[alsa-devel] Patch for suspend/resume in ICE1724 for Audiotrak Prodigy HD2
Takashi Iwai
tiwai at suse.de
Tue Jun 23 12:55:28 CEST 2009
At Mon, 22 Jun 2009 12:46:48 -0700,
Igor Chernyshev wrote:
>
> Hi Takashi,
>
> here is the patch for:
>
> Supported suspend/resume in Audiotrak Prodigy HD2
>
> Please, let me know if you want some special testing, patch
> formatting, etc on my part. So far I did suspend-resume with MythTV
> playing AVI and DVD through RCA. In original ALSA 1.0.20, MythTV
> playback upon resume would start ~20% faster than before suspend,
> volume would go to max (or above? given how awfully loud the noises
> were) and there would be ton of noises. After the change, resume gives
> clean playback in MythTV. I suspect that I may not have covered
> different scenarios (e.g. driver implies there may be 3 pcm's, ac97,
> and mic) in my testing.
>
> Thanks,
> Igor
>
> Here is the part I know about : : )))
>
> Signed-off-by: Igor Chernyshev <igor.ch75+alsa at gmail.com>
Thanks for the patch.
Just looking through the changes, and it looks mostly OK.
Small comments.
>
> diff -uN alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/ice1712.h
> alsa-driver-1.0.20/alsa-kernel/pci/ice1712/ice1712.h
> --- alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/ice1712.h 2009-05-06
> 00:06:04.000000000 -0700
> +++ alsa-driver-1.0.20/alsa-kernel/pci/ice1712/ice1712.h 2009-06-19
> 22:27:12.000000000 -0700
> @@ -378,6 +378,15 @@
> unsigned char (*set_mclk)(struct snd_ice1712 *ice, unsigned int rate);
> void (*set_spdif_clock)(struct snd_ice1712 *ice);
>
> +#ifdef CONFIG_PM
> + int (*pm_suspend)(struct snd_ice1712 *);
> + int (*pm_resume)(struct snd_ice1712 *);
> + int pm_suspend_enabled:1;
> + int pm_saved_is_spdif_master:1;
> + unsigned int pm_saved_spdif_ctrl;
> + unsigned char pm_saved_spdif_cfg;
> + unsigned long pm_saved_route;
This shouldn't be long but int. Long can be 64bit unnecessarily.
> +#endif
> };
>
>
> diff -uN alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/ice1724.c
> alsa-driver-1.0.20/alsa-kernel/pci/ice1712/ice1724.c
> --- alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/ice1724.c 2009-05-06
> 00:06:04.000000000 -0700
> +++ alsa-driver-1.0.20/alsa-kernel/pci/ice1712/ice1724.c 2009-06-22
> 12:13:26.000000000 -0700
> @@ -568,6 +568,10 @@
> spin_unlock(&ice->reg_lock);
> break;
>
> + case SNDRV_PCM_TRIGGER_SUSPEND:
> + case SNDRV_PCM_TRIGGER_RESUME:
> + break;
At least, TRIGGER_SUSPEND neees to stop the PCM stream.
> default:
> return -EINVAL;
> }
> @@ -2266,6 +2270,14 @@
>
> outb(0, ICEREG1724(ice, POWERDOWN));
>
> + /* MPU_RX and TX irq masks are cleared later dynamically */
> + outb(VT1724_IRQ_MPU_RX | VT1724_IRQ_MPU_TX , ICEREG1724(ice, IRQMASK));
> +
> + /* don't handle FIFO overrun/underruns (just yet),
> + * since they cause machine lockups
> + */
> + outb(VT1724_MULTI_FIFO_ERR, ICEMT1724(ice, DMA_INT_MASK));
> +
This is fine, but you need to remove __devinit from this function.
> +#ifdef CONFIG_PM
> +static int snd_vt1724_suspend(struct pci_dev *pci, pm_message_t state)
> +{
> + struct snd_card *card = pci_get_drvdata(pci);
> + struct snd_ice1712 *ice = card->private_data;
> +
> + if (!ice->pm_suspend_enabled)
> + return 0;
> +
> + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
> +
> + if (ice->pcm)
> + snd_pcm_suspend_all(ice->pcm);
> + if (ice->pcm_pro)
> + snd_pcm_suspend_all(ice->pcm_pro);
> + if (ice->pcm_ds)
> + snd_pcm_suspend_all(ice->pcm_ds);
> + if (ice->ac97)
> + snd_ac97_suspend(ice->ac97);
No need for NULL check here. All these check NULL by themselves.
