Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/media/pci/sta2x11/sta2x11_vip.c

  1 /*
  2  * This is the driver for the STA2x11 Video Input Port.
  3  *
  4  * Copyright (C) 2012       ST Microelectronics
  5  *     author: Federico Vaga <federico.vaga@gmail.com>
  6  * Copyright (C) 2010       WindRiver Systems, Inc.
  7  *     authors: Andreas Kies <andreas.kies@windriver.com>
  8  *              Vlad Lungu   <vlad.lungu@windriver.com>
  9  *
 10  * This program is free software; you can redistribute it and/or modify it
 11  * under the terms and conditions of the GNU General Public License,
 12  * version 2, as published by the Free Software Foundation.
 13  *
 14  * This program is distributed in the hope it will be useful, but WITHOUT
 15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 17  * more details.
 18  *
 19  * You should have received a copy of the GNU General Public License along with
 20  * this program; if not, write to the Free Software Foundation, Inc.,
 21  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 22  *
 23  * The full GNU General Public License is included in this distribution in
 24  * the file called "COPYING".
 25  *
 26  */
 27 
 28 #include <linux/types.h>
 29 #include <linux/kernel.h>
 30 #include <linux/module.h>
 31 #include <linux/init.h>
 32 #include <linux/videodev2.h>
 33 #include <linux/kmod.h>
 34 #include <linux/pci.h>
 35 #include <linux/interrupt.h>
 36 #include <linux/io.h>
 37 #include <linux/gpio.h>
 38 #include <linux/i2c.h>
 39 #include <linux/delay.h>
 40 #include <media/v4l2-common.h>
 41 #include <media/v4l2-device.h>
 42 #include <media/v4l2-ctrls.h>
 43 #include <media/v4l2-ioctl.h>
 44 #include <media/v4l2-fh.h>
 45 #include <media/v4l2-event.h>
 46 #include <media/videobuf2-dma-contig.h>
 47 
 48 #include "sta2x11_vip.h"
 49 
 50 #define DRV_VERSION "1.3"
 51 
 52 #ifndef PCI_DEVICE_ID_STMICRO_VIP
 53 #define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D
 54 #endif
 55 
 56 #define MAX_FRAMES 4
 57 
 58 /*Register offsets*/
 59 #define DVP_CTL         0x00
 60 #define DVP_TFO         0x04
 61 #define DVP_TFS         0x08
 62 #define DVP_BFO         0x0C
 63 #define DVP_BFS         0x10
 64 #define DVP_VTP         0x14
 65 #define DVP_VBP         0x18
 66 #define DVP_VMP         0x1C
 67 #define DVP_ITM         0x98
 68 #define DVP_ITS         0x9C
 69 #define DVP_STA         0xA0
 70 #define DVP_HLFLN       0xA8
 71 #define DVP_RGB         0xC0
 72 #define DVP_PKZ         0xF0
 73 
 74 /*Register fields*/
 75 #define DVP_CTL_ENA     0x00000001
 76 #define DVP_CTL_RST     0x80000000
 77 #define DVP_CTL_DIS     (~0x00040001)
 78 
 79 #define DVP_IT_VSB      0x00000008
 80 #define DVP_IT_VST      0x00000010
 81 #define DVP_IT_FIFO     0x00000020
 82 
 83 #define DVP_HLFLN_SD    0x00000001
 84 
 85 #define SAVE_COUNT 8
 86 #define AUX_COUNT 3
 87 #define IRQ_COUNT 1
 88 
 89 
 90 struct vip_buffer {
 91         struct vb2_buffer       vb;
 92         struct list_head        list;
 93         dma_addr_t              dma;
 94 };
 95 static inline struct vip_buffer *to_vip_buffer(struct vb2_buffer *vb2)
 96 {
 97         return container_of(vb2, struct vip_buffer, vb);
 98 }
 99 
100 /**
101  * struct sta2x11_vip - All internal data for one instance of device
102  * @v4l2_dev: device registered in v4l layer
103  * @video_dev: properties of our device
104  * @pdev: PCI device
105  * @adapter: contains I2C adapter information
106  * @register_save_area: All relevant register are saved here during suspend
107  * @decoder: contains information about video DAC
108  * @ctrl_hdl: handler for control framework
109  * @format: pixel format, fixed UYVY
110  * @std: video standard (e.g. PAL/NTSC)
111  * @input: input line for video signal ( 0 or 1 )
112  * @disabled: Device is in power down state
113  * @slock: for excluse acces of registers
114  * @alloc_ctx: context for videobuf2
115  * @vb_vidq: queue maintained by videobuf2 layer
116  * @buffer_list: list of buffer in use
117  * @sequence: sequence number of acquired buffer
118  * @active: current active buffer
119  * @lock: used in videobuf2 callback
120  * @tcount: Number of top frames
121  * @bcount: Number of bottom frames
122  * @overflow: Number of FIFO overflows
123  * @iomem: hardware base address
124  * @config: I2C and gpio config from platform
125  *
126  * All non-local data is accessed via this structure.
