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+/*
+ * 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.
+ */
+
+#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/wait.h>
+#include <linux/i2c.h>
+#include <linux/kfifo.h>
+#include <linux/time.h>
+#include<linux/io.h>
+
+#include <mach/board.h>
+#include <mach/cpu.h>
+
+#include <media/atmel-isi.h>
+
+#define ATMEL_ISI_VERSION KERNEL_VERSION(0, 1, 0)
+
+/* Default ISI capture buffer size */
+#define ISI_CAPTURE_BUFFER_SIZE (800*600*2)
+/* Default ISI video frame size ie qvga */
+#define ISI_VIDEO_BUFFER_SIZE (320*240*2)
+/* Default number of ISI video buffers */
+/*(if qvga we can use 4 buffers)*/
+#define ISI_VIDEO_BUFFERS 4
+/* Interrupt mask for a single capture */
+#define ISI_V2_CAPTURE_MASK (ISI_BIT(V2_VSYNC) \
+ | ISI_BIT(V2_CXFR_DONE) | ISI_BIT(V2_PXFR_DONE))
+/* ISI capture buffer size */
+static int capture_buffer_size = ISI_CAPTURE_BUFFER_SIZE;
+/* Number of buffers used for streaming video */
+static int video_buffers = ISI_VIDEO_BUFFERS;
+static int video_buffer_size = ISI_VIDEO_BUFFER_SIZE;
+
+static int input_format = ATMEL_ISI_PIXFMT_CbYCrY;
+static u8 has_emb_sync, emb_crc_sync, hsync_act_low;
+static u8 vsync_act_low, pclk_act_falling, isi_full_mode;
+/* Preview path horizontal size */
+static int prev_hsize = 320;
+/* Preview path vertical size */
+static int prev_vsize = 240;
+
+/* Input image horizontal size */
+static int image_hsize = 320;
+/* Input image vertical size */
+static int image_vsize = 240;
+
+static struct timeval start_time;
+/* Frame rate scaler
+ * 1 = capture every second frame
+ * 2 = capture every third frame
+ * ...
+ * */
+static int frame_rate_scaler;
+
+/* 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;
+
+/* Declare static vars that will be used as parameters */
+/* 0 <-> dev/video0, 1 <-> dev/video1, -1 <-> first free */
+static int video_nr = -1;
+
+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_param(video_nr, int, 0444);
+
+/* 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;
+#if defined(CONFIG_ARCH_AT91SAM9G45) || defined(CONFIG_ARCH_AT91SAM9M10)
+ /* DMA Control Register(new: only in HISI2) */
+ u32 dma_ctrl;
+#endif
+ /* 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];
+ /* 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
+ */
+ int head, tail;
+ /* 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_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;
+
+ /* v4l2 device */
+ struct device *dev;
+ struct v4l2_device v4l2_dev;
+ /* sub devices */
+ struct v4l2_subdev *sd;
+ /* Video device for capturing */
+ struct video_device cdev;
+ /* Video device for streaming */
+ struct video_device vdev;
+
+ /* i2c subdevice board info */
+ struct i2c_board_info board_info;
+ struct i2c_adapter *i2c_adapter;
+
+ 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;
+};
+
+
+static void atmel_isi_set_default_format(struct atmel_isi *isi)
+{
+
+ isi->format.pix.width = (u32)min((u32)2048l, (u32)image_hsize);
+ isi->format.pix.height = (u32)min((u32)2048l, (u32)image_vsize);
+
+ /* Set capture format if we have explicitely specified one */
+ if (capture_v4l2_fmt) {
+ isi->format.pix.pixelformat = capture_v4l2_fmt;
+ } else {
+ /* Codec path output format */
+ isi->format.pix.pixelformat = V4L2_PIX_FMT_YVYU;
+ }
+
+ /* The ISI module codec path tries to output YUV 4:2:2
+ * Therefore two pixels will be in a 32bit word */
+ isi->format.pix.bytesperline = ALIGN(isi->format.pix.width * 2, 4);
+ isi->format.pix.sizeimage = isi->format.pix.bytesperline *
+ isi->format.pix.height;
+
+ pr_debug("set default format: width=%d height=%d\n",
+ isi->format.pix.width, isi->format.pix.height);
+
+ isi->streaming_format.pix.width = isi->format.pix.width;
+ isi->streaming_format.pix.height = isi->format.pix.height;
+ isi->streaming_format.pix.bytesperline = isi->format.pix.bytesperline;
+ isi->streaming_format.pix.sizeimage = isi->format.pix.sizeimage;
+
+ /* Set streaming format if we have explicitely specified one */
+ if (streaming_v4l2_fmt) {
+ isi->streaming_format.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
+ * Also the Greyscale format does not fit on top of the V4L2
+ * format but for now we just return it.
