regulator: add snapshot of cpr3-regulator and dependent drivers
Add a snapshot of the cpr3-regulator family of drivers.
This is a snapshot taken as of msm-4.14 'commit <90153c60c7b956e9fa>
("Merge "pinctrl-msm: Add irq_set_wake support to msmgpio-dc irqchip")'.
Change-Id: I820db77118ced277aafb0f58639e97235d716022
Signed-off-by: Chetan C R <cchinnad@codeaurora.org>
Signed-off-by: Asha Magadi Venkateshamurthy <amagad@codeaurora.org>
This commit is contained in:
Asha Magadi Venkateshamurthy
parent
9fcb976e77
commit
673734a139
8 changed files with 12965 additions and 0 deletions
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@ -1065,6 +1065,41 @@ config REGULATOR_MEM_ACC
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controls delays applied for memory accesses. This driver
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configures the power-mode(corner) for the memory accelerator.
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config REGULATOR_CPR3
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bool "CPR3 regulator core support"
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help
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This driver supports Core Power Reduction (CPR) version 3 controllers
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which are used by some Qualcomm Technologies, Inc. (QTI) SoCs to
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manage important voltage regulators. CPR3 controllers are capable of
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monitoring several ring oscillator sensing loops simultaneously. The
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CPR3 controller informs software when the silicon conditions require
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the supply voltage to be increased or decreased. On certain supply
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rails, the CPR3 controller is able to propagate the voltage increase
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or decrease requests all the way to the PMIC without software
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involvement.
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config REGULATOR_CPR4_MMSS_LDO
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bool "RBCPR3 regulator for MMSS LDO"
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depends on OF
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select REGULATOR_CPR3
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help
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This driver supports Qualcomm Technologies, Inc. MMSS graphics
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processor specific features. The MMSS CPR3 controller only uses one
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thread to monitor the MMSS LDO voltage requirements. This driver reads
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initial voltage values out of hardware fuses and CPR target quotient
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values out of device tree.
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config REGULATOR_CPRH_KBSS
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bool "CPRH regulator for KBSS"
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depends on OF
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select REGULATOR_CPR3
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help
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This driver supports Qualcomm Technologies, Inc. KBSS application
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processor specific features including CPR hardening (CPRh) and two
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CPRh controllers which monitor the two KBSS clusters each powered by
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independent voltage supplies. This driver reads both initial voltage
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and CPR target quotient values out of hardware fuses.
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config REGULATOR_REFGEN
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tristate "Qualcomm Technologies, Inc. REFGEN regulator driver"
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depends on OF
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@ -137,6 +137,9 @@ obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
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obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o
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obj-$(CONFIG_REGULATOR_MEM_ACC) += mem-acc-regulator.o
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obj-$(CONFIG_REGULATOR_MSM_GFX_LDO) += msm_gfx_ldo.o
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obj-$(CONFIG_REGULATOR_CPR3) += cpr3-regulator.o cpr3-util.o
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obj-$(CONFIG_REGULATOR_CPR4_MMSS_LDO) += cpr4-mmss-ldo-regulator.o
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obj-$(CONFIG_REGULATOR_CPRH_KBSS) += cprh-kbss-regulator.o
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obj-$(CONFIG_REGULATOR_REFGEN) += refgen.o
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obj-$(CONFIG_REGULATOR_SPM) += spm-regulator.o
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obj-$(CONFIG_REGULATOR_RPMH) += rpmh-regulator.o
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6471
drivers/regulator/cpr3-regulator.c
Normal file
6471
drivers/regulator/cpr3-regulator.c
Normal file
File diff suppressed because it is too large
Load diff
1103
drivers/regulator/cpr3-regulator.h
Normal file
1103
drivers/regulator/cpr3-regulator.h
Normal file
File diff suppressed because it is too large
Load diff
2405
drivers/regulator/cpr3-util.c
Normal file
2405
drivers/regulator/cpr3-util.c
Normal file
File diff suppressed because it is too large
Load diff
760
drivers/regulator/cpr4-mmss-ldo-regulator.c
Normal file
760
drivers/regulator/cpr4-mmss-ldo-regulator.c
Normal file
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@ -0,0 +1,760 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
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*/
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#define pr_fmt(fmt) "%s: " fmt, __func__
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#include <linux/bitops.h>
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#include <linux/debugfs.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/pm_opp.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/uaccess.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regulator/msm-ldo-regulator.h>
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#include "cpr3-regulator.h"
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#define SDM660_MMSS_FUSE_CORNERS 6
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/**
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* struct cpr4_sdm660_mmss_fuses - MMSS specific fuse data for SDM660
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* @init_voltage: Initial (i.e. open-loop) voltage fuse parameter value
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* for each fuse corner (raw, not converted to a voltage)
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* @offset_voltage: The closed-loop voltage margin adjustment fuse parameter
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* value for each fuse corner (raw, not converted to a
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* voltage)
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* @cpr_fusing_rev: CPR fusing revision fuse parameter value
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* @ldo_enable: The ldo enable fuse parameter for each fuse corner
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* indicates that VDD_GFX can be configured to LDO mode in
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* the corresponding fuse corner.
