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1 | /* |
2 | * This is the driver for the STA2x11 Video Input Port. | |
3 | * | |
4 | * Copyright (C) 2010 WindRiver Systems, Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | * The full GNU General Public License is included in this distribution in | |
20 | * the file called "COPYING". | |
21 | * | |
22 | * Author: Andreas Kies <andreas.kies@windriver.com> | |
23 | * Vlad Lungu <vlad.lungu@windriver.com> | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/types.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/vmalloc.h> | |
32 | ||
33 | #include <linux/videodev2.h> | |
34 | ||
35 | #include <linux/kmod.h> | |
36 | ||
37 | #include <linux/pci.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <linux/mutex.h> | |
40 | #include <linux/io.h> | |
41 | #include <linux/gpio.h> | |
42 | #include <linux/i2c.h> | |
43 | #include <linux/delay.h> | |
44 | #include <media/v4l2-common.h> | |
45 | #include <media/v4l2-device.h> | |
46 | #include <media/v4l2-ioctl.h> | |
47 | #include <media/videobuf-dma-contig.h> | |
48 | ||
49 | #include "sta2x11_vip.h" | |
50 | ||
51 | #define DRV_NAME "sta2x11_vip" | |
52 | #define DRV_VERSION "1.3" | |
53 | ||
54 | #ifndef PCI_DEVICE_ID_STMICRO_VIP | |
55 | #define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D | |
56 | #endif | |
57 | ||
58 | #define MAX_FRAMES 4 | |
59 | ||
60 | /*Register offsets*/ | |
61 | #define DVP_CTL 0x00 | |
62 | #define DVP_TFO 0x04 | |
63 | #define DVP_TFS 0x08 | |
64 | #define DVP_BFO 0x0C | |
65 | #define DVP_BFS 0x10 | |
66 | #define DVP_VTP 0x14 | |
67 | #define DVP_VBP 0x18 | |
68 | #define DVP_VMP 0x1C | |
69 | #define DVP_ITM 0x98 | |
70 | #define DVP_ITS 0x9C | |
71 | #define DVP_STA 0xA0 | |
72 | #define DVP_HLFLN 0xA8 | |
73 | #define DVP_RGB 0xC0 | |
74 | #define DVP_PKZ 0xF0 | |
75 | ||
76 | /*Register fields*/ | |
77 | #define DVP_CTL_ENA 0x00000001 | |
78 | #define DVP_CTL_RST 0x80000000 | |
79 | #define DVP_CTL_DIS (~0x00040001) | |
80 | ||
81 | #define DVP_IT_VSB 0x00000008 | |
82 | #define DVP_IT_VST 0x00000010 | |
83 | #define DVP_IT_FIFO 0x00000020 | |
84 | ||
85 | #define DVP_HLFLN_SD 0x00000001 | |
86 | ||
87 | #define REG_WRITE(vip, reg, value) iowrite32((value), (vip->iomem)+(reg)) | |
88 | #define REG_READ(vip, reg) ioread32((vip->iomem)+(reg)) | |
89 | ||
90 | #define SAVE_COUNT 8 | |
91 | #define AUX_COUNT 3 | |
92 | #define IRQ_COUNT 1 | |
93 | ||
94 | /** | |
95 | * struct sta2x11_vip - All internal data for one instance of device | |
96 | * @v4l2_dev: device registered in v4l layer | |
97 | * @video_dev: properties of our device | |
98 | * @pdev: PCI device | |
99 | * @adapter: contains I2C adapter information | |
100 | * @register_save_area: All relevant register are saved here during suspend | |
101 | * @decoder: contains information about video DAC | |
102 | * @format: pixel format, fixed UYVY | |
103 | * @std: video standard (e.g. PAL/NTSC) | |
104 | * @input: input line for video signal ( 0 or 1 ) | |
105 | * @users: Number of open of device ( max. 1 ) | |
106 | * @disabled: Device is in power down state | |
107 | * @mutex: ensures exclusive opening of device | |
108 | * @slock: for excluse acces of registers | |
109 | * @vb_vidq: queue maintained by videobuf layer | |
110 | * @capture: linked list of capture buffer | |
111 | * @active: struct videobuf_buffer currently beingg filled | |
112 | * @started: device is ready to capture frame | |
113 | * @closing: device will be shut down | |
114 | * @tcount: Number of top frames | |
115 | * @bcount: Number of bottom frames | |
116 | * @overflow: Number of FIFO overflows | |
117 | * @mem_spare: small buffer of unused frame | |
118 | * @dma_spare: dma addres of mem_spare | |
119 | * @iomem: hardware base address | |
120 | * @config: I2C and gpio config from platform | |
121 | * | |
122 | * All non-local data is accessed via this structure. | |
123 | */ | |
124 | ||
125 | struct sta2x11_vip { | |
126 | struct v4l2_device v4l2_dev; | |
127 | struct video_device *video_dev; | |
128 | struct pci_dev *pdev; | |
129 | struct i2c_adapter *adapter; | |
130 | unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT]; | |
131 | struct v4l2_subdev *decoder; | |
132 | struct v4l2_pix_format format; | |
133 | v4l2_std_id std; | |
134 | unsigned int input; | |
135 | int users; | |
136 | int disabled; | |
137 | struct mutex mutex; /* exclusive access during open */ | |
138 | spinlock_t slock; /* spin lock for hardware and queue access */ | |
139 | struct videobuf_queue vb_vidq; | |
140 | struct list_head capture; | |
141 | struct videobuf_buffer *active; | |
142 | int started, closing, tcount, bcount; | |
143 | int overflow; | |
144 | void *mem_spare; | |
145 | dma_addr_t dma_spare; | |
146 | void *iomem; | |
147 | struct vip_config *config; | |
148 | }; | |
149 | ||
150 | static const unsigned int registers_to_save[AUX_COUNT] = { | |
151 | DVP_HLFLN, DVP_RGB, DVP_PKZ | |
152 | }; | |
153 | ||
154 | static struct v4l2_pix_format formats_50[] = { | |
155 | { /*PAL interlaced */ | |
156 | .width = 720, | |
157 | .height = 576, | |
158 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
159 | .field = V4L2_FIELD_INTERLACED, | |
160 | .bytesperline = 720 * 2, | |
161 | .sizeimage = 720 * 2 * 576, | |
162 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
163 | { /*PAL top */ | |
164 | .width = 720, | |
165 | .height = 288, | |
166 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
167 | .field = V4L2_FIELD_TOP, | |
168 | .bytesperline = 720 * 2, | |
169 | .sizeimage = 720 * 2 * 288, | |
170 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
171 | { /*PAL bottom */ | |
172 | .width = 720, | |
173 | .height = 288, | |
174 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
175 | .field = V4L2_FIELD_BOTTOM, | |
176 | .bytesperline = 720 * 2, | |
177 | .sizeimage = 720 * 2 * 288, | |
178 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
179 | ||
180 | }; | |
181 | ||
182 | static struct v4l2_pix_format formats_60[] = { | |
183 | { /*NTSC interlaced */ | |
184 | .width = 720, | |
185 | .height = 480, | |
186 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
187 | .field = V4L2_FIELD_INTERLACED, | |
188 | .bytesperline = 720 * 2, | |
189 | .sizeimage = 720 * 2 * 480, | |
190 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
191 | { /*NTSC top */ | |
192 | .width = 720, | |
193 | .height = 240, | |
194 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
195 | .field = V4L2_FIELD_TOP, | |
196 | .bytesperline = 720 * 2, | |
