Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752311AbaBNGcs (ORCPT ); Fri, 14 Feb 2014 01:32:48 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:51936 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752270AbaBNGcp (ORCPT ); Fri, 14 Feb 2014 01:32:45 -0500 From: Milo Kim To: Lee Jones , Jingoo Han , Bryan Wu , Mark Brown CC: , , Samuel Ortiz , Milo Kim Subject: [PATCH 09/10] regulator: Add LM3631 driver Date: Fri, 14 Feb 2014 15:32:31 +0900 Message-ID: <1392359551-7170-1-git-send-email-milo.kim@ti.com> X-Mailer: git-send-email 1.7.10.4 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org LM3631 regulator driver has 5 regulators. One boost output and four LDOs are used for the display module. Boost voltage is configurable but always on. Supported operations for LDOs are enabled/disabled and voltage change. Cc: Mark Brown Signed-off-by: Milo Kim --- drivers/regulator/Kconfig | 8 + drivers/regulator/Makefile | 1 + drivers/regulator/lm3631-regulator.c | 285 ++++++++++++++++++++++++++++++++++ 3 files changed, 294 insertions(+) create mode 100644 drivers/regulator/lm3631-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 6a79328..9809d7b 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -221,6 +221,14 @@ config REGULATOR_ISL6271A help This driver supports ISL6271A voltage regulator chip. +config REGULATOR_LM3631 + tristate "TI LM3631 voltage regulators" + depends on MFD_TI_LMU + help + This driver supports LM3631 voltage regulators for the LCD bias. + One boost output voltage is configurable and always on. + Four LDOs are used for the display module. + config REGULATOR_LP3971 tristate "National Semiconductors LP3971 PMIC regulator driver" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 979f9dd..b20070d 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o +obj-$(CONFIG_REGULATOR_LM3631) += lm3631-regulator.o obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o diff --git a/drivers/regulator/lm3631-regulator.c b/drivers/regulator/lm3631-regulator.c new file mode 100644 index 0000000..930bad4 --- /dev/null +++ b/drivers/regulator/lm3631-regulator.c @@ -0,0 +1,285 @@ +/* + * TI LM3631 Regulator Driver + * + * Copyright 2014 Texas Instruments + * + * Author: Milo Kim + * + * 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ENABLE_TIME_USEC 1000 + +enum lm3631_regulator_id { + LM3631_BOOST, /* Boost output */ + LM3631_LDO_CONT, /* Display panel controller */ + LM3631_LDO_OREF, /* Gamma reference */ + LM3631_LDO_POS, /* Positive display bias output */ + LM3631_LDO_NEG, /* Negative display bias output */ +}; + +struct lm3631_regulator { + struct ti_lmu *lmu; + struct regulator_desc *desc; + struct regulator_dev *regulator; +}; + +static const int lm3631_boost_vtbl[] = { + 4500000, 4550000, 4600000, 4650000, 4700000, 4750000, 4800000, 4850000, + 4900000, 4950000, 5000000, 5050000, 5100000, 5150000, 5200000, 5250000, + 5300000, 5350000, 5400000, 5450000, 5500000, 5550000, 5600000, 5650000, + 5700000, 5750000, 5800000, 5850000, 5900000, 5950000, 6000000, 6050000, + 6100000, 6150000, 6200000, 6250000, 6300000, 6350000, +}; + +static const int lm3631_ldo_cont_vtbl[] = { + 1800000, 2300000, 2800000, 3300000, +}; + +static const int lm3631_ldo_target_vtbl[] = { + 4000000, 