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-rw-r--r--target/device/Atmel/misc-patches/linux-2.6.24-500-v4l-avr32-isi.patch2954
1 files changed, 2954 insertions, 0 deletions
diff --git a/target/device/Atmel/misc-patches/linux-2.6.24-500-v4l-avr32-isi.patch b/target/device/Atmel/misc-patches/linux-2.6.24-500-v4l-avr32-isi.patch
new file mode 100644
index 000000000..f79ab82a2
--- /dev/null
+++ b/target/device/Atmel/misc-patches/linux-2.6.24-500-v4l-avr32-isi.patch
@@ -0,0 +1,2954 @@
+diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
+index 441b877..3a85a5e 100644
+--- a/include/linux/videodev2.h
++++ b/include/linux/videodev2.h
+@@ -298,6 +298,9 @@ struct v4l2_pix_format
+ #define V4L2_PIX_FMT_PWC2 v4l2_fourcc('P','W','C','2') /* pwc newer webcam */
+ #define V4L2_PIX_FMT_ET61X251 v4l2_fourcc('E','6','2','5') /* ET61X251 compression */
+
++/* Byte-swapped YUYV */
++#define V4L2_PIX_FMT_VYUY v4l2_fourcc('V','Y','U','Y') /* 16 YUV 4:2:2 */
++#define V4L2_PIX_FMT_YVYU v4l2_fourcc('Y','V','Y','U') /* 16 YUV 4:2:2 */
+ /*
+ * F O R M A T E N U M E R A T I O N
+ */
+diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
+index 44ccaed..78e38d0 100644
+--- a/drivers/media/video/Makefile
++++ b/drivers/media/video/Makefile
+@@ -77,6 +77,7 @@ obj-$(CONFIG_VIDEO_HEXIUM_ORION) += hexium_orion.o
+ obj-$(CONFIG_VIDEO_HEXIUM_GEMINI) += hexium_gemini.o
+ obj-$(CONFIG_VIDEO_DPC) += dpc7146.o
+ obj-$(CONFIG_TUNER_3036) += tuner-3036.o
++obj-$(CONFIG_VIDEO_AVR32_ISI) += atmel-isi.o
+
+ obj-$(CONFIG_VIDEO_TUNER) += tuner.o
+ obj-$(CONFIG_VIDEO_BUF) += video-buf.o
+diff --git a/drivers/media/video/atmel-isi.c b/drivers/media/video/atmel-isi.c
+new file mode 100644
+index 0000000..a53a3c0
+--- /dev/null
++++ b/drivers/media/video/atmel-isi.c
+@@ -0,0 +1,1868 @@
++/*
++ * Copyright (c) 2007 Atmel Corporation
++ *
++ * Based on the bttv driver for Bt848 with respective copyright holders
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#define DEBUG
++#include <linux/clk.h>
++#include <linux/completion.h>
++#include <linux/dma-mapping.h>
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/ioctl.h>
++#include <linux/kernel.h>
++#include <linux/mm.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/version.h>
++#include <linux/videodev2.h>
++#include <linux/wait.h>
++
++#include <linux/kfifo.h>
++
++#include <asm/io.h>
++
++#include <media/v4l2-common.h>
++
++#include "atmel-isi.h"
++
++#define ATMEL_ISI_VERSION KERNEL_VERSION(0, 1, 0)
++#define ISI_CODEC 0
++
++/* Default ISI capture buffer size */
++#define ISI_CAPTURE_BUFFER_SIZE 800*600*2
++/* Default ISI video frame size */
++#define ISI_VIDEO_BUFFER_SIZE 320*240*2
++/* Default number of ISI video buffers */
++#define ISI_VIDEO_BUFFERS 4
++/* Maximum number of video buffers */
++#define ISI_VIDEO_BUFFERS_MAX 8
++
++/* Interrupt mask for a single capture */
++#define ISI_CAPTURE_MASK (ISI_BIT(SOF) | ISI_BIT(FO_C_EMP))
++
++/* ISI capture buffer size */
++static int capture_buffer_size = ISI_CAPTURE_BUFFER_SIZE;
++/* Number of buffers used for streaming video */
++static int video_buffers = 4;
++static int video_buffer_size = ISI_VIDEO_BUFFER_SIZE;
++
++/* Preview path horizontal size */
++static int prev_hsize = 320;
++/* Preview path vertical size */
++static int prev_vsize = 240;
++/* Scaling factor of the preview path */
++static int prev_decimation_factor = 1;
++
++/* Input image horizontal size */
++static int image_hsize = 320;
++
++/* Input image vertical size */
++static int image_vsize = 240;
++
++/* Frame rate scaler
++ * 1 = capture every second frame
++ * 2 = capture every third frame
++ * ...
++ * */
++static int frame_rate_scaler = 2;
++
++/* Set this value if we want to pretend a specific V4L2 output format
++ * This format is for the capturing interface
++ */
++static int capture_v4l2_fmt = V4L2_PIX_FMT_YUYV;
++/* Set this value if we want to pretend a specific V4L2 output format
++ * This format is for the streaming interface
++ */
++static int streaming_v4l2_fmt = V4L2_PIX_FMT_YUYV;
++
++MODULE_PARM_DESC(video_buffers,"Number of frame buffers used for streaming");
++module_param(video_buffers, int, 0664);
++MODULE_PARM_DESC(capture_buffer_size,"Capture buffer size");
++module_param(capture_buffer_size, int, 0664);
++MODULE_PARM_DESC(image_hsize,"Horizontal size of input image");
++module_param(image_hsize, int, 0664);
++MODULE_PARM_DESC(image_vsize,"Vertical size of input image");
++module_param(image_vsize, int, 0664);
++MODULE_PARM_DESC(frame_rate_scaler, "Frame rate scaler");
++module_param(frame_rate_scaler, int, 0664);
++MODULE_PARM_DESC(prev_hsize, "Horizontal image size of preview path output");
++module_param(prev_hsize, int, 0664);
++MODULE_PARM_DESC(prev_vsize, "Vertical image size of preview path output");
++module_param(prev_vsize, int, 0664);
++MODULE_PARM_DESC(prev_decimation_factor, "Preview path decimaion factor");
++module_param(prev_decimation_factor, int, 0664);
++/* Single frame capturing states */
++enum {
++ STATE_IDLE = 0,
++ STATE_CAPTURE_READY,
++ STATE_CAPTURE_WAIT_SOF,
++ STATE_CAPTURE_IN_PROGRESS,
++ STATE_CAPTURE_DONE,
++ STATE_CAPTURE_ERROR,
++};
++
++/* Frame buffer states
++ * FRAME_UNUSED Frame(buffer) is not used by the ISI module -> an application
++ * can usually read out data in this state
++ * FRAME_QUEUED An application has queued the buffer in the incoming queue
++ * FRAME_DONE The ISI module has filled the buffer with data and placed is on
++ * the outgoing queue
++ * FRAME_ERROR Not used at the moment
++ * */
++enum frame_status {
++ FRAME_UNUSED,
++ FRAME_QUEUED,
++ FRAME_DONE,
++ FRAME_ERROR,
++};
++/* Frame buffer descriptor
++ * Used by the ISI module as a linked list for the DMA controller.
++ */
++struct fbd {
++ /* Physical address of the frame buffer */
++ dma_addr_t fb_address;
++ /* Physical address of the next fbd */
++ dma_addr_t next_fbd_address;
++};
++
++/* Frame buffer data
++ */
++struct frame_buffer {
++ /* Frame buffer descriptor
++ * Used by the ISI DMA controller to provide linked list DMA operation
++ */
++ struct fbd fb_desc;
++ /* Pointer to the start of the frame buffer */
++ void *frame_buffer;
++ /* Timestamp of the captured frame */
++ struct timeval timestamp;
++ /* Frame number of the frame */
++ unsigned long sequence;
++ /* Buffer number*/
++ int index;
++ /* Bytes used in the buffer for data, needed as buffers are always
++ * aligned to pages and thus may be bigger than the amount of data*/
++ int bytes_used;
++ /* Mmap count
++ * Counter to measure how often this buffer is mmapped
++ */
++ int mmap_count;
++ /* Buffer status */
++ enum frame_status status;
++};
++
++struct atmel_isi {
++ /* ISI module spin lock. Protects against concurrent access of variables
++ * that are shared with the ISR */
++ spinlock_t lock;
++ void __iomem *regs;
++ /* Pointer to the start of the fbd list */
++ dma_addr_t fbd_list_start;
++ /* Frame buffers */
++ struct frame_buffer video_buffer[ISI_VIDEO_BUFFERS_MAX];
++ /* Frame buffer currently used by the ISI module */
++ struct frame_buffer *current_buffer;
++ /* Size of a frame buffer */
++ size_t capture_buffer_size;
++ /* Streaming status
++ * If set ISI is in streaming mode */
++ int streaming;
++ /* Queue for incoming buffers
++ * The buffer number (index) is stored in the fifo as reference
++ */
++ struct kfifo *grabq;
++ /* Spinlock for the incoming queue */
++ spinlock_t grabq_lock;
++ /* Queue for outgoing buffers
++ * Buffer number is stored in the fifo as reference
++ */
++ struct kfifo *doneq;
++ /* Spinlock for the incoming queue */
++ spinlock_t doneq_lock;
++
++ /* State of the ISI module in capturing mode */
++ int state;
++ /* Pointer to ISI buffer */
++ void *capture_buf;
++ /* Physical address of the capture buffer */
++ dma_addr_t capture_phys;
++ /* Size of the ISI buffer */
++ size_t capture_buf_size;
++ /* Capture/streaming wait queue */
++ wait_queue_head_t capture_wq;
++
++ struct atmel_isi_camera *camera;
++ struct atmel_isi_format format;
++ struct atmel_isi_format streaming_format;
++
++ struct mutex mutex;
++ /* User counter for the streaming interface */
++ int stream_users;
++ /* User counter of the capture interface */
++ int capture_users;
++ /* Video device for capturing (Codec path) */
++ struct video_device cdev;
++ /* Video device for streaming (Preview path) */
++ struct video_device vdev;
++ struct completion reset_complete;
++ struct clk *pclk;
++ struct clk *hclk;
++ struct platform_device *pdev;
++ unsigned int irq;
++};
++
++#define to_atmel_isi(vdev) container_of(vdev, struct atmel_isi, vdev)
++
++struct atmel_isi_fh {
++ struct atmel_isi *isi;
++ unsigned int read_off;
++};
++
++/*-----------------------------------------------------------------------------
++ * Interface to the actual camera.
