Logo Search packages:      
Sourcecode: linux version File versions  Download package

saa7134-core.c

/*
 *
 * 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 = 0;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");

static unsigned int core_debug = 0;
module_param(core_debug, int, 0644);
MODULE_PARM_DESC(core_debug,"enable debug messages [core]");

static unsigned int gpio_tracking = 0;
module_param(gpio_tracking, int, 0644);
MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");

static unsigned int alsa = 0;
module_param(alsa, int, 0644);
MODULE_PARM_DESC(alsa,"enable ALSA DMA sound [dmasound]");

static unsigned int oss = 0;
module_param(oss, int, 0644);
MODULE_PARM_DESC(oss,"enable OSS 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");

static DEFINE_MUTEX(devlist_lock);
LIST_HEAD(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;
      }
}

int saa7134_tuner_callback(void *ptr, int command, int arg)
{
      u8 sync_control;
      struct saa7134_dev *dev = ptr;

      switch (dev->tuner_type) {
      case TUNER_PHILIPS_TDA8290:
            switch (command) {
            case 0: /* switch LNA gain through GPIO 22*/
                  saa7134_set_gpio(dev, 22, arg) ;
                  break;
            case 1: /* vsync output at GPIO22. 50 / 60Hz */
                  dprintk("setting GPIO22 to vsync %d\n", arg);
                  saa_andorb(SAA7134_VIDEO_PORT_CTRL3, 0x80, 0x80);
                  saa_andorb(SAA7134_VIDEO_PORT_CTRL6, 0x0f, 0x03);
                  if (arg == 1)
                        sync_control = 11;
                  else
                        sync_control = 17;
                  saa_writeb(SAA7134_VGATE_START, sync_control);
                  saa_writeb(SAA7134_VGATE_STOP, sync_control + 1);
                  saa_andorb(SAA7134_MISC_VGATE_MSB, 0x03, 0x00);
                  break;
            default:
                  return -EINVAL;
            }
            break;
      default:
            return -ENODEV;
      }
      return 0;
}

/* ------------------------------------------------------------------ */


/* ----------------------------------------------------------- */
/* 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)
            request_module("saa7134-alsa");
      if (oss)
            request_module("saa7134-oss");
}

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;

      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 = STATE_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 = STATE_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 = STATE_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);
      }
}

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,STATE_ERROR);
      }
      saa7134_buffer_next(dev,q);
      spin_unlock_irqrestore(&dev->slock,flags);
}

/* resends a current buffer in queue after resume */

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;
}

/* ------------------------------------------------------------------ */

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_3 |
                  SAA7134_IRQ1_INTE_RA2_2 |
                  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);
            } 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);
            } 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);
      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;
            else if (dev->remote->mask_keydown & 0x40000)
                  irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
            else if (dev->remote->mask_keyup & 0x40000)
                  irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
      }

      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->minor   = -1;
      vfd->dev     = &dev->pci->dev;
      vfd->release = video_device_release;
      snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
             dev->name, type, saa7134_boards[dev->board].name);
      return vfd;
}

static void saa7134_unregister_video(struct saa7134_dev *dev)
{
      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 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;

      dev = kzalloc(sizeof(*dev),GFP_KERNEL);
      if (NULL == dev)
            return -ENOMEM;

      /* pci init */
      dev->pci = pci_dev;
      if (pci_enable_device(pci_dev)) {
            err = -EIO;
            goto 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_32BIT_MASK)) {
            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->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), 0x1000);
      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);

      /* initialize hardware #2 */
      saa7134_board_init2(dev);
      saa7134_hwinit2(dev);

      /* load i2c helpers */
      if (TUNER_ABSENT != dev->tuner_type)
            request_module("tuner");
      if (card_is_empress(dev)) {
            request_module("saa6752hs");
      }

      request_submodules(dev);

      v4l2_prio_init(&dev->prio);

      /* register v4l devices */
      if (saa7134_no_overlay <= 0) {
            saa7134_video_template.type |= VID_TYPE_OVERLAY;
      } else {
            printk("%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 video%d [v4l2]\n",
             dev->name,dev->video_dev->minor & 0x1f);

      dev->vbi_dev = vdev_init(dev,&saa7134_vbi_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 vbi%d\n",
             dev->name,dev->vbi_dev->minor & 0x1f);

      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 radio%d\n",
                   dev->name,dev->radio_dev->minor & 0x1f);
      }

      /* everything worked */
      pci_set_drvdata(pci_dev,dev);
      saa7134_devcount++;

      mutex_lock(&devlist_lock);
      list_for_each_entry(mops, &mops_list, next)
            mpeg_ops_attach(mops, dev);
      list_add_tail(&dev->devlist,&saa7134_devlist);
      mutex_unlock(&devlist_lock);

      /* check for signal */
      saa7134_irq_video_signalchange(dev);

      if (saa7134_dmasound_init && !dev->dmasound.priv_data) {
            saa7134_dmasound_init(dev);
      }

      if (TUNER_ABSENT != dev->tuner_type)
            saa7134_i2c_call_clients(dev, TUNER_SET_STANDBY, NULL);

      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:
      kfree(dev);
      return err;
}

static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
{
      struct saa7134_dev *dev = pci_get_drvdata(pci_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(&devlist_lock);
      list_del(&dev->devlist);
      list_for_each_entry(mops, &mops_list, next)
            mpeg_ops_detach(mops, dev);
      mutex_unlock(&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));

      pci_set_drvdata(pci_dev, NULL);

      /* free memory */
      kfree(dev);
}

#ifdef CONFIG_PM
static int saa7134_suspend(struct pci_dev *pci_dev , pm_message_t state)
{

      struct saa7134_dev *dev = pci_get_drvdata(pci_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);

      synchronize_irq(pci_dev->irq);
      dev->insuspend = 1;

      /* 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_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
      pci_save_state(pci_dev);

    return 0;
}

static int saa7134_resume(struct pci_dev *pci_dev)
{
      struct saa7134_dev *dev = pci_get_drvdata(pci_dev);
      unsigned long flags;

      pci_restore_state(pci_dev);
      pci_set_power_state(pci_dev, PCI_D0);

      /* 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, dev->remote);
      saa7134_hw_enable1(dev);


      saa7134_board_init2(dev);

      /*saa7134_hwinit2*/
      saa7134_set_tvnorm_hw(dev);
      saa7134_tvaudio_setmute(dev);
      saa7134_tvaudio_setvolume(dev, dev->ctl_volume);
      saa7134_tvaudio_do_scan(dev);
      saa7134_enable_i2s(dev);
      saa7134_hw_enable2(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;
      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(&devlist_lock);
      list_for_each_entry(dev, &saa7134_devlist, devlist)
            mpeg_ops_attach(ops, dev);
      list_add_tail(&ops->next,&mops_list);
      mutex_unlock(&devlist_lock);
      return 0;
}

void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
{
      struct saa7134_dev *dev;

      mutex_lock(&devlist_lock);
      list_del(&ops->next);
      list_for_each_entry(dev, &saa7134_devlist, devlist)
            mpeg_ops_detach(ops, dev);
      mutex_unlock(&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 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 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_i2c_call_clients);
EXPORT_SYMBOL(saa7134_devlist);
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:
 */

Generated by  Doxygen 1.6.0   Back to index