Hi
On Mon, 30 May 2011, Kassey Lee wrote:
> This patch is to enable Marvell Mobile SoC PXA910 CMOS Cmera Interface
> Controller driver support.
> - Using soc-camera framework with videobuf2 dma-contig allocator
> - Supporting video streaming of YUV packed format
> - Tested on PXA910 TTC_DKB board with OV5642
>
> hi, Guennadi, Hans,
> as you suggested to prefer improved videobuf2, we converted
> the Marvell SoC PXA910 CCIC driver from videobuf to videobuf2, and
> verified OK. would you please help to review ?
> thanks!
Review is in work, will try to finish it within the next couple of days.
Thanks
Guennadi
>
>
>
> 2011/5/27 Kassey Lee <y...@marvell.com>:
> > This driver exports a video device node per each CCIC
> > (CMOS Camera Interface Controller)
> > device contained in Marvell Mobile PXA910 SoC
> > The driver is based on v4l2-mem2mem framework, and only
> > USERPTR is supported.
> >
> > Signed-off-by: Kassey Lee <y...@marvell.com>
> > ---
> > arch/arm/mach-mmp/include/mach/camera.h | 33 +
> > drivers/media/video/Kconfig | 7 +
> > drivers/media/video/Makefile | 1 +
> > drivers/media/video/mv_camera.c | 1120
> > +++++++++++++++++++++++++++++++
> > 4 files changed, 1161 insertions(+), 0 deletions(-)
> > create mode 100644 arch/arm/mach-mmp/include/mach/camera.h
> > create mode 100644 drivers/media/video/mv_camera.c
> >
> > diff --git a/arch/arm/mach-mmp/include/mach/camera.h
> > b/arch/arm/mach-mmp/include/mach/camera.h
> > new file mode 100644
> > index 0000000..b008f3f
> > --- /dev/null
> > +++ b/arch/arm/mach-mmp/include/mach/camera.h
> > @@ -0,0 +1,33 @@
> > +/*
> > + * Copyright (C) 2011, Marvell International Ltd.
> > + * Kassey Lee <y...@marvell.com>
> > + * Angela Wan <j...@marvell.com>
> > + * Lei Wen <lei...@marvell.com>
> > + *
> > + * 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.
> > + *
> > + */
> > +
> > +#ifndef __ASM_ARCH_CAMERA_H__
> > +#define __ASM_ARCH_CAMERA_H__
> > +
> > +#define MAX_CAM_CLK 3
> > +struct mv_cam_pdata {
> > + struct clk *clk[MAX_CAM_CLK];
> > + char *name;
> > + int clk_enabled;
> > + int dphy[3];
> > + int bus_type;
> > + int dma_burst;
> > + int qos_req_min;
> > + int mclk_min;
> > + int mclk_src;
> > + int (*clk_init) (struct device *dev, int init);
> > + void (*set_clock) (struct device *dev, int on);
> > + int (*get_mclk_src) (int src);
> > +};
> > +
> > +#endif
> > diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
> > index 3be180b..3b7a70e 100644
> > --- a/drivers/media/video/Kconfig
> > +++ b/drivers/media/video/Kconfig
> > @@ -891,6 +891,13 @@ config VIDEO_MX3
> > ---help---
> > This is a v4l2 driver for the i.MX3x Camera Sensor Interface
> >
> > +config VIDEO_MV
> > + tristate "Marvell CMOS Camera Interface Controller driver"
> > + depends on VIDEO_DEV && CPU_PXA910 && SOC_CAMERA
> > + select VIDEOBUF2_DMA_CONTIG
> > + ---help---
> > + This is a v4l2 driver for the Marvell CCIC Interface
> > +
> > config VIDEO_PXA27x
> > tristate "PXA27x Quick Capture Interface driver"
> > depends on VIDEO_DEV && PXA27x && SOC_CAMERA
> > diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
> > index 9519160..373b706 100644
> > --- a/drivers/media/video/Makefile
> > +++ b/drivers/media/video/Makefile
> > @@ -161,6 +161,7 @@ obj-$(CONFIG_SOC_CAMERA_PLATFORM) +=
> > soc_camera_platform.o
> > obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o
> > obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o
> > obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o
> > +obj-$(CONFIG_VIDEO_MV) += mv_camera.o
> > obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
> > obj-$(CONFIG_VIDEO_SH_MOBILE_CSI2) += sh_mobile_csi2.o
> > obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
> > diff --git a/drivers/media/video/mv_camera.c
> > b/drivers/media/video/mv_camera.c
> > new file mode 100644
> > index 0000000..1a8f73e
> > --- /dev/null
> > +++ b/drivers/media/video/mv_camera.c
> > @@ -0,0 +1,1120 @@
> > +/*
> > + * V4L2 Driver for Marvell Mobile SoC PXA910 CCIC
> > + * (CMOS Capture Interface Controller)
> > + *
> > + * Copyright (C) 2011, Marvell International Ltd.
