diff options
Diffstat (limited to 'drivers/media/pci/cx88/cx88-mpeg.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-mpeg.c | 807 |
1 files changed, 807 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 000000000..2c1d5137a --- /dev/null +++ b/drivers/media/pci/cx88/cx88-mpeg.c @@ -0,0 +1,807 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * 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> + */ + +#include "cx88.h" + +#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 <linux/delay.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...) do { \ + if (debug + 1 > level) \ + printk(KERN_DEBUG pr_fmt("%s: mpeg:" fmt), \ + __func__, ##arg); \ +} while (0) + +#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(&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); +/* ------------------------------------------------------------------ */ + +int cx8802_start_dma(struct cx8802_dev *dev, + struct cx88_dmaqueue *q, + struct cx88_buffer *buf) +{ + struct cx88_core *core = dev->core; + + dprintk(1, "w: %d, h: %d, f: %d\n", + core->width, core->height, core->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, dev->ts_packet_size); + + /* + * 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: + /* Enable MPEG parallel IO and video signal pins */ + cx_write(MO_PINMUX_IO, 0x88); + 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 */ + + /* punctured clock TS & posedge driven & software reset */ + cx_write(TS_GEN_CNTRL, 0x46); + udelay(100); + + cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */ + cx_write(TS_VALERR_CNTRL, 0x2000); + + /* punctured clock TS & posedge driven */ + cx_write(TS_GEN_CNTRL, 0x06); + udelay(100); + } else { + pr_err("%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 = 0; + + /* clear interrupt status register */ + cx_write(MO_TS_INTSTAT, 0x1f1111); + + /* 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; +} +EXPORT_SYMBOL(cx8802_start_dma); + +static int cx8802_stop_dma(struct cx8802_dev *dev) +{ + struct cx88_core *core = dev->core; + + dprintk(1, "\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, "\n"); + if (list_empty(&q->active)) + return 0; + + buf = list_entry(q->active.next, struct cx88_buffer, list); + dprintk(2, "restart_queue [%p/%d]: restart dma\n", + buf, buf->vb.vb2_buf.index); + cx8802_start_dma(dev, q, buf); + return 0; +} + +/* ------------------------------------------------------------------ */ + +int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev, + struct cx88_buffer *buf) +{ + int size = dev->ts_packet_size * dev->ts_packet_count; + struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0); + struct cx88_riscmem *risc = &buf->risc; + int rc; + + if (vb2_plane_size(&buf->vb.vb2_buf, 0) < size) + return -EINVAL; + vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); + + rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl, + dev->ts_packet_size, dev->ts_packet_count, 0); + if (rc) { + if (risc->cpu) + dma_free_coherent(&dev->pci->dev, risc->size, + risc->cpu, risc->dma); + memset(risc, 0, sizeof(*risc)); + return rc; + } + return 0; +} +EXPORT_SYMBOL(cx8802_buf_prepare); + +void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) +{ + struct cx88_buffer *prev; + struct cx88_dmaqueue *cx88q = &dev->mpegq; + + dprintk(1, "\n"); + /* add jump to start */ + buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8); + buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); + buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8); + + if (list_empty(&cx88q->active)) { + dprintk(1, "queue is empty - first active\n"); + list_add_tail(&buf->list, &cx88q->active); + dprintk(1, "[%p/%d] %s - first active\n", + buf, buf->vb.vb2_buf.index, __func__); + + } else { + buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); + dprintk(1, "queue is not empty - append to active\n"); + prev = list_entry(cx88q->active.prev, struct cx88_buffer, list); + list_add_tail(&buf->list, &cx88q->active); + prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); + dprintk(1, "[%p/%d] %s - append to active\n", + buf, buf->vb.vb2_buf.index, __func__); + } +} +EXPORT_SYMBOL(cx8802_buf_queue); + +/* ----------------------------------------------------------- */ + +static void do_cancel_buffers(struct cx8802_dev *dev) +{ + 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, list); + list_del(&buf->list); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&dev->slock, flags); +} + +void cx8802_cancel_buffers(struct cx8802_dev *dev) +{ + dprintk(1, "\n"); + cx8802_stop_dma(dev); + do_cancel_buffers(dev); +} +EXPORT_SYMBOL(cx8802_cancel_buffers); + +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, "\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("irq mpeg ", + cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), + status, mask); + + /* risc op code error */ + if (status & (1 << 16)) { + pr_warn("mpeg risc op code error\n"); + 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); + } + + /* other general errors */ + if (status & 0x1f0100) { + dprintk(0, "general errors: 0x%08x\n", status & 0x1f0100); + spin_lock(&dev->slock); + cx8802_stop_dma(dev); + 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 (status == 0) + 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 (loop == MAX_IRQ_LOOP) { + dprintk(0, "clearing mask\n"); + pr_warn("irq loop -- clearing mask\n"); + 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); + err = dma_set_mask(&dev->pci->dev, DMA_BIT_MASK(32)); + if (err) { + pr_err("Oops: no 32bit PCI DMA ???