--- /dev/null
+/*
+ * Samsung S5P SoC series camera interface (camera capture) driver
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd
+ * Author: Sylwester Nawrocki, <s.nawrocki@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/bug.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/i2c.h>
+
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf-core.h>
+#include <media/videobuf-dma-contig.h>
+
+#include "fimc-core.h"
+
+static struct v4l2_subdev *fimc_subdev_register(struct fimc_dev *fimc,
+ struct s3c_fimc_isp_info *isp_info)
+{
+ struct i2c_adapter *i2c_adap;
+ struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
+ struct v4l2_subdev *sd = NULL;
+
+ i2c_adap = i2c_get_adapter(isp_info->i2c_bus_num);
+ if (!i2c_adap)
+ return ERR_PTR(-ENOMEM);
+
+ sd = v4l2_i2c_new_subdev_board(&vid_cap->v4l2_dev, i2c_adap,
+ isp_info->board_info, NULL);
+ if (!sd) {
+ v4l2_err(&vid_cap->v4l2_dev, "failed to acquire subdev\n");
+ return NULL;
+ }
+
+ v4l2_info(&vid_cap->v4l2_dev, "subdevice %s registered successfuly\n",
+ isp_info->board_info->type);
+
+ return sd;
+}
+
+static void fimc_subdev_unregister(struct fimc_dev *fimc)
+{
+ struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
+ struct i2c_client *client;
+
+ if (vid_cap->input_index < 0)
+ return; /* Subdevice already released or not registered. */
+
+ if (vid_cap->sd) {
+ v4l2_device_unregister_subdev(vid_cap->sd);
+ client = v4l2_get_subdevdata(vid_cap->sd);
+ i2c_unregister_device(client);
+ i2c_put_adapter(client->adapter);
+ vid_cap->sd = NULL;
+ }
+
+ vid_cap->input_index = -1;
+}
+
+/**
+ * fimc_subdev_attach - attach v4l2_subdev to camera host interface
+ *
+ * @fimc: FIMC device information
+ * @index: index to the array of available subdevices,
+ * -1 for full array search or non negative value
+ * to select specific subdevice
+ */
+static int fimc_subdev_attach(struct fimc_dev *fimc, int index)
+{
+ struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
+ struct s3c_platform_fimc *pdata = fimc->pdata;
+ struct s3c_fimc_isp_info *isp_info;
+ struct v4l2_subdev *sd;
+ int i;
+
+ for (i = 0; i < FIMC_MAX_CAMIF_CLIENTS; ++i) {
+ isp_info = pdata->isp_info[i];
+
+ if (!isp_info || (index >= 0 && i != index))
+ continue;
+
+ sd = fimc_subdev_register(fimc, isp_info);
+ if (sd) {
+ vid_cap->sd = sd;
+ vid_cap->input_index = i;
+
+ return 0;
+ }
+ }
+
+ vid_cap->input_index = -1;
+ vid_cap->sd = NULL;
+ v4l2_err(&vid_cap->v4l2_dev, "fimc%d: sensor attach failed\n",
+ fimc->id);
+ return -ENODEV;
+}
+
+static int fimc_isp_subdev_init(struct fimc_dev *fimc, int index)
+{
+ struct s3c_fimc_isp_info *isp_info;
+ int ret;
+
+ ret = fimc_subdev_attach(fimc, index);
+ if (ret)
+ return ret;
+
+ isp_info = fimc->pdata->isp_info[fimc->vid_cap.input_index];
+ ret = fimc_hw_set_camera_polarity(fimc, isp_info);
+ if (!ret) {
+ ret = v4l2_subdev_call(fimc->vid_cap.sd, core,
+ s_power, 1);
+ if (!ret)
+ return ret;
+ }
+
+ fimc_subdev_unregister(fimc);
+ err("ISP initialization failed: %d", ret);
+ return ret;
+}
+
+/*
+ * At least one buffer on the pending_buf_q queue is required.
+ * Locking: The caller holds fimc->slock spinlock.