++ */
++static LIST_HEAD(camera_list);
++static DEFINE_MUTEX(camera_list_mutex);
++
++static void avr32_isi_release_camera(struct atmel_isi *isi,
++ struct atmel_isi_camera *cam)
++{
++ mutex_lock(&camera_list_mutex);
++ cam->isi = NULL;
++ isi->camera = NULL;
++ module_put(cam->owner);
++ mutex_unlock(&camera_list_mutex);
++}
++
++int atmel_isi_register_camera(struct atmel_isi_camera *cam)
++{
++ pr_debug("atmel_isi: register camera %s\n", cam->name);
++
++ mutex_lock(&camera_list_mutex);
++ list_add_tail(&cam->list, &camera_list);
++ mutex_unlock(&camera_list_mutex);
++
++ return 0;
++}
++EXPORT_SYMBOL_GPL(atmel_isi_register_camera);
++
++void atmel_isi_unregister_camera(struct atmel_isi_camera *cam)
++{
++ pr_debug("atmel_isi: unregister camera %s\n", cam->name);
++
++ mutex_lock(&camera_list_mutex);
++ if (cam->isi)
++ cam->isi->camera = NULL;
++ list_del(&cam->list);
++ mutex_unlock(&camera_list_mutex);
++}
++EXPORT_SYMBOL_GPL(atmel_isi_unregister_camera);
++
++static struct atmel_isi_camera * avr32_isi_grab_camera(struct atmel_isi *isi)
++{
++ struct atmel_isi_camera *entry, *cam = NULL;
++
++ mutex_lock(&camera_list_mutex);
++ list_for_each_entry(entry, &camera_list, list) {
++ /* Just grab the first camera available */
++ if (!entry->isi) {
++ if (!try_module_get(entry->owner))
++ continue;
++
++ cam = entry;
++ cam->isi = isi;
++ pr_debug("%s: got camera: %s\n",
++ isi->vdev.name, cam->name);
++ break;
++ }
++ }
++ mutex_unlock(&camera_list_mutex);
++
++ return cam;
++}
++
++static int avr32_isi_set_camera_input(struct atmel_isi *isi)
++{
++ struct atmel_isi_camera *cam = isi->camera;
++ int ret;
++ u32 cr1;
++ u32 cr2;
++
++ isi->format.pix.width = image_hsize;
++ isi->format.pix.height = image_vsize;
++ isi->format.pix.bytesperline = 0;
++
++ ret = cam->set_format(cam, &isi->format);
++ if (ret)
++ return ret;
++
++
++ switch (isi->format.input_format) {
++ case ATMEL_ISI_PIXFMT_GREY:
++ cr2 = ISI_BIT(GRAYSCALE);
++ break;
++ case ATMEL_ISI_PIXFMT_CbYCrY:
++ cr2 = ISI_BF(YCC_SWAP, 0);
++ break;
++ case ATMEL_ISI_PIXFMT_CrYCbY:
++ cr2 = ISI_BF(YCC_SWAP, 1);
++ break;
++ case ATMEL_ISI_PIXFMT_YCbYCr:
++ cr2 = ISI_BF(YCC_SWAP, 2);
++ break;
++ case ATMEL_ISI_PIXFMT_YCrYCb:
++ cr2 = ISI_BF(YCC_SWAP, 3);
++ break;
++ case ATMEL_ISI_PIXFMT_RGB24:
++ cr2 = ISI_BIT(COL_SPACE) | ISI_BF(RGB_CFG, 0);
++ break;
++ case ATMEL_ISI_PIXFMT_BGR24:
++ cr2 = ISI_BIT(COL_SPACE) | ISI_BF(RGB_CFG, 1);
++ break;
++ case ATMEL_ISI_PIXFMT_RGB16:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_MODE)
++ | ISI_BF(RGB_CFG, 0));
++ break;
++ case ATMEL_ISI_PIXFMT_BGR16:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_MODE)
++ | ISI_BF(RGB_CFG, 1));
++ break;
++ case ATMEL_ISI_PIXFMT_GRB16:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_MODE)
++ | ISI_BF(RGB_CFG, 2));
++ break;
++ case ATMEL_ISI_PIXFMT_GBR16:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_MODE)
++ | ISI_BF(RGB_CFG, 3));
++ break;
++ case ATMEL_ISI_PIXFMT_RGB24_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BF(RGB_CFG, 0));
++ break;
++ case ATMEL_ISI_PIXFMT_BGR24_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BF(RGB_CFG, 1));
++ break;
++ case ATMEL_ISI_PIXFMT_RGB16_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BIT(RGB_MODE) | ISI_BF(RGB_CFG, 0));
++ break;
++ case ATMEL_ISI_PIXFMT_BGR16_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BIT(RGB_MODE) | ISI_BF(RGB_CFG, 1));
++ break;
++ case ATMEL_ISI_PIXFMT_GRB16_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BIT(RGB_MODE) | ISI_BF(RGB_CFG, 2));
++ break;
++ case ATMEL_ISI_PIXFMT_GBR16_REV:
++ cr2 = (ISI_BIT(COL_SPACE) | ISI_BIT(RGB_SWAP)
++ | ISI_BIT(RGB_MODE) | ISI_BF(RGB_CFG, 3));
++ break;
++ default:
++ return -EINVAL;
++ }
++
++
++ cr1 = ISI_BF(EMB_SYNC, cam->has_emb_sync)
++ | ISI_BF(HSYNC_POL, cam->hsync_act_low)
++ | ISI_BF(VSYNC_POL, cam->vsync_act_low)
++ | ISI_BF(PIXCLK_POL, cam->pclk_act_falling)
++ | ISI_BIT(DIS);
++
++ isi_writel(isi, CR1, cr1);
++ isi_writel(isi, CR2, cr2);
++
++ return 0;
++}
++
++static int avr32_isi_capture_set_format(struct atmel_isi *isi,
++ struct atmel_isi_format *fmt)
++{
++ u32 cr2;
++
++ fmt->pix.width = min(2048U, fmt->pix.width);
++ fmt->pix.height = min(2048U, fmt->pix.height);
++ fmt->pix.bytesperline = 0;
++
++ /* Set format if we have specified one */
++ if(capture_v4l2_fmt){
++ fmt->pix.pixelformat = capture_v4l2_fmt;
++ }
++ else {
++ /* Codec path output format */
++ fmt->pix.pixelformat = V4L2_PIX_FMT_YVYU;
++ }
++
++ /* The ISI module outputs either YUV 4:2:2 (codec path)
++ * or RGB 5:5:5 (preview path) (ISI grayscale mode is not supported
++ * by V4L2). Therefore two pixels will be in a 32bit word */
++ fmt->pix.bytesperline = ALIGN(fmt->pix.width * 2, 4);
++ fmt->pix.sizeimage = fmt->pix.bytesperline * fmt->pix.height;
++
++ cr2 = isi_readl(isi, CR2);
++ cr2 = ISI_BFINS(IM_VSIZE, fmt->pix.height - 1, cr2);
++ cr2 = ISI_BFINS(IM_HSIZE, fmt->pix.width - 1, cr2);
++ isi_writel(isi, CR2, cr2);
++
++ pr_debug("set capture format: width=%d height=%d\n",
++ fmt->pix.width, fmt->pix.height);
++
++ return 0;
++}
++
++static int avr32_isi_streaming_set_format(struct atmel_isi *isi,
++ struct atmel_isi_format *fmt)
++{
++ memcpy(&isi->streaming_format, &isi->format,
++ sizeof(struct atmel_isi_format));
++#ifndef ISI_CODEC
++ fmt->pix.width = min(640U, prev_hsize);
++ fmt->pix.height = min(480U, prev_vsize);
++ fmt->pix.bytesperline = 0;
++
++ /* Set format if we have specified one */
++ if(streaming_v4l2_fmt){
++ fmt->pix.pixelformat = streaming_v4l2_fmt;
++ }
++ else {
++ /* Preview path output format
++ * Would be logically V4L2_PIX_FMT_BGR555X
++ * but this format does not exist in the specification
++ * So for now we pretend V4L2_PIX_FMT_RGB555X
++ */
++ fmt->pix.pixelformat = V4L2_PIX_FMT_RGB555X;
++ }
++
++ /* The ISI module outputs either YUV 4:2:2 (codec path)
++ * or RGB 5:5:5 (preview path) (ISI grayscale mode is not
++ * supported yet. Therefore two pixels will be in a 32bit word
++ */
++ fmt->pix.bytesperline = ALIGN(fmt->pix.width * 2, 4);
++ fmt->pix.sizeimage = fmt->pix.bytesperline * fmt->pix.height;
++
++ /* These values depend on the sensor output image size */
++ isi_writel(isi, PDECF, prev_decimation_factor);/* 1/16 * 16 = 1*/
++ isi_writel(isi,PSIZE , ISI_BF(PREV_HSIZE,prev_hsize - 1)
++ | ISI_BF(PREV_VSIZE, prev_vsize - 1));
++
++ pr_debug("set_format: cr1=0x%08x cr2=0x%08x\n",
++ isi_readl(isi, CR1), isi_readl(isi, CR2));
++#else
++ avr32_isi_capture_set_format(isi, &isi->streaming_format);
++#endif
++ return 0;
++}
++
++static int avr32_isi_start_capture(struct atmel_isi *isi)
++{
++ u32 cr1;
++ int ret;
++
++ spin_lock_irq(&isi->lock);
++ isi->state = STATE_IDLE;
++ isi_readl(isi, SR); /* clear any pending SOF interrupt */
++ isi_writel(isi, IER, ISI_BIT(SOF));
++ isi_writel(isi, CR1, isi_readl(isi, CR1) & ~ISI_BIT(DIS));
++ spin_unlock_irq(&isi->lock);
++
++ pr_debug("isi: waiting for SOF\n");
++ ret = wait_event_interruptible(isi->capture_wq,
++ isi->state != STATE_IDLE);
++ if (ret)
++ return ret;
++ if (isi->state != STATE_CAPTURE_READY)
++ return -EIO;
++
++ /*
++ * Do a codec request. Next SOF indicates start of capture,
++ * the one after that indicates end of capture.
++ */
++ pr_debug("isi: starting capture\n");
++ isi_writel(isi, CDBA, isi->capture_phys);
++
++ spin_lock_irq(&isi->lock);
++ isi->state = STATE_CAPTURE_WAIT_SOF;
++ cr1 = isi_readl(isi, CR1);
++ cr1 |= ISI_BIT(CODEC_ON);
++ isi_writel(isi, CR1, cr1);
++ isi_writel(isi, IER, ISI_CAPTURE_MASK);
++ spin_unlock_irq(&isi->lock);
++
++ return 0;
++}
++
++static void avr32_isi_capture_done(struct atmel_isi *isi,
++ int state)
++{
++ u32 cr1;
++
++ cr1 = isi_readl(isi, CR1);
++ cr1 &= ~ISI_BIT(CODEC_ON);
++ isi_writel(isi, CR1, cr1);
++
++ isi->state = state;
++ wake_up_interruptible(&isi->capture_wq);
++ isi_writel(isi, IDR, ISI_CAPTURE_MASK);
++}
++
++static irqreturn_t avr32_isi_handle_streaming(struct atmel_isi *isi,
++ int sequence){
++
++ int reqnr;
++
++ if(kfifo_get(isi->grabq, (unsigned char *) &reqnr,
++ sizeof(int)) != sizeof(int)){
++
++ /* as no new buffer is available we keep the
++ * current one
++ */
++ pr_debug("isi: dropping frame\n");
++#ifdef ISI_CODEC
++ isi_writel(isi, CDBA,
++ isi->current_buffer->fb_desc.fb_address);
++
++ isi_writel(isi, CR1, ISI_BIT(CODEC_ON) |
++ isi_readl(isi, CR1));
++#else
++ /* TEST this has to be tested if it messes up the ISI
++ * streaming process */
++ isi_writel(isi, PPFBD, (unsigned long)
++ &isi->video_buffer[isi->current_buffer->index]);
++#endif
++ }
++ else{
++ isi->current_buffer->status = FRAME_DONE;
++ isi->current_buffer->sequence = sequence;
++
++ do_gettimeofday(&isi->current_buffer->timestamp);
++
++ /*isi->current_buffer->bytes_used =
++ ISI_VIDEO_MAX_FRAME_SIZE; */
++
++ kfifo_put(isi->doneq, (unsigned char *)
++ &(isi->current_buffer->index), sizeof(int));
++
++ isi->current_buffer = &(isi->video_buffer[reqnr]);
++#ifdef ISI_CODEC
++ isi_writel(isi, CDBA,
++ isi->current_buffer->fb_desc.fb_address);
++ isi_writel(isi, CR1, ISI_BIT(CODEC_ON) |
++ isi_readl(isi, CR1));
++#else
++ /*TODO check if fbd corresponds to frame buffer */
++#endif
++ wake_up_interruptible(&isi->capture_wq);
++ }
++ return IRQ_HANDLED;
++}
++
++/* FIXME move code from ISR here
++static irqreturn_t avr32_isi_handle_capturing(struct atmel_isi *isi){
++
++}*/
++/* isi interrupt service routine */
++static irqreturn_t isi_interrupt(int irq, void *dev_id)
++{
++ struct atmel_isi *isi = dev_id;
++ u32 status, mask, pending;
++ irqreturn_t ret = IRQ_NONE;
++ static int sequence = 0;
++
++ spin_lock(&isi->lock);
++
++ status = isi_readl(isi, SR);
++ mask = isi_readl(isi, IMR);
++ pending = status & mask;
++
++ pr_debug("isi: interrupt status %x pending %x\n",
++ status, pending);
++ if(isi->streaming){
++ if(likely(pending & (ISI_BIT(FO_C_EMP) | ISI_BIT(FO_P_EMP)))){
++
++ sequence++;
++ ret = avr32_isi_handle_streaming(isi, sequence);
++ }
++ }
++ else{
++ while (pending) {
++ if (pending & (ISI_BIT(FO_C_OVF) | ISI_BIT(FR_OVR))) {
++ avr32_isi_capture_done(isi, STATE_CAPTURE_ERROR);
++ pr_debug("%s: FIFO overrun (status=0x%x)\n",
++ isi->vdev.name, status);
++ } else if (pending & ISI_BIT(SOF)) {
++ switch (isi->state) {
++ case STATE_IDLE:
++ isi->state = STATE_CAPTURE_READY;
++ wake_up_interruptible(&isi->capture_wq);
++ break;
++ case STATE_CAPTURE_READY:
++ break;
++ case STATE_CAPTURE_WAIT_SOF:
++ isi->state = STATE_CAPTURE_IN_PROGRESS;
++ break;
++ /*
++ case STATE_CAPTURE_IN_PROGRESS:
++ avr32_isi_capture_done(isi, STATE_CAPTURE_DONE);
++ break;
++ */
++ }
++ }
++ if (pending & ISI_BIT(FO_C_EMP)){
++ if( isi->state == STATE_CAPTURE_IN_PROGRESS)
++ avr32_isi_capture_done(isi, STATE_CAPTURE_DONE);
++ }
++
++ if (pending & ISI_BIT(SOFTRST)) {
++ complete(&isi->reset_complete);
++ isi_writel(isi, IDR, ISI_BIT(SOFTRST));
++ }
++
++ status = isi_readl(isi, SR);
++ mask = isi_readl(isi, IMR);
++ pending = status & mask;
++ ret = IRQ_HANDLED;
++ }
++ }
++ spin_unlock(&isi->lock);
++
++ return ret;
++}
++
++/* ------------------------------------------------------------------------
++ * IOCTL videoc handling
++ * ----------------------------------------------------------------------*/
++
++/* --------Capture ioctls ------------------------------------------------*/
++/* Device capabilities callback function.
++ */
++static int avr32_isi_capture_querycap(struct file *file, void *priv,
++ struct v4l2_capability *cap)
++{
++ strcpy(cap->driver, "atmel-isi");
++ strcpy(cap->card, "Atmel Image Sensor Interface");
++ cap->version = ATMEL_ISI_VERSION;
++ /* V4L2_CAP_VIDEO_CAPTURE -> This is a capture device
++ * V4L2_CAP_READWRITE -> read/write interface used
++ */
++ cap->capabilities = (V4L2_CAP_VIDEO_CAPTURE
++ | V4L2_CAP_READWRITE
++ );
++ return 0;
++}
++
++/* Input enumeration callback function.
++ * Enumerates available input devices.
++ * This can be called many times from the V4L2-layer by
++ * incrementing the index to get all avaliable input devices.
++ */
++static int avr32_isi_capture_enum_input(struct file *file, void *priv,
++ struct v4l2_input *input)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /* Just one input (ISI) is available */
++ if (input->index != 0)
++ return -EINVAL;
++
++ /* Set input name as camera name */
++ strlcpy(input->name, isi->camera->name, sizeof(input->name));
++ input->type = V4L2_INPUT_TYPE_CAMERA;
++
++ /* Set to this value just because this should be set to a
++ * defined value
++ */
++ input->std = V4L2_STD_PAL;
++
++ return 0;
++}
++/* Selects an input device.
