Lines Matching +full:use +full:- +full:vsel +full:- +full:dvs
2 * max8973-regulator.c -- Maxim max8973
4 * Regulator driver for MAXIM 8973 DC-DC step-down switching regulator.
22 * 02111-1307, USA
34 #include <linux/regulator/max8973-regulator.h>
136 * - If it is already there then it will make that register as most
140 * - If requested voltage is not found then it will use the least
150 int new_vout_reg = tps->lru_index[MAX8973_MAX_VOUT_REG - 1]; in find_voltage_set_register()
151 int found_index = MAX8973_MAX_VOUT_REG - 1; in find_voltage_set_register()
154 if (tps->curr_vout_val[tps->lru_index[i]] == req_vsel) { in find_voltage_set_register()
155 new_vout_reg = tps->lru_index[i]; in find_voltage_set_register()
163 for (i = found_index; i > 0; i--) in find_voltage_set_register()
164 tps->lru_index[i] = tps->lru_index[i - 1]; in find_voltage_set_register()
166 tps->lru_index[0] = new_vout_reg; in find_voltage_set_register()
178 ret = regmap_read(max->regmap, max->curr_vout_reg, &data); in max8973_dcdc_get_voltage_sel()
180 dev_err(max->dev, "register %d read failed, err = %d\n", in max8973_dcdc_get_voltage_sel()
181 max->curr_vout_reg, ret); in max8973_dcdc_get_voltage_sel()
188 unsigned vsel) in max8973_dcdc_set_voltage_sel() argument
193 int vout_reg = max->curr_vout_reg; in max8973_dcdc_set_voltage_sel()
194 int gpio_val = max->curr_gpio_val; in max8973_dcdc_set_voltage_sel()
200 if (gpio_is_valid(max->dvs_gpio)) in max8973_dcdc_set_voltage_sel()
201 found = find_voltage_set_register(max, vsel, in max8973_dcdc_set_voltage_sel()
205 ret = regmap_update_bits(max->regmap, vout_reg, in max8973_dcdc_set_voltage_sel()
206 MAX8973_VOUT_MASK, vsel); in max8973_dcdc_set_voltage_sel()
208 dev_err(max->dev, "register %d update failed, err %d\n", in max8973_dcdc_set_voltage_sel()
212 max->curr_vout_reg = vout_reg; in max8973_dcdc_set_voltage_sel()
213 max->curr_vout_val[gpio_val] = vsel; in max8973_dcdc_set_voltage_sel()
217 if (gpio_is_valid(max->dvs_gpio)) { in max8973_dcdc_set_voltage_sel()
218 gpio_set_value_cansleep(max->dvs_gpio, gpio_val & 0x1); in max8973_dcdc_set_voltage_sel()
219 max->curr_gpio_val = gpio_val; in max8973_dcdc_set_voltage_sel()
241 return -EINVAL; in max8973_dcdc_set_mode()
244 ret = regmap_update_bits(max->regmap, MAX8973_CONTROL1, in max8973_dcdc_set_mode()
247 dev_err(max->dev, "register %d update failed, err %d\n", in max8973_dcdc_set_mode()
258 ret = regmap_read(max->regmap, MAX8973_CONTROL1, &data); in max8973_dcdc_get_mode()
260 dev_err(max->dev, "register %d read failed, err %d\n", in max8973_dcdc_get_mode()
282 ret = regmap_update_bits(max->regmap, MAX8973_CONTROL2, in max8973_set_current_limit()
285 dev_err(max->dev, "register %d update failed: %d\n", in max8973_set_current_limit()
298 ret = regmap_read(max->regmap, MAX8973_CONTROL2, &control2); in max8973_get_current_limit()
300 dev_err(max->dev, "register %d read failed: %d\n", in max8973_get_current_limit()
339 ret = regmap_read(max->regmap, MAX8973_CONTROL1, &data); in max8973_init_dcdc()
341 dev_err(max->dev, "register %d read failed, err = %d", in max8973_init_dcdc()
348 max->desc.ramp_delay = 12000; in max8973_init_dcdc()
351 max->desc.ramp_delay = 25000; in max8973_init_dcdc()
354 max->desc.ramp_delay = 50000; in max8973_init_dcdc()
357 max->desc.ramp_delay = 200000; in max8973_init_dcdc()