+ */
+int fimc_vid_cap_buf_queue(struct fimc_dev *fimc,
+ struct fimc_vid_buffer *fimc_vb)
+{
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ struct fimc_ctx *ctx = cap->ctx;
+ int ret = 0;
+
+ BUG_ON(!fimc || !fimc_vb);
+
+ ret = fimc_prepare_addr(ctx, fimc_vb, &ctx->d_frame,
+ &fimc_vb->paddr);
+ if (ret)
+ return ret;
+
+ if (test_bit(ST_CAPT_STREAM, &fimc->state)) {
+ fimc_pending_queue_add(cap, fimc_vb);
+ } else {
+ /* Setup the buffer directly for processing. */
+ int buf_id = (cap->reqbufs_count == 1) ? -1 : cap->buf_index;
+ fimc_hw_set_output_addr(fimc, &fimc_vb->paddr, buf_id);
+
+ fimc_vb->index = cap->buf_index;
+ active_queue_add(cap, fimc_vb);
+
+ if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
+ cap->buf_index = 0;
+ }
+ return ret;
+}
+
+static int fimc_stop_capture(struct fimc_dev *fimc)
+{
+ unsigned long flags;
+ struct fimc_vid_cap *cap;
+ int ret;
+
+ cap = &fimc->vid_cap;
+
+ if (!fimc_capture_active(fimc))
+ return 0;
+
+ spin_lock_irqsave(&fimc->slock, flags);
+ set_bit(ST_CAPT_SHUT, &fimc->state);
+ fimc_deactivate_capture(fimc);
+ spin_unlock_irqrestore(&fimc->slock, flags);
+
+ wait_event_timeout(fimc->irq_queue,
+ test_bit(ST_CAPT_SHUT, &fimc->state),
+ FIMC_SHUTDOWN_TIMEOUT);
+
+ ret = v4l2_subdev_call(cap->sd, video, s_stream, 0);
+ if (ret)
+ v4l2_err(&fimc->vid_cap.v4l2_dev, "s_stream(0) failed\n");
+
+ spin_lock_irqsave(&fimc->slock, flags);
+ fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
+ 1 << ST_CAPT_STREAM);
+
+ fimc->vid_cap.active_buf_cnt = 0;
+ spin_unlock_irqrestore(&fimc->slock, flags);
+
+ dbg("state: 0x%lx", fimc->state);
+ return 0;
+}
+
+static int fimc_capture_open(struct file *file)
+{
+ struct fimc_dev *fimc = video_drvdata(file);
+ int ret = 0;
+
+ dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
+
+ /* Return if the corresponding video mem2mem node is already opened. */
+ if (fimc_m2m_active(fimc))
+ return -EBUSY;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ if (++fimc->vid_cap.refcnt == 1) {
+ ret = fimc_isp_subdev_init(fimc, -1);
+ if (ret) {
+ fimc->vid_cap.refcnt--;
+ ret = -EIO;
+ }
+ }
+
+ file->private_data = fimc->vid_cap.ctx;
+
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_capture_close(struct file *file)
+{
+ struct fimc_dev *fimc = video_drvdata(file);
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
+
+ if (--fimc->vid_cap.refcnt == 0) {
+ fimc_stop_capture(fimc);
+
+ videobuf_stop(&fimc->vid_cap.vbq);
+ videobuf_mmap_free(&fimc->vid_cap.vbq);
+
+ v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
+ v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
+ fimc_subdev_unregister(fimc);
+ }
+
+ mutex_unlock(&fimc->lock);
+ return 0;
+}
+
+static unsigned int fimc_capture_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct fimc_ctx *ctx = file->private_data;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ int ret;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return POLLERR;
+
+ ret = videobuf_poll_stream(file, &cap->vbq, wait);
+ mutex_unlock(&fimc->lock);
+
+ return ret;
+}
+
+static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct fimc_ctx *ctx = file->private_data;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ int ret;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ ret = videobuf_mmap_mapper(&cap->vbq, vma);
+ mutex_unlock(&fimc->lock);
+
+ return ret;
+}
+
+/* video device file operations */
+static const struct v4l2_file_operations fimc_capture_fops = {
+ .owner = THIS_MODULE,
+ .open = fimc_capture_open,
+ .release = fimc_capture_close,
+ .poll = fimc_capture_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = fimc_capture_mmap,
+};
+
+static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct fimc_ctx *ctx = file->private_data;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+
+ strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
+ strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
+ cap->bus_info[0] = 0;
+ cap->version = KERNEL_VERSION(1, 0, 0);
+ cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
+
+ return 0;
+}
+
+/* Synchronize formats of the camera interface input and attached sensor. */
+static int sync_capture_fmt(struct fimc_ctx *ctx)
+{
+ struct fimc_frame *frame = &ctx->s_frame;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
+ int ret;
+
+ fmt->width = ctx->d_frame.o_width;
+ fmt->height = ctx->d_frame.o_height;
+
+ ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
+ if (ret == -ENOIOCTLCMD) {
+ err("s_mbus_fmt failed");
+ return ret;
+ }
+ dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
+
+ frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
+ if (!frame->fmt) {
+ err("fimc source format not found\n");
+ return -EINVAL;
+ }
+
+ frame->f_width = fmt->width;
+ frame->f_height = fmt->height;
+ frame->width = fmt->width;
+ frame->height = fmt->height;
+ frame->o_width = fmt->width;
+ frame->o_height = fmt->height;
+ frame->offs_h = 0;
+ frame->offs_v = 0;
+
+ return 0;
+}
+
+static int fimc_cap_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_frame *frame;
+ struct v4l2_pix_format *pix;
+ int ret;
+
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ ret = fimc_vidioc_try_fmt(file, priv, f);
+ if (ret)
+ return ret;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ if (fimc_capture_active(fimc)) {
+ ret = -EBUSY;
+ goto sf_unlock;
+ }
+
+ frame = &ctx->d_frame;
+
+ pix = &f->fmt.pix;
+ frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
+ if (!frame->fmt) {
+ err("fimc target format not found\n");
+ ret = -EINVAL;
+ goto sf_unlock;
+ }
+
+ /* Output DMA frame pixel size and offsets. */
+ frame->f_width = pix->bytesperline * 8 / frame->fmt->depth;
+ frame->f_height = pix->height;
+ frame->width = pix->width;
+ frame->height = pix->height;
+ frame->o_width = pix->width;
+ frame->o_height = pix->height;
+ frame->size = (pix->width * pix->height * frame->fmt->depth) >> 3;
+ frame->offs_h = 0;
+ frame->offs_v = 0;
+
+ ret = sync_capture_fmt(ctx);
+
+ ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
+
+sf_unlock:
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ struct fimc_ctx *ctx = priv;
+ struct s3c_platform_fimc *pldata = ctx->fimc_dev->pdata;
+ struct s3c_fimc_isp_info *isp_info;
+
+ if (i->index >= FIMC_MAX_CAMIF_CLIENTS)
+ return -EINVAL;
+
+ isp_info = pldata->isp_info[i->index];
+ if (isp_info == NULL)
+ return -EINVAL;
+
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ strncpy(i->name, isp_info->board_info->type, 32);
+ return 0;
+}
+
+static int fimc_cap_s_input(struct file *file, void *priv,
+ unsigned int i)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct s3c_platform_fimc *pdata = fimc->pdata;
+ int ret;
+
+ if (fimc_capture_active(ctx->fimc_dev))
+ return -EBUSY;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i]) {
+ ret = -EINVAL;
+ goto si_unlock;
+ }
+
+ if (fimc->vid_cap.sd) {
+ ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
+ if (ret)
+ err("s_power failed: %d", ret);
+ }
+
+ /* Release the attached sensor subdevice. */
+ fimc_subdev_unregister(fimc);
+
+ ret = fimc_isp_subdev_init(fimc, i);
+
+si_unlock:
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_g_input(struct file *file, void *priv,
+ unsigned int *i)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
+
+ *i = cap->input_index;
+ return 0;
+}
+
+static int fimc_cap_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct s3c_fimc_isp_info *isp_info;
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ int ret = -EBUSY;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
+ goto s_unlock;
+
+ if (!(ctx->state & FIMC_DST_FMT)) {
+ v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
+ ret = -EINVAL;
+ goto s_unlock;
+ }
+
+ ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
+ if (ret && ret != -ENOIOCTLCMD)
+ goto s_unlock;
+
+ ret = fimc_prepare_config(ctx, ctx->state);
+ if (ret)
+ goto s_unlock;
+
+ isp_info = fimc->pdata->isp_info[fimc->vid_cap.input_index];
+ fimc_hw_set_camera_type(fimc, isp_info);
