Lines Matching +full:gpio +full:- +full:charger
1 // SPDX-License-Identifier: GPL-2.0-only
3 * Motorola CPCAP PMIC battery charger driver
10 * Copyright (C) 2009-2010 Motorola, Inc.
26 #include <linux/gpio/consumer.h>
31 #include <linux/mfd/motorola-cpcap.h>
38 * similar. Also see the Motorola Linux kernel cpcap-regbits.h. CPCAP_REG_CHRGR_1
43 #define CPCAP_REG_CRM_CHRG_LED_EN BIT(13) /* Charger LED */
90 * values in "Table 8-3. Charge Path Regulator Current Limit
136 struct gpio_desc *gpio[2]; /* gpio_reven0 & 1 */ member
180 /* No battery always shows temperature of -40000 */
186 channel = ddata->channels[CPCAP_CHARGER_IIO_BATTDET]; in cpcap_charger_battery_found()
189 dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); in cpcap_charger_battery_found()
194 return temperature > -20000 && temperature < 60000; in cpcap_charger_battery_found()
202 channel = ddata->channels[CPCAP_CHARGER_IIO_VOLTAGE]; in cpcap_charger_get_charge_voltage()
205 dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); in cpcap_charger_get_charge_voltage()
218 channel = ddata->channels[CPCAP_CHARGER_IIO_CHRG_CURRENT]; in cpcap_charger_get_charge_current()
221 dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); in cpcap_charger_get_charge_current()
233 struct cpcap_charger_ddata *ddata = dev_get_drvdata(psy->dev.parent); in cpcap_charger_get_property()
237 val->intval = ddata->status; in cpcap_charger_get_property()
240 val->intval = ddata->voltage; in cpcap_charger_get_property()
243 if (ddata->status == POWER_SUPPLY_STATUS_CHARGING) in cpcap_charger_get_property()
244 val->intval = cpcap_charger_get_charge_voltage(ddata) * in cpcap_charger_get_property()
247 val->intval = 0; in cpcap_charger_get_property()
250 if (ddata->status == POWER_SUPPLY_STATUS_CHARGING) in cpcap_charger_get_property()
251 val->intval = cpcap_charger_get_charge_current(ddata) * in cpcap_charger_get_property()
254 val->intval = 0; in cpcap_charger_get_property()
257 val->intval = ddata->status == POWER_SUPPLY_STATUS_CHARGING; in cpcap_charger_get_property()
260 return -EINVAL; in cpcap_charger_get_property()
269 case 0 ... 4100000 - 1: return 3800000; in cpcap_charger_match_voltage()
270 case 4100000 ... 4120000 - 1: return 4100000; in cpcap_charger_match_voltage()
271 case 4120000 ... 4150000 - 1: return 4120000; in cpcap_charger_match_voltage()
272 case 4150000 ... 4170000 - 1: return 4150000; in cpcap_charger_match_voltage()
273 case 4170000 ... 4200000 - 1: return 4170000; in cpcap_charger_match_voltage()
274 case 4200000 ... 4230000 - 1: return 4200000; in cpcap_charger_match_voltage()
275 case 4230000 ... 4250000 - 1: return 4230000; in cpcap_charger_match_voltage()
276 case 4250000 ... 4270000 - 1: return 4250000; in cpcap_charger_match_voltage()
277 case 4270000 ... 4300000 - 1: return 4270000; in cpcap_charger_match_voltage()
278 case 4300000 ... 4330000 - 1: return 4300000; in cpcap_charger_match_voltage()
279 case 4330000 ... 4350000 - 1: return 4330000; in cpcap_charger_match_voltage()
280 case 4350000 ... 4380000 - 1: return 4350000; in cpcap_charger_match_voltage()
281 case 4380000 ... 4400000 - 1: return 4380000; in cpcap_charger_match_voltage()
282 case 4400000 ... 4420000 - 1: return 4400000; in cpcap_charger_match_voltage()
283 case 4420000 ... 4440000 - 1: return 4420000; in cpcap_charger_match_voltage()
294 int voltage = ddata->voltage; in cpcap_charger_get_bat_const_charge_voltage()
315 struct cpcap_charger_ddata *ddata = dev_get_drvdata(psy->dev.parent); in cpcap_charger_set_property()
320 voltage = cpcap_charger_match_voltage(val->intval); in cpcap_charger_set_property()
324 ddata->voltage = voltage; in cpcap_charger_set_property()
325 schedule_delayed_work(&ddata->detect_work, 0); in cpcap_charger_set_property()
328 return -EINVAL; in cpcap_charger_set_property()
348 if (!ddata->gpio[0]) in cpcap_charger_set_cable_path()
351 gpiod_set_value(ddata->gpio[0], enabled); in cpcap_charger_set_cable_path()
357 if (!ddata->gpio[1]) in cpcap_charger_set_inductive_path()
