diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/pci/lola/lola_pcm.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/pci/lola/lola_pcm.c | 706 |
1 files changed, 0 insertions, 706 deletions
diff --git a/ANDROID_3.4.5/sound/pci/lola/lola_pcm.c b/ANDROID_3.4.5/sound/pci/lola/lola_pcm.c deleted file mode 100644 index c44db68e..00000000 --- a/ANDROID_3.4.5/sound/pci/lola/lola_pcm.c +++ /dev/null @@ -1,706 +0,0 @@ -/* - * Support for Digigram Lola PCI-e boards - * - * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> - * - * 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/kernel.h> -#include <linux/init.h> -#include <linux/dma-mapping.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include "lola.h" - -#define LOLA_MAX_BDL_ENTRIES 8 -#define LOLA_MAX_BUF_SIZE (1024*1024*1024) -#define LOLA_BDL_ENTRY_SIZE (16 * 16) - -static struct lola_pcm *lola_get_pcm(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - return &chip->pcm[substream->stream]; -} - -static struct lola_stream *lola_get_stream(struct snd_pcm_substream *substream) -{ - struct lola_pcm *pcm = lola_get_pcm(substream); - unsigned int idx = substream->number; - return &pcm->streams[idx]; -} - -static unsigned int lola_get_lrc(struct lola *chip) -{ - return lola_readl(chip, BAR1, LRC); -} - -static unsigned int lola_get_tstamp(struct lola *chip, bool quick_no_sync) -{ - unsigned int tstamp = lola_get_lrc(chip) >> 8; - if (chip->granularity) { - unsigned int wait_banks = quick_no_sync ? 0 : 8; - tstamp += (wait_banks + 1) * chip->granularity - 1; - tstamp -= tstamp % chip->granularity; - } - return tstamp << 8; -} - -/* clear any pending interrupt status */ -static void lola_stream_clear_pending_irq(struct lola *chip, - struct lola_stream *str) -{ - unsigned int val = lola_dsd_read(chip, str->dsd, STS); - val &= LOLA_DSD_STS_DESE | LOLA_DSD_STS_BCIS; - if (val) - lola_dsd_write(chip, str->dsd, STS, val); -} - -static void lola_stream_start(struct lola *chip, struct lola_stream *str, - unsigned int tstamp) -{ - lola_stream_clear_pending_irq(chip, str); - lola_dsd_write(chip, str->dsd, CTL, - LOLA_DSD_CTL_SRUN | - LOLA_DSD_CTL_IOCE | - LOLA_DSD_CTL_DEIE | - LOLA_DSD_CTL_VLRCV | - tstamp); -} - -static void lola_stream_stop(struct lola *chip, struct lola_stream *str, - unsigned int tstamp) -{ - lola_dsd_write(chip, str->dsd, CTL, - LOLA_DSD_CTL_IOCE | - LOLA_DSD_CTL_DEIE | - LOLA_DSD_CTL_VLRCV | - tstamp); - lola_stream_clear_pending_irq(chip, str); -} - -static void wait_for_srst_clear(struct lola *chip, struct lola_stream *str) -{ - unsigned long end_time = jiffies + msecs_to_jiffies(200); - while (time_before(jiffies, end_time)) { - unsigned int val; - val = lola_dsd_read(chip, str->dsd, CTL); - if (!(val & LOLA_DSD_CTL_SRST)) - return; - msleep(1); - } - printk(KERN_WARNING SFX "SRST not clear (stream %d)\n", str->dsd); -} - -static int lola_stream_wait_for_fifo(struct lola *chip, - struct lola_stream *str, - bool ready) -{ - unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; - unsigned long end_time = jiffies + msecs_to_jiffies(200); - while (time_before(jiffies, end_time)) { - unsigned int reg = lola_dsd_read(chip, str->dsd, STS); - if ((reg & LOLA_DSD_STS_FIFORDY) == val) - return 0; - msleep(1); - } - printk(KERN_WARNING SFX "FIFO not ready (stream %d)\n", str->dsd); - return -EIO; -} - -/* sync for FIFO ready/empty for all linked streams; - * clear paused flag when FIFO gets ready again - */ -static int lola_sync_wait_for_fifo(struct lola *chip, - struct snd_pcm_substream *substream, - bool ready) -{ - unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; - unsigned