Adds a driver for the Corsair PSU HID protocol, currently supporting all power supplies of the HXi/RMi series.
Signed-off-by: Wilken Gottwalt <[email protected]> --- Documentation/hwmon/corsair-psu.rst | 78 ++++ Documentation/hwmon/index.rst | 1 + MAINTAINERS | 7 + drivers/hwmon/Kconfig | 12 + drivers/hwmon/Makefile | 1 + drivers/hwmon/corsair-psu.c | 664 ++++++++++++++++++++++++++++ 6 files changed, 763 insertions(+) create mode 100644 Documentation/hwmon/corsair-psu.rst create mode 100644 drivers/hwmon/corsair-psu.c diff --git a/Documentation/hwmon/corsair-psu.rst b/Documentation/hwmon/corsair-psu.rst new file mode 100644 index 000000000000..59e89b4ec270 --- /dev/null +++ b/Documentation/hwmon/corsair-psu.rst @@ -0,0 +1,78 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver corsair-psu +========================= + +Supported devices: + +* Corsair Power Supplies + + Corsair HX650i + + Corsair HX750i + + Corsair HX850i + + Corsair HX1000i + + Corsair HX1200i + + Corsair RM650i + + Corsair RM750i + + Corsair RM850i + + Corsair RM1000i + +Author: Wilken Gottwalt + +Description +----------- + +This driver implements the sysfs interface for the Corsair PSUs with a HID protocol +interface of the HXi and RMi series. +These power supplies provide access to a micro-controller with 2 attached +temperature sensors, 1 fan rpm sensor, 4 sensors for volt levels, 4 sensors for +power usage and 4 sensors for current levels and addtional non-sensor information +like uptimes. + +Sysfs entries +------------- + +======================= ======================================================== +curr1_input Total current usage +curr2_input Current on the 12v psu rail +curr3_input Current on the 5v psu rail +curr4_input Current on the 3.3v psu rail +fan1_input RPM of psu fan +in0_input Voltage of the psu ac input +in1_input Voltage of the 12v psu rail +in2_input Voltage of the 5v psu rail +in3_input Voltage of the 3.3 psu rail +power1_input Total power usage +power2_input Power usage of the 12v psu rail +power3_input Power usage of the 5v psu rail +power4_input Power usage of the 3.3v psu rail +temp1_input Temperature of the psu vrm component +temp2_input Temperature of the psu case +======================= ======================================================== + +Usage Notes +----------- + +It is an USB HID device, so it is auto-detected and supports hot-swapping. + +Flickering values in the rail voltage levels can be an indicator for a failing +PSU. The driver also provides some additional useful values via debugfs, which +do not fit into the hwmon class. + +Debugfs entries +--------------- + +======================= ======================================================== +uptime Current uptime of the psu +uptime_total Total uptime of the psu +vendor Vendor name of the psu +product Product name of the psu +======================= ======================================================== diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index 750d3a975d82..b2a8a47f742a 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -48,6 +48,7 @@ Hardware Monitoring Kernel Drivers bt1-pvt coretemp corsair-cpro + corsair-psu da9052 da9055 dell-smm-hwmon diff --git a/MAINTAINERS b/MAINTAINERS index 867157311dc8..d1a4e54b21ef 