Merge "defconfig: Compile GFX LDO regulator driver for msmfalcon"
This commit is contained in:
Linux Build Service Account
Gerrit - the friendly Code Review server
commit
d106da41c7
8 changed files with 1063 additions and 0 deletions
|
|
@ -0,0 +1,321 @@
|
|||
Qualcomm Technologies, Inc. CPR4 Regulator - MMSS LDO Specific Bindings
|
||||
|
||||
MMSS LDO CPR4 controllers each support one CPR thread that monitors the voltage
|
||||
of the graphics processor (MMSS) supply regulator. The CPR open-loop voltages
|
||||
are stored in hardware fuses for MMSS CPR4 controllers. However, the CPR target
|
||||
quotients must be defined in device tree.
|
||||
|
||||
This document describes the MMSS LDO specific CPR4 bindings.
|
||||
|
||||
=======================
|
||||
Required Node Structure
|
||||
=======================
|
||||
|
||||
CPR3 regulators must be described in three levels of devices nodes. The first
|
||||
level describes the CPR3 controller. The second level describes exacly one
|
||||
hardware thread managed by the controller. The third level describes one or
|
||||
more logical regulators handled by the CPR thread.
|
||||
|
||||
All platform independent cpr3-regulator binding guidelines defined in
|
||||
cpr3-regulator.txt also apply to cpr4-mmss-ldo-regulator devices.
|
||||
|
||||
====================================
|
||||
First Level Nodes - CPR3 Controllers
|
||||
====================================
|
||||
|
||||
MMSS LDO specific properties:
|
||||
- compatible
|
||||
Usage: required
|
||||
Value type: <string>
|
||||
Definition: should be the following:
|
||||
"qcom,cpr4-msmfalcon-mmss-ldo-regulator".
|
||||
|
||||
- clocks
|
||||
Usage: required
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: Array of clock tuples in which each tuple consists of a
|
||||
phandle to a clock device and a clock ID number. The
|
||||
following clocks must be specified: MMSS RBCPR and MMSS
|
||||
RBCPR AHB.
|
||||
|
||||
- clock-names
|
||||
Usage: required
|
||||
Value type: <stringlist>
|
||||
Definition: Clock names. This list must match up 1-to-1 with the clocks
|
||||
specified in the 'clocks' property. "core_clk", and "bus_clk"
|
||||
must be specified.
|
||||
|
||||
- qcom,cpr-step-quot-fixed
|
||||
Usage: Optional
|
||||
Value type: <u32>
|
||||
Definition: Fixed step quotient value used by controller for applying
|
||||
the SDELTA margin adjustments on the programmed target
|
||||
quotient values. The step quotient is the number of
|
||||
additional ring oscillator ticks observed for each
|
||||
qcom,voltage-step increase in vdd-supply output voltage.
|
||||
Supported values: 0 - 63.
|
||||
|
||||
=================================================
|
||||
Second Level Nodes - CPR Threads for a Controller
|
||||
=================================================
|
||||
|
||||
MMSS specific properties:
|
||||
N/A
|
||||
|
||||
===============================================
|
||||
Third Level Nodes - CPR Regulators for a Thread
|
||||
===============================================
|
||||
|
||||
MMSS specific properties:
|
||||
- qcom,cpr-fuse-corners
|
||||
Usage: required
|
||||
Value type: <u32>
|
||||
Definition: Specifies the number of fuse corners. This value must be 6
|
||||
for msmfalcon GFX LDO. These fuse corners are: MinSVS,
|
||||
LowSVS, SVS, SVSP, NOM and NOMP. The open-loop voltage fuses
|
||||
are allocated for LowSVS, SVS, NOM and NOMP corners. The
|
||||
open-loop voltages for MinSVS and SVSP are derived by
|
||||
applying fixed offset from LowSVS and NOM open-loop voltages
|
||||
respectively. The closed-loop offset voltage fuses are
|
||||
allocated for LowSVS, SVS, NOM and NOMP corners. The MinSVS
|
||||
and SVSP corners use the closed-loop offset voltage fuses of
|
||||
LowSVS and NOM corners respectively.
