On Friday 19 May 2017 09:23 PM, Andrew F. Davis wrote: > On 05/19/2017 07:42 AM, Keerthy wrote: >> The regulators set consists of 4 BUCKs. The output >> voltages are configurable and are meant to supply power to the >> main processor and other components. The ramp delay is configurable >> for all BUCKs. The BUCKs can be configured in single phase or >> multiphase modes. >> >> Signed-off-by: Keerthy <j-keerthy@xxxxxx> >> --- >> drivers/regulator/Kconfig | 8 ++ >> drivers/regulator/Makefile | 1 + >> drivers/regulator/lp87565-regulator.c | 244 ++++++++++++++++++++++++++++++++++ >> 3 files changed, 253 insertions(+) >> create mode 100644 drivers/regulator/lp87565-regulator.c >> >> diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig >> index 48db87d..7c34ff8 100644 >> --- a/drivers/regulator/Kconfig >> +++ b/drivers/regulator/Kconfig >> @@ -365,6 +365,14 @@ config REGULATOR_LP8755 >> chip contains six step-down DC/DC converters which can support >> 9 mode multiphase configuration. >> >> +config REGULATOR_LP87565 >> + tristate "TI LP87565 Power regulators" >> + depends on MFD_TI_LP87565 && OF >> + help >> + This driver supports LP87565 voltage regulator chips. LP87565 >> + provides four step-down converters. It supports software based >> + voltage control for different voltage domains >> + >> config REGULATOR_LP8788 >> tristate "TI LP8788 Power Regulators" >> depends on MFD_LP8788 >> diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile >> index dc3503f..fee6b8c 100644 >> --- a/drivers/regulator/Makefile >> +++ b/drivers/regulator/Makefile >> @@ -46,6 +46,7 @@ obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o >> obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o >> obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o >> obj-$(CONFIG_REGULATOR_LP873X) += lp873x-regulator.o >> +obj-$(CONFIG_REGULATOR_LP87565) += lp87565-regulator.o >> obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o >> obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o >> obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o >> diff --git a/drivers/regulator/lp87565-regulator.c b/drivers/regulator/lp87565-regulator.c >> new file mode 100644 >> index 0000000..5849cf3 >> --- /dev/null >> +++ b/drivers/regulator/lp87565-regulator.c >> @@ -0,0 +1,244 @@ >> +/* >> + * Regulator driver for LP87565 PMIC >> + * >> + * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/ >> + * >> + * This program is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU General Public License version 2 as >> + * published by the Free Software Foundation. >> + * >> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any >> + * kind, whether expressed or implied; without even the implied warranty >> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License version 2 for more details. >> + */ >> + >> +#include <linux/module.h> >> +#include <linux/platform_device.h> >> +#include <linux/regmap.h> >> + >> +#include <linux/mfd/lp87565.h> >> + >> +#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, _er, _em, \ >> + _delay, _lr, _cr) \ >> + [_id] = { \ >> + .desc = { \ >> + .name = _name, \ >> + .supply_name = _of "-in", \ >> + .id = _id, \ >> + .of_match = of_match_ptr(_of), \ >> + .regulators_node = of_match_ptr("regulators"),\ >> + .ops = &_ops, \ >> + .n_voltages = _n, \ >> + .type = REGULATOR_VOLTAGE, \ >> + .owner = THIS_MODULE, \ >> + .vsel_reg = _vr, \ >> + .vsel_mask = _vm, \ >> + .enable_reg = _er, \ >> + .enable_mask = _em, \ >> + .ramp_delay = _delay, \ >> + .linear_ranges = _lr, \ >> + .n_linear_ranges = ARRAY_SIZE(_lr), \ >> + }, \ >> + .ctrl2_reg = _cr, \ >> + } >> + >> +#define LP87565_Q1_MIN_IDX LP87565_BUCK_10 > > Unused? Yes! Thanks for catching it. > >> + >> +struct lp87565_regulator { >> + struct regulator_desc desc; >> + unsigned int ctrl2_reg; >> +}; >> + >> +static const struct lp87565_regulator regulators[]; >> + >> +static const struct regulator_linear_range buck0_1_2_3_ranges[] = { >> + REGULATOR_LINEAR_RANGE(500000, 0x0, 0x17, 10000), >> + REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000), >> + REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000), >> +}; >> + >> +static unsigned int lp87565_buck_ramp_delay[] = { >> + 30000, 15000, 10000, 7500, 3800, 1900, 940, 470 >> +}; >> + >> +/* LP87565 BUCK current limit */ >> +static const unsigned int lp87565_buck_uA[] = { >> + 1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000, >> +}; >> + >> +static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev, >> + int ramp_delay) >> +{ >> + int id = rdev_get_id(rdev); >> + struct lp87565 *lp87565 = rdev_get_drvdata(rdev); >> + unsigned int reg; >> + int ret; >> + >> + if (ramp_delay <= 470) >> + reg = 7; >> + else if (ramp_delay <= 940) >> + reg = 6; >> + else if (ramp_delay <= 1900) >> + reg = 5; >> + else if (ramp_delay <= 3800) >> + reg = 4; >> + else if (ramp_delay <= 7500) >> + reg = 3; >> + else if (ramp_delay <= 10000) >> + reg = 2; >> + else if (ramp_delay <= 