361 if (pdata->control_flags & MAX8973_CONTROL_REMOTE_SENSE_ENABLE) in max8973_init_dcdc()
364 if (!(pdata->control_flags & MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE)) in max8973_init_dcdc()
367 if (pdata->control_flags & MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE) in max8973_init_dcdc()
370 if (pdata->control_flags & MAX8973_CONTROL_BIAS_ENABLE) { in max8973_init_dcdc()
372 max->desc.enable_time = 20; in max8973_init_dcdc()
374 max->desc.enable_time = 240; in max8973_init_dcdc()
377 if (pdata->control_flags & MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE) in max8973_init_dcdc()
380 if ((pdata->junction_temp_warning == MAX77621_TJINT_WARNING_TEMP_120) && in max8973_init_dcdc()
381 (max->id == MAX77621)) in max8973_init_dcdc()
384 if (!(pdata->control_flags & MAX8973_CONTROL_PULL_DOWN_ENABLE)) in max8973_init_dcdc()
388 switch (pdata->control_flags & MAX8973_CONTROL_CLKADV_TRIP_MASK) { in max8973_init_dcdc()
407 switch (pdata->control_flags & MAX8973_CONTROL_INDUCTOR_VALUE_MASK) { in max8973_init_dcdc()
425 ret = regmap_write(max->regmap, MAX8973_CONTROL1, control1); in max8973_init_dcdc()
427 dev_err(max->dev, "register %d write failed, err = %d", in max8973_init_dcdc()
432 ret = regmap_write(max->regmap, MAX8973_CONTROL2, control2); in max8973_init_dcdc()
434 dev_err(max->dev, "register %d write failed, err = %d", in max8973_init_dcdc()
440 if (max->enable_external_control && (max->id == MAX8973)) { in max8973_init_dcdc()
441 ret = regmap_update_bits(max->regmap, MAX8973_VOUT, in max8973_init_dcdc()
444 dev_err(max->dev, "register %d update failed, err = %d", in max8973_init_dcdc()
456 ret = regmap_read(mchip->regmap, MAX8973_CHIPID1, &val); in max8973_thermal_read_temp()
458 dev_err(mchip->dev, "Failed to read register CHIPID1, %d", ret); in max8973_thermal_read_temp()
464 *temp = mchip->junction_temp_warning + 1000; in max8973_thermal_read_temp()
475 thermal_zone_device_update(mchip->tz_device, in max8973_thermal_irq()
492 if (mchip->id != MAX77621) in max8973_thermal_init()
495 tzd = devm_thermal_zone_of_sensor_register(mchip->dev, 0, mchip, in max8973_thermal_init()
499 dev_err(mchip->dev, "Failed to register thermal sensor: %d\n", in max8973_thermal_init()
504 if (mchip->irq <= 0) in max8973_thermal_init()
507 irq_data = irq_get_irq_data(mchip->irq); in max8973_thermal_init()
511 ret = devm_request_threaded_irq(mchip->dev, mchip->irq, NULL, in max8973_thermal_init()
514 dev_name(mchip->dev), mchip); in max8973_thermal_init()
516 dev_err(mchip->dev, "Failed to request irq %d, %d\n", in max8973_thermal_init()
517 mchip->irq, ret); in max8973_thermal_init()
535 struct device_node *np = dev->of_node; in max8973_parse_dt()
545 pdata->enable_ext_control = of_property_read_bool(np, in max8973_parse_dt()
546 "maxim,externally-enable"); in max8973_parse_dt()
547 pdata->dvs_gpio = of_get_named_gpio(np, "maxim,dvs-gpio", 0); in max8973_parse_dt()
549 ret = of_property_read_u32(np, "maxim,dvs-default-state", &pval); in max8973_parse_dt()
551 pdata->dvs_def_state = pval; in max8973_parse_dt()
553 if (of_property_read_bool(np, "maxim,enable-remote-sense")) in max8973_parse_dt()
554 pdata->control_flags |= MAX8973_CONTROL_REMOTE_SENSE_ENABLE; in max8973_parse_dt()
556 if (of_property_read_bool(np, "maxim,enable-falling-slew-rate")) in max8973_parse_dt()
557 pdata->control_flags |= in max8973_parse_dt()
