Merge remote-tracking branches 'regulator/topic/fixed', 'regulator/topic/id-const', 'regulator/topic/ltc3589', 'regulator/topic/max8649' and 'regulator/topic/of' into regulator-next
This commit is contained in:
Mark Brown
Коммит
2c7a6a3547
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@ -0,0 +1,99 @@
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Linear Technology LTC3589, LTC3589-1, and LTC3589-2 8-output regulators
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||||
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Required properties:
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- compatible: "lltc,ltc3589", "lltc,ltc3589-1" or "lltc,ltc3589-2"
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- reg: I2C slave address
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Required child node:
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- regulators: Contains eight regulator child nodes sw1, sw2, sw3, bb-out,
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ldo1, ldo2, ldo3, and ldo4, specifying the initialization data as
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documented in Documentation/devicetree/bindings/regulator/regulator.txt.
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||||
Each regulator is defined using the standard binding for regulators. The
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nodes for sw1, sw2, sw3, bb-out, ldo1, and ldo2 additionally need to specify
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the resistor values of their external feedback voltage dividers:
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Required properties (not on ldo3, ldo4):
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- lltc,fb-voltage-divider: An array of two integers containing the resistor
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values R1 and R2 of the feedback voltage divider in ohms.
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Regulators sw1, sw2, sw3, and ldo2 can regulate the feedback reference from
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0.3625 V to 0.75 V in 12.5 mV steps. The output voltage thus ranges between
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0.3625 * (1 + R1/R2) V and 0.75 * (1 + R1/R2) V. Regulators bb-out and ldo1
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have a fixed 0.8 V reference and thus output 0.8 * (1 + R1/R2) V. The ldo3
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regulator is fixed to 1.8 V on LTC3589 and to 2.8 V on LTC3589-1,2. The ldo4
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regulator can output between 1.8 V and 3.3 V on LTC3589 and between 1.2 V
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and 3.2 V on LTC3589-1,2 in four steps. The ldo1 standby regulator can not
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be disabled and thus should have the regulator-always-on property set.
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Example:
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ltc3589: pmic@34 {
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compatible = "lltc,ltc3589-1";
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reg = <0x34>;
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regulators {
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sw1_reg: sw1 {
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regulator-min-microvolt = <591930>;
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regulator-max-microvolt = <1224671>;
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lltc,fb-voltage-divider = <100000 158000>;
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regulator-ramp-delay = <7000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sw2_reg: sw2 {
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regulator-min-microvolt = <704123>;
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regulator-max-microvolt = <1456803>;
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lltc,fb-voltage-divider = <180000 191000>;
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regulator-ramp-delay = <7000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sw3_reg: sw3 {
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regulator-min-microvolt = <1341250>;
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regulator-max-microvolt = <2775000>;
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lltc,fb-voltage-divider = <270000 100000>;
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regulator-ramp-delay = <7000>;
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regulator-boot-on;
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regulator-always-on;
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};
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bb_out_reg: bb-out {
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regulator-min-microvolt = <3387341>;
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regulator-max-microvolt = <3387341>;
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lltc,fb-voltage-divider = <511000 158000>;
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regulator-boot-on;
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regulator-always-on;
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};
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ldo1_reg: ldo1 {
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regulator-min-microvolt = <1306329>;
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regulator-max-microvolt = <1306329>;
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lltc,fb-voltage-divider = <100000 158000>;
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regulator-boot-on;
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regulator-always-on;
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};
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ldo2_reg: ldo2 {
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regulator-min-microvolt = <704123>;
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regulator-max-microvolt = <1456806>;
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lltc,fb-voltage-divider = <180000 191000>;
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regulator-ramp-delay = <7000>;
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regulator-boot-on;
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regulator-always-on;
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};
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ldo3_reg: ldo3 {
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regulator-min-microvolt = <2800000>;
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regulator-max-microvolt = <2800000>;
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regulator-boot-on;
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};
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ldo4_reg: ldo4 {
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <3200000>;
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};
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};
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};
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@ -73,6 +73,7 @@ lantiq Lantiq Semiconductor
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lg LG Corporation
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linux Linux-specific binding
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lsi LSI Corp. (LSI Logic)
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lltc Linear Technology Corporation
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marvell Marvell Technology Group Ltd.
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maxim Maxim Integrated Products
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microchip Microchip Technology Inc.
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@ -272,6 +272,14 @@ config REGULATOR_LP8788
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help
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This driver supports LP8788 voltage regulator chip.
