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Re: [PATCH 07/07] sh_mobile_ceu_camera: Add SuperH Mobile CEU driver
- Date: Tue, 1 Jul 2008 22:07:26 +0200 (CEST)
- From: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
- Subject: Re: [PATCH 07/07] sh_mobile_ceu_camera: Add SuperH Mobile CEU driver
On Tue, 1 Jul 2008, Magnus Damm wrote:
> This patch adds support for the SuperH Mobile CEU interface.
>
> The hardware is configured in a transparent data fetch mode,
> and frames are captured from the attached camera and written
> to physically contiguous memory buffers provided by the
> videobuf-dma-contig queue.
>
> Signed-off-by: Magnus Damm <damm@xxxxxxxxxx>
Great to see new soc-camera host drivers! Just out of curiousity - can you
tell us, with which camera drivers you tested / used it?
Thanks
Guennadi
> ---
>
> drivers/media/video/Kconfig | 8
> drivers/media/video/Makefile | 1
> drivers/media/video/sh_mobile_ceu_camera.c | 622 ++++++++++++++++++++++++++++
> include/asm-sh/sh_mobile_ceu.h | 10
> 4 files changed, 641 insertions(+)
>
> --- 0009/drivers/media/video/Kconfig
> +++ work/drivers/media/video/Kconfig 2008-07-01 18:28:21.000000000 +0900
> @@ -948,4 +948,12 @@ config VIDEO_PXA27x
> ---help---
> This is a v4l2 driver for the PXA27x Quick Capture Interface
>
> +config VIDEO_SH_MOBILE_CEU
> + tristate "SuperH Mobile CEU Interface driver"
> + depends on VIDEO_DEV && SUPERH
> + select SOC_CAMERA
> + select VIDEOBUF_DMA_CONTIG
> + ---help---
> + This is a v4l2 driver for the SuperH Mobile CEU Interface
> +
> endif # VIDEO_CAPTURE_DRIVERS
> --- 0009/drivers/media/video/Makefile
> +++ work/drivers/media/video/Makefile 2008-07-01 18:28:21.000000000 +0900
> @@ -131,6 +131,7 @@ obj-$(CONFIG_VIDEO_VIVI) += vivi.o
> obj-$(CONFIG_VIDEO_CX23885) += cx23885/
>
> obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
> +obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
> obj-$(CONFIG_SOC_CAMERA) += soc_camera.o
> obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
> obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o
> --- /dev/null
> +++ work/drivers/media/video/sh_mobile_ceu_camera.c 2008-07-01 20:32:07.000000000 +0900
> @@ -0,0 +1,622 @@
> +/*
> + * V4L2 Driver for SuperH Mobile CEU interface
> + *
> + * Copyright (C) 2008 Magnus Damm
> + *
> + * Based on V4L2 Driver for PXA camera host - "pxa_camera.c",
> + *
> + * Copyright (C) 2006, Sascha Hauer, Pengutronix
> + * Copyright (C) 2008, Guennadi Liakhovetski <kernel@xxxxxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/io.h>
> +#include <linux/delay.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/errno.h>
> +#include <linux/fs.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mm.h>
> +#include <linux/moduleparam.h>
> +#include <linux/time.h>
> +#include <linux/version.h>
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/mutex.h>
> +
> +#include <media/v4l2-common.h>
> +#include <media/v4l2-dev.h>
> +#include <media/soc_camera.h>
> +#include <media/videobuf-dma-contig.h>
> +
> +#include <linux/videodev2.h>
> +
> +#include <asm/sh_mobile_ceu.h>
> +
> +/* register offsets for sh7722 / sh7723 */
> +
> +#define CAPSR 0x00
> +#define CAPCR 0x04
