Re: [PATCH v2 2/4] thermal: mediatek: add Mediatek thermal driver for mt2712

[Dawei Chien <dawei.chien@mediatek.com>]

On Thu, 2017-08-31 at 21:10 +0800, Zhang Rui wrote:
> On Fri, 2017-08-25 at 11:39 +0800, Dawei Chien wrote:
> > On Fri, 2017-08-25 at 11:23 +0800, Zhang Rui wrote:
> > > 
> > > Hi, Dawei,
> > > 
> > > 
> > > On Fri, 2017-08-25 at 11:10 +0800, Dawei Chien wrote:
> > > > 
> > > > On Fri, 2017-08-25 at 10:30 +0800, Zhang Rui wrote:
> > > > > 
> > > > > 
> > > > > On Tue, 2017-08-08 at 21:23 +0800, Zhang Rui wrote:
> > > > > > 
> > > > > > 
> > > > > > On Tue, 2017-08-01 at 15:28 +0800, Louis Yu wrote:
> > > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > This patch adds support for mt2712 chip to mtk_thermal,
> > > > > > > and integrate mt2712 into the same mediatek thermal driver.
> > > > > > > MT2712 has only 1 bank and 4 sensors.
> > > > > > > 
> > > > > > > Signed-off-by: Louis Yu <louis.yu@mediatek.com>
> > > > > > > ---
> > > > > > >  drivers/thermal/mtk_thermal.c | 70
> > > > > > > ++++++++++++++++++++++++++++++++++++++++---
> > > > > > >  1 file changed, 66 insertions(+), 4 deletions(-)
> > > > > > > 
> > > > > > > diff --git a/drivers/thermal/mtk_thermal.c
> > > > > > > b/drivers/thermal/mtk_thermal.c
> > > > > > > index 7737f14..e35d28d 100644
> > > > > > > --- a/drivers/thermal/mtk_thermal.c
> > > > > > > +++ b/drivers/thermal/mtk_thermal.c
> > > > > > > @@ -3,6 +3,7 @@
> > > > > > >   * Author: Hanyi Wu <hanyi.wu@mediatek.com>
> > > > > > >   *         Sascha Hauer <s.hauer@pengutronix.de>
> > > > > > >   *         Dawei Chien <dawei.chien@mediatek.com>
> > > > > > > + *         Louis Yu <louis.yu@mediatek.com>
> > > > > > I need the feedback from the previous authors for the changes
> > > > > > in
> > > > > > all
> > > > > > this patch set.
> > > > > > 
> > > > > Hanyi, Sascha and Dawei,
> > > > > 
> > > > > can you please review this patch and let me know your opinion?
> > > > > 
> > > > > thanks,
> > > > > rui
> > > > Hi Rui,
> > > > In my opinion, I agree this patch set for supporting MT2712
> > > > thermal
> > > > sensor.
> > > > 
> > > > Reviewed-by: Dawei Chien <dawei.chien@mediatek.com>
> > > > 
> > > thanks for reviewing.
> > > > 
> > > > > 
> > > > > 
> > > > > > 
> > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > >   *
> > > > > > >   * This program is free software; you can redistribute it
> > > > > > > and/or
> > > > > > > modify
> > > > > > >   * it under the terms of the GNU General Public License
> > > > > > > version 2
> > > > > > > as
> > > > > > > @@ -111,9 +112,10 @@
> > > > > > >  
> > > > > > >  /*
> > > > > > >   * Layout of the fuses providing the calibration data
> > > > > > > - * These macros could be used for both MT8173 and MT2701.
> > > > > > > + * These macros could be used for both MT8173, MT2701, and
> > > > > > > MT2712.
> > > > > > >   * MT8173 has five sensors and need five VTS calibration
> > > > > > > data,
> > > > > > > - * and MT2701 has three sensors and need three VTS
> > > > > > > calibration
> > > > > > > data.
