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kernel-fxtec-pro1x/drivers/media/video/cx88/cx88-video.c
Devin Heitmueller 06f837cadb V4L/DVB (11784): cx88: Fix race condition between cx8800 startup and hald 
A power management fix to properly put the xc5000 into low power mode
revealed a race condition where hald could detect the creation of the device
file and connect to the device while the initial device configuration is
still in progress.

Lock the core structure so that video_release cannot be called and put the
tuner to sleep in the middle of the initial call to cx88_set_tvnorm() in
cx8800_initdev()

Thanks to Michael Krufky for discovering the issue and providing an
environment to test in.

Cc: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16 19:14:13 -03:00

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/*
*
* device driver for Conexant 2388x based TV cards
* video4linux video interface
*
* (c) 2003-04 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
*
* (c) 2005-2006 Mauro Carvalho Chehab <mchehab@infradead.org>
* - Multituner support
* - video_ioctl2 conversion
* - PAL/M fixes
*
* 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 <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <asm/div64.h>
#include "cx88.h"
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------------ */
static unsigned int video_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr, int, NULL, 0444);
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr,"video device numbers");
MODULE_PARM_DESC(vbi_nr,"vbi device numbers");
MODULE_PARM_DESC(radio_nr,"radio device numbers");
static unsigned int video_debug;
module_param(video_debug,int,0644);
MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
static unsigned int irq_debug;
module_param(irq_debug,int,0644);
MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
static unsigned int vid_limit = 16;
module_param(vid_limit,int,0644);
MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
#define dprintk(level,fmt, arg...) if (video_debug >= level) \
printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
/* ------------------------------------------------------------------ */
static LIST_HEAD(cx8800_devlist);
/* ------------------------------------------------------------------- */
/* static data */
static struct cx8800_fmt formats[] = {
{
.name = "8 bpp, gray",
.fourcc = V4L2_PIX_FMT_GREY,
.cxformat = ColorFormatY8,
.depth = 8,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "15 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_RGB555,
.cxformat = ColorFormatRGB15,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "15 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB555X,
.cxformat = ColorFormatRGB15 | ColorFormatBSWAP,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "16 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_RGB565,
.cxformat = ColorFormatRGB16,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "16 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB565X,
.cxformat = ColorFormatRGB16 | ColorFormatBSWAP,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "24 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_BGR24,
.cxformat = ColorFormatRGB24,
.depth = 24,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "32 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_BGR32,
.cxformat = ColorFormatRGB32,
.depth = 32,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "32 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB32,
.cxformat = ColorFormatRGB32 | ColorFormatBSWAP | ColorFormatWSWAP,
.depth = 32,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "4:2:2, packed, YUYV",
.fourcc = V4L2_PIX_FMT_YUYV,
.cxformat = ColorFormatYUY2,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},{
.name = "4:2:2, packed, UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.cxformat = ColorFormatYUY2 | ColorFormatBSWAP,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},
};
static struct cx8800_fmt* format_by_fourcc(unsigned int fourcc)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(formats); i++)
if (formats[i].fourcc == fourcc)
return formats+i;
return NULL;
}
/* ------------------------------------------------------------------- */
static const struct v4l2_queryctrl no_ctl = {
.name = "42",
.flags = V4L2_CTRL_FLAG_DISABLED,
};
static struct cx88_ctrl cx8800_ctls[] = {
/* --- video --- */
{
.v = {
.id = V4L2_CID_BRIGHTNESS,
.name = "Brightness",
.minimum = 0x00,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 128,
.reg = MO_CONTR_BRIGHT,
.mask = 0x00ff,
.shift = 0,
},{
.v = {
.id = V4L2_CID_CONTRAST,
.name = "Contrast",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x3f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 0,
.reg = MO_CONTR_BRIGHT,
.mask = 0xff00,
.shift = 8,
},{
.v = {
.id = V4L2_CID_HUE,
.name = "Hue",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 128,
.reg = MO_HUE,
.mask = 0x00ff,
.shift = 0,
},{
/* strictly, this only describes only U saturation.
* V saturation is handled specially through code.
*/
.v = {
.id = V4L2_CID_SATURATION,
.name = "Saturation",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 0,
.reg = MO_UV_SATURATION,
.mask = 0x00ff,
.shift = 0,
},{
.v = {
.id = V4L2_CID_CHROMA_AGC,
.name = "Chroma AGC",
.minimum = 0,
.maximum = 1,
.default_value = 0x1,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},
.reg = MO_INPUT_FORMAT,
.mask = 1 << 10,
.shift = 10,
}, {
.v = {
.id = V4L2_CID_COLOR_KILLER,
.name = "Color killer",
.minimum = 0,
.maximum = 1,
.default_value = 0x1,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},
.reg = MO_INPUT_FORMAT,
.mask = 1 << 9,
.shift = 9,
}, {
/* --- audio --- */
.v = {
.id = V4L2_CID_AUDIO_MUTE,
.name = "Mute",
