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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 16:31:16 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 15:43:09 -0400
commit2c3fb08b3f74b8792004095a1f6881a3296ff643 (patch)
tree19be9d09c4aa66d4363ee9d38a43721f5d6b144f /drivers/media/video/davinci/vpif_display.c
parent2a2d1cf46500ab7599d0b45ee837f3936763ccac (diff)
[media] rename drivers/media/video as .../platform
The remaining drivers are mostly platform drivers. Name the dir to reflect it. It makes sense to latter break it into a few other dirs. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/davinci/vpif_display.c')
-rw-r--r--drivers/media/video/davinci/vpif_display.c2010
1 files changed, 0 insertions, 2010 deletions
diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c
deleted file mode 100644
index 4a24848c1a66..000000000000
--- a/drivers/media/video/davinci/vpif_display.c
+++ /dev/null
@@ -1,2010 +0,0 @@
1/*
2 * vpif-display - VPIF display driver
3 * Display driver for TI DaVinci VPIF
4 *
5 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation version 2.
10 *
11 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
12 * kind, whether express or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/module.h>
20#include <linux/errno.h>
21#include <linux/fs.h>
22#include <linux/mm.h>
23#include <linux/interrupt.h>
24#include <linux/workqueue.h>
25#include <linux/string.h>
26#include <linux/videodev2.h>
27#include <linux/wait.h>
28#include <linux/time.h>
29#include <linux/i2c.h>
30#include <linux/platform_device.h>
31#include <linux/io.h>
32#include <linux/slab.h>
33
34#include <asm/irq.h>
35#include <asm/page.h>
36
37#include <media/adv7343.h>
38#include <media/v4l2-device.h>
39#include <media/v4l2-ioctl.h>
40#include <media/v4l2-chip-ident.h>
41
42#include "vpif_display.h"
43#include "vpif.h"
44
45MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
46MODULE_LICENSE("GPL");
47MODULE_VERSION(VPIF_DISPLAY_VERSION);
48
49#define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
50
51#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
52#define vpif_dbg(level, debug, fmt, arg...) \
53 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
54
55static int debug = 1;
56static u32 ch2_numbuffers = 3;
57static u32 ch3_numbuffers = 3;
58static u32 ch2_bufsize = 1920 * 1080 * 2;
59static u32 ch3_bufsize = 720 * 576 * 2;
60
61module_param(debug, int, 0644);
62module_param(ch2_numbuffers, uint, S_IRUGO);
63module_param(ch3_numbuffers, uint, S_IRUGO);
64module_param(ch2_bufsize, uint, S_IRUGO);
65module_param(ch3_bufsize, uint, S_IRUGO);
66
67MODULE_PARM_DESC(debug, "Debug level 0-1");
68MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)");
69MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)");
70MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)");
71MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)");
72
73static struct vpif_config_params config_params = {
74 .min_numbuffers = 3,
75 .numbuffers[0] = 3,
76 .numbuffers[1] = 3,
77 .min_bufsize[0] = 720 * 480 * 2,
78 .min_bufsize[1] = 720 * 480 * 2,
79 .channel_bufsize[0] = 1920 * 1080 * 2,
80 .channel_bufsize[1] = 720 * 576 * 2,
81};
82
83static struct vpif_device vpif_obj = { {NULL} };
84static struct device *vpif_dev;
85static void vpif_calculate_offsets(struct channel_obj *ch);
86static void vpif_config_addr(struct channel_obj *ch, int muxmode);
87
88/*
89 * buffer_prepare: This is the callback function called from vb2_qbuf()
90 * function the buffer is prepared and user space virtual address is converted
91 * into physical address
92 */
93static int vpif_buffer_prepare(struct vb2_buffer *vb)
94{
95 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
96 struct vb2_queue *q = vb->vb2_queue;
97 struct common_obj *common;
98 unsigned long addr;
99
100 common = &fh->channel->common[VPIF_VIDEO_INDEX];
101 if (vb->state != VB2_BUF_STATE_ACTIVE &&
102 vb->state != VB2_BUF_STATE_PREPARED) {
103 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
104 if (vb2_plane_vaddr(vb, 0) &&
105 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
106 goto buf_align_exit;
107
108 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
109 if (q->streaming &&
110 (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
111 if (!ISALIGNED(addr + common->ytop_off) ||
112 !ISALIGNED(addr + common->ybtm_off) ||
113 !ISALIGNED(addr + common->ctop_off) ||
114 !ISALIGNED(addr + common->cbtm_off))
115 goto buf_align_exit;
116 }
117 }
118 return 0;
119
120buf_align_exit:
121 vpif_err("buffer offset not aligned to 8 bytes\n");
122 return -EINVAL;
123}
124
125/*
126 * vpif_buffer_queue_setup: This function allocates memory for the buffers
127 */
128static int vpif_buffer_queue_setup(struct vb2_queue *vq,
129 const struct v4l2_format *fmt,
130 unsigned int *nbuffers, unsigned int *nplanes,
131 unsigned int sizes[], void *alloc_ctxs[])
132{
133 struct vpif_fh *fh = vb2_get_drv_priv(vq);
134 struct channel_obj *ch = fh->channel;
135 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
136 unsigned long size;
137
138 if (V4L2_MEMORY_MMAP == common->memory) {
139 size = config_params.channel_bufsize[ch->channel_id];
140 /*
141 * Checking if the buffer size exceeds the available buffer
142 * ycmux_mode = 0 means 1 channel mode HD and
143 * ycmux_mode = 1 means 2 channels mode SD
144 */
145 if (ch->vpifparams.std_info.ycmux_mode == 0) {
146 if (config_params.video_limit[ch->channel_id])
147 while (size * *nbuffers >
148 (config_params.video_limit[0]
149 + config_params.video_limit[1]))
150 (*nbuffers)--;
151 } else {
152 if (config_params.video_limit[ch->channel_id])
153 while (size * *nbuffers >
154 config_params.video_limit[ch->channel_id])
155 (*nbuffers)--;
156 }
157 } else {
158 size = common->fmt.fmt.pix.sizeimage;
159 }
160
161 if (*nbuffers < config_params.min_numbuffers)
162 *nbuffers = config_params.min_numbuffers;
163
164 *nplanes = 1;
165 sizes[0] = size;
166 alloc_ctxs[0] = common->alloc_ctx;
167 return 0;
168}
169
170/*
171 * vpif_buffer_queue: This function adds the buffer to DMA queue
172 */
173static void vpif_buffer_queue(struct vb2_buffer *vb)
174{
175 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
176 struct vpif_disp_buffer *buf = container_of(vb,
177 struct vpif_disp_buffer, vb);
178 struct channel_obj *ch = fh->channel;
179 struct common_obj *common;
180
181 common = &ch->common[VPIF_VIDEO_INDEX];
182
183 /* add the buffer to the DMA queue */
184 list_add_tail(&buf->list, &common->dma_queue);
185}
186
187/*
188 * vpif_buf_cleanup: This function is called from the videobuf2 layer to
189 * free memory allocated to the buffers
190 */
191static void vpif_buf_cleanup(struct vb2_buffer *vb)
192{
193 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
194 struct vpif_disp_buffer *buf = container_of(vb,
195 struct vpif_disp_buffer, vb);
196 struct channel_obj *ch = fh->channel;
197 struct common_obj *common;
198 unsigned long flags;
199
200 common = &ch->common[VPIF_VIDEO_INDEX];
201
202 spin_lock_irqsave(&common->irqlock, flags);
203 if (vb->state == VB2_BUF_STATE_ACTIVE)
204 list_del_init(&buf->list);
205 spin_unlock_irqrestore(&common->irqlock, flags);
206}
207
208static void vpif_wait_prepare(struct vb2_queue *vq)