|
||||
|
||||
- qcom,cpr-fuse-combos
|
||||
Usage: required
|
||||
Value type: <u32>
|
||||
Definition: Specifies the number of fuse combinations being supported by
|
||||
the device. This value is utilized by several other
|
||||
properties. Supported values are 1 up to the maximum
|
||||
possible for a given regulator type. For MMSS the maximum
|
||||
supported value is 8. These combos correspond to CPR
|
||||
revision fuse values from 0 to 7 in order.
|
||||
|
||||
- qcom,mem-acc-voltage
|
||||
Usage: required if mem-acc-supply is specified for the CPR3 controller
|
||||
containing this CPR3 regulator
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: A list of integer tuples which each define the mem-acc-supply
|
||||
corner for each voltage corner in order from lowest to highest.
|
||||
|
||||
The list must contain qcom,cpr-fuse-combos number of tuples
|
||||
in which case the tuples are matched to fuse combinations
|
||||
1-to-1 or qcom,cpr-speed-bins number of tuples in which case
|
||||
the tuples are matched to speed bins 1-to-1 or exactly 1
|
||||
tuple which is used regardless of the fuse combination and
|
||||
speed bin found on a given chip.
|
||||
|
||||
Each tuple must be of the length defined in the
|
||||
corresponding element of the qcom,cpr-corners property or
|
||||
the qcom,cpr-speed-bins property. A single tuple may only
|
||||
be specified if all of the corner counts in qcom,cpr-corners
|
||||
are the same.
|
||||
|
||||
- qcom,cpr-target-quotients
|
||||
Usage: required
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: A grouping of integer tuple lists. Each tuple defines the
|
||||
CPR target quotient for each ring oscillator (RO) for a
|
||||
given corner. Since CPR3 supports exactly 16 ROs, each
|
||||
tuple must contain 16 elements corresponding to RO0 through
|
||||
RO15 in order. If a given RO is unused for a corner, then
|
||||
its target quotient should be specified as 0.
|
||||
|
||||
Each tuple list in the grouping must meet the same size
|
||||
requirements as those specified for qcom,mem-acc-voltage
|
||||
above. The tuples in a given list are ordered from the
|
||||
lowest corner to the highest corner.
|
||||
|
||||
- qcom,cpr-ro-scaling-factor
|
||||
Usage: required if qcom,cpr-closed-loop-voltage-adjustment is
|
||||
specified
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: The common definition of this property in cpr3-regulator.txt
|
||||
is accurate for MMSS CPR3 controllers except for this
|
||||
modification:
|
||||
|
||||
Each tuple list must contain the number of tuples defined in
|
||||
the corresponding element of the qcom,cpr-corners property
|
||||
or the qcom,cpr-speed-bins property as opposed to the value
|
||||
of the qcom,cpr-fuse-corners property.
|
||||
|
||||
- qcom,cpr-fused-closed-loop-voltage-adjustment-map
|
||||
Usage: optional
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: A list of integer tuples which each define the CPR fused
|
||||
corner closed-loop offset adjustment fuse to utilize for
|
||||
each voltage corner in order from lowest to highest.
|
||||
|
||||
The list must contain qcom,cpr-fuse-combos number of tuples
|
||||
in which case the tuples are matched to fuse combinations
|
||||
1-to-1 or qcom,cpr-speed-bins number of tuples in which case
|
||||
the tuples are matched to speed bins 1-to-1 or exactly 1
|
||||
tuple which is used regardless of the fuse combination and
|
||||
speed bin found on a given chip.
|
||||
|
||||
Each tuple must be of the length defined in the
|
||||
corresponding element of the qcom,cpr-corners property or
|
||||
the qcom,cpr-speed-bins property. A single tuple may only
|
||||
be specified if all of the corner counts in qcom,cpr-corners
|
||||
are the same.
|
||||
|
||||
Each tuple element must be either 0 or in the range 1 to
|
||||
qcom,cpr-fuse-corners. A value of 0 signifies that no fuse
|
||||
based adjustment should be applied to the fuse corner.
