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linux/drivers/media/video/saa7134/saa7134-core.c
Hans Verkuil 0e0809a588 V4L/DVB: videobuf: add queue argument to videobuf_waiton() 
videobuf_waiton() must unlock and relock ext_lock if it has to wait.
For that to happen it needs the videobuf_queue pointer.

Don't attempt to unlock/relock q->ext_lock unless it was locked in the
first place.

vb->state has to be protected by a spinlock to be safe.

This patch is based on code from Mauro Carvalho Chehab <mchehab@redhat.com>.

[mchehab@redhat.com: add extra argument to a few missing places]
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:14 -02:00

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/*
*
* device driver for philips saa7134 based TV cards
* driver core
*
* (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
*
* 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/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 "saa7134-reg.h"
#include "saa7134.h"
MODULE_DESCRIPTION("v4l2 driver module for saa7130/34 based TV cards");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------------ */
static unsigned int irq_debug;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
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");
int saa7134_no_overlay=-1;
module_param_named(no_overlay, saa7134_no_overlay, int, 0444);
MODULE_PARM_DESC(no_overlay,"allow override overlay default (0 disables, 1 enables)"
" [some VIA/SIS chipsets are known to have problem with overlay]");
static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
static unsigned int tuner[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
static unsigned int card[] = {[0 ... (SAA7134_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");
DEFINE_MUTEX(saa7134_devlist_lock);
EXPORT_SYMBOL(saa7134_devlist_lock);
LIST_HEAD(saa7134_devlist);
EXPORT_SYMBOL(saa7134_devlist);
static LIST_HEAD(mops_list);
static unsigned int saa7134_devcount;
int (*saa7134_dmasound_init)(struct saa7134_dev *dev);
int (*saa7134_dmasound_exit)(struct saa7134_dev *dev);
#define dprintk(fmt, arg...) if (core_debug) \
printk(KERN_DEBUG "%s/core: " fmt, dev->name , ## arg)
void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
{
unsigned long mode,status;
if (!gpio_tracking)
return;
/* rising SAA7134_GPIO_GPRESCAN reads the status */
saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
mode = saa_readl(SAA7134_GPIO_GPMODE0 >> 2) & 0xfffffff;
status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
printk(KERN_DEBUG
"%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
dev->name, mode, (~mode) & status, mode & status, msg);
}
void saa7134_set_gpio(struct saa7134_dev *dev, int bit_no, int value)
{
u32 index, bitval;
index = 1 << bit_no;
switch (value) {
case 0: /* static value */
case 1: dprintk("setting GPIO%d to static %d\n", bit_no, value);
/* turn sync mode off if necessary */
if (index & 0x00c00000)
saa_andorb(SAA7134_VIDEO_PORT_CTRL6, 0x0f, 0x00);
if (value)
bitval = index;
else
bitval = 0;
saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, index, index);
saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, index, bitval);
break;
case 3: /* tristate */
dprintk("setting GPIO%d to tristate\n", bit_no);
saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, index, 0);
break;
}
}
/* ------------------------------------------------------------------ */
/* ----------------------------------------------------------- */
/* delayed request_module */
#if defined(CONFIG_MODULES) && defined(MODULE)
static void request_module_async(struct work_struct *work){
struct saa7134_dev* dev = container_of(work, struct saa7134_dev, request_module_wk);
if (card_is_empress(dev))
request_module("saa7134-empress");
if (card_is_dvb(dev))
request_module("saa7134-dvb");
if (alsa) {
if (dev->pci->device != PCI_DEVICE_ID_PHILIPS_SAA7130)
