diff options
Diffstat (limited to 'sound/pci/cs5535audio')
| -rw-r--r-- | sound/pci/cs5535audio/Makefile | 10 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio.c | 411 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio.h | 140 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio_olpc.c | 192 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio_pcm.c | 454 | ||||
| -rw-r--r-- | sound/pci/cs5535audio/cs5535audio_pm.c | 115 |
6 files changed, 1322 insertions, 0 deletions
diff --git a/sound/pci/cs5535audio/Makefile b/sound/pci/cs5535audio/Makefile new file mode 100644 index 000000000..a8f75f8df --- /dev/null +++ b/sound/pci/cs5535audio/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for cs5535audio +# + +snd-cs5535audio-y := cs5535audio.o cs5535audio_pcm.o +snd-cs5535audio-$(CONFIG_PM_SLEEP) += cs5535audio_pm.o +snd-cs5535audio-$(CONFIG_OLPC) += cs5535audio_olpc.o + +# Toplevel Module Dependency +obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c new file mode 100644 index 000000000..4590086d9 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio.c @@ -0,0 +1,411 @@ +/* + * Driver for audio on multifunction CS5535/6 companion device + * Copyright (C) Jaya Kumar + * + * Based on Jaroslav Kysela and Takashi Iwai's examples. + * This work was sponsored by CIS(M) Sdn Bhd. + * + * 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/delay.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/io.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/pcm.h> +#include <sound/rawmidi.h> +#include <sound/ac97_codec.h> +#include <sound/initval.h> +#include <sound/asoundef.h> +#include "cs5535audio.h" + +#define DRIVER_NAME "cs5535audio" + +static char *ac97_quirk; +module_param(ac97_quirk, charp, 0444); +MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds."); + +static const struct ac97_quirk ac97_quirks[] = { +#if 0 /* Not yet confirmed if all 5536 boards are HP only */ + { + .subvendor = PCI_VENDOR_ID_AMD, + .subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO, + .name = "AMD RDK", + .type = AC97_TUNE_HP_ONLY + }, +#endif + {} +}; + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for " DRIVER_NAME); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for " DRIVER_NAME); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable " DRIVER_NAME); + +static const struct pci_device_id snd_cs5535audio_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) }, + {} +}; + +MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids); + +static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long timeout) +{ + unsigned int tmp; + do { + tmp = cs_readl(cs5535au, ACC_CODEC_CNTL); + if (!(tmp & CMD_NEW)) + break; + udelay(1); + } while (--timeout); + if (!timeout) + dev_err(cs5535au->card->dev, + "Failure writing to cs5535 codec\n"); +} + +static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au, + unsigned short reg) +{ + unsigned int regdata; + unsigned int timeout; + unsigned int val; + + regdata = ((unsigned int) reg) << 24; + regdata |= ACC_CODEC_CNTL_RD_CMD; + regdata |= CMD_NEW; + + cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); + wait_till_cmd_acked(cs5535au, 50); + + timeout = 50; + do { + val = cs_readl(cs5535au, ACC_CODEC_STATUS); + if ((val & STS_NEW) && reg == (val >> 24)) + break; + udelay(1); + } while (--timeout); + if (!timeout) + dev_err(cs5535au->card->dev, + "Failure reading codec reg 0x%x, Last value=0x%x\n", + reg, val); + + return (unsigned short) val; +} + +static void snd_cs5535audio_codec_write(struct cs5535audio *cs5535au, + unsigned short reg, unsigned short val) +{ + unsigned int regdata; + + regdata = ((unsigned int) reg) << 24; + regdata |= val; + regdata &= CMD_MASK; + regdata |= CMD_NEW; + regdata &= ACC_CODEC_CNTL_WR_CMD; + + cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); + wait_till_cmd_acked(cs5535au, 50); +} + +static void snd_cs5535audio_ac97_codec_write(struct snd_ac97 *ac97, + unsigned