[PATCH v5 3/5] nouveau_hwmon: Remove old code, add .write/.read operations

26 Apr 2017

This patch removes old code related to the old api and transforms the
functions for the new api. It also adds the .write and .read operations.
Signed-off-by: Oscar Salvador osalvador.vilardaga@gmail.com
---
 drivers/gpu/drm/nouveau/nouveau_hwmon.c | 722 +++++++++++---------------------
 1 file changed, 249 insertions(+), 473 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/drivers/gpu/drm/nouveau/nouveau_hwmon.c
index e8ea8d0..4db65fb 100644
--- a/drivers/gpu/drm/nouveau/nouveau_hwmon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_hwmon.c
@@ -38,21 +38,17 @@
 #include <nvkm/subdev/volt.h>
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
-static ssize_t
-nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_show_temp(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
    int temp = nvkm_therm_temp_get(therm);
if (temp < 0)
    	return temp;
-	return snprintf(buf, PAGE_SIZE, "%d\n", temp * 1000);
+	return (temp * 1000);
 }
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
-						  NULL, 0);
static ssize_t
 nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,
@@ -129,312 +125,100 @@ static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
    		  nouveau_hwmon_temp1_auto_point1_temp_hyst,
    		  nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0);
-static ssize_t
-nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	       therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK) * 1000);
-}
-static ssize_t
-nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
-						const char *buf, size_t count)
+static int
+nouveau_hwmon_max_temp(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK, value / 1000);
-
-	return count;
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK) * 1000;
 }
-static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
-						  nouveau_hwmon_set_max_temp,
-						  0);
-static ssize_t
-nouveau_hwmon_max_temp_hyst(struct device *d, struct device_attribute *a,
-			    char *buf)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	  therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST) * 1000);
-}
-static ssize_t
-nouveau_hwmon_set_max_temp_hyst(struct device *d, struct device_attribute *a,
-						const char *buf, size_t count)
+static int
+nouveau_hwmon_max_temp_hyst(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST,
-			value / 1000);
-
-	return count;
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST) * 1000;
 }
-static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
-			  nouveau_hwmon_max_temp_hyst,
-			  nouveau_hwmon_set_max_temp_hyst, 0);
-
-static ssize_t
-nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
-							char *buf)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	       therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL) * 1000);
-}
-static ssize_t
-nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
-							    const char *buf,
-								size_t count)
+static int
+nouveau_hwmon_critical_temp(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL, value / 1000);
-	return count;
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL) * 1000;
 }
-static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
-						nouveau_hwmon_critical_temp,
-						nouveau_hwmon_set_critical_temp,
-						0);
-static ssize_t
-nouveau_hwmon_critical_temp_hyst(struct device *d, struct device_attribute *a,
-							char *buf)
+static int
+nouveau_hwmon_critical_temp_hyst(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	  therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST) * 1000);
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST) * 1000;
 }
-static ssize_t
-nouveau_hwmon_set_critical_temp_hyst(struct device *d,
-				     struct device_attribute *a,
-				     const char *buf,
-				     size_t count)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST,
-			value / 1000);
-
-	return count;
-}
-static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO | S_IWUSR,
-			  nouveau_hwmon_critical_temp_hyst,
-			  nouveau_hwmon_set_critical_temp_hyst, 0);
-static ssize_t
-nouveau_hwmon_emergency_temp(struct device *d, struct device_attribute *a,
-							char *buf)
+static int
