diff options
Diffstat (limited to 'drivers/hwmon/pmbus')
| -rw-r--r-- | drivers/hwmon/pmbus/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/Makefile | 1 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/bel-pfe.c | 131 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/ibm-cffps.c | 74 |
4 files changed, 199 insertions, 16 deletions
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index d62d69bb7e49..59859979571d 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -36,6 +36,15 @@ config SENSORS_ADM1275 This driver can also be built as a module. If so, the module will be called adm1275. +config SENSORS_BEL_PFE + tristate "Bel PFE Compatible Power Supplies" + help + If you say yes here you get hardware monitoring support for BEL + PFE1100 and PFE3000 Power Supplies. + + This driver can also be built as a module. If so, the module will + be called bel-pfe. + config SENSORS_IBM_CFFPS tristate "IBM Common Form Factor Power Supply" depends on LEDS_CLASS diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 03bacfcfd660..3f8c1014938b 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_PMBUS) += pmbus_core.o obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o +obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c new file mode 100644 index 000000000000..f236e18f45a5 --- /dev/null +++ b/drivers/hwmon/pmbus/bel-pfe.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for BEL PFE family power supplies. + * + * Copyright (c) 2019 Facebook Inc. + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pmbus.h> + +#include "pmbus.h" + +enum chips {pfe1100, pfe3000}; + +/* + * Disable status check for pfe3000 devices, because some devices report + * communication error (invalid command) for VOUT_MODE command (0x20) + * although correct VOUT_MODE (0x16) is returned: it leads to incorrect + * exponent in linear mode. + */ +static struct pmbus_platform_data pfe3000_plat_data = { + .flags = PMBUS_SKIP_STATUS_CHECK, +}; + +static struct pmbus_driver_info pfe_driver_info[] = { + [pfe1100] = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_FAN] = linear, + + .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_POUT | + PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | + PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_FAN12, + }, + + [pfe3000] = { + .pages = 7, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_FAN] = linear, + + /* Page 0: V1. */ + .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 | + PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | + PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_VCAP, + + /* Page 1: Vsb. */ + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_POUT, + + /* + * Page 2: V1 Ishare. + * Page 3: Reserved. + * Page 4: V1 Cathode. + * Page 5: Vsb Cathode. + * Page 6: V1 Sense. + */ + .func[2] = PMBUS_HAVE_VOUT, + .func[4] = PMBUS_HAVE_VOUT, + .func[5] = PMBUS_HAVE_VOUT, + .func[6] = PMBUS_HAVE_VOUT, + }, +}; + +static int pfe_pmbus_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int model; + + model = (int)id->driver_data; + + /* + * PFE3000-12-069RA devices may not stay in page 0 during device + * probe which leads to probe failure (read status word failed). + * So let's set the device to page 0 at the beginning. + */ + if (model == pfe3000) { + client->dev.platform_data = &pfe3000_plat_data; + i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0); + } + + return pmbus_do_probe(client, id, &pfe_driver_info[model]); +} + +static const struct i2c_device_id pfe_device_id[] = { + {"pfe1100", pfe1100}, + {"pfe3000", pfe3000}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, pfe_device_id); + +static struct i2c_driver pfe_pmbus_driver = { + .driver = { + .name = "bel-pfe", + }, + .probe = pfe_pmbus_probe, + .remove = pmbus_do_remove, + .id_table = pfe_device_id, +}; + +module_i2c_driver(pfe_pmbus_driver); + +MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>"); +MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/pmbus/ibm-cffps.c b/drivers/hwmon/pmbus/ibm-cffps.c index d44745e498e7..d359b76bcb36 100644 --- a/drivers/hwmon/pmbus/ibm-cffps.c +++ b/drivers/hwmon/pmbus/ibm-cffps.c @@ -3,6 +3,7 @@ * Copyright 2017 IBM Corp. */ +#include <linux/bitfield.h> #include <linux/bitops.h> #include <linux/debugfs.h> #include <linux/device.h> @@ -29,6 +30,10 @@ #define CFFPS_INPUT_HISTORY_CMD 0xD6 #define