++ * One input device (ISI) currently supported.
++ */
++static int avr32_isi_capture_s_input(struct file *file, void *priv,
++ unsigned int index)
++{
++ if (index != 0)
++ return -EINVAL;
++ return 0;
++}
++
++/* Gets current input device.
++ */
++static int avr32_isi_capture_g_input(struct file *file, void *priv,
++ unsigned int *index)
++{
++ *index = 0;
++ return 0;
++}
++
++/* Format callback function
++ * Returns a v4l2_fmtdesc structure with according values to a
++ * index.
++ * This function is called from user space until it returns
++ * -EINVAL.
++ */
++static int avr32_isi_capture_enum_fmt_cap(struct file *file, void *priv,
++ struct v4l2_fmtdesc *fmt)
++{
++ if (fmt->index != 0)
++ return -EINVAL;
++
++ /* if we want to pretend another ISI output
++ * this is usefull if we input an other input format from a camera
++ * than specified in the ISI -> makes it possible to swap bytes
++ * in the ISI output format but messes up the preview path output
++ */
++ if(capture_v4l2_fmt){
++ fmt->pixelformat = capture_v4l2_fmt;
++ }
++ else {
++ /* This is the format the ISI tries to output */
++ strcpy(fmt->description, "YCbYCr (YUYV) 4:2:2");
++ fmt->pixelformat = V4L2_PIX_FMT_YUYV;
++ }
++
++ return 0;
++}
++
++static int avr32_isi_capture_try_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /* Just return the current format for now */
++ memcpy(&vfmt->fmt.pix, &isi->format.pix,
++ sizeof(struct v4l2_pix_format));
++
++ return 0;
++}
++
++/* Gets current hardware configuration
++ * For capture devices the pixel format settings are
++ * important.
++ */
++static int avr32_isi_capture_g_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /* Return current pixel format */
++ memcpy(&vfmt->fmt.pix, &isi->format.pix,
++ sizeof(struct v4l2_pix_format));
++
++ return 0;
++}
++
++static int avr32_isi_capture_s_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++ int ret = 0;
++
++ /* We have a fixed format so just copy the current format
++ * back
++ */
++ memcpy(&vfmt->fmt.pix, &isi->format.pix,
++ sizeof(struct v4l2_pix_format));
++
++ return ret;
++}
++
++/* ------------ Preview path ioctls ------------------------------*/
++/* Device capabilities callback function.
++ */
++static int avr32_isi_querycap(struct file *file, void *priv,
++ struct v4l2_capability *cap)
++{
++ strcpy(cap->driver, "atmel-isi");
++ strcpy(cap->card, "Atmel Image Sensor Interface");
++ cap->version = ATMEL_ISI_VERSION;
++ /* V4L2_CAP_VIDEO_CAPTURE -> This is a capture device
++ * V4L2_CAP_READWRITE -> read/write interface used
++ * V4L2_CAP_STREAMING -> ioctl + mmap interface used
++ */
++ cap->capabilities = (V4L2_CAP_VIDEO_CAPTURE
++ | V4L2_CAP_READWRITE
++ | V4L2_CAP_STREAMING
++ );
++ return 0;
++}
++
++/* Input enumeration callback function.
++ * Enumerates available input devices.
++ * This can be called many times from the V4L2-layer by
++ * incrementing the index to get all avaliable input devices.
++ */
++static int avr32_isi_enum_input(struct file *file, void *priv,
++ struct v4l2_input *input)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /* Just one input (ISI) is available */
++ if (input->index != 0)
++ return -EINVAL;
++
++ /* Set input name as camera name */
++ strlcpy(input->name, isi->camera->name, sizeof(input->name));
++ input->type = V4L2_INPUT_TYPE_CAMERA;
++
++ /* Set to this value just because this should be set to a
++ * defined value
++ */
++ input->std = V4L2_STD_PAL;
++
++ return 0;
++}
++
++/* Selects an input device.
++ * One input device (ISI) currently supported.
++ */
++static int avr32_isi_s_input(struct file *file, void *priv,
++ unsigned int index)
++{
++ if (index != 0)
++ return -EINVAL;
++
++ return 0;
++}
++
++/* Gets current input device.
++ */
++static int avr32_isi_g_input(struct file *file, void *priv,
++ unsigned int *index)
++{
++ *index = 0;
++ return 0;
++}
++
++/* Format callback function
++ * Returns a v4l2_fmtdesc structure with according values to a
++ * index.
++ * This function is called from user space until it returns
++ * -EINVAL.
++ */
++static int avr32_isi_enum_fmt_cap(struct file *file, void *priv,
++ struct v4l2_fmtdesc *fmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ if (fmt->index != 0)
++ return -EINVAL;
++
++ /* TODO: Return all possible formats
++ * This depends on ISI and camera.
++ * A enum_fmt function or a data structure should be
++ * added to the camera driver.
++ * For now just one format supported
++ */
++ if(streaming_v4l2_fmt){
++ strcpy(fmt->description, "Pretended format");
++ }
++ else{
++ strcpy(fmt->description, "Normal format");
++ }
++ fmt->pixelformat = isi->streaming_format.pix.pixelformat;//V4L2_PIX_FMT_UYVY;
++
++ return 0;
++}
++
++static int avr32_isi_try_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /* FIXME For now we just return the current format*/
++ memcpy(&vfmt->fmt.pix, &isi->streaming_format.pix,
++ sizeof(struct v4l2_pix_format));
++ return 0;
++}
++
++/* Gets current hardware configuration
++ * For capture devices the pixel format settings are
++ * important.
++ */
++static int avr32_isi_g_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++
++ /*Copy current pixel format structure to user space*/
++ memcpy(&vfmt->fmt.pix, &isi->streaming_format.pix,
++ sizeof(struct v4l2_pix_format));
++
++ return 0;
++}
++
++static int avr32_isi_s_fmt_cap(struct file *file, void *priv,
++ struct v4l2_format *vfmt)
++{
++ struct atmel_isi_fh *fh = priv;
++ struct atmel_isi *isi = fh->isi;
++ int ret = 0;
++
++ /* Just return the current format as we do not support
++ * format switching */
++ memcpy(&vfmt->fmt.pix, &isi->streaming_format.pix,
++ sizeof(struct v4l2_pix_format));
++
++ return ret;
++}
++
++/* Checks if control is supported in driver
++ * No controls currently supported yet
++ */
++static int avr32_isi_queryctrl(struct file *file, void *priv,
++ struct v4l2_queryctrl *qc)
++{
++ switch(qc->id){
++ case V4L2_CID_BRIGHTNESS:
++ strcpy(qc->name, "Brightness");
++ qc->minimum = 0;
++ qc->maximum = 100;
++ qc->step = 1;
++ qc->default_value = 50;
++ qc->flags = 0;
++ break;
++ default:
++ return -EINVAL;
++ }
++ return 0;
++}
++
++static int avr32_isi_g_ctrl(struct file *file, void *priv,
++ struct v4l2_control *ctrl)
++{
++ switch(ctrl->id){
++ case V4L2_CID_BRIGHTNESS:
++ ctrl->value = 0;
++ break;
++ default:
++ return -EINVAL;
++ }
++ return 0;
++}
++
++static int avr32_isi_s_ctrl(struct file *file, void *priv,
++ struct v4l2_control *ctrl)
++{
++ switch(ctrl->id){
++ case V4L2_CID_BRIGHTNESS:
++ break;
++ default:
++ return -EINVAL;
++ }
++ return 0;
++}
++
++static int avr32_isi_reqbufs(struct file *file, void *private_data,
++ struct v4l2_requestbuffers *req)
++{
++ /* Only memory mapped buffers supported*/
++ if(req->memory != V4L2_MEMORY_MMAP){
++ pr_debug("atmel_isi: buffer format not supported\n");
++ return -EINVAL;
++ }
++ pr_debug("atmel_isi: Requested %d buffers. Using %d buffers\n",
++ req->count, video_buffers);
++ /* buffer number is fixed for now as it is difficult to get
++ * that memory at runtime */
++ req->count = video_buffers;
++ memset(&req->reserved, 0, sizeof(req->reserved));
++ return 0;
++}
++
++static int avr32_isi_querybuf(struct file *file, void *private_data,
++ struct v4l2_buffer *buf)
++{
++ struct atmel_isi_fh *fh = private_data;
++ struct atmel_isi *isi = fh->isi;
++ struct frame_buffer *buffer;
++
++ if(unlikely(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
++ return -EINVAL;
++ if(unlikely(buf->index >= video_buffers))
++ return -EINVAL;
++
++ buffer = &(isi->video_buffer[buf->index]);
++
++ buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++ buf->length = video_buffer_size;
++ buf->memory = V4L2_MEMORY_MMAP;
++
++ /* set index as mmap reference to the buffer */
++ buf->m.offset = buf->index << PAGE_SHIFT;
++
++ switch(buffer->status){
++ case FRAME_UNUSED:
++ case FRAME_ERROR:
++ case FRAME_QUEUED:
++ buf->flags |= V4L2_BUF_FLAG_QUEUED;
++ buf->bytesused = buffer->bytes_used;
++ break;
++ case FRAME_DONE:
++ buf->flags |= V4L2_BUF_FLAG_DONE;
++ buf->bytesused = buffer->bytes_used;
++ buf->sequence = buffer->sequence;
++ buf->timestamp = buffer->timestamp;
++ break;
++ }
++
++ buf->field = V4L2_FIELD_NONE; /* no interlacing stuff */
++
++ if(buffer->mmap_count)
++ buf->flags |= V4L2_BUF_FLAG_MAPPED;
++ else
++ buf->flags &= ~V4L2_BUF_FLAG_MAPPED;
++
++ pr_debug("atmel_isi: querybuf index:%d offset:%d\n",
++ buf->index, buf->m.offset);
++
++ return 0;
++}
++
++static int avr32_isi_qbuf(struct file *file, void *private_data,
++ struct v4l2_buffer *buf)
++{
++ struct atmel_isi_fh *fh = private_data;
++ struct atmel_isi *isi = fh->isi;
++ struct frame_buffer *buffer;
++
++ if(unlikely(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
++ return -EINVAL;
++ if(unlikely(buf->index >= video_buffers || buf->index < 0))
++ return -EINVAL;
++ if(unlikely(buf->memory != V4L2_MEMORY_MMAP))
++ return -EINVAL;
++
++ buffer = &(isi->video_buffer[buf->index]);
++ if(unlikely(buffer->status != FRAME_UNUSED))
++ return -EINVAL;
++
++ mutex_lock(&isi->mutex);
++ buf->flags |= V4L2_BUF_FLAG_QUEUED;
++ buf->flags &= ~V4L2_BUF_FLAG_DONE;
++ buffer->status = FRAME_QUEUED;
++ kfifo_put(isi->grabq, (unsigned char*) &buf->index, sizeof(int));
++ mutex_unlock(&isi->mutex);
++
++ return 0;
++}
++
++static int avr32_isi_dqbuf(struct file *file, void *private_data,
++ struct v4l2_buffer *buf)
++{
++ struct atmel_isi_fh *fh = private_data;
++ struct atmel_isi *isi = fh->isi;
++ struct frame_buffer *buffer;
++ int reqnr = 0;
++
++ if(unlikely(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
++ return -EINVAL;
++ /* Mencoder does not set this flag
++ *
++ if(unlikely(buf->memory != V4L2_MEMORY_MMAP)){
++ pr_debug("isi: dequeue failed buffer not of mmapped type\n");
++ return -EINVAL;
++ }*/
++ if((kfifo_len(isi->doneq) == 0) && (file->f_flags & O_NONBLOCK)){
++ pr_debug("Done-queue is empty\n");
++ return -EAGAIN;
++ }
++ /*
++ if(wait_event_interruptible(isi->capture_wq,
++ kfifo_len(isi->doneq) != 0) < 0){
++ pr_debug("Done-queue interrupted\n");
++ return -EINTR;
++ }
++ */
++ if(!kfifo_get(isi->doneq, (unsigned char*) &reqnr, sizeof(int))){
++ return -EBUSY;
++ }
++ buffer = &(isi->video_buffer[reqnr]);
++
++ if(unlikely(buffer->status != FRAME_DONE)){
++ pr_debug("isi: error, dequeued buffer not ready\n");
++ return -EINVAL;
++ }
++ buf->index = reqnr;
++ buf->bytesused = buffer->bytes_used;
++ buf->timestamp = buffer->timestamp;
++ buf->sequence = buffer->sequence;
++ buf->m.offset = reqnr << PAGE_SHIFT;
++ buffer->status = FRAME_UNUSED;
++ buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
++
++ buf->length = isi->capture_buffer_size;
++ buf->field = V4L2_FIELD_NONE;
++ buf->memory = V4L2_MEMORY_MMAP;
++ return 0;
++}
++
++static int avr32_isi_streamon(struct file *file, void *private_data,
++ enum v4l2_buf_type type)
++{
++ struct atmel_isi_fh *fh = private_data;
++ struct atmel_isi *isi = fh->isi;
++ int reqnr;
++ struct frame_buffer *buffer;
++ u32 cr1;
++
++ if(unlikely(type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
++ return -EINVAL;
++
++ if(!kfifo_get(isi->grabq, (unsigned char*) &reqnr, sizeof(int))){
++ mutex_unlock(&isi->mutex);
++ pr_debug("atmel_isi: No buffer in IN-Queue, start of streaming\
++ aborted (one buffer is required in IN-Queue)\n");
++ return -EINVAL;
++ }
++ buffer = &(isi->video_buffer[reqnr]);
++
++
++ spin_lock_irq(isi->lock);
++ isi->streaming = 1;
++ isi->current_buffer = buffer;
++ cr1 = isi_readl(isi, CR1);
++#ifdef ISI_CODEC
++ isi_writel(isi, CDBA, buffer->fb_desc.fb_address);
++ /* Enable codec path */
++ cr1 |= ISI_BIT(CODEC_ON) | ISI_BIT(DIS);
++#else
++ isi_writel(isi, PPFBD, isi->fbd_list_start);
++#endif
++ /* Enable interrupts */
++ isi_readl(isi, SR);
++ /* FIXME enable codec/preview path according to setup */
++ isi_writel(isi, IER, ISI_BIT(FO_C_EMP) | ISI_BIT(FO_P_EMP));
++
++ cr1 |= ISI_BF(FRATE, frame_rate_scaler);
++
++ /* Enable ISI module*/
++ cr1 &= ~ISI_BIT(DIS);
++ isi_writel(isi, CR1, cr1);
++ spin_unlock_irq(isi->lock);
++
++ isi->camera->start_capture(isi->camera);
++
++ return 0;
++}
++
++static int avr32_isi_streamoff(struct file *file, void *private_data,
++ enum v4l2_buf_type type)
++{
++ struct atmel_isi_fh *fh = private_data;
++ struct atmel_isi *isi = fh->isi;
++
++ if(unlikely(type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
++ return -EINVAL;
++
++ spin_lock_irq(isi->lock);
++ isi->streaming = 0;
++#ifdef ISI_CODEC
++ /* Disble codec path */
++ isi_writel(isi, CR1, isi_readl(isi, CR1) & (~ISI_BIT(CODEC_ON)));
++#endif
++ /* Disable interrupts */
++ isi_writel(isi, IDR, ISI_BIT(FO_C_EMP) | ISI_BIT(FO_P_EMP));
++
++ /* Disable ISI module*/
++ isi_writel(isi, CR1, isi_readl(isi, CR1) | ISI_BIT(DIS));
++ spin_unlock_irq(isi->lock);
++
++ isi->camera->stop_capture(isi->camera);
++ pr_debug("atmel_isi: Stream off\n");
++
++ return 0;
++}
++
++/*----------------------------------------------------------------------------*/
++static int avr32_isi_capture_close (struct inode *inode, struct file *file)
++{
++ struct atmel_isi_fh *fh = file->private_data;
++ struct atmel_isi *isi = fh->isi;
++ u32 cr1;
++
++ mutex_lock(&isi->mutex);
++
++ isi->capture_users--;
++ kfree(fh);
++
++ /* Stop camera and ISI if driver has no users */
++ if(!isi->stream_users) {
++ isi->camera->stop_capture(isi->camera);
++
++ spin_lock_irq(&isi->lock);
++ cr1 = isi_readl(isi, CR1);
++ cr1 |= ISI_BIT(DIS);
++ isi_writel(isi, CR1, cr1);
++ spin_unlock_irq(&isi->lock);
++ }
++ mutex_unlock(&isi->mutex);
++
++ return 0;
++}
++
++static int avr32_isi_capture_open (struct inode *inode, struct file *file)
++{
++ struct video_device *vdev = video_devdata(file);
++ struct atmel_isi *isi = to_atmel_isi(vdev);
++ struct atmel_isi_fh *fh;
++ int ret = -EBUSY;
++ unsigned long timeout;
++
++ mutex_lock(&isi->mutex);
++
++
++ if (isi->capture_users) {
++ pr_debug("%s: open(): device busy\n", vdev->name);
++ goto out;
++ }
++
++ if (!isi->camera) {
++
++ ret = -ENODEV;
++ isi->camera = avr32_isi_grab_camera(isi);
++ if (!isi->camera)
++ goto out;
++
++ ret = avr32_isi_set_camera_input(isi);
++ if(ret)
++ goto out;
++ }
++
++ avr32_isi_capture_set_format(isi, &isi->format);
++
++ /*
++ * Reset the controller and wait for completion. The
++ * reset will only succeed if we have a pixel clock
++ * from the camera.