+ fimc_hw_set_camera_source(fimc, isp_info);
+ fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
+
+ if (ctx->state & FIMC_PARAMS) {
+ ret = fimc_set_scaler_info(ctx);
+ if (ret) {
+ err("Scaler setup error");
+ goto s_unlock;
+ }
+ fimc_hw_set_input_path(ctx);
+ fimc_hw_set_scaler(ctx);
+ fimc_hw_set_target_format(ctx);
+ fimc_hw_set_rotation(ctx);
+ fimc_hw_set_effect(ctx);
+ }
+
+ fimc_hw_set_output_path(ctx);
+ fimc_hw_set_out_dma(ctx);
+
+ INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
+ INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
+ fimc->vid_cap.active_buf_cnt = 0;
+ fimc->vid_cap.frame_count = 0;
+ fimc->vid_cap.buf_index = fimc_hw_get_frame_index(fimc);
+
+ set_bit(ST_CAPT_PEND, &fimc->state);
+ ret = videobuf_streamon(&fimc->vid_cap.vbq);
+
+s_unlock:
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&fimc->slock, flags);
+ if (!fimc_capture_running(fimc) && !fimc_capture_pending(fimc)) {
+ spin_unlock_irqrestore(&fimc->slock, flags);
+ dbg("state: 0x%lx", fimc->state);
+ return -EINVAL;
+ }
+ spin_unlock_irqrestore(&fimc->slock, flags);
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ fimc_stop_capture(fimc);
+ ret = videobuf_streamoff(&cap->vbq);
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *reqbufs)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ int ret;
+
+ if (fimc_capture_active(ctx->fimc_dev))
+ return -EBUSY;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ ret = videobuf_reqbufs(&cap->vbq, reqbufs);
+ if (!ret)
+ cap->reqbufs_count = reqbufs->count;
+
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
+
+ if (fimc_capture_active(ctx->fimc_dev))
+ return -EBUSY;
+
+ return videobuf_querybuf(&cap->vbq, buf);
+}
+
+static int fimc_cap_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
+ int ret;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ ret = videobuf_qbuf(&cap->vbq, buf);
+
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+static int fimc_cap_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct fimc_ctx *ctx = priv;
+ int ret;
+
+ if (mutex_lock_interruptible(&ctx->fimc_dev->lock))
+ return -ERESTARTSYS;
+
+ ret = videobuf_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
+ file->f_flags & O_NONBLOCK);
+
+ mutex_unlock(&ctx->fimc_dev->lock);
+ return ret;
+}
+
+static int fimc_cap_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct fimc_ctx *ctx = priv;
+ int ret = -EINVAL;
+
+ if (mutex_lock_interruptible(&ctx->fimc_dev->lock))
+ return -ERESTARTSYS;
+
+ /* Allow any controls but 90/270 rotation while streaming */
+ if (!fimc_capture_active(ctx->fimc_dev) ||
+ ctrl->id != V4L2_CID_ROTATE ||
+ (ctrl->value != 90 && ctrl->value != 270)) {
+ ret = check_ctrl_val(ctx, ctrl);
+ if (!ret) {
+ ret = fimc_s_ctrl(ctx, ctrl);
+ if (!ret)
+ ctx->state |= FIMC_PARAMS;
+ }
+ }
+ if (ret == -EINVAL)
+ ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
+ core, s_ctrl, ctrl);
+
+ mutex_unlock(&ctx->fimc_dev->lock);
+ return ret;
+}
+
+static int fimc_cap_cropcap(struct file *file, void *fh,
+ struct v4l2_cropcap *cr)
+{
+ struct fimc_frame *f;
+ struct fimc_ctx *ctx = fh;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+
+ if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ f = &ctx->s_frame;
+ cr->bounds.left = 0;
+ cr->bounds.top = 0;
+ cr->bounds.width = f->o_width;
+ cr->bounds.height = f->o_height;
+ cr->defrect = cr->bounds;
+
+ mutex_unlock(&fimc->lock);
+ return 0;
+}
+
+static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
+{
+ struct fimc_frame *f;
+ struct fimc_ctx *ctx = file->private_data;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ f = &ctx->s_frame;
+ cr->c.left = f->offs_h;
+ cr->c.top = f->offs_v;
+ cr->c.width = f->width;
+ cr->c.height = f->height;
+
+ mutex_unlock(&fimc->lock);
+ return 0;
+}
+
+static int fimc_cap_s_crop(struct file *file, void *fh,
+ struct v4l2_crop *cr)
+{
+ struct fimc_frame *f;
+ struct fimc_ctx *ctx = file->private_data;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+ int ret = -EINVAL;
