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linux/drivers/media/pci/tw68/tw68-core.c

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/*
* tw68-core.c
* Core functions for the Techwell 68xx driver
*
* Much of this code is derived from the cx88 and sa7134 drivers, which
* were in turn derived from the bt87x driver. The original work was by
* Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,
* Hans Verkuil, Andy Walls and many others. Their work is gratefully
* acknowledged. Full credit goes to them - any problems within this code
* are mine.
*
* Copyright (C) 2009 William M. Brack <wbrack@mmm.com.hk>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/kmod.h>
#include <linux/sound.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/dma-mapping.h>
#include <linux/pm.h>
#include <media/v4l2-dev.h>
#include "tw68.h"
#include "tw68-reg.h"
MODULE_DESCRIPTION("v4l2 driver module for tw6800 based video capture cards");
MODULE_AUTHOR("William M. Brack <wbrack@mmm.com.hk>");
MODULE_LICENSE("GPL");
static unsigned int core_debug;
module_param(core_debug, int, 0644);
MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
static unsigned int gpio_tracking;
module_param(gpio_tracking, int, 0644);
MODULE_PARM_DESC(gpio_tracking, "enable debug messages [gpio]");
static unsigned int alsa = 1;
module_param(alsa, int, 0644);
MODULE_PARM_DESC(alsa, "enable/disable ALSA DMA sound [dmasound]");
static unsigned int latency = UNSET;
module_param(latency, int, 0444);
MODULE_PARM_DESC(latency, "pci latency timer");
static unsigned int nocomb;
module_param(nocomb, int, 0644);
MODULE_PARM_DESC(nocomb, "disable comb filter");
static unsigned int video_nr[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
static unsigned int tuner[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
static unsigned int card[] = {[0 ... (TW68_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_param_array(tuner, int, NULL, 0444);
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "video device number");
MODULE_PARM_DESC(vbi_nr, "vbi device number");
MODULE_PARM_DESC(radio_nr, "radio device number");
MODULE_PARM_DESC(tuner, "tuner type");
MODULE_PARM_DESC(card, "card type");
LIST_HEAD(tw68_devlist);
EXPORT_SYMBOL(tw68_devlist);
DEFINE_MUTEX(tw68_devlist_lock);
EXPORT_SYMBOL(tw68_devlist_lock);
static LIST_HEAD(mops_list);
static unsigned int tw68_devcount; /* curr tot num of devices present */
int (*tw68_dmasound_init)(struct tw68_dev *dev);
EXPORT_SYMBOL(tw68_dmasound_init);
int (*tw68_dmasound_exit)(struct tw68_dev *dev);
EXPORT_SYMBOL(tw68_dmasound_exit);
#define dprintk(level, fmt, arg...) if (core_debug & (level)) \
printk(KERN_DEBUG "%s: " fmt, dev->name , ## arg)
/* ------------------------------------------------------------------ */
void tw68_dma_free(struct videobuf_queue *q, struct tw68_buf *buf)
{
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
if (core_debug & DBG_FLOW)
printk(KERN_DEBUG "%s: called\n", __func__);
BUG_ON(in_interrupt());
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,36)
videobuf_waiton(&buf->vb, 0, 0);
#else
videobuf_waiton(q, &buf->vb, 0, 0);
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,35)
videobuf_dma_unmap(q, dma);
#else
videobuf_dma_unmap(q->dev, dma);
#endif
videobuf_dma_free(dma);
/* if no risc area allocated, btcx_riscmem_free just returns */
btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
/* ------------------------------------------------------------------ */
/* ------------- placeholders for later development ----------------- */
static int tw68_input_init1(struct tw68_dev *dev)
{
return 0;
}
static void tw68_input_fini(struct tw68_dev *dev)
{
return;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
static void tw68_ir_start(struct tw68_dev *dev, struct card_ir *ir)
{
return;
}
static void tw68_ir_stop(struct tw68_dev *dev)
{
return;
}
#endif
/* ------------------------------------------------------------------ */
/*
* Buffer handling routines
*
* These routines are "generic", i.e. are intended to be used by more
* than one module, e.g. the video and the transport stream modules.
* To accomplish this generality, callbacks are used whenever some
* module-specific test or action is required.