209{
210 struct vpif_fh *fh = vb2_get_drv_priv(vq);
211 struct channel_obj *ch = fh->channel;
212 struct common_obj *common;
213
214 common = &ch->common[VPIF_VIDEO_INDEX];
215 mutex_unlock(&common->lock);
216}
217
218static void vpif_wait_finish(struct vb2_queue *vq)
219{
220 struct vpif_fh *fh = vb2_get_drv_priv(vq);
221 struct channel_obj *ch = fh->channel;
222 struct common_obj *common;
223
224 common = &ch->common[VPIF_VIDEO_INDEX];
225 mutex_lock(&common->lock);
226}
227
228static int vpif_buffer_init(struct vb2_buffer *vb)
229{
230 struct vpif_disp_buffer *buf = container_of(vb,
231 struct vpif_disp_buffer, vb);
232
233 INIT_LIST_HEAD(&buf->list);
234
235 return 0;
236}
237
238static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
239
240static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
241{
242 struct vpif_display_config *vpif_config_data =
243 vpif_dev->platform_data;
244 struct vpif_fh *fh = vb2_get_drv_priv(vq);
245 struct channel_obj *ch = fh->channel;
246 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
247 struct vpif_params *vpif = &ch->vpifparams;
248 unsigned long addr = 0;
249 int ret;
250
251 /* If buffer queue is empty, return error */
252 if (list_empty(&common->dma_queue)) {
253 vpif_err("buffer queue is empty\n");
254 return -EIO;
255 }
256
257 /* Get the next frame from the buffer queue */
258 common->next_frm = common->cur_frm =
259 list_entry(common->dma_queue.next,
260 struct vpif_disp_buffer, list);
261
262 list_del(&common->cur_frm->list);
263 /* Mark state of the current frame to active */
264 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
265
266 /* Initialize field_id and started member */
267 ch->field_id = 0;
268 common->started = 1;
269 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
270 /* Calculate the offset for Y and C data in the buffer */
271 vpif_calculate_offsets(ch);
272
273 if ((ch->vpifparams.std_info.frm_fmt &&
274 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
275 && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
276 || (!ch->vpifparams.std_info.frm_fmt
277 && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
278 vpif_err("conflict in field format and std format\n");
279 return -EINVAL;
280 }
281
282 /* clock settings */
283 ret =
284 vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
285 ch->vpifparams.std_info.hd_sd);
286 if (ret < 0) {
287 vpif_err("can't set clock\n");
288 return ret;
289 }
290
291 /* set the parameters and addresses */
292 ret = vpif_set_video_params(vpif, ch->channel_id + 2);
293 if (ret < 0)
294 return ret;
295
296 common->started = ret;
297 vpif_config_addr(ch, ret);
298 common->set_addr((addr + common->ytop_off),
299 (addr + common->ybtm_off),
300 (addr + common->ctop_off),
301 (addr + common->cbtm_off));
302
303 /* Set interrupt for both the fields in VPIF
304 Register enable channel in VPIF register */
305 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
306 channel2_intr_assert();
307 channel2_intr_enable(1);
308 enable_channel2(1);
309 if (vpif_config_data->ch2_clip_en)
310 channel2_clipping_enable(1);
311 }
312
313 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
314 || (common->started == 2)) {
315 channel3_intr_assert();
316 channel3_intr_enable(1);
317 enable_channel3(1);
318 if (vpif_config_data->ch3_clip_en)
319 channel3_clipping_enable(1);
320 }
321 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
322
323 return 0;
324}
325
326/* abort streaming and wait for last buffer */
327static int vpif_stop_streaming(struct vb2_queue *vq)
328{
329 struct vpif_fh *fh = vb2_get_drv_priv(vq);
330 struct channel_obj *ch = fh->channel;
331 struct common_obj *common;
332
333 if (!vb2_is_streaming(vq))
334 return 0;
335
336 common = &ch->common[VPIF_VIDEO_INDEX];
337
338 /* release all active buffers */
339 while (!list_empty(&common->dma_queue)) {
340 common->next_frm = list_entry(common->dma_queue.next,
341 struct vpif_disp_buffer, list);
342 list_del(&common->next_frm->list);
343 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
344 }
345
346 return 0;
347}
348
349static struct vb2_ops video_qops = {
350 .queue_setup = vpif_buffer_queue_setup,
351 .wait_prepare = vpif_wait_prepare,
352 .wait_finish = vpif_wait_finish,
353 .buf_init = vpif_buffer_init,
354 .buf_prepare = vpif_buffer_prepare,
355 .start_streaming = vpif_start_streaming,
356 .stop_streaming = vpif_stop_streaming,
357 .buf_cleanup = vpif_buf_cleanup,
358 .buf_queue = vpif_buffer_queue,
359};
360
361static void process_progressive_mode(struct common_obj *common)
362{
363 unsigned long addr = 0;
364
365 /* Get the next buffer from buffer queue */
366 common->next_frm = list_entry(common->dma_queue.next,
367 struct vpif_disp_buffer, list);
368 /* Remove that buffer from the buffer queue */
369 list_del(&common->next_frm->list);
370 /* Mark status of the buffer as active */
371 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
372
373 /* Set top and bottom field addrs in VPIF registers */
374 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
375 common->set_addr(addr + common->ytop_off,
376 addr + common->ybtm_off,
377 addr + common->ctop_off,
378 addr + common->cbtm_off);
379}
380
381static void process_interlaced_mode(int fid, struct common_obj *common)
382{
383 /* device field id and local field id are in sync */
384 /* If this is even field */
385 if (0 == fid) {
386 if (common->cur_frm == common->next_frm)
387 return;
388
389 /* one frame is displayed If next frame is
390 * available, release cur_frm and move on */
391 /* Copy frame display time */
392 do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp);
393 /* Change status of the cur_frm */
394 vb2_buffer_done(&common->cur_frm->vb,
395 VB2_BUF_STATE_DONE);
396 /* Make cur_frm pointing to next_frm */
397 common->cur_frm = common->next_frm;
398
399 } else if (1 == fid) { /* odd field */
400 if (list_empty(&common->dma_queue)
401 || (common->cur_frm != common->next_frm)) {
402 return;
403 }
404 /* one field is displayed configure the next
405 * frame if it is available else hold on current
406 * frame */
407 /* Get next from the buffer queue */
408 process_progressive_mode(common);
409
410 }
411}
412
413/*
414 * vpif_channel_isr: It changes status of the displayed buffer, takes next
415 * buffer from the queue and sets its address in VPIF registers
416 */
417static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
418{
419 struct vpif_device *dev = &vpif_obj;
420 struct channel_obj *ch;
421 struct common_obj *common;
422 enum v4l2_field field;
423 int fid = -1, i;
424 int channel_id = 0;
425
426 channel_id = *(int *)(dev_id);
427 if (!vpif_intr_status(channel_id + 2))
428 return IRQ_NONE;
429
430 ch = dev->dev[channel_id];
431 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
432 for (i = 0; i < VPIF_NUMOBJECTS; i++) {
433 common = &ch->common[i];
434 /* If streaming is started in this channel */
435 if (0 == common->started)
436 continue;
437
438 if (1 == ch->vpifparams.std_info.frm_fmt) {
439 if (list_empty(&common->dma_queue))
440 continue;
441
442 /* Progressive mode */
443 if (!channel_first_int[i][channel_id]) {
444 /* Mark status of the cur_frm to
445 * done and unlock semaphore on it */
446 do_gettimeofday(&common->cur_frm->vb.
