From b93cc9f19bade9e9ddd41958352168dc0d266f48 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Mon, 26 Jul 2010 09:59:15 +0300 Subject: ASoC: TWL4030: Capture route DAPM event fix There is no need to handle POST_PMU, POST_PMD event with the Capture Route widget. It is enough to handle POST_REG event, since that will come when the user changes the routing, and we will switch the needed bits in the registers. Signed-off-by: Peter Ujfalusi Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/codecs/twl4030.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index bd557c2..d401c59 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -1432,11 +1432,9 @@ static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = { TX2 Left/Right: either analog Left/Right or Digimic1 */ SND_SOC_DAPM_MUX_E("TX1 Capture Route", SND_SOC_NOPM, 0, 0, &twl4030_dapm_micpathtx1_control, micpath_event, - SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD| SND_SOC_DAPM_POST_REG), SND_SOC_DAPM_MUX_E("TX2 Capture Route", SND_SOC_NOPM, 0, 0, &twl4030_dapm_micpathtx2_control, micpath_event, - SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD| SND_SOC_DAPM_POST_REG), /* Analog input mixers for the capture amplifiers */ -- cgit v1.1 From f430a27f05d42d26d3e438aa262a92565170573f Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 28 Jul 2010 15:26:54 +0300 Subject: ASoC: tlv320dac33: Revisit the FIFO Mode1 handling Replace the hardwired latency definition with platform data parameter, and simplify the nSample parameter calculation. Signed-off-by: Peter Ujfalusi Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/codecs/tlv320dac33.c | 71 ++++++++++++++++++++---------------------- 1 file changed, 34 insertions(+), 37 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index 2fa946c..ced6fbb 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -49,8 +49,6 @@ #define NSAMPLE_MAX 5700 -#define LATENCY_TIME_MS 20 - #define MODE7_LTHR 10 #define MODE7_UTHR (DAC33_BUFFER_SIZE_SAMPLES - 10) @@ -107,6 +105,8 @@ struct tlv320dac33_priv { * this */ enum dac33_fifo_modes fifo_mode;/* FIFO mode selection */ unsigned int nsample; /* burst read amount from host */ + int mode1_latency; /* latency caused by the i2c writes in + * us */ u8 burst_bclkdiv; /* BCLK divider value in burst mode */ unsigned int burst_rate; /* Interface speed in Burst modes */ @@ -649,7 +649,7 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) switch (dac33->fifo_mode) { case DAC33_FIFO_MODE1: dac33_write16(codec, DAC33_NSAMPLE_MSB, - DAC33_THRREG(dac33->nsample + dac33->alarm_threshold)); + DAC33_THRREG(dac33->nsample)); /* Take the timestamps */ spin_lock_irq(&dac33->lock); @@ -798,6 +798,10 @@ static void dac33_shutdown(struct snd_pcm_substream *substream, struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); dac33->substream = NULL; + + /* Reset the nSample restrictions */ + dac33->nsample_min = 0; + dac33->nsample_max = NSAMPLE_MAX; } static int dac33_hw_params(struct snd_pcm_substream *substream, @@ -1040,48 +1044,38 @@ static void dac33_calculate_times(struct snd_pcm_substream *substream) struct snd_soc_device *socdev = rtd->socdev; struct snd_soc_codec *codec = socdev->card->codec; struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + unsigned int period_size = substream->runtime->period_size; + unsigned int rate = substream->runtime->rate; unsigned int nsample_limit; /* In bypass mode we don't need to calculate */ if (!dac33->fifo_mode) return; - /* Number of samples (16bit, stereo) in one period */ - dac33->nsample_min = snd_pcm_lib_period_bytes(substream) / 4; - - /* Number of samples (16bit, stereo) in ALSA buffer */ - dac33->nsample_max = snd_pcm_lib_buffer_bytes(substream) / 4; - /* Subtract one period from the total */ - dac33->nsample_max -= dac33->nsample_min; - - /* Number of samples for LATENCY_TIME_MS / 2 */ - dac33->alarm_threshold = substream->runtime->rate / - (1000 / (LATENCY_TIME_MS / 2)); - - /* Find and fix up the lowest nsmaple limit */ - nsample_limit = substream->runtime->rate / (1000 / LATENCY_TIME_MS); - - if (dac33->nsample_min < nsample_limit) - dac33->nsample_min = nsample_limit; - - if (dac33->nsample < dac33->nsample_min) - dac33->nsample = dac33->nsample_min; - - /* - * Find and fix up the highest nsmaple limit - * In order to not overflow the DAC33 buffer substract the - * alarm_threshold value from the size of the DAC33 buffer - */ - nsample_limit = DAC33_BUFFER_SIZE_SAMPLES - dac33->alarm_threshold; - - if (dac33->nsample_max > nsample_limit) - dac33->nsample_max = nsample_limit; - - if (dac33->nsample > dac33->nsample_max) - dac33->nsample = dac33->nsample_max; - switch (dac33->fifo_mode) { case DAC33_FIFO_MODE1: + /* Number of samples under i2c latency */ + dac33->alarm_threshold = US_TO_SAMPLES(rate, + dac33->mode1_latency); + /* nSample time shall not be shorter than i2c latency */ + dac33->nsample_min = dac33->alarm_threshold; + /* + * nSample should not be bigger than alsa buffer minus + * size of one period to avoid overruns + */ + dac33->nsample_max = substream->runtime->buffer_size - + period_size; + nsample_limit = DAC33_BUFFER_SIZE_SAMPLES - + dac33->alarm_threshold; + if (dac33->nsample_max > nsample_limit) + dac33->nsample_max = nsample_limit; + + /* Correct the nSample if it is outside of the ranges */ + if (dac33->nsample < dac33->nsample_min) + dac33->nsample = dac33->nsample_min; + if (dac33->nsample > dac33->nsample_max) + dac33->nsample = dac33->nsample_max; + dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate, dac33->nsample); dac33->t_stamp1 = 0; @@ -1519,6 +1513,9 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client, /* Pre calculate the burst rate */ dac33->burst_rate = BURST_BASEFREQ_HZ / dac33->burst_bclkdiv / 32; dac33->keep_bclk = pdata->keep_bclk; + dac33->mode1_latency = pdata->mode1_latency; + if (!dac33->mode1_latency) + dac33->mode1_latency = 10000; /* 10ms */ dac33->irq = client->irq; dac33->nsample = NSAMPLE_MAX; dac33->nsample_max = NSAMPLE_MAX; -- cgit v1.1 From a577b318fc7cb0c46f9f0cdefb5b267490ff8ce5 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 28 Jul 2010 15:26:55 +0300 Subject: ASoC: tlv320dac33: Add support for automatic FIFO configuration Platform parameter to enable automatic FIFO configuration when the codec is in Mode1 or Mode7 FIFO mode. When this mode is selected, the controls for changing nSample (in Mode1), and UTHR (in Mode7) are not added. The driver configures the FIFO configuration based on the stream's period size in a way, that every burst will read period size of data from the host. In Mode7 we need to use a formula, which gives close enough aproximation for the burst length from the host point of view. Signed-off-by: Peter Ujfalusi Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/codecs/tlv320dac33.c | 90 ++++++++++++++++++++++++++++++------------ 1 file changed, 64 insertions(+), 26 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index ced6fbb..8651b01 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -60,6 +60,9 @@ #define US_TO_SAMPLES(rate, us) \ (rate / (1000000 / us)) +#define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \ + ((samples * 5000) / ((burstrate * 5000) / (burstrate - playrate))) + static void dac33_calculate_times(struct snd_pcm_substream *substream); static int dac33_prepare_chip(struct snd_pcm_substream *substream); @@ -107,6 +110,8 @@ struct tlv320dac33_priv { unsigned int nsample; /* burst read amount from host */ int mode1_latency; /* latency caused by the i2c writes in * us */ + int auto_fifo_config; /* Configure the FIFO based on the + * period size */ u8 burst_bclkdiv; /* BCLK divider value in burst mode */ unsigned int burst_rate; /* Interface speed in Burst modes */ @@ -538,13 +543,16 @@ static const struct snd_kcontrol_new dac33_snd_controls[] = { DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1), }; -static const struct snd_kcontrol_new dac33_nsample_snd_controls[] = { +static const struct snd_kcontrol_new dac33_mode_snd_controls[] = { + SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum, + dac33_get_fifo_mode, dac33_set_fifo_mode), +}; + +static const struct snd_kcontrol_new dac33_fifo_snd_controls[] = { SOC_SINGLE_EXT("nSample", 0, 0, 5900, 0, - dac33_get_nsample, dac33_set_nsample), + dac33_get_nsample, dac33_set_nsample), SOC_SINGLE_EXT("UTHR", 