+ */
+ if (input_format == ATMEL_ISI_PIXFMT_GREY)
+ isi->streaming_format.pix.pixelformat =
+ V4L2_PIX_FMT_GREY;
+ else
+ isi->streaming_format.pix.pixelformat =
+ V4L2_PIX_FMT_RGB555X;
+ }
+
+ if (input_format) {
+ isi->format.input_format = input_format;
+ /* Not needed but for completeness*/
+ isi->streaming_format.input_format = input_format;
+ }
+
+}
+
+static int atmel_isi_init_hardware(struct atmel_isi *isi)
+{
+ u32 cfg2, cfg1, cr, ctrl;
+
+ cr = 0;
+ switch (isi->format.input_format) {
+ case ATMEL_ISI_PIXFMT_GREY:
+ cr = ISI_BIT(GRAYSCALE);
+ break;
+ case ATMEL_ISI_PIXFMT_YCrYCb:
+ cr = ISI_BF(V2_YCC_SWAP, 0);
+ break;
+ case ATMEL_ISI_PIXFMT_YCbYCr:
+ cr = ISI_BF(V2_YCC_SWAP, 1);
+ break;
+ case ATMEL_ISI_PIXFMT_CrYCbY:
+ cr = ISI_BF(V2_YCC_SWAP, 2);
+ break;
+ case ATMEL_ISI_PIXFMT_CbYCrY:
+ cr = ISI_BF(YCC_SWAP, 3);
+ break;
+ case ATMEL_ISI_PIXFMT_RGB24:
+ cr = ISI_BIT(V2_COL_SPACE) | ISI_BF(V2_RGB_CFG, 0);
+ break;
+ case ATMEL_ISI_PIXFMT_BGR24:
+ cr = ISI_BIT(V2_COL_SPACE) | ISI_BF(V2_RGB_CFG, 1);
+ break;
+ case ATMEL_ISI_PIXFMT_RGB16:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_MODE)
+ | ISI_BF(V2_RGB_CFG, 0));
+ break;
+ case ATMEL_ISI_PIXFMT_BGR16:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_MODE)
+ | ISI_BF(V2_RGB_CFG, 1));
+ break;
+ case ATMEL_ISI_PIXFMT_GRB16:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_MODE)
+ | ISI_BF(V2_RGB_CFG, 2));
+ break;
+ case ATMEL_ISI_PIXFMT_GBR16:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_MODE)
+ | ISI_BF(V2_RGB_CFG, 3));
+ break;
+ case ATMEL_ISI_PIXFMT_RGB24_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BF(V2_RGB_CFG, 0));
+ break;
+ case ATMEL_ISI_PIXFMT_BGR24_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BF(V2_RGB_CFG, 1));
+ break;
+ case ATMEL_ISI_PIXFMT_RGB16_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BIT(V2_RGB_MODE) | ISI_BF(V2_RGB_CFG, 0));
+ break;
+ case ATMEL_ISI_PIXFMT_BGR16_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BIT(V2_RGB_MODE) | ISI_BF(V2_RGB_CFG, 1));
+ break;
+ case ATMEL_ISI_PIXFMT_GRB16_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BIT(V2_RGB_MODE) | ISI_BF(V2_RGB_CFG, 2));
+ break;
+ case ATMEL_ISI_PIXFMT_GBR16_REV:
+ cr = (ISI_BIT(V2_COL_SPACE) | ISI_BIT(V2_RGB_SWAP)
+ | ISI_BIT(V2_RGB_MODE) | ISI_BF(V2_RGB_CFG, 3));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ cfg1 = ISI_BF(V2_EMB_SYNC, (has_emb_sync))
+ | ISI_BF(V2_HSYNC_POL, hsync_act_low)
+ | ISI_BF(V2_VSYNC_POL, vsync_act_low)
+ | ISI_BF(V2_PIXCLK_POL, pclk_act_falling)
+ | ISI_BF(V2_FULL, isi_full_mode);
+
+ ctrl = ISI_BIT(DIS);
+
+ isi_writel(isi, V2_CFG1, cfg1);
+ isi_writel(isi, V2_CTRL, ctrl);
+ /* Check if module properly disable */
+ while (isi_readl(isi, V2_STATUS) & ISI_BIT(V2_DIS_DONE))
+ cpu_relax();
+
+ cfg2 = isi_readl(isi, V2_CFG2);
+ cfg2 |= cr;
+ cfg2 = ISI_BFINS(V2_IM_VSIZE, isi->format.pix.height - 1, cfg2);
+ cfg2 = ISI_BFINS(V2_IM_HSIZE, isi->format.pix.width - 1, cfg2);
+
+ isi_writel(isi, V2_CFG2, cfg2);
+
+ return 0;
+}
+
+static int atmel_isi_start_capture(struct atmel_isi *isi)
+{
+ u32 cr, sr = 0;
+ int ret;
+
+ spin_lock_irq(&isi->lock);
+ isi->state = STATE_IDLE;
+
+ /* clear any pending SOF interrupt */
+ sr = isi_readl(isi, V2_STATUS);
+ /* <=> SOF in previous ISI */
+ isi_writel(isi, V2_INTEN, ISI_BIT(V2_VSYNC));
+ isi_writel(isi, V2_CTRL, isi_readl(isi, V2_CTRL) | ISI_BIT(V2_EN));
+
+ 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");
+
+ /* Enable */
+ isi_writel(isi, V2_DMA_CHER, ISI_BIT(V2_DMA_C_CH_EN));
+ isi_writel(isi, V2_DMA_C_ADDR, isi->capture_phys);
+
+ spin_lock_irq(&isi->lock);
+ isi->state = STATE_CAPTURE_WAIT_SOF;
+ /* Check if already in a frame */
+ while (isi_readl(isi, V2_STATUS) & ISI_BIT(V2_CDC))
+ cpu_relax();
+ cr = isi_readl(isi, V2_CTRL);
+ cr |= ISI_BIT(V2_CDC);
+ isi_writel(isi, V2_CTRL, cr);
+ isi_writel(isi, V2_INTEN, ISI_V2_CAPTURE_MASK);
+
+ spin_unlock_irq(&isi->lock);
+
+ return 0;
+}
+
+static void atmel_isi_capture_done(struct atmel_isi *isi,
+ int state)
+{
+ u32 cr;
+
+ cr = isi_readl(isi, V2_CTRL);
+ cr &= ~ISI_BIT(V2_CDC);
+ isi_writel(isi, V2_CTRL, cr);
+
+ isi->state = state;
+ wake_up_interruptible(&isi->capture_wq);
+ isi_writel(isi, V2_INTDIS, ISI_V2_CAPTURE_MASK);
+}
+
+static irqreturn_t atmel_isi_handle_streaming(struct atmel_isi *isi,
+ int sequence)
+{
+ return IRQ_HANDLED;
+}
+
+/* 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;
+
+ spin_lock(&isi->lock);
+
+ status = isi_readl(isi, V2_STATUS);
+ mask = isi_readl(isi, V2_INTMASK);
+ pending = status & mask;
+
+ if (isi->streaming) {
+ if (likely(pending & (ISI_BIT(V2_CXFR_DONE)))) {
+ sequence++;
+ ret = atmel_isi_handle_streaming(isi, sequence);
+ }
+ } else {
+ while (pending) {
+ if (pending &
+ (ISI_BIT(V2_C_OVR) | ISI_BIT(V2_FR_OVR))) {
+ atmel_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(V2_VSYNC) | ISI_BIT(V2_CDC))) {
+ 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;
+ }
+ }
+ if (pending &
+ (ISI_BIT(V2_CXFR_DONE) | ISI_BIT(V2_PXFR_DONE))) {
+ if (isi->state == STATE_CAPTURE_IN_PROGRESS)
+ atmel_isi_capture_done(isi,
+ STATE_CAPTURE_DONE);
+ }
+
+ if (pending & ISI_BIT(V2_SRST)) {
+ complete(&isi->reset_complete);
+ isi_writel(isi, V2_INTDIS, ISI_BIT(V2_SRST));
+ }
+
+ status = isi_readl(isi, V2_STATUS);
+ mask = isi_readl(isi, V2_INTMASK);
+ pending = status & mask;
+ ret = IRQ_HANDLED;
+ }
+ }
+ spin_unlock(&isi->lock);
+
+ return ret;
+}
+/* ------------------------------------------------------------------------
+ * IOCTL videoc handling
+ * ----------------------------------------------------------------------*/
+
+/* --------Capture ioctls ------------------------------------------------*/
+/* Device capabilities callback function.
