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ceaf9e8217
kumquat-buildroot/target/device/Atmel/misc-patches/linux-2.6.24-500-v4l-avr32-isi.patch
John Voltz ceaf9e8217 updates and additions for avr32 arch
2008-03-06 18:59:14 +00:00

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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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