++ */
++ if(isi->stream_users == 0){
++
++ init_completion(&isi->reset_complete);
++ isi_writel(isi, IER, ISI_BIT(SOFTRST));
++ isi_writel(isi, CR1, ISI_BIT(RST));
++
++ timeout = wait_for_completion_timeout(&isi->reset_complete,
++ msecs_to_jiffies(100));
++
++ isi_writel(isi, IDR, ~0UL);
++ if (timeout == 0) {
++ ret = -ETIMEDOUT;
++ goto out;
++ }
++ }
++
++ ret = -ENOMEM;
++ fh = kzalloc(sizeof(struct atmel_isi_fh), GFP_KERNEL);
++ if (!fh) {
++ pr_debug("%s: open(): out of memory\n", vdev->name);
++ goto out;
++ }
++
++ fh->isi = isi;
++ file->private_data = fh;
++ isi->capture_users++;
++
++ ret = 0;
++
++out:
++ mutex_unlock(&isi->mutex);
++ return ret;
++}
++
++static ssize_t avr32_isi_capture_read(struct file *file, char __user *data,
++ size_t count, loff_t *ppos)
++{
++ struct atmel_isi_fh *fh = file->private_data;
++ struct atmel_isi *isi = fh->isi;
++ int state;
++ int ret;
++
++ state = STATE_IDLE;
++
++ pr_debug("isi: read %zu bytes read_off=%u state=%u sizeimage=%u\n",
++ count, fh->read_off, state, isi->format.pix.sizeimage);
++ isi->camera->start_capture(isi->camera);
++
++
++ avr32_isi_start_capture(isi);
++
++ ret = wait_event_interruptible( isi->capture_wq,
++ (isi->state == STATE_CAPTURE_DONE)
++ || (isi->state == STATE_CAPTURE_ERROR));
++ if (ret)
++ return ret;
++ if (isi->state == STATE_CAPTURE_ERROR) {
++ isi->state = STATE_IDLE;
++ return -EIO;
++ }
++
++ fh->read_off = 0;
++
++ count = min(count, (size_t)isi->format.pix.sizeimage - fh->read_off);
++ ret = copy_to_user(data, isi->capture_buf + fh->read_off, count);
++ if (ret)
++ return -EFAULT;
++
++ fh->read_off += count;
++ if (fh->read_off >= isi->format.pix.sizeimage)
++ isi->state = STATE_IDLE;
++
++ return count;
++}
++
++static void avr32_isi_capture_release (struct video_device *vdev)
++{
++ pr_debug("%s: release\n", vdev->name);
++}
++
++/* ----------------- Streaming interface -------------------------------------*/
++static void avr32_isi_vm_open(struct vm_area_struct *vma){
++ struct frame_buffer *buffer =
++ (struct frame_buffer *) vma->vm_private_data;
++ buffer->mmap_count++;
++ pr_debug("atmel_isi: vm_open count=%d\n",buffer->mmap_count);
++}
++
++static void avr32_isi_vm_close(struct vm_area_struct *vma){
++ struct frame_buffer *buffer =
++ (struct frame_buffer *) vma->vm_private_data;
++ pr_debug("atmel_isi: vm_close count=%d\n",buffer->mmap_count);
++ buffer->mmap_count--;
++ if(buffer->mmap_count < 0)
++ printk("atmel_isi: mmap_count went negative\n");
++}
++
++/* FIXME remove this function
++struct page *avr32_isi_vm_nopage( struct vm_area_struct *vma,
++ unsigned long address, int *type )
++{
++ return NOPAGE_SIGBUS;
++}
++*/
++
++static struct vm_operations_struct avr32_isi_vm_ops = {
++ .open = avr32_isi_vm_open,
++ .close = avr32_isi_vm_close,
++ //.nopage = avr32_isi_vm_nopage,
++};
++
++static int avr32_isi_mmap(struct file *file, struct vm_area_struct *vma)
++{
++ unsigned long pfn;
++ int ret;
++ struct atmel_isi_fh *fh = file->private_data;
++ struct atmel_isi * isi = fh->isi;
++ struct frame_buffer *buffer = &(isi->video_buffer[vma->vm_pgoff]);
++ unsigned long size = vma->vm_end - vma->vm_start;
++
++ pr_debug("atmel_isi: mmap called pgoff=%ld size=%ld \n",
++ vma->vm_pgoff, size);
++
++ if(size > video_buffer_size){
++ pr_debug("atmel_isi: mmap requested buffer is to large\n");
++ return -EINVAL;
++ }
++ if(vma->vm_pgoff > video_buffers){
++ pr_debug("atmel_isi: invalid mmap page offset\n");
++ return -EINVAL;
++ }
++ pfn = isi->video_buffer[vma->vm_pgoff].fb_desc.fb_address >> PAGE_SHIFT;
++
++ ret = remap_pfn_range(vma, vma->vm_start, pfn,
++ vma->vm_end - vma->vm_start, vma->vm_page_prot);
++ if(ret){
++ return ret;
++ }
++
++ vma->vm_ops = &avr32_isi_vm_ops;
++ vma->vm_flags = VM_DONTEXPAND; /* fixed size */
++ vma->vm_flags |= VM_RESERVED;/* do not swap out */
++ vma->vm_flags |= VM_DONTCOPY;
++ vma->vm_flags |= VM_SHARED;
++ vma->vm_private_data = (void *) buffer;
++ avr32_isi_vm_open(vma);
++
++ pr_debug("atmel_isi: vma start=0x%08lx, size=%ld phys=%ld \n",
++ (unsigned long) vma->vm_start,
++ (unsigned long) vma->vm_end - (unsigned long) vma->vm_start,
++ pfn << PAGE_SHIFT);
++ return 0;
++}
++
++static unsigned int avr32_isi_poll(struct file *file, poll_table *wait)
++{
++ struct atmel_isi_fh *fh = file->private_data;
++ struct atmel_isi *isi = fh->isi;
++ unsigned int ret = 0;
++
++ mutex_lock(&isi->mutex);
++ poll_wait(file, &isi->capture_wq, wait);
++ if(kfifo_len(isi->doneq))
++ ret = POLLIN | POLLRDNORM;
++ mutex_unlock(&isi->mutex);
++
++ return ret;
++}
++
++static int avr32_isi_stream_close (struct inode *inode, struct file *file)
++{
++ struct atmel_isi_fh *fh = file->private_data;
++ struct atmel_isi *isi = fh->isi;
++ u32 cr1;
++
++ mutex_lock(&isi->mutex);
++
++ isi->stream_users--;
++ kfree(fh);
++
++ /* Stop camera and ISI if driver has no users */
++ if(!isi->capture_users) {
++ isi->camera->stop_capture(isi->camera);
++
++ spin_lock_irq(&isi->lock);
++ cr1 = isi_readl(isi, CR1);
++ cr1 |= ISI_BIT(DIS);
++ isi_writel(isi, CR1, cr1);
++ spin_unlock_irq(&isi->lock);
++ }
++
++ mutex_unlock(&isi->mutex);
++
++ return 0;
++}
++
++static int avr32_isi_stream_open (struct inode *inode, struct file *file)
++{
++ struct video_device *vdev = video_devdata(file);
++ struct atmel_isi *isi = to_atmel_isi(vdev);
++ struct atmel_isi_fh *fh;
++ int ret = -EBUSY;
++ unsigned long timeout;
++
++ mutex_lock(&isi->mutex);
++
++
++ if (isi->stream_users) {
++ pr_debug("%s: open(): device busy\n", vdev->name);
++ goto out;
++ }
++
++ if (!isi->camera) {
++ ret = -ENODEV;
++ isi->camera = avr32_isi_grab_camera(isi);
++ if (!isi->camera)
++ goto out;
++ ret = -EINVAL;
++ ret = avr32_isi_set_camera_input(isi);
++ if(ret)
++ goto out;
++ }
++ avr32_isi_streaming_set_format(isi, &isi->format);
++ kfifo_reset(isi->grabq);
++ kfifo_reset(isi->doneq);
++
++ /*
++ * Reset the controller and wait for completion. The
++ * reset will only succeed if we have a pixel clock
++ * from the camera.