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* @ldo_cpr_cl_enable: A fuse parameter indicates that GFX CPR can be
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* configured to operate in closed-loop mode when VDD_GFX
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* is configured for LDO sub-regulated mode.
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*
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* This struct holds the values for all of the fuses read from memory.
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*/
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struct cpr4_sdm660_mmss_fuses {
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u64 init_voltage[SDM660_MMSS_FUSE_CORNERS];
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u64 offset_voltage[SDM660_MMSS_FUSE_CORNERS];
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u64 cpr_fusing_rev;
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u64 ldo_enable[SDM660_MMSS_FUSE_CORNERS];
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u64 ldo_cpr_cl_enable;
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};
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/* Fuse combos 0 - 7 map to CPR fusing revision 0 - 7 */
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#define CPR4_SDM660_MMSS_FUSE_COMBO_COUNT 8
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/*
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* SDM660 MMSS fuse parameter locations:
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*
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* Structs are organized with the following dimensions:
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* Outer: 0 to 3 for fuse corners from lowest to highest corner
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* Inner: large enough to hold the longest set of parameter segments which
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* fully defines a fuse parameter, +1 (for NULL termination).
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* Each segment corresponds to a contiguous group of bits from a
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* single fuse row. These segments are concatentated together in
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* order to form the full fuse parameter value. The segments for
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* a given parameter may correspond to different fuse rows.
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*/
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static const struct cpr3_fuse_param
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sdm660_mmss_init_voltage_param[SDM660_MMSS_FUSE_CORNERS][2] = {
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{{65, 39, 43}, {} },
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{{65, 39, 43}, {} },
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{{65, 34, 38}, {} },
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{{65, 34, 38}, {} },
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{{65, 29, 33}, {} },
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{{65, 24, 28}, {} },
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};
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static const struct cpr3_fuse_param sdm660_cpr_fusing_rev_param[] = {
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{71, 34, 36},
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{},
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};
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static const struct cpr3_fuse_param
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sdm660_mmss_offset_voltage_param[SDM660_MMSS_FUSE_CORNERS][2] = {
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{{} },
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{{} },
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{{} },
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{{65, 52, 55}, {} },
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{{65, 48, 51}, {} },
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{{65, 44, 47}, {} },
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};
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static const struct cpr3_fuse_param
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sdm660_mmss_ldo_enable_param[SDM660_MMSS_FUSE_CORNERS][2] = {
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{{73, 62, 62}, {} },
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{{73, 61, 61}, {} },
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{{73, 60, 60}, {} },
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{{73, 59, 59}, {} },
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{{73, 58, 58}, {} },
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{{73, 57, 57}, {} },
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};
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static const struct cpr3_fuse_param sdm660_ldo_cpr_cl_enable_param[] = {
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{71, 38, 38},
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{},
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};
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/* Additional SDM660 specific data: */
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/* Open loop voltage fuse reference voltages in microvolts */
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static const int sdm660_mmss_fuse_ref_volt[SDM660_MMSS_FUSE_CORNERS] = {
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585000,
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645000,
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725000,
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790000,
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870000,
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925000,
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};
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#define SDM660_MMSS_FUSE_STEP_VOLT 10000
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#define SDM660_MMSS_OFFSET_FUSE_STEP_VOLT 10000
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#define SDM660_MMSS_VOLTAGE_FUSE_SIZE 5
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#define SDM660_MMSS_CPR_SENSOR_COUNT 11
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#define SDM660_MMSS_CPR_CLOCK_RATE 19200000
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/**
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* cpr4_sdm660_mmss_read_fuse_data() - load MMSS specific fuse parameter
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* values
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* @vreg: Pointer to the CPR3 regulator
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*
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* This function allocates a cpr4_sdm660_mmss_fuses struct, fills it with
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* values read out of hardware fuses, and finally copies common fuse values
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* into the regulator struct.
