From: Maxim Sloyko <[email protected]>
Intersil ISL68137 is a digital output 7-phase configurable PWM
controller with an AVSBus interface.
Signed-off-by: Maxim Sloyko <[email protected]>
Signed-off-by: Robert Lippert <[email protected]>
Signed-off-by: Patrick Venture <[email protected]>
---
v5:
Drop extra parens
Drop extra parameter check
v4:
Use kstrtobool
Cleanup parens
Use rc instead of temporary int
Delete unnecessary coment
Add remove to driver structure
v3:
Added missing driver documentation
Cleaned up goto statements.
Add missing error check on pmbus_read_word_data
Transitioned to use SENSOR_DEVICE_ATTR_RW
Renamed enabled attribute to enable
Set up an attribute_group for the enable attribute and added to pmbus_info
Removed the boilerplate driver remove method
v2:
Fixed bad header ordering.
v1:
Original new patchset with fixes from Rob Lippert.
---
Documentation/hwmon/isl68137 | 72 ++++++++++++++
drivers/hwmon/pmbus/Kconfig | 9 ++
drivers/hwmon/pmbus/Makefile | 1 +
drivers/hwmon/pmbus/isl68137.c | 172 +++++++++++++++++++++++++++++++++
4 files changed, 254 insertions(+)
create mode 100644 Documentation/hwmon/isl68137
create mode 100644 drivers/hwmon/pmbus/isl68137.c
diff --git a/Documentation/hwmon/isl68137 b/Documentation/hwmon/isl68137
new file mode 100644
index 0000000000000..92e5c5fc5b777
--- /dev/null
+++ b/Documentation/hwmon/isl68137
@@ -0,0 +1,72 @@
+Kernel driver isl68137
+======================
+
+Supported chips:
+ * Intersil ISL68137
+ Prefix: 'isl68137'
+ Addresses scanned: -
+ Datasheet: Publicly available at the Intersil website
+ https://www.intersil.com/content/dam/Intersil/documents/isl6/isl68137.pdf
+
+Authors:
+ Maxim Sloyko <[email protected]>
+ Robert Lippert <[email protected]>
+ Patrick Venture <[email protected]>
+
+Description
+-----------
+
+Intersil ISL68137 is a digital output 7-phase configurable PWM
+controller with an AVSBus interface.
+
+Usage Notes
+-----------
+
+This driver does not probe for PMBus devices. You will have to instantiate
+devices explicitly.
+
+The ISL68137 AVS operation mode must be enabled/disabled at runtime.
+
+Beyond the normal sysfs pmbus attributes, the driver exposes a control attribute.
+
+Additional Sysfs attributes
+---------------------------
+
+avs(0|1)_enable Controls the AVS state of each rail.
+
+curr1_label "iin"
+curr1_input Measured input current
+curr1_crit Critical maximum current
+curr1_crit_alarm Current critical high alarm
+
+curr[2-3]_label "iout[1-2]"
+curr[2-3]_input Measured output current
+curr[2-3]_crit Critical maximum current
+curr[2-3]_crit_alarm Current critical high alarm
+
+in1_label "vin"
+in1_input Measured input voltage
+in1_lcrit Critical minimum input voltage
+in1_lcrit_alarm Input voltage critical low alarm
+in1_crit Critical maximum input voltage
+in1_crit_alarm Input voltage critical high alarm
+
+in[2-3]_label "vout[1-2]"
+in[2-3]_input Measured output voltage
+in[2-3]_lcrit Critical minimum output voltage
+in[2-3]_lcrit_alarm Output voltage critical low alarm
+in[2-3]_crit Critical maximum output voltage
+in[2-3]_crit_alarm Output voltage critical high alarm
+
+power1_label "pin"
+power1_input Measured input power
+power1_alarm Input power high alarm
+
+power[2-3]_label "pout[1-2]"
+power[2-3]_input Measured output power
+
+temp[1-3]_input Measured temperature
+temp[1-3]_crit Critical high temperature
+temp[1-3]_crit_alarm Chip temperature critical high alarm
+temp[1-3]_max Maximum temperature
+temp[1-3]_max_alarm Chip temperature high alarm
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index de87abab990e5..7edab7e30eaf9 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -63,6 +63,15 @@ config SENSORS_IR38064
This driver can also be built as a module. If so, the module will
be called ir38064.
+config SENSORS_ISL68137
+ tristate "Intersil ISL68137"
+ help
+ If you say yes here you get hardware monitoring support for Intersil
+ ISL68137.