*/
/* resends a current buffer in queue after resume */
int tw68_buffer_requeue(struct tw68_dev *dev,
struct tw68_dmaqueue *q)
{
struct tw68_buf *buf, *prev;
dprintk(DBG_FLOW | DBG_TESTING, "%s: called\n", __func__);
if (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct tw68_buf, vb.queue);
dprintk(DBG_BUFF, "%s: [%p/%d] restart dma\n", __func__,
buf, buf->vb.i);
q->start_dma(dev, q, buf);
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 tw68_buf, vb.queue);
/* if nothing precedes this one */
if (NULL == prev) {
list_move_tail(&buf->vb.queue, &q->active);
q->start_dma(dev, q, buf);
buf->activate(dev, buf, NULL);
dprintk(DBG_BUFF, "%s: [%p/%d] first active\n",
__func__, buf, buf->vb.i);
} else if (q->buf_compat(prev, buf) &&
(prev->fmt == buf->fmt)) {
list_move_tail(&buf->vb.queue, &q->active);
buf->activate(dev, buf, NULL);
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
dprintk(DBG_BUFF, "%s: [%p/%d] move to active\n",
__func__, buf, buf->vb.i);
} else {
dprintk(DBG_BUFF, "%s: no action taken\n", __func__);
return 0;
}
prev = buf;
}
}
/* nr of (tw68-)pages for the given buffer size */
static int tw68_buffer_pages(int size)
{
size = PAGE_ALIGN(size);
size += PAGE_SIZE; /* for non-page-aligned buffers */
size /= 4096;
return size;
}
/* calc max # of buffers from size (must not exceed the 4MB virtual
* address space per DMA channel) */
int tw68_buffer_count(unsigned int size, unsigned int count)
{
unsigned int maxcount;
maxcount = 1024 / tw68_buffer_pages(size);
if (count > maxcount)
count = maxcount;
return count;
}
/*
* tw68_wakeup
*
* Called when the driver completes filling a buffer, and tasks waiting
* for the data need to be awakened.
*/
void tw68_wakeup(struct tw68_dmaqueue *q, unsigned int *fc)
{
struct tw68_dev *dev = q->dev;
struct tw68_buf *buf;
dprintk(DBG_FLOW, "%s: called\n", __func__);
if (list_empty(&q->active)) {
dprintk(DBG_BUFF | DBG_TESTING, "%s: active list empty",
__func__);
del_timer(&q->timeout);
return;
}
buf = list_entry(q->active.next, struct tw68_buf, vb.queue);
do_gettimeofday(&buf->vb.ts);
buf->vb.field_count = (*fc)++;
dprintk(DBG_BUFF | DBG_TESTING, "%s: [%p/%d] field_count=%d\n",
__func__, buf, buf->vb.i, *fc);
buf->vb.state = VIDEOBUF_DONE;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
}
/*
* tw68_buffer_queue
*
* Add specified buffer to specified queue
*/
void tw68_buffer_queue(struct tw68_dev *dev,
struct tw68_dmaqueue *q,
struct tw68_buf *buf)
{
struct tw68_buf *prev;
dprintk(DBG_FLOW, "%s: called\n", __func__);
assert_spin_locked(&dev->slock);
dprintk(DBG_BUFF, "%s: queuing buffer %p\n", __func__, buf);
/* append a 'JUMP to stopper' to the buffer risc program */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_INT_BIT);
buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
/* if this buffer is not "compatible" (in dimensions and format)
* with the currently active chain of buffers, we must change
* settings before filling it; if a previous buffer has already
* been determined to require changes, this buffer must follow
* it. To do this, we maintain a "queued" chain. If that
* chain exists, append this buffer to it */
if (!list_empty(&q->queued)) {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(DBG_BUFF, "%s: [%p/%d] appended to queued\n",
__func__, buf, buf->vb.i);
/* else if the 'active' chain doesn't yet exist we create it now */
} else if (list_empty(&q->active)) {
dprintk(DBG_BUFF, "%s: [%p/%d] first active\n",
__func__, buf, buf->vb.i);
list_add_tail(&buf->vb.queue, &q->active);
q->start_dma(dev, q, buf); /* 1st one - start dma */
/* TODO - why have we removed buf->count and q->count? */
buf->activate(dev, buf, NULL);
/* else we would like to put this buffer on the tail of the
* active chain, provided it is "compatible". */
} else {
/* "compatibility" depends upon the type of buffer */
prev = list_entry(q->active.prev, struct tw68_buf, vb.queue);
if (q->buf_compat(prev, buf)) {
/* If "compatible", append to active chain */
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
/* the param 'prev' is only for debug printing */
buf->activate(dev, buf, prev);
list_add_tail(&buf->vb.queue, &q->active);
dprintk(DBG_BUFF, "%s: [%p/%d] appended to active\n",
__func__, buf, buf->vb.i);
} else {
/* If "incompatible", append to queued chain */
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(DBG_BUFF, "%s: [%p/%d] incompatible - appended "
"to queued\n", __func__, buf, buf->vb.i);
}
}
}
/*
* tw68_buffer_timeout
*
* This routine is set as the video_q.timeout.function
*
* Log the event, try to reset the h/w.