> +#define CAMCR 0x08
> +#define CMCYR 0x0c
> +#define CAMOR 0x10
> +#define CAPWR 0x14
> +#define CAIFR 0x18
> +#define CSTCR 0x20 /* not on sh7723 */
> +#define CSECR 0x24 /* not on sh7723 */
> +#define CRCNTR 0x28
> +#define CRCMPR 0x2c
> +#define CFLCR 0x30
> +#define CFSZR 0x34
> +#define CDWDR 0x38
> +#define CDAYR 0x3c
> +#define CDACR 0x40
> +#define CDBYR 0x44
> +#define CDBCR 0x48
> +#define CBDSR 0x4c
> +#define CFWCR 0x5c
> +#define CLFCR 0x60
> +#define CDOCR 0x64
> +#define CDDCR 0x68
> +#define CDDAR 0x6c
> +#define CEIER 0x70
> +#define CETCR 0x74
> +#define CSTSR 0x7c
> +#define CSRTR 0x80
> +#define CDSSR 0x84
> +#define CDAYR2 0x90
> +#define CDACR2 0x94
> +#define CDBYR2 0x98
> +#define CDBCR2 0x9c
> +
> +static DEFINE_MUTEX(camera_lock);
> +
> +/* per video frame buffer */
> +struct sh_mobile_ceu_buffer {
> + struct videobuf_buffer vb; /* v4l buffer must be first */
> + const struct soc_camera_data_format *fmt;
> +};
> +
> +struct sh_mobile_ceu_dev {
> + struct device *dev;
> + struct soc_camera_host ici;
> + struct soc_camera_device *icd;
> +
> + unsigned int irq;
> + void __iomem *base;
> +
> + spinlock_t lock;
> + struct list_head capture;
> + struct videobuf_buffer *active;
> +
> + struct sh_mobile_ceu_info *pdata;
> +};
> +
> +static unsigned int vid_limit = 4; /* Video memory limit, in Mb */
> +
> +static void ceu_write(struct sh_mobile_ceu_dev *priv,
> + unsigned long reg_offs, unsigned long data)
> +{
> + iowrite32(data, priv->base + reg_offs);
> +}
> +
> +static unsigned long ceu_read(struct sh_mobile_ceu_dev *priv,
> + unsigned long reg_offs)
> +{
> + return ioread32(priv->base + reg_offs);
> +}
> +
> +/*
> + * Videobuf operations
> + */
> +static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq,
> + unsigned int *count,
> + unsigned int *size)
> +{
> + struct soc_camera_device *icd = vq->priv_data;
> + int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3;
> +
> + *size = PAGE_ALIGN(icd->width * icd->height * bytes_per_pixel);
> +
> + if (0 == *count)
> + *count = 2;
> + while (*size * *count > vid_limit * 1024 * 1024)
> + (*count)--;
> +
> + dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
> +
> + return 0;
> +}
> +
> +static void free_buffer(struct videobuf_queue *vq,
> + struct sh_mobile_ceu_buffer *buf)
> +{
> + struct soc_camera_device *icd = vq->priv_data;
> +
> + dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
> + &buf->vb, buf->vb.baddr, buf->vb.bsize);
> +
> + if (in_interrupt())
> + BUG();
> +
> + videobuf_dma_contig_free(vq, &buf->vb);
> + dev_dbg(&icd->dev, "%s freed\n", __func__);
> + buf->vb.state = VIDEOBUF_NEEDS_INIT;
> +}
> +
> +static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
> +{
> + struct videobuf_dma_contig_memory *mem;
> +
> + ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~1);
> + ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & 0x0317f313);
> + ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | 1);
> +
> + ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~0x10000);
> +
> + ceu_write(pcdev, CETCR, 0x0317f313 ^ 0x10);
> +
> + if (pcdev->active) {
> + mem = videobuf_to_dma_contig(pcdev->active);
> +