\n"); + return -EIO; + } + + dev->pci_rev = dev->pci->revision; + pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); + pr_info("found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n", + 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); + + /* get irq */ + err = request_irq(dev->pci->irq, cx8802_irq, + IRQF_SHARED, dev->core->name, dev); + if (err < 0) { + pr_err("can't get IRQ %d\n", 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, "\n"); + cx8802_stop_dma(dev); + pci_disable_device(dev->pci); + + /* unregister stuff */ + free_irq(dev->pci->irq, dev); +} + +/* ----------------------------------------------------------- */ + +static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) +{ + struct cx8802_dev *dev = pci_get_drvdata(pci_dev); + unsigned long flags; + + /* stop mpeg dma */ + spin_lock_irqsave(&dev->slock, flags); + if (!list_empty(&dev->mpegq.active)) { + dprintk(2, "suspend\n"); + pr_info("suspend mpeg\n"); + cx8802_stop_dma(dev); + } + spin_unlock_irqrestore(&dev->slock, flags); + + /* FIXME -- shutdown device */ + cx88_shutdown(dev->core); + + pci_save_state(pci_dev); + if (pci_set_power_state(pci_dev, + pci_choose_state(pci_dev, state)) != 0) { + 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); + unsigned long flags; + int err; + + if (dev->state.disabled) { + err = pci_enable_device(pci_dev); + if (err) { + pr_err("can't enable device\n"); + return err; + } + dev->state.disabled = 0; + } + err = pci_set_power_state(pci_dev, PCI_D0); + if (err) { + pr_err("can't enable device\n"); + 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_irqsave(&dev->slock, flags); + if (!list_empty(&dev->mpegq.active)) { + pr_info("resume mpeg\n"); + cx8802_restart_queue(dev, &dev->mpegq); + } + spin_unlock_irqrestore(&dev->slock, flags); + + 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; +} +EXPORT_SYMBOL(cx8802_get_driver); + +/* 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 < ARRAY_SIZE(core->board.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); + } + + dprintk(1, "Post acquire GPIO=%x\n", 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; + dprintk(1, "Post release GPIO=%x\n", cx_read(MO_GP0_IO)); + } + + return 0; +} + +static int cx8802_check_driver(struct cx8802_driver *drv) +{ + if (!drv) + 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) || + (!drv->remove) || + (!drv->advise_acquire) || + (!drv->advise_release)) + return -EINVAL; + + return 0; +} + +int cx8802_register_driver(struct cx8802_driver *drv) +{ + struct cx8802_dev *dev; + struct cx8802_driver *driver; + int err, i = 0; + + pr_info("registering cx8802 driver, type: %s access: %s\n", + drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", + drv->hw_access == CX8802_DRVCTL_SHARED ? + "shared" : "exclusive"); + + err = cx8802_check_driver(drv); + if (err) { + pr_err("cx8802_driver is invalid\n"); + return err; + } + + mutex_lock(&cx8802_mutex); + + list_for_each_entry(dev, &cx8802_devlist, devlist) { + pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", + 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) { + 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 { + pr_err("cx8802 probe failed, err = %d\n", err); + } + mutex_unlock(&drv->core->lock); + } + + err = i ? 0 : -ENODEV; +out: + mutex_unlock(&cx8802_mutex); + return err; +} +EXPORT_SYMBOL(cx8802_register_driver); + +int cx8802_unregister_driver(struct cx8802_driver *drv) +{ + struct cx8802_dev *dev; + struct cx8802_driver *d, *dtmp; + int err = 0; + + pr_info("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) { + pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", + 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 + pr_err("cx8802 driver remove failed (%d)\n", + err); + } + + mutex_unlock(&dev->core->lock); + } + + mutex_unlock(&cx8802_mutex); + + return err; +} +EXPORT_SYMBOL(cx8802_unregister_driver); + +/* ----------------------------------------------------------- */ +static int 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 (!core) + return -EINVAL; + + pr_info("cx2388x 8802 Driver Manager\n"); + + err = -ENODEV; + if (!core->board.mpeg) + goto fail_core; + + err = -ENOMEM; + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!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_dev; + + 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_dev: + kfree(dev); + fail_core: + core->dvbdev = NULL; + cx88_core_put(core, pci_dev); + return err; +} + +static void 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; + + pr_warn("Trying to remove cx8802 driver while cx8802 sub-drivers still loaded?!\n"); + + list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { + err = drv->remove(drv); + if (err == 0) { + list_del(&drv->drvlist); + } else + pr_err("cx8802 driver remove failed (%d)\n", + 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 = cx8802_remove, +}; + +module_pci_driver(cx8802_pci_driver); |