diff options
| author | Igor Chernyshev <igor.ch75+alsa at gmail.com> | 2009-06-25 09:31:07 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-06-25 09:31:07 +0200 |
| commit | b40e9538124fc9b9333e3eea0fc514da4a185dae (patch) | |
| tree | 46cc0b55037581e2da8ae88d01164abd60004279 /sound/pci/ice1712/prodigy_hifi.c | |
| parent | 28d0325ce6e0a52f53d8af687e6427fee59004d3 (diff) | |
ALSA: ice1724 - Patch for suspend/resume for Audiotrak Prodigy HD2
I've built a small HTPC and had to add suspend/resume support in ice1724
driver. There seem to be 3 existing bugs related to that:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4413
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3748
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2314
Due to hardware (un)availability, I only enabled the fix for Audiotrak
Prodigy HD2 card, which is installed in my HTPC. However, most of my code
should be reusable in the future on other ice1724-based cards as well (as
long as people add card-specific peices of code). The fix is currently based
on ALSA 1.0.20 and works on my MythBuntu 9.04 HTPC (using 2.6.28-11 kernel).
Signed-off-by: Igor Chernyshev <igor.ch75+alsa at gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ice1712/prodigy_hifi.c')
| -rw-r--r-- | sound/pci/ice1712/prodigy_hifi.c | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/sound/pci/ice1712/prodigy_hifi.c b/sound/pci/ice1712/prodigy_hifi.c index 043a93879bd..c75515f5be6 100644 --- a/sound/pci/ice1712/prodigy_hifi.c +++ b/sound/pci/ice1712/prodigy_hifi.c @@ -1077,7 +1077,7 @@ static int __devinit prodigy_hifi_init(struct snd_ice1712 *ice) /* * 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 */ @@ -1087,9 +1087,37 @@ static int __devinit prodigy_hd2_init(struct snd_ice1712 *ice) 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 @@ static int __devinit prodigy_hd2_init(struct snd_ice1712 *ice) 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; } |