diff options
Diffstat (limited to 'sound/pci/cs5535audio')
| -rw-r--r-- | sound/pci/cs5535audio/Makefile | 8 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio.c | 410 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio.h | 123 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio_pcm.c | 430 |
4 files changed, 971 insertions, 0 deletions
diff --git a/sound/pci/cs5535audio/Makefile b/sound/pci/cs5535audio/Makefile new file mode 100644 index 0000000..08d8ee6 --- /dev/null +++ b/sound/pci/cs5535audio/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for cs5535audio +# + +snd-cs5535audio-objs := cs5535audio.o cs5535audio_pcm.o + +# Toplevel Module Dependency +obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c new file mode 100644 index 0000000..920c857 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio.c @@ -0,0 +1,410 @@ +/* + * Driver for audio on multifunction CS5535 companion device + * Copyright (C) Jaya Kumar + * + * Based on Jaroslav Kysela and Takashi Iwai's examples. + * This work was sponsored by CIS(M) Sdn Bhd. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/moduleparam.h> +#include <asm/io.h> +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/pcm.h> +#include <sound/rawmidi.h> +#include <sound/ac97_codec.h> +#include <sound/initval.h> +#include <sound/asoundef.h> +#include "cs5535audio.h" + +#define DRIVER_NAME "cs5535audio" + + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; + +static struct pci_device_id snd_cs5535audio_ids[] = { + { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO, PCI_ANY_ID, + PCI_ANY_ID, 0, 0, 0, }, + {} +}; + +MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids); + +static void wait_till_cmd_acked(cs5535audio_t *cs5535au, unsigned long timeout) +{ + unsigned long tmp; + do { + tmp = cs_readl(cs5535au, ACC_CODEC_CNTL); + if (!(tmp & CMD_NEW)) + break; + msleep(10); + } while (--timeout); + if (!timeout) + snd_printk(KERN_ERR "Failure writing to cs5535 codec\n"); +} + +static unsigned short snd_cs5535audio_codec_read(cs5535audio_t *cs5535au, + unsigned short reg) +{ + unsigned long regdata; + unsigned long timeout; + unsigned long val; + + regdata = ((unsigned long) reg) << 24; + regdata |= ACC_CODEC_CNTL_RD_CMD; + regdata |= CMD_NEW; + + cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); + wait_till_cmd_acked(cs5535au, 500); + + timeout = 50; + do { + val = cs_readl(cs5535au, ACC_CODEC_STATUS); + if ( (val & STS_NEW) && + ((unsigned long) reg == ((0xFF000000 & val)>>24)) ) + break; + msleep(10); + } while (--timeout); + if (!timeout) + snd_printk(KERN_ERR "Failure reading cs5535 codec\n"); + + return ((unsigned short) val); +} + +static void snd_cs5535audio_codec_write(cs5535audio_t *cs5535au, + unsigned short reg, unsigned short val) +{ + unsigned long regdata; + + regdata = ((unsigned long) reg) << 24; + regdata |= (unsigned long) val; + regdata &= CMD_MASK; + regdata |= CMD_NEW; + regdata &= ACC_CODEC_CNTL_WR_CMD; + + cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); + wait_till_cmd_acked(cs5535au, 50); +} + +static void snd_cs5535audio_ac97_codec_write(ac97_t *ac97, + unsigned short reg, unsigned short val) +{ + cs5535audio_t *cs5535au = ac97->private_data; + snd_cs5535audio_codec_write(cs5535au, reg, val); +} + +static unsigned short snd_cs5535audio_ac97_codec_read(ac97_t *ac97, + unsigned short reg) +{ + cs5535audio_t *cs5535au = ac97->private_data; + return snd_cs5535audio_codec_read(cs5535au, reg); +} + +static void snd_cs5535audio_mixer_free_ac97(ac97_t *ac97) +{ + cs5535audio_t *cs5535audio = ac97->private_data; + cs5535audio->ac97 = NULL; +} + +static int snd_cs5535audio_mixer(cs5535audio_t *cs5535au) +{ + snd_card_t *card = cs5535au->card; + ac97_bus_t *pbus; + ac97_template_t ac97; + int err; + static ac97_bus_ops_t ops = { + .write = snd_cs5535audio_ac97_codec_write, + .read = snd_cs5535audio_ac97_codec_read, + }; + + if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0) + return err; + + memset(&ac97, 0, sizeof(ac97)); + ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM; + ac97.private_data = cs5535au; + ac97.pci = cs5535au->pci; + ac97.private_free = snd_cs5535audio_mixer_free_ac97; + + if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) { + snd_printk("mixer failed\n"); + return err; + } + + return 0; +} + +static void process_bm0_irq(cs5535audio_t *cs5535au) +{ + u8 bm_stat; + spin_lock(&cs5535au->reg_lock); + bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS); + spin_unlock(&cs5535au->reg_lock); + if (bm_stat & EOP) { + cs5535audio_dma_t *dma; + dma = cs5535au->playback_substream->runtime->private_data; + snd_pcm_period_elapsed(cs5535au->playback_substream); + } else { + snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n", + bm_stat); + } +} + +static void process_bm1_irq(cs5535audio_t *cs5535au) +{ + u8 bm_stat; + spin_lock(&cs5535au->reg_lock); + bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS); + spin_unlock(&cs5535au->reg_lock); + if (bm_stat & EOP) { + cs5535audio_dma_t *dma; + dma = cs5535au->capture_substream->runtime->private_data; + snd_pcm_period_elapsed(cs5535au->capture_substream); + } +} + +static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id, + struct pt_regs *regs) +{ + u16 acc_irq_stat; + u8 bm_stat; + unsigned char count; + cs5535audio_t *cs5535au = dev_id; + + if (cs5535au == NULL) + return IRQ_NONE; + + acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS); + + if (!acc_irq_stat) + return IRQ_NONE; + for (count=0; count < 10; count++) { + if (acc_irq_stat & (1<<count)) { + switch (count) { + case IRQ_STS: + cs_readl(cs5535au, ACC_GPIO_STATUS); + break; + case WU_IRQ_STS: + cs_readl(cs5535au, ACC_GPIO_STATUS); + break; + case BM0_IRQ_STS: + process_bm0_irq(cs5535au); + break; + case BM1_IRQ_STS: + process_bm1_irq(cs5535au); + break; + case BM2_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS); + break; + case BM3_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS); + break; + case BM4_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS); + break; + case BM5_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS); + break; + case BM6_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS); + break; + case BM7_IRQ_STS: + bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS); + break; + default: + snd_printk(KERN_ERR "Unexpected irq src\n"); + break; + } + } + } + return IRQ_HANDLED; +} + +static int snd_cs5535audio_free(cs5535audio_t *cs5535au) +{ + synchronize_irq(cs5535au->irq); + pci_set_power_state(cs5535au->pci, 3); + + if (cs5535au->irq >= 0) + free_irq(cs5535au->irq, cs5535au); + + pci_release_regions(cs5535au->pci); + pci_disable_device(cs5535au->pci); + kfree(cs5535au); + return 0; +} + +static int snd_cs5535audio_dev_free(snd_device_t *device) +{ + cs5535audio_t *cs5535au = device->device_data; + return snd_cs5535audio_free(cs5535au); +} + +static int __devinit snd_cs5535audio_create(snd_card_t *card, + struct pci_dev *pci, + cs5535audio_t **rcs5535au) +{ + cs5535audio_t *cs5535au; + + int err; + static snd_device_ops_t ops = { + .dev_free = snd_cs5535audio_dev_free, + }; + + *rcs5535au = NULL; + if ((err = pci_enable_device(pci)) < 0) + return err; + + if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 || + pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) { + printk(KERN_WARNING "unable to get 32bit dma\n"); + err = -ENXIO; + goto pcifail; + } + + cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL); + if (cs5535au == NULL) { + err = -ENOMEM; + goto pcifail; + } + + spin_lock_init(&cs5535au->reg_lock); + cs5535au->card = card; + cs5535au->pci = pci; + cs5535au->irq = -1; + + if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) { + kfree(cs5535au); + goto pcifail; + } + + cs5535au->port = pci_resource_start(pci, 0); + + if (request_irq(pci->irq, snd_cs5535audio_interrupt, + SA_INTERRUPT|SA_SHIRQ, "CS5535 Audio", cs5535au)) { + snd_printk("unable to grab IRQ %d\n", pci->irq); + err = -EBUSY; + goto sndfail; + } + + cs5535au->irq = pci->irq; + pci_set_master(pci); + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, + cs5535au, &ops)) < 0) + goto sndfail; + + snd_card_set_dev(card, &pci->dev); + + *rcs5535au = cs5535au; + return 0; + +sndfail: /* leave the device alive, just kill the snd */ + snd_cs5535audio_free(cs5535au); + return err; + +pcifail: + pci_disable_device(pci); + return err; +} + +static int __devinit snd_cs5535audio_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + snd_card_t *card; + cs5535audio_t *cs5535au; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); + if (card == NULL) + return -ENOMEM; + + if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0) + goto probefail_out; + + if ((err = snd_cs5535audio_mixer(cs5535au)) < 0) + goto probefail_out; + + if ((err = snd_cs5535audio_pcm(cs5535au)) < 0) + goto probefail_out; + + strcpy(card->driver, DRIVER_NAME); + + strcpy(card->shortname, "CS5535 Audio"); + sprintf(card->longname, "%s %s at 0x%lx, irq %i", + card->shortname, card->driver, + cs5535au->port, cs5535au->irq); + + if ((err = snd_card_register(card)) < 0) + goto probefail_out; + + pci_set_drvdata(pci, card); + dev++; + return 0; + +probefail_out: + snd_card_free(card); + return err; +} + +static void __devexit snd_cs5535audio_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); + pci_set_drvdata(pci, NULL); +} + +static struct pci_driver driver = { + .name = DRIVER_NAME, + .id_table = snd_cs5535audio_ids, + .probe = snd_cs5535audio_probe, + .remove = __devexit_p(snd_cs5535audio_remove), +}; + +static int __init alsa_card_cs5535audio_init(void) +{ + return pci_module_init(&driver); +} + +static void __exit alsa_card_cs5535audio_exit(void) +{ + pci_unregister_driver(&driver); +} + +module_init(alsa_card_cs5535audio_init) +module_exit(alsa_card_cs5535audio_exit) + +MODULE_AUTHOR("Jaya Kumar"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("CS5535 Audio"); +MODULE_SUPPORTED_DEVICE("CS5535 Audio"); diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h new file mode 100644 index 0000000..e28177f --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio.h @@ -0,0 +1,123 @@ +#ifndef __SOUND_CS5535AUDIO_H +#define __SOUND_CS5535AUDIO_H + +#define cs_writel(cs5535au, reg, val) outl(val, (int) cs5535au->port + reg) +#define cs_writeb(cs5535au, reg, val) outb(val, (int) cs5535au->port + reg) +#define cs_readl(cs5535au, reg) inl((unsigned short) (cs5535au->port + reg)) +#define cs_readw(cs5535au, reg) inw((unsigned short) (cs5535au->port + reg)) +#define cs_readb(cs5535au, reg) inb((unsigned short) (cs5535au->port + reg)) + +#define CS5535AUDIO_MAX_DESCRIPTORS 128 + +/* acc_codec bar0 reg addrs */ +#define ACC_GPIO_STATUS 0x00 +#define ACC_CODEC_STATUS 0x08 +#define ACC_CODEC_CNTL 0x0C +#define ACC_IRQ_STATUS 0x12 +#define ACC_BM0_CMD 0x20 +#define ACC_BM1_CMD 0x28 +#define ACC_BM2_CMD 0x30 +#define ACC_BM3_CMD 0x38 +#define ACC_BM4_CMD 0x40 +#define ACC_BM5_CMD 0x48 +#define ACC_BM6_CMD 0x50 +#define ACC_BM7_CMD 0x58 +#define ACC_BM0_PRD 0x24 +#define ACC_BM1_PRD 0x2C +#define ACC_BM2_PRD 0x34 +#define ACC_BM3_PRD 0x3C +#define ACC_BM4_PRD 0x44 +#define ACC_BM5_PRD 0x4C +#define ACC_BM6_PRD 0x54 +#define ACC_BM7_PRD 0x5C +#define ACC_BM0_STATUS 0x21 +#define ACC_BM1_STATUS 0x29 +#define ACC_BM2_STATUS 0x31 +#define ACC_BM3_STATUS 0x39 +#define ACC_BM4_STATUS 0x41 +#define ACC_BM5_STATUS 0x49 +#define ACC_BM6_STATUS 0x51 +#define ACC_BM7_STATUS 0x59 +#define ACC_BM0_PNTR 0x60 +#define ACC_BM1_PNTR 0x64 +#define ACC_BM2_PNTR 0x68 +#define ACC_BM3_PNTR 0x6C +#define ACC_BM4_PNTR 0x70 +#define ACC_BM5_PNTR 0x74 +#define ACC_BM6_PNTR 0x78 +#define ACC_BM7_PNTR 0x7C +/* acc_codec bar0 reg bits */ +/* ACC_IRQ_STATUS */ +#define IRQ_STS 0 +#define WU_IRQ_STS 1 +#define BM0_IRQ_STS 2 +#define BM1_IRQ_STS 3 +#define BM2_IRQ_STS 4 +#define BM3_IRQ_STS 5 +#define BM4_IRQ_STS 6 +#define BM5_IRQ_STS 7 +#define BM6_IRQ_STS 8 +#define BM7_IRQ_STS 9 +/* ACC_BMX_STATUS */ +#define EOP (1<<0) +#define BM_EOP_ERR (1<<1) +/* ACC_BMX_CTL */ +#define BM_CTL_EN 0x00000001 +#define BM_CTL_PAUSE 0x00000011 +#define BM_CTL_DIS 0x00000000 +#define BM_CTL_BYTE_ORD_LE 0x00000000 +#define BM_CTL_BYTE_ORD_BE 0x00000100 +/* cs5535 specific ac97 codec register defines */ +#define CMD_MASK 0xFF00FFFF +#define CMD_NEW 0x00010000 +#define STS_NEW 0x00020000 +#define PRM_RDY_STS 0x00800000 +#define ACC_CODEC_CNTL_WR_CMD (~0x80000000) +#define ACC_CODEC_CNTL_RD_CMD 0x80000000 +#define PRD_JMP 0x2000 +#define PRD_EOP 0x4000 +#define PRD_EOT 0x8000 + +typedef struct _snd_cs5535audio cs5535audio_t; +typedef struct snd_cs5535audio_dma cs5535audio_dma_t; +typedef struct snd_cs5535audio_dma_ops cs5535audio_dma_ops_t; + +enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS }; +struct snd_cs5535audio_dma_ops { + int type; + void (*enable_dma)(cs5535audio_t *cs5535au); + void (*disable_dma)(cs5535audio_t *cs5535au); + void (*pause_dma)(cs5535audio_t *cs5535au); + void (*setup_prd)(cs5535audio_t *cs5535au, u32 prd_addr); + u32 (*read_dma_pntr)(cs5535audio_t *cs5535au); +}; + +typedef struct cs5535audio_dma_desc { + u32 addr; + u16 size; + u16 ctlreserved; +} cs5535audio_dma_desc_t; + +struct snd_cs5535audio_dma { + const cs5535audio_dma_ops_t *ops; + struct snd_dma_buffer desc_buf; + snd_pcm_substream_t *substream; + unsigned int buf_addr, buf_bytes; + unsigned int period_bytes, periods; +}; + +struct _snd_cs5535audio { + snd_card_t *card; + ac97_t *ac97; + int irq; + struct pci_dev *pci; + unsigned long port; + spinlock_t reg_lock; + snd_pcm_substream_t *playback_substream; + snd_pcm_substream_t *capture_substream; + cs5535audio_dma_t dmas[NUM_CS5535AUDIO_DMAS]; +}; + +int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535audio); +#endif /* __SOUND_CS5535AUDIO_H */ + diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c new file mode 100644 index 0000000..5802ed9 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio_pcm.c @@ -0,0 +1,430 @@ +/* + * Driver for audio on multifunction CS5535 companion device + * Copyright (C) Jaya Kumar + * + * Based on Jaroslav Kysela and Takashi Iwai's examples. + * This work was sponsored by CIS(M) Sdn Bhd. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * todo: add be fmt support, spdif, pm + */ + +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/pci.h> +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/initval.h> +#include <sound/asoundef.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/ac97_codec.h> +#include "cs5535audio.h" + +static snd_pcm_hardware_t snd_cs5535audio_playback = +{ + .info = ( + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_SYNC_START + ), + .formats = ( + SNDRV_PCM_FMTBIT_S16_LE + ), + .rates = ( + SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 + ), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (64*1024 - 16), + .periods_min = 1, + .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, + .fifo_size = 0, +}; + +static snd_pcm_hardware_t snd_cs5535audio_capture = +{ + .info = ( + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_SYNC_START + ), + .formats = ( + SNDRV_PCM_FMTBIT_S16_LE + ), + .rates = ( + SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 + ), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (64*1024 - 16), + .periods_min = 1, + .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, + .fifo_size = 0, +}; + +static int snd_cs5535audio_playback_open(snd_pcm_substream_t *substream) +{ + int err; + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + snd_pcm_runtime_t *runtime = substream->runtime; + + runtime->hw = snd_cs5535audio_playback; + cs5535au->playback_substream = substream; + runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]); + snd_pcm_set_sync(substream); + if ((err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + return err; + + return 0; +} + +static int snd_cs5535audio_playback_close(snd_pcm_substream_t *substream) +{ + return 0; +} + +#define CS5535AUDIO_DESC_LIST_SIZE \ + PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(cs5535audio_dma_desc_t)) + +static int cs5535audio_build_dma_packets(cs5535audio_t *cs5535au, + cs5535audio_dma_t *dma, + snd_pcm_substream_t *substream, + unsigned int periods, + unsigned int period_bytes) +{ + unsigned int i; + u32 addr, desc_addr, jmpprd_addr; + cs5535audio_dma_desc_t *lastdesc; + + if (periods > CS5535AUDIO_MAX_DESCRIPTORS) + return -ENOMEM; + + if (dma->desc_buf.area == NULL) { + if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, + snd_dma_pci_data(cs5535au->pci), + CS5535AUDIO_DESC_LIST_SIZE+1, + &dma->desc_buf) < 