+
+ This driver can also be built as a module. If so, the module will
+ be called isl68137.
+
config SENSORS_LM25066
tristate "National Semiconductor LM25066 and compatibles"
help
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index 7d1fa6b3c8c93..2219b93003167 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
obj-$(CONFIG_SENSORS_IR35221) += ir35221.o
obj-$(CONFIG_SENSORS_IR38064) += ir38064.o
+obj-$(CONFIG_SENSORS_ISL68137) += isl68137.o
obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o
diff --git a/drivers/hwmon/pmbus/isl68137.c b/drivers/hwmon/pmbus/isl68137.c
new file mode 100644
index 0000000000000..4140c52d6f124
--- /dev/null
+++ b/drivers/hwmon/pmbus/isl68137.c
@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Hardware monitoring driver for Intersil ISL68137
+ *
+ * Copyright (c) 2017 Google Inc
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#include "pmbus.h"
+
+#define ISL68137_VOUT_AVS 0x30
+
+static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
+ int page,
+ char *buf)
+{
+ int val = pmbus_read_byte_data(client, page, PMBUS_OPERATION);
+
+ return sprintf(buf, "%d\n",
+ (val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS ? 1 : 0);
+}
+
+static ssize_t isl68137_avs_enable_store_page(struct i2c_client *client,
+ int page,
+ const char *buf, size_t count)
+{
+ int rc, op_val;
+ bool result;
+
+ rc = kstrtobool(buf, &result);
+ if (!rc)
+ return -EINVAL;
+
+ op_val = result ? ISL68137_VOUT_AVS : 0;
+
+ /*
+ * Writes to VOUT setpoint over AVSBus will persist after the VRM is
+ * switched to PMBus control. Switching back to AVSBus control
+ * restores this persisted setpoint rather than re-initializing to
+ * PMBus VOUT_COMMAND. Writing VOUT_COMMAND first over PMBus before
+ * enabling AVS control is the workaround.
+ */
+ if (op_val == ISL68137_VOUT_AVS) {
+ rc = pmbus_read_word_data(client, page, PMBUS_VOUT_COMMAND);
+ if (rc < 0)
+ return rc;
+
+ rc = pmbus_write_word_data(client, page, PMBUS_VOUT_COMMAND,
+ rc);
+ if (rc < 0)
+ return rc;
+ }
+
+ rc = pmbus_update_byte_data(client, page, PMBUS_OPERATION,
+ ISL68137_VOUT_AVS, op_val);
+
+ return (rc < 0) ? rc : count;
+}
+
+static ssize_t isl68137_avs_enable_show(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev->parent);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+ return isl68137_avs_enable_show_page(client, attr->index, buf);
+}
+
+static ssize_t isl68137_avs_enable_store(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev->parent);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+ return isl68137_avs_enable_store_page(client, attr->index, buf, count);
+}
+
+static SENSOR_DEVICE_ATTR_RW(avs0_enable, isl68137_avs_enable, 0);
+static SENSOR_DEVICE_ATTR_RW(avs1_enable, isl68137_avs_enable, 1);
+
+static struct attribute *enable_attrs[] = {
+ &sensor_dev_attr_avs0_enable.dev_attr.attr,
+ &sensor_dev_attr_avs1_enable.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group enable_group = {
+ .attrs = enable_attrs,
+};
+
+static const struct attribute_group *attribute_groups[] = {
+ &enable_group,
+ NULL,
+};
+
+static struct pmbus_driver_info isl68137_info = {
+ .pages = 2,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_CURRENT_IN] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
+ .format[PSC_POWER] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+ .m[PSC_VOLTAGE_IN] = 1,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = 3,
+ .m[PSC_VOLTAGE_OUT] = 1,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = 3,
+ .m[PSC_CURRENT_IN] = 1,
+ .b[PSC_CURRENT_IN] = 0,
+ .R[PSC_CURRENT_IN] = 2,
+ .m[PSC_CURRENT_OUT] = 1,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = 1,
+ .m[PSC_POWER] = 1,
+ .b[PSC_POWER] = 0,
+ .R[PSC_POWER] = 0,
+ .m[PSC_TEMPERATURE] = 1,
+ .b[PSC_TEMPERATURE] = 0,
+ .R[PSC_TEMPERATURE] = 0,
+ .func[0] = 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_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
+ .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
+ .groups = attribute_groups,
+};
+
+static int isl68137_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return pmbus_do_probe(client, id, &isl68137_info);
+}
+
+static const struct i2c_device_id isl68137_id[] = {
+ {"isl68137", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, isl68137_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver isl68137_driver = {
+ .driver = {
+ .name = "isl68137",
+ },
+ .probe = isl68137_probe,
+ .remove = pmbus_do_remove,
+ .id_table = isl68137_id,
+};
+
+module_i2c_driver(isl68137_driver);
+
+MODULE_AUTHOR("Maxim Sloyko <[email protected]>");
+MODULE_DESCRIPTION("PMBus driver for Intersil ISL68137");
+MODULE_LICENSE("GPL");
--
2.21.0.392.gf8f6787159e-goog
On Mon, Apr 15, 2019 at 02:44:14PM -0700, Patrick Venture wrote:
> From: Maxim Sloyko <[email protected]>
>
> Intersil ISL68137 is a digital output 7-phase configurable PWM
> controller with an AVSBus interface.
