2 * V4L2 Driver for i.MXL/i.MXL camera (CSI) host
4 * Copyright (C) 2008, Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
5 * Copyright (C) 2009, Darius Augulis <augulis.darius@gmail.com>
7 * Based on PXA SoC camera driver
8 * Copyright (C) 2006, Sascha Hauer, Pengutronix
9 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/clk.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/errno.h>
22 #include <linux/init.h>
23 #include <linux/interrupt.h>
25 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/moduleparam.h>
29 #include <linux/mutex.h>
30 #include <linux/platform_device.h>
31 #include <linux/time.h>
32 #include <linux/version.h>
33 #include <linux/videodev2.h>
35 #include <media/soc_camera.h>
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-dev.h>
38 #include <media/videobuf-dma-contig.h>
42 #include <mach/dma-mx1-mx2.h>
43 #include <mach/hardware.h>
44 #include <mach/mx1_camera.h>
49 #define DMA_CCR(x) (0x8c + ((x) << 6)) /* Control Registers */
50 #define DMA_DIMR 0x08 /* Interrupt mask Register */
51 #define CSICR1 0x00 /* CSI Control Register 1 */
52 #define CSISR 0x08 /* CSI Status Register */
53 #define CSIRXR 0x10 /* CSI RxFIFO Register */
55 #define CSICR1_RXFF_LEVEL(x) (((x) & 0x3) << 19)
56 #define CSICR1_SOF_POL (1 << 17)
57 #define CSICR1_SOF_INTEN (1 << 16)
58 #define CSICR1_MCLKDIV(x) (((x) & 0xf) << 12)
59 #define CSICR1_MCLKEN (1 << 9)
60 #define CSICR1_FCC (1 << 8)
61 #define CSICR1_BIG_ENDIAN (1 << 7)
62 #define CSICR1_CLR_RXFIFO (1 << 5)
63 #define CSICR1_GCLK_MODE (1 << 4)
64 #define CSICR1_DATA_POL (1 << 2)
65 #define CSICR1_REDGE (1 << 1)
66 #define CSICR1_EN (1 << 0)
68 #define CSISR_SFF_OR_INT (1 << 25)
69 #define CSISR_RFF_OR_INT (1 << 24)
70 #define CSISR_STATFF_INT (1 << 21)
71 #define CSISR_RXFF_INT (1 << 18)
72 #define CSISR_SOF_INT (1 << 16)
73 #define CSISR_DRDY (1 << 0)
75 #define VERSION_CODE KERNEL_VERSION(0, 0, 1)
76 #define DRIVER_NAME "mx1-camera"
78 #define CSI_IRQ_MASK (CSISR_SFF_OR_INT | CSISR_RFF_OR_INT | \
79 CSISR_STATFF_INT | CSISR_RXFF_INT | CSISR_SOF_INT)
81 #define CSI_BUS_FLAGS (SOCAM_MASTER | SOCAM_HSYNC_ACTIVE_HIGH | \
82 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | \
83 SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | \
84 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_LOW | \
87 #define MAX_VIDEO_MEM 16 /* Video memory limit in megabytes */
93 /* buffer for one video frame */
95 /* common v4l buffer stuff -- must be first */
96 struct videobuf_buffer vb;
97 const struct soc_camera_data_format *fmt;
101 /* i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor
102 * Interface. If anyone ever builds hardware to enable more than
103 * one camera, they will have to modify this driver too */
104 struct mx1_camera_dev {
105 struct soc_camera_device *icd;
106 struct mx1_camera_pdata *pdata;
107 struct mx1_buffer *active;
109 struct resource *res;
111 struct list_head capture;
122 * Videobuf operations
124 static int mx1_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
127 struct soc_camera_device *icd = vq->priv_data;
129 *size = icd->width * icd->height *
130 ((icd->current_fmt->depth + 7) >> 3);
135 while (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
138 dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
143 static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf)
145 struct soc_camera_device *icd = vq->priv_data;
146 struct videobuf_buffer *vb = &buf->vb;
148 BUG_ON(in_interrupt());
150 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
151 vb, vb->baddr, vb->bsize);
153 /* This waits until this buffer is out of danger, i.e., until it is no
154 * longer in STATE_QUEUED or STATE_ACTIVE */
155 videobuf_waiton(vb, 0, 0);
156 videobuf_dma_contig_free(vq, vb);
158 vb->state = VIDEOBUF_NEEDS_INIT;
161 static int mx1_videobuf_prepare(struct videobuf_queue *vq,
162 struct videobuf_buffer *vb, enum v4l2_field field)
164 struct soc_camera_device *icd = vq->priv_data;