.minimum = 0,
.maximum = 1,
.default_value = 1,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},
.reg = AUD_VOL_CTL,
.sreg = SHADOW_AUD_VOL_CTL,
.mask = (1 << 6),
.shift = 6,
},{
.v = {
.id = V4L2_CID_AUDIO_VOLUME,
.name = "Volume",
.minimum = 0,
.maximum = 0x3f,
.step = 1,
.default_value = 0x3f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.reg = AUD_VOL_CTL,
.sreg = SHADOW_AUD_VOL_CTL,
.mask = 0x3f,
.shift = 0,
},{
.v = {
.id = V4L2_CID_AUDIO_BALANCE,
.name = "Balance",
.minimum = 0,
.maximum = 0x7f,
.step = 1,
.default_value = 0x40,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.reg = AUD_BAL_CTL,
.sreg = SHADOW_AUD_BAL_CTL,
.mask = 0x7f,
.shift = 0,
}
};
static const int CX8800_CTLS = ARRAY_SIZE(cx8800_ctls);
/* Must be sorted from low to high control ID! */
const u32 cx88_user_ctrls[] = {
V4L2_CID_USER_CLASS,
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_AUDIO_VOLUME,
V4L2_CID_AUDIO_BALANCE,
V4L2_CID_AUDIO_MUTE,
V4L2_CID_CHROMA_AGC,
V4L2_CID_COLOR_KILLER,
0
};
EXPORT_SYMBOL(cx88_user_ctrls);
static const u32 *ctrl_classes[] = {
cx88_user_ctrls,
NULL
};
int cx8800_ctrl_query(struct cx88_core *core, struct v4l2_queryctrl *qctrl)
{
int i;
if (qctrl->id < V4L2_CID_BASE ||
qctrl->id >= V4L2_CID_LASTP1)
return -EINVAL;
for (i = 0; i < CX8800_CTLS; i++)
if (cx8800_ctls[i].v.id == qctrl->id)
break;
if (i == CX8800_CTLS) {
*qctrl = no_ctl;
return 0;
}
*qctrl = cx8800_ctls[i].v;
/* Report chroma AGC as inactive when SECAM is selected */
if (cx8800_ctls[i].v.id == V4L2_CID_CHROMA_AGC &&
core->tvnorm & V4L2_STD_SECAM)
qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
return 0;
}
EXPORT_SYMBOL(cx8800_ctrl_query);
/* ------------------------------------------------------------------- */
/* resource management */
static int res_get(struct cx8800_dev *dev, struct cx8800_fh *fh, unsigned int bit)
{
struct cx88_core *core = dev->core;
if (fh->resources & bit)
/* have it already allocated */
return 1;
/* is it free? */
mutex_lock(&core->lock);
if (dev->resources & bit) {
/* no, someone else uses it */
mutex_unlock(&core->lock);
return 0;
}
/* it's free, grab it */
fh->resources |= bit;
dev->resources |= bit;
dprintk(1,"res: get %d\n",bit);
mutex_unlock(&core->lock);
return 1;
}
static
int res_check(struct cx8800_fh *fh, unsigned int bit)
{
return (fh->resources & bit);
}
static
int res_locked(struct cx8800_dev *dev, unsigned int bit)
{
return (dev->resources & bit);
}
static
void res_free(struct cx8800_dev *dev, struct cx8800_fh *fh, unsigned int bits)
{
struct cx88_core *core = dev->core;
BUG_ON((fh->resources & bits) != bits);
mutex_lock(&core->lock);
fh->resources &= ~bits;
dev->resources &= ~bits;
dprintk(1,"res: put %d\n",bits);
mutex_unlock(&core->lock);
}
/* ------------------------------------------------------------------ */
int cx88_video_mux(struct cx88_core *core, unsigned int input)
{
/* struct cx88_core *core = dev->core; */
dprintk(1,"video_mux: %d [vmux=%d,gpio=0x%x,0x%x,0x%x,0x%x]\n",
input, INPUT(input).vmux,
INPUT(input).gpio0,INPUT(input).gpio1,
INPUT(input).gpio2,INPUT(input).gpio3);
core->input = input;
cx_andor(MO_INPUT_FORMAT, 0x03 << 14, INPUT(input).vmux << 14);
cx_write(MO_GP3_IO, INPUT(input).gpio3);
cx_write(MO_GP0_IO, INPUT(input).gpio0);
cx_write(MO_GP1_IO, INPUT(input).gpio1);
cx_write(MO_GP2_IO, INPUT(input).gpio2);
switch (INPUT(input).type) {
case CX88_VMUX_SVIDEO:
cx_set(MO_AFECFG_IO, 0x00000001);
cx_set(MO_INPUT_FORMAT, 0x00010010);
cx_set(MO_FILTER_EVEN, 0x00002020);
cx_set(MO_FILTER_ODD, 0x00002020);
break;
default:
cx_clear(MO_AFECFG_IO, 0x00000001);
cx_clear(MO_INPUT_FORMAT, 0x00010010);
cx_clear(MO_FILTER_EVEN, 0x00002020);
cx_clear(MO_FILTER_ODD, 0x00002020);
break;
}
/* if there are audioroutes defined, we have an external
ADC to deal with audio */
if (INPUT(input).audioroute) {
/* The wm8775 module has the "2" route hardwired into
the initialization. Some boards may use different
routes for different inputs. HVR-1300 surely does */
if (core->board.audio_chip &&
core->board.audio_chip == V4L2_IDENT_WM8775) {
call_all(core, audio, s_routing,
INPUT(input).audioroute, 0, 0);
}
/* cx2388's C-ADC is connected to the tuner only.
When used with S-Video, that ADC is busy dealing with
chroma, so an external must be used for baseband audio */
if (INPUT(input).type != CX88_VMUX_TELEVISION ) {
/* "I2S ADC mode" */
core->tvaudio = WW_I2SADC;
cx88_set_tvaudio(core);
} else {
/* Normal mode */
cx_write(AUD_I2SCNTL, 0x0);
cx_clear(AUD_CTL, EN_I2SIN_ENABLE);
}
}
return 0;
}
EXPORT_SYMBOL(cx88_video_mux);
/* ------------------------------------------------------------------ */
static int start_video_dma(struct cx8800_dev *dev,
struct cx88_dmaqueue *q,
struct cx88_buffer *buf)
{
struct cx88_core *core = dev->core;
/* setup fifo + format */
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH21],
buf->bpl, buf->risc.dma);
cx88_set_scale(core, buf->vb.width, buf->vb.height, buf->vb.field);
cx_write(MO_COLOR_CTRL, buf->fmt->cxformat | ColorFormatGamma);
/* reset counter */
cx_write(MO_VIDY_GPCNTRL,GP_COUNT_CONTROL_RESET);
q->count = 1;
/* enable irqs */
cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_VIDINT);
/* Enables corresponding bits at PCI_INT_STAT:
bits 0 to 4: video, audio, transport stream, VIP, Host
bit 7: timer
bits 8 and 9: DMA complete for: SRC, DST
bits 10 and 11: BERR signal asserted for RISC: RD, WR
bits 12 to 15: BERR signal asserted for: BRDG, SRC, DST, IPB
*/
cx_set(MO_VID_INTMSK, 0x0f0011);
/* enable capture */
cx_set(VID_CAPTURE_CONTROL,0x06);
/* start dma */
cx_set(MO_DEV_CNTRL2, (1<<5));
cx_set(MO_VID_DMACNTRL, 0x11); /* Planar Y and packed FIFO and RISC enable */
return 0;
}
#ifdef CONFIG_PM
static int stop_video_dma(struct cx8800_dev *dev)
{
