| /* |
| * Driver for the Conexant CX25821 PCIe bridge |
| * |
| * Copyright (C) 2009 Conexant Systems Inc. |
| * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> |
| * Based on SAA713x ALSA driver and CX88 driver |
| * |
| * 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, version 2 |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/device.h> |
| #include <linux/interrupt.h> |
| #include <linux/vmalloc.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| |
| #include <linux/delay.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/control.h> |
| #include <sound/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "cx25821.h" |
| #include "cx25821-reg.h" |
| |
| #define AUDIO_SRAM_CHANNEL SRAM_CH08 |
| |
| #define dprintk(level, fmt, arg...) if (debug >= level) \ |
| printk(KERN_INFO "%s/1: " fmt, chip->dev->name , ## arg) |
| |
| #define dprintk_core(level, fmt, arg...) if (debug >= level) \ |
| printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name , ## arg) |
| |
| /**************************************************************************** |
| Data type declarations - Can be moded to a header file later |
| ****************************************************************************/ |
| |
| static struct snd_card *snd_cx25821_cards[SNDRV_CARDS]; |
| static int devno; |
| |
| struct cx25821_audio_dev { |
| struct cx25821_dev *dev; |
| struct cx25821_dmaqueue q; |
| |
| /* pci i/o */ |
| struct pci_dev *pci; |
| |
| /* audio controls */ |
| int irq; |
| |
| struct snd_card *card; |
| |
| unsigned long iobase; |
| spinlock_t reg_lock; |
| atomic_t count; |
| |
| unsigned int dma_size; |
| unsigned int period_size; |
| unsigned int num_periods; |
| |
| struct videobuf_dmabuf *dma_risc; |
| |
| struct cx25821_buffer *buf; |
| |
| struct snd_pcm_substream *substream; |
| }; |
| |
| |
| /**************************************************************************** |
| 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 }; |
| |
| module_param_array(enable, bool, NULL, 0444); |
| MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled."); |
| |
| module_param_array(index, int, NULL, 0444); |
| MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s)."); |
| |
| /**************************************************************************** |
| Module macros |
| ****************************************************************************/ |
| |
| MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards"); |
| MODULE_AUTHOR("Hiep Huynh"); |
| MODULE_LICENSE("GPL"); |
| MODULE_SUPPORTED_DEVICE("{{Conexant,25821}"); /* "{{Conexant,23881}," */ |
| |
| static unsigned int debug; |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "enable debug messages"); |
| |
| /**************************************************************************** |
| Module specific funtions |
| ****************************************************************************/ |
| /* Constants taken from cx88-reg.h */ |
| #define AUD_INT_DN_RISCI1 (1 << 0) |
| #define AUD_INT_UP_RISCI1 (1 << 1) |
| #define AUD_INT_RDS_DN_RISCI1 (1 << 2) |
| #define AUD_INT_DN_RISCI2 (1 << 4) /* yes, 3 is skipped */ |
| #define AUD_INT_UP_RISCI2 (1 << 5) |
| #define AUD_INT_RDS_DN_RISCI2 (1 << 6) |
| #define AUD_INT_DN_SYNC (1 << 12) |
| #define AUD_INT_UP_SYNC (1 << 13) |
| #define AUD_INT_RDS_DN_SYNC (1 << 14) |
| #define AUD_INT_OPC_ERR (1 << 16) |
| #define AUD_INT_BER_IRQ (1 << 20) |
| #define AUD_INT_MCHG_IRQ (1 << 21) |
| #define GP_COUNT_CONTROL_RESET 0x3 |
| |
| #define PCI_MSK_AUD_EXT (1 << 4) |
| #define PCI_MSK_AUD_INT (1 << 3) |
| /* |
| * BOARD Specific: Sets audio DMA |
| */ |
| |
| static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip) |
| { |
| struct cx25821_buffer *buf = chip->buf; |
| struct cx25821_dev *dev = chip->dev; |
| struct sram_channel *audio_ch = |
| &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]; |