165 struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
168 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
169 vb, vb->baddr, vb->bsize);
171 /* Added list head initialization on alloc */
172 WARN_ON(!list_empty(&vb->queue));
174 BUG_ON(NULL == icd->current_fmt);
176 /* I think, in buf_prepare you only have to protect global data,
177 * the actual buffer is yours */
180 if (buf->fmt != icd->current_fmt ||
181 vb->width != icd->width ||
182 vb->height != icd->height ||
183 vb->field != field) {
184 buf->fmt = icd->current_fmt;
185 vb->width = icd->width;
186 vb->height = icd->height;
188 vb->state = VIDEOBUF_NEEDS_INIT;
191 vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3);
192 if (0 != vb->baddr && vb->bsize < vb->size) {
197 if (vb->state == VIDEOBUF_NEEDS_INIT) {
198 ret = videobuf_iolock(vq, vb, NULL);
202 vb->state = VIDEOBUF_PREPARED;
210 free_buffer(vq, buf);
216 static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev)
218 struct videobuf_buffer *vbuf = &pcdev->active->vb;
221 if (unlikely(!pcdev->active)) {
222 dev_err(pcdev->dev, "DMA End IRQ with no active buffer\n");
226 /* setup sg list for future DMA */
227 ret = imx_dma_setup_single(pcdev->dma_chan,
228 videobuf_to_dma_contig(vbuf),
229 vbuf->size, pcdev->res->start +
230 CSIRXR, DMA_MODE_READ);
232 dev_err(pcdev->dev, "Failed to setup DMA sg list\n");
237 static void mx1_videobuf_queue(struct videobuf_queue *vq,
238 struct videobuf_buffer *vb)
240 struct soc_camera_device *icd = vq->priv_data;
241 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
242 struct mx1_camera_dev *pcdev = ici->priv;
243 struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
246 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
247 vb, vb->baddr, vb->bsize);
249 spin_lock_irqsave(&pcdev->lock, flags);
251 list_add_tail(&vb->queue, &pcdev->capture);
253 vb->state = VIDEOBUF_ACTIVE;
255 if (!pcdev->active) {
258 /* setup sg list for future DMA */
259 if (!mx1_camera_setup_dma(pcdev)) {
262 temp = __raw_readl(pcdev->base + CSICR1) |
264 __raw_writel(temp, pcdev->base + CSICR1);
268 spin_unlock_irqrestore(&pcdev->lock, flags);
271 static void mx1_videobuf_release(struct videobuf_queue *vq,
272 struct videobuf_buffer *vb)
274 struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
276 struct soc_camera_device *icd = vq->priv_data;
278 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
279 vb, vb->baddr, vb->bsize);
282 case VIDEOBUF_ACTIVE:
283 dev_dbg(&icd->dev, "%s (active)\n", __func__);
285 case VIDEOBUF_QUEUED:
286 dev_dbg(&icd->dev, "%s (queued)\n", __func__);
288 case VIDEOBUF_PREPARED:
289 dev_dbg(&icd->dev, "%s (prepared)\n", __func__);
292 dev_dbg(&icd->dev, "%s (unknown)\n", __func__);
297 free_buffer(vq, buf);
300 static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
301 struct videobuf_buffer *vb,
302 struct mx1_buffer *buf)
304 /* _init is used to debug races, see comment in mx1_camera_reqbufs() */
305 list_del_init(&vb->queue);
306 vb->state = VIDEOBUF_DONE;
307 do_gettimeofday(&vb->ts);
311 if (list_empty(&pcdev->capture)) {
312 pcdev->active = NULL;
316 pcdev->active = list_entry(pcdev->capture.next,
317 struct mx1_buffer, vb.queue);
319 /* setup sg list for future DMA */
320 if (likely(!mx1_camera_setup_dma(pcdev))) {
324 temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN;
325 __raw_writel(temp, pcdev->base + CSICR1);
329 static void mx1_camera_dma_irq(int channel, void *data)
331 struct mx1_camera_dev *pcdev = data;
332 struct mx1_buffer *buf;
333 struct videobuf_buffer *vb;
336 spin_lock_irqsave(&pcdev->lock, flags);
338 imx_dma_disable(channel);
340 if (unlikely(!pcdev->active)) {
341 dev_err(pcdev->dev, "DMA End IRQ with no active buffer\n");
345 vb = &pcdev->active->vb;
346 buf = container_of(vb, struct mx1_buffer, vb);
347 WARN_ON(buf->inwork || list_empty(&vb->queue));
348 dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
349 vb, vb->baddr, vb->bsize);