>
> Signed-off-by: Maxim Sloyko <[email protected]>
> Signed-off-by: Robert Lippert <[email protected]>
> Signed-off-by: Patrick Venture <[email protected]>
For some reason I can not apply this patch - git reports that it is corrupt.
Can you check what happened ? I can't figure it out.
Another comment below - makes me wonder - was that a test ?
Since we are getting close, I applied the other patch. No need to resend.
Thanks,
Guenter
> ---
> v5:
> Drop extra parens
> Drop extra parameter check
> v4:
> Use kstrtobool
> Cleanup parens
> Use rc instead of temporary int
> Delete unnecessary coment
> Add remove to driver structure
> v3:
> Added missing driver documentation
> Cleaned up goto statements.
> Add missing error check on pmbus_read_word_data
> Transitioned to use SENSOR_DEVICE_ATTR_RW
> Renamed enabled attribute to enable
> Set up an attribute_group for the enable attribute and added to pmbus_info
> Removed the boilerplate driver remove method
> v2:
> Fixed bad header ordering.
> v1:
> Original new patchset with fixes from Rob Lippert.
> ---
> Documentation/hwmon/isl68137 | 72 ++++++++++++++
> drivers/hwmon/pmbus/Kconfig | 9 ++
> drivers/hwmon/pmbus/Makefile | 1 +
> drivers/hwmon/pmbus/isl68137.c | 172 +++++++++++++++++++++++++++++++++
> 4 files changed, 254 insertions(+)
> create mode 100644 Documentation/hwmon/isl68137
> create mode 100644 drivers/hwmon/pmbus/isl68137.c
>
> diff --git a/Documentation/hwmon/isl68137 b/Documentation/hwmon/isl68137
> new file mode 100644
> index 0000000000000..92e5c5fc5b777
> --- /dev/null
> +++ b/Documentation/hwmon/isl68137
> @@ -0,0 +1,72 @@
> +Kernel driver isl68137
> +======================
> +
> +Supported chips:
> + * Intersil ISL68137
> + Prefix: 'isl68137'
> + Addresses scanned: -
> + Datasheet: Publicly available at the Intersil website
> + https://www.intersil.com/content/dam/Intersil/documents/isl6/isl68137.pdf
> +
> +Authors:
> + Maxim Sloyko <[email protected]>
> + Robert Lippert <[email protected]>
> + Patrick Venture <[email protected]>
> +
> +Description
> +-----------
> +
> +Intersil ISL68137 is a digital output 7-phase configurable PWM
> +controller with an AVSBus interface.
> +
> +Usage Notes
> +-----------
> +
> +This driver does not probe for PMBus devices. You will have to instantiate
> +devices explicitly.
> +
> +The ISL68137 AVS operation mode must be enabled/disabled at runtime.
> +
> +Beyond the normal sysfs pmbus attributes, the driver exposes a control attribute.
> +
> +Additional Sysfs attributes
> +---------------------------
> +
> +avs(0|1)_enable Controls the AVS state of each rail.
