brintos

brintos / linux-shallow public Read only

0
0
Text · 33.1 KiB · d00409b Raw
1029 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * hwmon driver for NZXT Kraken X53/X63/X73, Z53/Z63/Z73 and 2023/2023 Elite all in one coolers.4 * X53 and Z53 in code refer to all models in their respective series (shortened for brevity).5 * 2023 models use the Z53 code paths.6 *7 * Copyright 2021  Jonas Malaco <jonas@protocubo.io>8 * Copyright 2022  Aleksa Savic <savicaleksa83@gmail.com>9 */10 11#include <linux/debugfs.h>12#include <linux/hid.h>13#include <linux/hwmon.h>14#include <linux/hwmon-sysfs.h>15#include <linux/jiffies.h>16#include <linux/module.h>17#include <linux/mutex.h>18#include <linux/spinlock.h>19#include <linux/wait.h>20#include <linux/unaligned.h>21 22#define USB_VENDOR_ID_NZXT		0x1e7123#define USB_PRODUCT_ID_X53		0x200724#define USB_PRODUCT_ID_X53_SECOND	0x201425#define USB_PRODUCT_ID_Z53		0x300826#define USB_PRODUCT_ID_KRAKEN2023	0x300E27#define USB_PRODUCT_ID_KRAKEN2023_ELITE	0x300C28 29enum kinds { X53, Z53, KRAKEN2023 } __packed;30enum pwm_enable { off, manual, curve } __packed;31 32#define DRIVER_NAME		"nzxt_kraken3"33#define STATUS_REPORT_ID	0x7534#define FIRMWARE_REPORT_ID	0x1135#define STATUS_VALIDITY		2000	/* In ms, equivalent to period of four status reports */36#define CUSTOM_CURVE_POINTS	40	/* For temps from 20C to 59C (critical temp) */37#define PUMP_DUTY_MIN		20	/* In percent */38 39/* Sensor report offsets for Kraken X53 and Z53 */40#define TEMP_SENSOR_START_OFFSET	1541#define TEMP_SENSOR_END_OFFSET		1642#define PUMP_SPEED_OFFSET		1743#define PUMP_DUTY_OFFSET		1944 45/* Firmware version report offset for Kraken X53 and Z53 */46#define FIRMWARE_VERSION_OFFSET		1747 48/* Sensor report offsets for Kraken Z53 */49#define Z53_FAN_SPEED_OFFSET		2350#define Z53_FAN_DUTY_OFFSET		2551 52/* Report offsets for control commands for Kraken X53 and Z53 */53#define SET_DUTY_ID_OFFSET		154 55/* Control commands and their lengths for Kraken X53 and Z53 */56 57/* Last byte sets the report interval at 0.5s */58static const u8 set_interval_cmd[] = { 0x70, 0x02, 0x01, 0xB8, 1 };59static const u8 finish_init_cmd[] = { 0x70, 0x01 };60static const u8 __maybe_unused get_fw_version_cmd[] = { 0x10, 0x01 };61static const u8 set_pump_duty_cmd_header[] = { 0x72, 0x00, 0x00, 0x00 };62static const u8 z53_get_status_cmd[] = { 0x74, 0x01 };63 64#define SET_INTERVAL_CMD_LENGTH			565#define FINISH_INIT_CMD_LENGTH			266#define GET_FW_VERSION_CMD_LENGTH		267#define MAX_REPORT_LENGTH			6468#define MIN_REPORT_LENGTH			2069#define SET_CURVE_DUTY_CMD_HEADER_LENGTH	470/* 4 byte header and 40 duty offsets */71#define SET_CURVE_DUTY_CMD_LENGTH		(4 + 40)72#define Z53_GET_STATUS_CMD_LENGTH		273 74static const char *const kraken3_temp_label[] = {75	"Coolant temp",76};77 78static const char *const kraken3_fan_label[] = {79	"Pump speed",80	"Fan speed"81};82 83struct kraken3_channel_info {84	enum pwm_enable mode;85 86	/* Both values are PWM */87	u16 reported_duty;88	u16 fixed_duty;		/* Manually set fixed duty */89 90	u8 pwm_points[CUSTOM_CURVE_POINTS];91};92 93struct kraken3_data {94	struct hid_device *hdev;95	struct device *hwmon_dev;96	struct dentry *debugfs;97	struct mutex buffer_lock;	/* For locking access to buffer */98	struct mutex z53_status_request_lock;99	struct completion fw_version_processed;100	/*101	 * For X53 devices, tracks whether an initial (one) sensor report was received to102	 * make fancontrol not bail outright. For Z53 devices, whether a status report103	 * was processed after requesting one.104	 */105	struct completion status_report_processed;106	/* For locking the above completion */107	spinlock_t status_completion_lock;108 109	u8 *buffer;110	struct kraken3_channel_info channel_info[2];	/* Pump and fan */111	bool is_device_faulty;112 113	/* Sensor values */114	s32 temp_input[1];115	u16 fan_input[2];116 117	enum kinds kind;118	u8 firmware_version[3];119 120	unsigned long updated;	/* jiffies */121};122 123static umode_t kraken3_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,124				  int channel)125{126	const struct kraken3_data *priv = data;127 128	switch (type) {129	case hwmon_temp:130		if (channel < 1)131			return 0444;132		break;133	case hwmon_fan:134		switch (priv->kind) {135		case X53:136			/* Just the pump */137			if (channel < 1)138				return 0444;139			break;140		case Z53:141		case KRAKEN2023:142			/* Pump and fan */143			if (channel < 2)144				return 0444;145			break;146		default:147			break;148		}149		break;150	case hwmon_pwm:151		switch (attr) {152		case hwmon_pwm_enable:153		case hwmon_pwm_input:154			switch (priv->kind) {155			case X53:156				/* Just the pump */157				if (channel < 1)158					return 0644;159				break;160			case Z53:161			case KRAKEN2023:162				/* Pump and fan */163				if (channel < 2)164					return 0644;165				break;166			default:167				break;168			}169			break;170		default:171			break;172		}173		break;174	default:175		break;176	}177 178	return 0;179}180 181/*182 * Writes the command to the device with the rest of the report (up to 64 bytes) filled183 * with zeroes.184 */185static int kraken3_write_expanded(struct kraken3_data *priv, const u8 *cmd, int cmd_length)186{187	int ret;188 189	mutex_lock(&priv->buffer_lock);190 191	memcpy_and_pad(priv->buffer, MAX_REPORT_LENGTH, cmd, cmd_length, 0x00);192	ret = hid_hw_output_report(priv->hdev, priv->buffer, MAX_REPORT_LENGTH);193 194	mutex_unlock(&priv->buffer_lock);195	return ret;196}197 198static int kraken3_percent_to_pwm(long val)199{200	return DIV_ROUND_CLOSEST(val * 255, 100);201}202 203static int kraken3_pwm_to_percent(long val, int channel)204{205	int percent_value;206 207	if (val < 0 || val > 255)208		return -EINVAL;209 210	percent_value = DIV_ROUND_CLOSEST(val * 100, 255);211 212	/* Bring up pump duty to min value if needed */213	if (channel == 0 && percent_value < PUMP_DUTY_MIN)214		percent_value = PUMP_DUTY_MIN;215 216	return percent_value;217}218 219static int kraken3_read_x53(struct kraken3_data *priv)220{221	int ret;222 223	if (completion_done(&priv->status_report_processed))224		/*225		 * We're here because data is stale. This means that sensor reports haven't226		 * been received for some time in kraken3_raw_event(). On X-series sensor data227		 * can't be manually requested, so return an error.228		 */229		return -ENODATA;230 231	/*232	 * Data needs to be read, but a sensor report wasn't yet received. It's usually233	 * fancontrol that requests data this early and it exits if it reads an error code.234	 * So, wait for the first report to be parsed (but up to STATUS_VALIDITY).235	 * This does not concern the Z series devices, because they send a sensor report236	 * only when requested.237	 */238	ret = wait_for_completion_interruptible_timeout(&priv->status_report_processed,239							msecs_to_jiffies(STATUS_VALIDITY));240	if (ret == 0)241		return -ETIMEDOUT;242	else if (ret < 0)243		return ret;244 245	/* The first sensor report was parsed on time and reading can continue */246	return 0;247}248 249/* Covers Z53 and KRAKEN2023 device kinds */250static int kraken3_read_z53(struct kraken3_data *priv)251{252	int ret = mutex_lock_interruptible(&priv->z53_status_request_lock);253 254	if (ret < 0)255		return ret;256 257	if (!time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) {258		/* Data is up to date */259		goto unlock_and_return;260	}261 262	/*263	 * Disable interrupts for a moment to safely reinit the completion,264	 * as hidraw calls could have allowed one or more readers to complete.265	 */266	spin_lock_bh(&priv->status_completion_lock);267	reinit_completion(&priv->status_report_processed);268	spin_unlock_bh(&priv->status_completion_lock);269 270	/* Send command for getting status */271	ret = kraken3_write_expanded(priv, z53_get_status_cmd, Z53_GET_STATUS_CMD_LENGTH);272	if (ret < 0)273		goto unlock_and_return;274 275	/* Wait for completion from kraken3_raw_event() */276	ret = wait_for_completion_interruptible_timeout(&priv->status_report_processed,277							msecs_to_jiffies(STATUS_VALIDITY));278	if (ret == 0)279		ret = -ETIMEDOUT;280 281unlock_and_return:282	mutex_unlock(&priv->z53_status_request_lock);283	if (ret < 0)284		return ret;285 286	return 0;287}288 289static int kraken3_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel,290			long *val)291{292	struct kraken3_data *priv = dev_get_drvdata(dev);293	int ret;294 295	if (time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) {296		if (priv->kind == X53)297			ret = kraken3_read_x53(priv);298		else299			ret = kraken3_read_z53(priv);300 301		if (ret < 0)302			return ret;303 304		if (priv->is_device_faulty)305			return -ENODATA;306	}307 308	switch (type) {309	case hwmon_temp:310		*val = priv->temp_input[channel];311		break;312	case hwmon_fan:313		*val = priv->fan_input[channel];314		break;315	case hwmon_pwm:316		switch (attr) {317		case hwmon_pwm_enable:318			*val = priv->channel_info[channel].mode;319			break;320		case hwmon_pwm_input:321			*val = priv->channel_info[channel].reported_duty;322			break;323		default:324			return -EOPNOTSUPP;325		}326		break;327	default:328		return -EOPNOTSUPP;329	}330 331	return 0;332}333 334static int kraken3_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,335			       int channel, const char **str)336{337	switch (type) {338	case hwmon_temp:339		*str = kraken3_temp_label[channel];340		break;341	case hwmon_fan:342		*str = kraken3_fan_label[channel];343		break;344	default:345		return -EOPNOTSUPP;346	}347 348	return 0;349}350 351/* Writes custom curve to device */352static int kraken3_write_curve(struct kraken3_data *priv, u8 *curve_array, int channel)353{354	u8 fixed_duty_cmd[SET_CURVE_DUTY_CMD_LENGTH];355	int ret;356 357	/* Copy command header */358	memcpy(fixed_duty_cmd, set_pump_duty_cmd_header, SET_CURVE_DUTY_CMD_HEADER_LENGTH);359 360	/* Set the correct ID for writing pump/fan duty (0x01 or 0x02, respectively) */361	fixed_duty_cmd[SET_DUTY_ID_OFFSET] = channel + 1;362 363	if (priv->kind == KRAKEN2023) {364		/* These require 1s in the next one or two slots after SET_DUTY_ID_OFFSET */365		fixed_duty_cmd[SET_DUTY_ID_OFFSET + 1] = 1;366		if (channel == 1) /* Fan */367			fixed_duty_cmd[SET_DUTY_ID_OFFSET + 2] = 1;368	}369 370	/* Copy curve to command */371	memcpy(fixed_duty_cmd + SET_CURVE_DUTY_CMD_HEADER_LENGTH, curve_array, CUSTOM_CURVE_POINTS);372 373	ret = kraken3_write_expanded(priv, fixed_duty_cmd, SET_CURVE_DUTY_CMD_LENGTH);374	return ret;375}376 377static int kraken3_write_fixed_duty(struct kraken3_data *priv, long val, int channel)378{379	u8 fixed_curve_points[CUSTOM_CURVE_POINTS];380	int ret, percent_val, i;381 382	percent_val = kraken3_pwm_to_percent(val, channel);383	if (percent_val < 0)384		return percent_val;385 386	/*387	 * The devices can only control the duty through a curve.388	 * Since we're setting a fixed duty here, fill the whole curve389	 * (ranging from 20C to 59C) with the same duty, except for390	 * the last point, the critical temperature, where it's maxed391	 * out for safety.392	 */393 394	/* Fill the custom curve with the fixed value we're setting */395	for (i = 0; i < CUSTOM_CURVE_POINTS - 1; i++)396		fixed_curve_points[i] = percent_val;397 398	/* Force duty to 100% at critical temp */399	fixed_curve_points[CUSTOM_CURVE_POINTS - 1] = 100;400 401	/* Write the fixed duty curve to the device */402	ret = kraken3_write_curve(priv, fixed_curve_points, channel);403	return ret;404}405 406static int kraken3_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel,407			 long val)408{409	struct kraken3_data *priv = dev_get_drvdata(dev);410	int ret;411 412	switch (type) {413	case hwmon_pwm:414		switch (attr) {415		case hwmon_pwm_input:416			/* Remember the last set fixed duty for channel */417			priv->channel_info[channel].fixed_duty = val;418 419			if (priv->channel_info[channel].mode == manual) {420				ret = kraken3_write_fixed_duty(priv, val, channel);421				if (ret < 0)422					return ret;423 424				/*425				 * Lock onto this value and report it until next interrupt status426				 * report is received, so userspace tools can continue to work.427				 */428				priv->channel_info[channel].reported_duty = val;429			}430			break;431		case hwmon_pwm_enable:432			if (val < 0 || val > 2)433				return -EINVAL;434 435			switch (val) {436			case 0:437				/* Set channel to 100%, direct duty value */438				ret = kraken3_write_fixed_duty(priv, 255, channel);439				if (ret < 0)440					return ret;441 442				/* We don't control anything anymore */443				priv->channel_info[channel].mode = off;444				break;445			case 1:446				/* Apply the last known direct duty value */447				ret =448				    kraken3_write_fixed_duty(priv,449							     priv->channel_info[channel].fixed_duty,450							     channel);451				if (ret < 0)452					return ret;453 454				priv->channel_info[channel].mode = manual;455				break;456			case 2:457				/* Apply the curve and note as enabled */458				ret =459				    kraken3_write_curve(priv,460							priv->channel_info[channel].pwm_points,461							channel);462				if (ret < 0)463					return ret;464 465				priv->channel_info[channel].mode = curve;466				break;467			default:468				break;469			}470			break;471		default:472			return -EOPNOTSUPP;473		}474		break;475	default:476		return -EOPNOTSUPP;477	}478 479	return 0;480}481 482static ssize_t kraken3_fan_curve_pwm_store(struct device *dev, struct device_attribute *attr,483					   const char *buf, size_t count)484{485	struct sensor_device_attribute_2 *dev_attr = to_sensor_dev_attr_2(attr);486	struct kraken3_data *priv = dev_get_drvdata(dev);487	long val;488	int ret;489 490	if (kstrtol(buf, 10, &val) < 0)491		return -EINVAL;492 493	val = kraken3_pwm_to_percent(val, dev_attr->nr);494	if (val < 0)495		return val;496 497	priv->channel_info[dev_attr->nr].pwm_points[dev_attr->index] = val;498 499	if (priv->channel_info[dev_attr->nr].mode == curve) {500		/* Apply the curve */501		ret =502		    kraken3_write_curve(priv,503					priv->channel_info[dev_attr->nr].pwm_points, dev_attr->nr);504		