regulator: twl4030 regulators
Support most of the LDO regulators in the twl4030 family chips. In the case of LDOs supporting MMC/SD, the voltage controls are used; but in most other cases, the regulator framework is only used to enable/disable a supplies, conserving power when a given voltage rail is not needed. The drivers/mfd/twl4030-core.c code already sets up the various regulators according to board-specific configuration, and knows that some chips don't provide the full set of voltage rails. The omitted regulators are intended to be under hardware control, such as during the hardware-mediated system powerup, powerdown, and suspend states. Unless/until software hooks are known to be safe, they won't be exported here. These regulators implement the new get_status() operation, but can't realistically implement get_mode(); the status output is effectively the result of a vote, with the relevant hardware inputs not exposed. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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		|  | @ -56,6 +56,13 @@ config REGULATOR_BQ24022 | ||||||
| 	  charging select between 100 mA and 500 mA charging current | 	  charging select between 100 mA and 500 mA charging current | ||||||
| 	  limit. | 	  limit. | ||||||
| 
 | 
 | ||||||
|  | config REGULATOR_TWL4030 | ||||||
|  | 	bool "TI TWL4030/TWL5030/TPS695x0 PMIC" | ||||||
|  | 	depends on TWL4030_CORE | ||||||
|  | 	help | ||||||
|  | 	  This driver supports the voltage regulators provided by | ||||||
|  | 	  this family of companion chips. | ||||||
|  | 
 | ||||||
| config REGULATOR_WM8350 | config REGULATOR_WM8350 | ||||||
| 	tristate "Wolfson Microelectroncis WM8350 AudioPlus PMIC" | 	tristate "Wolfson Microelectroncis WM8350 AudioPlus PMIC" | ||||||
| 	depends on MFD_WM8350 | 	depends on MFD_WM8350 | ||||||
|  |  | ||||||
|  | @ -8,6 +8,7 @@ obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o | ||||||
| obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o | obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o | ||||||
| 
 | 
 | ||||||
| obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o | obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o | ||||||
|  | obj-$(CONFIG_REGULATOR_TWL4030) += twl4030-regulator.o | ||||||
| obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o | obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o | ||||||
| obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o | obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o | ||||||
| obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o | obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o | ||||||
|  |  | ||||||
							
								
								
									
										511
									
								
								drivers/regulator/twl4030-regulator.c
									
										
									
									
									
										Normal file
									
								
							
							
						
						
									
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								drivers/regulator/twl4030-regulator.c
									
										
									
									
									