> +
> +curr1_label "iin"
> +curr1_input Measured input current
> +curr1_crit Critical maximum current
> +curr1_crit_alarm Current critical high alarm
> +
> +curr[2-3]_label "iout[1-2]"
> +curr[2-3]_input Measured output current
> +curr[2-3]_crit Critical maximum current
> +curr[2-3]_crit_alarm Current critical high alarm
> +
> +in1_label "vin"
> +in1_input Measured input voltage
> +in1_lcrit Critical minimum input voltage
> +in1_lcrit_alarm Input voltage critical low alarm
> +in1_crit Critical maximum input voltage
> +in1_crit_alarm Input voltage critical high alarm
> +
> +in[2-3]_label "vout[1-2]"
> +in[2-3]_input Measured output voltage
> +in[2-3]_lcrit Critical minimum output voltage
> +in[2-3]_lcrit_alarm Output voltage critical low alarm
> +in[2-3]_crit Critical maximum output voltage
> +in[2-3]_crit_alarm Output voltage critical high alarm
> +
> +power1_label "pin"
> +power1_input Measured input power
> +power1_alarm Input power high alarm
> +
> +power[2-3]_label "pout[1-2]"
> +power[2-3]_input Measured output power
> +
> +temp[1-3]_input Measured temperature
> +temp[1-3]_crit Critical high temperature
> +temp[1-3]_crit_alarm Chip temperature critical high alarm
> +temp[1-3]_max Maximum temperature
> +temp[1-3]_max_alarm Chip temperature high alarm
> diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
> index de87abab990e5..7edab7e30eaf9 100644
> --- a/drivers/hwmon/pmbus/Kconfig
> +++ b/drivers/hwmon/pmbus/Kconfig
> @@ -63,6 +63,15 @@ config SENSORS_IR38064
> This driver can also be built as a module. If so, the module will
> be called ir38064.
>
> +config SENSORS_ISL68137
> + tristate "Intersil ISL68137"
> + help
> + If you say yes here you get hardware monitoring support for Intersil
> + ISL68137.
> +
> + This driver can also be built as a module. If so, the module will
> + be called isl68137.
> +
> config SENSORS_LM25066
> tristate "National Semiconductor LM25066 and compatibles"
> help
> diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
> index 7d1fa6b3c8c93..2219b93003167 100644
> --- a/drivers/hwmon/pmbus/Makefile
> +++ b/drivers/hwmon/pmbus/Makefile
> @@ -9,6 +9,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
> obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
> obj-$(CONFIG_SENSORS_IR35221) += ir35221.o
> obj-$(CONFIG_SENSORS_IR38064) += ir38064.o
> +obj-$(CONFIG_SENSORS_ISL68137) += isl68137.o
> obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
> obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
> obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o
> diff --git a/drivers/hwmon/pmbus/isl68137.c b/drivers/hwmon/pmbus/isl68137.c
> new file mode 100644
> index 0000000000000..4140c52d6f124
> --- /dev/null
> +++ b/drivers/hwmon/pmbus/isl68137.c
> @@ -0,0 +1,172 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Hardware monitoring driver for Intersil ISL68137
> + *
> + * Copyright (c) 2017 Google Inc
> + *
> + */
> +
> +#include <linux/err.h>
> +#include <linux/hwmon-sysfs.h>
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/string.h>
> +#include <linux/sysfs.h>
> +#include "pmbus.h"
> +
> +#define ISL68137_VOUT_AVS 0x30
> +
> +static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
> + int page,
> + char *buf)
> +{
> + int val = pmbus_read_byte_data(client, page, PMBUS_OPERATION);
> +
> + return sprintf(buf, "%d\n",
> + (val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS ? 1 : 0);
> +}
> +
> +static ssize_t isl68137_avs_enable_store_page(struct i2c_client *client,
> + int page,
> + const char *buf, size_t count)
> +{
> + int rc, op_val;
> + bool result;
> +
> + rc = kstrtobool(buf, &result);
> + if (!rc)
> + return -EINVAL;
if (rc)
return rc;
> +
> + op_val = result ? ISL68137_VOUT_AVS : 0;
> +
> + /*
> + * Writes to VOUT setpoint over AVSBus will persist after the VRM is
> + * switched to PMBus control. Switching back to AVSBus control
> + * restores this persisted setpoint rather than re-initializing to
> + * PMBus VOUT_COMMAND. Writing VOUT_COMMAND first over PMBus before
> + * enabling AVS control is the workaround.