15000) >> + reg = 1; >> + else >> + reg = 0; >> + >> + ret = regmap_update_bits(lp87565->regmap, regulators[id].ctrl2_reg, >> + LP87565_BUCK_CTRL_2_SLEW_RATE, >> + reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE)); >> + if (ret) { >> + dev_err(lp87565->dev, "SLEW RATE write failed: %d\n", ret); >> + return ret; >> + } >> + >> + rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg]; >> + >> + return 0; >> +} >> + >> +static int lp87565_buck_set_current_limit(struct regulator_dev *rdev, >> + int min_uA, int max_uA) >> +{ >> + int id = rdev_get_id(rdev); >> + struct lp87565 *lp87565 = rdev_get_drvdata(rdev); >> + int i; >> + >> + for (i = ARRAY_SIZE(lp87565_buck_uA) - 1; i >= 0; i--) { >> + if (lp87565_buck_uA[i] >= min_uA && >> + lp87565_buck_uA[i] <= max_uA) >> + return regmap_update_bits(lp87565->regmap, >> + regulators[id].ctrl2_reg, >> + LP87565_BUCK_CTRL_2_ILIM, >> + i << __ffs(LP87565_BUCK_CTRL_2_ILIM)); >> + } >> + >> + return -EINVAL; >> +} >> + >> +static int lp87565_buck_get_current_limit(struct regulator_dev *rdev) >> +{ >> + int id = rdev_get_id(rdev); >> + struct lp87565 *lp87565 = rdev_get_drvdata(rdev); >> + int ret; >> + unsigned int val; >> + >> + ret = regmap_read(lp87565->regmap, regulators[id].ctrl2_reg, &val); >> + if (ret) >> + return ret; >> + >> + val = (val & LP87565_BUCK_CTRL_2_ILIM) >> >> + __ffs(LP87565_BUCK_CTRL_2_ILIM); >> + >> + return (val < ARRAY_SIZE(lp87565_buck_uA)) ? >> + lp87565_buck_uA[val] : -EINVAL; >> +} >> + >> +/* Operations permitted on BUCK0, BUCK1 */ >> +static struct regulator_ops lp87565_buck_ops = { >> + .is_enabled = regulator_is_enabled_regmap, >> + .enable = regulator_enable_regmap, >> + .disable = regulator_disable_regmap, >> + .get_voltage_sel = regulator_get_voltage_sel_regmap, >> + .set_voltage_sel = regulator_set_voltage_sel_regmap, >> + .list_voltage = regulator_list_voltage_linear_range, >> + .map_voltage = regulator_map_voltage_linear_range, >> + .set_voltage_time_sel = regulator_set_voltage_time_sel, >> + .set_ramp_delay = lp87565_buck_set_ramp_delay, >> + .set_current_limit = lp87565_buck_set_current_limit, >> + .get_current_limit = lp87565_buck_get_current_limit, >> +}; >> + >> +static const struct lp87565_regulator regulators[] = { >> + LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK0_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2), >> + LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK1_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2), >> + LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK2_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2), >> + LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK3_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2), >> + LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK0_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2), >> + LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops, >> + 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET, >> + LP87565_REG_BUCK2_CTRL_1, >> + LP87565_BUCK_CTRL_1_EN, 3800, >> + buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2), >> +}; >> + >> +static int lp87565_regulator_probe(struct platform_device *pdev) >> +{ >> + struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent); >> + struct regulator_config config = { }; >> + struct regulator_dev *rdev; >> + int i, min_idx = LP87565_BUCK_1, max_idx = LP87565_BUCK_3; >> + >> + platform_set_drvdata(pdev, lp87565); >> + >> + config.dev = &pdev->dev; >> + config.dev->of_node = lp87565->dev->of_node; >> + config.driver_data = lp87565; >> + config.regmap = lp87565->regmap; >> + >> + if (lp87565->dev_type == LP87565_DEVICE_TYPE_LP87565_Q1) { >> + min_idx = LP87565_BUCK_10; >> + max_idx = LP87565_BUCK_23; >> + } >> + >> + for (i = min_idx; i <= max_idx; i++) { >> + rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc, >> + &config); >> + if (IS_ERR(rdev)) { >> + dev_err(lp87565->dev, "failed to register %s regulator\n", >> + pdev->name); >> + return PTR_ERR(rdev); >> + } >> + } >> + >> + return 0; >> +} >> + >> +static const struct platform_device_id lp87565_regulator_id_table[] = { >> + { "lp87565-regulator", }, >> + { "lp87565-q1-regulator", }, >> + { /* sentinel */ } >> +}; >> +MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table); >> + >> +static struct platform_driver lp87565_regulator_driver = { >> + .driver = { >> + .name = "lp87565-pmic", >> + }, >> + .probe = lp87565_regulator_probe, >> + .id_table = lp87565_regulator_id_table, >> +}; >> +module_platform_driver(lp87565_regulator_driver); >> + >> +MODULE_AUTHOR("J Keerthy <j-keerthy@xxxxxx>"); >> +MODULE_DESCRIPTION("LP87565 voltage regulator driver"); >> +MODULE_ALIAS("platform:lp87565-pmic"); > > Is this needed? This name is not used, and the above MODULE_DEVICE_TABLE > should take care of the needed aliases. Yes. This can be removed. I will do the changes and send a v2. > >> +MODULE_LICENSE("GPL v2"); >> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