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4478,6 +4478,13 @@ L: [email protected] S: Maintained F: drivers/hwmon/corsair-cpro.c +CORSAIR-PSU HARDWARE MONITOR DRIVER +M: Wilken Gottwalt <[email protected]> +L: [email protected] +S: Maintained +F: Documentation/hwmon/corsair-psu.rst +F: drivers/hwmon/corsair-psu.c + COSA/SRP SYNC SERIAL DRIVER M: Jan "Yenya" Kasprzak <[email protected]> S: Maintained diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 8dc28b26916e..bc8fdd13e387 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -449,6 +449,18 @@ config SENSORS_CORSAIR_CPRO This driver can also be built as a module. If so, the module will be called corsair-cpro. +config SENSORS_CORSAIR_PSU + tristate "Corsair PSU HID controller" + depends on HID + help + If you say yes here you get support for Corsair PSUs with a HID + interface. + Currently this driver supports the (RM/HX)650i, (RM/HX)750i, + (RM/HX)850i, (RM/HX)1000i and HX1200i power supplies by Corsair. + + This driver can also be built as a module. If so, the module + will be called corsair-psu. + config SENSORS_DRIVETEMP tristate "Hard disk drives with temperature sensors" depends on SCSI && ATA diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index a8f4b35b136b..2651bcc7ae5f 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_SENSORS_AXI_FAN_CONTROL) += axi-fan-control.o obj-$(CONFIG_SENSORS_BT1_PVT) += bt1-pvt.o obj-$(CONFIG_SENSORS_CORETEMP) += coretemp.o obj-$(CONFIG_SENSORS_CORSAIR_CPRO) += corsair-cpro.o +obj-$(CONFIG_SENSORS_CORSAIR_PSU) += corsair-psu.o obj-$(CONFIG_SENSORS_DA9052_ADC)+= da9052-hwmon.o obj-$(CONFIG_SENSORS_DA9055)+= da9055-hwmon.o obj-$(CONFIG_SENSORS_DELL_SMM) += dell-smm-hwmon.o diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c new file mode 100644 index 000000000000..f3007e1471d9 --- /dev/null +++ b/drivers/hwmon/corsair-psu.c @@ -0,0 +1,664 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * corsair-psu.c - Linux driver for Corsair power supplies with HID sensors interface + * Copyright (C) 2020 Wilken Gottwalt <[email protected]> + */ + +#include <linux/completion.h> +#include <linux/debugfs.h> +#include <linux/errno.h> +#include <linux/hid.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/jiffies.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/slab.h> +#include <linux/types.h> + +/* + * Corsair protocol for PSUs + * + * message size = 64 bytes (request and response, little endian) + * request: + * [length][command][param0][param1][paramX]... + * reply: + * [echo of length][echo of command][data0][data1][dataX]... + * + * - commands are byte sized opcodes + * - length is the sum of all bytes of the commands/params + * - the micro-controller of most of these PSUs support concatenation in the request and reply, + * but it is better to not rely on this (it is also hard to parse) + * - the driver uses raw events to be accessible from userspace (though this is not really + * supported, it is just there for convenience, may be removed in the future) + * - a reply always start with the length and command in the same order the request used it + * - length of the reply data is specific to the command used + * - some of the commands work on a rail and can be switched to a specific rail (0 = 12v, + * 1 = 5v, 2 = 3.3v) + * - the format of the init command 0xFE is swapped length/command bytes + * - parameter bytes amount and values are specific to the command (rail setting is the only + * for now that uses non-zero values) + * - there are much more commands, especially for configuring the device, but they are not + * supported because a wrong command/length can lockup the micro-controller + * - the driver supports debugfs for values not fitting into the hwmon class + * - not every device class (HXi, RMi or AXi) supports all commands + * - it is a pure sensors reading driver (will not support configuring) + */ + +#define DRIVER_NAME "corsair-psu" + +#define REPLY_SIZE 16 /* max length of a reply to a single command */ +#define CMD_BUFFER_SIZE 64 +#define CMD_TIMEOUT_MS 250 +#define SECONDS_PER_HOUR (60 * 60) +#define SECONDS_PER_DAY (SECONDS_PER_HOUR * 24) + +#define PSU_CMD_SELECT_RAIL 0x00 +#define PSU_CMD_IN_VOLTS 0x88 +#define PSU_CMD_IN_AMPS 0x89 +#define PSU_CMD_RAIL_OUT_VOLTS 0x8B +#define PSU_CMD_RAIL_AMPS 0x8C +#define PSU_CMD_TEMP0 0x8D +#define PSU_CMD_TEMP1 0x8E +#define PSU_CMD_FAN 0x90 +#define PSU_CMD_RAIL_WATTS 0x96 +#define PSU_CMD_VEND_STR 0x99 +#define PSU_CMD_PROD_STR 0x9A +#define PSU_CMD_TOTAL_WATTS 0xEE +#define PSU_CMD_TOTAL_UPTIME 0xD1 +#define PSU_CMD_UPTIME 0xD2 +#define PSU_CMD_INIT 0xFE + +#define L_IN_VOLTS "v_in" +#define L_OUT_VOLTS_12V "v_out +12v" +#define L_OUT_VOLTS_5V "v_out +5v" +#define L_OUT_VOLTS_3_3V "v_out +3.3v" +#define L_IN_AMPS "curr in" +#define L_AMPS_12V "curr +12v" +#define L_AMPS_5V "curr +5v" +#define L_AMPS_3_3V "curr +3.3v" +#define L_FAN "psu fan" +#define L_TEMP0 "vrm temp" +#define L_TEMP1 "case temp" +#define L_WATTS "power total" +#define L_WATTS_12V "power +12v" +#define L_WATTS_5V "power +5v" +#define L_WATTS_3_3V "power +3.3v" + +struct corsairpsu_data { + struct hid_device *hdev; + struct device *hwmon_dev; + struct completion wait_completion; + struct mutex lock; /* for locking access to cmd_buffer */ + u8 *cmd_buffer; + char vendor[REPLY_SIZE]; + char product[REPLY_SIZE]; +}; + +/* some values are SMBus LINEAR11 data which need a conversion */ +static int corsairpsu_linear11_to_int(const u16 val) +{ + int exp = val >> 0x0B; + int mant = val & 0x7FF; + int i; + + if (exp > 0x0F) + exp -= 0x20; + if (mant > 0x3FF) + mant -= 0x800; + if ((mant & 0x01) == 1) + ++mant; + if (exp < 0) { + for (i = 0; i < -exp; ++i) + mant /= 2; + } else { + for (i = 0; i < exp; ++i) + mant *= 2; + } + + return mant; +} + +static int corsairpsu_usb_cmd(struct corsairpsu_data *priv, u8 p0, u8 p1, u8 p2, void *data) +{ + unsigned long time; + int ret; + + memset(priv->cmd_buffer, 0, CMD_BUFFER_SIZE); + priv->cmd_buffer[0] = p0; + priv->cmd_buffer[1] = p1; + priv->cmd_buffer[2] = p2; + + reinit_completion(&priv->wait_completion); + + ret = hid_hw_output_report(priv->hdev, priv->cmd_buffer, CMD_BUFFER_SIZE); + if (ret < 0) + return ret; + + time = wait_for_completion_timeout(&priv->wait_completion, + msecs_to_jiffies(CMD_TIMEOUT_MS)); + if (!time) + return -ETIMEDOUT; + + /* at the start of the reply is an echo of the send command/length in the same order it was + * send + * not every command is supported on every device class, if a command is not supported, the + * length value in the reply is okay, but the command value is set to 0 + */ + if (p0 != priv->cmd_buffer[0] || p1 != priv->cmd_buffer[1]) + return -EOPNOTSUPP; + + if (data) + memcpy(data, priv->cmd_buffer + 2, REPLY_SIZE); + + return 0; +} + +static int corsairpsu_init(struct corsairpsu_data *priv) +{ + /* PSU_CMD_INIT uses swapped length/command and expects 2 parameter bytes, this command + * actually generates a reply, but we don't need it + */ + return corsairpsu_usb_cmd(priv, PSU_CMD_INIT, 3, 0, NULL); +} + +static int corsairpsu_fwinfo(struct corsairpsu_data *priv) +{ + int ret; + + ret = corsairpsu_usb_cmd(priv, 3, PSU_CMD_VEND_STR, 0, priv->vendor); + if (ret < 0) + return ret; + + ret = corsairpsu_usb_cmd(priv, 3, PSU_CMD_PROD_STR, 0, priv->product); + if (ret < 0) + return ret; + + dev_info(&priv->hdev->dev, "Corsair PSU: %s %s\n", priv->vendor, priv->product); + + return 0; +} + +static int corsairpsu_request(struct corsairpsu_data *priv, u8 cmd, u8 rail, void *data) +{ + int ret; + + mutex_lock(&priv->lock); + switch (cmd) { + case PSU_CMD_RAIL_OUT_VOLTS: + case PSU_CMD_RAIL_AMPS: + case PSU_CMD_RAIL_WATTS: + /* PSU_CMD_SELECT_RAIL is the only command with 1 parameter byte only, it is + * the only command for now, that uses a non-zero parameter + */ + ret = corsairpsu_usb_cmd(priv, 2, PSU_CMD_SELECT_RAIL, rail, NULL); + if (ret < 0) + goto cmd_fail; + fallthrough; + case PSU_CMD_IN_VOLTS: + case PSU_CMD_IN_AMPS: + case PSU_CMD_TEMP0: + case PSU_CMD_TEMP1: + case PSU_CMD_FAN: + case PSU_CMD_TOTAL_WATTS: + case PSU_CMD_TOTAL_UPTIME: + case PSU_CMD_UPTIME: + if (!data) { + ret = -EIO; + goto cmd_fail; + } + ret = corsairpsu_usb_cmd(priv, 3, cmd, 0, data); + break; + default: + /* don't allow wrong cmd/length combinations which can lockup the micro-controller + * also don't allow a direct rail or call once command (init, vendor, product) + */ + ret = -EIO; + break; + } + +cmd_fail: + mutex_unlock(&priv->lock); + return ret; +} + +static int corsairpsu_get_value(struct corsairpsu_data *priv, u8 cmd, u8 rail, u32 *val) +{ + u8 data[REPLY_SIZE]; + int ret; + + ret = corsairpsu_request(priv, cmd, rail, data); + if (ret < 0) + return ret; + + switch (cmd) { + case PSU_CMD_IN_VOLTS: + case PSU_CMD_IN_AMPS: + case PSU_CMD_RAIL_OUT_VOLTS: + case PSU_CMD_RAIL_AMPS: + case PSU_CMD_TEMP0: + case PSU_CMD_TEMP1: + *val = (data[1] << 8) + data[0]; + *val = corsairpsu_linear11_to_int(*val) * 1000; + break; + case PSU_CMD_FAN: + /* TODO: hard to check if this is the correct way to calculate the value, these + * Corsair PSU's are semi-passive and you need to put quite some load on the + * PSU to get the fan to start spinning + */ + *val = (data[0] << 8) + data[1]; + break; + case PSU_CMD_RAIL_WATTS: + case PSU_CMD_TOTAL_WATTS: + *val = (data[1] << 8) + data[0]; + *val = corsairpsu_linear11_to_int(*val) * 1000000; + break; + case PSU_CMD_TOTAL_UPTIME: + case PSU_CMD_UPTIME: + *val = (data[3] << 24) + (data[2] << 16) + (data[1] << 8) + data[0]; + break; + default: + ret = -EIO; + break; + } + + return ret; +} + +static umode_t corsairpsu_hwmon_ops_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type == hwmon_temp && (attr == hwmon_temp_input || attr == hwmon_temp_label)) + return 0444; + else if (type == hwmon_fan && (attr == hwmon_fan_input || attr == hwmon_fan_label)) + return 0444; + else if (type == hwmon_power && (attr == hwmon_power_input || attr == hwmon_power_label)) + return 0444; + else if (type == hwmon_in && (attr == hwmon_in_input || attr == hwmon_in_label)) + return 0444; + else if (type == hwmon_curr && (attr == hwmon_curr_input || attr == hwmon_curr_label)) + return 0444; + + return 0; +} + +static int corsairpsu_hwmon_ops_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct corsairpsu_data *priv = dev_get_drvdata(dev); + u32 tmp; + int ret; + + if (type == hwmon_temp && attr == hwmon_temp_input && channel < 2) { + ret = corsairpsu_get_value(priv, channel ? PSU_CMD_TEMP1 : PSU_CMD_TEMP0, channel, + &tmp); + } else if (type == hwmon_fan && attr == hwmon_fan_input) { + ret = corsairpsu_get_value(priv, PSU_CMD_FAN, 0, &tmp); + } else if (type == hwmon_power && attr == hwmon_power_input) { + switch (channel) { + case 0: + ret = corsairpsu_get_value(priv, PSU_CMD_TOTAL_WATTS, 0, &tmp); + break; + case 1: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_WATTS, 0, &tmp); + break; + case 2: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_WATTS, 1, &tmp); + break; + case 3: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_WATTS, 2, &tmp); + break; + default: + return -EOPNOTSUPP; + } + } else if (type == hwmon_in && attr == hwmon_in_input) { + switch (channel) { + case 0: + ret = corsairpsu_get_value(priv, PSU_CMD_IN_VOLTS, 0, &tmp); + break; + case 1: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_OUT_VOLTS, 0, &tmp); + break; + case 2: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_OUT_VOLTS, 1, &tmp); + break; + case 3: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_OUT_VOLTS, 2, &tmp); + break; + default: + return -EOPNOTSUPP; + } + } else if (type == hwmon_curr && attr == hwmon_curr_input) { + switch (channel) { + case 0: + ret = corsairpsu_get_value(priv, PSU_CMD_IN_AMPS, 0, &tmp); + break; + case 1: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_AMPS, 0, &tmp); + break; + case 2: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_AMPS, 1, &tmp); + break; + case 3: + ret = corsairpsu_get_value(priv, PSU_CMD_RAIL_AMPS, 2, &tmp); + break; + default: + return -EOPNOTSUPP; + } + } else { + return -EOPNOTSUPP; + } + + if (ret < 0) + return ret; + *val = tmp; + + return 0; +} + +static int corsairpsu_hwmon_ops_read_string(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, const char **str) +{ + if (type == hwmon_temp && attr == hwmon_temp_label) { + *str = channel ? L_TEMP1 : L_TEMP0; + return 0; + } else if (type == hwmon_fan && attr == hwmon_fan_label) { + *str = L_FAN; + return 0; + } else if (type == hwmon_power && attr == hwmon_power_label) { + switch (channel) { + case 0: + *str = L_WATTS; + return 0; + case 1: + *str = L_WATTS_12V; + return 0; + case 2: + *str = L_WATTS_5V; + return 0; + case 3: + *str = L_WATTS_3_3V; + return 0; + default: + break; + } + } else if (type == hwmon_in && attr == hwmon_in_label) { + switch (channel) { + case 0: + *str = L_IN_VOLTS; + return 0; + case 1: + *str = L_OUT_VOLTS_12V; + return 0; + case 2: + *str = L_OUT_VOLTS_5V; + return 0; + case 3: + *str = L_OUT_VOLTS_3_3V; + return 0; + default: + break; + } + } else if (type == hwmon_curr && attr == hwmon_curr_label) { + switch (channel) { + case 0: + *str = L_IN_AMPS; + return 0; + case 1: + *str = L_AMPS_12V; + return 0; + case 2: + *str = L_AMPS_5V; + return 0; + case 3: + *str = L_AMPS_3_3V; + return 0; + default: + break; + } + } + + return -EOPNOTSUPP; +} + +static const struct hwmon_ops corsairpsu_hwmon_ops = { + .is_visible = corsairpsu_hwmon_ops_is_visible, + .read = corsairpsu_hwmon_ops_read, + .read_string = corsairpsu_hwmon_ops_read_string, +}; + +static const struct hwmon_channel_info *corsairpsu_info[] = { + HWMON_CHANNEL_INFO(chip, + HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL), + HWMON_CHANNEL_INFO(fan, + HWMON_F_INPUT | HWMON_F_LABEL), + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_LABEL, + HWMON_P_INPUT | HWMON_P_LABEL, + HWMON_P_INPUT | HWMON_P_LABEL, + HWMON_P_INPUT | HWMON_P_LABEL), + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | HWMON_I_LABEL, + HWMON_I_INPUT | HWMON_I_LABEL, + HWMON_I_INPUT | HWMON_I_LABEL, + HWMON_I_INPUT | HWMON_I_LABEL), + HWMON_CHANNEL_INFO(curr, + HWMON_C_INPUT | HWMON_C_LABEL, + HWMON_C_INPUT | HWMON_C_LABEL, + HWMON_C_INPUT | HWMON_C_LABEL, + HWMON_C_INPUT | HWMON_C_LABEL), + NULL +}; + +static const struct hwmon_chip_info corsairpsu_chip_info = { + .ops = &corsairpsu_hwmon_ops, + .info = corsairpsu_info, +}; + +#ifdef CONFIG_DEBUG_FS + +static void print_uptime(struct seq_file *seqf, u8 cmd) +{ + struct corsairpsu_data *priv = seqf->private; + u32 val; + int ret; + + ret = corsairpsu_get_value(priv, cmd, 0, &val); + if (ret < 0) { + seq_puts(seqf, "N/A\n"); + return; + } + + if (val > SECONDS_PER_DAY) { + seq_printf(seqf, "%d day(s), %02d:%02d:%02d\n", val / SECONDS_PER_DAY, + val % SECONDS_PER_DAY / SECONDS_PER_HOUR, val % SECONDS_PER_HOUR / 60, + val % 60); + return; + } + + seq_printf(seqf, "%02d:%02d:%02d\n", val % SECONDS_PER_DAY / SECONDS_PER_HOUR, + val % SECONDS_PER_HOUR / 60, val % 60); +} + +static int uptime_show(struct seq_file *seqf, void *unused) +{ + print_uptime(seqf, PSU_CMD_UPTIME); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(uptime); + +static int uptime_total_show(struct seq_file *seqf, void *unused) +{ + print_uptime(seqf, PSU_CMD_TOTAL_UPTIME); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(uptime_total); + +static int vendor_show(struct seq_file *seqf, void *unused) +{ + struct corsairpsu_data *priv = seqf->private; + + seq_printf(seqf, "%s\n", priv->vendor); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(vendor); + +static int product_show(struct seq_file *seqf, void *unused) +{ + struct corsairpsu_data *priv = seqf->private; + + seq_printf(seqf, "%s\n", priv->product); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(product); + +static void corsairpsu_debugfs_cleanup(void *ddir) +{ + debugfs_remove_recursive(ddir); +} + +static void corsairpsu_debugfs_init(struct corsairpsu_data *priv) +{ + struct dentry *debugfs; + char name[32]; + + scnprintf(name, sizeof(name), "%s-%s", DRIVER_NAME, dev_name(&priv->hdev->dev)); + + debugfs = debugfs_create_dir(name, NULL); + if (debugfs) { + debugfs_create_file("uptime", 0444, debugfs, priv, &uptime_fops); + debugfs_create_file("uptime_total", 0444, debugfs, priv, &uptime_total_fops); + debugfs_create_file("vendor", 