This patch makes required changes to make use of I2S0 channel instead of I2S1 channel on exynos5250.
Signed-off-by: Dani Krishna Mohan krishna.md@samsung.com --- arch/arm/include/asm/arch-exynos/i2s-regs.h | 6 ++++ drivers/sound/samsung-i2s.c | 42 +++++++++++++++++++-------- 2 files changed, 36 insertions(+), 12 deletions(-)
diff --git a/arch/arm/include/asm/arch-exynos/i2s-regs.h b/arch/arm/include/asm/arch-exynos/i2s-regs.h index 613b9b7..4a4a7a0 100644 --- a/arch/arm/include/asm/arch-exynos/i2s-regs.h +++ b/arch/arm/include/asm/arch-exynos/i2s-regs.h @@ -8,10 +8,12 @@ #ifndef __I2S_REGS_H__ #define __I2S_REGS_H__
+#define CON_RESET (1 << 31) #define CON_TXFIFO_FULL (1 << 8) #define CON_TXCH_PAUSE (1 << 4) #define CON_ACTIVE (1 << 0)
+#define MOD_OP_CLK (3 << 30) #define MOD_BLCP_SHIFT 24 #define MOD_BLCP_16BIT (0 << MOD_BLCP_SHIFT) #define MOD_BLCP_8BIT (1 << MOD_BLCP_SHIFT) @@ -24,6 +26,7 @@ #define MOD_BLC_MASK (3 << 13)
#define MOD_SLAVE (1 << 11) +#define MOD_RCLKSRC (0 << 10) #define MOD_MASK (3 << 8) #define MOD_LR_LLOW (0 << 7) #define MOD_LR_RLOW (1 << 7) @@ -47,4 +50,7 @@ #define FIC_TXFLUSH (1 << 15) #define FIC_RXFLUSH (1 << 7)
+#define PSREN (1 << 15) +#define PSVAL (3 << 8) + #endif /* __I2S_REGS_H__ */ diff --git a/drivers/sound/samsung-i2s.c b/drivers/sound/samsung-i2s.c index 9caa4d2..66db9a8 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; @@ -300,28 +299,47 @@ 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__); return -1; }
- /* Select Clk Source for Audio1 */ + /* Select Clk Source for Audio 0 or 1 */ set_i2s_clk_source(pi2s_tx->id);
- /* Set Prescaler to get MCLK */ - 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 */ + set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk, + (pi2s_tx->samplingrate * (pi2s_tx->rfs)), + pi2s_tx->id); + } /* 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);