struct cx88_core *core = dev->core;
/* stop dma */
cx_clear(MO_VID_DMACNTRL, 0x11);
/* disable capture */
cx_clear(VID_CAPTURE_CONTROL,0x06);
/* disable irqs */
cx_clear(MO_PCI_INTMSK, PCI_INT_VIDINT);
cx_clear(MO_VID_INTMSK, 0x0f0011);
return 0;
}
#endif
static int restart_video_queue(struct cx8800_dev *dev,
struct cx88_dmaqueue *q)
{
struct cx88_core *core = dev->core;
struct cx88_buffer *buf, *prev;
if (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
dprintk(2,"restart_queue [%p/%d]: restart dma\n",
buf, buf->vb.i);
start_video_dma(dev, q, buf);
list_for_each_entry(buf, &q->active, vb.queue)
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
return 0;
}
prev = NULL;
for (;;) {
if (list_empty(&q->queued))
return 0;
buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
if (NULL == prev) {
list_move_tail(&buf->vb.queue, &q->active);
start_video_dma(dev, q, buf);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(2,"[%p/%d] restart_queue - first active\n",
buf,buf->vb.i);
} else if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_move_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);
dprintk(2,"[%p/%d] restart_queue - move to active\n",
buf,buf->vb.i);
} else {
return 0;
}
prev = buf;
}
}
/* ------------------------------------------------------------------ */
static int
buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
{
struct cx8800_fh *fh = q->priv_data;
*size = fh->fmt->depth*fh->width*fh->height >> 3;
if (0 == *count)
*count = 32;
while (*size * *count > vid_limit * 1024 * 1024)
(*count)--;
return 0;
}
static int
buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx8800_fh *fh = q->priv_data;
struct cx8800_dev *dev = fh->dev;
struct cx88_core *core = dev->core;
struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
int rc, init_buffer = 0;
BUG_ON(NULL == fh->fmt);
if (fh->width < 48 || fh->width > norm_maxw(core->tvnorm) ||
fh->height < 32 || fh->height > norm_maxh(core->tvnorm))
return -EINVAL;
buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
if (buf->fmt != fh->fmt ||
buf->vb.width != fh->width ||
buf->vb.height != fh->height ||
buf->vb.field != field) {
buf->fmt = fh->fmt;
buf->vb.width = fh->width;
buf->vb.height = fh->height;
buf->vb.field = field;
init_buffer = 1;
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
init_buffer = 1;
if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
goto fail;
}
if (init_buffer) {
buf->bpl = buf->vb.width * buf->fmt->depth >> 3;
switch (buf->vb.field) {
case V4L2_FIELD_TOP:
cx88_risc_buffer(dev->pci, &buf->risc,
dma->sglist, 0, UNSET,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_BOTTOM:
cx88_risc_buffer(dev->pci, &buf->risc,
dma->sglist, UNSET, 0,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_INTERLACED:
cx88_risc_buffer(dev->pci, &buf->risc,
dma->sglist, 0, buf->bpl,
buf->bpl, buf->bpl,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_TB:
cx88_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
0, buf->bpl * (buf->vb.height >> 1),
buf->bpl, 0,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_BT:
cx88_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
buf->bpl * (buf->vb.height >> 1), 0,
buf->bpl, 0,
buf->vb.height >> 1);
break;
default:
BUG();
}
}
dprintk(2,"[%p/%d] buffer_prepare - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
buf, buf->vb.i,
fh->width, fh->height, fh->fmt->depth, fh->fmt->name,
(unsigned long)buf->risc.dma);
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx88_free_buffer(q,buf);
return rc;
}
static void
buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
struct cx88_buffer *prev;
struct cx8800_fh *fh = vq->priv_data;
struct cx8800_dev *dev = fh->dev;
struct cx88_core *core = dev->core;
struct cx88_dmaqueue *q = &dev->vidq;
/* 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);
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);
start_video_dma(dev, q, buf);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(2,"[%p/%d] buffer_queue - first active\n",
buf, buf->vb.i);
} else {
prev = list_entry(q->active.prev, struct cx88_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);
dprintk(2,"[%p/%d] buffer_queue - append to active\n",
buf, buf->vb.i);
} 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);
}
}
}
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
cx88_free_buffer(q,buf);
}
static struct videobuf_queue_ops cx8800_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
/* ------------------------------------------------------------------ */
/* ------------------------------------------------------------------ */
static struct videobuf_queue* get_queue(struct cx8800_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return &fh->vidq;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return &fh->vbiq;
default:
BUG();
return NULL;
}
}
static int get_ressource(struct cx8800_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return RESOURCE_VIDEO;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return RESOURCE_VBI;
default:
BUG();
return 0;
}
}
static int video_open(struct file *file)
{
int minor = video_devdata(file)->minor;
struct cx8800_dev *h,*dev = NULL;
struct cx88_core *core;
struct cx8800_fh *fh;
enum v4l2_buf_type type = 0;
int radio = 0;
lock_kernel();
list_for_each_entry(h, &cx8800_devlist, devlist) {
if (h->video_dev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
if (h->vbi_dev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VBI_CAPTURE;
}
if (h->radio_dev &&
h->radio_dev->minor == minor) {
radio = 1;
dev = h;
}
}
if (NULL == dev) {
unlock_kernel();
return -ENODEV;
}
core = dev->core;
dprintk(1,"open minor=%d radio=%d type=%s\n",
minor,radio,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->radio = radio;
fh->type = type;
fh->width = 320;
