* [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct
@ 2022-12-01 19:29 Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 2/5] hwmon: (pmbus/core): Add interrupt support Naresh Solanki
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:29 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
Add regulator device in pmbus_data & initialize the same during PMBus
regulator register.
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 95e95783972a..7a23794c0b93 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -81,6 +81,7 @@ struct pmbus_label {
struct pmbus_data {
struct device *dev;
struct device *hwmon_dev;
+ struct regulator_dev **rdevs;
u32 flags; /* from platform data */
@@ -3053,6 +3054,11 @@ static int pmbus_regulator_register(struct pmbus_data *data)
struct regulator_dev *rdev;
int i;
+ data->rdevs = devm_kzalloc(dev, sizeof(struct regulator_dev *) * info->num_regulators,
+ GFP_KERNEL);
+ if (!data->rdevs)
+ return -ENOMEM;
+
for (i = 0; i < info->num_regulators; i++) {
struct regulator_config config = { };
@@ -3062,7 +3068,7 @@ static int pmbus_regulator_register(struct pmbus_data *data)
if (pdata && pdata->reg_init_data)
config.init_data = &pdata->reg_init_data[i];
- rdev = devm_regulator_register(dev, &info->reg_desc[i],
+ data->rdevs[i] = devm_regulator_register(dev, &info->reg_desc[i],
&config);
if (IS_ERR(rdev))
return dev_err_probe(dev, PTR_ERR(rdev),
base-commit: 9494c53e1389b120ba461899207ac8a3aab2632c
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 2/5] hwmon: (pmbus/core): Add interrupt support
2022-12-01 19:29 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
@ 2022-12-01 19:29 ` Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 3/5] hwmon: (pmbus/core): Notify hwmon events Naresh Solanki
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:29 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
From: Patrick Rudolph <patrick.rudolph@9elements.com>
Implement PMBUS irq handler.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus.h | 2 +-
drivers/hwmon/pmbus/pmbus_core.c | 89 ++++++++++++++++++++++++++++++++
2 files changed, 90 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
index 10fb17879f8e..6b2e6cf93b19 100644
--- a/drivers/hwmon/pmbus/pmbus.h
+++ b/drivers/hwmon/pmbus/pmbus.h
@@ -26,7 +26,7 @@ enum pmbus_regs {
PMBUS_CAPABILITY = 0x19,
PMBUS_QUERY = 0x1A,
-
+ PMBUS_SMBALERT_MASK = 0x1B,
PMBUS_VOUT_MODE = 0x20,
PMBUS_VOUT_COMMAND = 0x21,
PMBUS_VOUT_TRIM = 0x22,
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 7a23794c0b93..bdcbc216b0cc 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -3078,11 +3078,94 @@ static int pmbus_regulator_register(struct pmbus_data *data)
return 0;
}
+
+static int pmbus_write_smbalert_mask(struct i2c_client *client, u8 page, u8 reg, u8 val)
+{
+ return pmbus_write_word_data(client, page, PMBUS_SMBALERT_MASK, reg | (val << 8));
+}
+
+static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
+{
+ struct pmbus_data *data = pdata;
+ struct i2c_client *client = to_i2c_client(data->dev);
+ int i, status;
+ u8 page;
+
+ for (i = 0; i < data->info->num_regulators; i++) {
+
+ if (!data->rdevs[i])
+ continue;
+
+ page = rdev_get_id(data->rdevs[i]);
+ mutex_lock(&data->update_lock);
+ status = pmbus_read_status_word(client, page);
+ if (status < 0) {
+ mutex_unlock(&data->update_lock);
+ return status;
+ }
+
+ if (status & ~(PB_STATUS_OFF | PB_STATUS_BUSY | PB_STATUS_POWER_GOOD_N))
+ pmbus_clear_fault_page(client, page);
+
+ mutex_unlock(&data->update_lock);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int pmbus_irq_setup(struct i2c_client *client, struct pmbus_data *data)
+{
+ struct device *dev = &client->dev;
+ const struct pmbus_regulator_status_category *cat;
+ const struct pmbus_regulator_status_assoc *bit;
+ int i, j, err, ret, func;
+ u8 mask;
+