197 | .sizeimage = 720 * 2 * 240, | |
198 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
199 | { /*NTSC bottom */ | |
200 | .width = 720, | |
201 | .height = 240, | |
202 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
203 | .field = V4L2_FIELD_BOTTOM, | |
204 | .bytesperline = 720 * 2, | |
205 | .sizeimage = 720 * 2 * 240, | |
206 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, | |
207 | }; | |
208 | ||
209 | /** | |
210 | * buf_setup - Get size and number of video buffer | |
211 | * @vq: queue in videobuf | |
212 | * @count: Number of buffers (1..MAX_FRAMES). | |
213 | * 0 use default value. | |
214 | * @size: size of buffer in bytes | |
215 | * | |
216 | * returns size and number of buffers | |
217 | * a preset value of 0 returns the default number. | |
218 | * return value: 0, always succesfull. | |
219 | */ | |
220 | static int buf_setup(struct videobuf_queue *vq, unsigned int *count, | |
221 | unsigned int *size) | |
222 | { | |
223 | struct sta2x11_vip *vip = vq->priv_data; | |
224 | ||
225 | *size = vip->format.width * vip->format.height * 2; | |
226 | if (0 == *count || MAX_FRAMES < *count) | |
227 | *count = MAX_FRAMES; | |
228 | return 0; | |
229 | }; | |
230 | ||
231 | /** | |
232 | * buf_prepare - prepare buffer for usage | |
233 | * @vq: queue in videobuf layer | |
234 | * @vb: buffer to be prepared | |
235 | * @field: type of video data (interlaced/non-interlaced) | |
236 | * | |
237 | * Allocate or realloc buffer | |
238 | * return value: 0, successful. | |
239 | * | |
240 | * -EINVAL, supplied buffer is too small. | |
241 | * | |
242 | * other, buffer could not be locked. | |
243 | */ | |
244 | static int buf_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
245 | enum v4l2_field field) | |
246 | { | |
247 | struct sta2x11_vip *vip = vq->priv_data; | |
248 | int ret; | |
249 | ||
250 | vb->size = vip->format.width * vip->format.height * 2; | |
251 | if ((0 != vb->baddr) && (vb->bsize < vb->size)) | |
252 | return -EINVAL; | |
253 | vb->width = vip->format.width; | |
254 | vb->height = vip->format.height; | |
255 | vb->field = field; | |
256 | ||
257 | if (VIDEOBUF_NEEDS_INIT == vb->state) { | |
258 | ret = videobuf_iolock(vq, vb, NULL); | |
259 | if (ret) | |
260 | goto fail; | |
261 | } | |
262 | vb->state = VIDEOBUF_PREPARED; | |
263 | return 0; | |
264 | fail: | |
265 | videobuf_dma_contig_free(vq, vb); | |
266 | vb->state = VIDEOBUF_NEEDS_INIT; | |
267 | return ret; | |
268 | } | |
269 | ||
270 | /** | |
271 | * buf_queu - queue buffer for filling | |
272 | * @vq: queue in videobuf layer | |
273 | * @vb: buffer to be queued | |
274 | * | |
275 | * if capturing is already running, the buffer will be queued. Otherwise | |
276 | * capture is started and the buffer is used directly. | |
277 | */ | |
278 | static void buf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
279 | { | |
280 | struct sta2x11_vip *vip = vq->priv_data; | |
281 | u32 dma; | |
282 | ||
283 | vb->state = VIDEOBUF_QUEUED; | |
284 | ||
285 | if (vip->active) { | |
286 | list_add_tail(&vb->queue, &vip->capture); | |
287 | return; | |
288 | } | |
289 | ||
290 | vip->started = 1; | |
291 | vip->tcount = 0; | |
292 | vip->bcount = 0; | |
293 | vip->active = vb; | |
294 | vb->state = VIDEOBUF_ACTIVE; | |
295 | ||
296 | dma = videobuf_to_dma_contig(vb); | |
297 | ||
298 | REG_WRITE(vip, DVP_TFO, (0 << 16) | (0)); | |
299 | /* despite of interlace mode, upper and lower frames start at zero */ | |
300 | REG_WRITE(vip, DVP_BFO, (0 << 16) | (0)); | |
301 | ||
302 | switch (vip->format.field) { | |
303 | case V4L2_FIELD_INTERLACED: | |
304 | REG_WRITE(vip, DVP_TFS, | |
305 | ((vip->format.height / 2 - 1) << 16) | | |
306 | (2 * vip->format.width - 1)); | |
307 | REG_WRITE(vip, DVP_BFS, ((vip->format.height / 2 - 1) << 16) | | |
308 | (2 * vip->format.width - 1)); | |
309 | REG_WRITE(vip, DVP_VTP, dma); | |
310 | REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2); | |
311 | REG_WRITE(vip, DVP_VMP, 4 * vip->format.width); | |
312 | break; | |
313 | case V4L2_FIELD_TOP: | |
314 | REG_WRITE(vip, DVP_TFS, | |
315 | ((vip->format.height - 1) << 16) | | |
316 | (2 * vip->format.width - 1)); | |
317 | REG_WRITE(vip, DVP_BFS, ((0) << 16) | | |
318 | (2 * vip->format.width - 1)); | |
319 | REG_WRITE(vip, DVP_VTP, dma); | |
320 | REG_WRITE(vip, DVP_VBP, dma); | |
321 | REG_WRITE(vip, DVP_VMP, 2 * vip->format.width); | |
322 | break; | |
323 | case V4L2_FIELD_BOTTOM: | |
324 | REG_WRITE(vip, DVP_TFS, ((0) << 16) | | |
325 | (2 * vip->format.width - 1)); | |
326 | REG_WRITE(vip, DVP_BFS, | |
327 | ((vip->format.height) << 16) | | |
328 | (2 * vip->format.width - 1)); | |
329 | REG_WRITE(vip, DVP_VTP, dma); | |
330 | REG_WRITE(vip, DVP_VBP, dma); | |
331 | REG_WRITE(vip, DVP_VMP, 2 * vip->format.width); | |
332 | break; | |
333 | ||
334 | default: | |
335 | pr_warning("VIP: unknown field format\n"); | |
336 | return; | |
337 | } | |
338 | ||
339 | REG_WRITE(vip, DVP_CTL, DVP_CTL_ENA); | |
340 | } | |
341 | ||
342 | /** | |
343 | * buff_release - release buffer | |
344 | * @vq: queue in videobuf layer | |
345 | * @vb: buffer to be released | |
346 | * | |
347 | * release buffer in videobuf layer | |
348 | */ | |
349 | static void buf_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
350 | { | |
351 | ||
352 | videobuf_dma_contig_free(vq, vb); | |
353 | vb->state = VIDEOBUF_NEEDS_INIT; | |
354 | } | |
355 | ||
356 | static struct videobuf_queue_ops vip_qops = { | |
357 | .buf_setup = buf_setup, | |
358 | .buf_prepare = buf_prepare, | |
359 | .buf_queue = buf_queue, | |
360 | .buf_release = buf_release, | |
361 | }; | |
362 | ||
363 | /** | |
364 | * vip_open - open video device | |
365 | * @file: descriptor of device | |
366 | * | |
367 | * open device, make sure it is only opened once. | |
368 | * return value: 0, no error. | |
369 | * | |
370 | * -EBUSY, device is already opened | |
371 | * | |
372 | * -ENOMEM, no memory for auxiliary DMA buffer | |
373 | */ | |
374 | static int vip_open(struct file *file) | |
375 | { | |
376 | struct video_device *dev = video_devdata(file); | |
377 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
378 | ||
379 | mutex_lock(&vip->mutex); | |
380 | vip->users++; | |
381 | ||
382 | if (vip->users > 1) { | |
383 | vip->users--; | |
384 | mutex_unlock(&vip->mutex); | |
385 | return -EBUSY; | |
386 | } | |
387 | ||
388 | file->private_data = dev; | |
389 | vip->overflow = 0; | |
390 | vip->started = 0; | |
391 | vip->closing = 0; | |
392 | vip->active = NULL; | |