0444, debugfs, priv, &vendor_fops); + debugfs_create_file("product", 0444, debugfs, priv, &product_fops); + devm_add_action_or_reset(&priv->hdev->dev, corsairpsu_debugfs_cleanup, debugfs); + } +} + +#else + +static void corsairpsu_debugfs_init(struct corsairlink_data *priv) +{ +} + +#endif + +static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + struct corsairpsu_data *priv; + int ret; + + priv = devm_kzalloc(&hdev->dev, sizeof(struct corsairpsu_data), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->cmd_buffer = devm_kmalloc(&hdev->dev, CMD_BUFFER_SIZE, GFP_KERNEL); + if (!priv->cmd_buffer) + return -ENOMEM; + + ret = hid_parse(hdev); + if (ret) + return ret; + + ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); + if (ret) + return ret; + + ret = hid_hw_open(hdev); + if (ret) + goto fail_and_stop; + + priv->hdev = hdev; + hid_set_drvdata(hdev, priv); + mutex_init(&priv->lock); + init_completion(&priv->wait_completion); + + hid_device_io_start(hdev); + + ret = corsairpsu_init(priv); + if (ret < 0) { + dev_err(&hdev->dev, "unable to initialize device (%d)\n", ret); + goto fail_and_stop; + } + + ret = corsairpsu_fwinfo(priv); + if (ret < 0) { + dev_err(&hdev->dev, "unable to query firmware (%d)\n", ret); + goto fail_and_stop; + } + + priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "corsairpsu", priv, + &corsairpsu_chip_info, 0); + + if (IS_ERR(priv->hwmon_dev)) { + ret = PTR_ERR(priv->hwmon_dev); + goto fail_and_close; + } + + corsairpsu_debugfs_init(priv); + + return 0; + +fail_and_close: + hid_hw_close(hdev); +fail_and_stop: + hid_hw_stop(hdev); + return ret; +} + +static void corsairpsu_remove(struct hid_device *hdev) +{ + struct corsairpsu_data *priv = hid_get_drvdata(hdev); + + hwmon_device_unregister(priv->hwmon_dev); + hid_hw_close(hdev); + hid_hw_stop(hdev); +} + +static int corsairpsu_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, + int size) +{ + struct corsairpsu_data *priv = hid_get_drvdata(hdev); + + if (completion_done(&priv->wait_completion)) + return 0; + + memcpy(priv->cmd_buffer, data, min(CMD_BUFFER_SIZE, size)); + complete(&priv->wait_completion); + + return 0; +} + +static const struct hid_device_id corsairpsu_idtable[] = { + { HID_USB_DEVICE(0x1b1c, 0x1c04) }, /* Corsair HX650i */ + { HID_USB_DEVICE(0x1b1c, 0x1c05) }, /* Corsair HX750i */ + { HID_USB_DEVICE(0x1b1c, 0x1c06) }, /* Corsair HX850i */ + { HID_USB_DEVICE(0x1b1c, 0x1c07) }, /* Corsair HX1000i */ + { HID_USB_DEVICE(0x1b1c, 0x1c08) }, /* Corsair HX1200i */ + { HID_USB_DEVICE(0x1b1c, 0x1c0a) }, /* Corsair RM650i */ + { HID_USB_DEVICE(0x1b1c, 0x1c0b) }, /* Corsair RM750i */ + { HID_USB_DEVICE(0x1b1c, 0x1c0c) }, /* Corsair RM850i */ + { HID_USB_DEVICE(0x1b1c, 0x1c0d) }, /* Corsair RM1000i */ + { }, +}; +MODULE_DEVICE_TABLE(hid, corsairpsu_idtable); + +static struct hid_driver corsairpsu_driver = { + .name = DRIVER_NAME, + .id_table = corsairpsu_idtable, + .probe = corsairpsu_probe, + .remove = corsairpsu_remove, + .raw_event = corsairpsu_raw_event, +}; +module_hid_driver(corsairpsu_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Wilken Gottwalt <[email protected]>"); +MODULE_DESCRIPTION("Linux driver for Corsair power supplies with HID sensors interface"); -- 2.29.0