+ for (i = 0; i < data->info->pages; i++) {
+ func = data->info->func[i];
+
+ for (j = 0; j < ARRAY_SIZE(pmbus_regulator_flag_map); j++) {
+ cat = &pmbus_regulator_flag_map[j];
+ if (!(func & cat->func))
+ continue;
+ mask = 0;
+ for (bit = cat->bits; bit->pflag; bit++)
+ mask |= bit->pflag;
+
+ err = pmbus_write_smbalert_mask(client, i, cat->reg, ~mask);
+ if (err)
+ dev_err(dev, "Failed to set smbalert for reg 0x%02x\n", cat->reg);
+ }
+
+ pmbus_write_smbalert_mask(client, i, PMBUS_STATUS_CML, 0xff);
+ pmbus_write_smbalert_mask(client, i, PMBUS_STATUS_OTHER, 0xff);
+ pmbus_write_smbalert_mask(client, i, PMBUS_STATUS_MFR_SPECIFIC, 0xff);
+ if (data->info->func[i] & PMBUS_HAVE_FAN12)
+ pmbus_write_smbalert_mask(client, i, PMBUS_STATUS_FAN_12, 0xff);
+ if (data->info->func[i] & PMBUS_HAVE_FAN34)
+ pmbus_write_smbalert_mask(client, i, PMBUS_STATUS_FAN_34, 0xff);
+ }
+
+ /* Register notifiers - can fail if IRQ is not given */
+ ret = devm_request_threaded_irq(dev, client->irq, NULL, pmbus_fault_handler,
+ 0, "pmbus-irq", data);
+ if (ret) {
+ dev_warn(dev, "IRQ disabled %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
#else
static int pmbus_regulator_register(struct pmbus_data *data)
{
return 0;
}
+static int pmbus_irq_setup(struct i2c_client *client, struct pmbus_data *data)
+{
+ return 0;
+}
#endif
static struct dentry *pmbus_debugfs_dir; /* pmbus debugfs directory */
@@ -3447,6 +3530,12 @@ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info)
if (ret)
return ret;
+ if (client->irq > 0) {
+ ret = pmbus_irq_setup(client, data);
+ if (ret)
+ return ret;
+ }
+
ret = pmbus_init_debugfs(client, data);
if (ret)
dev_warn(dev, "Failed to register debugfs\n");
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 3/5] hwmon: (pmbus/core): Notify hwmon events
2022-12-01 19:29 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 2/5] hwmon: (pmbus/core): Add interrupt support Naresh Solanki
@ 2022-12-01 19:29 ` Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 5/5] hwmon: (pmbus/core): Notify regulator events Naresh Solanki
3 siblings, 0 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:29 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
Notify hwmon events using the pmbus irq handler.
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 46 +++++++++++++++++++++++++++++---
1 file changed, 43 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index bdcbc216b0cc..78c401412c4d 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2782,7 +2782,35 @@ static const struct pmbus_regulator_status_category pmbus_regulator_flag_map[] =
},
};
-static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
+#define to_dev_attr(_dev_attr) \
+ container_of(_dev_attr, struct device_attribute, attr)
+
+static void pmbus_notify(struct pmbus_data *data, int page, int reg, int flags)
+{
+ int i;
+
+ for (i = 0; i < data->num_attributes; i++) {
+ struct device_attribute *da = to_dev_attr(data->group.attrs[i]);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int index = attr->index;
+ u16 smask = pb_index_to_mask(index);
+ u8 spage = pb_index_to_page(index);
+ u16 sreg = pb_index_to_reg(index);
+
+ if (reg == sreg && page == spage && (smask & flags)) {
+ dev_dbg(data->dev, "sysfs notify: %s", da->attr.name);
+ sysfs_notify(&data->dev->kobj, NULL, da->attr.name);
+ kobject_uevent(&data->dev->kobj, KOBJ_CHANGE);
+ flags &= ~smask;
+ }
+
+ if (!flags)
+ break;
+ }
+}
+
+static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *error,
+ bool notify)
{
int i, status;
const struct pmbus_regulator_status_category *cat;
@@ -2812,6 +2840,9 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
if (status & bit->pflag)
*flags |= bit->rflag;
}
+
+ if (notify && status)
+ pmbus_notify(data, page, cat->reg, status);
}
/*
@@ -2856,6 +2887,11 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
return 0;
}
