1 files changed, 929 insertions, 0 deletions

diff --git a/drivers/media/pci/cx88/cx88-mpeg.c b/drivers/media/pci/cx88/cx88-mpeg.c
new file mode 100644
index 000000000000..cd5386ee210c
--- /dev/null
+++ b/drivers/media/pci/cx88/cx88-mpeg.c
@@ -0,0 +1,929 @@
+/*
+ *
+ *  Support for the mpeg transport stream transfers
+ *  PCI function #2 of the cx2388x.
+ *
+ *    (c) 2004 Jelle Foks <jelle@foks.us>
+ *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
+ *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
+ *
+ *  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/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <asm/delay.h>
+
+#include "cx88.h"
+
+/* ------------------------------------------------------------------ */
+
+MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
+MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
+MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
+MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(CX88_VERSION);
+
+static unsigned int debug;
+module_param(debug,int,0644);
+MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
+
+#define dprintk(level,fmt, arg...)      if (debug >= level) \
+        printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
+
+#define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
+        printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
+
+#if defined(CONFIG_MODULES) && defined(MODULE)
+static void request_module_async(struct work_struct *work)
+{
+        struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
+
+        if (dev->core->board.mpeg & CX88_MPEG_DVB)
+                request_module("cx88-dvb");
+        if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
+                request_module("cx88-blackbird");
+}
+
+static void request_modules(struct cx8802_dev *dev)
+{
+        INIT_WORK(&dev->request_module_wk, request_module_async);
+        schedule_work(&dev->request_module_wk);
+}
+
+static void flush_request_modules(struct cx8802_dev *dev)
+{
+        flush_work_sync(&dev->request_module_wk);
+}
+#else
+#define request_modules(dev)
+#define flush_request_modules(dev)
+#endif /* CONFIG_MODULES */
+
+
+static LIST_HEAD(cx8802_devlist);
+static DEFINE_MUTEX(cx8802_mutex);
+/* ------------------------------------------------------------------ */
+
+static int cx8802_start_dma(struct cx8802_dev    *dev,
+                            struct cx88_dmaqueue *q,
+                            struct cx88_buffer   *buf)
+{
+        struct cx88_core *core = dev->core;
+
+        dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
+                buf->vb.width, buf->vb.height, buf->vb.field);
+
+        /* setup fifo + format */
+        cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
+                                dev->ts_packet_size, buf->risc.dma);
+
+        /* write TS length to chip */
+        cx_write(MO_TS_LNGTH, buf->vb.width);
+
+        /* FIXME: this needs a review.
+         * also: move to cx88-blackbird + cx88-dvb source files? */
+
+        dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
+
+        if ( (core->active_type_id == CX88_MPEG_DVB) &&
+                (core->board.mpeg & CX88_MPEG_DVB) ) {
+
+                dprintk( 1, "cx8802_start_dma doing .dvb\n");
+                /* negedge driven & software reset */
+                cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
+                udelay(100);
+                cx_write(MO_PINMUX_IO, 0x00);
+                cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
+                switch (core->boardnr) {
+                case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
+                case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
+                case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
+                case CX88_BOARD_PCHDTV_HD5500:
+                        cx_write(TS_SOP_STAT, 1<<13);
+                        break;
+                case CX88_BOARD_SAMSUNG_SMT_7020:
+                        cx_write(TS_SOP_STAT, 0x00);
+                        break;
+                case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
+                case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
+                        cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
+                        udelay(100);
+                        break;
+                case CX88_BOARD_HAUPPAUGE_HVR1300:
+                        /* Enable MPEG parallel IO and video signal pins */
+                        cx_write(MO_PINMUX_IO, 0x88);