393 | ||
394 | INIT_LIST_HEAD(&vip->capture); | |
395 | vip->mem_spare = dma_alloc_coherent(&vip->pdev->dev, 64, | |
396 | &vip->dma_spare, GFP_KERNEL); | |
397 | if (!vip->mem_spare) { | |
398 | vip->users--; | |
399 | mutex_unlock(&vip->mutex); | |
400 | return -ENOMEM; | |
401 | } | |
402 | ||
403 | mutex_unlock(&vip->mutex); | |
404 | videobuf_queue_dma_contig_init_cached(&vip->vb_vidq, | |
405 | &vip_qops, | |
406 | &vip->pdev->dev, | |
407 | &vip->slock, | |
408 | V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
409 | V4L2_FIELD_INTERLACED, | |
410 | sizeof(struct videobuf_buffer), | |
411 | vip, NULL); | |
412 | REG_READ(vip, DVP_ITS); | |
413 | REG_WRITE(vip, DVP_HLFLN, DVP_HLFLN_SD); | |
414 | REG_WRITE(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST); | |
415 | REG_WRITE(vip, DVP_CTL, DVP_CTL_RST); | |
416 | REG_WRITE(vip, DVP_CTL, 0); | |
417 | REG_READ(vip, DVP_ITS); | |
418 | return 0; | |
419 | } | |
420 | ||
421 | /** | |
422 | * vip_close - close video device | |
423 | * @file: descriptor of device | |
424 | * | |
425 | * close video device, wait until all pending operations are finished | |
426 | * ( maximum FRAME_MAX buffers pending ) | |
427 | * Turn off interrupts. | |
428 | * | |
429 | * return value: 0, always succesful. | |
430 | */ | |
431 | static int vip_close(struct file *file) | |
432 | { | |
433 | struct video_device *dev = video_devdata(file); | |
434 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
435 | ||
436 | vip->closing = 1; | |
437 | if (vip->active) | |
438 | videobuf_waiton(&vip->vb_vidq, vip->active, 0, 0); | |
439 | spin_lock_irq(&vip->slock); | |
440 | ||
441 | REG_WRITE(vip, DVP_ITM, 0); | |
442 | REG_WRITE(vip, DVP_CTL, DVP_CTL_RST); | |
443 | REG_WRITE(vip, DVP_CTL, 0); | |
444 | REG_READ(vip, DVP_ITS); | |
445 | ||
446 | vip->started = 0; | |
447 | vip->active = NULL; | |
448 | ||
449 | spin_unlock_irq(&vip->slock); | |
450 | ||
451 | videobuf_stop(&vip->vb_vidq); | |
452 | videobuf_mmap_free(&vip->vb_vidq); | |
453 | ||
454 | dma_free_coherent(&vip->pdev->dev, 64, vip->mem_spare, vip->dma_spare); | |
455 | file->private_data = NULL; | |
456 | mutex_lock(&vip->mutex); | |
457 | vip->users--; | |
458 | mutex_unlock(&vip->mutex); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | /** | |
463 | * vip_read - read from video input | |
464 | * @file: descriptor of device | |
465 | * @data: user buffer | |
466 | * @count: number of bytes to be read | |
467 | * @ppos: position within stream | |
468 | * | |
469 | * read video data from video device. | |
470 | * handling is done in generic videobuf layer | |
471 | * return value: provided by videobuf layer | |
472 | */ | |
473 | static ssize_t vip_read(struct file *file, char __user *data, | |
474 | size_t count, loff_t *ppos) | |
475 | { | |
476 | struct video_device *dev = file->private_data; | |
477 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
478 | ||
479 | return videobuf_read_stream(&vip->vb_vidq, data, count, ppos, 0, | |
480 | file->f_flags & O_NONBLOCK); | |
481 | } | |
482 | ||
483 | /** | |
484 | * vip_mmap - map user buffer | |
485 | * @file: descriptor of device | |
486 | * @vma: user buffer | |
487 | * | |
488 | * map user space buffer into kernel mode, including DMA address. | |
489 | * handling is done in generic videobuf layer. | |
490 | * return value: provided by videobuf layer | |
491 | */ | |
492 | static int vip_mmap(struct file *file, struct vm_area_struct *vma) | |
493 | { | |
494 | struct video_device *dev = file->private_data; | |
495 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
496 | ||
497 | return videobuf_mmap_mapper(&vip->vb_vidq, vma); | |
498 | } | |
499 | ||
500 | /** | |
501 | * vip_poll - poll for event | |
502 | * @file: descriptor of device | |
503 | * @wait: contains events to be waited for | |
504 | * | |
505 | * wait for event related to video device. | |
506 | * handling is done in generic videobuf layer. | |
507 | * return value: provided by videobuf layer | |
508 | */ | |
509 | static unsigned int vip_poll(struct file *file, struct poll_table_struct *wait) | |
510 | { | |
511 | struct video_device *dev = file->private_data; | |
512 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
513 | ||
514 | return videobuf_poll_stream(file, &vip->vb_vidq, wait); | |
515 | } | |
516 | ||
517 | /** | |
518 | * vidioc_querycap - return capabilities of device | |
519 | * @file: descriptor of device (not used) | |
520 | * @priv: points to current videodevice | |
521 | * @cap: contains return values | |
522 | * | |
523 | * the capabilities of the device are returned | |
524 | * | |
525 | * return value: 0, no error. | |
526 | */ | |
527 | static int vidioc_querycap(struct file *file, void *priv, | |
528 | struct v4l2_capability *cap) | |
529 | { | |
530 | struct video_device *dev = priv; | |
531 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
532 | ||
533 | memset(cap, 0, sizeof(struct v4l2_capability)); | |
534 | strcpy(cap->driver, DRV_NAME); | |
535 | strcpy(cap->card, DRV_NAME); | |
536 | cap->version = 0; | |
537 | snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", | |
538 | pci_name(vip->pdev)); | |
539 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | | |
540 | V4L2_CAP_STREAMING; | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | /** | |
546 | * vidioc_s_std - set video standard | |
547 | * @file: descriptor of device (not used) | |
548 | * @priv: points to current videodevice | |
549 | * @std: contains standard to be set | |
550 | * | |
551 | * the video standard is set | |
552 | * | |
553 | * return value: 0, no error. | |
554 | * | |
555 | * -EIO, no input signal detected | |
556 | * | |
557 | * other, returned from video DAC. | |
558 | */ | |
559 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *std) | |
560 | { | |
561 | struct video_device *dev = priv; | |
562 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
563 | v4l2_std_id oldstd = vip->std, newstd; | |
564 | int status; | |
565 | ||
566 | if (V4L2_STD_ALL == *std) { | |
567 | v4l2_subdev_call(vip->decoder, core, s_std, *std); | |
568 | ssleep(2); | |
569 | v4l2_subdev_call(vip->decoder, video, querystd, &newstd); | |
570 | v4l2_subdev_call(vip->decoder, video, g_input_status, &status); | |
571 | if (status & V4L2_IN_ST_NO_SIGNAL) | |
572 | return -EIO; | |
573 | *std = vip->std = newstd; | |
574 | if (oldstd != *std) { | |
6ae009a8 | 575 | if (V4L2_STD_525_60 & (*std)) |
efeb98b4 FV |
576 | vip->format = formats_60[0]; |
577 | else | |
578 | vip->format = formats_50[0]; | |