351 mx1_camera_wakeup(pcdev, vb, buf);
353 spin_unlock_irqrestore(&pcdev->lock, flags);
356 static struct videobuf_queue_ops mx1_videobuf_ops = {
357 .buf_setup = mx1_videobuf_setup,
358 .buf_prepare = mx1_videobuf_prepare,
359 .buf_queue = mx1_videobuf_queue,
360 .buf_release = mx1_videobuf_release,
363 static void mx1_camera_init_videobuf(struct videobuf_queue *q,
364 struct soc_camera_device *icd)
366 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
367 struct mx1_camera_dev *pcdev = ici->priv;
369 videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, pcdev->dev,
371 V4L2_BUF_TYPE_VIDEO_CAPTURE,
373 sizeof(struct mx1_buffer), icd);
376 static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
378 unsigned int mclk = pcdev->mclk;
380 unsigned long lcdclk;
382 lcdclk = clk_get_rate(pcdev->clk);
384 /* We verify platform_mclk_10khz != 0, so if anyone breaks it, here
385 * they get a nice Oops */
386 div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
388 dev_dbg(pcdev->dev, "System clock %lukHz, target freq %dkHz, "
389 "divisor %lu\n", lcdclk / 1000, mclk / 1000, div);
394 static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
396 unsigned int csicr1 = CSICR1_EN;
398 dev_dbg(pcdev->dev, "Activate device\n");
400 clk_enable(pcdev->clk);
402 /* enable CSI before doing anything else */
403 __raw_writel(csicr1, pcdev->base + CSICR1);
405 csicr1 |= CSICR1_MCLKEN | CSICR1_FCC | CSICR1_GCLK_MODE;
406 csicr1 |= CSICR1_MCLKDIV(mclk_get_divisor(pcdev));
407 csicr1 |= CSICR1_RXFF_LEVEL(2); /* 16 words */
409 __raw_writel(csicr1, pcdev->base + CSICR1);
412 static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
414 dev_dbg(pcdev->dev, "Deactivate device\n");
416 /* Disable all CSI interface */
417 __raw_writel(0x00, pcdev->base + CSICR1);
419 clk_disable(pcdev->clk);
422 /* The following two functions absolutely depend on the fact, that
423 * there can be only one camera on i.MX1/i.MXL camera sensor interface */
424 static int mx1_camera_add_device(struct soc_camera_device *icd)
426 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
427 struct mx1_camera_dev *pcdev = ici->priv;
435 dev_info(&icd->dev, "MX1 Camera driver attached to camera %d\n",
438 mx1_camera_activate(pcdev);
439 ret = icd->ops->init(icd);
448 static void mx1_camera_remove_device(struct soc_camera_device *icd)
450 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
451 struct mx1_camera_dev *pcdev = ici->priv;
454 BUG_ON(icd != pcdev->icd);
456 /* disable interrupts */
457 csicr1 = __raw_readl(pcdev->base + CSICR1) & ~CSI_IRQ_MASK;
458 __raw_writel(csicr1, pcdev->base + CSICR1);
460 /* Stop DMA engine */
461 imx_dma_disable(pcdev->dma_chan);
463 dev_info(&icd->dev, "MX1 Camera driver detached from camera %d\n",
466 icd->ops->release(icd);
468 mx1_camera_deactivate(pcdev);
473 static int mx1_camera_set_crop(struct soc_camera_device *icd,
474 struct v4l2_rect *rect)
476 return icd->ops->set_crop(icd, rect);
479 static int mx1_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
481 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
482 struct mx1_camera_dev *pcdev = ici->priv;
483 unsigned long camera_flags, common_flags;
487 camera_flags = icd->ops->query_bus_param(icd);
489 /* MX1 supports only 8bit buswidth */
490 common_flags = soc_camera_bus_param_compatible(camera_flags,
497 /* Make choises, based on platform choice */
498 if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
499 (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
501 pcdev->pdata->flags & MX1_CAMERA_VSYNC_HIGH)
502 common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW;
504 common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH;
507 if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) &&
508 (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) {
510 pcdev->pdata->flags & MX1_CAMERA_PCLK_RISING)
511 common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING;
513 common_flags &= ~SOCAM_PCLK_SAMPLE_RISING;