4050000, 4100000, 4150000, 4200000, 4250000, 4300000, 4350000, + 4400000, 4450000, 4500000, 4550000, 4600000, 4650000, 4700000, 4750000, + 4800000, 4850000, 4900000, 4950000, 5000000, 5050000, 5100000, 5150000, + 5200000, 5250000, 5300000, 5350000, 5400000, 5450000, 5500000, 5550000, + 5600000, 5650000, 5700000, 5750000, 5800000, 5850000, 5900000, 5950000, + 6000000, +}; + +const int ldo_cont_enable_time[] = { + 0, 2000, 5000, 10000, 20000, 50000, 100000, 200000, +}; + +static int lm3631_regulator_enable_time(struct regulator_dev *rdev) +{ + struct lm3631_regulator *lm3631_regulator = rdev_get_drvdata(rdev); + enum lm3631_regulator_id id = rdev_get_id(rdev); + u8 val, addr, mask; + + switch (id) { + case LM3631_LDO_CONT: + addr = LM3631_REG_ENTIME_VCONT; + mask = LM3631_ENTIME_CONT_MASK; + break; + case LM3631_LDO_OREF: + addr = LM3631_REG_ENTIME_VOREF; + mask = LM3631_ENTIME_MASK; + break; + case LM3631_LDO_POS: + addr = LM3631_REG_ENTIME_VPOS; + mask = LM3631_ENTIME_MASK; + break; + case LM3631_LDO_NEG: + addr = LM3631_REG_ENTIME_VNEG; + mask = LM3631_ENTIME_MASK; + break; + default: + return -EINVAL; + } + + if (ti_lmu_read_byte(lm3631_regulator->lmu, addr, &val)) + return -EINVAL; + + val = (val & mask) >> LM3631_ENTIME_SHIFT; + + if (id == LM3631_LDO_CONT) + return ldo_cont_enable_time[val]; + else + return ENABLE_TIME_USEC * val; +} + +static struct regulator_ops lm3631_boost_voltage_table_ops = { + .list_voltage = regulator_list_voltage_table, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, +}; + +static struct regulator_ops lm3631_regulator_voltage_table_ops = { + .list_voltage = regulator_list_voltage_table, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .enable_time = lm3631_regulator_enable_time, +}; + +static struct regulator_desc lm3631_regulator_desc[] = { + { + .name = "vboost", + .id = LM3631_BOOST, + .ops = &lm3631_boost_voltage_table_ops, + .n_voltages = ARRAY_SIZE(lm3631_boost_vtbl), + .volt_table = lm3631_boost_vtbl, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .vsel_reg = LM3631_REG_VOUT_BOOST, + .vsel_mask = LM3631_VOUT_MASK, + }, + { + .name = "ldo_cont", + .id = LM3631_LDO_CONT, + .ops = &lm3631_regulator_voltage_table_ops, + .n_voltages = ARRAY_SIZE(lm3631_ldo_cont_vtbl), + .volt_table = lm3631_ldo_cont_vtbl, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .vsel_reg = LM3631_REG_VOUT_CONT, + .vsel_mask = LM3631_VOUT_CONT_MASK, + .enable_reg = LM3631_REG_LDO_CTRL2, + .enable_mask = LM3631_EN_CONT_MASK, + }, + { + .name = "ldo_oref", + .id = LM3631_LDO_OREF, + .ops = &lm3631_regulator_voltage_table_ops, + .n_voltages = ARRAY_SIZE(lm3631_ldo_target_vtbl), + .volt_table = lm3631_ldo_target_vtbl, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .vsel_reg = LM3631_REG_VOUT_OREF, + .vsel_mask = LM3631_VOUT_MASK, + .enable_reg = LM3631_REG_LDO_CTRL1, + .enable_mask = LM3631_EN_OREF_MASK, + }, + { + .name = "ldo_vpos", + .id = LM3631_LDO_POS, + .ops = &lm3631_regulator_voltage_table_ops, + .n_voltages = ARRAY_SIZE(lm3631_ldo_target_vtbl), + .volt_table = lm3631_ldo_target_vtbl, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .vsel_reg = LM3631_REG_VOUT_POS, + .vsel_mask = LM3631_VOUT_MASK, + .enable_reg = LM3631_REG_LDO_CTRL1, + .enable_mask = LM3631_EN_VPOS_MASK, + }, + { + .name = "ldo_vneg", + .id = LM3631_LDO_NEG, + .ops = &lm3631_regulator_voltage_table_ops, + .n_voltages = ARRAY_SIZE(lm3631_ldo_target_vtbl), + .volt_table = lm3631_ldo_target_vtbl, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .vsel_reg = LM3631_REG_VOUT_NEG, + .vsel_mask = LM3631_VOUT_MASK, + .enable_reg = LM3631_REG_LDO_CTRL1, + .enable_mask = LM3631_EN_VNEG_MASK, + }, +}; + +static struct of_regulator_match lm3631_regulator_matches[] = { + { .name = "vboost", .driver_data = (void *)LM3631_BOOST, }, + { .name = "vcont", .driver_data = (void *)LM3631_LDO_CONT, }, + { .name = "voref", .driver_data = (void *)LM3631_LDO_OREF, }, + { .name = "vpos", .driver_data = (void *)LM3631_LDO_POS, }, + { .name = "vneg", .driver_data = (void *)LM3631_LDO_NEG, }, +}; + +static struct regulator_init_data * +lm3631_regulator_parse_dt(struct device *dev, + struct lm3631_regulator *lm3631_regulator, int id) +{ + struct device_node *node = dev->of_node; + int count; + + count = of_regulator_match(dev, node, &lm3631_regulator_matches[id], 1); + if (count <= 0) + return ERR_PTR(-ENODEV); + + return lm3631_regulator_matches[id].init_data; +} + +static int lm3631_regulator_probe(struct platform_device *pdev) +{ + struct ti_lmu *lmu = dev_get_drvdata(pdev->dev.parent); + struct lm3631_regulator *lm3631_regulator; + struct regulator_init_data *init_data; + struct regulator_config cfg = { }; + struct regulator_dev *rdev; + int id = pdev->id; + int ret; + + lm3631_regulator = devm_kzalloc(&pdev->dev, sizeof(*lm3631_regulator), + GFP_KERNEL); + if (!lm3631_regulator) + return -ENOMEM; + + lm3631_regulator->lmu = lmu; + + init_data = lmu->pdata->regulator_data[id]; + if (!init_data) { + if (IS_ENABLED(CONFIG_OF)) { + init_data = lm3631_regulator_parse_dt(&pdev->dev, + lm3631_regulator, + id); + if (IS_ERR(init_data)) + return PTR_ERR(init_data); + } + } + + cfg.dev = pdev->dev.parent; + cfg.init_data = init_data; + cfg.driver_data = lm3631_regulator; + cfg.regmap = lmu->regmap; + + rdev = regulator_register(&lm3631_regulator_desc[id], &cfg); + if (IS_ERR(rdev)) { + ret = PTR_ERR(rdev); + dev_err(&pdev->dev, "[%d] regulator register err: %d\n", + id + 1, ret); + return ret; + } + + lm3631_regulator->regulator = rdev; + platform_set_drvdata(pdev, lm3631_regulator); + + return 0; +} + +static int lm3631_regulator_remove(struct platform_device *pdev) +{ + struct lm3631_regulator *lm3631_regulator = platform_get_drvdata(pdev); + + regulator_unregister(lm3631_regulator->regulator); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id lm3631_regulator_of_match[] = { + { .compatible = "ti,lm3631-regulator", }, + { } +}; +MODULE_DEVICE_TABLE(of, lm3631_regulator_of_match); +#endif + +static struct platform_driver lm3631_regulator_driver = { + .probe = lm3631_regulator_probe, + .remove = lm3631_regulator_remove, + .driver = { + .name = "lm3631-regulator", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(lm3631_regulator_of_match), + }, +}; + +module_platform_driver(lm3631_regulator_driver); + +MODULE_DESCRIPTION("TI LM3631 Regulator Driver"); +MODULE_AUTHOR("Milo Kim"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:lm3631-regulator"); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/