579 | } | |
580 | return 0; | |
581 | } | |
582 | ||
583 | if (oldstd != *std) { | |
6ae009a8 | 584 | if (V4L2_STD_525_60 & (*std)) |
efeb98b4 FV |
585 | vip->format = formats_60[0]; |
586 | else | |
587 | vip->format = formats_50[0]; | |
588 | } | |
589 | ||
590 | return v4l2_subdev_call(vip->decoder, core, s_std, *std); | |
591 | } | |
592 | ||
593 | /** | |
594 | * vidioc_g_std - get video standard | |
595 | * @file: descriptor of device (not used) | |
596 | * @priv: points to current videodevice | |
597 | * @std: contains return values | |
598 | * | |
599 | * the current video standard is returned | |
600 | * | |
601 | * return value: 0, no error. | |
602 | */ | |
603 | static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std) | |
604 | { | |
605 | struct video_device *dev = priv; | |
606 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
607 | ||
608 | *std = vip->std; | |
609 | return 0; | |
610 | } | |
611 | ||
612 | /** | |
613 | * vidioc_querystd - get possible video standards | |
614 | * @file: descriptor of device (not used) | |
615 | * @priv: points to current videodevice | |
616 | * @std: contains return values | |
617 | * | |
618 | * all possible video standards are returned | |
619 | * | |
620 | * return value: delivered by video DAC routine. | |
621 | */ | |
622 | static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std) | |
623 | { | |
624 | struct video_device *dev = priv; | |
625 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
626 | ||
627 | return v4l2_subdev_call(vip->decoder, video, querystd, std); | |
628 | ||
629 | } | |
630 | ||
631 | /** | |
632 | * vidioc_queryctl - get possible control settings | |
633 | * @file: descriptor of device (not used) | |
634 | * @priv: points to current videodevice | |
635 | * @ctrl: contains return values | |
636 | * | |
637 | * return possible values for a control | |
638 | * return value: delivered by video DAC routine. | |
639 | */ | |
640 | static int vidioc_queryctrl(struct file *file, void *priv, | |
641 | struct v4l2_queryctrl *ctrl) | |
642 | { | |
643 | struct video_device *dev = priv; | |
644 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
645 | ||
646 | return v4l2_subdev_call(vip->decoder, core, queryctrl, ctrl); | |
647 | } | |
648 | ||
649 | /** | |
650 | * vidioc_g_ctl - get control value | |
651 | * @file: descriptor of device (not used) | |
652 | * @priv: points to current videodevice | |
653 | * @ctrl: contains return values | |
654 | * | |
655 | * return setting for a control value | |
656 | * return value: delivered by video DAC routine. | |
657 | */ | |
658 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
659 | struct v4l2_control *ctrl) | |
660 | { | |
661 | struct video_device *dev = priv; | |
662 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
663 | ||
664 | return v4l2_subdev_call(vip->decoder, core, g_ctrl, ctrl); | |
665 | } | |
666 | ||
667 | /** | |
668 | * vidioc_s_ctl - set control value | |
669 | * @file: descriptor of device (not used) | |
670 | * @priv: points to current videodevice | |
671 | * @ctrl: contains value to be set | |
672 | * | |
673 | * set value for a specific control | |
674 | * return value: delivered by video DAC routine. | |
675 | */ | |
676 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
677 | struct v4l2_control *ctrl) | |
678 | { | |
679 | struct video_device *dev = priv; | |
680 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
681 | ||
682 | return v4l2_subdev_call(vip->decoder, core, s_ctrl, ctrl); | |
683 | } | |
684 | ||
685 | /** | |
686 | * vidioc_enum_input - return name of input line | |
687 | * @file: descriptor of device (not used) | |
688 | * @priv: points to current videodevice | |
689 | * @inp: contains return values | |
690 | * | |
691 | * the user friendly name of the input line is returned | |
692 | * | |
693 | * return value: 0, no error. | |
694 | * | |
695 | * -EINVAL, input line number out of range | |
696 | */ | |
697 | static int vidioc_enum_input(struct file *file, void *priv, | |
698 | struct v4l2_input *inp) | |
699 | { | |
700 | if (inp->index > 1) | |
701 | return -EINVAL; | |
702 | ||
703 | inp->type = V4L2_INPUT_TYPE_CAMERA; | |
704 | inp->std = V4L2_STD_ALL; | |
705 | sprintf(inp->name, "Camera %u", inp->index); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | /** | |
711 | * vidioc_s_input - set input line | |
712 | * @file: descriptor of device ( not used) | |
713 | * @priv: points to current videodevice | |
714 | * @i: new input line number | |
715 | * | |
716 | * the current active input line is set | |
717 | * | |
718 | * return value: 0, no error. | |
719 | * | |
720 | * -EINVAL, line number out of range | |
721 | */ | |
722 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
723 | { | |
724 | struct video_device *dev = priv; | |
725 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
726 | int ret; | |
727 | ||
728 | if (i > 1) | |
729 | return -EINVAL; | |
730 | ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0); | |
731 | ||
732 | if (!ret) | |
733 | vip->input = i; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | /** | |
739 | * vidioc_g_input - return input line | |
740 | * @file: descriptor of device ( not used) | |
741 | * @priv: points to current videodevice | |
742 | * @i: returned input line number | |
743 | * | |
744 | * the current active input line is returned | |
745 | * | |
746 | * return value: always 0. | |
747 | */ | |
748 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
749 | { | |
750 | struct video_device *dev = priv; | |
751 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
752 | ||
753 | *i = vip->input; | |
754 | return 0; | |
755 | } | |
756 | ||
757 | /** | |
758 | * vidioc_enum_fmt_vid_cap - return video capture format | |
759 | * @file: descriptor of device ( not used) | |
760 | * @priv: points to current videodevice | |
761 | * @f: returned format information | |
762 | * | |
763 | * returns name and format of video capture | |
764 | * Only UYVY is supported by hardware. | |
765 | * | |
766 | * return value: always 0. | |
767 | */ | |
768 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
769 | struct v4l2_fmtdesc *f) | |
770 | { | |
771 | ||
772 | if (f->index != 0) | |
773 | return -EINVAL; | |
774 | ||
775 | strcpy(f->description, "4:2:2, packed, UYVY"); | |
776 | f->pixelformat = V4L2_PIX_FMT_UYVY; | |
777 | f->flags = 0; | |
778 | return 0; | |
779 | } | |
780 | ||
781 | /** | |
782 | * vidioc_try_fmt_vid_cap - set video capture format | |
