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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_v4l2_buffer vb;
 92         struct list_head        list;
 93         dma_addr_t              dma;
 94 };
 95 static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_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 *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,
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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
291         struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
292 
293         vip_buf->dma = vb2_dma_contig_plane_dma_addr(vb, 0);
294         INIT_LIST_HEAD(&vip_buf->list);
295         return 0;
296 }
297 
298 static int buffer_prepare(struct vb2_buffer *vb)
299 {
300         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
301         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
302         struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
303         unsigned long size;
304 
305         size = vip->format.sizeimage;
306         if (vb2_plane_size(vb, 0) < size) {
307                 v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n",
308                          vb2_plane_size(vb, 0), size);
309                 return -EINVAL;
310         }
311 
312         vb2_set_plane_payload(&vip_buf->vb.vb2_buf, 0, size);
313 
314         return 0;
315 }
316 static void buffer_queue(struct vb2_buffer *vb)
317 {
318         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
319         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
320         struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
321 
322         spin_lock(&vip->lock);
323         list_add_tail(&vip_buf->list, &vip->buffer_list);
324         if (!vip->active) {     /* No active buffer, active the first one */
325                 vip->active = list_first_entry(&vip->buffer_list,
326                                                struct vip_buffer,
327                                                list);
328                 if (vb2_is_streaming(&vip->vb_vidq))    /* streaming is on */
329                         start_dma(vip, vip_buf);        /* start dma capture */
330         }
331         spin_unlock(&vip->lock);
332 }
333 static void buffer_finish(struct vb2_buffer *vb)
334 {
335         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
336         struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
337         struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
338 
339         /* Buffer handled, remove it from the list */
340         spin_lock(&vip->lock);
341         list_del_init(&vip_buf->list);
342         spin_unlock(&vip->lock);
343 
344         if (vb2_is_streaming(vb->vb2_queue))
345                 vip_active_buf_next(vip);
346 }
347 
348 static int start_streaming(struct vb2_queue *vq, unsigned int count)
349 {
350         struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
351 
352         spin_lock_irq(&vip->slock);
353         /* Enable interrupt VSYNC Top and Bottom*/
354         reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
355         spin_unlock_irq(&vip->slock);
356 
357         if (count)
358                 start_dma(vip, vip->active);
359 
360         return 0;
361 }
362 
363 /* abort streaming and wait for last buffer */
364 static void stop_streaming(struct vb2_queue *vq)
365 {
366         struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
367         struct vip_buffer *vip_buf, *node;
368 
369         /* Disable acquisition */
370         reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
371         /* Disable all interrupts */
372         reg_write(vip, DVP_ITM, 0);
373 
374         /* Release all active buffers */
375         spin_lock(&vip->lock);
376         list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) {
377                 vb2_buffer_done(&vip_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
378                 list_del(&vip_buf->list);
379         }
380         spin_unlock(&vip->lock);
381 }
382 
383 static struct vb2_ops vip_video_qops = {
384         .queue_setup            = queue_setup,
385         .buf_init               = buffer_init,
386         .buf_prepare            = buffer_prepare,
387         .buf_finish             = buffer_finish,
388         .buf_queue              = buffer_queue,
389         .start_streaming        = start_streaming,
390         .stop_streaming         = stop_streaming,
391 };
392 
393 
394 /* File Operations */
395 static const struct v4l2_file_operations vip_fops = {
396         .owner = THIS_MODULE,
397         .open = v4l2_fh_open,
398         .release = vb2_fop_release,
399         .unlocked_ioctl = video_ioctl2,
400         .read = vb2_fop_read,
401         .mmap = vb2_fop_mmap,
402         .poll = vb2_fop_poll
403 };
404 
405 
406 /**
407  * vidioc_querycap - return capabilities of device
408  * @file: descriptor of device
409  * @cap: contains return values
410  *
411  * the capabilities of the device are returned
412  *
413  * return value: 0, no error.
414  */
415 static int vidioc_querycap(struct file *file, void *priv,
416                            struct v4l2_capability *cap)
417 {
418         struct sta2x11_vip *vip = video_drvdata(file);
419 
420         strcpy(cap->driver, KBUILD_MODNAME);
421         strcpy(cap->card, KBUILD_MODNAME);
422         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
423                  pci_name(vip->pdev));
424         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
425                            V4L2_CAP_STREAMING;
426         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
427 
428         return 0;
429 }
430 
431 /**
432  * vidioc_s_std - set video standard
433  * @file: descriptor of device
434  * @std: contains standard to be set
435  *
436  * the video standard is set
437  *
438  * return value: 0, no error.