* Flag the current buffer as failed, try to start again with next buff
*/
void tw68_buffer_timeout(unsigned long data)
{
struct tw68_dmaqueue *q = (struct tw68_dmaqueue *)data;
struct tw68_dev *dev = q->dev;
struct tw68_buf *buf;
unsigned long flags;
dprintk(DBG_FLOW, "%s: called\n", __func__);
spin_lock_irqsave(&dev->slock, flags);
/* flag all current active buffers as failed */
while (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct tw68_buf, vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = VIDEOBUF_ERROR;
wake_up(&buf->vb.done);
printk(KERN_INFO "%s/0: [%p/%d] timeout - dma=0x%08lx\n",
dev->name, buf, buf->vb.i,
(unsigned long)buf->risc.dma);
}
tw68_buffer_requeue(dev, q);
spin_unlock_irqrestore(&dev->slock, flags);
}
/* ------------------------------------------------------------------ */
/* early init (no i2c, no irq) */
/* Called from tw68_hw_init1 and tw68_resume */
static int tw68_hw_enable1(struct tw68_dev *dev)
{
return 0;
}
/*
* The device is given a "soft reset". According to the specifications,
* after this "all register content remain unchanged", so we also write
* to all specified registers manually as well (mostly to manufacturer's
* specified reset values)
*/
static int tw68_hw_init1(struct tw68_dev *dev)
{
dprintk(DBG_FLOW, "%s: called\n", __func__);
/* Assure all interrupts are disabled */
tw_writel(TW68_INTMASK, 0); /* 020 */
/* Clear any pending interrupts */
tw_writel(TW68_INTSTAT, 0xffffffff); /* 01C */
/* Stop risc processor, set default buffer level */
tw_writel(TW68_DMAC, 0x1600);
tw_writeb(TW68_ACNTL, 0x80); /* 218 soft reset */
msleep(100);
tw_writeb(TW68_INFORM, 0x40); /* 208 mux0, 27mhz xtal */
tw_writeb(TW68_OPFORM, 0x04); /* 20C analog line-lock */
tw_writeb(TW68_HSYNC, 0); /* 210 color-killer high sens */
tw_writeb(TW68_ACNTL, 0x42); /* 218 int vref #2, chroma adc off */
tw_writeb(TW68_CROP_HI, 0x02); /* 21C Hactive m.s. bits */
tw_writeb(TW68_VDELAY_LO, 0x12);/* 220 Mfg specified reset value */
tw_writeb(TW68_VACTIVE_LO, 0xf0);
tw_writeb(TW68_HDELAY_LO, 0x0f);
tw_writeb(TW68_HACTIVE_LO, 0xd0);
tw_writeb(TW68_CNTRL1, 0xcd); /* 230 Wide Chroma BPF B/W
* Secam reduction, Adap comb for
* NTSC, Op Mode 1 */
tw_writeb(TW68_VSCALE_LO, 0); /* 234 */
tw_writeb(TW68_SCALE_HI, 0x11); /* 238 */
tw_writeb(TW68_HSCALE_LO, 0); /* 23c */
tw_writeb(TW68_BRIGHT, 0); /* 240 */
tw_writeb(TW68_CONTRAST, 0x5c); /* 244 */
tw_writeb(TW68_SHARPNESS, 0x51);/* 248 */
tw_writeb(TW68_SAT_U, 0x80); /* 24C */
tw_writeb(TW68_SAT_V, 0x80); /* 250 */
tw_writeb(TW68_HUE, 0x00); /* 254 */
