diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sunxi/sun4i-i2s.c | 77 |
1 files changed, 69 insertions, 8 deletions
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index dfb794ffff92..87feb5a14cff 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -82,7 +82,7 @@ #define SUN4I_I2S_TX_CNT_REG 0x2c #define SUN4I_I2S_TX_CHAN_SEL_REG 0x30 -#define SUN4I_I2S_TX_CHAN_SEL(num_chan) (((num_chan) - 1) << 0) +#define SUN4I_I2S_CHAN_SEL(num_chan) (((num_chan) - 1) << 0) #define SUN4I_I2S_TX_CHAN_MAP_REG 0x34 #define SUN4I_I2S_TX_CHAN_MAP(chan, sample) ((sample) << (chan << 2)) @@ -98,6 +98,10 @@ * @sun4i_i2s_regmap: regmap config to use. * @mclk_offset: Value by which mclkdiv needs to be adjusted. * @bclk_offset: Value by which bclkdiv needs to be adjusted. + * @field_txchanmap: location of the tx channel mapping register. + * @field_rxchanmap: location of the rx channel mapping register. + * @field_txchansel: location of the tx channel select bit fields. + * @field_rxchansel: location of the rx channel select bit fields. */ struct sun4i_i2s_quirks { bool has_reset; @@ -105,6 +109,12 @@ struct sun4i_i2s_quirks { const struct regmap_config *sun4i_i2s_regmap; unsigned int mclk_offset; unsigned int bclk_offset; + + /* Register fields for i2s */ + struct reg_field field_txchanmap; + struct reg_field field_rxchanmap; + struct reg_field field_txchansel; + struct reg_field field_rxchansel; }; struct sun4i_i2s { @@ -118,6 +128,12 @@ struct sun4i_i2s { struct snd_dmaengine_dai_dma_data capture_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data; + /* Register fields for i2s */ + struct regmap_field *field_txchanmap; + struct regmap_field *field_rxchanmap; + struct regmap_field *field_txchansel; + struct regmap_field *field_rxchansel; + const struct sun4i_i2s_quirks *variant; }; @@ -268,6 +284,17 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, if (params_channels(params) != 2) return -EINVAL; + /* Map the channels for playback and capture */ + regmap_field_write(i2s->field_txchanmap, 0x76543210); + regmap_field_write(i2s->field_rxchanmap, 0x00003210); + + /* Configure the channels */ + regmap_field_write(i2s->field_txchansel, + SUN4I_I2S_CHAN_SEL(params_channels(params))); + + regmap_field_write(i2s->field_rxchansel, + SUN4I_I2S_CHAN_SEL(params_channels(params))); + switch (params_physical_width(params)) { case 16: width = DMA_SLAVE_BUSWIDTH_2_BYTES; @@ -490,13 +517,6 @@ static int sun4i_i2s_startup(struct snd_pcm_substream *substream, SUN4I_I2S_CTRL_SDO_EN_MASK, SUN4I_I2S_CTRL_SDO_EN(0)); - /* Enable the first two channels */ - regmap_write(i2s->regmap, SUN4I_I2S_TX_CHAN_SEL_REG, - SUN4I_I2S_TX_CHAN_SEL(2)); - - /* Map them to the two first samples coming in */ - regmap_write(i2s->regmap, SUN4I_I2S_TX_CHAN_MAP_REG, - SUN4I_I2S_TX_CHAN_MAP(0, 0) | SUN4I_I2S_TX_CHAN_MAP(1, 1)); return clk_prepare_enable(i2s->mod_clk); } @@ -681,14 +701,49 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = { .has_reset = false, .reg_offset_txdata = SUN4I_I2S_FIFO_TX_REG, .sun4i_i2s_regmap = &sun4i_i2s_regmap_config, + .field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31), + .field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31), + .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2), + .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2), }; static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = { .has_reset = true, .reg_offset_txdata = SUN4I_I2S_FIFO_TX_REG, .sun4i_i2s_regmap = &sun4i_i2s_regmap_config, + .field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31), + .field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31), + .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2), + .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2), }; +static int sun4i_i2s_init_regmap_fields(struct device *dev, + struct sun4i_i2s *i2s) +{ + i2s->field_txchanmap = + devm_regmap_field_alloc(dev, i2s->regmap, + i2s->variant->field_txchanmap); + if (IS_ERR(i2s->field_txchanmap)) + return PTR_ERR(i2s->field_txchanmap); + + i2s->field_rxchanmap = + devm_regmap_field_alloc(dev, i2s->regmap, + i2s->variant->field_rxchanmap); + if (IS_ERR(i2s->field_rxchanmap)) + return PTR_ERR(i2s->field_rxchanmap); + + i2s->field_txchansel = + devm_regmap_field_alloc(dev, i2s->regmap, + i2s->variant->field_txchansel); + if (IS_ERR(i2s->field_txchansel)) + return PTR_ERR(i2s->field_txchansel); + + i2s->field_rxchansel = + devm_regmap_field_alloc(dev, i2s->regmap, + i2s->variant->field_rxchansel); + return PTR_ERR_OR_ZERO(i2s->field_rxchansel); +} + static int sun4i_i2s_probe(struct platform_device *pdev) { struct sun4i_i2s *i2s; @@ -782,6 +837,12 @@ static int sun4i_i2s_probe(struct platform_device *pdev) goto err_suspend; } + ret = sun4i_i2s_init_regmap_fields(&pdev->dev, i2s); + if (ret) { + dev_err(&pdev->dev, "Could not initialise regmap fields\n"); + goto err_suspend; + } + return 0; err_suspend: |