request_module("saa7134-alsa");
}
}
static void request_submodules(struct saa7134_dev *dev)
{
INIT_WORK(&dev->request_module_wk, request_module_async);
schedule_work(&dev->request_module_wk);
}
#else
#define request_submodules(dev)
#endif /* CONFIG_MODULES */
/* ------------------------------------------------------------------ */
/* nr of (saa7134-)pages for the given buffer size */
static int saa7134_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 saa7134_buffer_count(unsigned int size, unsigned int count)
{
unsigned int maxcount;
maxcount = 1024 / saa7134_buffer_pages(size);
if (count > maxcount)
count = maxcount;
return count;
}
int saa7134_buffer_startpage(struct saa7134_buf *buf)
{
return saa7134_buffer_pages(buf->vb.bsize) * buf->vb.i;
}
unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
{
unsigned long base;
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
base = saa7134_buffer_startpage(buf) * 4096;
base += dma->sglist[0].offset;
return base;
}
/* ------------------------------------------------------------------ */
int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
{
__le32 *cpu;
dma_addr_t dma_addr = 0;
cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
if (NULL == cpu)
return -ENOMEM;
pt->size = SAA7134_PGTABLE_SIZE;
pt->cpu = cpu;
pt->dma = dma_addr;
return 0;
}
int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
struct scatterlist *list, unsigned int length,
unsigned int startpage)
{
__le32 *ptr;
unsigned int i,p;
BUG_ON(NULL == pt || NULL == pt->cpu);
ptr = pt->cpu + startpage;
for (i = 0; i < length; i++, list++)
for (p = 0; p * 4096 < list->length; p++, ptr++)
*ptr = cpu_to_le32(sg_dma_address(list) - list->offset);
return 0;
}
void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
{
if (NULL == pt->cpu)
return;
pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
pt->cpu = NULL;
}
/* ------------------------------------------------------------------ */
void saa7134_dma_free(struct videobuf_queue *q,struct saa7134_buf *buf)
{
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
BUG_ON(in_interrupt());
videobuf_waiton(q, &buf->vb, 0, 0);
videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
/* ------------------------------------------------------------------ */
int saa7134_buffer_queue(struct saa7134_dev *dev,
struct saa7134_dmaqueue *q,
struct saa7134_buf *buf)
{
struct saa7134_buf *next = NULL;
assert_spin_locked(&dev->slock);
dprintk("buffer_queue %p\n",buf);
if (NULL == q->curr) {
if (!q->need_two) {
q->curr = buf;
buf->activate(dev,buf,NULL);
} else if (list_empty(&q->queue)) {
list_add_tail(&buf->vb.queue,&q->queue);
buf->vb.state = VIDEOBUF_QUEUED;
} else {
next = list_entry(q->queue.next,struct saa7134_buf,
vb.queue);
q->curr = buf;
buf->activate(dev,buf,next);
}
} else {
list_add_tail(&buf->vb.queue,&q->queue);
buf->vb.state = VIDEOBUF_QUEUED;
}
return 0;
}
void saa7134_buffer_finish(struct saa7134_dev *dev,
struct saa7134_dmaqueue *q,
unsigned int state)
{
assert_spin_locked(&dev->slock);
dprintk("buffer_finish %p\n",q->curr);
/* finish current buffer */
q->curr->vb.state = state;
do_gettimeofday(&q->curr->vb.ts);
wake_up(&q->curr->vb.done);
q->curr = NULL;
}
void saa7134_buffer_next(struct saa7134_dev *dev,
struct saa7134_dmaqueue *q)
{
struct saa7134_buf *buf,*next = NULL;
assert_spin_locked(&dev->slock);
BUG_ON(NULL != q->curr);
if (!list_empty(&q->queue)) {
/* activate next one from queue */
buf = list_entry(q->queue.next,struct saa7134_buf,vb.queue);
dprintk("buffer_next %p [prev=%p/next=%p]\n",
buf,q->queue.prev,q->queue.next);
list_del(&buf->vb.queue);
if (!list_empty(&q->queue))
next = list_entry(q->queue.next,struct saa7134_buf,
vb.queue);
q->curr = buf;
buf->activate(dev,buf,next);
dprintk("buffer_next #2 prev=%p/next=%p\n",
q->queue.prev,q->queue.next);
} else {
/* nothing to do -- just stop DMA */
