V4L/DVB (12730): Add conexant cx25821 driver
GIT_BRANCH=devel
GIT_AUTHOR_DATE=1252851239
GIT_AUTHOR_NAME=Palash Bandyopadhyay
GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com
Add conexant cx25821 driver release v106 of the Athena driver.
Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/staging/cx25821/cx25821-video3.c b/drivers/staging/cx25821/cx25821-video3.c
new file mode 100644
index 0000000..3dcecd2
--- /dev/null
+++ b/drivers/staging/cx25821/cx25821-video3.c
@@ -0,0 +1,458 @@
+/*
+ * Driver for the Conexant CX25821 PCIe bridge
+ *
+ * Copyright (C) 2009 Conexant Systems Inc.
+ * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
+ * Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "cx25821-video.h"
+
+
+static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
+{
+ struct cx25821_buffer *buf = container_of(vb, struct cx25821_buffer, vb);
+ struct cx25821_buffer *prev;
+ struct cx25821_fh *fh = vq->priv_data;
+ struct cx25821_dev *dev = fh->dev;
+ struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH03];
+
+
+ /* add jump to stopper */
+ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
+ buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
+ buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
+
+ dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
+
+ if (!list_empty(&q->queued)) {
+ list_add_tail(&buf->vb.queue, &q->queued);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf, buf->vb.i);
+
+ } else if (list_empty(&q->active)) {
+ list_add_tail(&buf->vb.queue, &q->active);
+ cx25821_start_video_dma(dev, q, buf, &dev->sram_channels[SRAM_CH03]);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ buf->count = q->count++;
+ mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+ dprintk(2, "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
+ buf, buf->vb. i, buf->count, q->count);
+ } else {
+ prev = list_entry(q->active.prev, struct cx25821_buffer, vb.queue);
+ if (prev->vb.width == buf->vb.width &&
+ prev->vb.height == buf->vb.height &&
+ prev->fmt == buf->fmt) {
+ list_add_tail(&buf->vb.queue, &q->active);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ buf->count = q->count++;
+ prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+
+ /* 64 bit bits 63-32 */
+ prev->risc.jmp[2] = cpu_to_le32(0);
+ dprintk(2, "[%p/%d] buffer_queue - append to active, buf->count=%d\n", buf, buf->vb.i, buf->count);
+
+ } else {
+ list_add_tail(&buf->vb.queue, &q->queued);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf, buf->vb.i);
+ }
+ }
+
+ if (list_empty(&q->active))
+ {
+ dprintk(2, "active queue empty!\n");
+ }
+}
+
+
+static struct videobuf_queue_ops cx25821_video_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
+
+
+static int video_open(struct file *file)
+{
+ int minor = video_devdata(file)->minor;
+ struct cx25821_dev *h, *dev = NULL;
+ struct cx25821_fh *fh;
+ struct list_head *list;
+ enum v4l2_buf_type type = 0;
+ u32 pix_format;
+
+ lock_kernel();
+ list_for_each(list, &cx25821_devlist)
+ {
+ h = list_entry(list, struct cx25821_dev, devlist);
+
+ if (h->video_dev[SRAM_CH03] && h->video_dev[SRAM_CH03]->minor == minor) {
+ dev = h;
+ type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ }
+ }
+
+ if (NULL == dev) {
+ unlock_kernel();
+ return -ENODEV;
+ }
+
+ printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]);
+
+ /* allocate + initialize per filehandle data */
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh) {
+ unlock_kernel();
+ return -ENOMEM;
+ }
+ file->private_data = fh;
+ fh->dev = dev;
+ fh->type = type;
+ fh->width = 720;
+