> > + * Kassey Lee <y...@marvell.com>
> > + * Angela Wan <j...@marvell.com>
> > + * Lei Wen <lei...@marvell.com>
> > + *
> > + * 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/time.h>
> > +#include <linux/device.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/clk.h>
> > +#include <linux/slab.h>
> > +#include <linux/videodev2.h>
> > +
> > +#include <media/v4l2-common.h>
> > +#include <media/v4l2-dev.h>
> > +#include <media/videobuf2-dma-contig.h>
> > +#include <media/soc_camera.h>
> > +#include <media/soc_mediabus.h>
> > +
> > +#include <mach/camera.h>
> > +#include "cafe_ccic-regs.h"
> > +
> > +/* Register definition for PXA910 */
> > +
> > +#define REG_U0BAR 0x0c
> > +#define REG_U1BAR 0x10
> > +#define REG_U2BAR 0x14
> > +#define REG_V0BAR 0x18
> > +#define REG_V1BAR 0x1C
> > +#define REG_V2BAR 0x20
> > +
> > +/* for MIPI enable */
> > +#define REG_CSI2_CTRL0 0x100
> > +#define REG_CSI2_DPHY0 0x120
> > +#define REG_CSI2_DPHY1 0x124
> > +#define REG_CSI2_DPHY2 0x128
> > +#define REG_CSI2_DPHY3 0x12c
> > +#define REG_CSI2_DPHY4 0x130
> > +#define REG_CSI2_DPHY5 0x134
> > +#define REG_CSI2_DPHY6 0x138
> > +/* REG_CTRL0 */
> > +#define CO_EOF_VSYNC (1 << 22) /*generate eof by VSYNC */
> > +#define C0_VEDGE_CTRL (1 << 23) /*VYSNC polarity */
> > +/* IRQ FLAG */
> > +#define FRAMEIRQS_EOF (IRQ_EOF0|IRQ_EOF1|IRQ_EOF2 |
> > IRQ_OVERFLOW)
> > +
> > +#define MV_CAM_DRV_NAME "mv-camera"
> > +
> > +#define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \
> > + ((x) >> 24) & 0xff
> > +
> > +static int dma_buf_size = 480 * 720 * 2; /* D1 size */
> > +
> > +struct yuv_pointer_t {
> > + dma_addr_t y;
> > + dma_addr_t u;
> > + dma_addr_t v;
> > +};
> > +
> > +/* buffer for one video frame */
> > +struct mv_buffer {
> > + /* common v4l buffer stuff -- must be first */
> > + struct vb2_buffer vb;
> > + struct yuv_pointer_t yuv_p;
> > + dma_addr_t dma_handles;
> > + struct list_head queue;
> > + size_t bsize;
> > +};
> > +
> > +struct mv_camera_dev {
> > + struct soc_camera_host soc_host;
> > +
> > + struct soc_camera_device *icd;
> > + unsigned int irq;
> > + void __iomem *base;
> > +
> > + struct platform_device *pdev;
> > + struct resource *res;
> > +
> > + struct list_head capture;
> > + struct list_head sb_dma; /* dma list (dev_lock) */
> > +
> > + spinlock_t list_lock;
> > + struct v4l2_pix_format pix_format;
> > + /*
> > + * internal use only
> > + * dummy buffer is used when available
> > + * buffer for DMA is less than 3
> > + */
> > + void *dummy_buf_virt;
> > + dma_addr_t dummy_buf_phy;
> > +
> > + unsigned int width;
> > + unsigned int height;
> > +};
> > +
> > +/*
> > + * Device register I/O
> > + */
> > +static inline void ccic_reg_write(struct mv_camera_dev *pcdev,
> > + unsigned int reg, unsigned int val)
> > +{
> > + iowrite32(val, pcdev->base + reg);
> > +}
> > +
> > +static inline unsigned int ccic_reg_read(struct mv_camera_dev *pcdev,
> > + unsigned int reg)
> > +{
> > + return ioread32(pcdev->base + reg);
> > +}
> > +
> > +static inline void ccic_reg_write_mask(struct mv_camera_dev *pcdev,
> > + unsigned int reg, unsigned int val,
> > + unsigned int mask)
> > +{
> > + unsigned int v = ccic_reg_read(pcdev, reg);
> > +
> > + v = (v & ~mask) | (val & mask);
> > + ccic_reg_write(pcdev, reg, v);
> > +}
> > +
> > +static inline void ccic_reg_clear_bit(struct mv_camera_dev *pcdev,
> > + unsigned int reg, unsigned int val)
> > +{
> > + ccic_reg_write_mask(pcdev, reg, 0, val);
> > +}
> > +
> > +static inline void ccic_reg_set_bit(struct mv_camera_dev *pcdev,
> > + unsigned int reg, unsigned int val)
> > +{
> > + ccic_reg_write_mask(pcdev, reg, val, val);
> > +}
> > +
> > +static void ccic_set_clock(struct mv_camera_dev *pcdev, unsigned int reg,
> > + unsigned int val)
> > +{
> > + ccic_reg_write(pcdev, reg, val);
> > +}
> > +
> > +static int ccic_enable_clk(struct mv_camera_dev *pcdev)
> > +{
> > + struct mv_cam_pdata *mcam = pcdev->pdev->dev.platform_data;
> > + int div, ctrl1;
> > +
> > + mcam->set_clock(&pcdev->pdev->dev, 1);
> > + div = mcam->get_mclk_src(mcam->mclk_src) / mcam->mclk_min;
> > + ccic_set_clock(pcdev, REG_CLKCTRL, (mcam->mclk_src << 29 | div));
> > + ctrl1 = 0x800003c;
> > + switch (mcam->dma_burst) {
> > + case 128:
> > + ctrl1 |= 1 << 25;
> > + break;
> > + case 256:
> > + ctrl1 |= 2 << 25;
> > + break;
> > + }
> > + ccic_set_clock(pcdev, REG_CTRL1, ctrl1);
> > + if (mcam->bus_type != SOCAM_MIPI)
> > + ccic_set_clock(pcdev, 0x1ec, 0x00004);
> > +
> > + return 0;
> > +}
> > +
> > +static void ccic_disable_clk(struct mv_camera_dev *pcdev)
> > +{
> > + struct mv_cam_pdata *mcam = pcdev->pdev->dev.platform_data;