+
+ if (fimc_capture_active(fimc))
+ return -EBUSY;
+
+ ret = fimc_try_crop(ctx, cr);
+ if (ret)
+ return ret;
+
+ if (mutex_lock_interruptible(&fimc->lock))
+ return -ERESTARTSYS;
+
+ if (!(ctx->state & FIMC_DST_FMT)) {
+ v4l2_err(&fimc->vid_cap.v4l2_dev,
+ "Capture color format not set\n");
+ goto sc_unlock;
+ }
+
+ f = &ctx->s_frame;
+ /* Check for the pixel scaling ratio when cropping input image. */
+ ret = fimc_check_scaler_ratio(&cr->c, &ctx->d_frame);
+ if (ret) {
+ v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range");
+ } else {
+ ret = 0;
+ f->offs_h = cr->c.left;
+ f->offs_v = cr->c.top;
+ f->width = cr->c.width;
+ f->height = cr->c.height;
+ }
+
+sc_unlock:
+ mutex_unlock(&fimc->lock);
+ return ret;
+}
+
+
+static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
+ .vidioc_querycap = fimc_vidioc_querycap_capture,
+
+ .vidioc_enum_fmt_vid_cap = fimc_vidioc_enum_fmt,
+ .vidioc_try_fmt_vid_cap = fimc_vidioc_try_fmt,
+ .vidioc_s_fmt_vid_cap = fimc_cap_s_fmt,
+ .vidioc_g_fmt_vid_cap = fimc_vidioc_g_fmt,
+
+ .vidioc_reqbufs = fimc_cap_reqbufs,
+ .vidioc_querybuf = fimc_cap_querybuf,
+
+ .vidioc_qbuf = fimc_cap_qbuf,
+ .vidioc_dqbuf = fimc_cap_dqbuf,
+
+ .vidioc_streamon = fimc_cap_streamon,
+ .vidioc_streamoff = fimc_cap_streamoff,
+
+ .vidioc_queryctrl = fimc_vidioc_queryctrl,
+ .vidioc_g_ctrl = fimc_vidioc_g_ctrl,
+ .vidioc_s_ctrl = fimc_cap_s_ctrl,
+
+ .vidioc_g_crop = fimc_cap_g_crop,
+ .vidioc_s_crop = fimc_cap_s_crop,
+ .vidioc_cropcap = fimc_cap_cropcap,
+
+ .vidioc_enum_input = fimc_cap_enum_input,
+ .vidioc_s_input = fimc_cap_s_input,
+ .vidioc_g_input = fimc_cap_g_input,
+};
+
+int fimc_register_capture_device(struct fimc_dev *fimc)
+{
+ struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
+ struct video_device *vfd;
+ struct fimc_vid_cap *vid_cap;
+ struct fimc_ctx *ctx;
+ struct v4l2_format f;
+ int ret;
+
+ ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->fimc_dev = fimc;
+ ctx->in_path = FIMC_CAMERA;
+ ctx->out_path = FIMC_DMA;
+ ctx->state = FIMC_CTX_CAP;
+
+ f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24;
+ ctx->d_frame.fmt = find_format(&f, FMT_FLAGS_M2M);
+
+ if (!v4l2_dev->name[0])
+ snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
+ "%s.capture", dev_name(&fimc->pdev->dev));
+
+ ret = v4l2_device_register(NULL, v4l2_dev);
+ if (ret)
+ goto err_info;
+
+ vfd = video_device_alloc();
+ if (!vfd) {
+ v4l2_err(v4l2_dev, "Failed to allocate video device\n");
+ goto err_v4l2_reg;
+ }
+
+ snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
+ dev_name(&fimc->pdev->dev));
+
+ vfd->fops = &fimc_capture_fops;
+ vfd->ioctl_ops = &fimc_capture_ioctl_ops;
+ vfd->minor = -1;
+ vfd->release = video_device_release;
+ video_set_drvdata(vfd, fimc);
+
+ vid_cap = &fimc->vid_cap;
+ vid_cap->vfd = vfd;
+ vid_cap->active_buf_cnt = 0;
+ vid_cap->reqbufs_count = 0;
+ vid_cap->refcnt = 0;
+ /* The default color format for image sensor. */
+ vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
+
+ INIT_LIST_HEAD(&vid_cap->pending_buf_q);
+ INIT_LIST_HEAD(&vid_cap->active_buf_q);
+ spin_lock_init(&ctx->slock);
+ vid_cap->ctx = ctx;
+
+ videobuf_queue_dma_contig_init(&vid_cap->vbq, &fimc_qops,
+ vid_cap->v4l2_dev.dev, &fimc->irqlock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
+ sizeof(struct fimc_vid_buffer), (void *)ctx, NULL);
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(v4l2_dev, "Failed to register video device\n");
+ goto err_vd_reg;
+ }
+
+ v4l2_info(v4l2_dev,
+ "FIMC capture driver registered as /dev/video%d\n",
+ vfd->num);
+
+ return 0;
+
+err_vd_reg:
+ video_device_release(vfd);
+err_v4l2_reg:
+ v4l2_device_unregister(v4l2_dev);
+err_info:
+ dev_err(&fimc->pdev->dev, "failed to install\n");
+ return ret;
+}
+
+void fimc_unregister_capture_device(struct fimc_dev *fimc)
+{
+ struct fimc_vid_cap *capture = &fimc->vid_cap;
+
+ if (capture->vfd)
+ video_unregister_device(capture->vfd);
+
+ kfree(capture->ctx);
+}
projects / mv-sheeva.git / blobdiff