+ */
+static int atmel_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 atmel_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, "atmel-isi stream", 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 atmel_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 atmel_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 atmel_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 atmel_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 atmel_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 atmel_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 atmel_isi_streaming_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 atmel_isi_streaming_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, "atmel-isi", 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 atmel_isi_streaming_s_input(struct file *file, void *priv,
+ unsigned int index)
+{
+ if (index != 0)
+ return -EINVAL;
+
+ return 0;
+}
+/* Gets current input device.
+ */
+static int atmel_isi_streaming_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 atmel_isi_streaming_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");
+
+ /* The pretended and normal format are already set earlier */
+ fmt->pixelformat = isi->streaming_format.pix.pixelformat;
+
+ return 0;
+}
+static int atmel_isi_streaming_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 atmel_isi_streaming_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 atmel_isi_streaming_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;
+
+ if (vfmt->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV) {
+ /* Just return the current format as we do not support
+ * format switching */
+ pr_debug("S_FMT: format not supported(only YUV)\n");
+ memcpy(&vfmt->fmt.pix, &isi->streaming_format.pix,
+ sizeof(struct v4l2_pix_format));
+ } else {
+ /* Set the sensor accordingly */
+ memcpy(&isi->format.pix, &vfmt->fmt.pix,
+ sizeof(struct v4l2_pix_format));
+ v4l2_subdev_call(isi->sd, video, s_fmt, vfmt);
+ }
+
+ return ret;
+}
+/* Checks if control is supported in driver
+ * No controls currently supported yet
+ */
+static int atmel_isi_streaming_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 atmel_isi_streaming_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 atmel_isi_streaming_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 atmel_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 atmel_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 atmel_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, *next_buffer;
+ u32 old_ctrl;
+
+ if (unlikely(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+ return -EINVAL;
+
+ if (unlikely(buf->index >= video_buffers || buf->index < 0)) {
+ pr_debug("Buffer index is not valid index=%d\n", buf->index);
+ return -EINVAL;
+ }
+
+ if (unlikely(buf->memory != V4L2_MEMORY_MMAP)) {
+ pr_debug("Buffer is not of MEMORY_MMAP type\n");
+ return -EINVAL;
+ }
+
+ buffer = &(isi->video_buffer[isi->tail]);
+ isi->tail++;
+ if (isi->tail == (video_buffers))
+ isi->tail = 0;
+ next_buffer = &(isi->video_buffer[isi->tail]);
+
+ /* disable fetch on next buff */
+ next_buffer->fb_desc.dma_ctrl &= ~ISI_BIT(V2_DMA_FETCH);
+ buffer->fb_desc.dma_ctrl |= ISI_BIT(V2_DMA_FETCH);
+
+ /* Restart the ISI transfert if suspended */
+ old_ctrl = isi_readl(isi, V2_DMA_C_CTRL);
+ isi_writel(isi, V2_DMA_C_CTRL, ISI_BIT(V2_DMA_FETCH) | old_ctrl);
+ isi_writel(isi, V2_DMA_CHER, ISI_BIT(V2_DMA_C_CH_EN));
+
+ mutex_lock(&isi->mutex);
+ buf->flags |= V4L2_BUF_FLAG_QUEUED;
+ buf->flags &= ~V4L2_BUF_FLAG_DONE;
+ buffer->status = FRAME_QUEUED;
+
+ mutex_unlock(&isi->mutex);
+
+ return 0;
+}
+
+static int atmel_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;
+ static int sequence;
+
+ if (unlikely(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+ return -EINVAL;
+
+ buffer = &(isi->video_buffer[isi->head]);
+ /* TEST if C_DONE == 1 ie isi transfer */
+ if ((buffer->fb_desc.dma_ctrl & ISI_BIT(V2_DMA_DONE)) == 0) {
+ pr_debug("In dqbuf: Buffer not ready\n");
+ return -EAGAIN;
+ } else {
+ buffer->status = FRAME_DONE;
+ }
+
+ buffer->fb_desc.dma_ctrl &= ~ISI_BIT(V2_DMA_DONE) ;
+
+ if (unlikely(buffer->status == FRAME_QUEUED)) {
+ if (isi->streaming == 0)
+ return 0;
+ pr_debug("isi: error, dequeued buffer not ready\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&isi->mutex);
+ buf->index = isi->head;
+ buf->bytesused = buffer->bytes_used;
+ do_gettimeofday(&buf->timestamp);
+ buf->timestamp.tv_sec -= start_time.tv_sec;
+ buf->timestamp.tv_usec -= start_time.tv_usec;
+ buf->sequence = sequence++;
+ buf->m.offset = (isi->head) << PAGE_SHIFT;
+ buffer->status = FRAME_UNUSED;
+ buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
+ buf->length = video_buffer_size;
+ buf->field = V4L2_FIELD_NONE;
+ buf->memory = V4L2_MEMORY_MMAP;
+ mutex_unlock(&isi->mutex);
+
+ isi->head++;
+ if ((isi->head) == (video_buffers))
+ isi->head = 0;
+
+ return 0;
+}
+static int atmel_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 i;
+ struct frame_buffer *buffer;
+ u32 cfg1, ctrl;
+
+ if (unlikely(type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+ return -EINVAL;
+
+ /* reset ISI transfert desc */
+ for (i = 0; i < (video_buffers - 1); i++)
+ isi->video_buffer[i].fb_desc.dma_ctrl =
+ ISI_BIT(V2_DMA_FETCH) | ISI_BIT(V2_DMA_WB);
+
+ /* ISI will stop at this point(last buffer of the queue) */
+ isi->video_buffer[i].fb_desc.dma_ctrl = ISI_BIT(V2_DMA_WB);
+
+ buffer = &(isi->video_buffer[isi->head]);
+
+ spin_lock_irq(&isi->lock);
+ isi->streaming = 1;
+
+ ctrl = isi_readl(isi, V2_CTRL);
+ cfg1 = isi_readl(isi, V2_CFG1);
+ /* Disable irq: cxfr for the codec path, pxfr for the preview path */
+ isi_writel(isi, V2_INTDIS,
+ ISI_BIT(V2_CXFR_DONE) | ISI_BIT(V2_PXFR_DONE));
+
+ /* Enable codec path */
+ ctrl |= ISI_BIT(V2_CDC);
+
+ /* Write the address of the first frame buffer in the C_ADDR reg
+ * write the address of the first descriptor(link list of buffer)
+ * in the C_DSCR reg, and enable dma channel.
