diff options
Diffstat (limited to 'drivers/sound/samsung-i2s.c')
| -rw-r--r-- | drivers/sound/samsung-i2s.c | 111 |
1 files changed, 98 insertions, 13 deletions
diff --git a/drivers/sound/samsung-i2s.c b/drivers/sound/samsung-i2s.c index 5cd585808a..c19e08e7e3 100644 --- a/drivers/sound/samsung-i2s.c +++ b/drivers/sound/samsung-i2s.c @@ -5,6 +5,7 @@ */ #include <common.h> +#include <dm.h> #include <i2s.h> #include <sound.h> #include <asm/arch/clk.h> @@ -255,13 +256,13 @@ static int i2s_set_samplesize(struct i2s_reg *i2s_reg, unsigned int blc) return 0; } -int i2s_transfer_tx_data(struct i2s_uc_priv *pi2s_tx, unsigned int *data, - unsigned long data_size) +int i2s_transfer_tx_data(struct i2s_uc_priv *pi2s_tx, void *data, + uint data_size) { + struct i2s_reg *i2s_reg = (struct i2s_reg *)pi2s_tx->base_address; + u32 *ptr; int i; int start; - struct i2s_reg *i2s_reg = - (struct i2s_reg *)pi2s_tx->base_address; if (data_size < FIFO_LENGTH) { debug("%s : Invalid data size\n", __func__); @@ -269,17 +270,17 @@ int i2s_transfer_tx_data(struct i2s_uc_priv *pi2s_tx, unsigned int *data, } /* fill the tx buffer before stating the tx transmit */ - for (i = 0; i < FIFO_LENGTH; i++) - writel(*data++, &i2s_reg->txd); + for (i = 0, ptr = data; i < FIFO_LENGTH; i++) + writel(*ptr++, &i2s_reg->txd); - data_size -= FIFO_LENGTH; + data_size -= sizeof(*ptr) * FIFO_LENGTH; i2s_txctrl(i2s_reg, I2S_TX_ON); while (data_size > 0) { start = get_timer(0); if (!(CON_TXFIFO_FULL & (readl(&i2s_reg->con)))) { - writel(*data++, &i2s_reg->txd); - data_size--; + writel(*ptr++, &i2s_reg->txd); + data_size -= sizeof(*ptr); } else { if (get_timer(start) > TIMEOUT_I2S_TX) { i2s_txctrl(i2s_reg, I2S_TX_OFF); @@ -296,8 +297,8 @@ int i2s_transfer_tx_data(struct i2s_uc_priv *pi2s_tx, unsigned int *data, int i2s_tx_init(struct i2s_uc_priv *pi2s_tx) { int ret; - struct i2s_reg *i2s_reg = - (struct i2s_reg *)pi2s_tx->base_address; + struct i2s_reg *i2s_reg = (struct i2s_reg *)pi2s_tx->base_address; + if (pi2s_tx->id == 0) { /* Initialize GPIO for I2S-0 */ exynos_pinmux_config(PERIPH_ID_I2S0, 0); @@ -348,8 +349,8 @@ int i2s_tx_init(struct i2s_uc_priv *pi2s_tx) } /* Configure I2s format */ - ret = i2s_set_fmt(i2s_reg, (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | - SND_SOC_DAIFMT_CBM_CFM)); + ret = i2s_set_fmt(i2s_reg, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM); if (ret == 0) { i2s_set_lr_framesize(i2s_reg, pi2s_tx->rfs); ret = i2s_set_samplesize(i2s_reg, pi2s_tx->bitspersample); @@ -368,3 +369,87 @@ int i2s_tx_init(struct i2s_uc_priv *pi2s_tx) return ret; } + +static int samsung_i2s_tx_data(struct udevice *dev, void *data, uint data_size) +{ + struct i2s_uc_priv *priv = dev_get_uclass_priv(dev); + + return i2s_transfer_tx_data(priv, data, data_size); +} + +static int samsung_i2s_probe(struct udevice *dev) +{ + struct i2s_uc_priv *priv = dev_get_uclass_priv(dev); + + return i2s_tx_init(priv); +} + +static int samsung_i2s_ofdata_to_platdata(struct udevice *dev) +{ + struct i2s_uc_priv *priv = dev_get_uclass_priv(dev); + ulong base; + + /* + * Get the pre-defined sound specific values from FDT. + * All of these are expected to be correct otherwise + * wrong register values in i2s setup parameters + * may result in no sound play. + */ + base = dev_read_addr(dev); + if (base == FDT_ADDR_T_NONE) { + debug("%s: Missing i2s base\n", __func__); + return -EINVAL; + } + priv->base_address = base; + + if (dev_read_u32u(dev, "samsung,i2s-epll-clock-frequency", + &priv->audio_pll_clk)) + goto err; + debug("audio_pll_clk = %d\n", priv->audio_pll_clk); + if (dev_read_u32u(dev, "samsung,i2s-sampling-rate", + &priv->samplingrate)) + goto err; + debug("samplingrate = %d\n", priv->samplingrate); + if (dev_read_u32u(dev, "samsung,i2s-bits-per-sample", + &priv->bitspersample)) + goto err; + debug("bitspersample = %d\n", priv->bitspersample); + if (dev_read_u32u(dev, "samsung,i2s-channels", &priv->channels)) + goto err; + debug("channels = %d\n", priv->channels); + if (dev_read_u32u(dev, "samsung,i2s-lr-clk-framesize", &priv->rfs)) + goto err; + debug("rfs = %d\n", priv->rfs); + if (dev_read_u32u(dev, "samsung,i2s-bit-clk-framesize", &priv->bfs)) + goto err; + debug("bfs = %d\n", priv->bfs); + + if (dev_read_u32u(dev, "samsung,i2s-id", &priv->id)) + goto err; + debug("id = %d\n", priv->id); + + return 0; + +err: + debug("fail to get sound i2s node properties\n"); + + return -EINVAL; +} + +static const struct i2s_ops samsung_i2s_ops = { + .tx_data = samsung_i2s_tx_data, +}; + +static const struct udevice_id samsung_i2s_ids[] = { + { .compatible = "samsung,s5pv210-i2s" }, + { } +}; + +U_BOOT_DRIVER(samsung_i2s) = { + .name = "samsung_i2s", + .id = UCLASS_I2S, + .of_match = samsung_i2s_ids, + .probe = samsung_i2s_probe, + .ofdata_to_platdata = samsung_i2s_ofdata_to_platdata, + .ops = &samsung_i2s_ops, +}; |