thermal: rockchip: handle set_trips without the trip points

In some cases, some sensors didn't need the trip points, the
set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm in the end,
ignore this case and disable the high temperature interrupt.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index cacc12b44ca15f9cfa66952d76c4703b36a3ccec..cbbf0ce2302c1b9825f1b99e1bd59e0ae16ca6ed 100644 (file)
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -674,7 +674,21 @@ static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
 static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
                                 int chn, void __iomem *regs, int temp)
 {
-       u32 alarm_value, int_en;
+       u32 alarm_value;
+       u32 int_en, int_clr;
+
+       /*
+        * In some cases, some sensors didn't need the trip points, the
+        * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm
+        * in the end, ignore this case and disable the high temperature
+        * interrupt.
+        */
+       if (temp == INT_MAX) {
+               int_clr = readl_relaxed(regs + TSADCV2_INT_EN);
+               int_clr &= ~TSADCV2_INT_SRC_EN(chn);
+               writel_relaxed(int_clr, regs + TSADCV2_INT_EN);
+               return 0;
+       }
 
        /* Make sure the value is valid */
        alarm_value = rk_tsadcv2_temp_to_code(table, temp);