516 if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) &&
517 (common_flags & SOCAM_DATA_ACTIVE_LOW)) {
519 pcdev->pdata->flags & MX1_CAMERA_DATA_HIGH)
520 common_flags &= ~SOCAM_DATA_ACTIVE_LOW;
522 common_flags &= ~SOCAM_DATA_ACTIVE_HIGH;
525 ret = icd->ops->set_bus_param(icd, common_flags);
529 csicr1 = __raw_readl(pcdev->base + CSICR1);
531 if (common_flags & SOCAM_PCLK_SAMPLE_RISING)
532 csicr1 |= CSICR1_REDGE;
533 if (common_flags & SOCAM_VSYNC_ACTIVE_HIGH)
534 csicr1 |= CSICR1_SOF_POL;
535 if (common_flags & SOCAM_DATA_ACTIVE_LOW)
536 csicr1 |= CSICR1_DATA_POL;
538 __raw_writel(csicr1, pcdev->base + CSICR1);
543 static int mx1_camera_set_fmt(struct soc_camera_device *icd,
544 struct v4l2_format *f)
546 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
547 const struct soc_camera_format_xlate *xlate;
548 struct v4l2_pix_format *pix = &f->fmt.pix;
551 xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
553 dev_warn(&ici->dev, "Format %x not found\n", pix->pixelformat);
557 ret = icd->ops->set_fmt(icd, f);
559 icd->buswidth = xlate->buswidth;
560 icd->current_fmt = xlate->host_fmt;
566 static int mx1_camera_try_fmt(struct soc_camera_device *icd,
567 struct v4l2_format *f)
569 /* TODO: limit to mx1 hardware capabilities */
571 /* limit to sensor capabilities */
572 return icd->ops->try_fmt(icd, f);
575 static int mx1_camera_reqbufs(struct soc_camera_file *icf,
576 struct v4l2_requestbuffers *p)
580 /* This is for locking debugging only. I removed spinlocks and now I
581 * check whether .prepare is ever called on a linked buffer, or whether
582 * a dma IRQ can occur for an in-work or unlinked buffer. Until now
583 * it hadn't triggered */
584 for (i = 0; i < p->count; i++) {
585 struct mx1_buffer *buf = container_of(icf->vb_vidq.bufs[i],
586 struct mx1_buffer, vb);
588 INIT_LIST_HEAD(&buf->vb.queue);
594 static unsigned int mx1_camera_poll(struct file *file, poll_table *pt)
596 struct soc_camera_file *icf = file->private_data;
597 struct mx1_buffer *buf;
599 buf = list_entry(icf->vb_vidq.stream.next, struct mx1_buffer,
602 poll_wait(file, &buf->vb.done, pt);
604 if (buf->vb.state == VIDEOBUF_DONE ||
605 buf->vb.state == VIDEOBUF_ERROR)
606 return POLLIN | POLLRDNORM;
611 static int mx1_camera_querycap(struct soc_camera_host *ici,
612 struct v4l2_capability *cap)
614 /* cap->name is set by the friendly caller:-> */
615 strlcpy(cap->card, "i.MX1/i.MXL Camera", sizeof(cap->card));
616 cap->version = VERSION_CODE;
617 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
622 static struct soc_camera_host_ops mx1_soc_camera_host_ops = {
623 .owner = THIS_MODULE,
624 .add = mx1_camera_add_device,
625 .remove = mx1_camera_remove_device,
626 .set_bus_param = mx1_camera_set_bus_param,
627 .set_crop = mx1_camera_set_crop,
628 .set_fmt = mx1_camera_set_fmt,
629 .try_fmt = mx1_camera_try_fmt,
630 .init_videobuf = mx1_camera_init_videobuf,
631 .reqbufs = mx1_camera_reqbufs,
632 .poll = mx1_camera_poll,
633 .querycap = mx1_camera_querycap,
636 /* Should be allocated dynamically too, but we have only one. */
637 static struct soc_camera_host mx1_soc_camera_host = {
638 .drv_name = DRIVER_NAME,
639 .ops = &mx1_soc_camera_host_ops,
642 static struct fiq_handler fh = {
646 static int __init mx1_camera_probe(struct platform_device *pdev)
648 struct mx1_camera_dev *pcdev;
649 struct resource *res;
656 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
657 irq = platform_get_irq(pdev, 0);
663 clk = clk_get(&pdev->dev, "csi_clk");
669 pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
671 dev_err(&pdev->dev, "Could not allocate pcdev\n");
676 dev_set_drvdata(&pdev->dev, pcdev);
680 pcdev->pdata = pdev->dev.platform_data;
683 pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
687 "mclk_10khz == 0! Please, fix your platform data. "
688 "Using default 20MHz\n");
689 pcdev->mclk = 20000000;
692 INIT_LIST_HEAD(&pcdev->capture);
693 spin_lock_init(&pcdev->lock);
696 * Request the regions.
