linux-kernel - Re: [PATCH 3/6] soundwire: qcom: set continue execution flag for ignored commands

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Message-ID: <20210201141642.GB2771@vkoul-mobl>
Date:   Mon, 1 Feb 2021 19:46:42 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     yung-chuan.liao@...ux.intel.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 3/6] soundwire: qcom: set continue execution flag for
 ignored commands

On 29-01-21, 17:32, Srinivas Kandagatla wrote:
> version 1.5.1 and higher IPs of this controller required to set
> continue execution on ingored command flag. This patch sets this flag.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
>  drivers/soundwire/qcom.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
> index da6e0d4e9622..3669bac11a32 100644
> --- a/drivers/soundwire/qcom.c
> +++ b/drivers/soundwire/qcom.c
> @@ -40,6 +40,7 @@
>  #define SWRM_CMD_FIFO_CMD					0x308
>  #define SWRM_CMD_FIFO_STATUS					0x30C
>  #define SWRM_CMD_FIFO_CFG_ADDR					0x314
> +#define SWRM_CONTINUE_EXEC_ON_CMD_IGNORE			BIT(31)
>  #define SWRM_RD_WR_CMD_RETRIES					0x7
>  #define SWRM_CMD_FIFO_RD_FIFO_ADDR				0x318
>  #define SWRM_ENUMERATOR_CFG_ADDR				0x500
> @@ -345,7 +346,16 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
>  	ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);
>  
>  	/* Configure number of retries of a read/write cmd */
> -	ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR, SWRM_RD_WR_CMD_RETRIES);
> +	if (ctrl->version_major == 1 && ctrl->version_minor >= 5 &&
> +	    ctrl->version_step >= 1) {

why not use raw version value?

        if (ctrl->raw > 0x10501 )

> +		/* Only for versions >= 1.5.1 */
> +		ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR,
> +				SWRM_RD_WR_CMD_RETRIES |
> +				SWRM_CONTINUE_EXEC_ON_CMD_IGNORE);
> +	} else {
> +		ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR,
> +				SWRM_RD_WR_CMD_RETRIES);
> +	}
>  
>  	/* Set IRQ to PULSE */
>  	ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR,
> -- 
> 2.21.0

-- 
~Vinod