long end_time = jiffies + msecs_to_jiffies(200); - struct snd_pcm_substream *s; - int pending = 0; - - while (time_before(jiffies, end_time)) { - pending = 0; - snd_pcm_group_for_each_entry(s, substream) { - struct lola_stream *str; - if (s->pcm->card != substream->pcm->card) - continue; - str = lola_get_stream(s); - if (str->prepared && str->paused) { - unsigned int reg; - reg = lola_dsd_read(chip, str->dsd, STS); - if ((reg & LOLA_DSD_STS_FIFORDY) != val) { - pending = str->dsd + 1; - break; - } - if (ready) - str->paused = 0; - } - } - if (!pending) - return 0; - msleep(1); - } - printk(KERN_WARNING SFX "FIFO not ready (pending %d)\n", pending - 1); - return -EIO; -} - -/* finish pause - prepare for a new resume */ -static void lola_sync_pause(struct lola *chip, - struct snd_pcm_substream *substream) -{ - struct snd_pcm_substream *s; - - lola_sync_wait_for_fifo(chip, substream, false); - snd_pcm_group_for_each_entry(s, substream) { - struct lola_stream *str; - if (s->pcm->card != substream->pcm->card) - continue; - str = lola_get_stream(s); - if (str->paused && str->prepared) - lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRUN | - LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); - } - lola_sync_wait_for_fifo(chip, substream, true); -} - -static void lola_stream_reset(struct lola *chip, struct lola_stream *str) -{ - if (str->prepared) { - if (str->paused) - lola_sync_pause(chip, str->substream); - str->prepared = 0; - lola_dsd_write(chip, str->dsd, CTL, - LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); - lola_stream_wait_for_fifo(chip, str, false); - lola_stream_clear_pending_irq(chip, str); - lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRST); - lola_dsd_write(chip, str->dsd, LVI, 0); - lola_dsd_write(chip, str->dsd, BDPU, 0); - lola_dsd_write(chip, str->dsd, BDPL, 0); - wait_for_srst_clear(chip, str); - } -} - -static struct snd_pcm_hardware lola_pcm_hw = { - .info = (SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_PAUSE), - .formats = (SNDRV_PCM_FMTBIT_S16_LE | - SNDRV_PCM_FMTBIT_S24_LE | - SNDRV_PCM_FMTBIT_S32_LE | - SNDRV_PCM_FMTBIT_FLOAT_LE), - .rates = SNDRV_PCM_RATE_8000_192000, - .rate_min = 8000, - .rate_max = 192000, - .channels_min = 1, - .channels_max = 2, - .buffer_bytes_max = LOLA_MAX_BUF_SIZE, - .period_bytes_min = 128, - .period_bytes_max = LOLA_MAX_BUF_SIZE / 2, - .periods_min = 2, - .periods_max = LOLA_MAX_BDL_ENTRIES, - .fifo_size = 0, -}; - -static int lola_pcm_open(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_pcm *pcm = lola_get_pcm(substream); - struct lola_stream *str = lola_get_stream(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - - mutex_lock(&chip->open_mutex); - if (str->opened) { - mutex_unlock(&chip->open_mutex); - return -EBUSY; - } - str->substream = substream; - str->master = NULL; - str->opened = 1; - runtime->hw = lola_pcm_hw; - runtime->hw.channels_max = pcm->num_streams - str->index; - if (chip->sample_rate) { - /* sample rate is locked */ - runtime->hw.rate_min = chip->sample_rate; - runtime->hw.rate_max = chip->sample_rate; - } else { - runtime->hw.rate_min = chip->sample_rate_min; - runtime->hw.rate_max = chip->sample_rate_max; - } - chip->ref_count_rate++; - snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); - /* period size = multiple of chip->granularity (8, 16 or 32 frames)*/ - snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, - chip->granularity); - snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, - chip->granularity); - mutex_unlock(&chip->open_mutex); - return 0; -} - -static void lola_cleanup_slave_streams(struct lola_pcm *pcm, - struct