+nouveau_hwmon_emergency_temp(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	       therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN) * 1000);
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN) * 1000;
 }
-static ssize_t
-nouveau_hwmon_set_emergency_temp(struct device *d, struct device_attribute *a,
-							    const char *buf,
-								size_t count)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN, value / 1000);
-
-	return count;
-}
-static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO | S_IWUSR,
-					nouveau_hwmon_emergency_temp,
-					nouveau_hwmon_set_emergency_temp,
-					0);
-
-static ssize_t
-nouveau_hwmon_emergency_temp_hyst(struct device *d, struct device_attribute *a,
-							char *buf)
-{
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-	  therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST) * 1000);
-}
-static ssize_t
-nouveau_hwmon_set_emergency_temp_hyst(struct device *d,
-				      struct device_attribute *a,
-				      const char *buf,
-				      size_t count)
+static int
+nouveau_hwmon_emergency_temp_hyst(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return count;
-
-	therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST,
-			value / 1000);
-	return count;
-}
-static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO | S_IWUSR,
-					nouveau_hwmon_emergency_temp_hyst,
-					nouveau_hwmon_set_emergency_temp_hyst,
-					0);
-
-static ssize_t nouveau_hwmon_show_name(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
-{
-	return sprintf(buf, "nouveau\n");
+	return therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST) * 1000;
 }
-static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
-static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+static int
+nouveau_hwmon_show_update_rate(struct nouveau_drm *drm)
 {
-	return sprintf(buf, "1000\n");
+	return 1000;
 }
-static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
-						nouveau_hwmon_show_update_rate,
-						NULL, 0);
-static ssize_t
-nouveau_hwmon_show_fan1_input(struct device *d, struct device_attribute *attr,
-			      char *buf)
+static int
+nouveau_hwmon_show_fan1_input(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	return snprintf(buf, PAGE_SIZE, "%d\n", nvkm_therm_fan_sense(therm));
+	return nvkm_therm_fan_sense(therm);
 }
-static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, nouveau_hwmon_show_fan1_input,
-			  NULL, 0);
- static ssize_t
-nouveau_hwmon_get_pwm1_enable(struct device *d,
-			   struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_get_pwm1_enable(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	int ret;
-	ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);
-	if (ret < 0)
-		return ret;
-
-	return sprintf(buf, "%i\n", ret);
+	return therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);
 }
-static ssize_t
-nouveau_hwmon_set_pwm1_enable(struct device *d, struct device_attribute *a,
-			   const char *buf, size_t count)
+static int
+nouveau_hwmon_set_pwm1_enable(struct nouveau_drm *drm, long value)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	long value;
-	int ret;
-	ret = kstrtol(buf, 10, &value);
-	if (ret)
-		return ret;
-
-	ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, value);
-	if (ret)
-		return ret;
-	else
-		return count;
+	return therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, value);
 }
-static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
-			  nouveau_hwmon_get_pwm1_enable,
-			  nouveau_hwmon_set_pwm1_enable, 0);
-static ssize_t
-nouveau_hwmon_get_pwm1(struct device *d, struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_get_pwm1(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	int ret;
-
-	ret = therm->fan_get(therm);
-	if (ret < 0)
-		return ret;
-	return sprintf(buf, "%i\n", ret);
+	return therm->fan_get(therm);
 }
-static ssize_t
-nouveau_hwmon_set_pwm1(struct device *d, struct device_attribute *a,
-		       const char *buf, size_t count)
+static int
+nouveau_hwmon_set_pwm1(struct nouveau_drm *drm, long value)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	int ret = -ENODEV;
-	long value;
-
-	if (kstrtol(buf, 10, &value) == -EINVAL)
-		return -EINVAL;
-
-	ret = therm->fan_set(therm, value);
-	if (ret)
-		return ret;
-	return count;
