diff options
Diffstat (limited to 'target/linux/ubicom32/files/sound/ubicom32/ubi32-pcm.c')
| -rw-r--r-- | target/linux/ubicom32/files/sound/ubicom32/ubi32-pcm.c | 711 |
1 files changed, 0 insertions, 711 deletions
diff --git a/target/linux/ubicom32/files/sound/ubicom32/ubi32-pcm.c b/target/linux/ubicom32/files/sound/ubicom32/ubi32-pcm.c deleted file mode 100644 index 2bc300b85..000000000 --- a/target/linux/ubicom32/files/sound/ubicom32/ubi32-pcm.c +++ /dev/null @@ -1,711 +0,0 @@ -/* - * sound/ubicom32/ubi32-pcm.c - * Interface to ubicom32 virtual audio peripheral - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port 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. - * - * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ - -#include <linux/interrupt.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <asm/ip5000.h> -#include <asm/ubi32-pcm.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include "ubi32.h" - -struct ubi32_snd_runtime_data { - dma_addr_t dma_buffer; /* Physical address of DMA buffer */ - dma_addr_t dma_buffer_end; /* First address beyond end of DMA buffer */ - size_t period_size; - dma_addr_t period_ptr; /* Physical address of next period */ - unsigned int flags; -}; - -static void snd_ubi32_vp_int_set(struct snd_pcm *pcm) -{ - struct ubi32_snd_priv *ubi32_priv = pcm->private_data; - ubi32_priv->ar->int_req |= (1 << ubi32_priv->irq_idx); - ubicom32_set_interrupt(ubi32_priv->tx_irq); -} - -static snd_pcm_uframes_t snd_ubi32_pcm_pointer(struct snd_pcm_substream *substream) -{ - - struct ubi32_snd_priv *ubi32_priv = snd_pcm_substream_chip(substream); - struct audio_dev_regs *adr = ubi32_priv->adr; - struct snd_pcm_runtime *runtime = substream->runtime; - struct ubi32_snd_runtime_data *ubi32_rd = substream->runtime->private_data; - - dma_addr_t read_pos; - - snd_pcm_uframes_t frames; - if (!adr->primary_os_buffer_ptr) { - /* - * If primary_os_buffer_ptr is NULL (e.g. right after the HW is started or - * when the HW is stopped), then handle this case separately. - */ - return 0; - } - - read_pos = (dma_addr_t)adr->primary_os_buffer_ptr; - frames = bytes_to_frames(runtime, read_pos - ubi32_rd->dma_buffer); - if (frames == runtime->buffer_size) { - frames = 0; - } - return frames; -} - -/* - * Audio trigger - */ -static int snd_ubi32_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct ubi32_snd_priv *ubi32_priv = substream->pcm->private_data; - struct audio_dev_regs *adr = ubi32_priv->adr; - struct ubi32_snd_runtime_data *ubi32_rd = substream->runtime->private_data; - int ret = 0; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_trigger cmd=%d=", cmd); -#endif - - if (adr->command != AUDIO_CMD_NONE) { - snd_printk(KERN_WARNING "Can't send command to audio device at this time\n"); - // Set a timer to call this function back later. How to do this? - return 0; - } - - /* - * Set interrupt flag to indicate that we interrupted audio device - * to send a command - */ - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "START\n"); -#endif - /* - * Ready the DMA transfer - */ - ubi32_rd->period_ptr = ubi32_rd->dma_buffer; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "trigger period_ptr=%lx\n", (unsigned long)ubi32_rd->period_ptr); -#endif - adr->dma_xfer_requests[0].ptr = (void *)ubi32_rd->period_ptr; - adr->dma_xfer_requests[0].ctr = ubi32_rd->period_size; - adr->dma_xfer_requests[0].active = 1; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "xfer_request 0 ptr=0x%x ctr=%u\n", ubi32_rd->period_ptr, ubi32_rd->period_size); -#endif - - ubi32_rd->period_ptr += ubi32_rd->period_size; - adr->dma_xfer_requests[1].ptr = (void *)ubi32_rd->period_ptr; - adr->dma_xfer_requests[1].ctr = ubi32_rd->period_size; - adr->dma_xfer_requests[1].active = 1; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "xfer_request 1 ptr=0x%x ctr=%u\n", ubi32_rd->period_ptr, ubi32_rd->period_size); -#endif - - /* - * Tell the VP that we want to begin playback by filling in the - * command field and then interrupting the audio VP - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_START; - snd_ubi32_vp_int_set(substream->pcm); - break; - - case SNDRV_PCM_TRIGGER_STOP: - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "STOP\n"); -#endif - - /* - * Tell the VP that we want to stop playback by filling in the - * command field and then interrupting the audio VP - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_STOP; - snd_ubi32_vp_int_set(substream->pcm); - break; - - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "PAUSE_PUSH\n"); -#endif - - /* - * Tell the VP that we want to pause playback by filling in the - * command field and then interrupting the audio VP - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_PAUSE; - snd_ubi32_vp_int_set(substream->pcm); - break; - - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "PAUSE_RELEASE\n"); -#endif - /* - * Tell the VP that we want to resume paused playback by filling - * in the command field and then interrupting the audio VP - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_RESUME; - snd_ubi32_vp_int_set(substream->pcm); - break; - - default: - snd_printk(KERN_WARNING "Unhandled trigger\n"); - ret = -EINVAL; - break; - } - - return ret; -} - -/* - * Prepare to transfer an audio stream to the codec - */ -static int snd_ubi32_pcm_prepare(struct snd_pcm_substream *substream) -{ - /* - * Configure registers and setup the runtime instance for DMA transfers - */ - struct ubi32_snd_priv *ubi32_priv = substream->pcm->private_data; - struct audio_dev_regs *adr = ubi32_priv->adr; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_prepare: sending STOP command to audio device\n"); -#endif - - /* - * Make sure the audio device is stopped - */ - - /* - * Set interrupt flag to indicate that we interrupted audio device - * to send a command - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_STOP; - snd_ubi32_vp_int_set(substream->pcm); - - return 0; -} - -/* - * Allocate DMA buffers from preallocated memory. - * Preallocation was done in snd_ubi32_pcm_new() - */ -static int snd_ubi32_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct ubi32_snd_priv *ubi32_priv = substream->pcm->private_data; - struct audio_dev_regs *adr = ubi32_priv->adr; - struct ubi32_snd_runtime_data *ubi32_rd = substream->runtime->private_data; - - /* - * Use pre-allocated memory from ubi32_snd_pcm_new() to satisfy - * this memory request. - */ - int ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); - if (ret < 0) { - return ret; - } - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_hw_params\n"); -#endif - - if (!(adr->channel_mask & (1 << params_channels(hw_params)))) { - snd_printk(KERN_INFO "snd_ubi32_pcm_hw_params unsupported number of channels %d mask %08x\n", params_channels(hw_params), adr->channel_mask); - return -EINVAL; - } - - if (ubi32_priv->set_channels) { - int ret = ubi32_priv->set_channels(ubi32_priv, params_channels(hw_params)); - if (ret) { - snd_printk(KERN_WARNING "Unable to set channels to %d, ret=%d\n", params_channels(hw_params), ret); - return ret; - } - } - - if (ubi32_priv->set_rate) { - int ret = ubi32_priv->set_rate(ubi32_priv, params_rate(hw_params)); - if (ret) { - snd_printk(KERN_WARNING "Unable to set rate to %d, ret=%d\n", params_rate(hw_params), ret); - return ret; - } - } - - if (ubi32_priv->pdata->set_rate) { - int ret = ubi32_priv->pdata->set_rate(ubi32_priv->pdata->appdata, params_rate(hw_params)); - if (ret) { - snd_printk(KERN_WARNING "Unable to set rate to %d, ret=%d\n", params_rate(hw_params), ret); - return ret; - } - } - - if (adr->command != AUDIO_CMD_NONE) { - snd_printk(KERN_WARNING "snd_ubi32_pcm_hw_params: tio busy\n"); - return -EAGAIN; - } - - if (params_format(hw_params) == SNDRV_PCM_FORMAT_S16_LE) { - adr->flags |= CMD_START_FLAG_LE; - } else { - adr->flags &= ~CMD_START_FLAG_LE; - } - adr->channels = params_channels(hw_params); - adr->sample_rate = params_rate(hw_params); - adr->command = AUDIO_CMD_SETUP; - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - snd_ubi32_vp_int_set(substream->pcm); - - /* - * Wait for the command to complete - */ - while (adr->command != AUDIO_CMD_NONE) { - udelay(1); - } - - /* - * Put the DMA info into the DMA descriptor that we will - * use to do transfers to our audio VP "hardware" - */ - - /* - * Mark both DMA transfers as not ready/inactive - */ - adr->dma_xfer_requests[0].active = 0; - adr->dma_xfer_requests[1].active = 0; - - /* - * Put the location of the buffer into the runtime data instance - */ - ubi32_rd->dma_buffer = (dma_addr_t)runtime->dma_area; - ubi32_rd->dma_buffer_end = (dma_addr_t)(runtime->dma_area + runtime->dma_bytes); - - /* - * Get the period size - */ - ubi32_rd->period_size = params_period_bytes(hw_params); - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "DMA for ubi32 audio initialized dma_area=0x%x dma_bytes=%d, period_size=%d\n", (unsigned int)runtime->dma_area, (unsigned int)runtime->dma_bytes, ubi32_rd->period_size); - snd_printk(KERN_INFO "Private buffer ubi32_rd: dma_buffer=0x%x dma_buffer_end=0x%x ret=%d\n", ubi32_rd->dma_buffer, ubi32_rd->dma_buffer_end, ret); -#endif - - return ret; -} - -/* - * This is the reverse of snd_ubi32_pcm_hw_params - */ -static int snd_ubi32_pcm_hw_free(struct snd_pcm_substream *substream) -{ -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_hw_free\n"); -#endif - return snd_pcm_lib_free_pages(substream); -} - -/* - * Audio virtual peripheral capabilities (capture and playback are identical) - */ -static struct snd_pcm_hardware snd_ubi32_pcm_hw = -{ - .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | - SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME), - .buffer_bytes_max = (64*1024), - .period_bytes_min = 64, - .period_bytes_max = 8184,//8184,//8176, - .periods_min = 2, - .periods_max = 255, - .fifo_size = 0, // THIS IS IGNORED BY ALSA -}; - -/* - * We fill this in later - */ -static struct snd_pcm_hw_constraint_list ubi32_pcm_rates; - -/* - * snd_ubi32_pcm_close - */ -static int snd_ubi32_pcm_close(struct snd_pcm_substream *substream) -{ - /* Disable codec, stop DMA, free private data structures */ - //struct ubi32_snd_priv *ubi32_priv = snd_pcm_substream_chip(substream); - struct ubi32_snd_runtime_data *ubi32_rd = substream->runtime->private_data; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_close\n"); -#endif - - substream->runtime->private_data = NULL; - - kfree(ubi32_rd); - - return 0; -} - -/* - * snd_ubi32_pcm_open - */ -static int snd_ubi32_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct ubi32_snd_runtime_data *ubi32_rd; - int ret = 0; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "ubi32 pcm open\n"); -#endif - - /* Associate capabilities with component */ - runtime->hw = snd_ubi32_pcm_hw; - - /* - * Inform ALSA about constraints of the audio device - */ - ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &ubi32_pcm_rates); - if (ret < 0) { - snd_printk(KERN_INFO "invalid rate\n"); - goto out; - } - - /* Force the buffer size to be an integer multiple of period size */ - ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); - if (ret < 0) { - snd_printk(KERN_INFO "invalid period\n"); - goto out; - } - /* Initialize structures/registers */ - ubi32_rd = kzalloc(sizeof(struct ubi32_snd_runtime_data), GFP_KERNEL); - if (ubi32_rd == NULL) { - ret = -ENOMEM; - goto out; - } - - runtime->private_data = ubi32_rd; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_open returned 0\n"); -#endif - - return 0; -out: -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "snd_ubi32_pcm_open returned %d\n", ret); -#endif - - return ret; -} - -static struct