698 if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) {
703 base = ioremap(res->start, resource_size(res));
710 pcdev->dev = &pdev->dev;
713 pcdev->dma_chan = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_HIGH);
714 if (pcdev->dma_chan < 0) {
715 dev_err(pcdev->dev, "Can't request DMA for MX1 CSI\n");
719 dev_dbg(pcdev->dev, "got DMA channel %d\n", pcdev->dma_chan);
721 imx_dma_setup_handlers(pcdev->dma_chan, mx1_camera_dma_irq, NULL,
724 imx_dma_config_channel(pcdev->dma_chan, IMX_DMA_TYPE_FIFO,
725 IMX_DMA_MEMSIZE_32, DMA_REQ_CSI_R, 0);
726 /* burst length : 16 words = 64 bytes */
727 imx_dma_config_burstlen(pcdev->dma_chan, 0);
730 err = claim_fiq(&fh);
732 dev_err(pcdev->dev, "Camera interrupt register failed \n");
736 set_fiq_handler(&mx1_camera_sof_fiq_start, &mx1_camera_sof_fiq_end -
737 &mx1_camera_sof_fiq_start);
739 regs.ARM_r8 = DMA_BASE + DMA_DIMR;
740 regs.ARM_r9 = DMA_BASE + DMA_CCR(pcdev->dma_chan);
741 regs.ARM_r10 = (long)pcdev->base + CSICR1;
742 regs.ARM_fp = (long)pcdev->base + CSISR;
743 regs.ARM_sp = 1 << pcdev->dma_chan;
746 mxc_set_irq_fiq(irq, 1);
749 mx1_soc_camera_host.priv = pcdev;
750 mx1_soc_camera_host.dev.parent = &pdev->dev;
751 mx1_soc_camera_host.nr = pdev->id;
752 err = soc_camera_host_register(&mx1_soc_camera_host);
756 dev_info(&pdev->dev, "MX1 Camera driver loaded\n");
762 mxc_set_irq_fiq(irq, 0);
765 imx_dma_free(pcdev->dma_chan);
769 release_mem_region(res->start, resource_size(res));
778 static int __exit mx1_camera_remove(struct platform_device *pdev)
780 struct mx1_camera_dev *pcdev = platform_get_drvdata(pdev);
781 struct resource *res;
783 imx_dma_free(pcdev->dma_chan);
784 disable_fiq(pcdev->irq);
785 mxc_set_irq_fiq(pcdev->irq, 0);
790 soc_camera_host_unregister(&mx1_soc_camera_host);
792 iounmap(pcdev->base);
795 release_mem_region(res->start, resource_size(res));
799 dev_info(&pdev->dev, "MX1 Camera driver unloaded\n");
804 static struct platform_driver mx1_camera_driver = {
808 .remove = __exit_p(mx1_camera_remove),
811 static int __init mx1_camera_init(void)
813 return platform_driver_probe(&mx1_camera_driver, mx1_camera_probe);
816 static void __exit mx1_camera_exit(void)
818 return platform_driver_unregister(&mx1_camera_driver);
821 module_init(mx1_camera_init);
822 module_exit(mx1_camera_exit);
824 MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver");
825 MODULE_AUTHOR("Paulius Zaleckas <paulius.zaleckas@teltonika.lt>");
826 MODULE_LICENSE("GPL v2");
827 MODULE_ALIAS("platform:" DRIVER_NAME);