diff options
Diffstat (limited to 'drivers/hwmon/pmbus/pmbus.c')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus.c | 119 |
1 files changed, 74 insertions, 45 deletions
diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c index 7718e58dbda5..920cd5408141 100644 --- a/drivers/hwmon/pmbus/pmbus.c +++ b/drivers/hwmon/pmbus/pmbus.c @@ -1,21 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Hardware monitoring driver for PMBus devices * * Copyright (c) 2010, 2011 Ericsson AB. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/kernel.h> @@ -28,6 +15,13 @@ #include <linux/pmbus.h> #include "pmbus.h" +struct pmbus_device_info { + int pages; + u32 flags; +}; + +static const struct i2c_device_id pmbus_id[]; + /* * Find sensor groups and status registers on each page. */ @@ -109,19 +103,23 @@ static int pmbus_identify(struct i2c_client *client, if (pmbus_check_byte_register(client, 0, PMBUS_PAGE)) { int page; + info->pages = PMBUS_PAGES; + for (page = 1; page < PMBUS_PAGES; page++) { - if (pmbus_set_page(client, page) < 0) + if (pmbus_set_page(client, page, 0xff) < 0) break; } - pmbus_set_page(client, 0); + pmbus_set_page(client, 0, 0xff); info->pages = page; } else { info->pages = 1; } + + pmbus_clear_faults(client); } if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE)) { - int vout_mode; + int vout_mode, i; vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); if (vout_mode >= 0 && vout_mode != 0xff) { @@ -130,7 +128,8 @@ static int pmbus_identify(struct i2c_client *client, break; case 1: info->format[PSC_VOLTAGE_OUT] = vid; - info->vrm_version = vr11; + for (i = 0; i < info->pages; i++) + info->vrm_version[i] = vr11; break; case 2: info->format[PSC_VOLTAGE_OUT] = direct; @@ -164,57 +163,87 @@ abort: return ret; } -static int pmbus_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int pmbus_probe(struct i2c_client *client) { struct pmbus_driver_info *info; struct pmbus_platform_data *pdata = NULL; struct device *dev = &client->dev; + struct pmbus_device_info *device_info; info = devm_kzalloc(dev, sizeof(struct pmbus_driver_info), GFP_KERNEL); if (!info) return -ENOMEM; - if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps800") || - !strcmp(id->name, "sgd009")) { + device_info = (struct pmbus_device_info *)i2c_match_id(pmbus_id, client)->driver_data; + if (device_info->flags) { pdata = devm_kzalloc(dev, sizeof(struct pmbus_platform_data), GFP_KERNEL); if (!pdata) return -ENOMEM; - pdata->flags = PMBUS_SKIP_STATUS_CHECK; + pdata->flags = device_info->flags; } - info->pages = id->driver_data; + info->pages = device_info->pages; info->identify = pmbus_identify; dev->platform_data = pdata; - return pmbus_do_probe(client, id, info); + return pmbus_do_probe(client, info); } +static const struct pmbus_device_info pmbus_info_one = { + .pages = 1, + .flags = 0 +}; + +static const struct pmbus_device_info pmbus_info_zero = { + .pages = 0, + .flags = 0 +}; + +static const struct pmbus_device_info pmbus_info_one_skip = { + .pages = 1, + .flags = PMBUS_SKIP_STATUS_CHECK +}; + +static const struct pmbus_device_info pmbus_info_one_status = { + .pages = 1, + .flags = PMBUS_READ_STATUS_AFTER_FAILED_CHECK +}; + /* * Use driver_data to set the number of pages supported by the chip. */ static const struct i2c_device_id pmbus_id[] = { - {"adp4000", 1}, - {"bmr453", 1}, - {"bmr454", 1}, - {"dps460", 1}, - {"dps800", 1}, - {"mdt040", 1}, - {"ncp4200", 1}, - {"ncp4208", 1}, - {"pdt003", 1}, - {"pdt006", 1}, - {"pdt012", 1}, - {"pmbus", 0}, - {"sgd009", 1}, - {"tps40400", 1}, - {"tps544b20", 1}, - {"tps544b25", 1}, - {"tps544c20", 1}, - {"tps544c25", 1}, - {"udt020", 1}, + {"adp4000", (kernel_ulong_t)&pmbus_info_one}, + {"bmr310", (kernel_ulong_t)&pmbus_info_one_status}, + {"bmr453", (kernel_ulong_t)&pmbus_info_one}, + {"bmr454", (kernel_ulong_t)&pmbus_info_one}, + {"bmr456", (kernel_ulong_t)&pmbus_info_one}, + {"bmr457", (kernel_ulong_t)&pmbus_info_one}, + {"bmr458", (kernel_ulong_t)&pmbus_info_one_status}, + {"bmr480", (kernel_ulong_t)&pmbus_info_one_status}, + {"bmr490", (kernel_ulong_t)&pmbus_info_one_status}, + {"bmr491", (kernel_ulong_t)&pmbus_info_one_status}, + {"bmr492", (kernel_ulong_t)&pmbus_info_one}, + {"dps460", (kernel_ulong_t)&pmbus_info_one_skip}, + {"dps650ab", (kernel_ulong_t)&pmbus_info_one_skip}, + {"dps800", (kernel_ulong_t)&pmbus_info_one_skip}, + {"max20796", (kernel_ulong_t)&pmbus_info_one}, + {"mdt040", (kernel_ulong_t)&pmbus_info_one}, + {"ncp4200", (kernel_ulong_t)&pmbus_info_one}, + {"ncp4208", (kernel_ulong_t)&pmbus_info_one}, + {"pdt003", (kernel_ulong_t)&pmbus_info_one}, + {"pdt006", (kernel_ulong_t)&pmbus_info_one}, + {"pdt012", (kernel_ulong_t)&pmbus_info_one}, + {"pmbus", (kernel_ulong_t)&pmbus_info_zero}, + {"sgd009", (kernel_ulong_t)&pmbus_info_one_skip}, + {"tps40400", (kernel_ulong_t)&pmbus_info_one}, + {"tps544b20", (kernel_ulong_t)&pmbus_info_one}, + {"tps544b25", (kernel_ulong_t)&pmbus_info_one}, + {"tps544c20", (kernel_ulong_t)&pmbus_info_one}, + {"tps544c25", (kernel_ulong_t)&pmbus_info_one}, + {"udt020", (kernel_ulong_t)&pmbus_info_one}, {} }; @@ -226,7 +255,6 @@ static struct i2c_driver pmbus_driver = { .name = "pmbus", }, .probe = pmbus_probe, - .remove = pmbus_do_remove, .id_table = pmbus_id, }; @@ -235,3 +263,4 @@ module_i2c_driver(pmbus_driver); MODULE_AUTHOR("Guenter Roeck"); MODULE_DESCRIPTION("Generic PMBus driver"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("PMBUS"); |