diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pcm.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pcm.c | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pcm.c b/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pcm.c deleted file mode 100644 index dbf94b18..00000000 --- a/ANDROID_3.4.5/sound/pci/cs5535audio/cs5535audio_pcm.c +++ /dev/null @@ -1,454 +0,0 @@ -/* - * 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 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 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 = cpu_to_le32(lastdesc->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: - snd_printk(KERN_ERR "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) { - snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n", - curdma, dma->buf_addr); - return 0; - } - curdma -= dma->buf_addr; - if (curdma >= dma->buf_bytes) { - snd_printk(KERN_ERR "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 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 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 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 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 __devinit 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; -} - |