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Commit 71badc7b authored by Kavya Nunna's avatar Kavya Nunna Committed by Gerrit - the friendly Code Review server
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regulator: rpm-smd-regulator: Add snapshot of rpm-smd-regulator driver 



This is snapshot of the rpm-smd-regulator driver as of msm-4.14
'commit f6af62b0fbea1d0 ("regulator: rpm-smd: Send the logical mode
instead of the raw mode")'.

Change-Id: Ie7a75bc63ae2380cf22b02e6f14b1cc498feb8a5
Signed-off-by: default avatarKavya Nunna <knunna@codeaurora.org>
parent 7340d09c

drivers/regulator/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -1075,6 +1075,17 @@ config REGULATOR_RPMH 
	  control allows for voting on regulator state between multiple

	  processors within the SoC.



config REGULATOR_RPM_SMD

	bool "RPM SMD regulator driver"

	depends on OF

	depends on MSM_RPM_SMD

	help

	  Compile in support for the RPM SMD regulator driver which is used for

	  setting voltages and other parameters of the various power rails

	  supplied by some Qualcomm Technologies Inc. PMICs. The RPM SMD regulator driver should

	  be used on systems which contain an RPM which communicates with the

	  application processor over SMD.



config REGULATOR_STUB

	tristate "Stub Regulator"

	help

drivers/regulator/Makefile

+1 −0
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@@ -81,6 +81,7 @@ obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o 
obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o

obj-$(CONFIG_REGULATOR_QCOM_RPMH) += qcom-rpmh-regulator.o

obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o

obj-$(CONFIG_REGULATOR_RPM_SMD) += rpm-smd-regulator.o

obj-$(CONFIG_REGULATOR_PM8008) += qcom_pm8008-regulator.o

obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o

obj-$(CONFIG_REGULATOR_QPNP_LABIBB) += qpnp-labibb-regulator.o

drivers/regulator/rpm-smd-regulator.c

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+2079 −0

File added.

Preview size limit exceeded, changes collapsed.

include/linux/regulator/rpm-smd-regulator.h

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// SPDX-License-Identifier: GPL-2.0-only

/* Copyright (c) 2012-2013, 2015, 2017, 2019, The Linux Foundation. All rights reserved. */



#ifndef _LINUX_REGULATOR_RPM_SMD_H

#define _LINUX_REGULATOR_RPM_SMD_H



#include <linux/device.h>



struct rpm_regulator;



/**

 * enum rpm_regulator_voltage_corner - possible voltage corner values

 *

 * These should be used in regulator_set_voltage() and

 * rpm_regulator_set_voltage() calls for corner type regulators as if they had

 * units of uV.

 *

 * Note, the meaning of corner values is set by the RPM.  It is possible that

 * future platforms will utilize different corner values.  The values specified

 * in this enum correspond to MSM8974 for PMIC PM8841 SMPS 2 (VDD_Dig).

 */

enum rpm_regulator_voltage_corner {

	RPM_REGULATOR_CORNER_NONE = 1,

	RPM_REGULATOR_CORNER_RETENTION,

	RPM_REGULATOR_CORNER_SVS_KRAIT,

	RPM_REGULATOR_CORNER_SVS_SOC,

	RPM_REGULATOR_CORNER_NORMAL,

	RPM_REGULATOR_CORNER_TURBO,

	RPM_REGULATOR_CORNER_SUPER_TURBO,

};



/**

 * enum rpm_regulator_voltage_level - possible voltage level values

 *

 * These should be used in regulator_set_voltage() and

 * rpm_regulator_set_voltage() calls for level type regulators as if they had

 * units of uV.

 *

 * Note: the meaning of level values is set by the RPM.

 */

enum rpm_regulator_voltage_level {

	RPM_REGULATOR_LEVEL_NONE		= 0,

	RPM_REGULATOR_LEVEL_RETENTION		= 16,

	RPM_REGULATOR_LEVEL_RETENTION_PLUS	= 32,

	RPM_REGULATOR_LEVEL_MIN_SVS		= 48,

	RPM_REGULATOR_LEVEL_LOW_SVS		= 64,

	RPM_REGULATOR_LEVEL_SVS			= 128,

	RPM_REGULATOR_LEVEL_SVS_PLUS		= 192,

	RPM_REGULATOR_LEVEL_NOM			= 256,

	RPM_REGULATOR_LEVEL_NOM_PLUS		= 320,

	RPM_REGULATOR_LEVEL_TURBO		= 384,

	RPM_REGULATOR_LEVEL_TURBO_NO_CPR	= 416,

	RPM_REGULATOR_LEVEL_BINNING		= 512,

	RPM_REGULATOR_LEVEL_MAX			= 65535,

};



/**

 * enum rpm_regulator_mode - control mode for LDO or SMPS type regulators

 * %RPM_REGULATOR_MODE_AUTO:	For SMPS type regulators, use SMPS auto mode so

 *				that the hardware can automatically switch

 *				between PFM and PWM modes based on realtime

 *				load.

 *				LDO type regulators do not support this mode.

 * %RPM_REGULATOR_MODE_IPEAK:	For SMPS type regulators, use aggregated

 *				software current requests to determine

 *				usage of PFM or PWM mode.

 *				For LDO type regulators, use aggregated

 *				software current requests to determine

 *				usage of LPM or HPM mode.

 * %RPM_REGULATOR_MODE_HPM:	For SMPS type regulators, force the

 *				usage of PWM mode.

 *				For LDO type regulators, force the

 *				usage of HPM mode.

 *

 * These values should be used in calls to rpm_regulator_set_mode().

 */

enum rpm_regulator_mode {

	RPM_REGULATOR_MODE_AUTO,

	RPM_REGULATOR_MODE_IPEAK,

	RPM_REGULATOR_MODE_HPM,

};



#ifdef CONFIG_REGULATOR_RPM_SMD



struct rpm_regulator *rpm_regulator_get(struct device *dev, const char *supply);



void rpm_regulator_put(struct rpm_regulator *regulator);



int rpm_regulator_enable(struct rpm_regulator *regulator);



int rpm_regulator_disable(struct rpm_regulator *regulator);



int rpm_regulator_set_voltage(struct rpm_regulator *regulator, int min_uV,

			      int max_uV);



int rpm_regulator_set_mode(struct rpm_regulator *regulator,

				enum rpm_regulator_mode mode);



int __init rpm_smd_regulator_driver_init(void);



#else



static inline struct rpm_regulator *rpm_regulator_get(struct device *dev,

					const char *supply) { return NULL; }



static inline void rpm_regulator_put(struct rpm_regulator *regulator) { }



static inline int rpm_regulator_enable(struct rpm_regulator *regulator)

			{ return 0; }



static inline int rpm_regulator_disable(struct rpm_regulator *regulator)

			{ return 0; }



static inline int rpm_regulator_set_voltage(struct rpm_regulator *regulator,

					int min_uV, int max_uV) { return 0; }



static inline int rpm_regulator_set_mode(struct rpm_regulator *regulator,

				enum rpm_regulator_mode mode) { return 0; }



static inline int __init rpm_smd_regulator_driver_init(void) { return 0; }



#endif /* CONFIG_REGULATOR_RPM_SMD */



#ifdef CONFIG_DEBUG_FS



static void rpm_vreg_create_debugfs(struct rpm_regulator *reg);



#else



static inline void rpm_vreg_create_debugfs(struct rpm_regulator *reg)

{

}

#endif