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-rw-r--r--drivers/media/video/blackfin/Kconfig10
-rw-r--r--drivers/media/video/blackfin/Makefile2
-rw-r--r--drivers/media/video/blackfin/bfin_capture.c1068
-rw-r--r--drivers/media/video/blackfin/ppi.c271
4 files changed, 0 insertions, 1351 deletions
diff --git a/drivers/media/video/blackfin/Kconfig b/drivers/media/video/blackfin/Kconfig
deleted file mode 100644
index ecd5323768b7..000000000000
--- a/drivers/media/video/blackfin/Kconfig
+++ /dev/null
@@ -1,10 +0,0 @@
1config VIDEO_BLACKFIN_CAPTURE
2 tristate "Blackfin Video Capture Driver"
3 depends on VIDEO_V4L2 && BLACKFIN && I2C
4 select VIDEOBUF2_DMA_CONTIG
5 help
6 V4L2 bridge driver for Blackfin video capture device.
7 Choose PPI or EPPI as its interface.
8
9 To compile this driver as a module, choose M here: the
10 module will be called bfin_video_capture.
diff --git a/drivers/media/video/blackfin/Makefile b/drivers/media/video/blackfin/Makefile
deleted file mode 100644
index aa3a0a216387..000000000000
--- a/drivers/media/video/blackfin/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
1bfin_video_capture-objs := bfin_capture.o ppi.o
2obj-$(CONFIG_VIDEO_BLACKFIN_CAPTURE) += bfin_video_capture.o
diff --git a/drivers/media/video/blackfin/bfin_capture.c b/drivers/media/video/blackfin/bfin_capture.c
deleted file mode 100644
index 1677623d8296..000000000000
--- a/drivers/media/video/blackfin/bfin_capture.c
+++ /dev/null
@@ -1,1068 +0,0 @@
1/*
2 * Analog Devices video capture driver
3 *
4 * Copyright (c) 2011 Analog Devices Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#include <linux/completion.h>
21#include <linux/delay.h>
22#include <linux/errno.h>
23#include <linux/fs.h>
24#include <linux/i2c.h>
25#include <linux/init.h>
26#include <linux/interrupt.h>
27#include <linux/io.h>
28#include <linux/mm.h>
29#include <linux/module.h>
30#include <linux/platform_device.h>
31#include <linux/slab.h>
32#include <linux/time.h>
33#include <linux/types.h>
34
35#include <media/v4l2-chip-ident.h>
36#include <media/v4l2-common.h>
37#include <media/v4l2-ctrls.h>
38#include <media/v4l2-device.h>
39#include <media/v4l2-ioctl.h>
40#include <media/videobuf2-dma-contig.h>
41
42#include <asm/dma.h>
43
44#include <media/blackfin/bfin_capture.h>
45#include <media/blackfin/ppi.h>
46
47#define CAPTURE_DRV_NAME "bfin_capture"
48#define BCAP_MIN_NUM_BUF 2
49
50struct bcap_format {
51 char *desc;
52 u32 pixelformat;
53 enum v4l2_mbus_pixelcode mbus_code;
54 int bpp; /* bits per pixel */
55};
56
57struct bcap_buffer {
58 struct vb2_buffer vb;
59 struct list_head list;
60};
61
62struct bcap_device {
63 /* capture device instance */
64 struct v4l2_device v4l2_dev;
65 /* v4l2 control handler */
66 struct v4l2_ctrl_handler ctrl_handler;
67 /* device node data */
68 struct video_device *video_dev;
69 /* sub device instance */
70 struct v4l2_subdev *sd;
71 /* capture config */
72 struct bfin_capture_config *cfg;
73 /* ppi interface */
74 struct ppi_if *ppi;
75 /* current input */
76 unsigned int cur_input;
77 /* current selected standard */
78 v4l2_std_id std;
79 /* used to store pixel format */
80 struct v4l2_pix_format fmt;
81 /* bits per pixel*/
82 int bpp;
83 /* used to store sensor supported format */
84 struct bcap_format *sensor_formats;
85 /* number of sensor formats array */
86 int num_sensor_formats;
87 /* pointing to current video buffer */
88 struct bcap_buffer *cur_frm;
89 /* pointing to next video buffer */
90 struct bcap_buffer *next_frm;
91 /* buffer queue used in videobuf2 */
92 struct vb2_queue buffer_queue;
93 /* allocator-specific contexts for each plane */
94 struct vb2_alloc_ctx *alloc_ctx;
95 /* queue of filled frames */
96 struct list_head dma_queue;
97 /* used in videobuf2 callback */
98 spinlock_t lock;
99 /* used to access capture device */
100 struct mutex mutex;
101 /* used to wait ppi to complete one transfer */
102 struct completion comp;
103 /* prepare to stop */
104 bool stop;
105};
106
107struct bcap_fh {
108 struct v4l2_fh fh;
109 /* indicates whether this file handle is doing IO */
110 bool io_allowed;
111};
112
113static const struct bcap_format bcap_formats[] = {
114 {
115 .desc = "YCbCr 4:2:2 Interleaved UYVY",
116 .pixelformat = V4L2_PIX_FMT_UYVY,
117 .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8,
118 .bpp = 16,
119 },
120 {
121 .desc = "YCbCr 4:2:2 Interleaved YUYV",
122 .pixelformat = V4L2_PIX_FMT_YUYV,
123 .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8,
124 .bpp = 16,
125 },
126 {
127 .desc = "RGB 565",
128 .pixelformat = V4L2_PIX_FMT_RGB565,
129 .mbus_code = V4L2_MBUS_FMT_RGB565_2X8_LE,
130 .bpp = 16,
131 },
132 {
133 .desc = "RGB 444",
134 .pixelformat = V4L2_PIX_FMT_RGB444,
135 .mbus_code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE,