+ */
+ isi_writel(isi, V2_DMA_C_DSCR, (__pa(&(buffer->fb_desc))));
+ isi_writel(isi, V2_DMA_C_CTRL,
+ ISI_BIT(V2_DMA_FETCH) | ISI_BIT(V2_DMA_DONE));
+ isi_writel(isi, V2_DMA_CHER, ISI_BIT(V2_DMA_C_CH_EN));
+
+ /* Enable linked list */
+ cfg1 |= ISI_BF(V2_FRATE, frame_rate_scaler) | ISI_BIT(V2_DISCR);
+
+ /* Enable ISI module*/
+ ctrl |= ISI_BIT(V2_ENABLE);
+ isi_writel(isi, V2_CTRL, ctrl);
+ isi_writel(isi, V2_CFG1, cfg1);
+
+ /* To properly set the timestamp we need to record the time at start
+ * up*/
+ do_gettimeofday(&start_time);
+
+ spin_unlock_irq(&isi->lock);
+
+ return 0;
+}
+
+static int atmel_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;
+ int reqnr;
+
+ if (unlikely(type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+ return -EINVAL;
+
+ spin_lock_irq(&isi->lock);
+ isi->streaming = 0;
+
+ /* Disble codec path */
+ isi_writel(isi, V2_CTRL, isi_readl(isi, V2_CTRL) & (~ISI_BIT(V2_CDC)));
+ /* Disable interrupts */
+ isi_writel(isi, V2_INTDIS,
+ ISI_BIT(V2_CXFR_DONE) | ISI_BIT(V2_PXFR_DONE));
+ /* Disable ISI module*/
+ isi_writel(isi, V2_CTRL, isi_readl(isi, V2_CTRL) | ISI_BIT(V2_DIS));
+
+ spin_unlock_irq(&isi->lock);
+
+ for (reqnr = 0; reqnr < video_buffers; reqnr++)
+ isi->video_buffer[reqnr].status = FRAME_UNUSED;
+
+ return 0;
+}
+static int atmel_isi_g_parm(struct file *file, void *f,
+ struct v4l2_streamparm *parm)
+{
+ int err = 0;
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ return err;
+}
+/*----------------------------------------------------------------------------*/
+
+static int atmel_isi_init(struct atmel_isi *isi)
+{
+ unsigned long timeout;
+
+ /*
+ * Reset the controller and wait for completion.
+ * The reset will only succeed if we have a
+ * pixel clock from the camera.
+ */
+ init_completion(&isi->reset_complete);
+
+ isi_writel(isi, V2_INTEN, ISI_BIT(V2_SRST));
+ isi_writel(isi, V2_CTRL, ISI_BIT(V2_SRST));
+
+ timeout = wait_for_completion_timeout(&isi->reset_complete,
+ msecs_to_jiffies(100));
+ if (timeout == 0)
+ return -ETIMEDOUT;
+
+ isi_writel(isi, V2_INTDIS, ~0UL);
+
+ atmel_isi_set_default_format(isi);
+
+ atmel_isi_init_hardware(isi);
+
+ return 0;
+}
+
+static int atmel_isi_capture_close(struct file *file)
+{
+ struct atmel_isi_fh *fh = file->private_data;
+ struct atmel_isi *isi = fh->isi;
+ u32 cr;
+
+ mutex_lock(&isi->mutex);
+
+ isi->capture_users--;
+ kfree(fh);
+
+ /* Stop camera and ISI if driver has no users */
+ if (!isi->stream_users) {
+
+ spin_lock_irq(&isi->lock);
+
+ cr = isi_readl(isi, V2_CTRL);
+ cr |= ISI_BIT(V2_DIS);
+ isi_writel(isi, V2_CTRL, cr);
+
+ spin_unlock_irq(&isi->lock);
+ }
+ mutex_unlock(&isi->mutex);
+
+ return 0;
+}
+
+static int atmel_isi_capture_open(struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct atmel_isi *isi = container_of(vdev, struct atmel_isi, cdev);
+ struct atmel_isi_fh *fh;
+ int ret = -EBUSY;
+
+ pr_debug("%s: opened\n", isi->cdev.name);
+
+ mutex_lock(&isi->mutex);
+
+ if (isi->capture_users) {
+ pr_debug("%s: open(): device busy\n", isi->cdev.name);
+ goto out;
+ }
+
+ /* If the streaming interface has no users too we do a
+ * init of the hardware and software configuration.