439  *
440  * -EIO, no input signal detected
441  *
442  * other, returned from video DAC.
443  */
444 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id std)
445 {
446         struct sta2x11_vip *vip = video_drvdata(file);
447         v4l2_std_id oldstd = vip->std, newstd;
448         int status;
449 
450         if (V4L2_STD_ALL == std) {
451                 v4l2_subdev_call(vip->decoder, video, s_std, std);
452                 ssleep(2);
453                 v4l2_subdev_call(vip->decoder, video, querystd, &newstd);
454                 v4l2_subdev_call(vip->decoder, video, g_input_status, &status);
455                 if (status & V4L2_IN_ST_NO_SIGNAL)
456                         return -EIO;
457                 std = vip->std = newstd;
458                 if (oldstd != std) {
459                         if (V4L2_STD_525_60 & std)
460                                 vip->format = formats_60[0];
461                         else
462                                 vip->format = formats_50[0];
463                 }
464                 return 0;
465         }
466 
467         if (oldstd != std) {
468                 if (V4L2_STD_525_60 & std)
469                         vip->format = formats_60[0];
470                 else
471                         vip->format = formats_50[0];
472         }
473 
474         return v4l2_subdev_call(vip->decoder, video, s_std, std);
475 }
476 
477 /**
478  * vidioc_g_std - get video standard
479  * @file: descriptor of device
480  * @std: contains return values
481  *
482  * the current video standard is returned
483  *
484  * return value: 0, no error.
485  */
486 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std)
487 {
488         struct sta2x11_vip *vip = video_drvdata(file);
489 
490         *std = vip->std;
491         return 0;
492 }
493 
494 /**
495  * vidioc_querystd - get possible video standards
496  * @file: descriptor of device
497  * @std: contains return values
498  *
499  * all possible video standards are returned
500  *
501  * return value: delivered by video DAC routine.
502  */
503 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std)
504 {
505         struct sta2x11_vip *vip = video_drvdata(file);
506 
507         return v4l2_subdev_call(vip->decoder, video, querystd, std);
508 }
509 
510 static int vidioc_enum_input(struct file *file, void *priv,
511                              struct v4l2_input *inp)
512 {
513         if (inp->index > 1)
514                 return -EINVAL;
515 
516         inp->type = V4L2_INPUT_TYPE_CAMERA;
517         inp->std = V4L2_STD_ALL;
518         sprintf(inp->name, "Camera %u", inp->index);
519 
520         return 0;
521 }
522 
523 /**
524  * vidioc_s_input - set input line
525  * @file: descriptor of device
526  * @i: new input line number
527  *
528  * the current active input line is set
529  *
530  * return value: 0, no error.
531  *
532  * -EINVAL, line number out of range
533  */
534 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
535 {
536         struct sta2x11_vip *vip = video_drvdata(file);
537         int ret;
538 
539         if (i > 1)
540                 return -EINVAL;
541         ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0);
542 
543         if (!ret)
544                 vip->input = i;
545 
546         return 0;
547 }
548 
549 /**
550  * vidioc_g_input - return input line
551  * @file: descriptor of device
552  * @i: returned input line number
553  *
554  * the current active input line is returned
555  *
556  * return value: always 0.
557  */
558 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
559 {
560         struct sta2x11_vip *vip = video_drvdata(file);
561 
562         *i = vip->input;
563         return 0;
564 }
565 
566 /**
567  * vidioc_enum_fmt_vid_cap - return video capture format
568  * @f: returned format information
569  *
570  * returns name and format of video capture
571  * Only UYVY is supported by hardware.
572  *
573  * return value: always 0.
574  */
575 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
576                                    struct v4l2_fmtdesc *f)
577 {
578 
579         if (f->index != 0)
580                 return -EINVAL;
581 
582         strcpy(f->description, "4:2:2, packed, UYVY");
583         f->pixelformat = V4L2_PIX_FMT_UYVY;
584         f->flags = 0;
585         return 0;
586 }
587 
588 /**
589  * vidioc_try_fmt_vid_cap - set video capture format
590  * @file: descriptor of device
591  * @f: new format
592  *
593  * new video format is set which includes width and
594  * field type. width is fixed to 720, no scaling.
