Hi Rocky,
在 2017年08月24日 18:27, Rocky Hao 写道:
RV1108 SOC has one Temperature Sensor for CPU.
Signed-off-by: Rocky Hao <rocky.hao@xxxxxxxxxxxxxx>
---
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,
},
--
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