diff options
Diffstat (limited to 'sound/soc/atmel/atmel-i2s.c')
| -rw-r--r-- | sound/soc/atmel/atmel-i2s.c | 82 |
1 files changed, 51 insertions, 31 deletions
diff --git a/sound/soc/atmel/atmel-i2s.c b/sound/soc/atmel/atmel-i2s.c index bbe2b638abb5..762199faf872 100644 --- a/sound/soc/atmel/atmel-i2s.c +++ b/sound/soc/atmel/atmel-i2s.c @@ -163,11 +163,14 @@ struct atmel_i2s_gck_param { #define I2S_MCK_12M288 12288000UL #define I2S_MCK_11M2896 11289600UL +#define I2S_MCK_6M144 6144000UL /* mck = (32 * (imckfs+1) / (imckdiv+1)) * fs */ static const struct atmel_i2s_gck_param gck_params[] = { + /* mck = 6.144Mhz */ + { 8000, I2S_MCK_6M144, 1, 47}, /* mck = 768 fs */ + /* mck = 12.288MHz */ - { 8000, I2S_MCK_12M288, 0, 47}, /* mck = 1536 fs */ { 16000, I2S_MCK_12M288, 1, 47}, /* mck = 768 fs */ { 24000, I2S_MCK_12M288, 3, 63}, /* mck = 512 fs */ { 32000, I2S_MCK_12M288, 3, 47}, /* mck = 384 fs */ @@ -200,6 +203,7 @@ struct atmel_i2s_dev { unsigned int fmt; const struct atmel_i2s_gck_param *gck_param; const struct atmel_i2s_caps *caps; + int clk_use_no; }; static irqreturn_t atmel_i2s_interrupt(int irq, void *dev_id) @@ -321,9 +325,16 @@ static int atmel_i2s_hw_params(struct snd_pcm_substream *substream, { struct atmel_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); - unsigned int mr = 0; + unsigned int mr = 0, mr_mask; int ret; + mr_mask = ATMEL_I2SC_MR_FORMAT_MASK | ATMEL_I2SC_MR_MODE_MASK | + ATMEL_I2SC_MR_DATALENGTH_MASK; + if (is_playback) + mr_mask |= ATMEL_I2SC_MR_TXMONO; + else + mr_mask |= ATMEL_I2SC_MR_RXMONO; + switch (dev->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: mr |= ATMEL_I2SC_MR_FORMAT_I2S; @@ -334,8 +345,8 @@ static int atmel_i2s_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - switch (dev->fmt & SND_SOC_DAIFMT_MASTER_MASK) { - case SND_SOC_DAIFMT_CBS_CFS: + switch (dev->fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { + case SND_SOC_DAIFMT_BP_FP: /* codec is slave, so cpu is master */ mr |= ATMEL_I2SC_MR_MODE_MASTER; ret = atmel_i2s_get_gck_param(dev, params_rate(params)); @@ -343,7 +354,7 @@ static int atmel_i2s_hw_params(struct snd_pcm_substream *substream, return ret; break; - case SND_SOC_DAIFMT_CBM_CFM: + case SND_SOC_DAIFMT_BC_FC: /* codec is master, so cpu is slave */ mr |= ATMEL_I2SC_MR_MODE_SLAVE; dev->gck_param = NULL; @@ -402,7 +413,7 @@ static int atmel_i2s_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - return regmap_write(dev->regmap, ATMEL_I2SC_MR, mr); + return regmap_update_bits(dev->regmap, ATMEL_I2SC_MR, mr_mask, mr); } static int atmel_i2s_switch_mck_generator(struct atmel_i2s_dev *dev, @@ -495,29 +506,32 @@ static int atmel_i2s_trigger(struct snd_pcm_substream *substream, int cmd, is_master = (mr & ATMEL_I2SC_MR_MODE_MASK) == ATMEL_I2SC_MR_MODE_MASTER; /* If master starts, enable the audio clock. */ - if (is_master && mck_enabled) - err = atmel_i2s_switch_mck_generator(dev, true); - if (err) - return err; + if (is_master && mck_enabled) { + if (!dev->clk_use_no) { + err = atmel_i2s_switch_mck_generator(dev, true); + if (err) + return err; + } + dev->clk_use_no++; + } err = regmap_write(dev->regmap, ATMEL_I2SC_CR, cr); if (err) return err; /* If master stops, disable the audio clock. */ - if (is_master && !mck_enabled) - err = atmel_i2s_switch_mck_generator(dev, false); + if (is_master && !mck_enabled) { + if (dev->clk_use_no == 1) { + err = atmel_i2s_switch_mck_generator(dev, false); + if (err) + return err; + } + dev->clk_use_no--; + } return err; } -static const struct snd_soc_dai_ops atmel_i2s_dai_ops = { - .prepare = atmel_i2s_prepare, - .trigger = atmel_i2s_trigger, - .hw_params = atmel_i2s_hw_params, - .set_fmt = atmel_i2s_set_dai_fmt, -}; - static int atmel_i2s_dai_probe(struct snd_soc_dai *dai) { struct atmel_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); @@ -526,8 +540,15 @@ static int atmel_i2s_dai_probe(struct snd_soc_dai *dai) return 0; } +static const struct snd_soc_dai_ops atmel_i2s_dai_ops = { + .probe = atmel_i2s_dai_probe, + .prepare = atmel_i2s_prepare, + .trigger = atmel_i2s_trigger, + .hw_params = atmel_i2s_hw_params, + .set_fmt = atmel_i2s_set_dai_fmt, +}; + static struct snd_soc_dai_driver atmel_i2s_dai = { - .probe = atmel_i2s_dai_probe, .playback = { .channels_min = 1, .channels_max = 2, @@ -541,11 +562,13 @@ static struct snd_soc_dai_driver atmel_i2s_dai = { .formats = ATMEL_I2S_FORMATS, }, .ops = &atmel_i2s_dai_ops, - .symmetric_rates = 1, + .symmetric_rate = 1, + .symmetric_sample_bits = 1, }; static const struct snd_soc_component_driver atmel_i2s_component = { - .name = "atmel-i2s", + .name = "atmel-i2s", + .legacy_dai_naming = 1, }; static int atmel_i2s_sama5d2_mck_init(struct atmel_i2s_dev *dev, @@ -563,8 +586,8 @@ static int atmel_i2s_sama5d2_mck_init(struct atmel_i2s_dev *dev, err = PTR_ERR(muxclk); if (err == -EPROBE_DEFER) return -EPROBE_DEFER; - dev_warn(dev->dev, - "failed to get the I2S clock control: %d\n", err); + dev_dbg(dev->dev, + "failed to get the I2S clock control: %d\n", err); return 0; } @@ -595,7 +618,7 @@ static int atmel_i2s_probe(struct platform_device *pdev) struct regmap *regmap; void __iomem *base; int irq; - int err = -ENXIO; + int err; unsigned int pcm_flags = 0; unsigned int version; @@ -610,8 +633,7 @@ static int atmel_i2s_probe(struct platform_device *pdev) dev->caps = match->data; /* Map I/O registers. */ - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(&pdev->dev, mem); + base = devm_platform_get_and_ioremap_resource(pdev, 0, &mem); if (IS_ERR(base)) return PTR_ERR(base); @@ -698,19 +720,17 @@ static int atmel_i2s_probe(struct platform_device *pdev) return 0; } -static int atmel_i2s_remove(struct platform_device *pdev) +static void atmel_i2s_remove(struct platform_device *pdev) { struct atmel_i2s_dev *dev = platform_get_drvdata(pdev); clk_disable_unprepare(dev->pclk); - - return 0; } static struct platform_driver atmel_i2s_driver = { .driver = { .name = "atmel_i2s", - .of_match_table = of_match_ptr(atmel_i2s_dt_ids), + .of_match_table = atmel_i2s_dt_ids, }, .probe = atmel_i2s_probe, .remove = atmel_i2s_remove, |