0) + return -ENOMEM; + dma->period_bytes = dma->periods = 0; + } + + if (dma->periods == periods && dma->period_bytes == period_bytes) + return 0; + + /* the u32 cast is okay because in snd*create we succesfully told + pci alloc that we're only 32 bit capable so the uppper will be 0 */ + addr = (u32) substream->runtime->dma_addr; + desc_addr = (u32) dma->desc_buf.addr; + for (i = 0; i < periods; i++) { + cs5535audio_dma_desc_t *desc = + &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[i]; + desc->addr = cpu_to_le32(addr); + desc->size = period_bytes; + desc->ctlreserved = PRD_EOP; + desc_addr += sizeof(cs5535audio_dma_desc_t); + addr += period_bytes; + } + /* we reserved one dummy descriptor at the end to do the PRD jump */ + lastdesc = &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[periods]; + lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr); + lastdesc->size = 0; + lastdesc->ctlreserved = PRD_JMP; + jmpprd_addr = cpu_to_le32(lastdesc->addr + + (sizeof(cs5535audio_dma_desc_t)*periods)); + + dma->period_bytes = period_bytes; + dma->periods = periods; + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->disable_dma(cs5535au); + dma->ops->setup_prd(cs5535au, jmpprd_addr); + spin_unlock_irq(&cs5535au->reg_lock); + return 0; +} + +static void cs5535audio_playback_enable_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN); +} + +static void cs5535audio_playback_disable_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, 0); +} + +static void cs5535audio_playback_pause_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE); +} + +static void cs5535audio_playback_setup_prd(cs5535audio_t *cs5535au, + u32 prd_addr) +{ + cs_writel(cs5535au, ACC_BM0_PRD, prd_addr); +} + +static u32 cs5535audio_playback_read_dma_pntr(cs5535audio_t *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM0_PNTR); +} + +static void cs5535audio_capture_enable_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN); +} + +static void cs5535audio_capture_disable_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, 0); +} + +static void cs5535audio_capture_pause_dma(cs5535audio_t *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE); +} + +static void cs5535audio_capture_setup_prd(cs5535audio_t *cs5535au, + u32 prd_addr) +{ + cs_writel(cs5535au, ACC_BM1_PRD, prd_addr); +} + +static u32 cs5535audio_capture_read_dma_pntr(cs5535audio_t *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM1_PNTR); +} + +static void cs5535audio_clear_dma_packets(cs5535audio_t *cs5535au, + cs5535audio_dma_t *dma, + snd_pcm_substream_t *substream) +{ + snd_dma_free_pages(&dma->desc_buf); + dma->desc_buf.area = NULL; +} + +static int snd_cs5535audio_hw_params(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *hw_params) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + cs5535audio_dma_t *dma = substream->runtime->private_data; + int err; + + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + dma->buf_addr = substream->runtime->dma_addr; + dma->buf_bytes = params_buffer_bytes(hw_params); + + err = cs5535audio_build_dma_packets(cs5535au, dma, substream, + params_periods(hw_params), + params_period_bytes(hw_params)); + return err; +} + +static int snd_cs5535audio_hw_free(snd_pcm_substream_t *substream) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + cs5535audio_dma_t *dma = substream->runtime->private_data; + + cs5535audio_clear_dma_packets(cs5535au, dma, substream); + return snd_pcm_lib_free_pages(substream); +} + +static int snd_cs5535audio_playback_prepare(snd_pcm_substream_t *substream) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE, + substream->runtime->rate); +} + +static int snd_cs5535audio_trigger(snd_pcm_substream_t *substream, int cmd) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + cs5535audio_dma_t *dma = substream->runtime->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->pause_dma(cs5535au); + spin_unlock_irq(&cs5535au->reg_lock); + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->enable_dma(cs5535au); + spin_unlock_irq(&cs5535au->reg_lock); + break; + case SNDRV_PCM_TRIGGER_START: + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->enable_dma(cs5535au); + spin_unlock_irq(&cs5535au->reg_lock); + break; + case SNDRV_PCM_TRIGGER_STOP: + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->disable_dma(cs5535au); + spin_unlock_irq(&cs5535au->reg_lock); + break; + default: + snd_printk(KERN_ERR "unhandled trigger\n"); + return -EINVAL; + break; + } + return 0; +} + +static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(snd_pcm_substream_t + *substream) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + u32 curdma; + cs5535audio_dma_t *dma; + + dma = substream->runtime->private_data; + curdma = dma->ops->read_dma_pntr(cs5535au); + if (curdma < dma->buf_addr) { + snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n", + curdma, dma->buf_addr); + return 0; + } + curdma -= dma->buf_addr; + if (curdma >= dma->buf_bytes) { + snd_printk(KERN_ERR "diff=%x >= %x buf_bytes.\n", + curdma, dma->buf_bytes); + return 0; + } + return bytes_to_frames(substream->runtime, curdma); +} + +static int snd_cs5535audio_capture_open(snd_pcm_substream_t *substream) +{ + int err; + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + snd_pcm_runtime_t *runtime = substream->runtime; + + runtime->hw = snd_cs5535audio_capture; + cs5535au->capture_substream = substream; + runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]); + snd_pcm_set_sync(substream); + if ((err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + return err; + return 0; +} + +static int snd_cs5535audio_capture_close(snd_pcm_substream_t *substream) +{ + return 0; +} + +static int snd_cs5535audio_capture_prepare(snd_pcm_substream_t *substream) +{ + cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream); + return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE, + substream->runtime->rate); +} + +static snd_pcm_ops_t snd_cs5535audio_playback_ops = { + .open = snd_cs5535audio_playback_open, + .close = snd_cs5535audio_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_cs5535audio_hw_params, + .hw_free = snd_cs5535audio_hw_free, + .prepare = snd_cs5535audio_playback_prepare, + .trigger = snd_cs5535audio_trigger, + .pointer = snd_cs5535audio_pcm_pointer, +}; + +static snd_pcm_ops_t snd_cs5535audio_capture_ops = { + .open = snd_cs5535audio_capture_open, + .close = snd_cs5535audio_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_cs5535audio_hw_params, + .hw_free = snd_cs5535audio_hw_free, + .prepare = snd_cs5535audio_capture_prepare, + .trigger = snd_cs5535audio_trigger, + .pointer = snd_cs5535audio_pcm_pointer, +}; + +static void snd_cs5535audio_pcm_free(snd_pcm_t *pcm) +{ + snd_pcm_lib_preallocate_free_for_all(pcm); +} + +static cs5535audio_dma_ops_t snd_cs5535audio_playback_dma_ops = { + .type = CS5535AUDIO_DMA_PLAYBACK, + .enable_dma = cs5535audio_playback_enable_dma, + .disable_dma = cs5535audio_playback_disable_dma, + .setup_prd = cs5535audio_playback_setup_prd, + .pause_dma = cs5535audio_playback_pause_dma, + .read_dma_pntr = cs5535audio_playback_read_dma_pntr, +}; + +static cs5535audio_dma_ops_t snd_cs5535audio_capture_dma_ops = { + .type = CS5535AUDIO_DMA_CAPTURE, + .enable_dma = cs5535audio_capture_enable_dma, + .disable_dma = cs5535audio_capture_disable_dma, + .setup_prd = cs5535audio_capture_setup_prd, + .pause_dma = cs5535audio_capture_pause_dma, + .read_dma_pntr = cs5535audio_capture_read_dma_pntr, +}; + +int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535au) +{ + snd_pcm_t *pcm; + int err; + + err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm); + if (err < 0) + return err; + + cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops = + &snd_cs5535audio_playback_dma_ops; + cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops = + &snd_cs5535audio_capture_dma_ops; + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_cs5535audio_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, + &snd_cs5535audio_capture_ops); + + pcm->private_data = cs5535au; + pcm->private_free = snd_cs5535audio_pcm_free; + pcm->info_flags = 0; + strcpy(pcm->name, "CS5535 Audio"); + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, + snd_dma_pci_data(cs5535au->pci), + 64*1024, 128*1024); + + return 0; +} + |
