[U-Boot] [PATCH 4/4] Sound: I2S: Replacing I2S1 with I2S0 channel.

[Dani Krishna Mohan]

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 at samsung.com>
---
 arch/arm/include/asm/arch-exynos/i2s-regs.h |    6 ++++++
 drivers/sound/samsung-i2s.c                 |   16 ++++++++++------
 2 files changed, 16 insertions(+), 6 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 49921e5..8e8a2bc 100644
--- a/drivers/sound/samsung-i2s.c
+++ b/drivers/sound/samsung-i2s.c
@@ -303,21 +303,25 @@ int i2s_tx_init(struct i2stx_info *pi2s_tx)
 				(struct i2s_reg *)pi2s_tx->base_address;
 
 	/* Initialize GPIO for I2s */
-	exynos_pinmux_config(PERIPH_ID_I2S1, 0);
+	exynos_pinmux_config(PERIPH_ID_I2S0, 0);
 
 	/* Set EPLL Clock */
-	ret = set_epll_clk(pi2s_tx->audio_pll_clk);
+	ret = set_epll_clk(pi2s_tx->samplingrate * pi2s_tx->rfs * 4);
 	if (ret != 0) {
 		debug("%s: epll clock set rate falied\n", __func__);
 		return -1;
 	}
 
-	/* Select Clk Source for Audio1 */
+	/* Select Clk Source for Audio0 */
 	set_i2s_clk_source();
 
-	/* Set Prescaler to get MCLK */
-	set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk,
-				(pi2s_tx->samplingrate * (pi2s_tx->rfs)));
+	/*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);
 
 	/* Configure I2s format */
 	ret = i2s_set_fmt(i2s_reg, (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-- 
1.7.9.5