 1419 | const struct of_device_id *match = NULL; |
73135e96 VB |
1420 | struct rcar_vin_priv *priv; |
1421 | struct resource *mem; | |
1422 | struct rcar_vin_platform_data *pdata; | |
47c71bd6 | 1423 | unsigned int pdata_flags; |
73135e96 VB |
1424 | int irq, ret; |
1425 | ||
47c71bd6 BD |
1426 | if (pdev->dev.of_node) { |
1427 | struct v4l2_of_endpoint ep; | |
1428 | struct device_node *np; | |
1429 | ||
1430 | match = of_match_device(of_match_ptr(rcar_vin_of_table), | |
1431 | &pdev->dev); | |
1432 | ||
1433 | np = of_graph_get_next_endpoint(pdev->dev.of_node, NULL); | |
1434 | if (!np) { | |
1435 | dev_err(&pdev->dev, "could not find endpoint\n"); | |
1436 | return -EINVAL; | |
1437 | } | |
1438 | ||
1439 | ret = v4l2_of_parse_endpoint(np, &ep); | |
1440 | if (ret) { | |
1441 | dev_err(&pdev->dev, "could not parse endpoint\n"); | |
1442 | return ret; | |
1443 | } | |
1444 | ||
1445 | if (ep.bus_type == V4L2_MBUS_BT656) | |
1446 | pdata_flags = RCAR_VIN_BT656; | |
1447 | else { | |
1448 | pdata_flags = 0; | |
1449 | if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) | |
1450 | pdata_flags |= RCAR_VIN_HSYNC_ACTIVE_LOW; | |
1451 | if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) | |
1452 | pdata_flags |= RCAR_VIN_VSYNC_ACTIVE_LOW; | |
1453 | } | |
1454 | ||
1455 | of_node_put(np); | |
1456 | ||
1457 | dev_dbg(&pdev->dev, "pdata_flags = %08x\n", pdata_flags); | |
1458 | } else { | |
1459 | pdata = pdev->dev.platform_data; | |
1460 | if (!pdata || !pdata->flags) { | |
1461 | dev_err(&pdev->dev, "platform data not set\n"); | |
1462 | return -EINVAL; | |
1463 | } | |
1464 | pdata_flags = pdata->flags; | |
73135e96 VB |
1465 | } |
1466 | ||
1467 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1468 | if (mem == NULL) | |
1469 | return -EINVAL; | |
1470 | ||
1471 | irq = platform_get_irq(pdev, 0); | |
1472 | if (irq <= 0) | |
1473 | return -EINVAL; | |
1474 | ||
1475 | priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv), | |
1476 | GFP_KERNEL); | |
1477 | if (!priv) | |
1478 | return -ENOMEM; | |
1479 | ||
1480 | priv->base = devm_ioremap_resource(&pdev->dev, mem); | |
1481 | if (IS_ERR(priv->base)) | |
1482 | return PTR_ERR(priv->base); | |
1483 | ||
1484 | ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED, | |
1485 | dev_name(&pdev->dev), priv); | |
1486 | if (ret) | |
1487 | return ret; | |
1488 | ||
1489 | priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); | |
1490 | if (IS_ERR(priv->alloc_ctx)) | |
1491 | return PTR_ERR(priv->alloc_ctx); | |
1492 | ||
1493 | priv->ici.priv = priv; | |
1494 | priv->ici.v4l2_dev.dev = &pdev->dev; | |
73135e96 VB |
1495 | priv->ici.drv_name = dev_name(&pdev->dev); |
1496 | priv->ici.ops = &rcar_vin_host_ops; | |
1497 | ||
47c71bd6 BD |
1498 | priv->pdata_flags = pdata_flags; |
1499 | if (!match) { | |
1500 | priv->ici.nr = pdev->id; | |
1501 | priv->chip = pdev->id_entry->driver_data; | |
1502 | } else { | |
1503 | priv->ici.nr = of_alias_get_id(pdev->dev.of_node, "vin"); | |
1504 | priv->chip = (enum chip_id)match->data; | |
1505 | }; | |
1506 | ||
73135e96 VB |
1507 | spin_lock_init(&priv->lock); |
1508 | INIT_LIST_HEAD(&priv->capture); | |
1509 | ||
1510 | priv->state = STOPPED; | |
1511 | ||
1512 | pm_suspend_ignore_children(&pdev->dev, true); | |
1513 | pm_runtime_enable(&pdev->dev); | |
1514 | ||
1515 | ret = soc_camera_host_register(&priv->ici); | |
1516 | if (ret) | |
1517 | goto cleanup; | |
1518 | ||
1519 | return 0; | |
1520 | ||
1521 | cleanup: | |
1522 | pm_runtime_disable(&pdev->dev); | |
1523 | vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); | |
1524 | ||
1525 | return ret; | |
1526 | } | |
1527 | ||
1528 | static int rcar_vin_remove(struct platform_device *pdev) | |
1529 | { | |
1530 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); | |
1531 | struct rcar_vin_priv *priv = container_of(soc_host, | |
1532 | struct rcar_vin_priv, ici); | |
1533 | ||
1534 | soc_camera_host_unregister(soc_host); | |
1535 | pm_runtime_disable(&pdev->dev); | |
1536 | vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); | |
1537 | ||
1538 | return 0; | |
1539 | } | |
1540 | ||
1541 | static struct platform_driver rcar_vin_driver = { | |
1542 | .probe = rcar_vin_probe, | |
1543 | .remove = rcar_vin_remove, | |
1544 | .driver = { | |
1545 | .name = DRV_NAME, | |
1546 | .owner = THIS_MODULE, | |
47c71bd6 | 1547 | .of_match_table = of_match_ptr(rcar_vin_of_table), |
73135e96 VB |
1548 | }, |
1549 | .id_table = rcar_vin_id_table, | |
1550 | }; | |
1551 | ||
1552 | module_platform_driver(rcar_vin_driver); | |
1553 | ||
1554 | MODULE_LICENSE("GPL"); | |
1555 | MODULE_ALIAS("platform:rcar_vin"); | |
1556 | MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver"); |