[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / nouveau / nouveau_pm.c

/*
 * Copyright 2010 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */

#include "drmP.h"

#include "nouveau_drv.h"
#include "nouveau_pm.h"

#ifdef CONFIG_ACPI
#include <linux/acpi.h>
#endif
#include <linux/power_supply.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>

static int
nouveau_pm_clock_set(struct drm_device *dev, struct nouveau_pm_level *perflvl,
		     u8 id, u32 khz)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	void *pre_state;

	if (khz == 0)
		return 0;

	pre_state = pm->clock_pre(dev, perflvl, id, khz);
	if (IS_ERR(pre_state))
		return PTR_ERR(pre_state);

	if (pre_state)
		pm->clock_set(dev, pre_state);
	return 0;
}

static int
nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	int ret;

	if (perflvl == pm->cur)
		return 0;

	if (pm->voltage.supported && pm->voltage_set && perflvl->voltage) {
		ret = pm->voltage_set(dev, perflvl->voltage);
		if (ret) {
			NV_ERROR(dev, "voltage_set %d failed: %d\n",
				 perflvl->voltage, ret);
		}
	}

	nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
	nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
	nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
	nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);

	pm->cur = perflvl;
	return 0;
}

static int
nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_level *perflvl = NULL;

	/* safety precaution, for now */
	if (nouveau_perflvl_wr != 7777)
		return -EPERM;

	if (!pm->clock_set)
		return -EINVAL;

	if (!strncmp(profile, "boot", 4))
		perflvl = &pm->boot;
	else {
		int pl = simple_strtol(profile, NULL, 10);
		int i;

		for (i = 0; i < pm->nr_perflvl; i++) {
			if (pm->perflvl[i].id == pl) {
				perflvl = &pm->perflvl[i];
				break;
			}
		}

		if (!perflvl)
			return -EINVAL;
	}

	NV_INFO(dev, "setting performance level: %s\n", profile);
	return nouveau_pm_perflvl_set(dev, perflvl);
}

static int
nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	int ret;

	if (!pm->clock_get)
		return -EINVAL;

	memset(perflvl, 0, sizeof(*perflvl));

	ret = pm->clock_get(dev, PLL_CORE);
	if (ret > 0)
		perflvl->core = ret;

	ret = pm->clock_get(dev, PLL_MEMORY);
	if (ret > 0)
		perflvl->memory = ret;

	ret = pm->clock_get(dev, PLL_SHADER);
	if (ret > 0)
		perflvl->shader = ret;

	ret = pm->clock_get(dev, PLL_UNK05);
	if (ret > 0)
		perflvl->unk05 = ret;

	if (pm->voltage.supported && pm->voltage_get) {
		ret = pm->voltage_get(dev);
		if (ret > 0)
			perflvl->voltage = ret;
	}

	return 0;
}

static void
nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
{
	char c[16], s[16], v[16], f[16], t[16];

	c[0] = '\0';
	if (perflvl->core)
		snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);

	s[0] = '\0';
	if (perflvl->shader)
		snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);

	v[0] = '\0';
	if (perflvl->voltage)
		snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage / 1000);

	f[0] = '\0';
	if (perflvl->fanspeed)
		snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);

	t[0] = '\0';
	if (perflvl->timing)
		snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);

	snprintf(ptr, len, "memory %dMHz%s%s%s%s%s\n", perflvl->memory / 1000,
		 c, s, v, f, t);
}

static ssize_t
nouveau_pm_get_perflvl_info(struct device *d,
			    struct device_attribute *a, char *buf)
{
	struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
	char *ptr = buf;
	int len = PAGE_SIZE;

	snprintf(ptr, len, "%d: ", perflvl->id);
	ptr += strlen(buf);
	len -= strlen(buf);

	nouveau_pm_perflvl_info(perflvl, ptr, len);
	return strlen(buf);
}

static ssize_t
nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
{
	struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_level cur;
	int len = PAGE_SIZE, ret;
	char *ptr = buf;

	if (!pm->cur)
		snprintf(ptr, len, "setting: boot\n");
	else if (pm->cur == &pm->boot)
		snprintf(ptr, len, "setting: boot\nc: ");
	else
		snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id);
	ptr += strlen(buf);
	len -= strlen(buf);

