--- /dev/null
+/*
+ * Copyright (C) 2008-2009 Texas Instruments Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Driver name : VPFE Capture driver
+ * VPFE Capture driver allows applications to capture and stream video
+ * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
+ * TVP5146 or Raw Bayer RGB image data from an image sensor
+ * such as Microns' MT9T001, MT9T031 etc.
+ *
+ * These SoCs have, in common, a Video Processing Subsystem (VPSS) that
+ * consists of a Video Processing Front End (VPFE) for capturing
+ * video/raw image data and Video Processing Back End (VPBE) for displaying
+ * YUV data through an in-built analog encoder or Digital LCD port. This
+ * driver is for capture through VPFE. A typical EVM using these SoCs have
+ * following high level configuration.
+ *
+ *
+ * decoder(TVP5146/ YUV/
+ * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
+ * data input | |
+ * V |
+ * SDRAM |
+ * V
+ * Image Processor
+ * |
+ * V
+ * SDRAM
+ * The data flow happens from a decoder connected to the VPFE over a
+ * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
+ * and to the input of VPFE through an optional MUX (if more inputs are
+ * to be interfaced on the EVM). The input data is first passed through
+ * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
+ * does very little or no processing on YUV data and does pre-process Raw
+ * Bayer RGB data through modules such as Defect Pixel Correction (DFC)
+ * Color Space Conversion (CSC), data gain/offset etc. After this, data
+ * can be written to SDRAM or can be connected to the image processing
+ * block such as IPIPE (on DM355 only).
+ *
+ * Features supported
+ * - MMAP IO
+ * - Capture using TVP5146 over BT.656
+ * - support for interfacing decoders using sub device model
+ * - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
+ * data capture to SDRAM.
+ * TODO list
+ * - Support multiple REQBUF after open
+ * - Support for de-allocating buffers through REQBUF
+ * - Support for Raw Bayer RGB capture
+ * - Support for chaining Image Processor
+ * - Support for static allocation of buffers
+ * - Support for USERPTR IO
+ * - Support for STREAMON before QBUF
+ * - Support for control ioctls
+ */
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <media/v4l2-common.h>
+#include <linux/io.h>
+#include <media/davinci/vpfe_capture.h>
+#include "ccdc_hw_device.h"
+
+static int debug;
+static u32 numbuffers = 3;
+static u32 bufsize = (720 * 576 * 2);
+
+module_param(numbuffers, uint, S_IRUGO);
+module_param(bufsize, uint, S_IRUGO);
+module_param(debug, int, 0644);
+
+MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
+MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+
+MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");
+
+/* standard information */
+struct vpfe_standard {
+ v4l2_std_id std_id;
+ unsigned int width;
+ unsigned int height;
+ struct v4l2_fract pixelaspect;
+ /* 0 - progressive, 1 - interlaced */
+ int frame_format;
+};
+
+/* ccdc configuration */
+struct ccdc_config {
+ /* This make sure vpfe is probed and ready to go */
+ int vpfe_probed;
+ /* name of ccdc device */
+ char name[32];
+};
+
+/* data structures */
+static struct vpfe_config_params config_params = {
+ .min_numbuffers = 3,
+ .numbuffers = 3,
+ .min_bufsize = 720 * 480 * 2,
+ .device_bufsize = 720 * 576 * 2,
+};
+
+/* ccdc device registered */
+static struct ccdc_hw_device *ccdc_dev;
+/* lock for accessing ccdc information */
+static DEFINE_MUTEX(ccdc_lock);
+/* ccdc configuration */
+static struct ccdc_config *ccdc_cfg;
+
+static const struct vpfe_standard vpfe_standards[] = {
+ {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
+ {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
+};
+
+/* Used when raw Bayer image from ccdc is directly captured to SDRAM */
+static const struct vpfe_pixel_format vpfe_pix_fmts[] = {
+ {
+ .fmtdesc = {
+ .index = 0,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "Bayer GrRBGb 8bit A-Law compr.",
+ .pixelformat = V4L2_PIX_FMT_SBGGR8,
+ },
+ .bpp = 1,
+ },
+ {
+ .fmtdesc = {
+ .index = 1,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "Bayer GrRBGb - 16bit",
+ .pixelformat = V4L2_PIX_FMT_SBGGR16,
+ },
+ .bpp = 2,
+ },
+ {
+ .fmtdesc = {
+ .index = 2,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "Bayer GrRBGb 8bit DPCM compr.",
+ .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
+ },
+ .bpp = 1,
+ },
+ {
+ .fmtdesc = {
+ .index = 3,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "YCbCr 4:2:2 Interleaved UYVY",
+ .pixelformat = V4L2_PIX_FMT_UYVY,
+ },
+ .bpp = 2,
+ },
+ {
+ .fmtdesc = {
+ .index = 4,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "YCbCr 4:2:2 Interleaved YUYV",
+ .pixelformat = V4L2_PIX_FMT_YUYV,
+ },
+ .bpp = 2,
+ },
+ {
+ .fmtdesc = {
+ .index = 5,
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .description = "Y/CbCr 4:2:0 - Semi planar",
+ .pixelformat = V4L2_PIX_FMT_NV12,
+ },
+ .bpp = 1,
+ },
+};
+
+/*
+ * vpfe_lookup_pix_format()
+ * lookup an entry in the vpfe pix format table based on pix_format
+ */
+static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) {
+ if (pix_format == vpfe_pix_fmts[i].fmtdesc.pixelformat)
+ return &vpfe_pix_fmts[i];
+ }
+ return NULL;
+}
+
+/*
+ * vpfe_register_ccdc_device. CCDC module calls this to
+ * register with vpfe capture
+ */
+int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
+{
+ int ret = 0;
+ printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
+
+ BUG_ON(!dev->hw_ops.open);
+ BUG_ON(!dev->hw_ops.enable);
+ BUG_ON(!dev->hw_ops.set_hw_if_params);
+ BUG_ON(!dev->hw_ops.configure);
+ BUG_ON(!dev->hw_ops.set_buftype);
+ BUG_ON(!dev->hw_ops.get_buftype);
+ BUG_ON(!dev->hw_ops.enum_pix);
+ BUG_ON(!dev->hw_ops.set_frame_format);
+ BUG_ON(!dev->hw_ops.get_frame_format);
+ BUG_ON(!dev->hw_ops.get_pixel_format);
+ BUG_ON(!dev->hw_ops.set_pixel_format);
+ BUG_ON(!dev->hw_ops.set_image_window);
+ BUG_ON(!dev->hw_ops.get_image_window);
+ BUG_ON(!dev->hw_ops.get_line_length);
+ BUG_ON(!dev->hw_ops.getfid);
+
+ mutex_lock(&ccdc_lock);
+ if (NULL == ccdc_cfg) {
+ /*
+ * TODO. Will this ever happen? if so, we need to fix it.