/* TODO - Check that none of these are set by control defaults */
tw_writeb(TW68_SHARP2, 0x53); /* 258 Mfg specified reset val */
tw_writeb(TW68_VSHARP, 0x80); /* 25C Sharpness Coring val 8 */
tw_writeb(TW68_CORING, 0x44); /* 260 CTI and Vert Peak coring */
tw_writeb(TW68_CNTRL2, 0x00); /* 268 No power saving enabled */
tw_writeb(TW68_SDT, 0x07); /* 270 Enable shadow reg, auto-det */
tw_writeb(TW68_SDTR, 0x7f); /* 274 All stds recog, don't start */
tw_writeb(TW68_CLMPG, 0x50); /* 280 Clamp end at 40 sys clocks */
tw_writeb(TW68_IAGC, 0x22); /* 284 Mfg specified reset val */
tw_writeb(TW68_AGCGAIN, 0xf0); /* 288 AGC gain when loop disabled */
tw_writeb(TW68_PEAKWT, 0xd8); /* 28C White peak threshold */
tw_writeb(TW68_CLMPL, 0x3c); /* 290 Y channel clamp level */
// tw_writeb(TW68_SYNCT, 0x38); /* 294 Sync amplitude */
tw_writeb(TW68_SYNCT, 0x30); /* 294 Sync amplitude */
tw_writeb(TW68_MISSCNT, 0x44); /* 298 Horiz sync, VCR detect sens */
tw_writeb(TW68_PCLAMP, 0x28); /* 29C Clamp pos from PLL sync */
/* Bit DETV of VCNTL1 helps sync multi cams/chip board */
tw_writeb(TW68_VCNTL1, 0x04); /* 2A0 */
tw_writeb(TW68_VCNTL2, 0); /* 2A4 */
tw_writeb(TW68_CKILL, 0x68); /* 2A8 Mfg specified reset val */
tw_writeb(TW68_COMB, 0x44); /* 2AC Mfg specified reset val */
tw_writeb(TW68_LDLY, 0x30); /* 2B0 Max positive luma delay */
tw_writeb(TW68_MISC1, 0x14); /* 2B4 Mfg specified reset val */
tw_writeb(TW68_LOOP, 0xa5); /* 2B8 Mfg specified reset val */
tw_writeb(TW68_MISC2, 0xe0); /* 2BC Enable colour killer */
tw_writeb(TW68_MVSN, 0); /* 2C0 */
tw_writeb(TW68_CLMD, 0x05); /* 2CC slice level auto, clamp med. */
tw_writeb(TW68_IDCNTL, 0); /* 2D0 Writing zero to this register
* selects NTSC ID detection,
* but doesn't change the
* sensitivity (which has a reset
* value of 1E). Since we are
* not doing auto-detection, it
* has no real effect */
tw_writeb(TW68_CLCNTL1, 0); /* 2D4 */
tw_writel(TW68_VBIC, 0x03); /* 010 */
tw_writel(TW68_CAP_CTL, 0x03); /* 040 Enable both even & odd flds */
tw_writel(TW68_DMAC, 0x2000); /* patch set had 0x2080 */
tw_writel(TW68_TESTREG, 0); /* 02C */
/*
* Some common boards, especially inexpensive single-chip models,
* use the GPIO bits 0-3 to control an on-board video-output mux.
* For these boards, we need to set up the GPIO register into
* "normal" mode, set bits 0-3 as output, and then set those bits
* zero.
*
* Eventually, it would be nice if we could identify these boards
* uniquely, and only do this initialisation if the board has been
* identify. For the moment, however, it shouldn't hurt anything
* to do these steps.
