On Tue, Dec 01, 2020 at 04:59:00PM -1000, xiao.ma wrote: > From: "xiao.ma" <xiao.mx.ma@xxxxxxxxxxx> > > The driver supports Q54SJ108A2 series modules of Delta. > Standard attributes are in sysfs, and other attributes are in debugfs. > > Signed-off-by: xiao.ma <xiao.mx.ma@xxxxxxxxxxx> Applied. Thanks, Guenter > --- > > Notes: > Patch v2 changelog: > Add delta.rst in Documentation/hwmon. > Tristate "DELTA" in Kconfig is changed to "DELTA_POWER_SUPPLIED". > Modify code: drop the excessive empty lines, correct the comment content, adjust indent, remove extra brackets. > Patch v3 changelog: > Add delta.rst to Documentation/hwmon/index.rst. > Tristate "DELTA_POWER_SUPPLIES" in Kconfig is changed to "Delta Power Supplies". > Patch v4 changelog: > Correct the spelling "Temperature" in the delta.rst. > Add Write_protect when write command VOUT_OV_RESPONSE and IOUT_OC_FAULT_RESPONSE. > Patch v5 changelog: > Add some non-standard attributes in sysfs system. > Patch v6 changelog: > delta.c and delta.rst are renamed to q54sj108a2.c and q54sj108a2.rst. > Add q54sj108a2 to index.rst. > Tristate in Kconfig is changed to "Delta Power Supplies Q54SJ108A2". > The non-standard attributes are added to debugfs. > Patch v7 changelog: > Use standard fuctions bin2hex and hex2bin. > The return of debugfs write is changed to count. > Drop the error checking of debugfs fuctions. > Use probe_new fuction. > Remove the .remove fuction. > Patch v8 changelog: > Use kstrtou8_from_user instead of hex2bin. > Remove included head files which are not used. > Done label in debugfs_read fuction is deleted. > Change email to send the patch. > Patch v9 changelog: > Fix the compile errors and warnings. > Patch v10 changelog: > Fix the reports from checkpatch. > Name of driver is changed to "q54sj108a2". > > Documentation/hwmon/index.rst | 1 + > Documentation/hwmon/q54sj108a2.rst | 54 ++++ > drivers/hwmon/pmbus/Kconfig | 9 + > drivers/hwmon/pmbus/Makefile | 1 + > drivers/hwmon/pmbus/q54sj108a2.c | 422 +++++++++++++++++++++++++++++ > 5 files changed, 487 insertions(+) > create mode 100644 Documentation/hwmon/q54sj108a2.rst > create mode 100644 drivers/hwmon/pmbus/q54sj108a2.c > > diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst > index b797db738225..4bb680b3c7ea 100644 > --- a/Documentation/hwmon/index.rst > +++ b/Documentation/hwmon/index.rst > @@ -148,6 +148,7 @@ Hardware Monitoring Kernel Drivers > powr1220 > pxe1610 > pwm-fan > + q54sj108a2 > raspberrypi-hwmon > sch5627 > sch5636 > diff --git a/Documentation/hwmon/q54sj108a2.rst b/Documentation/hwmon/q54sj108a2.rst > new file mode 100644 > index 000000000000..fabce671985a > --- /dev/null > +++ b/Documentation/hwmon/q54sj108a2.rst > @@ -0,0 +1,54 @@ > +.. SPDX-License-Identifier: GPL-2.0-or-later > + > +Kernel driver q54sj108a2 > +===================== > + > +Supported chips: > + > + * DELTA Q54SJ108A2NCAH, Q54SJ108A2NCDH, Q54SJ108A2NCPG, Q54SJ108A2NCPH > + > + Prefix: 'Q54SJ108A2' > + > + Addresses scanned: - > + > + Datasheet: https://filecenter.delta-china.com.cn/products/download/01/0102/datasheet/DS_Q54SJ108A2.pdf > + > +Authors: > + Xiao.ma <xiao.mx.ma@xxxxxxxxxxx> > + > + > +Description > +----------- > + > +This driver implements support for DELTA Q54SJ108A2NCAH, Q54SJ108A2NCDH, > +Q54SJ108A2NCPG, and Q54SJ108A2NCPH 1/4 Brick DC/DC Regulated Power Module > +with PMBus support. > + > +The driver is a client driver to the core PMBus driver. > +Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers. > + > + > +Usage Notes > +----------- > + > +This