lola_stream *str) -{ - int i; - for (i = str->index + 1; i < pcm->num_streams; i++) { - struct lola_stream *s = &pcm->streams[i]; - if (s->master != str) - break; - s->master = NULL; - s->opened = 0; - } -} - -static int lola_pcm_close(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_stream *str = lola_get_stream(substream); - - mutex_lock(&chip->open_mutex); - if (str->substream == substream) { - str->substream = NULL; - str->opened = 0; - } - if (--chip->ref_count_rate == 0) { - /* release sample rate */ - chip->sample_rate = 0; - } - mutex_unlock(&chip->open_mutex); - return 0; -} - -static int lola_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct lola_stream *str = lola_get_stream(substream); - - str->bufsize = 0; - str->period_bytes = 0; - str->format_verb = 0; - return snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); -} - -static int lola_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_pcm *pcm = lola_get_pcm(substream); - struct lola_stream *str = lola_get_stream(substream); - - mutex_lock(&chip->open_mutex); - lola_stream_reset(chip, str); - lola_cleanup_slave_streams(pcm, str); - mutex_unlock(&chip->open_mutex); - return snd_pcm_lib_free_pages(substream); -} - -/* - * set up a BDL entry - */ -static int setup_bdle(struct snd_pcm_substream *substream, - struct lola_stream *str, u32 **bdlp, - int ofs, int size) -{ - u32 *bdl = *bdlp; - - while (size > 0) { - dma_addr_t addr; - int chunk; - - if (str->frags >= LOLA_MAX_BDL_ENTRIES) - return -EINVAL; - - addr = snd_pcm_sgbuf_get_addr(substream, ofs); - /* program the address field of the BDL entry */ - bdl[0] = cpu_to_le32((u32)addr); - bdl[1] = cpu_to_le32(upper_32_bits(addr)); - /* program the size field of the BDL entry */ - chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size); - bdl[2] = cpu_to_le32(chunk); - /* program the IOC to enable interrupt - * only when the whole fragment is processed - */ - size -= chunk; - bdl[3] = size ? 0 : cpu_to_le32(0x01); - bdl += 4; - str->frags++; - ofs += chunk; - } - *bdlp = bdl; - return ofs; -} - -/* - * set up BDL entries - */ -static int lola_setup_periods(struct lola *chip, struct lola_pcm *pcm, - struct snd_pcm_substream *substream, - struct lola_stream *str) -{ - u32 *bdl; - int i, ofs, periods, period_bytes; - - period_bytes = str->period_bytes; - periods = str->bufsize / period_bytes; - - /* program the initial BDL entries */ - bdl = (u32 *)(pcm->bdl.area + LOLA_BDL_ENTRY_SIZE * str->index); - ofs = 0; - str->frags = 0; - for (i = 0; i < periods; i++) { - ofs = setup_bdle(substream, str, &bdl, ofs, period_bytes); - if (ofs < 0) - goto error; - } - return 0; - - error: - snd_printk(KERN_ERR SFX "Too many BDL entries: buffer=%d, period=%d\n", - str->bufsize, period_bytes); - return -EINVAL; -} - -static unsigned int lola_get_format_verb(struct snd_pcm_substream *substream) -{ - unsigned int verb; - - switch (substream->runtime->format) { - case SNDRV_PCM_FORMAT_S16_LE: - verb = 0x00000000; - break; - case SNDRV_PCM_FORMAT_S24_LE: - verb = 0x00000200; - break; - case SNDRV_PCM_FORMAT_S32_LE: - verb = 0x00000300; - break; - case SNDRV_PCM_FORMAT_FLOAT_LE: - verb = 0x00001300; - break; - default: - return 0; - } - verb |= substream->runtime->channels; - return verb; -} - -static int lola_set_stream_config(struct lola *chip, - struct lola_stream *str, - int channels) -{ - int i, err; - unsigned int verb, val; - - /* set format info for all channels - * (with only one command for the first channel) - */ - err = lola_codec_read(chip, str->nid, LOLA_VERB_SET_STREAM_FORMAT, - str->format_verb, 0, &val, NULL); - if (err < 