595  * Only UYVY is supported by this hardware.
596  * the minimum height is 200, the maximum is 576 (PAL)
597  *
598  * return value: 0, no error
599  *
600  * -EINVAL, pixel or field format not supported
601  *
602  */
603 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
604                                   struct v4l2_format *f)
605 {
606         struct sta2x11_vip *vip = video_drvdata(file);
607         int interlace_lim;
608 
609         if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) {
610                 v4l2_warn(&vip->v4l2_dev, "Invalid format, only UYVY supported\n");
611                 return -EINVAL;
612         }
613 
614         if (V4L2_STD_525_60 & vip->std)
615                 interlace_lim = 240;
616         else
617                 interlace_lim = 288;
618 
619         switch (f->fmt.pix.field) {
620         default:
621         case V4L2_FIELD_ANY:
622                 if (interlace_lim < f->fmt.pix.height)
623                         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
624                 else
625                         f->fmt.pix.field = V4L2_FIELD_BOTTOM;
626                 break;
627         case V4L2_FIELD_TOP:
628         case V4L2_FIELD_BOTTOM:
629                 if (interlace_lim < f->fmt.pix.height)
630                         f->fmt.pix.height = interlace_lim;
631                 break;
632         case V4L2_FIELD_INTERLACED:
633                 break;
634         }
635 
636         /* It is the only supported format */
637         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
638         f->fmt.pix.height &= ~1;
639         if (2 * interlace_lim < f->fmt.pix.height)
640                 f->fmt.pix.height = 2 * interlace_lim;
641         if (200 > f->fmt.pix.height)
642                 f->fmt.pix.height = 200;
643         f->fmt.pix.width = 720;
644         f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
645         f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height;
646         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
647         return 0;
648 }
649 
650 /**
651  * vidioc_s_fmt_vid_cap - set current video format parameters
652  * @file: descriptor of device
653  * @f: returned format information
654  *
655  * set new capture format
656  * return value: 0, no error
657  *
658  * other, delivered by video DAC routine.
659  */
660 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
661                                 struct v4l2_format *f)
662 {
663         struct sta2x11_vip *vip = video_drvdata(file);
664         unsigned int t_stop, b_stop, pitch;
665         int ret;
666 
667         ret = vidioc_try_fmt_vid_cap(file, priv, f);
668         if (ret)
669                 return ret;
670 
671         if (vb2_is_busy(&vip->vb_vidq)) {
672                 /* Can't change format during acquisition */
673                 v4l2_err(&vip->v4l2_dev, "device busy\n");
674                 return -EBUSY;
675         }
676         vip->format = f->fmt.pix;
677         switch (vip->format.field) {
678         case V4L2_FIELD_INTERLACED:
679                 t_stop = ((vip->format.height / 2 - 1) << 16) |
680                          (2 * vip->format.width - 1);
681                 b_stop = t_stop;
682                 pitch = 4 * vip->format.width;
683                 break;
684         case V4L2_FIELD_TOP:
685                 t_stop = ((vip->format.height - 1) << 16) |
686                          (2 * vip->format.width - 1);
687                 b_stop = (0 << 16) | (2 * vip->format.width - 1);
688                 pitch = 2 * vip->format.width;
689                 break;
690         case V4L2_FIELD_BOTTOM:
691                 t_stop = (0 << 16) | (2 * vip->format.width - 1);
692                 b_stop = (vip->format.height << 16) |
693                          (2 * vip->format.width - 1);
694                 pitch = 2 * vip->format.width;
695                 break;
696         default:
697                 v4l2_err(&vip->v4l2_dev, "unknown field format\n");
698                 return -EINVAL;
699         }
700 
701         spin_lock_irq(&vip->slock);
702         /* Y-X Top Field Offset */
703         reg_write(vip, DVP_TFO, 0);
704         /* Y-X Bottom Field Offset */
705         reg_write(vip, DVP_BFO, 0);
706         /* Y-X Top Field Stop*/
707         reg_write(vip, DVP_TFS, t_stop);
708         /* Y-X Bottom Field Stop */
709         reg_write(vip, DVP_BFS, b_stop);
710         /* Video Memory Pitch */
711         reg_write(vip, DVP_VMP, pitch);
712         spin_unlock_irq(&vip->slock);