> + ceu_write(pcdev, CDAYR, mem->dma_handle);
> + ceu_write(pcdev, CAPSR, 0x1); /* start capture */
> + }
> +}
> +
> +static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
> + struct videobuf_buffer *vb,
> + enum v4l2_field field)
> +{
> + struct soc_camera_device *icd = vq->priv_data;
> + struct sh_mobile_ceu_buffer *buf;
> + int ret;
> +
> + buf = container_of(vb, struct sh_mobile_ceu_buffer, vb);
> +
> + dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
> + vb, vb->baddr, vb->bsize);
> +
> + /* Added list head initialization on alloc */
> + WARN_ON(!list_empty(&vb->queue));
> +
> +#ifdef DEBUG
> + /* This can be useful if you want to see if we actually fill
> + * the buffer with something */
> + memset((void *)vb->baddr, 0xaa, vb->bsize);
> +#endif
> +
> + BUG_ON(NULL == icd->current_fmt);
> +
> + if (buf->fmt != icd->current_fmt ||
> + vb->width != icd->width ||
> + vb->height != icd->height ||
> + vb->field != field) {
> + buf->fmt = icd->current_fmt;
> + vb->width = icd->width;
> + vb->height = icd->height;
> + vb->field = field;
> + vb->state = VIDEOBUF_NEEDS_INIT;
> + }
> +
> + vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3);
> + if (0 != vb->baddr && vb->bsize < vb->size) {
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + if (vb->state == VIDEOBUF_NEEDS_INIT) {
> + ret = videobuf_iolock(vq, vb, NULL);
> + if (ret)
> + goto fail;
> + vb->state = VIDEOBUF_PREPARED;
> + }
> +
> + return 0;
> +fail:
> + free_buffer(vq, buf);
> +out:
> + return ret;
> +}
> +
> +static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
> + struct videobuf_buffer *vb)
> +{
> + struct soc_camera_device *icd = vq->priv_data;
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> + unsigned long flags;
> +
> + dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
> + vb, vb->baddr, vb->bsize);
> +
> + vb->state = VIDEOBUF_ACTIVE;
> + spin_lock_irqsave(&pcdev->lock, flags);
> + list_add_tail(&vb->queue, &pcdev->capture);
> +
> + if (!pcdev->active) {
> + pcdev->active = vb;
> + sh_mobile_ceu_capture(pcdev);
> + }
> +
> + spin_unlock_irqrestore(&pcdev->lock, flags);
> +}
> +
> +static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq,
> + struct videobuf_buffer *vb)
> +{
> + free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb));
> +}
> +
> +static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = {
> + .buf_setup = sh_mobile_ceu_videobuf_setup,
> + .buf_prepare = sh_mobile_ceu_videobuf_prepare,
> + .buf_queue = sh_mobile_ceu_videobuf_queue,
> + .buf_release = sh_mobile_ceu_videobuf_release,
> +};
> +
> +static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
> +{
> + struct sh_mobile_ceu_dev *pcdev = data;
> + struct videobuf_buffer *vb;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&pcdev->lock, flags);
> +
> + vb = pcdev->active;
> + list_del_init(&vb->queue);
> +
> + if (!list_empty(&pcdev->capture))
> + pcdev->active = list_entry(pcdev->capture.next,
> + struct videobuf_buffer, queue);
> + else
> + pcdev->active = NULL;
> +
> + sh_mobile_ceu_capture(pcdev);
> +
> + vb->state = VIDEOBUF_DONE;
> + do_gettimeofday(&vb->ts);
> + vb->field_count++;
> + wake_up(&vb->done);