783 | * @file: descriptor of device ( not used) | |
784 | * @priv: points to current videodevice | |
785 | * @f: new format | |
786 | * | |
787 | * new video format is set which includes width and | |
788 | * field type. width is fixed to 720, no scaling. | |
789 | * Only UYVY is supported by this hardware. | |
790 | * the minimum height is 200, the maximum is 576 (PAL) | |
791 | * | |
792 | * return value: 0, no error | |
793 | * | |
794 | * -EINVAL, pixel or field format not supported | |
795 | * | |
796 | */ | |
797 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
798 | struct v4l2_format *f) | |
799 | { | |
800 | struct video_device *dev = priv; | |
801 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
802 | int interlace_lim; | |
803 | ||
804 | if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) | |
805 | return -EINVAL; | |
806 | ||
6ae009a8 | 807 | if (V4L2_STD_525_60 & vip->std) |
efeb98b4 FV |
808 | interlace_lim = 240; |
809 | else | |
810 | interlace_lim = 288; | |
811 | ||
812 | switch (f->fmt.pix.field) { | |
813 | case V4L2_FIELD_ANY: | |
814 | if (interlace_lim < f->fmt.pix.height) | |
815 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
816 | else | |
817 | f->fmt.pix.field = V4L2_FIELD_BOTTOM; | |
818 | break; | |
819 | case V4L2_FIELD_TOP: | |
820 | case V4L2_FIELD_BOTTOM: | |
821 | if (interlace_lim < f->fmt.pix.height) | |
822 | f->fmt.pix.height = interlace_lim; | |
823 | break; | |
824 | case V4L2_FIELD_INTERLACED: | |
825 | break; | |
826 | default: | |
827 | return -EINVAL; | |
828 | } | |
829 | ||
830 | f->fmt.pix.height &= ~1; | |
831 | if (2 * interlace_lim < f->fmt.pix.height) | |
832 | f->fmt.pix.height = 2 * interlace_lim; | |
833 | if (200 > f->fmt.pix.height) | |
834 | f->fmt.pix.height = 200; | |
835 | f->fmt.pix.width = 720; | |
836 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
837 | f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height; | |
838 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
839 | f->fmt.pix.priv = 0; | |
840 | return 0; | |
841 | } | |
842 | ||
843 | /** | |
844 | * vidioc_s_fmt_vid_cap - set current video format parameters | |
845 | * @file: descriptor of device ( not used) | |
846 | * @priv: points to current videodevice | |
847 | * @f: returned format information | |
848 | * | |
849 | * set new capture format | |
850 | * return value: 0, no error | |
851 | * | |
852 | * other, delivered by video DAC routine. | |
853 | */ | |
854 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
855 | struct v4l2_format *f) | |
856 | { | |
857 | struct video_device *dev = priv; | |
858 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
859 | int ret; | |
860 | ||
861 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
862 | if (ret) | |
863 | return ret; | |
864 | ||
865 | memcpy(&vip->format, &f->fmt.pix, sizeof(struct v4l2_pix_format)); | |
866 | return 0; | |
867 | } | |
868 | ||
869 | /** | |
870 | * vidioc_g_fmt_vid_cap - get current video format parameters | |
871 | * @file: descriptor of device ( not used) | |
872 | * @priv: points to current videodevice | |
873 | * @f: contains format information | |
874 | * | |
875 | * returns current video format parameters | |
876 | * | |
877 | * return value: 0, always successful | |
878 | */ | |
879 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
880 | struct v4l2_format *f) | |
881 | { | |
882 | struct video_device *dev = priv; | |
883 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
884 | ||
885 | memcpy(&f->fmt.pix, &vip->format, sizeof(struct v4l2_pix_format)); | |
886 | return 0; | |
887 | } | |
888 | ||
889 | /** | |
890 | * vidioc_reqfs - request buffer | |
891 | * @file: descriptor of device ( not used) | |
892 | * @priv: points to current videodevice | |
893 | * @p: video buffer | |
894 | * | |
895 | * Handling is done in generic videobuf layer. | |
896 | */ | |
897 | static int vidioc_reqbufs(struct file *file, void *priv, | |
898 | struct v4l2_requestbuffers *p) | |
899 | { | |
900 | struct video_device *dev = priv; | |
901 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
902 | ||
903 | return videobuf_reqbufs(&vip->vb_vidq, p); | |
904 | } | |
905 | ||
906 | /** | |
907 | * vidioc_querybuf - query buffer | |
908 | * @file: descriptor of device ( not used) | |
909 | * @priv: points to current videodevice | |
910 | * @p: video buffer | |
911 | * | |
912 | * query buffer state. | |
913 | * Handling is done in generic videobuf layer. | |
914 | */ | |
915 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) | |
916 | { | |
917 | struct video_device *dev = priv; | |
918 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
919 | ||
920 | return videobuf_querybuf(&vip->vb_vidq, p); | |
921 | } | |
922 | ||
923 | /** | |
924 | * vidioc_qbuf - queue a buffer | |
925 | * @file: descriptor of device ( not used) | |
926 | * @priv: points to current videodevice | |
927 | * @p: video buffer | |
928 | * | |
929 | * Handling is done in generic videobuf layer. | |
930 | */ | |
931 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) | |
932 | { | |
933 | struct video_device *dev = priv; | |
934 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
935 | ||
936 | return videobuf_qbuf(&vip->vb_vidq, p); | |
937 | } | |
938 | ||
939 | /** | |
940 | * vidioc_dqbuf - dequeue a buffer | |
941 | * @file: descriptor of device ( not used) | |
942 | * @priv: points to current videodevice | |
943 | * @p: video buffer | |
944 | * | |
945 | * Handling is done in generic videobuf layer. | |
946 | */ | |
947 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) | |
948 | { | |
949 | struct video_device *dev = priv; | |
950 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
951 | ||
952 | return videobuf_dqbuf(&vip->vb_vidq, p, file->f_flags & O_NONBLOCK); | |
953 | } | |
954 | ||
955 | /** | |
956 | * vidioc_streamon - turn on streaming | |
957 | * @file: descriptor of device ( not used) | |
958 | * @priv: points to current videodevice | |
959 | * @type: type of capture | |
960 | * | |
961 | * turn on streaming. | |
962 | * Handling is done in generic videobuf layer. | |
963 | */ | |
964 | static int vidioc_streamon(struct file *file, void *priv, | |
965 | enum v4l2_buf_type type) | |
966 | { | |
967 | struct video_device *dev = priv; | |
968 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
969 | ||
970 | return videobuf_streamon(&vip->vb_vidq); | |
971 | } | |
972 | ||
973 | /** | |
974 | * vidioc_streamoff - turn off streaming | |
975 | * @file: descriptor of device ( not used) | |