| u32 tmp = 0; |
| |
| /* enable output on the GPIO 0 for the MCLK ADC (Audio) */ |
| cx25821_set_gpiopin_direction(chip->dev, 0, 0); |
| |
| /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ |
| cx_clear(AUD_INT_DMA_CTL, |
| FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); |
| |
| /* setup fifo + format - out channel */ |
| cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl, |
| buf->risc.dma); |
| |
| /* sets bpl size */ |
| cx_write(AUD_A_LNGTH, buf->bpl); |
| |
| /* reset counter */ |
| /* GP_COUNT_CONTROL_RESET = 0x3 */ |
| cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); |
| atomic_set(&chip->count, 0); |
| |
| /* Set the input mode to 16-bit */ |
| tmp = cx_read(AUD_A_CFG); |
| cx_write(AUD_A_CFG, |
| tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE | |
| FLD_AUD_CLK_ENABLE); |
| |
| /* printk(KERN_INFO "DEBUG: Start audio DMA, %d B/line," |
| "cmds_start(0x%x)= %d lines/FIFO, %d periods, " |
| "%d byte buffer\n", buf->bpl, |
| audio_ch->cmds_start, |
| cx_read(audio_ch->cmds_start + 12)>>1, |
| chip->num_periods, buf->bpl *chip->num_periods); |
| */ |
| |
| /* Enables corresponding bits at AUD_INT_STAT */ |
| cx_write(AUD_A_INT_MSK, |
| FLD_AUD_DST_RISCI1 | FLD_AUD_DST_OF | FLD_AUD_DST_SYNC | |
| FLD_AUD_DST_OPC_ERR); |
| |
| /* Clean any pending interrupt bits already set */ |
| cx_write(AUD_A_INT_STAT, ~0); |
| |
| /* enable audio irqs */ |
| cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT); |
| |
| /* Turn on audio downstream fifo and risc enable 0x101 */ |
| tmp = cx_read(AUD_INT_DMA_CTL); |
| cx_set(AUD_INT_DMA_CTL, |
| tmp | (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN)); |
| |
| mdelay(100); |
| return 0; |
| } |
| |
| /* |
| * BOARD Specific: Resets audio DMA |
| */ |
| static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip) |
| { |
| struct cx25821_dev *dev = chip->dev; |
| |
| /* stop dma */ |
| cx_clear(AUD_INT_DMA_CTL, |
| FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); |
| |
| /* disable irqs */ |
| cx_clear(PCI_INT_MSK, PCI_MSK_AUD_INT); |
| cx_clear(AUD_A_INT_MSK, |
| AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | AUD_INT_DN_RISCI2 | |
| AUD_INT_DN_RISCI1); |
| |
| return 0; |
| } |
| |
| #define MAX_IRQ_LOOP 50 |
| |
| /* |
| * BOARD Specific: IRQ dma bits |
| */ |
| static char *cx25821_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 cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status, |
| u32 mask) |
| { |
| struct cx25821_dev *dev = chip->dev; |
| |
| if (0 == (status & mask)) |
| return; |
| |
| cx_write(AUD_A_INT_STAT, status); |
| if (debug > 1 || (status & mask & ~0xff)) |
| cx25821_print_irqbits(dev->name, "irq aud", |
| cx25821_aud_irqs, |
| ARRAY_SIZE(cx25821_aud_irqs), status, |
| mask); |
| |
| /* risc op code error */ |
| if (status & AUD_INT_OPC_ERR) { |
| printk(KERN_WARNING "WARNING %s/1: Audio risc op code error\n", |
| dev->name); |
| |
| cx_clear(AUD_INT_DMA_CTL, |
| FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); |
| cx25821_sram_channel_dump_audio(dev, |
| &cx25821_sram_channels |
| [AUDIO_SRAM_CHANNEL]); |
| } |
| if (status & AUD_INT_DN_SYNC) { |
| printk(KERN_WARNING "WARNING %s: Downstream sync error!\n", |
| dev->name); |
| cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); |
| return; |
| } |
| |
| /* risc1 downstream */ |
| if (status & AUD_INT_DN_RISCI1) { |
| atomic_set(&chip->count, cx_read(AUD_A_GPCNT)); |
| snd_pcm_period_elapsed(chip->substream); |
| } |
| } |
| |
| /* |
| * BOARD Specific: Handles IRQ calls |
| */ |
| static irqreturn_t cx25821_irq(int irq, void *dev_id) |
| { |
| struct cx25821_audio_dev *chip = dev_id; |
| struct cx25821_dev *dev = chip->dev; |
| u32 status, pci_status; |
| u32 audint_status, audint_mask; |
| int loop, handled = 0; |
| int audint_count = 0; |
| |
| audint_status = cx_read(AUD_A_INT_STAT); |
| audint_mask = cx_read(AUD_A_INT_MSK); |
| audint_count = cx_read(AUD_A_GPCNT); |
| status = cx_read(PCI_INT_STAT); |
| |
| for (loop = 0; loop < 1; loop++) { |
| status = cx_read(PCI_INT_STAT); |
| if (0 == status) { |
| status = cx_read(PCI_INT_STAT); |
| audint_status = cx_read(AUD_A_INT_STAT); |
| audint_mask = cx_read(AUD_A_INT_MSK); |
| |
| if (status) { |
| handled = 1; |
| cx_write(PCI_INT_STAT, status); |
| |
| cx25821_aud_irq(chip, audint_status, |
| audint_mask); |
| break; |
| } else |
| goto out; |
| } |
| |
| handled = 1; |
| cx_write(PCI_INT_STAT, status); |
| |
| cx25821_aud_irq(chip, audint_status, audint_mask); |
| } |
| |
| pci_status = cx_read(PCI_INT_STAT); |
| |
| if (handled) |
| cx_write(PCI_INT_STAT, pci_status); |
| |
| out: |
| return IRQ_RETVAL(handled); |
| } |
| |
| static int dsp_buffer_free(struct cx25821_audio_dev *chip) |
| { |
| BUG_ON(!chip->dma_size); |
| |
| dprintk(2, "Freeing buffer\n"); |
| videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc); |
| videobuf_dma_free(chip->dma_risc); |
| btcx_riscmem_free(chip->pci, &chip->buf->risc); |
| kfree(chip->buf); |
| |
| chip->dma_risc = NULL; |
| chip->dma_size = 0; |
| |
| return 0; |
| } |
| |
| /**************************************************************************** |
| ALSA PCM Interface |
| ****************************************************************************/ |
| |
| /* |
| * Digital hardware definition |
| */ |
| #define DEFAULT_FIFO_SIZE 384 |
| static struct snd_pcm_hardware snd_cx25821_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 = 2, |
| .channels_max = 2, |
| /* Analog audio output will be full of clicks and pops if there |
| are not exactly four lines in the SRAM FIFO buffer. */ |
| .period_bytes_min = DEFAULT_FIFO_SIZE / 3, |
| .period_bytes_max = DEFAULT_FIFO_SIZE / 3, |
| .periods_min = 1, |
| .periods_max = AUDIO_LINE_SIZE, |
| /* 128 * 128 = 16384 = 1024 * 16 */ |
| .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE), |
| }; |
| |
| /* |
| * audio pcm capture open callback |
| */ |
| static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream) |
| { |
| struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| int err; |
| unsigned int bpl = 0; |
| |
| if (!chip) { |
| printk(KERN_ERR "DEBUG: cx25821 can't find device struct." |
| " Can't proceed with open\n"); |
| return -ENODEV; |
| } |
| |
| err = |
| snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS); |
| if (err < 0) |
| goto _error; |
| |
| chip->substream = substream; |
| |
| runtime->hw = snd_cx25821_digital_hw; |
| |
| if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size != |
| DEFAULT_FIFO_SIZE) { |
| /* since there are 3 audio Clusters */ |
| bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3; |
| bpl &= ~7; /* must be multiple of 8 */ |
| |
| if (bpl > AUDIO_LINE_SIZE) |
| bpl = AUDIO_LINE_SIZE; |
| |
| runtime->hw.period_bytes_min = bpl; |
| runtime->hw.period_bytes_max = bpl; |
| } |
| |
| return 0; |
| _error: |
| dprintk(1, "Error opening PCM!\n"); |
| return err; |
| } |
| |
| /* |
| * audio close callback |
| */ |
| static int snd_cx25821_close(struct snd_pcm_substream *substream) |
| { |
| return 0; |
| } |
| |
| /* |
| * hw_params callback |
| */ |
| static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *hw_params) |
| { |
| struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
| struct videobuf_dmabuf *dma; |
| |
| struct cx25821_buffer *buf; |
| int ret; |
| |
| 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); |
| BUG_ON(chip->num_periods & (chip->num_periods - 1)); |
| |
| buf = videobuf_sg_alloc(sizeof(*buf)); |
| if (NULL == buf) |
| return -ENOMEM; |
| |
| if (chip->period_size > AUDIO_LINE_SIZE) |
| chip->period_size = AUDIO_LINE_SIZE; |
| |
| buf->vb.memory = V4L2_MEMORY_MMAP; |
| buf->vb.field = V4L2_FIELD_NONE; |
| buf->vb.width = chip->period_size; |
| buf->bpl = chip->period_size; |
| buf->vb.height = chip->num_periods; |
| buf->vb.size = chip->dma_size; |
| |
| dma = videobuf_to_dma(&buf->vb); |
| videobuf_dma_init(dma); |
| |
| ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE, |
| (PAGE_ALIGN(buf->vb.size) >> |
| PAGE_SHIFT)); |
| if (ret < 0) |
| goto error; |
| |
| ret = videobuf_sg_dma_map(&chip->pci->dev, dma); |
| if (ret < 0) |
| goto error; |
| |
| ret = |
| cx25821_risc_databuffer_audio(chip->pci, &buf->risc, dma->sglist, |
| buf->vb.width, buf->vb.height, 1); |
| if (ret < 0) { |
| printk(KERN_INFO |
| "DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); |
| goto error; |
| } |
| |
| /* Loop back to start of program */ |
| 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->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ |
| |
| buf->vb.state = VIDEOBUF_PREPARED; |
| |
| chip->buf = buf; |
| chip->dma_risc = dma; |
| |
| substream->runtime->dma_area = chip->dma_risc->vmalloc; |
| substream->runtime->dma_bytes = chip->dma_size; |
| substream->runtime->dma_addr = 0; |
| |
| return 0; |
| |
| error: |
| kfree(buf); |
| return ret; |
| } |
| |
| /* |
| * hw free callback |
| */ |
| static int snd_cx25821_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct cx25821_audio_dev *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_cx25821_prepare(struct snd_pcm_substream *substream) |
| { |
| return 0; |
| } |
| |
| /* |
| * trigger callback |
| */ |
| static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream, |
| int cmd) |
| { |
| struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
| int err = 0; |
| |
| /* Local interrupts are already disabled by ALSA */ |
| spin_lock(&chip->reg_lock); |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| err = _cx25821_start_audio_dma(chip); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| err = _cx25821_stop_audio_dma(chip); |
| break; |
| default: |
| err = -EINVAL; |
| break; |
| } |
| |
| spin_unlock(&chip->reg_lock); |
| |
| return err; |
| } |
| |
| /* |
| * pointer callback |
| */ |
| static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream |
| *substream) |
| { |
| struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| u16 count; |
| |
| count = atomic_read(&chip->count); |
| |
| return runtime->period_size * (count & (runtime->periods - 1)); |
| } |
| |
| /* |
| * page callback (needed for mmap) |
| */ |
| static struct page *snd_cx25821_page(struct snd_pcm_substream *substream, |
| unsigned long offset) |
| { |
| void *pageptr = substream->runtime->dma_area + offset; |
| |
| return vmalloc_to_page(pageptr); |
| } |
| |
| /* |
| * operators |
| */ |
| static struct snd_pcm_ops snd_cx25821_pcm_ops = { |
| .open = snd_cx25821_pcm_open, |
| .close = snd_cx25821_close, |
| .ioctl = snd_pcm_lib_ioctl, |
| .hw_params = snd_cx25821_hw_params, |
| .hw_free = snd_cx25821_hw_free, |
| .prepare = snd_cx25821_prepare, |
| .trigger = snd_cx25821_card_trigger, |
| .pointer = snd_cx25821_pointer, |
| .page = snd_cx25821_page, |
| }; |
| |
| /* |
| * ALSA create a PCM device: Called when initializing the board. |
| * Sets up the name and hooks up the callbacks |
| */ |
| static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device, |
| char *name) |
| { |
| struct snd_pcm *pcm; |
| int err; |
| |
| err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); |
| if (err < 0) { |
| printk(KERN_INFO "ERROR: FAILED snd_pcm_new() in %s\n", |
| __func__); |
| return err; |
| } |
| pcm->private_data = chip; |
| pcm->info_flags = 0; |
| strcpy(pcm->name, name); |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx25821_pcm_ops); |
| |
| return 0; |
| } |
| |
| /**************************************************************************** |
| 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 |
| */ |
| |
| static struct pci_device_id cx25821_audio_pci_tbl[] __devinitdata = { |