127  */
128 struct sta2x11_vip {
129         struct v4l2_device v4l2_dev;
130         struct video_device *video_dev;
131         struct pci_dev *pdev;
132         struct i2c_adapter *adapter;
133         unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT];
134         struct v4l2_subdev *decoder;
135         struct v4l2_ctrl_handler ctrl_hdl;
136 
137 
138         struct v4l2_pix_format format;
139         v4l2_std_id std;
140         unsigned int input;
141         int disabled;
142         spinlock_t slock;
143 
144         struct vb2_alloc_ctx *alloc_ctx;
145         struct vb2_queue vb_vidq;
146         struct list_head buffer_list;
147         unsigned int sequence;
148         struct vip_buffer *active; /* current active buffer */
149         spinlock_t lock; /* Used in videobuf2 callback */
150 
151         /* Interrupt counters */
152         int tcount, bcount;
153         int overflow;
154 
155         void *iomem;    /* I/O Memory */
156         struct vip_config *config;
157 };
158 
159 static const unsigned int registers_to_save[AUX_COUNT] = {
160         DVP_HLFLN, DVP_RGB, DVP_PKZ
161 };
162 
163 static struct v4l2_pix_format formats_50[] = {
164         {                       /*PAL interlaced */
165          .width = 720,
166          .height = 576,
167          .pixelformat = V4L2_PIX_FMT_UYVY,
168          .field = V4L2_FIELD_INTERLACED,
169          .bytesperline = 720 * 2,
170          .sizeimage = 720 * 2 * 576,
171          .colorspace = V4L2_COLORSPACE_SMPTE170M},
172         {                       /*PAL top */
173          .width = 720,
174          .height = 288,
175          .pixelformat = V4L2_PIX_FMT_UYVY,
176          .field = V4L2_FIELD_TOP,
177          .bytesperline = 720 * 2,
178          .sizeimage = 720 * 2 * 288,
179          .colorspace = V4L2_COLORSPACE_SMPTE170M},
180         {                       /*PAL bottom */
181          .width = 720,
182          .height = 288,
183          .pixelformat = V4L2_PIX_FMT_UYVY,
184          .field = V4L2_FIELD_BOTTOM,
185          .bytesperline = 720 * 2,
186          .sizeimage = 720 * 2 * 288,
187          .colorspace = V4L2_COLORSPACE_SMPTE170M},
188 
189 };
190 
191 static struct v4l2_pix_format formats_60[] = {
192         {                       /*NTSC interlaced */
193          .width = 720,
194          .height = 480,
195          .pixelformat = V4L2_PIX_FMT_UYVY,
196          .field = V4L2_FIELD_INTERLACED,
197          .bytesperline = 720 * 2,
198          .sizeimage = 720 * 2 * 480,
199          .colorspace = V4L2_COLORSPACE_SMPTE170M},
200         {                       /*NTSC top */
201          .width = 720,
202          .height = 240,
203          .pixelformat = V4L2_PIX_FMT_UYVY,
204          .field = V4L2_FIELD_TOP,
205          .bytesperline = 720 * 2,
206          .sizeimage = 720 * 2 * 240,
207          .colorspace = V4L2_COLORSPACE_SMPTE170M},
208         {                       /*NTSC bottom */
209          .width = 720,
210          .height = 240,
211          .pixelformat = V4L2_PIX_FMT_UYVY,
212          .field = V4L2_FIELD_BOTTOM,
213          .bytesperline = 720 * 2,
214          .sizeimage = 720 * 2 * 240,
215          .colorspace = V4L2_COLORSPACE_SMPTE170M},
216 };
217 
218 /* Write VIP register */
219 static inline void reg_write(struct sta2x11_vip *vip, unsigned int reg, u32 val)
220 {
221         iowrite32((val), (vip->iomem)+(reg));
222 }
223 /* Read VIP register */
224 static inline u32 reg_read(struct sta2x11_vip *vip, unsigned int reg)
225 {
226         return  ioread32((vip->iomem)+(reg));
227 }
228 /* Start DMA acquisition */
229 static void start_dma(struct sta2x11_vip *vip, struct vip_buffer *vip_buf)
230 {
231         unsigned long offset = 0;
232 
233         if (vip->format.field == V4L2_FIELD_INTERLACED)
234                 offset = vip->format.width * 2;
235 
236         spin_lock_irq(&vip->slock);
237         /* Enable acquisition */
238         reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) | DVP_CTL_ENA);
239         /* Set Top and Bottom Field memory address */
240         reg_write(vip, DVP_VTP, (u32)vip_buf->dma);
241         reg_write(vip, DVP_VBP, (u32)vip_buf->dma + offset);
242         spin_unlock_irq(&vip->slock);
243 }
244 
245 /* Fetch the next buffer to activate */
246 static void vip_active_buf_next(struct sta2x11_vip *vip)
247 {
248         /* Get the next buffer */
249         spin_lock(&vip->lock);
250         if (list_empty(&vip->buffer_list)) {/* No available buffer */
251                 spin_unlock(&vip->lock);
252                 return;
253         }
254         vip->active = list_first_entry(&vip->buffer_list,
255                                        struct vip_buffer,
256                                        list);
257         /* Reset Top and Bottom counter */
258         vip->tcount = 0;
259         vip->bcount = 0;
260         spin_unlock(&vip->lock);
261         if (vb2_is_streaming(&vip->vb_vidq)) {  /* streaming is on */
262                 start_dma(vip, vip->active);    /* start dma capture */
263         }
264 }
265 
266 
267 /* Videobuf2 Operations */
268 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
269                        unsigned int *nbuffers, unsigned int *nplanes,
270                        unsigned int sizes[], void *alloc_ctxs[])
271 {
272         struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
273 
274         if (!(*nbuffers) || *nbuffers < MAX_FRAMES)
275                 *nbuffers = MAX_FRAMES;
276 
277         *nplanes = 1;
278         sizes[0] = vip->format.sizeimage;
279         alloc_ctxs[0] = vip->alloc_ctx;
280 
281         vip->sequence = 0;
282         vip->active = NULL;
283         vip->tcount = 0;
284         vip->bcount = 0;
285 
286         return 0;
287 };
288 static int buffer_init(struct vb2_buffer *vb)
289 {
290         struct vip_buffer *vip_buf = to_vip_buffer(vb);
291 
292         vip_buf->dma = vb2_dma_contig_plane_dma_addr(vb, 0);
293         INIT_LIST_HEAD(&vip_buf->list);
294         return 0;
295 }
296 
297 static int buffer_prepare(struct vb2_buffer *vb)
298 {
299         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
300         struct vip_buffer *vip_buf = to_vip_buffer(vb);
301         unsigned long size;
302 
303         size = vip->format.sizeimage;
