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Message-ID: <f8cb0af1-96e2-36e8-474f-421d152117fb@gmail.com>
Date:   Thu, 21 Jul 2022 10:57:49 +0200
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Subject: Re: [PATCH v2 3/4] thermal: mediatek: control buffer enablement
 tweaks
Content-Language: en-US
To:     Amjad Ouled-Ameur <aouledameur@baylibre.com>
Cc:     rafael@kernel.org, fparent@baylibre.com, amitk@kernel.org,
        daniel.lezcano@linaro.org, devicetree@vger.kernel.org,
        krzysztof.kozlowski+dt@linaro.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org,
        robh+dt@kernel.org, rui.zhang@intel.com,
        Markus Schneider-Pargmann <msp@baylibre.com>
References: <20220720181854.547881-1-aouledameur@baylibre.com>
 <20220720181854.547881-4-aouledameur@baylibre.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
In-Reply-To: <20220720181854.547881-4-aouledameur@baylibre.com>
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On 20/07/2022 20:18, Amjad Ouled-Ameur wrote:
> From: Markus Schneider-Pargmann <msp@baylibre.com>
> 
> Add logic in order to be able to turn on the control buffer on MT8365.
> This change now allows to have control buffer support for MTK_THERMAL_V1,
> and it allows to define the register offset, and mask used to enable it.
> 
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> Reviewed-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
> Tested-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>

Here we will need your Signed-off-by as you are sending the patch :)

Regards,
Matthias

> ---
>   drivers/thermal/mtk_thermal.c | 23 +++++++++++++++++------
>   1 file changed, 17 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index 216eb0d61c5b..1dc276f8c4f1 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -283,6 +283,9 @@ struct mtk_thermal_data {
>   	bool need_switch_bank;
>   	struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
>   	enum mtk_thermal_version version;
> +	u32 apmixed_buffer_ctl_reg;
> +	u32 apmixed_buffer_ctl_mask;
> +	u32 apmixed_buffer_ctl_set;
>   };
>   
>   struct mtk_thermal {
> @@ -578,6 +581,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
>   	.adcpnp = mt7622_adcpnp,
>   	.sensor_mux_values = mt7622_mux_values,
>   	.version = MTK_THERMAL_V2,
> +	.apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
> +	.apmixed_buffer_ctl_mask = ~0x37,
> +	.apmixed_buffer_ctl_set = 0x1,
>   };
>   
>   /*
> @@ -1031,14 +1037,18 @@ static const struct of_device_id mtk_thermal_of_match[] = {
>   };
>   MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
>   
> -static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
> +static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
> +				       void __iomem *apmixed_base)
>   {
>   	int tmp;
>   
> -	tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
> -	tmp &= ~(0x37);
> -	tmp |= 0x1;
> -	writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
> +	if (!mt->conf->apmixed_buffer_ctl_reg)
> +		return;
> +
> +	tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
> +	tmp &= mt->conf->apmixed_buffer_ctl_mask;
> +	tmp |= mt->conf->apmixed_buffer_ctl_set;
> +	writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
>   	udelay(200);
>   }
>   
> @@ -1138,8 +1148,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>   		goto err_disable_clk_auxadc;
>   	}
>   
> +	mtk_thermal_turn_on_buffer(mt, apmixed_base);
> +
>   	if (mt->conf->version == MTK_THERMAL_V2) {
> -		mtk_thermal_turn_on_buffer(apmixed_base);
>   		mtk_thermal_release_periodic_ts(mt, auxadc_base);
>   	}
>