713 
714         return 0;
715 }
716 
717 /**
718  * vidioc_g_fmt_vid_cap - get current video format parameters
719  * @file: descriptor of device
720  * @f: contains format information
721  *
722  * returns current video format parameters
723  *
724  * return value: 0, always successful
725  */
726 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
727                                 struct v4l2_format *f)
728 {
729         struct sta2x11_vip *vip = video_drvdata(file);
730 
731         f->fmt.pix = vip->format;
732 
733         return 0;
734 }
735 
736 static const struct v4l2_ioctl_ops vip_ioctl_ops = {
737         .vidioc_querycap = vidioc_querycap,
738         /* FMT handling */
739         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
740         .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
741         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
742         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
743         /* Buffer handlers */
744         .vidioc_create_bufs = vb2_ioctl_create_bufs,
745         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
746         .vidioc_reqbufs = vb2_ioctl_reqbufs,
747         .vidioc_querybuf = vb2_ioctl_querybuf,
748         .vidioc_qbuf = vb2_ioctl_qbuf,
749         .vidioc_dqbuf = vb2_ioctl_dqbuf,
750         /* Stream on/off */
751         .vidioc_streamon = vb2_ioctl_streamon,
752         .vidioc_streamoff = vb2_ioctl_streamoff,
753         /* Standard handling */
754         .vidioc_g_std = vidioc_g_std,
755         .vidioc_s_std = vidioc_s_std,
756         .vidioc_querystd = vidioc_querystd,
757         /* Input handling */
758         .vidioc_enum_input = vidioc_enum_input,
759         .vidioc_g_input = vidioc_g_input,
760         .vidioc_s_input = vidioc_s_input,
761         /* Log status ioctl */
762         .vidioc_log_status = v4l2_ctrl_log_status,
763         /* Event handling */
764         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
765         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
766 };
767 
768 static struct video_device video_dev_template = {
769         .name = KBUILD_MODNAME,
770         .release = video_device_release_empty,
771         .fops = &vip_fops,
772         .ioctl_ops = &vip_ioctl_ops,
773         .tvnorms = V4L2_STD_ALL,
774 };
775 
776 /**
777  * vip_irq - interrupt routine
778  * @irq: Number of interrupt ( not used, correct number is assumed )
779  * @vip: local data structure containing all information
780  *
781  * check for both frame interrupts set ( top and bottom ).
782  * check FIFO overflow, but limit number of log messages after open.
783  * signal a complete buffer if done
784  *
785  * return value: IRQ_NONE, interrupt was not generated by VIP
786  *
787  * IRQ_HANDLED, interrupt done.
788  */
789 static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip)
790 {
791         unsigned int status;
792 
793         status = reg_read(vip, DVP_ITS);
794 
795         if (!status)            /* No interrupt to handle */
796                 return IRQ_NONE;
797 
798         if (status & DVP_IT_FIFO)
799                 if (vip->overflow++ > 5)
800                         pr_info("VIP: fifo overflow\n");
801 
802         if ((status & DVP_IT_VST) && (status & DVP_IT_VSB)) {
803                 /* this is bad, we are too slow, hope the condition is gone
804                  * on the next frame */
805                 return IRQ_HANDLED;
806         }
807 
808         if (status & DVP_IT_VST)
809                 if ((++vip->tcount) < 2)
810                         return IRQ_HANDLED;
811         if (status & DVP_IT_VSB) {
812                 vip->bcount++;
813                 return IRQ_HANDLED;
814         }
815 
816         if (vip->active) { /* Acquisition is over on this buffer */
817                 /* Disable acquisition */
818                 reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
819                 /* Remove the active buffer from the list */
820                 vip->active->vb.vb2_buf.timestamp = ktime_get_ns();
821                 vip->active->vb.sequence = vip->sequence++;
822                 vb2_buffer_done(&vip->active->vb.vb2_buf, VB2_BUF_STATE_DONE);
823         }
824 
825         return IRQ_HANDLED;
826 }
827 
828 static void sta2x11_vip_init_register(struct sta2x11_vip *vip)
829 {
830         /* Register initialization */
831         spin_lock_irq(&vip->slock);
832         /* Clean interrupt */
833         reg_read(vip, DVP_ITS);
834         /* Enable Half Line per vertical */