*/
tw_writel(TW68_GPIOC, 0); /* Set the GPIO to "normal", no ints */
tw_writel(TW68_GPOE, 0x0f); /* Set bits 0-3 to "output" */
tw_writel(TW68_GPDATA, 0); /* Set all bits to low state */
/* Initialize the device control structures */
mutex_init(&dev->lock);
spin_lock_init(&dev->slock);
/* Initialize any subsystems */
tw68_video_init1(dev);
tw68_vbi_init1(dev);
if (card_has_mpeg(dev))
tw68_ts_init1(dev);
tw68_input_init1(dev);
/* Do any other h/w early initialisation at this point */
tw68_hw_enable1(dev);
return 0;
}
/* late init (with i2c + irq) */
static int tw68_hw_enable2(struct tw68_dev *dev)
{
dprintk(DBG_FLOW, "%s: called\n", __func__);
#ifdef TW68_TESTING
dev->pci_irqmask |= TW68_I2C_INTS;
#endif
tw_setl(TW68_INTMASK, dev->pci_irqmask);
return 0;
}
static int tw68_hw_init2(struct tw68_dev *dev)
{
dprintk(DBG_FLOW, "%s: called\n", __func__);
tw68_video_init2(dev); /* initialise video function first */
tw68_tvaudio_init2(dev);/* audio next */
/* all other board-related things, incl. enabling interrupts */
tw68_hw_enable2(dev);
return 0;
}
/* shutdown */
static int tw68_hwfini(struct tw68_dev *dev)
{
dprintk(DBG_FLOW, "%s: called\n", __func__);
if (card_has_mpeg(dev))
tw68_ts_fini(dev);
tw68_input_fini(dev);
tw68_vbi_fini(dev);
tw68_tvaudio_fini(dev);
return 0;
}
static void __devinit must_configure_manually(void)
{
unsigned int i, p;
printk(KERN_WARNING
"tw68: <rant>\n"
"tw68: Congratulations! Your TV card vendor saved a few\n"
"tw68: cents for a eeprom, thus your pci board has no\n"
"tw68: subsystem ID and I can't identify it automatically\n"
"tw68: </rant>\n"
"tw68: I feel better now. Ok, here is the good news:\n"
"tw68: You can use the card=<nr> insmod option to specify\n"
"tw68: which board you have. The list:\n");
for (i = 0; i < tw68_bcount; i++) {
printk(KERN_WARNING "tw68: card=%d -> %-40.40s",
i, tw68_boards[i].name);
for (p = 0; tw68_pci_tbl[p].driver_data; p++) {
if (tw68_pci_tbl[p].driver_data != i)
continue;
printk(" %04x:%04x",
tw68_pci_tbl[p].subvendor,
tw68_pci_tbl[p].subdevice);
}
printk("\n");
}
}
static irqreturn_t tw68_irq(int irq, void *dev_id)
{
struct tw68_dev *dev = dev_id;
u32 status, orig;
int loop;
status = orig = tw_readl(TW68_INTSTAT) & dev->pci_irqmask;
/* Check if anything to do */
if (0 == status)
return IRQ_RETVAL(0); /* Nope - return */
for (loop = 0; loop < 10; loop++) {
if (status & dev->board_virqmask) /* video interrupt */
tw68_irq_video_done(dev, status);
#ifdef TW68_TESTING
if (status & TW68_I2C_INTS)
tw68_irq_i2c(dev, status);
#endif
status = tw_readl(TW68_INTSTAT) & dev->pci_irqmask;
if (0 == status)
goto out;
}
dprintk(DBG_UNEXPECTED, "%s: **** INTERRUPT NOT HANDLED - clearing mask"
" (orig 0x%08x, cur 0x%08x)",
dev->name, orig, tw_readl(TW68_INTSTAT));
dprintk(DBG_UNEXPECTED, "%s: pci_irqmask 0x%08x; board_virqmask "
"0x%08x ****\n", dev->name,
dev->pci_irqmask, dev->board_virqmask);
tw_clearl(TW68_INTMASK, dev->pci_irqmask);
out:
return IRQ_RETVAL(1);
}
int tw68_set_dmabits(struct tw68_dev *dev)
{
return 0;
}
static struct video_device *vdev_init(struct tw68_dev *dev,
struct video_device *template,
char *type)
{
struct video_device *vfd;
dprintk(DBG_FLOW, "%s: called\n", __func__);
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->minor = -1;
vfd->parent = &dev->pci->dev;
vfd->release = video_device_release;
/* vfd->debug = tw_video_debug; */
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
dev->name, type, tw68_boards[dev->board].name);
return vfd;
}
static void tw68_unregister_video(struct tw68_dev *dev)
{
dprintk(DBG_FLOW, "%s: called\n", __func__);