+	return therm->fan_set(therm, value);
 }
-static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR,
-			  nouveau_hwmon_get_pwm1,
-			  nouveau_hwmon_set_pwm1, 0);
-
 static ssize_t
 nouveau_hwmon_get_pwm1_min(struct device *d,
    		   struct device_attribute *a, char *buf)
@@ -515,12 +299,9 @@ static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR,
    		  nouveau_hwmon_get_pwm1_max,
    		  nouveau_hwmon_set_pwm1_max, 0);
-static ssize_t
-nouveau_hwmon_get_in0_input(struct device *d,
-			    struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_get_in0_input(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
    int ret;
@@ -528,170 +309,54 @@ nouveau_hwmon_get_in0_input(struct device *d,
    if (ret < 0)
    	return ret;
-	return sprintf(buf, "%i\n", ret / 1000);
+	return (ret / 1000);
 }
-static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO,
-			  nouveau_hwmon_get_in0_input, NULL, 0);
-
-static ssize_t
-nouveau_hwmon_get_in0_min(struct device *d,
-			    struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_get_in0_min(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
if (!volt || !volt->min_uv)
    	return -ENODEV;
-	return sprintf(buf, "%i\n", volt->min_uv / 1000);
+	return (volt->min_uv / 1000);
 }
-static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO,
-			  nouveau_hwmon_get_in0_min, NULL, 0);
-
-static ssize_t
-nouveau_hwmon_get_in0_max(struct device *d,
-			    struct device_attribute *a, char *buf)
+static int
+nouveau_hwmon_get_in0_max(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
if (!volt || !volt->max_uv)
    	return -ENODEV;
-	return sprintf(buf, "%i\n", volt->max_uv / 1000);
-}
-
-static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO,
-			  nouveau_hwmon_get_in0_max, NULL, 0);
-
-static ssize_t
-nouveau_hwmon_get_in0_label(struct device *d,
-			    struct device_attribute *a, char *buf)
-{
-	return sprintf(buf, "GPU core\n");
+	return (volt->max_uv / 1000);
 }
-static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO,
-			  nouveau_hwmon_get_in0_label, NULL, 0);
-
-static ssize_t
-nouveau_hwmon_get_power1_input(struct device *d, struct device_attribute *a,
-			       char *buf)
+static int
+nouveau_hwmon_get_power1_input(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
-	int result = nvkm_iccsense_read_all(iccsense);
-	if (result < 0)
-		return result;
-
-	return sprintf(buf, "%i\n", result);
+	return nvkm_iccsense_read_all(iccsense);
 }
-static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO,
-			  nouveau_hwmon_get_power1_input, NULL, 0);
-
-static ssize_t
-nouveau_hwmon_get_power1_max(struct device *d, struct device_attribute *a,
-			     char *buf)
+static int
+nouveau_hwmon_get_power1_max(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
-	return sprintf(buf, "%i\n", iccsense->power_w_max);
-}
-static SENSOR_DEVICE_ATTR(power1_max, S_IRUGO,
-			  nouveau_hwmon_get_power1_max, NULL, 0);
+	return iccsense->power_w_max;
+}
-static ssize_t
-nouveau_hwmon_get_power1_crit(struct device *d, struct device_attribute *a,
-			      char *buf)
+static int
+nouveau_hwmon_get_power1_crit(struct nouveau_drm *drm)
 {
-	struct drm_device *dev = dev_get_drvdata(d);
-	struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
-	return sprintf(buf, "%i\n", iccsense->power_w_crit);
-}
-
-static SENSOR_DEVICE_ATTR(power1_crit, S_IRUGO,
-			  nouveau_hwmon_get_power1_crit, NULL, 0);
-
-static struct attribute *hwmon_default_attributes[] = {
-	&sensor_dev_attr_name.dev_attr.attr,
-	&sensor_dev_attr_update_rate.dev_attr.attr,
-	NULL
-};
-static struct attribute *hwmon_temp_attributes[] = {
-	&sensor_dev_attr_temp1_input.dev_attr.attr,
-	&sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,
-	&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
-	&sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp1_max.dev_attr.attr,
-	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp1_crit.dev_attr.attr,
-	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp1_emergency.dev_attr.attr,
-	&sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr,
-	NULL
-};
-static struct attribute *hwmon_fan_rpm_attributes[] = {
-	&sensor_dev_attr_fan1_input.dev_attr.attr,
-	NULL
-};
-static struct attribute *hwmon_pwm_fan_attributes[] = {