short reg, unsigned short val) +{ + struct cs5535audio *cs5535au = ac97->private_data; + snd_cs5535audio_codec_write(cs5535au, reg, val); +} + +static unsigned short snd_cs5535audio_ac97_codec_read(struct snd_ac97 *ac97, + unsigned short reg) +{ + struct cs5535audio *cs5535au = ac97->private_data; + return snd_cs5535audio_codec_read(cs5535au, reg); +} + +static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au) +{ + struct snd_card *card = cs5535au->card; + struct snd_ac97_bus *pbus; + struct snd_ac97_template ac97; + int err; + static struct snd_ac97_bus_ops ops = { + .write = snd_cs5535audio_ac97_codec_write, + .read = snd_cs5535audio_ac97_codec_read, + }; + + if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0) + return err; + + memset(&ac97, 0, sizeof(ac97)); + ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM + | AC97_SCAP_POWER_SAVE; + ac97.private_data = cs5535au; + ac97.pci = cs5535au->pci; + + /* set any OLPC-specific scaps */ + olpc_prequirks(card, &ac97); + + if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) { + dev_err(card->dev, "mixer failed\n"); + return err; + } + + snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk); + + err = olpc_quirks(card, cs5535au->ac97); + if (err < 0) { + dev_err(card->dev, "olpc quirks failed\n"); + return err; + } + + return 0; +} + +static void process_bm0_irq(struct cs5535audio *cs5535au) +{ + u8 bm_stat; + spin_lock(&cs5535au->reg_lock); + bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS); + spin_unlock(&cs5535au->reg_lock); + if (bm_stat & EOP) { + snd_pcm_period_elapsed(cs5535au->playback_substream); + } else { + dev_err(cs5535au->card->dev, + "unexpected bm0 irq src, bm_stat=%x\n", + bm_stat); + } +} + +static void process_bm1_irq(struct cs5535audio *cs5535au) +{ + u8 bm_stat; + spin_lock(&cs5535au->reg_lock); + bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS); + spin_unlock(&cs5535au->reg_lock); + if (bm_stat & EOP) + snd_pcm_period_elapsed(cs5535au->capture_substream); +} + +static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id) +{ + u16 acc_irq_stat; + unsigned char count; + struct cs5535audio *cs5535au = dev_id; + + if (cs5535au == NULL) + return IRQ_NONE; + + acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS); + + if (!acc_irq_stat) + return IRQ_NONE; + for (count = 0; count < 4; count++) { + if (acc_irq_stat & (1 << count)) { + switch (count) { + case IRQ_STS: + cs_readl(cs5535au, ACC_GPIO_STATUS); + break; + case WU_IRQ_STS: + cs_readl(cs5535au, ACC_GPIO_STATUS); + break; + case BM0_IRQ_STS: + process_bm0_irq(cs5535au); + break; + case BM1_IRQ_STS: + process_bm1_irq(cs5535au); + break; + default: + dev_err(cs5535au->card->dev, + "Unexpected irq src: 0x%x\n", + acc_irq_stat); + break; + } + } + } + return IRQ_HANDLED; +} + +static int snd_cs5535audio_free(struct cs5535audio *cs5535au) +{ + synchronize_irq(cs5535au->irq); + pci_set_power_state(cs5535au->pci, PCI_D3hot); + + if (cs5535au->irq >= 0) + free_irq(cs5535au->irq, cs5535au); + + pci_release_regions(cs5535au->pci); + pci_disable_device(cs5535au->pci); + kfree(cs5535au); + return 0; +} + +static int snd_cs5535audio_dev_free(struct snd_device *device) +{ + struct cs5535audio *cs5535au = device->device_data; + return snd_cs5535audio_free(cs5535au); +} + +static int snd_cs5535audio_create(struct snd_card *card, + struct pci_dev *pci, + struct cs5535audio **rcs5535au) +{ + struct cs5535audio *cs5535au; + + int err; + static struct snd_device_ops ops = { + .dev_free = snd_cs5535audio_dev_free, + }; + + *rcs5535au = NULL; + if ((err = pci_enable_device(pci)) < 0) + return err; + + if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0 || + dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) { + dev_warn(card->dev, "unable to get 32bit dma\n"); + err = -ENXIO; + goto pcifail; + } + + cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL); + if (cs5535au == NULL) { + err = -ENOMEM; + goto