diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/mips/sgio2audio.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/mips/sgio2audio.c | 979 |
1 files changed, 0 insertions, 979 deletions
diff --git a/ANDROID_3.4.5/sound/mips/sgio2audio.c b/ANDROID_3.4.5/sound/mips/sgio2audio.c deleted file mode 100644 index ceaa593e..00000000 --- a/ANDROID_3.4.5/sound/mips/sgio2audio.c +++ /dev/null @@ -1,979 +0,0 @@ -/* - * Sound driver for Silicon Graphics O2 Workstations A/V board audio. - * - * Copyright 2003 Vivien Chappelier <vivien.chappelier@linux-mips.org> - * Copyright 2008 Thomas Bogendoerfer <tsbogend@alpha.franken.de> - * Mxier part taken from mace_audio.c: - * Copyright 2007 Thorben Jändling <tj.trevelyan@gmail.com> - * - * 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/delay.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/module.h> - -#include <asm/ip32/ip32_ints.h> -#include <asm/ip32/mace.h> - -#include <sound/core.h> -#include <sound/control.h> -#include <sound/pcm.h> -#define SNDRV_GET_ID -#include <sound/initval.h> -#include <sound/ad1843.h> - - -MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>"); -MODULE_DESCRIPTION("SGI O2 Audio"); -MODULE_LICENSE("GPL"); -MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}"); - -static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ -static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ - -module_param(index, int, 0444); -MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard."); -module_param(id, charp, 0444); -MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard."); - - -#define AUDIO_CONTROL_RESET BIT(0) /* 1: reset audio interface */ -#define AUDIO_CONTROL_CODEC_PRESENT BIT(1) /* 1: codec detected */ - -#define CODEC_CONTROL_WORD_SHIFT 0 -#define CODEC_CONTROL_READ BIT(16) -#define CODEC_CONTROL_ADDRESS_SHIFT 17 - -#define CHANNEL_CONTROL_RESET BIT(10) /* 1: reset channel */ -#define CHANNEL_DMA_ENABLE BIT(9) /* 1: enable DMA transfer */ -#define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5) /* interrupt disabled */ -#define CHANNEL_INT_THRESHOLD_25 (1 << 5) /* int on buffer >25% full */ -#define CHANNEL_INT_THRESHOLD_50 (2 << 5) /* int on buffer >50% full */ -#define CHANNEL_INT_THRESHOLD_75 (3 << 5) /* int on buffer >75% full */ -#define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5) /* int on buffer empty */ -#define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5) /* int on buffer !empty */ -#define CHANNEL_INT_THRESHOLD_FULL (6 << 5) /* int on buffer empty */ -#define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5) /* int on buffer !empty */ - -#define CHANNEL_RING_SHIFT 12 -#define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT) -#define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1) - -#define CHANNEL_LEFT_SHIFT 40 -#define CHANNEL_RIGHT_SHIFT 8 - -struct snd_sgio2audio_chan { - int idx; - struct snd_pcm_substream *substream; - int pos; - snd_pcm_uframes_t size; - spinlock_t lock; -}; - -/* definition of the chip-specific record */ -struct snd_sgio2audio { - struct snd_card *card; - - /* codec */ - struct snd_ad1843 ad1843; - spinlock_t ad1843_lock; - - /* channels */ - struct snd_sgio2audio_chan channel[3]; - - /* resources */ - void *ring_base; - dma_addr_t ring_base_dma; -}; - -/* AD1843 access */ - -/* - * read_ad1843_reg returns the current contents of a 16 bit AD1843 register. - * - * Returns unsigned register value on success, -errno on failure. - */ -static int read_ad1843_reg(void *priv, int reg) -{ - struct snd_sgio2audio *chip = priv; - int val; - unsigned long flags; - - spin_lock_irqsave(&chip->ad1843_lock, flags); - - writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | - CODEC_CONTROL_READ, &mace->perif.audio.codec_control); - wmb(); - val = readq(&mace->perif.audio.codec_control); /* flush bus */ - udelay(200); - - val = readq(&mace->perif.audio.codec_read); - - spin_unlock_irqrestore(&chip->ad1843_lock, flags); - return val; -} - -/* - * write_ad1843_reg writes the specified value to a 16 bit AD1843 register. - */ -static int write_ad1843_reg(void *priv, int reg, int word) -{ - struct