+static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
+{
+ return pmbus_regulator_get_flags(rdev, flags, false);
+}
+
static int pmbus_regulator_get_status(struct regulator_dev *rdev)
{
struct device *dev = rdev_get_dev(rdev);
@@ -3088,7 +3124,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
{
struct pmbus_data *data = pdata;
struct i2c_client *client = to_i2c_client(data->dev);
- int i, status;
+ int i, ret = IRQ_NONE, status;
u8 page;
for (i = 0; i < data->info->num_regulators; i++) {
@@ -3096,6 +3132,10 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
if (!data->rdevs[i])
continue;
+ ret = pmbus_regulator_get_flags(data->rdevs[i], &status, true);
+ if (ret)
+ return ret;
+
page = rdev_get_id(data->rdevs[i]);
mutex_lock(&data->update_lock);
status = pmbus_read_status_word(client, page);
@@ -3110,7 +3150,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
mutex_unlock(&data->update_lock);
}
- return IRQ_HANDLED;
+ return ret;
}
static int pmbus_irq_setup(struct i2c_client *client, struct pmbus_data *data)
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support
2022-12-01 19:29 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 2/5] hwmon: (pmbus/core): Add interrupt support Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 3/5] hwmon: (pmbus/core): Notify hwmon events Naresh Solanki
@ 2022-12-01 19:29 ` Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 5/5] hwmon: (pmbus/core): Notify regulator events Naresh Solanki
3 siblings, 0 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:29 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
From: Patrick Rudolph <patrick.rudolph@9elements.com>
Add regulator events corresponding to regulator error in regulator flag
map.
Also capture the same in pmbus_regulator_get_flags.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 85 ++++++++++++++++++++------------
1 file changed, 54 insertions(+), 31 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 78c401412c4d..daf700210c68 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2739,9 +2739,9 @@ static int pmbus_regulator_disable(struct regulator_dev *rdev)
return _pmbus_regulator_on_off(rdev, 0);
}
-/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */
+/* A PMBus status flag and the corresponding REGULATOR_ERROR_* and REGULATOR_EVENTS_* flag */
struct pmbus_regulator_status_assoc {
- int pflag, rflag;
+ int pflag, rflag, eflag;
};
/* PMBus->regulator bit mappings for a PMBus status register */
@@ -2756,27 +2756,36 @@ static const struct pmbus_regulator_status_category pmbus_regulator_flag_map[] =
.func = PMBUS_HAVE_STATUS_VOUT,
.reg = PMBUS_STATUS_VOUT,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN },
- { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE },
- { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN },
- { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT },
+ { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN,
+ REGULATOR_EVENT_UNDER_VOLTAGE_WARN },
+ { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE,
+ REGULATOR_EVENT_UNDER_VOLTAGE },
+ { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN,
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT,
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
{ },
},
}, {
.func = PMBUS_HAVE_STATUS_IOUT,
.reg = PMBUS_STATUS_IOUT,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN },
- { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT },
- { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT },
+ { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN,
+ REGULATOR_EVENT_OVER_CURRENT_WARN },
+ { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT,
+ REGULATOR_EVENT_OVER_CURRENT },
+ { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT,
+ REGULATOR_EVENT_OVER_CURRENT },
{ },
},
}, {
.func = PMBUS_HAVE_STATUS_TEMP,