> > +
> > + mcam->set_clock(&pcdev->pdev->dev, 0);
> > + ccic_set_clock(pcdev, REG_CLKCTRL, 0x0);
> > + ccic_set_clock(pcdev, REG_CTRL1, 0x0);
> > +}
> > +
> > +static int ccic_config_image(struct mv_camera_dev *pcdev)
> > +{
> > + int ret = 0;
> > + int imgsz;
> > + unsigned int temp;
> > + struct v4l2_pix_format *fmt = &pcdev->pix_format;
> > + int widthy = 0, widthuv = 0;
> > + struct mv_cam_pdata *mcam = pcdev->pdev->dev.platform_data;
> > +
> > + dev_dbg(pcdev->soc_host.v4l2_dev.dev,
> > + KERN_ERR " %s %d bytesperline %d height %d\n", __func__,
> > + __LINE__, fmt->bytesperline,
> > + fmt->sizeimage / fmt->bytesperline);
> > + if (fmt->pixelformat == V4L2_PIX_FMT_YUV420) {
> > + imgsz =
> > + ((fmt->height << IMGSZ_V_SHIFT) & IMGSZ_V_MASK) |
> > + (((fmt->bytesperline)
> > + * 4 / 3) & IMGSZ_H_MASK);
> > + } else if (fmt->pixelformat == V4L2_PIX_FMT_JPEG) {
> > + imgsz =
> > + (((fmt->sizeimage /
> > + fmt->bytesperline) << IMGSZ_V_SHIFT) & IMGSZ_V_MASK)
> > |
> > + (fmt->bytesperline & IMGSZ_H_MASK);
> > +
> > + } else {
> > + imgsz =
> > + ((fmt->height << IMGSZ_V_SHIFT) & IMGSZ_V_MASK) |
> > + (fmt->bytesperline & IMGSZ_H_MASK);
> > + }
> > + switch (fmt->pixelformat) {
> > + case V4L2_PIX_FMT_YUYV:
> > + case V4L2_PIX_FMT_UYVY:
> > + widthy = fmt->width * 2;
> > + widthuv = fmt->width * 2;
> > + break;
> > + case V4L2_PIX_FMT_RGB565:
> > + widthy = fmt->width * 2;
> > + widthuv = 0;
> > + break;
> > + case V4L2_PIX_FMT_JPEG:
> > + widthy = fmt->bytesperline;
> > + widthuv = fmt->bytesperline;
> > + break;
> > + case V4L2_PIX_FMT_YUV422P:
> > + widthy = fmt->width;
> > + widthuv = fmt->width / 2;
> > + break;
> > + case V4L2_PIX_FMT_YUV420:
> > + widthy = fmt->width;
> > + widthuv = fmt->width / 2;
> > + break;
> > + default:
> > + break;
> > + }
> > +
> > + ccic_reg_write(pcdev, REG_IMGPITCH, widthuv << 16 | widthy);
> > + ccic_reg_write(pcdev, REG_IMGSIZE, imgsz);
> > + ccic_reg_write(pcdev, REG_IMGOFFSET, 0x0);
> > + /*
> > + * Tell the controller about the image format we are using.
> > + */
> > + switch (pcdev->pix_format.pixelformat) {
> > + case V4L2_PIX_FMT_YUV422P:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_YUV | C0_YUV_PLANAR |
> > + C0_YUVE_YVYU, C0_DF_MASK);
> > + break;
> > + case V4L2_PIX_FMT_YUV420:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_YUV | C0_YUV_420PL |
> > + C0_YUVE_YVYU, C0_DF_MASK);
> > + break;
> > +
> > + case V4L2_PIX_FMT_YUYV:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_YUV | C0_YUV_PACKED |
> > + C0_YUVE_YUYV, C0_DF_MASK);
> > + break;
> > + case V4L2_PIX_FMT_UYVY:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_YUV | C0_YUV_PACKED |
> > + C0_YUVE_UYVY, C0_DF_MASK);
> > + break;
> > + case V4L2_PIX_FMT_JPEG:
> > + if (mcam->bus_type == SOCAM_MIPI)
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_RGB | C0_RGB_BGR |
> > + C0_RGB4_BGRX, C0_DF_MASK);
> > + else
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_YUV | C0_YUV_PACKED |
> > + C0_YUVE_YUYV, C0_DF_MASK);
> > + break;
> > + case V4L2_PIX_FMT_RGB444:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_RGB | C0_RGBF_444 |
> > + C0_RGB4_XRGB, C0_DF_MASK);
> > + break;
> > +
> > + case V4L2_PIX_FMT_RGB565:
> > + ccic_reg_write_mask(pcdev, REG_CTRL0,
> > + C0_DF_RGB | C0_RGBF_565 |
> > + C0_RGB5_BGGR, C0_DF_MASK);
> > + break;
> > +
> > + default:
> > + dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Unknown format %x\n",
> > + pcdev->pix_format.pixelformat);
> > + break;
> > + }
> > + ccic_reg_write_mask(pcdev, REG_CTRL0, C0_SIF_HVSYNC, C0_SIFM_MASK);
> > + /*
> > + * This field controls the generation of EOF(DVP only)
> > + */
> > + if (mcam->bus_type != SOCAM_MIPI) {
> > + temp = ccic_reg_read(pcdev, REG_CTRL0);
> > + temp |= CO_EOF_VSYNC | C0_VEDGE_CTRL;
> > + ccic_reg_write(pcdev, REG_CTRL0, temp);
> > + }
> > +
> > + return ret;
> > +}
> > +
> > +static void ccic_irq_enable(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_write(pcdev, REG_IRQSTAT, FRAMEIRQS_EOF);
> > + ccic_reg_set_bit(pcdev, REG_IRQMASK, FRAMEIRQS_EOF);
> > +}
> > +
> > +static void ccic_irq_disable(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_clear_bit(pcdev, REG_IRQMASK, FRAMEIRQS_EOF);
> > +}
> > +
> > +static void ccic_start(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_set_bit(pcdev, REG_CTRL0, C0_ENABLE);
> > +}
> > +
> > +static void ccic_stop(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_clear_bit(pcdev, REG_CTRL0, C0_ENABLE);
> > +}
> > +
> > +void ccic_init(struct mv_camera_dev *pcdev)
> > +{
> > + /*
> > + * Make sure it's not powered down.