if (ret < 0)505			return ret;506	}507 508	return count;509}510 511static umode_t kraken3_curve_props_are_visible(struct kobject *kobj, struct attribute *attr,512					       int index)513{514	struct device *dev = kobj_to_dev(kobj);515	struct kraken3_data *priv = dev_get_drvdata(dev);516 517	/* X53 does not have a fan */518	if (index >= CUSTOM_CURVE_POINTS && priv->kind == X53)519		return 0;520 521	return attr->mode;522}523 524/* Custom pump curve from 20C to 59C (critical temp) */525static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point1_pwm, kraken3_fan_curve_pwm, 0, 0);526static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point2_pwm, kraken3_fan_curve_pwm, 0, 1);527static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point3_pwm, kraken3_fan_curve_pwm, 0, 2);528static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point4_pwm, kraken3_fan_curve_pwm, 0, 3);529static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point5_pwm, kraken3_fan_curve_pwm, 0, 4);530static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point6_pwm, kraken3_fan_curve_pwm, 0, 5);531static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point7_pwm, kraken3_fan_curve_pwm, 0, 6);532static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point8_pwm, kraken3_fan_curve_pwm, 0, 7);533static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point9_pwm, kraken3_fan_curve_pwm, 0, 8);534static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point10_pwm, kraken3_fan_curve_pwm, 0, 9);535static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point11_pwm, kraken3_fan_curve_pwm, 0, 10);536static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point12_pwm, kraken3_fan_curve_pwm, 0, 11);537static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point13_pwm, kraken3_fan_curve_pwm, 0, 12);538static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point14_pwm, kraken3_fan_curve_pwm, 0, 13);539static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point15_pwm, kraken3_fan_curve_pwm, 0, 14);540static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point16_pwm, kraken3_fan_curve_pwm, 0, 15);541static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point17_pwm, kraken3_fan_curve_pwm, 0, 16);542static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point18_pwm, kraken3_fan_curve_pwm, 0, 17);543static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point19_pwm, kraken3_fan_curve_pwm, 0, 18);544static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point20_pwm, kraken3_fan_curve_pwm, 0, 19);545static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point21_pwm, kraken3_fan_curve_pwm, 0, 20);546static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point22_pwm, kraken3_fan_curve_pwm, 0, 21);547static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point23_pwm, kraken3_fan_curve_pwm, 0, 22);548static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point24_pwm, kraken3_fan_curve_pwm, 0, 23);549static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point25_pwm, kraken3_fan_curve_pwm, 0, 24);550static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point26_pwm, kraken3_fan_curve_pwm, 0, 25);551static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point27_pwm, kraken3_fan_curve_pwm, 0, 26);552static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point28_pwm, kraken3_fan_curve_pwm, 0, 27);553static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point29_pwm, kraken3_fan_curve_pwm, 0, 28);554static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point30_pwm, kraken3_fan_curve_pwm, 0, 29);555static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point31_pwm, kraken3_fan_curve_pwm, 0, 30);556static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point32_pwm, kraken3_fan_curve_pwm, 0, 31);557static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point33_pwm, kraken3_fan_curve_pwm, 0, 32);558static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point34_pwm, kraken3_fan_curve_pwm, 0, 33);559static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point35_pwm, kraken3_fan_curve_pwm, 0, 34);560static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point36_pwm, kraken3_fan_curve_pwm, 0, 35);561static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point37_pwm, kraken3_fan_curve_pwm, 0, 36);562static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point38_pwm, kraken3_fan_curve_pwm, 0, 37);563static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point39_pwm, kraken3_fan_curve_pwm, 0, 38);564static SENSOR_DEVICE_ATTR_2_WO(temp1_auto_point40_pwm, kraken3_fan_curve_pwm, 