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							|  | @ -0,0 +1,511 @@ | ||||||
|  | /*
 | ||||||
|  |  * twl4030-regulator.c -- support regulators in twl4030 family chips | ||||||
|  |  * | ||||||
|  |  * Copyright (C) 2008 David Brownell | ||||||
|  |  * | ||||||
|  |  * This program is free software; you can redistribute it and/or modify | ||||||
|  |  * it under the terms of the GNU General Public License as published by | ||||||
|  |  * the Free Software Foundation; either version 2 of the License, or | ||||||
|  |  * (at your option) any later version. | ||||||
|  |  */ | ||||||
|  | 
 | ||||||
|  | #include <linux/module.h> | ||||||
|  | #include <linux/init.h> | ||||||
|  | #include <linux/err.h> | ||||||
|  | #include <linux/platform_device.h> | ||||||
|  | #include <linux/regulator/driver.h> | ||||||
|  | #include <linux/regulator/machine.h> | ||||||
|  | #include <linux/i2c/twl4030.h> | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * The TWL4030/TW5030/TPS659x0 family chips include power management, a | ||||||
|  |  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions | ||||||
|  |  * include an audio codec, battery charger, and more voltage regulators. | ||||||
|  |  * These chips are often used in OMAP-based systems. | ||||||
|  |  * | ||||||
|  |  * This driver implements software-based resource control for various | ||||||
|  |  * voltage regulators.  This is usually augmented with state machine | ||||||
|  |  * based control. | ||||||
|  |  */ | ||||||
|  | 
 | ||||||
|  | struct twlreg_info { | ||||||
|  | 	/* start of regulator's PM_RECEIVER control register bank */ | ||||||
|  | 	u8			base; | ||||||
|  | 
 | ||||||
|  | 	/* twl4030 resource ID, for resource control state machine */ | ||||||
|  | 	u8			id; | ||||||
|  | 
 | ||||||
|  | 	/* voltage in mV = table[VSEL]; table_len must be a power-of-two */ | ||||||
|  | 	u8			table_len; | ||||||
|  | 	const u16		*table; | ||||||
|  | 
 | ||||||
|  | 	/* chip constraints on regulator behavior */ | ||||||
|  | 	u16			min_mV; | ||||||
|  | 	u16			max_mV; | ||||||
|  | 
 | ||||||
|  | 	/* used by regulator core */ | ||||||
|  | 	struct regulator_desc	desc; | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
|  | /* LDO control registers ... offset is from the base of its register bank.
 | ||||||
|  |  * The first three registers of all power resource banks help hardware to | ||||||
|  |  * manage the various resource groups. | ||||||
|  |  */ | ||||||
|  | #define VREG_GRP		0 | ||||||
|  | #define VREG_TYPE		1 | ||||||
|  | #define VREG_REMAP		2 | ||||||
|  | #define VREG_DEDICATED		3	/* LDO control */ | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
|  | static inline int | ||||||
|  | twl4030reg_read(struct twlreg_info *info, unsigned offset) | ||||||
|  | { | ||||||
|  | 	u8 value; | ||||||
|  | 	int status; | ||||||
|  | 
 | ||||||
|  | 	status = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, | ||||||
|  | 			&value, info->base + offset); | ||||||
|  | 	return (status < 0) ? status : value; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static inline int | ||||||
|  | twl4030reg_write(struct twlreg_info *info, unsigned offset, u8 value) | ||||||
|  | { | ||||||
|  | 	return twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, | ||||||
|  | 			value, info->base + offset); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /*----------------------------------------------------------------------*/ | ||||||
|  | 
 | ||||||
|  | /* generic power resource operations, which work on all regulators */ | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_grp(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	return twl4030reg_read(rdev_get_drvdata(rdev), VREG_GRP); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * Enable/disable regulators by joining/leaving the P1 (processor) group. | ||||||