pcifail; + } + + spin_lock_init(&cs5535au->reg_lock); + cs5535au->card = card; + cs5535au->pci = pci; + cs5535au->irq = -1; + + if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) { + kfree(cs5535au); + goto pcifail; + } + + cs5535au->port = pci_resource_start(pci, 0); + + if (request_irq(pci->irq, snd_cs5535audio_interrupt, + IRQF_SHARED, KBUILD_MODNAME, cs5535au)) { + dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); + err = -EBUSY; + goto sndfail; + } + + cs5535au->irq = pci->irq; + pci_set_master(pci); + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, + cs5535au, &ops)) < 0) + goto sndfail; + + *rcs5535au = cs5535au; + return 0; + +sndfail: /* leave the device alive, just kill the snd */ + snd_cs5535audio_free(cs5535au); + return err; + +pcifail: + pci_disable_device(pci); + return err; +} + +static int snd_cs5535audio_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + struct cs5535audio *cs5535au; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + 0, &card); + if (err < 0) + return err; + + if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0) + goto probefail_out; + + card->private_data = cs5535au; + + if ((err = snd_cs5535audio_mixer(cs5535au)) < 0) + goto probefail_out; + + if ((err = snd_cs5535audio_pcm(cs5535au)) < 0) + goto probefail_out; + + strcpy(card->driver, DRIVER_NAME); + + strcpy(card->shortname, "CS5535 Audio"); + sprintf(card->longname, "%s %s at 0x%lx, irq %i", + card->shortname, card->driver, + cs5535au->port, cs5535au->irq); + + if ((err = snd_card_register(card)) < 0) + goto probefail_out; + + pci_set_drvdata(pci, card); + dev++; + return 0; + +probefail_out: + snd_card_free(card); + return err; +} + +static void snd_cs5535audio_remove(struct pci_dev *pci) +{ + olpc_quirks_cleanup(); + snd_card_free(pci_get_drvdata(pci)); +} + +static struct pci_driver cs5535audio_driver = { + .name = KBUILD_MODNAME, + .id_table = snd_cs5535audio_ids, + .probe = snd_cs5535audio_probe, + .remove = snd_cs5535audio_remove, +#ifdef CONFIG_PM_SLEEP + .driver = { + .pm = &snd_cs5535audio_pm, + }, +#endif +}; + +module_pci_driver(cs5535audio_driver); + +MODULE_AUTHOR("Jaya Kumar"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("CS5535 Audio"); +MODULE_SUPPORTED_DEVICE("CS5535 Audio"); diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h new file mode 100644 index 000000000..d84620a0c --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio.h @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __SOUND_CS5535AUDIO_H +#define __SOUND_CS5535AUDIO_H + +#define cs_writel(cs5535au, reg, val) outl(val, (cs5535au)->port + reg) +#define cs_writeb(cs5535au, reg, val) outb(val, (cs5535au)->port + reg) +#define cs_readl(cs5535au, reg) inl((cs5535au)->port + reg) +#define cs_readw(cs5535au, reg) inw((cs5535au)->port + reg) +#define cs_readb(cs5535au, reg) inb((cs5535au)->port + reg) + +#define CS5535AUDIO_MAX_DESCRIPTORS 128 + +/* acc_codec bar0 reg addrs */ +#define ACC_GPIO_STATUS 0x00 +#define ACC_CODEC_STATUS 0x08 +#define ACC_CODEC_CNTL 0x0C +#define ACC_IRQ_STATUS 0x12 +#define ACC_BM0_CMD 0x20 +#define ACC_BM1_CMD 0x28 +#define ACC_BM0_PRD 0x24 +#define ACC_BM1_PRD 0x2C +#define ACC_BM0_STATUS 0x21 +#define ACC_BM1_STATUS 0x29 +#define ACC_BM0_PNTR 0x60 +#define ACC_BM1_PNTR 0x64 + +/* acc_codec bar0 reg bits */ +/* ACC_IRQ_STATUS */ +#define IRQ_STS 0 +#define WU_IRQ_STS 1 +#define BM0_IRQ_STS 2 +#define BM1_IRQ_STS 3 +/* ACC_BMX_STATUS */ +#define EOP (1<<0) +#define BM_EOP_ERR (1<<1) +/* ACC_BMX_CTL */ +#define BM_CTL_EN 0x01 +#define BM_CTL_PAUSE 0x03 +#define BM_CTL_DIS 0x00 +#define BM_CTL_BYTE_ORD_LE 0x00 +#define BM_CTL_BYTE_ORD_BE 0x04 +/* cs5535 specific ac97 codec register defines */ +#define CMD_MASK 0xFF00FFFF +#define CMD_NEW 0x00010000 +#define STS_NEW 0x00020000 +#define PRM_RDY_STS 0x00800000 +#define ACC_CODEC_CNTL_WR_CMD (~0x80000000) +#define ACC_CODEC_CNTL_RD_CMD 0x80000000 +#define ACC_CODEC_CNTL_LNK_SHUTDOWN 0x00040000 +#define