136 .bpp = 16,
137 },
138
139};
140#define BCAP_MAX_FMTS ARRAY_SIZE(bcap_formats)
141
142static irqreturn_t bcap_isr(int irq, void *dev_id);
143
144static struct bcap_buffer *to_bcap_vb(struct vb2_buffer *vb)
145{
146 return container_of(vb, struct bcap_buffer, vb);
147}
148
149static int bcap_init_sensor_formats(struct bcap_device *bcap_dev)
150{
151 enum v4l2_mbus_pixelcode code;
152 struct bcap_format *sf;
153 unsigned int num_formats = 0;
154 int i, j;
155
156 while (!v4l2_subdev_call(bcap_dev->sd, video,
157 enum_mbus_fmt, num_formats, &code))
158 num_formats++;
159 if (!num_formats)
160 return -ENXIO;
161
162 sf = kzalloc(num_formats * sizeof(*sf), GFP_KERNEL);
163 if (!sf)
164 return -ENOMEM;
165
166 for (i = 0; i < num_formats; i++) {
167 v4l2_subdev_call(bcap_dev->sd, video,
168 enum_mbus_fmt, i, &code);
169 for (j = 0; j < BCAP_MAX_FMTS; j++)
170 if (code == bcap_formats[j].mbus_code)
171 break;
172 if (j == BCAP_MAX_FMTS) {
173 /* we don't allow this sensor working with our bridge */
174 kfree(sf);
175 return -EINVAL;
176 }
177 sf[i] = bcap_formats[j];
178 }
179 bcap_dev->sensor_formats = sf;
180 bcap_dev->num_sensor_formats = num_formats;
181 return 0;
182}
183
184static void bcap_free_sensor_formats(struct bcap_device *bcap_dev)
185{
186 bcap_dev->num_sensor_formats = 0;
187 kfree(bcap_dev->sensor_formats);
188 bcap_dev->sensor_formats = NULL;
189}
190
191static int bcap_open(struct file *file)
192{
193 struct bcap_device *bcap_dev = video_drvdata(file);
194 struct video_device *vfd = bcap_dev->video_dev;
195 struct bcap_fh *bcap_fh;
196
197 if (!bcap_dev->sd) {
198 v4l2_err(&bcap_dev->v4l2_dev, "No sub device registered\n");
199 return -ENODEV;
200 }
201
202 bcap_fh = kzalloc(sizeof(*bcap_fh), GFP_KERNEL);
203 if (!bcap_fh) {
204 v4l2_err(&bcap_dev->v4l2_dev,
205 "unable to allocate memory for file handle object\n");
206 return -ENOMEM;
207 }
208
209 v4l2_fh_init(&bcap_fh->fh, vfd);
210
211 /* store pointer to v4l2_fh in private_data member of file */
212 file->private_data = &bcap_fh->fh;
213 v4l2_fh_add(&bcap_fh->fh);
214 bcap_fh->io_allowed = false;
215 return 0;
216}
217
218static int bcap_release(struct file *file)
219{
220 struct bcap_device *bcap_dev = video_drvdata(file);
221 struct v4l2_fh *fh = file->private_data;
222 struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh);
223
224 /* if this instance is doing IO */
225 if (bcap_fh->io_allowed)
226 vb2_queue_release(&bcap_dev->buffer_queue);
227
228 file->private_data = NULL;
229 v4l2_fh_del(&bcap_fh->fh);
230 v4l2_fh_exit(&bcap_fh->fh);
231 kfree(bcap_fh);
232 return 0;
233}
234
235static int bcap_mmap(struct file *file, struct vm_area_struct *vma)
236{
237 struct bcap_device *bcap_dev = video_drvdata(file);
238 int ret;
239
240 if (mutex_lock_interruptible(&bcap_dev->mutex))
241 return -ERESTARTSYS;
242 ret = vb2_mmap(&bcap_dev->buffer_queue, vma);
243 mutex_unlock(&bcap_dev->mutex);
244 return ret;
245}
246
247#ifndef CONFIG_MMU
248static unsigned long bcap_get_unmapped_area(struct file *file,
249 unsigned long addr,
250 unsigned long len,
251 unsigned long pgoff,
252 unsigned long flags)
253{
254 struct bcap_device *bcap_dev = video_drvdata(file);
255
256 return vb2_get_unmapped_area(&bcap_dev->buffer_queue,
257 addr,
258 len,
259 pgoff,
260 flags);
261}
262#endif
263
264static unsigned int bcap_poll(struct file *file, poll_table *wait)
265{
266 struct bcap_device *bcap_dev = video_drvdata(file);
267 unsigned int res;
268
269 mutex_lock(&bcap_dev->mutex);
270 res = vb2_poll(&bcap_dev->buffer_queue, file, wait);
271 mutex_unlock(&bcap_dev->mutex);
272 return res;
273}
274
275static int bcap_queue_setup(struct vb2_queue *vq,
276 const struct v4l2_format *fmt,
277 unsigned int *nbuffers, unsigned int *nplanes,
278 unsigned int sizes[], void *alloc_ctxs[])
279{
280 struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
281
282 if (*nbuffers < BCAP_MIN_NUM_BUF)
283 *nbuffers = BCAP_MIN_NUM_BUF;
284
285 *nplanes = 1;
286 sizes[0] = bcap_dev->fmt.sizeimage;
287 alloc_ctxs[0] = bcap_dev->alloc_ctx;
288
289 return 0;
290}
291
292static int bcap_buffer_init(struct vb2_buffer *vb)
293{
294 struct bcap_buffer *buf = to_bcap_vb(vb);
295
296 INIT_LIST_HEAD(&buf->list);
297 return 0;
298}
299
300static int bcap_buffer_prepare(struct vb2_buffer *vb)
301{
302 struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
303 struct bcap_buffer *buf = to_bcap_vb(vb);
304 unsigned long size;
305
306 size = bcap_dev->fmt.sizeimage;
307 if (vb2_plane_size(vb, 0) < size) {
308 v4l2_err(&bcap_dev->v4l2_dev, "buffer too small (%lu < %lu)\n",
309 vb2_plane_size(vb, 0), size);
310 return -EINVAL;
311 }
312 vb2_set_plane_payload(&buf->vb, 0, size);
313
314 return 0;
315}
316
