ASoC: add i2s dai driver for bf6xx soc
This driver enables i2s mode support on blackfin bf6xx platform. We reuse bf5xx-i2s-pcm.c as its i2s pcm driver because it's the same for both bf5xx and bf6xx soc. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Scott Jiang
Mark Brown
parent
d2aae47f80
commit
f62ae7bda4
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@ -10,12 +10,14 @@ config SND_BF5XX_I2S
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You will also need to select the audio interfaces to support below.
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config SND_BF5XX_SOC_SSM2602
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tristate "SoC SSM2602 Audio support for BF52x ezkit"
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tristate "SoC SSM2602 Audio Codec Add-On Card support"
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depends on SND_BF5XX_I2S && (SPI_MASTER || I2C)
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select SND_BF5XX_SOC_I2S
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select SND_BF5XX_SOC_I2S if !BF60x
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select SND_BF6XX_SOC_I2S if BF60x
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select SND_SOC_SSM2602
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help
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Say Y if you want to add support for SoC audio on BF527-EZKIT.
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Say Y if you want to add support for the Analog Devices
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SSM2602 Audio Codec Add-On Card.
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config SND_SOC_BFIN_EVAL_ADAU1701
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tristate "Support for the EVAL-ADAU1701MINIZ board on Blackfin eval boards"
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@ -169,6 +171,9 @@ config SND_BF6XX_SOC_SPORT
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config SND_BF5XX_SOC_I2S
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tristate
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config SND_BF6XX_SOC_I2S
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tristate
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config SND_BF5XX_SOC_TDM
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tristate
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@ -6,6 +6,7 @@ snd-soc-bf5xx-sport-objs := bf5xx-sport.o
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snd-soc-bf6xx-sport-objs := bf6xx-sport.o
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snd-soc-bf5xx-ac97-objs := bf5xx-ac97.o
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snd-soc-bf5xx-i2s-objs := bf5xx-i2s.o
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snd-soc-bf6xx-i2s-objs := bf6xx-i2s.o
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snd-soc-bf5xx-tdm-objs := bf5xx-tdm.o
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obj-$(CONFIG_SND_BF5XX_AC97) += snd-bf5xx-ac97.o
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@ -15,6 +16,7 @@ obj-$(CONFIG_SND_BF5XX_SOC_SPORT) += snd-soc-bf5xx-sport.o
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obj-$(CONFIG_SND_BF6XX_SOC_SPORT) += snd-soc-bf6xx-sport.o
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obj-$(CONFIG_SND_BF5XX_SOC_AC97) += snd-soc-bf5xx-ac97.o
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obj-$(CONFIG_SND_BF5XX_SOC_I2S) += snd-soc-bf5xx-i2s.o
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obj-$(CONFIG_SND_BF6XX_SOC_I2S) += snd-soc-bf6xx-i2s.o
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obj-$(CONFIG_SND_BF5XX_SOC_TDM) += snd-soc-bf5xx-tdm.o
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# Blackfin Machine Support
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@ -0,0 +1,234 @@
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/*
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* bf6xx-i2s.c - Analog Devices BF6XX i2s interface driver
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*
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* Copyright (c) 2012 Analog Devices Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include "bf6xx-sport.h"
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struct sport_params param;
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static int bfin_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
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unsigned int fmt)
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{
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struct sport_device *sport = snd_soc_dai_get_drvdata(cpu_dai);
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struct device *dev = &sport->pdev->dev;
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int ret = 0;
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param.spctl &= ~(SPORT_CTL_OPMODE | SPORT_CTL_CKRE | SPORT_CTL_FSR
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| SPORT_CTL_LFS | SPORT_CTL_LAFS);
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_CKRE
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| SPORT_CTL_LFS;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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param.spctl |= SPORT_CTL_FSR;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_LFS
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| SPORT_CTL_LAFS;
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break;
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default:
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dev_err(dev, "%s: Unknown DAI format type\n", __func__);
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ret = -EINVAL;
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break;
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}
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param.spctl &= ~(SPORT_CTL_ICLK | SPORT_CTL_IFS);
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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case SND_SOC_DAIFMT_CBM_CFS:
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case SND_SOC_DAIFMT_CBS_CFM:
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ret = -EINVAL;
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break;
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default:
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dev_err(dev, "%s: Unknown DAI master type\n", __func__);
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int bfin_i2s_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
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struct device *dev = &sport->pdev->dev;
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int ret = 0;
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param.spctl &= ~SPORT_CTL_SLEN;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S8:
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param.spctl |= 0x70;
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sport->wdsize = 1;
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case SNDRV_PCM_FORMAT_S16_LE:
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param.spctl |= 0xf0;
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sport->wdsize = 2;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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param.spctl |= 0x170;
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sport->wdsize = 3;
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break;
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case SNDRV_PCM_FORMAT_S32_LE:
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param.spctl |= 0x1f0;
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sport->wdsize = 4;
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break;
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}
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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ret = sport_set_tx_params(sport, ¶m);