ACC_CODEC_CNTL_LNK_WRM_RST 0x00020000 +#define PRD_JMP 0x2000 +#define PRD_EOP 0x4000 +#define PRD_EOT 0x8000 + +enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS }; + +struct cs5535audio; + +struct cs5535audio_dma_ops { + int type; + void (*enable_dma)(struct cs5535audio *cs5535au); + void (*disable_dma)(struct cs5535audio *cs5535au); + void (*pause_dma)(struct cs5535audio *cs5535au); + void (*setup_prd)(struct cs5535audio *cs5535au, u32 prd_addr); + u32 (*read_prd)(struct cs5535audio *cs5535au); + u32 (*read_dma_pntr)(struct cs5535audio *cs5535au); +}; + +struct cs5535audio_dma_desc { + __le32 addr; + __le16 size; + __le16 ctlreserved; +}; + +struct cs5535audio_dma { + const struct cs5535audio_dma_ops *ops; + struct snd_dma_buffer desc_buf; + struct snd_pcm_substream *substream; + unsigned int buf_addr, buf_bytes; + unsigned int period_bytes, periods; + u32 saved_prd; + int pcm_open_flag; +}; + +struct cs5535audio { + struct snd_card *card; + struct snd_ac97 *ac97; + struct snd_pcm *pcm; + int irq; + struct pci_dev *pci; + unsigned long port; + spinlock_t reg_lock; + struct snd_pcm_substream *playback_substream; + struct snd_pcm_substream *capture_substream; + struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS]; +}; + +extern const struct dev_pm_ops snd_cs5535audio_pm; + +#ifdef CONFIG_OLPC +void olpc_prequirks(struct snd_card *card, + struct snd_ac97_template *ac97); +int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97); +void olpc_quirks_cleanup(void); +void olpc_analog_input(struct snd_ac97 *ac97, int on); +void olpc_mic_bias(struct snd_ac97 *ac97, int on); + +static inline void olpc_capture_open(struct snd_ac97 *ac97) +{ + /* default to Analog Input off */ + olpc_analog_input(ac97, 0); + /* enable MIC Bias for recording */ + olpc_mic_bias(ac97, 1); +} + +static inline void olpc_capture_close(struct snd_ac97 *ac97) +{ + /* disable Analog Input */ + olpc_analog_input(ac97, 0); + /* disable the MIC Bias (so the recording LED turns off) */ + olpc_mic_bias(ac97, 0); +} +#else +static inline void olpc_prequirks(struct snd_card *card, + struct snd_ac97_template *ac97) { } +static inline int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) +{ + return 0; +} +static inline void olpc_quirks_cleanup(void) { } +static inline void olpc_analog_input(struct snd_ac97 *ac97, int on) { } +static inline void olpc_mic_bias(struct snd_ac97 *ac97, int on) { } +static inline void olpc_capture_open(struct snd_ac97 *ac97) { } +static inline void olpc_capture_close(struct snd_ac97 *ac97) { } +#endif + +int snd_cs5535audio_pcm(struct cs5535audio *cs5535audio); + +#endif /* __SOUND_CS5535AUDIO_H */ + diff --git a/sound/pci/cs5535audio/cs5535audio_olpc.c b/sound/pci/cs5535audio/cs5535audio_olpc.c new file mode 100644 index 000000000..3b0fdaca8 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio_olpc.c @@ -0,0 +1,192 @@ +/* + * OLPC XO-1 additional sound features + * + * Copyright © 2006 Jaya Kumar <jayakumar.lkml@gmail.com> + * Copyright © 2007-2008 Andres Salomon <dilinger@debian.org> + * + * 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. + */ +#include <sound/core.h> +#include <sound/info.h> +#include <sound/control.h> +#include <sound/ac97_codec.h> +#include <linux/gpio.h> + +#include <asm/olpc.h> +#include "cs5535audio.h" + +#define DRV_NAME "cs5535audio-olpc" + +/* + * OLPC has an additional feature on top of the regular AD1888 codec features. + * It has an Analog Input mode that is switched into (after disabling the + * High Pass Filter) via GPIO. It is supported on B2 and later models. + */ +void olpc_analog_input(struct snd_ac97 *ac97, int on) +{ + int err; + + if (!machine_is_olpc()) + return; + + /* update the High Pass Filter (via AC97_AD_TEST2) */ + err = snd_ac97_update_bits(ac97, AC97_AD_TEST2, + 1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT); + if (err < 0) { + dev_err(ac97->bus->card->dev, + "setting High Pass Filter - %d\n", err); + return; + } + + /* set Analog Input through GPIO */ + gpio_set_value(OLPC_GPIO_MIC_AC, on); +} + +/* + * OLPC XO-1's V_REFOUT is a mic bias enable. + */ +void olpc_mic_bias(struct snd_ac97 *ac97, int on) +{ + int err; + + if (!machine_is_olpc()) + return; + + on = on ? 