317static void bcap_buffer_queue(struct vb2_buffer *vb)
318{
319 struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
320 struct bcap_buffer *buf = to_bcap_vb(vb);
321 unsigned long flags;
322
323 spin_lock_irqsave(&bcap_dev->lock, flags);
324 list_add_tail(&buf->list, &bcap_dev->dma_queue);
325 spin_unlock_irqrestore(&bcap_dev->lock, flags);
326}
327
328static void bcap_buffer_cleanup(struct vb2_buffer *vb)
329{
330 struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
331 struct bcap_buffer *buf = to_bcap_vb(vb);
332 unsigned long flags;
333
334 spin_lock_irqsave(&bcap_dev->lock, flags);
335 list_del_init(&buf->list);
336 spin_unlock_irqrestore(&bcap_dev->lock, flags);
337}
338
339static void bcap_lock(struct vb2_queue *vq)
340{
341 struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
342 mutex_lock(&bcap_dev->mutex);
343}
344
345static void bcap_unlock(struct vb2_queue *vq)
346{
347 struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
348 mutex_unlock(&bcap_dev->mutex);
349}
350
351static int bcap_start_streaming(struct vb2_queue *vq, unsigned int count)
352{
353 struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
354 struct ppi_if *ppi = bcap_dev->ppi;
355 struct ppi_params params;
356 int ret;
357
358 /* enable streamon on the sub device */
359 ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 1);
360 if (ret && (ret != -ENOIOCTLCMD)) {
361 v4l2_err(&bcap_dev->v4l2_dev, "stream on failed in subdev\n");
362 return ret;
363 }
364
365 /* set ppi params */
366 params.width = bcap_dev->fmt.width;
367 params.height = bcap_dev->fmt.height;
368 params.bpp = bcap_dev->bpp;
369 params.ppi_control = bcap_dev->cfg->ppi_control;
370 params.int_mask = bcap_dev->cfg->int_mask;
371 params.blank_clocks = bcap_dev->cfg->blank_clocks;
372 ret = ppi->ops->set_params(ppi, &params);
373 if (ret < 0) {
374 v4l2_err(&bcap_dev->v4l2_dev,
375 "Error in setting ppi params\n");
376 return ret;
377 }
378
379 /* attach ppi DMA irq handler */
380 ret = ppi->ops->attach_irq(ppi, bcap_isr);
381 if (ret < 0) {
382 v4l2_err(&bcap_dev->v4l2_dev,
383 "Error in attaching interrupt handler\n");
384 return ret;
385 }
386
387 INIT_COMPLETION(bcap_dev->comp);
388 bcap_dev->stop = false;
389 return 0;
390}
391
392static int bcap_stop_streaming(struct vb2_queue *vq)
393{
394 struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
395 struct ppi_if *ppi = bcap_dev->ppi;
396 int ret;
397
398 if (!vb2_is_streaming(vq))
399 return 0;
400
401 bcap_dev->stop = true;
402 wait_for_completion(&bcap_dev->comp);
403 ppi->ops->stop(ppi);
404 ppi->ops->detach_irq(ppi);
405 ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 0);
406 if (ret && (ret != -ENOIOCTLCMD))
407 v4l2_err(&bcap_dev->v4l2_dev,
408 "stream off failed in subdev\n");
409
410 /* release all active buffers */
411 while (!list_empty(&bcap_dev->dma_queue)) {
412 bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next,
413 struct bcap_buffer, list);
414 list_del(&bcap_dev->next_frm->list);
415 vb2_buffer_done(&bcap_dev->next_frm->vb, VB2_BUF_STATE_ERROR);
416 }
417 return 0;
418}
419
420static struct vb2_ops bcap_video_qops = {
421 .queue_setup = bcap_queue_setup,
422 .buf_init = bcap_buffer_init,
423 .buf_prepare = bcap_buffer_prepare,
424 .buf_cleanup = bcap_buffer_cleanup,
425 .buf_queue = bcap_buffer_queue,
426 .wait_prepare = bcap_unlock,
427 .wait_finish = bcap_lock,
428 .start_streaming = bcap_start_streaming,
429 .stop_streaming = bcap_stop_streaming,
430};
431
432static int bcap_reqbufs(struct file *file, void *priv,
433 struct v4l2_requestbuffers *req_buf)
434{
435 struct bcap_device *bcap_dev = video_drvdata(file);
436 struct vb2_queue *vq = &bcap_dev->buffer_queue;
437 struct v4l2_fh *fh = file->private_data;
438 struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh);
439
440 if (vb2_is_busy(vq))
441 return -EBUSY;
442
443 bcap_fh->io_allowed = true;
444
445 return vb2_reqbufs(vq, req_buf);
446}
447
448static int bcap_querybuf(struct file *file, void *priv,
449 struct v4l2_buffer *buf)
450{
451 struct bcap_device *bcap_dev = video_drvdata(file);
452
453 return vb2_querybuf(&bcap_dev->buffer_queue, buf);
454}
455
456static int bcap_qbuf(struct file *file, void *priv,
457 struct v4l2_buffer *buf)
458{
459 struct bcap_device *bcap_dev = video_drvdata(file);
460 struct v4l2_fh *fh = file->private_data;
461 struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh);
462
463 if (!bcap_fh->io_allowed)
464 return -EBUSY;
465
466 return vb2_qbuf(&bcap_dev->buffer_queue, buf);
467}
468
469static int bcap_dqbuf(struct file *file, void *priv,
470 struct v4l2_buffer *buf)
471{
472 struct bcap_device *bcap_dev = video_drvdata(file);
473 struct v4l2_fh *fh = file->private_data;
474 struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh);