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;
}
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->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;
}
}
static void mpeg_ops_attach(struct tw68_mpeg_ops *ops,
struct tw68_dev *dev)
{
int err;
dprintk(DBG_FLOW, "%s: called\n", __func__);
if (NULL != dev->mops)
return;
if (tw68_boards[dev->board].mpeg != ops->type)
return;
err = ops->init(dev);
if (0 != err)
return;
dev->mops = ops;
}
static void mpeg_ops_detach(struct tw68_mpeg_ops *ops,
struct tw68_dev *dev)
{
if (NULL == dev->mops)
return;
if (dev->mops != ops)
return;
dev->mops->fini(dev);
dev->mops = NULL;
}
static int __devinit tw68_initdev(struct pci_dev *pci_dev,
const struct pci_device_id *pci_id)
{
struct tw68_dev *dev;
struct tw68_mpeg_ops *mops;
int err;
if (tw68_devcount == TW68_MAXBOARDS)
return -ENOMEM;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (NULL == dev)
return -ENOMEM;
err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
if (err)
goto fail0;
/* pci init */
dev->pci = pci_dev;
if (pci_enable_device(pci_dev)) {
err = -EIO;
goto fail1;
}
dev->nr = tw68_devcount;
sprintf(dev->name, "tw%x[%d]", pci_dev->device, dev->nr);
/* pci quirks */
if (pci_pci_problems) {
if (pci_pci_problems & PCIPCI_TRITON)
printk(KERN_INFO "%s: quirk: PCIPCI_TRITON\n",
dev->name);
if (pci_pci_problems & PCIPCI_NATOMA)
printk(KERN_INFO "%s: quirk: PCIPCI_NATOMA\n",
dev->name);
if (pci_pci_problems & PCIPCI_VIAETBF)
printk(KERN_INFO "%s: quirk: PCIPCI_VIAETBF\n",
dev->name);
if (pci_pci_problems & PCIPCI_VSFX)
printk(KERN_INFO "%s: quirk: PCIPCI_VSFX\n",
dev->name);
#ifdef PCIPCI_ALIMAGIK
if (pci_pci_problems & PCIPCI_ALIMAGIK) {
printk(KERN_INFO "%s: quirk: PCIPCI_ALIMAGIK "
"-- latency fixup\n", dev->name);
latency = 0x0A;
}
#endif
}
if (UNSET != latency) {
printk(KERN_INFO "%s: setting pci latency timer to %d\n",
dev->name, latency);
pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
}
/* 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: found at %s, rev: %d, irq: %d, "
"latency: %d, mmio: 0x%llx\n", dev->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: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail1;
}
switch (pci_id->device) {
case PCI_DEVICE_ID_6800: /* TW6800 */
dev->vdecoder = TW6800;
dev->board_virqmask = TW68_VID_INTS;
break;
case PCI_DEVICE_ID_6801: /* Video decoder for TW6802 */
dev->vdecoder = TW6801;
dev->board_virqmask = TW68_VID_INTS | TW68_VID_INTSX;
break;
case PCI_DEVICE_ID_6804: /* Video decoder for TW6805 */
dev->vdecoder = TW6804;
dev->board_virqmask = TW68_VID_INTS | TW68_VID_INTSX;
break;
default:
dev->vdecoder = TWXXXX; /* To be announced */
dev->board_virqmask = TW68_VID_INTS | TW68_VID_INTSX;
break;
}
/* board config */
dev->board = pci_id->driver_data;
if (card[dev->nr] >= 0 &&
card[dev->nr] < tw68_bcount)
dev->board = card[dev->nr];
if (TW68_BOARD_NOAUTO == dev->board) {
must_configure_manually();
dev->board = TW68_BOARD_UNKNOWN;
}
dev->autodetected = card[dev->nr] != dev->board;
dev->tuner_type = tw68_boards[dev->board].tuner_type;
dev->tuner_addr = tw68_boards[dev->board].tuner_addr;
dev->radio_type = tw68_boards[dev->board].radio_type;
dev->radio_addr = tw68_boards[dev->board].radio_addr;
dev->tda9887_conf = tw68_boards[dev->board].tda9887_conf;
if (UNSET != tuner[dev->nr])
dev->tuner_type = tuner[dev->nr];
printk(KERN_INFO "%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
dev->name, pci_dev->subsystem_vendor,
pci_dev->subsystem_device, tw68_boards[dev->board].name,
dev->board, dev->autodetected ?
