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76 lines
1.8 KiB
76 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Hardware monitoring driver for STMicroelectronics digital controller PM6764TR |
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*/ |
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#include <linux/err.h> |
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#include <linux/i2c.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/pmbus.h> |
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#include "pmbus.h" |
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#define PM6764TR_PMBUS_READ_VOUT 0xD4 |
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static int pm6764tr_read_word_data(struct i2c_client *client, int page, int phase, int reg) |
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{ |
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int ret; |
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switch (reg) { |
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case PMBUS_VIRT_READ_VMON: |
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ret = pmbus_read_word_data(client, page, phase, PM6764TR_PMBUS_READ_VOUT); |
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break; |
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default: |
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ret = -ENODATA; |
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break; |
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} |
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return ret; |
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} |
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static struct pmbus_driver_info pm6764tr_info = { |
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.pages = 1, |
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.format[PSC_VOLTAGE_IN] = linear, |
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.format[PSC_VOLTAGE_OUT] = vid, |
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.format[PSC_TEMPERATURE] = linear, |
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.format[PSC_CURRENT_OUT] = linear, |
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.format[PSC_POWER] = linear, |
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN | |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON | |
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PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT | |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
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.read_word_data = pm6764tr_read_word_data, |
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}; |
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static int pm6764tr_probe(struct i2c_client *client) |
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{ |
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return pmbus_do_probe(client, &pm6764tr_info); |
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} |
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static const struct i2c_device_id pm6764tr_id[] = { |
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{"pm6764tr", 0}, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(i2c, pm6764tr_id); |
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static const struct of_device_id __maybe_unused pm6764tr_of_match[] = { |
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{.compatible = "st,pm6764tr"}, |
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{} |
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}; |
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/* This is the driver that will be inserted */ |
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static struct i2c_driver pm6764tr_driver = { |
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.driver = { |
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.name = "pm6764tr", |
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.of_match_table = of_match_ptr(pm6764tr_of_match), |
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}, |
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.probe_new = pm6764tr_probe, |
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.id_table = pm6764tr_id, |
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}; |
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module_i2c_driver(pm6764tr_driver); |
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MODULE_AUTHOR("Charles Hsu"); |
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MODULE_DESCRIPTION("PMBus driver for ST PM6764TR"); |
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MODULE_LICENSE("GPL"); |
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MODULE_IMPORT_NS(PMBUS);
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