0 : 1; + err = snd_ac97_update_bits(ac97, AC97_AD_MISC, + 1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT); + if (err < 0) + dev_err(ac97->bus->card->dev, "setting MIC Bias - %d\n", err); +} + +static int olpc_dc_info(struct snd_kcontrol *kctl, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int olpc_dc_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) +{ + v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC); + return 0; +} + +static int olpc_dc_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) +{ + struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); + + olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]); + return 1; +} + +static int olpc_mic_info(struct snd_kcontrol *kctl, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int olpc_mic_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) +{ + struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); + struct snd_ac97 *ac97 = cs5535au->ac97; + int i; + + i = (snd_ac97_read(ac97, AC97_AD_MISC) >> AC97_AD_VREFD_SHIFT) & 0x1; + v->value.integer.value[0] = i ? 0 : 1; + return 0; +} + +static int olpc_mic_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v) +{ + struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl); + + olpc_mic_bias(cs5535au->ac97, v->value.integer.value[0]); + return 1; +} + +static struct snd_kcontrol_new olpc_cs5535audio_ctls[] = { +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "DC Mode Enable", + .info = olpc_dc_info, + .get = olpc_dc_get, + .put = olpc_dc_put, + .private_value = 0, +}, +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "MIC Bias Enable", + .info = olpc_mic_info, + .get = olpc_mic_get, + .put = olpc_mic_put, + .private_value = 0, +}, +}; + +void olpc_prequirks(struct snd_card *card, + struct snd_ac97_template *ac97) +{ + if (!machine_is_olpc()) + return; + + /* invert EAPD if on an OLPC B3 or higher */ + if (olpc_board_at_least(olpc_board_pre(0xb3))) + ac97->scaps |= AC97_SCAP_INV_EAPD; +} + +int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) +{ + struct snd_ctl_elem_id elem; + int i, err; + + if (!machine_is_olpc()) + return 0; + + if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) { + dev_err(card->dev, "unable to allocate MIC GPIO\n"); + return -EIO; + } + gpio_direction_output(OLPC_GPIO_MIC_AC, 0); + + /* drop the original AD1888 HPF control */ + memset(&elem, 0, sizeof(elem)); + elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + strlcpy(elem.name, "High Pass Filter Enable", sizeof(elem.name)); + snd_ctl_remove_id(card, &elem); + + /* drop the original V_REFOUT control */ + memset(&elem, 0, sizeof(elem)); + elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + strlcpy(elem.name, "V_REFOUT Enable", sizeof(elem.name)); + snd_ctl_remove_id(card, &elem); + + /* add the OLPC-specific controls */ + for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) { + err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i], + ac97->private_data)); + if (err < 0) { + gpio_free(OLPC_GPIO_MIC_AC); + return err; + } + } + + /* turn off the mic by default */ + olpc_mic_bias(ac97, 0); + return 0; +} + +void olpc_quirks_cleanup(void) +{ + gpio_free(OLPC_GPIO_MIC_AC); +} diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c new file mode 100644 index 000000000..326caec85 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio_pcm.c @@ -0,0 +1,454 @@ +/* + * Driver for audio on multifunction CS5535 companion device + * Copyright (C) Jaya Kumar + * + * Based on Jaroslav Kysela and Takashi Iwai's examples. + * This work was sponsored by CIS(M) Sdn Bhd. + * + * 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 + * + * todo: add be fmt support, spdif, pm + */ + +#include <linux/init.h> +#include <linux/pci.