dprintk("buffer_next %p\n",NULL);
saa7134_set_dmabits(dev);
del_timer(&q->timeout);
if (card_has_mpeg(dev))
if (dev->ts_started)
saa7134_ts_stop(dev);
}
}
void saa7134_buffer_timeout(unsigned long data)
{
struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue*)data;
struct saa7134_dev *dev = q->dev;
unsigned long flags;
spin_lock_irqsave(&dev->slock,flags);
/* try to reset the hardware (SWRST) */
saa_writeb(SAA7134_REGION_ENABLE, 0x00);
saa_writeb(SAA7134_REGION_ENABLE, 0x80);
saa_writeb(SAA7134_REGION_ENABLE, 0x00);
/* flag current buffer as failed,
try to start over with the next one. */
if (q->curr) {
dprintk("timeout on %p\n",q->curr);
saa7134_buffer_finish(dev,q,VIDEOBUF_ERROR);
}
saa7134_buffer_next(dev,q);
spin_unlock_irqrestore(&dev->slock,flags);
}
/* ------------------------------------------------------------------ */
int saa7134_set_dmabits(struct saa7134_dev *dev)
{
u32 split, task=0, ctrl=0, irq=0;
enum v4l2_field cap = V4L2_FIELD_ANY;
enum v4l2_field ov = V4L2_FIELD_ANY;
assert_spin_locked(&dev->slock);
if (dev->insuspend)
return 0;
/* video capture -- dma 0 + video task A */
if (dev->video_q.curr) {
task |= 0x01;
ctrl |= SAA7134_MAIN_CTRL_TE0;
irq |= SAA7134_IRQ1_INTE_RA0_1 |
SAA7134_IRQ1_INTE_RA0_0;
cap = dev->video_q.curr->vb.field;
}
/* video capture -- dma 1+2 (planar modes) */
if (dev->video_q.curr &&
dev->video_q.curr->fmt->planar) {
ctrl |= SAA7134_MAIN_CTRL_TE4 |
SAA7134_MAIN_CTRL_TE5;
}
/* screen overlay -- dma 0 + video task B */
if (dev->ovenable) {
task |= 0x10;
ctrl |= SAA7134_MAIN_CTRL_TE1;
ov = dev->ovfield;
}
/* vbi capture -- dma 0 + vbi task A+B */
if (dev->vbi_q.curr) {
task |= 0x22;
ctrl |= SAA7134_MAIN_CTRL_TE2 |
SAA7134_MAIN_CTRL_TE3;
irq |= SAA7134_IRQ1_INTE_RA0_7 |
SAA7134_IRQ1_INTE_RA0_6 |
SAA7134_IRQ1_INTE_RA0_5 |
SAA7134_IRQ1_INTE_RA0_4;
}
/* audio capture -- dma 3 */
if (dev->dmasound.dma_running) {
ctrl |= SAA7134_MAIN_CTRL_TE6;
irq |= SAA7134_IRQ1_INTE_RA3_1 |
SAA7134_IRQ1_INTE_RA3_0;
}
/* TS capture -- dma 5 */
if (dev->ts_q.curr) {
ctrl |= SAA7134_MAIN_CTRL_TE5;
irq |= SAA7134_IRQ1_INTE_RA2_1 |
SAA7134_IRQ1_INTE_RA2_0;
}
/* set task conditions + field handling */
if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
/* default config -- use full frames */
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
saa_writeb(SAA7134_FIELD_HANDLING(TASK_A), 0x02);
saa_writeb(SAA7134_FIELD_HANDLING(TASK_B), 0x02);
split = 0;
} else {
/* split fields between tasks */
if (V4L2_FIELD_TOP == cap) {
/* odd A, even B, repeat */
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
} else {
/* odd B, even A, repeat */
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
}
saa_writeb(SAA7134_FIELD_HANDLING(TASK_A), 0x01);
saa_writeb(SAA7134_FIELD_HANDLING(TASK_B), 0x01);
split = 1;
}
/* irqs */
saa_writeb(SAA7134_REGION_ENABLE, task);
saa_writel(SAA7134_IRQ1, irq);
saa_andorl(SAA7134_MAIN_CTRL,
SAA7134_MAIN_CTRL_TE0 |
SAA7134_MAIN_CTRL_TE1 |
SAA7134_MAIN_CTRL_TE2 |
SAA7134_MAIN_CTRL_TE3 |
SAA7134_MAIN_CTRL_TE4 |
SAA7134_MAIN_CTRL_TE5 |
SAA7134_MAIN_CTRL_TE6,
ctrl);
dprintk("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
task, ctrl, irq, split ? "no" : "yes");
return 0;
}
/* ------------------------------------------------------------------ */
/* IRQ handler + helpers */
static char *irqbits[] = {
"DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
"AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
"TRIG_ERR", "CONF_ERR", "LOAD_ERR",
"GPIO16", "GPIO18", "GPIO22", "GPIO23"
};
#define IRQBITS ARRAY_SIZE(irqbits)
static void print_irqstatus(struct saa7134_dev *dev, int loop,
unsigned long report, unsigned long status)
{
unsigned int i;
printk(KERN_DEBUG "%s/irq[%d,%ld]: r=0x%lx s=0x%02lx",
dev->name,loop,jiffies,report,status);
for (i = 0; i < IRQBITS; i++) {
if (!(report & (1 << i)))
continue;
printk(" %s",irqbits[i]);
}
if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