475
476 if (!bcap_fh->io_allowed)
477 return -EBUSY;
478
479 return vb2_dqbuf(&bcap_dev->buffer_queue,
480 buf, file->f_flags & O_NONBLOCK);
481}
482
483static irqreturn_t bcap_isr(int irq, void *dev_id)
484{
485 struct ppi_if *ppi = dev_id;
486 struct bcap_device *bcap_dev = ppi->priv;
487 struct timeval timevalue;
488 struct vb2_buffer *vb = &bcap_dev->cur_frm->vb;
489 dma_addr_t addr;
490
491 spin_lock(&bcap_dev->lock);
492
493 if (bcap_dev->cur_frm != bcap_dev->next_frm) {
494 do_gettimeofday(&timevalue);
495 vb->v4l2_buf.timestamp = timevalue;
496 vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
497 bcap_dev->cur_frm = bcap_dev->next_frm;
498 }
499
500 ppi->ops->stop(ppi);
501
502 if (bcap_dev->stop) {
503 complete(&bcap_dev->comp);
504 } else {
505 if (!list_empty(&bcap_dev->dma_queue)) {
506 bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next,
507 struct bcap_buffer, list);
508 list_del(&bcap_dev->next_frm->list);
509 addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->next_frm->vb, 0);
510 ppi->ops->update_addr(ppi, (unsigned long)addr);
511 }
512 ppi->ops->start(ppi);
513 }
514
515 spin_unlock(&bcap_dev->lock);
516
517 return IRQ_HANDLED;
518}
519
520static int bcap_streamon(struct file *file, void *priv,
521 enum v4l2_buf_type buf_type)
522{
523 struct bcap_device *bcap_dev = video_drvdata(file);
524 struct bcap_fh *fh = file->private_data;
525 struct ppi_if *ppi = bcap_dev->ppi;
526 dma_addr_t addr;
527 int ret;
528
529 if (!fh->io_allowed)
530 return -EBUSY;
531
532 /* call streamon to start streaming in videobuf */
533 ret = vb2_streamon(&bcap_dev->buffer_queue, buf_type);
534 if (ret)
535 return ret;
536
537 /* if dma queue is empty, return error */
538 if (list_empty(&bcap_dev->dma_queue)) {
539 v4l2_err(&bcap_dev->v4l2_dev, "dma queue is empty\n");
540 ret = -EINVAL;
541 goto err;
542 }
543
544 /* get the next frame from the dma queue */
545 bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next,
546 struct bcap_buffer, list);
547 bcap_dev->cur_frm = bcap_dev->next_frm;
548 /* remove buffer from the dma queue */
549 list_del(&bcap_dev->cur_frm->list);
550 addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0);
551 /* update DMA address */
552 ppi->ops->update_addr(ppi, (unsigned long)addr);
553 /* enable ppi */
554 ppi->ops->start(ppi);
555
556 return 0;
557err:
558 vb2_streamoff(&bcap_dev->buffer_queue, buf_type);
559 return ret;
560}
561
562static int bcap_streamoff(struct file *file, void *priv,
563 enum v4l2_buf_type buf_type)
564{
565 struct bcap_device *bcap_dev = video_drvdata(file);
566 struct bcap_fh *fh = file->private_data;
567
568 if (!fh->io_allowed)
569 return -EBUSY;
570
571 return vb2_streamoff(&bcap_dev->buffer_queue, buf_type);
572}
573
574static int bcap_querystd(struct file *file, void *priv, v4l2_std_id *std)
575{
576 struct bcap_device *bcap_dev = video_drvdata(file);
577
578 return v4l2_subdev_call(bcap_dev->sd, video, querystd, std);
579}
580
581static int bcap_g_std(struct file *file, void *priv, v4l2_std_id *std)
582{
583 struct bcap_device *bcap_dev = video_drvdata(file);
584
585 *std = bcap_dev->std;
586 return 0;
587}
588
589static int bcap_s_std(struct file *file, void *priv, v4l2_std_id *std)
590{
591 struct bcap_device *bcap_dev = video_drvdata(file);
592 int ret;
593
594 if (vb2_is_busy(&bcap_dev->buffer_queue))
595 return -EBUSY;
596
597 ret = v4l2_subdev_call(bcap_dev->sd, core, s_std, *std);
598 if (ret < 0)
599 return ret;
600
601 bcap_dev->std = *std;
602 return 0;
603}
604
605static int bcap_enum_input(struct file *file, void *priv,
606 struct v4l2_input *input)
607{
608 struct bcap_device *bcap_dev = video_drvdata(file);
609 struct bfin_capture_config *config = bcap_dev->cfg;
610 int ret;
611 u32 status;
612
613 if (input->index >= config->num_inputs)
614 return -EINVAL;
615
616 *input = config->inputs[input->index];
617 /* get input status */
618 ret = v4l2_subdev_call(bcap_dev->sd, video, g_input_status, &status);
619 if (!ret)
620 input->status = status;
621 return 0;
622}
623
624static int bcap_g_input(struct file *file, void *priv, unsigned int *index)
625{
626 struct bcap_device *bcap_dev = video_drvdata(file);
627
628 *index = bcap_dev->cur_input;
629 return 0;
630}
631
632static int bcap_s_input(struct file *file, void *priv, unsigned int index)
633{
634 struct bcap_device *bcap_dev = video_drvdata(file);
635 struct bfin_capture_config *config = bcap_dev->cfg;
636 struct bcap_route *route;
637 int ret;
638
639 if (vb2_is_busy(&bcap_dev->buffer_queue))
640 return -EBUSY;
641
642 if (index >= config->num_inputs)
643 return -EINVAL;
644
645 route = &config->routes[index];
646 ret = v4l2_subdev_call(bcap_dev->sd, video, s_routing,
647 route->input, route->output, 0);
