diff options
Diffstat (limited to 'sound/soc/davinci')
| -rw-r--r-- | sound/soc/davinci/Kconfig | 10 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-evm.c | 85 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-i2s.c | 1 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 461 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.h | 1 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-pcm.c | 8 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-pcm.h | 8 | ||||
| -rw-r--r-- | sound/soc/davinci/davinci-vcif.c | 1 | ||||
| -rw-r--r-- | sound/soc/davinci/edma-pcm.c | 57 | ||||
| -rw-r--r-- | sound/soc/davinci/edma-pcm.h | 25 |
10 files changed, 440 insertions, 217 deletions
diff --git a/sound/soc/davinci/Kconfig b/sound/soc/davinci/Kconfig index a8ec1fc3e4d..50a098749b9 100644 --- a/sound/soc/davinci/Kconfig +++ b/sound/soc/davinci/Kconfig @@ -18,7 +18,7 @@ config SND_DAVINCI_SOC_GENERIC_EVM config SND_AM33XX_SOC_EVM tristate "SoC Audio for the AM33XX chip based boards" - depends on SND_DAVINCI_SOC && SOC_AM33XX + depends on SND_DAVINCI_SOC && SOC_AM33XX && I2C select SND_DAVINCI_SOC_GENERIC_EVM help Say Y or M if you want to add support for SoC audio on AM33XX @@ -28,7 +28,7 @@ config SND_AM33XX_SOC_EVM config SND_DAVINCI_SOC_EVM tristate "SoC Audio support for DaVinci DM6446, DM355 or DM365 EVM" - depends on SND_DAVINCI_SOC + depends on SND_DAVINCI_SOC && I2C depends on MACH_DAVINCI_EVM || MACH_DAVINCI_DM355_EVM || MACH_DAVINCI_DM365_EVM select SND_DAVINCI_SOC_GENERIC_EVM help @@ -56,7 +56,7 @@ endchoice config SND_DM6467_SOC_EVM tristate "SoC Audio support for DaVinci DM6467 EVM" - depends on SND_DAVINCI_SOC && MACH_DAVINCI_DM6467_EVM + depends on SND_DAVINCI_SOC && MACH_DAVINCI_DM6467_EVM && I2C select SND_DAVINCI_SOC_GENERIC_EVM select SND_SOC_SPDIF @@ -65,7 +65,7 @@ config SND_DM6467_SOC_EVM config SND_DA830_SOC_EVM tristate "SoC Audio support for DA830/OMAP-L137 EVM" - depends on SND_DAVINCI_SOC && MACH_DAVINCI_DA830_EVM + depends on SND_DAVINCI_SOC && MACH_DAVINCI_DA830_EVM && I2C select SND_DAVINCI_SOC_GENERIC_EVM help @@ -74,7 +74,7 @@ config SND_DA830_SOC_EVM config SND_DA850_SOC_EVM tristate "SoC Audio support for DA850/OMAP-L138 EVM" - depends on SND_DAVINCI_SOC && MACH_DAVINCI_DA850_EVM + depends on SND_DAVINCI_SOC && MACH_DAVINCI_DA850_EVM && I2C select SND_DAVINCI_SOC_GENERIC_EVM help Say Y if you want to add support for SoC audio on TI diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c index 5e3bc3c6801..a50010e2891 100644 --- a/sound/soc/davinci/davinci-evm.c +++ b/sound/soc/davinci/davinci-evm.c @@ -17,6 +17,7 @@ #include <linux/platform_data/edma.h> #include <linux/i2c.h> #include <linux/of_platform.h> +#include <linux/clk.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -30,17 +31,41 @@ #include "davinci-i2s.h" struct snd_soc_card_drvdata_davinci { + struct clk *mclk; unsigned sysclk; }; +static int evm_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *soc_card = rtd->card; + struct snd_soc_card_drvdata_davinci *drvdata = + snd_soc_card_get_drvdata(soc_card); + + if (drvdata->mclk) + return clk_prepare_enable(drvdata->mclk); + + return 0; +} + +static void evm_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *soc_card = rtd->card; + struct snd_soc_card_drvdata_davinci *drvdata = + snd_soc_card_get_drvdata(soc_card); + + if (drvdata->mclk) + clk_disable_unprepare(drvdata->mclk); +} + static int evm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_codec *codec = rtd->codec; - struct snd_soc_card *soc_card = codec->card; + struct snd_soc_card *soc_card = rtd->card; int ret = 0; unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *) snd_soc_card_get_drvdata(soc_card))->sysclk; @@ -59,6 +84,8 @@ static int evm_hw_params(struct snd_pcm_substream *substream, } static struct snd_soc_ops evm_ops = { + .startup = evm_startup, + .shutdown = evm_shutdown, .hw_params = evm_hw_params, }; @@ -95,35 +122,29 @@ static const struct snd_soc_dapm_route audio_map[] = { /* Logic for a aic3x as connected on a davinci-evm */ static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) { + struct snd_soc_card *card = rtd->card; struct snd_soc_codec *codec = rtd->codec; - struct snd_soc_dapm_context *dapm = &codec->dapm; - struct device_node *np = codec->card->dev->of_node; + struct device_node *np = card->dev->of_node; int ret; /* Add