[PATCH v5 07/18] thermal: sun8i: rework for ths irq handler func

[Yangtao Li]

Here, we do something to prepare for the subsequent
support of multiple platforms.

1) rename sun50i_h6_irq_thread to sun8i_irq_thread, because
   this function should be suitable for all platforms.

2) introduce irq_ack callback to mask interrupt register
   differences.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
---
 drivers/thermal/sun8i_thermal.c | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index ad877b54f58e..b934bc81eba7 100644
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -60,6 +60,7 @@ struct ths_thermal_chip {
        int             ft_deviation;
        int             temp_data_base;
        int             (*init)(struct ths_device *tmdev);
+       int             (*irq_ack)(struct ths_device *tmdev);
 };
 
 struct ths_device {
@@ -116,23 +117,34 @@ static const struct regmap_config config = {
        .fast_io = true,
 };
 
-static irqreturn_t sun50i_h6_irq_thread(int irq, void *data)
+static int sun50i_h6_irq_ack(struct ths_device *tmdev)
 {
-       struct ths_device *tmdev = data;
-       int i, state;
+       int i, state, ret = 0;
 
        regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);
 
        for (i = 0; i < tmdev->chip->sensor_num; i++) {
-
                if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
-                       /* clear data irq pending */
                        regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
                                     SUN50I_H6_THS_DATA_IRQ_STS(i));
+                       ret |= BIT(i);
+               }
+       }
+
+       return ret;
+}
 
+static irqreturn_t sun8i_irq_thread(int irq, void *data)
+{
+       struct ths_device *tmdev = data;
+       int i, state;
+
+       state = tmdev->chip->irq_ack(tmdev);
+
+       for (i = 0; i < tmdev->chip->sensor_num; i++) {
+               if (state & BIT(i))
                        thermal_zone_device_update(tmdev->sensor[i].tzd,
                                                   THERMAL_EVENT_UNSPECIFIED);
-               }
        }
 
        return IRQ_HANDLED;
@@ -371,7 +383,7 @@ static int sun8i_ths_probe(struct platform_device *pdev)
         * the end.
         */
        ret = devm_request_threaded_irq(dev, irq, NULL,
-                                       sun50i_h6_irq_thread,
+                                       sun8i_irq_thread,
                                        IRQF_ONESHOT, "ths", tmdev);
        if (ret)
                return ret;
@@ -396,6 +408,7 @@ static const struct ths_thermal_chip sun50i_h6_ths = {
        .ft_deviation = SUN50I_H6_FT_DEVIATION,
        .temp_data_base = SUN50I_H6_THS_TEMP_DATA,
        .init = sun50i_h6_thermal_init,
+       .irq_ack = sun50i_h6_irq_ack,
 };
 
 static const struct of_device_id of_ths_match[] = {
-- 
2.17.1