+ */
+ if (isi->stream_users == 0) {
+ ret = atmel_isi_init(isi);
+ if (ret)
+ goto out;
+ }
+
+ ret = -ENOMEM;
+ fh = kzalloc(sizeof(struct atmel_isi_fh), GFP_KERNEL);
+ if (!fh) {
+ pr_debug("%s: open(): out of memory\n", isi->cdev.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 atmel_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);
+
+ atmel_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 atmel_isi_capture_release(struct video_device *vdev)
+{
+ pr_debug("%s: release\n", vdev->name);
+}
+/* ----------------- Streaming interface -------------------------------------*/
+static void atmel_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 atmel_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(KERN_INFO "atmel_isi: mmap_count went negative\n");
+}
+
+static struct vm_operations_struct atmel_isi_vm_ops = {
+ .open = atmel_isi_vm_open,
+ .close = atmel_isi_vm_close,
+};
+
+static int atmel_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 = &atmel_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;
+ atmel_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 int atmel_isi_stream_close(struct file *file)
+{
+ struct atmel_isi_fh *fh = file->private_data;
+ struct atmel_isi *isi = fh->isi;
+ u32 cr;
+
+ mutex_lock(&isi->mutex);
+
+ isi->stream_users--;
+ kfree(fh);
+
+ /* Stop camera and ISI if driver has no users */
+ if (!isi->capture_users) {
+ spin_lock_irq(&isi->lock);
+ cr = isi_readl(isi, V2_CTRL);
+ cr |= ISI_BIT(V2_DIS);
+ isi_writel(isi, V2_CTRL, cr);
+ spin_unlock_irq(&isi->lock);
+ }
+
+ mutex_unlock(&isi->mutex);
+
+ return 0;
+}
+
+static int atmel_isi_stream_open(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;
+
+ mutex_lock(&isi->mutex);
+ /* Just one user is allowed for the streaming device*/
+ if (isi->stream_users) {
+ pr_debug("%s: open(): device busy\n", vdev->name);
+ goto out;
+ }
+
+ /* If the capture interface is unused too we do a
+ * init of hardware/software configuration
+ */
+ if (isi->capture_users == 0) {
+ ret = atmel_isi_init(isi);
+ if (ret)
+ 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->stream_users++;
+
+ ret = 0;
+
+out:
+ mutex_unlock(&isi->mutex);
+ return ret;
+}
+
+static void atmel_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 v4l2_file_operations atmel_isi_streaming_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = video_ioctl2,
+ .open = atmel_isi_stream_open,
+ .release = atmel_isi_stream_close,
+ .mmap = atmel_isi_mmap,
+};
+/* Capture v4l2 device file operations */
+static struct v4l2_file_operations atmel_isi_capture_fops = {
+ .owner = THIS_MODULE,
+ .open = atmel_isi_capture_open,
+ .release = atmel_isi_capture_close,
+ .read = atmel_isi_capture_read,
+ .ioctl = video_ioctl2,
+};
+
+static int __exit atmel_isi_remove(struct platform_device *pdev)
+{
+ struct atmel_isi *isi = platform_get_drvdata(pdev);
+ int i;
+
+ kfree(&isi->sd);
+ v4l2_device_unregister(&isi->v4l2_dev);
+ 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);
+ }
+
+ 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 const struct v4l2_ioctl_ops atmel_isi_capture_ioctl_ops = {
+ .vidioc_querycap = atmel_isi_capture_querycap,
+ .vidioc_enum_fmt_vid_cap = atmel_isi_capture_enum_fmt_cap,
+ .vidioc_g_fmt_vid_cap = atmel_isi_capture_g_fmt_cap,
+ .vidioc_try_fmt_vid_cap = atmel_isi_capture_try_fmt_cap,
+ .vidioc_s_fmt_vid_cap = atmel_isi_capture_s_fmt_cap,
+ .vidioc_reqbufs = atmel_isi_reqbufs,
+ .vidioc_querybuf = atmel_isi_querybuf,
+ .vidioc_qbuf = atmel_isi_qbuf,
+ .vidioc_dqbuf = atmel_isi_dqbuf,
+ .vidioc_enum_input = atmel_isi_capture_enum_input,
+ .vidioc_g_input = atmel_isi_capture_g_input,
+ .vidioc_s_input = atmel_isi_capture_s_input,
+};
+
+static struct video_device atmel_isi_capture_template = {
+ .fops = &atmel_isi_capture_fops,
+ .minor = -1,
+ .ioctl_ops = &atmel_isi_capture_ioctl_ops,
+ .current_norm = V4L2_STD_PAL,
+};
+static const struct v4l2_ioctl_ops atmel_isi_streaming_ioctl_ops = {
+ .vidioc_querycap = atmel_isi_streaming_querycap,
+ .vidioc_enum_fmt_vid_cap = atmel_isi_streaming_enum_fmt_cap,
+ .vidioc_g_fmt_vid_cap = atmel_isi_streaming_g_fmt_cap,
+ .vidioc_try_fmt_vid_cap = atmel_isi_streaming_try_fmt_cap,
+ .vidioc_s_fmt_vid_cap = atmel_isi_streaming_s_fmt_cap,
+ .vidioc_reqbufs = atmel_isi_reqbufs,
+ .vidioc_querybuf = atmel_isi_querybuf,
+ .vidioc_qbuf = atmel_isi_qbuf,
+ .vidioc_dqbuf = atmel_isi_dqbuf,
+ .vidioc_enum_input = atmel_isi_streaming_enum_input,
+ .vidioc_g_input = atmel_isi_streaming_g_input,
+ .vidioc_s_input = atmel_isi_streaming_s_input,
+ .vidioc_queryctrl = atmel_isi_streaming_queryctrl,