++ */
++ if(isi->stream_users == 0){
++
++ init_completion(&isi->reset_complete);
++ isi_writel(isi, IER, ISI_BIT(SOFTRST));
++ isi_writel(isi, CR1, ISI_BIT(RST));
++
++ timeout = wait_for_completion_timeout(&isi->reset_complete,
++ msecs_to_jiffies(100));
++
++ if (timeout == 0) {
++ ret = -ETIMEDOUT;
++ goto out;
++ }
++ isi_writel(isi, IDR, ~0UL);
++ }
++
++ ret = -ENOMEM;
++ fh = kzalloc(sizeof(struct atmel_isi_fh), GFP_KERNEL);
++ if (!fh) {
++ pr_debug("%s: open(): out of memory\n", vdev->name);
++ goto out;
++ }
++
++ fh->isi = isi;
++ file->private_data = fh;
++ isi->stream_users++;
++
++ ret = 0;
++
++out:
++ mutex_unlock(&isi->mutex);
++ return ret;
++}
++
++static void avr32_isi_stream_release (struct video_device *vdev)
++{
++ struct atmel_isi *isi = to_atmel_isi(vdev);
++ pr_debug("%s: release\n", vdev->name);
++ kfree(isi);
++}
++
++/* -----------------------------------------------------------------------*/
++
++/* Streaming v4l2 device file operations */
++static struct file_operations avr32_isi_streaming_fops = {
++ .owner = THIS_MODULE,
++ .ioctl = video_ioctl2,
++ .open = avr32_isi_stream_open,
++ .release = avr32_isi_stream_close,
++ .mmap = avr32_isi_mmap,
++ .poll = avr32_isi_poll,
++};
++
++/* Capture v4l2 device file operations */
++static struct file_operations avr32_isi_capture_fops = {
++ .owner = THIS_MODULE,
++ .open = avr32_isi_capture_open,
++ .release = avr32_isi_capture_close,
++ .read = avr32_isi_capture_read,
++ .ioctl = video_ioctl2,
++};
++
++static int __exit avr32_isi_remove(struct platform_device *pdev)
++{
++ struct atmel_isi *isi = platform_get_drvdata(pdev);
++ int i;
++
++ if (isi->camera)
++ isi->camera->stop_capture(isi->camera);
++
++ if (isi->camera)
++ avr32_isi_release_camera(isi, isi->camera);
++ video_unregister_device(&isi->cdev);
++ video_unregister_device(&isi->vdev);
++
++ platform_set_drvdata(pdev, NULL);
++
++ /* release capture buffer */
++ dma_free_coherent(&pdev->dev, capture_buffer_size,
++ isi->capture_buf, isi->capture_phys);
++
++ /* release frame buffers */
++ for(i = 0; i < video_buffers; i++){
++ dma_free_coherent(&pdev->dev,
++ video_buffer_size,
++ isi->video_buffer[i].frame_buffer,
++ isi->video_buffer[i].fb_desc.fb_address);
++ }
++
++ kfifo_free(isi->doneq);
++ kfifo_free(isi->grabq);
++
++ free_irq(isi->irq, isi);
++ iounmap(isi->regs);
++ clk_disable(isi->hclk);
++ clk_disable(isi->pclk);
++ clk_put(isi->hclk);
++ clk_put(isi->pclk);
++
++ /*
++ * Don't free isi here -- it will be taken care of by the
++ * release() callback.
++ */
++
++ return 0;
++}
++
++
++static int __init avr32_isi_probe(struct platform_device *pdev)
++{
++ unsigned int irq;
++ struct atmel_isi *isi;
++ struct clk *pclk, *hclk;
++ struct resource *regs;
++ int ret;
++ int i;
++ int video_bytes_used = video_buffer_size;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if(!regs)
++ return -ENXIO;
++
++ pclk = clk_get(&pdev->dev, "pclk");
++ if (IS_ERR(pclk))
++ return PTR_ERR(pclk);
++ hclk = clk_get(&pdev->dev, "hclk");
++ if (IS_ERR(hclk)) {
++ ret = PTR_ERR(hclk);
++ goto err_hclk;
++ }
++ clk_enable(pclk);
++ clk_enable(hclk);
++
++ isi = kzalloc(sizeof(struct atmel_isi), GFP_KERNEL);
++ if(!isi){
++ ret = -ENOMEM;
++ dev_err(&pdev->dev, "can't allocate interface!\n");
++ goto err_alloc_isi;
++ }
++
++ isi->pclk = pclk;
++ isi->hclk = hclk;
++
++ /* Round up buffer sizes to the next page if needed */
++ video_buffer_size = PAGE_ALIGN(video_buffer_size);
++ capture_buffer_size = PAGE_ALIGN(capture_buffer_size);
++
++ spin_lock_init(&isi->lock);
++ mutex_init(&isi->mutex);
++ init_waitqueue_head(&isi->capture_wq);
++
++ /* Initialize v4l2 capture device */
++ isi->cdev.fops = &avr32_isi_capture_fops;
++ strcpy(isi->cdev.name, "atmel_isi_capture");
++ isi->cdev.type = VFL_TYPE_GRABBER;
++ isi->cdev.type2 = VID_TYPE_CAPTURE;
++ isi->cdev.minor = -1;
++ isi->cdev.release =avr32_isi_capture_release;
++ isi->cdev.vidioc_querycap = avr32_isi_capture_querycap;
++ isi->cdev.vidioc_enum_fmt_cap = avr32_isi_capture_enum_fmt_cap;
++ isi->cdev.vidioc_try_fmt_cap = avr32_isi_capture_try_fmt_cap;
++ isi->cdev.vidioc_g_fmt_cap = avr32_isi_capture_g_fmt_cap;
++ isi->cdev.vidioc_s_fmt_cap = avr32_isi_capture_s_fmt_cap;
++ isi->cdev.vidioc_enum_input = avr32_isi_capture_enum_input;
++ isi->cdev.vidioc_g_input = avr32_isi_capture_g_input;
++ isi->cdev.vidioc_s_input = avr32_isi_capture_s_input;
++#ifdef DEBUG
++ isi->cdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
++#endif
++
++ /* Initialize v4l2 streaming device */
++ isi->vdev.fops = &avr32_isi_streaming_fops;
++ strcpy(isi->vdev.name, "atmel-isi");
++ isi->vdev.type = VFL_TYPE_GRABBER;
++ isi->vdev.type2 = VID_TYPE_CAPTURE;
++ isi->vdev.minor = -1;
++ isi->vdev.release = avr32_isi_stream_release;
++#ifdef DEBUG
++ isi->vdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
++#endif
++
++ isi->vdev.vidioc_querycap = avr32_isi_querycap;
++ isi->vdev.vidioc_enum_fmt_cap = avr32_isi_enum_fmt_cap;
++ isi->vdev.vidioc_try_fmt_cap = avr32_isi_try_fmt_cap;
++ isi->vdev.vidioc_g_fmt_cap = avr32_isi_g_fmt_cap;
++ isi->vdev.vidioc_s_fmt_cap = avr32_isi_s_fmt_cap;
++ isi->vdev.vidioc_enum_input = avr32_isi_enum_input;
++ isi->vdev.vidioc_g_input = avr32_isi_g_input;
++ isi->vdev.vidioc_s_input = avr32_isi_s_input;
++ isi->vdev.vidioc_queryctrl = avr32_isi_queryctrl;
++ isi->vdev.vidioc_g_ctrl = avr32_isi_g_ctrl;
++ isi->vdev.vidioc_s_ctrl = avr32_isi_s_ctrl;
++ isi->vdev.vidioc_querybuf = avr32_isi_querybuf;
++ isi->vdev.vidioc_reqbufs = avr32_isi_reqbufs;
++ isi->vdev.vidioc_qbuf = avr32_isi_qbuf;
++ isi->vdev.vidioc_dqbuf = avr32_isi_dqbuf;
++ isi->vdev.vidioc_streamon = avr32_isi_streamon;
++ isi->vdev.vidioc_streamoff = avr32_isi_streamoff;
++
++ isi->regs = ioremap(regs->start, regs->end - regs->start + 1);
++ if (!isi->regs) {
++ ret = -ENOMEM;
++ goto err_ioremap;
++ }
++
++ irq = platform_get_irq(pdev,0);
++ ret = request_irq(irq, isi_interrupt, 0, "isi", isi);
++ if (ret) {
++ dev_err(&pdev->dev, "unable to request irq %d\n", irq);
++ goto err_req_irq;
++ }
++ isi->irq = irq;
++
++ /* Allocate ISI capture buffer */
++ isi->capture_buf = dma_alloc_coherent(&pdev->dev,
++ capture_buffer_size,
++ &isi->capture_phys,
++ GFP_KERNEL);
++ if (!isi->capture_buf) {
++ ret = -ENOMEM;
++ dev_err(&pdev->dev, "failed to allocate capture buffer\n");
++ goto err_alloc_cbuf;
++ }
++
++ /* Allocate and initialize video buffers */
++ for(i=0;i < video_buffers; i++){
++ memset(&isi->video_buffer[i], 0, sizeof(struct frame_buffer));
++ isi->video_buffer[i].frame_buffer =
++ dma_alloc_coherent(&pdev->dev,
++ video_buffer_size,
++ (dma_addr_t *)
++ &(isi->video_buffer[i].fb_desc.fb_address),
++ GFP_KERNEL);
++ if(!isi->video_buffer[i].frame_buffer){
++ ret = -ENOMEM;
++ dev_err(&pdev->dev,
++ "failed to allocate video buffer\n");
++ goto err_alloc_vbuf;
++ }
++
++ isi->video_buffer[i].bytes_used = video_bytes_used;
++ isi->video_buffer[i].status = FRAME_UNUSED;
++ isi->video_buffer[i].index = i;
++
++#ifdef DEBUG
++ /* Put some color into the buffers */
++ /*
++ memset(isi->video_buffer[i].frame_buffer, (i*4)%0xFF,
++ video_buffer_size);
++ */
++#endif
++ }
++ /* set up frame buffer descriptor list for ISI module*/
++ /* FIXME
++ isi->fbd_list_start = dma_map_single(&pdev->dev,
++ &isi->video_buffer[0].fb_desc,
++ sizeof(struct fbd),
++ DMA_NONE);
++ */
++ isi->fbd_list_start = __pa(&isi->video_buffer[0].fb_desc);
++ for(i=0; i < (video_buffers - 1); i++){
++ isi->video_buffer[i].fb_desc.next_fbd_address =
++ /*
++ dma_map_single(&pdev->dev,
++ &isi->video_buffer[i+1].fb_desc,
++ sizeof(struct fbd),
++ DMA_NONE);*/
++ __pa(&isi->video_buffer[i+1]);
++ }
++ /* FIXME
++ * isi->video_buffer[i].fb_desc.next_fbd_address =
++ * isi->fbd_list_start;
++ */
++ isi->video_buffer[i].fb_desc.next_fbd_address =
++ __pa(&isi->video_buffer[0]);
++
++#ifdef DEBUG
++ for(i=0;i < video_buffers; i++){
++ pr_debug("atmel_isi: fbd at %08lx video buffer at \
++phys addr %08lx \n", __pa(&isi->video_buffer[i]),
++ (unsigned long) isi->video_buffer[i].fb_desc.fb_address);
++ }
++#endif
++ dev_info(&pdev->dev,
++ "capture buffer: %d bytes at %p (phys 0x%08x)\n",
++ capture_buffer_size, isi->capture_buf,
++ isi->capture_phys);
++
++ spin_lock_init(&isi->grabq_lock);
++ isi->grabq = kfifo_alloc(sizeof(int) * video_buffers, GFP_KERNEL,
++ &isi->grabq_lock);
++ if(IS_ERR(isi->grabq)){
++ dev_err(&pdev->dev, "fifo allocation failed\n");
++ goto err_fifo_alloc1;
++ }
++ spin_lock_init(&isi->doneq_lock);
++ isi->doneq = kfifo_alloc(sizeof(int) * video_buffers, GFP_KERNEL,
++ &isi->doneq_lock);
++ if(IS_ERR(isi->doneq)){
++ dev_err(&pdev->dev, "fifo allocation failed\n");
++ goto err_fifo_alloc2;
++ }
++
++ isi_writel(isi, CR1, ISI_BIT(DIS));
++
++ ret = video_register_device(&isi->cdev, VFL_TYPE_GRABBER, -1);
++ if(ret)
++ goto err_register1;
++
++ ret = video_register_device(&isi->vdev, VFL_TYPE_GRABBER, -1);
++ if (ret)
++ goto err_register2;
++
++ platform_set_drvdata(pdev, isi);
++
++ dev_info(&pdev->dev, "Atmel ISI V4L2 device at 0x%08lx\n",
++ (unsigned long)regs->start);
++
++ return 0;
++
++err_register2:
++ video_unregister_device(&isi->cdev);
++err_register1:
++ kfifo_free(isi->doneq);
++err_fifo_alloc2:
++ kfifo_free(isi->grabq);
++err_fifo_alloc1:
++err_alloc_vbuf:
++ while(i--)
++ dma_free_coherent(&pdev->dev, video_buffer_size,
++ isi->video_buffer[i].frame_buffer,
++ isi->video_buffer[i].fb_desc.fb_address);
++ dma_free_coherent(&pdev->dev, capture_buffer_size,
++ isi->capture_buf,
++ isi->capture_phys);
++err_alloc_cbuf:
++ free_irq(isi->irq, isi);
++err_req_irq:
++ iounmap(isi->regs);
++err_ioremap:
++ kfree(isi);
++err_alloc_isi:
++ clk_disable(hclk);
++ clk_disable(pclk);
++ clk_put(hclk);
++err_hclk:
++ clk_put(pclk);
++
++ return ret;
++
++}
++
++static struct platform_driver avr32_isi_driver = {
++ .probe = avr32_isi_probe,
++ .remove = __exit_p(avr32_isi_remove),
++ .driver = {
++ .name = "atmel_isi",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init avr32_isi_init(void)
++{
++ return platform_driver_probe(&avr32_isi_driver, &avr32_isi_probe);
++
++/*FIXME return platform_driver_register(&avr32_isi_driver);*/
++}
++
++
++static void __exit avr32_isi_exit(void)
++{
++ platform_driver_unregister(&avr32_isi_driver);
++}
++
++
++module_init(avr32_isi_init);
++module_exit(avr32_isi_exit);
++
++MODULE_AUTHOR("Lars Häring <lharing@atmel.com>");
++MODULE_DESCRIPTION("The V4L2 driver for AVR32 Linux");
++MODULE_LICENSE("GPL");
++MODULE_SUPPORTED_DEVICE("video");
+diff --git a/drivers/media/video/atmel-isi.h b/drivers/media/video/atmel-isi.h
+new file mode 100644
+index 0000000..2aa3c14
+--- /dev/null
++++ b/drivers/media/video/atmel-isi.h
+@@ -0,0 +1,252 @@
++/*
++ * Register definitions for the Atmel Image Sensor Interface.