davinci-evm specific widgets */ - snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets, + snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets, ARRAY_SIZE(aic3x_dapm_widgets)); if (np) { - ret = snd_soc_of_parse_audio_routing(codec->card, - "ti,audio-routing"); + ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); if (ret) return ret; } else { /* Set up davinci-evm specific audio path audio_map */ - snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); + snd_soc_dapm_add_routes(&card->dapm, audio_map, + ARRAY_SIZE(audio_map)); } /* not connected */ - snd_soc_dapm_disable_pin(dapm, "MONO_LOUT"); - snd_soc_dapm_disable_pin(dapm, "HPLCOM"); - snd_soc_dapm_disable_pin(dapm, "HPRCOM"); - - /* always connected */ - snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); - snd_soc_dapm_enable_pin(dapm, "Line Out"); - snd_soc_dapm_enable_pin(dapm, "Mic Jack"); - snd_soc_dapm_enable_pin(dapm, "Line In"); + snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT"); + snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM"); + snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM"); return 0; } @@ -348,6 +369,7 @@ static int davinci_evm_probe(struct platform_device *pdev) of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data; struct snd_soc_card_drvdata_davinci *drvdata = NULL; + struct clk *mclk; int ret = 0; evm_soc_card.dai_link = dai; @@ -367,13 +389,38 @@ static int davinci_evm_probe(struct platform_device *pdev) if (ret) return ret; + mclk = devm_clk_get(&pdev->dev, "mclk"); + if (PTR_ERR(mclk) == -EPROBE_DEFER) { + return -EPROBE_DEFER; + } else if (IS_ERR(mclk)) { + dev_dbg(&pdev->dev, "mclk not found.\n"); + mclk = NULL; + } + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; + drvdata->mclk = mclk; + ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); - if (ret < 0) - return -EINVAL; + + if (ret < 0) { + if (!drvdata->mclk) { + dev_err(&pdev->dev, + "No clock or clock rate defined.\n"); + return -EINVAL; + } + drvdata->sysclk = clk_get_rate(drvdata->mclk); + } else if (drvdata->mclk) { + unsigned int requestd_rate = drvdata->sysclk; + clk_set_rate(drvdata->mclk, drvdata->sysclk); + drvdata->sysclk = clk_get_rate(drvdata->mclk); + if (drvdata->sysclk != requestd_rate) + dev_warn(&pdev->dev, + "Could not get requested rate %u using %u.\n", + requestd_rate, drvdata->sysclk); + } snd_soc_card_set_drvdata(&evm_soc_card, drvdata); ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card); diff --git a/sound/soc/davinci/davinci-i2s.c b/sound/soc/davinci/davinci-i2s.c index ebe82947bab..7682af31d6e 100644 --- a/sound/soc/davinci/davinci-i2s.c +++ b/sound/soc/davinci/davinci-i2s.c @@ -757,7 +757,6 @@ static int davinci_i2s_remove(struct platform_device *pdev) struct davinci_mcbsp_dev *dev = dev_get_drvdata(&pdev->dev); snd_soc_unregister_component(&pdev->dev); - davinci_soc_platform_unregister(&pdev->dev); clk_disable(dev->clk); clk_put(dev->clk); diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 670afa29e30..9afb14629a1 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -33,10 +33,23 @@ #include <sound/initval.h> #include <sound/soc.h> #include <sound/dmaengine_pcm.h> +#include <sound/omap-pcm.h> #include "davinci-pcm.h" #include "davinci-mcasp.h" +#define MCASP_MAX_AFIFO_DEPTH 64 + +struct davinci_mcasp_context { + u32 txfmtctl; + u32 rxfmtctl; + u32 txfmt; + u32 rxfmt; + u32 aclkxctl; + u32 aclkrctl; + u32 pdir; +}; + struct davinci_mcasp { struct davinci_pcm_dma_params dma_params[2]; struct snd_dmaengine_dai_dma_data dma_data[2]; @@ -53,6 +66,9 @@ struct davinci_mcasp { u16 bclk_lrclk_ratio; int streams; + int sysclk_freq; + bool bclk_master; + /* McASP FIFO related */ u8 txnumevt; u8 rxnumevt; @@ -60,15 +76,7 @@ struct davinci_mcasp { bool dat_port; #ifdef CONFIG_PM_SLEEP - struct { - u32 txfmtctl; - u32 rxfmtctl; - u32 txfmt; - u32 rxfmt; - u32 aclkxctl; - u32 aclkrctl; - u32 pdir; - } context; + struct davinci_mcasp_context context; #endif }; @@ -264,25 +272,51 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, { struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); int ret = 0; + u32 data_delay; + bool fs_pol_rising; + bool inv_fs = false; pm_runtime_get_sync(mcasp->dev); switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_A: + mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); + mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); + /* 