Lines Matching +full:snvs +full:- +full:poweroff
1 // SPDX-License-Identifier: GPL-2.0
3 // bd71837-regulator.c ROHM BD71837MWV/BD71847MWV regulator driver
9 #include <linux/mfd/rohm-bd718x7.h>
50 * controlled by software - or by PMIC internal HW state machine. Whether
51 * regulator should be under SW or HW control can be defined from device-tree.
95 dev_dbg(&rdev->dev, "Buck[%d] Set Ramp = %d\n", id + 1, in bd718xx_buck1234_set_ramp_delay()
112 dev_err(&rdev->dev, in bd718xx_buck1234_set_ramp_delay()
114 rdev->desc->name, ramp_delay); in bd718xx_buck1234_set_ramp_delay()
117 return regmap_update_bits(rdev->regmap, BD718XX_REG_BUCK1_CTRL + id, in bd718xx_buck1234_set_ramp_delay()
127 * Note for next hacker - these PMICs have a register where the HW state can be
128 * read. If assuming RUN appears to be false in your use-case - you can
147 ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val); in bd71837_get_buck34_enable_hwctrl()
157 * is changed. Hence we return -EBUSY for these if voltage is changed
161 * enabled. But if voltage is increased the LDO power-good monitoring
169 if (rdev->desc->ops->is_enabled(rdev)) in bd71837_set_voltage_sel_restricted()
170 return -EBUSY; in bd71837_set_voltage_sel_restricted()
183 * guarantee minimum of 1ms sleep - it shouldn't matter if we in voltage_change_done()
193 * aware of such use-cases so for the sake of the simplicity in voltage_change_done()
196 ret = regmap_update_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2, in voltage_change_done()
199 dev_err(&rdev->dev, in voltage_change_done()
200 "Failed to re-enable voltage monitoring (%d)\n", in voltage_change_done()
211 if (rdev->desc->ops->is_enabled(rdev)) { in voltage_change_prepare()
214 now = rdev->desc->ops->get_voltage_sel(rdev); in voltage_change_prepare()
218 now = rdev->desc->ops->list_voltage(rdev, now); in voltage_change_prepare()
222 new = rdev->desc->ops->list_voltage(rdev, sel); in voltage_change_prepare()
228 * disable the power-good detection until voltage has reached in voltage_change_prepare()
231 * this might be less - and we could probably use DT to give in voltage_change_prepare()
241 int ldo_offset = rdev->desc->id - BD718XX_LDO1; in voltage_change_prepare()
244 ret = regmap_update_bits(rdev->regmap, in voltage_change_prepare()
248 dev_err(&rdev->dev, in voltage_change_prepare()
293 if (rdev->desc->ops->is_enabled(rdev)) in bd71837_set_voltage_sel_pickable_restricted()
294 return -EBUSY; in bd71837_set_voltage_sel_pickable_restricted()
385 * OPS for all of the ICs - BD718(37/47/50)
572 * At PMIC poweroff the voltage for BUCK6/7 is cut immediately at the
573 * beginning of shut-down sequence. As bucks 6 and 7 are parent
574 * supplies for LDO5 and LDO6 - this causes LDO5/6 voltage
576 * emergency state instead of poweroff. In order to avoid this we
603 return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap); in buck_set_hw_dvs_levels()
1373 if (!of_node_name_eq(np, reg_data[i-1].desc.of_match)) in mark_hw_controlled()
1376 *info |= 1 << (i - 1); in mark_hw_controlled()
1388 struct device_node *nproot = dev->of_node; in get_hw_controlled_regulators()
1389 const char *prop = "rohm,no-regulator-enable-control"; in get_hw_controlled_regulators()
1396 return -ENODEV; in get_hw_controlled_regulators()
1415 enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data; in bd718xx_probe()
1418 mfd = dev_get_drvdata(pdev->dev.parent); in bd718xx_probe()
1420 dev_err(&pdev->dev, "No MFD driver data\n"); in bd718xx_probe()
1421 err = -EINVAL; in bd718xx_probe()
1439 dev_err(&pdev->dev, "Unsupported chip type\n"); in bd718xx_probe()
1440 err = -EINVAL; in bd718xx_probe()
1445 err = regmap_update_bits(mfd->chip.regmap, BD718XX_REG_REGLOCK, in bd718xx_probe()
1448 dev_err(&pdev->dev, "Failed to unlock PMIC (%d)\n", err); in bd718xx_probe()
1451 dev_dbg(&pdev->dev, "Unlocked lock register 0x%x\n", in bd718xx_probe()
1455 use_snvs = of_property_read_bool(pdev->dev.parent->of_node, in bd718xx_probe()
1456 "rohm,reset-snvs-powered"); in bd718xx_probe()
1459 * Change the next stage from poweroff to be READY instead of SNVS in bd718xx_probe()
1464 err = regmap_update_bits(mfd->chip.regmap, in bd718xx_probe()
1472 dev_err(&pdev->dev, "Failed to change reset target\n"); in bd718xx_probe()
1475 dev_dbg(&pdev->dev, in bd718xx_probe()
1480 config.dev = pdev->dev.parent; in bd718xx_probe()
1481 config.regmap = mfd->chip.regmap; in bd718xx_probe()
1483 * There are cases when we want to leave the enable-control for in bd718xx_probe()
1489 * be affected by PMIC state machine - Eg. regulator is likely to stay in bd718xx_probe()
1492 get_hw_controlled_regulators(pdev->dev.parent, reg_data, num_reg_data, in bd718xx_probe()
1503 desc = &r->desc; in bd718xx_probe()
1506 desc->ops = hwops[i]; in bd718xx_probe()
1508 desc->ops = swops[i]; in bd718xx_probe()
1510 rdev = devm_regulator_register(&pdev->dev, desc, &config); in bd718xx_probe()
1512 dev_err(&pdev->dev, in bd718xx_probe()
1514 desc->name); in bd718xx_probe()
1526 * At poweroff transition PMIC HW disables EN bit for in bd718xx_probe()
1528 * transition from POWEROFF is done to SNVS - then all power in bd718xx_probe()
1532 * enable SW control for crucial regulators if snvs state is in bd718xx_probe()
1536 !rdev->constraints->always_on || in bd718xx_probe()
1537 !rdev->constraints->boot_on)) { in bd718xx_probe()
1538 err = regmap_update_bits(mfd->chip.regmap, r->init.reg, in bd718xx_probe()
1539 r->init.mask, r->init.val); in bd718xx_probe()
1541 dev_err(&pdev->dev, in bd718xx_probe()
1543 desc->name); in bd718xx_probe()
1547 for (j = 0; j < r->additional_init_amnt; j++) { in bd718xx_probe()
1548 err = regmap_update_bits(mfd->chip.regmap, in bd718xx_probe()
1549 r->additional_inits[j].reg, in bd718xx_probe()
1550 r->additional_inits[j].mask, in bd718xx_probe()
1551 r->additional_inits[j].val); in bd718xx_probe()
1553 dev_err(&pdev->dev, in bd718xx_probe()
1555 desc->name); in bd718xx_probe()
1566 { "bd71837-pmic", ROHM_CHIP_TYPE_BD71837 },
1567 { "bd71847-pmic", ROHM_CHIP_TYPE_BD71847 },
1574 .name = "bd718xx-pmic",
1585 MODULE_ALIAS("platform:bd718xx-pmic");