560 if (of_property_read_bool(np, "maxim,enable-active-discharge")) in max8973_parse_dt()
561 pdata->control_flags |= in max8973_parse_dt()
564 if (of_property_read_bool(np, "maxim,enable-frequency-shift")) in max8973_parse_dt()
565 pdata->control_flags |= MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE; in max8973_parse_dt()
567 if (of_property_read_bool(np, "maxim,enable-bias-control")) in max8973_parse_dt()
568 pdata->control_flags |= MAX8973_CONTROL_BIAS_ENABLE; in max8973_parse_dt()
570 etr_enable = of_property_read_bool(np, "maxim,enable-etr"); in max8973_parse_dt()
572 "maxim,enable-high-etr-sensitivity"); in max8973_parse_dt()
578 pdata->control_flags |= in max8973_parse_dt()
581 pdata->control_flags |= in max8973_parse_dt()
584 pdata->control_flags |= MAX8973_CONTROL_CLKADV_TRIP_DISABLED; in max8973_parse_dt()
587 pdata->junction_temp_warning = MAX77621_TJINT_WARNING_TEMP_140; in max8973_parse_dt()
588 ret = of_property_read_u32(np, "junction-warn-millicelsius", &pval); in max8973_parse_dt()
590 pdata->junction_temp_warning = MAX77621_TJINT_WARNING_TEMP_120; in max8973_parse_dt()
616 pdata = dev_get_platdata(&client->dev); in max8973_probe()
618 if (!pdata && client->dev.of_node) { in max8973_probe()
619 pdata = max8973_parse_dt(&client->dev); in max8973_probe()
624 dev_err(&client->dev, "No Platform data"); in max8973_probe()
625 return -EIO; in max8973_probe()
628 if (pdata->dvs_gpio == -EPROBE_DEFER) in max8973_probe()
629 return -EPROBE_DEFER; in max8973_probe()
631 max = devm_kzalloc(&client->dev, sizeof(*max), GFP_KERNEL); in max8973_probe()
633 return -ENOMEM; in max8973_probe()
635 max->regmap = devm_regmap_init_i2c(client, &max8973_regmap_config); in max8973_probe()
636 if (IS_ERR(max->regmap)) { in max8973_probe()
637 ret = PTR_ERR(max->regmap); in max8973_probe()
638 dev_err(&client->dev, "regmap init failed, err %d\n", ret); in max8973_probe()
642 if (client->dev.of_node) { in max8973_probe()
646 &client->dev); in max8973_probe()
648 return -ENODATA; in max8973_probe()
649 max->id = (u32)((uintptr_t)match->data); in max8973_probe()
651 max->id = id->driver_data; in max8973_probe()
654 ret = regmap_read(max->regmap, MAX8973_CHIPID1, &chip_id); in max8973_probe()
656 dev_err(&client->dev, "register CHIPID1 read failed, %d", ret); in max8973_probe()
660 dev_info(&client->dev, "CHIP-ID OTP: 0x%02x ID_M: 0x%02x\n", in max8973_probe()
664 max->ops = max8973_dcdc_ops; in max8973_probe()
665 max->dev = &client->dev; in max8973_probe()
666 max->desc.name = id->name; in max8973_probe()
667 max->desc.id = 0; in max8973_probe()
668 max->desc.ops = &max->ops; in max8973_probe()
669 max->desc.type = REGULATOR_VOLTAGE; in max8973_probe()
670 max->desc.owner = THIS_MODULE; in max8973_probe()
671 max->desc.min_uV = MAX8973_MIN_VOLATGE; in max8973_probe()
672 max->desc.uV_step = MAX8973_VOLATGE_STEP; in max8973_probe()
673 max->desc.n_voltages = MAX8973_BUCK_N_VOLTAGE; in max8973_probe()
674 max->desc.ramp_reg = MAX8973_CONTROL1; in max8973_probe()
675 max->desc.ramp_mask = MAX8973_RAMP_MASK; in max8973_probe()
676 max->desc.ramp_delay_table = max8973_buck_ramp_table; in max8973_probe()
677 max->desc.n_ramp_values = ARRAY_SIZE(max8973_buck_ramp_table); in max8973_probe()
679 max->dvs_gpio = (pdata->dvs_gpio) ? pdata->dvs_gpio : -EINVAL; in max8973_probe()