304         if (vb2_plane_size(vb, 0) < size) {
305                 v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n",
306                          vb2_plane_size(vb, 0), size);
307                 return -EINVAL;
308         }
309 
310         vb2_set_plane_payload(&vip_buf->vb, 0, size);
311 
312         return 0;
313 }
314 static void buffer_queue(struct vb2_buffer *vb)
315 {
316         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
317         struct vip_buffer *vip_buf = to_vip_buffer(vb);
318 
319         spin_lock(&vip->lock);
320         list_add_tail(&vip_buf->list, &vip->buffer_list);
321         if (!vip->active) {     /* No active buffer, active the first one */
322                 vip->active = list_first_entry(&vip->buffer_list,
323                                                struct vip_buffer,
324                                                list);
325                 if (vb2_is_streaming(&vip->vb_vidq))    /* streaming is on */
326                         start_dma(vip, vip_buf);        /* start dma capture */
327         }
328         spin_unlock(&vip->lock);
329 }
330 static void buffer_finish(struct vb2_buffer *vb)
331 {
332         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
333         struct vip_buffer *vip_buf = to_vip_buffer(vb);
334 
335         /* Buffer handled, remove it from the list */
336         spin_lock(&vip->lock);
337         list_del_init(&vip_buf->list);
338         spin_unlock(&vip->lock);
339 
340         if (vb2_is_streaming(vb->vb2_queue))
341                 vip_active_buf_next(vip);
342 }
343 
344 static int start_streaming(struct vb2_queue *vq, unsigned int count)
345 {
346         struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
347 
348         spin_lock_irq(&vip->slock);
349         /* Enable interrupt VSYNC Top and Bottom*/
350         reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
351         spin_unlock_irq(&vip->slock);
352 
353         if (count)
354                 start_dma(vip, vip->active);
355 
356         return 0;
357 }
358 
359 /* abort streaming and wait for last buffer */
360 static int stop_streaming(struct vb2_queue *vq)
361 {
362         struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
363         struct vip_buffer *vip_buf, *node;
364 
365         /* Disable acquisition */
366         reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
367         /* Disable all interrupts */
368         reg_write(vip, DVP_ITM, 0);
369 
370         /* Release all active buffers */
371         spin_lock(&vip->lock);
372         list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) {
373                 vb2_buffer_done(&vip_buf->vb, VB2_BUF_STATE_ERROR);
374                 list_del(&vip_buf->list);
375         }
376         spin_unlock(&vip->lock);
377         return 0;
378 }
379 
380 static struct vb2_ops vip_video_qops = {
381         .queue_setup            = queue_setup,
382         .buf_init               = buffer_init,
383         .buf_prepare            = buffer_prepare,
384         .buf_finish             = buffer_finish,
385         .buf_queue              = buffer_queue,
386         .start_streaming        = start_streaming,
387         .stop_streaming         = stop_streaming,
388 };
389 
390 
391 /* File Operations */
392 static const struct v4l2_file_operations vip_fops = {
393         .owner = THIS_MODULE,
394         .open = v4l2_fh_open,
395         .release = vb2_fop_release,
396         .unlocked_ioctl = video_ioctl2,
397         .read = vb2_fop_read,
398         .mmap = vb2_fop_mmap,
399         .poll = vb2_fop_poll
400 };
401 
402 
403 /**
404  * vidioc_querycap - return capabilities of device
405  * @file: descriptor of device
406  * @cap: contains return values
407  *
408  * the capabilities of the device are returned
409  *
410  * return value: 0, no error.
411  */
412 static int vidioc_querycap(struct file *file, void *priv,
413                            struct v4l2_capability *cap)
414 {
415         struct sta2x11_vip *vip = video_drvdata(file);
416 
417         strcpy(cap->driver, KBUILD_MODNAME);
418         strcpy(cap->card, KBUILD_MODNAME);
419         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
420                  pci_name(vip->pdev));
421         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
422                            V4L2_CAP_STREAMING;
423         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
424 
425         return 0;
426 }
427 
428 /**
429  * vidioc_s_std - set video standard
430  * @file: descriptor of device
431  * @std: contains standard to be set
432  *
433  * the video standard is set
434  *
435  * return value: 0, no error.
436  *
437  * -EIO, no input signal detected
438  *
439  * other, returned from video DAC.
440  */
441 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id std)
442 {
443         struct sta2x11_vip *vip = video_drvdata(file);
444         v4l2_std_id oldstd = vip->std, newstd;
445         int status;
446 
447         if (V4L2_STD_ALL == std) {
448                 v4l2_subdev_call(vip->decoder, core, s_std, std);
449                 ssleep(2);
450                 v4l2_subdev_call(vip->decoder, video, querystd, &newstd);
451                 v4l2_subdev_call(vip->decoder, video, g_input_status, &status);
452                 if (status & V4L2_IN_ST_NO_SIGNAL)
453                         return -EIO;
454                 std = vip->std = newstd;
455                 if (oldstd != std) {
456                         if (V4L2_STD_525_60 & std)
457                                 vip->format = formats_60[0];
458                         else
459                                 vip->format = formats_50[0];
460                 }
461                 return 0;
462         }
463 
464         if (oldstd != std) {
465                 if (V4L2_STD_525_60 & std)
466                         vip->format = formats_60[0];
467                 else
468                         vip->format = formats_50[0];
469         }
470 
471         return v4l2_subdev_call(vip->decoder, core, s_std, std);
472 }
473 
474 /**
475  * vidioc_g_std - get video standard
476  * @file: descriptor of device
477  * @std: contains return values
478  *
479  * the current video standard is returned
480  *
481  * return value: 0, no error.