.reg = PMBUS_STATUS_TEMPERATURE,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN },
- { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP },
+ { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN,
+ REGULATOR_EVENT_OVER_TEMP_WARN },
+ { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP,
+ REGULATOR_EVENT_OVER_TEMP },
{ },
},
},
@@ -2810,7 +2819,7 @@ static void pmbus_notify(struct pmbus_data *data, int page, int reg, int flags)
}
static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *error,
- bool notify)
+ unsigned int *event, bool notify)
{
int i, status;
const struct pmbus_regulator_status_category *cat;
@@ -2821,7 +2830,8 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
u8 page = rdev_get_id(rdev);
int func = data->info->func[page];
- *flags = 0;
+ *error = 0;
+ *event = 0;
mutex_lock(&data->update_lock);
@@ -2836,10 +2846,11 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
return status;
}
- for (bit = cat->bits; bit->pflag; bit++) {
- if (status & bit->pflag)
- *flags |= bit->rflag;
- }
+ for (bit = cat->bits; bit->pflag; bit++)
+ if (status & bit->pflag) {
+ *error |= bit->rflag;
+ *event |= bit->eflag;
+ }
if (notify && status)
pmbus_notify(data, page, cat->reg, status);
@@ -2860,36 +2871,48 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
return status;
if (pmbus_regulator_is_enabled(rdev)) {
- if (status & PB_STATUS_OFF)
- *flags |= REGULATOR_ERROR_FAIL;
+ if (status & PB_STATUS_OFF) {
+ *error |= REGULATOR_ERROR_FAIL;
+ *event |= REGULATOR_EVENT_FAIL;
+ }
- if (status & PB_STATUS_POWER_GOOD_N)
- *flags |= REGULATOR_ERROR_REGULATION_OUT;
+ if (status & PB_STATUS_POWER_GOOD_N) {
+ *error |= REGULATOR_ERROR_REGULATION_OUT;
+ *event |= REGULATOR_EVENT_REGULATION_OUT;
+ }
}
/*
* Unlike most other status bits, PB_STATUS_{IOUT_OC,VOUT_OV} are
* defined strictly as fault indicators (not warnings).
*/
- if (status & PB_STATUS_IOUT_OC)
- *flags |= REGULATOR_ERROR_OVER_CURRENT;
- if (status & PB_STATUS_VOUT_OV)
- *flags |= REGULATOR_ERROR_REGULATION_OUT;
+ if (status & PB_STATUS_IOUT_OC) {
+ *error |= REGULATOR_ERROR_OVER_CURRENT;
+ *event |= REGULATOR_EVENT_OVER_CURRENT;
+ }
+ if (status & PB_STATUS_VOUT_OV) {
+ *error |= REGULATOR_ERROR_REGULATION_OUT;
+ *event |= REGULATOR_EVENT_FAIL;
+ }
/*
* If we haven't discovered any thermal faults or warnings via
* PMBUS_STATUS_TEMPERATURE, map PB_STATUS_TEMPERATURE to a warning as
* a (conservative) best-effort interpretation.
*/
- if (!(*flags & (REGULATOR_ERROR_OVER_TEMP | REGULATOR_ERROR_OVER_TEMP_WARN)) &&
- (status & PB_STATUS_TEMPERATURE))
- *flags |= REGULATOR_ERROR_OVER_TEMP_WARN;
+ if (!(*error & (REGULATOR_ERROR_OVER_TEMP | REGULATOR_ERROR_OVER_TEMP_WARN)) &&
+ (status & PB_STATUS_TEMPERATURE)) {
+ *error |= REGULATOR_ERROR_OVER_TEMP_WARN;
+ *event |= REGULATOR_EVENT_OVER_TEMP_WARN;
+ }
return 0;
}
static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
{
- return pmbus_regulator_get_flags(rdev, flags, false);
+ int event;
+
+ return pmbus_regulator_get_flags(rdev, flags, &event, false);
}
static int pmbus_regulator_get_status(struct regulator_dev *rdev)
@@ -3124,7 +3147,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
{
struct pmbus_data *data = pdata;
struct i2c_client *client = to_i2c_client(data->dev);
- int i, ret = IRQ_NONE, status;
+ int i, ret = IRQ_NONE, status, event;
u8 page;
for (i = 0; i < data->info->num_regulators; i++) {
@@ -3132,7 +3155,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
if (!data->rdevs[i])
continue;
- ret = pmbus_regulator_get_flags(data->rdevs[i], &status, true);
+ ret = pmbus_regulator_get_flags(data->rdevs[i], &status, &event, true);
if (ret)
return ret;
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 5/5] hwmon: (pmbus/core): Notify regulator events
2022-12-01 19:29 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
` (2 preceding siblings ...)