|
||||
Values 1 to qcom,cpr-fuse-corners denote the specific fuse
|
||||
corner that should be used by a given voltage corner.
|
||||
|
||||
- qcom,cpr-corner-allow-ldo-mode
|
||||
Usage: optional
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: A list of integer tuples which each define the LDO mode
|
||||
allowed state for each voltage corner in order from lowest
|
||||
to highest. Each element in the tuple should be either
|
||||
0 (LDO mode not allowed) or 1 (LDO mode allowed).
|
||||
|
||||
The list must contain qcom,cpr-fuse-combos number of tuples
|
||||
in which case the tuples are matched to fuse combinations
|
||||
1-to-1 or qcom,cpr-speed-bins number of tuples in which case
|
||||
the tuples are matched to speed bins 1-to-1 or exactly 1
|
||||
tuple which is used regardless of the fuse combination and
|
||||
speed bin found on a given chip.
|
||||
|
||||
Each tuple must be of the length defined in the
|
||||
corresponding element of the qcom,cpr-corners property or
|
||||
the qcom,cpr-speed-bin-corners property. A single tuple may
|
||||
only be specified if all of the corner counts in
|
||||
qcom,cpr-corners are the same.
|
||||
|
||||
- qcom,cpr-corner-allow-closed-loop
|
||||
Usage: optional
|
||||
Value type: <prop-encoded-array>
|
||||
Definition: A list of integer tuples which each define the CPR
|
||||
closed-loop operation allowed state for each voltage corner
|
||||
in order from lowest to highest. Each element in the tuple
|
||||
should be either 0 (CPR closed-loop operation not allowed)
|
||||
or 1 (CPR closed-loop operation allowed).
|
||||
|
||||
The list must contain qcom,cpr-fuse-combos number of tuples
|
||||
in which case the tuples are matched to fuse combinations
|
||||
1-to-1 or qcom,cpr-speed-bins number of tuples in which case
|
||||
the tuples are matched to speed bins 1-to-1 or exactly 1
|
||||
tuple which is used regardless of the fuse combination and
|
||||
speed bin found on a given chip.
|
||||
|
||||
Each tuple must be of the length defined in the
|
||||
corresponding element of the qcom,cpr-corners property or
|
||||
the qcom,cpr-speed-bin-corners property. A single tuple may
|
||||
only be specified if all of the corner counts in
|
||||
qcom,cpr-corners are the same.
|
||||
|
||||
Note that the qcom,cpr-closed-loop-voltage-fuse-adjustment property is not
|
||||
meaningful for MMSS LDO CPR3 regulator nodes since target quotients are not
|
||||
defined in fuses.
|
||||
|
||||
=======
|
||||
Example
|
||||
=======
|
||||
|
||||
gfx_cpr: cpr4-ctrl@05061000 {
|
||||
compatible = "qcom,cpr4-msmfalcon-mmss-ldo-regulator";
