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769 lines
19 KiB
769 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Driver for the NXP SAA7164 PCIe bridge |
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* |
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* Copyright (c) 2010-2015 Steven Toth <[email protected]> |
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*/ |
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|
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#include "saa7164.h" |
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|
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/* Take the encoder configuration from the port struct and |
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* flush it to the hardware. |
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*/ |
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static void saa7164_vbi_configure(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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dprintk(DBGLVL_VBI, "%s()\n", __func__); |
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|
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port->vbi_params.width = port->enc_port->width; |
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port->vbi_params.height = port->enc_port->height; |
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port->vbi_params.is_50hz = |
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(port->enc_port->encodernorm.id & V4L2_STD_625_50) != 0; |
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|
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/* Set up the DIF (enable it) for analog mode by default */ |
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saa7164_api_initialize_dif(port); |
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dprintk(DBGLVL_VBI, "%s() ends\n", __func__); |
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} |
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|
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static int saa7164_vbi_buffers_dealloc(struct saa7164_port *port) |
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{ |
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struct list_head *c, *n, *p, *q, *l, *v; |
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struct saa7164_dev *dev = port->dev; |
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struct saa7164_buffer *buf; |
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struct saa7164_user_buffer *ubuf; |
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|
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/* Remove any allocated buffers */ |
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mutex_lock(&port->dmaqueue_lock); |
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|
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dprintk(DBGLVL_VBI, "%s(port=%d) dmaqueue\n", __func__, port->nr); |
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list_for_each_safe(c, n, &port->dmaqueue.list) { |
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buf = list_entry(c, struct saa7164_buffer, list); |
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list_del(c); |
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saa7164_buffer_dealloc(buf); |
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} |
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|
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dprintk(DBGLVL_VBI, "%s(port=%d) used\n", __func__, port->nr); |
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list_for_each_safe(p, q, &port->list_buf_used.list) { |
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ubuf = list_entry(p, struct saa7164_user_buffer, list); |
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list_del(p); |
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saa7164_buffer_dealloc_user(ubuf); |
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} |
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|
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dprintk(DBGLVL_VBI, "%s(port=%d) free\n", __func__, port->nr); |
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list_for_each_safe(l, v, &port->list_buf_free.list) { |
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ubuf = list_entry(l, struct saa7164_user_buffer, list); |
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list_del(l); |
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saa7164_buffer_dealloc_user(ubuf); |
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} |
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|
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mutex_unlock(&port->dmaqueue_lock); |
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dprintk(DBGLVL_VBI, "%s(port=%d) done\n", __func__, port->nr); |
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|
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return 0; |
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} |
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|
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/* Dynamic buffer switch at vbi start time */ |
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static int saa7164_vbi_buffers_alloc(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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struct saa7164_buffer *buf; |
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struct saa7164_user_buffer *ubuf; |
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struct tmHWStreamParameters *params = &port->hw_streamingparams; |
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int result = -ENODEV, i; |
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int len = 0; |
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|
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dprintk(DBGLVL_VBI, "%s()\n", __func__); |
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|
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/* TODO: NTSC SPECIFIC */ |
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/* Init and establish defaults */ |
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params->samplesperline = 1440; |
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params->numberoflines = 12; |
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params->numberoflines = 18; |
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params->pitch = 1600; |
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params->pitch = 1440; |
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params->numpagetables = 2 + |
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((params->numberoflines * params->pitch) / PAGE_SIZE); |