> > + */
> > + ccic_reg_clear_bit(pcdev, REG_CTRL1, C1_PWRDWN);
> > + /*
> > + * Turn off the enable bit. It sure should be off anyway,
> > + * but it's good to be sure.
> > + */
> > + ccic_reg_clear_bit(pcdev, REG_CTRL0, C0_ENABLE);
> > + /*
> > + * Mask all interrupts.
> > + */
> > + ccic_reg_write(pcdev, REG_IRQMASK, 0);
> > +}
> > +
> > +static void ccic_stop_dma(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_stop(pcdev);
> > + /*CSI2/DPHY need to be cleared, or no EOF will be received */
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY3, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY6, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY5, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x0);
> > + /*
> > + * workaround when stop DMA controller!!!
> > + * 1) ccic controller must be stopped first,
> > + * and it shoud delay for one frame transfer time at least
> > + * 2)and then stop the camera sensor's output
> > + *
> > + * FIXME! need sillcion to add DMA stop/start bit
> > + */
> > + ccic_irq_disable(pcdev);
> > + mdelay(200);
> > +}
> > +
> > +/*
> > +* Power up and down.
> > +*/
> > +void ccic_power_up(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_clear_bit(pcdev, REG_CTRL1, C1_PWRDWN);
> > +}
> > +
> > +static void ccic_power_down(struct mv_camera_dev *pcdev)
> > +{
> > + ccic_reg_set_bit(pcdev, REG_CTRL1, C1_PWRDWN);
> > +}
> > +
> > +static void ccic_config_phy(struct mv_camera_dev *pcdev)
> > +{
> > + struct mv_cam_pdata *mcam = pcdev->pdev->dev.platform_data;
> > +
> > + if (SOCAM_MIPI & mcam->bus_type) {
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY3, mcam->dphy[0]);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY6, mcam->dphy[2]);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY5, mcam->dphy[1]);
> > + ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x43);
> > + } else {
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY3, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY6, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_DPHY5, 0x0);
> > + ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x0);
> > + }
> > +}
> > +
> > +static int mv_videobuf_setup(struct vb2_queue *vq,
> > + unsigned int *count, unsigned int *num_planes,
> > + unsigned long sizes[], void *alloc_ctxs[])
> > +{
> > + struct soc_camera_device *icd =
> > + container_of(vq, struct soc_camera_device, vb2_vidq);
> > + int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
> > + icd->
> > + current_fmt->host_fmt);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > +
> > + if (bytes_per_line < 0)
> > + return bytes_per_line;
> > +
> > + *num_planes = 1;
> > + sizes[0] = bytes_per_line * icd->user_height;
> > +
> > + if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_JPEG) {
> > + sizes[0] = pcdev->pix_format.sizeimage;
> > + bytes_per_line = pcdev->pix_format.bytesperline;
> > + }
> > +
> > + dev_dbg(icd->dev.parent, "count=%d, size=%lu\n", *count, sizes[0]);
> > + return 0;
> > +}
> > +
> > +static int mv_videobuf_prepare(struct vb2_buffer *vb)
> > +{
> > + struct soc_camera_device *icd = container_of(vb->vb2_queue,
> > + struct
> > soc_camera_device,
> > + vb2_vidq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > + struct device *dev = pcdev->soc_host.v4l2_dev.dev;
> > + struct mv_buffer *buf = container_of(vb, struct mv_buffer, vb);
> > + unsigned long size;
> > + int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
> > + icd->
> > + current_fmt->host_fmt);
> > +
> > + dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb,
> > + vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
> > + if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_JPEG)
> > + bytes_per_line = pcdev->pix_format.bytesperline;
> > +
> > + if (bytes_per_line < 0)
> > + return bytes_per_line;
> > +
> > + if (vb2_plane_size(vb, 0) & 31) {
> > + dev_err(dev, "buffer size is not 32 bytes aligned\n");
> > + BUG_ON(1);
> > + }
> > +
> > + /* Added list head initialization on alloc */
> > + WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb);
> > +
> > + BUG_ON(NULL == icd->current_fmt);
> > + size = icd->user_height * bytes_per_line;
> > + pcdev->height = icd->user_height;
> > + pcdev->width = icd->user_width;
> > + if (vb2_plane_size(vb, 0) < size) {
> > + dev_err(icd->dev.parent, "Buffer too small (%lu < %lu)\n",
> > + vb2_plane_size(vb, 0), size);
> > + return -ENOBUFS;
> > + }
> > +
> > + buf->bsize = vb2_plane_size(vb, 0);
> > + vb2_set_plane_payload(vb, 0, size);
> > + return 0;
> > +}
> > +
> > +static void mv_videobuf_queue(struct vb2_buffer *vb)
> > +{
> > + struct soc_camera_device *icd =
> > + container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > + struct mv_buffer *buf = container_of(vb, struct mv_buffer, vb);
> > + unsigned long flags;
> > +
> > + dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
> > + vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
> > + buf->dma_handles = vb2_dma_contig_plane_paddr(vb, 0);
> > + if (!buf->dma_handles)
> > + BUG_ON(1);
> > +
> > + if (pcdev->pix_format.pixelformat == V4L2_PIX_FMT_YUV422P) {
> > + buf->yuv_p.y = buf->dma_handles;
> > + buf->yuv_p.u = buf->yuv_p.y + pcdev->width * pcdev->height;
> > + buf->yuv_p.v = buf->yuv_p.u + pcdev->width * pcdev->height
> > / 2;
> > + } else if (pcdev->pix_format.pixelformat == V4L2_PIX_FMT_YUV420) {
> > + buf->yuv_p.y = buf->dma_handles;
> > + buf->yuv_p.u = buf->yuv_p.y + pcdev->width * pcdev->height;
> > + buf->yuv_p.v = buf->yuv_p.u + pcdev->width * pcdev->height
> > / 4;
> > + } else {
> > + buf->yuv_p.y = buf->dma_handles;
> > + buf->yuv_p.u = pcdev->dummy_buf_phy;
> > + buf->yuv_p.v = pcdev->dummy_buf_phy;
> > + }
> > +
> > + spin_lock_irqsave(&pcdev->list_lock, flags);
> > + list_add_tail(&buf->queue, &pcdev->capture);
> > + spin_unlock_irqrestore(&pcdev->list_lock, flags);
> > +}
> > +
> > +static void mv_videobuf_release(struct vb2_buffer *vb)
> > +{
> > + struct mv_buffer *buf = container_of(vb, struct mv_buffer, vb);
> > + struct soc_camera_device *icd =
> > + container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > + unsigned long flags;
> > +
> > + spin_lock_irqsave(&pcdev->list_lock, flags);
> > + if (!list_empty(&buf->queue))
> > + list_del_init(&buf->queue);
> > + spin_unlock_irqrestore(&pcdev->list_lock, flags);
> > +}
> > +
> > +static int mv_videobuf_init(struct vb2_buffer *vb)
> > +{
> > + struct mv_buffer *buf = container_of(vb, struct mv_buffer, vb);
> > + INIT_LIST_HEAD(&buf->queue);
> > + return 0;
> > +}
> > +
> > +static int mv_start_streaming(struct vb2_queue *vq)
> > +{
> > + struct soc_camera_device *icd =
> > + container_of(vq, struct soc_camera_device, vb2_vidq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > +
> > + ccic_config_phy(pcdev);
> > + ccic_irq_enable(pcdev);
> > + ccic_start(pcdev);
> > + return 0;
> > +}
> > +
> > +static int mv_stop_streaming(struct vb2_queue *vq)
> > +{
> > + struct soc_camera_device *icd =
> > + container_of(vq, struct soc_camera_device, vb2_vidq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > +
> > + ccic_stop_dma(pcdev);
> > + return 0;
> > +}
> > +
> > +static struct vb2_ops mv_videobuf_ops = {
> > + .queue_setup = mv_videobuf_setup,
> > + .buf_prepare = mv_videobuf_prepare,
> > + .buf_queue = mv_videobuf_queue,
> > + .buf_cleanup = mv_videobuf_release,
> > + .buf_init = mv_videobuf_init,
> > + .start_streaming = mv_start_streaming,
> > + .stop_streaming = mv_stop_streaming,
> > + .wait_prepare = soc_camera_unlock,
> > + .wait_finish = soc_camera_lock,
> > +};
> > +
> > +static int mv_camera_init_videobuf(struct vb2_queue *q,
> > + struct soc_camera_device *icd)
> > +{
> > + int ret = 0;
> > + struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> > +
> > + ret = v4l2_subdev_call(sd, core, load_fw);
> > + if (ret < 0)
> > + BUG_ON(1);
> > +
> > + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> > + q->io_modes = VB2_USERPTR;
> > + q->drv_priv = icd;
> > + q->ops = &mv_videobuf_ops;
> > + q->mem_ops = &vb2_dma_contig_memops;
> > + q->buf_struct_size = sizeof(struct mv_buffer);
> > +
> > + return vb2_queue_init(q);
> > +}
> > +
> > +static inline void ccic_dma_done(struct mv_camera_dev *pcdev, short frame)
> > +{
> > + struct mv_buffer *buf = NULL;
> > + unsigned long flags = 0;
> > + dma_addr_t dma_base_reg = 0;
> > + struct mv_buffer *newbuf = NULL;
> > + unsigned long y, u, v;
> > +
> > + spin_lock_irqsave(&pcdev->list_lock, flags);
> > + dma_base_reg = ccic_reg_read(pcdev, REG_Y0BAR + (frame << 2));
> > +
> > + /* video buffer done */
> > + if (dma_base_reg != pcdev->dummy_buf_phy)
> > + list_for_each_entry(buf, &pcdev->sb_dma, queue) {
> > + if (dma_base_reg == buf->yuv_p.y) {
> > + list_del_init(&buf->queue);
> > + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
> > + break;
> > + }
> > + }
> > +
> > + if (list_empty(&pcdev->capture)) {
> > + /* use dummy buffer when no video buffer available */
> > + y = u = v = pcdev->dummy_buf_phy;
> > + } else {
> > + newbuf =
> > + list_entry(pcdev->capture.next, struct mv_buffer,
> > queue);
> > + list_move_tail(&newbuf->queue, &pcdev->sb_dma);
> > +
> > + y = newbuf->yuv_p.y;
> > + u = newbuf->yuv_p.u;
> > + v = newbuf->yuv_p.v;
> > + }
> > +
> > + /* Setup DMA */
> > + ccic_reg_write(pcdev, REG_Y0BAR + (frame << 2), y);
> > + ccic_reg_write(pcdev, REG_U0BAR + (frame << 2), u);
> > + ccic_reg_write(pcdev, REG_V0BAR + (frame << 2), v);
> > +
> > + spin_unlock_irqrestore(&pcdev->list_lock, flags);
> > +}
> > +
> > +static irqreturn_t mv_camera_irq(int irq, void *data)
> > +{
> > + struct mv_camera_dev *pcdev = data;
> > + unsigned int irqs;
> > + short frame = 0x0f;
> > +
