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linux/drivers/media/video/saa7134/saa7134-core.c
Mauro Carvalho Chehab bdf1c98e42 V4L/DVB: saa7134: Add support for both positive and negative edge IRQ 
The code that enables IRQ for the Remote Controller on saa7134 is a little
messy: it is outside saa7134-input, it checks if RC is GPIO based, and
it mixes both serial raw decode with parallel reads from a hardware-based
IR decoder.

Also, currently, it doesn't allow to trigger both transition edges at GPIO16
and GPIO18 lines. A rework on the code is needed to provide a better way
to specify what saa7134-input needs, maybe even moving part of the code from
saa7134-core and saa7134-cards into saa7134-input.

Yet, as a large rework is happening at RC core, it is better to wait until
the core changes stablize, in order to rework saa7134 RC internals.While
this don't happen, let's just change the logic a little bit to allow
enabling IRQ to be generated on both edge transitions, in order to better
support pulse/space raw decoders.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-05-19 12:56:52 -03:00

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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(&buf->vb,0,0);
videobuf_dma_unmap(q, 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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