482  */
483 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std)
484 {
485         struct sta2x11_vip *vip = video_drvdata(file);
486 
487         *std = vip->std;
488         return 0;
489 }
490 
491 /**
492  * vidioc_querystd - get possible video standards
493  * @file: descriptor of device
494  * @std: contains return values
495  *
496  * all possible video standards are returned
497  *
498  * return value: delivered by video DAC routine.
499  */
500 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std)
501 {
502         struct sta2x11_vip *vip = video_drvdata(file);
503 
504         return v4l2_subdev_call(vip->decoder, video, querystd, std);
505 }
506 
507 static int vidioc_enum_input(struct file *file, void *priv,
508                              struct v4l2_input *inp)
509 {
510         if (inp->index > 1)
511                 return -EINVAL;
512 
513         inp->type = V4L2_INPUT_TYPE_CAMERA;
514         inp->std = V4L2_STD_ALL;
515         sprintf(inp->name, "Camera %u", inp->index);
516 
517         return 0;
518 }
519 
520 /**
521  * vidioc_s_input - set input line
522  * @file: descriptor of device
523  * @i: new input line number
524  *
525  * the current active input line is set
526  *
527  * return value: 0, no error.
528  *
529  * -EINVAL, line number out of range
530  */
531 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
532 {
533         struct sta2x11_vip *vip = video_drvdata(file);
534         int ret;
535 
536         if (i > 1)
537                 return -EINVAL;
538         ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0);
539 
540         if (!ret)
541                 vip->input = i;
542 
543         return 0;
544 }
545 
546 /**
547  * vidioc_g_input - return input line
548  * @file: descriptor of device
549  * @i: returned input line number
550  *
551  * the current active input line is returned
552  *
553  * return value: always 0.
554  */
555 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
556 {
557         struct sta2x11_vip *vip = video_drvdata(file);
558 
559         *i = vip->input;
560         return 0;
561 }
562 
563 /**
564  * vidioc_enum_fmt_vid_cap - return video capture format
565  * @f: returned format information
566  *
567  * returns name and format of video capture
568  * Only UYVY is supported by hardware.
569  *
570  * return value: always 0.
571  */
572 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
573                                    struct v4l2_fmtdesc *f)
574 {
575 
576         if (f->index != 0)
577                 return -EINVAL;
578 
579         strcpy(f->description, "4:2:2, packed, UYVY");
580         f->pixelformat = V4L2_PIX_FMT_UYVY;
581         f->flags = 0;
582         return 0;
583 }
584 
585 /**
586  * vidioc_try_fmt_vid_cap - set video capture format
587  * @file: descriptor of device
588  * @f: new format
589  *
590  * new video format is set which includes width and
591  * field type. width is fixed to 720, no scaling.
592  * Only UYVY is supported by this hardware.
593  * the minimum height is 200, the maximum is 576 (PAL)
594  *
595  * return value: 0, no error
596  *
597  * -EINVAL, pixel or field format not supported
598  *
599  */
600 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
601                                   struct v4l2_format *f)
602 {
603         struct sta2x11_vip *vip = video_drvdata(file);
604         int interlace_lim;
605 
606         if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) {
607                 v4l2_warn(&vip->v4l2_dev, "Invalid format, only UYVY supported\n");
608                 return -EINVAL;
609         }
610 
611         if (V4L2_STD_525_60 & vip->std)
612                 interlace_lim = 240;
613         else
614                 interlace_lim = 288;
615 
616         switch (f->fmt.pix.field) {
617         default:
618         case V4L2_FIELD_ANY:
619                 if (interlace_lim < f->fmt.pix.height)
620                         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
621                 else
622                         f->fmt.pix.field = V4L2_FIELD_BOTTOM;
623                 break;
624         case V4L2_FIELD_TOP:
625         case V4L2_FIELD_BOTTOM:
626                 if (interlace_lim < f->fmt.pix.height)
627                         f->fmt.pix.height = interlace_lim;
628                 break;
629         case V4L2_FIELD_INTERLACED:
630                 break;
631         }
632 
633         /* It is the only supported format */
634         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
635         f->fmt.pix.height &= ~1;
636         if (2 * interlace_lim < f->fmt.pix.height)
637                 f->fmt.pix.height = 2 * interlace_lim;
638         if (200 > f->fmt.pix.height)
639                 f->fmt.pix.height = 200;
640         f->fmt.pix.width = 720;
641         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
642         f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height;
643         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
644         f->fmt.pix.priv = 0;
645         return 0;
646 }
647 
648 /**
649  * vidioc_s_fmt_vid_cap - set current video format parameters
650  * @file: descriptor of device
651  * @f: returned format information
652  *
653  * set new capture format
654  * return value: 0, no error
655  *
656  * other, delivered by video DAC routine.