	ret = nouveau_pm_perflvl_get(dev, &cur);
	if (ret == 0)
		nouveau_pm_perflvl_info(&cur, ptr, len);
	return strlen(buf);
}

static ssize_t
nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
		       const char *buf, size_t count)
{
	struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
	int ret;

	ret = nouveau_pm_profile_set(dev, buf);
	if (ret)
		return ret;
	return strlen(buf);
}

static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
		   nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);

static int
nouveau_sysfs_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct device *d = &dev->pdev->dev;
	int ret, i;

	ret = device_create_file(d, &dev_attr_performance_level);
	if (ret)
		return ret;

	for (i = 0; i < pm->nr_perflvl; i++) {
		struct nouveau_pm_level *perflvl = &pm->perflvl[i];

		perflvl->dev_attr.attr.name = perflvl->name;
		perflvl->dev_attr.attr.mode = S_IRUGO;
		perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
		perflvl->dev_attr.store = NULL;
		sysfs_attr_init(&perflvl->dev_attr.attr);

		ret = device_create_file(d, &perflvl->dev_attr);
		if (ret) {
			NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
				 perflvl->id, i);
			perflvl->dev_attr.attr.name = NULL;
			nouveau_pm_fini(dev);
			return ret;
		}
	}

	return 0;
}

static void
nouveau_sysfs_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct device *d = &dev->pdev->dev;
	int i;

	device_remove_file(d, &dev_attr_performance_level);
	for (i = 0; i < pm->nr_perflvl; i++) {
		struct nouveau_pm_level *pl = &pm->perflvl[i];

		if (!pl->dev_attr.attr.name)
			break;

		device_remove_file(d, &pl->dev_attr);
	}
}

#ifdef CONFIG_HWMON
static ssize_t
nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
{
	struct drm_device *dev = dev_get_drvdata(d);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
}
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
						  NULL, 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 drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;

	return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
}
static ssize_t
nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
						const char *buf, size_t count)
{
	struct drm_device *dev = dev_get_drvdata(d);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	long value;

	if (strict_strtol(buf, 10, &value) == -EINVAL)
		return count;

	temp->down_clock = value/1000;

	nouveau_temp_safety_checks(dev);

	return count;
}
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_critical_temp(struct device *d, struct device_attribute *a,
							char *buf)
{
	struct drm_device *dev = dev_get_drvdata(d);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;

	return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
}
static ssize_t
nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
							    const char *buf,
								size_t count)
{
	struct drm_device *dev = dev_get_drvdata(d);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	long value;

	if (strict_strtol(buf, 10, &value) == -EINVAL)
		return count;

	temp->critical = value/1000;

	nouveau_temp_safety_checks(dev);

	return count;
}
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_show_name(struct device *dev,
				      struct device_attribute *attr,
				      char *buf)
{
	return sprintf(buf, "nouveau\n");
}
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)
{
	return sprintf(buf, "1000\n");
}
static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
						nouveau_hwmon_show_update_rate,
						NULL, 0);

static struct attribute *hwmon_attributes[] = {
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	&sensor_dev_attr_name.dev_attr.attr,
	&sensor_dev_attr_update_rate.dev_attr.attr,
	NULL
};

static const struct attribute_group hwmon_attrgroup = {
	.attrs = hwmon_attributes,
};
#endif

static int
nouveau_hwmon_init(struct drm_device *dev)
{
#ifdef CONFIG_HWMON
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct device *hwmon_dev;
	int ret;

	if (!pm->temp_get)
		return -ENODEV;

	hwmon_dev = hwmon_device_register(&dev->pdev->dev);
	if (IS_ERR(hwmon_dev)) {
		ret = PTR_ERR(hwmon_dev);
		NV_ERROR(dev,
			"Unable to register hwmon device: %d\n", ret);
		return ret;
	}
	dev_set_drvdata(hwmon_dev, dev);
	ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
	if (ret) {
		NV_ERROR(dev,
			"Unable to create hwmon sysfs file: %d\n", ret);
		hwmon_device_unregister(hwmon_dev);
		return ret;
	}

	pm->hwmon = hwmon_dev;
#endif
	return 0;
}

static void
nouveau_hwmon_fini(struct drm_device *dev)
{
#ifdef CONFIG_HWMON
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	if (pm->hwmon) {
		sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
		hwmon_device_unregister(pm->hwmon);
	}
#endif
}

