222fa0b0d2
In the suspend path, we currently save the PRD registers and then disable DMA. This is racy; the sound hardware might update the PRD register as it finishes processing some DMA pages between when we've saved the PRD registers and when DMA actually gets disabled. Furthermore, we actively check whether or not DMA is enabled before saving PRD registers; there's no reason to do that, as the PRD registers should not update when we twiddle the ACC_BM[x]_CMD register(s). Worst case, we save the PRD registers twice; even powering down the ACC shouldn't mess with the PRD registers (according to the 5536 data sheet, section 5.3.7.4, power-down procedure). This patch reworks all that to first disable DMA, and then save PRD registers. Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
#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_BM2_CMD 0x30
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#define ACC_BM3_CMD 0x38
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#define ACC_BM4_CMD 0x40
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#define ACC_BM5_CMD 0x48
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#define ACC_BM6_CMD 0x50
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#define ACC_BM7_CMD 0x58
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#define ACC_BM0_PRD 0x24
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#define ACC_BM1_PRD 0x2C
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#define ACC_BM2_PRD 0x34
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#define ACC_BM3_PRD 0x3C
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#define ACC_BM4_PRD 0x44
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#define ACC_BM5_PRD 0x4C
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#define ACC_BM6_PRD 0x54
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#define ACC_BM7_PRD 0x5C
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#define ACC_BM0_STATUS 0x21
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#define ACC_BM1_STATUS 0x29
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#define ACC_BM2_STATUS 0x31
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#define ACC_BM3_STATUS 0x39
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#define ACC_BM4_STATUS 0x41
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#define ACC_BM5_STATUS 0x49
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#define ACC_BM6_STATUS 0x51
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#define ACC_BM7_STATUS 0x59
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#define ACC_BM0_PNTR 0x60
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#define ACC_BM1_PNTR 0x64
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#define ACC_BM2_PNTR 0x68
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#define ACC_BM3_PNTR 0x6C
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#define ACC_BM4_PNTR 0x70
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#define ACC_BM5_PNTR 0x74
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#define ACC_BM6_PNTR 0x78
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#define ACC_BM7_PNTR 0x7C
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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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#define BM2_IRQ_STS 4
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#define BM3_IRQ_STS 5
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#define BM4_IRQ_STS 6
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#define BM5_IRQ_STS 7
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#define BM6_IRQ_STS 8
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#define BM7_IRQ_STS 9
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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 0x00000001
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#define BM_CTL_PAUSE 0x00000011
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#define BM_CTL_DIS 0x00000000
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#define BM_CTL_BYTE_ORD_LE 0x00000000
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#define BM_CTL_BYTE_ORD_BE 0x00000100
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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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u32 addr;
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u16 size;
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u16 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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};
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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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int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
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int snd_cs5535audio_resume(struct pci_dev *pci);
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int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);
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#endif /* __SOUND_CS5535AUDIO_H */
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