835         reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD);
836         /* Reset VIP control */
837         reg_write(vip, DVP_CTL, DVP_CTL_RST);
838         /* Clear VIP control */
839         reg_write(vip, DVP_CTL, 0);
840         spin_unlock_irq(&vip->slock);
841 }
842 static void sta2x11_vip_clear_register(struct sta2x11_vip *vip)
843 {
844         spin_lock_irq(&vip->slock);
845         /* Disable interrupt */
846         reg_write(vip, DVP_ITM, 0);
847         /* Reset VIP Control */
848         reg_write(vip, DVP_CTL, DVP_CTL_RST);
849         /* Clear VIP Control */
850         reg_write(vip, DVP_CTL, 0);
851         /* Clean VIP Interrupt */
852         reg_read(vip, DVP_ITS);
853         spin_unlock_irq(&vip->slock);
854 }
855 static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip)
856 {
857         int err;
858 
859         err = dma_set_coherent_mask(&vip->pdev->dev, DMA_BIT_MASK(29));
860         if (err) {
861                 v4l2_err(&vip->v4l2_dev, "Cannot configure coherent mask");
862                 return err;
863         }
864         memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue));
865         vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
866         vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ;
867         vip->vb_vidq.drv_priv = vip;
868         vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer);
869         vip->vb_vidq.ops = &vip_video_qops;
870         vip->vb_vidq.mem_ops = &vb2_dma_contig_memops;
871         vip->vb_vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
872         err = vb2_queue_init(&vip->vb_vidq);
873         if (err)
874                 return err;
875         INIT_LIST_HEAD(&vip->buffer_list);
876         spin_lock_init(&vip->lock);
877 
878 
879         vip->alloc_ctx = vb2_dma_contig_init_ctx(&vip->pdev->dev);
880         if (IS_ERR(vip->alloc_ctx)) {
881                 v4l2_err(&vip->v4l2_dev, "Can't allocate buffer context");
882                 return PTR_ERR(vip->alloc_ctx);
883         }
884 
885         return 0;
886 }
887 static void sta2x11_vip_release_buffer(struct sta2x11_vip *vip)
888 {
889         vb2_dma_contig_cleanup_ctx(vip->alloc_ctx);
890 }
891 static int sta2x11_vip_init_controls(struct sta2x11_vip *vip)
892 {
893         /*
894          * Inititialize an empty control so VIP can inerithing controls
895          * from ADV7180
896          */
897         v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0);
898 
899         vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl;
900         if (vip->ctrl_hdl.error) {
901                 int err = vip->ctrl_hdl.error;
902 
903                 v4l2_ctrl_handler_free(&vip->ctrl_hdl);
904                 return err;
905         }
906 
907         return 0;
908 }
909 
910 /**
911  * vip_gpio_reserve - reserve gpio pin
912  * @dev: device
913  * @pin: GPIO pin number
914  * @dir: direction, input or output
915  * @name: GPIO pin name
916  *
917  */
918 static int vip_gpio_reserve(struct device *dev, int pin, int dir,
919                             const char *name)
920 {
921         int ret;
922 
923         if (pin == -1)
924                 return 0;
925 
926         ret = gpio_request(pin, name);
927         if (ret) {
928                 dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name);
929                 return ret;
930         }
931 
932         ret = gpio_direction_output(pin, dir);
933         if (ret) {
934                 dev_err(dev, "Failed to set direction for pin %d (%s)\n",
935                         pin, name);
936                 gpio_free(pin);
937                 return ret;
938         }
939 
940         ret = gpio_export(pin, false);
941         if (ret) {
942                 dev_err(dev, "Failed to export pin %d (%s)\n", pin, name);
943                 gpio_free(pin);
944                 return ret;
945         }
946 
947         return 0;
948 }
949 
950 /**
951  * vip_gpio_release - release gpio pin
952  * @dev: device
953  * @pin: GPIO pin number
954  * @name: GPIO pin name
955  *
956  */
957 static void vip_gpio_release(struct device *dev, int pin, const char *name)
958 {
959         if (pin != -1) {
960                 dev_dbg(dev, "releasing pin %d (%s)\n", pin, name);
961                 gpio_unexport(pin);
962                 gpio_free(pin);
963         }
964 }
965 
966 /**
967  * sta2x11_vip_init_one - init one instance of video device
968  * @pdev: PCI device
969  * @ent: (not used)
970  *
971  * allocate reset pins for DAC.
