linux-kernel - Re: [PATCH 4/5] soundwire: qcom: avoid dependency on CONFIG

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Message-ID: <931e8e36-63b5-2a29-1b0c-ee7f8ffbea64@marek.ca>
Date:   Mon, 8 Jun 2020 16:58:25 -0400
From:   Jonathan Marek <jonathan@...ek.ca>
To:     alsa-devel@...a-project.org
Cc:     Vinod Koul <vkoul@...nel.org>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH 4/5] soundwire: qcom: avoid dependency on CONFIG_SLIMBUS

On 6/8/20 4:43 PM, Jonathan Marek wrote:
> The driver may be used without slimbus, so don't depend on slimbus.
> 
> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
> ---
>   drivers/soundwire/Kconfig | 1 -
>   drivers/soundwire/qcom.c  | 5 +++++
>   2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soundwire/Kconfig b/drivers/soundwire/Kconfig
> index fa2b4ab92ed9..d121cf739090 100644
> --- a/drivers/soundwire/Kconfig
> +++ b/drivers/soundwire/Kconfig
> @@ -33,7 +33,6 @@ config SOUNDWIRE_INTEL
>   
>   config SOUNDWIRE_QCOM
>   	tristate "Qualcomm SoundWire Master driver"
> -	depends on SLIMBUS
>   	depends on SND_SOC
>   	help
>   	  SoundWire Qualcomm Master driver.
> diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
> index 14334442615f..ac81c64768ea 100644
> --- a/drivers/soundwire/qcom.c
> +++ b/drivers/soundwire/qcom.c
> @@ -769,13 +769,18 @@ static int qcom_swrm_probe(struct platform_device *pdev)
>   	if (!ctrl)
>   		return -ENOMEM;
>   
> +#ifdef CONFIG_SLIMBUS
>   	if (dev->parent->bus == &slimbus_bus) {
> +#else
> +	if (false) {
> +#endif
>   		ctrl->reg_read = qcom_swrm_ahb_reg_read;
>   		ctrl->reg_write = qcom_swrm_ahb_reg_write;
>   		ctrl->regmap = dev_get_regmap(dev->parent, NULL);
>   		if (!ctrl->regmap)
>   			return -EINVAL;
>   	} else {
> +

Oops, ended up with a stray whitespace here, will fix for v2.

>   		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>   
>   		ctrl->reg_read = qcom_swrm_cpu_reg_read;
>