driver does not auto-detect devices. You will have to instantiate the > +devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for > +details. > + > + > +Sysfs entries > +------------- > + > +===================== ===== ================================================== > +curr1_alarm RO Output current alarm > +curr1_input RO Output current > +curr1_label RO 'iout1' > +in1_alarm RO Input voltage alarm > +in1_input RO Input voltage > +in1_label RO 'vin' > +in2_alarm RO Output voltage alarm > +in2_input RO Output voltage > +in2_label RO 'vout1' > +temp1_alarm RO Temperature alarm > +temp1_input RO Chip temperature > +===================== ===== ================================================== > diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig > index a25faf69fce3..01de280820ee 100644 > --- a/drivers/hwmon/pmbus/Kconfig > +++ b/drivers/hwmon/pmbus/Kconfig > @@ -229,6 +229,15 @@ config SENSORS_PXE1610 > This driver can also be built as a module. If so, the module will > be called pxe1610. > > +config SENSORS_Q54SJ108A2 > + tristate "Delta Power Supplies Q54SJ108A2" > + help > + If you say yes here you get hardware monitoring support for Delta > + Q54SJ108A2 series Power Supplies. > + > + This driver can also be built as a module. If so, the module will > + be called q54sj108a2. > + > config SENSORS_TPS40422 > tristate "TI TPS40422" > help > diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile > index 4c97ad0bd791..a50122cd455b 100644 > --- a/drivers/hwmon/pmbus/Makefile > +++ b/drivers/hwmon/pmbus/Makefile > @@ -26,6 +26,7 @@ obj-$(CONFIG_SENSORS_MAX34440) += max34440.o > obj-$(CONFIG_SENSORS_MAX8688) += max8688.o > obj-$(CONFIG_SENSORS_MP2975) += mp2975.o > obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o > +obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o > obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o > obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o > obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o > diff --git a/drivers/hwmon/pmbus/q54sj108a2.c b/drivers/hwmon/pmbus/q54sj108a2.c > new file mode 100644 > index 000000000000..cbeb1b1ea60c > --- /dev/null > +++ b/drivers/hwmon/pmbus/q54sj108a2.c > @@ -0,0 +1,422 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * Driver for Delta modules, Q54SJ108A2 series 1/4 Brick DC/DC > + * Regulated Power Module > + * > + * Copyright 2020 Delta LLC. > + */ > + > +#include <linux/debugfs.h> > +#include <linux/i2c.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include "pmbus.h" > + > +#define STORE_DEFAULT_ALL 0x11 > +#define ERASE_BLACKBOX_DATA 0xD1 > +#define READ_HISTORY_EVENT_NUMBER 0xD2 > +#define READ_HISTORY_EVENTS 0xE0 > +#define SET_HISTORY_EVENT_OFFSET 0xE1 > +#define PMBUS_FLASH_KEY_WRITE 0xEC > + > +enum chips { > + q54sj108a2 > +}; > + > +enum { > + Q54SJ108A2_DEBUGFS_OPERATION = 0, > + Q54SJ108A2_DEBUGFS_CLEARFAULT, > + Q54SJ108A2_DEBUGFS_WRITEPROTECT, > + Q54SJ108A2_DEBUGFS_STOREDEFAULT, > + Q54SJ108A2_DEBUGFS_VOOV_RESPONSE, > + Q54SJ108A2_DEBUGFS_IOOC_RESPONSE, > + Q54SJ108A2_DEBUGFS_PMBUS_VERSION, > + Q54SJ108A2_DEBUGFS_MFR_ID, > + Q54SJ108A2_DEBUGFS_MFR_MODEL, > + Q54SJ108A2_DEBUGFS_MFR_REVISION, > + Q54SJ108A2_DEBUGFS_MFR_LOCATION, > + Q54SJ108A2_DEBUGFS_BLACKBOX_ERASE, > + Q54SJ108A2_DEBUGFS_BLACKBOX_READ_OFFSET, > + Q54SJ108A2_DEBUGFS_BLACKBOX_SET_OFFSET, > + Q54SJ108A2_DEBUGFS_BLACKBOX_READ, > + Q54SJ108A2_DEBUGFS_FLASH_KEY, > + Q54SJ108A2_DEBUGFS_NUM_ENTRIES > +}; > + > +struct q54sj108a2_data { > + enum chips chip; > + struct