|
||||
reg = <0x05061000 0x4000>, <0x00784000 0x1000>;
|
||||
reg-names = "cpr_ctrl", "fuse_base";
|
||||
interrupts = <GIC_SPI 285 IRQ_TYPE_EDGE_RISING>;
|
||||
interrupt-names = "cpr";
|
||||
qcom,cpr-ctrl-name = "gfx";
|
||||
|
||||
qcom,cpr-sensor-time = <1000>;
|
||||
qcom,cpr-loop-time = <5000000>;
|
||||
qcom,cpr-idle-cycles = <15>;
|
||||
qcom,cpr-step-quot-init-min = <8>;
|
||||
qcom,cpr-step-quot-init-max = <12>;
|
||||
qcom,cpr-count-mode = <0>; /* All at once */
|
||||
|
||||
vdd-supply = <&gfx_stub_vreg>;
|
||||
mem-acc-supply = <&gfx_mem_acc_vreg>;
|
||||
system-supply = <&pm2falcon_s3_level>; /* vdd_cx */
|
||||
qcom,voltage-step = <5000>;
|
||||
vdd-thread0-ldo-supply = <&gfx_ldo_vreg>;
|
||||
|
||||
qcom,cpr-enable;
|
||||
|
||||
thread@0 {
|
||||
qcom,cpr-thread-id = <0>;
|
||||
qcom,cpr-consecutive-up = <0>;
|
||||
qcom,cpr-consecutive-down = <2>;
|
||||
qcom,cpr-up-threshold = <0>;
|
||||
qcom,cpr-down-threshold = <2>;
|
||||
|
||||
gfx_vreg_corner: regulator {
|
||||
regulator-name = "gfx_corner";
|
||||
regulator-min-microvolt = <1>;
|
||||
regulator-max-microvolt = <7>;
|
||||
|
||||
qcom,cpr-fuse-corners = <6>;
|
||||
qcom,cpr-fuse-combos = <8>;
|
||||
qcom,cpr-corners = <7>;
|
||||
|
||||
qcom,cpr-corner-fmax-map = <1 2 3 4 5 6>;
|
||||
|
||||
qcom,cpr-voltage-ceiling =
|
||||
<584000 644000 724000 788000
|
||||
868000 924000 1068000>;
|
||||
qcom,cpr-voltage-floor =
|
||||
<504000 504000 596000 652000
|
||||
712000 744000 1068000>;
|
||||
|
||||
qcom,mem-acc-voltage = <1 1 1 2 2 2 2>;
|
||||
qcom,system-voltage =
|
||||
<RPM_SMD_REGULATOR_LEVEL_MIN_SVS>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_LOW_SVS>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_SVS>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_SVS_PLUS>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_NOM>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_NOM_PLUS>,
|
||||
<RPM_SMD_REGULATOR_LEVEL_TURBO>;
|
||||
|
||||
qcom,corner-frequencies =
|
||||
<160000000 266000000 370000000
|
||||
465000000 588000000 647000000
|
||||
800000000>;
|
||||
|
||||
qcom,cpr-target-quotients =
|
||||
<0 0 0 0 0 0 185 179
|
||||
291 299 304 319 0 0 0 0>,
|
||||
<0 0 0 0 0 0 287 273
|
||||
425 426 443 453 0 0 0 0>,
|
||||
<0 0 0 0 0 0 414 392
|
||||
584 576 608 612 0 0 0 0>,
|
||||
<0 0 0 0 0 0 459 431
|
||||
684 644 692 679 0 0 0 0>,
|
||||
<0 0 0 0 0 0 577 543
|
||||
798 768 823 810 0 0 0 0>,
|
||||
<0 0 0 0 0 0 669 629
|
||||
886 864 924 911 0 0 0 0>,
|
||||
<0 0 0 0 0 0 0 0
|
||||
0 0 0 0 0 0 0 0>;
|
||||
|
||||
qcom,cpr-ro-scaling-factor =