> + spin_unlock_irqrestore(&pcdev->lock, flags);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
> +{
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> + int ret = -EBUSY;
> +
> + mutex_lock(&camera_lock);
> +
> + if (pcdev->icd)
> + goto err;
> +
> + dev_info(&icd->dev,
> + "SuperH Mobile CEU driver attached to camera %d\n",
> + icd->devnum);
> +
> + ret = icd->ops->init(icd);
> + if (ret)
> + goto err;
> +
> + ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
> + while (ceu_read(pcdev, CSTSR) & 1)
> + msleep(1);
> +
> + pcdev->icd = icd;
> +err:
> + mutex_unlock(&camera_lock);
> +
> + return ret;
> +}
> +
> +static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
> +{
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> +
> + BUG_ON(icd != pcdev->icd);
> +
> + dev_info(&icd->dev,
> + "SuperH Mobile CEU driver detached from camera %d\n",
> + icd->devnum);
> +
> + /* disable capture, disable interrupts */
> + ceu_write(pcdev, CEIER, 0);
> + ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
> + icd->ops->release(icd);
> + pcdev->icd = NULL;
> +}
> +
> +static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
> + __u32 pixfmt)
> +{
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> + int ret, buswidth, width, cfszr_width, cdwdr_width;
> + unsigned long camera_flags, common_flags, value;
> +
> + camera_flags = icd->ops->query_bus_param(icd);
> + common_flags = soc_camera_bus_param_compatible(camera_flags,
> + pcdev->pdata->flags);
> + if (!common_flags)
> + return -EINVAL;
> +
> + ret = icd->ops->set_bus_param(icd, common_flags);
> + if (ret < 0)
> + return ret;
> +
> + switch (common_flags & SOCAM_DATAWIDTH_MASK) {
> + case SOCAM_DATAWIDTH_8: buswidth = 8; break;
> + case SOCAM_DATAWIDTH_16: buswidth = 16; break;
> + default: return -EINVAL;
> + }
> +
> + ceu_write(pcdev, CRCNTR, 0);
> + ceu_write(pcdev, CRCMPR, 0);
> +
> + value = 0x00000010;
> + value |= (common_flags & SOCAM_VSYNC_ACTIVE_LOW) ? (1 << 1) : 0;
> + value |= (common_flags & SOCAM_HSYNC_ACTIVE_LOW) ? (1 << 0) : 0;
> + value |= (buswidth == 16) ? (1 << 12) : 0;
> + ceu_write(pcdev, CAMCR, value);
> +
> + ceu_write(pcdev, CAPCR, 0x00300000);
> + ceu_write(pcdev, CAIFR, 0);
> +
> + mdelay(1);
> +
> + width = icd->width * (icd->current_fmt->depth / 8);
> + width = (buswidth == 16) ? width / 2 : width;
> + cfszr_width = (buswidth == 8) ? width / 2 : width;
> + cdwdr_width = (buswidth == 16) ? width * 2 : width;
> +
> + ceu_write(pcdev, CAMOR, 0);
> + ceu_write(pcdev, CAPWR, (icd->height << 16) | width);
> + ceu_write(pcdev, CFLCR, 0); /* data fetch mode - no scaling */
> + ceu_write(pcdev, CFSZR, (icd->height << 16) | cfszr_width);
> + ceu_write(pcdev, CLFCR, 0); /* data fetch mode - no lowpass filter */
> + ceu_write(pcdev, CDOCR, 0x00000016);
> +
> + ceu_write(pcdev, CDWDR, cdwdr_width);
> + ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */
> +
> + /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */
> + /* in data fetch mode: no need for CDACR, CDBYR, CDBCR */
> +
> + return 0;
> +}
> +
> +static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd,
> + __u32 pixfmt)
> +{
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> + unsigned long camera_flags, common_flags;