657  */
658 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
659                                 struct v4l2_format *f)
660 {
661         struct sta2x11_vip *vip = video_drvdata(file);
662         unsigned int t_stop, b_stop, pitch;
663         int ret;
664 
665         ret = vidioc_try_fmt_vid_cap(file, priv, f);
666         if (ret)
667                 return ret;
668 
669         if (vb2_is_busy(&vip->vb_vidq)) {
670                 /* Can't change format during acquisition */
671                 v4l2_err(&vip->v4l2_dev, "device busy\n");
672                 return -EBUSY;
673         }
674         vip->format = f->fmt.pix;
675         switch (vip->format.field) {
676         case V4L2_FIELD_INTERLACED:
677                 t_stop = ((vip->format.height / 2 - 1) << 16) |
678                          (2 * vip->format.width - 1);
679                 b_stop = t_stop;
680                 pitch = 4 * vip->format.width;
681                 break;
682         case V4L2_FIELD_TOP:
683                 t_stop = ((vip->format.height - 1) << 16) |
684                          (2 * vip->format.width - 1);
685                 b_stop = (0 << 16) | (2 * vip->format.width - 1);
686                 pitch = 2 * vip->format.width;
687                 break;
688         case V4L2_FIELD_BOTTOM:
689                 t_stop = (0 << 16) | (2 * vip->format.width - 1);
690                 b_stop = (vip->format.height << 16) |
691                          (2 * vip->format.width - 1);
692                 pitch = 2 * vip->format.width;
693                 break;
694         default:
695                 v4l2_err(&vip->v4l2_dev, "unknown field format\n");
696                 return -EINVAL;
697         }
698 
699         spin_lock_irq(&vip->slock);
700         /* Y-X Top Field Offset */
701         reg_write(vip, DVP_TFO, 0);
702         /* Y-X Bottom Field Offset */
703         reg_write(vip, DVP_BFO, 0);
704         /* Y-X Top Field Stop*/
705         reg_write(vip, DVP_TFS, t_stop);
706         /* Y-X Bottom Field Stop */
707         reg_write(vip, DVP_BFS, b_stop);
708         /* Video Memory Pitch */
709         reg_write(vip, DVP_VMP, pitch);
710         spin_unlock_irq(&vip->slock);
711 
712         return 0;
713 }
714 
715 /**
716  * vidioc_g_fmt_vid_cap - get current video format parameters
717  * @file: descriptor of device
718  * @f: contains format information
719  *
720  * returns current video format parameters
721  *
722  * return value: 0, always successful
723  */
724 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
725                                 struct v4l2_format *f)
726 {
727         struct sta2x11_vip *vip = video_drvdata(file);
728 
729         f->fmt.pix = vip->format;
730 
731         return 0;
732 }
733 
734 static const struct v4l2_ioctl_ops vip_ioctl_ops = {
735         .vidioc_querycap = vidioc_querycap,
736         /* FMT handling */
737         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
738         .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
739         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
740         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
741         /* Buffer handlers */
742         .vidioc_create_bufs = vb2_ioctl_create_bufs,
743         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
744         .vidioc_reqbufs = vb2_ioctl_reqbufs,
745         .vidioc_querybuf = vb2_ioctl_querybuf,
746         .vidioc_qbuf = vb2_ioctl_qbuf,
747         .vidioc_dqbuf = vb2_ioctl_dqbuf,
748         /* Stream on/off */
749         .vidioc_streamon = vb2_ioctl_streamon,
750         .vidioc_streamoff = vb2_ioctl_streamoff,
751         /* Standard handling */
752         .vidioc_g_std = vidioc_g_std,
753         .vidioc_s_std = vidioc_s_std,
754         .vidioc_querystd = vidioc_querystd,
755         /* Input handling */
756         .vidioc_enum_input = vidioc_enum_input,
757         .vidioc_g_input = vidioc_g_input,
758         .vidioc_s_input = vidioc_s_input,
759         /* Log status ioctl */
760         .vidioc_log_status = v4l2_ctrl_log_status,
761         /* Event handling */
762         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
763         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
764 };
765 
766 static struct video_device video_dev_template = {
767         .name = KBUILD_MODNAME,
768         .release = video_device_release,
769         .fops = &vip_fops,
770         .ioctl_ops = &vip_ioctl_ops,
771         .tvnorms = V4L2_STD_ALL,
772 };
773 
774 /**
775  * vip_irq - interrupt routine
776  * @irq: Number of interrupt ( not used, correct number is assumed )
777  * @vip: local data structure containing all information
778  *
779  * check for both frame interrupts set ( top and bottom ).
780  * check FIFO overflow, but limit number of log messages after open.
781  * signal a complete buffer if done
782  *
783  * return value: IRQ_NONE, interrupt was not generated by VIP
784  *
785  * IRQ_HANDLED, interrupt done.
786  */
787 static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip)
788 {
789         unsigned int status;
790 
791         status = reg_read(vip, DVP_ITS);
792 
793         if (!status)            /* No interrupt to handle */
794                 return IRQ_NONE;
795 
796         if (status & DVP_IT_FIFO)
797                 if (vip->overflow++ > 5)
798                         pr_info("VIP: fifo overflow\n");
799 
800         if ((status & DVP_IT_VST) && (status & DVP_IT_VSB)) {
801                 /* this is bad, we are too slow, hope the condition is gone
802                  * on the next frame */
803                 return IRQ_HANDLED;