-	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
-	&sensor_dev_attr_pwm1.dev_attr.attr,
-	&sensor_dev_attr_pwm1_min.dev_attr.attr,
-	&sensor_dev_attr_pwm1_max.dev_attr.attr,
-	NULL
-};
-
-static struct attribute *hwmon_in0_attributes[] = {
-	&sensor_dev_attr_in0_input.dev_attr.attr,
-	&sensor_dev_attr_in0_min.dev_attr.attr,
-	&sensor_dev_attr_in0_max.dev_attr.attr,
-	&sensor_dev_attr_in0_label.dev_attr.attr,
-	NULL
-};
-static struct attribute *hwmon_power_attributes[] = {
-	&sensor_dev_attr_power1_input.dev_attr.attr,
-	NULL
-};
-
-static struct attribute *hwmon_power_caps_attributes[] = {
-	&sensor_dev_attr_power1_max.dev_attr.attr,
-	&sensor_dev_attr_power1_crit.dev_attr.attr,
-	NULL
-};
-
-static const struct attribute_group hwmon_default_attrgroup = {
-	.attrs = hwmon_default_attributes,
-};
-static const struct attribute_group hwmon_temp_attrgroup = {
-	.attrs = hwmon_temp_attributes,
-};
-static const struct attribute_group hwmon_fan_rpm_attrgroup = {
-	.attrs = hwmon_fan_rpm_attributes,
-};
-static const struct attribute_group hwmon_pwm_fan_attrgroup = {
-	.attrs = hwmon_pwm_fan_attributes,
-};
-static const struct attribute_group hwmon_in0_attrgroup = {
-	.attrs = hwmon_in0_attributes,
-};
-static const struct attribute_group hwmon_power_attrgroup = {
-	.attrs = hwmon_power_attributes,
-};
-static const struct attribute_group hwmon_power_caps_attrgroup = {
-	.attrs = hwmon_power_caps_attributes,
-};
+	return iccsense->power_w_crit;
+}
static const u32 nouveau_config_chip[] = {
    HWMON_C_UPDATE_INTERVAL,
@@ -887,6 +552,157 @@ nouveau_fan_is_visible(const void *data, u32 attr, int channel)
    }
 }
+static int
+nouveau_chip_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_chip_update_interval:
+		*val = nouveau_hwmon_show_update_rate(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_temp_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_temp_input:
+		*val = nouveau_hwmon_show_temp(drm);
+		break;
+	case hwmon_temp_max:
+		*val = nouveau_hwmon_max_temp(drm);
+		break;
+	case hwmon_temp_max_hyst:
+		*val = nouveau_hwmon_max_temp_hyst(drm);
+		break;
+	case hwmon_temp_crit:
+		*val = nouveau_hwmon_critical_temp(drm);
+		break;
+	case hwmon_temp_crit_hyst:
+		*val = nouveau_hwmon_critical_temp_hyst(drm);
+		break;
+	case hwmon_temp_emergency:
+		*val = nouveau_hwmon_emergency_temp(drm);
+		break;
+	case hwmon_temp_emergency_hyst:
+		*val = nouveau_hwmon_emergency_temp_hyst(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_fan_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_fan_input:
+		*val = nouveau_hwmon_show_fan1_input(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_in_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_in_input:
+		*val = nouveau_hwmon_get_in0_input(drm);
+		break;
+	case hwmon_in_min:
+		*val = nouveau_hwmon_get_in0_min(drm);
+		break;
+	case hwmon_in_max:
+		*val = nouveau_hwmon_get_in0_max(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_pwm_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_pwm_enable:
+		*val = nouveau_hwmon_get_pwm1_enable(drm);
+		break;
+	case hwmon_pwm_input:
+		*val = nouveau_hwmon_get_pwm1(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_power_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_power_input:
+		*val = nouveau_hwmon_get_power1_input(drm);
+		break;
+	case hwmon_power_max:
+		*val = nouveau_hwmon_get_power1_max(drm);
+		break;
+	case hwmon_power_crit:
+		*val = nouveau_hwmon_get_power1_crit(drm);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int
+nouveau_pwm_write(struct device *dev, u32 attr, int channel, long val)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+
+	switch (attr) {
+	case hwmon_pwm_input:
+		return nouveau_hwmon_set_pwm1(drm, val);
+	case hwmon_pwm_enable:
+		return nouveau_hwmon_set_pwm1_enable(drm, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
 static umode_t
 nouveau_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
    							int channel)
@@ -923,11 +739,45 @@ nouveau_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,
    return -EOPNOTSUPP;
 }
+static int
+nouveau_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+							int channel, long *val)
+{
+	switch (type) {
+	case hwmon_chip:
+		return nouveau_chip_read(dev, attr, channel, val);