976 | * @priv: points to current videodevice | |
977 | * @type: type of capture | |
978 | * | |
979 | * turn off streaming. | |
980 | * Handling is done in generic videobuf layer. | |
981 | */ | |
982 | static int vidioc_streamoff(struct file *file, void *priv, | |
983 | enum v4l2_buf_type type) | |
984 | { | |
985 | struct video_device *dev = priv; | |
986 | struct sta2x11_vip *vip = video_get_drvdata(dev); | |
987 | ||
988 | return videobuf_streamoff(&vip->vb_vidq); | |
989 | } | |
990 | ||
991 | static const struct v4l2_file_operations vip_fops = { | |
992 | .owner = THIS_MODULE, | |
993 | .open = vip_open, | |
994 | .release = vip_close, | |
995 | .ioctl = video_ioctl2, | |
996 | .read = vip_read, | |
997 | .mmap = vip_mmap, | |
998 | .poll = vip_poll | |
999 | }; | |
1000 | ||
1001 | static const struct v4l2_ioctl_ops vip_ioctl_ops = { | |
1002 | .vidioc_querycap = vidioc_querycap, | |
1003 | .vidioc_s_std = vidioc_s_std, | |
1004 | .vidioc_g_std = vidioc_g_std, | |
1005 | .vidioc_querystd = vidioc_querystd, | |
1006 | .vidioc_queryctrl = vidioc_queryctrl, | |
1007 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1008 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1009 | .vidioc_enum_input = vidioc_enum_input, | |
1010 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1011 | .vidioc_s_input = vidioc_s_input, | |
1012 | .vidioc_g_input = vidioc_g_input, | |
1013 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
1014 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
1015 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1016 | .vidioc_reqbufs = vidioc_reqbufs, | |
1017 | .vidioc_querybuf = vidioc_querybuf, | |
1018 | .vidioc_qbuf = vidioc_qbuf, | |
1019 | .vidioc_dqbuf = vidioc_dqbuf, | |
1020 | .vidioc_streamon = vidioc_streamon, | |
1021 | .vidioc_streamoff = vidioc_streamoff, | |
1022 | }; | |
1023 | ||
1024 | static struct video_device video_dev_template = { | |
1025 | .name = DRV_NAME, | |
1026 | .release = video_device_release, | |
1027 | .fops = &vip_fops, | |
1028 | .ioctl_ops = &vip_ioctl_ops, | |
1029 | .tvnorms = V4L2_STD_ALL, | |
1030 | }; | |
1031 | ||
1032 | /** | |
1033 | * vip_irq - interrupt routine | |
1034 | * @irq: Number of interrupt ( not used, correct number is assumed ) | |
1035 | * @vip: local data structure containing all information | |
1036 | * | |
1037 | * check for both frame interrupts set ( top and bottom ). | |
1038 | * check FIFO overflow, but limit number of log messages after open. | |
1039 | * signal a complete buffer if done. | |
1040 | * dequeue a new buffer if available. | |
1041 | * disable VIP if no buffer available. | |
1042 | * | |
1043 | * return value: IRQ_NONE, interrupt was not generated by VIP | |
1044 | * | |
1045 | * IRQ_HANDLED, interrupt done. | |
1046 | */ | |
1047 | static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip) | |
1048 | { | |
1049 | u32 status, dma; | |
1050 | unsigned long flags; | |
1051 | struct videobuf_buffer *vb; | |
1052 | ||
1053 | status = REG_READ(vip, DVP_ITS); | |
1054 | ||
1055 | if (!status) { | |
1056 | pr_debug("VIP: irq ignored\n"); | |
1057 | return IRQ_NONE; | |
1058 | } | |
1059 | ||
1060 | if (!vip->started) | |
1061 | return IRQ_HANDLED; | |
1062 | ||
1063 | if (status & DVP_IT_VSB) | |
1064 | vip->bcount++; | |
1065 | ||
1066 | if (status & DVP_IT_VST) | |
1067 | vip->tcount++; | |
1068 | ||
1069 | if ((DVP_IT_VSB | DVP_IT_VST) == (status & (DVP_IT_VST | DVP_IT_VSB))) { | |
1070 | /* this is bad, we are too slow, hope the condition is gone | |
1071 | * on the next frame */ | |
1072 | pr_info("VIP: both irqs\n"); | |
1073 | return IRQ_HANDLED; | |
1074 | } | |
1075 | ||
1076 | if (status & DVP_IT_FIFO) { | |
1077 | if (5 > vip->overflow++) | |
1078 | pr_info("VIP: fifo overflow\n"); | |
1079 | } | |
1080 | ||
1081 | if (2 > vip->tcount) | |
1082 | return IRQ_HANDLED; | |
1083 | ||
1084 | if (status & DVP_IT_VSB) | |
1085 | return IRQ_HANDLED; | |
1086 | ||
1087 | spin_lock_irqsave(&vip->slock, flags); | |
1088 | ||
1089 | REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) & ~DVP_CTL_ENA); | |
1090 | if (vip->active) { | |
1091 | do_gettimeofday(&vip->active->ts); | |
1092 | vip->active->field_count++; | |
1093 | vip->active->state = VIDEOBUF_DONE; | |
1094 | wake_up(&vip->active->done); | |
1095 | vip->active = NULL; | |
1096 | } | |
1097 | if (!vip->closing) { | |
1098 | if (list_empty(&vip->capture)) | |
1099 | goto done; | |
1100 | ||
1101 | vb = list_first_entry(&vip->capture, struct videobuf_buffer, | |
1102 | queue); | |
1103 | if (NULL == vb) { | |
1104 | pr_info("VIP: no buffer\n"); | |
1105 | goto done; | |
1106 | } | |
1107 | vb->state = VIDEOBUF_ACTIVE; | |
1108 | list_del(&vb->queue); | |
1109 | vip->active = vb; | |
1110 | dma = videobuf_to_dma_contig(vb); | |
1111 | switch (vip->format.field) { | |
1112 | case V4L2_FIELD_INTERLACED: | |
1113 | REG_WRITE(vip, DVP_VTP, dma); | |
1114 | REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2); | |
1115 | break; | |
1116 | case V4L2_FIELD_TOP: | |
1117 | case V4L2_FIELD_BOTTOM: | |
1118 | REG_WRITE(vip, DVP_VTP, dma); | |
1119 | REG_WRITE(vip, DVP_VBP, dma); | |
1120 | break; | |
1121 | default: | |
1122 | pr_warning("VIP: unknown field format\n"); | |
1123 | goto done; | |
1124 | break; | |
1125 | } | |
1126 | REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) | DVP_CTL_ENA); | |
1127 | } | |
1128 | done: | |
1129 | spin_unlock_irqrestore(&vip->slock, flags); | |
1130 | return IRQ_HANDLED; | |
1131 | } | |
1132 | ||
1133 | /** | |
1134 | * vip_gpio_reserve - reserve gpio pin | |
1135 | * @dev: device | |
1136 | * @pin: GPIO pin number | |
1137 | * @dir: direction, input or output | |
1138 | * @name: GPIO pin name | |
1139 | * | |
1140 | */ | |
1141 | static int vip_gpio_reserve(struct device *dev, int pin, int dir, | |
1142 | const char *name) | |
1143 | { | |
1144 | int ret; | |
1145 | ||
1146 | if (pin == -1) | |
1147 | return 0; | |
1148 | ||
1149 | ret = gpio_request(pin, name); | |
1150 | if (ret) { | |
1151 | dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name); | |
1152 | return ret; | |
1153 | } | |
1154 | ||
1155 | ret = gpio_direction_output(pin, dir); | |
1156 | if (ret) { | |
1157 | dev_err(dev, "Failed to set direction for pin %d (%s)\n", | |
1158 | pin, name); | |
1159 | gpio_free(pin); | |
1160 | return ret; | |
1161 | } | |
1162 | ||
1163 | ret = gpio_export(pin, false); | |
1164 | if (ret) { | |
1165 | dev_err(dev, "Failed to export pin %d (%s)\n", pin, name); | |
1166 | gpio_free(pin); | |
