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_host soc_host;
106 struct soc_camera_device *icd;
107 struct mx1_camera_pdata *pdata;
108 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->rect_current.width * icd->rect_current.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->rect_current.width ||
182 vb->height != icd->rect_current.height ||
183 vb->field != field) {
184 buf->fmt = icd->current_fmt;
185 vb->width = icd->rect_current.width;
186 vb->height = icd->rect_current.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->icd->dev.parent, "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->icd->dev.parent, "Failed to setup DMA sg list\n");
237 /* Called under spinlock_irqsave(&pcdev->lock, ...) */
238 static void mx1_videobuf_queue(struct videobuf_queue *vq,
239 struct videobuf_buffer *vb)
241 struct soc_camera_device *icd = vq->priv_data;
242 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
243 struct mx1_camera_dev *pcdev = ici->priv;
244 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 list_add_tail(&vb->queue, &pcdev->capture);
251 vb->state = VIDEOBUF_ACTIVE;
253 if (!pcdev->active) {
256 /* setup sg list for future DMA */
257 if (!mx1_camera_setup_dma(pcdev)) {
260 temp = __raw_readl(pcdev->base + CSICR1) |
262 __raw_writel(temp, pcdev->base + CSICR1);
267 static void mx1_videobuf_release(struct videobuf_queue *vq,
268 struct videobuf_buffer *vb)
270 struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
272 struct soc_camera_device *icd = vq->priv_data;
274 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
275 vb, vb->baddr, vb->bsize);
278 case VIDEOBUF_ACTIVE:
279 dev_dbg(&icd->dev, "%s (active)\n", __func__);
281 case VIDEOBUF_QUEUED:
282 dev_dbg(&icd->dev, "%s (queued)\n", __func__);
284 case VIDEOBUF_PREPARED:
285 dev_dbg(&icd->dev, "%s (prepared)\n", __func__);
288 dev_dbg(&icd->dev, "%s (unknown)\n", __func__);
293 free_buffer(vq, buf);
296 static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
297 struct videobuf_buffer *vb,
298 struct mx1_buffer *buf)
300 /* _init is used to debug races, see comment in mx1_camera_reqbufs() */
301 list_del_init(&vb->queue);
302 vb->state = VIDEOBUF_DONE;
303 do_gettimeofday(&vb->ts);
307 if (list_empty(&pcdev->capture)) {
308 pcdev->active = NULL;
312 pcdev->active = list_entry(pcdev->capture.next,
313 struct mx1_buffer, vb.queue);
315 /* setup sg list for future DMA */
316 if (likely(!mx1_camera_setup_dma(pcdev))) {
320 temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN;
321 __raw_writel(temp, pcdev->base + CSICR1);
325 static void mx1_camera_dma_irq(int channel, void *data)
327 struct mx1_camera_dev *pcdev = data;
328 struct mx1_buffer *buf;
329 struct videobuf_buffer *vb;
332 spin_lock_irqsave(&pcdev->lock, flags);
334 imx_dma_disable(channel);
336 if (unlikely(!pcdev->active)) {
337 dev_err(pcdev->icd->dev.parent, "DMA End IRQ with no active buffer\n");
341 vb = &pcdev->active->vb;
342 buf = container_of(vb, struct mx1_buffer, vb);
343 WARN_ON(buf->inwork || list_empty(&vb->queue));
344 dev_dbg(pcdev->icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
345 vb, vb->baddr, vb->bsize);
347 mx1_camera_wakeup(pcdev, vb, buf);
349 spin_unlock_irqrestore(&pcdev->lock, flags);
352 static struct videobuf_queue_ops mx1_videobuf_ops = {
353 .buf_setup = mx1_videobuf_setup,
354 .buf_prepare = mx1_videobuf_prepare,
355 .buf_queue = mx1_videobuf_queue,
356 .buf_release = mx1_videobuf_release,
359 static void mx1_camera_init_videobuf(struct videobuf_queue *q,
360 struct soc_camera_device *icd)
362 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
363 struct mx1_camera_dev *pcdev = ici->priv;