> > + irqs = ccic_reg_read(pcdev, REG_IRQSTAT);
> > + ccic_reg_write(pcdev, REG_IRQSTAT, irqs);
> > +
> > + if (irqs & IRQ_EOF0)
> > + frame = 0;
> > + else if (irqs & IRQ_EOF1)
> > + frame = 1;
> > + else if (irqs & IRQ_EOF2)
> > + frame = 2;
> > + else
> > + frame = 0x0f;
> > + if (0x0f != frame)
> > + ccic_dma_done(pcdev, frame);
> > + return IRQ_HANDLED;
> > +}
> > +
> > +static int mv_camera_add_device(struct soc_camera_device *icd)
> > +{
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > +
> > + if (pcdev->icd)
> > + return -EBUSY;
> > +
> > + pcdev->icd = icd;
> > + ccic_enable_clk(pcdev);
> > +
> > + return 0;
> > +}
> > +
> > +static void mv_camera_remove_device(struct soc_camera_device
> > + *icd)
> > +{
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > +
> > + BUG_ON(icd != pcdev->icd);
> > +
> > + ccic_disable_clk(pcdev);
> > + pcdev->icd = NULL;
> > +}
> > +
> > +static int mv_camera_set_bus_param(struct soc_camera_device
> > + *icd, __u32 pixfmt)
> > +{
> > + struct device *dev = icd->dev.parent;
> > + int ret = 0;
> > + unsigned long common_flags = 0;
> > +
> > + common_flags = icd->ops->query_bus_param(icd);
> > +
> > + ret = icd->ops->set_bus_param(icd, common_flags);
> > + if (ret < 0) {
> > + dev_err(dev, "%s %d\n", __func__, __LINE__);
> > + return ret;
> > + }
> > + return 0;
> > +}
> > +
> > +static int mv_camera_set_fmt(struct soc_camera_device *icd,
> > + struct v4l2_format *f)
> > +{
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> > + struct mv_camera_dev *pcdev = ici->priv;
> > + struct device *dev = icd->dev.parent;
> > + struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> > + const struct soc_camera_format_xlate *xlate = NULL;
> > + struct v4l2_mbus_framefmt mf;
> > + int ret = 0;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > +
> > + memcpy(&(pcdev->pix_format), pix, sizeof(struct v4l2_pix_format));
> > + dev_err(dev, "S_FMT %c%c%c%c, %ux%u\n",
> > + pixfmtstr(pix->pixelformat), pix->width, pix->height);
> > + xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
> > + if (!xlate) {
> > + dev_err(dev, "Format %c%c%c%c not found\n",
> > + pixfmtstr(pix->pixelformat));
> > + return -EINVAL;
> > + }
> > +
> > + mf.width = pix->width;
> > + mf.height = pix->height;
> > + mf.field = pix->field;
> > + mf.colorspace = pix->colorspace;
> > + mf.code = xlate->code;
> > +
> > + ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
> > + if (ret < 0) {
> > + dev_err(dev, "%s %d\n", __func__, __LINE__);
> > + return ret;
> > + }
> > + if (mf.code != xlate->code) {
> > + dev_err(dev, "%s %d\n", __func__, __LINE__);
> > + return -EINVAL;
> > + }
> > +
> > + icd->sense = NULL;
> > +
> > + pix->width = mf.width;
> > + pix->height = mf.height;
> > + pix->field = mf.field;
> > + pix->colorspace = mf.colorspace;
> > + icd->current_fmt = xlate;
> > +
> > + ret = ccic_config_image(pcdev);
> > +
> > + return ret;
> > +}
> > +
> > +static int mv_camera_try_fmt(struct soc_camera_device *icd,
> > + struct v4l2_format *f)
> > +{
> > + struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> > + struct device *dev = icd->dev.parent;
> > + const struct soc_camera_format_xlate *xlate;
> > + struct v4l2_pix_format *pix = &f->fmt.pix;
> > + struct v4l2_mbus_framefmt mf;
> > + __u32 pixfmt = pix->pixelformat;
> > + int ret;
> > +
> > + xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
> > + if (!xlate) {
> > + dev_err(dev, "Format %c%c%c%c not found\n",
> > + pixfmtstr(pix->pixelformat));
> > + return -EINVAL;
> > + }
> > +
> > + pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
> > + xlate->host_fmt);
> > + if (pix->bytesperline < 0)
> > + return pix->bytesperline;
> > + if (pix->pixelformat == V4L2_PIX_FMT_JPEG)
> > + pix->bytesperline = 2048;
> > + else
> > + pix->sizeimage = pix->height * pix->bytesperline;
> > +
> > + /* limit to sensor capabilities */
> > + mf.width = pix->width;
> > + mf.height = pix->height;
> > + mf.field = pix->field;
> > + mf.colorspace = pix->colorspace;
> > + mf.code = xlate->code;
> > +
> > + ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
> > + if (ret < 0)
> > + return ret;
> > +
> > + pix->width = mf.width;
> > + pix->height = mf.height;
> > + pix->colorspace = mf.colorspace;
> > +
> > + switch (mf.field) {
> > + case V4L2_FIELD_ANY:
> > + case V4L2_FIELD_NONE:
> > + pix->field = V4L2_FIELD_NONE;
> > + break;
> > + default:
> > + dev_err(icd->dev.parent, "Field type %d unsupported.\n",
> > + mf.field);
> > + return -EINVAL;
> > + }
> > +
> > + return ret;
> > +
> > +}
> > +
> > +static unsigned int mv_camera_poll(struct file *file, poll_table * pt)
> > +{
> > + struct soc_camera_device *icd = file->private_data;
> > +
> > + return vb2_poll(&icd->vb2_vidq, file, pt);
> > +}
> > +
> > +static int mv_camera_querycap(struct soc_camera_host *ici,
> > + struct v4l2_capability *cap)