++ *
++ * Copyright (C) 2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef __ASM_AVR32_ISI_H__
++#define __ASM_AVR32_ISI_H__
++
++#include <linux/videodev2.h>
++
++/* ISI register offsets */
++#define ISI_CR1 0x0000
++#define ISI_CR2 0x0004
++#define ISI_SR 0x0008
++#define ISI_IER 0x000c
++#define ISI_IDR 0x0010
++#define ISI_IMR 0x0014
++#define ISI_PSIZE 0x0020
++#define ISI_PDECF 0x0024
++#define ISI_PPFBD 0x0028
++#define ISI_CDBA 0x002c
++#define ISI_Y2R_SET0 0x0030
++#define ISI_Y2R_SET1 0x0034
++#define ISI_R2Y_SET0 0x0038
++#define ISI_R2Y_SET1 0x003c
++#define ISI_R2Y_SET2 0x0040
++
++/* Bitfields in CR1 */
++#define ISI_RST_OFFSET 0
++#define ISI_RST_SIZE 1
++#define ISI_DIS_OFFSET 1
++#define ISI_DIS_SIZE 1
++#define ISI_HSYNC_POL_OFFSET 2
++#define ISI_HSYNC_POL_SIZE 1
++#define ISI_VSYNC_POL_OFFSET 3
++#define ISI_VSYNC_POL_SIZE 1
++#define ISI_PIXCLK_POL_OFFSET 4
++#define ISI_PIXCLK_POL_SIZE 1
++#define ISI_EMB_SYNC_OFFSET 6
++#define ISI_EMB_SYNC_SIZE 1
++#define ISI_CRC_SYNC_OFFSET 7
++#define ISI_CRC_SYNC_SIZE 1
++#define ISI_FRATE_OFFSET 8
++#define ISI_FRATE_SIZE 3
++#define ISI_FULL_OFFSET 12
++#define ISI_FULL_SIZE 1
++#define ISI_THMASK_OFFSET 13
++#define ISI_THMASK_SIZE 2
++#define ISI_CODEC_ON_OFFSET 15
++#define ISI_CODEC_ON_SIZE 1
++#define ISI_SLD_OFFSET 16
++#define ISI_SLD_SIZE 8
++#define ISI_SFD_OFFSET 24
++#define ISI_SFD_SIZE 8
++
++/* Bitfields in CR2 */
++#define ISI_IM_VSIZE_OFFSET 0
++#define ISI_IM_VSIZE_SIZE 11
++#define ISI_GS_MODE_OFFSET 11
++#define ISI_GS_MODE_SIZE 1
++#define ISI_RGB_MODE_OFFSET 12
++#define ISI_RGB_MODE_SIZE 1
++#define ISI_GRAYSCALE_OFFSET 13
++#define ISI_GRAYSCALE_SIZE 1
++#define ISI_RGB_SWAP_OFFSET 14
++#define ISI_RGB_SWAP_SIZE 1
++#define ISI_COL_SPACE_OFFSET 15
++#define ISI_COL_SPACE_SIZE 1
++#define ISI_IM_HSIZE_OFFSET 16
++#define ISI_IM_HSIZE_SIZE 11
++#define ISI_YCC_SWAP_OFFSET 28
++#define ISI_YCC_SWAP_SIZE 2
++#define ISI_RGB_CFG_OFFSET 30
++#define ISI_RGB_CFG_SIZE 2
++
++/* Bitfields in SR */
++#define ISI_CDC_STATUS_OFFSET 3
++#define ISI_CDC_STATUS_SIZE 1
++
++/* Bitfields in SR/IER/IDR/IMR */
++#define ISI_SOF_OFFSET 0
++#define ISI_SOF_SIZE 1
++#define ISI_SOFTRST_OFFSET 2
++#define ISI_SOFTRST_SIZE 1
++#define ISI_CRC_ERR_OFFSET 4
++#define ISI_CRC_ERR_SIZE 1
++#define ISI_FO_C_OVF_OFFSET 5
++#define ISI_FO_C_OVF_SIZE 1
++#define ISI_FO_P_OVF_OFFSET 6
++#define ISI_FO_P_OVF_SIZE 1
++#define ISI_FO_P_EMP_OFFSET 7
++#define ISI_FO_P_EMP_SIZE 1
++#define ISI_FO_C_EMP_OFFSET 8
++#define ISI_FO_C_EMP_SIZE 1
++#define ISI_FR_OVR_OFFSET 9
++#define ISI_FR_OVR_SIZE 1
++
++/* Bitfields in PSIZE */
++#define ISI_PREV_VSIZE_OFFSET 0
++#define ISI_PREV_VSIZE_SIZE 10
++#define ISI_PREV_HSIZE_OFFSET 16
++#define ISI_PREV_HSIZE_SIZE 10
++
++/* Bitfields in PCDEF */
++#define ISI_DEC_FACTOR_OFFSET 0
++#define ISI_DEC_FACTOR_SIZE 8
++
++/* Bitfields in PPFBD */
++#define ISI_PREV_FBD_ADDR_OFFSET 0
++#define ISI_PREV_FBD_ADDR_SIZE 32
++
++/* Bitfields in CDBA */
++#define ISI_CODEC_DMA_ADDR_OFFSET 0
++#define ISI_CODEC_DMA_ADDR_SIZE 32
++
++/* Bitfields in Y2R_SET0 */
++#define ISI_Y2R_SET0_C3_OFFSET 24
++#define ISI_Y2R_SET0_C3_SIZE 8
++
++/* Bitfields in Y2R_SET1 */
++#define ISI_Y2R_SET1_C4_OFFSET 0
++#define ISI_Y2R_SET1_C4_SIZE 9
++#define ISI_YOFF_OFFSET 12
++#define ISI_YOFF_SIZE 1
++#define ISI_CROFF_OFFSET 13
++#define ISI_CROFF_SIZE 1
++#define ISI_CBOFF_OFFSET 14
++#define ISI_CBOFF_SIZE 1
++
++/* Bitfields in R2Y_SET0 */
++#define ISI_C0_OFFSET 0
++#define ISI_C0_SIZE 8
++#define ISI_C1_OFFSET 8
++#define ISI_C1_SIZE 8
++#define ISI_C2_OFFSET 16
++#define ISI_C2_SIZE 8
++#define ISI_ROFF_OFFSET 24
++#define ISI_ROFF_SIZE 1
++
++/* Bitfields in R2Y_SET1 */
++#define ISI_R2Y_SET1_C3_OFFSET 0
++#define ISI_R2Y_SET1_C3_SIZE 8
++#define ISI_R2Y_SET1_C4_OFFSET 8
++#define ISI_R2Y_SET1_C4_SIZE 8
++#define ISI_C5_OFFSET 16
++#define ISI_C5_SIZE 8
++#define ISI_GOFF_OFFSET 24
++#define ISI_GOFF_SIZE 1
++
++/* Bitfields in R2Y_SET2 */
++#define ISI_C6_OFFSET 0
++#define ISI_C6_SIZE 8
++#define ISI_C7_OFFSET 8
++#define ISI_C7_SIZE 8
++#define ISI_C8_OFFSET 16
++#define ISI_C8_SIZE 8
++#define ISI_BOFF_OFFSET 24
++#define ISI_BOFF_SIZE 1
++
++/* Constants for FRATE */
++#define ISI_FRATE_CAPTURE_ALL 0
++
++/* Constants for YCC_SWAP */
++#define ISI_YCC_SWAP_DEFAULT 0
++#define ISI_YCC_SWAP_MODE_1 1
++#define ISI_YCC_SWAP_MODE_2 2
++#define ISI_YCC_SWAP_MODE_3 3
++
++/* Constants for RGB_CFG */
++#define ISI_RGB_CFG_DEFAULT 0
++#define ISI_RGB_CFG_MODE_1 1
++#define ISI_RGB_CFG_MODE_2 2
++#define ISI_RGB_CFG_MODE_3 3
++
++/* Bit manipulation macros */
++#define ISI_BIT(name) \
++ (1 << ISI_##name##_OFFSET)
++#define ISI_BF(name,value) \
++ (((value) & ((1 << ISI_##name##_SIZE) - 1)) \
++ << ISI_##name##_OFFSET)
++#define ISI_BFEXT(name,value) \
++ (((value) >> ISI_##name##_OFFSET) \
++ & ((1 << ISI_##name##_SIZE) - 1))
++#define ISI_BFINS(name,value,old) \
++ (((old) & ~(((1 << ISI_##name##_SIZE) - 1) \
++ << ISI_##name##_OFFSET))\
++ | ISI_BF(name,value))
++
++/* Register access macros */
++#define isi_readl(port,reg) \
++ __raw_readl((port)->regs + ISI_##reg)
++#define isi_writel(port,reg,value) \
++ __raw_writel((value), (port)->regs + ISI_##reg)
++
++#define ATMEL_V4L2_VID_FLAGS ( V4L2_CAP_VIDEO_OUTPUT )
++
++struct atmel_isi;
++
++enum atmel_isi_pixfmt {
++ ATMEL_ISI_PIXFMT_GREY, /* Greyscale */
++ ATMEL_ISI_PIXFMT_CbYCrY,
++ ATMEL_ISI_PIXFMT_CrYCbY,
++ ATMEL_ISI_PIXFMT_YCbYCr,
++ ATMEL_ISI_PIXFMT_YCrYCb,
++ ATMEL_ISI_PIXFMT_RGB24,
++ ATMEL_ISI_PIXFMT_BGR24,
++ ATMEL_ISI_PIXFMT_RGB16,
++ ATMEL_ISI_PIXFMT_BGR16,
++ ATMEL_ISI_PIXFMT_GRB16, /* G[2:0] R[4:0]/B[4:0] G[5:3] */
++ ATMEL_ISI_PIXFMT_GBR16, /* G[2:0] B[4:0]/R[4:0] G[5:3] */
++ ATMEL_ISI_PIXFMT_RGB24_REV,
++ ATMEL_ISI_PIXFMT_BGR24_REV,
++ ATMEL_ISI_PIXFMT_RGB16_REV,
++ ATMEL_ISI_PIXFMT_BGR16_REV,
++ ATMEL_ISI_PIXFMT_GRB16_REV, /* G[2:0] R[4:0]/B[4:0] G[5:3] */
++ ATMEL_ISI_PIXFMT_GBR16_REV, /* G[2:0] B[4:0]/R[4:0] G[5:3] */
++};
++
++struct atmel_isi_format {
++ struct v4l2_pix_format pix;
++ enum atmel_isi_pixfmt input_format;
++};
++
++struct atmel_isi_camera {
++ const char *name;
++ struct module *owner;
++ struct list_head list;
++ unsigned int hsync_act_low:1;
++ unsigned int vsync_act_low:1;
++ unsigned int pclk_act_falling:1;
++ unsigned int has_emb_sync:1;
++ /* ISI supports up to 17 formats */
++ unsigned int pixelformats[17];
++ int (*get_format)(struct atmel_isi_camera *cam,
++ struct atmel_isi_format *fmt);
++ int (*set_format)(struct atmel_isi_camera *cam,
++ struct atmel_isi_format *fmt);
++ int (*start_capture)(struct atmel_isi_camera *cam);
++ int (*stop_capture)(struct atmel_isi_camera *cam);
++ struct atmel_isi *isi;
++};
++
++extern int atmel_isi_register_camera(struct atmel_isi_camera *cam);
++extern void atmel_isi_unregister_camera(struct atmel_isi_camera *cam);
++
++
++#endif /* __ASM_AVR32_ISI_H__ */
++
+diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
+index 7558484..a8cdf42 100644
+--- a/drivers/media/video/Kconfig
++++ b/drivers/media/video/Kconfig
+@@ -13,6 +13,20 @@ menuconfig VIDEO_CAPTURE_DRIVERS
+
+ if VIDEO_CAPTURE_DRIVERS && VIDEO_DEV
+
++config VIDEO_AVR32_ISI
++ tristate "AVR32 video support"
++ depends on VIDEO_DEV
++ ---help---
++ This module makes the AVR32 Image Sensor Interface available
++
++config VIDEO_MT9M112
++ tristate "Micron MT9M112 camera"
++ default n
++ depends on VIDEO_AVR32_ISI && I2C
++ ---help---
++ This will add support for the Micron MT9M112 camera.
++ as a v4l2 device.
++
+ config VIDEO_ADV_DEBUG
+ bool "Enable advanced debug functionality"
+ default n
+diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
+index 78e38d0..3156969 100644
+--- a/drivers/media/video/Makefile
++++ b/drivers/media/video/Makefile
+@@ -77,7 +77,8 @@ obj-$(CONFIG_VIDEO_HEXIUM_ORION) += hexium_orion.o
+ obj-$(CONFIG_VIDEO_HEXIUM_GEMINI) += hexium_gemini.o
+ obj-$(CONFIG_VIDEO_DPC) += dpc7146.o
+ obj-$(CONFIG_TUNER_3036) += tuner-3036.o
+ obj-$(CONFIG_VIDEO_AVR32_ISI) += atmel-isi.o
++obj-$(CONFIG_VIDEO_MT9M112) += tm13m3.o
+
+ obj-$(CONFIG_VIDEO_TUNER) += tuner.o
+ obj-$(CONFIG_VIDEO_BUF) += video-buf.o
+diff --git a/drivers/media/video/tm13m3.c b/drivers/media/video/tm13m3.c
+new file mode 100644
+index 0000000..42f0fd3
+--- /dev/null
++++ b/drivers/media/video/tm13m3.c
+@@ -0,0 +1,631 @@
++/*
++ * Micron Mt9M112 camera driver.