360 gpiod_set_value(ddata->gpio[1], enabled); in cpcap_charger_set_inductive_path()
371 dev_dbg(ddata->dev, "%s enable: %i\n", __func__, enable); in cpcap_charger_set_state()
374 error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, in cpcap_charger_set_state()
379 ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; in cpcap_charger_set_state()
383 ddata->status = POWER_SUPPLY_STATUS_DISCHARGING; in cpcap_charger_set_state()
388 error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff, in cpcap_charger_set_state()
396 ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; in cpcap_charger_set_state()
400 ddata->status = POWER_SUPPLY_STATUS_CHARGING; in cpcap_charger_set_state()
405 dev_err(ddata->dev, "%s failed with %i\n", __func__, error); in cpcap_charger_set_state()
414 ddata->channels[CPCAP_CHARGER_IIO_VBUS]; in cpcap_charger_vbus_valid()
420 dev_err(ddata->dev, "error reading VBUS: %i\n", error); in cpcap_charger_vbus_valid()
435 if (ddata->vbus_enabled) { in cpcap_charger_vbus_work()
438 dev_info(ddata->dev, "VBUS already provided\n"); in cpcap_charger_vbus_work()
443 ddata->feeding_vbus = true; in cpcap_charger_vbus_work()
451 error = regmap_update_bits(ddata->reg, CPCAP_REG_VUSBC, in cpcap_charger_vbus_work()
457 error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, in cpcap_charger_vbus_work()
463 error = regmap_update_bits(ddata->reg, CPCAP_REG_VUSBC, in cpcap_charger_vbus_work()
468 error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, in cpcap_charger_vbus_work()
475 ddata->feeding_vbus = false; in cpcap_charger_vbus_work()
481 dev_err(ddata->dev, "%s could not %s vbus: %i\n", __func__, in cpcap_charger_vbus_work()
482 ddata->vbus_enabled ? "enable" : "disable", error); in cpcap_charger_vbus_work()
492 ddata->vbus_enabled = enabled; in cpcap_charger_set_vbus()
493 schedule_delayed_work(&ddata->vbus_work, 0); in cpcap_charger_set_vbus()
498 /* Charger interrupt handling functions */
505 error = regmap_read(ddata->reg, CPCAP_REG_INTS1, &val); in cpcap_charger_get_ints_state()
509 s->chrg_det = val & BIT(13); in cpcap_charger_get_ints_state()
510 s->rvrs_chrg = val & BIT(12); in cpcap_charger_get_ints_state()
511 s->vbusov = val & BIT(11); in cpcap_charger_get_ints_state()
513 error = regmap_read(ddata->reg, CPCAP_REG_INTS2, &val); in cpcap_charger_get_ints_state()
517 s->chrg_se1b = val & BIT(13); in cpcap_charger_get_ints_state()
518 s->rvrs_mode = val & BIT(6); in cpcap_charger_get_ints_state()
519 s->chrgcurr2 = val & BIT(5); in cpcap_charger_get_ints_state()
520 s->chrgcurr1 = val & BIT(4); in cpcap_charger_get_ints_state()
521 s->vbusvld = val & BIT(3); in cpcap_charger_get_ints_state()
523 error = regmap_read(ddata->reg, CPCAP_REG_INTS4, &val); in cpcap_charger_get_ints_state()
527 s->battdetb = val & BIT(6); in cpcap_charger_get_ints_state()
538 dev_warn(ddata->dev, "unknown state: %i\n", state); in cpcap_charger_update_state()
543 ddata->state = state; in cpcap_charger_update_state()
562 dev_dbg(ddata->dev, "state: %s\n", status); in cpcap_charger_update_state()
570 case 0 ... 4100000 - 1: in cpcap_charger_voltage_to_regval()
572 case 4100000 ... 4200000 - 1: in cpcap_charger_voltage_to_regval()
575 case 4200000 ... 4300000 - 1: in cpcap_charger_voltage_to_regval()
578 case 4300000 ... 4380000 - 1: in cpcap_charger_voltage_to_regval()
579 offset = -1; in cpcap_charger_voltage_to_regval()
582 offset = -2; in cpcap_charger_voltage_to_regval()
588 return ((voltage - 4100000) / 20000) + offset; in cpcap_charger_voltage_to_regval()
601 power_supply_changed(ddata->usb); in cpcap_charger_disconnect()
602 schedule_delayed_work(&ddata->detect_work, delay); in cpcap_charger_disconnect()
618 /* Just init the state if a charger is connected with no chrg_det set */ in cpcap_usb_detect()
629 if (cpcap_charger_get_charge_voltage(ddata) > ddata->voltage) { in cpcap_usb_detect()
639 /* Throttle chrgcurr2 interrupt for charger done and retry */ in cpcap_usb_detect()
640 switch (ddata->state) { in cpcap_usb_detect()