#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
static int
nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
{
	struct drm_nouveau_private *dev_priv =
		container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
	struct drm_device *dev = dev_priv->dev;
	struct acpi_bus_event *entry = (struct acpi_bus_event *)data;

	if (strcmp(entry->device_class, "ac_adapter") == 0) {
		bool ac = power_supply_is_system_supplied();

		NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
	}

	return NOTIFY_OK;
}
#endif

int
nouveau_pm_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	char info[256];
	int ret, i;

	nouveau_mem_timing_init(dev);
	nouveau_volt_init(dev);
	nouveau_perf_init(dev);
	nouveau_temp_init(dev);

	NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
	for (i = 0; i < pm->nr_perflvl; i++) {
		nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
		NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);
	}

	/* determine current ("boot") performance level */
	ret = nouveau_pm_perflvl_get(dev, &pm->boot);
	if (ret == 0) {
		strncpy(pm->boot.name, "boot", 4);
		pm->cur = &pm->boot;

		nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
		NV_INFO(dev, "c: %s", info);
	}

	/* switch performance levels now if requested */
	if (nouveau_perflvl != NULL) {
		ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
		if (ret) {
			NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
				 nouveau_perflvl, ret);
		}
	}

	nouveau_sysfs_init(dev);
	nouveau_hwmon_init(dev);
#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
	pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
	register_acpi_notifier(&pm->acpi_nb);
#endif

	return 0;
}

void
nouveau_pm_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	if (pm->cur != &pm->boot)
		nouveau_pm_perflvl_set(dev, &pm->boot);

	nouveau_temp_fini(dev);
	nouveau_perf_fini(dev);
	nouveau_volt_fini(dev);
	nouveau_mem_timing_fini(dev);

#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
	unregister_acpi_notifier(&pm->acpi_nb);
#endif
	nouveau_hwmon_fini(dev);
	nouveau_sysfs_fini(dev);
}

void
nouveau_pm_resume(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_level *perflvl;

	if (!pm->cur || pm->cur == &pm->boot)
		return;