804         }
805 
806         if (status & DVP_IT_VST)
807                 if ((++vip->tcount) < 2)
808                         return IRQ_HANDLED;
809         if (status & DVP_IT_VSB) {
810                 vip->bcount++;
811                 return IRQ_HANDLED;
812         }
813 
814         if (vip->active) { /* Acquisition is over on this buffer */
815                 /* Disable acquisition */
816                 reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
817                 /* Remove the active buffer from the list */
818                 do_gettimeofday(&vip->active->vb.v4l2_buf.timestamp);
819                 vip->active->vb.v4l2_buf.sequence = vip->sequence++;
820                 vb2_buffer_done(&vip->active->vb, VB2_BUF_STATE_DONE);
821         }
822 
823         return IRQ_HANDLED;
824 }
825 
826 static void sta2x11_vip_init_register(struct sta2x11_vip *vip)
827 {
828         /* Register initialization */
829         spin_lock_irq(&vip->slock);
830         /* Clean interrupt */
831         reg_read(vip, DVP_ITS);
832         /* Enable Half Line per vertical */
833         reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD);
834         /* Reset VIP control */
835         reg_write(vip, DVP_CTL, DVP_CTL_RST);
836         /* Clear VIP control */
837         reg_write(vip, DVP_CTL, 0);
838         spin_unlock_irq(&vip->slock);
839 }
840 static void sta2x11_vip_clear_register(struct sta2x11_vip *vip)
841 {
842         spin_lock_irq(&vip->slock);
843         /* Disable interrupt */
844         reg_write(vip, DVP_ITM, 0);
845         /* Reset VIP Control */
846         reg_write(vip, DVP_CTL, DVP_CTL_RST);
847         /* Clear VIP Control */
848         reg_write(vip, DVP_CTL, 0);
849         /* Clean VIP Interrupt */
850         reg_read(vip, DVP_ITS);
851         spin_unlock_irq(&vip->slock);
852 }
853 static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip)
854 {
855         int err;
856 
857         err = dma_set_coherent_mask(&vip->pdev->dev, DMA_BIT_MASK(29));
858         if (err) {
859                 v4l2_err(&vip->v4l2_dev, "Cannot configure coherent mask");
860                 return err;
861         }
862         memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue));
863         vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
864         vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ;
865         vip->vb_vidq.drv_priv = vip;
866         vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer);
867         vip->vb_vidq.ops = &vip_video_qops;
868         vip->vb_vidq.mem_ops = &vb2_dma_contig_memops;
869         err = vb2_queue_init(&vip->vb_vidq);
870         if (err)
871                 return err;
872         INIT_LIST_HEAD(&vip->buffer_list);
873         spin_lock_init(&vip->lock);
874 
875 
876         vip->alloc_ctx = vb2_dma_contig_init_ctx(&vip->pdev->dev);
877         if (IS_ERR(vip->alloc_ctx)) {
878                 v4l2_err(&vip->v4l2_dev, "Can't allocate buffer context");
879                 return PTR_ERR(vip->alloc_ctx);
880         }
881 
882         return 0;
883 }
884 static void sta2x11_vip_release_buffer(struct sta2x11_vip *vip)
885 {
886         vb2_dma_contig_cleanup_ctx(vip->alloc_ctx);
887 }
888 static int sta2x11_vip_init_controls(struct sta2x11_vip *vip)
889 {
890         /*
891          * Inititialize an empty control so VIP can inerithing controls
892          * from ADV7180
893          */
894         v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0);
895 
896         vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl;
897         if (vip->ctrl_hdl.error) {
898                 int err = vip->ctrl_hdl.error;
899 
900                 v4l2_ctrl_handler_free(&vip->ctrl_hdl);
901                 return err;
902         }
903 
904         return 0;
905 }
906 
907 /**
908  * vip_gpio_reserve - reserve gpio pin
909  * @dev: device
910  * @pin: GPIO pin number
911  * @dir: direction, input or output
912  * @name: GPIO pin name
913  *
914  */
915 static int vip_gpio_reserve(struct device *dev, int pin, int dir,
916                             const char *name)
917 {
918         int ret;
919 
920         if (pin == -1)
921                 return 0;
922 
923         ret = gpio_request(pin, name);
924         if (ret) {
925                 dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name);
926                 return ret;
927         }
928 
929         ret = gpio_direction_output(pin, dir);
930         if (ret) {
931                 dev_err(dev, "Failed to set direction for pin %d (%s)\n",
932                         pin, name);
933                 gpio_free(pin);
934                 return ret;
935         }
936 
937         ret = gpio_export(pin, false);
938         if (ret) {
939                 dev_err(dev, "Failed to export pin %d (%s)\n", pin, name);
940                 gpio_free(pin);
941                 return ret;
942         }
943 
944         return 0;
945 }
946 
947 /**
948  * vip_gpio_release - release gpio pin
949  * @dev: device
950  * @pin: GPIO pin number
951  * @name: GPIO pin name
952  *
953  */
954 static void vip_gpio_release(struct device *dev, int pin, const char *name)
955 {
956         if (pin != -1) {
957                 dev_dbg(dev, "releasing pin %d (%s)\n", pin, name);
958                 gpio_unexport(pin);
959                 gpio_free(pin);
960         }
961 }
962 
963 /**
964  * sta2x11_vip_init_one - init one instance of video device
965  * @pdev: PCI device
966  * @ent: (not used)
967  *
968  * allocate reset pins for DAC.
969  * Reset video DAC, this is done via reset line.