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config REGULATOR_LTC3589
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tristate "LTC3589 8-output voltage regulator"
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depends on I2C
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select REGMAP_I2C
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help
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This enables support for the LTC3589, LTC3589-1, and LTC3589-2
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8-output regulators controlled via I2C.
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config REGULATOR_MAX14577
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tristate "Maxim 14577 regulator"
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depends on MFD_MAX14577
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@ -38,6 +38,7 @@ obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o
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obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o
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obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o
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obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o
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obj-$(CONFIG_REGULATOR_LTC3589) += ltc3589.o
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obj-$(CONFIG_REGULATOR_MAX14577) += max14577.o
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obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
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obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o
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@ -300,7 +300,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
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return 0;
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}
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static struct of_device_id of_anatop_regulator_match_tbl[] = {
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static const struct of_device_id of_anatop_regulator_match_tbl[] = {
|
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{ .compatible = "fsl,anatop-regulator", },
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{ /* end */ }
|
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};
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@ -3458,7 +3458,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
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/* register with sysfs */
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rdev->dev.class = ®ulator_class;
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rdev->dev.of_node = config->of_node;
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rdev->dev.of_node = of_node_get(config->of_node);
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rdev->dev.parent = dev;
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dev_set_name(&rdev->dev, "regulator.%d",
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atomic_inc_return(®ulator_no) - 1);
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@ -3600,6 +3600,7 @@ void regulator_unregister(struct regulator_dev *rdev)
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list_del(&rdev->list);
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kfree(rdev->constraints);
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regulator_ena_gpio_free(rdev);
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of_node_put(rdev->dev.of_node);
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device_unregister(&rdev->dev);
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mutex_unlock(®ulator_list_mutex);
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}
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|
|
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@ -50,7 +50,6 @@ of_get_fixed_voltage_config(struct device *dev)
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{
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struct fixed_voltage_config *config;
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struct device_node *np = dev->of_node;
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const __be32 *delay;
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struct regulator_init_data *init_data;