printk(" | RA0=%s,%s,%s,%ld",
(status & 0x40) ? "vbi" : "video",
(status & 0x20) ? "b" : "a",
(status & 0x10) ? "odd" : "even",
(status & 0x0f));
}
printk("\n");
}
static irqreturn_t saa7134_irq(int irq, void *dev_id)
{
struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
unsigned long report,status;
int loop, handled = 0;
if (dev->insuspend)
goto out;
for (loop = 0; loop < 10; loop++) {
report = saa_readl(SAA7134_IRQ_REPORT);
status = saa_readl(SAA7134_IRQ_STATUS);
/* If dmasound support is active and we get a sound report,
* mask out the report and let the saa7134-alsa module deal
* with it */
if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
(dev->dmasound.priv_data != NULL) )
{
if (irq_debug > 1)
printk(KERN_DEBUG "%s/irq: preserving DMA sound interrupt\n",
dev->name);
report &= ~SAA7134_IRQ_REPORT_DONE_RA3;
}
if (0 == report) {
if (irq_debug > 1)
printk(KERN_DEBUG "%s/irq: no (more) work\n",
dev->name);
goto out;
}
handled = 1;
saa_writel(SAA7134_IRQ_REPORT,report);
if (irq_debug)
print_irqstatus(dev,loop,report,status);
if ((report & SAA7134_IRQ_REPORT_RDCAP) ||
(report & SAA7134_IRQ_REPORT_INTL))
saa7134_irq_video_signalchange(dev);
if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
(status & 0x60) == 0)
saa7134_irq_video_done(dev,status);
if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
(status & 0x40) == 0x40)
saa7134_irq_vbi_done(dev,status);
if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
card_has_mpeg(dev))
saa7134_irq_ts_done(dev,status);
if (report & SAA7134_IRQ_REPORT_GPIO16) {
switch (dev->has_remote) {
case SAA7134_REMOTE_GPIO:
if (!dev->remote)
break;
if (dev->remote->mask_keydown & 0x10000) {
saa7134_input_irq(dev);
}
break;
case SAA7134_REMOTE_I2C:
break; /* FIXME: invoke I2C get_key() */
default: /* GPIO16 not used by IR remote */
break;
}
}
if (report & SAA7134_IRQ_REPORT_GPIO18) {
switch (dev->has_remote) {
case SAA7134_REMOTE_GPIO:
if (!dev->remote)
break;
if ((dev->remote->mask_keydown & 0x40000) ||
(dev->remote->mask_keyup & 0x40000)) {
saa7134_input_irq(dev);
}
break;
case SAA7134_REMOTE_I2C:
break; /* FIXME: invoke I2C get_key() */
default: /* GPIO18 not used by IR remote */
break;
}
}
}
if (10 == loop) {
print_irqstatus(dev,loop,report,status);
if (report & SAA7134_IRQ_REPORT_PE) {
/* disable all parity error */
printk(KERN_WARNING "%s/irq: looping -- "
"clearing PE (parity error!) enable bit\n",dev->name);
saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
} else if (report & SAA7134_IRQ_REPORT_GPIO16) {
/* disable gpio16 IRQ */
printk(KERN_WARNING "%s/irq: looping -- "
"clearing GPIO16 enable bit\n",dev->name);
saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_P);
saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_N);
} else if (report & SAA7134_IRQ_REPORT_GPIO18) {
/* disable gpio18 IRQs */
printk(KERN_WARNING "%s/irq: looping -- "
"clearing GPIO18 enable bit\n",dev->name);
saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_P);
saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_N);
} else {
/* disable all irqs */
printk(KERN_WARNING "%s/irq: looping -- "
"clearing all enable bits\n",dev->name);
saa_writel(SAA7134_IRQ1,0);
saa_writel(SAA7134_IRQ2,0);
}
}
out:
return IRQ_RETVAL(handled);
}
/* ------------------------------------------------------------------ */
/* early init (no i2c, no irq) */
static int saa7134_hw_enable1(struct saa7134_dev *dev)
{
/* RAM FIFO config */
saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
saa_writel(SAA7134_THRESHOULD, 0x02020202);
/* enable audio + video processing */
saa_writel(SAA7134_MAIN_CTRL,
SAA7134_MAIN_CTRL_VPLLE |
SAA7134_MAIN_CTRL_APLLE |
SAA7134_MAIN_CTRL_EXOSC |
SAA7134_MAIN_CTRL_EVFE1 |
SAA7134_MAIN_CTRL_EVFE2 |
SAA7134_MAIN_CTRL_ESFE |
SAA7134_MAIN_CTRL_EBDAC);
/*
* Initialize OSS _after_ enabling audio clock PLL and audio processing.