1st data bit occur one ACLK cycle after the frame sync */ + data_delay = 1; + break; case SND_SOC_DAIFMT_DSP_B: case SND_SOC_DAIFMT_AC97: mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); + /* No delay after FS */ + data_delay = 0; break; - default: + case SND_SOC_DAIFMT_I2S: /* configure a full-word SYNC pulse (LRCLK) */ mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); - - /* make 1st data bit occur one ACLK cycle after the frame sync */ - mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, FSXDLY(1)); - mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, FSRDLY(1)); + /* 1st data bit occur one ACLK cycle after the frame sync */ + data_delay = 1; + /* FS need to be inverted */ + inv_fs = true; break; + case SND_SOC_DAIFMT_LEFT_J: + /* configure a full-word SYNC pulse (LRCLK) */ + mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); + mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); + /* No delay after FS */ + data_delay = 0; + break; + default: + ret = -EINVAL; + goto out; } + mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, FSXDLY(data_delay), + FSXDLY(3)); + mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, FSRDLY(data_delay), + FSRDLY(3)); + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: /* codec is clock and frame slave */ @@ -294,6 +328,7 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, ACLKX | ACLKR); mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AFSX | AFSR); + mcasp->bclk_master = 1; break; case SND_SOC_DAIFMT_CBM_CFS: /* codec is clock master and frame slave */ @@ -305,6 +340,7 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, ACLKX | ACLKR); mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AFSX | AFSR); + mcasp->bclk_master = 0; break; case SND_SOC_DAIFMT_CBM_CFM: /* codec is clock and frame master */ @@ -316,8 +352,8 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, ACLKX | AHCLKX | AFSX | ACLKR | AHCLKR | AFSR); + mcasp->bclk_master = 0; break; - default: ret = -EINVAL; goto out; @@ -326,39 +362,38 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_IB_NF: mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); - mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); - - mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); - mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); + mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); + fs_pol_rising = true; break; - case SND_SOC_DAIFMT_NB_IF: mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); - mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); - - mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); - mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); + mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); + fs_pol_rising = false; break; - case SND_SOC_DAIFMT_IB_IF: mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); - mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); - - mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); - mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); + mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); + fs_pol_rising = false; break; - case SND_SOC_DAIFMT_NB_NF: mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); - mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); - mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); - mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); + fs_pol_rising = true; break; - default: ret = -EINVAL; - break; + goto out; + } + + if (inv_fs) + fs_pol_rising = !fs_pol_rising; + + if (fs_pol_rising) { + mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); + mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); + } else { + mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); + mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); } out: pm_runtime_put_sync(mcasp->dev); @@ -410,6 +445,8 @@ static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AHCLKX); } + mcasp->sysclk_freq = freq; + return 0; } @@ -454,17 +491,19 @@ static int davinci_config_channel_size(struct davinci_mcasp *mcasp, } static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, - int channels) + int period_words, int channels) { + struct davinci_pcm_dma_params *dma_params = &mcasp->dma_params[stream]; + struct snd_dmaengine_dai_dma_data *dma_data = &mcasp->dma_data[stream]; int i; u8 tx_ser = 0; u8 rx_ser = 0; - u8 ser; u8 slots = mcasp->tdm_slots; u8 max_active_serializers = (channels + slots - 1) / slots; + int active_serializers, numevt, n; u32 reg; /* Default configuration */ - if (mcasp->version != MCASP_VERSION_4) + if (mcasp->version < MCASP_VERSION_3) mcasp_set_bits(mcasp, DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT); /* All PINS as McASP */ @@ -495,37 +534,71 @@ static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, } } - if (stream == SNDRV_PCM_STREAM_PLAYBACK) - ser = tx_ser; - else - ser = rx_ser; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + active_serializers = tx_ser; + numevt = mcasp->txnumevt; + reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; + } else { + active_serializers = rx_ser; + numevt = mcasp->rxnumevt; + reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; + } - if (ser < max_active_serializers) { + if (active_serializers < max_active_serializers) { dev_warn(mcasp->dev, "stream has more channels (%d) than are " - "enabled in mcasp (%d)\n", channels, ser * slots); + "enabled in mcasp (%d)\n", channels, + active_serializers * slots); return -EINVAL; } - if (mcasp->txnumevt && stream == SNDRV_PCM_STREAM_PLAYBACK) { - if (mcasp->txnumevt * tx_ser > 64) - mcasp->txnumevt = 1; - - reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; - mcasp_mod_bits(mcasp, reg, tx_ser, NUMDMA_MASK); - mcasp_mod_bits(mcasp, reg, ((mcasp->txnumevt * tx_ser) << 8), - NUMEVT_MASK); + /* AFIFO is not in use */ + if (!numevt) { + /* Configure the burst size for platform drivers */ + if (active_serializers > 1) { + /* + * If more than one serializers are in use we have one + * DMA request to provide data for all serializers. + * For example if three serializers are enabled the DMA + * need to transfer three words per DMA request. + */ + dma_params->fifo_level = active_serializers; + dma_data->maxburst = active_serializers; + } else { + dma_params->fifo_level = 0; + dma_data->maxburst = 0; + } + return 0; } - if (mcasp->rxnumevt && stream == SNDRV_PCM_STREAM_CAPTURE) { - if (mcasp->rxnumevt * rx_ser > 64) - mcasp->rxnumevt = 1; - - reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; - mcasp_mod_bits(mcasp, reg, rx_ser, NUMDMA_MASK); - mcasp_mod_bits(mcasp, reg, ((mcasp->rxnumevt * rx_ser) << 8), - NUMEVT_MASK); + if (period_words % active_serializers) { + dev_err(mcasp->dev, "Invalid combination of period words and " + "active serializers: %d, %d\n", period_words, + active_serializers); + return -EINVAL; } + /* + * Calculate the optimal AFIFO depth for platform side: + * The number of words for numevt need to be in steps of active + * serializers. + */ + n = numevt % active_serializers; + if (n) + numevt += (active_serializers - n); + while (period_words % numevt && numevt > 0) + numevt -= active_serializers; + if (numevt <= 0) + numevt = active_serializers; + + mcasp_mod_bits(mcasp, reg, active_serializers, NUMDMA_MASK); + mcasp_mod_bits(mcasp, reg, NUMEVT(numevt), NUMEVT_MASK); + + /* Configure the burst size for platform drivers */ + if (numevt == 1) + numevt = 0; + dma_params->fifo_level = numevt; + dma_data->maxburst = numevt; + return 0; } @@ -597,26 +670,26 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); struct davinci_pcm_dma_params *dma_params = &mcasp->dma_params[substream->stream]; - struct snd_dmaengine_dai_dma_data *dma_data = - &mcasp->dma_data[substream->stream]; int word_length; - u8 fifo_level; - u8 slots = mcasp->tdm_slots; - u8 active_serializers; - int channels; + int channels = params_channels(params); + int period_size = params_period_size(params); int ret; - struct snd_interval *pcm_channels = hw_param_interval(params, - SNDRV_PCM_HW_PARAM_CHANNELS); - channels = pcm_channels->min; - active_serializers = (channels + slots - 1) / slots; + /* If mcasp is BCLK master we need to set BCLK divider */ + if (mcasp->bclk_master) { + unsigned int bclk_freq = snd_soc_params_to_bclk(params); + if (mcasp->sysclk_freq % bclk_freq != 0) { + dev_err(mcasp->dev, "Can't produce required BCLK\n"); + return -EINVAL; + } + davinci_mcasp_set_clkdiv( + cpu_dai, 1, mcasp->sysclk_freq / bclk_freq); + } - if (mcasp_common_hw_param(mcasp, substream->stream, channels) == -EINVAL) - return -EINVAL; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - fifo_level = mcasp->txnumevt * active_serializers; - else - fifo_level = mcasp->rxnumevt * active_serializers; + ret = mcasp_common_hw_param(mcasp, substream->stream, + period_size * channels, channels); + if (ret) + return ret; if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) ret = mcasp_dit_hw_param(mcasp); @@ -658,14 +731,11 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - if (mcasp->version == MCASP_VERSION_2 && !fifo_level) + if (mcasp->version == MCASP_VERSION_2 && !dma_params->fifo_level) dma_params->acnt = 4; else dma_params->acnt = dma_params->data_type; - dma_params->fifo_level = fifo_level; - dma_data->maxburst = fifo_level; - davinci_config_channel_size(mcasp, word_length); return 0; @@ -696,22 +766,7 @@ static int davinci_mcasp_trigger(struct snd_pcm_substream *substream, return ret; } -static int davinci_mcasp_startup(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); - - if (mcasp->version == MCASP_VERSION_4) - snd_soc_dai_set_dma_data(dai, substream, - &mcasp->dma_data[substream->stream]); - else - snd_soc_dai_set_dma_data(dai, substream, mcasp->dma_params); - - return 0; -} - static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { - .startup = davinci_mcasp_startup, .trigger = davinci_mcasp_trigger, .hw_params = davinci_mcasp_hw_params, .set_fmt = davinci_mcasp_set_dai_fmt, @@ -719,6 +774,62 @@ static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { .set_sysclk = davinci_mcasp_set_sysclk, }; +static int davinci_mcasp_dai_probe(struct snd_soc_dai *dai) +{ + struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); + + if (mcasp->version == MCASP_VERSION_4) { + /* Using dmaengine PCM */ + dai->playback_dma_data = + &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; + dai->capture_dma_data = + &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; + } else { + /* Using davinci-pcm */ + dai->playback_dma_data = mcasp->dma_params; + dai->capture_dma_data = mcasp->dma_params; + } + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int davinci_mcasp_suspend(struct snd_soc_dai *dai) +{ + struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); + struct davinci_mcasp_context *context = &mcasp->context; + + context->txfmtctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG); + context->rxfmtctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG); + context->txfmt = mcasp_get_reg(mcasp, DAVINCI_MCASP_TXFMT_REG); + context->rxfmt = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMT_REG); + context->aclkxctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG); + context->aclkrctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKRCTL_REG); + context->pdir = mcasp_get_reg(mcasp, DAVINCI_MCASP_PDIR_REG); + + return 0; +} + +static int davinci_mcasp_resume(struct snd_soc_dai *dai) +{ + struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); + struct davinci_mcasp_context *context = &mcasp->context; + + mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG, context->txfmtctl); + mcasp_set_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG, context->rxfmtctl); + mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMT_REG, context->txfmt); + mcasp_set_reg(mcasp, DAVINCI_MCASP_RXFMT_REG, context->rxfmt); + mcasp_set_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, context->aclkxctl); + mcasp_set_reg(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, context->aclkrctl); + mcasp_set_reg(mcasp, DAVINCI_MCASP_PDIR_REG, context->pdir); + + return 0; +} +#else +#define davinci_mcasp_suspend NULL +#define davinci_mcasp_resume NULL +#endif + #define DAVINCI_MCASP_RATES SNDRV_PCM_RATE_8000_192000 #define DAVINCI_MCASP_PCM_FMTS (SNDRV_PCM_FMTBIT_S8 | \ @@ -735,6 +846,9 @@ static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { static struct snd_soc_dai_driver davinci_mcasp_dai[] = { { .name = "davinci-mcasp.0", + .probe = davinci_mcasp_dai_probe, + .suspend = davinci_mcasp_suspend, + .resume = davinci_mcasp_resume, .playback = { .channels_min = 2, .channels_max = 32 * 16, @@ -752,6 +866,7 @@ static struct snd_soc_dai_driver davinci_mcasp_dai[] = { }, { .name = "davinci-mcasp.1", + .probe = davinci_mcasp_dai_probe, .playback = { .channels_min = 1, .channels_max = 384, @@ -768,28 +883,28 @@ static const struct snd_soc_component_driver davinci_mcasp_component = { }; /* Some HW specific values and defaults. The