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config = devm_kzalloc(dev, sizeof(struct fixed_voltage_config),
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@ -91,15 +90,11 @@ of_get_fixed_voltage_config(struct device *dev)
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if ((config->gpio == -ENODEV) || (config->gpio == -EPROBE_DEFER))
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return ERR_PTR(-EPROBE_DEFER);
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delay = of_get_property(np, "startup-delay-us", NULL);
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if (delay)
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config->startup_delay = be32_to_cpu(*delay);
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of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
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if (of_find_property(np, "enable-active-high", NULL))
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config->enable_high = true;
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if (of_find_property(np, "gpio-open-drain", NULL))
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config->gpio_is_open_drain = true;
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config->enable_high = of_property_read_bool(np, "enable-active-high");
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config->gpio_is_open_drain = of_property_read_bool(np,
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"gpio-open-drain");
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if (of_find_property(np, "vin-supply", NULL))
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config->input_supply = "vin";
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@ -0,0 +1,554 @@
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/*
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* Linear Technology LTC3589,LTC3589-1 regulator support
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*
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* Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
|
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* as published by the Free Software Foundation.
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*
|
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* This program is distributed in the hope that it will be useful,
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#define DRIVER_NAME "ltc3589"
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#define LTC3589_IRQSTAT 0x02
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#define LTC3589_SCR1 0x07
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#define LTC3589_OVEN 0x10
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#define LTC3589_SCR2 0x12
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#define LTC3589_PGSTAT 0x13
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#define LTC3589_VCCR 0x20
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#define LTC3589_CLIRQ 0x21
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#define LTC3589_B1DTV1 0x23
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#define LTC3589_B1DTV2 0x24
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#define LTC3589_VRRCR 0x25
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#define LTC3589_B2DTV1 0x26
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#define LTC3589_B2DTV2 0x27
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#define LTC3589_B3DTV1 0x29
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#define LTC3589_B3DTV2 0x2a
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#define LTC3589_L2DTV1 0x32
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#define LTC3589_L2DTV2 0x33
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#define LTC3589_IRQSTAT_PGOOD_TIMEOUT BIT(3)
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#define LTC3589_IRQSTAT_UNDERVOLT_WARN BIT(4)
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#define LTC3589_IRQSTAT_UNDERVOLT_FAULT BIT(5)
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#define LTC3589_IRQSTAT_THERMAL_WARN BIT(6)
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#define LTC3589_IRQSTAT_THERMAL_FAULT BIT(7)
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#define LTC3589_OVEN_SW1 BIT(0)
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#define LTC3589_OVEN_SW2 BIT(1)