> > > > > > > + * and MT2701 has three sensors and need three VTS
> > > > > > > calibration
> > > > > > > data,
> > > > > > > + * and MT2712 has four sensors and need four VTS
> > > > > > > calibration
> > > > > > > data.
> > > > > > >   */
> > > > > > why bother change these comments again in patch 3/4?
> > > > > > 
> > > > > > thanks,
> > > > > > rui
> > > > Hi Rui,
> > > > May we know your opinion if this patch set need merge patch2/3/4
> > > > 
> > > what do you mean? If you're okay with this, I will merge the full
> > > patch
> > > set.
> > > 
> > > thanks,
> > > rui
> > Hi Rui,
> > It's okay to me. Since we saw your comment "why bother change these
> > comments again in patch 3/4?", so I think you might suggest to merge
> > patch2/patch3/patch4 to one patch.
> > 
> I will take patch 2, 3 and 4 as separate patches.
> BTW, is it okay for me to add your Reviewed-by for all the patch
> series?
> 
> thanks,
> rui
> 
Hi Rui,
Yes, please add my Reviewed-by for all the patch series, thank you.

BR,
Dawei
> > 
> > > 
> > > > 
> > > > > 
> > > > > 
> > > > > > 
> > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > >  #define MT8173_CALIB_BUF0_VALID		BIT(0)
> > > > > > >  #define MT8173_CALIB_BUF1_ADC_GE(x)	(((x) >> 22) &
> > > > > > > 0x3ff)
> > > > > > > @@ -136,11 +138,26 @@
> > > > > > >  /* The total number of temperature sensors in the MT2701
> > > > > > > */
> > > > > > >  #define MT2701_NUM_SENSORS	3
> > > > > > >  
> > > > > > > -#define THERMAL_NAME    "mtk-thermal"
> > > > > > > -
> > > > > > >  /* The number of sensing points per bank */
> > > > > > >  #define MT2701_NUM_SENSORS_PER_ZONE	3
> > > > > > >  
> > > > > > > +/* MT2712 thermal sensors */
> > > > > > > +#define MT2712_TS1	0
> > > > > > > +#define MT2712_TS2	1
> > > > > > > +#define MT2712_TS3	2
> > > > > > > +#define MT2712_TS4	3
> > > > > > > +
> > > > > > > +/* AUXADC channel 11 is used for the temperature sensors
> > > > > > > */
> > > > > > > +#define MT2712_TEMP_AUXADC_CHANNEL	11
> > > > > > > +
> > > > > > > +/* The total number of temperature sensors in the MT2712
> > > > > > > */
> > > > > > > +#define MT2712_NUM_SENSORS	4
> > > > > > > +
> > > > > > > +/* The number of sensing points per bank */
> > > > > > > +#define MT2712_NUM_SENSORS_PER_ZONE	4
> > > > > > > +
> > > > > > > +#define THERMAL_NAME    "mtk-thermal"
> > > > > > > +
> > > > > > >  struct mtk_thermal;
> > > > > > >  
> > > > > > >  struct thermal_bank_cfg {
> > > > > > > @@ -215,6 +232,21 @@ struct mtk_thermal {
> > > > > > >  
> > > > > > >  static const int mt2701_mux_values[MT2701_NUM_SENSORS] = {
> > > > > > > 0,
> > > > > > > 1,
> > > > > > > 16
> > > > > > > };
> > > > > > >  
> > > > > > > +/* MT2712 thermal sensor data */
> > > > > > > +static const int mt2712_bank_data[MT2712_NUM_SENSORS] = {
> > > > > > > +	MT2712_TS1, MT2712_TS2, MT2712_TS3, MT2712_TS4
> > > > > > > +};
> > > > > > > +
> > > > > > > +static const int mt2712_msr[MT2712_NUM_SENSORS_PER_ZONE] =
> > > > > > > {
> > > > > > > +	TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
> > > > > > > +};
> > > > > > > +
> > > > > > > +static const int
> > > > > > > mt2712_adcpnp[MT2712_NUM_SENSORS_PER_ZONE] =
> > > > > > > {
> > > > > > > +	TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2,
> > > > > > > TEMP_ADCPNP3
> > > > > > > +};
> > > > > > > +
> > > > > > > +static const int mt2712_mux_values[MT2712_NUM_SENSORS] = {
> > > > > > > 0,
> > > > > > > 1,
> > > > > > > 2,
> > > > > > > 3 };
> > > > > > > +
> > > > > > >  /**
> > > > > > >   * The MT8173 thermal controller has four banks. Each bank
> > > > > > > can
> > > > > > > read
> > > > > > > up to
> > > > > > >   * four temperature sensors simultaneously. The MT8173 has
> > > > > > > a
> > > > > > > total
> > > > > > > of 5
> > > > > > > @@ -278,6 +310,31 @@ struct mtk_thermal {
> > > > > > >  };
> > > > > > >  
> > > > > > >  /**
> > > > > > > + * The MT2712 thermal controller has one bank, which can
> > > > > > > read
> > > > > > > up
> > > > > > > to
> > > > > > > + * four temperature sensors simultaneously. The MT2712 has
> > > > > > > a
> > > > > > > total
> > > > > > > of 4
> > > > > > > + * temperature sensors.