> +
> + camera_flags = icd->ops->query_bus_param(icd);
> + common_flags = soc_camera_bus_param_compatible(camera_flags,
> + pcdev->pdata->flags);
> + if (!common_flags)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static int sh_mobile_ceu_set_fmt_cap(struct soc_camera_device *icd,
> + __u32 pixfmt, struct v4l2_rect *rect)
> +{
> + return icd->ops->set_fmt_cap(icd, pixfmt, rect);
> +}
> +
> +static int sh_mobile_ceu_try_fmt_cap(struct soc_camera_device *icd,
> + struct v4l2_format *f)
> +{
> + /* FIXME: calculate using depth and bus width */
> +
> + if (f->fmt.pix.height < 4)
> + f->fmt.pix.height = 4;
> + if (f->fmt.pix.height > 1920)
> + f->fmt.pix.height = 1920;
> + if (f->fmt.pix.width < 2)
> + f->fmt.pix.width = 2;
> + if (f->fmt.pix.width > 2560)
> + f->fmt.pix.width = 2560;
> + f->fmt.pix.width &= ~0x01;
> + f->fmt.pix.height &= ~0x03;
> +
> + /* limit to sensor capabilities */
> + return icd->ops->try_fmt_cap(icd, f);
> +}
> +
> +static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf,
> + struct v4l2_requestbuffers *p)
> +{
> + int i;
> +
> + /* This is for locking debugging only. I removed spinlocks and now I
> + * check whether .prepare is ever called on a linked buffer, or whether
> + * a dma IRQ can occur for an in-work or unlinked buffer. Until now
> + * it hadn't triggered */
> + for (i = 0; i < p->count; i++) {
> + struct sh_mobile_ceu_buffer *buf;
> +
> + buf = container_of(icf->vb_vidq.bufs[i],
> + struct sh_mobile_ceu_buffer, vb);
> + INIT_LIST_HEAD(&buf->vb.queue);
> + }
> +
> + return 0;
> +}
> +
> +static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt)
> +{
> + struct soc_camera_file *icf = file->private_data;
> + struct sh_mobile_ceu_buffer *buf;
> +
> + buf = list_entry(icf->vb_vidq.stream.next,
> + struct sh_mobile_ceu_buffer, vb.stream);
> +
> + poll_wait(file, &buf->vb.done, pt);
> +
> + if (buf->vb.state == VIDEOBUF_DONE ||
> + buf->vb.state == VIDEOBUF_ERROR)
> + return POLLIN|POLLRDNORM;
> +
> + return 0;
> +}
> +
> +static int sh_mobile_ceu_querycap(struct soc_camera_host *ici,
> + struct v4l2_capability *cap)
> +{
> + strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card));
> + cap->version = KERNEL_VERSION(0, 0, 5);
> + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
> + return 0;
> +}
> +
> +static int sh_mobile_ceu_file_alloc(struct soc_camera_file *icf)
> +{
> + struct soc_camera_host *ici = to_soc_camera_host(icf->icd->dev.parent);
> + struct sh_mobile_ceu_dev *pcdev = ici->priv;
> +
> + videobuf_queue_dma_contig_init(&icf->vb_vidq,
> + &sh_mobile_ceu_videobuf_ops,
> + &ici->dev, &pcdev->lock,
> + V4L2_BUF_TYPE_VIDEO_CAPTURE,
> + V4L2_FIELD_NONE,
> + sizeof(struct sh_mobile_ceu_buffer),
> + icf->icd);
> + return 0;
> +}
> +
> +static struct soc_camera_host_ops sh_mobile_ceu_host_ops = {
> + .owner = THIS_MODULE,
> + .add = sh_mobile_ceu_add_device,
> + .remove = sh_mobile_ceu_remove_device,
> + .set_fmt_cap = sh_mobile_ceu_set_fmt_cap,
> + .try_fmt_cap = sh_mobile_ceu_try_fmt_cap,
> + .reqbufs = sh_mobile_ceu_reqbufs,
> + .poll = sh_mobile_ceu_poll,
> + .querycap = sh_mobile_ceu_querycap,
> + .try_bus_param = sh_mobile_ceu_try_bus_param,