970  * allocate memory for managing device
971  * request interrupt
972  * map IO region
973  * register device
974  * find and initialize video DAC
975  *
976  * return value: 0, no error
977  *
978  * -ENOMEM, no memory
979  *
980  * -ENODEV, device could not be detected or registered
981  */
982 static int sta2x11_vip_init_one(struct pci_dev *pdev,
983                                 const struct pci_device_id *ent)
984 {
985         int ret;
986         struct sta2x11_vip *vip;
987         struct vip_config *config;
988 
989         /* Check if hardware support 26-bit DMA */
990         if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) {
991                 dev_err(&pdev->dev, "26-bit DMA addressing not available\n");
992                 return -EINVAL;
993         }
994         /* Enable PCI */
995         ret = pci_enable_device(pdev);
996         if (ret)
997                 return ret;
998 
999         /* Get VIP platform data */
1000         config = dev_get_platdata(&pdev->dev);
1001         if (!config) {
1002                 dev_info(&pdev->dev, "VIP slot disabled\n");
1003                 ret = -EINVAL;
1004                 goto disable;
1005         }
1006 
1007         /* Power configuration */
1008         ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
1009                                config->pwr_name);
1010         if (ret)
1011                 goto disable;
1012 
1013         if (config->reset_pin >= 0) {
1014                 ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0,
1015                                        config->reset_name);
1016                 if (ret) {
1017                         vip_gpio_release(&pdev->dev, config->pwr_pin,
1018                                          config->pwr_name);
1019                         goto disable;
1020                 }
1021         }
1022         if (config->pwr_pin != -1) {
1023                 /* Datasheet says 5ms between PWR and RST */
1024                 usleep_range(5000, 25000);
1025                 ret = gpio_direction_output(config->pwr_pin, 1);
1026         }
1027 
1028         if (config->reset_pin != -1) {
1029                 /* Datasheet says 5ms between PWR and RST */
1030                 usleep_range(5000, 25000);
1031                 ret = gpio_direction_output(config->reset_pin, 1);
1032         }
1033         usleep_range(5000, 25000);
1034 
1035         /* Allocate a new VIP instance */
1036         vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL);
1037         if (!vip) {
1038                 ret = -ENOMEM;
1039                 goto release_gpios;
1040         }
1041         vip->pdev = pdev;
1042         vip->std = V4L2_STD_PAL;
1043         vip->format = formats_50[0];
1044         vip->config = config;
1045 
1046         ret = sta2x11_vip_init_controls(vip);
1047         if (ret)
1048                 goto free_mem;
1049         ret = v4l2_device_register(&pdev->dev, &vip->v4l2_dev);
1050         if (ret)
1051                 goto free_mem;
1052 
1053         dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n",
1054                 (unsigned long)pci_resource_start(pdev, 0),
1055                 (unsigned long)pci_resource_len(pdev, 0), pdev->irq);
1056 
1057         pci_set_master(pdev);
1058 
1059         ret = pci_request_regions(pdev, KBUILD_MODNAME);
1060         if (ret)
1061                 goto unreg;
1062 
1063         vip->iomem = pci_iomap(pdev, 0, 0x100);
1064         if (!vip->iomem) {
1065                 ret = -ENOMEM;
1066                 goto release;
1067         }
1068 
1069         pci_enable_msi(pdev);
1070 
1071         /* Initialize buffer */
1072         ret = sta2x11_vip_init_buffer(vip);
1073         if (ret)
1074                 goto unmap;
1075 
1076         spin_lock_init(&vip->slock);
1077 
1078         ret = request_irq(pdev->irq,
1079                           (irq_handler_t) vip_irq,
1080                           IRQF_SHARED, KBUILD_MODNAME, vip);
1081         if (ret) {
1082                 dev_err(&pdev->dev, "request_irq failed\n");
1083                 ret = -ENODEV;
1084                 goto release_buf;
1085         }
1086 
1087         /* Alloc, initialize and register video device */
1088         vip->video_dev = video_device_alloc();
1089         if (!vip->video_dev) {
1090                 ret = -ENOMEM;
1091                 goto release_irq;
1092         }
1093 
1094         vip->video_dev = &video_dev_template;
1095         vip->video_dev->v4l2_dev = &vip->v4l2_dev;
1096         vip->video_dev->queue = &vip->vb_vidq;
1097         set_bit(V4L2_FL_USE_FH_PRIO, &vip->video_dev->flags);
1098         video_set_drvdata(vip->video_dev, vip);
1099 
1100         ret = video_register_device(vip->video_dev, VFL_TYPE_GRABBER, -1);
1101         if (ret)
1102                 goto vrelease;
1103 
1104         /* Get ADV7180 subdevice */
1105         vip->adapter = i2c_get_adapter(vip->config->i2c_id);
1106         if (!vip->adapter) {
1107                 ret = -ENODEV;
1108                 dev_err(&pdev->dev, "no I2C adapter found\n");
1109                 goto vunreg;
1110         }
1111 
1112         vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter,
1113                                            "adv7180", vip->config->i2c_addr,
1114                                            NULL);
1115         if (!vip->decoder) {
1116                 ret = -ENODEV;
1117                 dev_err(&pdev->dev, "no decoder found\n");
1118                 goto vunreg;
1119         }
1120 
1121         i2c_put_adapter(vip->adapter);
1122         v4l2_subdev_call(vip->decoder, core, init, 0);
1123 
1124         sta2x11_vip_init_register(vip);
1125 
1126         dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n");
1127         return 0;
1128 
1129 vunreg:
1130         video_set_drvdata(vip->video_dev, NULL);
1131 vrelease:
1132         if (video_is_registered(vip->video_dev))
1133                 video_unregister_device(vip->video_dev);
1134         else
1135                 video_device_release(vip->video_dev);
1136 release_irq:
1137         free_irq(pdev->irq, vip);
1138 release_buf:
1139         sta2x11_vip_release_buffer(vip);
1140         pci_disable_msi(pdev);
1141 unmap:
1142         vb2_queue_release(&vip->vb_vidq);
1143         pci_iounmap(pdev, vip->iomem);
1144 release:
1145         pci_release_regions(pdev);
1146 unreg:
1147         v4l2_device_unregister(&vip->v4l2_dev);
1148 free_mem:
1149         kfree(vip);
1150 release_gpios:
1151         vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name);
1152         vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name);
1153 disable:
1154         /*
1155          * do not call pci_disable_device on sta2x11 because it break all
1156          * other Bus masters on this EP
1157          */
1158         return ret;
1159 }
1160 
1161 /**
1162  * sta2x11_vip_remove_one - release device
1163  * @pdev: PCI device
1164  *
1165  * Undo everything done in .._init_one
1166  *
1167  * unregister video device
1168  * free interrupt
1169  * unmap ioadresses
1170  * free memory
1171  * free GPIO pins
1172  */
1173 static void sta2x11_vip_remove_one(struct pci_dev *pdev)
1174 {
1175         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1176         struct sta2x11_vip *vip =
1177             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1178 
1179         sta2x11_vip_clear_register(vip);
1180 
1181         video_set_drvdata(vip->video_dev, NULL);
1182         video_unregister_device(vip->video_dev);
1183         /*do not call video_device_release() here, is already done */
1184         free_irq(pdev->irq, vip);
1185         pci_disable_msi(pdev);
1186         vb2_queue_release(&vip->vb_vidq);
1187         pci_iounmap(pdev, vip->iomem);
1188         pci_release_regions(pdev);
1189 
1190         v4l2_device_unregister(&vip->v4l2_dev);
1191 
1192         vip_gpio_release(&pdev->dev, vip->config->pwr_pin,
1193                          vip->config->pwr_name);
1194         vip_gpio_release(&pdev->dev, vip->config->reset_pin,
1195                          vip->config->reset_name);
1196 
1197         kfree(vip);
1198         /*
1199          * do not call pci_disable_device on sta2x11 because it break all
1200          * other Bus masters on this EP
1201          */
1202 }
1203 
1204 #ifdef CONFIG_PM
1205 
1206 /**
1207  * sta2x11_vip_suspend - set device into power save mode
1208  * @pdev: PCI device
1209  * @state: new state of device
1210  *
1211  * all relevant registers are saved and an attempt to set a new state is made.