972  * Reset video DAC, this is done via reset line.
973  * allocate memory for managing device
974  * request interrupt
975  * map IO region
976  * register device
977  * find and initialize video DAC
978  *
979  * return value: 0, no error
980  *
981  * -ENOMEM, no memory
982  *
983  * -ENODEV, device could not be detected or registered
984  */
985 static int sta2x11_vip_init_one(struct pci_dev *pdev,
986                                 const struct pci_device_id *ent)
987 {
988         int ret;
989         struct sta2x11_vip *vip;
990         struct vip_config *config;
991 
992         /* Check if hardware support 26-bit DMA */
993         if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) {
994                 dev_err(&pdev->dev, "26-bit DMA addressing not available\n");
995                 return -EINVAL;
996         }
997         /* Enable PCI */
998         ret = pci_enable_device(pdev);
999         if (ret)
1000                 return ret;
1001 
1002         /* Get VIP platform data */
1003         config = dev_get_platdata(&pdev->dev);
1004         if (!config) {
1005                 dev_info(&pdev->dev, "VIP slot disabled\n");
1006                 ret = -EINVAL;
1007                 goto disable;
1008         }
1009 
1010         /* Power configuration */
1011         ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
1012                                config->pwr_name);
1013         if (ret)
1014                 goto disable;
1015 
1016         if (config->reset_pin >= 0) {
1017                 ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0,
1018                                        config->reset_name);
1019                 if (ret) {
1020                         vip_gpio_release(&pdev->dev, config->pwr_pin,
1021                                          config->pwr_name);
1022                         goto disable;
1023                 }
1024         }
1025         if (config->pwr_pin != -1) {
1026                 /* Datasheet says 5ms between PWR and RST */
1027                 usleep_range(5000, 25000);
1028                 ret = gpio_direction_output(config->pwr_pin, 1);
1029         }
1030 
1031         if (config->reset_pin != -1) {
1032                 /* Datasheet says 5ms between PWR and RST */
1033                 usleep_range(5000, 25000);
1034                 ret = gpio_direction_output(config->reset_pin, 1);
1035         }
1036         usleep_range(5000, 25000);
1037 
1038         /* Allocate a new VIP instance */
1039         vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL);
1040         if (!vip) {
1041                 ret = -ENOMEM;
1042                 goto release_gpios;
1043         }
1044         vip->pdev = pdev;
1045         vip->std = V4L2_STD_PAL;
1046         vip->format = formats_50[0];
1047         vip->config = config;
1048 
1049         ret = sta2x11_vip_init_controls(vip);
1050         if (ret)
1051                 goto free_mem;
1052         ret = v4l2_device_register(&pdev->dev, &vip->v4l2_dev);
1053         if (ret)
1054                 goto free_mem;
1055 
1056         dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n",
1057                 (unsigned long)pci_resource_start(pdev, 0),
1058                 (unsigned long)pci_resource_len(pdev, 0), pdev->irq);
1059 
1060         pci_set_master(pdev);
1061 
1062         ret = pci_request_regions(pdev, KBUILD_MODNAME);
1063         if (ret)
1064                 goto unreg;
1065 
1066         vip->iomem = pci_iomap(pdev, 0, 0x100);
1067         if (!vip->iomem) {
1068                 ret = -ENOMEM;
1069                 goto release;
1070         }
1071 
1072         pci_enable_msi(pdev);
1073 
1074         /* Initialize buffer */
1075         ret = sta2x11_vip_init_buffer(vip);
1076         if (ret)
1077                 goto unmap;
1078 
1079         spin_lock_init(&vip->slock);
1080 
1081         ret = request_irq(pdev->irq,
1082                           (irq_handler_t) vip_irq,
1083                           IRQF_SHARED, KBUILD_MODNAME, vip);
1084         if (ret) {