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*
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* Return: 0 on success, errno on failure
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*/
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static int cpr4_sdm660_mmss_read_fuse_data(struct cpr3_regulator *vreg)
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{
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void __iomem *base = vreg->thread->ctrl->fuse_base;
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struct cpr4_sdm660_mmss_fuses *fuse;
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int i, rc;
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fuse = devm_kzalloc(vreg->thread->ctrl->dev, sizeof(*fuse), GFP_KERNEL);
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if (!fuse)
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return -ENOMEM;
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rc = cpr3_read_fuse_param(base, sdm660_cpr_fusing_rev_param,
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&fuse->cpr_fusing_rev);
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if (rc) {
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cpr3_err(vreg, "Unable to read CPR fusing revision fuse, rc=%d\n",
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rc);
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return rc;
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}
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cpr3_info(vreg, "CPR fusing revision = %llu\n", fuse->cpr_fusing_rev);
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rc = cpr3_read_fuse_param(base, sdm660_ldo_cpr_cl_enable_param,
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&fuse->ldo_cpr_cl_enable);
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if (rc) {
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cpr3_err(vreg, "Unable to read ldo cpr closed-loop enable fuse, rc=%d\n",
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rc);
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return rc;
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}
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for (i = 0; i < SDM660_MMSS_FUSE_CORNERS; i++) {
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rc = cpr3_read_fuse_param(base,
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sdm660_mmss_init_voltage_param[i],
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&fuse->init_voltage[i]);
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if (rc) {
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cpr3_err(vreg, "Unable to read fuse-corner %d initial voltage fuse, rc=%d\n",
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i, rc);
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return rc;
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}
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rc = cpr3_read_fuse_param(base,
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sdm660_mmss_offset_voltage_param[i],
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&fuse->offset_voltage[i]);
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if (rc) {
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cpr3_err(vreg, "Unable to read fuse-corner %d offset voltage fuse, rc=%d\n",
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i, rc);
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return rc;
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}
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rc = cpr3_read_fuse_param(base,
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sdm660_mmss_ldo_enable_param[i],
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&fuse->ldo_enable[i]);
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if (rc) {
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cpr3_err(vreg, "Unable to read fuse-corner %d ldo enable fuse, rc=%d\n",
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i, rc);
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return rc;
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}
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}
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vreg->fuse_combo = fuse->cpr_fusing_rev;
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if (vreg->fuse_combo >= CPR4_SDM660_MMSS_FUSE_COMBO_COUNT) {
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cpr3_err(vreg, "invalid CPR fuse combo = %d found, not in range 0 - %d\n",
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vreg->fuse_combo,
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CPR4_SDM660_MMSS_FUSE_COMBO_COUNT - 1);
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return -EINVAL;
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}
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vreg->cpr_rev_fuse = fuse->cpr_fusing_rev;
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vreg->fuse_corner_count = SDM660_MMSS_FUSE_CORNERS;
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vreg->platform_fuses = fuse;
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return 0;
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}
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/**
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* cpr3_sdm660_mmss_calculate_open_loop_voltages() - calculate the open-loop
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* voltage for each corner of a CPR3 regulator
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* @vreg: Pointer to the CPR3 regulator
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*
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* Return: 0 on success, errno on failure
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*/
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static int cpr4_sdm660_mmss_calculate_open_loop_voltages(
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struct cpr3_regulator *vreg)
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{
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struct cpr4_sdm660_mmss_fuses *fuse = vreg->platform_fuses;
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int i, rc = 0;
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const int *ref_volt;
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int *fuse_volt;
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fuse_volt = kcalloc(vreg->fuse_corner_count, sizeof(*fuse_volt),
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GFP_KERNEL);
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if (!fuse_volt)
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return -ENOMEM;
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ref_volt = sdm660_mmss_fuse_ref_volt;
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for (i = 0; i < vreg->fuse_corner_count; i++) {
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fuse_volt[i] = cpr3_convert_open_loop_voltage_fuse(ref_volt[i],