	perflvl = pm->cur;
	pm->cur = &pm->boot;
	nouveau_pm_perflvl_set(dev, perflvl);
}
Commit	Line	Data
330c5988 BS	1	/*
	2	* Copyright 2010 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs
	23	*/
	24
	25	#include "drmP.h"
	26
	27	#include "nouveau_drv.h"
	28	#include "nouveau_pm.h"
	29
6032649d BS	30	#ifdef CONFIG_ACPI
	31	#include <linux/acpi.h>
	32	#endif
	33	#include <linux/power_supply.h>
34e9d85a MP	34	#include <linux/hwmon.h>
	35	#include <linux/hwmon-sysfs.h>
	36
6f876986	37	static int
5c6dc657 BS	38	nouveau_pm_clock_set(struct drm_device dev, struct nouveau_pm_level perflvl,
5c6dc657 BS	39	u8 id, u32 khz)
6f876986 BS	40	{
	41	struct drm_nouveau_private *dev_priv = dev->dev_private;
	42	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	43	void *pre_state;
	44
	45	if (khz == 0)
	46	return 0;
	47
5c6dc657	48	pre_state = pm->clock_pre(dev, perflvl, id, khz);
6f876986 BS	49	if (IS_ERR(pre_state))
	50	return PTR_ERR(pre_state);
	51
	52	if (pre_state)
	53	pm->clock_set(dev, pre_state);
	54	return 0;
	55	}
	56
64f1c11a BS	57	static int
	58	nouveau_pm_perflvl_set(struct drm_device dev, struct nouveau_pm_level perflvl)
	59	{
	60	struct drm_nouveau_private *dev_priv = dev->dev_private;
	61	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	62	int ret;
	63
	64	if (perflvl == pm->cur)
	65	return 0;
	66
	67	if (pm->voltage.supported && pm->voltage_set && perflvl->voltage) {
	68	ret = pm->voltage_set(dev, perflvl->voltage);
	69	if (ret) {
	70	NV_ERROR(dev, "voltage_set %d failed: %d\n",
	71	perflvl->voltage, ret);
	72	}
	73	}
	74
5c6dc657 BS	75	nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
	76	nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
	77	nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
	78	nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
64f1c11a BS	79
	80	pm->cur = perflvl;
	81	return 0;
	82	}
	83
6f876986 BS	84	static int
	85	nouveau_pm_profile_set(struct drm_device dev, const char profile)
	86	{
	87	struct drm_nouveau_private *dev_priv = dev->dev_private;
	88	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	89	struct nouveau_pm_level *perflvl = NULL;
6f876986 BS	90
	91	/* safety precaution, for now */
	92	if (nouveau_perflvl_wr != 7777)
	93	return -EPERM;
	94
	95	if (!pm->clock_set)
	96	return -EINVAL;
	97
	98	if (!strncmp(profile, "boot", 4))
	99	perflvl = &pm->boot;
	100	else {
	101	int pl = simple_strtol(profile, NULL, 10);
	102	int i;
	103
	104	for (i = 0; i < pm->nr_perflvl; i++) {
	105	if (pm->perflvl[i].id == pl) {
	106	perflvl = &pm->perflvl[i];
	107	break;
	108	}
	109	}
	110
	111	if (!perflvl)
	112	return -EINVAL;
	113	}
	114
6f876986	115	NV_INFO(dev, "setting performance level: %s\n", profile);
64f1c11a	116	return nouveau_pm_perflvl_set(dev, perflvl);
6f876986 BS	117	}
6f876986 BS	118
330c5988 BS	119	static int
	120	nouveau_pm_perflvl_get(struct drm_device dev, struct nouveau_pm_level perflvl)
	121	{
	122	struct drm_nouveau_private *dev_priv = dev->dev_private;
	123	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	124	int ret;
	125
	126	if (!pm->clock_get)
	127	return -EINVAL;
	128
	129	memset(perflvl, 0, sizeof(*perflvl));
	130
	131	ret = pm->clock_get(dev, PLL_CORE);
	132	if (ret > 0)
	133	perflvl->core = ret;
	134
	135	ret = pm->clock_get(dev, PLL_MEMORY);
	136	if (ret > 0)
	137	perflvl->memory = ret;
	138
	139	ret = pm->clock_get(dev, PLL_SHADER);
	140	if (ret > 0)
	141	perflvl->shader = ret;
	142
	143	ret = pm->clock_get(dev, PLL_UNK05);
	144	if (ret > 0)
	145	perflvl->unk05 = ret;
	146
	147	if (pm->voltage.supported && pm->voltage_get) {
	148	ret = pm->voltage_get(dev);
	149	if (ret > 0)
	150	perflvl->voltage = ret;
	151	}
	152
	153	return 0;
	154	}
	155
	156	static void
	157	nouveau_pm_perflvl_info(struct nouveau_pm_level perflvl, char ptr, int len)
	158	{
e614b2e7	159	char c[16], s[16], v[16], f[16], t[16];
0fbb114a FJ	160
	161	c[0] = '\0';
	162	if (perflvl->core)
	163	snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
330c5988 BS	164
	165	s[0] = '\0';
	166	if (perflvl->shader)
	167	snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
	168
	169	v[0] = '\0';
	170	if (perflvl->voltage)