447 v4l2_buf.timestamp);
448 vb2_buffer_done(&common->cur_frm->vb,
449 VB2_BUF_STATE_DONE);
450 /* Make cur_frm pointing to next_frm */
451 common->cur_frm = common->next_frm;
452 }
453
454 channel_first_int[i][channel_id] = 0;
455 process_progressive_mode(common);
456 } else {
457 /* Interlaced mode */
458 /* If it is first interrupt, ignore it */
459
460 if (channel_first_int[i][channel_id]) {
461 channel_first_int[i][channel_id] = 0;
462 continue;
463 }
464
465 if (0 == i) {
466 ch->field_id ^= 1;
467 /* Get field id from VPIF registers */
468 fid = vpif_channel_getfid(ch->channel_id + 2);
469 /* If fid does not match with stored field id */
470 if (fid != ch->field_id) {
471 /* Make them in sync */
472 if (0 == fid)
473 ch->field_id = fid;
474
475 return IRQ_HANDLED;
476 }
477 }
478 process_interlaced_mode(fid, common);
479 }
480 }
481
482 return IRQ_HANDLED;
483}
484
485static int vpif_update_std_info(struct channel_obj *ch)
486{
487 struct video_obj *vid_ch = &ch->video;
488 struct vpif_params *vpifparams = &ch->vpifparams;
489 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
490 const struct vpif_channel_config_params *config;
491
492 int i;
493
494 for (i = 0; i < vpif_ch_params_count; i++) {
495 config = &ch_params[i];
496 if (config->hd_sd == 0) {
497 vpif_dbg(2, debug, "SD format\n");
498 if (config->stdid & vid_ch->stdid) {
499 memcpy(std_info, config, sizeof(*config));
500 break;
501 }
502 } else {
503 vpif_dbg(2, debug, "HD format\n");
504 if (config->dv_preset == vid_ch->dv_preset) {
505 memcpy(std_info, config, sizeof(*config));
506 break;
507 }
508 }
509 }
510
511 if (i == vpif_ch_params_count) {
512 vpif_dbg(1, debug, "Format not found\n");
513 return -EINVAL;
514 }
515
516 return 0;
517}
518
519static int vpif_update_resolution(struct channel_obj *ch)
520{
521 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
522 struct video_obj *vid_ch = &ch->video;
523 struct vpif_params *vpifparams = &ch->vpifparams;
524 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
525
526 if (!vid_ch->stdid && !vid_ch->dv_preset && !vid_ch->bt_timings.height)
527 return -EINVAL;
528
529 if (vid_ch->stdid || vid_ch->dv_preset) {
530 if (vpif_update_std_info(ch))
531 return -EINVAL;
532 }
533
534 common->fmt.fmt.pix.width = std_info->width;
535 common->fmt.fmt.pix.height = std_info->height;
536 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
537 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
538
539 /* Set height and width paramateres */
540 common->height = std_info->height;
541 common->width = std_info->width;
542
543 return 0;
544}
545
546/*
547 * vpif_calculate_offsets: This function calculates buffers offset for Y and C
548 * in the top and bottom field
549 */
550static void vpif_calculate_offsets(struct channel_obj *ch)
551{
552 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
553 struct vpif_params *vpifparams = &ch->vpifparams;
554 enum v4l2_field field = common->fmt.fmt.pix.field;
555 struct video_obj *vid_ch = &ch->video;
556 unsigned int hpitch, vpitch, sizeimage;
557
558 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
559 if (ch->vpifparams.std_info.frm_fmt)
560 vid_ch->buf_field = V4L2_FIELD_NONE;
561 else
562 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
563 } else {
564 vid_ch->buf_field = common->fmt.fmt.pix.field;
565 }
566
567 sizeimage = common->fmt.fmt.pix.sizeimage;
568
569 hpitch = common->fmt.fmt.pix.bytesperline;
570 vpitch = sizeimage / (hpitch * 2);
571 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
572 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
573 common->ytop_off = 0;
574 common->ybtm_off = hpitch;
575 common->ctop_off = sizeimage / 2;
576 common->cbtm_off = sizeimage / 2 + hpitch;
577 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
578 common->ytop_off = 0;
579 common->ybtm_off = sizeimage / 4;
580 common->ctop_off = sizeimage / 2;
581 common->cbtm_off = common->ctop_off + sizeimage / 4;
582 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
583 common->ybtm_off = 0;
584 common->ytop_off = sizeimage / 4;
585 common->cbtm_off = sizeimage / 2;
586 common->ctop_off = common->cbtm_off + sizeimage / 4;
587 }
588
589 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
590 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
591 vpifparams->video_params.storage_mode = 1;
592 } else {
593 vpifparams->video_params.storage_mode = 0;
594 }
595
596 if (ch->vpifparams.std_info.frm_fmt == 1) {
597 vpifparams->video_params.hpitch =
598 common->fmt.fmt.pix.bytesperline;
599 } else {
600 if ((field == V4L2_FIELD_ANY) ||
601 (field == V4L2_FIELD_INTERLACED))
602 vpifparams->video_params.hpitch =
603 common->fmt.fmt.pix.bytesperline * 2;
604 else
605 vpifparams->video_params.hpitch =
606 common->fmt.fmt.pix.bytesperline;
607 }
608
609 ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
610}
611
612static void vpif_config_format(struct channel_obj *ch)
613{
614 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
615
616 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
617 if (config_params.numbuffers[ch->channel_id] == 0)
618 common->memory = V4L2_MEMORY_USERPTR;
619 else
620 common->memory = V4L2_MEMORY_MMAP;
621
622 common->fmt.fmt.pix.sizeimage =
623 config_params.channel_bufsize[ch->channel_id];
624 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
625 common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
626}
627
628static int vpif_check_format(struct channel_obj *ch,
629 struct v4l2_pix_format *pixfmt)
630{
631 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
632 enum v4l2_field field = pixfmt->field;
633 u32 sizeimage, hpitch, vpitch;
634
635 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
636 goto invalid_fmt_exit;
637
638 if (!(VPIF_VALID_FIELD(field)))
639 goto invalid_fmt_exit;
640
641 if (pixfmt->bytesperline <= 0)
642 goto invalid_pitch_exit;
643
644 sizeimage = pixfmt->sizeimage;
645
646 if (vpif_update_resolution(ch))
647 return -EINVAL;
648
649 hpitch = pixfmt->bytesperline;
650 vpitch = sizeimage / (hpitch * 2);
651
652 /* Check for valid value of pitch */
653 if ((hpitch < ch->vpifparams.std_info.width) ||
654 (vpitch < ch->vpifparams.std_info.height))
655 goto invalid_pitch_exit;
656
657 /* Check for 8 byte alignment */
658 if (!ISALIGNED(hpitch)) {
659 vpif_err("invalid pitch alignment\n");
660 return -EINVAL;
661 }
662 pixfmt->width = common->fmt.fmt.pix.width;
663 pixfmt->height = common->fmt.fmt.pix.height;
664
665 return 0;
666
667invalid_fmt_exit:
668 vpif_err("invalid field format\n");
669 return -EINVAL;
670
671invalid_pitch_exit:
672 vpif_err("invalid pitch\n");
673 return -EINVAL;
674}
675
676static void vpif_config_addr(struct channel_obj *ch, int muxmode)
677{
678 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
679
680 if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
681 common->set_addr = ch3_set_videobuf_addr;
682 } else {
683 if (2 == muxmode)
684 common->set_addr = ch2_set_videobuf_addr_yc_nmux;
685 else
686 common->set_addr = ch2_set_videobuf_addr;
687 }
688}
689
690/*
691 * vpif_mmap: It is used to map kernel space buffers into user spaces
692 */
693static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
694{
695 struct vpif_fh *fh = filep->private_data;
696 struct channel_obj *ch = fh->channel;
697 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
698 int ret;
699
700 vpif_dbg(2, debug, "vpif_mmap\n");
701
702 if (mutex_lock_interruptible(&common->lock))
703 return -ERESTARTSYS;
704 ret = vb2_mmap(&common->buffer_queue, vma);
705 mutex_unlock(&common->lock);
706 return ret;
707}
708
709/*
710 * vpif_poll: It is used for select/poll system call
711 */
712static unsigned int vpif_poll(struct file *filep, poll_table *wait)
713{