+ if(dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
+ fh->height = 576;
+ else
+ fh->height = 480;
+
+ dev->channel_opened = SRAM_CH03;
+ pix_format = (dev->pixel_formats[dev->channel_opened] == PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
+ fh->fmt = format_by_fourcc(pix_format);
+
+ v4l2_prio_open(&dev->prio,&fh->prio);
+
+ videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
+ &dev->pci->dev, &dev->slock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_INTERLACED,
+ sizeof(struct cx25821_buffer),
+ fh);
+
+ dprintk(1, "post videobuf_queue_init()\n");
+ unlock_kernel();
+
+ return 0;
+}
+
+static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
+{
+ struct cx25821_fh *fh = file->private_data;
+
+ switch (fh->type)
+ {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (res_locked(fh->dev, RESOURCE_VIDEO3))
+ return -EBUSY;
+
+ return videobuf_read_one(&fh->vidq, data, count, ppos, file->f_flags & O_NONBLOCK);
+
+ default:
+ BUG();
+ return 0;
+ }
+}
+
+static unsigned int video_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct cx25821_fh *fh = file->private_data;
+ struct cx25821_buffer *buf;
+
+ if (res_check(fh, RESOURCE_VIDEO3)) {
+ /* streaming capture */
+ if (list_empty(&fh->vidq.stream))
+ return POLLERR;
+ buf = list_entry(fh->vidq.stream.next,
+ struct cx25821_buffer, vb.stream);
+ } else {
+ /* read() capture */
+ buf = (struct cx25821_buffer *)fh->vidq.read_buf;
+ if (NULL == buf)
+ return POLLERR;
+ }
+
+ poll_wait(file, &buf->vb.done, wait);
+ if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR)
+ {
+ if( buf->vb.state == VIDEOBUF_DONE )
+ {
+ struct cx25821_dev *dev = fh->dev;
+
+ if( dev && dev->use_cif_resolution[SRAM_CH03] )
+ {
+ u8 cam_id = *((char*)buf->vb.baddr+3);
+ memcpy((char*)buf->vb.baddr, (char*)buf->vb.baddr + (fh->width * 2), (fh->width * 2));
+ *((char*)buf->vb.baddr+3) = cam_id;
+ }
+ }
+
+ return POLLIN|POLLRDNORM;
+ }
+
+ return 0;
+}
+
+
+static int video_release(struct file *file)
+{
+ struct cx25821_fh *fh = file->private_data;
+ struct cx25821_dev *dev = fh->dev;
+
+ //stop the risc engine and fifo
+ cx_write(channel3->dma_ctl, 0); /* FIFO and RISC disable */
+
+ /* stop video capture */
+ if (res_check(fh, RESOURCE_VIDEO3)) {
+ videobuf_queue_cancel(&fh->vidq);
+ res_free(dev, fh, RESOURCE_VIDEO3);
+ }
+
+ if (fh->vidq.read_buf) {
+ buffer_release(&fh->vidq, fh->vidq.read_buf);
+ kfree(fh->vidq.read_buf);
+ }
+
+ videobuf_mmap_free(&fh->vidq);
+
+ v4l2_prio_close(&dev->prio,&fh->prio);
+ file->private_data = NULL;
+ kfree(fh);
+
+ return 0;
+}
+
+
+static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ struct cx25821_fh *fh = priv;
+ struct cx25821_dev *dev = fh->dev;
+
+ if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
+ {
+ return -EINVAL;
+ }
+
+ if (unlikely(i != fh->type))
+ {
+ return -EINVAL;
+ }
+
+ if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO3))))
+ {
+ return -EBUSY;
+ }
+
+ return videobuf_streamon(get_queue(fh));
+}
+
+static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ struct cx25821_fh *fh = priv;
+ struct cx25821_dev *dev = fh->dev;
+ int err, res;
+
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (i != fh->type)
+ return -EINVAL;
+
+ res = get_resource(fh, RESOURCE_VIDEO3);
+ err = videobuf_streamoff(get_queue(fh));
+ if (err < 0)
+ return err;
+ res_free(dev, fh, res);
+ return 0;
+}
+
+
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct cx25821_fh *fh = priv;
+ struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+ int err;
+ int pix_format = 0;
+
+ if (fh)
+ {
+ err = v4l2_prio_check(&dev->prio, &fh->prio);