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/initval.h> +#include <sound/asoundef.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/ac97_codec.h> +#include "cs5535audio.h" + +static const struct snd_pcm_hardware snd_cs5535audio_playback = +{ + .info = ( + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_RESUME + ), + .formats = ( + SNDRV_PCM_FMTBIT_S16_LE + ), + .rates = ( + SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 + ), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (64*1024 - 16), + .periods_min = 1, + .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, + .fifo_size = 0, +}; + +static const struct snd_pcm_hardware snd_cs5535audio_capture = +{ + .info = ( + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID + ), + .formats = ( + SNDRV_PCM_FMTBIT_S16_LE + ), + .rates = ( + SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 + ), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (64*1024 - 16), + .periods_min = 1, + .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, + .fifo_size = 0, +}; + +static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream) +{ + int err; + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + runtime->hw = snd_cs5535audio_playback; + runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_FRONT_DAC]; + snd_pcm_limit_hw_rates(runtime); + cs5535au->playback_substream = substream; + runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]); + if ((err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + return err; + + return 0; +} + +static int snd_cs5535audio_playback_close(struct snd_pcm_substream *substream) +{ + return 0; +} + +#define CS5535AUDIO_DESC_LIST_SIZE \ + PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(struct cs5535audio_dma_desc)) + +static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au, + struct cs5535audio_dma *dma, + struct snd_pcm_substream *substream, + unsigned int periods, + unsigned int period_bytes) +{ + unsigned int i; + u32 addr, desc_addr, jmpprd_addr; + struct cs5535audio_dma_desc *lastdesc; + + if (periods > CS5535AUDIO_MAX_DESCRIPTORS) + return -ENOMEM; + + if (dma->desc_buf.area == NULL) { + if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, + snd_dma_pci_data(cs5535au->pci), + CS5535AUDIO_DESC_LIST_SIZE+1, + &dma->desc_buf) < 0) + return -ENOMEM; + dma->period_bytes = dma->periods = 0; + } + + if (dma->periods == periods && dma->period_bytes == period_bytes) + return 0; + + /* the u32 cast is okay because in snd*create we successfully told + pci alloc that we're only 32 bit capable so the uppper will be 0 */ + addr = (u32) substream->runtime->dma_addr; + desc_addr = (u32) dma->desc_buf.addr; + for (i = 0; i < periods; i++) { + struct cs5535audio_dma_desc *desc = + &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[i]; + desc->addr = cpu_to_le32(addr); + desc->size = cpu_to_le16(period_bytes); + desc->ctlreserved = cpu_to_le16(PRD_EOP); + desc_addr += sizeof(struct cs5535audio_dma_desc); + addr += period_bytes; + } + /* we reserved one dummy descriptor at the end to do the PRD jump */ + lastdesc = &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[periods]; + lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr); + lastdesc->size = 0; + lastdesc->ctlreserved = cpu_to_le16(PRD_JMP); + jmpprd_addr = (u32)dma->desc_buf.addr + + sizeof(struct cs5535audio_dma_desc) * periods; + + dma->substream = substream; + dma->period_bytes = period_bytes; + dma->periods = periods; + spin_lock_irq(&cs5535au->reg_lock); + dma->ops->disable_dma(cs5535au); + dma->ops->setup_prd(cs5535au, jmpprd_addr); + spin_unlock_irq(&cs5535au->reg_lock); + return 0; +} + +static void cs5535audio_playback_enable_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN); +} + +static void cs5535audio_playback_disable_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, 0); +} + +static void