648 if ((ret < 0) && (ret != -ENOIOCTLCMD)) {
649 v4l2_err(&bcap_dev->v4l2_dev, "Failed to set input\n");
650 return ret;
651 }
652 bcap_dev->cur_input = index;
653 return 0;
654}
655
656static int bcap_try_format(struct bcap_device *bcap,
657 struct v4l2_pix_format *pixfmt,
658 enum v4l2_mbus_pixelcode *mbus_code,
659 int *bpp)
660{
661 struct bcap_format *sf = bcap->sensor_formats;
662 struct bcap_format *fmt = NULL;
663 struct v4l2_mbus_framefmt mbus_fmt;
664 int ret, i;
665
666 for (i = 0; i < bcap->num_sensor_formats; i++) {
667 fmt = &sf[i];
668 if (pixfmt->pixelformat == fmt->pixelformat)
669 break;
670 }
671 if (i == bcap->num_sensor_formats)
672 fmt = &sf[0];
673
674 if (mbus_code)
675 *mbus_code = fmt->mbus_code;
676 if (bpp)
677 *bpp = fmt->bpp;
678 v4l2_fill_mbus_format(&mbus_fmt, pixfmt, fmt->mbus_code);
679 ret = v4l2_subdev_call(bcap->sd, video,
680 try_mbus_fmt, &mbus_fmt);
681 if (ret < 0)
682 return ret;
683 v4l2_fill_pix_format(pixfmt, &mbus_fmt);
684 pixfmt->bytesperline = pixfmt->width * fmt->bpp / 8;
685 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
686 return 0;
687}
688
689static int bcap_enum_fmt_vid_cap(struct file *file, void *priv,
690 struct v4l2_fmtdesc *fmt)
691{
692 struct bcap_device *bcap_dev = video_drvdata(file);
693 struct bcap_format *sf = bcap_dev->sensor_formats;
694
695 if (fmt->index >= bcap_dev->num_sensor_formats)
696 return -EINVAL;
697
698 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
699 strlcpy(fmt->description,
700 sf[fmt->index].desc,
701 sizeof(fmt->description));
702 fmt->pixelformat = sf[fmt->index].pixelformat;
703 return 0;
704}
705
706static int bcap_try_fmt_vid_cap(struct file *file, void *priv,
707 struct v4l2_format *fmt)
708{
709 struct bcap_device *bcap_dev = video_drvdata(file);
710 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
711
712 return bcap_try_format(bcap_dev, pixfmt, NULL, NULL);
713}
714
715static int bcap_g_fmt_vid_cap(struct file *file, void *priv,
716 struct v4l2_format *fmt)
717{
718 struct bcap_device *bcap_dev = video_drvdata(file);
719
720 fmt->fmt.pix = bcap_dev->fmt;
721 return 0;
722}
723
724static int bcap_s_fmt_vid_cap(struct file *file, void *priv,
725 struct v4l2_format *fmt)
726{
727 struct bcap_device *bcap_dev = video_drvdata(file);
728 struct v4l2_mbus_framefmt mbus_fmt;
729 enum v4l2_mbus_pixelcode mbus_code;
730 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
731 int ret, bpp;
732
733 if (vb2_is_busy(&bcap_dev->buffer_queue))
734 return -EBUSY;
735
736 /* see if format works */
737 ret = bcap_try_format(bcap_dev, pixfmt, &mbus_code, &bpp);
738 if (ret < 0)
739 return ret;
740
741 v4l2_fill_mbus_format(&mbus_fmt, pixfmt, mbus_code);
742 ret = v4l2_subdev_call(bcap_dev->sd, video, s_mbus_fmt, &mbus_fmt);
743 if (ret < 0)
744 return ret;
745 bcap_dev->fmt = *pixfmt;
746 bcap_dev->bpp = bpp;
747 return 0;
748}
749
750static int bcap_querycap(struct file *file, void *priv,
751 struct v4l2_capability *cap)
752{
753 struct bcap_device *bcap_dev = video_drvdata(file);
754
755 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
756 strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
757 strlcpy(cap->bus_info, "Blackfin Platform", sizeof(cap->bus_info));
758 strlcpy(cap->card, bcap_dev->cfg->card_name, sizeof(cap->card));
759 return 0;
760}
761
762static int bcap_g_parm(struct file *file, void *fh,
763 struct v4l2_streamparm *a)
764{
765 struct bcap_device *bcap_dev = video_drvdata(file);
766
767 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
768 return -EINVAL;
769 return v4l2_subdev_call(bcap_dev->sd, video, g_parm, a);
770}
771
772static int bcap_s_parm(struct file *file, void *fh,
773 struct v4l2_streamparm *a)
774{
775 struct bcap_device *bcap_dev = video_drvdata(file);
776
777 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
778 return -EINVAL;
779 return v4l2_subdev_call(bcap_dev->sd, video, s_parm, a);
780}
781
782static int bcap_g_chip_ident(struct file *file, void *priv,
783 struct v4l2_dbg_chip_ident *chip)
784{
785 struct bcap_device *bcap_dev = video_drvdata(file);
786
787 chip->ident = V4L2_IDENT_NONE;
788 chip->revision = 0;
789 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
790 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
791 return -EINVAL;
792
793 return v4l2_subdev_call(bcap_dev->sd, core,
794 g_chip_ident, chip);
795}
796
797#ifdef CONFIG_VIDEO_ADV_DEBUG
798static int bcap_dbg_g_register(struct file *file, void *priv,
799 struct v4l2_dbg_register *reg)
800{
801 struct bcap_device *bcap_dev = video_drvdata(file);
802
803 return v4l2_subdev_call(bcap_dev->sd, core,
804 g_register, reg);
805}
806
807static int bcap_dbg_s_register(struct file *file, void *priv,
808 struct v4l2_dbg_register *reg)
809{