> > +{
> > + cap->version = KERNEL_VERSION(0, 2, 2);
> > + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
> > + strlcpy(cap->card, "Marvell.CCIC", sizeof(cap->card));
> > + return 0;
> > +}
> > +
> > +static const struct soc_mbus_pixelfmt ccic_formats[] = {
> > + {
> > + .fourcc = V4L2_PIX_FMT_YUV422P,
> > + .name = "YUV422PLANAR",
> > + .bits_per_sample = 8,
> > + .packing = SOC_MBUS_PACKING_2X8_PADLO,
> > + .order = SOC_MBUS_ORDER_LE,
> > + },
> > + {
> > + .fourcc = V4L2_PIX_FMT_YUV420,
> > + .name = "YUV420PLANAR",
> > + .bits_per_sample = 12,
> > + .packing = SOC_MBUS_PACKING_NONE,
> > + .order = SOC_MBUS_ORDER_LE,
> > + },
> > + {
> > + .fourcc = V4L2_PIX_FMT_UYVY,
> > + .name = "YUV422PACKED",
> > + .bits_per_sample = 8,
> > + .packing = SOC_MBUS_PACKING_2X8_PADLO,
> > + .order = SOC_MBUS_ORDER_LE,
> > + },
> > +
> > +};
> > +
> > +static int mv_camera_get_formats(struct soc_camera_device *icd,
> > + unsigned int idx,
> > + struct soc_camera_format_xlate
> > + *xlate)
> > +{
> > + struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> > + struct device *dev = icd->dev.parent;
> > + int formats = 0, ret;
> > + enum v4l2_mbus_pixelcode code;
> > + const struct soc_mbus_pixelfmt *fmt;
> > + int i = 0;
> > +
> > + ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
> > + if (ret < 0)
> > + /* No more formats */
> > + return 0;
> > +
> > + fmt = soc_mbus_get_fmtdesc(code);
> > + if (!fmt) {
> > + dev_err(dev, "Invalid format code #%u: %d\n", idx, code);
> > + return 0;
> > + }
> > +
> > + switch (code) {
> > + /* refer to mbus_fmt struct */
> > + case V4L2_MBUS_FMT_YUYV8_2X8:
> > + /* TODO: add support for YUV420 and YUV422P */
> > + formats = ARRAY_SIZE(ccic_formats);
> > +
> > + if (xlate) {
> > + for (i = 0; i < ARRAY_SIZE(ccic_formats); i++) {
> > + xlate->host_fmt = &ccic_formats[i];
> > + xlate->code = code;
> > + xlate++;
> > + }
> > + }
> > +
> > + break;
> > + default:
> > + /* camera controller can not support
> > + this format, which might supported by the sensor
> > + */
> > + dev_err(dev, "Not support fmt %s\n", fmt->name);
> > + return 0;
> > + }
> > +
> > + /* Generic pass-through */
> > + formats++;
> > + if (xlate) {
> > + xlate->host_fmt = fmt;
> > + xlate->code = code;
> > + xlate++;
> > + }
> > +
> > + return formats;
> > +}
> > +
> > +static int mv_camera_enum_fsizes(struct soc_camera_device *icd,
> > + struct v4l2_frmsizeenum *fsizes)
> > +{
> > + int ret;
> > + struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> > + const struct soc_camera_format_xlate *xlate;
> > + __u32 pixfmt = fsizes->pixel_format;
> > + struct v4l2_frmsizeenum *fsize_mbus = fsizes;
> > +
> > + xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
> > + if (!xlate)
> > + return -EINVAL;
> > +
> > + /* map xlate-code to pixel_format, sensor only handle xlate-code */
> > + fsize_mbus->pixel_format = xlate->code;
> > +
> > + ret = v4l2_subdev_call(sd, video, enum_mbus_fsizes, fsize_mbus);
> > + if (ret < 0)
> > + return ret;
> > +
> > + fsizes->pixel_format = pixfmt;
> > +
> > + return 0;
> > +}
> > +
> > +static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
> > + .owner = THIS_MODULE,
> > + .add = mv_camera_add_device,
> > + .remove = mv_camera_remove_device,
> > + .set_fmt = mv_camera_set_fmt,
> > + .try_fmt = mv_camera_try_fmt,
> > + .init_videobuf2 = mv_camera_init_videobuf,
> > + .poll = mv_camera_poll,
> > + .querycap = mv_camera_querycap,
> > + .set_bus_param = mv_camera_set_bus_param,
> > + .get_formats = mv_camera_get_formats,
> > + .enum_fsizes = mv_camera_enum_fsizes,
> > +};
> > +
> > +static int __devinit mv_camera_probe(struct platform_device
> > + *pdev)
> > +{
> > + struct mv_camera_dev *pcdev;
> > + struct mv_cam_pdata *mcam;
> > + struct resource *res;
> > + void __iomem *base;
> > + int irq;
> > + int err = 0;
> > + int i = 0;
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + irq = platform_get_irq(pdev, 0);
> > + if (!res || irq < 0) {
> > + 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;
> > + }
> > +
> > + /* allocate dummy buffer */
> > + pcdev->dummy_buf_virt =
> > + (void *)__get_free_pages(GFP_KERNEL, get_order(dma_buf_size));
> > + if (!pcdev->dummy_buf_virt) {
> > + dev_err(&pdev->dev, "Can't get memory for dummy buffer\n");
> > + err = -ENOMEM;
> > + goto exit_kfree;
> > + } else {
> > + pcdev->dummy_buf_phy = __pa(pcdev->dummy_buf_virt);
> > + }
> > +
> > + pcdev->res = res;
> > + pcdev->pdev = pdev;
> > +
> > + mcam = (struct mv_cam_pdata *)pdev->dev.platform_data;
> > + if (mcam->clk_init)
> > + err = mcam->clk_init(&pdev->dev, 1);
> > + else
> > + goto exit_clk;
> > +
> > + if (err)
> > + goto exit_clk;
> > +
> > + INIT_LIST_HEAD(&pcdev->capture);
> > + INIT_LIST_HEAD(&pcdev->sb_dma);
> > +
> > + spin_lock_init(&pcdev->list_lock);
> > +
> > + /*
> > + * Request the regions.