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#define LTC3589_OVEN_SW3 BIT(2)
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#define LTC3589_OVEN_BB_OUT BIT(3)
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#define LTC3589_OVEN_LDO2 BIT(4)
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#define LTC3589_OVEN_LDO3 BIT(5)
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#define LTC3589_OVEN_LDO4 BIT(6)
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#define LTC3589_OVEN_SW_CTRL BIT(7)
|
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|
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#define LTC3589_VCCR_SW1_GO BIT(0)
|
||||
#define LTC3589_VCCR_SW2_GO BIT(2)
|
||||
#define LTC3589_VCCR_SW3_GO BIT(4)
|
||||
#define LTC3589_VCCR_LDO2_GO BIT(6)
|
||||
|
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enum ltc3589_variant {
|
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LTC3589,
|
||||
LTC3589_1,
|
||||
LTC3589_2,
|
||||
};
|
||||
|
||||
enum ltc3589_reg {
|
||||
LTC3589_SW1,
|
||||
LTC3589_SW2,
|
||||
LTC3589_SW3,
|
||||
LTC3589_BB_OUT,
|
||||
LTC3589_LDO1,
|
||||
LTC3589_LDO2,
|
||||
LTC3589_LDO3,
|
||||
LTC3589_LDO4,
|
||||
LTC3589_NUM_REGULATORS,
|
||||
};
|
||||
|
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struct ltc3589_regulator {
|
||||
struct regulator_desc desc;
|
||||
|
||||
/* External feedback voltage divider */
|
||||
unsigned int r1;
|
||||
unsigned int r2;
|
||||
};
|
||||
|
||||
struct ltc3589 {
|
||||
struct regmap *regmap;
|
||||
struct device *dev;
|
||||
enum ltc3589_variant variant;
|
||||
struct ltc3589_regulator regulator_descs[LTC3589_NUM_REGULATORS];
|
||||
struct regulator_dev *regulators[LTC3589_NUM_REGULATORS];
|
||||
};
|
||||
|
||||
static const int ltc3589_ldo4[] = {
|
||||
2800000, 2500000, 1800000, 3300000,
|
||||
};
|
||||
|
||||
static const int ltc3589_12_ldo4[] = {
|
||||
1200000, 1800000, 2500000, 3200000,
|
||||
};
|
||||
|
||||
static int ltc3589_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
|
||||
{
|
||||
struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
|
||||
int sel, shift;
|
||||
|
||||
if (unlikely(ramp_delay <= 0))
|
||||
return -EINVAL;
|
||||
|
||||
/* VRRCR slew rate offsets are the same as VCCR go bit offsets */
|
||||
shift = ffs(rdev->desc->apply_bit) - 1;
|
||||
|
||||
/* The slew rate can be set to 0.88, 1.75, 3.5, or 7 mV/uS */
|
||||
for (sel = 0; sel < 4; sel++) {
|
||||
if ((880 << sel) >= ramp_delay) {
|
||||
return regmap_update_bits(ltc3589->regmap,
|
||||
LTC3589_VRRCR,
|
||||
0x3 << shift, sel << shift);
|
||||
}
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int ltc3589_set_suspend_voltage(struct regulator_dev *rdev, int uV)
|
||||
{
|
||||
struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
|
||||
int sel;
|
||||
|
||||
sel = regulator_map_voltage_linear(rdev, uV, uV);
|
||||
if (sel < 0)
|
||||
return sel;
|
||||
|
||||
/* DTV2 register follows right after the corresponding DTV1 register */
|
||||
return regmap_update_bits(ltc3589->regmap, rdev->desc->vsel_reg + 1,
|
||||
rdev->desc->vsel_mask, sel);
|
||||
}
|
||||
|
||||
static int ltc3589_set_suspend_mode(struct regulator_dev *rdev,
|
||||
unsigned int mode)
|
||||
{
|
||||
struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
|
||||
int mask, bit = 0;
|
||||
|
||||
/* VCCR reference selects are right next to the VCCR go bits */
|
||||
mask = rdev->desc->apply_bit << 1;
|
||||
|
||||
if (mode == REGULATOR_MODE_STANDBY)
|
||||
bit = mask; /* Select DTV2 */
|
||||
|
||||
mask |= rdev->desc->apply_bit;
|
||||
bit |= rdev->desc->apply_bit;
|
||||
return regmap_update_bits(ltc3589->regmap, LTC3589_VCCR, mask, bit);
|
||||
}
|
||||
|
||||
/* SW1, SW2, SW3, LDO2 */
|
||||
static struct regulator_ops ltc3589_linear_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.set_ramp_delay = ltc3589_set_ramp_delay,
|
||||
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
||||
.set_suspend_voltage = ltc3589_set_suspend_voltage,
|
||||
.set_suspend_mode = ltc3589_set_suspend_mode,
|
||||
};
|
||||
|
||||
/* BB_OUT, LDO3 */
|
||||
static struct regulator_ops ltc3589_fixed_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
};
|
||||
|
||||
/* LDO1 */
|
||||
static struct regulator_ops ltc3589_fixed_standby_regulator_ops = {
|
||||
};
|
||||
|
||||
/* LDO4 */
|
||||
static struct regulator_ops ltc3589_table_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_table,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