* OSS initialization writes to registers via the audio DSP; these
* writes will fail unless the audio clock has been started. At worst,
* audio will not work.
*/
/* enable peripheral devices */
saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
/* set vertical line numbering start (vbi needs this) */
saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
return 0;
}
static int saa7134_hwinit1(struct saa7134_dev *dev)
{
dprintk("hwinit1\n");
saa_writel(SAA7134_IRQ1, 0);
saa_writel(SAA7134_IRQ2, 0);
/* Clear any stale IRQ reports */
saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
mutex_init(&dev->lock);
spin_lock_init(&dev->slock);
saa7134_track_gpio(dev,"pre-init");
saa7134_video_init1(dev);
saa7134_vbi_init1(dev);
if (card_has_mpeg(dev))
saa7134_ts_init1(dev);
saa7134_input_init1(dev);
saa7134_hw_enable1(dev);
return 0;
}
/* late init (with i2c + irq) */
static int saa7134_hw_enable2(struct saa7134_dev *dev)
{
unsigned int irq2_mask;
/* enable IRQ's */
irq2_mask =
SAA7134_IRQ2_INTE_DEC3 |
SAA7134_IRQ2_INTE_DEC2 |
SAA7134_IRQ2_INTE_DEC1 |
SAA7134_IRQ2_INTE_DEC0 |
SAA7134_IRQ2_INTE_PE |
SAA7134_IRQ2_INTE_AR;
if (dev->has_remote == SAA7134_REMOTE_GPIO && dev->remote) {
if (dev->remote->mask_keydown & 0x10000)
irq2_mask |= SAA7134_IRQ2_INTE_GPIO16_N;
else { /* Allow enabling both IRQ edge triggers */
if (dev->remote->mask_keydown & 0x40000)
irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_P;
if (dev->remote->mask_keyup & 0x40000)
irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_N;
}
}
if (dev->has_remote == SAA7134_REMOTE_I2C) {
request_module("ir-kbd-i2c");
}
saa_writel(SAA7134_IRQ1, 0);
saa_writel(SAA7134_IRQ2, irq2_mask);
return 0;
}
static int saa7134_hwinit2(struct saa7134_dev *dev)
{
dprintk("hwinit2\n");
saa7134_video_init2(dev);
saa7134_tvaudio_init2(dev);
saa7134_hw_enable2(dev);
return 0;
}
/* shutdown */
static int saa7134_hwfini(struct saa7134_dev *dev)
{
dprintk("hwfini\n");
if (card_has_mpeg(dev))
saa7134_ts_fini(dev);
saa7134_input_fini(dev);
saa7134_vbi_fini(dev);
saa7134_tvaudio_fini(dev);
return 0;
}
static void __devinit must_configure_manually(void)
{
unsigned int i,p;
printk(KERN_WARNING
"saa7134: <rant>\n"
"saa7134: Congratulations! Your TV card vendor saved a few\n"
"saa7134: cents for a eeprom, thus your pci board has no\n"
"saa7134: subsystem ID and I can't identify it automatically\n"
"saa7134: </rant>\n"
"saa7134: I feel better now. Ok, here are the good news:\n"
"saa7134: You can use the card=<nr> insmod option to specify\n"
"saa7134: which board do you have. The list:\n");
for (i = 0; i < saa7134_bcount; i++) {
printk(KERN_WARNING "saa7134: card=%d -> %-40.40s",
i,saa7134_boards[i].name);
for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
if (saa7134_pci_tbl[p].driver_data != i)
continue;
printk(" %04x:%04x",
saa7134_pci_tbl[p].subvendor,
saa7134_pci_tbl[p].subdevice);
}
printk("\n");
}
}
static struct video_device *vdev_init(struct saa7134_dev *dev,
struct video_device *template,
char *type)
{
struct video_device *vfd;
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release;
vfd->debug = video_debug;
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
dev->name, type, saa7134_boards[dev->board].name);
video_set_drvdata(vfd, dev);
return vfd;
}
static void saa7134_unregister_video(struct saa7134_dev *dev)
{
if (dev->video_dev) {
if (video_is_registered(dev->video_dev))
video_unregister_device(dev->video_dev);
else
video_device_release(dev->video_dev);
dev->video_dev = NULL;
}
if (dev->vbi_dev) {
if (video_is_registered(dev->vbi_dev))
video_unregister_device(dev->vbi_dev);
else
video_device_release(dev->vbi_dev);
dev->vbi_dev = NULL;
}
if (dev->radio_dev) {
if (video_is_registered(dev->radio_dev))
video_unregister_device(dev->radio_dev);
else
video_device_release(dev->radio_dev);
dev->radio_dev = NULL;
}
}
static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
struct saa7134_dev *dev)
{
int err;
if (NULL != dev->mops)
return;
if (saa7134_boards[dev->board].mpeg != ops->type)
return;
err = ops->init(dev);
if (0 != err)
return;
dev->mops = ops;
}
static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
struct saa7134_dev *dev)
{
if (NULL == dev->mops)
return;
if (dev->mops != ops)
return;
dev->mops->fini(dev);
dev->mops = NULL;
}
static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
const struct pci_device_id *pci_id)
{
struct saa7134_dev *dev;
struct saa7134_mpeg_ops *mops;
int err;
if (saa7134_devcount == SAA7134_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 = saa7134_devcount;
sprintf(dev->name,"saa%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 (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL)) {
printk(KERN_INFO "%s: quirk: this driver and your "
"chipset may not work together"
" in overlay mode.\n",dev->name);
if (!saa7134_no_overlay) {
printk(KERN_INFO "%s: quirk: overlay "
"mode will be disabled.\n",
dev->name);
saa7134_no_overlay = 1;
} else {
printk(KERN_INFO "%s: quirk: overlay "
"mode will be forced. Use this"
" option at your own risk.\n",
dev->name);
}
}
}
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;
}
/* board config */
dev->board = pci_id->driver_data;
if (card[dev->nr] >= 0 &&
card[dev->nr] < saa7134_bcount)
dev->board = card[dev->nr];
if (SAA7134_BOARD_NOAUTO == dev->board) {
must_configure_manually();
dev->board = SAA7134_BOARD_UNKNOWN;
}
dev->autodetected = card[dev->nr] != dev->board;
dev->tuner_type = saa7134_boards[dev->board].tuner_type;
dev->tuner_addr = saa7134_boards[dev->board].tuner_addr;
dev->radio_type = saa7134_boards[dev->board].radio_type;
dev->radio_addr = saa7134_boards[dev->board].radio_addr;
dev->tda9887_conf = saa7134_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,saa7134_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 */
saa7134_board_init1(dev);
saa7134_hwinit1(dev);
/* get irq */
err = request_irq(pci_dev->irq, saa7134_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;
}
/* wait a bit, register i2c bus */
msleep(100);
saa7134_i2c_register(dev);
saa7134_board_init2(dev);
saa7134_hwinit2(dev);
/* load i2c helpers */
if (card_is_empress(dev)) {
struct v4l2_subdev *sd =
v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap,
"saa6752hs", "saa6752hs",
saa7134_boards[dev->board].empress_addr, NULL);
if (sd)
sd->grp_id = GRP_EMPRESS;
}
if (saa7134_boards[dev->board].rds_addr) {
struct v4l2_subdev *sd;
sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
&dev->i2c_adap, "saa6588", "saa6588",
0, I2C_ADDRS(saa7134_boards[dev->board].rds_addr));
if (sd) {
printk(KERN_INFO "%s: found RDS decoder\n", dev->name);
dev->has_rds = 1;
}
}
request_submodules(dev);
v4l2_prio_init(&dev->prio);
mutex_lock(&saa7134_devlist_lock);
list_for_each_entry(mops, &mops_list, next)