c3450239	171	snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage / 1000);
330c5988 BS	172
	173	f[0] = '\0';
	174	if (perflvl->fanspeed)
	175	snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
	176
e614b2e7 MP	177	t[0] = '\0';
	178	if (perflvl->timing)
	179	snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);
	180
	181	snprintf(ptr, len, "memory %dMHz%s%s%s%s%s\n", perflvl->memory / 1000,
	182	c, s, v, f, t);
330c5988 BS	183	}
	184
	185	static ssize_t
	186	nouveau_pm_get_perflvl_info(struct device *d,
	187	struct device_attribute a, char buf)
	188	{
	189	struct nouveau_pm_level perflvl = (struct nouveau_pm_level )a;
	190	char *ptr = buf;
	191	int len = PAGE_SIZE;
	192
	193	snprintf(ptr, len, "%d: ", perflvl->id);
	194	ptr += strlen(buf);
	195	len -= strlen(buf);
	196
	197	nouveau_pm_perflvl_info(perflvl, ptr, len);
	198	return strlen(buf);
	199	}
	200
	201	static ssize_t
	202	nouveau_pm_get_perflvl(struct device d, struct device_attribute a, char *buf)
	203	{
34e9d85a	204	struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
330c5988 BS	205	struct drm_nouveau_private *dev_priv = dev->dev_private;
	206	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	207	struct nouveau_pm_level cur;
	208	int len = PAGE_SIZE, ret;
	209	char *ptr = buf;
	210
	211	if (!pm->cur)
	212	snprintf(ptr, len, "setting: boot\n");
	213	else if (pm->cur == &pm->boot)
	214	snprintf(ptr, len, "setting: boot\nc: ");
	215	else
	216	snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id);
	217	ptr += strlen(buf);
	218	len -= strlen(buf);
	219
	220	ret = nouveau_pm_perflvl_get(dev, &cur);
	221	if (ret == 0)
	222	nouveau_pm_perflvl_info(&cur, ptr, len);
	223	return strlen(buf);
	224	}
	225
	226	static ssize_t
	227	nouveau_pm_set_perflvl(struct device d, struct device_attribute a,
	228	const char *buf, size_t count)
	229	{
34e9d85a	230	struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
6f876986 BS	231	int ret;
	232
	233	ret = nouveau_pm_profile_set(dev, buf);
	234	if (ret)
	235	return ret;
	236	return strlen(buf);
330c5988 BS	237	}
330c5988 BS	238
5c4abd09 FJ	239	static DEVICE_ATTR(performance_level, S_IRUGO \| S_IWUSR,
5c4abd09 FJ	240	nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
330c5988	241
34e9d85a MP	242	static int
34e9d85a MP	243	nouveau_sysfs_init(struct drm_device *dev)
330c5988 BS	244	{
	245	struct drm_nouveau_private *dev_priv = dev->dev_private;
	246	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	247	struct device *d = &dev->pdev->dev;
330c5988 BS	248	int ret, i;
330c5988 BS	249
330c5988 BS	250	ret = device_create_file(d, &dev_attr_performance_level);
	251	if (ret)
	252	return ret;
	253
	254	for (i = 0; i < pm->nr_perflvl; i++) {
	255	struct nouveau_pm_level *perflvl = &pm->perflvl[i];
	256
	257	perflvl->dev_attr.attr.name = perflvl->name;
	258	perflvl->dev_attr.attr.mode = S_IRUGO;
	259	perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
	260	perflvl->dev_attr.store = NULL;
	261	sysfs_attr_init(&perflvl->dev_attr.attr);
	262
	263	ret = device_create_file(d, &perflvl->dev_attr);
	264	if (ret) {
	265	NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
	266	perflvl->id, i);
	267	perflvl->dev_attr.attr.name = NULL;
	268	nouveau_pm_fini(dev);
	269	return ret;
	270	}
	271	}
	272
	273	return 0;
	274	}
	275
34e9d85a MP	276	static void
34e9d85a MP	277	nouveau_sysfs_fini(struct drm_device *dev)
330c5988 BS	278	{
	279	struct drm_nouveau_private *dev_priv = dev->dev_private;
	280	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	281	struct device *d = &dev->pdev->dev;
	282	int i;
	283
	284	device_remove_file(d, &dev_attr_performance_level);
	285	for (i = 0; i < pm->nr_perflvl; i++) {
	286	struct nouveau_pm_level *pl = &pm->perflvl[i];
	287
	288	if (!pl->dev_attr.attr.name)
	289	break;
	290
	291	device_remove_file(d, &pl->dev_attr);
	292	}
34e9d85a MP	293	}
34e9d85a MP	294
b54262f3	295	#ifdef CONFIG_HWMON
34e9d85a MP	296	static ssize_t
	297	nouveau_hwmon_show_temp(struct device d, struct device_attribute a, char *buf)
	298	{
	299	struct drm_device *dev = dev_get_drvdata(d);
8155cac4 FJ	300	struct drm_nouveau_private *dev_priv = dev->dev_private;
