diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/sound/samsung-i2s.c | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/drivers/sound/samsung-i2s.c b/drivers/sound/samsung-i2s.c index 30d1470..47f155f 100644 --- a/drivers/sound/samsung-i2s.c +++ b/drivers/sound/samsung-i2s.c @@ -65,7 +65,6 @@ static void i2s_txctrl(struct i2s_reg *i2s_reg, int on) if (on) { con |= CON_ACTIVE; con &= ~CON_TXCH_PAUSE; - } else { con |= CON_TXCH_PAUSE; con &= ~CON_ACTIVE; @@ -300,18 +299,29 @@ int i2s_tx_init(struct i2stx_info *pi2s_tx) int ret; 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); + + /* Set EPLL Clock */ + ret = set_epll_clk(pi2s_tx->samplingrate * pi2s_tx->rfs * 4); + } else if (pi2s_tx->id == 1) { + /* Initialize GPIO for I2S-1 */ + exynos_pinmux_config(PERIPH_ID_I2S1, 0); + + /* Set EPLL Clock */ + ret = set_epll_clk(pi2s_tx->audio_pll_clk); + } else { + debug("%s: unsupported i2s-%d bus\n", __func__, pi2s_tx->id); + return -1; + } - /* Initialize GPIO for I2s */ - exynos_pinmux_config(PERIPH_ID_I2S1, 0); - - /* Set EPLL Clock */ - ret = set_epll_clk(pi2s_tx->audio_pll_clk); if (ret != 0) { - debug("%s: epll clock set rate falied\n", __func__); + debug("%s: epll clock set rate failed\n", __func__); return -1; } - /* Select Clk Source for Audio1 */ + /* Select Clk Source for Audio 0 or 1 */ ret = set_i2s_clk_source(pi2s_tx->id); if (ret == -1) { debug("%s: unsupported clock for i2s-%d\n", __func__, @@ -319,10 +329,19 @@ int i2s_tx_init(struct i2stx_info *pi2s_tx) return -1; } - /* Set Prescaler to get MCLK */ - ret = set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk, - (pi2s_tx->samplingrate * (pi2s_tx->rfs)), - pi2s_tx->id); + if (pi2s_tx->id == 0) { + /*Reset the i2s module */ + writel(CON_RESET, &i2s_reg->con); + + writel(MOD_OP_CLK | MOD_RCLKSRC, &i2s_reg->mod); + /* set i2s prescaler */ + writel(PSREN | PSVAL, &i2s_reg->psr); + } else { + /* Set Prescaler to get MCLK */ + ret = set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk, + (pi2s_tx->samplingrate * (pi2s_tx->rfs)), + pi2s_tx->id); + } if (ret == -1) { debug("%s: unsupported prescalar for i2s-%d\n", __func__, pi2s_tx->id); @@ -331,7 +350,7 @@ int i2s_tx_init(struct i2stx_info *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)); + 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); |