+ .vidioc_g_ctrl = atmel_isi_streaming_g_ctrl,
+ .vidioc_s_ctrl = atmel_isi_streaming_s_ctrl,
+ .vidioc_streamon = atmel_isi_streamon,
+ .vidioc_streamoff = atmel_isi_streamoff,
+ .vidioc_g_parm = atmel_isi_g_parm,
+};
+
+static struct video_device atmel_isi_streaming_template = {
+ .fops = &atmel_isi_streaming_fops,
+ .minor = -1,
+ .ioctl_ops = &atmel_isi_streaming_ioctl_ops,
+ .current_norm = V4L2_STD_PAL,
+};
+
+
+static int __init atmel_isi_probe(struct platform_device *pdev)
+{
+ unsigned int irq;
+ struct atmel_isi *isi;
+ struct clk *pclk;
+ struct resource *regs;
+ int ret;
+ int i;
+ int video_bytes_used = video_buffer_size;
+ struct device *dev = &pdev->dev;
+ struct isi_platform_data *pdata;
+ struct i2c_adapter *i2c_adap;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+
+ pclk = clk_get(&pdev->dev, "isi_clk");
+ if (IS_ERR(pclk))
+ return PTR_ERR(pclk);
+
+ clk_enable(pclk);
+
+ 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;
+ spin_lock_init(&isi->lock);
+ mutex_init(&isi->mutex);
+ init_waitqueue_head(&isi->capture_wq);
+
+ /* Initialize v4l2 capture device */
+ isi->cdev = atmel_isi_capture_template;
+ isi->cdev.release = atmel_isi_capture_release;
+ strcpy(isi->cdev.name, "atmel_isi_capture");
+#ifdef DEBUG
+ isi->cdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
+#endif
+
+ /* Initialize v4l2 streaming device */
+ isi->vdev = atmel_isi_streaming_template;
+ isi->vdev.release = atmel_isi_stream_release;
+ strcpy(isi->vdev.name, "atmel_isi_streaming");
+#ifdef DEBUG
+ isi->vdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
+#endif
+ isi->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ if (!isi->regs) {
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ if (dev->platform_data) {
+ pdata = (struct isi_platform_data *) dev->platform_data;
+ image_hsize = pdata->image_hsize;
+ image_vsize = pdata->image_vsize;
+
+ /* load i2c info */
+ isi->board_info = pdata->board_info;
+
+ if (pdata->prev_hsize)
+ prev_hsize = pdata->prev_hsize;
+ if (pdata->prev_vsize)
+ prev_vsize = pdata->prev_vsize;
+ if (pdata->pixfmt)
+ input_format = pdata->pixfmt;
+ else
+ input_format = ATMEL_ISI_PIXFMT_YCbYCr;
+ frame_rate_scaler = pdata->frate;
+ if (pdata->capture_v4l2_fmt)
+ capture_v4l2_fmt = pdata->capture_v4l2_fmt;
+ if (pdata->streaming_v4l2_fmt)
+ streaming_v4l2_fmt = pdata->streaming_v4l2_fmt;
+ if (pdata->cr1_flags & ISI_HSYNC_ACT_LOW)
+ hsync_act_low = 1;
+ if (pdata->cr1_flags & ISI_VSYNC_ACT_LOW)
+ vsync_act_low = 1;
+ if (pdata->cr1_flags & ISI_PXCLK_ACT_FALLING)
+ pclk_act_falling = 1;
+ if (pdata->cr1_flags & ISI_EMB_SYNC)
+ has_emb_sync = 1;
+ if (pdata->cr1_flags & ISI_CRC_SYNC)
+ emb_crc_sync = 1;
+ if (pdata->cr1_flags & ISI_FULL)
+ isi_full_mode = 1;
+ } else {
+ has_emb_sync = 0;
+ emb_crc_sync = 0;
+ hsync_act_low = 0;
+ vsync_act_low = 0;
+ pclk_act_falling = 0;
+ isi_full_mode = 0;
+ prev_hsize = 320;
+ prev_vsize = 240;
+ image_hsize = 320;
+ image_vsize = 240;
+ dev_info(&pdev->dev,
+ "No config available using default values\n");
+ }
+
+ video_buffer_size = prev_hsize * prev_vsize * 2;
+ video_bytes_used = video_buffer_size;
+
+ /* 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);
+
+ isi_writel(isi, V2_CTRL, ISI_BIT(V2_DIS));
+ /* Check if module disable */
+ while (isi_readl(isi, V2_STATUS) & ISI_BIT(V2_DIS))
+ cpu_relax();
+
+ 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;
+ }
+
+ 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 =
+ __pa(&isi->video_buffer[i+1].fb_desc);
+ }
+ isi->video_buffer[i].fb_desc.next_fbd_address =
+ __pa(&isi->video_buffer[0].fb_desc);
+
+ /* Set head & tail of the TD */
+ isi->head = 0;
+ isi->tail = video_buffers - 1;
+
+ for (i = 0 ; i < video_buffers; i++) {
+ dev_info(&pdev->dev,
+ "video buffer: %d bytes at %p (phys %08lx)\n",
+ video_buffer_size,
+ isi->video_buffer[i].frame_buffer,
+ (unsigned long) isi->video_buffer[i].fb_desc.fb_address);
+ }
+
+ dev_info(&pdev->dev,
+ "capture buffer: %d bytes at %p (phys 0x%08x)\n",
+ capture_buffer_size, isi->capture_buf,
+ isi->capture_phys);
+
+ ret = video_register_device(&isi->cdev, VFL_TYPE_GRABBER, video_nr);
+ if (ret) {
+ dev_err(&pdev->dev, "Registering capturing device failed\n");
+ video_device_release(&isi->cdev);
+ kfree(dev);
+ goto err_register1;
+ }
+
+ ret = video_register_device(&isi->vdev, VFL_TYPE_GRABBER, video_nr);
+ if (ret) {
+ dev_err(&pdev->dev, "Registering streaming device failed\n");
+ video_device_release(&isi->vdev);
+ kfree(dev);
+ goto err_register2;
+ }
+
+ ret = v4l2_device_register(dev, &isi->v4l2_dev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Unable to register v4l2 device.\n");