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SDM660_MMSS_FUSE_STEP_VOLT, fuse->init_voltage[i],
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SDM660_MMSS_VOLTAGE_FUSE_SIZE);
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cpr3_info(vreg, "fuse_corner[%d] open-loop=%7d uV\n",
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i, fuse_volt[i]);
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}
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rc = cpr3_adjust_fused_open_loop_voltages(vreg, fuse_volt);
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if (rc) {
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cpr3_err(vreg, "fused open-loop voltage adjustment failed, rc=%d\n",
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rc);
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goto done;
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}
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for (i = 1; i < vreg->fuse_corner_count; i++) {
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if (fuse_volt[i] < fuse_volt[i - 1]) {
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cpr3_debug(vreg, "fuse corner %d voltage=%d uV < fuse corner %d voltage=%d uV; overriding: fuse corner %d voltage=%d\n",
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i, fuse_volt[i], i - 1, fuse_volt[i - 1],
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i, fuse_volt[i - 1]);
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fuse_volt[i] = fuse_volt[i - 1];
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}
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}
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for (i = 0; i < vreg->corner_count; i++)
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vreg->corner[i].open_loop_volt
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= fuse_volt[vreg->corner[i].cpr_fuse_corner];
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cpr3_debug(vreg, "unadjusted per-corner open-loop voltages:\n");
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for (i = 0; i < vreg->corner_count; i++)
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cpr3_debug(vreg, "open-loop[%2d] = %d uV\n", i,
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vreg->corner[i].open_loop_volt);
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rc = cpr3_adjust_open_loop_voltages(vreg);
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if (rc)
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cpr3_err(vreg, "open-loop voltage adjustment failed, rc=%d\n",
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rc);
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done:
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kfree(fuse_volt);
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return rc;
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}
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/**
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* cpr4_mmss_parse_ldo_mode_data() - Parse the LDO mode enable state for each
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* corner of a CPR3 regulator
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* @vreg: Pointer to the CPR3 regulator
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*
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* This function considers 2 sets of data: one set from device node and other
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* set from fuses and applies set intersection to decide the final LDO mode
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* enable state of each corner. If the device node configuration is not
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* specified, then the function applies LDO mode disable for all corners.
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*
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* Return: 0 on success, errno on failure
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*/
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static int cpr4_mmss_parse_ldo_mode_data(struct cpr3_regulator *vreg)
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{
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struct cpr4_sdm660_mmss_fuses *fuse = vreg->platform_fuses;
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int i, rc = 0;
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u32 *ldo_allowed;
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char *prop_str = "qcom,cpr-corner-allow-ldo-mode";
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if (!of_find_property(vreg->of_node, prop_str, NULL)) {
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cpr3_debug(vreg, "%s property is missing. LDO mode is disabled for all corners\n",
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prop_str);
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return 0;
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}
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ldo_allowed = kcalloc(vreg->corner_count, sizeof(*ldo_allowed),
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GFP_KERNEL);
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if (!ldo_allowed)
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return -ENOMEM;
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rc = cpr3_parse_corner_array_property(vreg, prop_str, 1, ldo_allowed);
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if (rc) {
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cpr3_err(vreg, "%s read failed, rc=%d\n", prop_str, rc);
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goto done;
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}
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for (i = 0; i < vreg->corner_count; i++)
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vreg->corner[i].ldo_mode_allowed
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= (ldo_allowed[i] && fuse->ldo_enable[i]);
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done:
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kfree(ldo_allowed);
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return rc;
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}
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/**
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* cpr4_mmss_parse_corner_operating_mode() - Parse the CPR closed-loop operation
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* enable state for each corner of a CPR3 regulator
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* @vreg: Pointer to the CPR3 regulator
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*
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* This function ensures that closed-loop operation is enabled only for LDO
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* mode allowed corners.