660 if (!ddata->feeding_vbus && cpcap_charger_vbus_valid(ddata) && in cpcap_usb_detect()
670 vchrg = cpcap_charger_voltage_to_regval(ddata->voltage); in cpcap_usb_detect()
684 power_supply_changed(ddata->usb); in cpcap_usb_detect()
688 dev_err(ddata->dev, "%s failed with %i\n", __func__, error); in cpcap_usb_detect()
695 if (!atomic_read(&ddata->active)) in cpcap_charger_irq_thread()
698 schedule_delayed_work(&ddata->detect_work, 0); in cpcap_charger_irq_thread()
712 return -ENODEV; in cpcap_usb_init_irq()
714 error = devm_request_threaded_irq(ddata->dev, irq, NULL, in cpcap_usb_init_irq()
719 dev_err(ddata->dev, "could not get irq %s: %i\n", in cpcap_usb_init_irq()
725 d = devm_kzalloc(ddata->dev, sizeof(*d), GFP_KERNEL); in cpcap_usb_init_irq()
727 return -ENOMEM; in cpcap_usb_init_irq()
729 d->name = name; in cpcap_usb_init_irq()
730 d->irq = irq; in cpcap_usb_init_irq()
731 list_add(&d->node, &ddata->irq_list); in cpcap_usb_init_irq()
766 ddata->gpio[i] = devm_gpiod_get_index(ddata->dev, "mode", in cpcap_charger_init_optional_gpios()
768 if (IS_ERR(ddata->gpio[i])) { in cpcap_charger_init_optional_gpios()
769 dev_info(ddata->dev, "no mode change GPIO%i: %li\n", in cpcap_charger_init_optional_gpios()
770 i, PTR_ERR(ddata->gpio[i])); in cpcap_charger_init_optional_gpios()
771 ddata->gpio[i] = NULL; in cpcap_charger_init_optional_gpios()
784 ddata->channels[i] = devm_iio_channel_get(ddata->dev, in cpcap_charger_init_iio()
786 if (IS_ERR(ddata->channels[i])) { in cpcap_charger_init_iio()
787 error = PTR_ERR(ddata->channels[i]); in cpcap_charger_init_iio()
791 if (!ddata->channels[i]->indio_dev) { in cpcap_charger_init_iio()
792 error = -ENXIO; in cpcap_charger_init_iio()
800 if (error != -EPROBE_DEFER) in cpcap_charger_init_iio()
801 dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", in cpcap_charger_init_iio()
820 .compatible = "motorola,mapphone-cpcap-charger",
835 &pdev->dev); in cpcap_charger_probe()
837 return -EINVAL; in cpcap_charger_probe()
839 ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); in cpcap_charger_probe()
841 return -ENOMEM; in cpcap_charger_probe()
843 ddata->dev = &pdev->dev; in cpcap_charger_probe()
844 ddata->voltage = 4200000; in cpcap_charger_probe()
846 ddata->reg = dev_get_regmap(ddata->dev->parent, NULL); in cpcap_charger_probe()
847 if (!ddata->reg) in cpcap_charger_probe()
848 return -ENODEV; in cpcap_charger_probe()
850 INIT_LIST_HEAD(&ddata->irq_list); in cpcap_charger_probe()
851 INIT_DELAYED_WORK(&ddata->detect_work, cpcap_usb_detect); in cpcap_charger_probe()
852 INIT_DELAYED_WORK(&ddata->vbus_work, cpcap_charger_vbus_work); in cpcap_charger_probe()
859 atomic_set(&ddata->active, 1); in cpcap_charger_probe()
861 psy_cfg.of_node = pdev->dev.of_node; in cpcap_charger_probe()
864 ddata->usb = devm_power_supply_register(ddata->dev, in cpcap_charger_probe()
867 if (IS_ERR(ddata->usb)) { in cpcap_charger_probe()
868 error = PTR_ERR(ddata->usb); in cpcap_charger_probe()
869 dev_err(ddata->dev, "failed to register USB charger: %i\n", in cpcap_charger_probe()
879 ddata->comparator.set_vbus = cpcap_charger_set_vbus; in cpcap_charger_probe()
880 error = omap_usb2_set_comparator(&ddata->comparator); in cpcap_charger_probe()
881 if (error == -ENODEV) { in cpcap_charger_probe()
882 dev_info(ddata->dev, "charger needs phy, deferring probe\n"); in cpcap_charger_probe()
883 return -EPROBE_DEFER; in cpcap_charger_probe()
888 schedule_delayed_work(&ddata->detect_work, 0); in cpcap_charger_probe()
898 atomic_set(&ddata->active, 0); in cpcap_charger_remove()
901 dev_warn(ddata->dev, "could not clear USB comparator: %i\n", in cpcap_charger_remove()
906 dev_warn(ddata->dev, "could not clear charger: %i\n", in cpcap_charger_remove()
908 cancel_delayed_work_sync(&ddata->vbus_work); in cpcap_charger_remove()
909 cancel_delayed_work_sync(&ddata->detect_work); in cpcap_charger_remove()
917 .name = "cpcap-charger",
925 MODULE_DESCRIPTION("CPCAP Battery Charger Interface driver");
927 MODULE_ALIAS("platform:cpcap-charger");