+ goto err_register_v4l2_device;
+ }
+
+ platform_set_drvdata(pdev, isi);
+
+ /* Set the subdev info */
+ i2c_adap = i2c_get_adapter(0);
+ isi->sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+ /* Load up the subdevice */
+ isi->sd =
+ v4l2_i2c_new_subdev_board(&isi->v4l2_dev,
+ i2c_adap,
+ "atmel_isi",
+ &isi->board_info,
+ NULL);
+ if (isi->sd) {
+ dev_err(&pdev->dev,
+ "v4l2 sub device registered\n");
+ } else {
+ dev_err(&pdev->dev,
+ "v4l2 sub device register fails\n");
+ goto probe_sd_out;
+ }
+
+ dev_info(&pdev->dev, "Atmel ISI V4L2 device at 0x%08lx\n",
+ (unsigned long)regs->start);
+
+ return 0;
+
+probe_sd_out:
+ kfree(isi->sd);
+err_register_v4l2_device:
+ v4l2_device_unregister(&isi->v4l2_dev);
+err_register2:
+ video_unregister_device(&isi->vdev);
+err_register1:
+ video_unregister_device(&isi->cdev);
+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);
+err_alloc_cbuf:
+ dma_free_coherent(&pdev->dev, capture_buffer_size,
+ isi->capture_buf,
+ isi->capture_phys);
+ free_irq(isi->irq, isi);
+err_req_irq:
+ iounmap(isi->regs);
+err_ioremap:
+ kfree(isi);
+err_alloc_isi:
+ clk_disable(pclk);
+
+ return ret;
+
+}
+
+static struct platform_driver atmel_isi_driver = {
+ .probe = atmel_isi_probe,
+ .remove = __exit_p(atmel_isi_remove),
+ .driver = {
+ .name = "atmel_isi",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init atmel_isi_init_module(void)
+{
+ return platform_driver_probe(&atmel_isi_driver, &atmel_isi_probe);
+}
+
+
+static void __exit atmel_isi_exit(void)
+{
+ platform_driver_unregister(&atmel_isi_driver);
+}
+
+
+module_init(atmel_isi_init_module);
+module_exit(atmel_isi_exit);
+
+MODULE_AUTHOR("Lars Häring <lharing@atmel.com>");
+MODULE_DESCRIPTION("The V4L2 driver for atmel Linux");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("video");
new file mode 100644
@@ -0,0 +1,460 @@
+/*
+ * 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>
+#include <linux/i2c.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.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
+
+/* ISI_V2 register offsets */
+#define ISI_V2_CFG1 0x0000
+#define ISI_V2_CFG2 0x0004
+#define ISI_V2_PSIZE 0x0008
+#define ISI_V2_PDECF 0x000c
+#define ISI_V2_Y2R_SET0 0x0010
+#define ISI_V2_Y2R_SET1 0x0014
+#define ISI_V2_R2Y_SET0 0x0018
+#define ISI_V2_R2Y_SET1 0x001C
+#define ISI_V2_R2Y_SET2 0x0020
+#define ISI_V2_CTRL 0x0024
+#define ISI_V2_STATUS 0x0028
+#define ISI_V2_INTEN 0x002C
+#define ISI_V2_INTDIS 0x0030
+#define ISI_V2_INTMASK 0x0034
+#define ISI_V2_DMA_CHER 0x0038
+#define ISI_V2_DMA_CHDR 0x003C
+#define ISI_V2_DMA_CHSR 0x0040
+#define ISI_V2_DMA_P_ADDR 0x0044
+#define ISI_V2_DMA_P_CTRL 0x0048
+#define ISI_V2_DMA_P_DSCR 0x004C
+#define ISI_V2_DMA_C_ADDR 0x0050
+#define ISI_V2_DMA_C_CTRL 0x0054
+#define ISI_V2_DMA_C_DSCR 0x0058
+
+/* 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 CFG1 */
+#define ISI_V2_HSYNC_POL_OFFSET 2
+#define ISI_V2_HSYNC_POL_SIZE 1
+#define ISI_V2_VSYNC_POL_OFFSET 3
+#define ISI_V2_VSYNC_POL_SIZE 1
+#define ISI_V2_PIXCLK_POL_OFFSET 4
+#define ISI_V2_PIXCLK_POL_SIZE 1
+#define ISI_V2_EMB_SYNC_OFFSET 6
+#define ISI_V2_EMB_SYNC_SIZE 1
+#define ISI_V2_CRC_SYNC_OFFSET 7
+#define ISI_V2_CRC_SYNC_SIZE 1
+#define ISI_V2_FRATE_OFFSET 8
+#define ISI_V2_FRATE_SIZE 3
+#define ISI_V2_DISCR_OFFSET 11
+#define ISI_V2_DISCR_SIZE 1
+#define ISI_V2_FULL_OFFSET 12
+#define ISI_V2_FULL_SIZE 1
+#define ISI_V2_THMASK_OFFSET 13
+#define ISI_V2_THMASK_SIZE 2
+#define ISI_V2_SLD_OFFSET 16
+#define ISI_V2_SLD_SIZE 8
+#define ISI_V2_SFD_OFFSET 24
+#define ISI_V2_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 CFG2 */
+#define ISI_V2_IM_VSIZE_OFFSET 0
+#define ISI_V2_IM_VSIZE_SIZE 11
+#define ISI_V2_GS_MODE_OFFSET 11
+#define ISI_V2_GS_MODE_SIZE 1
+#define ISI_V2_RGB_MODE_OFFSET 12
+#define ISI_V2_RGB_MODE_SIZE 1
+#define ISI_V2_GRAYSCALE_OFFSET 13
+#define ISI_V2_GRAYSCALE_SIZE 1
+#define ISI_V2_RGB_SWAP_OFFSET 14
+#define ISI_V2_RGB_SWAP_SIZE 1
+#define ISI_V2_COL_SPACE_OFFSET 15
+#define ISI_V2_COL_SPACE_SIZE 1
+#define ISI_V2_IM_HSIZE_OFFSET 16
+#define ISI_V2_IM_HSIZE_SIZE 11
+#define ISI_V2_YCC_SWAP_OFFSET 28
+#define ISI_V2_YCC_SWAP_SIZE 2
+#define ISI_V2_RGB_CFG_OFFSET 30
+#define ISI_V2_RGB_CFG_SIZE 2
+
+/* Bitfields in CTRL */
+#define ISI_V2_EN_OFFSET 0
+#define ISI_V2_EN_SIZE 1
+#define ISI_V2_DIS_OFFSET 1
+#define ISI_V2_DIS_SIZE 1
+#define ISI_V2_SRST_OFFSET 2
+#define ISI_V2_SRST_SIZE 1
+#define ISI_V2_CDC_OFFSET 8
+#define ISI_V2_CDC_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_CDC_STATUS_OFFSET 3
+#define ISI_CDC_STATUS_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 SR/IER/IDR/IMR(ISI_V2) */