> + */
> + if (op_val == ISL68137_VOUT_AVS) {
> + rc = pmbus_read_word_data(client, page, PMBUS_VOUT_COMMAND);
> + if (rc < 0)
> + return rc;
> +
> + rc = pmbus_write_word_data(client, page, PMBUS_VOUT_COMMAND,
> + rc);
> + if (rc < 0)
> + return rc;
> + }
> +
> + rc = pmbus_update_byte_data(client, page, PMBUS_OPERATION,
> + ISL68137_VOUT_AVS, op_val);
> +
> + return (rc < 0) ? rc : count;
> +}
> +
> +static ssize_t isl68137_avs_enable_show(struct device *dev,
> + struct device_attribute *devattr,
> + char *buf)
> +{
> + struct i2c_client *client = to_i2c_client(dev->parent);
> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> +
> + return isl68137_avs_enable_show_page(client, attr->index, buf);
> +}
> +
> +static ssize_t isl68137_avs_enable_store(struct device *dev,
> + struct device_attribute *devattr,
> + const char *buf, size_t count)
> +{
> + struct i2c_client *client = to_i2c_client(dev->parent);
> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> +
> + return isl68137_avs_enable_store_page(client, attr->index, buf, count);
> +}
> +
> +static SENSOR_DEVICE_ATTR_RW(avs0_enable, isl68137_avs_enable, 0);
> +static SENSOR_DEVICE_ATTR_RW(avs1_enable, isl68137_avs_enable, 1);
> +
> +static struct attribute *enable_attrs[] = {
> + &sensor_dev_attr_avs0_enable.dev_attr.attr,
> + &sensor_dev_attr_avs1_enable.dev_attr.attr,
> + NULL,
> +};
> +
> +static const struct attribute_group enable_group = {
> + .attrs = enable_attrs,
> +};
> +
> +static const struct attribute_group *attribute_groups[] = {
> + &enable_group,
> + NULL,
> +};
> +
> +static struct pmbus_driver_info isl68137_info = {
> + .pages = 2,
> + .format[PSC_VOLTAGE_IN] = direct,
> + .format[PSC_VOLTAGE_OUT] = direct,
> + .format[PSC_CURRENT_IN] = direct,
> + .format[PSC_CURRENT_OUT] = direct,
> + .format[PSC_POWER] = direct,
> + .format[PSC_TEMPERATURE] = direct,
> + .m[PSC_VOLTAGE_IN] = 1,
> + .b[PSC_VOLTAGE_IN] = 0,
> + .R[PSC_VOLTAGE_IN] = 3,
> + .m[PSC_VOLTAGE_OUT] = 1,
> + .b[PSC_VOLTAGE_OUT] = 0,
> + .R[PSC_VOLTAGE_OUT] = 3,
> + .m[PSC_CURRENT_IN] = 1,
> + .b[PSC_CURRENT_IN] = 0,
> + .R[PSC_CURRENT_IN] = 2,
> + .m[PSC_CURRENT_OUT] = 1,
> + .b[PSC_CURRENT_OUT] = 0,
> + .R[PSC_CURRENT_OUT] = 1,
> + .m[PSC_POWER] = 1,
> + .b[PSC_POWER] = 0,
> + .R[PSC_POWER] = 0,
> + .m[PSC_TEMPERATURE] = 1,
> + .b[PSC_TEMPERATURE] = 0,
> + .R[PSC_TEMPERATURE] = 0,
> + .func[0] = 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_VOUT | PMBUS_HAVE_STATUS_VOUT
> + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
> + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
> + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
> + .groups = attribute_groups,
> +};
> +
> +static int isl68137_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + return pmbus_do_probe(client, id, &isl68137_info);
> +}
> +
> +static const struct i2c_device_id isl68137_id[] = {
> + {"isl68137", 0},
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, isl68137_id);
> +
> +/* This is the driver that will be inserted */
> +static struct i2c_driver isl68137_driver = {
> + .driver = {
> + .name = "isl68137",
> + },
> + .probe = isl68137_probe,
> + .remove = pmbus_do_remove,
> + .id_table = isl68137_id,
> +};
> +
> +module_i2c_driver(isl68137_driver);
> +
> +MODULE_AUTHOR("Maxim Sloyko <[email protected]>");
> +MODULE_DESCRIPTION("PMBus driver for Intersil ISL68137");
> +MODULE_LICENSE("GPL");
> --
> 2.21.0.392.gf8f6787159e-goog
>
On Mon, Apr 15, 2019 at 2:58 PM Guenter Roeck <[email protected]> wrote:
>
> On Mon, Apr 15, 2019 at 02:44:14PM -0700, Patrick Venture wrote:
> > From: Maxim Sloyko <[email protected]>
> >
> > Intersil ISL68137 is a digital output 7-phase configurable PWM
> > controller with an AVSBus interface.