"autodetected" : "insmod option");
/* get mmio */
if (!request_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0),
dev->name)) {
err = -EBUSY;
printk(KERN_ERR "%s: can't get MMIO memory @ 0x%llx\n",
dev->name,
(unsigned long long)pci_resource_start(pci_dev, 0));
goto fail1;
}
dev->lmmio = ioremap(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
dev->bmmio = (__u8 __iomem *)dev->lmmio;
if (NULL == dev->lmmio) {
err = -EIO;
printk(KERN_ERR "%s: can't ioremap() MMIO memory\n",
dev->name);
goto fail2;
}
/* initialize hardware #1 */
/* First, take care of anything unique to a particular card */
tw68_board_init1(dev);
/* Then do any initialisation wanted before interrupts are on */
tw68_hw_init1(dev);
/* get irq */
err = request_irq(pci_dev->irq, tw68_irq,
IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
if (err < 0) {
printk(KERN_ERR "%s: can't get IRQ %d\n",
dev->name, pci_dev->irq);
goto fail3;
}
#ifdef TW68_TESTING
dev->pci_irqmask |= TW68_SBDONE;
tw_setl(TW68_INTMASK, dev->pci_irqmask);
printk(KERN_INFO "Calling tw68_i2c_register\n");
/* Register the i2c bus */
tw68_i2c_register(dev);
#endif
/*
* Now do remainder of initialisation, first for
* things unique for this card, then for general board
*/
tw68_board_init2(dev);
tw68_hw_init2(dev);
#if 0
/* load i2c helpers */
if (card_is_empress(dev)) {
struct v4l2_subdev *sd =
v4l2_i2c_new_subdev(&dev->i2c_adap, "saa6752hs",
"saa6752hs", 0x20);
if (sd)
sd->grp_id = GRP_EMPRESS;
}
request_submodules(dev);
#endif
v4l2_prio_init(&dev->prio);
mutex_lock(&tw68_devlist_lock);
list_for_each_entry(mops, &mops_list, next)
mpeg_ops_attach(mops, dev);
list_add_tail(&dev->devlist, &tw68_devlist);
mutex_unlock(&tw68_devlist_lock);
/* check for signal */
tw68_irq_video_signalchange(dev);
#if 0
if (TUNER_ABSENT != dev->tuner_type)
tw_call_all(dev, core, s_standby, 0);
#endif
dev->video_dev = vdev_init(dev, &tw68_video_template, "video");
err = video_register_device(dev->video_dev, VFL_TYPE_GRABBER,
video_nr[dev->nr]);
if (err < 0) {
printk(KERN_INFO "%s: can't register video device\n",
dev->name);
goto fail4;
}
printk(KERN_INFO "%s: registered device video%d [v4l2]\n",
dev->name, dev->video_dev->num);
dev->vbi_dev = vdev_init(dev, &tw68_video_template, "vbi");
err = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->nr]);
if (err < 0) {
printk(KERN_INFO "%s: can't register vbi device\n",
dev->name);
goto fail4;
}
printk(KERN_INFO "%s: registered device vbi%d\n",
dev->name, dev->vbi_dev->num);
if (card_has_radio(dev)) {
dev->radio_dev = vdev_init(dev, &tw68_radio_template,
"radio");
err = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
radio_nr[dev->nr]);
if (err < 0) {
/* TODO - need to unregister vbi? */
printk(KERN_INFO "%s: can't register radio device\n",
dev->name);
goto fail4;
}
printk(KERN_INFO "%s: registered device radio%d\n",
dev->name, dev->radio_dev->num);
}
/* everything worked */
tw68_devcount++;
if (tw68_dmasound_init && !dev->dmasound.priv_data)
tw68_dmasound_init(dev);
return 0;
fail4:
tw68_unregister_video(dev);
#ifdef TW68_TESTING
tw68_i2c_unregister(dev);
#endif
free_irq(pci_dev->irq, dev);
fail3:
tw68_hwfini(dev);
iounmap(dev->lmmio);
fail2:
release_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
fail1:
v4l2_device_unregister(&dev->v4l2_dev);
fail0:
kfree(dev);
return err;
}
static void __devexit tw68_finidev(struct pci_dev *pci_dev)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct tw68_dev *dev =
container_of(v4l2_dev, struct tw68_dev, v4l2_dev);
struct tw68_mpeg_ops *mops;
dprintk(DBG_FLOW, "%s: called\n", __func__);
/* Release DMA sound modules if present */
if (tw68_dmasound_exit && dev->dmasound.priv_data)
tw68_dmasound_exit(dev);
/* shutdown subsystems */
tw68_hwfini(dev);
tw_clearl(TW68_DMAC, TW68_DMAP_EN | TW68_FIFO_EN);
tw_writel(TW68_INTMASK, 0);
/* unregister */