i2c_client *client; > + > + int debugfs_entries[Q54SJ108A2_DEBUGFS_NUM_ENTRIES]; > +}; > + > +#define to_psu(x, y) container_of((x), struct q54sj108a2_data, debugfs_entries[(y)]) > + > +static struct pmbus_driver_info q54sj108a2_info[] = { > + [q54sj108a2] = { > + .pages = 1, > + > + /* Source : Delta Q54SJ108A2 */ > + .format[PSC_TEMPERATURE] = linear, > + .format[PSC_VOLTAGE_IN] = linear, > + .format[PSC_CURRENT_OUT] = linear, > + > + .func[0] = PMBUS_HAVE_VIN | > + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | > + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | > + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | > + PMBUS_HAVE_STATUS_INPUT, > + }, > +}; > + > +static ssize_t q54sj108a2_debugfs_read(struct file *file, char __user *buf, > + size_t count, loff_t *ppos) > +{ > + int rc; > + int *idxp = file->private_data; > + int idx = *idxp; > + struct q54sj108a2_data *psu = to_psu(idxp, idx); > + char data[I2C_SMBUS_BLOCK_MAX + 2] = { 0 }; > + char data_char[I2C_SMBUS_BLOCK_MAX + 2] = { 0 }; > + char *res; > + > + switch (idx) { > + case Q54SJ108A2_DEBUGFS_OPERATION: > + rc = i2c_smbus_read_byte_data(psu->client, PMBUS_OPERATION); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_WRITEPROTECT: > + rc = i2c_smbus_read_byte_data(psu->client, PMBUS_WRITE_PROTECT); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_VOOV_RESPONSE: > + rc = i2c_smbus_read_byte_data(psu->client, PMBUS_VOUT_OV_FAULT_RESPONSE); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_IOOC_RESPONSE: > + rc = i2c_smbus_read_byte_data(psu->client, PMBUS_IOUT_OC_FAULT_RESPONSE); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_PMBUS_VERSION: > + rc = i2c_smbus_read_byte_data(psu->client, PMBUS_REVISION); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_MFR_ID: > + rc = i2c_smbus_read_block_data(psu->client, PMBUS_MFR_ID, data); > + if (rc < 0) > + return rc; > + break; > + case Q54SJ108A2_DEBUGFS_MFR_MODEL: > + rc = i2c_smbus_read_block_data(psu->client, PMBUS_MFR_MODEL, data); > + if (rc < 0) > + return rc; > + break; > + case Q54SJ108A2_DEBUGFS_MFR_REVISION: > + rc = i2c_smbus_read_block_data(psu->client, PMBUS_MFR_REVISION, data); > + if (rc < 0) > + return rc; > + break; > + case Q54SJ108A2_DEBUGFS_MFR_LOCATION: > + rc = i2c_smbus_read_block_data(psu->client, PMBUS_MFR_LOCATION, data); > + if (rc < 0) > + return rc; > + break; > + case Q54SJ108A2_DEBUGFS_BLACKBOX_READ_OFFSET: > + rc = i2c_smbus_read_byte_data(psu->client, READ_HISTORY_EVENT_NUMBER); > + if (rc < 0) > + return rc; > + > + rc = snprintf(data, 3, "%02x", rc); > + break; > + case Q54SJ108A2_DEBUGFS_BLACKBOX_READ: > + rc = i2c_smbus_read_block_data(psu->client, READ_HISTORY_EVENTS, data); > + if (rc < 0) > + return rc; > + > + res = bin2hex(data, data_char, 32); > + rc = res - data; > + > + break; > + case Q54SJ108A2_DEBUGFS_FLASH_KEY: > + rc = i2c_smbus_read_block_data(psu->client, PMBUS_FLASH_KEY_WRITE, data); > + if (rc < 0) > + return rc; > + > + res = bin2hex(data, data_char, 4); > + rc = res - data; > + > + break; > + default: > + return -EINVAL; > + } > + > + data[rc] = '\n'; > + rc += 2; > + > + return simple_read_from_buffer(buf, count, ppos, data, rc); > +} > + > +static ssize_t q54sj108a2_debugfs_write(struct file *file, const char __user *buf, > + size_t count, loff_t *ppos) > +{ > + u8 flash_key[4]; > + u8 dst_data; > + ssize_t rc; > + int *idxp = file->private_data; > + int idx = *idxp; > + struct q54sj108a2_data *psu = to_psu(idxp, idx); > + > + rc = i2c_smbus_write_byte_data(psu->client, PMBUS_WRITE_PROTECT, 