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*
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* Return: 0 on success, errno on failure
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*/
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static int cpr4_mmss_parse_corner_operating_mode(struct cpr3_regulator *vreg)
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{
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struct cpr4_sdm660_mmss_fuses *fuse = vreg->platform_fuses;
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int i, rc = 0;
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u32 *use_closed_loop;
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char *prop_str = "qcom,cpr-corner-allow-closed-loop";
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if (!of_find_property(vreg->of_node, prop_str, NULL)) {
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cpr3_debug(vreg, "%s property is missing. Use open-loop for all corners\n",
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prop_str);
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for (i = 0; i < vreg->corner_count; i++)
|
||||
vreg->corner[i].use_open_loop = true;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
use_closed_loop = kcalloc(vreg->corner_count, sizeof(*use_closed_loop),
|
||||
GFP_KERNEL);
|
||||
if (!use_closed_loop)
|
||||
return -ENOMEM;
|
||||
|
||||
rc = cpr3_parse_corner_array_property(vreg, prop_str, 1,
|
||||
use_closed_loop);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "%s read failed, rc=%d\n", prop_str, rc);
|
||||
goto done;
|
||||
}
|
||||
|
||||
for (i = 0; i < vreg->corner_count; i++)
|
||||
vreg->corner[i].use_open_loop
|
||||
= !(fuse->ldo_cpr_cl_enable && use_closed_loop[i]
|
||||
&& vreg->corner[i].ldo_mode_allowed);
|
||||
|
||||
done:
|
||||
kfree(use_closed_loop);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_parse_corner_data() - parse MMSS corner data from device tree
|
||||
* properties of the regulator's device node
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_mmss_parse_corner_data(struct cpr3_regulator *vreg)
|
||||
{
|
||||
int i, rc;
|
||||
u32 *temp;
|
||||
|
||||
rc = cpr3_parse_common_corner_data(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "error reading corner data, rc=%d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
temp = kcalloc(vreg->corner_count * CPR3_RO_COUNT, sizeof(*temp),
|
||||
GFP_KERNEL);
|
||||
if (!temp)
|
||||
return -ENOMEM;
|
||||
|
||||
rc = cpr3_parse_corner_array_property(vreg, "qcom,cpr-target-quotients",
|
||||
CPR3_RO_COUNT, temp);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "could not load target quotients, rc=%d\n", rc);
|
||||
goto done;
|
||||
}
|
||||
|
||||
for (i = 0; i < vreg->corner_count; i++)
|
||||
memcpy(vreg->corner[i].target_quot, &temp[i * CPR3_RO_COUNT],
|
||||
sizeof(*temp) * CPR3_RO_COUNT);
|
||||
|
||||
done:
|
||||
kfree(temp);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_sdm660_mmss_adjust_target_quotients() - adjust the target quotients for
|
||||
* each corner according to device tree values and fuse values
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_sdm660_mmss_adjust_target_quotients(struct cpr3_regulator *vreg)
|
||||
{
|
||||
struct cpr4_sdm660_mmss_fuses *fuse = vreg->platform_fuses;
|
||||
const struct cpr3_fuse_param (*offset_param)[2];
|
||||
int *volt_offset;
|
||||
int i, fuse_len, rc = 0;
|
||||
|
||||
volt_offset = kcalloc(vreg->fuse_corner_count, sizeof(*volt_offset),
|
||||
GFP_KERNEL);
|
||||
if (!volt_offset)
|
||||
return -ENOMEM;
|
||||
|
||||
offset_param = sdm660_mmss_offset_voltage_param;
|
||||
for (i = 0; i < vreg->fuse_corner_count; i++) {
|
||||
fuse_len = offset_param[i][0].bit_end + 1
|
||||
- offset_param[i][0].bit_start;
|
||||
volt_offset[i] = cpr3_convert_open_loop_voltage_fuse(
|
||||
0, SDM660_MMSS_OFFSET_FUSE_STEP_VOLT,
|
||||
fuse->offset_voltage[i], fuse_len);
|
||||
if (volt_offset[i])
|
||||
cpr3_info(vreg, "fuse_corner[%d] offset=%7d uV\n",
|
||||
i, volt_offset[i]);
|
||||
}
|
||||
|
||||
rc = cpr3_adjust_target_quotients(vreg, volt_offset);
|
||||
if (rc)
|
||||
cpr3_err(vreg, "adjust target quotients failed, rc=%d\n", rc);
|
||||
|
||||
