diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pm.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pm.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pm.c b/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pm.c deleted file mode 100644 index 185b0008..00000000 --- a/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pm.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Power management for audio on multifunction CS5535 companion device - * Copyright (C) Jaya Kumar - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <sound/core.h> -#include <sound/control.h> -#include <sound/initval.h> -#include <sound/asoundef.h> -#include <sound/pcm.h> -#include <sound/ac97_codec.h> -#include "cs5535audio.h" - -static void snd_cs5535audio_stop_hardware(struct cs5535audio *cs5535au) -{ - /* - we depend on snd_ac97_suspend to tell the - AC97 codec to shutdown. the amd spec suggests - that the LNK_SHUTDOWN be done at the same time - that the codec power-down is issued. instead, - we do it just after rather than at the same - time. excluding codec specific build_ops->suspend - ac97 powerdown hits: - 0x8000 EAPD - 0x4000 Headphone amplifier - 0x0300 ADC & DAC - 0x0400 Analog Mixer powerdown (Vref on) - I am not sure if this is the best that we can do. - The remainder to be investigated are: - - analog mixer (vref off) 0x0800 - - AC-link powerdown 0x1000 - - codec internal clock 0x2000 - */ - - /* set LNK_SHUTDOWN to shutdown AC link */ - cs_writel(cs5535au, ACC_CODEC_CNTL, ACC_CODEC_CNTL_LNK_SHUTDOWN); - -} - -int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state) -{ - struct snd_card *card = pci_get_drvdata(pci); - struct cs5535audio *cs5535au = card->private_data; - int i; - - snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); - snd_pcm_suspend_all(cs5535au->pcm); - snd_ac97_suspend(cs5535au->ac97); - for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) { - struct cs5535audio_dma *dma = &cs5535au->dmas[i]; - if (dma && dma->substream) - dma->saved_prd = dma->ops->read_prd(cs5535au); - } - /* save important regs, then disable aclink in hw */ - snd_cs5535audio_stop_hardware(cs5535au); - - if (pci_save_state(pci)) { - printk(KERN_ERR "cs5535audio: pci_save_state failed!\n"); - return -EIO; - } - pci_disable_device(pci); - pci_set_power_state(pci, pci_choose_state(pci, state)); - return 0; -} - -int snd_cs5535audio_resume(struct pci_dev *pci) -{ - struct snd_card *card = pci_get_drvdata(pci); - struct cs5535audio *cs5535au = card->private_data; - u32 tmp; - int timeout; - int i; - - pci_set_power_state(pci, PCI_D0); - pci_restore_state(pci); - if (pci_enable_device(pci) < 0) { - printk(KERN_ERR "cs5535audio: pci_enable_device failed, " - "disabling device\n"); - snd_card_disconnect(card); - return -EIO; - } - pci_set_master(pci); - - /* set LNK_WRM_RST to reset AC link */ - cs_writel(cs5535au, ACC_CODEC_CNTL, ACC_CODEC_CNTL_LNK_WRM_RST); - - timeout = 50; - do { - tmp = cs_readl(cs5535au, ACC_CODEC_STATUS); - if (tmp & PRM_RDY_STS) - break; - udelay(1); - } while (--timeout); - - if (!timeout) - snd_printk(KERN_ERR "Failure getting AC Link ready\n"); - - /* set up rate regs, dma. actual initiation is done in trig */ - for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) { - struct cs5535audio_dma *dma = &cs5535au->dmas[i]; - if (dma && dma->substream) { - dma->substream->ops->prepare(dma->substream); - dma->ops->setup_prd(cs5535au, dma->saved_prd); - } - } - - /* we depend on ac97 to perform the codec power up */ - snd_ac97_resume(cs5535au->ac97); - snd_power_change_state(card, SNDRV_CTL_POWER_D0); - - return 0; -} - |