714 struct vpif_fh *fh = filep->private_data;
715 struct channel_obj *ch = fh->channel;
716 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
717 unsigned int res = 0;
718
719 if (common->started) {
720 mutex_lock(&common->lock);
721 res = vb2_poll(&common->buffer_queue, filep, wait);
722 mutex_unlock(&common->lock);
723 }
724
725 return res;
726}
727
728/*
729 * vpif_open: It creates object of file handle structure and stores it in
730 * private_data member of filepointer
731 */
732static int vpif_open(struct file *filep)
733{
734 struct video_device *vdev = video_devdata(filep);
735 struct channel_obj *ch = video_get_drvdata(vdev);
736 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
737 struct vpif_fh *fh;
738
739 /* Allocate memory for the file handle object */
740 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
741 if (fh == NULL) {
742 vpif_err("unable to allocate memory for file handle object\n");
743 return -ENOMEM;
744 }
745
746 if (mutex_lock_interruptible(&common->lock)) {
747 kfree(fh);
748 return -ERESTARTSYS;
749 }
750 /* store pointer to fh in private_data member of filep */
751 filep->private_data = fh;
752 fh->channel = ch;
753 fh->initialized = 0;
754 if (!ch->initialized) {
755 fh->initialized = 1;
756 ch->initialized = 1;
757 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
758 }
759
760 /* Increment channel usrs counter */
761 atomic_inc(&ch->usrs);
762 /* Set io_allowed[VPIF_VIDEO_INDEX] member to false */
763 fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
764 /* Initialize priority of this instance to default priority */
765 fh->prio = V4L2_PRIORITY_UNSET;
766 v4l2_prio_open(&ch->prio, &fh->prio);
767 mutex_unlock(&common->lock);
768
769 return 0;
770}
771
772/*
773 * vpif_release: This function deletes buffer queue, frees the buffers and
774 * the vpif file handle
775 */
776static int vpif_release(struct file *filep)
777{
778 struct vpif_fh *fh = filep->private_data;
779 struct channel_obj *ch = fh->channel;
780 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
781
782 mutex_lock(&common->lock);
783 /* if this instance is doing IO */
784 if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
785 /* Reset io_usrs member of channel object */
786 common->io_usrs = 0;
787 /* Disable channel */
788 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
789 enable_channel2(0);
790 channel2_intr_enable(0);
791 }
792 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
793 (2 == common->started)) {
794 enable_channel3(0);
795 channel3_intr_enable(0);
796 }
797 common->started = 0;
798
799 /* Free buffers allocated */
800 vb2_queue_release(&common->buffer_queue);
801 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
802
803 common->numbuffers =
804 config_params.numbuffers[ch->channel_id];
805 }
806
807 /* Decrement channel usrs counter */
808 atomic_dec(&ch->usrs);
809 /* If this file handle has initialize encoder device, reset it */
810 if (fh->initialized)
811 ch->initialized = 0;
812
813 /* Close the priority */
814 v4l2_prio_close(&ch->prio, fh->prio);
815 filep->private_data = NULL;
816 fh->initialized = 0;
817 mutex_unlock(&common->lock);
818 kfree(fh);
819
820 return 0;
821}
822
823/* functions implementing ioctls */
824/**
825 * vpif_querycap() - QUERYCAP handler
826 * @file: file ptr
827 * @priv: file handle
828 * @cap: ptr to v4l2_capability structure
829 */
830static int vpif_querycap(struct file *file, void *priv,
831 struct v4l2_capability *cap)
832{
833 struct vpif_display_config *config = vpif_dev->platform_data;
834
835 cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
836 strlcpy(cap->driver, "vpif display", sizeof(cap->driver));
837 strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info));
838 strlcpy(cap->card, config->card_name, sizeof(cap->card));
839
840 return 0;
841}
842
843static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
844 struct v4l2_fmtdesc *fmt)
845{
846 if (fmt->index != 0) {
847 vpif_err("Invalid format index\n");
848 return -EINVAL;
849 }
850
851 /* Fill in the information about format */
852 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
853 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
854 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
855
856 return 0;
857}
858
859static int vpif_g_fmt_vid_out(struct file *file, void *priv,
860 struct v4l2_format *fmt)
861{
862 struct vpif_fh *fh = priv;
863 struct channel_obj *ch = fh->channel;
864 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
865
866 /* Check the validity of the buffer type */
867 if (common->fmt.type != fmt->type)
868 return -EINVAL;
869
870 if (vpif_update_resolution(ch))
871 return -EINVAL;
872 *fmt = common->fmt;
873 return 0;
874}
875
876static int vpif_s_fmt_vid_out(struct file *file, void *priv,
877 struct v4l2_format *fmt)
878{
879 struct vpif_fh *fh = priv;
880 struct v4l2_pix_format *pixfmt;
881 struct channel_obj *ch = fh->channel;
882 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
883 int ret = 0;
884
885 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
886 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
887 if (!fh->initialized) {
888 vpif_dbg(1, debug, "Channel Busy\n");
889 return -EBUSY;
890 }
891
892 /* Check for the priority */
893 ret = v4l2_prio_check(&ch->prio, fh->prio);
894 if (0 != ret)
895 return ret;
896 fh->initialized = 1;
897 }
898
899 if (common->started) {
900 vpif_dbg(1, debug, "Streaming in progress\n");
901 return -EBUSY;
902 }
903
904 pixfmt = &fmt->fmt.pix;
905 /* Check for valid field format */
906 ret = vpif_check_format(ch, pixfmt);
907 if (ret)
908 return ret;
909
910 /* store the pix format in the channel object */
911 common->fmt.fmt.pix = *pixfmt;
912 /* store the format in the channel object */
913 common->fmt = *fmt;
914 return 0;
915}
916
917static int vpif_try_fmt_vid_out(struct file *file, void *priv,
918 struct v4l2_format *fmt)
919{
920 struct vpif_fh *fh = priv;
921 struct channel_obj *ch = fh->channel;
922 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
923 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
924 int ret = 0;
925
926 ret = vpif_check_format(ch, pixfmt);
927 if (ret) {
928 *pixfmt = common->fmt.fmt.pix;
929 pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2;
930 }
931
932 return ret;
933}
934
935static int vpif_reqbufs(struct file *file, void *priv,
936 struct v4l2_requestbuffers *reqbuf)
937{
938 struct vpif_fh *fh = priv;
939 struct channel_obj *ch = fh->channel;
940 struct common_obj *common;
941 enum v4l2_field field;
942 struct vb2_queue *q;
943 u8 index = 0;
944
945 /* This file handle has not initialized the channel,
946 It is not allowed to do settings */
947 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
948 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
949 if (!fh->initialized) {
950 vpif_err("Channel Busy\n");
951 return -EBUSY;
952 }
953 }
954
955 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)
956 return -EINVAL;
957
958 index = VPIF_VIDEO_INDEX;
959
960 common = &ch->common[index];
961
962 if (common->fmt.type != reqbuf->type || !vpif_dev)
963 return -EINVAL;
964 if (0 != common->io_usrs)
965 return -EBUSY;
966
967 if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
968 if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY)
969 field = V4L2_FIELD_INTERLACED;
970 else
971 field = common->fmt.fmt.pix.field;
972 } else {
973 field = V4L2_VBI_INTERLACED;
974 }
975 /* Initialize videobuf2 queue as per the buffer type */
976 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
977 if (!common->alloc_ctx) {
978 vpif_err("Failed to get the context\n");
979 return -EINVAL;
980 }
981 q = &common->buffer_queue;
982 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