kfree(volt_offset);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_print_settings() - print out MMSS CPR configuration settings into
|
||||
* the kernel log for debugging purposes
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*/
|
||||
static void cpr4_mmss_print_settings(struct cpr3_regulator *vreg)
|
||||
{
|
||||
struct cpr3_corner *corner;
|
||||
int i;
|
||||
|
||||
cpr3_debug(vreg, "Corner: Frequency (Hz), Fuse Corner, Floor (uV), Open-Loop (uV), Ceiling (uV)\n");
|
||||
for (i = 0; i < vreg->corner_count; i++) {
|
||||
corner = &vreg->corner[i];
|
||||
cpr3_debug(vreg, "%3d: %10u, %2d, %7d, %7d, %7d\n",
|
||||
i, corner->proc_freq, corner->cpr_fuse_corner,
|
||||
corner->floor_volt, corner->open_loop_volt,
|
||||
corner->ceiling_volt);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_init_thread() - perform all steps necessary to initialize the
|
||||
* configuration data for a CPR3 thread
|
||||
* @thread: Pointer to the CPR3 thread
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_mmss_init_thread(struct cpr3_thread *thread)
|
||||
{
|
||||
struct cpr3_controller *ctrl = thread->ctrl;
|
||||
struct cpr3_regulator *vreg = &thread->vreg[0];
|
||||
int rc;
|
||||
|
||||
rc = cpr3_parse_common_thread_data(thread);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to read CPR thread data from device tree, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
if (!of_find_property(ctrl->dev->of_node, "vdd-thread0-ldo-supply",
|
||||
NULL)) {
|
||||
cpr3_err(vreg, "ldo supply regulator is not specified\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vreg->ldo_regulator = devm_regulator_get(ctrl->dev, "vdd-thread0-ldo");
|
||||
if (IS_ERR(vreg->ldo_regulator)) {
|
||||
rc = PTR_ERR(vreg->ldo_regulator);
|
||||
if (rc != -EPROBE_DEFER)
|
||||
cpr3_err(vreg, "unable to request vdd-thread0-ldo regulator, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
vreg->ldo_mode_allowed = !of_property_read_bool(vreg->of_node,
|
||||
"qcom,ldo-disable");
|
||||
vreg->ldo_regulator_bypass = BHS_MODE;
|
||||
vreg->ldo_type = CPR3_LDO300;
|
||||
|
||||
rc = cpr4_sdm660_mmss_read_fuse_data(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to read CPR fuse data, rc=%d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_mmss_parse_corner_data(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to read CPR corner data from device tree, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_sdm660_mmss_adjust_target_quotients(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to adjust target quotients, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_sdm660_mmss_calculate_open_loop_voltages(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to calculate open-loop voltages, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_limit_open_loop_voltages(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to limit open-loop voltages, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
cpr3_open_loop_voltage_as_ceiling(vreg);
|
||||
|
||||
rc = cpr3_limit_floor_voltages(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to limit floor voltages, rc=%d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_mmss_parse_ldo_mode_data(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to parse ldo mode data, rc=%d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_mmss_parse_corner_operating_mode(vreg);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "unable to parse closed-loop operating mode data, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
cpr4_mmss_print_settings(vreg);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_init_controller() - perform MMSS CPR4 controller specific
|
||||
* initializations
|
||||
* @ctrl: Pointer to the CPR3 controller
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_mmss_init_controller(struct cpr3_controller *ctrl)
|
||||
{
|
||||
int rc;
|
||||
|
||||
rc = cpr3_parse_common_ctrl_data(ctrl);
|
||||
if (rc) {
|
||||
if (rc != -EPROBE_DEFER)
|
||||
cpr3_err(ctrl, "unable to parse common controller data, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
ctrl->sensor_count = SDM660_MMSS_CPR_SENSOR_COUNT;
|
||||
|
||||
/*
|
||||
* MMSS only has one thread (0) so the zeroed array does not need
|
||||
* further modification.
