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C++ snd_pcm_set_runtime_buffer函数代码示例

本文整理汇总了C++中snd_pcm_set_runtime_buffer函数的典型用法代码示例。如果您正苦于以下问题：C++ snd_pcm_set_runtime_buffer函数的具体用法？C++ snd_pcm_set_runtime_buffer怎么用？C++ snd_pcm_set_runtime_buffer使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了snd_pcm_set_runtime_buffer函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: omap_pcm_hw_free

static int omap_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct omap_runtime_data *prtd = runtime->private_data;

	if (prtd->dma_data == NULL)
		return 0;

	omap_dma_unlink_lch(prtd->dma_ch, prtd->dma_ch);
	omap_free_dma(prtd->dma_ch);
	prtd->dma_data = NULL;

	snd_pcm_set_runtime_buffer(substream, NULL);

	return 0;
}
开发者ID:Kra1o5，项目名称:android_kernel_huawei_u8815-gb，代码行数:16，代码来源:omap-pcm.c

示例2: s3c24xx_pcm_hw_free

static int s3c24xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct s3c24xx_runtime_data *prtd = substream->runtime->private_data;

	s3cdbg("Entered %s\n", __FUNCTION__);

	/* TODO - do we need to ensure DMA flushed */
	snd_pcm_set_runtime_buffer(substream, NULL);

	if (prtd->params) {
		s3c2410_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
	}

	return 0;
}
开发者ID:Astinj，项目名称:I5700-kernel-2.6.32.9，代码行数:16，代码来源:s3c-pcm.c

示例3: snd_imx_pcm_hw_params

static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
	int i;
	unsigned long dma_addr;

	imx_ssi_dma_alloc(substream);

	iprtd->size = params_buffer_bytes(params);
	iprtd->periods = params_periods(params);
	iprtd->period = params_period_bytes(params);
	iprtd->offset = 0;
	iprtd->period_time = HZ / (params_rate(params) /
			params_period_size(params));

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);

	if (iprtd->sg_count != iprtd->periods) {
		kfree(iprtd->sg_list);

		iprtd->sg_list = kcalloc(iprtd->periods + 1,
				sizeof(struct scatterlist), GFP_KERNEL);
		if (!iprtd->sg_list)
			return -ENOMEM;
		iprtd->sg_count = iprtd->periods + 1;
	}

	sg_init_table(iprtd->sg_list, iprtd->sg_count);
	dma_addr = runtime->dma_addr;

	for (i = 0; i < iprtd->periods; i++) {
		iprtd->sg_list[i].page_link = 0;
		iprtd->sg_list[i].offset = 0;
		iprtd->sg_list[i].dma_address = dma_addr;
		iprtd->sg_list[i].length = iprtd->period;
		dma_addr += iprtd->period;
	}

	/* close the loop */
	iprtd->sg_list[iprtd->sg_count - 1].offset = 0;
	iprtd->sg_list[iprtd->sg_count - 1].length = 0;
	iprtd->sg_list[iprtd->sg_count - 1].page_link =
			((unsigned long) iprtd->sg_list | 0x01) & ~0x02;
	return 0;
}
开发者ID:AdiPat，项目名称:android_kernel_tegra_n1，代码行数:47，代码来源:imx-pcm-dma-mx2.c

示例4: snd_imx_pcm_hw_params

static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct imx_pcm_runtime_data *iprtd = runtime->private_data;

	iprtd->size = params_buffer_bytes(params);
	iprtd->periods = params_periods(params);
	iprtd->period = params_period_bytes(params) ;
	iprtd->offset = 0;
	iprtd->last_offset = 0;
	iprtd->poll_time = HZ / (params_rate(params) / params_period_size(params));

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);

	return 0;
}
开发者ID:mbanana，项目名称:linux-2.6，代码行数:17，代码来源:imx-pcm-fiq.c

示例5: rockchip_pcm_hw_free

static int rockchip_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct rockchip_runtime_data *prtd = substream->runtime->private_data;

	DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
	/* TODO - do we need to ensure DMA flushed */
	snd_pcm_set_runtime_buffer(substream, NULL);

	if (prtd->params) {
#ifdef CONFIG_SND_I2S_DMA_EVENT_DYNAMIC		
		rk29_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
#endif		
	}

	return 0;
}
开发者ID:markyzq，项目名称:px2-android-kernel-3.0，代码行数:17，代码来源:rk29_pcm.c

示例6: hi3630_srcup_normal_hw_free

static int hi3630_srcup_normal_hw_free(struct snd_pcm_substream *substream)
{
	struct hi3630_srcup_runtime_data *prtd = substream->runtime->private_data;
	struct hi3630_srcup_data *pdata = prtd->pdata;
	int ret = 0;

	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
		/* clear interrupt */
		hi3630_srcup_reg_write(pdata, HI3630_SRCUP_CH_INT_FLAG_REG, SRCUP_CH0_MASK);

		ret = snd_pcm_lib_free_pages(substream);
	}

	snd_pcm_set_runtime_buffer(substream, NULL);

	return ret;
}
开发者ID:HuaweiHonor4C，项目名称:kernel_hi6210sft_mm，代码行数:17，代码来源:hi3630_srcup_normal.c

示例7: snd_pcm_lib_free_pages

/**
 * snd_pcm_lib_free_pages - release the allocated DMA buffer.
 * @substream: the substream to release the DMA buffer
 *
 * Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
 *
 * Returns zero if successful, or a negative error code on failure.
 */
int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream)
{
	snd_pcm_runtime_t *runtime;

	snd_assert(substream != NULL, return -EINVAL);
	runtime = substream->runtime;
	snd_assert(runtime != NULL, return -EINVAL);
	if (runtime->dma_area == NULL)
		return 0;
	if (runtime->dma_buffer_p != &substream->dma_buffer) {
		/* it's a newly allocated buffer.  release it now. */
		snd_dma_free_pages(runtime->dma_buffer_p);
		kfree(runtime->dma_buffer_p);
	}
	snd_pcm_set_runtime_buffer(substream, NULL);
	return 0;
}
开发者ID:Dronevery，项目名称:JetsonTK1-kernel，代码行数:25，代码来源:pcm_memory.c

示例8: snd_pcm_lib_free_pages

/**
 * snd_pcm_lib_free_pages - release the allocated DMA buffer.
 * @substream: the substream to release the DMA buffer
 *
 * Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
 *
 * Return: Zero if successful, or a negative error code on failure.
 */
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime;

	if (PCM_RUNTIME_CHECK(substream))
		return -EINVAL;
	runtime = substream->runtime;
	if (runtime->dma_area == NULL)
		return 0;
	if (runtime->dma_buffer_p != &substream->dma_buffer) {
		/* it's a newly allocated buffer.  release it now. */
		snd_dma_free_pages(runtime->dma_buffer_p);
		kfree(runtime->dma_buffer_p);
	}
	snd_pcm_set_runtime_buffer(substream, NULL);
	return 0;
}
开发者ID:AlexShiLucky，项目名称:linux，代码行数:25，代码来源:pcm_memory.c

示例9: sun4i_pcm_hw_free

static int sun4i_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct sun4i_runtime_data *prtd = substream->runtime->private_data;
	
	/* TODO - do we need to ensure DMA flushed */
	if(prtd->params)
  	sw_dma_ctrl(prtd->params->channel, SW_DMAOP_FLUSH);
  	
	snd_pcm_set_runtime_buffer(substream, NULL);
  
	if (prtd->params) {
		sw_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
	}

	return 0;
}
开发者ID:panlinbing，项目名称:lichee_linux-3.0，代码行数:17，代码来源:sun4i-i2sdma.c

示例10: sunxi_pcm_hw_params

static int sunxi_pcm_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct sunxi_dma_params *dmap;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct device *dev = rtd->platform->dev;
	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
	struct dma_slave_config slave_config;
	int ret;

	dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
	ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
	if (ret) {
		dev_err(dev, "hw params config failed with err %d\n", ret);
		return ret;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		if (SNDRV_PCM_FORMAT_S16_LE == params_format(params)) {
			slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
			slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		} else {
			slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
			slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		}
		slave_config.dst_addr = dmap->dma_addr;
		slave_config.dst_maxburst = 4;
		slave_config.src_maxburst = 4;
		slave_config.slave_id = sunxi_slave_id(DRQDST_DAUDIO_1_TX, DRQSRC_SDRAM);
	} else {
		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		slave_config.src_addr = dmap->dma_addr;
		slave_config.dst_maxburst = 4;
		slave_config.src_maxburst = 4;
		slave_config.slave_id = sunxi_slave_id(DRQDST_SDRAM, DRQSRC_DAUDIO_1_RX);
	}
	ret = dmaengine_slave_config(chan, &slave_config);
	if (ret < 0) {
		dev_err(dev, "dma slave config failed with err %d\n", ret);
		return ret;
	}

