diff options
Diffstat (limited to 'drivers/media/video/cx88/cx88-alsa.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-alsa.c | 847 |
1 files changed, 847 insertions, 0 deletions
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c new file mode 100644 index 00000000000..a2e36a1e5f5 --- /dev/null +++ b/drivers/media/video/cx88/cx88-alsa.c @@ -0,0 +1,847 @@ +/* + * + * Support for audio capture + * PCI function #1 of the cx2388x. + * + * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org> + * (c) 2005 Mauro Carvalho Chehab <mchehab@brturbo.com.br> + * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org> + * Based on dummy.c by Jaroslav Kysela <perex@suse.cz> + * + * 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/init.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <asm/delay.h> +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/control.h> +#include <sound/initval.h> + +#include "cx88.h" +#include "cx88-reg.h" + +#define dprintk(level,fmt, arg...) if (debug >= level) \ + printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg) + +#define dprintk_core(level,fmt, arg...) if (debug >= level) \ + printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg) + + +/**************************************************************************** + Data type declarations - Can be moded to a header file later + ****************************************************************************/ + +/* These can be replaced after done */ +#define MIXER_ADDR_LAST MAX_CX88_INPUT + +struct cx88_audio_dev { + struct cx88_core *core; + struct cx88_dmaqueue q; + + /* pci i/o */ + struct pci_dev *pci; + unsigned char pci_rev,pci_lat; + + /* audio controls */ + int irq; + + snd_card_t *card; + + spinlock_t reg_lock; + + unsigned int dma_size; + unsigned int period_size; + unsigned int num_periods; + + struct videobuf_dmabuf dma_risc; + + int mixer_volume[MIXER_ADDR_LAST+1][2]; + int capture_source[MIXER_ADDR_LAST+1][2]; + + long int read_count; + long int read_offset; + + struct cx88_buffer *buf; + + long opened; + snd_pcm_substream_t *substream; + +}; +typedef struct cx88_audio_dev snd_cx88_card_t; + + + +/**************************************************************************** + Module global static vars + ****************************************************************************/ + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; +static snd_card_t *snd_cx88_cards[SNDRV_CARDS]; + +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled."); + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s)."); + + +/**************************************************************************** + Module macros + ****************************************************************************/ + +MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards"); +MODULE_AUTHOR("Ricardo Cerqueira"); +MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@brturbo.com.br>"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Conexant,23881}," + "{{Conexant,23882}," + "{{Conexant,23883}"); +static unsigned int debug; +module_param(debug,int,0644); +MODULE_PARM_DESC(debug,"enable debug messages"); + +/**************************************************************************** + Module specific funtions + ****************************************************************************/ + +/* + * BOARD Specific: Sets audio DMA + */ + +int _cx88_start_audio_dma(snd_cx88_card_t *chip) +{ + struct cx88_buffer *buf = chip->buf; + struct cx88_core *core=chip->core; + struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; + + + dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start); + + /* setup fifo + format - out channel */ + cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25], + buf->bpl, buf->risc.dma); + + /* sets bpl size */ + cx_write(MO_AUDD_LNGTH, buf->bpl); + + /* reset counter */ + cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET); + + dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02)); + /* enable irqs */ + cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02); + + + /* Enables corresponding bits at AUD_INT_STAT */ + cx_write(MO_AUD_INTMSK, + (1<<16)| + (1<<12)| + (1<<4)| + (1<<0) + ); + + /* start dma */ + cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */ + cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */ + + if (debug) + cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); + + return 0; +} + +/* + * BOARD Specific: Resets audio DMA + */ +int _cx88_stop_audio_dma(snd_cx88_card_t *chip) +{ + struct cx88_core *core=chip->core; + dprintk(1, "Stopping audio DMA\n"); + + /* stop dma */ + cx_clear(MO_AUD_DMACNTRL, 0x11); + + /* disable irqs */ + cx_clear(MO_PCI_INTMSK, 0x02); + cx_clear(MO_AUD_INTMSK, + (1<<16)| + (1<<12)| + (1<<4)| + (1<<0) + ); + + if (debug) + cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); + + return 