+ * Proabably we need to add the request to a linked list and
+ * walk through it during vpfe probe
+ */
+ printk(KERN_ERR "vpfe capture not initialized\n");
+ ret = -EFAULT;
+ goto unlock;
+ }
+
+ if (strcmp(dev->name, ccdc_cfg->name)) {
+ /* ignore this ccdc */
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ if (ccdc_dev) {
+ printk(KERN_ERR "ccdc already registered\n");
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ ccdc_dev = dev;
+unlock:
+ mutex_unlock(&ccdc_lock);
+ return ret;
+}
+EXPORT_SYMBOL(vpfe_register_ccdc_device);
+
+/*
+ * vpfe_unregister_ccdc_device. CCDC module calls this to
+ * unregister with vpfe capture
+ */
+void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev)
+{
+ if (NULL == dev) {
+ printk(KERN_ERR "invalid ccdc device ptr\n");
+ return;
+ }
+
+ printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n",
+ dev->name);
+
+ if (strcmp(dev->name, ccdc_cfg->name)) {
+ /* ignore this ccdc */
+ return;
+ }
+
+ mutex_lock(&ccdc_lock);
+ ccdc_dev = NULL;
+ mutex_unlock(&ccdc_lock);
+ return;
+}
+EXPORT_SYMBOL(vpfe_unregister_ccdc_device);
+
+/*
+ * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
+ */
+static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe_dev,
+ struct v4l2_format *f)
+{
+ struct v4l2_rect image_win;
+ enum ccdc_buftype buf_type;
+ enum ccdc_frmfmt frm_fmt;
+
+ memset(f, 0, sizeof(*f));
+ f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ ccdc_dev->hw_ops.get_image_window(&image_win);
+ f->fmt.pix.width = image_win.width;
+ f->fmt.pix.height = image_win.height;
+ f->fmt.pix.bytesperline = ccdc_dev->hw_ops.get_line_length();
+ f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
+ f->fmt.pix.height;
+ buf_type = ccdc_dev->hw_ops.get_buftype();
+ f->fmt.pix.pixelformat = ccdc_dev->hw_ops.get_pixel_format();
+ frm_fmt = ccdc_dev->hw_ops.get_frame_format();
+ if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
+ if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED)
+ f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
+ else {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf_type\n");
+ return -EINVAL;
+ }
+ } else {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid frm_fmt\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * vpfe_config_ccdc_image_format()
+ * For a pix format, configure ccdc to setup the capture
+ */
+static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev)
+{
+ enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
+ int ret = 0;
+
+ if (ccdc_dev->hw_ops.set_pixel_format(
+ vpfe_dev->fmt.fmt.pix.pixelformat) < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "couldn't set pix format in ccdc\n");
+ return -EINVAL;
+ }
+ /* configure the image window */
+ ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop);
+
+ switch (vpfe_dev->fmt.fmt.pix.field) {
+ case V4L2_FIELD_INTERLACED:
+ /* do nothing, since it is default */
+ ret = ccdc_dev->hw_ops.set_buftype(
+ CCDC_BUFTYPE_FLD_INTERLEAVED);
+ break;
+ case V4L2_FIELD_NONE:
+ frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
+ /* buffer type only applicable for interlaced scan */
+ break;
+ case V4L2_FIELD_SEQ_TB:
+ ret = ccdc_dev->hw_ops.set_buftype(
+ CCDC_BUFTYPE_FLD_SEPARATED);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set the frame format */
+ if (!ret)
+ ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt);
+ return ret;
+}
+/*
+ * vpfe_config_image_format()
+ * For a given standard, this functions sets up the default
+ * pix format & crop values in the vpfe device and ccdc. It first
+ * starts with defaults based values from the standard table.
+ * It then checks if sub device support g_mbus_fmt and then override the
+ * values based on that.Sets crop values to match with scan resolution
+ * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
+ * values in ccdc
+ */
+static int vpfe_config_image_format(struct vpfe_device *vpfe_dev,
+ v4l2_std_id std_id)
+{
+ struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
+ struct v4l2_mbus_framefmt mbus_fmt;
+ struct v4l2_pix_format *pix = &vpfe_dev->fmt.fmt.pix;
+ int i, ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
+ if (vpfe_standards[i].std_id & std_id) {
+ vpfe_dev->std_info.active_pixels =
+ vpfe_standards[i].width;
+ vpfe_dev->std_info.active_lines =
+ vpfe_standards[i].height;
+ vpfe_dev->std_info.frame_format =
+ vpfe_standards[i].frame_format;
+ vpfe_dev->std_index = i;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(vpfe_standards)) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
+ return -EINVAL;
+ }
+
+ vpfe_dev->crop.top = 0;
+ vpfe_dev->crop.left = 0;
+ vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
+ vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
+ pix->width = vpfe_dev->crop.width;
+ pix->height = vpfe_dev->crop.height;
+
+ /* first field and frame format based on standard frame format */
+ if (vpfe_dev->std_info.frame_format) {
+ pix->field = V4L2_FIELD_INTERLACED;
+ /* assume V4L2_PIX_FMT_UYVY as default */
+ pix->pixelformat = V4L2_PIX_FMT_UYVY;
+ v4l2_fill_mbus_format(&mbus_fmt, pix,
+ MEDIA_BUS_FMT_YUYV10_2X10);
+ } else {
+ pix->field = V4L2_FIELD_NONE;
+ /* assume V4L2_PIX_FMT_SBGGR8 */
+ pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
+ v4l2_fill_mbus_format(&mbus_fmt, pix,
+ MEDIA_BUS_FMT_SBGGR8_1X8);
+ }
+
+ /* if sub device supports g_mbus_fmt, override the defaults */
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
+ sdinfo->grp_id, video, g_mbus_fmt, &mbus_fmt);
+
+ if (ret && ret != -ENOIOCTLCMD) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "error in getting g_mbus_fmt from sub device\n");
+ return ret;