0); > + if (rc) > + return rc; > + > + switch (idx) { > + case Q54SJ108A2_DEBUGFS_OPERATION: > + rc = kstrtou8_from_user(buf, count, 0, &dst_data); > + if (rc < 0) > + return rc; > + > + rc = i2c_smbus_write_byte_data(psu->client, PMBUS_OPERATION, dst_data); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_CLEARFAULT: > + rc = i2c_smbus_write_byte(psu->client, PMBUS_CLEAR_FAULTS); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_STOREDEFAULT: > + flash_key[0] = 0x7E; > + flash_key[1] = 0x15; > + flash_key[2] = 0xDC; > + flash_key[3] = 0x42; > + rc = i2c_smbus_write_block_data(psu->client, PMBUS_FLASH_KEY_WRITE, 4, flash_key); > + if (rc < 0) > + return rc; > + > + rc = i2c_smbus_write_byte(psu->client, STORE_DEFAULT_ALL); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_VOOV_RESPONSE: > + rc = kstrtou8_from_user(buf, count, 0, &dst_data); > + if (rc < 0) > + return rc; > + > + rc = i2c_smbus_write_byte_data(psu->client, PMBUS_VOUT_OV_FAULT_RESPONSE, dst_data); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_IOOC_RESPONSE: > + rc = kstrtou8_from_user(buf, count, 0, &dst_data); > + if (rc < 0) > + return rc; > + > + rc = i2c_smbus_write_byte_data(psu->client, PMBUS_IOUT_OC_FAULT_RESPONSE, dst_data); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_BLACKBOX_ERASE: > + rc = i2c_smbus_write_byte(psu->client, ERASE_BLACKBOX_DATA); > + if (rc < 0) > + return rc; > + > + break; > + case Q54SJ108A2_DEBUGFS_BLACKBOX_SET_OFFSET: > + rc = kstrtou8_from_user(buf, count, 0, &dst_data); > + if (rc < 0) > + return rc; > + > + rc = i2c_smbus_write_byte_data(psu->client, SET_HISTORY_EVENT_OFFSET, dst_data); > + if (rc < 0) > + return rc; > + > + break; > + default: > + return -EINVAL; > + } > + > + return count; > +} > + > +static const struct file_operations q54sj108a2_fops = { > + .llseek = noop_llseek, > + .read = q54sj108a2_debugfs_read, > + .write = q54sj108a2_debugfs_write, > + .open = simple_open, > +}; > + > +static const struct i2c_device_id q54sj108a2_id[] = { > + { "q54sj108a2", q54sj108a2 }, > + { }, > +}; > + > +MODULE_DEVICE_TABLE(i2c, q54sj108a2_id); > + > +static int q54sj108a2_probe(struct i2c_client *client) > +{ > + struct device *dev = &client->dev; > + u8 buf[I2C_SMBUS_BLOCK_MAX + 1]; > + enum chips chip_id; > + int ret, i; > + struct dentry *debugfs; > + struct dentry *q54sj108a2_dir; > + struct q54sj108a2_data *psu; > + > + if (!i2c_check_functionality(client->adapter, > + I2C_FUNC_SMBUS_BYTE_DATA | > + I2C_FUNC_SMBUS_WORD_DATA | > + I2C_FUNC_SMBUS_BLOCK_DATA)) > + return -ENODEV; > + > + if (client->dev.of_node) > + chip_id = (enum chips)(unsigned long)of_device_get_match_data(dev); > + else > + chip_id = i2c_match_id(q54sj108a2_id, client)->driver_data; > + > + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf); > + if (ret < 0) { > + dev_err(&client->dev, "Failed to read Manufacturer ID\n"); > + return ret; > + } > + if (ret != 5 || strncmp(buf, "DELTA", 5)) { > + buf[ret] = '\0'; > + dev_err(dev, "Unsupported Manufacturer ID '%s'\n", buf); > + return -ENODEV; > + } > + > + /* > + * The chips support reading PMBUS_MFR_MODEL. > + */ > + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf); > + if (ret < 0) { > + dev_err(dev, "Failed to read Manufacturer Model\n"); > + return ret; > + } > + if (ret != 14 || strncmp(buf, "Q54SJ108A2", 10)) { > + buf[ret] = '\0'; > + dev_err(dev, "Unsupported Manufacturer Model '%s'\n", buf); > + return -ENODEV; > + } > + > + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_REVISION, buf); > + if (ret < 0) { > + dev_err(dev, "Failed to read Manufacturer Revision\n"); > + return ret; > + } > + if (ret != 4 || buf[0] != 'S') { > + buf[ret] = '\0'; > + dev_err(dev, "Unsupported Manufacturer Revision '%s'\n", buf); > + return -ENODEV; > + } > + > + ret = pmbus_do_probe(client, &q54sj108a2_info[chip_id]); > + if (ret) > + return ret; > + > + psu = devm_kzalloc(&client->dev, sizeof(*psu), GFP_KERNEL); > + if (!psu) > + return 0; > + > + psu->client = client; > + > + debugfs = pmbus_get_debugfs_dir(client); > + > + q54sj108a2_dir = debugfs_create_dir(client->name, debugfs); > + > + for (i = 0; i < Q54SJ108A2_DEBUGFS_NUM_ENTRIES; ++i) > + psu->debugfs_entries[i] = i; > + > + debugfs_create_file("operation", 0644, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_OPERATION], > + &q54sj108a2_fops); > + debugfs_create_file("clear_fault", 0200, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_CLEARFAULT], > + &q54sj108a2_fops); > + debugfs_create_file("write_protect", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_WRITEPROTECT], > + &q54sj108a2_fops); > + debugfs_create_file("store_default", 0200, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_STOREDEFAULT], > + &q54sj108a2_fops); > + debugfs_create_file("vo_ov_response", 0644, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_VOOV_RESPONSE], > + &q54sj108a2_fops); > + debugfs_create_file("io_oc_response", 0644, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_IOOC_RESPONSE], > + &q54sj108a2_fops); > + debugfs_create_file("pmbus_revision", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_PMBUS_VERSION], > + &q54sj108a2_fops); > + debugfs_create_file("mfr_id", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_MFR_ID], > + &q54sj108a2_fops); > + debugfs_create_file("mfr_model", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_MFR_MODEL], > + &q54sj108a2_fops); > + debugfs_create_file("mfr_revision", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_MFR_REVISION], > + &q54sj108a2_fops); > + debugfs_create_file("mfr_location", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_MFR_LOCATION], > + &q54sj108a2_fops); > + debugfs_create_file("blackbox_erase", 0200, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_BLACKBOX_ERASE], > + &q54sj108a2_fops); > + debugfs_create_file("blackbox_read_offset", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_BLACKBOX_READ_OFFSET], > + &q54sj108a2_fops); > + debugfs_create_file("blackbox_set_offset", 0200, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_BLACKBOX_SET_OFFSET], > + &q54sj108a2_fops); > + debugfs_create_file("blackbox_read", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_BLACKBOX_READ], > + &q54sj108a2_fops); > + debugfs_create_file("flash_key", 0444, q54sj108a2_dir, > + &psu->debugfs_entries[Q54SJ108A2_DEBUGFS_FLASH_KEY], > + &q54sj108a2_fops); > + > + return 0; > +} > + > +static const struct of_device_id q54sj108a2_of_match[] = { > + { .compatible = "delta,q54sj108a2", .data = (void *)q54sj108a2 }, > + { }, > +}; > + > +MODULE_DEVICE_TABLE(of, q54sj108a2_of_match); > + > +static struct i2c_driver q54sj108a2_driver = { > + .driver = { > + .name = "q54sj108a2", > + .of_match_table = q54sj108a2_of_match, > + }, > + .probe_new = q54sj108a2_probe, > + .id_table = q54sj108a2_id, > +}; > + > +module_i2c_driver(q54sj108a2_driver); > + > +MODULE_AUTHOR("Xiao.Ma <xiao.mx.ma@xxxxxxxxxxx>"); > +MODULE_DESCRIPTION("PMBus driver for Delta Q54SJ108A2 series modules"); > +MODULE_LICENSE("GPL");