0, 0, MODE7_UTHR, 0, dac33_get_uthr, dac33_set_uthr), - SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum, - dac33_get_fifo_mode, dac33_set_fifo_mode), }; /* Analog bypass */ @@ -1057,24 +1065,38 @@ static void dac33_calculate_times(struct snd_pcm_substream *substream) /* Number of samples under i2c latency */ dac33->alarm_threshold = US_TO_SAMPLES(rate, dac33->mode1_latency); - /* nSample time shall not be shorter than i2c latency */ - dac33->nsample_min = dac33->alarm_threshold; - /* - * nSample should not be bigger than alsa buffer minus - * size of one period to avoid overruns - */ - dac33->nsample_max = substream->runtime->buffer_size - - period_size; - nsample_limit = DAC33_BUFFER_SIZE_SAMPLES - - dac33->alarm_threshold; - if (dac33->nsample_max > nsample_limit) - dac33->nsample_max = nsample_limit; - - /* Correct the nSample if it is outside of the ranges */ - if (dac33->nsample < dac33->nsample_min) - dac33->nsample = dac33->nsample_min; - if (dac33->nsample > dac33->nsample_max) - dac33->nsample = dac33->nsample_max; + if (dac33->auto_fifo_config) { + if (period_size <= dac33->alarm_threshold) + /* + * Configure nSamaple to number of periods, + * which covers the latency requironment. + */ + dac33->nsample = period_size * + ((dac33->alarm_threshold / period_size) + + (dac33->alarm_threshold % period_size ? + 1 : 0)); + else + dac33->nsample = period_size; + } else { + /* nSample time shall not be shorter than i2c latency */ + dac33->nsample_min = dac33->alarm_threshold; + /* + * nSample should not be bigger than alsa buffer minus + * size of one period to avoid overruns + */ + dac33->nsample_max = substream->runtime->buffer_size - + period_size; + nsample_limit = DAC33_BUFFER_SIZE_SAMPLES - + dac33->alarm_threshold; + if (dac33->nsample_max > nsample_limit) + dac33->nsample_max = nsample_limit; + + /* Correct the nSample if it is outside of the ranges */ + if (dac33->nsample < dac33->nsample_min) + dac33->nsample = dac33->nsample_min; + if (dac33->nsample > dac33->nsample_max) + dac33->nsample = dac33->nsample_max; + } dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate, dac33->nsample); @@ -1082,6 +1104,16 @@ static void dac33_calculate_times(struct snd_pcm_substream *substream) dac33->t_stamp2 = 0; break; case DAC33_FIFO_MODE7: + if (dac33->auto_fifo_config) { + dac33->uthr = UTHR_FROM_PERIOD_SIZE( + period_size, + rate, + dac33->burst_rate) + 9; + if (dac33->uthr > MODE7_UTHR) + dac33->uthr = MODE7_UTHR; + if (dac33->uthr < (MODE7_LTHR + 10)) + dac33->uthr = (MODE7_LTHR + 10); + } dac33->mode7_us_to_lthr = SAMPLES_TO_US(substream->runtime->rate, dac33->uthr - MODE7_LTHR + 1); @@ -1379,10 +1411,15 @@ static int dac33_soc_probe(struct platform_device *pdev) snd_soc_add_controls(codec, dac33_snd_controls, ARRAY_SIZE(dac33_snd_controls)); - /* Only add the nSample controls, if we have valid IRQ number */ - if (dac33->irq >= 0) - snd_soc_add_controls(codec, dac33_nsample_snd_controls, - ARRAY_SIZE(dac33_nsample_snd_controls)); + /* Only add the FIFO controls, if we have valid IRQ number */ + if (dac33->irq >= 0) { + snd_soc_add_controls(codec, dac33_mode_snd_controls, + ARRAY_SIZE(dac33_mode_snd_controls)); + /* FIFO usage controls only, if autoio config is not selected */ + if (!dac33->auto_fifo_config) + snd_soc_add_controls(codec, dac33_fifo_snd_controls, + ARRAY_SIZE(dac33_fifo_snd_controls)); + } dac33_add_widgets(codec); @@ -1513,6 +1550,7 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client, /* Pre calculate the burst rate */ dac33->burst_rate = BURST_BASEFREQ_HZ / dac33->burst_bclkdiv / 32; dac33->keep_bclk = pdata->keep_bclk; + dac33->auto_fifo_config = pdata->auto_fifo_config; dac33->mode1_latency = pdata->mode1_latency; if (!dac33->mode1_latency) dac33->mode1_latency = 10000; /* 10ms */ -- cgit v1.1 From 81ec027e64f459f06ff20d8871f2867cff4a5e85 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 29 Jul 2010 09:51:26 +0300 Subject: ASoC: omap-mcbsp: Restructure the code within omap_mcbsp_dai_hw_params In preparation for the extended threshold mode (sDMA packet mode support), the code need to be restructured. Signed-off-by: Peter Ujfalusi Acked-by: Jarkko Nikula Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/omap/omap-mcbsp.