> >
> > Signed-off-by: Maxim Sloyko <[email protected]>
> > Signed-off-by: Robert Lippert <[email protected]>
> > Signed-off-by: Patrick Venture <[email protected]>
>
> For some reason I can not apply this patch - git reports that it is corrupt.
> Can you check what happened ? I can't figure it out.
Weird, I'll update the repo and try again once the other patch goes
publicly applied (versus email list).
>
> Another comment below - makes me wonder - was that a test ?
>
> Since we are getting close, I applied the other patch. No need to resend.
>
> Thanks,
> Guenter
>
> > ---
> > v5:
> > Drop extra parens
> > Drop extra parameter check
> > v4:
> > Use kstrtobool
> > Cleanup parens
> > Use rc instead of temporary int
> > Delete unnecessary coment
> > Add remove to driver structure
> > v3:
> > Added missing driver documentation
> > Cleaned up goto statements.
> > Add missing error check on pmbus_read_word_data
> > Transitioned to use SENSOR_DEVICE_ATTR_RW
> > Renamed enabled attribute to enable
> > Set up an attribute_group for the enable attribute and added to pmbus_info
> > Removed the boilerplate driver remove method
> > v2:
> > Fixed bad header ordering.
> > v1:
> > Original new patchset with fixes from Rob Lippert.
> > ---
> > Documentation/hwmon/isl68137 | 72 ++++++++++++++
> > drivers/hwmon/pmbus/Kconfig | 9 ++
> > drivers/hwmon/pmbus/Makefile | 1 +
> > drivers/hwmon/pmbus/isl68137.c | 172 +++++++++++++++++++++++++++++++++
> > 4 files changed, 254 insertions(+)
> > create mode 100644 Documentation/hwmon/isl68137
> > create mode 100644 drivers/hwmon/pmbus/isl68137.c
> >
> > diff --git a/Documentation/hwmon/isl68137 b/Documentation/hwmon/isl68137
> > new file mode 100644
> > index 0000000000000..92e5c5fc5b777
> > --- /dev/null
> > +++ b/Documentation/hwmon/isl68137
> > @@ -0,0 +1,72 @@
> > +Kernel driver isl68137
> > +======================
> > +
> > +Supported chips:
> > + * Intersil ISL68137
> > + Prefix: 'isl68137'
> > + Addresses scanned: -
> > + Datasheet: Publicly available at the Intersil website
> > + https://www.intersil.com/content/dam/Intersil/documents/isl6/isl68137.pdf
> > +
> > +Authors:
> > + Maxim Sloyko <[email protected]>
> > + Robert Lippert <[email protected]>
> > + Patrick Venture <[email protected]>
> > +
> > +Description
> > +-----------
> > +
> > +Intersil ISL68137 is a digital output 7-phase configurable PWM
> > +controller with an AVSBus interface.
> > +
> > +Usage Notes
> > +-----------
> > +
> > +This driver does not probe for PMBus devices. You will have to instantiate
> > +devices explicitly.
> > +
> > +The ISL68137 AVS operation mode must be enabled/disabled at runtime.
> > +
> > +Beyond the normal sysfs pmbus attributes, the driver exposes a control attribute.
> > +
> > +Additional Sysfs attributes
> > +---------------------------
> > +
> > +avs(0|1)_enable Controls the AVS state of each rail.
> > +
> > +curr1_label "iin"
> > +curr1_input Measured input current
> > +curr1_crit Critical maximum current
> > +curr1_crit_alarm Current critical high alarm
> > +
> > +curr[2-3]_label "iout[1-2]"
> > +curr[2-3]_input Measured output current
> > +curr[2-3]_crit Critical maximum current
> > +curr[2-3]_crit_alarm Current critical high alarm
> > +
> > +in1_label "vin"
> > +in1_input Measured input voltage
> > +in1_lcrit Critical minimum input voltage
> > +in1_lcrit_alarm Input voltage critical low alarm
> > +in1_crit Critical maximum input voltage
> > +in1_crit_alarm Input voltage critical high alarm
> > +
> > +in[2-3]_label "vout[1-2]"
> > +in[2-3]_input Measured output voltage
> > +in[2-3]_lcrit Critical minimum output voltage
> > +in[2-3]_lcrit_alarm Output voltage critical low alarm
> > +in[2-3]_crit Critical maximum output voltage
> > +in[2-3]_crit_alarm Output voltage critical high alarm
> > +
> > +power1_label "pin"
> > +power1_input Measured input power
> > +power1_alarm Input power high alarm
> > +
> > +power[2-3]_label "pout[1-2]"
> > +power[2-3]_input Measured output power
> > +
> > +temp[1-3]_input Measured temperature
> > +temp[1-3]_crit Critical high temperature
> > +temp[1-3]_crit_alarm Chip temperature critical high alarm
> > +temp[1-3]_max Maximum temperature
> > +temp[1-3]_max_alarm Chip temperature high alarm
> > diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
> > index de87abab990e5..7edab7e30eaf9 100644
> > --- a/drivers/hwmon/pmbus/Kconfig
> > +++ b/drivers/hwmon/pmbus/Kconfig
> > @@ -63,6 +63,15 @@ config SENSORS_IR38064
> > This driver can also be built as a module. If so, the module will
> > be called ir38064.