fh->height = 240;
fh->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
videobuf_queue_sg_init(&fh->vidq, &cx8800_video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx88_buffer),
fh);
videobuf_queue_sg_init(&fh->vbiq, &cx8800_vbi_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct cx88_buffer),
fh);
if (fh->radio) {
dprintk(1,"video_open: setting radio device\n");
cx_write(MO_GP3_IO, core->board.radio.gpio3);
cx_write(MO_GP0_IO, core->board.radio.gpio0);
cx_write(MO_GP1_IO, core->board.radio.gpio1);
cx_write(MO_GP2_IO, core->board.radio.gpio2);
if (core->board.radio.audioroute) {
if(core->board.audio_chip &&
core->board.audio_chip == V4L2_IDENT_WM8775) {
call_all(core, audio, s_routing,
core->board.radio.audioroute, 0, 0);
}
/* "I2S ADC mode" */
core->tvaudio = WW_I2SADC;
cx88_set_tvaudio(core);
} else {
/* FM Mode */
core->tvaudio = WW_FM;
cx88_set_tvaudio(core);
cx88_set_stereo(core,V4L2_TUNER_MODE_STEREO,1);
}
call_all(core, tuner, s_radio);
}
unlock_kernel();
atomic_inc(&core->users);
return 0;
}
static ssize_t
video_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
{
struct cx8800_fh *fh = file->private_data;
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (res_locked(fh->dev,RESOURCE_VIDEO))
return -EBUSY;
return videobuf_read_one(&fh->vidq, data, count, ppos,
file->f_flags & O_NONBLOCK);
case V4L2_BUF_TYPE_VBI_CAPTURE:
if (!res_get(fh->dev,fh,RESOURCE_VBI))
return -EBUSY;
return videobuf_read_stream(&fh->vbiq, data, count, ppos, 1,
file->f_flags & O_NONBLOCK);
default:
BUG();
return 0;
}
}
static unsigned int
video_poll(struct file *file, struct poll_table_struct *wait)
{
struct cx8800_fh *fh = file->private_data;
struct cx88_buffer *buf;
if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
if (!res_get(fh->dev,fh,RESOURCE_VBI))
return POLLERR;
return videobuf_poll_stream(file, &fh->vbiq, wait);
}
if (res_check(fh,RESOURCE_VIDEO)) {
/* streaming capture */
if (list_empty(&fh->vidq.stream))
return POLLERR;
buf = list_entry(fh->vidq.stream.next,struct cx88_buffer,vb.stream);
} else {
/* read() capture */
buf = (struct cx88_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)
return POLLIN|POLLRDNORM;
return 0;
}
static int video_release(struct file *file)
{
struct cx8800_fh *fh = file->private_data;
struct cx8800_dev *dev = fh->dev;
/* turn off overlay */
if (res_check(fh, RESOURCE_OVERLAY)) {
/* FIXME */
res_free(dev,fh,RESOURCE_OVERLAY);
}
/* stop video capture */
if (res_check(fh, RESOURCE_VIDEO)) {
videobuf_queue_cancel(&fh->vidq);
res_free(dev,fh,RESOURCE_VIDEO);
}
if (fh->vidq.read_buf) {
buffer_release(&fh->vidq,fh->vidq.read_buf);
kfree(fh->vidq.read_buf);
}
/* stop vbi capture */
if (res_check(fh, RESOURCE_VBI)) {
videobuf_stop(&fh->vbiq);
res_free(dev,fh,RESOURCE_VBI);
}
videobuf_mmap_free(&fh->vidq);
videobuf_mmap_free(&fh->vbiq);
file->private_data = NULL;
kfree(fh);
mutex_lock(&dev->core->lock);
if(atomic_dec_and_test(&dev->core->users))
call_all(dev->core, tuner, s_standby);
mutex_unlock(&dev->core->lock);
return 0;
}
static int
video_mmap(struct file *file, struct vm_area_struct * vma)
{
struct cx8800_fh *fh = file->private_data;
return videobuf_mmap_mapper(get_queue(fh), vma);
}
/* ------------------------------------------------------------------ */
/* VIDEO CTRL IOCTLS */
int cx88_get_control (struct cx88_core *core, struct v4l2_control *ctl)
{
struct cx88_ctrl *c = NULL;
u32 value;
int i;
for (i = 0; i < CX8800_CTLS; i++)
if (cx8800_ctls[i].v.id == ctl->id)
c = &cx8800_ctls[i];
if (unlikely(NULL == c))
return -EINVAL;
value = c->sreg ? cx_sread(c->sreg) : cx_read(c->reg);
switch (ctl->id) {
case V4L2_CID_AUDIO_BALANCE:
ctl->value = ((value & 0x7f) < 0x40) ? ((value & 0x7f) + 0x40)
: (0x7f - (value & 0x7f));
break;
case V4L2_CID_AUDIO_VOLUME:
ctl->value = 0x3f - (value & 0x3f);
break;
default:
ctl->value = ((value + (c->off << c->shift)) & c->mask) >> c->shift;
break;
}
dprintk(1,"get_control id=0x%X(%s) ctrl=0x%02x, reg=0x%02x val=0x%02x (mask 0x%02x)%s\n",
ctl->id, c->v.name, ctl->value, c->reg,
value,c->mask, c->sreg ? " [shadowed]" : "");
return 0;
}
EXPORT_SYMBOL(cx88_get_control);
int cx88_set_control(struct cx88_core *core, struct v4l2_control *ctl)
{
struct cx88_ctrl *c = NULL;
u32 value,mask;
int i;
for (i = 0; i < CX8800_CTLS; i++) {
if (cx8800_ctls[i].v.id == ctl->id) {
c = &cx8800_ctls[i];
}
}
if (unlikely(NULL == c))
return -EINVAL;
if (ctl->value < c->v.minimum)
ctl->value = c->v.minimum;
if (ctl->value > c->v.maximum)
ctl->value = c->v.maximum;
mask=c->mask;
switch (ctl->id) {
case V4L2_CID_AUDIO_BALANCE:
value = (ctl->value < 0x40) ? (0x7f - ctl->value) : (ctl->value - 0x40);
break;
case V4L2_CID_AUDIO_VOLUME:
value = 0x3f - (ctl->value & 0x3f);
break;
case V4L2_CID_SATURATION:
/* special v_sat handling */
value = ((ctl->value - c->off) << c->shift) & c->mask;
if (core->tvnorm & V4L2_STD_SECAM) {
/* For SECAM, both U and V sat should be equal */
value=value<<8|value;
} else {
/* Keeps U Saturation proportional to V Sat */
value=(value*0x5a)/0x7f<<8|value;
}
mask=0xffff;
break;
case V4L2_CID_CHROMA_AGC:
/* Do not allow chroma AGC to be enabled for SECAM */
value = ((ctl->value - c->off) << c->shift) & c->mask;
if (core->tvnorm & V4L2_STD_SECAM && value)
return -EINVAL;
break;
default:
value = ((ctl->value - c->off) << c->shift) & c->mask;
break;
}
dprintk(1,"set_control id=0x%X(%s) ctrl=0x%02x, reg=0x%02x val=0x%02x (mask 0x%02x)%s\n",
ctl->id, c->v.name, ctl->value, c->reg, value,
mask, c->sreg ? " [shadowed]" : "");
if (c->sreg) {
cx_sandor(c->sreg, c->reg, mask, value);
} else {
cx_andor(c->reg, mask, value);
}
return 0;
}
EXPORT_SYMBOL(cx88_set_control);
static void init_controls(struct cx88_core *core)
{
struct v4l2_control ctrl;
int i;