|
||||
*/
|
||||
ctrl->sensor_owner = devm_kcalloc(ctrl->dev, ctrl->sensor_count,
|
||||
sizeof(*ctrl->sensor_owner), GFP_KERNEL);
|
||||
if (!ctrl->sensor_owner)
|
||||
return -ENOMEM;
|
||||
|
||||
ctrl->cpr_clock_rate = SDM660_MMSS_CPR_CLOCK_RATE;
|
||||
ctrl->ctrl_type = CPR_CTRL_TYPE_CPR4;
|
||||
ctrl->support_ldo300_vreg = true;
|
||||
|
||||
/*
|
||||
* Use fixed step quotient if specified otherwise use dynamic
|
||||
* calculated per RO step quotient
|
||||
*/
|
||||
of_property_read_u32(ctrl->dev->of_node,
|
||||
"qcom,cpr-step-quot-fixed",
|
||||
&ctrl->step_quot_fixed);
|
||||
ctrl->use_dynamic_step_quot = !ctrl->step_quot_fixed;
|
||||
|
||||
/* iface_clk is optional for sdm660 */
|
||||
ctrl->iface_clk = NULL;
|
||||
ctrl->bus_clk = devm_clk_get(ctrl->dev, "bus_clk");
|
||||
if (IS_ERR(ctrl->bus_clk)) {
|
||||
rc = PTR_ERR(ctrl->bus_clk);
|
||||
if (rc != -EPROBE_DEFER)
|
||||
cpr3_err(ctrl, "unable request bus clock, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cpr4_mmss_regulator_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct cpr3_controller *ctrl;
|
||||
int rc;
|
||||
|
||||
if (!dev->of_node) {
|
||||
dev_err(dev, "Device tree node is missing\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
|
||||
if (!ctrl)
|
||||
return -ENOMEM;
|
||||
|
||||
ctrl->dev = dev;
|
||||
/* Set to false later if anything precludes CPR operation. */
|
||||
ctrl->cpr_allowed_hw = true;
|
||||
|
||||
rc = of_property_read_string(dev->of_node, "qcom,cpr-ctrl-name",
|
||||
&ctrl->name);
|
||||
if (rc) {
|
||||
cpr3_err(ctrl, "unable to read qcom,cpr-ctrl-name, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_map_fuse_base(ctrl, pdev);
|
||||
if (rc) {
|
||||
cpr3_err(ctrl, "could not map fuse base address\n");
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_allocate_threads(ctrl, 0, 0);
|
||||
if (rc) {
|
||||
cpr3_err(ctrl, "failed to allocate CPR thread array, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
if (ctrl->thread_count != 1) {
|
||||
cpr3_err(ctrl, "expected 1 thread but found %d\n",
|
||||
ctrl->thread_count);
|
||||
return -EINVAL;
|
||||
} else if (ctrl->thread[0].vreg_count != 1) {
|
||||
cpr3_err(ctrl, "expected 1 regulator but found %d\n",
|
||||
ctrl->thread[0].vreg_count);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
rc = cpr4_mmss_init_controller(ctrl);
|
||||
if (rc) {
|
||||
if (rc != -EPROBE_DEFER)
|
||||
cpr3_err(ctrl, "failed to initialize CPR controller parameters, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr4_mmss_init_thread(&ctrl->thread[0]);
|
||||
if (rc) {
|
||||
cpr3_err(&ctrl->thread[0].vreg[0], "thread initialization failed, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_mem_acc_init(&ctrl->thread[0].vreg[0]);
|
||||
if (rc) {
|
||||
cpr3_err(ctrl, "failed to initialize mem-acc configuration, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, ctrl);
|
||||
|
||||
return cpr3_regulator_register(pdev, ctrl);
|
||||
}
|
||||
|
||||
static int cpr4_mmss_regulator_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct cpr3_controller *ctrl = platform_get_drvdata(pdev);
|
||||
|
||||
return cpr3_regulator_unregister(ctrl);
|
||||
}
|
||||
|
||||
static int cpr4_mmss_regulator_suspend(struct platform_device *pdev,