1085                 dev_err(&pdev->dev, "request_irq failed\n");
1086                 ret = -ENODEV;
1087                 goto release_buf;
1088         }
1089 
1090         /* Initialize and register video device */
1091         vip->video_dev = video_dev_template;
1092         vip->video_dev.v4l2_dev = &vip->v4l2_dev;
1093         vip->video_dev.queue = &vip->vb_vidq;
1094         video_set_drvdata(&vip->video_dev, vip);
1095 
1096         ret = video_register_device(&vip->video_dev, VFL_TYPE_GRABBER, -1);
1097         if (ret)
1098                 goto vrelease;
1099 
1100         /* Get ADV7180 subdevice */
1101         vip->adapter = i2c_get_adapter(vip->config->i2c_id);
1102         if (!vip->adapter) {
1103                 ret = -ENODEV;
1104                 dev_err(&pdev->dev, "no I2C adapter found\n");
1105                 goto vunreg;
1106         }
1107 
1108         vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter,
1109                                            "adv7180", vip->config->i2c_addr,
1110                                            NULL);
1111         if (!vip->decoder) {
1112                 ret = -ENODEV;
1113                 dev_err(&pdev->dev, "no decoder found\n");
1114                 goto vunreg;
1115         }
1116 
1117         i2c_put_adapter(vip->adapter);
1118         v4l2_subdev_call(vip->decoder, core, init, 0);
1119 
1120         sta2x11_vip_init_register(vip);
1121 
1122         dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n");
1123         return 0;
1124 
1125 vunreg:
1126         video_set_drvdata(&vip->video_dev, NULL);
1127 vrelease:
1128         video_unregister_device(&vip->video_dev);
1129         free_irq(pdev->irq, vip);
1130 release_buf:
1131         sta2x11_vip_release_buffer(vip);
1132         pci_disable_msi(pdev);
1133 unmap:
1134         vb2_queue_release(&vip->vb_vidq);
1135         pci_iounmap(pdev, vip->iomem);
1136 release:
1137         pci_release_regions(pdev);
1138 unreg:
1139         v4l2_device_unregister(&vip->v4l2_dev);
1140 free_mem:
1141         kfree(vip);
1142 release_gpios:
1143         vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name);
1144         vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name);
1145 disable:
1146         /*
1147          * do not call pci_disable_device on sta2x11 because it break all
1148          * other Bus masters on this EP
1149          */
1150         return ret;
1151 }
1152 
1153 /**
1154  * sta2x11_vip_remove_one - release device
1155  * @pdev: PCI device
1156  *
1157  * Undo everything done in .._init_one
1158  *
1159  * unregister video device
1160  * free interrupt
1161  * unmap ioadresses
1162  * free memory
1163  * free GPIO pins
1164  */
1165 static void sta2x11_vip_remove_one(struct pci_dev *pdev)
1166 {
1167         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1168         struct sta2x11_vip *vip =
1169             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1170 
1171         sta2x11_vip_clear_register(vip);
1172 
1173         video_set_drvdata(&vip->video_dev, NULL);
1174         video_unregister_device(&vip->video_dev);
1175         free_irq(pdev->irq, vip);
1176         pci_disable_msi(pdev);
1177         vb2_queue_release(&vip->vb_vidq);
1178         pci_iounmap(pdev, vip->iomem);
1179         pci_release_regions(pdev);
1180 
1181         v4l2_device_unregister(&vip->v4l2_dev);
1182 
1183         vip_gpio_release(&pdev->dev, vip->config->pwr_pin,
1184                          vip->config->pwr_name);
1185         vip_gpio_release(&pdev->dev, vip->config->reset_pin,
1186                          vip->config->reset_name);
1187 
1188         kfree(vip);
1189         /*
1190          * do not call pci_disable_device on sta2x11 because it break all
1191          * other Bus masters on this EP
1192          */
1193 }
1194 
1195 #ifdef CONFIG_PM
1196 
1197 /**
1198  * sta2x11_vip_suspend - set device into power save mode
1199  * @pdev: PCI device
1200  * @state: new state of device
1201  *
1202  * all relevant registers are saved and an attempt to set a new state is made.