365 videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->dev.parent,
367 V4L2_BUF_TYPE_VIDEO_CAPTURE,
369 sizeof(struct mx1_buffer), icd);
372 static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
374 unsigned int mclk = pcdev->mclk;
376 unsigned long lcdclk;
378 lcdclk = clk_get_rate(pcdev->clk);
380 /* We verify platform_mclk_10khz != 0, so if anyone breaks it, here
381 * they get a nice Oops */
382 div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
384 dev_dbg(pcdev->icd->dev.parent, "System clock %lukHz, target freq %dkHz, "
385 "divisor %lu\n", lcdclk / 1000, mclk / 1000, div);
390 static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
392 unsigned int csicr1 = CSICR1_EN;
394 dev_dbg(pcdev->icd->dev.parent, "Activate device\n");
396 clk_enable(pcdev->clk);
398 /* enable CSI before doing anything else */
399 __raw_writel(csicr1, pcdev->base + CSICR1);
401 csicr1 |= CSICR1_MCLKEN | CSICR1_FCC | CSICR1_GCLK_MODE;
402 csicr1 |= CSICR1_MCLKDIV(mclk_get_divisor(pcdev));
403 csicr1 |= CSICR1_RXFF_LEVEL(2); /* 16 words */
405 __raw_writel(csicr1, pcdev->base + CSICR1);
408 static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
410 dev_dbg(pcdev->icd->dev.parent, "Deactivate device\n");
412 /* Disable all CSI interface */
413 __raw_writel(0x00, pcdev->base + CSICR1);
415 clk_disable(pcdev->clk);
418 /* The following two functions absolutely depend on the fact, that
419 * there can be only one camera on i.MX1/i.MXL camera sensor interface */
420 static int mx1_camera_add_device(struct soc_camera_device *icd)
422 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
423 struct mx1_camera_dev *pcdev = ici->priv;
431 dev_info(&icd->dev, "MX1 Camera driver attached to camera %d\n",
434 mx1_camera_activate(pcdev);
442 static void mx1_camera_remove_device(struct soc_camera_device *icd)
444 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
445 struct mx1_camera_dev *pcdev = ici->priv;
448 BUG_ON(icd != pcdev->icd);
450 /* disable interrupts */
451 csicr1 = __raw_readl(pcdev->base + CSICR1) & ~CSI_IRQ_MASK;
452 __raw_writel(csicr1, pcdev->base + CSICR1);
454 /* Stop DMA engine */
455 imx_dma_disable(pcdev->dma_chan);
457 dev_info(&icd->dev, "MX1 Camera driver detached from camera %d\n",
460 mx1_camera_deactivate(pcdev);
465 static int mx1_camera_set_crop(struct soc_camera_device *icd,
466 struct v4l2_rect *rect)
468 return icd->ops->set_crop(icd, rect);
471 static int mx1_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
473 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
474 struct mx1_camera_dev *pcdev = ici->priv;
475 unsigned long camera_flags, common_flags;
479 camera_flags = icd->ops->query_bus_param(icd);
481 /* MX1 supports only 8bit buswidth */
482 common_flags = soc_camera_bus_param_compatible(camera_flags,
489 /* Make choises, based on platform choice */
490 if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
491 (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
493 pcdev->pdata->flags & MX1_CAMERA_VSYNC_HIGH)
494 common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW;
496 common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH;
499 if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) &&
500 (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) {
502 pcdev->pdata->flags & MX1_CAMERA_PCLK_RISING)
503 common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING;
505 common_flags &= ~SOCAM_PCLK_SAMPLE_RISING;
508 if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) &&
509 (common_flags & SOCAM_DATA_ACTIVE_LOW)) {
511 pcdev->pdata->flags & MX1_CAMERA_DATA_HIGH)
512 common_flags &= ~SOCAM_DATA_ACTIVE_LOW;