|  |  * We assume nobody else is updating the DEV_GRP registers. | ||||||
|  |  */ | ||||||
|  | 
 | ||||||
|  | #define P3_GRP		BIT(7)		/* "peripherals" */ | ||||||
|  | #define P2_GRP		BIT(6)		/* secondary processor, modem, etc */ | ||||||
|  | #define P1_GRP		BIT(5)		/* CPU/Linux */ | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_is_enabled(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	int	state = twl4030reg_grp(rdev); | ||||||
|  | 
 | ||||||
|  | 	if (state < 0) | ||||||
|  | 		return state; | ||||||
|  | 
 | ||||||
|  | 	return (state & P1_GRP) != 0; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_enable(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 	int			grp; | ||||||
|  | 
 | ||||||
|  | 	grp = twl4030reg_read(info, VREG_GRP); | ||||||
|  | 	if (grp < 0) | ||||||
|  | 		return grp; | ||||||
|  | 
 | ||||||
|  | 	grp |= P1_GRP; | ||||||
|  | 	return twl4030reg_write(info, VREG_GRP, grp); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_disable(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 	int			grp; | ||||||
|  | 
 | ||||||
|  | 	grp = twl4030reg_read(info, VREG_GRP); | ||||||
|  | 	if (grp < 0) | ||||||
|  | 		return grp; | ||||||
|  | 
 | ||||||
|  | 	grp &= ~P1_GRP; | ||||||
|  | 	return twl4030reg_write(info, VREG_GRP, grp); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_get_status(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	int	state = twl4030reg_grp(rdev); | ||||||
|  | 
 | ||||||
|  | 	if (state < 0) | ||||||
|  | 		return state; | ||||||
|  | 	state &= 0x0f; | ||||||
|  | 
 | ||||||
|  | 	/* assume state != WARM_RESET; we'd not be running...  */ | ||||||
|  | 	if (!state) | ||||||
|  | 		return REGULATOR_STATUS_OFF; | ||||||
|  | 	return (state & BIT(3)) | ||||||
|  | 		? REGULATOR_STATUS_NORMAL | ||||||
|  | 		: REGULATOR_STATUS_STANDBY; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 	unsigned		message; | ||||||
|  | 	int			status; | ||||||
|  | 
 | ||||||
|  | 	/* We can only set the mode through state machine commands... */ | ||||||
|  | 	switch (mode) { | ||||||
|  | 	case REGULATOR_MODE_NORMAL: | ||||||
|  | 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE); | ||||||
|  | 		break; | ||||||
|  | 	case REGULATOR_MODE_STANDBY: | ||||||
|  | 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP); | ||||||
|  | 		break; | ||||||
|  | 	default: | ||||||
|  | 		return -EINVAL; | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	/* Ensure the resource is associated with some group */ | ||||||
|  | 	status = twl4030reg_grp(rdev); | ||||||
|  | 	if (status < 0) | ||||||
|  | 		return status; | ||||||
|  | 	if (!(status & (P3_GRP | P2_GRP | P1_GRP))) | ||||||
|  | 		return -EACCES; | ||||||
|  | 
 | ||||||
|  | 	status = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, | ||||||
|  | 			message >> 8, 0x15 /* PB_WORD_MSB */ ); | ||||||
|  | 	if (status >= 0) | ||||||
|  | 		return status; | ||||||
|  | 
 | ||||||
|  | 	return twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, | ||||||
|  | 			message, 0x16 /* PB_WORD_LSB */ ); | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | /*----------------------------------------------------------------------*/ | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage | ||||||
|  |  * select field in its control register.   We use tables indexed by VSEL | ||||||
|  |  * to record voltages in milliVolts.  (Accuracy is about three percent.) | ||||||
|  |  * | ||||||
|  |  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon; | ||||||
|  |  * currently handled by listing two slightly different VAUX2 regulators, | ||||||
|  |  * only one of which will be configured. | ||||||
|  |  * | ||||||
|  |  * VSEL values documented as "TI cannot support these values" are flagged | ||||||