> > + */
> > + if (!request_mem_region
> > + (res->start, resource_size(res), MV_CAM_DRV_NAME)) {
> > + err = -EBUSY;
> > + dev_err(&pdev->dev, "request_mem_region resource failed\n");
> > + goto exit_release;
> > + }
> > +
> > + base = ioremap(res->start, resource_size(res));
> > + if (!base) {
> > + err = -ENOMEM;
> > + dev_err(&pdev->dev, "ioremap resource failed\n");
> > + goto exit_iounmap;
> > + }
> > + pcdev->irq = irq;
> > + pcdev->base = base;
> > + /* request irq */
> > + err = request_irq(pcdev->irq, mv_camera_irq, 0, MV_CAM_DRV_NAME,
> > pcdev);
> > + if (err) {
> > + dev_err(&pdev->dev, "Camera interrupt register failed\n");
> > + goto exit_free_irq;
> > + }
> > +
> > + /* setup dma with dummy_buf_phy firstly */
> > + for (i = 0; i < 3; i++) {
> > + ccic_reg_write(pcdev, REG_Y0BAR + (i << 2),
> > + pcdev->dummy_buf_phy);
> > + ccic_reg_write(pcdev, REG_U0BAR + (i << 2),
> > + pcdev->dummy_buf_phy);
> > + ccic_reg_write(pcdev, REG_V0BAR + (i << 2),
> > + pcdev->dummy_buf_phy);
> > + }
> > +
> > + ccic_enable_clk(pcdev);
> > + /*
> > + * Initialize the controller and leave it powered up. It will
> > + * stay that way until the sensor driver shows up.
> > + */
> > + ccic_init(pcdev);
> > + ccic_power_up(pcdev);
> > + pcdev->soc_host.drv_name = MV_CAM_DRV_NAME;
> > + pcdev->soc_host.ops = &pxa_soc_camera_host_ops;
> > + pcdev->soc_host.priv = pcdev;
> > + pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
> > + pcdev->soc_host.nr = pdev->id;
> > + err = soc_camera_host_register(&pcdev->soc_host);
> > + if (err)
> > + goto exit_free_irq;
> > + return 0;
> > +
> > +exit_free_irq:
> > + free_irq(pcdev->irq, pcdev);
> > + ccic_power_down(pcdev);
> > +exit_iounmap:
> > + iounmap(base);
> > +exit_release:
> > + release_mem_region(res->start, resource_size(res));
> > +exit_clk:
> > + mcam->clk_init(&pdev->dev, 0);
> > +exit_kfree:
> > + /* free dummy buffer */
> > + if (pcdev->dummy_buf_virt)
> > + free_pages((unsigned long)pcdev->dummy_buf_virt,
> > + get_order(dma_buf_size));
> > + kfree(pcdev);
> > +exit:
> > + return err;
> > +}
> > +
> > +static int mv_camera_remove(struct platform_device
> > + *pdev)
> > +{
> > +
> > + struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
> > + struct mv_camera_dev *pcdev = container_of(soc_host,
> > + struct
> > + mv_camera_dev,
> > + soc_host);
> > + struct mv_cam_pdata *mcam = pcdev->pdev->dev.platform_data;
> > + struct resource *res;
> > +
> > + mcam->clk_init(&pdev->dev, 0);
> > + free_irq(pcdev->irq, pcdev);
> > +
> > + soc_camera_host_unregister(soc_host);
> > +
> > + iounmap(pcdev->base);
> > +
> > + res = pcdev->res;
> > + release_mem_region(res->start, resource_size(res));
> > +
> > + kfree(pcdev);
> > +
> > + /* free dummy buffer */
> > + if (pcdev->dummy_buf_virt)
> > + free_pages((unsigned long)pcdev->dummy_buf_virt,
> > + get_order(dma_buf_size));
> > +
> > + dev_info(&pdev->dev, "MV Camera driver unloaded\n");
> > +
> > + return 0;
> > +}
> > +
> > +static struct platform_driver mv_camera_driver = {
> > + .driver = {
> > + .name = MV_CAM_DRV_NAME,
> > + },
> > + .probe = mv_camera_probe,
> > + .remove = mv_camera_remove,
> > +};
> > +
> > +static int __init mv_camera_init(void)
> > +{
> > + return platform_driver_register(&mv_camera_driver);
> > +}
> > +
> > +static void __exit mv_camera_exit(void)
> > +{
> > + platform_driver_unregister(&mv_camera_driver);
> > +}
> > +
> > +module_init(mv_camera_init);
> > +module_exit(mv_camera_exit);
> > +
> > +MODULE_DESCRIPTION("Marvell CCIC driver");
> > +MODULE_AUTHOR("Kassey Lee <y...@marvell.com>");
> > +MODULE_LICENSE("GPL");
> > --
> > 1.7.4.1
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-media" in
> > the body of a message to majord...@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
>
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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