diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 124 |
1 files changed, 69 insertions, 55 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6ef99df1a7d2..9f704a6c4802 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -964,7 +964,8 @@ static int drms_uA_update(struct regulator_dev *rdev) /* set the optimum mode for our new total regulator load */ err = rdev->desc->ops->set_load(rdev, current_uA); if (err < 0) - rdev_err(rdev, "failed to set load %d\n", current_uA); + rdev_err(rdev, "failed to set load %d: %pe\n", + current_uA, ERR_PTR(err)); } else { /* get output voltage */ output_uV = regulator_get_voltage_rdev(rdev); @@ -991,14 +992,15 @@ static int drms_uA_update(struct regulator_dev *rdev) /* check the new mode is allowed */ err = regulator_mode_constrain(rdev, &mode); if (err < 0) { - rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV\n", - current_uA, input_uV, output_uV); + rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV: %pe\n", + current_uA, input_uV, output_uV, ERR_PTR(err)); return err; } err = rdev->desc->ops->set_mode(rdev, mode); if (err < 0) - rdev_err(rdev, "failed to set optimum mode %x\n", mode); + rdev_err(rdev, "failed to set optimum mode %x: %pe\n", + mode, ERR_PTR(err)); } return err; @@ -1019,14 +1021,14 @@ static int __suspend_set_state(struct regulator_dev *rdev, ret = 0; if (ret < 0) { - rdev_err(rdev, "failed to enabled/disable\n"); + rdev_err(rdev, "failed to enabled/disable: %pe\n", ERR_PTR(ret)); return ret; } if (rdev->desc->ops->set_suspend_voltage && rstate->uV > 0) { ret = rdev->desc->ops->set_suspend_voltage(rdev, rstate->uV); if (ret < 0) { - rdev_err(rdev, "failed to set voltage\n"); + rdev_err(rdev, "failed to set voltage: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1034,7 +1036,7 @@ static int __suspend_set_state(struct regulator_dev *rdev, if (rdev->desc->ops->set_suspend_mode && rstate->mode > 0) { ret = rdev->desc->ops->set_suspend_mode(rdev, rstate->mode); if (ret < 0) { - rdev_err(rdev, "failed to set mode\n"); + rdev_err(rdev, "failed to set mode: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1111,10 +1113,15 @@ static void print_constraints(struct regulator_dev *rdev) if (constraints->valid_modes_mask & REGULATOR_MODE_IDLE) count += scnprintf(buf + count, len - count, "idle "); if (constraints->valid_modes_mask & REGULATOR_MODE_STANDBY) - count += scnprintf(buf + count, len - count, "standby"); + count += scnprintf(buf + count, len - count, "standby "); if (!count) - scnprintf(buf, len, "no parameters"); + count = scnprintf(buf, len, "no parameters"); + else + --count; + + count += scnprintf(buf + count, len - count, ", %s", + _regulator_is_enabled(rdev) ? "enabled" : "disabled"); rdev_dbg(rdev, "%s\n", buf); @@ -1149,8 +1156,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, if (current_uV < 0) { rdev_err(rdev, - "failed to get the current voltage(%d)\n", - current_uV); + "failed to get the current voltage: %pe\n", + ERR_PTR(current_uV)); return current_uV; } @@ -1179,8 +1186,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, rdev, target_min, target_max); if (ret < 0) { rdev_err(rdev, - "failed to apply %d-%duV constraint(%d)\n", - target_min, target_max, ret); + "failed to apply %d-%duV constraint: %pe\n", + target_min, target_max, ERR_PTR(ret)); return ret; } } @@ -1329,7 +1336,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, ret = ops->set_input_current_limit(rdev, rdev->constraints->ilim_uA); if (ret < 0) { - rdev_err(rdev, "failed to set input limit\n"); + rdev_err(rdev, "failed to set input limit: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1338,7 +1345,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, if (rdev->constraints->initial_state) { ret = suspend_set_initial_state(rdev); if (ret < 0) { - rdev_err(rdev, "failed to set suspend state\n"); + rdev_err(rdev, "failed to set suspend state: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1351,7 +1358,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, ret = ops->set_mode(rdev, rdev->constraints->initial_mode); if (ret < 0) { - rdev_err(rdev, "failed to set initial mode: %d\n", ret); + rdev_err(rdev, "failed to set initial mode: %pe\n", ERR_PTR(ret)); return