0) { - printk(KERN_ERR SFX "Cannot set stream format 0x%x\n", - str->format_verb); - return err; - } - - /* update stream - channel config */ - for (i = 0; i < channels; i++) { - verb = (str->index << 6) | i; - err = lola_codec_read(chip, str[i].nid, - LOLA_VERB_SET_CHANNEL_STREAMID, 0, verb, - &val, NULL); - if (err < 0) { - printk(KERN_ERR SFX "Cannot set stream channel %d\n", i); - return err; - } - } - return 0; -} - -/* - * set up the SD for streaming - */ -static int lola_setup_controller(struct lola *chip, struct lola_pcm *pcm, - struct lola_stream *str) -{ - dma_addr_t bdl; - - if (str->prepared) - return -EINVAL; - - /* set up BDL */ - bdl = pcm->bdl.addr + LOLA_BDL_ENTRY_SIZE * str->index; - lola_dsd_write(chip, str->dsd, BDPL, (u32)bdl); - lola_dsd_write(chip, str->dsd, BDPU, upper_32_bits(bdl)); - /* program the stream LVI (last valid index) of the BDL */ - lola_dsd_write(chip, str->dsd, LVI, str->frags - 1); - lola_stream_clear_pending_irq(chip, str); - - lola_dsd_write(chip, str->dsd, CTL, - LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE | LOLA_DSD_CTL_SRUN); - - str->prepared = 1; - - return lola_stream_wait_for_fifo(chip, str, true); -} - -static int lola_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_pcm *pcm = lola_get_pcm(substream); - struct lola_stream *str = lola_get_stream(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - unsigned int bufsize, period_bytes, format_verb; - int i, err; - - mutex_lock(&chip->open_mutex); - lola_stream_reset(chip, str); - lola_cleanup_slave_streams(pcm, str); - if (str->index + runtime->channels > pcm->num_streams) { - mutex_unlock(&chip->open_mutex); - return -EINVAL; - } - for (i = 1; i < runtime->channels; i++) { - str[i].master = str; - str[i].opened = 1; - } - mutex_unlock(&chip->open_mutex); - - bufsize = snd_pcm_lib_buffer_bytes(substream); - period_bytes = snd_pcm_lib_period_bytes(substream); - format_verb = lola_get_format_verb(substream); - - str->bufsize = bufsize; - str->period_bytes = period_bytes; - str->format_verb = format_verb; - - err = lola_setup_periods(chip, pcm, substream, str); - if (err < 0) - return err; - - err = lola_set_sample_rate(chip, runtime->rate); - if (err < 0) - return err; - chip->sample_rate = runtime->rate; /* sample rate gets locked */ - - err = lola_set_stream_config(chip, str, runtime->channels); - if (err < 0) - return err; - - err = lola_setup_controller(chip, pcm, str); - if (err < 0) { - lola_stream_reset(chip, str); - return err; - } - - return 0; -} - -static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_stream *str; - struct snd_pcm_substream *s; - unsigned int start; - unsigned int tstamp; - bool sync_streams; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - case SNDRV_PCM_TRIGGER_RESUME: - start = 1; - break; - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - case SNDRV_PCM_TRIGGER_SUSPEND: - case SNDRV_PCM_TRIGGER_STOP: - start = 0; - break; - default: - return -EINVAL; - } - - /* - * sample correct synchronization is only needed starting several - * streams. On stop or if only one stream do as quick as possible - */ - sync_streams = (start && snd_pcm_stream_linked(substream)); - tstamp = lola_get_tstamp(chip, !sync_streams); - spin_lock(&chip->reg_lock); - snd_pcm_group_for_each_entry(s, substream) { - if (s->pcm->card != substream->pcm->card) - continue; - str = lola_get_stream(s); - if (start) - lola_stream_start(chip, str, tstamp); - else - lola_stream_stop(chip, str, tstamp); - str->running = start; - str->paused = !start; - snd_pcm_trigger_done(s, substream); - } - spin_unlock(&chip->reg_lock); - return 0; -} - -static