+                        cx_write(TS_SOP_STAT, 0);
+                        cx_write(TS_VALERR_CNTRL, 0);
+                        break;
+                case CX88_BOARD_PINNACLE_PCTV_HD_800i:
+                        /* Enable MPEG parallel IO and video signal pins */
+                        cx_write(MO_PINMUX_IO, 0x88);
+                        cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
+                        dev->ts_gen_cntrl = 5;
+                        cx_write(TS_SOP_STAT, 0);
+                        cx_write(TS_VALERR_CNTRL, 0);
+                        udelay(100);
+                        break;
+                default:
+                        cx_write(TS_SOP_STAT, 0x00);
+                        break;
+                }
+                cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
+                udelay(100);
+        } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
+                (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
+                dprintk( 1, "cx8802_start_dma doing .blackbird\n");
+                cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
+
+                cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
+                udelay(100);
+
+                cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
+                cx_write(TS_VALERR_CNTRL, 0x2000);
+
+                cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
+                udelay(100);
+        } else {
+                printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
+                        core->board.mpeg );
+                return -EINVAL;
+        }
+
+        /* reset counter */
+        cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
+        q->count = 1;
+
+        /* enable irqs */
+        dprintk( 1, "setting the interrupt mask\n" );
+        cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
+        cx_set(MO_TS_INTMSK,  0x1f0011);
+
+        /* start dma */
+        cx_set(MO_DEV_CNTRL2, (1<<5));
+        cx_set(MO_TS_DMACNTRL, 0x11);
+        return 0;
+}
+
+static int cx8802_stop_dma(struct cx8802_dev *dev)
+{
+        struct cx88_core *core = dev->core;
+        dprintk( 1, "cx8802_stop_dma\n" );
+
+        /* stop dma */
+        cx_clear(MO_TS_DMACNTRL, 0x11);
+
+        /* disable irqs */
+        cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
+        cx_clear(MO_TS_INTMSK, 0x1f0011);
+
+        /* Reset the controller */
+        cx_write(TS_GEN_CNTRL, 0xcd);
+        return 0;
+}
+
+static int cx8802_restart_queue(struct cx8802_dev    *dev,
+                                struct cx88_dmaqueue *q)
+{
+        struct cx88_buffer *buf;
+
+        dprintk( 1, "cx8802_restart_queue\n" );
+        if (list_empty(&q->active))
+        {
+                struct cx88_buffer *prev;
+                prev = NULL;
+
+                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
+
+                for (;;) {
+                        if (list_empty(&q->queued))
+                                return 0;
+                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
+                        if (NULL == prev) {
+                                list_del(&buf->vb.queue);
+                                list_add_tail(&buf->vb.queue,&q->active);
+                                cx8802_start_dma(dev, q, buf);
+                                buf->vb.state = VIDEOBUF_ACTIVE;
+                                buf->count    = q->count++;
+                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+                                dprintk(1,"[%p/%d] restart_queue - first active\n",
+                                        buf,buf->vb.i);
+
+                        } else if (prev->vb.width  == buf->vb.width  &&
+                                   prev->vb.height == buf->vb.height &&
+                                   prev->fmt       == buf->fmt) {
+                                list_del(&buf->vb.queue);
+                                list_add_tail(&buf->vb.queue,&q->active);
+                                buf->vb.state = VIDEOBUF_ACTIVE;
+                                buf->count    = q->count++;
+                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
+                                        buf,buf->vb.i);
+                        } else {
+                                return 0;
+                        }
+                        prev = buf;
+                }
+                return 0;
+        }
+
+        buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