983 q->io_modes = VB2_MMAP | VB2_USERPTR;
984 q->drv_priv = fh;
985 q->ops = &video_qops;
986 q->mem_ops = &vb2_dma_contig_memops;
987 q->buf_struct_size = sizeof(struct vpif_disp_buffer);
988
989 vb2_queue_init(q);
990
991 /* Set io allowed member of file handle to TRUE */
992 fh->io_allowed[index] = 1;
993 /* Increment io usrs member of channel object to 1 */
994 common->io_usrs = 1;
995 /* Store type of memory requested in channel object */
996 common->memory = reqbuf->memory;
997 INIT_LIST_HEAD(&common->dma_queue);
998 /* Allocate buffers */
999 return vb2_reqbufs(&common->buffer_queue, reqbuf);
1000}
1001
1002static int vpif_querybuf(struct file *file, void *priv,
1003 struct v4l2_buffer *tbuf)
1004{
1005 struct vpif_fh *fh = priv;
1006 struct channel_obj *ch = fh->channel;
1007 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1008
1009 if (common->fmt.type != tbuf->type)
1010 return -EINVAL;
1011
1012 return vb2_querybuf(&common->buffer_queue, tbuf);
1013}
1014
1015static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1016{
1017 struct vpif_fh *fh = NULL;
1018 struct channel_obj *ch = NULL;
1019 struct common_obj *common = NULL;
1020
1021 if (!buf || !priv)
1022 return -EINVAL;
1023
1024 fh = priv;
1025 ch = fh->channel;
1026 if (!ch)
1027 return -EINVAL;
1028
1029 common = &(ch->common[VPIF_VIDEO_INDEX]);
1030 if (common->fmt.type != buf->type)
1031 return -EINVAL;
1032
1033 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1034 vpif_err("fh->io_allowed\n");
1035 return -EACCES;
1036 }
1037
1038 return vb2_qbuf(&common->buffer_queue, buf);
1039}
1040
1041static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1042{
1043 struct vpif_fh *fh = priv;
1044 struct channel_obj *ch = fh->channel;
1045 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1046 int ret = 0;
1047
1048 if (!(*std_id & VPIF_V4L2_STD))
1049 return -EINVAL;
1050
1051 if (common->started) {
1052 vpif_err("streaming in progress\n");
1053 return -EBUSY;
1054 }
1055
1056 /* Call encoder subdevice function to set the standard */
1057 ch->video.stdid = *std_id;
1058 ch->video.dv_preset = V4L2_DV_INVALID;
1059 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
1060
1061 /* Get the information about the standard */
1062 if (vpif_update_resolution(ch))
1063 return -EINVAL;
1064
1065 if ((ch->vpifparams.std_info.width *
1066 ch->vpifparams.std_info.height * 2) >
1067 config_params.channel_bufsize[ch->channel_id]) {
1068 vpif_err("invalid std for this size\n");
1069 return -EINVAL;
1070 }
1071
1072 common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
1073 /* Configure the default format information */
1074 vpif_config_format(ch);
1075
1076 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1077 s_std_output, *std_id);
1078 if (ret < 0) {
1079 vpif_err("Failed to set output standard\n");
1080 return ret;
1081 }
1082
1083 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core,
1084 s_std, *std_id);
1085 if (ret < 0)
1086 vpif_err("Failed to set standard for sub devices\n");
1087 return ret;
1088}
1089
1090static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1091{
1092 struct vpif_fh *fh = priv;
1093 struct channel_obj *ch = fh->channel;
1094
1095 *std = ch->video.stdid;
1096 return 0;
1097}
1098
1099static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1100{
1101 struct vpif_fh *fh = priv;
1102 struct channel_obj *ch = fh->channel;
1103 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1104
1105 return vb2_dqbuf(&common->buffer_queue, p,
1106 (file->f_flags & O_NONBLOCK));
1107}
1108
1109static int vpif_streamon(struct file *file, void *priv,
1110 enum v4l2_buf_type buftype)
1111{
1112 struct vpif_fh *fh = priv;
1113 struct channel_obj *ch = fh->channel;
1114 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1115 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1116 int ret = 0;
1117
1118 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1119 vpif_err("buffer type not supported\n");
1120 return -EINVAL;
1121 }
1122
1123 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1124 vpif_err("fh->io_allowed\n");
1125 return -EACCES;
1126 }
1127
1128 /* If Streaming is already started, return error */
1129 if (common->started) {
1130 vpif_err("channel->started\n");
1131 return -EBUSY;
1132 }
1133
1134 if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
1135 && oth_ch->common[VPIF_VIDEO_INDEX].started &&
1136 ch->vpifparams.std_info.ycmux_mode == 0)
1137 || ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
1138 && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1139 vpif_err("other channel is using\n");
1140 return -EBUSY;
1141 }
1142
1143 ret = vpif_check_format(ch, &common->fmt.fmt.pix);
1144 if (ret < 0)
1145 return ret;
1146
1147 /* Call vb2_streamon to start streaming in videobuf2 */
1148 ret = vb2_streamon(&common->buffer_queue, buftype);
1149 if (ret < 0) {
1150 vpif_err("vb2_streamon\n");
1151 return ret;
1152 }
1153
1154 return ret;
1155}
1156
1157static int vpif_streamoff(struct file *file, void *priv,
1158 enum v4l2_buf_type buftype)
1159{
1160 struct vpif_fh *fh = priv;
1161 struct channel_obj *ch = fh->channel;
1162 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1163 struct vpif_display_config *vpif_config_data =
1164 vpif_dev->platform_data;
1165
1166 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1167 vpif_err("buffer type not supported\n");
1168 return -EINVAL;
1169 }
1170
1171 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1172 vpif_err("fh->io_allowed\n");
1173 return -EACCES;
1174 }
1175
1176 if (!common->started) {
1177 vpif_err("channel->started\n");
1178 return -EINVAL;
1179 }
1180
1181 if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1182 /* disable channel */
1183 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
1184 if (vpif_config_data->ch2_clip_en)
1185 channel2_clipping_enable(0);
1186 enable_channel2(0);
1187 channel2_intr_enable(0);
1188 }
1189 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
1190 (2 == common->started)) {
1191 if (vpif_config_data->ch3_clip_en)
1192 channel3_clipping_enable(0);
1193 enable_channel3(0);
1194 channel3_intr_enable(0);
1195 }
1196 }
1197
1198 common->started = 0;
1199 return vb2_streamoff(&common->buffer_queue, buftype);
1200}
1201
1202static int vpif_cropcap(struct file *file, void *priv,
1203 struct v4l2_cropcap *crop)
1204{
1205 struct vpif_fh *fh = priv;
1206 struct channel_obj *ch = fh->channel;
1207 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1208 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type)
1209 return -EINVAL;
1210
1211 crop->bounds.left = crop->bounds.top = 0;
1212 crop->defrect.left = crop->defrect.top = 0;
1213 crop->defrect.height = crop->bounds.height = common->height;
1214 crop->defrect.width = crop->bounds.width = common->width;
1215
1216 return 0;
1217}
1218
1219static int vpif_enum_output(struct file *file, void *fh,
1220 struct v4l2_output *output)
1221{
1222
1223 struct vpif_display_config *config = vpif_dev->platform_data;
1224
1225 if (output->index >= config->output_count) {
1226 vpif_dbg(1, debug, "Invalid output index\n");
1227 return -EINVAL;
1228 }
1229
1230 strcpy(output->name, config->output[output->index]);
1231 output->type = V4L2_OUTPUT_TYPE_ANALOG;
1232 output->std = VPIF_V4L2_STD;
1233
1234 return 0;
1235}
1236
1237static int vpif_s_output(struct file *file, void *priv, unsigned int i)
1238{
1239 struct vpif_fh *fh = priv;
1240 struct channel_obj *ch = fh->channel;
1241 struct video_obj *vid_ch = &ch->video;
1242 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1243 int ret = 0;
1244
1245 if (common->started) {
1246 vpif_err("Streaming in progress\n");
1247 return -EBUSY;
1248 }
1249
1250 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1251 s_routing, 0, i, 0);