for (i = 0; i < CX8800_CTLS; i++) {
ctrl.id=cx8800_ctls[i].v.id;
ctrl.value=cx8800_ctls[i].v.default_value;
cx88_set_control(core, &ctrl);
}
}
/* ------------------------------------------------------------------ */
/* VIDEO IOCTLS */
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx8800_fh *fh = priv;
f->fmt.pix.width = fh->width;
f->fmt.pix.height = fh->height;
f->fmt.pix.field = fh->vidq.field;
f->fmt.pix.pixelformat = fh->fmt->fourcc;
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fh->fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
struct cx8800_fmt *fmt;
enum v4l2_field field;
unsigned int maxw, maxh;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
if (NULL == fmt)
return -EINVAL;
field = f->fmt.pix.field;
maxw = norm_maxw(core->tvnorm);
maxh = norm_maxh(core->tvnorm);
if (V4L2_FIELD_ANY == field) {
field = (f->fmt.pix.height > maxh/2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_BOTTOM;
}
switch (field) {
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
maxh = maxh / 2;
break;
case V4L2_FIELD_INTERLACED:
break;
default:
return -EINVAL;
}
f->fmt.pix.field = field;
if (f->fmt.pix.height < 32)
f->fmt.pix.height = 32;
if (f->fmt.pix.height > maxh)
f->fmt.pix.height = maxh;
if (f->fmt.pix.width < 48)
f->fmt.pix.width = 48;
if (f->fmt.pix.width > maxw)
f->fmt.pix.width = maxw;
f->fmt.pix.width &= ~0x03;
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx8800_fh *fh = priv;
int err = vidioc_try_fmt_vid_cap (file,priv,f);
if (0 != err)
return err;
fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
fh->width = f->fmt.pix.width;
fh->height = f->fmt.pix.height;
fh->vidq.field = f->fmt.pix.field;
return 0;
}
static int vidioc_querycap (struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cx8800_dev *dev = ((struct cx8800_fh *)priv)->dev;
struct cx88_core *core = dev->core;
strcpy(cap->driver, "cx8800");
strlcpy(cap->card, core->board.name, sizeof(cap->card));
sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
cap->version = CX88_VERSION_CODE;
cap->capabilities =
V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING |
V4L2_CAP_VBI_CAPTURE;
if (UNSET != core->board.tuner_type)
cap->capabilities |= V4L2_CAP_TUNER;
return 0;
}
static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (unlikely(f->index >= ARRAY_SIZE(formats)))
return -EINVAL;
strlcpy(f->description,formats[f->index].name,sizeof(f->description));
f->pixelformat = formats[f->index].fourcc;
return 0;
}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
{
struct cx8800_fh *fh = priv;
return videobuf_cgmbuf (get_queue(fh), mbuf, 8);
}
#endif
static int vidioc_reqbufs (struct file *file, void *priv, struct v4l2_requestbuffers *p)
{
struct cx8800_fh *fh = priv;
return (videobuf_reqbufs(get_queue(fh), p));
}
static int vidioc_querybuf (struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx8800_fh *fh = priv;
return (videobuf_querybuf(get_queue(fh), p));
}
static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx8800_fh *fh = priv;
return (videobuf_qbuf(get_queue(fh), p));
}
static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx8800_fh *fh = priv;
return (videobuf_dqbuf(get_queue(fh), p,
file->f_flags & O_NONBLOCK));
}
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx8800_fh *fh = priv;
struct cx8800_dev *dev = fh->dev;
/* We should remember that this driver also supports teletext, */
/* so we have to test if the v4l2_buf_type is VBI capture data. */
if (unlikely((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)))
return -EINVAL;
if (unlikely(i != fh->type))
return -EINVAL;
if (unlikely(!res_get(dev,fh,get_ressource(fh))))
return -EBUSY;
return videobuf_streamon(get_queue(fh));
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx8800_fh *fh = priv;
struct cx8800_dev *dev = fh->dev;
int err, res;
if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
if (i != fh->type)
return -EINVAL;
res = get_ressource(fh);
err = videobuf_streamoff(get_queue(fh));
if (err < 0)
return err;
res_free(dev,fh,res);
return 0;
}
static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *tvnorms)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
mutex_lock(&core->lock);
cx88_set_tvnorm(core,*tvnorms);
mutex_unlock(&core->lock);
return 0;
}
/* only one input in this sample driver */
int cx88_enum_input (struct cx88_core *core,struct v4l2_input *i)
{
static const char *iname[] = {
[ CX88_VMUX_COMPOSITE1 ] = "Composite1",
[ CX88_VMUX_COMPOSITE2 ] = "Composite2",
[ CX88_VMUX_COMPOSITE3 ] = "Composite3",
[ CX88_VMUX_COMPOSITE4 ] = "Composite4",
[ CX88_VMUX_SVIDEO ] = "S-Video",
[ CX88_VMUX_TELEVISION ] = "Television",
[ CX88_VMUX_CABLE ] = "Cable TV",
[ CX88_VMUX_DVB ] = "DVB",
[ CX88_VMUX_DEBUG ] = "for debug only",
};
unsigned int n = i->index;
if (n >= 4)
return -EINVAL;
if (0 == INPUT(n).type)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name,iname[INPUT(n).type]);
if ((CX88_VMUX_TELEVISION == INPUT(n).type) ||
(CX88_VMUX_CABLE == INPUT(n).type))
i->type = V4L2_INPUT_TYPE_TUNER;
i->std = CX88_NORMS;
return 0;
}
EXPORT_SYMBOL(cx88_enum_input);
static int vidioc_enum_input (struct file *file, void *priv,
struct v4l2_input *i)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
return cx88_enum_input (core,i);
}
static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
*i = core->input;
return 0;
}
static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
if (i >= 4)
return -EINVAL;
mutex_lock(&core->lock);
cx88_newstation(core);
cx88_video_mux(core,i);
mutex_unlock(&core->lock);
return 0;
}
static int vidioc_queryctrl (struct file *file, void *priv,
struct v4l2_queryctrl *qctrl)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
if (unlikely(qctrl->id == 0))
return -EINVAL;
return cx8800_ctrl_query(core, qctrl);
}