};
|
||||
|
||||
|
||||
#define LTC3589_REG(_name, _ops, en_bit, dtv1_reg, dtv_mask, go_bit) \
|
||||
[LTC3589_ ## _name] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.n_voltages = (dtv_mask) + 1, \
|
||||
.min_uV = (go_bit) ? 362500 : 0, \
|
||||
.uV_step = (go_bit) ? 12500 : 0, \
|
||||
.ramp_delay = (go_bit) ? 1750 : 0, \
|
||||
.fixed_uV = (dtv_mask) ? 0 : 800000, \
|
||||
.ops = <c3589_ ## _ops ## _regulator_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = LTC3589_ ## _name, \
|
||||
.owner = THIS_MODULE, \
|
||||
.vsel_reg = (dtv1_reg), \
|
||||
.vsel_mask = (dtv_mask), \
|
||||
.apply_reg = (go_bit) ? LTC3589_VCCR : 0, \
|
||||
.apply_bit = (go_bit), \
|
||||
.enable_reg = (en_bit) ? LTC3589_OVEN : 0, \
|
||||
.enable_mask = (en_bit), \
|
||||
}, \
|
||||
}
|
||||
|
||||
#define LTC3589_LINEAR_REG(_name, _dtv1) \
|
||||
LTC3589_REG(_name, linear, LTC3589_OVEN_ ## _name, \
|
||||
LTC3589_ ## _dtv1, 0x1f, \
|
||||
LTC3589_VCCR_ ## _name ## _GO)
|
||||
|
||||
#define LTC3589_FIXED_REG(_name) \
|
||||
LTC3589_REG(_name, fixed, LTC3589_OVEN_ ## _name, 0, 0, 0)
|
||||
|
||||
static struct ltc3589_regulator ltc3589_regulators[LTC3589_NUM_REGULATORS] = {
|
||||
LTC3589_LINEAR_REG(SW1, B1DTV1),
|
||||
LTC3589_LINEAR_REG(SW2, B2DTV1),
|
||||
LTC3589_LINEAR_REG(SW3, B3DTV1),
|
||||
LTC3589_FIXED_REG(BB_OUT),
|
||||
LTC3589_REG(LDO1, fixed_standby, 0, 0, 0, 0),
|
||||
LTC3589_LINEAR_REG(LDO2, L2DTV1),
|
||||
LTC3589_FIXED_REG(LDO3),
|
||||
LTC3589_REG(LDO4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, 0x60, 0),
|
||||
};
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct of_regulator_match ltc3589_matches[LTC3589_NUM_REGULATORS] = {
|
||||
{ .name = "sw1", },
|
||||
{ .name = "sw2", },
|
||||
{ .name = "sw3", },
|
||||
{ .name = "bb-out", },
|
||||
{ .name = "ldo1", }, /* standby */
|
||||
{ .name = "ldo2", },
|
||||
{ .name = "ldo3", },
|
||||
{ .name = "ldo4", },
|
||||
};
|
||||
|
||||
static int ltc3589_parse_regulators_dt(struct ltc3589 *ltc3589)
|
||||
{
|
||||
struct device *dev = ltc3589->dev;
|
||||
struct device_node *node;
|
||||
int i, ret;
|
||||
|
||||
node = of_find_node_by_name(dev->of_node, "regulators");
|
||||
if (!node) {
|
||||
dev_err(dev, "regulators node not found\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = of_regulator_match(dev, node, ltc3589_matches,
|
||||
ARRAY_SIZE(ltc3589_matches));
|
||||
of_node_put(node);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Error parsing regulator init data: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
if (ret != LTC3589_NUM_REGULATORS) {
|
||||
dev_err(dev, "Only %d regulators described in device tree\n",
|
||||
ret);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Parse feedback voltage dividers. LDO3 and LDO4 don't have them */
|
||||
for (i = 0; i < LTC3589_LDO3; i++) {
|
||||
struct ltc3589_regulator *desc = <c3589->regulator_descs[i];
|
||||
struct device_node *np = ltc3589_matches[i].of_node;
|
||||
u32 vdiv[2];
|
||||
|
||||
ret = of_property_read_u32_array(np, "lltc,fb-voltage-divider",
|
||||
vdiv, 2);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to parse voltage divider: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
desc->r1 = vdiv[0];
|
||||
desc->r2 = vdiv[1];
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline struct regulator_init_data *match_init_data(int index)
|
||||
{
|
||||
return ltc3589_matches[index].init_data;
|
||||
}
|
||||
|
||||
static inline struct device_node *match_of_node(int index)
|
||||
{
|
||||
return ltc3589_matches[index].of_node;
|
||||
}
|
||||
#else
|
||||
static inline int ltc3589_parse_regulators_dt(struct ltc3589 *ltc3589)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline struct regulator_init_data *match_init_data(int index)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline struct device_node *match_of_node(int index)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
static bool ltc3589_writeable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case LTC3589_IRQSTAT:
|
||||
case LTC3589_SCR1:
|
||||
case LTC3589_OVEN:
|
||||
case LTC3589_SCR2:
|
||||
case LTC3589_VCCR:
|
||||
case LTC3589_CLIRQ:
|
||||
case LTC3589_B1DTV1:
|
||||
case LTC3589_B1DTV2:
|
||||
case LTC3589_VRRCR:
|
||||
case LTC3589_B2DTV1:
|
||||
case LTC3589_B2DTV2:
|
||||
case LTC3589_B3DTV1:
|
||||
case LTC3589_B3DTV2:
|