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params->bitspersample = 8; |
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params->linethreshold = 0; |
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params->pagetablelistvirt = NULL; |
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params->pagetablelistphys = NULL; |
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params->numpagetableentries = port->hwcfg.buffercount; |
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|
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/* Allocate the PCI resources, buffers (hard) */ |
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for (i = 0; i < port->hwcfg.buffercount; i++) { |
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buf = saa7164_buffer_alloc(port, |
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params->numberoflines * |
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params->pitch); |
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|
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if (!buf) { |
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printk(KERN_ERR "%s() failed (errno = %d), unable to allocate buffer\n", |
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__func__, result); |
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result = -ENOMEM; |
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goto failed; |
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} else { |
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|
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mutex_lock(&port->dmaqueue_lock); |
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list_add_tail(&buf->list, &port->dmaqueue.list); |
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mutex_unlock(&port->dmaqueue_lock); |
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|
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} |
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} |
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|
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/* Allocate some kernel buffers for copying |
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* to userpsace. |
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*/ |
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len = params->numberoflines * params->pitch; |
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|
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if (vbi_buffers < 16) |
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vbi_buffers = 16; |
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if (vbi_buffers > 512) |
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vbi_buffers = 512; |
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|
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for (i = 0; i < vbi_buffers; i++) { |
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|
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ubuf = saa7164_buffer_alloc_user(dev, len); |
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if (ubuf) { |
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mutex_lock(&port->dmaqueue_lock); |
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list_add_tail(&ubuf->list, &port->list_buf_free.list); |
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mutex_unlock(&port->dmaqueue_lock); |
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} |
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|
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} |
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|
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result = 0; |
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|
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failed: |
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return result; |
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} |
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|
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|
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static int saa7164_vbi_initialize(struct saa7164_port *port) |
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{ |
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saa7164_vbi_configure(port); |
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return 0; |
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} |
|
|
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/* -- V4L2 --------------------------------------------------------- */ |
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static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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|
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return saa7164_s_std(fh->port->enc_port, id); |
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} |
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|
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static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) |
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{ |
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struct saa7164_encoder_fh *fh = file->private_data; |
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|
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return saa7164_g_std(fh->port->enc_port, id); |
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} |
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|
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static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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|
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return saa7164_g_input(fh->port->enc_port, i); |
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} |
|
|
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static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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|
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return saa7164_s_input(fh->port->enc_port, i); |
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} |
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|
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static int vidioc_g_frequency(struct file *file, void *priv, |
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struct v4l2_frequency *f) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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|
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return saa7164_g_frequency(fh->port->enc_port, f); |
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} |
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|
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static int vidioc_s_frequency(struct file *file, void *priv, |
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const struct v4l2_frequency *f) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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int ret = saa7164_s_frequency(fh->port->enc_port, f); |
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|
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if (ret == 0) |
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saa7164_vbi_initialize(fh->port); |
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return ret; |
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} |
|
|
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static int vidioc_querycap(struct file *file, void *priv, |
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struct v4l2_capability *cap) |
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{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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struct saa7164_port *port = fh->port; |
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struct saa7164_dev *dev = port->dev; |
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|
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strscpy(cap->driver, dev->name, sizeof(cap->driver)); |
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strscpy(cap->card, saa7164_boards[dev->board].name, |
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sizeof(cap->card)); |
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sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci)); |
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cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
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V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE | |
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V4L2_CAP_DEVICE_CAPS; |
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return 0; |
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} |
|
|
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static int saa7164_vbi_stop_port(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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int ret; |
|
|
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP); |
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n", |
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__func__, ret); |
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ret = -EIO; |
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} else { |
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dprintk(DBGLVL_VBI, "%s() Stopped\n", __func__); |
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ret = 0; |
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} |
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|
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return ret; |
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} |
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|
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static int saa7164_vbi_acquire_port(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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int ret; |
|
|
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE); |
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n", |
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__func__, ret); |
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ret = -EIO; |
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} else { |
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dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__); |
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ret = 0; |
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} |
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|
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return ret; |
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} |
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|
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static int saa7164_vbi_pause_port(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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int ret; |
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|
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE); |
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n", |
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__func__, ret); |
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ret = -EIO; |
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} else { |
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dprintk(DBGLVL_VBI, "%s() Paused\n", __func__); |
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ret = 0; |
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} |
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|
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return ret; |
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} |
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|
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/* Firmware is very windows centric, meaning you have to transition |
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* the part through AVStream / KS Windows stages, forwards or backwards. |
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* States are: stopped, acquired (h/w), paused, started. |
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* We have to leave here will all of the soft buffers on the free list, |
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* else the cfg_post() func won't have soft buffers to correctly configure. |
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*/ |
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static int saa7164_vbi_stop_streaming(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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struct saa7164_buffer *buf; |
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struct saa7164_user_buffer *ubuf; |
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struct list_head *c, *n; |
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int ret; |
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dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr); |
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ret = saa7164_vbi_pause_port(port); |
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ret = saa7164_vbi_acquire_port(port); |
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ret = saa7164_vbi_stop_port(port); |
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dprintk(DBGLVL_VBI, "%s(port=%d) Hardware stopped\n", __func__, |
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port->nr); |
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/* Reset the state of any allocated buffer resources */ |
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mutex_lock(&port->dmaqueue_lock); |
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|
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/* Reset the hard and soft buffer state */ |
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list_for_each_safe(c, n, &port->dmaqueue.list) { |
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buf = list_entry(c, struct saa7164_buffer, list); |
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buf->flags = SAA7164_BUFFER_FREE; |
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buf->pos = 0; |
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} |
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list_for_each_safe(c, n, &port->list_buf_used.list) { |
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ubuf = list_entry(c, struct saa7164_user_buffer, list); |
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ubuf->pos = 0; |
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list_move_tail(&ubuf->list, &port->list_buf_free.list); |
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} |
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mutex_unlock(&port->dmaqueue_lock); |
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|
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/* Free any allocated resources */ |
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saa7164_vbi_buffers_dealloc(port); |
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dprintk(DBGLVL_VBI, "%s(port=%d) Released\n", __func__, port->nr); |
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return ret; |
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} |
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static int saa7164_vbi_start_streaming(struct saa7164_port *port) |
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{ |
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struct saa7164_dev *dev = port->dev; |
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int result, ret = 0; |
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dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr); |
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port->done_first_interrupt = 0; |
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|
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/* allocate all of the PCIe DMA buffer resources on the fly, |
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* allowing switching between TS and PS payloads without |
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* requiring a complete driver reload. |
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*/ |
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saa7164_vbi_buffers_alloc(port); |
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|
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/* Configure the encoder with any cache values */ |
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#if 0 |
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saa7164_api_set_encoder(port); |
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saa7164_api_get_encoder(port); |
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#endif |
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|
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/* Place the empty buffers on the hardware */ |
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saa7164_buffer_cfg_port(port); |
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|
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/* Negotiate format */ |
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if (saa7164_api_set_vbi_format(port) != SAA_OK) { |
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printk(KERN_ERR "%s() No supported VBI format\n", __func__); |
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ret = -EIO; |
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goto out; |
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} |
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|
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/* Acquire the hardware */ |
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result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE); |
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n", |
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__func__, result); |
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ret = -EIO; |
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goto out; |
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} else |
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dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__); |
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|
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/* Pause the hardware */ |
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result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE); |
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n", |
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__func__, result); |
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|
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/* Stop the hardware, regardless */ |
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result = saa7164_vbi_stop_port(port); |
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if (result != SAA_OK) { |
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printk(KERN_ERR "%s() pause/forced stop transition failed, res = 0x%x\n", |
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__func__, result); |
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} |
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|
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ret = -EIO; |
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goto out; |
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} else |
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dprintk(DBGLVL_VBI, "%s() Paused\n", __func__); |
|
|
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/* Start the hardware */ |
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result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN); |
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { |
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printk(KERN_ERR "%s() run transition failed, result = 0x%x\n", |
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__func__, result); |
|
|
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/* Stop the hardware, regardless */ |
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result = saa7164_vbi_acquire_port(port); |
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result = saa7164_vbi_stop_port(port); |
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if (result != SAA_OK) { |
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printk(KERN_ERR "%s() run/forced stop transition failed, res = 0x%x\n", |
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__func__, result); |
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} |
|
|
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ret = -EIO; |
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} else |
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dprintk(DBGLVL_VBI, "%s() Running\n", __func__); |
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|
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out: |
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return ret; |
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} |
|
|
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static int saa7164_vbi_fmt(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
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/* ntsc */ |
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f->fmt.vbi.samples_per_line = 1440; |
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f->fmt.vbi.sampling_rate = 27000000; |
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f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; |
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f->fmt.vbi.offset = 0; |
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f->fmt.vbi.flags = 0; |
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f->fmt.vbi.start[0] = 10; |
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f->fmt.vbi.count[0] = 18; |
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f->fmt.vbi.start[1] = 263 + 10 + 1; |
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f->fmt.vbi.count[1] = 18; |
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memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); |
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return 0; |
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} |
|
|
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static int fops_open(struct file *file) |
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{ |
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struct saa7164_dev *dev; |
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struct saa7164_port *port; |
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struct saa7164_vbi_fh *fh; |
|
|
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port = (struct saa7164_port *)video_get_drvdata(video_devdata(file)); |
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if (!port) |
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return -ENODEV; |
|
|
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dev = port->dev; |
|
|
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dprintk(DBGLVL_VBI, "%s()\n", __func__); |
|
|
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/* allocate + initialize per filehandle data */ |
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fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
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if (NULL == fh) |
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return -ENOMEM; |
|
|
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fh->port = port; |
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v4l2_fh_init(&fh->fh, video_devdata(file)); |
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v4l2_fh_add(&fh->fh); |
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file->private_data = fh; |
|
|
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return 0; |
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} |
|
|
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static int fops_release(struct file *file) |
|
{ |
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struct saa7164_vbi_fh *fh = file->private_data; |
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struct saa7164_port *port = fh->port; |
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struct saa7164_dev *dev = port->dev; |
|
|
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dprintk(DBGLVL_VBI, "%s()\n", __func__); |
|
|
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/* Shut device down on last close */ |
|
if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) { |
|
if (atomic_dec_return(&port->v4l_reader_count) == 0) { |
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/* stop vbi capture then cancel buffers */ |
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saa7164_vbi_stop_streaming(port); |
|
} |
|
} |
|
|
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v4l2_fh_del(&fh->fh); |
|
v4l2_fh_exit(&fh->fh); |
|
kfree(fh); |
|
|
|
return 0; |
|
} |
|
|
|
static struct |
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saa7164_user_buffer *saa7164_vbi_next_buf(struct saa7164_port *port) |
|
{ |
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struct saa7164_user_buffer *ubuf = NULL; |
|
struct saa7164_dev *dev = port->dev; |
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u32 crc; |
|
|
|
mutex_lock(&port->dmaqueue_lock); |
|
if (!list_empty(&port->list_buf_used.list)) { |
|
ubuf = list_first_entry(&port->list_buf_used.list, |
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struct saa7164_user_buffer, list); |
|
|
|
if (crc_checking) { |
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crc = crc32(0, ubuf->data, ubuf->actual_size); |
|
if (crc != ubuf->crc) { |
|
printk(KERN_ERR "%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n", |
|
__func__, |
|
ubuf, ubuf->crc, crc); |
|
} |
|
} |
|
|
|
} |
|
mutex_unlock(&port->dmaqueue_lock); |
|
|
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dprintk(DBGLVL_VBI, "%s() returns %p\n", __func__, ubuf); |
|
|
|
return ubuf; |
|
} |
|
|
|
static ssize_t fops_read(struct file *file, char __user *buffer, |
|
size_t count, loff_t *pos) |
|
{ |
|
struct saa7164_vbi_fh *fh = file->private_data; |
|
struct saa7164_port *port = fh->port; |
|
struct saa7164_user_buffer *ubuf = NULL; |
|
struct saa7164_dev *dev = port->dev; |
|
int ret = 0; |
|
int rem, cnt; |
|
u8 *p; |
|
|
|
port->last_read_msecs_diff = port->last_read_msecs; |
|
port->last_read_msecs = jiffies_to_msecs(jiffies); |
|
port->last_read_msecs_diff = port->last_read_msecs - |
|
port->last_read_msecs_diff; |
|
|
|
saa7164_histogram_update(&port->read_interval, |
|
port->last_read_msecs_diff); |
|
|
|
if (*pos) { |
|
printk(KERN_ERR "%s() ESPIPE\n", __func__); |
|
return -ESPIPE; |
|
} |
|
|
|
if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) { |
|
if (atomic_inc_return(&port->v4l_reader_count) == 1) { |
|
|
|
if (saa7164_vbi_initialize(port) < 0) { |
|
printk(KERN_ERR "%s() EINVAL\n", __func__); |
|
return -EINVAL; |
|
} |
|
|
|
saa7164_vbi_start_streaming(port); |
|
msleep(200); |
|
} |
|
} |
|
|
|
/* blocking wait for buffer */ |
|
if ((file->f_flags & O_NONBLOCK) == 0) { |
|
if (wait_event_interruptible(port->wait_read, |
|
saa7164_vbi_next_buf(port))) { |
|
printk(KERN_ERR "%s() ERESTARTSYS\n", __func__); |
|
return -ERESTARTSYS; |
|
} |
|
} |
|
|
|
/* Pull the first buffer from the used list */ |
|
ubuf = saa7164_vbi_next_buf(port); |
|
|
|
while ((count > 0) && ubuf) { |
|
|
|
/* set remaining bytes to copy */ |
|
rem = ubuf->actual_size - ubuf->pos; |
|
cnt = rem > count ? count : rem; |
|
|
|
p = ubuf->data + ubuf->pos; |
|
|
|
dprintk(DBGLVL_VBI, |
|
"%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n", |
|
__func__, (int)count, cnt, rem, ubuf, ubuf->pos); |
|
|
|
if (copy_to_user(buffer, p, cnt)) { |
|
printk(KERN_ERR "%s() copy_to_user failed\n", __func__); |
|
if (!ret) { |
|
printk(KERN_ERR "%s() EFAULT\n", __func__); |
|
ret = -EFAULT; |
|
} |
|
goto err; |
|
} |
|
|
|
ubuf->pos += cnt; |
|
count -= cnt; |
|
buffer += cnt; |
|
ret += cnt; |
|
|
|
if (ubuf->pos > ubuf->actual_size) |
|
printk(KERN_ERR "read() pos > actual, huh?\n"); |
|
|
|
if (ubuf->pos == ubuf->actual_size) { |
|
|
|
/* finished with current buffer, take next buffer */ |
|
|
|
/* Requeue the buffer on the free list */ |
|
ubuf->pos = 0; |
|
|
|
mutex_lock(&port->dmaqueue_lock); |
|
list_move_tail(&ubuf->list, &port->list_buf_free.list); |
|
mutex_unlock(&port->dmaqueue_lock); |
|
|
|
/* Dequeue next */ |
|
if ((file->f_flags & O_NONBLOCK) == 0) { |
|
if (wait_event_interruptible(port->wait_read, |
|
saa7164_vbi_next_buf(port))) { |
|
break; |
|
} |
|
} |
|
ubuf = saa7164_vbi_next_buf(port); |
|
} |
|
} |
|
err: |
|
if (!ret && !ubuf) { |
|
printk(KERN_ERR "%s() EAGAIN\n", __func__); |
|
ret = -EAGAIN; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static __poll_t fops_poll(struct file *file, poll_table *wait) |
|
{ |
|
struct saa7164_vbi_fh *fh = (struct saa7164_vbi_fh *)file->private_data; |
|
struct saa7164_port *port = fh->port; |
|
__poll_t mask = 0; |
|
|
|
port->last_poll_msecs_diff = port->last_poll_msecs; |
|
port->last_poll_msecs = jiffies_to_msecs(jiffies); |
|
port->last_poll_msecs_diff = port->last_poll_msecs - |
|
port->last_poll_msecs_diff; |
|
|
|
saa7164_histogram_update(&port->poll_interval, |
|
port->last_poll_msecs_diff); |
|
|
|
if (!video_is_registered(port->v4l_device)) |
|
return EPOLLERR; |
|
|
|
if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) { |
|
if (atomic_inc_return(&port->v4l_reader_count) == 1) { |
|
if (saa7164_vbi_initialize(port) < 0) |
|
return EPOLLERR; |
|
saa7164_vbi_start_streaming(port); |
|
msleep(200); |
|
} |
|
} |
|
|
|
/* blocking wait for buffer */ |
|
if ((file->f_flags & O_NONBLOCK) == 0) { |
|
if (wait_event_interruptible(port->wait_read, |
|
saa7164_vbi_next_buf(port))) { |
|
return EPOLLERR; |
|
} |
|
} |
|
|
|
/* Pull the first buffer from the used list */ |
|
if (!list_empty(&port->list_buf_used.list)) |
|
mask |= EPOLLIN | EPOLLRDNORM; |
|
|
|
return mask; |
|
} |
|
static const struct v4l2_file_operations vbi_fops = { |
|
.owner = THIS_MODULE, |
|
.open = fops_open, |
|
.release = fops_release, |
|
.read = fops_read, |
|
.poll = fops_poll, |
|
.unlocked_ioctl = video_ioctl2, |
|
}; |
|
|
|
static const struct v4l2_ioctl_ops vbi_ioctl_ops = { |
|
.vidioc_s_std = vidioc_s_std, |
|
.vidioc_g_std = vidioc_g_std, |
|
.vidioc_enum_input = saa7164_enum_input, |
|
.vidioc_g_input = vidioc_g_input, |
|
.vidioc_s_input = vidioc_s_input, |
|
.vidioc_g_tuner = saa7164_g_tuner, |
|
.vidioc_s_tuner = saa7164_s_tuner, |
|
.vidioc_g_frequency = vidioc_g_frequency, |
|
.vidioc_s_frequency = vidioc_s_frequency, |
|
.vidioc_querycap = vidioc_querycap, |
|
.vidioc_g_fmt_vbi_cap = saa7164_vbi_fmt, |
|
.vidioc_try_fmt_vbi_cap = saa7164_vbi_fmt, |
|
.vidioc_s_fmt_vbi_cap = saa7164_vbi_fmt, |
|
}; |
|
|
|
static struct video_device saa7164_vbi_template = { |
|
.name = "saa7164", |
|
.fops = &vbi_fops, |
|
.ioctl_ops = &vbi_ioctl_ops, |
|
.minor = -1, |
|
.tvnorms = SAA7164_NORMS, |
|
.device_caps = V4L2_CAP_VBI_CAPTURE | V4L2_CAP_READWRITE | |
|
V4L2_CAP_TUNER, |
|
}; |
|
|
|
static struct video_device *saa7164_vbi_alloc( |
|
struct saa7164_port *port, |
|
struct pci_dev *pci, |
|
struct video_device *template, |
|
char *type) |
|
{ |
|
struct video_device *vfd; |
|
struct saa7164_dev *dev = port->dev; |
|
|
|
dprintk(DBGLVL_VBI, "%s()\n", __func__); |
|
|
|
vfd = video_device_alloc(); |
|
if (NULL == vfd) |
|
return NULL; |
|
|
|
*vfd = *template; |
|
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, |
|
type, saa7164_boards[dev->board].name); |
|
|
|
vfd->v4l2_dev = &dev->v4l2_dev; |
|
vfd->release = video_device_release; |
|
return vfd; |
|
} |
|
|
|
int saa7164_vbi_register(struct saa7164_port *port) |
|
{ |
|
struct saa7164_dev *dev = port->dev; |
|
int result = -ENODEV; |
|
|
|
dprintk(DBGLVL_VBI, "%s()\n", __func__); |
|
|
|
BUG_ON(port->type != SAA7164_MPEG_VBI); |
|
|
|
/* Sanity check that the PCI configuration space is active */ |
|
if (port->hwcfg.BARLocation == 0) { |
|
printk(KERN_ERR "%s() failed (errno = %d), NO PCI configuration\n", |
|
__func__, result); |
|
result = -ENOMEM; |
|
goto failed; |
|
} |
|
|
|
/* Establish VBI defaults here */ |
|
|
|
/* Allocate and register the video device node */ |
|
port->v4l_device = saa7164_vbi_alloc(port, |
|
dev->pci, &saa7164_vbi_template, "vbi"); |
|
|
|
if (!port->v4l_device) { |
|
printk(KERN_INFO "%s: can't allocate vbi device\n", |
|
dev->name); |
|
result = -ENOMEM; |
|
goto failed; |
|
} |
|
|
|
port->enc_port = &dev->ports[port->nr - 2]; |
|
video_set_drvdata(port->v4l_device, port); |
|
result = video_register_device(port->v4l_device, |
|
VFL_TYPE_VBI, -1); |
|
if (result < 0) { |
|
printk(KERN_INFO "%s: can't register vbi device\n", |
|
dev->name); |
|
/* TODO: We're going to leak here if we don't dealloc |
|
The buffers above. The unreg function can't deal wit it. |
|
*/ |
|
goto failed; |
|
} |
|
|
|
printk(KERN_INFO "%s: registered device vbi%d [vbi]\n", |
|
dev->name, port->v4l_device->num); |
|
|
|
/* Configure the hardware defaults */ |
|
|
|
result = 0; |
|
failed: |
|
return result; |
|
} |
|
|
|
void saa7164_vbi_unregister(struct saa7164_port *port) |
|
{ |
|
struct saa7164_dev *dev = port->dev; |
|
|
|
dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr); |
|
|
|
BUG_ON(port->type != SAA7164_MPEG_VBI); |
|
|
|
if (port->v4l_device) { |
|
if (port->v4l_device->minor != -1) |
|
video_unregister_device(port->v4l_device); |
|
else |
|
video_device_release(port->v4l_device); |
|
|
|
port->v4l_device = NULL; |
|
} |
|
|
|
}
|
|
|