0, 39);565 566/* Custom fan curve from 20C to 59C (critical temp) */567static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point1_pwm, kraken3_fan_curve_pwm, 1, 0);568static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point2_pwm, kraken3_fan_curve_pwm, 1, 1);569static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point3_pwm, kraken3_fan_curve_pwm, 1, 2);570static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point4_pwm, kraken3_fan_curve_pwm, 1, 3);571static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point5_pwm, kraken3_fan_curve_pwm, 1, 4);572static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point6_pwm, kraken3_fan_curve_pwm, 1, 5);573static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point7_pwm, kraken3_fan_curve_pwm, 1, 6);574static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point8_pwm, kraken3_fan_curve_pwm, 1, 7);575static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point9_pwm, kraken3_fan_curve_pwm, 1, 8);576static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point10_pwm, kraken3_fan_curve_pwm, 1, 9);577static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point11_pwm, kraken3_fan_curve_pwm, 1, 10);578static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point12_pwm, kraken3_fan_curve_pwm, 1, 11);579static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point13_pwm, kraken3_fan_curve_pwm, 1, 12);580static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point14_pwm, kraken3_fan_curve_pwm, 1, 13);581static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point15_pwm, kraken3_fan_curve_pwm, 1, 14);582static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point16_pwm, kraken3_fan_curve_pwm, 1, 15);583static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point17_pwm, kraken3_fan_curve_pwm, 1, 16);584static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point18_pwm, kraken3_fan_curve_pwm, 1, 17);585static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point19_pwm, kraken3_fan_curve_pwm, 1, 18);586static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point20_pwm, kraken3_fan_curve_pwm, 1, 19);587static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point21_pwm, kraken3_fan_curve_pwm, 1, 20);588static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point22_pwm, kraken3_fan_curve_pwm, 1, 21);589static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point23_pwm, kraken3_fan_curve_pwm, 1, 22);590static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point24_pwm, kraken3_fan_curve_pwm, 1, 23);591static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point25_pwm, kraken3_fan_curve_pwm, 1, 24);592static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point26_pwm, kraken3_fan_curve_pwm, 1, 25);593static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point27_pwm, kraken3_fan_curve_pwm, 1, 26);594static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point28_pwm, kraken3_fan_curve_pwm, 1, 27);595static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point29_pwm, kraken3_fan_curve_pwm, 1, 28);596static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point30_pwm, kraken3_fan_curve_pwm, 1, 29);597static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point31_pwm, kraken3_fan_curve_pwm, 1, 30);598static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point32_pwm, kraken3_fan_curve_pwm, 1, 31);599static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point33_pwm, kraken3_fan_curve_pwm, 1, 32);600static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point34_pwm, kraken3_fan_curve_pwm, 1, 33);601static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point35_pwm, kraken3_fan_curve_pwm, 1, 34);602static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point36_pwm, kraken3_fan_curve_pwm, 1, 35);603static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point37_pwm, kraken3_fan_curve_pwm, 1, 36);604static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point38_pwm, kraken3_fan_curve_pwm, 1, 37);605static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point39_pwm, kraken3_fan_curve_pwm, 1, 38);606static SENSOR_DEVICE_ATTR_2_WO(temp2_auto_point40_pwm, kraken3_fan_curve_pwm, 1, 39);607 608static struct attribute *kraken3_curve_attrs[] = {609	/* Pump control curve */610	&sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,611	&sensor_dev_attr_temp1_auto_point2_pwm.dev_attr.attr,612	&sensor_dev_attr_temp1_auto_point3_pwm.dev_attr.attr,613	&sensor_dev_attr_temp1_auto_point4_pwm.dev_attr.attr,614	&sensor_dev_attr_temp1_auto_point5_pwm.dev_attr.attr,615	&sensor_dev_attr_temp1_auto_point6_pwm.dev_attr.attr,616	