1167 | return ret; | |
1168 | } | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
1173 | /** | |
1174 | * vip_gpio_release - release gpio pin | |
1175 | * @dev: device | |
1176 | * @pin: GPIO pin number | |
1177 | * @name: GPIO pin name | |
1178 | * | |
1179 | */ | |
1180 | static void vip_gpio_release(struct device *dev, int pin, const char *name) | |
1181 | { | |
1182 | if (pin != -1) { | |
1183 | dev_dbg(dev, "releasing pin %d (%s)\n", pin, name); | |
1184 | gpio_unexport(pin); | |
1185 | gpio_free(pin); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /** | |
1190 | * sta2x11_vip_init_one - init one instance of video device | |
1191 | * @pdev: PCI device | |
1192 | * @ent: (not used) | |
1193 | * | |
1194 | * allocate reset pins for DAC. | |
1195 | * Reset video DAC, this is done via reset line. | |
1196 | * allocate memory for managing device | |
1197 | * request interrupt | |
1198 | * map IO region | |
1199 | * register device | |
1200 | * find and initialize video DAC | |
1201 | * | |
1202 | * return value: 0, no error | |
1203 | * | |
1204 | * -ENOMEM, no memory | |
1205 | * | |
1206 | * -ENODEV, device could not be detected or registered | |
1207 | */ | |
4c62e976 GKH |
1208 | static int sta2x11_vip_init_one(struct pci_dev *pdev, |
1209 | const struct pci_device_id *ent) | |
efeb98b4 FV |
1210 | { |
1211 | int ret; | |
1212 | struct sta2x11_vip *vip; | |
1213 | struct vip_config *config; | |
1214 | ||
1215 | ret = pci_enable_device(pdev); | |
1216 | if (ret) | |
1217 | return ret; | |
1218 | ||
1219 | config = dev_get_platdata(&pdev->dev); | |
1220 | if (!config) { | |
1221 | dev_info(&pdev->dev, "VIP slot disabled\n"); | |
1222 | ret = -EINVAL; | |
1223 | goto disable; | |
1224 | } | |
1225 | ||
1226 | ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0, | |
1227 | config->pwr_name); | |
1228 | if (ret) | |
1229 | goto disable; | |
1230 | ||
1231 | if (config->reset_pin >= 0) { | |
1232 | ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0, | |
1233 | config->reset_name); | |
1234 | if (ret) { | |
1235 | vip_gpio_release(&pdev->dev, config->pwr_pin, | |
1236 | config->pwr_name); | |
1237 | goto disable; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | if (config->pwr_pin != -1) { | |
1242 | /* Datasheet says 5ms between PWR and RST */ | |
1243 | usleep_range(5000, 25000); | |
1244 | ret = gpio_direction_output(config->pwr_pin, 1); | |
1245 | } | |
1246 | ||
1247 | if (config->reset_pin != -1) { | |
1248 | /* Datasheet says 5ms between PWR and RST */ | |
1249 | usleep_range(5000, 25000); | |
1250 | ret = gpio_direction_output(config->reset_pin, 1); | |
1251 | } | |
1252 | usleep_range(5000, 25000); | |
1253 | ||
1254 | vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL); | |
1255 | if (!vip) { | |
1256 | ret = -ENOMEM; | |
1257 | goto release_gpios; | |
1258 | } | |
1259 | ||
1260 | vip->pdev = pdev; | |
1261 | vip->std = V4L2_STD_PAL; | |
1262 | vip->format = formats_50[0]; | |
1263 | vip->config = config; | |
1264 | ||
1265 | if (v4l2_device_register(&pdev->dev, &vip->v4l2_dev)) | |
1266 | goto free_mem; | |
1267 | ||
1268 | dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n", | |
1269 | (unsigned long)pci_resource_start(pdev, 0), | |
1270 | (unsigned long)pci_resource_len(pdev, 0), pdev->irq); | |
1271 | ||
1272 | pci_set_master(pdev); | |
1273 | ||
1274 | ret = pci_request_regions(pdev, DRV_NAME); | |
1275 | if (ret) | |
1276 | goto unreg; | |
1277 | ||
1278 | vip->iomem = pci_iomap(pdev, 0, 0x100); | |
1279 | if (!vip->iomem) { | |
1280 | ret = -ENOMEM; /* FIXME */ | |
1281 | goto release; | |
1282 | } | |
1283 | ||
1284 | pci_enable_msi(pdev); | |
1285 | ||
1286 | INIT_LIST_HEAD(&vip->capture); | |
1287 | spin_lock_init(&vip->slock); | |
1288 | mutex_init(&vip->mutex); | |
1289 | vip->started = 0; | |
1290 | vip->disabled = 0; | |
1291 | ||
1292 | ret = request_irq(pdev->irq, | |
1293 | (irq_handler_t) vip_irq, | |
1294 | IRQF_SHARED, DRV_NAME, vip); | |
1295 | if (ret) { | |
1296 | dev_err(&pdev->dev, "request_irq failed\n"); | |
1297 | ret = -ENODEV; | |
1298 | goto unmap; | |
1299 | } | |
1300 | ||
1301 | vip->video_dev = video_device_alloc(); | |
1302 | if (!vip->video_dev) { | |
1303 | ret = -ENOMEM; | |
1304 | goto release_irq; | |
1305 | } | |
1306 | ||
1307 | *(vip->video_dev) = video_dev_template; | |
1308 | video_set_drvdata(vip->video_dev, vip); | |
1309 | ||
1310 | ret = video_register_device(vip->video_dev, VFL_TYPE_GRABBER, -1); | |
1311 | if (ret) | |
1312 | goto vrelease; | |
1313 | ||
1314 | vip->adapter = i2c_get_adapter(vip->config->i2c_id); | |
1315 | if (!vip->adapter) { | |
1316 | ret = -ENODEV; | |
1317 | dev_err(&pdev->dev, "no I2C adapter found\n"); | |
1318 | goto vunreg; | |
1319 | } | |
1320 | ||
1321 | vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter, | |
1322 | "adv7180", vip->config->i2c_addr, | |
1323 | NULL); | |
1324 | if (!vip->decoder) { | |
1325 | ret = -ENODEV; | |
1326 | dev_err(&pdev->dev, "no decoder found\n"); | |
1327 | goto vunreg; | |
1328 | } | |
1329 | ||
1330 | i2c_put_adapter(vip->adapter); | |
1331 | ||
1332 | v4l2_subdev_call(vip->decoder, core, init, 0); | |
1333 | ||
1334 | pr_info("STA2X11 Video Input Port (VIP) loaded\n"); | |
1335 | return 0; | |
1336 | ||
1337 | vunreg: | |
1338 | video_set_drvdata(vip->video_dev, NULL); | |
1339 | vrelease: | |
1340 | if (video_is_registered(vip->video_dev)) | |
1341 | video_unregister_device(vip->video_dev); | |
1342 | else | |
1343 | video_device_release(vip->video_dev); | |
1344 | release_irq: | |
1345 | free_irq(pdev->irq, vip); | |
1346 | pci_disable_msi(pdev); | |
1347 | unmap: | |
1348 | pci_iounmap(pdev, vip->iomem); | |
1349 | mutex_destroy(&vip->mutex); | |
1350 | release: | |
1351 | pci_release_regions(pdev); | |
1352 | unreg: | |
1353 | v4l2_device_unregister(&vip->v4l2_dev); | |
1354 | free_mem: | |
1355 | kfree(vip); | |
1356 | release_gpios: | |
1357 | vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name); | |
1358 | vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name); | |
1359 | disable: | |
1360 | /* | |
1361 | * do not call pci_disable_device on sta2x11 because it break all | |
1362 | * other Bus masters on this EP | |
1363 | */ | |
1364 | return ret; | |
1365 | } | |
1366 | ||
1367 | /** | |
1368 | * sta2x11_vip_remove_one - release device | |
1369 | * @pdev: PCI device | |
1370 | * | |
1371 | * Undo everything done in .._init_one | |
1372 | * | |
1373 | * unregister video device | |
1374 | * free interrupt | |
1375 | * unmap ioadresses | |