1203  *
1204  * return value: 0 always indicate success,
1205  * even if device could not be disabled. (workaround for hardware problem)
1206  */
1207 static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
1208 {
1209         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1210         struct sta2x11_vip *vip =
1211             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1212         unsigned long flags;
1213         int i;
1214 
1215         spin_lock_irqsave(&vip->slock, flags);
1216         vip->register_save_area[0] = reg_read(vip, DVP_CTL);
1217         reg_write(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS);
1218         vip->register_save_area[SAVE_COUNT] = reg_read(vip, DVP_ITM);
1219         reg_write(vip, DVP_ITM, 0);
1220         for (i = 1; i < SAVE_COUNT; i++)
1221                 vip->register_save_area[i] = reg_read(vip, 4 * i);
1222         for (i = 0; i < AUX_COUNT; i++)
1223                 vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] =
1224                     reg_read(vip, registers_to_save[i]);
1225         spin_unlock_irqrestore(&vip->slock, flags);
1226         /* save pci state */
1227         pci_save_state(pdev);
1228         if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) {
1229                 /*
1230                  * do not call pci_disable_device on sta2x11 because it
1231                  * break all other Bus masters on this EP
1232                  */
1233                 vip->disabled = 1;
1234         }
1235 
1236         pr_info("VIP: suspend\n");
1237         return 0;
1238 }
1239 
1240 /**
1241  * sta2x11_vip_resume - resume device operation
1242  * @pdev : PCI device
1243  *
1244  * re-enable device, set PCI state to powered and restore registers.
1245  * resume normal device operation afterwards.
1246  *
1247  * return value: 0, no error.
1248  *
1249  * other, could not set device to power on state.
1250  */
1251 static int sta2x11_vip_resume(struct pci_dev *pdev)
1252 {
1253         struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1254         struct sta2x11_vip *vip =
1255             container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
1256         unsigned long flags;
1257         int ret, i;
1258 
1259         pr_info("VIP: resume\n");
1260         /* restore pci state */
1261         if (vip->disabled) {
1262                 ret = pci_enable_device(pdev);
1263                 if (ret) {
1264                         pr_warn("VIP: Can't enable device.\n");
1265                         return ret;
1266                 }
1267                 vip->disabled = 0;
1268         }
1269         ret = pci_set_power_state(pdev, PCI_D0);
1270         if (ret) {
1271                 /*
1272                  * do not call pci_disable_device on sta2x11 because it
1273                  * break all other Bus masters on this EP
1274                  */
1275                 pr_warn("VIP: Can't enable device.\n");
1276                 vip->disabled = 1;
1277                 return ret;
1278         }
1279 
1280         pci_restore_state(pdev);
1281 
1282         spin_lock_irqsave(&vip->slock, flags);
1283         for (i = 1; i < SAVE_COUNT; i++)
1284                 reg_write(vip, 4 * i, vip->register_save_area[i]);
1285         for (i = 0; i < AUX_COUNT; i++)
1286                 reg_write(vip, registers_to_save[i],
1287                           vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]);
1288         reg_write(vip, DVP_CTL, vip->register_save_area[0]);
1289         reg_write(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]);
1290         spin_unlock_irqrestore(&vip->slock, flags);
1291         return 0;
1292 }
1293 
1294 #endif
1295 
1296 static const struct pci_device_id sta2x11_vip_pci_tbl[] = {
1297         {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)},
1298         {0,}
1299 };
1300 
1301 static struct pci_driver sta2x11_vip_driver = {
1302         .name = KBUILD_MODNAME,
1303         .probe = sta2x11_vip_init_one,
1304         .remove = sta2x11_vip_remove_one,
1305         .id_table = sta2x11_vip_pci_tbl,
1306 #ifdef CONFIG_PM
1307         .suspend = sta2x11_vip_suspend,
1308         .resume = sta2x11_vip_resume,
1309 #endif
1310 };
1311 
1312 static int __init sta2x11_vip_init_module(void)
1313 {
1314         return pci_register_driver(&sta2x11_vip_driver);
1315 }
1316 
1317 static void __exit sta2x11_vip_exit_module(void)
1318 {
1319         pci_unregister_driver(&sta2x11_vip_driver);
1320 }
1321 
1322 #ifdef MODULE
1323 module_init(sta2x11_vip_init_module);
1324 module_exit(sta2x11_vip_exit_module);
1325 #else
1326 late_initcall_sync(sta2x11_vip_init_module);
1327 #endif
1328 
1329 MODULE_DESCRIPTION("STA2X11 Video Input Port driver");
1330 MODULE_AUTHOR("Wind River");
1331 MODULE_LICENSE("GPL v2");
1332 MODULE_SUPPORTED_DEVICE("sta2x11 video input");
1333 MODULE_VERSION(DRV_VERSION);
1334 MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl);
1335 

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