+        dprintk(2,"restart_queue [%p/%d]: restart dma\n",
+                buf, buf->vb.i);
+        cx8802_start_dma(dev, q, buf);
+        list_for_each_entry(buf, &q->active, vb.queue)
+                buf->count = q->count++;
+        mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+        return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
+                        struct cx88_buffer *buf, enum v4l2_field field)
+{
+        int size = dev->ts_packet_size * dev->ts_packet_count;
+        struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
+        int rc;
+
+        dprintk(1, "%s: %p\n", __func__, buf);
+        if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
+                return -EINVAL;
+
+        if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+                buf->vb.width  = dev->ts_packet_size;
+                buf->vb.height = dev->ts_packet_count;
+                buf->vb.size   = size;
+                buf->vb.field  = field /*V4L2_FIELD_TOP*/;
+
+                if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
+                        goto fail;
+                cx88_risc_databuffer(dev->pci, &buf->risc,
+                                     dma->sglist,
+                                     buf->vb.width, buf->vb.height, 0);
+        }
+        buf->vb.state = VIDEOBUF_PREPARED;
+        return 0;
+
+ fail:
+        cx88_free_buffer(q,buf);
+        return rc;
+}
+
+void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
+{
+        struct cx88_buffer    *prev;
+        struct cx88_dmaqueue  *cx88q = &dev->mpegq;
+
+        dprintk( 1, "cx8802_buf_queue\n" );
+        /* add jump to stopper */
+        buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
+        buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
+
+        if (list_empty(&cx88q->active)) {
+                dprintk( 1, "queue is empty - first active\n" );
+                list_add_tail(&buf->vb.queue,&cx88q->active);
+                cx8802_start_dma(dev, cx88q, buf);
+                buf->vb.state = VIDEOBUF_ACTIVE;
+                buf->count    = cx88q->count++;
+                mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
+                dprintk(1,"[%p/%d] %s - first active\n",
+                        buf, buf->vb.i, __func__);
+
+        } else {
+                dprintk( 1, "queue is not empty - append to active\n" );
+                prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
+                list_add_tail(&buf->vb.queue,&cx88q->active);
+                buf->vb.state = VIDEOBUF_ACTIVE;
+                buf->count    = cx88q->count++;
+                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+                dprintk( 1, "[%p/%d] %s - append to active\n",
+                        buf, buf->vb.i, __func__);
+        }
+}
+
+/* ----------------------------------------------------------- */
+
+static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
+{
+        struct cx88_dmaqueue *q = &dev->mpegq;
+        struct cx88_buffer *buf;
+        unsigned long flags;
+
+        spin_lock_irqsave(&dev->slock,flags);
+        while (!list_empty(&q->active)) {
+                buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
+                list_del(&buf->vb.queue);
+                buf->vb.state = VIDEOBUF_ERROR;
+                wake_up(&buf->vb.done);
+                dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
+                        buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
+        }
+        if (restart)
+        {
+                dprintk(1, "restarting queue\n" );
+                cx8802_restart_queue(dev,q);
+        }
+        spin_unlock_irqrestore(&dev->slock,flags);
+}
+
+void cx8802_cancel_buffers(struct cx8802_dev *dev)
+{
+        struct cx88_dmaqueue *q = &dev->mpegq;
+
+        dprintk( 1, "cx8802_cancel_buffers" );
+        del_timer_sync(&q->timeout);
+        cx8802_stop_dma(dev);
+        do_cancel_buffers(dev,"cancel",0);
+}
+
+static void cx8802_timeout(unsigned long data)
+{
+        struct cx8802_dev *dev = (struct cx8802_dev*)data;
+
+        dprintk(1, "%s\n",__func__);
+
+        if (debug)
+                cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
+        cx8802_stop_dma(dev);
+        do_cancel_buffers(dev,"timeout",1);
+}
+
+static const char * cx88_mpeg_irqs[32] = {
+        "ts_risci1", NULL, NULL, NULL,
+        "ts_risci2", NULL, NULL, NULL,
+        "ts_oflow",  NULL, NULL, NULL,
+        "ts_sync",   NULL, NULL, NULL,