ret; } } else if (rdev->constraints->system_load) { @@ -1366,7 +1373,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, && ops->set_ramp_delay) { ret = ops->set_ramp_delay(rdev, rdev->constraints->ramp_delay); if (ret < 0) { - rdev_err(rdev, "failed to set ramp_delay\n"); + rdev_err(rdev, "failed to set ramp_delay: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1374,7 +1381,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, if (rdev->constraints->pull_down && ops->set_pull_down) { ret = ops->set_pull_down(rdev); if (ret < 0) { - rdev_err(rdev, "failed to set pull down\n"); + rdev_err(rdev, "failed to set pull down: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1382,7 +1389,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, if (rdev->constraints->soft_start && ops->set_soft_start) { ret = ops->set_soft_start(rdev); if (ret < 0) { - rdev_err(rdev, "failed to set soft start\n"); + rdev_err(rdev, "failed to set soft start: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1391,7 +1398,8 @@ static int set_machine_constraints(struct regulator_dev *rdev, && ops->set_over_current_protection) { ret = ops->set_over_current_protection(rdev); if (ret < 0) { - rdev_err(rdev, "failed to set over current protection\n"); + rdev_err(rdev, "failed to set over current protection: %pe\n", + ERR_PTR(ret)); return ret; } } @@ -1402,7 +1410,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, ret = ops->set_active_discharge(rdev, ad_state); if (ret < 0) { - rdev_err(rdev, "failed to set active discharge\n"); + rdev_err(rdev, "failed to set active discharge: %pe\n", ERR_PTR(ret)); return ret; } } @@ -1422,7 +1430,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, ret = _regulator_do_enable(rdev); if (ret < 0 && ret != -EINVAL) { - rdev_err(rdev, "failed to enable\n"); + rdev_err(rdev, "failed to enable: %pe\n", ERR_PTR(ret)); return ret; } @@ -1646,8 +1654,8 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, err = sysfs_create_link_nowarn(&rdev->dev.kobj, &dev->kobj, supply_name); if (err) { - rdev_dbg(rdev, "could not add device link %s err %d\n", - dev->kobj.name, err); + rdev_dbg(rdev, "could not add device link %s: %pe\n", + dev->kobj.name, ERR_PTR(err)); /* non-fatal */ } } @@ -2435,7 +2443,7 @@ static int _regulator_do_enable(struct regulator_dev *rdev) if (ret >= 0) { delay = ret; } else { - rdev_warn(rdev, "enable_time() failed: %d\n", ret); + rdev_warn(rdev, "enable_time() failed: %pe\n", ERR_PTR(ret)); delay = 0; } @@ -2624,7 +2632,7 @@ static int _regulator_enable(struct regulator *regulator) _notifier_call_chain(rdev, REGULATOR_EVENT_ENABLE, NULL); } else if (ret < 0) { - rdev_err(rdev, "is_enabled() failed: %d\n", ret); + rdev_err(rdev, "is_enabled() failed: %pe\n", ERR_PTR(ret)); goto err_consumer_disable; } /* Fallthrough on positive return values - already enabled */ @@ -2726,7 +2734,7 @@ static int _regulator_disable(struct regulator *regulator) ret = _regulator_do_disable(rdev); if (ret < 0) { - rdev_err(rdev, "failed to disable\n"); + rdev_err(rdev, "failed to disable: %pe\n", ERR_PTR(ret)); _notifier_call_chain(rdev, REGULATOR_EVENT_ABORT_DISABLE, NULL); @@ -2793,7 +2801,7 @@ static int _regulator_force_disable(struct regulator_dev *rdev) ret = _regulator_do_disable(rdev); if (ret < 0) { - rdev_err(rdev, "failed to force disable\n"); + rdev_err(rdev, "failed to force disable: %pe\n", ERR_PTR(ret)); _notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE | REGULATOR_EVENT_ABORT_DISABLE, NULL); return ret; @@ -2872,7 +2880,8 @@ static void regulator_disable_work(struct work_struct *work) for (i = 0; i < count; i++) { ret = _regulator_disable(regulator); if (ret != 0) - rdev_err(rdev, "Deferred disable failed: %d\n", ret); + rdev_err(rdev, "Deferred disable failed: %pe\n", + ERR_PTR(ret)); } } WARN_ON(!total_count); @@ -3397,7 +3406,7 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev, } if (delay < 0) { - rdev_warn(rdev, "failed to get delay: %d\n", delay); + rdev_warn(rdev, "failed to get delay: %pe\n", ERR_PTR(delay)); delay = 0; } @@ -3549,8 +3558,8 @@ int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV, ret = regulator_set_voltage_unlocked(rdev->supply, best_supply_uV, INT_MAX, state); if (ret) { - dev_err(&rdev->dev, "Failed to increase supply voltage: %d\n", - ret); + dev_err(&rdev->dev, "Failed to increase supply voltage: %pe\n", + ERR_PTR(ret)); goto out; } } @@ -3567,8 +3576,8 @@ int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV, ret = regulator_set_voltage_unlocked(rdev->supply, best_supply_uV, INT_MAX, state); if (ret) - dev_warn(&rdev->dev, "Failed to decrease supply voltage: %d\n", - ret); + dev_warn(&rdev->dev, "Failed to decrease supply voltage: %pe\n", + ERR_PTR(ret)); /* No need to fail here */ ret = 0; } @@ -4554,8 +4563,8 @@ int regulator_bulk_get(struct device *dev, int num_consumers, err: if (ret != -EPROBE_DEFER) - dev_err(dev, "Failed to get supply '%s': %d\n", - consumers[i].supply, ret); + dev_err(dev, "Failed to get supply '%s': %pe\n", + consumers[i].supply, ERR_PTR(ret)); else dev_dbg(dev, "Failed to get supply '%s', deferring\n", consumers[i].supply); @@ -4613,8 +4622,8 @@ int regulator_bulk_enable(int num_consumers, err: for (i = 0; i < num_consumers; i++) { if (consumers[i].ret < 0) - pr_err("Failed to enable %s: %d\n", consumers[i].supply, - consumers[i].ret); + pr_err("Failed to enable %s: %pe\n", consumers[i].supply, + ERR_PTR(consumers[i].ret)); else regulator_disable(consumers[i].consumer); } @@ -4650,12 +4659,12 @@ int regulator_bulk_disable(int num_consumers, return 0; err: - pr_err("Failed to disable %s: %d\n", consumers[i].supply, ret); + pr_err("Failed to disable %s: %pe\n", consumers[i].supply, ERR_PTR(ret)); for (++i; i < num_consumers; ++i) { r = regulator_enable(consumers[i].consumer); if (r != 0) - pr_err("Failed to re-enable %s: %d\n", - consumers[i].supply, r); + pr_err("Failed to re-enable %s: %pe\n", + consumers[i].supply, ERR_PTR(r)); } return ret; @@ -5038,8 +5047,8 @@ static void regulator_remove_coupling(struct regulator_dev *rdev) if (coupler && coupler->detach_regulator) { err = coupler->detach_regulator(coupler, rdev); if (err) - rdev_err(rdev, "failed to detach from coupler: %d\n", - err); + rdev_err(rdev, "failed to detach from coupler: %pe\n", + ERR_PTR(err)); } kfree(rdev->coupling_desc.coupled_rdevs); @@ -5083,7 +5092,7 @@ static int regulator_init_coupling(struct regulator_dev *rdev) if (IS_ERR(rdev->coupling_desc.coupler)) { err = PTR_ERR(rdev->coupling_desc.coupler); - rdev_err(rdev, "failed to get coupler: %d\n", err); + rdev_err(rdev, "failed to get coupler: %pe\n", ERR_PTR(err)); return err; } @@ -5246,8 +5255,8 @@ regulator_register(const struct regulator_desc *regulator_desc, if (config->ena_gpiod) { ret = regulator_ena_gpio_request(rdev, config); if (ret != 0) { - rdev_err(rdev, "Failed to request enable GPIO: %d\n", - ret); + rdev_err(rdev, "Failed to request enable GPIO: %pe\n", + ERR_PTR(ret)); goto clean; } /* The regulator core took over the GPIO descriptor */ @@ -5271,15 +5280,20 @@ regulator_register(const struct regulator_desc *regulator_desc, else if (regulator_desc->supply_name) rdev->supply_name = regulator_desc->supply_name; - /* - * Attempt to resolve the regulator supply, if specified, - * but don't return an error if we fail because we will try - * to resolve it again later as more regulators are added. - */ - if (regulator_resolve_supply(rdev)) - rdev_dbg(rdev, "unable to resolve supply\n"); - ret = set_machine_constraints(rdev, constraints); + if (ret == -EPROBE_DEFER) { + /* Regulator might be in bypass mode and so needs its supply + * to set the constraints */ + /* FIXME: this currently triggers a chicken-and-egg problem + * when creating -SUPPLY symlink in sysfs to a regulator + * that is just being created */ + ret = regulator_resolve_supply(rdev); + if (!ret) + ret = set_machine_constraints(rdev, constraints); + else + rdev_dbg(rdev, "unable to resolve supply early: %pe\n", + ERR_PTR(ret)); + } if (ret < 0) goto wash; @@ -5832,7 +5846,7 @@ static int regulator_late_cleanup(struct device *dev, void *data) rdev_info(rdev, "disabling\n"); ret = _regulator_do_disable(rdev); if (ret != 0) - rdev_err(rdev, "couldn't disable: %d\n", ret); + rdev_err(rdev, "couldn't disable: %pe\n", ERR_PTR(ret)); } else { /* The intention is that in future we will * assume that full constraints are provided |