> >
> > +config SENSORS_ISL68137
> > + tristate "Intersil ISL68137"
> > + help
> > + If you say yes here you get hardware monitoring support for Intersil
> > + ISL68137.
> > +
> > + This driver can also be built as a module. If so, the module will
> > + be called isl68137.
> > +
> > config SENSORS_LM25066
> > tristate "National Semiconductor LM25066 and compatibles"
> > help
> > diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
> > index 7d1fa6b3c8c93..2219b93003167 100644
> > --- a/drivers/hwmon/pmbus/Makefile
> > +++ b/drivers/hwmon/pmbus/Makefile
> > @@ -9,6 +9,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
> > obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
> > obj-$(CONFIG_SENSORS_IR35221) += ir35221.o
> > obj-$(CONFIG_SENSORS_IR38064) += ir38064.o
> > +obj-$(CONFIG_SENSORS_ISL68137) += isl68137.o
> > obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
> > obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
> > obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o
> > diff --git a/drivers/hwmon/pmbus/isl68137.c b/drivers/hwmon/pmbus/isl68137.c
> > new file mode 100644
> > index 0000000000000..4140c52d6f124
> > --- /dev/null
> > +++ b/drivers/hwmon/pmbus/isl68137.c
> > @@ -0,0 +1,172 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Hardware monitoring driver for Intersil ISL68137
> > + *
> > + * Copyright (c) 2017 Google Inc
> > + *
> > + */
> > +
> > +#include <linux/err.h>
> > +#include <linux/hwmon-sysfs.h>
> > +#include <linux/i2c.h>
> > +#include <linux/init.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/string.h>
> > +#include <linux/sysfs.h>
> > +#include "pmbus.h"
> > +
> > +#define ISL68137_VOUT_AVS 0x30
> > +
> > +static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
> > + int page,
> > + char *buf)
> > +{
> > + int val = pmbus_read_byte_data(client, page, PMBUS_OPERATION);
> > +
> > + return sprintf(buf, "%d\n",
> > + (val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS ? 1 : 0);
> > +}
> > +
> > +static ssize_t isl68137_avs_enable_store_page(struct i2c_client *client,
> > + int page,
> > + const char *buf, size_t count)
> > +{
> > + int rc, op_val;
> > + bool result;
> > +
> > + rc = kstrtobool(buf, &result);
> > + if (!rc)
> > + return -EINVAL;
>
> if (rc)
> return rc;
That was a normal patchset fatigue mistake, not a test. The pattern
of "if (rc) return rc" is common enough, is there a macro I should be
using?
>
> > +
> > + op_val = result ? ISL68137_VOUT_AVS : 0;
> > +
> > + /*
> > + * Writes to VOUT setpoint over AVSBus will persist after the VRM is
> > + * switched to PMBus control. Switching back to AVSBus control
> > + * restores this persisted setpoint rather than re-initializing to
> > + * PMBus VOUT_COMMAND. Writing VOUT_COMMAND first over PMBus before
> > + * enabling AVS control is the workaround.
