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4a9e6a9230
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify indention and usage of commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/65b77bcd452752c36d866069cc5790b26d2bf8dc.1778688803.git.u.kleine-koenig@baylibre.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for BEL PFE family power supplies.
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*
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* Copyright (c) 2019 Facebook Inc.
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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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enum chips {pfe1100, pfe3000};
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/*
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* Disable status check because some devices report communication error
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* (invalid command) for VOUT_MODE command (0x20) although the correct
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* VOUT_MODE (0x16) is returned: it leads to incorrect exponent in linear
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* mode.
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* This affects both pfe3000 and pfe1100.
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*/
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static struct pmbus_platform_data pfe_plat_data = {
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.flags = PMBUS_SKIP_STATUS_CHECK,
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};
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static struct pmbus_driver_info pfe_driver_info[] = {
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[pfe1100] = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_FAN] = linear,
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.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_POUT |
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PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
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PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
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PMBUS_HAVE_STATUS_TEMP |
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PMBUS_HAVE_FAN12,
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},
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[pfe3000] = {
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.pages = 7,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_FAN] = linear,
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/* Page 0: V1. */
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.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 |
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PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
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PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
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PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP |
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PMBUS_HAVE_VCAP,
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/* Page 1: Vsb. */
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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_POUT,
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/*
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* Page 2: V1 Ishare.
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* Page 3: Reserved.
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* Page 4: V1 Cathode.
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* Page 5: Vsb Cathode.
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* Page 6: V1 Sense.
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*/
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.func[2] = PMBUS_HAVE_VOUT,
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.func[4] = PMBUS_HAVE_VOUT,
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.func[5] = PMBUS_HAVE_VOUT,
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.func[6] = PMBUS_HAVE_VOUT,
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},
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};
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static int pfe_pmbus_probe(struct i2c_client *client)
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{
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int model = (uintptr_t)i2c_get_match_data(client);
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client->dev.platform_data = &pfe_plat_data;
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/*
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* PFE3000-12-069RA devices may not stay in page 0 during device
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* probe which leads to probe failure (read status word failed).
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* So let's set the device to page 0 at the beginning.
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*/
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if (model == pfe3000)
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i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
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return pmbus_do_probe(client, &pfe_driver_info[model]);
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}
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static const struct i2c_device_id pfe_device_id[] = {
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{ .name = "pfe1100", .driver_data = pfe1100 },
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{ .name = "pfe3000", .driver_data = pfe3000 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, pfe_device_id);
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static struct i2c_driver pfe_pmbus_driver = {
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.driver = {
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.name = "bel-pfe",
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},
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.probe = pfe_pmbus_probe,
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.id_table = pfe_device_id,
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};
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module_i2c_driver(pfe_pmbus_driver);
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MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>");
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MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS("PMBUS");
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