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	return 0;
}
开发者ID:GREYFOXRGR，项目名称:BPI-M3-bsp，代码行数:46，代码来源:sunxi-daudiodma1.c

示例11: printk

/* Release all dynamiclly allocated resources.
*/
static int i2sirx_i2so_mix_hw_free
(
    struct snd_pcm_substream *substream
)
{
    struct i2sirx_i2so_mix_info *mix;
    
    printk("%s,%d\n", __FUNCTION__, __LINE__);

    mix = substream->runtime->private_data;
    
    snd_pcm_set_runtime_buffer(substream, NULL);

    //printk("%s,%d\n", __FUNCTION__, __LINE__);

    return(0);
}
开发者ID:qttest1，项目名称:PDK_GoBian，代码行数:19，代码来源:ali_alsa_i2sirx_i2so_mix.c

示例12: ux500_pcm_dma_hw_free

static void ux500_pcm_dma_hw_free(struct device *dev,
				struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_dma_buffer *buf = runtime->dma_buffer_p;

	if (runtime->dma_area == NULL)
		return;

	if (buf != &substream->dma_buffer) {
		dma_free_coherent(buf->dev.dev, buf->bytes, buf->area,
				buf->addr);
		kfree(runtime->dma_buffer_p);
	}

	snd_pcm_set_runtime_buffer(substream, NULL);
}
开发者ID:ARMWorks，项目名称:FA_2451_Linux_Kernel，代码行数:17，代码来源:ux500_pcm.c

示例13: tegra_pcm_hw_params

int tegra_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct device *dev = rtd->platform->dev;
	struct dma_chan *chan;
	struct tegra_pcm_dma_params *dmap;
	struct dma_slave_config slave_config;
	int ret;

	if (rtd->dai_link->no_pcm)
		return 0;

	chan = snd_dmaengine_pcm_get_chan(substream);
	dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
	if (!dmap)
		return 0;

	ret = snd_hwparams_to_dma_slave_config(substream, params,
						&slave_config);
	if (ret) {
		dev_err(dev, "hw params config failed with err %d\n", ret);
		return ret;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		slave_config.dst_addr = dmap->addr;
		slave_config.dst_maxburst = 4;
	} else {
		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		slave_config.src_addr = dmap->addr;
		slave_config.src_maxburst = 4;
	}
	slave_config.slave_id = dmap->req_sel;

	ret = dmaengine_slave_config(chan, &slave_config);
	if (ret < 0) {
		dev_err(dev, "dma slave config failed with err %d\n", ret);
		return ret;
	}

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	return 0;
}
开发者ID:FrozenCow，项目名称:FIRE-ICE，代码行数:45，代码来源:tegra_pcm.c

示例14: lpc3xxx_pcm_hw_params

/*
 * PCM operations
 */
static int lpc3xxx_pcm_hw_params(struct snd_pcm_substream *substream,
			         struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct lpc3xxx_dma_data *prtd = runtime->private_data;

	/* this may get called several times by oss emulation
	 * with different params
	 */
	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	runtime->dma_bytes = params_buffer_bytes(params);

	prtd->dma_buffer = runtime->dma_addr;
	prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
	prtd->period_size = params_period_bytes(params);

	return 0;
}
开发者ID:AdrianHuang，项目名称:uclinux-robutest，代码行数:21，代码来源:lpc3xxx-pcm.c

示例15: bcm947xx_pcm_hw_free

static int bcm947xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;

	DBG("%s %s\n", __FUNCTION__, bcm947xx_direction_str(substream));

	snd_pcm_set_runtime_buffer(substream, NULL);

	/* This stream is no longer consider in-use. */
	snd_bcm->in_use &= ~(1 << substream->stream);

	if (!snd_bcm->in_use)
	{	/* All streams are not used. */
		bcm947xx_pcm_clear_joint_duplex_settings(snd_bcm);
	}

	return 0;
}
开发者ID:Antares84，项目名称:asuswrt-merlin，代码行数:19，代码来源:bcm947xx-pcm.c


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