||||
case LTC3589_L2DTV1:
|
||||
case LTC3589_L2DTV2:
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool ltc3589_readable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case LTC3589_IRQSTAT:
|
||||
case LTC3589_SCR1:
|
||||
case LTC3589_OVEN:
|
||||
case LTC3589_SCR2:
|
||||
case LTC3589_PGSTAT:
|
||||
case LTC3589_VCCR:
|
||||
case LTC3589_B1DTV1:
|
||||
case LTC3589_B1DTV2:
|
||||
case LTC3589_VRRCR:
|
||||
case LTC3589_B2DTV1:
|
||||
case LTC3589_B2DTV2:
|
||||
case LTC3589_B3DTV1:
|
||||
case LTC3589_B3DTV2:
|
||||
case LTC3589_L2DTV1:
|
||||
case LTC3589_L2DTV2:
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool ltc3589_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case LTC3589_IRQSTAT:
|
||||
case LTC3589_PGSTAT:
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
struct reg_default ltc3589_reg_defaults[] = {
|
||||
{ LTC3589_SCR1, 0x00 },
|
||||
{ LTC3589_OVEN, 0x00 },
|
||||
{ LTC3589_SCR2, 0x00 },
|
||||
{ LTC3589_VCCR, 0x00 },
|
||||
{ LTC3589_B1DTV1, 0x19 },
|
||||
{ LTC3589_B1DTV2, 0x19 },
|
||||
{ LTC3589_VRRCR, 0xff },
|
||||
{ LTC3589_B2DTV1, 0x19 },
|
||||
{ LTC3589_B2DTV2, 0x19 },
|
||||
{ LTC3589_B3DTV1, 0x19 },
|
||||
{ LTC3589_B3DTV2, 0x19 },
|
||||
{ LTC3589_L2DTV1, 0x19 },
|
||||
{ LTC3589_L2DTV2, 0x19 },
|
||||
};
|
||||
|
||||
static const struct regmap_config ltc3589_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.writeable_reg = ltc3589_writeable_reg,
|
||||
.readable_reg = ltc3589_readable_reg,
|
||||
.volatile_reg = ltc3589_volatile_reg,
|
||||
.max_register = LTC3589_L2DTV2,
|
||||
.reg_defaults = ltc3589_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(ltc3589_reg_defaults),
|
||||
.use_single_rw = true,
|
||||
.cache_type = REGCACHE_RBTREE,
|
||||
};
|
||||
|
||||
|
||||
static irqreturn_t ltc3589_isr(int irq, void *dev_id)
|
||||
{
|
||||
struct ltc3589 *ltc3589 = dev_id;
|
||||
unsigned int i, irqstat, event;
|
||||
|
||||
regmap_read(ltc3589->regmap, LTC3589_IRQSTAT, &irqstat);
|
||||
|
||||
if (irqstat & LTC3589_IRQSTAT_THERMAL_WARN) {
|
||||
event = REGULATOR_EVENT_OVER_TEMP;
|
||||
for (i = 0; i < LTC3589_NUM_REGULATORS; i++)
|
||||
regulator_notifier_call_chain(ltc3589->regulators[i],
|
||||
event, NULL);
|
||||
}
|
||||
|
||||
if (irqstat & LTC3589_IRQSTAT_UNDERVOLT_WARN) {
|
||||
event = REGULATOR_EVENT_UNDER_VOLTAGE;
|
||||
for (i = 0; i < LTC3589_NUM_REGULATORS; i++)
|
||||
regulator_notifier_call_chain(ltc3589->regulators[i],
|
||||
event, NULL);
|
||||
}
|
||||
|
||||
/* Clear warning condition */
|
||||
regmap_write(ltc3589->regmap, LTC3589_CLIRQ, 0);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static inline unsigned int ltc3589_scale(unsigned int uV, u32 r1, u32 r2)
|
||||
{
|
||||
uint64_t tmp;
|
||||
if (uV == 0)
|
||||
return 0;
|
||||
tmp = (uint64_t)uV * r1;
|
||||
do_div(tmp, r2);
|
||||
return uV + (unsigned int)tmp;
|
||||
}
|
||||
|
||||
static void ltc3589_apply_fb_voltage_divider(struct ltc3589_regulator *rdesc)
|
||||
{
|
||||
struct regulator_desc *desc = &rdesc->desc;
|
||||
|
||||
if (!rdesc->r1 || !rdesc->r2)
|
||||
return;
|
||||
|
||||
desc->min_uV = ltc3589_scale(desc->min_uV, rdesc->r1, rdesc->r2);
|
||||
desc->uV_step = ltc3589_scale(desc->uV_step, rdesc->r1, rdesc->r2);
|
||||
desc->fixed_uV = ltc3589_scale(desc->fixed_uV, rdesc->r1, rdesc->r2);
|
||||
}
|
||||
|
||||
static int ltc3589_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
struct ltc3589_regulator *descs;
|
||||
struct ltc3589 *ltc3589;
|
||||
int i, ret;
|
||||
|
||||
ltc3589 = devm_kzalloc(dev, sizeof(*ltc3589), GFP_KERNEL);
|
||||
if (!ltc3589)
|
||||
return -ENOMEM;
|
||||
|
||||
i2c_set_clientdata(client, ltc3589);
|
||||
ltc3589->variant = id->driver_data;
|
||||
ltc3589->dev = dev;
|
||||
|
||||
descs = ltc3589->regulator_descs;
|
||||
memcpy(descs, ltc3589_regulators, sizeof(ltc3589_regulators));
|
||||
if (ltc3589->variant == LTC3589) {
|
||||
descs[LTC3589_LDO3].desc.fixed_uV = 1800000;
|
||||
descs[LTC3589_LDO4].desc.volt_table = ltc3589_ldo4;
|
||||
} else {
|
||||
descs[LTC3589_LDO3].desc.fixed_uV = 2800000;
|
||||
descs[LTC3589_LDO4].desc.volt_table = ltc3589_12_ldo4;
|
||||
}
|
||||
|
||||
ltc3589->regmap = devm_regmap_init_i2c(client, <c3589_regmap_config);
|
||||
if (IS_ERR(ltc3589->regmap)) {
|
||||
ret = PTR_ERR(ltc3589->regmap);
|
||||
dev_err(dev, "failed to initialize regmap: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = ltc3589_parse_regulators_dt(ltc3589);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