514 common_flags &= ~SOCAM_DATA_ACTIVE_HIGH;
517 ret = icd->ops->set_bus_param(icd, common_flags);
521 csicr1 = __raw_readl(pcdev->base + CSICR1);
523 if (common_flags & SOCAM_PCLK_SAMPLE_RISING)
524 csicr1 |= CSICR1_REDGE;
525 if (common_flags & SOCAM_VSYNC_ACTIVE_HIGH)
526 csicr1 |= CSICR1_SOF_POL;
527 if (common_flags & SOCAM_DATA_ACTIVE_LOW)
528 csicr1 |= CSICR1_DATA_POL;
530 __raw_writel(csicr1, pcdev->base + CSICR1);
535 static int mx1_camera_set_fmt(struct soc_camera_device *icd,
536 struct v4l2_format *f)
538 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
539 const struct soc_camera_format_xlate *xlate;
540 struct v4l2_pix_format *pix = &f->fmt.pix;
543 xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
545 dev_warn(icd->dev.parent, "Format %x not found\n", pix->pixelformat);
549 ret = v4l2_device_call_until_err(&ici->v4l2_dev, 0, video, s_fmt, f);
551 icd->buswidth = xlate->buswidth;
552 icd->current_fmt = xlate->host_fmt;
558 static int mx1_camera_try_fmt(struct soc_camera_device *icd,
559 struct v4l2_format *f)
561 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
562 /* TODO: limit to mx1 hardware capabilities */
564 /* limit to sensor capabilities */
565 return v4l2_device_call_until_err(&ici->v4l2_dev, 0, video, try_fmt, f);
568 static int mx1_camera_reqbufs(struct soc_camera_file *icf,
569 struct v4l2_requestbuffers *p)
573 /* This is for locking debugging only. I removed spinlocks and now I
574 * check whether .prepare is ever called on a linked buffer, or whether
575 * a dma IRQ can occur for an in-work or unlinked buffer. Until now
576 * it hadn't triggered */
577 for (i = 0; i < p->count; i++) {
578 struct mx1_buffer *buf = container_of(icf->vb_vidq.bufs[i],
579 struct mx1_buffer, vb);
581 INIT_LIST_HEAD(&buf->vb.queue);
587 static unsigned int mx1_camera_poll(struct file *file, poll_table *pt)
589 struct soc_camera_file *icf = file->private_data;
590 struct mx1_buffer *buf;
592 buf = list_entry(icf->vb_vidq.stream.next, struct mx1_buffer,
595 poll_wait(file, &buf->vb.done, pt);
597 if (buf->vb.state == VIDEOBUF_DONE ||
598 buf->vb.state == VIDEOBUF_ERROR)
599 return POLLIN | POLLRDNORM;
604 static int mx1_camera_querycap(struct soc_camera_host *ici,
605 struct v4l2_capability *cap)
607 /* cap->name is set by the friendly caller:-> */
608 strlcpy(cap->card, "i.MX1/i.MXL Camera", sizeof(cap->card));
609 cap->version = VERSION_CODE;
610 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
615 static struct soc_camera_host_ops mx1_soc_camera_host_ops = {
616 .owner = THIS_MODULE,
617 .add = mx1_camera_add_device,
618 .remove = mx1_camera_remove_device,
619 .set_bus_param = mx1_camera_set_bus_param,
620 .set_crop = mx1_camera_set_crop,
621 .set_fmt = mx1_camera_set_fmt,
622 .try_fmt = mx1_camera_try_fmt,
623 .init_videobuf = mx1_camera_init_videobuf,
624 .reqbufs = mx1_camera_reqbufs,
625 .poll = mx1_camera_poll,
626 .querycap = mx1_camera_querycap,
629 static struct fiq_handler fh = {
633 static int __init mx1_camera_probe(struct platform_device *pdev)
635 struct mx1_camera_dev *pcdev;
636 struct resource *res;
643 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
644 irq = platform_get_irq(pdev, 0);
650 clk = clk_get(&pdev->dev, "csi_clk");
656 pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
658 dev_err(&pdev->dev, "Could not allocate pcdev\n");
666 pcdev->pdata = pdev->dev.platform_data;
669 pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
673 "mclk_10khz == 0! Please, fix your platform data. "
674 "Using default 20MHz\n");
675 pcdev->mclk = 20000000;
678 INIT_LIST_HEAD(&pcdev->capture);
679 spin_lock_init(&pcdev->lock);
682 * Request the regions.