1252
1253 if (ret < 0)
1254 vpif_err("Failed to set output standard\n");
1255
1256 vid_ch->output_id = i;
1257 return ret;
1258}
1259
1260static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
1261{
1262 struct vpif_fh *fh = priv;
1263 struct channel_obj *ch = fh->channel;
1264 struct video_obj *vid_ch = &ch->video;
1265
1266 *i = vid_ch->output_id;
1267
1268 return 0;
1269}
1270
1271static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
1272{
1273 struct vpif_fh *fh = priv;
1274 struct channel_obj *ch = fh->channel;
1275
1276 *p = v4l2_prio_max(&ch->prio);
1277
1278 return 0;
1279}
1280
1281static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1282{
1283 struct vpif_fh *fh = priv;
1284 struct channel_obj *ch = fh->channel;
1285
1286 return v4l2_prio_change(&ch->prio, &fh->prio, p);
1287}
1288
1289/**
1290 * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler
1291 * @file: file ptr
1292 * @priv: file handle
1293 * @preset: input preset
1294 */
1295static int vpif_enum_dv_presets(struct file *file, void *priv,
1296 struct v4l2_dv_enum_preset *preset)
1297{
1298 struct vpif_fh *fh = priv;
1299 struct channel_obj *ch = fh->channel;
1300 struct video_obj *vid_ch = &ch->video;
1301
1302 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1303 video, enum_dv_presets, preset);
1304}
1305
1306/**
1307 * vpif_s_dv_presets() - S_DV_PRESETS handler
1308 * @file: file ptr
1309 * @priv: file handle
1310 * @preset: input preset
1311 */
1312static int vpif_s_dv_preset(struct file *file, void *priv,
1313 struct v4l2_dv_preset *preset)
1314{
1315 struct vpif_fh *fh = priv;
1316 struct channel_obj *ch = fh->channel;
1317 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1318 struct video_obj *vid_ch = &ch->video;
1319 int ret = 0;
1320
1321 if (common->started) {
1322 vpif_dbg(1, debug, "streaming in progress\n");
1323 return -EBUSY;
1324 }
1325
1326 ret = v4l2_prio_check(&ch->prio, fh->prio);
1327 if (ret != 0)
1328 return ret;
1329
1330 fh->initialized = 1;
1331
1332 /* Call encoder subdevice function to set the standard */
1333 if (mutex_lock_interruptible(&common->lock))
1334 return -ERESTARTSYS;
1335
1336 ch->video.dv_preset = preset->preset;
1337 ch->video.stdid = V4L2_STD_UNKNOWN;
1338 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
1339
1340 /* Get the information about the standard */
1341 if (vpif_update_resolution(ch)) {
1342 ret = -EINVAL;
1343 } else {
1344 /* Configure the default format information */
1345 vpif_config_format(ch);
1346
1347 ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1348 video, s_dv_preset, preset);
1349 }
1350
1351 mutex_unlock(&common->lock);
1352
1353 return ret;
1354}
1355/**
1356 * vpif_g_dv_presets() - G_DV_PRESETS handler
1357 * @file: file ptr
1358 * @priv: file handle
1359 * @preset: input preset
1360 */
1361static int vpif_g_dv_preset(struct file *file, void *priv,
1362 struct v4l2_dv_preset *preset)
1363{
1364 struct vpif_fh *fh = priv;
1365 struct channel_obj *ch = fh->channel;
1366
1367 preset->preset = ch->video.dv_preset;
1368
1369 return 0;
1370}
1371/**
1372 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1373 * @file: file ptr
1374 * @priv: file handle
1375 * @timings: digital video timings
1376 */
1377static int vpif_s_dv_timings(struct file *file, void *priv,
1378 struct v4l2_dv_timings *timings)
1379{
1380 struct vpif_fh *fh = priv;
1381 struct channel_obj *ch = fh->channel;
1382 struct vpif_params *vpifparams = &ch->vpifparams;
1383 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1384 struct video_obj *vid_ch = &ch->video;
1385 struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
1386 int ret;
1387
1388 if (timings->type != V4L2_DV_BT_656_1120) {
1389 vpif_dbg(2, debug, "Timing type not defined\n");
1390 return -EINVAL;
1391 }
1392
1393 /* Configure subdevice timings, if any */
1394 ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1395 video, s_dv_timings, timings);
1396 if (ret == -ENOIOCTLCMD) {
1397 vpif_dbg(2, debug, "Custom DV timings not supported by "
1398 "subdevice\n");
1399 return -EINVAL;
1400 }
1401 if (ret < 0) {
1402 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1403 return ret;
1404 }
1405
1406 if (!(timings->bt.width && timings->bt.height &&
1407 (timings->bt.hbackporch ||
1408 timings->bt.hfrontporch ||
1409 timings->bt.hsync) &&
1410 timings->bt.vfrontporch &&
1411 (timings->bt.vbackporch ||
1412 timings->bt.vsync))) {
1413 vpif_dbg(2, debug, "Timings for width, height, "
1414 "horizontal back porch, horizontal sync, "
1415 "horizontal front porch, vertical back porch, "
1416 "vertical sync and vertical back porch "
1417 "must be defined\n");
1418 return -EINVAL;
1419 }
1420
1421 *bt = timings->bt;
1422
1423 /* Configure video port timings */
1424
1425 std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
1426 bt->hsync - 8;
1427 std_info->sav2eav = bt->width;
1428
1429 std_info->l1 = 1;
1430 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1431
1432 if (bt->interlaced) {
1433 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1434 std_info->vsize = bt->height * 2 +
1435 bt->vfrontporch + bt->vsync + bt->vbackporch +
1436 bt->il_vfrontporch + bt->il_vsync +
1437 bt->il_vbackporch;
1438 std_info->l5 = std_info->vsize/2 -
1439 (bt->vfrontporch - 1);
1440 std_info->l7 = std_info->vsize/2 + 1;
1441 std_info->l9 = std_info->l7 + bt->il_vsync +
1442 bt->il_vbackporch + 1;
1443 std_info->l11 = std_info->vsize -
1444 (bt->il_vfrontporch - 1);
1445 } else {
1446 vpif_dbg(2, debug, "Required timing values for "
1447 "interlaced BT format missing\n");
1448 return -EINVAL;
1449 }
1450 } else {
1451 std_info->vsize = bt->height + bt->vfrontporch +
1452 bt->vsync + bt->vbackporch;
1453 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1454 }
1455 strncpy(std_info->name, "Custom timings BT656/1120",
1456 VPIF_MAX_NAME);
1457 std_info->width = bt->width;
1458 std_info->height = bt->height;
1459 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1460 std_info->ycmux_mode = 0;
1461 std_info->capture_format = 0;
1462 std_info->vbi_supported = 0;
1463 std_info->hd_sd = 1;
1464 std_info->stdid = 0;
1465 std_info->dv_preset = V4L2_DV_INVALID;
1466
1467 vid_ch->stdid = 0;
1468 vid_ch->dv_preset = V4L2_DV_INVALID;
1469
1470 return 0;
1471}
1472
1473/**
1474 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1475 * @file: file ptr
1476 * @priv: file handle
1477 * @timings: digital video timings
1478 */
1479static int vpif_g_dv_timings(struct file *file, void *priv,
1480 struct v4l2_dv_timings *timings)
1481{
1482 struct vpif_fh *fh = priv;
1483 struct channel_obj *ch = fh->channel;
1484 struct video_obj *vid_ch = &ch->video;
1485 struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
1486
1487 timings->bt = *bt;
1488
1489 return 0;
1490}
1491
1492/*
1493 * vpif_g_chip_ident() - Identify the chip
1494 * @file: file ptr
1495 * @priv: file handle
1496 * @chip: chip identity
1497 *
1498 * Returns zero or -EINVAL if read operations fails.
1499 */
1500static int vpif_g_chip_ident(struct file *file, void *priv,
1501 struct v4l2_dbg_chip_ident *chip)
1502{
1503 chip->ident = V4L2_IDENT_NONE;
1504 chip->revision = 0;
1505 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1506 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1507 vpif_dbg(2, debug, "match_type is invalid.\n");
1508 return -EINVAL;
1509 }
1510
1511 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1512 g_chip_ident, chip);
1513}
1514
1515#ifdef CONFIG_VIDEO_ADV_DEBUG
1516/*
1517 * vpif_dbg_g_register() - Read register
1518 * @file: file ptr
1519 * @priv: file handle
1520 * @reg: register to be read
1521 *
1522 * Debugging only
1523 * Returns zero or -EINVAL if read operations fails.