|  |  * in these tables as UNSUP() values; we normally won't assign them. | ||||||
|  |  */ | ||||||
|  | #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED | ||||||
|  | #define UNSUP_MASK	0x0000 | ||||||
|  | #else | ||||||
|  | #define UNSUP_MASK	0x8000 | ||||||
|  | #endif | ||||||
|  | 
 | ||||||
|  | #define UNSUP(x)	(UNSUP_MASK | (x)) | ||||||
|  | #define IS_UNSUP(x)	(UNSUP_MASK & (x)) | ||||||
|  | #define LDO_MV(x)	(~UNSUP_MASK & (x)) | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
|  | static const u16 VAUX1_VSEL_table[] = { | ||||||
|  | 	UNSUP(1500), UNSUP(1800), 2500, 2800, | ||||||
|  | 	3000, 3000, 3000, 3000, | ||||||
|  | }; | ||||||
|  | static const u16 VAUX2_4030_VSEL_table[] = { | ||||||
|  | 	UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300, | ||||||
|  | 	1500, 1800, UNSUP(1850), 2500, | ||||||
|  | 	UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), | ||||||
|  | 	UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), | ||||||
|  | }; | ||||||
|  | static const u16 VAUX2_VSEL_table[] = { | ||||||
|  | 	1700, 1700, 1900, 1300, | ||||||
|  | 	1500, 1800, 2000, 2500, | ||||||
|  | 	2100, 2800, 2200, 2300, | ||||||
|  | 	2400, 2400, 2400, 2400, | ||||||
|  | }; | ||||||
|  | static const u16 VAUX3_VSEL_table[] = { | ||||||
|  | 	1500, 1800, 2500, 2800, | ||||||
|  | 	UNSUP(3000), UNSUP(3000), UNSUP(3000), UNSUP(3000), | ||||||
|  | }; | ||||||
|  | static const u16 VAUX4_VSEL_table[] = { | ||||||
|  | 	700, 1000, 1200, UNSUP(1300), | ||||||
|  | 	1500, 1800, UNSUP(1850), 2500, | ||||||
|  | }; | ||||||
|  | static const u16 VMMC1_VSEL_table[] = { | ||||||
|  | 	1850, 2850, 3000, 3150, | ||||||
|  | }; | ||||||
|  | static const u16 VMMC2_VSEL_table[] = { | ||||||
|  | 	UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300), | ||||||
|  | 	UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500), | ||||||
|  | 	2600, 2800, 2850, 3000, | ||||||
|  | 	3150, 3150, 3150, 3150, | ||||||
|  | }; | ||||||
|  | static const u16 VPLL1_VSEL_table[] = { | ||||||
|  | 	1000, 1200, 1300, 1800, | ||||||
|  | 	UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000), | ||||||
|  | }; | ||||||
|  | static const u16 VPLL2_VSEL_table[] = { | ||||||
|  | 	700, 1000, 1200, 1300, | ||||||
|  | 	UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500), | ||||||
|  | 	UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000), | ||||||
|  | 	UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), | ||||||
|  | }; | ||||||
|  | static const u16 VSIM_VSEL_table[] = { | ||||||
|  | 	UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800, | ||||||
|  | 	2800, 3000, 3000, 3000, | ||||||
|  | }; | ||||||
|  | static const u16 VDAC_VSEL_table[] = { | ||||||
|  | 	1200, 1300, 1800, 1800, | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
|  | static int | ||||||
|  | twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 	int			vsel; | ||||||
|  | 
 | ||||||
|  | 	for (vsel = 0; vsel < info->table_len; vsel++) { | ||||||
|  | 		int mV = info->table[vsel]; | ||||||
|  | 		int uV; | ||||||
|  | 
 | ||||||
|  | 		if (IS_UNSUP(mV)) | ||||||
|  | 			continue; | ||||||
|  | 		uV = LDO_MV(mV) * 1000; | ||||||
|  | 
 | ||||||
|  | 		/* use the first in-range value */ | ||||||
|  | 		if (min_uV <= uV && uV <= max_uV) | ||||||
|  | 			return twl4030reg_write(info, VREG_DEDICATED, vsel); | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	return -EDOM; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int twl4030ldo_get_voltage(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 	int			vsel = twl4030reg_read(info, VREG_DEDICATED); | ||||||
|  | 
 | ||||||
|  | 	if (vsel < 0) | ||||||
|  | 		return vsel; | ||||||
|  | 
 | ||||||
|  | 	vsel &= info->table_len - 1; | ||||||
