[U-Boot] [PATCH 4/6 V2] Sound: I2S: Replacing I2S1 with I2S0 channel.

[Minkyu Kang <mk7.kang@samsung.com>]

On 04/08/13 15:44, Dani Krishna Mohan wrote:
> 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>
> ---
> changes in V2:
> 	- None
>  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);

please don't replacing.
please adds support i2c0.

>  
>  	/* 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 |
> 

Thanks,
Minkyu Kang.