&sensor_dev_attr_temp1_auto_point7_pwm.dev_attr.attr,617	&sensor_dev_attr_temp1_auto_point8_pwm.dev_attr.attr,618	&sensor_dev_attr_temp1_auto_point9_pwm.dev_attr.attr,619	&sensor_dev_attr_temp1_auto_point10_pwm.dev_attr.attr,620	&sensor_dev_attr_temp1_auto_point11_pwm.dev_attr.attr,621	&sensor_dev_attr_temp1_auto_point12_pwm.dev_attr.attr,622	&sensor_dev_attr_temp1_auto_point13_pwm.dev_attr.attr,623	&sensor_dev_attr_temp1_auto_point14_pwm.dev_attr.attr,624	&sensor_dev_attr_temp1_auto_point15_pwm.dev_attr.attr,625	&sensor_dev_attr_temp1_auto_point16_pwm.dev_attr.attr,626	&sensor_dev_attr_temp1_auto_point17_pwm.dev_attr.attr,627	&sensor_dev_attr_temp1_auto_point18_pwm.dev_attr.attr,628	&sensor_dev_attr_temp1_auto_point19_pwm.dev_attr.attr,629	&sensor_dev_attr_temp1_auto_point20_pwm.dev_attr.attr,630	&sensor_dev_attr_temp1_auto_point21_pwm.dev_attr.attr,631	&sensor_dev_attr_temp1_auto_point22_pwm.dev_attr.attr,632	&sensor_dev_attr_temp1_auto_point23_pwm.dev_attr.attr,633	&sensor_dev_attr_temp1_auto_point24_pwm.dev_attr.attr,634	&sensor_dev_attr_temp1_auto_point25_pwm.dev_attr.attr,635	&sensor_dev_attr_temp1_auto_point26_pwm.dev_attr.attr,636	&sensor_dev_attr_temp1_auto_point27_pwm.dev_attr.attr,637	&sensor_dev_attr_temp1_auto_point28_pwm.dev_attr.attr,638	&sensor_dev_attr_temp1_auto_point29_pwm.dev_attr.attr,639	&sensor_dev_attr_temp1_auto_point30_pwm.dev_attr.attr,640	&sensor_dev_attr_temp1_auto_point31_pwm.dev_attr.attr,641	&sensor_dev_attr_temp1_auto_point32_pwm.dev_attr.attr,642	&sensor_dev_attr_temp1_auto_point33_pwm.dev_attr.attr,643	&sensor_dev_attr_temp1_auto_point34_pwm.dev_attr.attr,644	&sensor_dev_attr_temp1_auto_point35_pwm.dev_attr.attr,645	&sensor_dev_attr_temp1_auto_point36_pwm.dev_attr.attr,646	&sensor_dev_attr_temp1_auto_point37_pwm.dev_attr.attr,647	&sensor_dev_attr_temp1_auto_point38_pwm.dev_attr.attr,648	&sensor_dev_attr_temp1_auto_point39_pwm.dev_attr.attr,649	&sensor_dev_attr_temp1_auto_point40_pwm.dev_attr.attr,650	/* Fan control curve (Z53 only) */651	&sensor_dev_attr_temp2_auto_point1_pwm.dev_attr.attr,652	&sensor_dev_attr_temp2_auto_point2_pwm.dev_attr.attr,653	&sensor_dev_attr_temp2_auto_point3_pwm.dev_attr.attr,654	&sensor_dev_attr_temp2_auto_point4_pwm.dev_attr.attr,655	&sensor_dev_attr_temp2_auto_point5_pwm.dev_attr.attr,656	&sensor_dev_attr_temp2_auto_point6_pwm.dev_attr.attr,657	&sensor_dev_attr_temp2_auto_point7_pwm.dev_attr.attr,658	&sensor_dev_attr_temp2_auto_point8_pwm.dev_attr.attr,659	&sensor_dev_attr_temp2_auto_point9_pwm.dev_attr.attr,660	&sensor_dev_attr_temp2_auto_point10_pwm.dev_attr.attr,661	&sensor_dev_attr_temp2_auto_point11_pwm.dev_attr.attr,662	&sensor_dev_attr_temp2_auto_point12_pwm.dev_attr.attr,663	&sensor_dev_attr_temp2_auto_point13_pwm.dev_attr.attr,664	&sensor_dev_attr_temp2_auto_point14_pwm.dev_attr.attr,665	&sensor_dev_attr_temp2_auto_point15_pwm.dev_attr.attr,666	&sensor_dev_attr_temp2_auto_point16_pwm.dev_attr.attr,667	&sensor_dev_attr_temp2_auto_point17_pwm.dev_attr.attr,668	&sensor_dev_attr_temp2_auto_point18_pwm.dev_attr.attr,669	&sensor_dev_attr_temp2_auto_point19_pwm.dev_attr.attr,670	&sensor_dev_attr_temp2_auto_point20_pwm.dev_attr.attr,671	&sensor_dev_attr_temp2_auto_point21_pwm.dev_attr.attr,672	&sensor_dev_attr_temp2_auto_point22_pwm.dev_attr.attr,673	&sensor_dev_attr_temp2_auto_point23_pwm.dev_attr.attr,674	&sensor_dev_attr_temp2_auto_point24_pwm.dev_attr.attr,675	&sensor_dev_attr_temp2_auto_point25_pwm.dev_attr.attr,676	&sensor_dev_attr_temp2_auto_point26_pwm.dev_attr.attr,677	&sensor_dev_attr_temp2_auto_point27_pwm.dev_attr.attr,678	&sensor_dev_attr_temp2_auto_point28_pwm.dev_attr.attr,679	&sensor_dev_attr_temp2_auto_point29_pwm.dev_attr.attr,680	&sensor_dev_attr_temp2_auto_point30_pwm.dev_attr.attr,681	&sensor_dev_attr_temp2_auto_point31_pwm.dev_attr.attr,682	&sensor_dev_attr_temp2_auto_point32_pwm.dev_attr.attr,683	&sensor_dev_attr_temp2_auto_point33_pwm.dev_attr.attr,684	&sensor_dev_attr_temp2_auto_point34_pwm.dev_attr.attr,685	&sensor_dev_attr_temp2_auto_point35_pwm.dev_attr.attr,686	&sensor_dev_attr_temp2_auto_point36_pwm.dev_attr.attr,687	&sensor_dev_attr_temp2_auto_point37_pwm.dev_attr.attr,688	&sensor_dev_attr_temp2_auto_point38_pwm.dev_attr.attr,689	&sensor_dev_attr_temp2_auto_point39_pwm.dev_attr.attr,690	&sensor_dev_attr_temp2_auto_point40_pwm.dev_attr.attr,691	NULL692};693 694static const struct attribute_group kraken3_curves_group = {695	.attrs = kraken3_curve_attrs,696	.is_visible = kraken3_curve_props_are_visible697};698 699static const struct attribute_group *kraken3_groups[] = {700	&kraken3_curves_group,701	NULL702};703 704static const struct hwmon_ops kraken3_hwmon_ops = {705	.is_visible = kraken3_is_visible,706	.read = kraken3_read,707	.read_string = kraken3_read_string,708	.write = kraken3_write709};710 711static const struct hwmon_channel_info *kraken3_info[] = {712	HWMON_CHANNEL_INFO(temp,713			   HWMON_T_INPUT | HWMON_T_LABEL),714	HWMON_CHANNEL_INFO(fan,715			   HWMON_F_INPUT | HWMON_F_LABEL,716			   HWMON_F_INPUT | HWMON_F_LABEL,717			   HWMON_F_INPUT | HWMON_F_LABEL,718			   HWMON_F_INPUT | HWMON_F_LABEL),719	HWMON_CHANNEL_INFO(pwm,720			   HWMON_PWM_INPUT | HWMON_PWM_ENABLE,721			   HWMON_PWM_INPUT | HWMON_PWM_ENABLE),722	NULL723};724 725static const struct hwmon_chip_info kraken3_chip_info = {726	.ops = &kraken3_hwmon_ops,727	.info = kraken3_info,728};729 730static int kraken3_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size)731{732	struct kraken3_data *priv = hid_get_drvdata(hdev);733	int i;734 735	if (size < MIN_REPORT_LENGTH)736		return 0;737 738	if (report->id == FIRMWARE_REPORT_ID) {739		/* Read firmware version */740		for (i = 0; i < 3; i++)741			priv->firmware_version[i] = data[FIRMWARE_VERSION_OFFSET + i];742 743		if (!completion_done(&priv->fw_version_processed))744			complete_all(&priv->fw_version_processed);745 746		return 0;747	}748 749	if (report->id != STATUS_REPORT_ID)750		return 0;751 752	if (data[TEMP_SENSOR_START_OFFSET] == 0xff && data[TEMP_SENSOR_END_OFFSET] == 0xff) {753		hid_err_once(hdev,754			     "firmware or device is possibly damaged (is SATA power connected?), not parsing reports\n");755 756		/*757		 * Mark first X-series device report as received,758		 * as well as all for Z-series, if faulty.759		 */760		spin_lock(&priv->status_completion_lock);761		if (priv->kind != X53 || !completion_done(&priv->status_report_processed)) {762			priv->is_device_faulty = true;763			complete_all(&priv->status_report_processed);764		}765		spin_unlock(&priv->status_completion_lock);766 767		return 0;768	}769 770	/* Received normal data */771	priv->is_device_faulty = false;772 773	/* Temperature and fan sensor readings */774	priv->temp_input[0] =775	    data[TEMP_SENSOR_START_OFFSET] * 1000 + data[TEMP_SENSOR_END_OFFSET] * 100;776 777	priv->fan_input[0] = get_unaligned_le16(data + PUMP_SPEED_OFFSET);778	priv->channel_info[0].reported_duty = kraken3_percent_to_pwm(data[PUMP_DUTY_OFFSET]);779 780	spin_lock(&priv->status_completion_lock);781	if (priv->kind == X53 && !completion_done(&priv->status_report_processed)) {782		/* Mark first X-series device report as received */783		complete_all(&priv->status_report_processed);784	} else if (priv->kind == Z53 || priv->kind == KRAKEN2023) {785		/* Additional readings for Z53 and KRAKEN2023 */786		priv->fan_input[1] = get_unaligned_le16(data + Z53_FAN_SPEED_OFFSET);787		priv->channel_info[1].reported_duty =788		    kraken3_percent_to_pwm(data[Z53_FAN_DUTY_OFFSET]);789 790		if (!completion_done(&priv->status_report_processed))791			complete_all(&priv->status_report_processed);792	}793	spin_unlock(&priv->status_completion_lock);794 795	priv->updated = jiffies;796 797	return 0;798}799 800static int kraken3_init_device(struct hid_device *hdev)801{802	struct kraken3_data *priv = hid_get_drvdata(hdev);803	int ret;804 805	/* Set the polling interval */806	ret = kraken3_write_expanded(priv, set_interval_cmd, SET_INTERVAL_CMD_LENGTH);807	if (ret < 0)808		return ret;809 810	/* Finalize the init process */811	ret = kraken3_write_expanded(priv, finish_init_cmd, FINISH_INIT_CMD_LENGTH);812	if (ret < 0)813		return ret;814 815	return 0;816}817 818static int kraken3_get_fw_ver(struct hid_device *hdev)819{820	struct kraken3_data *priv = hid_get_drvdata(hdev);821	int ret;822 823	ret = kraken3_write_expanded(priv, get_fw_version_cmd, GET_FW_VERSION_CMD_LENGTH);824	if (ret < 0)825		return ret;826 827	ret = wait_for_completion_interruptible_timeout(&priv->fw_version_processed,828							msecs_to_jiffies(STATUS_VALIDITY));829	if (ret == 0)830		return -ETIMEDOUT;831	else if (ret < 0)832		return ret;833 834	return 0;835}836 837static int __maybe_unused kraken3_reset_resume(struct hid_device *hdev)838{839	int ret;840 841	ret = kraken3_init_device(hdev);842	if (ret)843		hid_err(hdev, "req init (reset_resume) failed with %d\n", ret);844 845	return ret;846}847 848static int firmware_version_show(struct seq_file *seqf, void *unused)849{850	struct kraken3_data *priv = seqf->private;851 852	seq_printf(seqf, "%u.%u.