|  | 	return LDO_MV(info->table[vsel]) * 1000; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static struct regulator_ops twl4030ldo_ops = { | ||||||
|  | 	.set_voltage	= twl4030ldo_set_voltage, | ||||||
|  | 	.get_voltage	= twl4030ldo_get_voltage, | ||||||
|  | 
 | ||||||
|  | 	.enable		= twl4030reg_enable, | ||||||
|  | 	.disable	= twl4030reg_disable, | ||||||
|  | 	.is_enabled	= twl4030reg_is_enabled, | ||||||
|  | 
 | ||||||
|  | 	.set_mode	= twl4030reg_set_mode, | ||||||
|  | 
 | ||||||
|  | 	.get_status	= twl4030reg_get_status, | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | /*----------------------------------------------------------------------*/ | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * Fixed voltage LDOs don't have a VSEL field to update. | ||||||
|  |  */ | ||||||
|  | static int twl4030fixed_get_voltage(struct regulator_dev *rdev) | ||||||
|  | { | ||||||
|  | 	struct twlreg_info	*info = rdev_get_drvdata(rdev); | ||||||
|  | 
 | ||||||
|  | 	return info->min_mV * 1000; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static struct regulator_ops twl4030fixed_ops = { | ||||||
|  | 	.get_voltage	= twl4030fixed_get_voltage, | ||||||
|  | 
 | ||||||
|  | 	.enable		= twl4030reg_enable, | ||||||
|  | 	.disable	= twl4030reg_disable, | ||||||
|  | 	.is_enabled	= twl4030reg_is_enabled, | ||||||
|  | 
 | ||||||
|  | 	.set_mode	= twl4030reg_set_mode, | ||||||
|  | 
 | ||||||
|  | 	.get_status	= twl4030reg_get_status, | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | /*----------------------------------------------------------------------*/ | ||||||
|  | 
 | ||||||
|  | #define TWL_ADJUSTABLE_LDO(label, offset, num) { \ | ||||||
|  | 	.base = offset, \ | ||||||
|  | 	.id = num, \ | ||||||
|  | 	.table_len = ARRAY_SIZE(label##_VSEL_table), \ | ||||||
|  | 	.table = label##_VSEL_table, \ | ||||||
|  | 	.desc = { \ | ||||||
|  | 		.name = #label, \ | ||||||
|  | 		.id = TWL4030_REG_##label, \ | ||||||
|  | 		.ops = &twl4030ldo_ops, \ | ||||||
|  | 		.type = REGULATOR_VOLTAGE, \ | ||||||
|  | 		.owner = THIS_MODULE, \ | ||||||
|  | 		}, \ | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | #define TWL_FIXED_LDO(label, offset, mVolts, num) { \ | ||||||
|  | 	.base = offset, \ | ||||||
|  | 	.id = num, \ | ||||||
|  | 	.min_mV = mVolts, \ | ||||||
|  | 	.max_mV = mVolts, \ | ||||||
|  | 	.desc = { \ | ||||||
|  | 		.name = #label, \ | ||||||
|  | 		.id = TWL4030_REG_##label, \ | ||||||
|  | 		.ops = &twl4030fixed_ops, \ | ||||||
|  | 		.type = REGULATOR_VOLTAGE, \ | ||||||
|  | 		.owner = THIS_MODULE, \ | ||||||
|  | 		}, \ | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * We list regulators here if systems need some level of | ||||||
|  |  * software control over them after boot. | ||||||
|  |  */ | ||||||
|  | static struct twlreg_info twl4030_regs[] = { | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VAUX1, 0x17, 1), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VAUX2, 0x1b, 2), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VAUX3, 0x1f, 3), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VAUX4, 0x23, 4), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VMMC1, 0x27, 5), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VMMC2, 0x2b, 6), | ||||||
|  | 	/*
 | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VPLL1, 0x2f, 7), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VPLL2, 0x33, 8), | ||||||
|  | 	*/ | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VSIM, 0x37, 9), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VDAC, 0x3b, 10), | ||||||
|  | 	/*
 | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VINTANA1, 0x3f, 11), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VINTANA2, 0x43, 12), | ||||||
|  | 	TWL_ADJUSTABLE_LDO(VINTDIG, 0x47, 13), | ||||||