mpeg_ops_attach(mops, dev);
list_add_tail(&dev->devlist, &saa7134_devlist);
mutex_unlock(&saa7134_devlist_lock);
/* check for signal */
saa7134_irq_video_signalchange(dev);
if (TUNER_ABSENT != dev->tuner_type)
saa_call_all(dev, core, s_power, 0);
/* register v4l devices */
if (saa7134_no_overlay > 0)
printk(KERN_INFO "%s: Overlay support disabled.\n", dev->name);
dev->video_dev = vdev_init(dev,&saa7134_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 %s [v4l2]\n",
dev->name, video_device_node_name(dev->video_dev));
dev->vbi_dev = vdev_init(dev, &saa7134_video_template, "vbi");
err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
vbi_nr[dev->nr]);
if (err < 0)
goto fail4;
printk(KERN_INFO "%s: registered device %s\n",
dev->name, video_device_node_name(dev->vbi_dev));
if (card_has_radio(dev)) {
dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
radio_nr[dev->nr]);
if (err < 0)
goto fail4;
printk(KERN_INFO "%s: registered device %s\n",
dev->name, video_device_node_name(dev->radio_dev));
}
/* everything worked */
saa7134_devcount++;
if (saa7134_dmasound_init && !dev->dmasound.priv_data)
saa7134_dmasound_init(dev);
return 0;
fail4:
saa7134_unregister_video(dev);
saa7134_i2c_unregister(dev);
free_irq(pci_dev->irq, dev);
fail3:
saa7134_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 saa7134_finidev(struct pci_dev *pci_dev)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
struct saa7134_mpeg_ops *mops;
/* Release DMA sound modules if present */
if (saa7134_dmasound_exit && dev->dmasound.priv_data) {
saa7134_dmasound_exit(dev);
}
/* debugging ... */
if (irq_debug) {
u32 report = saa_readl(SAA7134_IRQ_REPORT);
u32 status = saa_readl(SAA7134_IRQ_STATUS);
print_irqstatus(dev,42,report,status);
}
/* disable peripheral devices */
saa_writeb(SAA7134_SPECIAL_MODE,0);
/* shutdown hardware */
saa_writel(SAA7134_IRQ1,0);
saa_writel(SAA7134_IRQ2,0);
saa_writel(SAA7134_MAIN_CTRL,0);
/* shutdown subsystems */
saa7134_hwfini(dev);
/* unregister */
mutex_lock(&saa7134_devlist_lock);
list_del(&dev->devlist);
list_for_each_entry(mops, &mops_list, next)
mpeg_ops_detach(mops, dev);
mutex_unlock(&saa7134_devlist_lock);
saa7134_devcount--;
saa7134_i2c_unregister(dev);
saa7134_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
/* resends a current buffer in queue after resume */
static int saa7134_buffer_requeue(struct saa7134_dev *dev,
struct saa7134_dmaqueue *q)
{
struct saa7134_buf *buf, *next;
assert_spin_locked(&dev->slock);
buf = q->curr;
next = buf;
dprintk("buffer_requeue\n");
if (!buf)
return 0;
dprintk("buffer_requeue : resending active buffers \n");
if (!list_empty(&q->queue))
next = list_entry(q->queue.next, struct saa7134_buf,
vb.queue);
buf->activate(dev, buf, next);
return 0;
}
static int saa7134_suspend(struct pci_dev *pci_dev , pm_message_t state)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
/* disable overlay - apps should enable it explicitly on resume*/
dev->ovenable = 0;
/* Disable interrupts, DMA, and rest of the chip*/
saa_writel(SAA7134_IRQ1, 0);
saa_writel(SAA7134_IRQ2, 0);
saa_writel(SAA7134_MAIN_CTRL, 0);
dev->insuspend = 1;
synchronize_irq(pci_dev->irq);
/* ACK interrupts once more, just in case,
since the IRQ handler won't ack them anymore*/
saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
/* 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 (dev->remote)