| {0x14f1, 0x0920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| {0,} |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl); |
| |
| /* |
| * Not used in the function snd_cx25821_dev_free so removing |
| * from the file. |
| */ |
| /* |
| static int snd_cx25821_free(struct cx25821_audio_dev *chip) |
| { |
| if (chip->irq >= 0) |
| free_irq(chip->irq, chip); |
| |
| cx25821_dev_unregister(chip->dev); |
| pci_disable_device(chip->pci); |
| |
| return 0; |
| } |
| */ |
| |
| /* |
| * Component Destructor |
| */ |
| static void snd_cx25821_dev_free(struct snd_card *card) |
| { |
| struct cx25821_audio_dev *chip = card->private_data; |
| |
| /* snd_cx25821_free(chip); */ |
| snd_card_free(chip->card); |
| } |
| |
| /* |
| * Alsa Constructor - Component probe |
| */ |
| static int cx25821_audio_initdev(struct cx25821_dev *dev) |
| { |
| struct snd_card *card; |
| struct cx25821_audio_dev *chip; |
| int err; |
| |
| if (devno >= SNDRV_CARDS) { |
| printk(KERN_INFO "DEBUG ERROR: devno >= SNDRV_CARDS %s\n", |
| __func__); |
| return -ENODEV; |
| } |
| |
| if (!enable[devno]) { |
| ++devno; |
| printk(KERN_INFO "DEBUG ERROR: !enable[devno] %s\n", __func__); |
| return -ENOENT; |
| } |
| |
| err = snd_card_create(index[devno], id[devno], THIS_MODULE, |
| sizeof(struct cx25821_audio_dev), &card); |
| if (err < 0) { |
| printk(KERN_INFO |
| "DEBUG ERROR: cannot create snd_card_new in %s\n", |
| __func__); |
| return err; |
| } |
| |
| strcpy(card->driver, "cx25821"); |
| |
| /* Card "creation" */ |
| card->private_free = snd_cx25821_dev_free; |
| chip = (struct cx25821_audio_dev *) card->private_data; |
| spin_lock_init(&chip->reg_lock); |
| |
| chip->dev = dev; |
| chip->card = card; |
| chip->pci = dev->pci; |
| chip->iobase = pci_resource_start(dev->pci, 0); |
| |
| chip->irq = dev->pci->irq; |
| |
| err = request_irq(dev->pci->irq, cx25821_irq, |
| IRQF_SHARED | IRQF_DISABLED, chip->dev->name, chip); |
| |
| if (err < 0) { |
| printk(KERN_ERR "ERROR %s: can't get IRQ %d for ALSA\n", |
| chip->dev->name, dev->pci->irq); |
| goto error; |
| } |
| |
| err = snd_cx25821_pcm(chip, 0, "cx25821 Digital"); |
| if (err < 0) { |
| printk(KERN_INFO |
| "DEBUG ERROR: cannot create snd_cx25821_pcm %s\n", |
| __func__); |
| goto error; |
| } |
| |
| snd_card_set_dev(card, &chip->pci->dev); |
| |
| strcpy(card->shortname, "cx25821"); |
| sprintf(card->longname, "%s at 0x%lx irq %d", chip->dev->name, |
| chip->iobase, chip->irq); |
| strcpy(card->mixername, "CX25821"); |
| |
| printk(KERN_INFO "%s/%i: ALSA support for cx25821 boards\n", |
| card->driver, devno); |
| |
| err = snd_card_register(card); |
| if (err < 0) { |
| printk(KERN_INFO "DEBUG ERROR: cannot register sound card %s\n", |
| __func__); |
| goto error; |
| } |
| |
| snd_cx25821_cards[devno] = card; |
| |
| devno++; |
| return 0; |
| |
| error: |
| snd_card_free(card); |
| return err; |
| } |
| |
| /**************************************************************************** |
| LINUX MODULE INIT |
| ****************************************************************************/ |
| static void cx25821_audio_fini(void) |
| { |
| snd_card_free(snd_cx25821_cards[0]); |
| } |
| |
| /* |
| * Module initializer |
| * |
| * Loops through present saa7134 cards, and assigns an ALSA device |
| * to each one |
| * |
| */ |
| static int cx25821_alsa_init(void) |
| { |
| struct cx25821_dev *dev = NULL; |
| struct list_head *list; |
| |
| list_for_each(list, &cx25821_devlist) { |
| dev = list_entry(list, struct cx25821_dev, devlist); |
| cx25821_audio_initdev(dev); |
| } |
| |
| if (dev == NULL) |
| printk(KERN_INFO |
| "cx25821 ERROR ALSA: no cx25821 cards found\n"); |
| |
| return 0; |
| |
| } |
| |
| late_initcall(cx25821_alsa_init); |
| module_exit(cx25821_audio_fini); |
| |
| /* ----------------------------------------------------------- */ |
| /* |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |