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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/pci/cs5535audio/cs5535audio.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef __SOUND_CS5535AUDIO_H

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#define __SOUND_CS5535AUDIO_H

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#define cs_writel(cs5535au, reg, val)	outl(val, (cs5535au)->port + reg)

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#define cs_writeb(cs5535au, reg, val)	outb(val, (cs5535au)->port + reg)

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#define cs_readl(cs5535au, reg)		inl((cs5535au)->port + reg)

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#define cs_readw(cs5535au, reg)		inw((cs5535au)->port + reg)

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#define cs_readb(cs5535au, reg)		inb((cs5535au)->port + reg)

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#define CS5535AUDIO_MAX_DESCRIPTORS	128

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/* acc_codec bar0 reg addrs */

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#define ACC_GPIO_STATUS			0x00

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#define ACC_CODEC_STATUS		0x08

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#define ACC_CODEC_CNTL			0x0C

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#define ACC_IRQ_STATUS			0x12

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#define ACC_BM0_CMD			0x20

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#define ACC_BM1_CMD			0x28

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#define ACC_BM0_PRD			0x24

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#define ACC_BM1_PRD			0x2C

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#define ACC_BM0_STATUS			0x21

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#define ACC_BM1_STATUS			0x29

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#define ACC_BM0_PNTR			0x60

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#define ACC_BM1_PNTR			0x64

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/* acc_codec bar0 reg bits */

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/* ACC_IRQ_STATUS */

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#define IRQ_STS 			0

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#define WU_IRQ_STS 			1

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#define BM0_IRQ_STS 			2

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#define BM1_IRQ_STS 			3

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/* ACC_BMX_STATUS */

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#define EOP				(1<<0)

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#define BM_EOP_ERR			(1<<1)

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/* ACC_BMX_CTL */

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#define BM_CTL_EN			0x01

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#define BM_CTL_PAUSE			0x03

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#define BM_CTL_DIS			0x00

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#define BM_CTL_BYTE_ORD_LE		0x00

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#define BM_CTL_BYTE_ORD_BE		0x04

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/* cs5535 specific ac97 codec register defines */

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#define CMD_MASK			0xFF00FFFF

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#define CMD_NEW				0x00010000

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#define STS_NEW				0x00020000

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#define PRM_RDY_STS			0x00800000

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#define ACC_CODEC_CNTL_WR_CMD		(~0x80000000)

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#define ACC_CODEC_CNTL_RD_CMD		0x80000000

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#define ACC_CODEC_CNTL_LNK_SHUTDOWN	0x00040000

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#define ACC_CODEC_CNTL_LNK_WRM_RST	0x00020000

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#define PRD_JMP				0x2000

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#define PRD_EOP				0x4000

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#define PRD_EOT				0x8000

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enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS };

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struct cs5535audio;

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struct cs5535audio_dma_ops {

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	int type;

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	void (*enable_dma)(struct cs5535audio *cs5535au);

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	void (*disable_dma)(struct cs5535audio *cs5535au);

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	void (*pause_dma)(struct cs5535audio *cs5535au);

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	void (*setup_prd)(struct cs5535audio *cs5535au, u32 prd_addr);

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	u32 (*read_prd)(struct cs5535audio *cs5535au);

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	u32 (*read_dma_pntr)(struct cs5535audio *cs5535au);

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};

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struct cs5535audio_dma_desc {

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	__le32 addr;

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	__le16 size;

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	__le16 ctlreserved;

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};

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struct cs5535audio_dma {

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	const struct cs5535audio_dma_ops *ops;

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	struct snd_dma_buffer desc_buf;

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	struct snd_pcm_substream *substream;

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	unsigned int buf_addr, buf_bytes;

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	unsigned int period_bytes, periods;

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	u32 saved_prd;

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	int pcm_open_flag;

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};

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struct cs5535audio {

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	struct snd_card *card;

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	struct snd_ac97 *ac97;

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	struct snd_pcm *pcm;

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	int irq;

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	struct pci_dev *pci;

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	unsigned long port;

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	spinlock_t reg_lock;

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	struct snd_pcm_substream *playback_substream;

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	struct snd_pcm_substream *capture_substream;

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	struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];

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};

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extern const struct dev_pm_ops snd_cs5535audio_pm;

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#ifdef CONFIG_OLPC

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void olpc_prequirks(struct snd_card *card,

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		    struct snd_ac97_template *ac97);

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int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97);

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void olpc_quirks_cleanup(void);

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void olpc_analog_input(struct snd_ac97 *ac97, int on);

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void olpc_mic_bias(struct snd_ac97 *ac97, int on);

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static inline void olpc_capture_open(struct snd_ac97 *ac97)

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{

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	/* default to Analog Input off */

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	olpc_analog_input(ac97, 0);

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	/* enable MIC Bias for recording */

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	olpc_mic_bias(ac97, 1);

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}

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static inline void olpc_capture_close(struct snd_ac97 *ac97)

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{

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	/* disable Analog Input */

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	olpc_analog_input(ac97, 0);

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	/* disable the MIC Bias (so the recording LED turns off) */

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	olpc_mic_bias(ac97, 0);

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}

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#else

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static inline void olpc_prequirks(struct snd_card *card,

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		struct snd_ac97_template *ac97) { }

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static inline int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)

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{

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	return 0;

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}

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static inline void olpc_quirks_cleanup(void) { }

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static inline void olpc_analog_input(struct snd_ac97 *ac97, int on) { }

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static inline void olpc_mic_bias(struct snd_ac97 *ac97, int on) { }

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static inline void olpc_capture_open(struct snd_ac97 *ac97) { }

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static inline void olpc_capture_close(struct snd_ac97 *ac97) { }

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#endif

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int snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);

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#endif /* __SOUND_CS5535AUDIO_H */

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