810 struct bcap_device *bcap_dev = video_drvdata(file);
811
812 return v4l2_subdev_call(bcap_dev->sd, core,
813 s_register, reg);
814}
815#endif
816
817static int bcap_log_status(struct file *file, void *priv)
818{
819 struct bcap_device *bcap_dev = video_drvdata(file);
820 /* status for sub devices */
821 v4l2_device_call_all(&bcap_dev->v4l2_dev, 0, core, log_status);
822 return 0;
823}
824
825static const struct v4l2_ioctl_ops bcap_ioctl_ops = {
826 .vidioc_querycap = bcap_querycap,
827 .vidioc_g_fmt_vid_cap = bcap_g_fmt_vid_cap,
828 .vidioc_enum_fmt_vid_cap = bcap_enum_fmt_vid_cap,
829 .vidioc_s_fmt_vid_cap = bcap_s_fmt_vid_cap,
830 .vidioc_try_fmt_vid_cap = bcap_try_fmt_vid_cap,
831 .vidioc_enum_input = bcap_enum_input,
832 .vidioc_g_input = bcap_g_input,
833 .vidioc_s_input = bcap_s_input,
834 .vidioc_querystd = bcap_querystd,
835 .vidioc_s_std = bcap_s_std,
836 .vidioc_g_std = bcap_g_std,
837 .vidioc_reqbufs = bcap_reqbufs,
838 .vidioc_querybuf = bcap_querybuf,
839 .vidioc_qbuf = bcap_qbuf,
840 .vidioc_dqbuf = bcap_dqbuf,
841 .vidioc_streamon = bcap_streamon,
842 .vidioc_streamoff = bcap_streamoff,
843 .vidioc_g_parm = bcap_g_parm,
844 .vidioc_s_parm = bcap_s_parm,
845 .vidioc_g_chip_ident = bcap_g_chip_ident,
846#ifdef CONFIG_VIDEO_ADV_DEBUG
847 .vidioc_g_register = bcap_dbg_g_register,
848 .vidioc_s_register = bcap_dbg_s_register,
849#endif
850 .vidioc_log_status = bcap_log_status,
851};
852
853static struct v4l2_file_operations bcap_fops = {
854 .owner = THIS_MODULE,
855 .open = bcap_open,
856 .release = bcap_release,
857 .unlocked_ioctl = video_ioctl2,
858 .mmap = bcap_mmap,
859#ifndef CONFIG_MMU
860 .get_unmapped_area = bcap_get_unmapped_area,
861#endif
862 .poll = bcap_poll
863};
864
865static int __devinit bcap_probe(struct platform_device *pdev)
866{
867 struct bcap_device *bcap_dev;
868 struct video_device *vfd;
869 struct i2c_adapter *i2c_adap;
870 struct bfin_capture_config *config;
871 struct vb2_queue *q;
872 int ret;
873
874 config = pdev->dev.platform_data;
875 if (!config) {
876 v4l2_err(pdev->dev.driver, "Unable to get board config\n");
877 return -ENODEV;
878 }
879
880 bcap_dev = kzalloc(sizeof(*bcap_dev), GFP_KERNEL);
881 if (!bcap_dev) {
882 v4l2_err(pdev->dev.driver, "Unable to alloc bcap_dev\n");
883 return -ENOMEM;
884 }
885
886 bcap_dev->cfg = config;
887
888 bcap_dev->ppi = ppi_create_instance(config->ppi_info);
889 if (!bcap_dev->ppi) {
890 v4l2_err(pdev->dev.driver, "Unable to create ppi\n");
891 ret = -ENODEV;
892 goto err_free_dev;
893 }
894 bcap_dev->ppi->priv = bcap_dev;
895
896 bcap_dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
897 if (IS_ERR(bcap_dev->alloc_ctx)) {
898 ret = PTR_ERR(bcap_dev->alloc_ctx);
899 goto err_free_ppi;
900 }
901
902 vfd = video_device_alloc();
903 if (!vfd) {
904 ret = -ENOMEM;
905 v4l2_err(pdev->dev.driver, "Unable to alloc video device\n");
906 goto err_cleanup_ctx;
907 }
908
909 /* initialize field of video device */
910 vfd->release = video_device_release;
911 vfd->fops = &bcap_fops;
912 vfd->ioctl_ops = &bcap_ioctl_ops;
913 vfd->tvnorms = 0;
914 vfd->v4l2_dev = &bcap_dev->v4l2_dev;
915 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
916 strncpy(vfd->name, CAPTURE_DRV_NAME, sizeof(vfd->name));
917 bcap_dev->video_dev = vfd;
918
919 ret = v4l2_device_register(&pdev->dev, &bcap_dev->v4l2_dev);
920 if (ret) {
921 v4l2_err(pdev->dev.driver,
922 "Unable to register v4l2 device\n");
923 goto err_release_vdev;
924 }
925 v4l2_info(&bcap_dev->v4l2_dev, "v4l2 device registered\n");
926
927 bcap_dev->v4l2_dev.ctrl_handler = &bcap_dev->ctrl_handler;
928 ret = v4l2_ctrl_handler_init(&bcap_dev->ctrl_handler, 0);
929 if (ret) {
930 v4l2_err(&bcap_dev->v4l2_dev,
931 "Unable to init control handler\n");
932 goto err_unreg_v4l2;
933 }
934
935 spin_lock_init(&bcap_dev->lock);
936 /* initialize queue */
937 q = &bcap_dev->buffer_queue;
938 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
939 q->io_modes = VB2_MMAP;
940 q->drv_priv = bcap_dev;
941 q->buf_struct_size = sizeof(struct bcap_buffer);
942 q->ops = &bcap_video_qops;
943 q->mem_ops = &vb2_dma_contig_memops;
944
945 vb2_queue_init(q);
946
947 mutex_init(&bcap_dev->mutex);
948 init_completion(&bcap_dev->comp);
949
950 /* init video dma queues */
951 INIT_LIST_HEAD(&bcap_dev->dma_queue);
952
953 vfd->lock = &bcap_dev->mutex;
954
955 /* register video device */
956 ret = video_register_device(bcap_dev->video_dev, VFL_TYPE_GRABBER, -1);
957 if (ret) {
958 v4l2_err(&bcap_dev->v4l2_dev,
959 "Unable to register video device\n");
960 goto err_free_handler;
961 }
962 video_set_drvdata(bcap_dev->video_dev, bcap_dev);
963 v4l2_info(&bcap_dev->v4l2_dev, "video device registered as: %s\n",
964 video_device_node_name(vfd));
965
966 /* load up the subdevice */