snd_pcm_ops snd_ubi32_pcm_ops = { - .open = snd_ubi32_pcm_open, /* Open */ - .close = snd_ubi32_pcm_close, /* Close */ - .ioctl = snd_pcm_lib_ioctl, /* Generic IOCTL handler */ - .hw_params = snd_ubi32_pcm_hw_params, /* Hardware parameters/capabilities */ - .hw_free = snd_ubi32_pcm_hw_free, /* Free function for hw_params */ - .prepare = snd_ubi32_pcm_prepare, - .trigger = snd_ubi32_pcm_trigger, - .pointer = snd_ubi32_pcm_pointer, -}; - -/* - * Interrupt handler that gets called when the audio device - * interrupts Linux - */ -static irqreturn_t snd_ubi32_pcm_interrupt(int irq, void *appdata) -{ - struct snd_pcm *pcm = (struct snd_pcm *)appdata; - struct ubi32_snd_priv *ubi32_priv = pcm->private_data; - struct audio_dev_regs *adr = ubi32_priv->adr; - struct snd_pcm_substream *substream; - struct ubi32_snd_runtime_data *ubi32_rd; - int dma_to_fill = 0; - - /* - * Check to see if the interrupt is for us - */ - if (!(ubi32_priv->ar->int_status & (1 << ubi32_priv->irq_idx))) { - return IRQ_NONE; - } - - /* - * Clear the interrupt - */ - ubi32_priv->ar->int_status &= ~(1 << ubi32_priv->irq_idx); - - /* - * We only have one stream since we don't mix. Therefore - * we don't need to search through substreams. - */ - if (ubi32_priv->is_capture) { - substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; - } else { - substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; - } - - if (!substream->runtime) { - snd_printk(KERN_WARNING "No runtime data\n"); - return IRQ_NONE; - } - - ubi32_rd = substream->runtime->private_data; - -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "Ubi32 ALSA interrupt\n"); -#endif - - if (ubi32_rd == NULL) { - snd_printk(KERN_WARNING "No private data\n"); - return IRQ_NONE; - } - - // Check interrupt cause - if (0) { - // Handle the underflow case - } else if ((adr->status & AUDIO_STATUS_PLAY_DMA0_REQUEST) || - (adr->status & AUDIO_STATUS_PLAY_DMA1_REQUEST)) { - if (adr->status & AUDIO_STATUS_PLAY_DMA0_REQUEST) { - dma_to_fill = 0; - adr->status &= ~AUDIO_STATUS_PLAY_DMA0_REQUEST; - } else if (adr->status & AUDIO_STATUS_PLAY_DMA1_REQUEST) { - dma_to_fill = 1; - adr->status &= ~AUDIO_STATUS_PLAY_DMA1_REQUEST; - } - ubi32_rd->period_ptr += ubi32_rd->period_size; - if (ubi32_rd->period_ptr >= ubi32_rd->dma_buffer_end) { - ubi32_rd->period_ptr = ubi32_rd->dma_buffer; - } - adr->dma_xfer_requests[dma_to_fill].ptr = (void *)ubi32_rd->period_ptr; - adr->dma_xfer_requests[dma_to_fill].ctr = ubi32_rd->period_size; - adr->dma_xfer_requests[dma_to_fill].active = 1; -#ifdef CONFIG_SND_DEBUG - snd_printk(KERN_INFO "xfer_request %d ptr=0x%x ctr=%u\n", dma_to_fill, ubi32_rd->period_ptr, ubi32_rd->period_size); -#endif - adr->int_flags |= AUDIO_INT_FLAG_MORE_SAMPLES; - snd_ubi32_vp_int_set(substream->pcm); - } - // If we are interrupted by the VP, that means we completed - // processing one period of audio. We need to inform the upper - // layers of ALSA of this. - snd_pcm_period_elapsed(substream); - - return IRQ_HANDLED; -} - -void __devexit snd_ubi32_pcm_remove(struct ubi32_snd_priv *ubi32_priv) -{ - struct snd_pcm *pcm = ubi32_priv->pcm; - free_irq(ubi32_priv->rx_irq, pcm); -} - -#if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 -#error "Change this table to match pcm.h" -#endif -static unsigned int rates[] __initdata = {5512, 8000, 11025, 16000, 22050, - 32000, 44100, 48000, 64000, 88200, - 96000, 176400, 192000}; - -/* - * snd_ubi32_pcm_probe - */ -int __devinit snd_ubi32_pcm_probe(struct ubi32_snd_priv *ubi32_priv, struct platform_device *pdev) -{ - struct snd_pcm *pcm; - int ret, err; - int i; - int j; - int nrates; - unsigned int rate_max = 0; - unsigned int rate_min = 0xFFFFFFFF; - unsigned int rate_mask = 0; - struct audio_dev_regs *adr; - struct resource *res_adr; - struct resource *res_irq_tx; - struct resource *res_irq_rx; - struct ubi32pcm_platform_data *pdata; - - pdata = pdev->dev.platform_data; - if (!pdata) { - return -ENODEV; - } - - /* - * Get our resources, adr is the hardware driver base address - * and the tx and rx irqs are used to communicate with the - * hardware driver. - */ - res_adr = platform_get_resource(pdev, IORESOURCE_MEM, AUDIO_MEM_RESOURCE); - res_irq_tx = platform_get_resource(pdev, IORESOURCE_IRQ, AUDIO_TX_IRQ_RESOURCE); - res_irq_rx = platform_get_resource(pdev, IORESOURCE_IRQ, AUDIO_RX_IRQ_RESOURCE); - if (!res_adr || !res_irq_tx || !res_irq_rx) { - snd_printk(KERN_WARNING "Could not get resources"); - return -ENODEV; - } - - ubi32_priv->ar = (struct audio_regs *)res_adr->start; - ubi32_priv->tx_irq = res_irq_tx->start; - ubi32_priv->rx_irq = res_irq_rx->start; - ubi32_priv->irq_idx = pdata->inst_num; - ubi32_priv->adr = &(ubi32_priv->ar->adr[pdata->inst_num]); - - /* - * Check the version - */ - adr = ubi32_priv->adr; - if (adr->version != AUDIO_DEV_REGS_VERSION) { - snd_printk(KERN_WARNING "This audio_dev_reg is not compatible with this driver\n"); - return -ENODEV; - } - - /* - * Find out the standard rates, also find max and min rates - */ - for (i = 0; i < ARRAY_SIZE(rates); i++) { - int found = 0; - for (j = 0; j < adr->n_sample_rates; j++) { - if (rates[i] == adr->sample_rates[j]) { - /* - * Check to see if it is supported by the dac - */ - if ((rates[i] >= ubi32_priv->min_sample_rate) && - (!ubi32_priv->max_sample_rate || - (ubi32_priv->max_sample_rate && (rates[i] <= ubi32_priv->max_sample_rate)))) { - found = 1; - rate_mask |= (1 << i); - nrates++; - if (rates[i] < rate_min) { - rate_min = rates[i]; - } - if (rates[i] > rate_max) { - rate_max = rates[i]; - } - break; - } - } - } - if (!found) { - rate_mask |= SNDRV_PCM_RATE_KNOT; - } - } - - snd_ubi32_pcm_hw.rates = rate_mask; - snd_ubi32_pcm_hw.rate_min = rate_min; - snd_ubi32_pcm_hw.rate_max = rate_max; - ubi32_pcm_rates.count = adr->n_sample_rates; - ubi32_pcm_rates.list = (unsigned int *)adr->sample_rates; - ubi32_pcm_rates.mask = 0; - - for (i = 0; i < 32; i++) { - if (adr->channel_mask & (1 << i)) { - if (!snd_ubi32_pcm_hw.channels_min) { - snd_ubi32_pcm_hw.channels_min = i; - } - snd_ubi32_pcm_hw.channels_max = i; - } - } - snd_printk(KERN_INFO "Ubi32PCM: channels_min:%u channels_max:%u\n", - snd_ubi32_pcm_hw.channels_min, - snd_ubi32_pcm_hw.channels_max); - - if (adr->caps & AUDIONODE_CAP_BE) { - snd_ubi32_pcm_hw.formats |= SNDRV_PCM_FMTBIT_S16_BE; - } - if (adr->caps & AUDIONODE_CAP_LE) { - snd_ubi32_pcm_hw.formats |= SNDRV_PCM_FMTBIT_S16_LE; - } - - snd_printk(KERN_INFO "Ubi32PCM: rates:%08x min:%u max:%u count:%d fmts:%016llx (%s)\n", - snd_ubi32_pcm_hw.rates, - snd_ubi32_pcm_hw.rate_min, - snd_ubi32_pcm_hw.rate_max, - ubi32_pcm_rates.count, - snd_ubi32_pcm_hw.formats, - ubi32_priv->is_capture ? "capture" : "playback"); - - if (ubi32_priv->is_capture) { - ret = snd_pcm_new(ubi32_priv->card, "Ubi32 PCM", 0, 0, 1, &pcm); - } else { - ret = snd_pcm_new(ubi32_priv->card, "Ubi32 PCM", 0, 1, 0, &pcm); - } - - if (ret < 0) { - return ret; - } - - pcm->private_data = ubi32_priv; - ubi32_priv->pcm = pcm; - ubi32_priv->pdata = pdata; - - pcm->info_flags = 0; - - strcpy(pcm->name, "Ubi32-PCM"); - - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), - 45*1024, 64*1024); - - if (ubi32_priv->is_capture) { - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ubi32_pcm_ops); - } else { - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ubi32_pcm_ops); - } - - /* - * Start up the audio device - */ - adr->int_flags |= AUDIO_INT_FLAG_COMMAND; - adr->command = AUDIO_CMD_ENABLE; - snd_ubi32_vp_int_set(pcm); - - /* - * Request IRQ - */ - err = request_irq(ubi32_priv->rx_irq, snd_ubi32_pcm_interrupt, IRQF_SHARED | IRQF_DISABLED, pcm->name, pcm); - if (err) { - snd_printk(KERN_WARNING "request_irq failed: irq=%d err=%d\n", ubi32_priv->rx_irq, err); - return -ENODEV; - } - - return ret; - -} |