static int vidioc_g_ctrl (struct file *file, void *priv,
struct v4l2_control *ctl)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
return
cx88_get_control(core,ctl);
}
static int vidioc_s_ctrl (struct file *file, void *priv,
struct v4l2_control *ctl)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
return
cx88_set_control(core,ctl);
}
static int vidioc_g_tuner (struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
u32 reg;
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
cx88_get_stereo(core ,t);
reg = cx_read(MO_DEVICE_STATUS);
t->signal = (reg & (1<<5)) ? 0xffff : 0x0000;
return 0;
}
static int vidioc_s_tuner (struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
if (UNSET == core->board.tuner_type)
return -EINVAL;
if (0 != t->index)
return -EINVAL;
cx88_set_stereo(core, t->audmode, 1);
return 0;
}
static int vidioc_g_frequency (struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx8800_fh *fh = priv;
struct cx88_core *core = fh->dev->core;
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
/* f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; */
f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
f->frequency = core->freq;
call_all(core, tuner, g_frequency, f);
return 0;
}
int cx88_set_freq (struct cx88_core *core,
struct v4l2_frequency *f)
{
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
if (unlikely(f->tuner != 0))
return -EINVAL;
mutex_lock(&core->lock);
core->freq = f->frequency;
cx88_newstation(core);
call_all(core, tuner, s_frequency, f);
/* When changing channels it is required to reset TVAUDIO */
msleep (10);
cx88_set_tvaudio(core);
mutex_unlock(&core->lock);
return 0;
}
EXPORT_SYMBOL(cx88_set_freq);
static int vidioc_s_frequency (struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx8800_fh *fh = priv;
struct cx88_core *core = fh->dev->core;
if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
return -EINVAL;
if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
return -EINVAL;
return
cx88_set_freq (core,f);
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vidioc_g_register (struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
/* cx2388x has a 24-bit register space */
reg->val = cx_read(reg->reg & 0xffffff);
reg->size = 4;
return 0;
}
static int vidioc_s_register (struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
cx_write(reg->reg & 0xffffff, reg->val);
return 0;
}
#endif
/* ----------------------------------------------------------- */
/* RADIO ESPECIFIC IOCTLS */
/* ----------------------------------------------------------- */
static int radio_querycap (struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cx8800_dev *dev = ((struct cx8800_fh *)priv)->dev;
struct cx88_core *core = dev->core;
strcpy(cap->driver, "cx8800");
strlcpy(cap->card, core->board.name, sizeof(cap->card));
sprintf(cap->bus_info,"PCI:%s", pci_name(dev->pci));
cap->version = CX88_VERSION_CODE;
cap->capabilities = V4L2_CAP_TUNER;
return 0;
}
static int radio_g_tuner (struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
if (unlikely(t->index > 0))
return -EINVAL;
strcpy(t->name, "Radio");
t->type = V4L2_TUNER_RADIO;
call_all(core, tuner, g_tuner, t);
return 0;
}
static int radio_enum_input (struct file *file, void *priv,
struct v4l2_input *i)
{
if (i->index != 0)
return -EINVAL;
strcpy(i->name,"Radio");
i->type = V4L2_INPUT_TYPE_TUNER;
return 0;
}
static int radio_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
{
if (unlikely(a->index))
return -EINVAL;
strcpy(a->name,"Radio");
return 0;
}
/* FIXME: Should add a standard for radio */
static int radio_s_tuner (struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core;
if (0 != t->index)
return -EINVAL;
call_all(core, tuner, s_tuner, t);
return 0;
}
static int radio_s_audio (struct file *file, void *fh,
struct v4l2_audio *a)
{
return 0;
}
static int radio_s_input (struct file *file, void *fh, unsigned int i)
{
return 0;
}
static int radio_queryctrl (struct file *file, void *priv,
struct v4l2_queryctrl *c)
{
int i;
if (c->id < V4L2_CID_BASE ||
c->id >= V4L2_CID_LASTP1)
return -EINVAL;
if (c->id == V4L2_CID_AUDIO_MUTE) {
for (i = 0; i < CX8800_CTLS; i++)
if (cx8800_ctls[i].v.id == c->id)
break;
*c = cx8800_ctls[i].v;
} else
*c = no_ctl;
return 0;
}
/* ----------------------------------------------------------- */
static void cx8800_vid_timeout(unsigned long data)
{
struct cx8800_dev *dev = (struct cx8800_dev*)data;
struct cx88_core *core = dev->core;
struct cx88_dmaqueue *q = &dev->vidq;
struct cx88_buffer *buf;
unsigned long flags;
cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH21]);
cx_clear(MO_VID_DMACNTRL, 0x11);
cx_clear(VID_CAPTURE_CONTROL, 0x06);
spin_lock_irqsave(&dev->slock,flags);
while (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = VIDEOBUF_ERROR;
wake_up(&buf->vb.done);
printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", core->name,
buf, buf->vb.i, (unsigned long)buf->risc.dma);
}
restart_video_queue(dev,q);
spin_unlock_irqrestore(&dev->slock,flags);
}
static char *cx88_vid_irqs[32] = {
"y_risci1", "u_risci1", "v_risci1", "vbi_risc1",
"y_risci2", "u_risci2", "v_risci2", "vbi_risc2",
"y_oflow", "u_oflow", "v_oflow", "vbi_oflow",
"y_sync", "u_sync", "v_sync", "vbi_sync",
"opc_err", "par_err", "rip_err", "pci_abort",
};
static void cx8800_vid_irq(struct cx8800_dev *dev)
{
struct cx88_core *core = dev->core;
u32 status, mask, count;
status = cx_read(MO_VID_INTSTAT);
mask = cx_read(MO_VID_INTMSK);
if (0 == (status & mask))
return;
cx_write(MO_VID_INTSTAT, status);
if (irq_debug || (status & mask & ~0xff))
cx88_print_irqbits(core->name, "irq vid",
cx88_vid_irqs, ARRAY_SIZE(cx88_vid_irqs),
status, mask);
/* risc op code error */
if (status & (1 << 16)) {
