Hi Rocky,
? 2017?08?24? 18:27, Rocky Hao ??:
> RV1108 SOC has one Temperature Sensor for CPU.
>
> Signed-off-by: Rocky Hao <rocky.hao at rock-chips.com>
> ---
> drivers/thermal/rockchip_thermal.c | 67 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 67 insertions(+)
>
> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> index 9da3e1819210..299a8ade71fa 100644
> --- a/drivers/thermal/rockchip_thermal.c
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -242,6 +242,45 @@ struct tsadc_table {
> int temp;
> };
>
> +static const struct tsadc_table rv1108_table[] = {
> + {0, -40000},
> + {374, -40000},
> + {382, -35000},
> + {389, -30000},
> + {397, -25000},
> + {405, -20000},
> + {413, -15000},
> + {421, -10000},
> + {429, -5000},
> + {436, 0},
> + {444, 5000},
> + {452, 10000},
> + {460, 15000},
> + {468, 20000},
> + {476, 25000},
> + {483, 30000},
> + {491, 35000},
> + {499, 40000},
> + {507, 45000},
> + {515, 50000},
> + {523, 55000},
> + {531, 60000},
> + {539, 65000},
> + {547, 70000},
> + {555, 75000},
> + {562, 80000},
> + {570, 85000},
> + {578, 90000},
> + {586, 95000},
> + {594, 100000},
> + {602, 105000},
> + {610, 110000},
> + {618, 115000},
> + {626, 120000},
> + {634, 125000},
> + {TSADCV2_DATA_MASK, 125000},
> +};
> +
From the RV1108 TRM said, this table was used for the negative
temperature coefficient.
But the default table is positive temperature coefficient, why?
I think you don't need to use the negative temperature coefficient.
> static const struct tsadc_table rk3228_code_table[] = {
> {0, -40000},
> {588, -40000},
> @@ -779,6 +818,30 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
> writel_relaxed(val, regs + TSADCV2_INT_EN);
> }
>
> +static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
> + .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
> + .chn_num = 1, /* one channel 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_tsadcv3_irq_ack,
> + .control = rk_tsadcv3_control,
If you will use the positive temperature coefficient, we need change it.
.control = rk_tsadcv2_control,
> + .get_temp = rk_tsadcv2_get_temp,
> + .set_alarm_temp = rk_tsadcv2_alarm_temp,
> + .set_tshut_temp = rk_tsadcv2_tshut_temp,
> + .set_tshut_mode = rk_tsadcv2_tshut_mode,
> +
> + .table = {
> + .id = rv1108_table,
> + .length = ARRAY_SIZE(rv1108_table),
> + .data_mask = TSADCV2_DATA_MASK,
> + .mode = ADC_INCREMENT,
Ditto
-Caesar
> + },
> +};
> +
> static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
> .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
> .chn_num = 1, /* one channel for tsadc */
> @@ -928,6 +991,10 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
>
> static const struct of_device_id of_rockchip_thermal_match[] = {
> {
> + .compatible = "rockchip,rv1108-tsadc",
> + .data = (void *)&rv1108_tsadc_data,
> + },
> + {
> .compatible = "rockchip,rk3228-tsadc",
> .data = (void *)&rk3228_tsadc_data,
> },