> > + */
> > + if (op_val == ISL68137_VOUT_AVS) {
> > + rc = pmbus_read_word_data(client, page, PMBUS_VOUT_COMMAND);
> > + if (rc < 0)
> > + return rc;
> > +
> > + rc = pmbus_write_word_data(client, page, PMBUS_VOUT_COMMAND,
> > + rc);
> > + if (rc < 0)
> > + return rc;
> > + }
> > +
> > + rc = pmbus_update_byte_data(client, page, PMBUS_OPERATION,
> > + ISL68137_VOUT_AVS, op_val);
> > +
> > + return (rc < 0) ? rc : count;
> > +}
> > +
> > +static ssize_t isl68137_avs_enable_show(struct device *dev,
> > + struct device_attribute *devattr,
> > + char *buf)
> > +{
> > + struct i2c_client *client = to_i2c_client(dev->parent);
> > + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> > +
> > + return isl68137_avs_enable_show_page(client, attr->index, buf);
> > +}
> > +
> > +static ssize_t isl68137_avs_enable_store(struct device *dev,
> > + struct device_attribute *devattr,
> > + const char *buf, size_t count)
> > +{
> > + struct i2c_client *client = to_i2c_client(dev->parent);
> > + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> > +
> > + return isl68137_avs_enable_store_page(client, attr->index, buf, count);
> > +}
> > +
> > +static SENSOR_DEVICE_ATTR_RW(avs0_enable, isl68137_avs_enable, 0);
> > +static SENSOR_DEVICE_ATTR_RW(avs1_enable, isl68137_avs_enable, 1);
> > +
> > +static struct attribute *enable_attrs[] = {
> > + &sensor_dev_attr_avs0_enable.dev_attr.attr,
> > + &sensor_dev_attr_avs1_enable.dev_attr.attr,
> > + NULL,
> > +};
> > +
> > +static const struct attribute_group enable_group = {
> > + .attrs = enable_attrs,
> > +};
> > +
> > +static const struct attribute_group *attribute_groups[] = {
> > + &enable_group,
> > + NULL,
> > +};
> > +
> > +static struct pmbus_driver_info isl68137_info = {
> > + .pages = 2,
> > + .format[PSC_VOLTAGE_IN] = direct,
> > + .format[PSC_VOLTAGE_OUT] = direct,
> > + .format[PSC_CURRENT_IN] = direct,
> > + .format[PSC_CURRENT_OUT] = direct,
> > + .format[PSC_POWER] = direct,
> > + .format[PSC_TEMPERATURE] = direct,
> > + .m[PSC_VOLTAGE_IN] = 1,
> > + .b[PSC_VOLTAGE_IN] = 0,
> > + .R[PSC_VOLTAGE_IN] = 3,
> > + .m[PSC_VOLTAGE_OUT] = 1,
> > + .b[PSC_VOLTAGE_OUT] = 0,
> > + .R[PSC_VOLTAGE_OUT] = 3,
> > + .m[PSC_CURRENT_IN] = 1,
> > + .b[PSC_CURRENT_IN] = 0,
> > + .R[PSC_CURRENT_IN] = 2,
> > + .m[PSC_CURRENT_OUT] = 1,
> > + .b[PSC_CURRENT_OUT] = 0,
> > + .R[PSC_CURRENT_OUT] = 1,
> > + .m[PSC_POWER] = 1,
> > + .b[PSC_POWER] = 0,
> > + .R[PSC_POWER] = 0,
> > + .m[PSC_TEMPERATURE] = 1,
> > + .b[PSC_TEMPERATURE] = 0,
> > + .R[PSC_TEMPERATURE] = 0,
> > + .func[0] = 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_VOUT | PMBUS_HAVE_STATUS_VOUT
> > + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
> > + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
> > + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
> > + .groups = attribute_groups,
> > +};
> > +
> > +static int isl68137_probe(struct i2c_client *client,
> > + const struct i2c_device_id *id)
> > +{
> > + return pmbus_do_probe(client, id, &isl68137_info);
> > +}
> > +
> > +static const struct i2c_device_id isl68137_id[] = {
> > + {"isl68137", 0},
> > + {}
> > +};
> > +
> > +MODULE_DEVICE_TABLE(i2c, isl68137_id);
> > +
> > +/* This is the driver that will be inserted */
> > +static struct i2c_driver isl68137_driver = {
> > + .driver = {
> > + .name = "isl68137",
> > + },
> > + .probe = isl68137_probe,
> > + .remove = pmbus_do_remove,
> > + .id_table = isl68137_id,
> > +};
> > +
> > +module_i2c_driver(isl68137_driver);
> > +
> > +MODULE_AUTHOR("Maxim Sloyko <[email protected]>");
> > +MODULE_DESCRIPTION("PMBus driver for Intersil ISL68137");
> > +MODULE_LICENSE("GPL");
> > --
> > 2.21.0.392.gf8f6787159e-goog
> >