1524 */
1525static int vpif_dbg_g_register(struct file *file, void *priv,
1526 struct v4l2_dbg_register *reg){
1527 struct vpif_fh *fh = priv;
1528 struct channel_obj *ch = fh->channel;
1529 struct video_obj *vid_ch = &ch->video;
1530
1531 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core,
1532 g_register, reg);
1533}
1534
1535/*
1536 * vpif_dbg_s_register() - Write to register
1537 * @file: file ptr
1538 * @priv: file handle
1539 * @reg: register to be modified
1540 *
1541 * Debugging only
1542 * Returns zero or -EINVAL if write operations fails.
1543 */
1544static int vpif_dbg_s_register(struct file *file, void *priv,
1545 struct v4l2_dbg_register *reg){
1546 struct vpif_fh *fh = priv;
1547 struct channel_obj *ch = fh->channel;
1548 struct video_obj *vid_ch = &ch->video;
1549
1550 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core,
1551 s_register, reg);
1552}
1553#endif
1554
1555/*
1556 * vpif_log_status() - Status information
1557 * @file: file ptr
1558 * @priv: file handle
1559 *
1560 * Returns zero.
1561 */
1562static int vpif_log_status(struct file *filep, void *priv)
1563{
1564 /* status for sub devices */
1565 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1566
1567 return 0;
1568}
1569
1570/* vpif display ioctl operations */
1571static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1572 .vidioc_querycap = vpif_querycap,
1573 .vidioc_g_priority = vpif_g_priority,
1574 .vidioc_s_priority = vpif_s_priority,
1575 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1576 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1577 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1578 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1579 .vidioc_reqbufs = vpif_reqbufs,
1580 .vidioc_querybuf = vpif_querybuf,
1581 .vidioc_qbuf = vpif_qbuf,
1582 .vidioc_dqbuf = vpif_dqbuf,
1583 .vidioc_streamon = vpif_streamon,
1584 .vidioc_streamoff = vpif_streamoff,
1585 .vidioc_s_std = vpif_s_std,
1586 .vidioc_g_std = vpif_g_std,
1587 .vidioc_enum_output = vpif_enum_output,
1588 .vidioc_s_output = vpif_s_output,
1589 .vidioc_g_output = vpif_g_output,
1590 .vidioc_cropcap = vpif_cropcap,
1591 .vidioc_enum_dv_presets = vpif_enum_dv_presets,
1592 .vidioc_s_dv_preset = vpif_s_dv_preset,
1593 .vidioc_g_dv_preset = vpif_g_dv_preset,
1594 .vidioc_s_dv_timings = vpif_s_dv_timings,
1595 .vidioc_g_dv_timings = vpif_g_dv_timings,
1596 .vidioc_g_chip_ident = vpif_g_chip_ident,
1597#ifdef CONFIG_VIDEO_ADV_DEBUG
1598 .vidioc_g_register = vpif_dbg_g_register,
1599 .vidioc_s_register = vpif_dbg_s_register,
1600#endif
1601 .vidioc_log_status = vpif_log_status,
1602};
1603
1604static const struct v4l2_file_operations vpif_fops = {
1605 .owner = THIS_MODULE,
1606 .open = vpif_open,
1607 .release = vpif_release,
1608 .unlocked_ioctl = video_ioctl2,
1609 .mmap = vpif_mmap,
1610 .poll = vpif_poll
1611};
1612
1613static struct video_device vpif_video_template = {
1614 .name = "vpif",
1615 .fops = &vpif_fops,
1616 .ioctl_ops = &vpif_ioctl_ops,
1617 .tvnorms = VPIF_V4L2_STD,
1618 .current_norm = V4L2_STD_625_50,
1619
1620};
1621
1622/*Configure the channels, buffer sizei, request irq */
1623static int initialize_vpif(void)
1624{
1625 int free_channel_objects_index;
1626 int free_buffer_channel_index;
1627 int free_buffer_index;
1628 int err = 0, i, j;
1629
1630 /* Default number of buffers should be 3 */
1631 if ((ch2_numbuffers > 0) &&
1632 (ch2_numbuffers < config_params.min_numbuffers))
1633 ch2_numbuffers = config_params.min_numbuffers;
1634 if ((ch3_numbuffers > 0) &&
1635 (ch3_numbuffers < config_params.min_numbuffers))
1636 ch3_numbuffers = config_params.min_numbuffers;
1637
1638 /* Set buffer size to min buffers size if invalid buffer size is
1639 * given */
1640 if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO])
1641 ch2_bufsize =
1642 config_params.min_bufsize[VPIF_CHANNEL2_VIDEO];
1643 if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO])
1644 ch3_bufsize =
1645 config_params.min_bufsize[VPIF_CHANNEL3_VIDEO];
1646
1647 config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers;
1648
1649 if (ch2_numbuffers) {
1650 config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] =
1651 ch2_bufsize;
1652 }
1653 config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers;
1654
1655 if (ch3_numbuffers) {
1656 config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] =
1657 ch3_bufsize;
1658 }
1659
1660 /* Allocate memory for six channel objects */
1661 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1662 vpif_obj.dev[i] =
1663 kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1664 /* If memory allocation fails, return error */
1665 if (!vpif_obj.dev[i]) {
1666 free_channel_objects_index = i;
1667 err = -ENOMEM;
1668 goto vpif_init_free_channel_objects;
1669 }
1670 }
1671
1672 free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES;
1673 free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS;
1674 free_buffer_index = config_params.numbuffers[i - 1];
1675
1676 return 0;
1677
1678vpif_init_free_channel_objects:
1679 for (j = 0; j < free_channel_objects_index; j++)
1680 kfree(vpif_obj.dev[j]);
1681 return err;
1682}
1683
1684/*
1685 * vpif_probe: This function creates device entries by register itself to the
1686 * V4L2 driver and initializes fields of each channel objects
1687 */
1688static __init int vpif_probe(struct platform_device *pdev)
1689{
1690 struct vpif_subdev_info *subdevdata;
1691 struct vpif_display_config *config;
1692 int i, j = 0, k, q, m, err = 0;
1693 struct i2c_adapter *i2c_adap;
1694 struct common_obj *common;
1695 struct channel_obj *ch;
1696 struct video_device *vfd;
1697 struct resource *res;
1698 int subdev_count;
1699 size_t size;
1700
1701 vpif_dev = &pdev->dev;
1702 err = initialize_vpif();
1703
1704 if (err) {
1705 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1706 return err;
1707 }
1708
1709 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1710 if (err) {
1711 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1712 return err;
1713 }
1714
1715 k = 0;
1716 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
1717 for (i = res->start; i <= res->end; i++) {
1718 if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
1719 "VPIF_Display",
1720 (void *)(&vpif_obj.dev[k]->channel_id))) {
1721 err = -EBUSY;
1722 goto vpif_int_err;
1723 }
1724 }
1725 k++;
1726 }
1727
1728 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1729
1730 /* Get the pointer to the channel object */
1731 ch = vpif_obj.dev[i];
1732
1733 /* Allocate memory for video device */
1734 vfd = video_device_alloc();
1735 if (vfd == NULL) {
1736 for (j = 0; j < i; j++) {
1737 ch = vpif_obj.dev[j];
1738 video_device_release(ch->video_dev);
1739 }
1740 err = -ENOMEM;
1741 goto vpif_int_err;
1742 }
1743
1744 /* Initialize field of video device */
1745 *vfd = vpif_video_template;
1746 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
1747 vfd->release = video_device_release;
1748 snprintf(vfd->name, sizeof(vfd->name),
1749 "VPIF_Display_DRIVER_V%s",
1750 VPIF_DISPLAY_VERSION);
1751
1752 /* Set video_dev to the video device */
1753 ch->video_dev = vfd;
1754 }
1755
1756 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1757 if (res) {
1758 size = resource_size(res);
1759 /* The resources are divided into two equal memory and when
1760 * we have HD output we can add them together
1761 */
1762 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1763 ch = vpif_obj.dev[j];
1764 ch->channel_id = j;
1765
1766 /* only enabled if second resource exists */
1767 config_params.video_limit[ch->channel_id] = 0;
1768 if (size)
1769 config_params.video_limit[ch->channel_id] =
1770 size/2;
1771 }
1772 }
1773
1774 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1775 ch = vpif_obj.dev[j];
1776 /* Initialize field of the channel objects */
1777 atomic_set(&ch->usrs, 0);
1778 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1779 ch->common[k].numbuffers = 0;
1780 common = &ch->common[k];
1781 common->io_usrs = 0;
1782 common->started = 0;
1783 spin_lock_init(&common->irqlock);
1784 mutex_init(&common->lock);
1785 common->numbuffers = 0;
1786 common->set_addr = NULL;
1787 common->ytop_off = common->ybtm_off = 0;
1788 common->ctop_off = common->cbtm_off = 0;
1789 common->cur_frm = common->next_frm = NULL;
1790 memset(&common->fmt, 0, sizeof(common->fmt));
1791 common->numbuffers = config_params.numbuffers[k];
1792
1793 }
1794 ch->initialized = 0;
1795 ch->channel_id = j;
1796 if (j < 2)
1797 ch->common[VPIF_VIDEO_INDEX].numbuffers =
1798 config_params.numbuffers[ch->channel_id];
1799 else
1800 ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
1801
1802 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1803
1804 /* Initialize prio member of channel object */
1805 v4l2_prio_init(&ch->prio);
1806 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1807 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1808 ch->video_dev->lock = &common->lock;
1809
1810 /* register video device */
1811 vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
1812 (int)ch, (int)&ch->video_dev);
1813
1814 err = video_register_device(ch->video_dev,
1815 VFL_TYPE_GRABBER, (j ? 3 : 2));
1816 if (err < 0)
1817 goto probe_out;
1818
1819 video_set_drvdata(ch->video_dev, ch);
1820 }
1821
1822 i2c_adap = i2c_get_adapter(1);
1823 config = pdev->dev.platform_data;
1824 subdev_count = config->subdev_count;
1825 subdevdata = config->subdevinfo;
1826 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1827 GFP_KERNEL);
1828 if (vpif_obj.sd == NULL) {
1829 vpif_err("unable to allocate memory for subdevice pointers\n");
1830 err = -ENOMEM;
1831 goto probe_out;
1832 }
1833
1834 for (i = 0; i < subdev_count; i++) {
1835 vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1836 i2c_adap,
1837 &subdevdata[i].board_info,
1838 NULL);
1839 if (!vpif_obj.sd[i]) {
1840 vpif_err("Error registering v4l2 subdevice\n");
1841 goto probe_subdev_out;
1842 }
1843
1844 if (vpif_obj.sd[i])
1845 vpif_obj.sd[i]->grp_id = 1 << i;
1846 }
1847
1848 v4l2_info(&vpif_obj.v4l2_dev,
1849 " VPIF display driver initialized\n");
1850 return 0;
1851
1852probe_subdev_out:
1853 kfree(vpif_obj.sd);
1854probe_out:
1855 for (k = 0; k < j; k++) {
1856 ch = vpif_obj.dev[k];
1857 video_unregister_device(ch->video_dev);
1858 video_device_release(ch->video_dev);
1859 ch->video_dev = NULL;
1860 }
1861vpif_int_err:
1862 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1863 vpif_err("VPIF IRQ request failed\n");
1864 for (q = k; k >= 0; k--) {
1865 for (m = i; m >= res->start; m--)
1866 free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id));
1867 res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1);
1868 m = res->end;
1869 }
1870
1871 return err;
1872}
1873
1874/*
1875 * vpif_remove: It un-register channels from V4L2 driver
1876 */
1877static int vpif_remove(struct platform_device *device)
1878{
1879 struct channel_obj *ch;
1880 int i;
1881
1882 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1883
1884 /* un-register device */
1885 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1886 /* Get the pointer to the channel object */
1887 ch = vpif_obj.dev[i];
1888 /* Unregister video device */
1889 video_unregister_device(ch->video_dev);
1890
1891 ch->video_dev = NULL;
1892 }
1893
1894 return 0;
1895}
1896
1897#ifdef CONFIG_PM
1898static int vpif_suspend(struct device *dev)
1899{
1900 struct common_obj *common;
1901 struct channel_obj *ch;
1902 int i;
1903
1904 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1905 /* Get the pointer to the channel object */
1906 ch = vpif_obj.dev[i];
1907 common = &ch->common[VPIF_VIDEO_INDEX];
1908 mutex_lock(&common->lock);
1909 if (atomic_read(&ch->usrs) && common->io_usrs) {
1910 /* Disable channel */
1911 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1912 enable_channel2(0);
1913 channel2_intr_enable(0);
1914 }
1915 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1916 common->started == 2) {
1917 enable_channel3(0);
1918 channel3_intr_enable(0);
1919 }
1920 }
1921 mutex_unlock(&common->lock);
1922 }
1923
1924 return 0;
1925}
1926
1927static int vpif_resume(struct device *dev)
1928{
1929
1930 struct common_obj *common;
1931 struct channel_obj *ch;
1932 int i;
1933
1934 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1935 /* Get the pointer to the channel object */
1936 ch = vpif_obj.dev[i];
1937 common = &ch->common[VPIF_VIDEO_INDEX];
1938 mutex_lock(&common->lock);
1939 if (atomic_read(&ch->usrs) && common->io_usrs) {
1940 /* Enable channel */
1941 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1942 enable_channel2(1);
1943 channel2_intr_enable(1);
1944 }
1945 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1946 common->started == 2) {
1947 enable_channel3(1);
1948 channel3_intr_enable(1);
1949 }
1950 }
1951 mutex_unlock(&common->lock);
1952 }
1953
1954 return 0;
1955}
1956
1957static const struct dev_pm_ops vpif_pm = {
1958 .suspend = vpif_suspend,
1959 .resume = vpif_resume,
1960};
1961
1962#define vpif_pm_ops (&vpif_pm)
1963#else
1964#define vpif_pm_ops NULL
1965#endif
1966
1967static __refdata struct platform_driver vpif_driver = {
1968 .driver = {
1969 .name = "vpif_display",
1970 .owner = THIS_MODULE,
1971 .pm = vpif_pm_ops,
1972 },
1973 .probe = vpif_probe,
1974 .remove = vpif_remove,
1975};
1976
1977static __init int vpif_init(void)
1978{
1979 return platform_driver_register(&vpif_driver);
1980}
1981
1982/*
1983 * vpif_cleanup: This function un-registers device and driver to the kernel,
1984 * frees requested irq handler and de-allocates memory allocated for channel
1985 * objects.
1986 */
1987static void vpif_cleanup(void)
1988{
1989 struct platform_device *pdev;
1990 struct resource *res;
1991 int irq_num;
1992 int i = 0;
1993
1994 pdev = container_of(vpif_dev, struct platform_device, dev);
1995
1996 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
1997 for (irq_num = res->start; irq_num <= res->end; irq_num++)
1998 free_irq(irq_num,
1999 (void *)(&vpif_obj.dev[i]->channel_id));
2000 i++;
2001 }
2002
2003 platform_driver_unregister(&vpif_driver);
2004 kfree(vpif_obj.sd);
2005 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)
2006 kfree(vpif_obj.dev[i]);
2007}
2008
2009module_init(vpif_init);
2010module_exit(vpif_cleanup);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-14 02:26:22 -0500