}
#endif
+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);
+
+ mutex_lock(&data->update_lock);
+ /* TODO: Check status flag & notify hwmon events */
+
+ pmbus_clear_faults(client);
+ 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_status_category *cat;
+ const struct pmbus_status_assoc *bit;
+ int i, j, err, func;
+ u8 mask;
+
+ static const u8 misc_status[] = {PMBUS_STATUS_CML, PMBUS_STATUS_OTHER,
+ PMBUS_STATUS_MFR_SPECIFIC, PMBUS_STATUS_FAN_12,
+ PMBUS_STATUS_FAN_34};
+
+ if (!client->irq)
+ return 0;
+
+ for (i = 0; i < data->info->pages; i++) {
+ func = data->info->func[i];
+
+ for (j = 0; j < ARRAY_SIZE(pmbus_status_flag_map); j++) {
+ cat = &pmbus_status_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_dbg_once(dev, "Failed to set smbalert for reg 0x%02x\n",
+ cat->reg);
+ }
+
+ for (j = 0; j < ARRAY_SIZE(misc_status); j++)
+ pmbus_write_smbalert_mask(client, i, misc_status[j], 0xff);
+ }
+
+ /* Register notifiers */
+ err = devm_request_threaded_irq(dev, client->irq, NULL, pmbus_fault_handler, 0,
+ "pmbus-irq", data);
+ if (err) {
+ dev_err(dev, "failed to request an irq %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
static struct dentry *pmbus_debugfs_dir; /* pmbus debugfs directory */
#if IS_ENABLED(CONFIG_DEBUG_FS)
if (ret)
return ret;
+ 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");