CFFPS_INPUT_HISTORY_SIZE 100 +#define CFFPS_CCIN_VERSION GENMASK(15, 8) +#define CFFPS_CCIN_VERSION_1 0x2b +#define CFFPS_CCIN_VERSION_2 0x2e + /* STATUS_MFR_SPECIFIC bits */ #define CFFPS_MFR_FAN_FAULT BIT(0) #define CFFPS_MFR_THERMAL_FAULT BIT(1) @@ -39,9 +44,13 @@ #define CFFPS_MFR_VAUX_FAULT BIT(6) #define CFFPS_MFR_CURRENT_SHARE_WARNING BIT(7) +/* + * LED off state actually relinquishes LED control to PSU firmware, so it can + * turn on the LED for faults. + */ +#define CFFPS_LED_OFF 0 #define CFFPS_LED_BLINK BIT(0) #define CFFPS_LED_ON BIT(1) -#define CFFPS_LED_OFF BIT(2) #define CFFPS_BLINK_RATE_MS 250 enum { @@ -54,7 +63,7 @@ enum { CFFPS_DEBUGFS_NUM_ENTRIES }; -enum versions { cffps1, cffps2 }; +enum versions { cffps1, cffps2, cffps_unknown }; struct ibm_cffps_input_history { struct mutex update_lock; @@ -292,28 +301,38 @@ static int ibm_cffps_read_word_data(struct i2c_client *client, int page, return rc; } -static void ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, - enum led_brightness brightness) +static int ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness brightness) { int rc; + u8 next_led_state; struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led); if (brightness == LED_OFF) { - psu->led_state = CFFPS_LED_OFF; + next_led_state = CFFPS_LED_OFF; } else { brightness = LED_FULL; + if (psu->led_state != CFFPS_LED_BLINK) - psu->led_state = CFFPS_LED_ON; + next_led_state = CFFPS_LED_ON; + else + next_led_state = CFFPS_LED_BLINK; } + dev_dbg(&psu->client->dev, "LED brightness set: %d. Command: %d.\n", + brightness, next_led_state); + pmbus_set_page(psu->client, 0); rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD, - psu->led_state); + next_led_state); if (rc < 0) - return; + return rc; + psu->led_state = next_led_state; led_cdev->brightness = brightness; + + return 0; } static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev, @@ -323,10 +342,7 @@ static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev, int rc; struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led); - psu->led_state = CFFPS_LED_BLINK; - - if (led_cdev->brightness == LED_OFF) - return 0; + dev_dbg(&psu->client->dev, "LED blink set.\n"); pmbus_set_page(psu->client, 0); @@ -335,6 +351,8 @@ static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev, if (rc < 0) return rc; + psu->led_state = CFFPS_LED_BLINK; + led_cdev->brightness = LED_FULL; *delay_on = CFFPS_BLINK_RATE_MS; *delay_off = CFFPS_BLINK_RATE_MS; @@ -351,7 +369,7 @@ static void ibm_cffps_create_led_class(struct ibm_cffps *psu) client->addr); psu->led.name = psu->led_name; psu->led.max_brightness = LED_FULL; - psu->led.brightness_set = ibm_cffps_led_brightness_set; + psu->led.brightness_set_blocking = ibm_cffps_led_brightness_set; psu->led.blink_set = ibm_cffps_led_blink_set; rc = devm_led_classdev_register(dev, &psu->led); @@ -395,7 +413,7 @@ static int ibm_cffps_probe(struct i2c_client *client, const struct i2c_device_id *id) { int i, rc; - enum versions vs; + enum versions vs = cffps_unknown; struct dentry *debugfs; struct dentry *ibm_cffps_dir; struct ibm_cffps *psu; @@ -405,8 +423,27 @@ static int ibm_cffps_probe(struct i2c_client *client, vs = (enum versions)md; else if (id) vs = (enum versions)id->driver_data; - else - vs = cffps1; + + if (vs == cffps_unknown) { + u16 ccin_version = CFFPS_CCIN_VERSION_1; + int ccin = i2c_smbus_read_word_swapped(client, CFFPS_CCIN_CMD); + + if (ccin > 0) + ccin_version = FIELD_GET(CFFPS_CCIN_VERSION, ccin); + + switch (ccin_version) { + default: + case CFFPS_CCIN_VERSION_1: + vs = cffps1; + break; + case CFFPS_CCIN_VERSION_2: + vs = cffps2; + break; + } + + /* Set the client name to include the version number. */ + snprintf(client->name, I2C_NAME_SIZE, "cffps%d", vs + 1); + } client->dev.platform_data = &ibm_cffps_pdata; rc = pmbus_do_probe(client, id, &ibm_cffps_info[vs]); @@ -465,6 +502,7 @@ static int ibm_cffps_probe(struct i2c_client *client, static const struct i2c_device_id ibm_cffps_id[] = { { "ibm_cffps1", cffps1 }, { "ibm_cffps2", cffps2 }, + { "ibm_cffps", cffps_unknown }, {} }; MODULE_DEVICE_TABLE(i2c, ibm_cffps_id); @@ -478,6 +516,10 @@ static const struct of_device_id ibm_cffps_of_match[] = { .compatible = "ibm,cffps2", .data = (void *)cffps2 }, + { + .compatible = "ibm,cffps", + .data = (void *)cffps_unknown + }, {} }; MODULE_DEVICE_TABLE(of, ibm_cffps_of_match); |