+ }
+ v4l2_fill_pix_format(pix, &mbus_fmt);
+ pix->bytesperline = pix->width * 2;
+ pix->sizeimage = pix->bytesperline * pix->height;
+
+ /* Sets the values in CCDC */
+ ret = vpfe_config_ccdc_image_format(vpfe_dev);
+ if (ret)
+ return ret;
+
+ /* Update the values of sizeimage and bytesperline */
+ pix->bytesperline = ccdc_dev->hw_ops.get_line_length();
+ pix->sizeimage = pix->bytesperline * pix->height;
+
+ return 0;
+}
+
+static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
+{
+ int ret = 0;
+
+ /* set first input of current subdevice as the current input */
+ vpfe_dev->current_input = 0;
+
+ /* set default standard */
+ vpfe_dev->std_index = 0;
+
+ /* Configure the default format information */
+ ret = vpfe_config_image_format(vpfe_dev,
+ vpfe_standards[vpfe_dev->std_index].std_id);
+ if (ret)
+ return ret;
+
+ /* now open the ccdc device to initialize it */
+ mutex_lock(&ccdc_lock);
+ if (NULL == ccdc_dev) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
+ ret = -ENODEV;
+ goto unlock;
+ }
+
+ if (!try_module_get(ccdc_dev->owner)) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
+ ret = -ENODEV;
+ goto unlock;
+ }
+ ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
+ if (!ret)
+ vpfe_dev->initialized = 1;
+
+ /* Clear all VPFE/CCDC interrupts */
+ if (vpfe_dev->cfg->clr_intr)
+ vpfe_dev->cfg->clr_intr(-1);
+
+unlock:
+ mutex_unlock(&ccdc_lock);
+ return ret;
+}
+
+/*
+ * vpfe_open : It creates object of file handle structure and
+ * stores it in private_data member of filepointer
+ */
+static int vpfe_open(struct file *file)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct video_device *vdev = video_devdata(file);
+ struct vpfe_fh *fh;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
+
+ if (!vpfe_dev->cfg->num_subdevs) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
+ return -ENODEV;
+ }
+
+ /* Allocate memory for the file handle object */
+ fh = kmalloc(sizeof(struct vpfe_fh), GFP_KERNEL);
+ if (NULL == fh) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "unable to allocate memory for file handle object\n");
+ return -ENOMEM;
+ }
+ /* store pointer to fh in private_data member of file */
+ file->private_data = fh;
+ fh->vpfe_dev = vpfe_dev;
+ v4l2_fh_init(&fh->fh, vdev);
+ mutex_lock(&vpfe_dev->lock);
+ /* If decoder is not initialized. initialize it */
+ if (!vpfe_dev->initialized) {
+ if (vpfe_initialize_device(vpfe_dev)) {
+ mutex_unlock(&vpfe_dev->lock);
+ return -ENODEV;
+ }
+ }
+ /* Increment device usrs counter */
+ vpfe_dev->usrs++;
+ /* Set io_allowed member to false */
+ fh->io_allowed = 0;
+ v4l2_fh_add(&fh->fh);
+ mutex_unlock(&vpfe_dev->lock);
+ return 0;
+}
+
+static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
+{
+ unsigned long addr;
+
+ vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
+ struct videobuf_buffer, queue);
+ list_del(&vpfe_dev->next_frm->queue);
+ vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
+ addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
+
+ ccdc_dev->hw_ops.setfbaddr(addr);
+}
+
+static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
+{
+ unsigned long addr;
+
+ addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
+ addr += vpfe_dev->field_off;
+ ccdc_dev->hw_ops.setfbaddr(addr);
+}
+
+static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
+{
+ v4l2_get_timestamp(&vpfe_dev->cur_frm->ts);
+ vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
+ vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
+ wake_up_interruptible(&vpfe_dev->cur_frm->done);
+ vpfe_dev->cur_frm = vpfe_dev->next_frm;
+}
+
+/* ISR for VINT0*/
+static irqreturn_t vpfe_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe_dev = dev_id;
+ enum v4l2_field field;
+ int fid;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
+ field = vpfe_dev->fmt.fmt.pix.field;
+
+ /* if streaming not started, don't do anything */
+ if (!vpfe_dev->started)
+ goto clear_intr;
+
+ /* only for 6446 this will be applicable */
+ if (NULL != ccdc_dev->hw_ops.reset)
+ ccdc_dev->hw_ops.reset();
+
+ if (field == V4L2_FIELD_NONE) {
+ /* handle progressive frame capture */
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "frame format is progressive...\n");
+ if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
+ vpfe_process_buffer_complete(vpfe_dev);
+ goto clear_intr;
+ }
+
+ /* interlaced or TB capture check which field we are in hardware */
+ fid = ccdc_dev->hw_ops.getfid();
+
+ /* switch the software maintained field id */
+ vpfe_dev->field_id ^= 1;
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
+ fid, vpfe_dev->field_id);
+ if (fid == vpfe_dev->field_id) {
+ /* we are in-sync here,continue */
+ if (fid == 0) {
+ /*
+ * One frame is just being captured. If the next frame
+ * is available, release the current frame and move on
+ */
+ if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
+ vpfe_process_buffer_complete(vpfe_dev);
+ /*
+ * based on whether the two fields are stored
+ * interleavely or separately in memory, reconfigure
+ * the CCDC memory address
+ */
+ if (field == V4L2_FIELD_SEQ_TB) {
+ vpfe_schedule_bottom_field(vpfe_dev);
+ }
+ goto clear_intr;
+ }
+ /*
+ * if one field is just being captured configure
+ * the next frame get the next frame from the empty
+ * queue if no frame is available hold on to the
+ * current buffer
+ */
+ spin_lock(&vpfe_dev->dma_queue_lock);
+ if (!list_empty(&vpfe_dev->dma_queue) &&
+ vpfe_dev->cur_frm == vpfe_dev->next_frm)
+ vpfe_schedule_next_buffer(vpfe_dev);
+ spin_unlock(&vpfe_dev->dma_queue_lock);
+ } else if (fid == 0) {
+ /*
+ * out of sync. Recover from any hardware out-of-sync.