printk(KERN_WARNING "%s/0: video risc op code error\n",core->name);
cx_clear(MO_VID_DMACNTRL, 0x11);
cx_clear(VID_CAPTURE_CONTROL, 0x06);
cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH21]);
}
/* risc1 y */
if (status & 0x01) {
spin_lock(&dev->slock);
count = cx_read(MO_VIDY_GPCNT);
cx88_wakeup(core, &dev->vidq, count);
spin_unlock(&dev->slock);
}
/* risc1 vbi */
if (status & 0x08) {
spin_lock(&dev->slock);
count = cx_read(MO_VBI_GPCNT);
cx88_wakeup(core, &dev->vbiq, count);
spin_unlock(&dev->slock);
}
/* risc2 y */
if (status & 0x10) {
dprintk(2,"stopper video\n");
spin_lock(&dev->slock);
restart_video_queue(dev,&dev->vidq);
spin_unlock(&dev->slock);
}
/* risc2 vbi */
if (status & 0x80) {
dprintk(2,"stopper vbi\n");
spin_lock(&dev->slock);
cx8800_restart_vbi_queue(dev,&dev->vbiq);
spin_unlock(&dev->slock);
}
}
static irqreturn_t cx8800_irq(int irq, void *dev_id)
{
struct cx8800_dev *dev = dev_id;
struct cx88_core *core = dev->core;
u32 status;
int loop, handled = 0;
for (loop = 0; loop < 10; loop++) {
status = cx_read(MO_PCI_INTSTAT) &
(core->pci_irqmask | PCI_INT_VIDINT);
if (0 == status)
goto out;
cx_write(MO_PCI_INTSTAT, status);
handled = 1;
if (status & core->pci_irqmask)
cx88_core_irq(core,status);
if (status & PCI_INT_VIDINT)
cx8800_vid_irq(dev);
};
if (10 == loop) {
printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
core->name);
cx_write(MO_PCI_INTMSK,0);
}
out:
return IRQ_RETVAL(handled);
}
/* ----------------------------------------------------------- */
/* 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_g_fmt_vbi_cap = cx8800_vbi_fmt,
.vidioc_try_fmt_vbi_cap = cx8800_vbi_fmt,
.vidioc_s_fmt_vbi_cap = cx8800_vbi_fmt,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_s_std = vidioc_s_std,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
};
static struct video_device cx8800_vbi_template;
static struct video_device cx8800_video_template = {
.name = "cx8800-video",
.fops = &video_fops,
.minor = -1,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = CX88_NORMS,
.current_norm = V4L2_STD_NTSC_M,
};
static const struct v4l2_file_operations radio_fops =
{
.owner = THIS_MODULE,
.open = video_open,
.release = video_release,
.ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops radio_ioctl_ops = {
.vidioc_querycap = radio_querycap,
.vidioc_g_tuner = radio_g_tuner,
.vidioc_enum_input = radio_enum_input,
.vidioc_g_audio = radio_g_audio,
.vidioc_s_tuner = radio_s_tuner,
.vidioc_s_audio = radio_s_audio,
.vidioc_s_input = radio_s_input,
.vidioc_queryctrl = radio_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
};
static struct video_device cx8800_radio_template = {
.name = "cx8800-radio",
.fops = &radio_fops,
.minor = -1,
.ioctl_ops = &radio_ioctl_ops,
};
/* ----------------------------------------------------------- */
static void cx8800_unregister_video(struct cx8800_dev *dev)
{
if (dev->radio_dev) {
if (-1 != dev->radio_dev->minor)
video_unregister_device(dev->radio_dev);
else
video_device_release(dev->radio_dev);
dev->radio_dev = NULL;
}
if (dev->vbi_dev) {
if (-1 != dev->vbi_dev->minor)
video_unregister_device(dev->vbi_dev);
else
video_device_release(dev->vbi_dev);
dev->vbi_dev = NULL;
}
if (dev->video_dev) {
if (-1 != dev->video_dev->minor)
video_unregister_device(dev->video_dev);
else
video_device_release(dev->video_dev);
dev->video_dev = NULL;
}
}
static int __devinit cx8800_initdev(struct pci_dev *pci_dev,
const struct pci_device_id *pci_id)
{
struct cx8800_dev *dev;
struct cx88_core *core;
int err;
dev = kzalloc(sizeof(*dev),GFP_KERNEL);
if (NULL == dev)
return -ENOMEM;
/* pci init */
dev->pci = pci_dev;
if (pci_enable_device(pci_dev)) {
err = -EIO;
goto fail_free;
}
core = cx88_core_get(dev->pci);
if (NULL == core) {
err = -EINVAL;
goto fail_free;
}
dev->core = core;
/* print pci info */
pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &dev->pci_lat);
printk(KERN_INFO "%s/0: found at %s, rev: %d, irq: %d, "
"latency: %d, mmio: 0x%llx\n", core->name,
pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
dev->pci_lat,(unsigned long long)pci_resource_start(pci_dev,0));
pci_set_master(pci_dev);
if (!pci_dma_supported(pci_dev,DMA_BIT_MASK(32))) {
printk("%s/0: Oops: no 32bit PCI DMA ???\n",core->name);
err = -EIO;
goto fail_core;
}
/* Initialize VBI template */
memcpy( &cx8800_vbi_template, &cx8800_video_template,
sizeof(cx8800_vbi_template) );
strcpy(cx8800_vbi_template.name,"cx8800-vbi");
/* initialize driver struct */
spin_lock_init(&dev->slock);
core->tvnorm = cx8800_video_template.current_norm;
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
INIT_LIST_HEAD(&dev->vidq.queued);
dev->vidq.timeout.function = cx8800_vid_timeout;
dev->vidq.timeout.data = (unsigned long)dev;
init_timer(&dev->vidq.timeout);
cx88_risc_stopper(dev->pci,&dev->vidq.stopper,
MO_VID_DMACNTRL,0x11,0x00);
/* init vbi dma queues */
INIT_LIST_HEAD(&dev->vbiq.active);
INIT_LIST_HEAD(&dev->vbiq.queued);
dev->vbiq.timeout.function = cx8800_vbi_timeout;
dev->vbiq.timeout.data = (unsigned long)dev;
init_timer(&dev->vbiq.timeout);
cx88_risc_stopper(dev->pci,&dev->vbiq.stopper,
MO_VID_DMACNTRL,0x88,0x00);
/* get irq */
err = request_irq(pci_dev->irq, cx8800_irq,
IRQF_SHARED | IRQF_DISABLED, core->name, dev);
if (err < 0) {
printk(KERN_ERR "%s/0: can't get IRQ %d\n",
core->name,pci_dev->irq);
goto fail_core;
}
cx_set(MO_PCI_INTMSK, core->pci_irqmask);
/* load and configure helper modules */
if (core->board.audio_chip == V4L2_IDENT_WM8775)
v4l2_i2c_new_subdev(&core->v4l2_dev, &core->i2c_adap,
"wm8775", "wm8775", 0x36 >> 1);
if (core->board.audio_chip == V4L2_IDENT_TVAUDIO) {
/* This probes for a tda9874 as is used on some
Pixelview Ultra boards. */
v4l2_i2c_new_probed_subdev_addr(&core->v4l2_dev,
&core->i2c_adap,
"tvaudio", "tvaudio", 0xb0 >> 1);