> > > > > > > + *
> > > > > > > + * The thermal core only gets the maximum temperature of
> > > > > > > this
> > > > > > > one
> > > > > > > bank,
> > > > > > > + * so the bank concept wouldn't be necessary here.
> > > > > > > However,
> > > > > > > the
> > > > > > > SVS
> > > > > > > (Smart
> > > > > > > + * Voltage Scaling) unit makes its decisions based on the
> > > > > > > same
> > > > > > > bank
> > > > > > > + * data.
> > > > > > > + */
> > > > > > > +static const struct mtk_thermal_data mt2712_thermal_data =
> > > > > > > {
> > > > > > > +	.auxadc_channel = MT2712_TEMP_AUXADC_CHANNEL,
> > > > > > > +	.num_banks = 1,
> > > > > > > +	.num_sensors = MT2712_NUM_SENSORS,
> > > > > > > +	.bank_data = {
> > > > > > > +		{
> > > > > > > +			.num_sensors = 4,
> > > > > > > +			.sensors = mt2712_bank_data,
> > > > > > > +		},
> > > > > > > +	},
> > > > > > > +	.msr = mt2712_msr,
> > > > > > > +	.adcpnp = mt2712_adcpnp,
> > > > > > > +	.sensor_mux_values = mt2712_mux_values,
> > > > > > > +};
> > > > > > > +
> > > > > > > +/**
> > > > > > >   * raw_to_mcelsius - convert a raw ADC value to mcelsius
> > > > > > >   * @mt:		The thermal controller
> > > > > > >   * @raw:	raw ADC value
> > > > > > > @@ -571,6 +628,10 @@ static int
> > > > > > > mtk_thermal_get_calibration_data(struct device *dev,
> > > > > > >  	{
> > > > > > >  		.compatible = "mediatek,mt2701-thermal",
> > > > > > >  		.data = (void *)&mt2701_thermal_data,
> > > > > > > +	},
> > > > > > > +	{
> > > > > > > +		.compatible = "mediatek,mt2712-thermal",
> > > > > > > +		.data = (void *)&mt2712_thermal_data,
> > > > > > >  	}, {
> > > > > > >  	},
> > > > > > >  };
> > > > > > > @@ -705,6 +766,7 @@ static int mtk_thermal_remove(struct
> > > > > > > platform_device *pdev)
> > > > > > >  
> > > > > > >  module_platform_driver(mtk_thermal_driver);
> > > > > > >  
> > > > > > > +MODULE_AUTHOR("Louis Yu <louis.yu@mediatek.com>");
> > > > > > >  MODULE_AUTHOR("Dawei Chien <dawei.chien@mediatek.com>");
> > > > > > >  MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
> > > > > > >  MODULE_AUTHOR("Hanyi Wu <hanyi.wu@mediatek.com>");
> >