+ * May loose one frame
+ */
+ vpfe_dev->field_id = fid;
+ }
+clear_intr:
+ if (vpfe_dev->cfg->clr_intr)
+ vpfe_dev->cfg->clr_intr(irq);
+
+ return IRQ_HANDLED;
+}
+
+/* vdint1_isr - isr handler for VINT1 interrupt */
+static irqreturn_t vdint1_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe_dev = dev_id;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
+
+ /* if streaming not started, don't do anything */
+ if (!vpfe_dev->started) {
+ if (vpfe_dev->cfg->clr_intr)
+ vpfe_dev->cfg->clr_intr(irq);
+ return IRQ_HANDLED;
+ }
+
+ spin_lock(&vpfe_dev->dma_queue_lock);
+ if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
+ !list_empty(&vpfe_dev->dma_queue) &&
+ vpfe_dev->cur_frm == vpfe_dev->next_frm)
+ vpfe_schedule_next_buffer(vpfe_dev);
+ spin_unlock(&vpfe_dev->dma_queue_lock);
+
+ if (vpfe_dev->cfg->clr_intr)
+ vpfe_dev->cfg->clr_intr(irq);
+
+ return IRQ_HANDLED;
+}
+
+static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
+{
+ enum ccdc_frmfmt frame_format;
+
+ frame_format = ccdc_dev->hw_ops.get_frame_format();
+ if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
+ free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
+}
+
+static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
+{
+ enum ccdc_frmfmt frame_format;
+
+ frame_format = ccdc_dev->hw_ops.get_frame_format();
+ if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
+ return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
+ 0, "vpfe_capture1",
+ vpfe_dev);
+ }
+ return 0;
+}
+
+/* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
+static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
+{
+ vpfe_dev->started = 0;
+ ccdc_dev->hw_ops.enable(0);
+ if (ccdc_dev->hw_ops.enable_out_to_sdram)
+ ccdc_dev->hw_ops.enable_out_to_sdram(0);
+}
+
+/*
+ * vpfe_release : This function deletes buffer queue, frees the
+ * buffers and the vpfe file handle
+ */
+static int vpfe_release(struct file *file)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ int ret;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
+
+ /* Get the device lock */
+ mutex_lock(&vpfe_dev->lock);
+ /* if this instance is doing IO */
+ if (fh->io_allowed) {
+ if (vpfe_dev->started) {
+ sdinfo = vpfe_dev->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
+ sdinfo->grp_id,
+ video, s_stream, 0);
+ if (ret && (ret != -ENOIOCTLCMD))
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "stream off failed in subdev\n");
+ vpfe_stop_ccdc_capture(vpfe_dev);
+ vpfe_detach_irq(vpfe_dev);
+ videobuf_streamoff(&vpfe_dev->buffer_queue);
+ }
+ vpfe_dev->io_usrs = 0;
+ vpfe_dev->numbuffers = config_params.numbuffers;
+ videobuf_stop(&vpfe_dev->buffer_queue);
+ videobuf_mmap_free(&vpfe_dev->buffer_queue);
+ }
+
+ /* Decrement device usrs counter */
+ vpfe_dev->usrs--;
+ v4l2_fh_del(&fh->fh);
+ v4l2_fh_exit(&fh->fh);
+ /* If this is the last file handle */
+ if (!vpfe_dev->usrs) {
+ vpfe_dev->initialized = 0;
+ if (ccdc_dev->hw_ops.close)
+ ccdc_dev->hw_ops.close(vpfe_dev->pdev);
+ module_put(ccdc_dev->owner);
+ }
+ mutex_unlock(&vpfe_dev->lock);
+ file->private_data = NULL;
+ /* Free memory allocated to file handle object */
+ kfree(fh);
+ return 0;
+}
+
+/*
+ * vpfe_mmap : It is used to map kernel space buffers
+ * into user spaces
+ */
+static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ /* Get the device object and file handle object */
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
+
+ return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
+}
+
+/*
+ * vpfe_poll: It is used for select/poll system call
+ */
+static unsigned int vpfe_poll(struct file *file, poll_table *wait)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
+
+ if (vpfe_dev->started)
+ return videobuf_poll_stream(file,
+ &vpfe_dev->buffer_queue, wait);
+ return 0;
+}
+
+/* vpfe capture driver file operations */
+static const struct v4l2_file_operations vpfe_fops = {
+ .owner = THIS_MODULE,
+ .open = vpfe_open,
+ .release = vpfe_release,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vpfe_mmap,
+ .poll = vpfe_poll
+};
+
+/*
+ * vpfe_check_format()
+ * This function adjust the input pixel format as per hardware
+ * capabilities and update the same in pixfmt.
+ * Following algorithm used :-
+ *
+ * If given pixformat is not in the vpfe list of pix formats or not
+ * supported by the hardware, current value of pixformat in the device
+ * is used
+ * If given field is not supported, then current field is used. If field
+ * is different from current, then it is matched with that from sub device.
+ * Minimum height is 2 lines for interlaced or tb field and 1 line for
+ * progressive. Maximum height is clamped to active active lines of scan
+ * Minimum width is 32 bytes in memory and width is clamped to active
+ * pixels of scan.
+ * bytesperline is a multiple of 32.
+ */
+static const struct vpfe_pixel_format *
+ vpfe_check_format(struct vpfe_device *vpfe_dev,
+ struct v4l2_pix_format *pixfmt)
+{
+ u32 min_height = 1, min_width = 32, max_width, max_height;
+ const struct vpfe_pixel_format *vpfe_pix_fmt;
+ u32 pix;
+ int temp, found;
+
+ vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
+ if (NULL == vpfe_pix_fmt) {
+ /*
+ * use current pixel format in the vpfe device. We
+ * will find this pix format in the table
+ */
+ pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
+ vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
+ }
+
+ /* check if hw supports it */
+ temp = 0;
+ found = 0;
+ while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
+ if (vpfe_pix_fmt->fmtdesc.pixelformat == pix) {
+ found = 1;
+ break;
+ }
+ temp++;
+ }
+
+ if (!found) {
+ /* use current pixel format */
+ pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
+ /*
+ * Since this is currently used in the vpfe device, we
+ * will find this pix format in the table
+ */
+ vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
+ }
+
+ /* check what field format is supported */
+ if (pixfmt->field == V4L2_FIELD_ANY) {
+ /* if field is any, use current value as default */
+ pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
+ }
+
+ /*
+ * if field is not same as current field in the vpfe device
+ * try matching the field with the sub device field
+ */
+ if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
+ /*
+ * If field value is not in the supported fields, use current
+ * field used in the device as default
+ */
+ switch (pixfmt->field) {
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_SEQ_TB:
+ /* if sub device is supporting progressive, use that */
+ if (!vpfe_dev->std_info.frame_format)
+ pixfmt->field = V4L2_FIELD_NONE;
+ break;
+ case V4L2_FIELD_NONE:
+ if (vpfe_dev->std_info.frame_format)
+ pixfmt->field = V4L2_FIELD_INTERLACED;
+ break;
+
+ default:
+ /* use current field as default */
+ pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
+ break;
+ }
+ }
+
+ /* Now adjust image resolutions supported */
+ if (pixfmt->field == V4L2_FIELD_INTERLACED ||
+ pixfmt->field == V4L2_FIELD_SEQ_TB)
+ min_height = 2;
+
+ max_width = vpfe_dev->std_info.active_pixels;
+ max_height = vpfe_dev->std_info.active_lines;
+ min_width /= vpfe_pix_fmt->bpp;
+
+ v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
+ pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
+
+ pixfmt->width = clamp((pixfmt->width), min_width, max_width);
+ pixfmt->height = clamp((pixfmt->height), min_height, max_height);
+
+ /* If interlaced, adjust height to be a multiple of 2 */
+ if (pixfmt->field == V4L2_FIELD_INTERLACED)
+ pixfmt->height &= (~1);
+ /*
+ * recalculate bytesperline and sizeimage since width
+ * and height might have changed
+ */
+ pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
+ & ~31);
+ if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
+ pixfmt->sizeimage =
+ pixfmt->bytesperline * pixfmt->height +
+ ((pixfmt->bytesperline * pixfmt->height) >> 1);
+ else
+ pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
+
+ v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height ="
+ " %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
+ pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
+ pixfmt->bytesperline, pixfmt->sizeimage);
+ return vpfe_pix_fmt;
+}
+
+static int vpfe_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
+
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
+ strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
+ strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
+ return 0;
+}
+
+static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
+ /* Fill in the information about format */
+ *fmt = vpfe_dev->fmt;
+ return 0;
+}
+
+static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ const struct vpfe_pixel_format *pix_fmt;
+ int temp_index;
+ u32 pix;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
+
+ if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
+ return -EINVAL;
+
+ /* Fill in the information about format */
+ pix_fmt = vpfe_lookup_pix_format(pix);
+ if (NULL != pix_fmt) {
+ temp_index = fmt->index;
+ *fmt = pix_fmt->fmtdesc;
+ fmt->index = temp_index;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ const struct vpfe_pixel_format *pix_fmts;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
+
+ /* If streaming is started, return error */
+ if (vpfe_dev->started) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+
+ /* Check for valid frame format */
+ pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
+
+ if (NULL == pix_fmts)
+ return -EINVAL;
+
+ /* store the pixel format in the device object */
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ /* First detach any IRQ if currently attached */
+ vpfe_detach_irq(vpfe_dev);
+ vpfe_dev->fmt = *fmt;
+ /* set image capture parameters in the ccdc */
+ ret = vpfe_config_ccdc_image_format(vpfe_dev);
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ const struct vpfe_pixel_format *pix_fmts;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
+
+ pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
+ if (NULL == pix_fmts)
+ return -EINVAL;
+ return 0;
+}
+
+/*
+ * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
+ * given app input index
+ */
+static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
+ int *subdev_index,
+ int *subdev_input_index,
+ int app_input_index)
+{
+ struct vpfe_config *cfg = vpfe_dev->cfg;
+ struct vpfe_subdev_info *sdinfo;
+ int i, j = 0;
+
+ for (i = 0; i < cfg->num_subdevs; i++) {
+ sdinfo = &cfg->sub_devs[i];
+ if (app_input_index < (j + sdinfo->num_inputs)) {
+ *subdev_index = i;
+ *subdev_input_index = app_input_index - j;
+ return 0;
+ }
+ j += sdinfo->num_inputs;
+ }
+ return -EINVAL;
+}
+
+/*
+ * vpfe_get_app_input - Get app input index for a given subdev input index
+ * driver stores the input index of the current sub device and translate it
+ * when application request the current input
+ */
+static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
+ int *app_input_index)
+{
+ struct vpfe_config *cfg = vpfe_dev->cfg;
+ struct vpfe_subdev_info *sdinfo;
+ int i, j = 0;
+
+ for (i = 0; i < cfg->num_subdevs; i++) {
+ sdinfo = &cfg->sub_devs[i];
+ if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
+ if (vpfe_dev->current_input >= sdinfo->num_inputs)
+ return -1;
+ *app_input_index = j + vpfe_dev->current_input;
+ return 0;
+ }
+ j += sdinfo->num_inputs;
+ }
+ return -EINVAL;
+}
+
+static int vpfe_enum_input(struct file *file, void *priv,
+ struct v4l2_input *inp)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int subdev, index ;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
+
+ if (vpfe_get_subdev_input_index(vpfe_dev,
+ &subdev,
+ &index,
+ inp->index) < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "input information not found"
+ " for the subdev\n");
+ return -EINVAL;
+ }
+ sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
+ memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input));
+ return 0;
+}
+
+static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
+
+ return vpfe_get_app_input_index(vpfe_dev, index);
+}
+
+
+static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct v4l2_subdev *sd;
+ struct vpfe_subdev_info *sdinfo;
+ int subdev_index, inp_index;
+ struct vpfe_route *route;
+ u32 input = 0, output = 0;
+ int ret = -EINVAL;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ /*
+ * If streaming is started return device busy
+ * error
+ */
+ if (vpfe_dev->started) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
+ ret = -EBUSY;
+ goto unlock_out;
+ }
+ ret = vpfe_get_subdev_input_index(vpfe_dev,
+ &subdev_index,
+ &inp_index,
+ index);
+ if (ret < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
+ goto unlock_out;
+ }
+
+ sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
+ sd = vpfe_dev->sd[subdev_index];
+ route = &sdinfo->routes[inp_index];
+ if (route && sdinfo->can_route) {
+ input = route->input;
+ output = route->output;
+ }
+
+ if (sd)
+ ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
