summaryrefslogtreecommitdiff
path: root/drivers/thermal
diff options
context:
space:
mode:
authorYangtao Li <frank@allwinnertech.com>2020-11-09 14:46:24 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-11-12 13:05:12 +0300
commite01aac535353e013f9a5c9675232458906b895da (patch)
tree35cc167d71b7f60c9dbf612d6e5a33a594f5e926 /drivers/thermal
parentef63b043ac8645d2540d7b50dd3e09c53db3d504 (diff)
downloadlinux-e01aac535353e013f9a5c9675232458906b895da.tar.xz
thermal: sun8i: Use bitmap API instead of open code
The bitmap_* API is the standard way to access data in the bitfield. So convert irq_ack to return an unsigned long, and make things to use bitmap API. Signed-off-by: Yangtao Li <frank@allwinnertech.com> Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20201109114624.23035-1-frank@allwinnertech.com
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/sun8i_thermal.c33
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index f8b13071a6f4..8c80bd06dd9f 100644
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -8,6 +8,7 @@
* Based on the work of Josef Gajdusek <atx@atx.name>
*/
+#include <linux/bitmap.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/interrupt.h>
@@ -74,7 +75,7 @@ struct ths_thermal_chip {
int (*calibrate)(struct ths_device *tmdev,
u16 *caldata, int callen);
int (*init)(struct ths_device *tmdev);
- int (*irq_ack)(struct ths_device *tmdev);
+ unsigned long (*irq_ack)(struct ths_device *tmdev);
int (*calc_temp)(struct ths_device *tmdev,
int id, int reg);
};
@@ -146,9 +147,10 @@ static const struct regmap_config config = {
.max_register = 0xfc,
};
-static int sun8i_h3_irq_ack(struct ths_device *tmdev)
+static unsigned long sun8i_h3_irq_ack(struct ths_device *tmdev)
{
- int i, state, ret = 0;
+ unsigned long irq_bitmap = 0;
+ int i, state;
regmap_read(tmdev->regmap, SUN8I_THS_IS, &state);
@@ -156,16 +158,17 @@ static int sun8i_h3_irq_ack(struct ths_device *tmdev)
if (state & SUN8I_THS_DATA_IRQ_STS(i)) {
regmap_write(tmdev->regmap, SUN8I_THS_IS,
SUN8I_THS_DATA_IRQ_STS(i));
- ret |= BIT(i);
+ bitmap_set(&irq_bitmap, i, 1);
}
}
- return ret;
+ return irq_bitmap;
}
-static int sun50i_h6_irq_ack(struct ths_device *tmdev)
+static unsigned long sun50i_h6_irq_ack(struct ths_device *tmdev)
{
- int i, state, ret = 0;
+ unsigned long irq_bitmap = 0;
+ int i, state;
regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);
@@ -173,24 +176,22 @@ static int sun50i_h6_irq_ack(struct ths_device *tmdev)
if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
SUN50I_H6_THS_DATA_IRQ_STS(i));
- ret |= BIT(i);
+ bitmap_set(&irq_bitmap, i, 1);
}
}
- return ret;
+ return irq_bitmap;
}
static irqreturn_t sun8i_irq_thread(int irq, void *data)
{
struct ths_device *tmdev = data;
- int i, state;
-
- state = tmdev->chip->irq_ack(tmdev);
+ unsigned long irq_bitmap = tmdev->chip->irq_ack(tmdev);
+ int i;
- for (i = 0; i < tmdev->chip->sensor_num; i++) {
- if (state & BIT(i))
- thermal_zone_device_update(tmdev->sensor[i].tzd,
- THERMAL_EVENT_UNSPECIFIED);
+ for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) {
+ thermal_zone_device_update(tmdev->sensor[i].tzd,
+ THERMAL_EVENT_UNSPECIFIED);
}
return IRQ_HANDLED;