| Message ID | 1479818088-6007-6-git-send-email-wxt@rock-chips.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Delegated to: | Eduardo Valentin |
| Headers | show |
On Tue, Nov 22, 2016 at 08:34:48PM +0800, Caesar Wang wrote: > In some cases, some sensors didn't need the trip points, the > set_trips will return {-INT_MAX, INT_MAX} to trigger thermal alarm. > > Signed-off-by: Caesar Wang <wxt@rock-chips.com> > --- > > drivers/thermal/rockchip_thermal.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c > index f4d4be9..5b9c346 100644 > --- a/drivers/thermal/rockchip_thermal.c > +++ b/drivers/thermal/rockchip_thermal.c > @@ -200,6 +200,7 @@ struct rockchip_thermal_data { > #define TSADCV3_AUTO_Q_SEL_EN BIT(1) > > #define TSADCV2_INT_SRC_EN(chn) BIT(chn) > +#define TSADCV2_INT_SRC_SHIFT(chn) chn > #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) > #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) > > @@ -903,10 +904,22 @@ static int rockchip_thermal_set_trips(void *_sensor, int low, int high) > struct rockchip_thermal_sensor *sensor = _sensor; > struct rockchip_thermal_data *thermal = sensor->thermal; > const struct rockchip_tsadc_chip *tsadc = thermal->chip; > + u32 int_clr; > > dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n", > __func__, sensor->id, low, high); > > + /* > + * In some cases, some sensors didn't need the trip points, the > + * set_trips will return {-INT_MAX, INT_MAX} to trigger thermal alarm. This language is a little unclear. AFAICT, set_trips is not "returning" those values, it's "passing" them as arguments. > + */ > + if (high == INT_MAX) { > + int_clr = readl_relaxed(thermal->regs + TSADCV2_INT_EN); > + int_clr |= 0 << TSADCV2_INT_SRC_SHIFT(sensor->id); Uhh, really? This line is a no-op; you're just OR'ing a value of zero... It also seems like this should use the existing shift macro, TSADCV2_INT_SRC_EN(). So: int_clr &= ~TSADCV2_INT_SRC_EN(sensor->id); > + writel_relaxed(int_clr, thermal->regs + TSADCV2_INT_EN); > + return 0; > + } > + > tsadc->set_alarm_temp(&tsadc->table, > sensor->id, thermal->regs, high); Given that you have a level of indirection here for ->set_alarm_temp(), it seems like you should not be doing the above register programming directly in this function; it should either go in the ->set_alarm_temp() callback, or in a new callback like ->disable_alarm(). Brian > > -- > 2.7.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c index f4d4be9..5b9c346 100644 --- a/drivers/thermal/rockchip_thermal.c +++ b/drivers/thermal/rockchip_thermal.c @@ -200,6 +200,7 @@ struct rockchip_thermal_data { #define TSADCV3_AUTO_Q_SEL_EN BIT(1) #define TSADCV2_INT_SRC_EN(chn) BIT(chn) +#define TSADCV2_INT_SRC_SHIFT(chn) chn #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) @@ -903,10 +904,22 @@ static int rockchip_thermal_set_trips(void *_sensor, int low, int high) struct rockchip_thermal_sensor *sensor = _sensor; struct rockchip_thermal_data *thermal = sensor->thermal; const struct rockchip_tsadc_chip *tsadc = thermal->chip; + u32 int_clr; dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n", __func__, sensor->id, low, high); + /* + * In some cases, some sensors didn't need the trip points, the + * set_trips will return {-INT_MAX, INT_MAX} to trigger thermal alarm. + */ + if (high == INT_MAX) { + int_clr = readl_relaxed(thermal->regs + TSADCV2_INT_EN); + int_clr |= 0 << TSADCV2_INT_SRC_SHIFT(sensor->id); + writel_relaxed(int_clr, thermal->regs + TSADCV2_INT_EN); + return 0; + } + tsadc->set_alarm_temp(&tsadc->table, sensor->id, thermal->regs, high);
In some cases, some sensors didn't need the trip points, the set_trips will return {-INT_MAX, INT_MAX} to trigger thermal alarm. Signed-off-by: Caesar Wang <wxt@rock-chips.com> --- drivers/thermal/rockchip_thermal.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)