+	case hwmon_temp:
+		return nouveau_temp_read(dev, attr, channel, val);
+	case hwmon_fan:
+		return nouveau_fan_read(dev, attr, channel, val);
+	case hwmon_in:
+		return nouveau_in_read(dev, attr, channel, val);
+	case hwmon_pwm:
+		return nouveau_pwm_read(dev, attr, channel, val);
+	case hwmon_power:
+		return nouveau_power_read(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int
+nouveau_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+							int channel, long val)
+{
+	switch (type) {
+	case hwmon_pwm:
+		return nouveau_pwm_write(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
 static const struct hwmon_ops nouveau_hwmon_ops = {
    .is_visible = nouveau_is_visible,
-	.read = NULL,
+	.read = nouveau_read,
    .read_string = nouveau_read_string,
-	.write = NULL,
+	.write = nouveau_write,
 };
static const struct hwmon_chip_info nouveau_chip_info = {
@@ -942,8 +792,6 @@ nouveau_hwmon_init(struct drm_device *dev)
 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
    struct nouveau_drm *drm = nouveau_drm(dev);
    struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
-	struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
-	struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
    struct nouveau_hwmon *hwmon;
    struct device *hwmon_dev;
    int ret = 0;
@@ -953,79 +801,16 @@ nouveau_hwmon_init(struct drm_device *dev)
    	return -ENOMEM;
    hwmon->dev = dev;
-	hwmon_dev = hwmon_device_register(dev->dev);
+	hwmon_dev = hwmon_device_register_with_info(dev->dev, "nouveau", dev,
+						&nouveau_chip_info, NULL);
    if (IS_ERR(hwmon_dev)) {
    	ret = PTR_ERR(hwmon_dev);
    	NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret);
    	return ret;
    }
-	dev_set_drvdata(hwmon_dev, dev);
-
-	/* set the default attributes */
-	ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup);
-	if (ret)
-		goto error;
-
-	if (therm && therm->attr_get && therm->attr_set) {
-		/* if the card has a working thermal sensor */
-		if (nvkm_therm_temp_get(therm) >= 0) {
-			ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup);
-			if (ret)
-				goto error;
-		}
-
-		/* if the card has a pwm fan */
-		/*XXX: incorrect, need better detection for this, some boards have
-		 *     the gpio entries for pwm fan control even when there's no
-		 *     actual fan connected to it... therm table? */
-		if (therm->fan_get && therm->fan_get(therm) >= 0) {
-			ret = sysfs_create_group(&hwmon_dev->kobj,
-						 &hwmon_pwm_fan_attrgroup);
-			if (ret)
-				goto error;
-		}
-	}
-
-	/* if the card can read the fan rpm */
-	if (therm && nvkm_therm_fan_sense(therm) >= 0) {
-		ret = sysfs_create_group(&hwmon_dev->kobj,
-					 &hwmon_fan_rpm_attrgroup);
-		if (ret)
-			goto error;
-	}
-
-	if (volt && nvkm_volt_get(volt) >= 0) {
-		ret = sysfs_create_group(&hwmon_dev->kobj,
-					 &hwmon_in0_attrgroup);
-
-		if (ret)
-			goto error;
-	}
-
-	if (iccsense && iccsense->data_valid && !list_empty(&iccsense->rails)) {
-		ret = sysfs_create_group(&hwmon_dev->kobj,
-					 &hwmon_power_attrgroup);
-
-		if (ret)
-			goto error;
-
-		if (iccsense->power_w_max && iccsense->power_w_crit) {
-			ret = sysfs_create_group(&hwmon_dev->kobj,
-						 &hwmon_power_caps_attrgroup);
-			if (ret)
-				goto error;
-		}
-	}
hwmon->hwmon = hwmon_dev;
-
    return 0;
-
-error:
-	NV_ERROR(drm, "Unable to create some hwmon sysfs files: %d\n", ret);
-	hwmon_device_unregister(hwmon_dev);
-	hwmon->hwmon = NULL;
-	return ret;
 #else
    return 0;
 #endif
@@ -1037,17 +822,8 @@ nouveau_hwmon_fini(struct drm_device *dev)
 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
    struct nouveau_hwmon *hwmon = nouveau_hwmon(dev);
-	if (hwmon->hwmon) {
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_default_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_temp_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_in0_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_power_attrgroup);
-		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_power_caps_attrgroup);
-
+	if (hwmon->hwmon)
    	hwmon_device_unregister(hwmon->hwmon);
-	}
nouveau_drm(dev)->hwmon = NULL;
    kfree(hwmon);
-- 
2.1.4


    

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[PATCH v5 3/5] nouveau_hwmon: Remove old code, add .write/.read operations