rest is filled in from DT. */ -static struct snd_platform_data dm646x_mcasp_pdata = { +static struct davinci_mcasp_pdata dm646x_mcasp_pdata = { .tx_dma_offset = 0x400, .rx_dma_offset = 0x400, .asp_chan_q = EVENTQ_0, .version = MCASP_VERSION_1, }; -static struct snd_platform_data da830_mcasp_pdata = { +static struct davinci_mcasp_pdata da830_mcasp_pdata = { .tx_dma_offset = 0x2000, .rx_dma_offset = 0x2000, .asp_chan_q = EVENTQ_0, .version = MCASP_VERSION_2, }; -static struct snd_platform_data am33xx_mcasp_pdata = { +static struct davinci_mcasp_pdata am33xx_mcasp_pdata = { .tx_dma_offset = 0, .rx_dma_offset = 0, .asp_chan_q = EVENTQ_0, .version = MCASP_VERSION_3, }; -static struct snd_platform_data dra7_mcasp_pdata = { +static struct davinci_mcasp_pdata dra7_mcasp_pdata = { .tx_dma_offset = 0x200, .rx_dma_offset = 0x284, .asp_chan_q = EVENTQ_0, @@ -857,11 +972,11 @@ err1: return ret; } -static struct snd_platform_data *davinci_mcasp_set_pdata_from_of( +static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of( struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - struct snd_platform_data *pdata = NULL; + struct davinci_mcasp_pdata *pdata = NULL; const struct of_device_id *match = of_match_device(mcasp_dt_ids, &pdev->dev); struct of_phandle_args dma_spec; @@ -874,7 +989,7 @@ static struct snd_platform_data *davinci_mcasp_set_pdata_from_of( pdata = pdev->dev.platform_data; return pdata; } else if (match) { - pdata = (struct snd_platform_data *) match->data; + pdata = (struct davinci_mcasp_pdata*) match->data; } else { /* control shouldn't reach here. something is wrong */ ret = -EINVAL; @@ -966,9 +1081,10 @@ nodata: static int davinci_mcasp_probe(struct platform_device *pdev) { - struct davinci_pcm_dma_params *dma_data; + struct davinci_pcm_dma_params *dma_params; + struct snd_dmaengine_dai_dma_data *dma_data; struct resource *mem, *ioarea, *res, *dat; - struct snd_platform_data *pdata; + struct davinci_mcasp_pdata *pdata; struct davinci_mcasp *mcasp; int ret; @@ -1018,7 +1134,7 @@ static int davinci_mcasp_probe(struct platform_device *pdev) if (!mcasp->base) { dev_err(&pdev->dev, "ioremap failed\n"); ret = -ENOMEM; - goto err_release_clk; + goto err; } mcasp->op_mode = pdata->op_mode; @@ -1035,41 +1151,49 @@ static int davinci_mcasp_probe(struct platform_device *pdev) if (dat) mcasp->dat_port = true; - dma_data = &mcasp->dma_params[SNDRV_PCM_STREAM_PLAYBACK]; - dma_data->asp_chan_q = pdata->asp_chan_q; - dma_data->ram_chan_q = pdata->ram_chan_q; - dma_data->sram_pool = pdata->sram_pool; - dma_data->sram_size = pdata->sram_size_playback; + dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_PLAYBACK]; + dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; + dma_params->asp_chan_q = pdata->asp_chan_q; + dma_params->ram_chan_q = pdata->ram_chan_q; + dma_params->sram_pool = pdata->sram_pool; + dma_params->sram_size = pdata->sram_size_playback; if (dat) - dma_data->dma_addr = dat->start; + dma_params->dma_addr = dat->start; else - dma_data->dma_addr = mem->start + pdata->tx_dma_offset; + dma_params->dma_addr = mem->start + pdata->tx_dma_offset; /* Unconditional dmaengine stuff */ - mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr = dma_data->dma_addr; + dma_data->addr = dma_params->dma_addr; res = platform_get_resource(pdev, IORESOURCE_DMA, 0); if (res) - dma_data->channel = res->start; + dma_params->channel = res->start; else - dma_data->channel = pdata->tx_dma_channel; + dma_params->channel = pdata->tx_dma_channel; - dma_data = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE]; - dma_data->asp_chan_q = pdata->asp_chan_q; - dma_data->ram_chan_q = pdata->ram_chan_q; - dma_data->sram_pool = pdata->sram_pool; - dma_data->sram_size = pdata->sram_size_capture; + /* dmaengine filter data for DT and non-DT boot */ + if (pdev->dev.of_node) + dma_data->filter_data = "tx"; + else + dma_data->filter_data = &dma_params->channel; + + dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE]; + dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; + dma_params->asp_chan_q = pdata->asp_chan_q; + dma_params->ram_chan_q = pdata->ram_chan_q; + dma_params->sram_pool = pdata->sram_pool; + dma_params->sram_size = pdata->sram_size_capture; if (dat) - dma_data->dma_addr = dat->start; + dma_params->dma_addr = dat->start; else - dma_data->dma_addr = mem->start + pdata->rx_dma_offset; + dma_params->dma_addr = mem->start + pdata->rx_dma_offset; /* Unconditional dmaengine stuff */ - mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr = dma_data->dma_addr; + dma_data->addr = dma_params->dma_addr; if (mcasp->version < MCASP_VERSION_3) { mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE; - /* dma_data->dma_addr is pointing to the data port address */ + /* dma_params->dma_addr is pointing to the data port address */ mcasp->dat_port = true; } else { mcasp->fifo_base = DAVINCI_MCASP_V3_AFIFO_BASE; @@ -1077,37 +1201,51 @@ static int davinci_mcasp_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_DMA, 1); if (res) - dma_data->channel = res->start; + dma_params->channel = res->start; else - dma_data->channel = pdata->rx_dma_channel; + dma_params->channel = pdata->rx_dma_channel; - /* Unconditional dmaengine stuff */ - mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data = "tx"; - mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE].filter_data = "rx"; + /* dmaengine filter data for DT and non-DT boot */ + if (pdev->dev.of_node) + dma_data->filter_data = "rx"; + else + dma_data->filter_data = &dma_params->channel; dev_set_drvdata(&pdev->dev, mcasp); mcasp_reparent_fck(pdev); - ret = snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, - &davinci_mcasp_dai[pdata->op_mode], 1); + ret = devm_snd_soc_register_component(&pdev->dev, + &davinci_mcasp_component, + &davinci_mcasp_dai[pdata->op_mode], 1); if (ret != 0) - goto err_release_clk; + goto err; - if (mcasp->version != MCASP_VERSION_4) { + switch (mcasp->version) { + case MCASP_VERSION_1: + case MCASP_VERSION_2: + case MCASP_VERSION_3: ret = davinci_soc_platform_register(&pdev->dev); - if (ret) { - dev_err(&pdev->dev, "register PCM failed: %d\n", ret); - goto err_unregister_component; - } + break; + case MCASP_VERSION_4: + ret = omap_pcm_platform_register(&pdev->dev); + break; + default: + dev_err(&pdev->dev, "Invalid McASP version: %d\n", + mcasp->version); + ret = -EINVAL; + break; + } + + if (ret) { + dev_err(&pdev->dev, "register PCM failed: %d\n", ret); + goto err; } return 0; -err_unregister_component: - snd_soc_unregister_component(&pdev->dev); -err_release_clk: +err: pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; @@ -1115,61 +1253,18 @@ err_release_clk: static int davinci_mcasp_remove(struct platform_device *pdev) { - struct davinci_mcasp *mcasp = dev_get_drvdata(&pdev->dev); - - snd_soc_unregister_component(&pdev->dev); - if (mcasp->version != MCASP_VERSION_4) - davinci_soc_platform_unregister(&pdev->dev); - pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; } -#ifdef CONFIG_PM_SLEEP -static int davinci_mcasp_suspend(struct device *dev) -{ - struct davinci_mcasp *mcasp = dev_get_drvdata(dev); - - mcasp->context.txfmtctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG); - mcasp->context.rxfmtctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG); - mcasp->context.txfmt = mcasp_get_reg(mcasp, DAVINCI_MCASP_TXFMT_REG); - mcasp->context.rxfmt = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMT_REG); - mcasp->context.aclkxctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG); - mcasp->context.aclkrctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKRCTL_REG); - mcasp->context.pdir = mcasp_get_reg(mcasp, DAVINCI_MCASP_PDIR_REG); - - return 0; -} - -static int davinci_mcasp_resume(struct device *dev) -{ - struct davinci_mcasp *mcasp = dev_get_drvdata(dev); - - mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG, mcasp->context.txfmtctl); - mcasp_set_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG, mcasp->context.rxfmtctl); - mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMT_REG, mcasp->context.txfmt); - mcasp_set_reg(mcasp, DAVINCI_MCASP_RXFMT_REG, mcasp->context.rxfmt); - mcasp_set_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, mcasp->context.aclkxctl); - mcasp_set_reg(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, mcasp->context.aclkrctl); - mcasp_set_reg(mcasp, DAVINCI_MCASP_PDIR_REG, mcasp->context.pdir); - - return 0; -} -#endif - -SIMPLE_DEV_PM_OPS(davinci_mcasp_pm_ops, - davinci_mcasp_suspend, - davinci_mcasp_resume); - static struct platform_driver davinci_mcasp_driver = { .probe = davinci_mcasp_probe, .remove = davinci_mcasp_remove, .driver = { .name = "davinci-mcasp", .owner = THIS_MODULE, - .pm = &davinci_mcasp_pm_ops, .of_match_table = mcasp_dt_ids, }, }; diff --git a/sound/soc/davinci/davinci-mcasp.h b/sound/soc/davinci/davinci-mcasp.h index 8fed757d608..98fbc451892 100644 --- a/sound/soc/davinci/davinci-mcasp.h +++ b/sound/soc/davinci/davinci-mcasp.h @@ -283,6 +283,7 @@ */ #define FIFO_ENABLE BIT(16) #define NUMEVT_MASK (0xFF << 8) +#define NUMEVT(x) (((x) & 0xFF) << 8) #define NUMDMA_MASK (0xFF) #endif /* DAVINCI_MCASP_H */ diff --git a/sound/soc/davinci/davinci-pcm.c b/sound/soc/davinci/davinci-pcm.c index 14145cdf8a1..7809e9d935f 100644 --- a/sound/soc/davinci/davinci-pcm.c +++ b/sound/soc/davinci/davinci-pcm.c @@ -852,16 +852,10 @@ static struct snd_soc_platform_driver davinci_soc_platform = { int davinci_soc_platform_register(struct device *dev) { - return snd_soc_register_platform(dev, &davinci_soc_platform); + return devm_snd_soc_register_platform(dev, &davinci_soc_platform); } EXPORT_SYMBOL_GPL(davinci_soc_platform_register); -void davinci_soc_platform_unregister(struct device *dev) -{ - snd_soc_unregister_platform(dev); -} -EXPORT_SYMBOL_GPL(davinci_soc_platform_unregister); - MODULE_AUTHOR("Vladimir Barinov"); MODULE_DESCRIPTION("TI DAVINCI PCM DMA module"); MODULE_LICENSE("GPL"); diff --git a/sound/soc/davinci/davinci-pcm.h b/sound/soc/davinci/davinci-pcm.h index fbb710c76c0..0fe2346a9aa 100644 --- a/sound/soc/davinci/davinci-pcm.h +++ b/sound/soc/davinci/davinci-pcm.h @@ -29,7 +29,13 @@ struct davinci_pcm_dma_params { unsigned int fifo_level; }; +#if IS_ENABLED(CONFIG_SND_DAVINCI_SOC) int davinci_soc_platform_register(struct device *dev); -void davinci_soc_platform_unregister(struct device *dev); +#else +static inline int davinci_soc_platform_register(struct device *dev) +{ + return 0; +} +#endif /* CONFIG_SND_DAVINCI_SOC */ #endif diff --git a/sound/soc/davinci/davinci-vcif.c b/sound/soc/davinci/davinci-vcif.c index 30587c0cdbd..77aef05588c 100644 --- a/sound/soc/davinci/davinci-vcif.c +++ b/sound/soc/davinci/davinci-vcif.c @@ -258,7 +258,6 @@ static int davinci_vcif_probe(struct platform_device *pdev) static int davinci_vcif_remove(struct platform_device *pdev) { snd_soc_unregister_component(&pdev->dev); - davinci_soc_platform_unregister(&pdev->dev); return 0; } diff --git a/sound/soc/davinci/edma-pcm.c b/sound/soc/davinci/edma-pcm.c new file mode 100644 index 00000000000..d38afb1c61a --- /dev/null +++ b/sound/soc/davinci/edma-pcm.c @@ -0,0 +1,57 @@ +/* + * edma-pcm.c - eDMA PCM driver using dmaengine for AM3xxx, AM4xxx + * + * Copyright (C) 2014 Texas Instruments, Inc. + * + * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> + * + * Based on: sound/soc/tegra/tegra_pcm.c + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#include <linux/module.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/dmaengine_pcm.h> +#include <linux/edma.h> + +static const struct snd_pcm_hardware edma_pcm_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_INTERLEAVED, + .buffer_bytes_max = 128 * 1024, + .period_bytes_min = 32, + .period_bytes_max = 64 * 1024, + .periods_min = 2, + .periods_max = 19, /* Limit by edma dmaengine driver */ +}; + +static const struct snd_dmaengine_pcm_config edma_dmaengine_pcm_config = { + .pcm_hardware = &edma_pcm_hardware, + .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, + .compat_filter_fn = edma_filter_fn, + .prealloc_buffer_size = 128 * 1024, +}; + +int edma_pcm_platform_register(struct device *dev) +{ + return devm_snd_dmaengine_pcm_register(dev, &edma_dmaengine_pcm_config, + SND_DMAENGINE_PCM_FLAG_COMPAT); +} +EXPORT_SYMBOL_GPL(edma_pcm_platform_register); + +MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); +MODULE_DESCRIPTION("eDMA PCM ASoC platform driver"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/davinci/edma-pcm.h b/sound/soc/davinci/edma-pcm.h new file mode 100644 index 00000000000..894c378c0f7 --- /dev/null +++ b/sound/soc/davinci/edma-pcm.h @@ -0,0 +1,25 @@ +/* + * edma-pcm.h - eDMA PCM driver using dmaengine for AM3xxx, AM4xxx + * + * Copyright (C) 2014 Texas Instruments, Inc. + * + * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> + * + * Based on: sound/soc/tegra/tegra_pcm.h + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#ifndef __EDMA_PCM_H__ +#define __EDMA_PCM_H__ + +int edma_pcm_platform_register(struct device *dev); + +#endif /* __EDMA_PCM_H__ */ |