2022-12-01 19:29 ` [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support Naresh Solanki
@ 2022-12-01 19:29 ` Naresh Solanki
3 siblings, 0 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:29 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
Notify regulator events in PMBus irq handler.
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index daf700210c68..dbdf8c8187db 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -3159,6 +3159,11 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
if (ret)
return ret;
+ if (event) {
+ regulator_notifier_call_chain(data->rdevs[i], event, NULL);
+ ret = IRQ_HANDLED;
+ }
+
page = rdev_get_id(data->rdevs[i]);
mutex_lock(&data->update_lock);
status = pmbus_read_status_word(client, page);
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support
2022-12-01 19:03 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
@ 2022-12-01 19:03 ` Naresh Solanki
0 siblings, 0 replies; 6+ messages in thread
From: Naresh Solanki @ 2022-12-01 19:03 UTC (permalink / raw)
To: devicetree, Guenter Roeck, Jean Delvare, Liam Girdwood, Mark Brown
Cc: linux-kernel, linux-hwmon, Patrick Rudolph, Naresh Solanki
From: Patrick Rudolph <patrick.rudolph@9elements.com>
Add regulator events corresponding to regulator error in regulator flag
map.
Also capture the same in pmbus_regulator_get_flags.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 85 ++++++++++++++++++++------------
1 file changed, 54 insertions(+), 31 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 78c401412c4d..daf700210c68 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2739,9 +2739,9 @@ static int pmbus_regulator_disable(struct regulator_dev *rdev)
return _pmbus_regulator_on_off(rdev, 0);
}
-/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */
+/* A PMBus status flag and the corresponding REGULATOR_ERROR_* and REGULATOR_EVENTS_* flag */
struct pmbus_regulator_status_assoc {
- int pflag, rflag;
+ int pflag, rflag, eflag;
};
/* PMBus->regulator bit mappings for a PMBus status register */
@@ -2756,27 +2756,36 @@ static const struct pmbus_regulator_status_category pmbus_regulator_flag_map[] =
.func = PMBUS_HAVE_STATUS_VOUT,
.reg = PMBUS_STATUS_VOUT,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN },
- { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE },
- { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN },
- { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT },
+ { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN,
+ REGULATOR_EVENT_UNDER_VOLTAGE_WARN },
+ { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE,
+ REGULATOR_EVENT_UNDER_VOLTAGE },
+ { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN,
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT,
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
{ },
},
}, {
.func = PMBUS_HAVE_STATUS_IOUT,
.reg = PMBUS_STATUS_IOUT,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN },
- { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT },
- { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT },
+ { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN,
+ REGULATOR_EVENT_OVER_CURRENT_WARN },
+ { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT,
+ REGULATOR_EVENT_OVER_CURRENT },
+ { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT,
+ REGULATOR_EVENT_OVER_CURRENT },
{ },
},
}, {
.func = PMBUS_HAVE_STATUS_TEMP,
.reg = PMBUS_STATUS_TEMPERATURE,
.bits = (const struct pmbus_regulator_status_assoc[]) {
- { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN },
- { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP },
+ { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN,
+ REGULATOR_EVENT_OVER_TEMP_WARN },
+ { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP,
+ REGULATOR_EVENT_OVER_TEMP },
{ },
},
},
@@ -2810,7 +2819,7 @@ static void pmbus_notify(struct pmbus_data *data, int page, int reg, int flags)
}
static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *error,
- bool notify)
+ unsigned int *event, bool notify)
{
int i, status;
const struct pmbus_regulator_status_category *cat;
@@ -2821,7 +2830,8 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
u8 page = rdev_get_id(rdev);
int func = data->info->func[page];
- *flags = 0;
+ *error = 0;
+ *event = 0;
mutex_lock(&data->update_lock);
@@ -2836,10 +2846,11 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
return status;
}
- for (bit = cat->bits; bit->pflag; bit++) {
- if (status & bit->pflag)
- *flags |= bit->rflag;
- }
+ for (bit = cat->bits; bit->pflag; bit++)
+ if (status & bit->pflag) {
+ *error |= bit->rflag;
+ *event |= bit->eflag;
+ }
if (notify && status)
pmbus_notify(data, page, cat->reg, status);
@@ -2860,36 +2871,48 @@ static int pmbus_regulator_get_flags(struct regulator_dev *rdev, unsigned int *e
return status;
if (pmbus_regulator_is_enabled(rdev)) {
- if (status & PB_STATUS_OFF)
- *flags |= REGULATOR_ERROR_FAIL;
+ if (status & PB_STATUS_OFF) {
+ *error |= REGULATOR_ERROR_FAIL;
+ *event |= REGULATOR_EVENT_FAIL;
+ }
- if (status & PB_STATUS_POWER_GOOD_N)
- *flags |= REGULATOR_ERROR_REGULATION_OUT;
+ if (status & PB_STATUS_POWER_GOOD_N) {
+ *error |= REGULATOR_ERROR_REGULATION_OUT;
+ *event |= REGULATOR_EVENT_REGULATION_OUT;
+ }
}
/*
* Unlike most other status bits, PB_STATUS_{IOUT_OC,VOUT_OV} are
* defined strictly as fault indicators (not warnings).