+#define ISI_V2_ENABLE_OFFSET 0
+#define ISI_V2_ENABLE_SIZE 1
+#define ISI_V2_DIS_DONE_OFFSET 1
+#define ISI_V2_DIS_DONE_SIZE 1
+#define ISI_V2_SRST_OFFSET 2
+#define ISI_V2_SRST_SIZE 1
+#define ISI_V2_CDC_STATUS_OFFSET 8
+#define ISI_V2_CDC_STATUS_SIZE 1
+#define ISI_V2_VSYNC_OFFSET 10
+#define ISI_V2_VSYNC_SIZE 1
+#define ISI_V2_PXFR_DONE_OFFSET 16
+#define ISI_V2_PXFR_DONE_SIZE 1
+#define ISI_V2_CXFR_DONE_OFFSET 17
+#define ISI_V2_CXFR_DONE_SIZE 1
+#define ISI_V2_P_OVR_OFFSET 24
+#define ISI_V2_P_OVR_SIZE 1
+#define ISI_V2_C_OVR_OFFSET 25
+#define ISI_V2_C_OVR_SIZE 1
+#define ISI_V2_CRC_ERR_OFFSET 26
+#define ISI_V2_CRC_ERR_SIZE 1
+#define ISI_V2_FR_OVR_OFFSET 27
+#define ISI_V2_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 PSIZE(ISI_V2) */
+#define ISI_V2_PREV_VSIZE_OFFSET 0
+#define ISI_V2_PREV_VSIZE_SIZE 10
+#define ISI_V2_PREV_HSIZE_OFFSET 16
+#define ISI_V2_PREV_HSIZE_SIZE 10
+
+/* Bitfields in PCDEF */
+#define ISI_DEC_FACTOR_OFFSET 0
+#define ISI_DEC_FACTOR_SIZE 8
+
+/* Bitfields in PCDEF */
+#define ISI_V2_DEC_FACTOR_OFFSET 0
+#define ISI_V2_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 DMA_C_ADDR */
+#define ISI_V2_DMA_ADDR_OFFSET 0
+#define ISI_V2_DMA_ADDR_SIZE 32
+
+/* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
+#define ISI_V2_DMA_FETCH_OFFSET 0
+#define ISI_V2_DMA_FETCH_SIZE 1
+#define ISI_V2_DMA_WB_OFFSET 1
+#define ISI_V2_DMA_WB_SIZE 1
+#define ISI_V2_DMA_IEN_OFFSET 2
+#define ISI_V2_DMA_IEN_SIZE 1
+#define ISI_V2_DMA_DONE_OFFSET 3
+#define ISI_V2_DMA_DONE_SIZE 1
+
+/* Bitfields in DMA_CHER */
+#define ISI_V2_DMA_P_CH_EN_OFFSET 0
+#define ISI_V2_DMA_P_CH_EN_SIZE 1
+#define ISI_V2_DMA_C_CH_EN_OFFSET 1
+#define ISI_V2_DMA_C_CH_EN_SIZE 1
+
+/* Bitfields in Y2R_SET0 */
+#define ISI_Y2R_SET0_C3_OFFSET 24
+#define ISI_Y2R_SET0_C3_SIZE 8
+
+/* Bitfields in Y2R_SET0(ISI_V2) */
+#define ISI_V2_Y2R_SET0_C3_OFFSET 24
+#define ISI_V2_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 Y2R_SET1(ISI_V2) */
+#define ISI_V2_Y2R_SET1_C4_OFFSET 0
+#define ISI_V2_Y2R_SET1_C4_SIZE 9
+#define ISI_V2_YOFF_OFFSET 12
+#define ISI_V2_YOFF_SIZE 1
+#define ISI_V2_CROFF_OFFSET 13
+#define ISI_V2_CROFF_SIZE 1
+#define ISI_V2_CBOFF_OFFSET 14
+#define ISI_V2_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_SET0(ISI_V2) */
+#define ISI_V2_C0_OFFSET 0
+#define ISI_V2_C0_SIZE 8
+#define ISI_V2_C1_OFFSET 8
+#define ISI_V2_C1_SIZE 8
+#define ISI_V2_C2_OFFSET 16
+#define ISI_V2_C2_SIZE 8
+#define ISI_V2_ROFF_OFFSET 24
+#define ISI_V2_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_SET1(ISI_V2) */
+#define ISI_V2_R2Y_SET1_C3_OFFSET 0
+#define ISI_V2_R2Y_SET1_C3_SIZE 8
+#define ISI_V2_R2Y_SET1_C4_OFFSET 8
+#define ISI_V2_R2Y_SET1_C4_SIZE 8
+#define ISI_V2_C5_OFFSET 16
+#define ISI_V2_C5_SIZE 8
+#define ISI_V2_GOFF_OFFSET 24
+#define ISI_V2_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
+
+/* Bitfields in R2Y_SET2(ISI_V2) */
+#define ISI_V2_C6_OFFSET 0
+#define ISI_V2_C6_SIZE 8
+#define ISI_V2_C7_OFFSET 8
+#define ISI_V2_C7_SIZE 8
+#define ISI_V2_C8_OFFSET 16
+#define ISI_V2_C8_SIZE 8
+#define ISI_V2_BOFF_OFFSET 24
+#define ISI_V2_BOFF_SIZE 1
+
+/* Constants for FRATE */
+#define ISI_FRATE_CAPTURE_ALL 0
+
+/* Constants for FRATE(ISI_V2) */
+#define ISI_V2_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 YCC_SWAP(ISI_V2) */
+#define ISI_V2_YCC_SWAP_DEFAULT 0
+#define ISI_V2_YCC_SWAP_MODE_1 1
+#define ISI_V2_YCC_SWAP_MODE_2 2
+#define ISI_V2_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
+
+/* Constants for RGB_CFG(ISI_V2) */
+#define ISI_V2_RGB_CFG_DEFAULT 0
+#define ISI_V2_RGB_CFG_MODE_1 1
+#define ISI_V2_RGB_CFG_MODE_2 2
+#define ISI_V2_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 isi_platform_data {
+ u16 image_hsize;
+ u16 image_vsize;
+ u16 prev_hsize;
+ u16 prev_vsize;
+ u16 cr1_flags;
+#define ISI_HSYNC_ACT_LOW 0x01
+#define ISI_VSYNC_ACT_LOW 0x02
+#define ISI_PXCLK_ACT_FALLING 0x04
+#define ISI_EMB_SYNC 0x08
+#define ISI_CRC_SYNC 0x10
+#define ISI_FULL 0x20
+ u8 gs_mode;
+#define ISI_GS_2PIX_PER_WORD 0x00
+#define ISI_GS_1PIX_PER_WORD 0x01
+ u8 pixfmt;
+ u8 sfd;
+ u8 sld;
+ u8 thmask;
+#define ISI_BURST_4_8_16 0x00
+#define ISI_BURST_8_16 0x01
+#define ISI_BURST_16 0x02
+ u8 frate;
+#define ISI_FRATE_DIV_2 0x01
+#define ISI_FRATE_DIV_3 0x02
+#define ISI_FRATE_DIV_4 0x03
+#define ISI_FRATE_DIV_5 0x04
+#define ISI_FRATE_DIV_6 0x05
+#define ISI_FRATE_DIV_7 0x06
+#define ISI_FRATE_DIV_8 0x07
+ int capture_v4l2_fmt;
+ int streaming_v4l2_fmt;
+ /* i2c needed for subdev struct */
+ struct i2c_board_info board_info;
+};
+
+#endif /* __ASM_AVR32_ISI_H__ */
+