[alsa-devel] [PATCH 1/2] snd-ice1712: add suspend support for ICE1712 chip

[Takashi Iwai]

At Sun, 30 Mar 2014 23:37:30 +0200,
Ondrej Zary wrote:
> 
> Add suspend/resume support for ICE1712 chip.
> Card-specific subdrivers need to enable it and provide callbacks that suspend/resume the codecs.
> 
> Signed-off-by: Ondrej Zary <linux at rainbow-software.org>

Thanks, applied both patches.


Takashi

> ---
>  sound/pci/ice1712/ice1712.c |   85 +++++++++++++++++++++++++++++++++++++++----
>  1 file changed, 77 insertions(+), 8 deletions(-)
> 
> diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
> index 28ec872..dbb0f96 100644
> --- a/sound/pci/ice1712/ice1712.c
> +++ b/sound/pci/ice1712/ice1712.c
> @@ -2428,6 +2428,13 @@ static int snd_ice1712_chip_init(struct snd_ice1712 *ice)
>  		snd_ice1712_write(ice, ICE1712_IREG_CONSUMER_POWERDOWN, 0);
>  	}
>  	snd_ice1712_set_pro_rate(ice, 48000, 1);
> +	/* unmask used interrupts */
> +	outb(((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_2xMPU401) == 0 ?
> +	      ICE1712_IRQ_MPU2 : 0) |
> +	     ((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_NO_CON_AC97) ?
> +	      ICE1712_IRQ_PBKDS | ICE1712_IRQ_CONCAP | ICE1712_IRQ_CONPBK : 0),
> +	     ICEREG(ice, IRQMASK));
> +	outb(0x00, ICEMT(ice, IRQ));
>  
>  	return 0;
>  }
> @@ -2589,6 +2596,7 @@ static int snd_ice1712_create(struct snd_card *card,
>  	ice->pci = pci;
>  	ice->irq = -1;
>  	pci_set_master(pci);
> +	/* disable legacy emulation */
>  	pci_write_config_word(ice->pci, 0x40, 0x807f);
>  	pci_write_config_word(ice->pci, 0x42, 0x0006);
>  	snd_ice1712_proc_init(ice);
> @@ -2625,14 +2633,6 @@ static int snd_ice1712_create(struct snd_card *card,
>  		return -EIO;
>  	}
>  
> -	/* unmask used interrupts */
> -	outb(((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_2xMPU401) == 0 ?
> -	      ICE1712_IRQ_MPU2 : 0) |
> -	     ((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_NO_CON_AC97) ?
> -	      ICE1712_IRQ_PBKDS | ICE1712_IRQ_CONCAP | ICE1712_IRQ_CONPBK : 0),
> -	     ICEREG(ice, IRQMASK));
> -	outb(0x00, ICEMT(ice, IRQ));
> -
>  	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ice, &ops);
>  	if (err < 0) {
>  		snd_ice1712_free(ice);
> @@ -2809,11 +2809,80 @@ static void snd_ice1712_remove(struct pci_dev *pci)
>  	snd_card_free(card);
>  }
>  
> +#ifdef CONFIG_PM_SLEEP
> +static int snd_ice1712_suspend(struct device *dev)
> +{
> +	struct pci_dev *pci = to_pci_dev(dev);
> +	struct snd_card *card = dev_get_drvdata(dev);
> +	struct snd_ice1712 *ice = card->private_data;
> +
> +	if (!ice->pm_suspend_enabled)
> +		return 0;
> +
> +	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
> +
> +	snd_pcm_suspend_all(ice->pcm);
> +	snd_pcm_suspend_all(ice->pcm_pro);
> +	snd_pcm_suspend_all(ice->pcm_ds);
> +	snd_ac97_suspend(ice->ac97);
> +
> +	if (ice->pm_suspend)
> +		ice->pm_suspend(ice);
> +
> +	pci_disable_device(pci);
> +	pci_save_state(pci);
> +	pci_set_power_state(pci, PCI_D3hot);
> +	return 0;
> +}
> +
> +static int snd_ice1712_resume(struct device *dev)
> +{
> +	struct pci_dev *pci = to_pci_dev(dev);
> +	struct snd_card *card = dev_get_drvdata(dev);
> +	struct snd_ice1712 *ice = card->private_data;
> +
> +	if (!ice->pm_suspend_enabled)
> +		return 0;
> +
> +	pci_set_power_state(pci, PCI_D0);
> +	pci_restore_state(pci);
> +
> +	if (pci_enable_device(pci) < 0) {
> +		snd_card_disconnect(card);
> +		return -EIO;
> +	}
> +
> +	pci_set_master(pci);
> +
> +	if (snd_ice1712_chip_init(ice) < 0) {
> +		snd_card_disconnect(card);
> +		return -EIO;
> +	}
> +
> +	if (ice->pm_resume)
> +		ice->pm_resume(ice);
> +
> +	if (ice->ac97)
> +		snd_ac97_resume(ice->ac97);
> +
> +	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
> +	return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(snd_ice1712_pm, snd_ice1712_suspend, snd_ice1712_resume);
> +#define SND_VT1712_PM_OPS	&snd_ice1712_pm
> +#else
> +#define SND_VT1712_PM_OPS	NULL
> +#endif /* CONFIG_PM_SLEEP */
> +
>  static struct pci_driver ice1712_driver = {
>  	.name = KBUILD_MODNAME,
>  	.id_table = snd_ice1712_ids,
>  	.probe = snd_ice1712_probe,
>  	.remove = snd_ice1712_remove,
> +	.driver = {
> +		.pm = SND_VT1712_PM_OPS,
> +	},
>  };
>  
>  module_pci_driver(ice1712_driver);
> -- 
> Ondrej Zary
> 
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