|  | 	TWL_SMPS(VIO, 0x4b, 14), | ||||||
|  | 	TWL_SMPS(VDD1, 0x55, 15), | ||||||
|  | 	TWL_SMPS(VDD2, 0x63, 16), | ||||||
|  | 	 */ | ||||||
|  | 	TWL_FIXED_LDO(VUSB1V5, 0x71, 1500, 17), | ||||||
|  | 	TWL_FIXED_LDO(VUSB1V8, 0x74, 1800, 18), | ||||||
|  | 	TWL_FIXED_LDO(VUSB3V1, 0x77, 3100, 19), | ||||||
|  | 	/* VUSBCP is managed *only* by the USB subchip */ | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | static int twl4030reg_probe(struct platform_device *pdev) | ||||||
|  | { | ||||||
|  | 	int				i; | ||||||
|  | 	struct twlreg_info		*info; | ||||||
|  | 	struct regulator_init_data	*initdata; | ||||||
|  | 	struct regulation_constraints	*c; | ||||||
|  | 	struct regulator_dev		*rdev; | ||||||
|  | 	int				min_uV, max_uV; | ||||||
|  | 
 | ||||||
|  | 	for (i = 0, info = NULL; i < ARRAY_SIZE(twl4030_regs); i++) { | ||||||
|  | 		if (twl4030_regs[i].desc.id != pdev->id) | ||||||
|  | 			continue; | ||||||
|  | 		info = twl4030_regs + i; | ||||||
|  | 		min_uV = info->min_mV * 1000; | ||||||
|  | 		max_uV = info->max_mV * 1000; | ||||||
|  | 		break; | ||||||
|  | 	} | ||||||
|  | 	if (!info) | ||||||
|  | 		return -ENODEV; | ||||||
|  | 
 | ||||||
|  | 	initdata = pdev->dev.platform_data; | ||||||
|  | 	if (!initdata) | ||||||
|  | 		return -EINVAL; | ||||||
|  | 
 | ||||||
|  | 	/* Constrain board-specific capabilities according to what
 | ||||||
|  | 	 * this driver and the chip itself can actually do. | ||||||
|  | 	 */ | ||||||
|  | 	c = &initdata->constraints; | ||||||
|  | 	if (!c->min_uV || c->min_uV < min_uV) | ||||||
|  | 		c->min_uV = min_uV; | ||||||
|  | 	if (!c->max_uV || c->max_uV > max_uV) | ||||||
|  | 		c->max_uV = max_uV; | ||||||
|  | 	c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; | ||||||
|  | 	c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE | ||||||
|  | 				| REGULATOR_CHANGE_MODE | ||||||
|  | 				| REGULATOR_CHANGE_STATUS; | ||||||
|  | 
 | ||||||
|  | 	rdev = regulator_register(&info->desc, &pdev->dev, initdata, info); | ||||||
|  | 	if (IS_ERR(rdev)) { | ||||||
|  | 		dev_err(&pdev->dev, "can't register %s, %ld\n", | ||||||
|  | 				info->desc.name, PTR_ERR(rdev)); | ||||||
|  | 		return PTR_ERR(rdev); | ||||||
|  | 	} | ||||||
|  | 	platform_set_drvdata(pdev, rdev); | ||||||
|  | 
 | ||||||
|  | 	/* NOTE:  many regulators support short-circuit IRQs (presentable
 | ||||||
|  | 	 * as REGULATOR_OVER_CURRENT notifications?) configured via: | ||||||
|  | 	 *  - SC_CONFIG | ||||||
|  | 	 *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) | ||||||
|  | 	 *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) | ||||||
|  | 	 *  - IT_CONFIG | ||||||
|  | 	 */ | ||||||
|  | 
 | ||||||
|  | 	return 0; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | static int __devexit twl4030reg_remove(struct platform_device *pdev) | ||||||
|  | { | ||||||
|  | 	regulator_unregister(platform_get_drvdata(pdev)); | ||||||
|  | 	return 0; | ||||||
|  | } | ||||||
|  | 
 | ||||||
|  | MODULE_ALIAS("platform:twl4030_reg"); | ||||||
|  | 
 | ||||||
|  | static struct platform_driver twl4030reg_driver = { | ||||||
|  | 	.probe		= twl4030reg_probe, | ||||||
|  | 	.remove		= __devexit_p(twl4030reg_remove), | ||||||
|  | 	/* NOTE: short name, to work around driver model truncation of
 | ||||||
|  | 	 * "twl4030_regulator.12" (and friends) to "twl4030_regulator.1". | ||||||
|  | 	 */ | ||||||
|  | 	.driver.name	= "twl4030_reg", | ||||||
|  | 	.driver.owner	= THIS_MODULE, | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | static int __init twl4030reg_init(void) | ||||||
|  | { | ||||||
|  | 	unsigned i, j; | ||||||
|  | 
 | ||||||
|  | 	/* determine min/max voltage constraints, taking into account
 | ||||||
|  | 	 * whether set_voltage() will use the "unsupported" settings | ||||||
|  | 	 */ | ||||||