cs5535audio_playback_pause_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE); +} + +static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au, + u32 prd_addr) +{ + cs_writel(cs5535au, ACC_BM0_PRD, prd_addr); +} + +static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM0_PRD); +} + +static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM0_PNTR); +} + +static void cs5535audio_capture_enable_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN); +} + +static void cs5535audio_capture_disable_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, 0); +} + +static void cs5535audio_capture_pause_dma(struct cs5535audio *cs5535au) +{ + cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE); +} + +static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au, + u32 prd_addr) +{ + cs_writel(cs5535au, ACC_BM1_PRD, prd_addr); +} + +static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM1_PRD); +} + +static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au) +{ + return cs_readl(cs5535au, ACC_BM1_PNTR); +} + +static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au, + struct cs5535audio_dma *dma, + struct snd_pcm_substream *substream) +{ + snd_dma_free_pages(&dma->desc_buf); + dma->desc_buf.area = NULL; + dma->substream = NULL; +} + +static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + struct cs5535audio_dma *dma = substream->runtime->private_data; + int err; + + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + dma->buf_addr = substream->runtime->dma_addr; + dma->buf_bytes = params_buffer_bytes(hw_params); + + err = cs5535audio_build_dma_packets(cs5535au, dma, substream, + params_periods(hw_params), + params_period_bytes(hw_params)); + if (!err) + dma->pcm_open_flag = 1; + + return err; +} + +static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + struct cs5535audio_dma *dma = substream->runtime->private_data; + + if (dma->pcm_open_flag) { + if (substream == cs5535au->playback_substream) + snd_ac97_update_power(cs5535au->ac97, + AC97_PCM_FRONT_DAC_RATE, 0); + else + snd_ac97_update_power(cs5535au->ac97, + AC97_PCM_LR_ADC_RATE, 0); + dma->pcm_open_flag = 0; + } + cs5535audio_clear_dma_packets(cs5535au, dma, substream); + return snd_pcm_lib_free_pages(substream); +} + +static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE, + substream->runtime->rate); +} + +static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + struct cs5535audio_dma *dma = substream->runtime->private_data; + int err = 0; + + spin_lock(&cs5535au->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + dma->ops->pause_dma(cs5535au); + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + dma->ops->enable_dma(cs5535au); + break; + case SNDRV_PCM_TRIGGER_START: + dma->ops->enable_dma(cs5535au); + break; + case SNDRV_PCM_TRIGGER_RESUME: + dma->ops->enable_dma(cs5535au); + break; + case SNDRV_PCM_TRIGGER_STOP: + dma->ops->disable_dma(cs5535au); + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + dma->ops->disable_dma(cs5535au); + break; + default: + dev_err(cs5535au->card->dev, "unhandled trigger\n"); + err = -EINVAL; + break; + } + spin_unlock(&cs5535au->reg_lock); + return err; +} + +static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(struct snd_pcm_substream + *substream) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + u32 curdma; + struct cs5535audio_dma *dma; + + dma = substream->runtime->private_data; + curdma = dma->ops->read_dma_pntr(cs5535au); + if (curdma < dma->buf_addr) { + dev_err(cs5535au->card->dev, "curdma=%x < %x bufaddr.\n", + curdma, dma->buf_addr); + return 0; + } + curdma -= dma->buf_addr; + if (curdma >= dma->buf_bytes) { + dev_err(cs5535au->card->dev, "diff=%x >= %x buf_bytes.