+
+ if (ret) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "vpfe_doioctl:error in setting input in decoder\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+ vpfe_dev->current_subdev = sdinfo;
+ if (sd)
+ vpfe_dev->v4l2_dev.ctrl_handler = sd->ctrl_handler;
+ vpfe_dev->current_input = index;
+ vpfe_dev->std_index = 0;
+
+ /* set the bus/interface parameter for the sub device in ccdc */
+ ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
+ if (ret)
+ goto unlock_out;
+
+ /* set the default image parameters in the device */
+ ret = vpfe_config_image_format(vpfe_dev,
+ vpfe_standards[vpfe_dev->std_index].std_id);
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ sdinfo = vpfe_dev->current_subdev;
+ if (ret)
+ return ret;
+ /* Call querystd function of decoder device */
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+ video, querystd, std_id);
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
+
+ /* Call decoder driver function to set the standard */
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ sdinfo = vpfe_dev->current_subdev;
+ /* If streaming is started, return device busy error */
+ if (vpfe_dev->started) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
+ ret = -EBUSY;
+ goto unlock_out;
+ }
+
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+ video, s_std, std_id);
+ if (ret < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
+ goto unlock_out;
+ }
+ ret = vpfe_config_image_format(vpfe_dev, std_id);
+
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
+
+ *std_id = vpfe_standards[vpfe_dev->std_index].std_id;
+ return 0;
+}
+/*
+ * Videobuf operations
+ */
+static int vpfe_videobuf_setup(struct videobuf_queue *vq,
+ unsigned int *count,
+ unsigned int *size)
+{
+ struct vpfe_fh *fh = vq->priv_data;
+ struct vpfe_device *vpfe_dev = fh->vpfe_dev;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
+ *size = vpfe_dev->fmt.fmt.pix.sizeimage;
+ if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
+ vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
+ *size = config_params.device_bufsize;
+
+ if (*count < config_params.min_numbuffers)
+ *count = config_params.min_numbuffers;
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "count=%d, size=%d\n", *count, *size);
+ return 0;
+}
+
+static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct vpfe_fh *fh = vq->priv_data;
+ struct vpfe_device *vpfe_dev = fh->vpfe_dev;
+ unsigned long addr;
+ int ret;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
+
+ /* If buffer is not initialized, initialize it */
+ if (VIDEOBUF_NEEDS_INIT == vb->state) {
+ vb->width = vpfe_dev->fmt.fmt.pix.width;
+ vb->height = vpfe_dev->fmt.fmt.pix.height;
+ vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
+ vb->field = field;
+
+ ret = videobuf_iolock(vq, vb, NULL);
+ if (ret < 0)
+ return ret;
+
+ addr = videobuf_to_dma_contig(vb);
+ /* Make sure user addresses are aligned to 32 bytes */
+ if (!ALIGN(addr, 32))
+ return -EINVAL;
+
+ vb->state = VIDEOBUF_PREPARED;
+ }
+ return 0;
+}
+
+static void vpfe_videobuf_queue(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
+{
+ /* Get the file handle object and device object */
+ struct vpfe_fh *fh = vq->priv_data;
+ struct vpfe_device *vpfe_dev = fh->vpfe_dev;
+ unsigned long flags;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
+
+ /* add the buffer to the DMA queue */
+ spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
+ list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
+ spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
+
+ /* Change state of the buffer */
+ vb->state = VIDEOBUF_QUEUED;
+}
+
+static void vpfe_videobuf_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
+{
+ struct vpfe_fh *fh = vq->priv_data;
+ struct vpfe_device *vpfe_dev = fh->vpfe_dev;
+ unsigned long flags;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
+
+ /*
+ * We need to flush the buffer from the dma queue since
+ * they are de-allocated
+ */
+ spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
+ INIT_LIST_HEAD(&vpfe_dev->dma_queue);
+ spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
+ videobuf_dma_contig_free(vq, vb);
+ vb->state = VIDEOBUF_NEEDS_INIT;
+}
+
+static struct videobuf_queue_ops vpfe_videobuf_qops = {
+ .buf_setup = vpfe_videobuf_setup,
+ .buf_prepare = vpfe_videobuf_prepare,
+ .buf_queue = vpfe_videobuf_queue,
+ .buf_release = vpfe_videobuf_release,
+};
+
+/*
+ * vpfe_reqbufs. currently support REQBUF only once opening
+ * the device.
+ */
+static int vpfe_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *req_buf)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ if (vpfe_dev->io_usrs != 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
+ ret = -EBUSY;
+ goto unlock_out;
+ }
+
+ vpfe_dev->memory = req_buf->memory;
+ videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
+ &vpfe_videobuf_qops,
+ vpfe_dev->pdev,
+ &vpfe_dev->irqlock,
+ req_buf->type,
+ vpfe_dev->fmt.fmt.pix.field,
+ sizeof(struct videobuf_buffer),
+ fh, NULL);
+
+ fh->io_allowed = 1;
+ vpfe_dev->io_usrs = 1;
+ INIT_LIST_HEAD(&vpfe_dev->dma_queue);
+ ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
+ return -EINVAL;
+ }
+ /* Call videobuf_querybuf to get information */
+ return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
+}
+
+static int vpfe_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *p)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /*
+ * If this file handle is not allowed to do IO,
+ * return error
+ */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+ return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
+}
+
+static int vpfe_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+ return videobuf_dqbuf(&vpfe_dev->buffer_queue,
+ buf, file->f_flags & O_NONBLOCK);
+}
+
+/*
+ * vpfe_calculate_offsets : This function calculates buffers offset
+ * for top and bottom field
+ */
+static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
+{
+ struct v4l2_rect image_win;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
+
+ ccdc_dev->hw_ops.get_image_window(&image_win);
+ vpfe_dev->field_off = image_win.height * image_win.width;
+}
+
+/* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
+static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
+{
+ ccdc_dev->hw_ops.enable(1);
+ if (ccdc_dev->hw_ops.enable_out_to_sdram)
+ ccdc_dev->hw_ops.enable_out_to_sdram(1);
+ vpfe_dev->started = 1;
+}
+
+/*
+ * vpfe_streamon. Assume the DMA queue is not empty.