967 i2c_adap = i2c_get_adapter(config->i2c_adapter_id);
968 if (!i2c_adap) {
969 v4l2_err(&bcap_dev->v4l2_dev,
970 "Unable to find i2c adapter\n");
971 goto err_unreg_vdev;
972
973 }
974 bcap_dev->sd = v4l2_i2c_new_subdev_board(&bcap_dev->v4l2_dev,
975 i2c_adap,
976 &config->board_info,
977 NULL);
978 if (bcap_dev->sd) {
979 int i;
980 /* update tvnorms from the sub devices */
981 for (i = 0; i < config->num_inputs; i++)
982 vfd->tvnorms |= config->inputs[i].std;
983 } else {
984 v4l2_err(&bcap_dev->v4l2_dev,
985 "Unable to register sub device\n");
986 goto err_unreg_vdev;
987 }
988
989 v4l2_info(&bcap_dev->v4l2_dev, "v4l2 sub device registered\n");
990
991 /* now we can probe the default state */
992 if (vfd->tvnorms) {
993 v4l2_std_id std;
994 ret = v4l2_subdev_call(bcap_dev->sd, core, g_std, &std);
995 if (ret) {
996 v4l2_err(&bcap_dev->v4l2_dev,
997 "Unable to get std\n");
998 goto err_unreg_vdev;
999 }
1000 bcap_dev->std = std;
1001 }
1002 ret = bcap_init_sensor_formats(bcap_dev);
1003 if (ret) {
1004 v4l2_err(&bcap_dev->v4l2_dev,
1005 "Unable to create sensor formats table\n");
1006 goto err_unreg_vdev;
1007 }
1008 return 0;
1009err_unreg_vdev:
1010 video_unregister_device(bcap_dev->video_dev);
1011 bcap_dev->video_dev = NULL;
1012err_free_handler:
1013 v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler);
1014err_unreg_v4l2:
1015 v4l2_device_unregister(&bcap_dev->v4l2_dev);
1016err_release_vdev:
1017 if (bcap_dev->video_dev)
1018 video_device_release(bcap_dev->video_dev);
1019err_cleanup_ctx:
1020 vb2_dma_contig_cleanup_ctx(bcap_dev->alloc_ctx);
1021err_free_ppi:
1022 ppi_delete_instance(bcap_dev->ppi);
1023err_free_dev:
1024 kfree(bcap_dev);
1025 return ret;
1026}
1027
1028static int __devexit bcap_remove(struct platform_device *pdev)
1029{
1030 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1031 struct bcap_device *bcap_dev = container_of(v4l2_dev,
1032 struct bcap_device, v4l2_dev);
1033
1034 bcap_free_sensor_formats(bcap_dev);
1035 video_unregister_device(bcap_dev->video_dev);
1036 v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler);
1037 v4l2_device_unregister(v4l2_dev);
1038 vb2_dma_contig_cleanup_ctx(bcap_dev->alloc_ctx);
1039 ppi_delete_instance(bcap_dev->ppi);
1040 kfree(bcap_dev);
1041 return 0;
1042}
1043
1044static struct platform_driver bcap_driver = {
1045 .driver = {
1046 .name = CAPTURE_DRV_NAME,
1047 .owner = THIS_MODULE,
1048 },
1049 .probe = bcap_probe,
1050 .remove = __devexit_p(bcap_remove),
1051};
1052
1053static __init int bcap_init(void)
1054{
1055 return platform_driver_register(&bcap_driver);
1056}
1057
1058static __exit void bcap_exit(void)
1059{
1060 platform_driver_unregister(&bcap_driver);
1061}
1062
1063module_init(bcap_init);
1064module_exit(bcap_exit);
1065
1066MODULE_DESCRIPTION("Analog Devices blackfin video capture driver");
1067MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
1068MODULE_LICENSE("GPL v2");
diff --git a/drivers/media/video/blackfin/ppi.c b/drivers/media/video/blackfin/ppi.c
deleted file mode 100644
index d29592186b02..000000000000
--- a/drivers/media/video/blackfin/ppi.c
+++ /dev/null
@@ -1,271 +0,0 @@
1/*
2 * ppi.c Analog Devices Parallel Peripheral Interface driver
3 *
4 * Copyright (c) 2011 Analog Devices Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#include <linux/slab.h>
21
22#include <asm/bfin_ppi.h>
23#include <asm/blackfin.h>
24#include <asm/cacheflush.h>
25#include <asm/dma.h>
26#include <asm/portmux.h>
27
28#include <media/blackfin/ppi.h>
29
30static int ppi_attach_irq(struct ppi_if *ppi, irq_handler_t handler);
31static void ppi_detach_irq(struct ppi_if *ppi);
32static int ppi_start(struct ppi_if *ppi);
33static int ppi_stop(struct ppi_if *ppi);
34static int ppi_set_params(struct ppi_if *ppi, struct ppi_params *params);
35static void ppi_update_addr(struct ppi_if *ppi, unsigned long addr);
36
37static const struct ppi_ops ppi_ops = {
38 .attach_irq = ppi_attach_irq,
39 .detach_irq = ppi_detach_irq,
40 .start = ppi_start,
41 .stop = ppi_stop,
42 .set_params = ppi_set_params,
43 .update_addr = ppi_update_addr,
44};
45
46static irqreturn_t ppi_irq_err(int irq, void *dev_id)
47{
48 struct ppi_if *ppi = dev_id;
49 const struct ppi_info *info = ppi->info;
50
51 switch (info->type) {
52 case PPI_TYPE_PPI:
53 {
54 struct bfin_ppi_regs *reg = info->base;
55 unsigned short status;
56
57 /* register on bf561 is cleared when read
58 * others are W1C
59 */
60 status = bfin_read16(&reg->status);
61 bfin_write16(&reg->status, 0xff00);
62 break;
63 }
64 case PPI_TYPE_EPPI:
65 {
66 struct bfin_eppi_regs *reg = info->base;
67 bfin_write16(&reg->status, 0xffff);
68 break;
69 }
70 default:
71 break;
72 }
73
74 return IRQ_HANDLED;
75}
76
77static int ppi_attach_irq(struct ppi_if *ppi, irq_handler_t handler)
78{
79 const struct ppi_info *info = ppi->info;
80 int ret;
81
82 ret = request_dma(info->dma_ch, "PPI_DMA");
83
84 if (ret) {
85 pr_err("Unable to allocate DMA channel for PPI\n");
86 return ret;
87 }
88 set_dma_callback(info->dma_ch, handler, ppi);
89
90 if (ppi->err_int) {
91 ret = request_irq(info->irq_err, ppi_irq_err, 0, "PPI ERROR", ppi);
92 if (ret) {
93 pr_err("Unable to allocate IRQ for PPI\n");
94 free_dma(info->dma_ch);
95 }
96 }
97 return ret;
98}
99
100static void ppi_detach_irq(struct ppi_if *ppi)
101{
102 const struct ppi_info *info = ppi->info;
103
104 if (ppi->err_int)
105 free_irq(info->irq_err, ppi);
106 free_dma(info->dma_ch);
107}
108
109static int ppi_start(struct ppi_if *ppi)
110{
111 const struct ppi_info *info = ppi->info;
112
113 /* enable DMA */
114 enable_dma(info->dma_ch);
115
116 /* enable PPI */
117 ppi->ppi_control |= PORT_EN;
118 switch (info->type) {
119 case PPI_TYPE_PPI:
120 {
121 struct bfin_ppi_regs *reg = info->base;
122 bfin_write16(&reg->control, ppi->ppi_control);
123 break;
124 }
125 case PPI_TYPE_EPPI:
126 {
127 struct bfin_eppi_regs *reg = info->base;
128 bfin_write32(&reg->control, ppi->ppi_control);
129 break;
130 }
131 default:
132 return -EINVAL;
133 }
134
135 SSYNC();
136 return 0;
137}
138
139static int ppi_stop(struct ppi_if *ppi)
140{
141 const struct ppi_info *info = ppi->info;
142
143 /* disable PPI */
144 ppi->ppi_control &= ~PORT_EN;
145 switch (info->type) {
146 case PPI_TYPE_PPI:
147 {
148 struct bfin_ppi_regs *reg = info->base;
149 bfin_write16(&reg->control, ppi->ppi_control);
150 break;
151 }
152 case PPI_TYPE_EPPI:
153 {
154 struct bfin_eppi_regs *reg = info->base;
155 bfin_write32(&reg->control, ppi->ppi_control);
156 break;
157 }
158 default:
159 return -EINVAL;
160 }
161
162 /* disable DMA */
163 clear_dma_irqstat(info->dma_ch);
164 disable_dma(info->dma_ch);
165
166 SSYNC();
167 return 0;
168}
169
170static int ppi_set_params(struct ppi_if *ppi, struct ppi_params *params)
171{
172 const struct ppi_info *info = ppi->info;
173 int dma32 = 0;
174 int dma_config, bytes_per_line, lines_per_frame;
175
176 bytes_per_line = params->width * params->bpp / 8;
177 lines_per_frame = params->height;
178 if (params->int_mask == 0xFFFFFFFF)
179 ppi->err_int = false;
180 else
181 ppi->err_int = true;
182
183 dma_config = (DMA_FLOW_STOP | WNR | RESTART | DMA2D | DI_EN);
184 ppi->ppi_control = params->ppi_control & ~PORT_EN;
185 switch (info->type) {
186 case PPI_TYPE_PPI:
187 {
188 struct bfin_ppi_regs *reg = info->base;
189
190 if (params->ppi_control & DMA32)
191 dma32 = 1;
192
193 bfin_write16(&reg->control, ppi->ppi_control);
194 bfin_write16(&reg->count, bytes_per_line - 1);
195 bfin_write16(&reg->frame, lines_per_frame);
196 break;
197 }
198 case PPI_TYPE_EPPI:
199 {
200 struct bfin_eppi_regs *reg = info->base;
201
202 if ((params->ppi_control & PACK_EN)
203 || (params->ppi_control & 0x38000) > DLEN_16)
204 dma32 = 1;
205
206 bfin_write32(&reg->control, ppi->ppi_control);
207 bfin_write16(&reg->line, bytes_per_line + params->blank_clocks);
208 bfin_write16(&reg->frame, lines_per_frame);
209 bfin_write16(&reg->hdelay, 0);
210 bfin_write16(&reg->vdelay, 0);
211 bfin_write16(&reg->hcount, bytes_per_line);
212 bfin_write16(&reg->vcount, lines_per_frame);
213 break;
214 }
215 default:
216 return -EINVAL;
217 }
218
219 if (dma32) {
220 dma_config |= WDSIZE_32;
221 set_dma_x_count(info->dma_ch, bytes_per_line >> 2);
222 set_dma_x_modify(info->dma_ch, 4);
223 set_dma_y_modify(info->dma_ch, 4);
224 } else {
225 dma_config |= WDSIZE_16;
226 set_dma_x_count(info->dma_ch, bytes_per_line >> 1);
227 set_dma_x_modify(info->dma_ch, 2);
228 set_dma_y_modify(info->dma_ch, 2);
229 }
230 set_dma_y_count(info->dma_ch, lines_per_frame);
231 set_dma_config(info->dma_ch, dma_config);
232
233 SSYNC();
234 return 0;
235}
236
237static void ppi_update_addr(struct ppi_if *ppi, unsigned long addr)
238{
239 set_dma_start_addr(ppi->info->dma_ch, addr);
240}
241
242struct ppi_if *ppi_create_instance(const struct ppi_info *info)
243{
244 struct ppi_if *ppi;
245
246 if (!info || !info->pin_req)
247 return NULL;
248
249 if (peripheral_request_list(info->pin_req, KBUILD_MODNAME)) {
250 pr_err("request peripheral failed\n");
251 return NULL;
252 }
253
254 ppi = kzalloc(sizeof(*ppi), GFP_KERNEL);
255 if (!ppi) {
256 peripheral_free_list(info->pin_req);
257 pr_err("unable to allocate memory for ppi handle\n");
258 return NULL;
259 }
260 ppi->ops = &ppi_ops;
261 ppi->info = info;
262
263 pr_info("ppi probe success\n");
264 return ppi;
265}
266
267void ppi_delete_instance(struct ppi_if *ppi)
268{
269 peripheral_free_list(ppi->info->pin_req);
270 kfree(ppi);
271}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 08:49:43 -0500