saa7134_ir_stop(dev);
pci_save_state(pci_dev);
pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
return 0;
}
static int saa7134_resume(struct pci_dev *pci_dev)
{
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
unsigned long flags;
pci_set_power_state(pci_dev, PCI_D0);
pci_restore_state(pci_dev);
/* Do things that are done in saa7134_initdev ,
except of initializing memory structures.*/
saa7134_board_init1(dev);
/* saa7134_hwinit1 */
if (saa7134_boards[dev->board].video_out)
saa7134_videoport_init(dev);
if (card_has_mpeg(dev))
saa7134_ts_init_hw(dev);
if (dev->remote)
saa7134_ir_start(dev);
saa7134_hw_enable1(dev);
msleep(100);
saa7134_board_init2(dev);
/*saa7134_hwinit2*/
saa7134_set_tvnorm_hw(dev);
saa7134_tvaudio_setmute(dev);
saa7134_tvaudio_setvolume(dev, dev->ctl_volume);
saa7134_tvaudio_init(dev);
saa7134_tvaudio_do_scan(dev);
saa7134_enable_i2s(dev);
saa7134_hw_enable2(dev);
saa7134_irq_video_signalchange(dev);
/*resume unfinished buffer(s)*/
spin_lock_irqsave(&dev->slock, flags);
saa7134_buffer_requeue(dev, &dev->video_q);
saa7134_buffer_requeue(dev, &dev->vbi_q);
saa7134_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();
saa7134_set_dmabits(dev);
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
#endif
/* ----------------------------------------------------------- */
int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
{
struct saa7134_dev *dev;
mutex_lock(&saa7134_devlist_lock);
list_for_each_entry(dev, &saa7134_devlist, devlist)
mpeg_ops_attach(ops, dev);
list_add_tail(&ops->next,&mops_list);
mutex_unlock(&saa7134_devlist_lock);
return 0;
}
void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
{
struct saa7134_dev *dev;
mutex_lock(&saa7134_devlist_lock);
list_del(&ops->next);
list_for_each_entry(dev, &saa7134_devlist, devlist)
mpeg_ops_detach(ops, dev);
mutex_unlock(&saa7134_devlist_lock);
}
EXPORT_SYMBOL(saa7134_ts_register);
EXPORT_SYMBOL(saa7134_ts_unregister);
/* ----------------------------------------------------------- */
static struct pci_driver saa7134_pci_driver = {
.name = "saa7134",
.id_table = saa7134_pci_tbl,
.probe = saa7134_initdev,
.remove = __devexit_p(saa7134_finidev),
#ifdef CONFIG_PM
.suspend = saa7134_suspend,
.resume = saa7134_resume
#endif
};
static int __init saa7134_init(void)
{
INIT_LIST_HEAD(&saa7134_devlist);
printk(KERN_INFO "saa7130/34: v4l2 driver version %d.%d.%d loaded\n",
(SAA7134_VERSION_CODE >> 16) & 0xff,
(SAA7134_VERSION_CODE >> 8) & 0xff,
SAA7134_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
printk(KERN_INFO "saa7130/34: snapshot date %04d-%02d-%02d\n",
SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
return pci_register_driver(&saa7134_pci_driver);
}
static void __exit saa7134_fini(void)
{
pci_unregister_driver(&saa7134_pci_driver);
}
module_init(saa7134_init);
module_exit(saa7134_fini);
/* ----------------------------------------------------------- */
EXPORT_SYMBOL(saa7134_set_gpio);
EXPORT_SYMBOL(saa7134_boards);
/* ----------------- for the DMA sound modules --------------- */
EXPORT_SYMBOL(saa7134_dmasound_init);
EXPORT_SYMBOL(saa7134_dmasound_exit);
EXPORT_SYMBOL(saa7134_pgtable_free);
EXPORT_SYMBOL(saa7134_pgtable_build);
EXPORT_SYMBOL(saa7134_pgtable_alloc);
EXPORT_SYMBOL(saa7134_set_dmabits);
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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