%u\n", priv->firmware_version[0], priv->firmware_version[1],853		   priv->firmware_version[2]);854 855	return 0;856}857DEFINE_SHOW_ATTRIBUTE(firmware_version);858 859static void kraken3_debugfs_init(struct kraken3_data *priv, const char *device_name)860{861	char name[64];862 863	if (!priv->firmware_version[0])864		return;		/* Nothing to display in debugfs */865 866	scnprintf(name, sizeof(name), "%s_%s-%s", DRIVER_NAME, device_name,867		  dev_name(&priv->hdev->dev));868 869	priv->debugfs = debugfs_create_dir(name, NULL);870	debugfs_create_file("firmware_version", 0444, priv->debugfs, priv, &firmware_version_fops);871}872 873static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id)874{875	struct kraken3_data *priv;876	const char *device_name;877	int ret;878 879	priv = devm_kzalloc(&hdev->dev, sizeof(*priv), GFP_KERNEL);880	if (!priv)881		return -ENOMEM;882 883	priv->hdev = hdev;884	hid_set_drvdata(hdev, priv);885 886	/*887	 * Initialize ->updated to STATUS_VALIDITY seconds in the past, making888	 * the initial empty data invalid for kraken3_read without the need for889	 * a special case there.890	 */891	priv->updated = jiffies - msecs_to_jiffies(STATUS_VALIDITY);892 893	ret = hid_parse(hdev);894	if (ret) {895		hid_err(hdev, "hid parse failed with %d\n", ret);896		return ret;897	}898 899	/* Enable hidraw so existing user-space tools can continue to work */900	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);901	if (ret) {902		hid_err(hdev, "hid hw start failed with %d\n", ret);903		return ret;904	}905 906	ret = hid_hw_open(hdev);907	if (ret) {908		hid_err(hdev, "hid hw open failed with %d\n", ret);909		goto fail_and_stop;910	}911 912	switch (hdev->product) {913	case USB_PRODUCT_ID_X53:914	case USB_PRODUCT_ID_X53_SECOND:915		priv->kind = X53;916		device_name = "x53";917		break;918	case USB_PRODUCT_ID_Z53:919		priv->kind = Z53;920		device_name = "z53";921		break;922	case USB_PRODUCT_ID_KRAKEN2023:923		priv->kind = KRAKEN2023;924		device_name = "kraken2023";925		break;926	case USB_PRODUCT_ID_KRAKEN2023_ELITE:927		priv->kind = KRAKEN2023;928		device_name = "kraken2023elite";929		break;930	default:931		ret = -ENODEV;932		goto fail_and_close;933	}934 935	priv->buffer = devm_kzalloc(&hdev->dev, MAX_REPORT_LENGTH, GFP_KERNEL);936	if (!priv->buffer) {937		ret = -ENOMEM;938		goto fail_and_close;939	}940 941	mutex_init(&priv->buffer_lock);942	mutex_init(&priv->z53_status_request_lock);943	init_completion(&priv->fw_version_processed);944	init_completion(&priv->status_report_processed);945	spin_lock_init(&priv->status_completion_lock);946 947	hid_device_io_start(hdev);948	ret = kraken3_init_device(hdev);949	if (ret < 0) {950		hid_err(hdev, "device init failed with %d\n", ret);951		goto fail_and_close;952	}953 954	ret = kraken3_get_fw_ver(hdev);955	if (ret < 0)956		hid_warn(hdev, "fw version request failed with %d\n", ret);957 958	priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, device_name, priv,959							  &kraken3_chip_info, kraken3_groups);960	if (IS_ERR(priv->hwmon_dev)) {961		ret = PTR_ERR(priv->hwmon_dev);962		hid_err(hdev, "hwmon registration failed with %d\n", ret);963		goto fail_and_close;964	}965 966	kraken3_debugfs_init(priv, device_name);967 968	return 0;969 970fail_and_close:971	hid_hw_close(hdev);972fail_and_stop:973	hid_hw_stop(hdev);974	return ret;975}976 977static void kraken3_remove(struct hid_device *hdev)978{979	struct kraken3_data *priv = hid_get_drvdata(hdev);980 981	debugfs_remove_recursive(priv->debugfs);982	hwmon_device_unregister(priv->hwmon_dev);983 984	hid_hw_close(hdev);985	hid_hw_stop(hdev);986}987 988static const struct hid_device_id kraken3_table[] = {989	/* NZXT Kraken X53/X63/X73 have two possible product IDs */990	{ HID_USB_DEVICE(USB_VENDOR_ID_NZXT, USB_PRODUCT_ID_X53) },991	{ HID_USB_DEVICE(USB_VENDOR_ID_NZXT, USB_PRODUCT_ID_X53_SECOND) },992	{ HID_USB_DEVICE(USB_VENDOR_ID_NZXT, USB_PRODUCT_ID_Z53) },993	{ HID_USB_DEVICE(USB_VENDOR_ID_NZXT, USB_PRODUCT_ID_KRAKEN2023) },994	{ HID_USB_DEVICE(USB_VENDOR_ID_NZXT, USB_PRODUCT_ID_KRAKEN2023_ELITE) },995	{ }996};997 998MODULE_DEVICE_TABLE(hid, kraken3_table);999 1000static struct hid_driver kraken3_driver = {1001	.name = DRIVER_NAME,1002	.id_table = kraken3_table,1003	.probe = kraken3_probe,1004	.remove = kraken3_remove,1005	.raw_event = kraken3_raw_event,1006#ifdef CONFIG_PM1007	.reset_resume = kraken3_reset_resume,1008#endif1009};1010 1011static int __init kraken3_init(void)1012{1013	return hid_register_driver(&kraken3_driver);1014}1015 1016static void __exit kraken3_exit(void)1017{1018	hid_unregister_driver(&kraken3_driver);1019}1020 1021/* When compiled into the kernel, initialize after the HID bus */1022late_initcall(kraken3_init);1023module_exit(kraken3_exit);1024 1025MODULE_LICENSE("GPL");1026MODULE_AUTHOR("Jonas Malaco <jonas@protocubo.io>");1027MODULE_AUTHOR("Aleksa Savic <savicaleksa83@gmail.com>");1028MODULE_DESCRIPTION("Hwmon driver for NZXT Kraken X53/X63/X73, Z53/Z63/Z73 coolers");1029