++ *
++ * Copyright (C) 2005-2007 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++//#define DEBUG
++
++#include <linux/clk.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/device.h>
++#include <linux/list.h>
++#include <linux/delay.h>
++#include <linux/i2c.h>
++
++#include <linux/err.h>
++#include <asm/gpio.h>
++#include <asm/arch/board.h>
++#include <asm/arch/at32ap700x.h>
++
++#include "atmel-isi.h"
++
++/* camera standby pin */
++#define CAM_STANDBY GPIO_PIN_PA(9)
++/* camera reset pin */
++#define CAM_RESET GPIO_PIN_PA(8)
++
++/*! Maximum number of pixels in a row */
++#define TM13M3_MAX_WIDTH 1280
++/*! Maximum number of rows */
++#define TM13M3_MAX_HEIGHT 1024
++
++/*! Clock for image sensor CLKIN signal */
++static char mclk_name[32] = "gclk0";
++/*! Parent clock of gclk0
++ * Either osc0 or pll0
++ * We use osc0 with 20MHz quarz.
++ */
++static char mclk_parent_name[32] = "osc0";
++
++static struct clk *mclk;
++static struct clk *mclk_parent;
++module_param_string(mclk, mclk_name, sizeof(mclk_name), 0644);
++MODULE_PARM_DESC(mclk, "Name of the clock used as camera clock input");
++
++module_param_string(mclk_parent, mclk_parent_name,
++ sizeof(mclk_parent_name), 0644);
++MODULE_PARM_DESC(mclk, "Name of mclk parent clock");
++
++
++/* Register adresses */
++#define CHIP_VERSION 0x0
++#define PROGRAM_CONTROL 0x2CC
++#define READ_MODE_CONTEXT_B 0x20
++#define CONTEXT_CONTROL 0xC8
++#define COLUMN_WIDTH 0x4
++#define HORIZONTAL_OUTPUT_SIZE_B 0x1A1
++#define VERTICAL_OUTPUT_SIZE_B 0x1A4
++#define ROW_WIDTH 0x3
++#define PAGE_MAP 0xF0
++#define OUTPUT_FORMAT_CONTROL_A 0x13A
++#define HORIZONTAL_ZOOM 0x1A6
++#define VERTICAL_ZOOM 0x1A9
++#define PLL_CONTROL_1 0x66
++#define PLL_CONTROL_2 0x67
++#define CLOCK_CONTROL 0x65
++
++/* Chip ID stored in CHIP_VERSION register */
++#define MT9M112_CHIP_ID 0x148C
++/* I2C address of camera module */
++#define I2C_TM13M3 0x5D
++
++static unsigned short normal_i2c[] = {
++ I2C_TM13M3,
++ I2C_CLIENT_END
++};
++I2C_CLIENT_INSMOD;
++
++#ifdef CONFIG_DEBUG_FS
++struct reg_dbg {
++ struct tm13m3 *is;
++ struct dentry *dentry;
++ unsigned int offset;
++};
++#endif
++
++struct tm13m3 {
++ struct mutex mutex;
++ u16 current_page;
++ u32 current_format;
++ u16 pll_avr_ctrl;
++ struct clk *mclk;
++ struct i2c_client client;
++ struct atmel_isi_camera cam;
++#ifdef CONFIG_DEBUG_FS
++ struct dentry *debugfs_root;
++ struct reg_dbg debugfs_reg[37];
++#endif
++};
++
++
++#define to_tm13m3(cam) container_of(cam, struct tm13m3, cam)
++
++static struct i2c_driver tm13m3_driver;
++
++static int tm13m3_write_16(struct tm13m3 *is, u16 reg, u16 value)
++{
++ int ret = 0;
++ u16 register_page = 0;
++
++ register_page = reg >> 8;
++
++ if ((register_page != is->current_page)
++ && (reg != PAGE_MAP)){
++
++ if( 0 <= (ret = i2c_smbus_write_word_data(&is->client, PAGE_MAP, cpu_to_le16(register_page))))
++ is->current_page = register_page;
++ }
++
++ if(ret >= 0){
++ ret = i2c_smbus_write_word_data(&is->client, (u8) reg, cpu_to_le16(value));
++ }
++ return ret;
++}
++
++static int tm13m3_read_16(struct tm13m3 *is, u16 reg)
++{
++ int ret = 0;
++ u16 register_page = 0;
++
++ register_page = reg >> 8;
++
++ if ((register_page != is->current_page)
++ && (reg != PAGE_MAP)){
++
++ if( 0 <= (ret = i2c_smbus_write_word_data(&is->client, PAGE_MAP, cpu_to_le16(register_page))))
++ is->current_page = register_page;
++ }
++
++if(ret >= 0){
++ ret = i2c_smbus_read_word_data(&is->client, (u8) reg);
++ }
++
++ if (ret < 0)
++ return -EIO;
++
++ return le16_to_cpu(ret);
++}
++
++#ifdef CONFIG_DEBUG_FS
++#include <linux/debugfs.h>
++#include <linux/uaccess.h>
++
++struct tm13m3_reg {
++ u16 address;
++ const char *name;
++};
++
++static struct tm13m3_reg tm13m3_registers[38] = {
++ { .address = CHIP_VERSION, .name = "chip_version"},
++ { .address = 0x1, .name = "row_start"},
++ { .address = 0x2, .name = "column_start"},
++ { .address = 0x3, .name = "row_width"},
++ { .address = 0x4, .name = "column_width"},
++ { .address = 0x5, .name = "horizontal_blanking_b"},
++ { .address = 0x6, .name = "vertical_blanking_b"},
++ { .address = 0x7, .name = "horizontal_blanking_a"},
++ { .address = 0x8, .name = "vertical_blanking_a"},
++ { .address = 0x0D, .name = "reset"},
++ { .address = 0x20, .name = "read_mode_context_b"},
++ { .address = 0x21, .name = "read_mode_context_a"},
++ { .address = 0x22, .name = "dark_col_row"},
++ { .address = 0x65, .name = "clock_control"},
++ { .address = 0x66, .name = "pll_control_1"},
++ { .address = 0x67, .name = "pll_control_2"},
++ { .address = 0xC8, .name = "context_control"},
++ { .address = 0x106, .name = "mode_control"},
++ { .address = 0x108, .name = "format_control"},
++ { .address = 0x13A, .name = "output_format_control_a"},
++ { .address = 0x148, .name = "test_pattern_generator"},
++ { .address = 0x19B, .name = "output_format_control_b"},
++ { .address = 0x1A1, .name = "horizontal_output_size_b"},
++ { .address = 0x1A4, .name = "vertical_output_size_b"},
++ { .address = 0x1A5, .name = "horizontal_pan"},
++ { .address = 0x1A6, .name = "horizontal_zoom"},
++ { .address = 0x1A7, .name = "horizontal_output_size_a"},
++ { .address = 0x1A8, .name = "vertical_pan"},
++ { .address = 0x1A9, .name = "vertical_zoom"},
++ { .address = 0x1AA, .name = "vertical_output_size_a"},
++ { .address = 240, .name = "page_map"},
++ { .address = 0x2C8, .name = "global_context_control"},
++ { .address = 0x2CB, .name = "program_advance"},
++ { .address = 0x2CC, .name = "program_control"},
++ { .address = 0x2D2, .name = "default_program_conf"},
++ { .address = 0x2D3, .name = "user_global_context_control"},
++ { .address = (0x100 | 0), .name = "module_id"},
++ { .address = (0x200 | 2), .name = "mode_control"},
++};
++
++static u64 reg_dbg_get(void *data)
++{
++ struct reg_dbg *reg = data;
++ int ret = 0;
++
++ mutex_lock(&reg->is->mutex);
++ ret = tm13m3_read_16(reg->is, tm13m3_registers[reg->offset].address);
++ mutex_unlock(&reg->is->mutex);
++
++ if (ret < 0) {
++ printk("%s: failed to read reg 0x%02x: %d\n",
++ reg->is->cam.name,
++ tm13m3_registers[reg->offset].address, ret);
++ return ~0ULL;
++ }
++ return ret;
++}
++
++static void reg_dbg_set(void *data, u64 val)
++{
++ struct reg_dbg *reg = data;
++ int ret = 0;
++
++ mutex_lock(&reg->is->mutex);
++ ret = tm13m3_write_16(reg->is, tm13m3_registers[reg->offset].address, (u16) val);
++ mutex_unlock(&reg->is->mutex);
++
++ if (ret < 0){
++ printk("%s: failed to write reg 0x%02x: %d\n",
++ reg->is->cam.name,
++ tm13m3_registers[reg->offset].address, ret);
++ }
++}
++DEFINE_SIMPLE_ATTRIBUTE(reg_dbg_fops, reg_dbg_get, reg_dbg_set, "%04llx\n");
++
++static void tm13m3_init_debugfs(struct tm13m3 *is)
++{
++ struct dentry *root, *reg;
++ unsigned int i;
++
++ root = debugfs_create_dir(is->cam.name, NULL);
++ if (IS_ERR(root) || !root)
++ goto err_root;
++ is->debugfs_root = root;
++
++ for (i = 0; i < ARRAY_SIZE(is->debugfs_reg); i++) {
++ if (!tm13m3_registers[i].name)
++ continue;
++
++ is->debugfs_reg[i].is = is;
++ is->debugfs_reg[i].offset = i;
++
++ reg = debugfs_create_file(tm13m3_registers[i].name, S_IRUGO | S_IWUSR,
++ root, &is->debugfs_reg[i],
++ &reg_dbg_fops);
++ if (!reg)
++ goto err_reg;
++ is->debugfs_reg[i].dentry = reg;
++ }
++
++ return;
++
++err_reg:
++ while (i--)
++ debugfs_remove(is->debugfs_reg[i].dentry);
++ debugfs_remove(root);
++err_root:
++ is->debugfs_root = NULL;
++ printk(KERN_ERR "%s: failed to initialize debugfs\n",
++ is->cam.name);
++}
++
++static void tm13m3_cleanup_debugfs(struct tm13m3 *is)
++{
++ unsigned int i;
++
++ if (is->debugfs_root) {
++ for (i = 0; i < ARRAY_SIZE(is->debugfs_reg); i++)
++ debugfs_remove(is->debugfs_reg[i].dentry);
++ debugfs_remove(is->debugfs_root);
++ }
++}
++#else
++static inline void tm13m3_init_debugfs(struct tm13m3 *is)
++{
++
++}
++
++static inline void tm13m3_cleanup_debugfs(struct tm13m3 *is)
++{
++
++}
++#endif /* CONFIG_DEBUG_FS */
++
++static int tm13m3_get_format(struct atmel_isi_camera *cam,
++ struct atmel_isi_format *fmt)
++{
++ struct tm13m3 *is = to_tm13m3(cam);
++ int ret = 0;
++
++ fmt->pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
++ fmt->input_format = ATMEL_ISI_PIXFMT_CbYCrY;
++ fmt->input_format = is->current_format;
++
++ fmt->pix.width = 320;
++ fmt->pix.height = 240;
++
++ return ret;
++}
++
++static int tm13m3_set_format(struct atmel_isi_camera *cam,
++ struct atmel_isi_format *fmt)
++{
++ struct tm13m3 *is = to_tm13m3(cam);
++ int ret = 0;
++
++ fmt->pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
++/*
++ switch(fmt->input_format){
++ case ATMEL_ISI_PIXFMT_CbYCrY:
++ is->current_format = ATMEL_ISI_PIXFMT_CbYCrY;
++ break;
++ case ATMEL_ISI_PIXFMT_YCbYCr:
++ is->current_format = ATMEL_ISI_PIXFMT_YCbYCr;
++ break;
++ case ATMEL_ISI_PIXFMT_CrYCbY:
++ is->current_format = ATMEL_ISI_PIXFMT_CrYCbY;
++ break;
++ case ATMEL_ISI_PIXFMT_YCrYCb:
++ is->current_format = ATMEL_ISI_PIXFMT_YCrYCb;
++ break;
++ default:
++ // force a valid format
++ fmt->input_format = ATMEL_ISI_PIXFMT_CbYCrY;
++ is->current_format = ATMEL_ISI_PIXFMT_CbYCrY;
++ pr_debug("%s: Not supported format, forcing default format\n",
++ cam->name);
++ break;
++ }
++*/
++ fmt->input_format = ATMEL_ISI_PIXFMT_CrYCbY;
++ is->current_format = ATMEL_ISI_PIXFMT_CrYCbY;
++
++ /* adjust picture width and height */
++ if (fmt->pix.width > TM13M3_MAX_WIDTH)
++ fmt->pix.width = TM13M3_MAX_WIDTH;
++ if (fmt->pix.height > TM13M3_MAX_HEIGHT)
++ fmt->pix.height = TM13M3_MAX_HEIGHT;
++
++ //tm13m3_write_16(is, COLUMN_WIDTH, fmt->pix.width);
++ //tm13m3_write_16(is, ROW_WIDTH, fmt->pix.height);
++ //tm13m3_write_16(is, HORIZONTAL_ZOOM, fmt->pix.width);
++ //tm13m3_write_16(is, VERTICAL_ZOOM, fmt->pix.height);
++
++ //tm13m3_write_16(is, HORIZONTAL_OUTPUT_SIZE_B, fmt->pix.width);
++ //tm13m3_write_16(is, VERTICAL_OUTPUT_SIZE_B, fmt->pix.height);
++
++ /* FIXME Set context output width needed ??*/
++
++ pr_debug("%s: set_format %ux%u\n", cam->name,
++ fmt->pix.width, fmt->pix.height);
++ return ret;
++}
++
++static void tm13m3_reset_soft(struct tm13m3 *is)
++{
++ tm13m3_write_16(is, 0x0D, 0x0001);
++ /*FIXME test if toggling is really needed */
++ tm13m3_write_16(is, 0x0D, 0x0000);
++}
++
++static void tm13m3_reset_hardware(struct tm13m3 *is)
++{
++ gpio_set_value(CAM_RESET, 0);
++ //FIXME : set correct reset interval usleep();
++ gpio_set_value(CAM_RESET, 1);