+        "opc_err", "par_err", "rip_err", "pci_abort",
+        "ts_err?",
+};
+
+static void cx8802_mpeg_irq(struct cx8802_dev *dev)
+{
+        struct cx88_core *core = dev->core;
+        u32 status, mask, count;
+
+        dprintk( 1, "cx8802_mpeg_irq\n" );
+        status = cx_read(MO_TS_INTSTAT);
+        mask   = cx_read(MO_TS_INTMSK);
+        if (0 == (status & mask))
+                return;
+
+        cx_write(MO_TS_INTSTAT, status);
+
+        if (debug || (status & mask & ~0xff))
+                cx88_print_irqbits(core->name, "irq mpeg ",
+                                   cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
+                                   status, mask);
+
+        /* risc op code error */
+        if (status & (1 << 16)) {
+                printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
+                cx_clear(MO_TS_DMACNTRL, 0x11);
+                cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
+        }
+
+        /* risc1 y */
+        if (status & 0x01) {
+                dprintk( 1, "wake up\n" );
+                spin_lock(&dev->slock);
+                count = cx_read(MO_TS_GPCNT);
+                cx88_wakeup(dev->core, &dev->mpegq, count);
+                spin_unlock(&dev->slock);
+        }
+
+        /* risc2 y */
+        if (status & 0x10) {
+                spin_lock(&dev->slock);
+                cx8802_restart_queue(dev,&dev->mpegq);
+                spin_unlock(&dev->slock);
+        }
+
+        /* other general errors */
+        if (status & 0x1f0100) {
+                dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
+                spin_lock(&dev->slock);
+                cx8802_stop_dma(dev);
+                cx8802_restart_queue(dev,&dev->mpegq);
+                spin_unlock(&dev->slock);
+        }
+}
+
+#define MAX_IRQ_LOOP 10
+
+static irqreturn_t cx8802_irq(int irq, void *dev_id)
+{
+        struct cx8802_dev *dev = dev_id;
+        struct cx88_core *core = dev->core;
+        u32 status;
+        int loop, handled = 0;
+
+        for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
+                status = cx_read(MO_PCI_INTSTAT) &
+                        (core->pci_irqmask | PCI_INT_TSINT);
+                if (0 == status)
+                        goto out;
+                dprintk( 1, "cx8802_irq\n" );
+                dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
+                dprintk( 1, "    status: %d\n", status );
+                handled = 1;
+                cx_write(MO_PCI_INTSTAT, status);
+
+                if (status & core->pci_irqmask)
+                        cx88_core_irq(core,status);
+                if (status & PCI_INT_TSINT)
+                        cx8802_mpeg_irq(dev);
+        };
+        if (MAX_IRQ_LOOP == loop) {
+                dprintk( 0, "clearing mask\n" );
+                printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
+                       core->name);
+                cx_write(MO_PCI_INTMSK,0);
+        }
+
+ out:
+        return IRQ_RETVAL(handled);
+}
+
+static int cx8802_init_common(struct cx8802_dev *dev)
+{
+        struct cx88_core *core = dev->core;
+        int err;
+
+        /* pci init */
+        if (pci_enable_device(dev->pci))
+                return -EIO;
+        pci_set_master(dev->pci);
+        if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
+                printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
+                return -EIO;
+        }
+
+        dev->pci_rev = dev->pci->revision;
+        pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
+        printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
+               "latency: %d, mmio: 0x%llx\n", dev->core->name,
+               pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
+               dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
+
+        /* initialize driver struct */
+        spin_lock_init(&dev->slock);
+
+        /* init dma queue */
+        INIT_LIST_HEAD(&dev->mpegq.active);
+        INIT_LIST_HEAD(&dev->mpegq.queued);
+        dev->mpegq.timeout.function = cx8802_timeout;
+        dev->mpegq.timeout.data     = (unsigned long)dev;
+        init_timer(&dev->mpegq.timeout);
+        cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
+                          MO_TS_DMACNTRL,0x11,0x00);
+
+        /* get irq */
+        err = request_irq(dev->pci->irq, cx8802_irq,
+                          IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
+        if (err < 0) {
+                printk(KERN_ERR "%s: can't get IRQ %d\n",