> + spin_lock_irq(&ice->reg_lock);
> + ice->pm_saved_is_spdif_master = ice->is_spdif_master(ice);
> + ice->pm_saved_spdif_ctrl = inw(ICEMT1724(ice, SPDIF_CTRL));
> + ice->pm_saved_spdif_cfg = inb(ICEREG1724(ice, SPDIF_CFG));
> + ice->pm_saved_route = inl(ICEMT1724(ice, ROUTE_PLAYBACK));
> + spin_unlock_irq(&ice->reg_lock);
> +
> + if (ice->pm_suspend)
> + ice->pm_suspend(ice);
> +
> + pci_disable_device(pci);
> + pci_save_state(pci);
> + pci_set_power_state(pci, pci_choose_state(pci, state));
> + return 0;
> +}
> +
> +static int snd_vt1724_resume(struct pci_dev *pci)
> +{
> + struct snd_card *card = pci_get_drvdata(pci);
> + 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);
> +
> + snd_vt1724_chip_reset(ice);
> +
> + if (snd_vt1724_chip_init(ice) < 0) {
> + snd_card_disconnect(card);
> + return -EIO;
> + }
> +
> + if (ice->pm_resume)
> + ice->pm_resume(ice);
> +
> + spin_lock_irq(&ice->reg_lock);
> + if (ice->pm_saved_is_spdif_master) {
> + /* switching to external clock via SPDIF */
> + ice->set_spdif_clock(ice);
> + } else {
> + /* internal on-card clock */
> + spin_unlock_irq(&ice->reg_lock);
> + snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 1);
> + spin_lock_irq(&ice->reg_lock);
> + }
These are basically no need to protect with spinlock, at least,
in this function...
> + update_spdif_bits(ice, ice->pm_saved_spdif_ctrl);
> +
> + outb(ice->pm_saved_spdif_cfg, ICEREG1724(ice, SPDIF_CFG));
> + outl(ice->pm_saved_route, ICEMT1724(ice, ROUTE_PLAYBACK));
> + spin_unlock_irq(&ice->reg_lock);
> +
> + if (ice->ac97)
> + snd_ac97_resume(ice->ac97);
> +
> + snd_power_change_state(card, SNDRV_CTL_POWER_D0);
> + return 0;
> +}
> +#endif
> +
> static struct pci_driver driver = {
> .name = "ICE1724",
> .id_table = snd_vt1724_ids,
> .probe = snd_vt1724_probe,
> .remove = __devexit_p(snd_vt1724_remove),
> +#ifdef CONFIG_PM
> + .suspend = snd_vt1724_suspend,
> + .resume = snd_vt1724_resume,
> +#endif
> };
>
> static int __init alsa_card_ice1724_init(void)
> diff -uN alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/prodigy_hifi.c
> alsa-driver-1.0.20/alsa-kernel/pci/ice1712/prodigy_hifi.c
> --- alsa-driver-1.0.20.orig/alsa-kernel/pci/ice1712/prodigy_hifi.c 2009-05-06
> 00:06:04.000000000 -0700
> +++ alsa-driver-1.0.20/alsa-kernel/pci/ice1712/prodigy_hifi.c 2009-06-22
> 12:06:28.000000000 -0700
> @@ -1077,8 +1077,7 @@
> /*
> * initialize the chip
> */
> -static int __devinit prodigy_hd2_init(struct snd_ice1712 *ice)
> -{
> +static void ak4396_init(struct snd_ice1712 *ice) {
> static unsigned short ak4396_inits[] = {
> AK4396_CTRL1, 0x87, /* I2S Normal Mode, 24 bit */
> AK4396_CTRL2, 0x02,
> @@ -1087,9 +1086,38 @@
> AK4396_RCH_ATT, 0x00,
> };
>
> - struct prodigy_hifi_spec *spec;
> unsigned int i;
>
> + /* initialize ak4396 codec */
> + /* reset codec */
> + ak4396_write(ice, AK4396_CTRL1, 0x86);
> + msleep(100);
> + ak4396_write(ice, AK4396_CTRL1, 0x87);
> +
> + for (i = 0; i < ARRAY_SIZE(ak4396_inits); i += 2)
> + ak4396_write(ice, ak4396_inits[i], ak4396_inits[i+1]);
> +}
> +
> +#ifdef CONFIG_PM
> +static int __devinit prodigy_hd2_resume(struct snd_ice1712 *ice)
> +{
> + /* initialize ak4396 codec and restore previous mixer volumes */
> + struct prodigy_hifi_spec *spec = ice->spec;
> + int i;
> + mutex_lock(&ice->gpio_mutex);
> + ak4396_init(ice);
> + for (i = 0; i < 2; i++) {
> + ak4396_write(ice, AK4396_LCH_ATT + i, spec->vol[i] & 0xff);
> + }
> + mutex_unlock(&ice->gpio_mutex);
> + return 0;
> +}
> +#endif
> +
> +static int __devinit prodigy_hd2_init(struct snd_ice1712 *ice)
> +{
> + struct prodigy_hifi_spec *spec;
> +
> ice->vt1720 = 0;
> ice->vt1724 = 1;
>
> @@ -1112,14 +1140,12 @@
> return -ENOMEM;
> ice->spec = spec;
>
> - /* initialize ak4396 codec */
> - /* reset codec */
> - ak4396_write(ice, AK4396_CTRL1, 0x86);
> - msleep(100);
> - ak4396_write(ice, AK4396_CTRL1, 0x87);
> -
> - for (i = 0; i < ARRAY_SIZE(ak4396_inits); i += 2)
> - ak4396_write(ice, ak4396_inits[i], ak4396_inits[i+1]);
> +#ifdef CONFIG_PM
> + ice->pm_resume = &prodigy_hd2_resume;
> + ice->pm_suspend_enabled = 1;
> +#endif
> +
> + ak4396_init(ice);
>
> return 0;
> }
Last but not least, try to run $LINUX/scripts/checkpatch.pl to your
patch once and fix the issues suggested there.
thanks,
Takashi
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