snd_pcm_uframes_t lola_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct lola *chip = snd_pcm_substream_chip(substream); - struct lola_stream *str = lola_get_stream(substream); - unsigned int pos = lola_dsd_read(chip, str->dsd, LPIB); - - if (pos >= str->bufsize) - pos = 0; - return bytes_to_frames(substream->runtime, pos); -} - -void lola_pcm_update(struct lola *chip, struct lola_pcm *pcm, unsigned int bits) -{ - int i; - - for (i = 0; bits && i < pcm->num_streams; i++) { - if (bits & (1 << i)) { - struct lola_stream *str = &pcm->streams[i]; - if (str->substream && str->running) - snd_pcm_period_elapsed(str->substream); - bits &= ~(1 << i); - } - } -} - -static struct snd_pcm_ops lola_pcm_ops = { - .open = lola_pcm_open, - .close = lola_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = lola_pcm_hw_params, - .hw_free = lola_pcm_hw_free, - .prepare = lola_pcm_prepare, - .trigger = lola_pcm_trigger, - .pointer = lola_pcm_pointer, - .page = snd_pcm_sgbuf_ops_page, -}; - -int __devinit lola_create_pcm(struct lola *chip) -{ - struct snd_pcm *pcm; - int i, err; - - for (i = 0; i < 2; i++) { - err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, - snd_dma_pci_data(chip->pci), - PAGE_SIZE, &chip->pcm[i].bdl); - if (err < 0) - return err; - } - - err = snd_pcm_new(chip->card, "Digigram Lola", 0, - chip->pcm[SNDRV_PCM_STREAM_PLAYBACK].num_streams, - chip->pcm[SNDRV_PCM_STREAM_CAPTURE].num_streams, - &pcm); - if (err < 0) - return err; - strlcpy(pcm->name, "Digigram Lola", sizeof(pcm->name)); - pcm->private_data = chip; - for (i = 0; i < 2; i++) { - if (chip->pcm[i].num_streams) - snd_pcm_set_ops(pcm, i, &lola_pcm_ops); - } - /* buffer pre-allocation */ - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, - snd_dma_pci_data(chip->pci), - 1024 * 64, 32 * 1024 * 1024); - return 0; -} - -void lola_free_pcm(struct lola *chip) -{ - snd_dma_free_pages(&chip->pcm[0].bdl); - snd_dma_free_pages(&chip->pcm[1].bdl); -} - -/* - */ - -static int lola_init_stream(struct lola *chip, struct lola_stream *str, - int idx, int nid, int dir) -{ - unsigned int val; - int err; - - str->nid = nid; - str->index = idx; - str->dsd = idx; - if (dir == PLAY) - str->dsd += MAX_STREAM_IN_COUNT; - err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val); - if (err < 0) { - printk(KERN_ERR SFX "Can't read wcaps for 0x%x\n", nid); - return err; - } - if (dir == PLAY) { - /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) */ - if ((val & 0x00f00dff) != 0x00000010) { - printk(KERN_ERR SFX "Invalid wcaps 0x%x for 0x%x\n", - val, nid); - return -EINVAL; - } - } else { - /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) - * (bug : ignore bit8: Conn list = 0/1) - */ - if ((val & 0x00f00cff) != 0x00100010) { - printk(KERN_ERR SFX "Invalid wcaps 0x%x for 0x%x\n", - val, nid); - return -EINVAL; - } - /* test bit9:DIGITAL and bit12:SRC_PRESENT*/ - if ((val & 0x00001200) == 0x00001200) - chip->input_src_caps_mask |= (1 << idx); - } - - err = lola_read_param(chip, nid, LOLA_PAR_STREAM_FORMATS, &val); - if (err < 0) { - printk(KERN_ERR SFX "Can't read FORMATS 0x%x\n", nid); - return err; - } - val &= 3; - if (val == 3) - str->can_float = true; - if (!(val & 1)) { - printk(KERN_ERR SFX "Invalid formats 0x%x for 0x%x", val, nid); - return -EINVAL; - } - return 0; -} - -int __devinit lola_init_pcm(struct lola *chip, int dir, int *nidp) -{ - struct lola_pcm *pcm = &chip->pcm[dir]; - int i, nid, err; - - nid = *nidp; - for (i = 0; i < pcm->num_streams; i++, nid++) { - err = lola_init_stream(chip, &pcm->streams[i], i, nid, dir); - if (err < 0) - return err; - } - *nidp = nid; - return 0; -} |