+                       dev->core->name, dev->pci->irq);
+                return err;
+        }
+        cx_set(MO_PCI_INTMSK, core->pci_irqmask);
+
+        /* everything worked */
+        pci_set_drvdata(dev->pci,dev);
+        return 0;
+}
+
+static void cx8802_fini_common(struct cx8802_dev *dev)
+{
+        dprintk( 2, "cx8802_fini_common\n" );
+        cx8802_stop_dma(dev);
+        pci_disable_device(dev->pci);
+
+        /* unregister stuff */
+        free_irq(dev->pci->irq, dev);
+        pci_set_drvdata(dev->pci, NULL);
+
+        /* free memory */
+        btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
+}
+
+/* ----------------------------------------------------------- */
+
+static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
+{
+        struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
+        struct cx88_core *core = dev->core;
+
+        /* stop mpeg dma */
+        spin_lock(&dev->slock);
+        if (!list_empty(&dev->mpegq.active)) {
+                dprintk( 2, "suspend\n" );
+                printk("%s: suspend mpeg\n", core->name);
+                cx8802_stop_dma(dev);
+                del_timer(&dev->mpegq.timeout);
+        }
+        spin_unlock(&dev->slock);
+
+        /* FIXME -- shutdown device */
+        cx88_shutdown(dev->core);
+
+        pci_save_state(pci_dev);
+        if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
+                pci_disable_device(pci_dev);
+                dev->state.disabled = 1;
+        }
+        return 0;
+}
+
+static int cx8802_resume_common(struct pci_dev *pci_dev)
+{
+        struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
+        struct cx88_core *core = dev->core;
+        int err;
+
+        if (dev->state.disabled) {
+                err=pci_enable_device(pci_dev);
+                if (err) {
+                        printk(KERN_ERR "%s: can't enable device\n",
+                                               dev->core->name);
+                        return err;
+                }
+                dev->state.disabled = 0;
+        }
+        err=pci_set_power_state(pci_dev, PCI_D0);
+        if (err) {
+                printk(KERN_ERR "%s: can't enable device\n",
+                                               dev->core->name);
+                pci_disable_device(pci_dev);
+                dev->state.disabled = 1;
+
+                return err;
+        }
+        pci_restore_state(pci_dev);
+
+        /* FIXME: re-initialize hardware */
+        cx88_reset(dev->core);
+
+        /* restart video+vbi capture */
+        spin_lock(&dev->slock);
+        if (!list_empty(&dev->mpegq.active)) {
+                printk("%s: resume mpeg\n", core->name);
+                cx8802_restart_queue(dev,&dev->mpegq);
+        }
+        spin_unlock(&dev->slock);
+
+        return 0;
+}
+
+struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
+{
+        struct cx8802_driver *d;
+
+        list_for_each_entry(d, &dev->drvlist, drvlist)
+                if (d->type_id == btype)
+                        return d;
+
+        return NULL;
+}
+
+/* Driver asked for hardware access. */
+static int cx8802_request_acquire(struct cx8802_driver *drv)
+{
+        struct cx88_core *core = drv->core;
+        unsigned int    i;
+
+        /* Fail a request for hardware if the device is busy. */
+        if (core->active_type_id != CX88_BOARD_NONE &&
+            core->active_type_id != drv->type_id)
+                return -EBUSY;
+
+        if (drv->type_id == CX88_MPEG_DVB) {
+                /* When switching to DVB, always set the input to the tuner */
+                core->last_analog_input = core->input;
+                core->input = 0;
+                for (i = 0;
+                     i < (sizeof(core->board.input) / sizeof(struct cx88_input));
+                     i++) {
+                        if (core->board.input[i].type == CX88_VMUX_DVB) {
+                                core->input = i;
+                                break;
+                        }
+                }
+        }
+
+        if (drv->advise_acquire)
+        {
+                core->active_ref++;
+                if (core->active_type_id == CX88_BOARD_NONE) {
+                        core->active_type_id = drv->type_id;
+                        drv->advise_acquire(drv);
+                }
+
+                mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
+        }
+
+        return 0;
+}
+
+/* Driver asked to release hardware. */
+static int cx8802_request_release(struct cx8802_driver *drv)
+{