+ * application is expected to call QBUF before calling
+ * this ioctl. If not, driver returns error
+ */
+static int vpfe_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ unsigned long addr;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /* If file handle is not allowed IO, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ sdinfo = vpfe_dev->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+ video, s_stream, 1);
+
+ if (ret && (ret != -ENOIOCTLCMD)) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
+ return -EINVAL;
+ }
+
+ /* If buffer queue is empty, return error */
+ if (list_empty(&vpfe_dev->buffer_queue.stream)) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
+ return -EIO;
+ }
+
+ /* Call videobuf_streamon to start streaming * in videobuf */
+ ret = videobuf_streamon(&vpfe_dev->buffer_queue);
+ if (ret)
+ return ret;
+
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ goto streamoff;
+ /* Get the next frame from the buffer queue */
+ vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
+ struct videobuf_buffer, queue);
+ vpfe_dev->cur_frm = vpfe_dev->next_frm;
+ /* Remove buffer from the buffer queue */
+ list_del(&vpfe_dev->cur_frm->queue);
+ /* Mark state of the current frame to active */
+ vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
+ /* Initialize field_id and started member */
+ vpfe_dev->field_id = 0;
+ addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
+
+ /* Calculate field offset */
+ vpfe_calculate_offsets(vpfe_dev);
+
+ if (vpfe_attach_irq(vpfe_dev) < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Error in attaching interrupt handle\n");
+ ret = -EFAULT;
+ goto unlock_out;
+ }
+ if (ccdc_dev->hw_ops.configure() < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Error in configuring ccdc\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+ ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
+ vpfe_start_ccdc_capture(vpfe_dev);
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+streamoff:
+ ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
+ return ret;
+}
+
+static int vpfe_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /* If io is allowed for this file handle, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ /* If streaming is not started, return error */
+ if (!vpfe_dev->started) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ vpfe_stop_ccdc_capture(vpfe_dev);
+ vpfe_detach_irq(vpfe_dev);
+
+ sdinfo = vpfe_dev->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+ video, s_stream, 0);
+
+ if (ret && (ret != -ENOIOCTLCMD))
+ v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
+ ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+static int vpfe_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *crop)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_cropcap\n");
+
+ if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
+ return -EINVAL;
+
+ memset(crop, 0, sizeof(struct v4l2_cropcap));
+ crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ crop->bounds.width = crop->defrect.width =
+ vpfe_standards[vpfe_dev->std_index].width;
+ crop->bounds.height = crop->defrect.height =
+ vpfe_standards[vpfe_dev->std_index].height;
+ crop->pixelaspect = vpfe_standards[vpfe_dev->std_index].pixelaspect;
+ return 0;
+}
+
+static int vpfe_g_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_crop\n");
+
+ crop->c = vpfe_dev->crop;
+ return 0;
+}
+
+static int vpfe_s_crop(struct file *file, void *priv,
+ const struct v4l2_crop *crop)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ struct v4l2_rect rect = crop->c;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_crop\n");
+
+ if (vpfe_dev->started) {
+ /* make sure streaming is not started */
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Cannot change crop when streaming is ON\n");
+ return -EBUSY;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ if (rect.top < 0 || rect.left < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "doesn't support negative values for top & left\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+
+ /* adjust the width to 16 pixel boundary */
+ rect.width = ((rect.width + 15) & ~0xf);
+
+ /* make sure parameters are valid */
+ if ((rect.left + rect.width >
+ vpfe_dev->std_info.active_pixels) ||
+ (rect.top + rect.height >
+ vpfe_dev->std_info.active_lines)) {
+ v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_CROP params\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+ ccdc_dev->hw_ops.set_image_window(&rect);
+ vpfe_dev->fmt.fmt.pix.width = rect.width;
+ vpfe_dev->fmt.fmt.pix.height = rect.height;
+ vpfe_dev->fmt.fmt.pix.bytesperline =
+ ccdc_dev->hw_ops.get_line_length();
+ vpfe_dev->fmt.fmt.pix.sizeimage =
+ vpfe_dev->fmt.fmt.pix.bytesperline *
+ vpfe_dev->fmt.fmt.pix.height;
+ vpfe_dev->crop = rect;
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+
+static long vpfe_param_handler(struct file *file, void *priv,
+ bool valid_prio, unsigned int cmd, void *param)
+{
+ struct vpfe_device *vpfe_dev = video_drvdata(file);
+ int ret = 0;
+
+ v4l2_dbg(2, debug, &vpfe_dev->v4l2_dev, "vpfe_param_handler\n");
+
+ if (vpfe_dev->started) {
+ /* only allowed if streaming is not started */
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "device already started\n");
+ return -EBUSY;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe_dev->lock);
+ if (ret)
+ return ret;
+
+ switch (cmd) {
+ case VPFE_CMD_S_CCDC_RAW_PARAMS:
+ v4l2_warn(&vpfe_dev->v4l2_dev,
+ "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
+ if (ccdc_dev->hw_ops.set_params) {
+ ret = ccdc_dev->hw_ops.set_params(param);
+ if (ret) {
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "Error setting parameters in CCDC\n");
+ goto unlock_out;
+ }
+ ret = vpfe_get_ccdc_image_format(vpfe_dev,
+ &vpfe_dev->fmt);
+ if (ret < 0) {
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "Invalid image format at CCDC\n");
+ goto unlock_out;
+ }
+ } else {
+ ret = -EINVAL;
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
+ }
+ break;
+ default:
+ ret = -ENOTTY;
+ }
+unlock_out:
+ mutex_unlock(&vpfe_dev->lock);
+ return ret;
+}
+
+
+/* vpfe capture ioctl operations */
+static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
+ .vidioc_querycap = vpfe_querycap,
+ .vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap,
+ .vidioc_enum_input = vpfe_enum_input,
+ .vidioc_g_input = vpfe_g_input,
+ .vidioc_s_input = vpfe_s_input,
+ .vidioc_querystd = vpfe_querystd,
+ .vidioc_s_std = vpfe_s_std,
+ .vidioc_g_std = vpfe_g_std,
+ .vidioc_reqbufs = vpfe_reqbufs,
+ .vidioc_querybuf = vpfe_querybuf,
+ .vidioc_qbuf = vpfe_qbuf,
+ .vidioc_dqbuf = vpfe_dqbuf,
+ .vidioc_streamon = vpfe_streamon,
+ .vidioc_streamoff = vpfe_streamoff,
+ .vidioc_cropcap = vpfe_cropcap,
+ .vidioc_g_crop = vpfe_g_crop,
+ .vidioc_s_crop = vpfe_s_crop,
+ .vidioc_default = vpfe_param_handler,
+};
+
+static struct vpfe_device *vpfe_initialize(void)
+{
+ struct vpfe_device *vpfe_dev;
+
+ /* Default number of buffers should be 3 */