|  | 	for (i = 0; i < ARRAY_SIZE(twl4030_regs); i++) { | ||||||
|  | 		struct twlreg_info	*info = twl4030_regs + i; | ||||||
|  | 		const u16		*table; | ||||||
|  | 
 | ||||||
|  | 		/* fixed-voltage regulators */ | ||||||
|  | 		if (!info->table_len) | ||||||
|  | 			continue; | ||||||
|  | 
 | ||||||
|  | 		/* LDO regulators: */ | ||||||
|  | 		for (j = 0, table = info->table; | ||||||
|  | 				j < info->table_len; | ||||||
|  | 				j++, table++) { | ||||||
|  | 			u16		mV = *table; | ||||||
|  | 
 | ||||||
|  | 			if (IS_UNSUP(mV)) | ||||||
|  | 				continue; | ||||||
|  | 			mV = LDO_MV(mV); | ||||||
|  | 
 | ||||||
|  | 			if (info->min_mV == 0 || info->min_mV > mV) | ||||||
|  | 				info->min_mV = mV; | ||||||
|  | 			if (info->max_mV < mV) | ||||||
|  | 				info->max_mV = mV; | ||||||
|  | 		} | ||||||
|  | 	} | ||||||
|  | 
 | ||||||
|  | 	return platform_driver_register(&twl4030reg_driver); | ||||||
|  | } | ||||||
|  | subsys_initcall(twl4030reg_init); | ||||||
|  | 
 | ||||||
|  | static void __exit twl4030reg_exit(void) | ||||||
|  | { | ||||||
|  | 	platform_driver_unregister(&twl4030reg_driver); | ||||||
|  | } | ||||||
|  | module_exit(twl4030reg_exit) | ||||||
|  | 
 | ||||||
|  | MODULE_DESCRIPTION("TWL4030 regulator driver"); | ||||||
|  | MODULE_LICENSE("GPL"); | ||||||
|  | @ -218,6 +218,53 @@ int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); | ||||||
| 
 | 
 | ||||||
| /*----------------------------------------------------------------------*/ | /*----------------------------------------------------------------------*/ | ||||||
| 
 | 
 | ||||||
|  | /* Power bus message definitions */ | ||||||
|  | 
 | ||||||
|  | #define DEV_GRP_NULL		0x0 | ||||||
|  | #define DEV_GRP_P1		0x1 | ||||||
|  | #define DEV_GRP_P2		0x2 | ||||||
|  | #define DEV_GRP_P3		0x4 | ||||||
|  | 
 | ||||||
|  | #define RES_GRP_RES		0x0 | ||||||
|  | #define RES_GRP_PP		0x1 | ||||||
|  | #define RES_GRP_RC		0x2 | ||||||
|  | #define RES_GRP_PP_RC		0x3 | ||||||
|  | #define RES_GRP_PR		0x4 | ||||||
|  | #define RES_GRP_PP_PR		0x5 | ||||||
|  | #define RES_GRP_RC_PR		0x6 | ||||||
|  | #define RES_GRP_ALL		0x7 | ||||||
|  | 
 | ||||||
|  | #define RES_TYPE2_R0		0x0 | ||||||
|  | 
 | ||||||
|  | #define RES_TYPE_ALL		0x7 | ||||||
|  | 
 | ||||||
|  | #define RES_STATE_WRST		0xF | ||||||
|  | #define RES_STATE_ACTIVE	0xE | ||||||
|  | #define RES_STATE_SLEEP		0x8 | ||||||
|  | #define RES_STATE_OFF		0x0 | ||||||
|  | 
 | ||||||
|  | /*
 | ||||||
|  |  * Power Bus Message Format ... these can be sent individually by Linux, | ||||||
|  |  * but are usually part of downloaded scripts that are run when various | ||||||
|  |  * power events are triggered. | ||||||
|  |  * | ||||||
|  |  *  Broadcast Message (16 Bits): | ||||||
|  |  *    DEV_GRP[15:13] MT[12]  RES_GRP[11:9]  RES_TYPE2[8:7] RES_TYPE[6:4] | ||||||
|  |  *    RES_STATE[3:0] | ||||||
|  |  * | ||||||
|  |  *  Singular Message (16 Bits): | ||||||
|  |  *    DEV_GRP[15:13] MT[12]  RES_ID[11:4]  RES_STATE[3:0] | ||||||
|  |  */ | ||||||
|  | 
 | ||||||
|  | #define MSG_BROADCAST(devgrp, grp, type, type2, state) \ | ||||||
|  | 	( (devgrp) << 13 | 1 << 12 | (grp) << 9 | (type2) << 7 \ | ||||||
|  | 	| (type) << 4 | (state)) | ||||||
|  | 
 | ||||||
|  | #define MSG_SINGULAR(devgrp, id, state) \ | ||||||
|  | 	((devgrp) << 13 | 0 << 12 | (id) << 4 | (state)) | ||||||
|  | 
 | ||||||
|  | /*----------------------------------------------------------------------*/ | ||||||
|  | 
 | ||||||
| struct twl4030_bci_platform_data { | struct twl4030_bci_platform_data { | ||||||
| 	int *battery_tmp_tbl; | 	int *battery_tmp_tbl; | ||||||
| 	unsigned int tblsize; | 	unsigned int tblsize; | ||||||
|  |  | ||||||
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	 David Brownell
				David Brownell