|
||||
pm_message_t state)
|
||||
{
|
||||
struct cpr3_controller *ctrl = platform_get_drvdata(pdev);
|
||||
|
||||
return cpr3_regulator_suspend(ctrl);
|
||||
}
|
||||
|
||||
static int cpr4_mmss_regulator_resume(struct platform_device *pdev)
|
||||
{
|
||||
struct cpr3_controller *ctrl = platform_get_drvdata(pdev);
|
||||
|
||||
return cpr3_regulator_resume(ctrl);
|
||||
}
|
||||
|
||||
/* Data corresponds to the SoC revision */
|
||||
static const struct of_device_id cpr4_mmss_regulator_match_table[] = {
|
||||
{
|
||||
.compatible = "qcom,cpr4-sdm660-mmss-ldo-regulator",
|
||||
.data = (void *)NULL,
|
||||
},
|
||||
{ },
|
||||
};
|
||||
|
||||
static struct platform_driver cpr4_mmss_regulator_driver = {
|
||||
.driver = {
|
||||
.name = "qcom,cpr4-mmss-ldo-regulator",
|
||||
.of_match_table = cpr4_mmss_regulator_match_table,
|
||||
},
|
||||
.probe = cpr4_mmss_regulator_probe,
|
||||
.remove = cpr4_mmss_regulator_remove,
|
||||
.suspend = cpr4_mmss_regulator_suspend,
|
||||
.resume = cpr4_mmss_regulator_resume,
|
||||
};
|
||||
|
||||
static int cpr_regulator_init(void)
|
||||
{
|
||||
return platform_driver_register(&cpr4_mmss_regulator_driver);
|
||||
}
|
||||
|
||||
static void cpr_regulator_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&cpr4_mmss_regulator_driver);
|
||||
}
|
||||
|
||||
MODULE_DESCRIPTION("CPR4 MMSS LDO regulator driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
||||
arch_initcall(cpr_regulator_init);
|
||||
module_exit(cpr_regulator_exit);
|
||||
2148
drivers/regulator/cprh-kbss-regulator.c
Normal file
2148
drivers/regulator/cprh-kbss-regulator.c
Normal file
File diff suppressed because it is too large
Load diff
40
include/soc/qcom/apm.h
Normal file
40
include/soc/qcom/apm.h
Normal file
|
|
@ -0,0 +1,40 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-only */
|
||||
/*
|
||||
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_POWER_QCOM_APM_H__
|
||||
#define __LINUX_POWER_QCOM_APM_H__
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/err.h>
|
||||
|
||||
/**
|
||||
* enum msm_apm_supply - supported power rails to supply memory arrays
|
||||
* %MSM_APM_SUPPLY_APCC: to enable selection of VDD_APCC rail as supply
|
||||
* %MSM_APM_SUPPLY_MX: to enable selection of VDD_MX rail as supply
|
||||
*/
|
||||
enum msm_apm_supply {
|
||||
MSM_APM_SUPPLY_APCC,
|
||||
MSM_APM_SUPPLY_MX,
|
||||
};
|
||||
|
||||
/* Handle used to identify an APM controller device */
|
||||
struct msm_apm_ctrl_dev;
|
||||
|
||||
#ifdef CONFIG_MSM_APM
|
||||
struct msm_apm_ctrl_dev *msm_apm_ctrl_dev_get(struct device *dev);
|
||||
int msm_apm_set_supply(struct msm_apm_ctrl_dev *ctrl_dev,
|
||||
enum msm_apm_supply supply);
|
||||
int msm_apm_get_supply(struct msm_apm_ctrl_dev *ctrl_dev);
|
||||
|
||||
#else
|
||||
static inline struct msm_apm_ctrl_dev *msm_apm_ctrl_dev_get(struct device *dev)
|
||||
{ return ERR_PTR(-EPERM); }
|
||||
static inline int msm_apm_set_supply(struct msm_apm_ctrl_dev *ctrl_dev,
|
||||
enum msm_apm_supply supply)
|
||||
{ return -EPERM; }
|
||||
static inline int msm_apm_get_supply(struct msm_apm_ctrl_dev *ctrl_dev)
|
||||
{ return -EPERM; }
|
||||
#endif
|
||||
#endif
|
||||
Loading…
Reference in a new issue