0; +} + +#define MAX_IRQ_LOOP 10 + +/* + * BOARD Specific: IRQ dma bits + */ +static char *cx88_aud_irqs[32] = { + "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ + NULL, /* reserved */ + "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ + NULL, /* reserved */ + "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ + NULL, /* reserved */ + "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ + NULL, /* reserved */ + "opc_err", "par_err", "rip_err", /* 16-18 */ + "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ +}; + +/* + * BOARD Specific: Threats IRQ audio specific calls + */ +static void cx8801_aud_irq(snd_cx88_card_t *chip) +{ + struct cx88_core *core = chip->core; + u32 status, mask; + u32 count; + + status = cx_read(MO_AUD_INTSTAT); + mask = cx_read(MO_AUD_INTMSK); + if (0 == (status & mask)) { + spin_unlock(&chip->reg_lock); + return; + } + cx_write(MO_AUD_INTSTAT, status); + if (debug > 1 || (status & mask & ~0xff)) + cx88_print_irqbits(core->name, "irq aud", + cx88_aud_irqs, status, mask); + /* risc op code error */ + if (status & (1 << 16)) { + printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name); + cx_clear(MO_AUD_DMACNTRL, 0x11); + cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); + } + + /* risc1 downstream */ + if (status & 0x01) { + spin_lock(&chip->reg_lock); + count = cx_read(MO_AUDD_GPCNT); + spin_unlock(&chip->reg_lock); + if (chip->read_count == 0) + chip->read_count += chip->dma_size; + } + + if (chip->read_count >= chip->period_size) { + dprintk(2, "Elapsing period\n"); + snd_pcm_period_elapsed(chip->substream); + } + + dprintk(3,"Leaving audio IRQ handler...\n"); + + /* FIXME: Any other status should deserve a special handling? */ +} + +/* + * BOARD Specific: Handles IRQ calls + */ +static irqreturn_t cx8801_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + snd_cx88_card_t *chip = dev_id; + struct cx88_core *core = chip->core; + u32 status; + int loop, handled = 0; + + for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { + status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02); + if (0 == status) + goto out; + dprintk( 3, "cx8801_irq\n" ); + dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); + dprintk( 3, " status: %d\n", status ); + handled = 1; + cx_write(MO_PCI_INTSTAT, status); + + if (status & 0x02) + { + dprintk( 2, " ALSA IRQ handling\n" ); + cx8801_aud_irq(chip); + } + }; + + if (MAX_IRQ_LOOP == loop) { + dprintk( 0, "clearing mask\n" ); + dprintk(1,"%s/0: irq loop -- clearing mask\n", + core->name); + cx_clear(MO_PCI_INTMSK,0x02); + } + + out: + return IRQ_RETVAL(handled); +} + + +static int dsp_buffer_free(snd_cx88_card_t *chip) +{ + BUG_ON(!chip->dma_size); + + dprintk(2,"Freeing buffer\n"); + videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc); + videobuf_dma_free(&chip->dma_risc); + btcx_riscmem_free(chip->pci,&chip->buf->risc); + kfree(chip->buf); + + chip->dma_size = 0; + + return 0; +} + +/**************************************************************************** + ALSA PCM Interface + ****************************************************************************/ + +/* + * Digital hardware definition + */ +static snd_pcm_hardware_t snd_cx88_digital_hw = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (2*2048), + .period_bytes_min = 2048, + .period_bytes_max = 2048, + .periods_min = 2, + .periods_max = 2, +}; + +/* + * audio pcm capture runtime free + */ +static void snd_card_cx88_runtime_free(snd_pcm_runtime_t *runtime) +{ +} +/* + * audio pcm capture open callback + */ +static int snd_cx88_pcm_open(snd_pcm_substream_t *substream) +{ + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + snd_pcm_runtime_t *runtime = substream->runtime; + int err; + + if (test_and_set_bit(0, &chip->opened)) + return -EBUSY; + + err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + goto _error; + + chip->substream = substream; + + chip->read_count = 0; + chip->read_offset = 0; + + runtime->private_free = snd_card_cx88_runtime_free; + runtime->hw = snd_cx88_digital_hw; + + return 0; +_error: + dprintk(1,"Error opening PCM!\n"); + clear_bit(0, &chip->opened); + smp_mb__after_clear_bit(); + return err; +} + +/* + * audio close callback + */ +static int snd_cx88_close(snd_pcm_substream_t *substream) +{ + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + + clear_bit(0, &chip->opened); + smp_mb__after_clear_bit(); + + return 0; +} + +/* + * hw_params callback + */ +static int snd_cx88_hw_params(snd_pcm_substream_t * substream, + snd_pcm_hw_params_t * hw_params) +{ + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + struct cx88_buffer *buf; + + if (substream->runtime->dma_area) { + dsp_buffer_free(chip); + substream->runtime->dma_area = NULL; + } + + + chip->period_size = params_period_bytes(hw_params); + chip->num_periods = params_periods(hw_params); + chip->dma_size = chip->period_size * params_periods(hw_params); + + BUG_ON(!chip->dma_size); + + dprintk(1,"Setting buffer\n"); + + buf = kmalloc(sizeof(*buf),GFP_KERNEL); + if (NULL == buf) + return -ENOMEM; + memset(buf,0,sizeof(*buf)); + + + buf->vb.memory = V4L2_MEMORY_MMAP; + buf->vb.width = chip->period_size; + buf->vb.height = chip->num_periods; + buf->vb.size = chip->dma_size; + buf->vb.field = V4L2_FIELD_NONE; + + videobuf_dma_init(&buf->vb.dma); + videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE, + (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT)); + + videobuf_dma_pci_map(chip->pci,&buf->vb.dma); + + + cx88_risc_databuffer(chip->pci, &buf->risc, + buf->vb.dma.sglist, + buf->vb.width, buf->vb.height); + + buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); + buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); + + buf->vb.state = STATE_PREPARED; + + buf->bpl = chip->period_size; + chip->buf = buf; + chip->dma_risc = buf->vb.dma; + + dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages); + substream->runtime->dma_area = chip->dma_risc.vmalloc; + return 0; +} + +/* + * hw free callback + */ +static int snd_cx88_hw_free(snd_pcm_substream_t * substream) +{ + + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + + if (substream->runtime->dma_area) { + dsp_buffer_free(chip); + substream->runtime->dma_area = NULL; + } + + return 0; +} + +/* + * prepare callback + */ +static int snd_cx88_prepare(snd_pcm_substream_t *substream) +{ + return 0; +} + + +/* + * trigger callback + */ +static int snd_cx88_card_trigger(snd_pcm_substream_t *substream, int cmd) +{ + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + int err; + + spin_lock(&chip->reg_lock); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + err=_cx88_start_audio_dma(chip); + break; + case SNDRV_PCM_TRIGGER_STOP: + err=_cx88_stop_audio_dma(chip); + break; + default: + err=-EINVAL; + break; + } + + spin_unlock(&chip->reg_lock); + + return err; +} + +/* + * pointer callback + */ +static snd_pcm_uframes_t snd_cx88_pointer(snd_pcm_substream_t *substream) +{ + snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); + snd_pcm_runtime_t *runtime = substream->runtime; + + if (chip->read_count) { + chip->read_count -= snd_pcm_lib_period_bytes(substream); + chip->read_offset += snd_pcm_lib_period_bytes(substream); + if (chip->read_offset == chip->dma_size) + chip->read_offset = 0; + } + + dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count); + return bytes_to_frames(runtime, chip->read_offset); + +} + +/* + * operators + */ +static snd_pcm_ops_t snd_cx88_pcm_ops = { + .open = snd_cx88_pcm_open, + .close = snd_cx88_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_cx88_hw_params, + .hw_free = snd_cx88_hw_free, + .prepare = snd_cx88_prepare, + .trigger = snd_cx88_card_trigger, + .pointer = snd_cx88_pointer, +}; + +/* + * create a PCM device + */ +static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name) +{ + int err; + snd_pcm_t *pcm; + + err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + strcpy(pcm->name, name); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); + + return 0; +} + +/**************************************************************************** + CONTROL INTERFACE + ****************************************************************************/ +static int snd_cx88_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info) +{ + info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + info->count = 1; + info->value.integer.min = 0; + info->value.integer.max = 0x3f; + + return 0; +} + +/* OK - TODO: test it */ +static int snd_cx88_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) +{ + snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); + struct cx88_core *core=chip->core; + + value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); + + return 0; +} + +/* OK - TODO: test it */ +static int snd_cx88_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) +{ + snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); + struct cx88_core *core=chip->core; + int v; + u32 old_control; + + spin_lock_irq(&chip->reg_lock); + old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); + v = 0x3f - (value->value.integer.value[0] & 0x3f); + cx_andor(AUD_VOL_CTL, 0x3f, v); + spin_unlock_irq(&chip->reg_lock); + + return v != old_control; +} + +static snd_kcontrol_new_t snd_cx88_capture_volume = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Capture Volume", + .info = snd_cx88_capture_volume_info, + .get = snd_cx88_capture_volume_get, + .put = snd_cx88_capture_volume_put, +}; + + +/**************************************************************************** + Basic Flow for Sound Devices + ****************************************************************************/ + +/* + * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio + * Only boards with eeprom and byte 1 at eeprom=1 have it + */ + +struct pci_device_id cx88_audio_pci_tbl[] = { + {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, + {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, + {0, } +}; +MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); + +/* + * Chip-specific destructor + */ + +static int snd_cx88_free(snd_cx88_card_t *chip) +{ + + if (chip->irq >= 0){ + synchronize_irq(chip->irq); + free_irq(chip->irq, chip); + } + + cx88_core_put(chip->core,chip->pci); + + pci_disable_device(chip->pci); + return 0; +} + +/* + * Component Destructor + */ +static void snd_cx88_dev_free(snd_card_t * card) +{ + snd_cx88_card_t *chip = card->private_data; + + snd_cx88_free(chip); +} + + +/* + * Alsa Constructor - Component probe + */ + +static int devno; +static int __devinit snd_cx88_create(snd_card_t *card, struct pci_dev *pci, + snd_cx88_card_t **rchip) +{ + snd_cx88_card_t *chip; + struct cx88_core *core; + int err; + + *rchip = NULL; + + err = pci_enable_device(pci); + if (err < 0) + return err; + + pci_set_master(pci); + + chip = (snd_cx88_card_t *) card->private_data; + + core = cx88_core_get(pci); + + if (!pci_dma_supported(pci,0xffffffff)) { + dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name); + err = -EIO; + cx88_core_put(core,pci); + return err; + } + + + /* pci init */ + chip->card = card; + chip->pci = pci; + chip->irq = -1; + spin_lock_init(&chip->reg_lock); + + cx88_reset(core); + if (NULL == core) { + err = -EINVAL; + kfree (chip); + return err; + } + chip->core = core; + + /* get irq */ + err = request_irq(chip->pci->irq, cx8801_irq, + SA_SHIRQ | SA_INTERRUPT, chip->core->name, chip); + if (err < 0) { + dprintk(0, "%s: can't get IRQ %d\n", + chip->core->name, chip->pci->irq); + return err; + } + + /* print pci info */ + pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev); + pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat); + + dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, " + "latency: %d, mmio: 0x%lx\n", core->name, devno, + pci_name(pci), chip->pci_rev, pci->irq, + chip->pci_lat,pci_resource_start(pci,0)); + + chip->irq = pci->irq; + synchronize_irq(chip->irq); + + snd_card_set_dev(card, &pci->dev); + + *rchip = chip; + + return 0; +} + +static int __devinit cx88_audio_initdev(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + snd_card_t *card; + snd_cx88_card_t *chip; + int err; + + if (devno >= SNDRV_CARDS) + return (-ENODEV); + + if (!enable[devno]) { + ++devno; + return (-ENOENT); + } + + card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t)); + if (!card) + return (-ENOMEM); + + card->private_free = snd_cx88_dev_free; + + err = snd_cx88_create(card, pci, &chip); + if (err < 0) + return (err); + + err = snd_cx88_pcm(chip, 0, "CX88 Digital"); + + if (err < 0) { + snd_card_free(card); + return (err); + } + + err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip)); + if (err < 0) { + snd_card_free(card); + return (err); + } + + strcpy (card->driver, "CX88x"); + sprintf(card->shortname, "Conexant CX%x", pci->device); + sprintf(card->longname, "%s at %#lx", + card->shortname, pci_resource_start(pci, 0)); + strcpy (card->mixername, "CX88"); + + dprintk (0, "%s/%i: ALSA support for cx2388x boards\n", + card->driver,devno); + + err = snd_card_register(card); + if (err < 0) { + snd_card_free(card); + return (err); + } + snd_cx88_cards[devno] = card; + + pci_set_drvdata(pci,card); + + devno++; + return 0; +} +/* + * ALSA destructor + */ +static void __devexit cx88_audio_finidev(struct pci_dev *pci) +{ + struct cx88_audio_dev *card = pci_get_drvdata(pci); + + snd_card_free((void *)card); + + pci_set_drvdata(pci, NULL); + + devno--; +} + +/* + * PCI driver definition + */ + +static struct pci_driver cx88_audio_pci_driver = { + .name = "cx88_audio", + .id_table = cx88_audio_pci_tbl, + .probe = cx88_audio_initdev, + .remove = cx88_audio_finidev, +}; + +/**************************************************************************** + LINUX MODULE INIT + ****************************************************************************/ + +/* + * module init + */ +static int cx88_audio_init(void) +{ + printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n", + (CX88_VERSION_CODE >> 16) & 0xff, + (CX88_VERSION_CODE >> 8) & 0xff, + CX88_VERSION_CODE & 0xff); +#ifdef SNAPSHOT + printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n", + SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100); +#endif + return pci_register_driver(&cx88_audio_pci_driver); +} + +/* + * module remove + */ +static void cx88_audio_fini(void) +{ + + pci_unregister_driver(&cx88_audio_pci_driver); +} + +module_init(cx88_audio_init); +module_exit(cx88_audio_fini); + +/* ----------------------------------------------------------- */ +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |