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authorAlexandru Tachici <alexandru.tachici@analog.com>2020-08-12 17:20:50 +0300
committerGuenter Roeck <linux@roeck-us.net>2020-09-23 19:42:40 +0300
commit9514a22866ba1300c7e3f6aab2e558bb30679743 (patch)
treee2f73a943b6be7b7d4703bbd91df82326da43505 /drivers/hwmon
parentd2e08eba09a5e1a46e09f93ce46f06414ab90e8a (diff)
downloadlinux-9514a22866ba1300c7e3f6aab2e558bb30679743.tar.xz
hwmon: (pmbus) Add support for ADM1266
Add pmbus probing driver for the adm1266 Cascadable Super Sequencer with Margin Control and Fault Recording. Driver is using the pmbus_core, creating sysfs files under hwmon for inputs: vh1->vh4 and vp1->vp13. Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Link: https://lore.kernel.org/r/20200812142055.9213-2-alexandru.tachici@analog.com [groeck: Use .probe_new function, adjust for changed pmbus_do_probe API] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/pmbus/Kconfig9
-rw-r--r--drivers/hwmon/pmbus/Makefile1
-rw-r--r--drivers/hwmon/pmbus/adm1266.c65
3 files changed, 75 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index e35db489b76f..890f08be7244 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -26,6 +26,15 @@ config SENSORS_PMBUS
This driver can also be built as a module. If so, the module will
be called pmbus.
+config SENSORS_ADM1266
+ tristate "Analog Devices ADM1266 Sequencer"
+ help
+ If you say yes here you get hardware monitoring support for Analog
+ Devices ADM1266 Cascadable Super Sequencer.
+
+ This driver can also be built as a module. If so, the module will
+ be called adm1266.
+
config SENSORS_ADM1275
tristate "Analog Devices ADM1275 and compatibles"
help
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index c4b15db996ad..da41d22be1c9 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -5,6 +5,7 @@
obj-$(CONFIG_PMBUS) += pmbus_core.o
obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
+obj-$(CONFIG_SENSORS_ADM1266) += adm1266.o
obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
diff --git a/drivers/hwmon/pmbus/adm1266.c b/drivers/hwmon/pmbus/adm1266.c
new file mode 100644
index 000000000000..9c75958c2969
--- /dev/null
+++ b/drivers/hwmon/pmbus/adm1266.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ADM1266 - Cascadable Super Sequencer with Margin
+ * Control and Fault Recording
+ *
+ * Copyright 2020 Analog Devices Inc.
+ */
+
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include "pmbus.h"
+#include <linux/slab.h>
+
+struct adm1266_data {
+ struct pmbus_driver_info info;
+ struct i2c_client *client;
+};
+
+static int adm1266_probe(struct i2c_client *client)
+{
+ struct adm1266_data *data;
+ int i;
+
+ data = devm_kzalloc(&client->dev, sizeof(struct adm1266_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ data->info.pages = 17;
+ data->info.format[PSC_VOLTAGE_OUT] = linear;
+ for (i = 0; i < data->info.pages; i++)
+ data->info.func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
+
+ return pmbus_do_probe(client, &data->info);
+}
+
+static const struct of_device_id adm1266_of_match[] = {
+ { .compatible = "adi,adm1266" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adm1266_of_match);
+
+static const struct i2c_device_id adm1266_id[] = {
+ { "adm1266", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adm1266_id);
+
+static struct i2c_driver adm1266_driver = {
+ .driver = {
+ .name = "adm1266",
+ .of_match_table = adm1266_of_match,
+ },
+ .probe_new = adm1266_probe,
+ .remove = pmbus_do_remove,
+ .id_table = adm1266_id,
+};
+
+module_i2c_driver(adm1266_driver);
+
+MODULE_AUTHOR("Alexandru Tachici <alexandru.tachici@analog.com>");
+MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1266");
+MODULE_LICENSE("GPL v2");