linux-kernel - Re: [PATCH v2 3/4] thermal: mediatek: control buffer enablement tweaks

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Message-ID: <a143dfcd-7a6a-49ff-6bed-4ffdb0fa1c4a@collabora.com>
Date:   Thu, 21 Jul 2022 10:11:36 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Amjad Ouled-Ameur <aouledameur@...libre.com>,
        matthias.bgg@...il.com
Cc:     rafael@...nel.org, fparent@...libre.com, amitk@...nel.org,
        daniel.lezcano@...aro.org, devicetree@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-pm@...r.kernel.org,
        robh+dt@...nel.org, rui.zhang@...el.com,
        Markus Schneider-Pargmann <msp@...libre.com>
Subject: Re: [PATCH v2 3/4] thermal: mediatek: control buffer enablement
 tweaks

Il 20/07/22 20:18, Amjad Ouled-Ameur ha scritto:
> From: Markus Schneider-Pargmann <msp@...libre.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@...libre.com>
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> Reviewed-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
> Tested-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
> ---
>   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,

This is effectively GENMASK(31, 6) | BIT(3) :-)

> +	.apmixed_buffer_ctl_set = 0x1,

...and this is BIT(0)

>   }; >
>   /*
> @@ -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;

Since you're practically restructuring this function, please fix this wrong
variable type, as this should be a u32.

Regards,
Angelo