for (i = 0; i < LTC3589_NUM_REGULATORS; i++) {
|
||||
struct ltc3589_regulator *rdesc = <c3589->regulator_descs[i];
|
||||
struct regulator_desc *desc = &rdesc->desc;
|
||||
struct regulator_init_data *init_data;
|
||||
struct regulator_config config = { };
|
||||
|
||||
init_data = match_init_data(i);
|
||||
|
||||
if (i < LTC3589_LDO3)
|
||||
ltc3589_apply_fb_voltage_divider(rdesc);
|
||||
|
||||
config.dev = dev;
|
||||
config.init_data = init_data;
|
||||
config.driver_data = ltc3589;
|
||||
config.of_node = match_of_node(i);
|
||||
|
||||
ltc3589->regulators[i] = devm_regulator_register(dev, desc,
|
||||
&config);
|
||||
if (IS_ERR(ltc3589->regulators[i])) {
|
||||
ret = PTR_ERR(ltc3589->regulators[i]);
|
||||
dev_err(dev, "failed to register regulator %s: %d\n",
|
||||
desc->name, ret);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
ret = devm_request_threaded_irq(dev, client->irq, NULL, ltc3589_isr,
|
||||
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
||||
client->name, ltc3589);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to request IRQ: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct i2c_device_id ltc3589_i2c_id[] = {
|
||||
{ "ltc3589", LTC3589 },
|
||||
{ "ltc3589-1", LTC3589_1 },
|
||||
{ "ltc3589-2", LTC3589_2 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, ltc3589_i2c_id);
|
||||
|
||||
static struct i2c_driver ltc3589_driver = {
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ltc3589_probe,
|
||||
.id_table = ltc3589_i2c_id,
|
||||
};
|
||||
module_i2c_driver(ltc3589_driver);
|
||||
|
||||
MODULE_AUTHOR("Philipp Zabel <p.zabel@pengutronix.de>");
|
||||
MODULE_DESCRIPTION("Regulator driver for Linear Technology LTC3589(-1,2)");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_ALIAS("i2c:ltc3589");
|
||||
|
|
@ -161,10 +161,8 @@ static int max8649_regulator_probe(struct i2c_client *client,
|
|||
|
||||
info = devm_kzalloc(&client->dev, sizeof(struct max8649_regulator_info),
|
||||
GFP_KERNEL);
|
||||
if (!info) {
|
||||
dev_err(&client->dev, "No enough memory\n");
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
info->regmap = devm_regmap_init_i2c(client, &max8649_regmap_config);
|
||||
if (IS_ERR(info->regmap)) {
|
||||
|
|
|
|||
|
|
@ -129,7 +129,7 @@ static const struct regulator_desc regulator = {
|
|||
};
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct of_device_id max8952_dt_match[] = {
|
||||
static const struct of_device_id max8952_dt_match[] = {
|
||||
{ .compatible = "maxim,max8952" },
|
||||
{},
|
||||
};
|
||||
|
|
|
|||
|
|
@ -19,9 +19,7 @@
|
|||
static void of_get_regulation_constraints(struct device_node *np,
|
||||
struct regulator_init_data **init_data)
|
||||
{
|
||||
const __be32 *min_uV, *max_uV, *uV_offset;
|
||||
const __be32 *min_uA, *max_uA, *ramp_delay;
|
||||
struct property *prop;
|
||||
const __be32 *min_uV, *max_uV;
|
||||
struct regulation_constraints *constraints = &(*init_data)->constraints;
|
||||
int ret;
|
||||
u32 pval;
|
||||
|
|
@ -42,36 +40,29 @@ static void of_get_regulation_constraints(struct device_node *np,
|
|||
if (min_uV && max_uV && constraints->min_uV == constraints->max_uV)
|
||||
constraints->apply_uV = true;
|
||||
|
||||
uV_offset = of_get_property(np, "regulator-microvolt-offset", NULL);
|
||||
if (uV_offset)
|
||||
constraints->uV_offset = be32_to_cpu(*uV_offset);
|
||||
min_uA = of_get_property(np, "regulator-min-microamp", NULL);
|
||||
if (min_uA)
|
||||
constraints->min_uA = be32_to_cpu(*min_uA);
|
||||
max_uA = of_get_property(np, "regulator-max-microamp", NULL);
|
||||
if (max_uA)
|
||||
constraints->max_uA = be32_to_cpu(*max_uA);
|
||||
if (!of_property_read_u32(np, "regulator-microvolt-offset", &pval))
|
||||
constraints->uV_offset = pval;
|
||||
if (!of_property_read_u32(np, "regulator-min-microamp", &pval))
|
||||
constraints->min_uA = pval;
|
||||
if (!of_property_read_u32(np, "regulator-max-microamp", &pval))
|
||||
constraints->max_uA = pval;
|
||||
|
||||
/* Current change possible? */
|
||||
if (constraints->min_uA != constraints->max_uA)
|
||||
constraints->valid_ops_mask |= REGULATOR_CHANGE_CURRENT;
|
||||
|
||||
if (of_find_property(np, "regulator-boot-on", NULL))
|
||||
constraints->boot_on = true;
|
||||
|
||||
if (of_find_property(np, "regulator-always-on", NULL))
|
||||
constraints->always_on = true;