+ if ((numbuffers > 0) &&
+ (numbuffers < config_params.min_numbuffers))
+ numbuffers = config_params.min_numbuffers;
+
+ /*
+ * Set buffer size to min buffers size if invalid buffer size is
+ * given
+ */
+ if (bufsize < config_params.min_bufsize)
+ bufsize = config_params.min_bufsize;
+
+ config_params.numbuffers = numbuffers;
+
+ if (numbuffers)
+ config_params.device_bufsize = bufsize;
+
+ /* Allocate memory for device objects */
+ vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
+
+ return vpfe_dev;
+}
+
+/*
+ * vpfe_probe : This function creates device entries by register
+ * itself to the V4L2 driver and initializes fields of each
+ * device objects
+ */
+static int vpfe_probe(struct platform_device *pdev)
+{
+ struct vpfe_subdev_info *sdinfo;
+ struct vpfe_config *vpfe_cfg;
+ struct resource *res1;
+ struct vpfe_device *vpfe_dev;
+ struct i2c_adapter *i2c_adap;
+ struct video_device *vfd;
+ int ret = -ENOMEM, i, j;
+ int num_subdevs = 0;
+
+ /* Get the pointer to the device object */
+ vpfe_dev = vpfe_initialize();
+
+ if (!vpfe_dev) {
+ v4l2_err(pdev->dev.driver,
+ "Failed to allocate memory for vpfe_dev\n");
+ return ret;
+ }
+
+ vpfe_dev->pdev = &pdev->dev;
+
+ if (NULL == pdev->dev.platform_data) {
+ v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
+ ret = -ENODEV;
+ goto probe_free_dev_mem;
+ }
+
+ vpfe_cfg = pdev->dev.platform_data;
+ vpfe_dev->cfg = vpfe_cfg;
+ if (NULL == vpfe_cfg->ccdc ||
+ NULL == vpfe_cfg->card_name ||
+ NULL == vpfe_cfg->sub_devs) {
+ v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+
+ /* Allocate memory for ccdc configuration */
+ ccdc_cfg = kmalloc(sizeof(struct ccdc_config), GFP_KERNEL);
+ if (NULL == ccdc_cfg) {
+ v4l2_err(pdev->dev.driver,
+ "Memory allocation failed for ccdc_cfg\n");
+ goto probe_free_dev_mem;
+ }
+
+ mutex_lock(&ccdc_lock);
+
+ strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
+ /* Get VINT0 irq resource */
+ res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res1) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to get interrupt for VINT0\n");
+ ret = -ENODEV;
+ goto probe_free_ccdc_cfg_mem;
+ }
+ vpfe_dev->ccdc_irq0 = res1->start;
+
+ /* Get VINT1 irq resource */
+ res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (!res1) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to get interrupt for VINT1\n");
+ ret = -ENODEV;
+ goto probe_free_ccdc_cfg_mem;
+ }
+ vpfe_dev->ccdc_irq1 = res1->start;
+
+ ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
+ "vpfe_capture0", vpfe_dev);
+
+ if (0 != ret) {
+ v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
+ goto probe_free_ccdc_cfg_mem;
+ }
+
+ vfd = &vpfe_dev->video_dev;
+ /* Initialize field of video device */
+ vfd->release = video_device_release_empty;
+ vfd->fops = &vpfe_fops;
+ vfd->ioctl_ops = &vpfe_ioctl_ops;
+ vfd->tvnorms = 0;
+ vfd->v4l2_dev = &vpfe_dev->v4l2_dev;
+ snprintf(vfd->name, sizeof(vfd->name),
+ "%s_V%d.%d.%d",
+ CAPTURE_DRV_NAME,
+ (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
+ (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
+ (VPFE_CAPTURE_VERSION_CODE) & 0xff);
+
+ ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
+ if (ret) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to register v4l2 device.\n");
+ goto probe_out_release_irq;
+ }
+ v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
+ spin_lock_init(&vpfe_dev->irqlock);
+ spin_lock_init(&vpfe_dev->dma_queue_lock);
+ mutex_init(&vpfe_dev->lock);
+
+ /* Initialize field of the device objects */
+ vpfe_dev->numbuffers = config_params.numbuffers;
+
+ /* register video device */
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "trying to register vpfe device.\n");
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+ "video_dev=%p\n", &vpfe_dev->video_dev);
+ vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ ret = video_register_device(&vpfe_dev->video_dev,
+ VFL_TYPE_GRABBER, -1);
+
+ if (ret) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to register video device.\n");
+ goto probe_out_v4l2_unregister;
+ }
+
+ v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
+ /* set the driver data in platform device */
+ platform_set_drvdata(pdev, vpfe_dev);
+ /* set driver private data */
+ video_set_drvdata(&vpfe_dev->video_dev, vpfe_dev);
+ i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
+ num_subdevs = vpfe_cfg->num_subdevs;
+ vpfe_dev->sd = kmalloc(sizeof(struct v4l2_subdev *) * num_subdevs,
+ GFP_KERNEL);
+ if (NULL == vpfe_dev->sd) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "unable to allocate memory for subdevice pointers\n");
+ ret = -ENOMEM;
+ goto probe_out_video_unregister;
+ }
+
+ for (i = 0; i < num_subdevs; i++) {
+ struct v4l2_input *inps;
+
+ sdinfo = &vpfe_cfg->sub_devs[i];
+
+ /* Load up the subdevice */
+ vpfe_dev->sd[i] =
+ v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
+ i2c_adap,
+ &sdinfo->board_info,
+ NULL);
+ if (vpfe_dev->sd[i]) {
+ v4l2_info(&vpfe_dev->v4l2_dev,
+ "v4l2 sub device %s registered\n",
+ sdinfo->name);
+ vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
+ /* update tvnorms from the sub devices */
+ for (j = 0; j < sdinfo->num_inputs; j++) {
+ inps = &sdinfo->inputs[j];
+ vfd->tvnorms |= inps->std;
+ }
+ } else {
+ v4l2_info(&vpfe_dev->v4l2_dev,
+ "v4l2 sub device %s register fails\n",
+ sdinfo->name);
+ goto probe_sd_out;
+ }
+ }
+
+ /* set first sub device as current one */
+ vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
+ vpfe_dev->v4l2_dev.ctrl_handler = vpfe_dev->sd[0]->ctrl_handler;
+
+ /* We have at least one sub device to work with */
+ mutex_unlock(&ccdc_lock);
+ return 0;
+
+probe_sd_out:
+ kfree(vpfe_dev->sd);
+probe_out_video_unregister:
+ video_unregister_device(&vpfe_dev->video_dev);
+probe_out_v4l2_unregister:
+ v4l2_device_unregister(&vpfe_dev->v4l2_dev);
+probe_out_release_irq:
+ free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
+probe_free_ccdc_cfg_mem:
+ kfree(ccdc_cfg);
+ mutex_unlock(&ccdc_lock);
+probe_free_dev_mem:
+ kfree(vpfe_dev);
+ return ret;
+}
+
+/*
+ * vpfe_remove : It un-register device from V4L2 driver
+ */
+static int vpfe_remove(struct platform_device *pdev)
+{
+ struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
+
+ v4l2_info(pdev->dev.driver, "vpfe_remove\n");
+
+ free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
+ kfree(vpfe_dev->sd);
+ v4l2_device_unregister(&vpfe_dev->v4l2_dev);
+ video_unregister_device(&vpfe_dev->video_dev);
+ kfree(vpfe_dev);
+ kfree(ccdc_cfg);
+ return 0;
+}
+
+static int vpfe_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static int vpfe_resume(struct device *dev)
+{
+ return 0;
+}
+
+static const struct dev_pm_ops vpfe_dev_pm_ops = {
+ .suspend = vpfe_suspend,
+ .resume = vpfe_resume,
+};
+
+static struct platform_driver vpfe_driver = {
+ .driver = {
+ .name = CAPTURE_DRV_NAME,
+ .pm = &vpfe_dev_pm_ops,
+ },
+ .probe = vpfe_probe,
+ .remove = vpfe_remove,
+};
+
+module_platform_driver(vpfe_driver);
Code Review / kvmfornfv.git / blobdiff