mutex_lock(&tw68_devlist_lock);
list_del(&dev->devlist);
list_for_each_entry(mops, &mops_list, next)
mpeg_ops_detach(mops, dev);
mutex_unlock(&tw68_devlist_lock);
tw68_devcount--;
#ifdef TW68_TESTING
tw68_i2c_unregister(dev);
#endif
tw68_unregister_video(dev);
/* the DMA sound modules should be unloaded before reaching
this, but just in case they are still present... */
if (dev->dmasound.priv_data != NULL) {
free_irq(pci_dev->irq, &dev->dmasound);
dev->dmasound.priv_data = NULL;
}
/* release resources */
free_irq(pci_dev->irq, dev);
iounmap(dev->lmmio);
release_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
v4l2_device_unregister(&dev->v4l2_dev);
/* free memory */
kfree(dev);
}
#ifdef CONFIG_PM
static int tw68_suspend(struct pci_dev *pci_dev , pm_message_t state)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct tw68_dev *dev = container_of(v4l2_dev,
struct tw68_dev, v4l2_dev);
dprintk(DBG_FLOW, "%s: called\n", __func__);
tw_clearl(TW68_DMAC, TW68_DMAP_EN | TW68_FIFO_EN);
dev->pci_irqmask &= ~TW68_VID_INTS;
tw_writel(TW68_INTMASK, 0);
dev->insuspend = 1;
synchronize_irq(pci_dev->irq);
/* Disable timeout timers - if we have active buffers, we will
fill them on resume*/
del_timer(&dev->video_q.timeout);
del_timer(&dev->vbi_q.timeout);
del_timer(&dev->ts_q.timeout);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
if (dev->remote)
tw68_ir_stop(dev);
#endif
pci_save_state(pci_dev);
pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
return 0;
}
static int tw68_resume(struct pci_dev *pci_dev)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct tw68_dev *dev = container_of(v4l2_dev,
struct tw68_dev, v4l2_dev);
unsigned long flags;
dprintk(DBG_FLOW, "%s: called\n", __func__);
pci_set_power_state(pci_dev, PCI_D0);
pci_restore_state(pci_dev);
/* Do things that are done in tw68_initdev ,
except of initializing memory structures.*/
tw68_board_init1(dev);
/* tw68_hw_init1 */
if (tw68_boards[dev->board].video_out)
tw68_videoport_init(dev);
if (card_has_mpeg(dev))
tw68_ts_init_hw(dev);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
if (dev->remote)
tw68_ir_start(dev, dev->remote);
#endif
tw68_hw_enable1(dev);
msleep(100);
tw68_board_init2(dev);
/*tw68_hw_init2*/
tw68_set_tvnorm_hw(dev);
tw68_tvaudio_setmute(dev);
/* tw68_tvaudio_setvolume(dev, dev->ctl_volume); */
tw68_tvaudio_init(dev);
tw68_irq_video_signalchange(dev);
/*resume unfinished buffer(s)*/
spin_lock_irqsave(&dev->slock, flags);
tw68_buffer_requeue(dev, &dev->video_q);
tw68_buffer_requeue(dev, &dev->vbi_q);
tw68_buffer_requeue(dev, &dev->ts_q);
/* FIXME: Disable DMA audio sound - temporary till proper support
is implemented*/
dev->dmasound.dma_running = 0;
/* start DMA now*/
dev->insuspend = 0;
smp_wmb();
tw68_set_dmabits(dev);
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
#endif
/* ----------------------------------------------------------- */
static struct pci_driver tw68_pci_driver = {
.name = "tw68",
.id_table = tw68_pci_tbl,
.probe = tw68_initdev,
.remove = __devexit_p(tw68_finidev),
#ifdef CONFIG_PM
.suspend = tw68_suspend,
.resume = tw68_resume
#endif
};
static int tw68_init(void)
{
if (core_debug & DBG_FLOW)
printk(KERN_DEBUG "%s: called\n", __func__);
INIT_LIST_HEAD(&tw68_devlist);
printk(KERN_INFO "tw68: v4l2 driver version %d.%d.%d loaded\n",
(TW68_VERSION_CODE >> 16) & 0xff,
(TW68_VERSION_CODE >> 8) & 0xff,
TW68_VERSION_CODE & 0xff);
#if 0
printk(KERN_INFO "tw68: snapshot date %04d-%02d-%02d\n",
SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
return pci_register_driver(&tw68_pci_driver);
}
static void module_cleanup(void)
{
if (core_debug & DBG_FLOW)
printk(KERN_DEBUG "%s: called\n", __func__);
pci_unregister_driver(&tw68_pci_driver);
}
module_init(tw68_init);
module_exit(module_cleanup);
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