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index aebd3af..88ca71c 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -348,11 +348,13 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; - int dma, bus_id = mcbsp_data->bus_id, id = cpu_dai->id; + struct omap_pcm_dma_data *dma_data; + int dma, bus_id = mcbsp_data->bus_id; int wlen, channels, wpf, sync_mode = OMAP_DMA_SYNC_ELEMENT; unsigned long port; unsigned int format, div, framesize, master; + dma_data = &omap_mcbsp_dai_dma_params[cpu_dai->id][substream->stream]; if (cpu_class_is_omap1()) { dma = omap1_dma_reqs[bus_id][substream->stream]; port = omap1_mcbsp_port[bus_id][substream->stream]; @@ -365,8 +367,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, } else if (cpu_is_omap343x()) { dma = omap24xx_dma_reqs[bus_id][substream->stream]; port = omap34xx_mcbsp_port[bus_id][substream->stream]; - omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold = - omap_mcbsp_set_threshold; + dma_data->set_threshold = omap_mcbsp_set_threshold; /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ if (omap_mcbsp_get_dma_op_mode(bus_id) == MCBSP_DMA_MODE_THRESHOLD) @@ -374,26 +375,22 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, } else { return -ENODEV; } - omap_mcbsp_dai_dma_params[id][substream->stream].name = - substream->stream ? "Audio Capture" : "Audio Playback"; - omap_mcbsp_dai_dma_params[id][substream->stream].dma_req = dma; - omap_mcbsp_dai_dma_params[id][substream->stream].port_addr = port; - omap_mcbsp_dai_dma_params[id][substream->stream].sync_mode = sync_mode; + dma_data->name = substream->stream ? "Audio Capture" : "Audio Playback"; + dma_data->dma_req = dma; + dma_data->port_addr = port; + dma_data->sync_mode = sync_mode; switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: - omap_mcbsp_dai_dma_params[id][substream->stream].data_type = - OMAP_DMA_DATA_TYPE_S16; + dma_data->data_type = OMAP_DMA_DATA_TYPE_S16; break; case SNDRV_PCM_FORMAT_S32_LE: - omap_mcbsp_dai_dma_params[id][substream->stream].data_type = - OMAP_DMA_DATA_TYPE_S32; + dma_data->data_type = OMAP_DMA_DATA_TYPE_S32; break; default: return -EINVAL; } - snd_soc_dai_set_dma_data(cpu_dai, substream, - &omap_mcbsp_dai_dma_params[id][substream->stream]); + snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); if (mcbsp_data->configured) { /* McBSP already configured by another stream */ -- cgit v1.1 From 15d0143007b68079aec02918d890c26ed4eaf3b9 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 29 Jul 2010 09:51:25 +0300 Subject: ASoC: omap-mcbsp: Code cleanup in omap_mcbsp_dai_hw_params To make the code a bit more readable, change the indexed references to the omap_mcbsp_dai_dma_params elements with pointer. Signed-off-by: Peter Ujfalusi Acked-by: Jarkko Nikula Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/omap/omap-mcbsp.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 88ca71c..4ac8a08 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -367,18 +367,9 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, } else if (cpu_is_omap343x()) { dma = omap24xx_dma_reqs[bus_id][substream->stream]; port = omap34xx_mcbsp_port[bus_id][substream->stream]; - dma_data->set_threshold = omap_mcbsp_set_threshold; - /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ - if (omap_mcbsp_get_dma_op_mode(bus_id) == - MCBSP_DMA_MODE_THRESHOLD) - sync_mode = OMAP_DMA_SYNC_FRAME; } else { return -ENODEV; } - dma_data->name = substream->stream ? "Audio Capture" : "Audio Playback"; - dma_data->dma_req = dma; - dma_data->port_addr = port; - dma_data->sync_mode = sync_mode; switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: dma_data->data_type = OMAP_DMA_DATA_TYPE_S16; @@ -389,6 +380,18 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, default: return -EINVAL; } + if (cpu_is_omap343x()) { + dma_data->set_threshold = omap_mcbsp_set_threshold; + /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ + if (omap_mcbsp_get_dma_op_mode(bus_id) == + MCBSP_DMA_MODE_THRESHOLD) + sync_mode = OMAP_DMA_SYNC_FRAME; + } + + dma_data->name = substream->stream ? "Audio Capture" : "Audio Playback"; + dma_data->dma_req = dma; + dma_data->port_addr = port; + dma_data->sync_mode = sync_mode; snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); -- cgit v1.1 From cf80e15860852be5ce38714979db94ec36c5e288 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 29 Jul 2010 09:51:27 +0300 Subject: ASoC: omap-mcbsp: Support for sDMA packet mode Utilize the sDMA controller's packet syncronization mode, when the McBSP FIFO is in use (by extending the THRESHOLD mode). When the sDMA is configured for packet mode, the sDMA frame size does not need to match with the McBSP threshold configuration. Uppon DMA request the sDMA will transfer packet size number of words, and still trigger interrupt on frame boundary. The patch extends the original THRESHOLD mode by doing the following: if (period_words <= max_threshold) Current THRESHOLD mode configuration Otherwise (period_words > max_threshold) McBSP threshold = sDMA packet size sDMA frame size = period size With the extended THRESHOLD mode we can remove the constraint for the maximum period size, since if the period size is bigger than the maximum allowed threshold, than the driver will switch to packet mode, and picks the best (biggest) threshold value, which can divide evenly the period size. Signed-off-by: Peter Ujfalusi Acked-by: Jarkko Nikula Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/omap/omap-mcbsp.c | 62 ++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 56 insertions(+), 6 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 4ac8a08..9fd00b0 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -155,13 +155,23 @@ static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); + struct omap_pcm_dma_data *dma_data; int dma_op_mode = omap_mcbsp_get_dma_op_mode(mcbsp_data->bus_id); int words; + dma_data = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream); + /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) - /* The FIFO size depends on the McBSP word configuration */ - words = snd_pcm_lib_period_bytes(substream) / + /* + * Configure McBSP threshold based on either: + * packet_size, when the sDMA is in packet mode, or + * based on the period size. + */ + if (dma_data->packet_size) + words = dma_data->packet_size; + else + words = snd_pcm_lib_period_bytes(substream) / (mcbsp_data->wlen / 8); else words = 1; @@ -351,6 +361,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, struct omap_pcm_dma_data *dma_data; int dma, bus_id = mcbsp_data->bus_id; int wlen, channels, wpf, sync_mode = OMAP_DMA_SYNC_ELEMENT; + int pkt_size = 0; unsigned long port; unsigned int format, div, framesize, master; @@ -373,9 +384,11 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: dma_data->data_type = OMAP_DMA_DATA_TYPE_S16; + wlen = 16; break; case SNDRV_PCM_FORMAT_S32_LE: dma_data->data_type = OMAP_DMA_DATA_TYPE_S32; + wlen = 32; break; default: return -EINVAL; @@ -384,14 +397,53 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, dma_data->set_threshold = omap_mcbsp_set_threshold; /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ if (omap_mcbsp_get_dma_op_mode(bus_id) == - MCBSP_DMA_MODE_THRESHOLD) - sync_mode = OMAP_DMA_SYNC_FRAME; + MCBSP_DMA_MODE_THRESHOLD) { + int period_words, max_thrsh; + + period_words = params_period_bytes(params) / (wlen / 8); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + max_thrsh = omap_mcbsp_get_max_tx_threshold( + mcbsp_data->bus_id); + else + max_thrsh = omap_mcbsp_get_max_rx_threshold( + mcbsp_data->bus_id); + /* + * If the period contains less or equal number of words, + * we are using the original threshold mode setup: + * McBSP threshold = sDMA frame size = period_size + * Otherwise we switch to sDMA packet mode: + * McBSP threshold = sDMA packet size + * sDMA frame size = period size + */ + if (period_words > max_thrsh) { + int divider = 0; + + /* + * Look for the biggest threshold value, which + * divides the period size evenly. + */ + divider = period_words / max_thrsh; + if (period_words % max_thrsh) + divider++; + while (period_words % divider && + divider < period_words) + divider++; + if (divider == period_words) + return -EINVAL; + + pkt_size = period_words / divider; + sync_mode = OMAP_DMA_SYNC_PACKET; + } else { + sync_mode = OMAP_DMA_SYNC_FRAME; + } + } } dma_data->name = substream->stream ? "Audio Capture" : "Audio Playback"; dma_data->dma_req = dma; dma_data->port_addr = port; dma_data->sync_mode = sync_mode; + dma_data->packet_size = pkt_size; snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); @@ -419,7 +471,6 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: /* Set word lengths */ - wlen = 16; regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_16); regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_16); regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_16); @@ -427,7 +478,6 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, break; case SNDRV_PCM_FORMAT_S32_LE: /* Set word lengths */ - wlen = 32; regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_32); regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_32); regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_32); -- cgit v1.1 From 998a8a69f3a40f9c82e83730bfdaceb63954d753 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 29 Jul 2010 09:51:28 +0300 Subject: ASoC: omap-mcbsp: Remove period size constraint in THRESHOLD mode The use of sDMA packet mode in THRESHOLD mode removes the restriction on the period size. With the extended THRESHOLD mode user space can ask for any period size it wishes, and the driver will configure the sDMA and McBSP FIFO accordingly. Replace the hw_rule for the period size with static constraint, which will make sure that the period size will be always even (to avoid prime period size, which could be possible in mono stream) Signed-off-by: Peter Ujfalusi Acked-by: Jarkko Nikula Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/omap/omap-mcbsp.c | 43 ++++--------------------------------------- 1 file changed, 4 insertions(+), 39 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 9fd00b0..86f21390 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -202,31 +202,6 @@ static int omap_mcbsp_hwrule_min_buffersize(struct snd_pcm_hw_params *params, return snd_interval_refine(buffer_size, &frames); } -static int omap_mcbsp_hwrule_max_periodsize(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_interval *period_size = hw_param_interval(params, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE); - struct snd_interval *channels = hw_param_interval(params, - SNDRV_PCM_HW_PARAM_CHANNELS); - struct snd_pcm_substream *substream = rule->private; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; - struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); - struct snd_interval frames; - int size; - - snd_interval_any(&frames); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - size = omap_mcbsp_get_max_tx_threshold(mcbsp_data->bus_id); - else - size = omap_mcbsp_get_max_rx_threshold(mcbsp_data->bus_id); - - frames.max = size / channels->min; - frames.integer = 1; - return snd_interval_refine(period_size, &frames); -} - static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -255,10 +230,8 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, * 4 channels: size is 128 / 4 = 32 frames (4 * 32 words) */ if (cpu_is_omap343x()) { - int dma_op_mode = omap_mcbsp_get_dma_op_mode(bus_id); - /* - * The first rule is for the buffer size, we should not allow + * Rule for the buffer size. We should not allow * smaller buffer than the FIFO size to avoid underruns */ snd_pcm_hw_rule_add(substream->runtime, 0, @@ -267,17 +240,9 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, mcbsp_data, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); - /* - * In case of threshold mode, the rule will ensure, that the - * period size is not bigger than the maximum allowed threshold - * value. - */ - if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) - snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - omap_mcbsp_hwrule_max_periodsize, - substream, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); + /* Make sure, that the period size is always even */ + snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2); } return err; -- cgit v1.1