8155cac4 FJ	301	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
34e9d85a	302
8155cac4	303	return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
34e9d85a MP	304	}
	305	static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
	306	NULL, 0);
	307
	308	static ssize_t
	309	nouveau_hwmon_max_temp(struct device d, struct device_attribute a, char *buf)
	310	{
	311	struct drm_device *dev = dev_get_drvdata(d);
	312	struct drm_nouveau_private *dev_priv = dev->dev_private;
	313	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	314	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	315
	316	return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
	317	}
	318	static ssize_t
	319	nouveau_hwmon_set_max_temp(struct device d, struct device_attribute a,
	320	const char *buf, size_t count)
	321	{
	322	struct drm_device *dev = dev_get_drvdata(d);
	323	struct drm_nouveau_private *dev_priv = dev->dev_private;
	324	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	325	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	326	long value;
	327
5c4abd09	328	if (strict_strtol(buf, 10, &value) == -EINVAL)
34e9d85a MP	329	return count;
	330
	331	temp->down_clock = value/1000;
	332
	333	nouveau_temp_safety_checks(dev);
	334
	335	return count;
	336	}
	337	static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO \| S_IWUSR, nouveau_hwmon_max_temp,
	338	nouveau_hwmon_set_max_temp,
	339	0);
	340
	341	static ssize_t
	342	nouveau_hwmon_critical_temp(struct device d, struct device_attribute a,
	343	char *buf)
	344	{
	345	struct drm_device *dev = dev_get_drvdata(d);
	346	struct drm_nouveau_private *dev_priv = dev->dev_private;
	347	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	348	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	349
	350	return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
	351	}
	352	static ssize_t
	353	nouveau_hwmon_set_critical_temp(struct device d, struct device_attribute a,
	354	const char *buf,
	355	size_t count)
	356	{
	357	struct drm_device *dev = dev_get_drvdata(d);
	358	struct drm_nouveau_private *dev_priv = dev->dev_private;
	359	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	360	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
	361	long value;
	362
5c4abd09	363	if (strict_strtol(buf, 10, &value) == -EINVAL)
34e9d85a MP	364	return count;
	365
	366	temp->critical = value/1000;
	367
	368	nouveau_temp_safety_checks(dev);
	369
	370	return count;
	371	}
	372	static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO \| S_IWUSR,
	373	nouveau_hwmon_critical_temp,
	374	nouveau_hwmon_set_critical_temp,
	375	0);
	376
	377	static ssize_t nouveau_hwmon_show_name(struct device *dev,
	378	struct device_attribute *attr,
	379	char *buf)
	380	{
	381	return sprintf(buf, "nouveau\n");
	382	}
	383	static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
	384
	385	static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
	386	struct device_attribute *attr,
	387	char *buf)
	388	{
	389	return sprintf(buf, "1000\n");
	390	}
	391	static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
	392	nouveau_hwmon_show_update_rate,
	393	NULL, 0);
	394
	395	static struct attribute *hwmon_attributes[] = {
	396	&sensor_dev_attr_temp1_input.dev_attr.attr,
	397	&sensor_dev_attr_temp1_max.dev_attr.attr,
	398	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	399	&sensor_dev_attr_name.dev_attr.attr,
	400	&sensor_dev_attr_update_rate.dev_attr.attr,
	401	NULL
	402	};
	403
	404	static const struct attribute_group hwmon_attrgroup = {
	405	.attrs = hwmon_attributes,
	406	};
b54262f3	407	#endif
34e9d85a MP	408
	409	static int
	410	nouveau_hwmon_init(struct drm_device *dev)
	411	{
b54262f3	412	#ifdef CONFIG_HWMON
34e9d85a	413	struct drm_nouveau_private *dev_priv = dev->dev_private;
8155cac4	414	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
34e9d85a MP	415	struct device *hwmon_dev;
	416	int ret;
	417
8155cac4 FJ	418	if (!pm->temp_get)
8155cac4 FJ	419	return -ENODEV;
34e9d85a MP	420
	421	hwmon_dev = hwmon_device_register(&dev->pdev->dev);
	422	if (IS_ERR(hwmon_dev)) {
	423	ret = PTR_ERR(hwmon_dev);
	424	NV_ERROR(dev,
	425	"Unable to register hwmon device: %d\n", ret);