> + .set_bus_param = sh_mobile_ceu_set_bus_param,
> + .file_alloc = sh_mobile_ceu_file_alloc,
> +};
> +
> +static int sh_mobile_ceu_probe(struct platform_device *pdev)
> +{
> + struct sh_mobile_ceu_dev *pcdev;
> + struct resource *res;
> + void __iomem *base;
> + unsigned int irq;
> + int err = 0;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + irq = platform_get_irq(pdev, 0);
> + if (!res || !irq) {
> + err = -ENODEV;
> + goto exit;
> + }
> +
> + pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
> + if (!pcdev) {
> + dev_err(&pdev->dev, "Could not allocate pcdev\n");
> + err = -ENOMEM;
> + goto exit;
> + }
> +
> + platform_set_drvdata(pdev, pcdev);
> + INIT_LIST_HEAD(&pcdev->capture);
> + spin_lock_init(&pcdev->lock);
> +
> + pcdev->pdata = pdev->dev.platform_data;
> + if (!pcdev->pdata) {
> + err = -EINVAL;
> + goto exit_kfree;
> + }
> +
> + base = ioremap_nocache(res->start, res->end - res->start + 1);
> + if (!base) {
> + err = -ENXIO;
> + goto exit_kfree;
> + }
> + pcdev->irq = irq;
> + pcdev->base = base;
> + pcdev->dev = &pdev->dev;
> +
> + /* request irq */
> + err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED,
> + pdev->dev.bus_id, pcdev);
> + if (err) {
> + dev_err(pcdev->dev, "Camera interrupt register failed \n");
> + goto exit_iounmap;
> + }
> +
> + pcdev->ici.priv = pcdev;
> + pcdev->ici.dev.parent = &pdev->dev;
> + pcdev->ici.nr = pdev->id;
> + pcdev->ici.drv_name = pdev->dev.bus_id,
> + pcdev->ici.ops = &sh_mobile_ceu_host_ops,
> +
> + err = soc_camera_host_register(&pcdev->ici);
> + if (err)
> + goto exit_free_irq;
> +
> + return 0;
> +
> +exit_free_irq:
> + free_irq(pcdev->irq, pcdev);
> +exit_iounmap:
> + iounmap(base);
> +exit_kfree:
> + kfree(pcdev);
> +exit:
> + return err;
> +}
> +
> +static int sh_mobile_ceu_remove(struct platform_device *pdev)
> +{
> + struct sh_mobile_ceu_dev *pcdev = platform_get_drvdata(pdev);
> +
> + soc_camera_host_unregister(&pcdev->ici);
> + free_irq(pcdev->irq, pcdev);
> + iounmap(pcdev->base);
> + kfree(pcdev);
> + return 0;
> +}
> +
> +static struct platform_driver sh_mobile_ceu_driver = {
> + .driver = {
> + .name = "sh_mobile_ceu",
> + },
> + .probe = sh_mobile_ceu_probe,
> + .remove = sh_mobile_ceu_remove,
> +};
> +
> +static int __init sh_mobile_ceu_init(void)
> +{
> + return platform_driver_register(&sh_mobile_ceu_driver);
> +}
> +
> +static void __exit sh_mobile_ceu_exit(void)
> +{
> + return platform_driver_unregister(&sh_mobile_ceu_driver);
> +}
> +
> +module_init(sh_mobile_ceu_init);
> +module_exit(sh_mobile_ceu_exit);
> +
> +MODULE_DESCRIPTION("SuperH Mobile CEU driver");
> +MODULE_AUTHOR("Magnus Damm");
> +MODULE_LICENSE("GPL");
> --- /dev/null
> +++ work/include/asm-sh/sh_mobile_ceu.h 2008-07-01 18:28:21.000000000 +0900
> @@ -0,0 +1,10 @@
> +#ifndef __ASM_SH_MOBILE_CEU_H__
> +#define __ASM_SH_MOBILE_CEU_H__
> +
> +#include <media/soc_camera.h>
> +
> +struct sh_mobile_ceu_info {
> + unsigned long flags; /* SOCAM_... */
> +};
> +
> +#endif /* __ASM_SH_MOBILE_CEU_H__ */
>
> --
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---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
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