Re: [PATCH v9 2/5] thermal: mediatek: control buffer enablement tweaks

[Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>]

On 27/01/2023 23:21, Amjad Ouled-Ameur wrote:
> On 1/27/23 22:48, Daniel Lezcano wrote:
> > On 27/01/2023 16:44, Amjad Ouled-Ameur wrote:
> > > From: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
> > >
> > > 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@xxxxxxxxxxxx>
> > > Signed-off-by: Fabien Parent <fparent@xxxxxxxxxxxx>
> > > Signed-off-by: Amjad Ouled-Ameur <aouledameur@xxxxxxxxxxxx>
> > > Reviewed-by: AngeloGioacchino Del Regno 
> > > <angelogioacchino.delregno@xxxxxxxxxxxxx>
> > > ---
> > >   drivers/thermal/mtk_thermal.c | 25 ++++++++++++++++++-------
> > >   1 file changed, 18 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/drivers/thermal/mtk_thermal.c 
> > > b/drivers/thermal/mtk_thermal.c
> > > index 8440692e3890..d8ddceb75372 100644
> > > --- a/drivers/thermal/mtk_thermal.c
> > > +++ b/drivers/thermal/mtk_thermal.c
> > > @@ -271,6 +271,9 @@ 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 {
> > > @@ -514,6 +517,9 @@ 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 = GENMASK(31, 6) | BIT(3),
> > > +    .apmixed_buffer_ctl_set = BIT(0),
> > >   };
> > >     /*
> > > @@ -963,14 +969,18 @@ 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;
> > > +    u32 tmp;
> > > +
> > > +    if (!mt->conf->apmixed_buffer_ctl_reg)
> > > +        return;
> > >   -    tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
> > > -    tmp &= ~(0x37);
> > > -    tmp |= 0x1;
> > > -    writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
> > > +    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);
> > >   }
> > >   @@ -1070,8 +1080,9 @@ 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);
> > >       }
> >
> > This change conflicts with commit 4f2ee0aa2e706
> >
> > I fixed it with:
> >
> > -       if (mt->conf->version != MTK_THERMAL_V1) {
> > -               mtk_thermal_turn_on_buffer(apmixed_base);
> > +       mtk_thermal_turn_on_buffer(apmixed_base);
> > +
> > +       if (mt->conf->version != MTK_THERMAL_V1)
> >                 mtk_thermal_release_periodic_ts(mt, auxadc_base);
> > -       }
> I think it's rather MTK_THERMAL_V2 and not MTK_THERMAL_V1. Other than 
> that, it looks

It was before if (version == MTK_THERMAL_V2). Now there is a V3, so it 
is replaced by if (version != MTK_THERMAL_V1) in order to include the V3


> > Let me know if there is something wrong.

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