+        struct cx88_core *core = drv->core;
+
+        if (drv->advise_release && --core->active_ref == 0)
+        {
+                if (drv->type_id == CX88_MPEG_DVB) {
+                        /* If the DVB driver is releasing, reset the input
+                           state to the last configured analog input */
+                        core->input = core->last_analog_input;
+                }
+
+                drv->advise_release(drv);
+                core->active_type_id = CX88_BOARD_NONE;
+                mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
+        }
+
+        return 0;
+}
+
+static int cx8802_check_driver(struct cx8802_driver *drv)
+{
+        if (drv == NULL)
+                return -ENODEV;
+
+        if ((drv->type_id != CX88_MPEG_DVB) &&
+                (drv->type_id != CX88_MPEG_BLACKBIRD))
+                return -EINVAL;
+
+        if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
+                (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
+                return -EINVAL;
+
+        if ((drv->probe == NULL) ||
+                (drv->remove == NULL) ||
+                (drv->advise_acquire == NULL) ||
+                (drv->advise_release == NULL))
+                return -EINVAL;
+
+        return 0;
+}
+
+int cx8802_register_driver(struct cx8802_driver *drv)
+{
+        struct cx8802_dev *dev;
+        struct cx8802_driver *driver;
+        int err, i = 0;
+
+        printk(KERN_INFO
+               "cx88/2: registering cx8802 driver, type: %s access: %s\n",
+               drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
+               drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
+
+        if ((err = cx8802_check_driver(drv)) != 0) {
+                printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
+                return err;
+        }
+
+        mutex_lock(&cx8802_mutex);
+
+        list_for_each_entry(dev, &cx8802_devlist, devlist) {
+                printk(KERN_INFO
+                       "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
+                       dev->core->name, dev->pci->subsystem_vendor,
+                       dev->pci->subsystem_device, dev->core->board.name,
+                       dev->core->boardnr);
+
+                /* Bring up a new struct for each driver instance */
+                driver = kzalloc(sizeof(*drv),GFP_KERNEL);
+                if (driver == NULL) {
+                        err = -ENOMEM;
+                        goto out;
+                }
+
+                /* Snapshot of the driver registration data */
+                drv->core = dev->core;
+                drv->suspend = cx8802_suspend_common;
+                drv->resume = cx8802_resume_common;
+                drv->request_acquire = cx8802_request_acquire;
+                drv->request_release = cx8802_request_release;
+                memcpy(driver, drv, sizeof(*driver));
+
+                mutex_lock(&drv->core->lock);
+                err = drv->probe(driver);
+                if (err == 0) {
+                        i++;
+                        list_add_tail(&driver->drvlist, &dev->drvlist);
+                } else {
+                        printk(KERN_ERR
+                               "%s/2: cx8802 probe failed, err = %d\n",
+                               dev->core->name, err);
+                }
+                mutex_unlock(&drv->core->lock);
+        }
+
+        err = i ? 0 : -ENODEV;
+out:
+        mutex_unlock(&cx8802_mutex);
+        return err;
+}
+
+int cx8802_unregister_driver(struct cx8802_driver *drv)
+{
+        struct cx8802_dev *dev;
+        struct cx8802_driver *d, *dtmp;
+        int err = 0;
+
+        printk(KERN_INFO
+               "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
+               drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
+               drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
+
+        mutex_lock(&cx8802_mutex);
+
+        list_for_each_entry(dev, &cx8802_devlist, devlist) {
+                printk(KERN_INFO
+                       "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
+                       dev->core->name, dev->pci->subsystem_vendor,
+                       dev->pci->subsystem_device, dev->core->board.name,
+                       dev->core->boardnr);
+
+                mutex_lock(&dev->core->lock);
+
+                list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
+                        /* only unregister the correct driver type */
+                        if (d->type_id != drv->type_id)
+                                continue;
+
+                        err = d->remove(d);
+                        if (err == 0) {
+                                list_del(&d->drvlist);
+                                kfree(d);
+                        } else
+                                printk(KERN_ERR "%s/2: cx8802 driver remove "
+                                       "failed (%d)\n", dev->core->name, err);
+                }
+
+                mutex_unlock(&dev->core->lock);
+        }
+
+        mutex_unlock(&cx8802_mutex);
+
+        return err;
+}
+
+/* ----------------------------------------------------------- */
+static int __devinit cx8802_probe(struct pci_dev *pci_dev,
+                               const struct pci_device_id *pci_id)
+{
+        struct cx8802_dev *dev;
+        struct cx88_core  *core;
+        int err;
+
+        /* general setup */
+        core = cx88_core_get(pci_dev);
+        if (NULL == core)
+                return -EINVAL;
+
+        printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
+
+        err = -ENODEV;
+        if (!core->board.mpeg)
+                goto fail_core;
+
+        err = -ENOMEM;
+        dev = kzalloc(sizeof(*dev),GFP_KERNEL);
+        if (NULL == dev)
+                goto fail_core;
+        dev->pci = pci_dev;
+        dev->core = core;
+
+        /* Maintain a reference so cx88-video can query the 8802 device. */
+        core->dvbdev = dev;
+
+        err = cx8802_init_common(dev);
+        if (err != 0)
+                goto fail_free;
+
+        INIT_LIST_HEAD(&dev->drvlist);
+        mutex_lock(&cx8802_mutex);
+        list_add_tail(&dev->devlist,&cx8802_devlist);
+        mutex_unlock(&cx8802_mutex);
+
+        /* now autoload cx88-dvb or cx88-blackbird */
+        request_modules(dev);
+        return 0;
+
+ fail_free:
+        kfree(dev);
+ fail_core:
+        core->dvbdev = NULL;
+        cx88_core_put(core,pci_dev);
+        return err;
+}
+
+static void __devexit cx8802_remove(struct pci_dev *pci_dev)
+{
+        struct cx8802_dev *dev;
+
+        dev = pci_get_drvdata(pci_dev);
+
+        dprintk( 1, "%s\n", __func__);
+
+        flush_request_modules(dev);
+
+        mutex_lock(&dev->core->lock);
+
+        if (!list_empty(&dev->drvlist)) {
+                struct cx8802_driver *drv, *tmp;
+                int err;
+
+                printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
+                       "while cx8802 sub-drivers still loaded?!\n",
+                       dev->core->name);
+
+                list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
+                        err = drv->remove(drv);
+                        if (err == 0) {
+                                list_del(&drv->drvlist);
+                        } else
+                                printk(KERN_ERR "%s/2: cx8802 driver remove "
+                                       "failed (%d)\n", dev->core->name, err);
+                        kfree(drv);
+                }
+        }
+
+        mutex_unlock(&dev->core->lock);
+
+        /* Destroy any 8802 reference. */
+        dev->core->dvbdev = NULL;
+
+        /* common */
+        cx8802_fini_common(dev);
+        cx88_core_put(dev->core,dev->pci);
+        kfree(dev);
+}
+
+static const struct pci_device_id cx8802_pci_tbl[] = {
+        {
+                .vendor       = 0x14f1,
+                .device       = 0x8802,
+                .subvendor    = PCI_ANY_ID,
+                .subdevice    = PCI_ANY_ID,
+        },{
+                /* --- end of list --- */
+        }
+};
+MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
+
+static struct pci_driver cx8802_pci_driver = {
+        .name     = "cx88-mpeg driver manager",
+        .id_table = cx8802_pci_tbl,
+        .probe    = cx8802_probe,
+        .remove   = __devexit_p(cx8802_remove),
+};
+
+static int __init cx8802_init(void)
+{
+        printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %s loaded\n",
+               CX88_VERSION);
+        return pci_register_driver(&cx8802_pci_driver);
+}
+
+static void __exit cx8802_fini(void)
+{
+        pci_unregister_driver(&cx8802_pci_driver);
+}
+
+module_init(cx8802_init);
+module_exit(cx8802_fini);
+EXPORT_SYMBOL(cx8802_buf_prepare);
+EXPORT_SYMBOL(cx8802_buf_queue);
+EXPORT_SYMBOL(cx8802_cancel_buffers);
+
+EXPORT_SYMBOL(cx8802_register_driver);
+EXPORT_SYMBOL(cx8802_unregister_driver);
+EXPORT_SYMBOL(cx8802_get_driver);
+/* ----------------------------------------------------------- */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
+ */