1212  *
1213  * return value: 0 always indicate success,
1214  * even if device could not be disabled. (workaround for hardware problem)
1215  */
1216 static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
1217 {
1218         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1219         struct sta2x11_vip *vip =
1220             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1221         unsigned long flags;
1222         int i;
1223 
1224         spin_lock_irqsave(&vip->slock, flags);
1225         vip->register_save_area[0] = reg_read(vip, DVP_CTL);
1226         reg_write(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS);
1227         vip->register_save_area[SAVE_COUNT] = reg_read(vip, DVP_ITM);
1228         reg_write(vip, DVP_ITM, 0);
1229         for (i = 1; i < SAVE_COUNT; i++)
1230                 vip->register_save_area[i] = reg_read(vip, 4 * i);
1231         for (i = 0; i < AUX_COUNT; i++)
1232                 vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] =
1233                     reg_read(vip, registers_to_save[i]);
1234         spin_unlock_irqrestore(&vip->slock, flags);
1235         /* save pci state */
1236         pci_save_state(pdev);
1237         if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) {
1238                 /*
1239                  * do not call pci_disable_device on sta2x11 because it
1240                  * break all other Bus masters on this EP
1241                  */
1242                 vip->disabled = 1;
1243         }
1244 
1245         pr_info("VIP: suspend\n");
1246         return 0;
1247 }
1248 
1249 /**
1250  * sta2x11_vip_resume - resume device operation
1251  * @pdev : PCI device
1252  *
1253  * re-enable device, set PCI state to powered and restore registers.
1254  * resume normal device operation afterwards.
1255  *
1256  * return value: 0, no error.
1257  *
1258  * other, could not set device to power on state.
1259  */
1260 static int sta2x11_vip_resume(struct pci_dev *pdev)
1261 {
1262         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1263         struct sta2x11_vip *vip =
1264             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1265         unsigned long flags;
1266         int ret, i;
1267 
1268         pr_info("VIP: resume\n");
1269         /* restore pci state */
1270         if (vip->disabled) {
1271                 ret = pci_enable_device(pdev);
1272                 if (ret) {
1273                         pr_warn("VIP: Can't enable device.\n");
1274                         return ret;
1275                 }
1276                 vip->disabled = 0;
1277         }
1278         ret = pci_set_power_state(pdev, PCI_D0);
1279         if (ret) {
1280                 /*
1281                  * do not call pci_disable_device on sta2x11 because it
1282                  * break all other Bus masters on this EP
1283                  */
1284                 pr_warn("VIP: Can't enable device.\n");
1285                 vip->disabled = 1;
1286                 return ret;
1287         }
1288 
1289         pci_restore_state(pdev);
1290 
1291         spin_lock_irqsave(&vip->slock, flags);
1292         for (i = 1; i < SAVE_COUNT; i++)
1293                 reg_write(vip, 4 * i, vip->register_save_area[i]);
1294         for (i = 0; i < AUX_COUNT; i++)
1295                 reg_write(vip, registers_to_save[i],
1296                           vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]);
1297         reg_write(vip, DVP_CTL, vip->register_save_area[0]);
1298         reg_write(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]);
1299         spin_unlock_irqrestore(&vip->slock, flags);
1300         return 0;
1301 }
1302 
1303 #endif
1304 
1305 static const struct pci_device_id sta2x11_vip_pci_tbl[] = {
1306         {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)},
1307         {0,}
1308 };
1309 
1310 static struct pci_driver sta2x11_vip_driver = {
1311         .name = KBUILD_MODNAME,
1312         .probe = sta2x11_vip_init_one,
1313         .remove = sta2x11_vip_remove_one,
1314         .id_table = sta2x11_vip_pci_tbl,
1315 #ifdef CONFIG_PM
1316         .suspend = sta2x11_vip_suspend,
1317         .resume = sta2x11_vip_resume,
1318 #endif
1319 };
1320 
1321 static int __init sta2x11_vip_init_module(void)
1322 {
1323         return pci_register_driver(&sta2x11_vip_driver);
1324 }
1325 
1326 static void __exit sta2x11_vip_exit_module(void)
1327 {
1328         pci_unregister_driver(&sta2x11_vip_driver);
1329 }
1330 
1331 #ifdef MODULE
1332 module_init(sta2x11_vip_init_module);
1333 module_exit(sta2x11_vip_exit_module);
1334 #else
1335 late_initcall_sync(sta2x11_vip_init_module);
1336 #endif
1337 
1338 MODULE_DESCRIPTION("STA2X11 Video Input Port driver");
1339 MODULE_AUTHOR("Wind River");
1340 MODULE_LICENSE("GPL v2");
1341 MODULE_SUPPORTED_DEVICE("sta2x11 video input");
1342 MODULE_VERSION(DRV_VERSION);
1343 MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl);
1344 

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