diff options
Diffstat (limited to 'drivers/staging/media/solo6x10/g723.c')
| -rw-r--r-- | drivers/staging/media/solo6x10/g723.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/drivers/staging/media/solo6x10/g723.c b/drivers/staging/media/solo6x10/g723.c deleted file mode 100644 index 2cd0de28a633..000000000000 --- a/drivers/staging/media/solo6x10/g723.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com - * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net> - * - * 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/mempool.h> -#include <linux/poll.h> -#include <linux/kthread.h> -#include <linux/slab.h> -#include <linux/freezer.h> -#include <linux/export.h> -#include <sound/core.h> -#include <sound/initval.h> -#include <sound/pcm.h> -#include <sound/control.h> -#include "solo6x10.h" -#include "tw28.h" - -#define G723_INTR_ORDER 0 -#define G723_FDMA_PAGES 32 -#define G723_PERIOD_BYTES 48 -#define G723_PERIOD_BLOCK 1024 -#define G723_FRAMES_PER_PAGE 48 - -/* Sets up channels 16-19 for decoding and 0-15 for encoding */ -#define OUTMODE_MASK 0x300 - -#define SAMPLERATE 8000 -#define BITRATE 25 - -/* The solo writes to 1k byte pages, 32 pages, in the dma. Each 1k page - * is broken down to 20 * 48 byte regions (one for each channel possible) - * with the rest of the page being dummy data. */ -#define MAX_BUFFER (G723_PERIOD_BYTES * PERIODS_MAX) -#define IRQ_PAGES 4 /* 0 - 4 */ -#define PERIODS_MIN (1 << IRQ_PAGES) -#define PERIODS_MAX G723_FDMA_PAGES - -struct solo_snd_pcm { - int on; - spinlock_t lock; - struct solo_dev *solo_dev; - unsigned char g723_buf[G723_PERIOD_BYTES]; -}; - -static void solo_g723_config(struct solo_dev *solo_dev) -{ - int clk_div; - - clk_div = SOLO_CLOCK_MHZ / (SAMPLERATE * (BITRATE * 2) * 2); - - solo_reg_write(solo_dev, SOLO_AUDIO_SAMPLE, - SOLO_AUDIO_BITRATE(BITRATE) | - SOLO_AUDIO_CLK_DIV(clk_div)); - - solo_reg_write(solo_dev, SOLO_AUDIO_FDMA_INTR, - SOLO_AUDIO_FDMA_INTERVAL(IRQ_PAGES) | - SOLO_AUDIO_INTR_ORDER(G723_INTR_ORDER) | - SOLO_AUDIO_FDMA_BASE(SOLO_G723_EXT_ADDR(solo_dev) >> 16)); - - solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, - SOLO_AUDIO_ENABLE | SOLO_AUDIO_I2S_MODE | - SOLO_AUDIO_I2S_MULTI(3) | SOLO_AUDIO_MODE(OUTMODE_MASK)); -} - -void solo_g723_isr(struct solo_dev *solo_dev) -{ - struct snd_pcm_str *pstr = - &solo_dev->snd_pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; - struct snd_pcm_substream *ss; - struct solo_snd_pcm *solo_pcm; - - solo_reg_write(solo_dev, SOLO_IRQ_STAT, SOLO_IRQ_G723); - - for (ss = pstr->substream; ss != NULL; ss = ss->next) { - if (snd_pcm_substream_chip(ss) == NULL) - continue; - - /* This means open() hasn't been called on this one */ - if (snd_pcm_substream_chip(ss) == solo_dev) - continue; - - /* Haven't triggered a start yet */ - solo_pcm = snd_pcm_substream_chip(ss); - if (!solo_pcm->on) - continue; - - snd_pcm_period_elapsed(ss); - } -} - -static int snd_solo_hw_params(struct snd_pcm_substream *ss, - struct snd_pcm_hw_params *hw_params) -{ - return snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params)); -} - -static int snd_solo_hw_free(struct snd_pcm_substream *ss) -{ - return snd_pcm_lib_free_pages(ss); -} - -static struct snd_pcm_hardware snd_solo_pcm_hw = { - .info = (SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER | - SNDRV_PCM_INFO_MMAP_VALID), - .formats = SNDRV_PCM_FMTBIT_U8, - .rates = SNDRV_PCM_RATE_8000, - .rate_min = 8000, - .rate_max = 8000, - .channels_min = 1, - .channels_max = 1, - .buffer_bytes_max = MAX_BUFFER, - .period_bytes_min = G723_PERIOD_BYTES, - .period_bytes_max = G723_PERIOD_BYTES, - .periods_min = PERIODS_MIN, - .periods_max = PERIODS_MAX, -}; - -static int snd_solo_pcm_open(struct snd_pcm_substream *ss) -{ - struct solo_dev *solo_dev = snd_pcm_substream_chip(ss); - struct solo_snd_pcm *solo_pcm; - - solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL); - if (solo_pcm == NULL) - return -ENOMEM; - - spin_lock_init(&solo_pcm->lock); - solo_pcm->solo_dev = solo_dev; - ss->runtime->hw = snd_solo_pcm_hw; - - snd_pcm_substream_chip(ss) = solo_pcm; - - return 0; -} - -static int snd_solo_pcm_close(struct snd_pcm_substream *ss) -{ - struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss); - - snd_pcm_substream_chip(ss) = solo_pcm->solo_dev; - kfree(solo_pcm); - - return 0; -} - -static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd) -{ - struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss); - struct solo_dev *solo_dev = solo_pcm->solo_dev; - int ret = 0; - - spin_lock(&solo_pcm->lock); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - if (solo_pcm->on == 0) { - /* If this is the first user, switch on interrupts */ - if (atomic_inc_return(&solo_dev->snd_users) == 1) - solo_irq_on(solo_dev, SOLO_IRQ_G723); - solo_pcm->on = 1; - } - break; - case SNDRV_PCM_TRIGGER_STOP: - if (solo_pcm->on) { - /* If this was our last user, switch them off */ - if (atomic_dec_return(&solo_dev->snd_users) == 0) - solo_irq_off(solo_dev, SOLO_IRQ_G723); - solo_pcm->on = 0; - } - break; - default: - ret = -EINVAL; - } - - spin_unlock(&solo_pcm->lock); - - return ret; -} - -static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss) -{ - return 0; -} - -static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss) -{ - struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss); - struct solo_dev *solo_dev = solo_pcm->solo_dev; - snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f; - - return idx * G723_FRAMES_PER_PAGE; -} - -static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel, - snd_pcm_uframes_t pos, void __user *dst, - snd_pcm_uframes_t count) -{ - struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss); - struct solo_dev *solo_dev = solo_pcm->solo_dev; - int err, i; - - for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) { - int page = (pos / G723_FRAMES_PER_PAGE) + i; - - err = solo_p2m_dma(solo_dev, SOLO_P2M_DMA_ID_G723E, 0, - solo_pcm->g723_buf, - SOLO_G723_EXT_ADDR(solo_dev) + - (page * G723_PERIOD_BLOCK) + - (ss->number * G723_PERIOD_BYTES), - G723_PERIOD_BYTES); - if (err) - return err; - - err = copy_to_user(dst + (i * G723_PERIOD_BYTES), - solo_pcm->g723_buf, G723_PERIOD_BYTES); - - if (err) - return -EFAULT; - } - - return 0; -} - -static struct snd_pcm_ops snd_solo_pcm_ops = { - .open = snd_solo_pcm_open, - .close = snd_solo_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_solo_hw_params, - .hw_free = snd_solo_hw_free, - .prepare = snd_solo_pcm_prepare, - .trigger = snd_solo_pcm_trigger, - .pointer = snd_solo_pcm_pointer, - .copy = snd_solo_pcm_copy, -}; - -static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *info) -{ - info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - info->count = 1; - info->value.integer.min = 0; - info->value.integer.max = 15; - info->value.integer.step = 1; - - return 0; -} - -static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *value) -{ - struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol); - u8 ch = value->id.numid - 1; - - value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch); - - return 0; -} - -static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *value) -{ - struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol); - u8 ch = value->id.numid - 1; - u8 old_val; - - old_val = tw28_get_audio_gain(solo_dev, ch); - if (old_val == value->value.integer.value[0]) - return 0; - - tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]); - - return 1; -} - -static struct snd_kcontrol_new snd_solo_capture_volume = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Capture Volume", - .info = snd_solo_capture_volume_info, - .get = snd_solo_capture_volume_get, - .put = snd_solo_capture_volume_put, -}; - -static int solo_snd_pcm_init(struct solo_dev *solo_dev) -{ - struct snd_card *card = solo_dev->snd_card; - struct snd_pcm *pcm; - struct snd_pcm_substream *ss; - int ret; - int i; - - ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans, - &pcm); - if (ret < 0) - return ret; - - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, - &snd_solo_pcm_ops); - - snd_pcm_chip(pcm) = solo_dev; - pcm->info_flags = 0; - strcpy(pcm->name, card->shortname); - - for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; - ss; ss = ss->next, i++) - sprintf(ss->name, "Camera #%d Audio", i); - - ret = snd_pcm_lib_preallocate_pages_for_all(pcm, - SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), - MAX_BUFFER, MAX_BUFFER); - if (ret < 0) - return ret; - - solo_dev->snd_pcm = pcm; - - return 0; -} - -int solo_g723_init(struct solo_dev *solo_dev) -{ - static struct snd_device_ops ops = { NULL }; - struct snd_card *card; - struct snd_kcontrol_new kctl; - char name[32]; - int ret; - - atomic_set(&solo_dev->snd_users, 0); - - /* Allows for easier mapping between video and audio */ - sprintf(name, "Softlogic%d", solo_dev->vfd->num); - - ret = snd_card_create(SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0, - &solo_dev->snd_card); - if (ret < 0) - return ret; - - card = solo_dev->snd_card; - - strcpy(card->driver, SOLO6X10_NAME); - strcpy(card->shortname, "SOLO-6x10 Audio"); - sprintf(card->longname, "%s on %s IRQ %d", card->shortname, - pci_name(solo_dev->pdev), solo_dev->pdev->irq); - snd_card_set_dev(card, &solo_dev->pdev->dev); - - ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops); - if (ret < 0) - goto snd_error; - - /* Mixer controls */ - strcpy(card->mixername, "SOLO-6x10"); - kctl = snd_solo_capture_volume; - kctl.count = solo_dev->nr_chans; - ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev)); - if (ret < 0) - return ret; - - ret = solo_snd_pcm_init(solo_dev); - if (ret < 0) - goto snd_error; - - ret = snd_card_register(card); - if (ret < 0) - goto snd_error; - - solo_g723_config(solo_dev); - - dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name); - - return 0; - -snd_error: - snd_card_free(card); - return ret; -} - -void solo_g723_exit(struct solo_dev *solo_dev) -{ - solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0); - solo_irq_off(solo_dev, SOLO_IRQ_G723); - - snd_card_free(solo_dev->snd_card); -} |