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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2024-05-28 22:21:34 +0200
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2024-05-28 22:21:34 +0200
commitf73a058be5d70dd81a43f16b2bbff4b1576a7af8 (patch)
treeb7959c01cf7a5d95c7c4d5b61929ff9123370322 /drivers/hwmon/pwm-fan.c
parentdma-buf: handle testing kthreads creation failure (diff)
parentMerge tag 'drm-misc-fixes-2024-05-23' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes (diff)
downloadwireguard-linux-f73a058be5d70dd81a43f16b2bbff4b1576a7af8.tar.xz
wireguard-linux-f73a058be5d70dd81a43f16b2bbff4b1576a7af8.zip
Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes
v6.10-rc1 is released, forward from v6.9 Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/hwmon/pwm-fan.c')
-rw-r--r--drivers/hwmon/pwm-fan.c45
1 files changed, 26 insertions, 19 deletions
diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index b67bc9e833c0..a1712649b07e 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -9,10 +9,11 @@
#include <linux/hwmon.h>
#include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/mutex.h>
-#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/pwm.h>
#include <linux/regulator/consumer.h>
#include <linux/sysfs.h>
@@ -25,7 +26,6 @@ struct pwm_fan_tach {
int irq;
atomic_t pulses;
unsigned int rpm;
- u8 pulses_per_revolution;
};
enum pwm_fan_enable_mode {
@@ -48,6 +48,7 @@ struct pwm_fan_ctx {
int tach_count;
struct pwm_fan_tach *tachs;
+ u32 *pulses_per_revolution;
ktime_t sample_start;
struct timer_list rpm_timer;
@@ -85,7 +86,7 @@ static void sample_timer(struct timer_list *t)
pulses = atomic_read(&tach->pulses);
atomic_sub(pulses, &tach->pulses);
tach->rpm = (unsigned int)(pulses * 1000 * 60) /
- (tach->pulses_per_revolution * delta);
+ (ctx->pulses_per_revolution[i] * delta);
}
ctx->sample_start = ktime_get();
@@ -421,16 +422,14 @@ static const struct thermal_cooling_device_ops pwm_fan_cooling_ops = {
.set_cur_state = pwm_fan_set_cur_state,
};
-static int pwm_fan_of_get_cooling_data(struct device *dev,
- struct pwm_fan_ctx *ctx)
+static int pwm_fan_get_cooling_data(struct device *dev, struct pwm_fan_ctx *ctx)
{
- struct device_node *np = dev->of_node;
int num, i, ret;
- if (!of_property_present(np, "cooling-levels"))
+ if (!device_property_present(dev, "cooling-levels"))
return 0;
- ret = of_property_count_u32_elems(np, "cooling-levels");
+ ret = device_property_count_u32(dev, "cooling-levels");
if (ret <= 0) {
dev_err(dev, "Wrong data!\n");
return ret ? : -EINVAL;
@@ -442,8 +441,8 @@ static int pwm_fan_of_get_cooling_data(struct device *dev,
if (!ctx->pwm_fan_cooling_levels)
return -ENOMEM;
- ret = of_property_read_u32_array(np, "cooling-levels",
- ctx->pwm_fan_cooling_levels, num);
+ ret = device_property_read_u32_array(dev, "cooling-levels",
+ ctx->pwm_fan_cooling_levels, num);
if (ret) {
dev_err(dev, "Property 'cooling-levels' cannot be read!\n");
return ret;
@@ -562,6 +561,20 @@ static int pwm_fan_probe(struct platform_device *pdev)
if (!fan_channel_config)
return -ENOMEM;
ctx->fan_channel.config = fan_channel_config;
+
+ ctx->pulses_per_revolution = devm_kmalloc_array(dev,
+ ctx->tach_count,
+ sizeof(*ctx->pulses_per_revolution),
+ GFP_KERNEL);
+ if (!ctx->pulses_per_revolution)
+ return -ENOMEM;
+
+ /* Setup default pulses per revolution */
+ for (i = 0; i < ctx->tach_count; i++)
+ ctx->pulses_per_revolution[i] = 2;
+
+ device_property_read_u32_array(dev, "pulses-per-revolution",
+ ctx->pulses_per_revolution, ctx->tach_count);
}
channels = devm_kcalloc(dev, channel_count + 1,
@@ -573,7 +586,6 @@ static int pwm_fan_probe(struct platform_device *pdev)
for (i = 0; i < ctx->tach_count; i++) {
struct pwm_fan_tach *tach = &ctx->tachs[i];
- u32 ppr = 2;
tach->irq = platform_get_irq(pdev, i);
if (tach->irq == -EPROBE_DEFER)
@@ -589,12 +601,7 @@ static int pwm_fan_probe(struct platform_device *pdev)
}
}
- of_property_read_u32_index(dev->of_node,
- "pulses-per-revolution",
- i,
- &ppr);
- tach->pulses_per_revolution = ppr;
- if (!tach->pulses_per_revolution) {
+ if (!ctx->pulses_per_revolution[i]) {
dev_err(dev, "pulses-per-revolution can't be zero.\n");
return -EINVAL;
}
@@ -602,7 +609,7 @@ static int pwm_fan_probe(struct platform_device *pdev)
fan_channel_config[i] = HWMON_F_INPUT;
dev_dbg(dev, "tach%d: irq=%d, pulses_per_revolution=%d\n",
- i, tach->irq, tach->pulses_per_revolution);
+ i, tach->irq, ctx->pulses_per_revolution[i]);
}
if (ctx->tach_count > 0) {
@@ -622,7 +629,7 @@ static int pwm_fan_probe(struct platform_device *pdev)
return PTR_ERR(hwmon);
}
- ret = pwm_fan_of_get_cooling_data(dev, ctx);
+ ret = pwm_fan_get_cooling_data(dev, ctx);
if (ret)
return ret;