*/
- if (status & PB_STATUS_IOUT_OC)
- *flags |= REGULATOR_ERROR_OVER_CURRENT;
- if (status & PB_STATUS_VOUT_OV)
- *flags |= REGULATOR_ERROR_REGULATION_OUT;
+ if (status & PB_STATUS_IOUT_OC) {
+ *error |= REGULATOR_ERROR_OVER_CURRENT;
+ *event |= REGULATOR_EVENT_OVER_CURRENT;
+ }
+ if (status & PB_STATUS_VOUT_OV) {
+ *error |= REGULATOR_ERROR_REGULATION_OUT;
+ *event |= REGULATOR_EVENT_FAIL;
+ }
/*
* If we haven't discovered any thermal faults or warnings via
* PMBUS_STATUS_TEMPERATURE, map PB_STATUS_TEMPERATURE to a warning as
* a (conservative) best-effort interpretation.
*/
- if (!(*flags & (REGULATOR_ERROR_OVER_TEMP | REGULATOR_ERROR_OVER_TEMP_WARN)) &&
- (status & PB_STATUS_TEMPERATURE))
- *flags |= REGULATOR_ERROR_OVER_TEMP_WARN;
+ if (!(*error & (REGULATOR_ERROR_OVER_TEMP | REGULATOR_ERROR_OVER_TEMP_WARN)) &&
+ (status & PB_STATUS_TEMPERATURE)) {
+ *error |= REGULATOR_ERROR_OVER_TEMP_WARN;
+ *event |= REGULATOR_EVENT_OVER_TEMP_WARN;
+ }
return 0;
}
static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
{
- return pmbus_regulator_get_flags(rdev, flags, false);
+ int event;
+
+ return pmbus_regulator_get_flags(rdev, flags, &event, false);
}
static int pmbus_regulator_get_status(struct regulator_dev *rdev)
@@ -3124,7 +3147,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
{
struct pmbus_data *data = pdata;
struct i2c_client *client = to_i2c_client(data->dev);
- int i, ret = IRQ_NONE, status;
+ int i, ret = IRQ_NONE, status, event;
u8 page;
for (i = 0; i < data->info->num_regulators; i++) {
@@ -3132,7 +3155,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata)
if (!data->rdevs[i])
continue;
- ret = pmbus_regulator_get_flags(data->rdevs[i], &status, true);
+ ret = pmbus_regulator_get_flags(data->rdevs[i], &status, &event, true);
if (ret)
return ret;
--
2.37.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-12-01 19:30 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2022-12-01 19:29 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 2/5] hwmon: (pmbus/core): Add interrupt support Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 3/5] hwmon: (pmbus/core): Notify hwmon events Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support Naresh Solanki
2022-12-01 19:29 ` [PATCH v4 5/5] hwmon: (pmbus/core): Notify regulator events Naresh Solanki
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2022-12-01 19:03 [PATCH v4 1/5] hwmon: (pmbus/core): Add rdev in pmbus_data struct Naresh Solanki
2022-12-01 19:03 ` [PATCH v4 4/5] hwmon: (pmbus/core): Add regulator event support Naresh Solanki
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