\n", + curdma, dma->buf_bytes); + return 0; + } + return bytes_to_frames(substream->runtime, curdma); +} + +static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream) +{ + int err; + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + runtime->hw = snd_cs5535audio_capture; + runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_ADC]; + snd_pcm_limit_hw_rates(runtime); + cs5535au->capture_substream = substream; + runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]); + if ((err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + return err; + olpc_capture_open(cs5535au->ac97); + return 0; +} + +static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + olpc_capture_close(cs5535au->ac97); + return 0; +} + +static int snd_cs5535audio_capture_prepare(struct snd_pcm_substream *substream) +{ + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); + return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE, + substream->runtime->rate); +} + +static const struct snd_pcm_ops snd_cs5535audio_playback_ops = { + .open = snd_cs5535audio_playback_open, + .close = snd_cs5535audio_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_cs5535audio_hw_params, + .hw_free = snd_cs5535audio_hw_free, + .prepare = snd_cs5535audio_playback_prepare, + .trigger = snd_cs5535audio_trigger, + .pointer = snd_cs5535audio_pcm_pointer, +}; + +static const struct snd_pcm_ops snd_cs5535audio_capture_ops = { + .open = snd_cs5535audio_capture_open, + .close = snd_cs5535audio_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_cs5535audio_hw_params, + .hw_free = snd_cs5535audio_hw_free, + .prepare = snd_cs5535audio_capture_prepare, + .trigger = snd_cs5535audio_trigger, + .pointer = snd_cs5535audio_pcm_pointer, +}; + +static const struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = { + .type = CS5535AUDIO_DMA_PLAYBACK, + .enable_dma = cs5535audio_playback_enable_dma, + .disable_dma = cs5535audio_playback_disable_dma, + .setup_prd = cs5535audio_playback_setup_prd, + .read_prd = cs5535audio_playback_read_prd, + .pause_dma = cs5535audio_playback_pause_dma, + .read_dma_pntr = cs5535audio_playback_read_dma_pntr, +}; + +static const struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = { + .type = CS5535AUDIO_DMA_CAPTURE, + .enable_dma = cs5535audio_capture_enable_dma, + .disable_dma = cs5535audio_capture_disable_dma, + .setup_prd = cs5535audio_capture_setup_prd, + .read_prd = cs5535audio_capture_read_prd, + .pause_dma = cs5535audio_capture_pause_dma, + .read_dma_pntr = cs5535audio_capture_read_dma_pntr, +}; + +int snd_cs5535audio_pcm(struct cs5535audio *cs5535au) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm); + if (err < 0) + return err; + + cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops = + &snd_cs5535audio_playback_dma_ops; + cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops = + &snd_cs5535audio_capture_dma_ops; + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_cs5535audio_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, + &snd_cs5535audio_capture_ops); + + pcm->private_data = cs5535au; + pcm->info_flags = 0; + strcpy(pcm->name, "CS5535 Audio"); + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, + snd_dma_pci_data(cs5535au->pci), + 64*1024, 128*1024); + cs5535au->pcm = pcm; + + return 0; +} + diff --git a/sound/pci/cs5535audio/cs5535audio_pm.c b/sound/pci/cs5535audio/cs5535audio_pm.c new file mode 100644 index 000000000..82bd10b68 --- /dev/null +++ b/sound/pci/cs5535audio/cs5535audio_pm.c @@ -0,0 +1,115 @@ +/* + * 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); + +} + +static int __maybe_unused snd_cs5535audio_suspend(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + 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); + return 0; +} + +static int __maybe_unused snd_cs5535audio_resume(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct cs5535audio *cs5535au = card->private_data; + u32 tmp; + int timeout; + int i; + + /* 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) + dev_err(cs5535au->card->dev, "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; +} + +SIMPLE_DEV_PM_OPS(snd_cs5535audio_pm, snd_cs5535audio_suspend, snd_cs5535audio_resume); |