cs5535audio.h

Go to the documentation of this file.

#ifndef __SOUND_CS5535AUDIO_H
#define __SOUND_CS5535AUDIO_H

#define cs_writel(cs5535au, reg, val)   outl(val, (cs5535au)->port + reg)
#define cs_writeb(cs5535au, reg, val)   outb(val, (cs5535au)->port + reg)
#define cs_readl(cs5535au, reg)     inl((cs5535au)->port + reg)
#define cs_readw(cs5535au, reg)     inw((cs5535au)->port + reg)
#define cs_readb(cs5535au, reg)     inb((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_BM0_PRD         0x24
#define ACC_BM1_PRD         0x2C
#define ACC_BM0_STATUS          0x21
#define ACC_BM1_STATUS          0x29
#define ACC_BM0_PNTR            0x60
#define ACC_BM1_PNTR            0x64

/* 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
/* ACC_BMX_STATUS */
#define EOP             (1<<0)
#define BM_EOP_ERR          (1<<1)
/* ACC_BMX_CTL */
#define BM_CTL_EN           0x01
#define BM_CTL_PAUSE            0x03
#define BM_CTL_DIS          0x00
#define BM_CTL_BYTE_ORD_LE      0x00
#define BM_CTL_BYTE_ORD_BE      0x04
/* 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 ACC_CODEC_CNTL_LNK_SHUTDOWN 0x00040000
#define ACC_CODEC_CNTL_LNK_WRM_RST  0x00020000
#define PRD_JMP             0x2000
#define PRD_EOP             0x4000
#define PRD_EOT             0x8000

enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS };

struct cs5535audio;

struct cs5535audio_dma_ops {
    int type;
    void (*enable_dma)(struct cs5535audio *cs5535au);
    void (*disable_dma)(struct cs5535audio *cs5535au);
    void (*pause_dma)(struct cs5535audio *cs5535au);
    void (*setup_prd)(struct cs5535audio *cs5535au, u32 prd_addr);
    u32 (*read_prd)(struct cs5535audio *cs5535au);
    u32 (*read_dma_pntr)(struct cs5535audio *cs5535au);
};

struct cs5535audio_dma_desc {
    u32 addr;
    u16 size;
    u16 ctlreserved;
};

struct cs5535audio_dma {
    const struct cs5535audio_dma_ops *ops;
    struct snd_dma_buffer desc_buf;
    struct snd_pcm_substream *substream;
    unsigned int buf_addr, buf_bytes;
    unsigned int period_bytes, periods;
    u32 saved_prd;
    int pcm_open_flag;
};

struct cs5535audio {
    struct snd_card *card;
    struct snd_ac97 *ac97;
    struct snd_pcm *pcm;
    int irq;
    struct pci_dev *pci;
    unsigned long port;
    spinlock_t reg_lock;
    struct snd_pcm_substream *playback_substream;
    struct snd_pcm_substream *capture_substream;
    struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];
};

extern const struct dev_pm_ops snd_cs5535audio_pm;

#ifdef CONFIG_OLPC
void __devinit olpc_prequirks(struct snd_card *card,
        struct snd_ac97_template *ac97);
int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97);
void __devexit olpc_quirks_cleanup(void);
void olpc_analog_input(struct snd_ac97 *ac97, int on);
void olpc_mic_bias(struct snd_ac97 *ac97, int on);

static inline void olpc_capture_open(struct snd_ac97 *ac97)
{
    /* default to Analog Input off */
    olpc_analog_input(ac97, 0);
    /* enable MIC Bias for recording */
    olpc_mic_bias(ac97, 1);
}

static inline void olpc_capture_close(struct snd_ac97 *ac97)
{
    /* disable Analog Input */
    olpc_analog_input(ac97, 0);
    /* disable the MIC Bias (so the recording LED turns off) */
    olpc_mic_bias(ac97, 0);
}
#else
static inline void olpc_prequirks(struct snd_card *card,
        struct snd_ac97_template *ac97) { }
static inline int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
{
    return 0;
}
static inline void olpc_quirks_cleanup(void) { }
static inline void olpc_analog_input(struct snd_ac97 *ac97, int on) { }
static inline void olpc_mic_bias(struct snd_ac97 *ac97, int on) { }
static inline void olpc_capture_open(struct snd_ac97 *ac97) { }
static inline void olpc_capture_close(struct snd_ac97 *ac97) { }
#endif

int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);

#endif /* __SOUND_CS5535AUDIO_H */