}
switch (core->boardnr) {
case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
case CX88_BOARD_DVICO_FUSIONHDTV_7_GOLD: {
static struct i2c_board_info rtc_info = {
I2C_BOARD_INFO("isl1208", 0x6f)
};
request_module("rtc-isl1208");
core->i2c_rtc = i2c_new_device(&core->i2c_adap, &rtc_info);
}
/* break intentionally omitted */
case CX88_BOARD_DVICO_FUSIONHDTV_5_PCI_NANO:
request_module("ir-kbd-i2c");
}
/* register v4l devices */
dev->video_dev = cx88_vdev_init(core,dev->pci,
&cx8800_video_template,"video");
err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
video_nr[core->nr]);
if (err < 0) {
printk(KERN_ERR "%s/0: can't register video device\n",
core->name);
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
core->name, dev->video_dev->num);
dev->vbi_dev = cx88_vdev_init(core,dev->pci,&cx8800_vbi_template,"vbi");
err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
vbi_nr[core->nr]);
if (err < 0) {
printk(KERN_ERR "%s/0: can't register vbi device\n",
core->name);
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device vbi%d\n",
core->name, dev->vbi_dev->num);
if (core->board.radio.type == CX88_RADIO) {
dev->radio_dev = cx88_vdev_init(core,dev->pci,
&cx8800_radio_template,"radio");
err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
radio_nr[core->nr]);
if (err < 0) {
printk(KERN_ERR "%s/0: can't register radio device\n",
core->name);
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device radio%d\n",
core->name, dev->radio_dev->num);
}
/* everything worked */
list_add_tail(&dev->devlist,&cx8800_devlist);
pci_set_drvdata(pci_dev,dev);
/* initial device configuration */
mutex_lock(&core->lock);
cx88_set_tvnorm(core,core->tvnorm);
init_controls(core);
cx88_video_mux(core,0);
mutex_unlock(&core->lock);
/* start tvaudio thread */
if (core->board.tuner_type != TUNER_ABSENT) {
core->kthread = kthread_run(cx88_audio_thread, core, "cx88 tvaudio");
if (IS_ERR(core->kthread)) {
err = PTR_ERR(core->kthread);
printk(KERN_ERR "%s/0: failed to create cx88 audio thread, err=%d\n",
core->name, err);
}
}
return 0;
fail_unreg:
cx8800_unregister_video(dev);
free_irq(pci_dev->irq, dev);
fail_core:
cx88_core_put(core,dev->pci);
fail_free:
kfree(dev);
return err;
}
static void __devexit cx8800_finidev(struct pci_dev *pci_dev)
{
struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
struct cx88_core *core = dev->core;
/* stop thread */
if (core->kthread) {
kthread_stop(core->kthread);
core->kthread = NULL;
}
if (core->ir)
cx88_ir_stop(core, core->ir);
cx88_shutdown(core); /* FIXME */
pci_disable_device(pci_dev);
/* unregister stuff */
free_irq(pci_dev->irq, dev);
cx8800_unregister_video(dev);
pci_set_drvdata(pci_dev, NULL);
/* free memory */
btcx_riscmem_free(dev->pci,&dev->vidq.stopper);
list_del(&dev->devlist);
cx88_core_put(core,dev->pci);
kfree(dev);
}
#ifdef CONFIG_PM
static int cx8800_suspend(struct pci_dev *pci_dev, pm_message_t state)
{
struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
struct cx88_core *core = dev->core;
/* stop video+vbi capture */
spin_lock(&dev->slock);
if (!list_empty(&dev->vidq.active)) {
printk("%s/0: suspend video\n", core->name);
stop_video_dma(dev);
del_timer(&dev->vidq.timeout);
}
if (!list_empty(&dev->vbiq.active)) {
printk("%s/0: suspend vbi\n", core->name);
cx8800_stop_vbi_dma(dev);
del_timer(&dev->vbiq.timeout);
}
spin_unlock(&dev->slock);
if (core->ir)
cx88_ir_stop(core, core->ir);
/* FIXME -- shutdown device */
cx88_shutdown(core);
pci_save_state(pci_dev);
if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
pci_disable_device(pci_dev);
dev->state.disabled = 1;
}
return 0;
}
static int cx8800_resume(struct pci_dev *pci_dev)
{
struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
struct cx88_core *core = dev->core;
int err;
if (dev->state.disabled) {
err=pci_enable_device(pci_dev);
if (err) {
printk(KERN_ERR "%s/0: can't enable device\n",
core->name);
return err;
}
dev->state.disabled = 0;
}
err= pci_set_power_state(pci_dev, PCI_D0);
if (err) {
printk(KERN_ERR "%s/0: can't set power state\n", core->name);
pci_disable_device(pci_dev);
dev->state.disabled = 1;
return err;
}
pci_restore_state(pci_dev);
/* FIXME: re-initialize hardware */
cx88_reset(core);
if (core->ir)
cx88_ir_start(core, core->ir);
cx_set(MO_PCI_INTMSK, core->pci_irqmask);
/* restart video+vbi capture */
spin_lock(&dev->slock);
if (!list_empty(&dev->vidq.active)) {
printk("%s/0: resume video\n", core->name);
restart_video_queue(dev,&dev->vidq);
}
if (!list_empty(&dev->vbiq.active)) {
printk("%s/0: resume vbi\n", core->name);
cx8800_restart_vbi_queue(dev,&dev->vbiq);
}
spin_unlock(&dev->slock);
return 0;
}
#endif
/* ----------------------------------------------------------- */
static struct pci_device_id cx8800_pci_tbl[] = {
{
.vendor = 0x14f1,
.device = 0x8800,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},{
/* --- end of list --- */
}
};
MODULE_DEVICE_TABLE(pci, cx8800_pci_tbl);
static struct pci_driver cx8800_pci_driver = {
.name = "cx8800",
.id_table = cx8800_pci_tbl,
.probe = cx8800_initdev,
.remove = __devexit_p(cx8800_finidev),
#ifdef CONFIG_PM
.suspend = cx8800_suspend,
.resume = cx8800_resume,
#endif
};
static int cx8800_init(void)
{
printk(KERN_INFO "cx88/0: cx2388x v4l2 driver version %d.%d.%d loaded\n",
(CX88_VERSION_CODE >> 16) & 0xff,
(CX88_VERSION_CODE >> 8) & 0xff,
CX88_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
return pci_register_driver(&cx8800_pci_driver);
}
static void cx8800_fini(void)
{
pci_unregister_driver(&cx8800_pci_driver);
}
module_init(cx8800_init);
module_exit(cx8800_fini);
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
* kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
*/
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