684 if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) {
689 base = ioremap(res->start, resource_size(res));
698 pcdev->dma_chan = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_HIGH);
699 if (pcdev->dma_chan < 0) {
700 dev_err(&pdev->dev, "Can't request DMA for MX1 CSI\n");
704 dev_dbg(&pdev->dev, "got DMA channel %d\n", pcdev->dma_chan);
706 imx_dma_setup_handlers(pcdev->dma_chan, mx1_camera_dma_irq, NULL,
709 imx_dma_config_channel(pcdev->dma_chan, IMX_DMA_TYPE_FIFO,
710 IMX_DMA_MEMSIZE_32, DMA_REQ_CSI_R, 0);
711 /* burst length : 16 words = 64 bytes */
712 imx_dma_config_burstlen(pcdev->dma_chan, 0);
715 err = claim_fiq(&fh);
717 dev_err(&pdev->dev, "Camera interrupt register failed \n");
721 set_fiq_handler(&mx1_camera_sof_fiq_start, &mx1_camera_sof_fiq_end -
722 &mx1_camera_sof_fiq_start);
724 regs.ARM_r8 = DMA_BASE + DMA_DIMR;
725 regs.ARM_r9 = DMA_BASE + DMA_CCR(pcdev->dma_chan);
726 regs.ARM_r10 = (long)pcdev->base + CSICR1;
727 regs.ARM_fp = (long)pcdev->base + CSISR;
728 regs.ARM_sp = 1 << pcdev->dma_chan;
731 mxc_set_irq_fiq(irq, 1);
734 pcdev->soc_host.drv_name = DRIVER_NAME;
735 pcdev->soc_host.ops = &mx1_soc_camera_host_ops;
736 pcdev->soc_host.priv = pcdev;
737 pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
738 pcdev->soc_host.nr = pdev->id;
739 err = soc_camera_host_register(&pcdev->soc_host);
743 dev_info(&pdev->dev, "MX1 Camera driver loaded\n");
749 mxc_set_irq_fiq(irq, 0);
752 imx_dma_free(pcdev->dma_chan);
756 release_mem_region(res->start, resource_size(res));
765 static int __exit mx1_camera_remove(struct platform_device *pdev)
767 struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
768 struct mx1_camera_dev *pcdev = container_of(soc_host,
769 struct mx1_camera_dev, soc_host);
770 struct resource *res;
772 imx_dma_free(pcdev->dma_chan);
773 disable_fiq(pcdev->irq);
774 mxc_set_irq_fiq(pcdev->irq, 0);
779 soc_camera_host_unregister(soc_host);
781 iounmap(pcdev->base);
784 release_mem_region(res->start, resource_size(res));
788 dev_info(&pdev->dev, "MX1 Camera driver unloaded\n");
793 static struct platform_driver mx1_camera_driver = {
797 .remove = __exit_p(mx1_camera_remove),
800 static int __init mx1_camera_init(void)
802 return platform_driver_probe(&mx1_camera_driver, mx1_camera_probe);
805 static void __exit mx1_camera_exit(void)
807 return platform_driver_unregister(&mx1_camera_driver);
810 module_init(mx1_camera_init);
811 module_exit(mx1_camera_exit);
813 MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver");
814 MODULE_AUTHOR("Paulius Zaleckas <paulius.zaleckas@teltonika.lt>");
815 MODULE_LICENSE("GPL v2");
816 MODULE_ALIAS("platform:" DRIVER_NAME);