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if (ret) {
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dev_err(dev, "SPORT tx is busy!\n");
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return ret;
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}
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} else {
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ret = sport_set_rx_params(sport, ¶m);
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if (ret) {
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dev_err(dev, "SPORT rx is busy!\n");
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return ret;
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}
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}
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return 0;
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}
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#ifdef CONFIG_PM
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static int bfin_i2s_suspend(struct snd_soc_dai *dai)
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{
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struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
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if (dai->capture_active)
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sport_rx_stop(sport);
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if (dai->playback_active)
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sport_tx_stop(sport);
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return 0;
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}
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static int bfin_i2s_resume(struct snd_soc_dai *dai)
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{
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struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
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struct device *dev = &sport->pdev->dev;
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int ret;
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ret = sport_set_tx_params(sport, ¶m);
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if (ret) {
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dev_err(dev, "SPORT tx is busy!\n");
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return ret;
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}
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ret = sport_set_rx_params(sport, ¶m);
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if (ret) {
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dev_err(dev, "SPORT rx is busy!\n");
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return ret;
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}
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return 0;
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}
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#else
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#define bfin_i2s_suspend NULL
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#define bfin_i2s_resume NULL
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#endif
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#define BFIN_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
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SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
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SNDRV_PCM_RATE_96000)
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#define BFIN_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
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static struct snd_soc_dai_ops bfin_i2s_dai_ops = {
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.hw_params = bfin_i2s_hw_params,
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.set_fmt = bfin_i2s_set_dai_fmt,
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};
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static struct snd_soc_dai_driver bfin_i2s_dai = {
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.suspend = bfin_i2s_suspend,
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.resume = bfin_i2s_resume,
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.playback = {
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.channels_min = 1,
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.channels_max = 2,
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.rates = BFIN_I2S_RATES,
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.formats = BFIN_I2S_FORMATS,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 2,
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.rates = BFIN_I2S_RATES,
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.formats = BFIN_I2S_FORMATS,
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},
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.ops = &bfin_i2s_dai_ops,
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};
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static int __devinit bfin_i2s_probe(struct platform_device *pdev)
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{
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struct sport_device *sport;
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struct device *dev = &pdev->dev;
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int ret;
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sport = sport_create(pdev);
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if (!sport)
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return -ENODEV;
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/* register with the ASoC layers */
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ret = snd_soc_register_dai(dev, &bfin_i2s_dai);
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if (ret) {
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dev_err(dev, "Failed to register DAI: %d\n", ret);
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sport_delete(sport);
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return ret;
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}
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platform_set_drvdata(pdev, sport);
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return 0;
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}
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static int __devexit bfin_i2s_remove(struct platform_device *pdev)
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{
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struct sport_device *sport = platform_get_drvdata(pdev);
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snd_soc_unregister_dai(&pdev->dev);
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sport_delete(sport);
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return 0;
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}
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static struct platform_driver bfin_i2s_driver = {
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.probe = bfin_i2s_probe,
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.remove = __devexit_p(bfin_i2s_remove),
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.driver = {
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.name = "bfin-i2s",
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.owner = THIS_MODULE,
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},
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};
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module_platform_driver(bfin_i2s_driver);
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MODULE_DESCRIPTION("Analog Devices BF6XX i2s interface driver");
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MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
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MODULE_LICENSE("GPL v2");
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