snd_sgio2audio *chip = priv; - int val; - unsigned long flags; - - spin_lock_irqsave(&chip->ad1843_lock, flags); - - writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | - (word << CODEC_CONTROL_WORD_SHIFT), - &mace->perif.audio.codec_control); - wmb(); - val = readq(&mace->perif.audio.codec_control); /* flush bus */ - udelay(200); - - spin_unlock_irqrestore(&chip->ad1843_lock, flags); - return 0; -} - -static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); - - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 2; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843, - (int)kcontrol->private_value); - return 0; -} - -static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); - int vol; - - vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value); - - ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF; - ucontrol->value.integer.value[1] = vol & 0xFF; - - return 0; -} - -static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); - int newvol, oldvol; - - oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value); - newvol = (ucontrol->value.integer.value[0] << 8) | - ucontrol->value.integer.value[1]; - - newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value, - newvol); - - return newvol != oldvol; -} - -static int sgio2audio_source_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - static const char *texts[3] = { - "Cam Mic", "Mic", "Line" - }; - uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; - uinfo->count = 1; - uinfo->value.enumerated.items = 3; - if (uinfo->value.enumerated.item >= 3) - uinfo->value.enumerated.item = 1; - strcpy(uinfo->value.enumerated.name, - texts[uinfo->value.enumerated.item]); - return 0; -} - -static int sgio2audio_source_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); - - ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843); - return 0; -} - -static int sgio2audio_source_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); - int newsrc, oldsrc; - - oldsrc = ad1843_get_recsrc(&chip->ad1843); - newsrc = ad1843_set_recsrc(&chip->ad1843, - ucontrol->value.enumerated.item[0]); - - return newsrc != oldsrc; -} - -/* dac1/pcm0 mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_pcm0 __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "PCM Playback Volume", - .index = 0, - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_PCM_0, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - -/* dac2/pcm1 mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_pcm1 __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "PCM Playback Volume", - .index = 1, - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_PCM_1, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - -/* record level mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_reclevel __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Capture Volume", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_RECLEV, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - -/* record level source control */ -static struct snd_kcontrol_new sgio2audio_ctrl_recsource __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Capture Source", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .info = sgio2audio_source_info, - .get = sgio2audio_source_get, - .put = sgio2audio_source_put, -}; - -/* line mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_line __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Line Playback Volume", - .index = 0, - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_LINE, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - -/* cd mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_cd __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Line Playback Volume", - .index = 1, - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_LINE_2, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - -/* mic mixer control */ -static struct snd_kcontrol_new sgio2audio_ctrl_mic __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Mic Playback Volume", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = AD1843_GAIN_MIC, - .info = sgio2audio_gain_info, - .get = sgio2audio_gain_get, - .put = sgio2audio_gain_put, -}; - - -static int __devinit snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip) -{ - int err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip)); - if (err < 0) - return err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip)); - if (err < 0) - return err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip)); - if (err < 0) - return err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_recsource, chip)); - if (err < 0) - return err; - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_line, chip)); - if (err < 0) - return err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_cd, chip)); - if (err < 0) - return err; - - err = snd_ctl_add(chip->card, - snd_ctl_new1(&sgio2audio_ctrl_mic, chip)); - if (err < 0) - return err; - - return 0; -} - -/* low-level audio interface DMA */ - -/* get data out of bounce buffer, count must be a multiple of 32 */ -/* returns 1 if a period has elapsed */ -static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip, - unsigned int ch, unsigned int count) -{ - int ret; - unsigned long src_base, src_pos, dst_mask; - unsigned char *dst_base; - int dst_pos; - u64 *src; - s16 *dst; - u64 x; - unsigned long flags; - struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; - - spin_lock_irqsave(&chip->channel[ch].lock, flags); - - src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT); - src_pos = readq(&mace->perif.audio.chan[ch].read_ptr); - dst_base = runtime->dma_area; - dst_pos = chip->channel[ch].pos; - dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; - - /* check if a period has elapsed */ - chip->channel[ch].size += (count >> 3); /* in frames */ - ret = chip->channel[ch].size >= runtime->period_size; - chip->channel[ch].size %= runtime->period_size; - - while (count) { - src = (u64 *)(src_base + src_pos); - dst = (s16 *)(dst_base + dst_pos); - - x = *src; - dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff; - dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff; - - src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK; - dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask; - count -= sizeof(u64); - } - - writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr); /* in bytes */ - chip->channel[ch].pos = dst_pos; - - spin_unlock_irqrestore(&chip->channel[ch].lock, flags); - return ret; -} - -/* put some DMA data in bounce buffer, count must be a multiple of 32 */ -/* returns 1 if a period has elapsed */ -static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip, - unsigned int ch, unsigned int count) -{ - int ret; - s64 l, r; - unsigned long dst_base, dst_pos, src_mask; - unsigned char *src_base; - int src_pos; - u64 *dst; - s16 *src; - unsigned long flags; - struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; - - spin_lock_irqsave(&chip->channel[ch].lock, flags); - - dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT); - dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr); - src_base = runtime->dma_area; - src_pos = chip->channel[ch].pos; - src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; - - /* check if a period has elapsed */ - chip->channel[ch].size += (count >> 3); /* in frames */ - ret = chip->channel[ch].size >= runtime->period_size; - chip->channel[ch].size %= runtime->period_size; - - while (count) { - src = (s16 *)(src_base + src_pos); - dst = (u64 *)(dst_base + dst_pos); - - l = src[0]; /* sign extend */ - r = src[1]; /* sign extend */ - - *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) | - ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT); - - dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK; - src_pos = (src_pos + 2 * sizeof(s16)) & src_mask; - count -= sizeof(u64); - } - - writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr); /* in bytes */ - chip->channel[ch].pos = src_pos; - - spin_unlock_irqrestore(&chip->channel[ch].lock, flags); - return ret; -} - -static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_sgio2audio_chan *chan = substream->runtime->private_data; - int ch = chan->idx; - - /* reset DMA channel */ - writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control); - udelay(10); - writeq(0, &mace->perif.audio.chan[ch].control); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - /* push a full buffer */ - snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32); - } - /* set DMA to wake on 50% empty and enable interrupt */ - writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50, - &mace->perif.audio.chan[ch].control); - return 0; -} - -static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio_chan *chan = substream->runtime->private_data; - - writeq(0, &mace->perif.audio.chan[chan->idx].control); - return 0; -} - -static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id) -{ - struct snd_sgio2audio_chan *chan = dev_id; - struct snd_pcm_substream *substream; - struct snd_sgio2audio *chip; - int count, ch; - - substream = chan->substream; - chip = snd_pcm_substream_chip(substream); - ch = chan->idx; - - /* empty the ring */ - count = CHANNEL_RING_SIZE - - readq(&mace->perif.audio.chan[ch].depth) - 32; - if (snd_sgio2audio_dma_pull_frag(chip, ch, count)) - snd_pcm_period_elapsed(substream); - - return IRQ_HANDLED; -} - -static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id) -{ - struct snd_sgio2audio_chan *chan = dev_id; - struct snd_pcm_substream *substream; - struct snd_sgio2audio *chip; - int count, ch; - - substream = chan->substream; - chip = snd_pcm_substream_chip(substream); - ch = chan->idx; - /* fill the ring */ - count = CHANNEL_RING_SIZE - - readq(&mace->perif.audio.chan[ch].depth) - 32; - if (snd_sgio2audio_dma_push_frag(chip, ch, count)) - snd_pcm_period_elapsed(substream); - - return IRQ_HANDLED; -} - -static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id) -{ - struct snd_sgio2audio_chan *chan = dev_id; - struct snd_pcm_substream *substream; - - substream = chan->substream; - snd_sgio2audio_dma_stop(substream); - snd_sgio2audio_dma_start(substream); - return IRQ_HANDLED; -} - -/* PCM part */ -/* PCM hardware definition */ -static struct snd_pcm_hardware snd_sgio2audio_pcm_hw = { - .info = (SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER), - .formats = SNDRV_PCM_FMTBIT_S16_BE, - .rates = SNDRV_PCM_RATE_8000_48000, - .rate_min = 8000, - .rate_max = 48000, - .channels_min = 2, - .channels_max = 2, - .buffer_bytes_max = 65536, - .period_bytes_min = 32768, - .period_bytes_max = 65536, - .periods_min = 1, - .periods_max = 1024, -}; - -/* PCM playback open callback */ -static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - - runtime->hw = snd_sgio2audio_pcm_hw; - runtime->private_data = &chip->channel[1]; - return 0; -} - -static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - - runtime->hw = snd_sgio2audio_pcm_hw; - runtime->private_data = &chip->channel[2]; - return 0; -} - -/* PCM capture open callback */ -static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - - runtime->hw = snd_sgio2audio_pcm_hw; - runtime->private_data = &chip->channel[0]; - return 0; -} - -/* PCM close callback */ -static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - - runtime->private_data = NULL; - return 0; -} - - -/* hw_params callback */ -static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - return snd_pcm_lib_alloc_vmalloc_buffer(substream, - params_buffer_bytes(hw_params)); -} - -/* hw_free callback */ -static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream) -{ - return snd_pcm_lib_free_vmalloc_buffer(substream); -} - -/* prepare callback */ -static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_sgio2audio_chan *chan = substream->runtime->private_data; - int ch = chan->idx; - unsigned long flags; - - spin_lock_irqsave(&chip->channel[ch].lock, flags); - - /* Setup the pseudo-dma transfer pointers. */ - chip->channel[ch].pos = 0; - chip->channel[ch].size = 0; - chip->channel[ch].substream = substream; - - /* set AD1843 format */ - /* hardware format is always S16_LE */ - switch (substream->stream) { - case SNDRV_PCM_STREAM_PLAYBACK: - ad1843_setup_dac(&chip->ad1843, - ch - 1, - runtime->rate, - SNDRV_PCM_FORMAT_S16_LE, - runtime->channels); - break; - case SNDRV_PCM_STREAM_CAPTURE: - ad1843_setup_adc(&chip->ad1843, - runtime->rate, - SNDRV_PCM_FORMAT_S16_LE, - runtime->channels); - break; - } - spin_unlock_irqrestore(&chip->channel[ch].lock, flags); - return 0; -} - -/* trigger callback */ -static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - /* start the PCM engine */ - snd_sgio2audio_dma_start(substream); - break; - case SNDRV_PCM_TRIGGER_STOP: - /* stop the PCM engine */ - snd_sgio2audio_dma_stop(substream); - break; - default: - return -EINVAL; - } - return 0; -} - -/* pointer callback */ -static snd_pcm_uframes_t -snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); - struct snd_sgio2audio_chan *chan = substream->runtime->private_data; - - /* get the current hardware pointer */ - return bytes_to_frames(substream->runtime, - chip->channel[chan->idx].pos); -} - -/* operators */ -static struct snd_pcm_ops snd_sgio2audio_playback1_ops = { - .open = snd_sgio2audio_playback1_open, - .close = snd_sgio2audio_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_sgio2audio_pcm_hw_params, - .hw_free = snd_sgio2audio_pcm_hw_free, - .prepare = snd_sgio2audio_pcm_prepare, - .trigger = snd_sgio2audio_pcm_trigger, - .pointer = snd_sgio2audio_pcm_pointer, - .page = snd_pcm_lib_get_vmalloc_page, - .mmap = snd_pcm_lib_mmap_vmalloc, -}; - -static struct snd_pcm_ops snd_sgio2audio_playback2_ops = { - .open = snd_sgio2audio_playback2_open, - .close = snd_sgio2audio_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_sgio2audio_pcm_hw_params, - .hw_free = snd_sgio2audio_pcm_hw_free, - .prepare = snd_sgio2audio_pcm_prepare, - .trigger = snd_sgio2audio_pcm_trigger, - .pointer = snd_sgio2audio_pcm_pointer, - .page = snd_pcm_lib_get_vmalloc_page, - .mmap = snd_pcm_lib_mmap_vmalloc, -}; - -static struct snd_pcm_ops snd_sgio2audio_capture_ops = { - .open = snd_sgio2audio_capture_open, - .close = snd_sgio2audio_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_sgio2audio_pcm_hw_params, - .hw_free = snd_sgio2audio_pcm_hw_free, - .prepare = snd_sgio2audio_pcm_prepare, - .trigger = snd_sgio2audio_pcm_trigger, - .pointer = snd_sgio2audio_pcm_pointer, - .page = snd_pcm_lib_get_vmalloc_page, - .mmap = snd_pcm_lib_mmap_vmalloc, -}; - -/* - * definitions of capture are omitted here... - */ - -/* create a pcm device */ -static int __devinit snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip) -{ - struct snd_pcm *pcm; - int err; - - /* create first pcm device with one outputs and one input */ - err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm); - if (err < 0) - return err; - - pcm->private_data = chip; - strcpy(pcm->name, "SGI O2 DAC1"); - - /* set operators */ - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, - &snd_sgio2audio_playback1_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, - &snd_sgio2audio_capture_ops); - - /* create second pcm device with one outputs and no input */ - err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm); - if (err < 0) - return err; - - pcm->private_data = chip; - strcpy(pcm->name, "SGI O2 DAC2"); - - /* set operators */ - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, - &snd_sgio2audio_playback2_ops); - - return 0; -} - -static struct { - int idx; - int irq; - irqreturn_t (*isr)(int, void *); - const char *desc; -} snd_sgio2_isr_table[] = { - { - .idx = 0, - .irq = MACEISA_AUDIO1_DMAT_IRQ, - .isr = snd_sgio2audio_dma_in_isr, - .desc = "Capture DMA Channel 0" - }, { - .idx = 0, - .irq = MACEISA_AUDIO1_OF_IRQ, - .isr = snd_sgio2audio_error_isr, - .desc = "Capture Overflow" - }, { - .idx = 1, - .irq = MACEISA_AUDIO2_DMAT_IRQ, - .isr = snd_sgio2audio_dma_out_isr, - .desc = "Playback DMA Channel 1" - }, { - .idx = 1, - .irq = MACEISA_AUDIO2_MERR_IRQ, - .isr = snd_sgio2audio_error_isr, - .desc = "Memory Error Channel 1" - }, { - .idx = 2, - .irq = MACEISA_AUDIO3_DMAT_IRQ, - .isr = snd_sgio2audio_dma_out_isr, - .desc = "Playback DMA Channel 2" - }, { - .idx = 2, - .irq = MACEISA_AUDIO3_MERR_IRQ, - .isr = snd_sgio2audio_error_isr, - .desc = "Memory Error Channel 2" - } -}; - -/* ALSA driver */ - -static int snd_sgio2audio_free(struct snd_sgio2audio *chip) -{ - int i; - - /* reset interface */ - writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); - udelay(1); - writeq(0, &mace->perif.audio.control); - - /* release IRQ's */ - for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) - free_irq(snd_sgio2_isr_table[i].irq, - &chip->channel[snd_sgio2_isr_table[i].idx]); - - dma_free_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, - chip->ring_base, chip->ring_base_dma); - - /* release card data */ - kfree(chip); - return 0; -} - -static int snd_sgio2audio_dev_free(struct snd_device *device) -{ - struct snd_sgio2audio *chip = device->device_data; - - return snd_sgio2audio_free(chip); -} - -static struct snd_device_ops ops = { - .dev_free = snd_sgio2audio_dev_free, -}; - -static int __devinit snd_sgio2audio_create(struct snd_card *card, - struct snd_sgio2audio **rchip) -{ - struct snd_sgio2audio *chip; - int i, err; - - *rchip = NULL; - - /* check if a codec is attached to the interface */ - /* (Audio or Audio/Video board present) */ - if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT)) - return -ENOENT; - - chip = kzalloc(sizeof(struct snd_sgio2audio), GFP_KERNEL); - if (chip == NULL) - return -ENOMEM; - - chip->card = card; - - chip->ring_base = dma_alloc_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, - &chip->ring_base_dma, GFP_USER); - if (chip->ring_base == NULL) { - printk(KERN_ERR - "sgio2audio: could not allocate ring buffers\n"); - kfree(chip); - return -ENOMEM; - } - - spin_lock_init(&chip->ad1843_lock); - - /* initialize channels */ - for (i = 0; i < 3; i++) { - spin_lock_init(&chip->channel[i].lock); - chip->channel[i].idx = i; - } - - /* allocate IRQs */ - for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) { - if (request_irq(snd_sgio2_isr_table[i].irq, - snd_sgio2_isr_table[i].isr, - 0, - snd_sgio2_isr_table[i].desc, - &chip->channel[snd_sgio2_isr_table[i].idx])) { - snd_sgio2audio_free(chip); - printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n", - snd_sgio2_isr_table[i].irq); - return -EBUSY; - } - } - - /* reset the interface */ - writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); - udelay(1); - writeq(0, &mace->perif.audio.control); - msleep_interruptible(1); /* give time to recover */ - - /* set ring base */ - writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase); - - /* attach the AD1843 codec */ - chip->ad1843.read = read_ad1843_reg; - chip->ad1843.write = write_ad1843_reg; - chip->ad1843.chip = chip; - - /* initialize the AD1843 codec */ - err = ad1843_init(&chip->ad1843); - if (err < 0) { - snd_sgio2audio_free(chip); - return err; - } - - err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); - if (err < 0) { - snd_sgio2audio_free(chip); - return err; - } - *rchip = chip; - return 0; -} - -static int __devinit snd_sgio2audio_probe(struct platform_device *pdev) -{ - struct snd_card *card; - struct snd_sgio2audio *chip; - int err; - - err = snd_card_create(index, id, THIS_MODULE, 0, &card); - if (err < 0) - return err; - - err = snd_sgio2audio_create(card, &chip); - if (err < 0) { - snd_card_free(card); - return err; - } - snd_card_set_dev(card, &pdev->dev); - - err = snd_sgio2audio_new_pcm(chip); - if (err < 0) { - snd_card_free(card); - return err; - } - err = snd_sgio2audio_new_mixer(chip); - if (err < 0) { - snd_card_free(card); - return err; - } - - strcpy(card->driver, "SGI O2 Audio"); - strcpy(card->shortname, "SGI O2 Audio"); - sprintf(card->longname, "%s irq %i-%i", - card->shortname, - MACEISA_AUDIO1_DMAT_IRQ, - MACEISA_AUDIO3_MERR_IRQ); - - err = snd_card_register(card); - if (err < 0) { - snd_card_free(card); - return err; - } - platform_set_drvdata(pdev, card); - return 0; -} - -static int __devexit snd_sgio2audio_remove(struct platform_device *pdev) -{ - struct snd_card *card = platform_get_drvdata(pdev); - - snd_card_free(card); - platform_set_drvdata(pdev, NULL); - return 0; -} - -static struct platform_driver sgio2audio_driver = { - .probe = snd_sgio2audio_probe, - .remove = __devexit_p(snd_sgio2audio_remove), - .driver = { - .name = "sgio2audio", - .owner = THIS_MODULE, - } -}; - -module_platform_driver(sgio2audio_driver); 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