1376 | * free memory | |
1377 | * free GPIO pins | |
1378 | */ | |
4c62e976 | 1379 | static void sta2x11_vip_remove_one(struct pci_dev *pdev) |
efeb98b4 FV |
1380 | { |
1381 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); | |
1382 | struct sta2x11_vip *vip = | |
1383 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); | |
1384 | ||
1385 | video_set_drvdata(vip->video_dev, NULL); | |
1386 | video_unregister_device(vip->video_dev); | |
1387 | /*do not call video_device_release() here, is already done */ | |
1388 | free_irq(pdev->irq, vip); | |
1389 | pci_disable_msi(pdev); | |
1390 | pci_iounmap(pdev, vip->iomem); | |
1391 | pci_release_regions(pdev); | |
1392 | ||
1393 | v4l2_device_unregister(&vip->v4l2_dev); | |
1394 | mutex_destroy(&vip->mutex); | |
1395 | ||
1396 | vip_gpio_release(&pdev->dev, vip->config->pwr_pin, | |
1397 | vip->config->pwr_name); | |
1398 | vip_gpio_release(&pdev->dev, vip->config->reset_pin, | |
1399 | vip->config->reset_name); | |
1400 | ||
1401 | kfree(vip); | |
1402 | /* | |
1403 | * do not call pci_disable_device on sta2x11 because it break all | |
1404 | * other Bus masters on this EP | |
1405 | */ | |
1406 | } | |
1407 | ||
1408 | #ifdef CONFIG_PM | |
1409 | ||
1410 | /** | |
1411 | * sta2x11_vip_suspend - set device into power save mode | |
1412 | * @pdev: PCI device | |
1413 | * @state: new state of device | |
1414 | * | |
1415 | * all relevant registers are saved and an attempt to set a new state is made. | |
1416 | * | |
1417 | * return value: 0 always indicate success, | |
1418 | * even if device could not be disabled. (workaround for hardware problem) | |
1419 | * | |
1420 | * reurn value : 0, always succesful, even if hardware does not not support | |
1421 | * power down mode. | |
1422 | */ | |
1423 | static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state) | |
1424 | { | |
1425 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); | |
1426 | struct sta2x11_vip *vip = | |
1427 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); | |
1428 | unsigned long flags; | |
1429 | int i; | |
1430 | ||
1431 | spin_lock_irqsave(&vip->slock, flags); | |
1432 | vip->register_save_area[0] = REG_READ(vip, DVP_CTL); | |
1433 | REG_WRITE(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS); | |
1434 | vip->register_save_area[SAVE_COUNT] = REG_READ(vip, DVP_ITM); | |
1435 | REG_WRITE(vip, DVP_ITM, 0); | |
1436 | for (i = 1; i < SAVE_COUNT; i++) | |
1437 | vip->register_save_area[i] = REG_READ(vip, 4 * i); | |
1438 | for (i = 0; i < AUX_COUNT; i++) | |
1439 | vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] = | |
1440 | REG_READ(vip, registers_to_save[i]); | |
1441 | spin_unlock_irqrestore(&vip->slock, flags); | |
1442 | /* save pci state */ | |
1443 | pci_save_state(pdev); | |
1444 | if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) { | |
1445 | /* | |
1446 | * do not call pci_disable_device on sta2x11 because it | |
1447 | * break all other Bus masters on this EP | |
1448 | */ | |
1449 | vip->disabled = 1; | |
1450 | } | |
1451 | ||
1452 | pr_info("VIP: suspend\n"); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | /** | |
1457 | * sta2x11_vip_resume - resume device operation | |
1458 | * @pdev : PCI device | |
1459 | * | |
1460 | * re-enable device, set PCI state to powered and restore registers. | |
1461 | * resume normal device operation afterwards. | |
1462 | * | |
1463 | * return value: 0, no error. | |
1464 | * | |
1465 | * other, could not set device to power on state. | |
1466 | */ | |
1467 | static int sta2x11_vip_resume(struct pci_dev *pdev) | |
1468 | { | |
1469 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); | |
1470 | struct sta2x11_vip *vip = | |
1471 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); | |
1472 | unsigned long flags; | |
1473 | int ret, i; | |
1474 | ||
1475 | pr_info("VIP: resume\n"); | |
1476 | /* restore pci state */ | |
1477 | if (vip->disabled) { | |
1478 | ret = pci_enable_device(pdev); | |
1479 | if (ret) { | |
1480 | pr_warning("VIP: Can't enable device.\n"); | |
1481 | return ret; | |
1482 | } | |
1483 | vip->disabled = 0; | |
1484 | } | |
1485 | ret = pci_set_power_state(pdev, PCI_D0); | |
1486 | if (ret) { | |
1487 | /* | |
1488 | * do not call pci_disable_device on sta2x11 because it | |
1489 | * break all other Bus masters on this EP | |
1490 | */ | |
1491 | pr_warning("VIP: Can't enable device.\n"); | |
1492 | vip->disabled = 1; | |
1493 | return ret; | |
1494 | } | |
1495 | ||
1496 | pci_restore_state(pdev); | |
1497 | ||
1498 | spin_lock_irqsave(&vip->slock, flags); | |
1499 | for (i = 1; i < SAVE_COUNT; i++) | |
1500 | REG_WRITE(vip, 4 * i, vip->register_save_area[i]); | |
1501 | for (i = 0; i < AUX_COUNT; i++) | |
1502 | REG_WRITE(vip, registers_to_save[i], | |
1503 | vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]); | |
1504 | REG_WRITE(vip, DVP_CTL, vip->register_save_area[0]); | |
1505 | REG_WRITE(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]); | |
1506 | spin_unlock_irqrestore(&vip->slock, flags); | |
1507 | return 0; | |
1508 | } | |
1509 | ||
1510 | #endif | |
1511 | ||
1512 | static DEFINE_PCI_DEVICE_TABLE(sta2x11_vip_pci_tbl) = { | |
1513 | {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)}, | |
1514 | {0,} | |
1515 | }; | |
1516 | ||
1517 | static struct pci_driver sta2x11_vip_driver = { | |
1518 | .name = DRV_NAME, | |
1519 | .probe = sta2x11_vip_init_one, | |
4c62e976 | 1520 | .remove = sta2x11_vip_remove_one, |
efeb98b4 FV |
1521 | .id_table = sta2x11_vip_pci_tbl, |
1522 | #ifdef CONFIG_PM | |
1523 | .suspend = sta2x11_vip_suspend, | |
1524 | .resume = sta2x11_vip_resume, | |
1525 | #endif | |
1526 | }; | |
1527 | ||
1528 | static int __init sta2x11_vip_init_module(void) | |
1529 | { | |
1530 | return pci_register_driver(&sta2x11_vip_driver); | |
1531 | } | |
1532 | ||
1533 | static void __exit sta2x11_vip_exit_module(void) | |
1534 | { | |
1535 | pci_unregister_driver(&sta2x11_vip_driver); | |
1536 | } | |
1537 | ||
1538 | #ifdef MODULE | |
1539 | module_init(sta2x11_vip_init_module); | |
1540 | module_exit(sta2x11_vip_exit_module); | |
1541 | #else | |
1542 | late_initcall_sync(sta2x11_vip_init_module); | |
1543 | #endif | |
1544 | ||
1545 | MODULE_DESCRIPTION("STA2X11 Video Input Port driver"); | |
1546 | MODULE_AUTHOR("Wind River"); | |
1547 | MODULE_LICENSE("GPL v2"); | |
1548 | MODULE_SUPPORTED_DEVICE("sta2x11 video input"); | |
1549 | MODULE_VERSION(DRV_VERSION); | |
1550 | MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl); |