Re: [PATCH v2 6/9] thermal: rockchip: Support the RK3368 SoCs in thermal drivers

[Caesar Wang]

å 2015å11æ07æ 03:39, Andy Shevchenko åé:
> On Thu, Nov 5, 2015 at 7:18 AM, Caesar Wang <wxt@xxxxxxxxxxxxxx> wrote:
> > The RK3368 SoCs support to 2 channel TS-ADC, the temperature criteria
> > of each channel can be configurable.
> >
> > The system has two Temperature Sensors, channel 0 is for CPU,
> > and channel 1 is for GPU.
> >
> > Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>
> > ---
> >
> > Changes in v2:
> > - remove some unused, completed on other patchs.
> >
> > Changes in v1: None
> >
> >   drivers/thermal/rockchip_thermal.c | 72 ++++++++++++++++++++++++++++++++++++++
> >   1 file changed, 72 insertions(+)
> >
> > diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> > index 9df027f..47a8873 100644
> > --- a/drivers/thermal/rockchip_thermal.c
> > +++ b/drivers/thermal/rockchip_thermal.c
> > @@ -1,6 +1,9 @@
> >   /*
> >    * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
> >    *
> > + * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
> > + * Caesar Wang <wxt@xxxxxxxxxxxxxx>
> > + *
> >    * This program is free software; you can redistribute it and/or modify it
> >    * under the terms and conditions of the GNU General Public License,
> >    * version 2, as published by the Free Software Foundation.
> > @@ -152,6 +155,8 @@ struct rockchip_thermal_data {
> >   #define TSADCV2_INT_PD_CLEAR_MASK              ~BIT(8)
> >
> >   #define TSADCV2_DATA_MASK                      0xfff
> > +#define TSADCV3_DATA_MASK                      0x3ff
> > +
> >   #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT       4
> >   #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT     4
> >   #define TSADCV2_AUTO_PERIOD_TIME               250 /* msec */
> > @@ -200,6 +205,45 @@ static const struct tsadc_table v2_code_table[] = {
> >          {3421, 125000},
> >   };
> >
> > +static const struct tsadc_table v3_code_table[] = {
> > +       {0, -40000},
> > +       {106, -40000},
> > +       {108, -35000},
> > +       {110, -30000},
> > +       {112, -25000},
> > +       {114, -20000},
> > +       {116, -15000},
> > +       {118, -10000},
> > +       {120, -5000},
> > +       {122, 0},
> > +       {124, 5000},
> > +       {126, 10000},
> > +       {128, 15000},
> > +       {130, 20000},
> > +       {132, 25000},
> > +       {134, 30000},
> > +       {136, 35000},
> > +       {138, 40000},
> > +       {140, 45000},
> > +       {142, 50000},
> > +       {144, 55000},
> > +       {146, 60000},
> > +       {148, 65000},
> > +       {150, 70000},
> > +       {152, 75000},
> > +       {154, 80000},
> > +       {156, 85000},
> > +       {158, 90000},
> > +       {160, 95000},
> > +       {162, 100000},
> > +       {163, 105000},
> > +       {165, 110000},
> > +       {167, 115000},
> > +       {169, 120000},
> > +       {171, 125000},
> > +       {TSADCV3_DATA_MASK, 125000},
> Why not function which returns one value based on the other?
>
> x < 106:   -40000
> 161 >= x >= 106: -40000 + 5000 * (x - 106) / 2
> 171 >= x >= 162: 100000 + 5000 * (x - 162)
> x > 171 = 125000

1) Every SoCs conversion table come from the TRM.
2) Barrier for using with other SoCs

the rockchip-thermal driver  is compatible for series SoCs for rockchip.

> > +};
> > +
> >   static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
> >                                     long temp)
> >   {
> > @@ -408,11 +452,39 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
> >          },
> >   };
> >
> > +static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
> > +       .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
> > +       .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
> > +       .chn_num = 2, /* two channels for tsadc */
> > +
> > +       .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
> > +       .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
> > +       .tshut_temp = 95000,
> > +
> > +       .initialize = rk_tsadcv2_initialize,
> > +       .irq_ack = rk_tsadcv2_irq_ack,
> > +       .control = rk_tsadcv2_control,
> > +       .get_temp = rk_tsadcv2_get_temp,
> > +       .set_tshut_temp = rk_tsadcv2_tshut_temp,
> > +       .set_tshut_mode = rk_tsadcv2_tshut_mode,
> > +
> > +       .table = {
> > +               .id = v3_code_table,
> > +               .length = ARRAY_SIZE(v3_code_table),
> > +               .data_mask = TSADCV3_DATA_MASK,
> > +               .flag = ADC_DECREMENT,
> > +       },
> > +};
> > +
> >   static const struct of_device_id of_rockchip_thermal_match[] = {
> >          {
> >                  .compatible = "rockchip,rk3288-tsadc",
> >                  .data = (void *)&rk3288_tsadc_data,
> >          },
> > +       {
> > +               .compatible = "rockchip,rk3368-tsadc",
> > +               .data = (void *)&rk3368_tsadc_data,
> > +       },
> >          { /* end */ },
> >   };
> >   MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
> > --
> > 1.9.1
> >
> > --
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