|
||||
else /* status change should be possible if not always on. */
|
||||
constraints->boot_on = of_property_read_bool(np, "regulator-boot-on");
|
||||
constraints->always_on = of_property_read_bool(np, "regulator-always-on");
|
||||
if (!constraints->always_on) /* status change should be possible. */
|
||||
constraints->valid_ops_mask |= REGULATOR_CHANGE_STATUS;
|
||||
|
||||
if (of_property_read_bool(np, "regulator-allow-bypass"))
|
||||
constraints->valid_ops_mask |= REGULATOR_CHANGE_BYPASS;
|
||||
|
||||
prop = of_find_property(np, "regulator-ramp-delay", NULL);
|
||||
if (prop && prop->value) {
|
||||
ramp_delay = prop->value;
|
||||
if (*ramp_delay)
|
||||
constraints->ramp_delay = be32_to_cpu(*ramp_delay);
|
||||
ret = of_property_read_u32(np, "regulator-ramp-delay", &pval);
|
||||
if (!ret) {
|
||||
if (pval)
|
||||
constraints->ramp_delay = pval;
|
||||
else
|
||||
constraints->ramp_disable = true;
|
||||
}
|
||||
|
|
@ -106,6 +97,20 @@ struct regulator_init_data *of_get_regulator_init_data(struct device *dev,
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
|
||||
|
||||
struct devm_of_regulator_matches {
|
||||
struct of_regulator_match *matches;
|
||||
unsigned int num_matches;
|
||||
};
|
||||
|
||||
static void devm_of_regulator_put_matches(struct device *dev, void *res)
|
||||
{
|
||||
struct devm_of_regulator_matches *devm_matches = res;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < devm_matches->num_matches; i++)
|
||||
of_node_put(devm_matches->matches[i].of_node);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_regulator_match - extract multiple regulator init data from device tree.
|
||||
* @dev: device requesting the data
|
||||
|
|
@ -119,7 +124,8 @@ EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
|
|||
* regulator. The data parsed from a child node will be matched to a regulator
|
||||
* based on either the deprecated property regulator-compatible if present,
|
||||
* or otherwise the child node's name. Note that the match table is modified
|
||||
* in place.
|
||||
* in place and an additional of_node reference is taken for each matched
|
||||
* regulator.
|
||||
*
|
||||
* Returns the number of matches found or a negative error code on failure.
|
||||
*/
|
||||
|
|
@ -131,10 +137,22 @@ int of_regulator_match(struct device *dev, struct device_node *node,
|
|||
unsigned int i;
|
||||
const char *name;
|
||||
struct device_node *child;
|
||||
struct devm_of_regulator_matches *devm_matches;
|
||||
|
||||
if (!dev || !node)
|
||||
return -EINVAL;
|
||||
|
||||
devm_matches = devres_alloc(devm_of_regulator_put_matches,
|
||||
sizeof(struct devm_of_regulator_matches),
|
||||
GFP_KERNEL);
|
||||
if (!devm_matches)
|
||||
return -ENOMEM;
|
||||
|
||||
devm_matches->matches = matches;
|
||||
devm_matches->num_matches = num_matches;
|
||||
|
||||
devres_add(dev, devm_matches);
|
||||
|
||||
for (i = 0; i < num_matches; i++) {
|
||||
struct of_regulator_match *match = &matches[i];
|
||||
match->init_data = NULL;
|
||||
|
|
@ -162,7 +180,7 @@ int of_regulator_match(struct device *dev, struct device_node *node,
|
|||
child->name);
|
||||
return -EINVAL;
|
||||
}
|
||||
match->of_node = child;
|
||||
match->of_node = of_node_get(child);
|
||||
count++;
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1199,7 +1199,7 @@ static int palmas_regulators_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct of_device_id of_palmas_match_tbl[] = {
|
||||
static const struct of_device_id of_palmas_match_tbl[] = {
|
||||
{ .compatible = "ti,palmas-pmic", },
|
||||
{ .compatible = "ti,twl6035-pmic", },
|
||||
{ .compatible = "ti,twl6036-pmic", },
|
||||
|
|
|
|||
|
|
@ -118,7 +118,7 @@ static const struct st_pwm_regulator_pdata b2105_info = {
|
|||
.duty_cycle_table = b2105_duty_cycle_table,
|
||||
};
|
||||
|
||||
static struct of_device_id st_pwm_of_match[] = {
|
||||
static const struct of_device_id st_pwm_of_match[] = {
|
||||
{ .compatible = "st,b2105-pwm-regulator", .data = &b2105_info, },
|
||||
{ },
|
||||
};
|
||||
|
|
|
|||
|
|
@ -123,7 +123,7 @@ static int vexpress_regulator_remove(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct of_device_id vexpress_regulator_of_match[] = {
|
||||
static const struct of_device_id vexpress_regulator_of_match[] = {
|
||||
{ .compatible = "arm,vexpress-volt", },
|
||||
{ }
|
||||
};
|
||||
|
|
|
|||
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