680 max->enable_external_control = pdata->enable_ext_control; in max8973_probe()
681 max->curr_gpio_val = pdata->dvs_def_state; in max8973_probe()
682 max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state; in max8973_probe()
683 max->junction_temp_warning = pdata->junction_temp_warning; in max8973_probe()
685 max->lru_index[0] = max->curr_vout_reg; in max8973_probe()
687 if (gpio_is_valid(max->dvs_gpio)) { in max8973_probe()
691 gpio_flags = (pdata->dvs_def_state) ? in max8973_probe()
693 ret = devm_gpio_request_one(&client->dev, max->dvs_gpio, in max8973_probe()
694 gpio_flags, "max8973-dvs"); in max8973_probe()
696 dev_err(&client->dev, in max8973_probe()
698 max->dvs_gpio, ret); in max8973_probe()
705 * set with the max->curr_vout_reg */ in max8973_probe()
707 max->lru_index[i] = i; in max8973_probe()
708 max->lru_index[0] = max->curr_vout_reg; in max8973_probe()
709 max->lru_index[max->curr_vout_reg] = 0; in max8973_probe()
712 * If there is no DVS GPIO, the VOUT register in max8973_probe()
715 max->ops.set_voltage_sel = regulator_set_voltage_sel_regmap; in max8973_probe()
716 max->ops.get_voltage_sel = regulator_get_voltage_sel_regmap; in max8973_probe()
717 max->desc.vsel_reg = max->curr_vout_reg; in max8973_probe()
718 max->desc.vsel_mask = MAX8973_VOUT_MASK; in max8973_probe()
722 pdata->reg_init_data = of_get_regulator_init_data(&client->dev, in max8973_probe()
723 client->dev.of_node, &max->desc); in max8973_probe()
725 ridata = pdata->reg_init_data; in max8973_probe()
726 switch (max->id) { in max8973_probe()
728 if (!pdata->enable_ext_control) { in max8973_probe()
729 max->desc.enable_reg = MAX8973_VOUT; in max8973_probe()
730 max->desc.enable_mask = MAX8973_VOUT_ENABLE; in max8973_probe()
731 max->ops.enable = regulator_enable_regmap; in max8973_probe()
732 max->ops.disable = regulator_disable_regmap; in max8973_probe()
733 max->ops.is_enabled = regulator_is_enabled_regmap; in max8973_probe()
737 if (ridata && (ridata->constraints.always_on || in max8973_probe()
738 ridata->constraints.boot_on)) in max8973_probe()
743 gpiod = devm_gpiod_get_optional(&client->dev, in max8973_probe()
750 max->enable_external_control = true; in max8973_probe()
760 gpiod = devm_gpiod_get_optional(&client->dev, in max8973_probe()
766 max->enable_external_control = true; in max8973_probe()
768 max->desc.enable_reg = MAX8973_VOUT; in max8973_probe()
769 max->desc.enable_mask = MAX8973_VOUT_ENABLE; in max8973_probe()
770 max->ops.enable = regulator_enable_regmap; in max8973_probe()
771 max->ops.disable = regulator_disable_regmap; in max8973_probe()
772 max->ops.is_enabled = regulator_is_enabled_regmap; in max8973_probe()
773 max->ops.set_current_limit = max8973_set_current_limit; in max8973_probe()
774 max->ops.get_current_limit = max8973_get_current_limit; in max8973_probe()
782 dev_err(max->dev, "Max8973 Init failed, err = %d\n", ret); in max8973_probe()
786 config.dev = &client->dev; in max8973_probe()
787 config.init_data = pdata->reg_init_data; in max8973_probe()
789 config.of_node = client->dev.of_node; in max8973_probe()
790 config.regmap = max->regmap; in max8973_probe()
798 devm_gpiod_unhinge(&client->dev, config.ena_gpiod); in max8973_probe()
799 rdev = devm_regulator_register(&client->dev, &max->desc, &config); in max8973_probe()
802 dev_err(max->dev, "regulator register failed, err %d\n", ret); in max8973_probe()