+ if (0 != err)
+ return err;
+ }
+
+ dprintk(2, "%s()\n", __func__);
+ err = vidioc_try_fmt_vid_cap(file, priv, f);
+
+ if (0 != err)
+ return err;
+
+ fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+ fh->vidq.field = f->fmt.pix.field;
+
+ // check if width and height is valid based on set standard
+ if (is_valid_width(f->fmt.pix.width, dev->tvnorm))
+ {
+ fh->width = f->fmt.pix.width;
+ }
+
+ if (is_valid_height(f->fmt.pix.height, dev->tvnorm))
+ {
+ fh->height = f->fmt.pix.height;
+ }
+
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
+ pix_format = PIXEL_FRMT_411;
+ else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
+ pix_format = PIXEL_FRMT_422;
+ else
+ return -EINVAL;
+
+ cx25821_set_pixel_format( dev, SRAM_CH03, pix_format );
+
+ // check if cif resolution
+ if (fh->width == 320 || fh->width == 352)
+ {
+ dev->use_cif_resolution[SRAM_CH03] = 1;
+ }else
+ {
+ dev->use_cif_resolution[SRAM_CH03] = 0;
+ }
+ dev->cif_width[SRAM_CH03] = fh->width;
+ medusa_set_resolution( dev, fh->width, SRAM_CH03 );
+
+ dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width, fh->height, fh->vidq.field);
+ cx25821_call_all(dev, video, s_fmt, f);
+
+ return 0;
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ int ret_val = 0;
+ struct cx25821_fh *fh = priv;
+ struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+
+ ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
+
+ p->sequence = dev->vidq[SRAM_CH03].count;
+
+ return ret_val;
+}
+
+static int vidioc_log_status (struct file *file, void *priv)
+{
+ struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+ char name[32 + 2];
+
+ struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH03];
+ u32 tmp = 0;
+
+ snprintf(name, sizeof(name), "%s/2", dev->name);
+ printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n",
+ dev->name);
+ cx25821_call_all(dev, core, log_status);
+
+ tmp = cx_read(sram_ch->dma_ctl);
+ printk(KERN_INFO "Video input 3 is %s\n", (tmp & 0x11)?"streaming" : "stopped");
+ printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n",
+ dev->name);
+ return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctl)
+{
+ struct cx25821_fh *fh = priv;
+ struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
+ int err;
+
+ if (fh) {
+ err = v4l2_prio_check(&dev->prio, &fh->prio);
+ if (0 != err)
+ return err;
+ }
+
+ return cx25821_set_control(dev, ctl, SRAM_CH03);
+}
+
+// exported stuff
+static const struct v4l2_file_operations video_fops = {
+ .owner = THIS_MODULE,
+ .open = video_open,
+ .release = video_release,
+ .read = video_read,
+ .poll = video_poll,
+ .mmap = video_mmap,
+ .ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+#ifdef TUNER_FLAG
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_querystd = vidioc_querystd,
+#endif
+ .vidioc_cropcap = vidioc_cropcap,
+ .vidioc_s_crop = vidioc_s_crop,
+ .vidioc_g_crop = vidioc_g_crop,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+ .vidioc_log_status = vidioc_log_status,
+ .vidioc_g_priority = vidioc_g_priority,
+ .vidioc_s_priority = vidioc_s_priority,
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ .vidiocgmbuf = vidiocgmbuf,
+#endif
+#ifdef TUNER_FLAG
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+#endif
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_register = vidioc_g_register,
+ .vidioc_s_register = vidioc_s_register,
+#endif
+};
+
+struct video_device cx25821_video_template3 = {
+ .name = "cx25821-video",
+ .fops = &video_fops,
+ .minor = -1,
+ .ioctl_ops = &video_ioctl_ops,
+ .tvnorms = CX25821_NORMS,
+ .current_norm = V4L2_STD_NTSC_M,
+};
+
+
+