	426	return ret;
	427	}
	428	dev_set_drvdata(hwmon_dev, dev);
07cfe0e7	429	ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
34e9d85a MP	430	if (ret) {
	431	NV_ERROR(dev,
	432	"Unable to create hwmon sysfs file: %d\n", ret);
	433	hwmon_device_unregister(hwmon_dev);
	434	return ret;
	435	}
	436
8155cac4	437	pm->hwmon = hwmon_dev;
b54262f3	438	#endif
34e9d85a MP	439	return 0;
	440	}
	441
	442	static void
	443	nouveau_hwmon_fini(struct drm_device *dev)
	444	{
b54262f3	445	#ifdef CONFIG_HWMON
34e9d85a	446	struct drm_nouveau_private *dev_priv = dev->dev_private;
8155cac4	447	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
34e9d85a	448
8155cac4	449	if (pm->hwmon) {
8c06a3e0	450	sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
8155cac4	451	hwmon_device_unregister(pm->hwmon);
34e9d85a	452	}
b54262f3	453	#endif
34e9d85a MP	454	}
34e9d85a MP	455
1f962797	456	#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
6032649d BS	457	static int
	458	nouveau_pm_acpi_event(struct notifier_block nb, unsigned long val, void data)
	459	{
	460	struct drm_nouveau_private *dev_priv =
	461	container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
	462	struct drm_device *dev = dev_priv->dev;
	463	struct acpi_bus_event entry = (struct acpi_bus_event )data;
	464
	465	if (strcmp(entry->device_class, "ac_adapter") == 0) {
	466	bool ac = power_supply_is_system_supplied();
	467
	468	NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
	469	}
	470
	471	return NOTIFY_OK;
	472	}
	473	#endif
	474
34e9d85a MP	475	int
	476	nouveau_pm_init(struct drm_device *dev)
	477	{
	478	struct drm_nouveau_private *dev_priv = dev->dev_private;
	479	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	480	char info[256];
	481	int ret, i;
	482
e614b2e7	483	nouveau_mem_timing_init(dev);
34e9d85a MP	484	nouveau_volt_init(dev);
	485	nouveau_perf_init(dev);
	486	nouveau_temp_init(dev);
	487
	488	NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
	489	for (i = 0; i < pm->nr_perflvl; i++) {
	490	nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
	491	NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);
	492	}
	493
	494	/* determine current ("boot") performance level */
	495	ret = nouveau_pm_perflvl_get(dev, &pm->boot);
	496	if (ret == 0) {
01e542c6	497	strncpy(pm->boot.name, "boot", 4);
34e9d85a MP	498	pm->cur = &pm->boot;
	499
	500	nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
	501	NV_INFO(dev, "c: %s", info);
	502	}
	503
	504	/* switch performance levels now if requested */
	505	if (nouveau_perflvl != NULL) {
	506	ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
	507	if (ret) {
	508	NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
	509	nouveau_perflvl, ret);
	510	}
	511	}
	512
	513	nouveau_sysfs_init(dev);
	514	nouveau_hwmon_init(dev);
1f962797	515	#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
6032649d BS	516	pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
	517	register_acpi_notifier(&pm->acpi_nb);
	518	#endif
34e9d85a MP	519
	520	return 0;
	521	}
	522
	523	void
	524	nouveau_pm_fini(struct drm_device *dev)
	525	{
	526	struct drm_nouveau_private *dev_priv = dev->dev_private;
	527	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	528
	529	if (pm->cur != &pm->boot)
	530	nouveau_pm_perflvl_set(dev, &pm->boot);
330c5988	531
7760fcb0	532	nouveau_temp_fini(dev);
330c5988 BS	533	nouveau_perf_fini(dev);
330c5988 BS	534	nouveau_volt_fini(dev);
e614b2e7	535	nouveau_mem_timing_fini(dev);
34e9d85a	536
1f962797	537	#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
6032649d BS	538	unregister_acpi_notifier(&pm->acpi_nb);
6032649d BS	539	#endif
34e9d85a MP	540	nouveau_hwmon_fini(dev);
34e9d85a MP	541	nouveau_sysfs_fini(dev);
330c5988 BS	542	}
330c5988 BS	543
64f1c11a BS	544	void
	545	nouveau_pm_resume(struct drm_device *dev)
	546	{
	547	struct drm_nouveau_private *dev_priv = dev->dev_private;
	548	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	549	struct nouveau_pm_level *perflvl;
	550
317495b2	551	if (!pm->cur \|\| pm->cur == &pm->boot)
64f1c11a BS	552	return;
	553
	554	perflvl = pm->cur;
	555	pm->cur = &pm->boot;
	556	nouveau_pm_perflvl_set(dev, perflvl);
	557	}