++}
++
++static int tm13m3_start_capture(struct atmel_isi_camera *cam)
++{
++ struct tm13m3 *is = to_tm13m3(cam);
++ int ret = 0;
++
++ return ret;
++}
++
++static int tm13m3_stop_capture(struct atmel_isi_camera *cam)
++{
++ struct tm13m3 *is = to_tm13m3(cam);
++ int ret = 0;
++
++
++ return ret;
++}
++
++static int tm13m3_init_hardware(struct tm13m3 *is)
++{
++ int chip_id;
++
++ tm13m3_reset_hardware(is);
++ /* set register page to reset value*/
++ is->current_page = 0;
++ is->current_format = ATMEL_ISI_PIXFMT_CbYCrY;
++
++ pr_debug("tm13m3: Init sensor\n");
++ /* Try to identify the camera */
++ chip_id = tm13m3_read_16(is, CHIP_VERSION);
++ if (chip_id < 0)
++ return -EIO;
++
++ if (chip_id != MT9M112_CHIP_ID) {
++ printk(KERN_ERR "%s: Unknown chip ID 0x%04x\n",
++ is->cam.name, chip_id);
++ return -ENODEV;
++ }
++#if 0
++ /* Configure pll for 36,8 MHz with CLKIN = 20MHz
++ * fout = fclkin * M * 1 /( 2* (N+1) * (P+1))
++ */
++ /* Set P = 2 */
++ tm13m3_write_16(is, PLL_CONTROL_2, 0x0502);
++ /* M = 22, N = 1*/
++ tm13m3_write_16(is, PLL_CONTROL_1, 0x1601);
++ /* wake up pll*/
++ tm13m3_write_16(is, CLOCK_CONTROL, 0x8000);
++ /* wait until pll has stabilized */
++ mdelay(1);
++ /* set pll as master clock*/
++ tm13m3_write_16(is, CLOCK_CONTROL, 0x0000);
++
++#endif
++ /* Set semi-auto mode program mode*/
++ tm13m3_write_16(is, PROGRAM_CONTROL, 0x0010);
++ /* set context B read mode */
++ tm13m3_write_16(is, READ_MODE_CONTEXT_B, 0x0100);
++ /* switch to read+resize context B */
++ tm13m3_write_16(is, CONTEXT_CONTROL, 0x0408);
++ /* set ITU-R BT.656 codes */
++ tm13m3_write_16(is, OUTPUT_FORMAT_CONTROL_A, 0x0A00);
++ /* set sensor image size */
++ tm13m3_write_16(is, HORIZONTAL_ZOOM, 320);
++ tm13m3_write_16(is, VERTICAL_ZOOM, 240);
++ tm13m3_write_16(is, HORIZONTAL_OUTPUT_SIZE_B, 320);
++ tm13m3_write_16(is, VERTICAL_OUTPUT_SIZE_B, 240);
++ tm13m3_write_16(is, COLUMN_WIDTH, 320);
++ tm13m3_write_16(is, ROW_WIDTH, 240);
++ return 0;
++}
++static int tm13m3_detect_client(struct i2c_adapter *adapter,
++ int address, int kind)
++{
++ struct i2c_client *client;
++ struct tm13m3 *is;
++ int ret;
++
++ pr_debug("tm13m3: detecting client on address 0x%x\n", address);
++
++ /* Check if the adapter supports the needed features */
++ if (!i2c_check_functionality(adapter,
++ (I2C_FUNC_SMBUS_READ_BYTE_DATA
++ | I2C_FUNC_SMBUS_WRITE_BYTE_DATA
++ | I2C_FUNC_SMBUS_READ_WORD_DATA
++ | I2C_FUNC_SMBUS_WRITE_WORD_DATA)))
++ return 0;
++
++ is = kzalloc(sizeof(struct tm13m3), GFP_KERNEL);
++ if (!is)
++ return -ENOMEM;
++
++ client = &is->client;
++ client->addr = address;
++ client->adapter = adapter;
++ client->driver = &tm13m3_driver;
++ strcpy(client->name, "tm13m3");
++
++ is->cam.name = client->name;
++ is->cam.hsync_act_low = 0;
++ is->cam.vsync_act_low = 0;
++ is->cam.pclk_act_falling = 0;
++ /* no SAV/EAV sync -> HSYNC and VSYNC used */
++ /*is->cam.has_emb_sync = 0;*/
++ is->cam.has_emb_sync = 1;
++
++ is->cam.get_format = tm13m3_get_format;
++ is->cam.set_format = tm13m3_set_format;
++ is->cam.start_capture = tm13m3_start_capture;
++ is->cam.stop_capture = tm13m3_stop_capture;
++
++ mutex_init(&is->mutex);
++
++ is->mclk = clk_get(NULL, mclk_name);
++ if (IS_ERR(is->mclk)) {
++ ret = PTR_ERR(is->mclk);
++ goto err_clk;
++ }
++ clk_enable(is->mclk);
++
++ ret = i2c_attach_client(client);
++ if (ret)
++ goto err_attach;
++
++ i2c_set_clientdata(client, is);
++
++ ret = tm13m3_init_hardware(is);
++ if (ret)
++ goto err_init_hw;
++
++ /* We're up and running. Notify the ISI driver */
++ ret = atmel_isi_register_camera(&is->cam);
++ if (ret)
++ goto err_register;
++
++ printk(KERN_INFO "TM13M3 Image Sensor at %s:0x%02x\n",
++ adapter->name, address);
++
++ tm13m3_init_debugfs(is);
++
++ return 0;
++
++err_register:
++err_init_hw:
++// at76_reset_hardware(is);
++ i2c_detach_client(client);
++err_attach:
++ clk_disable(is->mclk);
++ clk_put(is->mclk);
++err_clk:
++ kfree(is);
++ return ret;
++}
++
++static int tm13m3_attach_adapter(struct i2c_adapter *adapter)
++{
++ pr_debug("tm13m3: starting probe for adapter %s (%u)\n",
++ adapter->name, adapter->id);
++ return i2c_probe(adapter, &addr_data, &tm13m3_detect_client);
++}
++
++static int tm13m3_detach_client(struct i2c_client *client)
++{
++ struct tm13m3 *is = i2c_get_clientdata(client);
++ int ret;
++
++ tm13m3_cleanup_debugfs(is);
++ atmel_isi_unregister_camera(&is->cam);
++
++ tm13m3_reset_hardware(is);
++
++ ret = i2c_detach_client(client);
++ if (ret)
++ return ret;
++
++ clk_disable(is->mclk);
++ clk_put(is->mclk);
++ kfree(is);
++
++ return 0;
++}
++
++static struct i2c_driver tm13m3_driver = {
++ .driver = {
++ .name = "tm13m3",
++ },
++ .id = I2C_DRIVERID_TM13M3,
++ .attach_adapter = &tm13m3_attach_adapter,
++ .detach_client = &tm13m3_detach_client,
++};
++
++static int __init tm13m3_init(void)
++{
++ /*
++ * Set up the master clock, if available. If clk_get() fails,
++ * this hopefully means that the board generates a suitable
++ * master clock some other way, which is fine by us.
++ *
++ * We need to do this before probing the i2c bus, as the
++ * camera won't ack any messages when it doesn't have a clock.
++ */
++ mclk_parent = clk_get(NULL, mclk_parent_name);
++ if (!IS_ERR(mclk_parent))
++ clk_enable(mclk_parent);
++ else {
++ mclk_parent = NULL;
++ pr_debug("tm13m3: No parent clock available\n");
++ }
++
++ mclk = clk_get(NULL, mclk_name);
++ if (!IS_ERR(mclk)) {
++ if (mclk_parent)
++ clk_set_parent(mclk, mclk_parent);
++
++ clk_set_rate(mclk, 27000000);
++ clk_enable(mclk);
++ } else {
++ mclk = NULL;
++ pr_debug("tm13m3: No clock set\n");
++ }
++
++ gpio_direction_output(CAM_STANDBY, 0);
++ /* Reset sequence */
++ gpio_direction_output(CAM_RESET, 0);
++ udelay(4);
++ gpio_set_value(CAM_RESET, 1);
++
++ return i2c_add_driver(&tm13m3_driver);
++
++}
++module_init(tm13m3_init);
++
++static void __exit tm13m3_exit(void)
++{
++ if (mclk) {
++ clk_disable(mclk);
++ clk_put(mclk);
++ }
++ if (mclk_parent) {
++ clk_disable(mclk_parent);
++ clk_put(mclk_parent);
++ }
++ i2c_del_driver(&tm13m3_driver);
++}
++module_exit(tm13m3_exit);
++
++MODULE_DESCRIPTION("Atmel Image Sensor Interface Driver");
++MODULE_AUTHOR("Lars Häring <lharing@atmel.com>");
++MODULE_LICENSE("GPL");
+>From dc4286f6020df0bf791228cdfe7d4ea58e2f46ef Mon Sep 17 00:00:00 2001
+From: Haavard Skinnemoen <hskinnemoen@atmel.com>
+Date: Wed, 17 Jan 2007 13:47:40 +0100
+Subject: [PATCH] AP7000: Add platform_device for ISI
+
+Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
+---
+ arch/avr32/mach-at32ap/at32ap700x.c | 47 +++++++++++++++++++++++++++++++++
+ include/asm-avr32/arch-at32ap/board.h | 1 +
+ 2 files changed, 48 insertions(+), 0 deletions(-)
+
+diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
+index 1130c8a..4184296 100644
+--- a/arch/avr32/mach-at32ap/at32ap700x.c
++++ b/arch/avr32/mach-at32ap/at32ap700x.c
+@@ -1396,6 +1396,51 @@ at32_add_device_abdac(unsigned int id)
+ }
+
+ /* --------------------------------------------------------------------
++ * ISI
++ * -------------------------------------------------------------------- */
++static struct resource atmel_isi0_resource[] = {
++ PBMEM(0xfff02c00),
++ IRQ(30),
++};
++DEFINE_DEV(atmel_isi, 0);
++DEV_CLK(hclk, atmel_isi0, hsb, 5);
++DEV_CLK(pclk, atmel_isi0, pbb, 11);
++
++struct platform_device *__init
++at32_add_device_isi(unsigned int id)
++{
++ struct platform_device *pdev;
++
++ switch (id) {
++ case 0:
++ pdev = &atmel_isi0_device;
++ select_peripheral(PB(0), PERIPH_A, 0); /* DATA0 */
++ select_peripheral(PB(1), PERIPH_A, 0); /* DATA1 */
++ select_peripheral(PB(2), PERIPH_A, 0); /* DATA2 */
++ select_peripheral(PB(3), PERIPH_A, 0); /* DATA3 */
++ select_peripheral(PB(4), PERIPH_A, 0); /* DATA4 */
++ select_peripheral(PB(5), PERIPH_A, 0); /* DATA5 */
++ select_peripheral(PB(6), PERIPH_A, 0); /* DATA6 */
++ select_peripheral(PB(7), PERIPH_A, 0); /* DATA7 */
++ select_peripheral(PB(11), PERIPH_B, 0); /* DATA8 */
++ select_peripheral(PB(12), PERIPH_B, 0); /* DATA9 */
++ select_peripheral(PB(13), PERIPH_B, 0); /* DATA10 */
++ select_peripheral(PB(14), PERIPH_B, 0); /* DATA11 */
++ select_peripheral(PB(8), PERIPH_A, 0); /* HSYNC */
++ select_peripheral(PB(9), PERIPH_A, 0); /* VSYNC */
++ select_peripheral(PB(10), PERIPH_A, 0); /* PCLK */
++ break;
++
++ default:
++ return NULL;
++ }
++
++ platform_device_register(pdev);
++
++ return pdev;
++}
++
++/* --------------------------------------------------------------------
+ * GCLK
+ * -------------------------------------------------------------------- */
+ static struct clk gclk0 = {
+@@ -1493,6 +1538,8 @@ struct clk *at32_clock_list[] = {
+ &gclk2,
+ &gclk3,
+ &gclk4,
++ &atmel_isi0_hclk,
++ &atmel_isi0_pclk,
+ };
+ unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
+
+diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
+index 9b36eb8..931f5af 100644
+--- a/include/asm-avr32/arch-at32ap/board.h
++++ b/include/asm-avr32/arch-at32ap/board.h
+@@ -55,6 +55,7 @@ at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+
+ struct platform_device *at32_add_device_ac97c(unsigned int id);
+ struct platform_device *at32_add_device_abdac(unsigned int id);
++struct platform_device *at32_add_device_isi(unsigned int id);
+
+ /* depending on what's hooked up, not all SSC pins will be used */
+ #define ATMEL_SSC_TK 0x01
+--
+1.5.2.3
+
+>From 6bac229e6999ce8e761baf97975fc5db774721fa Mon Sep 17 00:00:00 2001
+From: Haavard Skinnemoen <hskinnemoen@atmel.com>
+Date: Wed, 21 Feb 2007 15:35:44 +0100
+Subject: [PATCH] NGW100: Wire up the ISI
+
+Since the NGW100 doesn't actually have a camera on board, this patch
+merely serves as an example on how you might wire up the ISI on a
+board that does have a camera.
+---
+ arch/avr32/boards/atngw100/setup.c | 5 +++++
+ 1 files changed, 5 insertions(+), 0 deletions(-)
+
+diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
+index d649974..6ca98bb 100644
+--- a/arch/avr32/boards/atngw100/setup.c
++++ b/arch/avr32/boards/atngw100/setup.c
+@@ -178,6 +178,11 @@ static int __init atngw100_init(void)
+ at32_add_device_twi(0);
+ #endif
+
++ at32_add_device_isi(0);
++
++ /* Master clock for the camera (GCLK0) */
++ at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
++
+ return 0;
+ }
+ postcore_initcall(atngw100_init);
+--
+1.5.2.3
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