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 2035 1917
|
||||
1959 2131 2246 2253 0 0 0 0>,
|
||||
< 0 0 0 0 0 0 0 0
|
||||
0 0 0 0 0 0 0 0>;
|
||||
|
||||
qcom,cpr-scaled-open-loop-voltage-as-ceiling;
|
||||
qcom,cpr-corner-ldo-mode-allowed =
|
||||
<1 1 1 1 1 1 0>;
|
||||
qcom,cpr-corner-use-closed-loop =
|
||||
<1 1 1 1 1 1 0>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
@ -348,6 +348,7 @@ CONFIG_WCD9335_CODEC=y
|
|||
CONFIG_WCD934X_CODEC=y
|
||||
CONFIG_REGULATOR=y
|
||||
CONFIG_REGULATOR_FIXED_VOLTAGE=y
|
||||
CONFIG_REGULATOR_MSM_GFX_LDO=y
|
||||
CONFIG_REGULATOR_RPM_SMD=y
|
||||
CONFIG_REGULATOR_QPNP=y
|
||||
CONFIG_REGULATOR_QPNP_LABIBB=y
|
||||
|
|
@ -355,6 +356,7 @@ CONFIG_REGULATOR_SPM=y
|
|||
CONFIG_REGULATOR_CPR3_HMSS=y
|
||||
CONFIG_REGULATOR_CPR3_MMSS=y
|
||||
CONFIG_REGULATOR_CPRH_KBSS=y
|
||||
CONFIG_REGULATOR_CPR4_MMSS_LDO=y
|
||||
CONFIG_REGULATOR_MEM_ACC=y
|
||||
CONFIG_REGULATOR_PROXY_CONSUMER=y
|
||||
CONFIG_REGULATOR_STUB=y
|
||||
|
|
|
|||
|
|
@ -346,6 +346,7 @@ CONFIG_WCD9335_CODEC=y
|
|||
CONFIG_WCD934X_CODEC=y
|
||||
CONFIG_REGULATOR=y
|
||||
CONFIG_REGULATOR_FIXED_VOLTAGE=y
|
||||
CONFIG_REGULATOR_MSM_GFX_LDO=y
|
||||
CONFIG_REGULATOR_RPM_SMD=y
|
||||
CONFIG_REGULATOR_QPNP=y
|
||||
CONFIG_REGULATOR_QPNP_LABIBB=y
|
||||
|
|
@ -354,6 +355,7 @@ CONFIG_REGULATOR_SPM=y
|
|||
CONFIG_REGULATOR_CPR3_HMSS=y
|
||||
CONFIG_REGULATOR_CPR3_MMSS=y
|
||||
CONFIG_REGULATOR_CPRH_KBSS=y
|
||||
CONFIG_REGULATOR_CPR4_MMSS_LDO=y
|
||||
CONFIG_REGULATOR_MEM_ACC=y
|
||||
CONFIG_REGULATOR_PROXY_CONSUMER=y
|
||||
CONFIG_REGULATOR_STUB=y
|
||||
|
|
|
|||
|
|
@ -346,6 +346,7 @@ CONFIG_WCD9335_CODEC=y
|
|||
CONFIG_WCD934X_CODEC=y
|
||||
CONFIG_REGULATOR=y
|
||||
CONFIG_REGULATOR_FIXED_VOLTAGE=y
|
||||
CONFIG_REGULATOR_MSM_GFX_LDO=y
|
||||
CONFIG_REGULATOR_RPM_SMD=y
|
||||
CONFIG_REGULATOR_QPNP=y
|
||||
CONFIG_REGULATOR_QPNP_LABIBB=y
|
||||
|
|
@ -354,6 +355,7 @@ CONFIG_REGULATOR_SPM=y
|
|||
CONFIG_REGULATOR_CPR3_HMSS=y
|
||||
CONFIG_REGULATOR_CPR3_MMSS=y
|
||||
CONFIG_REGULATOR_CPRH_KBSS=y
|
||||
CONFIG_REGULATOR_CPR4_MMSS_LDO=y
|
||||
CONFIG_REGULATOR_MEM_ACC=y
|
||||
CONFIG_REGULATOR_PROXY_CONSUMER=y
|
||||
CONFIG_REGULATOR_STUB=y
|
||||
|
|
|
|||
|
|
@ -348,6 +348,7 @@ CONFIG_WCD9335_CODEC=y
|
|||
CONFIG_WCD934X_CODEC=y
|
||||
CONFIG_REGULATOR=y
|
||||
CONFIG_REGULATOR_FIXED_VOLTAGE=y
|
||||
CONFIG_REGULATOR_MSM_GFX_LDO=y
|
||||
CONFIG_REGULATOR_RPM_SMD=y
|
||||
CONFIG_REGULATOR_QPNP=y
|
||||
CONFIG_REGULATOR_QPNP_LABIBB=y
|
||||
|
|
@ -356,6 +357,7 @@ CONFIG_REGULATOR_SPM=y
|
|||
CONFIG_REGULATOR_CPR3_HMSS=y
|
||||
CONFIG_REGULATOR_CPR3_MMSS=y
|
||||
CONFIG_REGULATOR_CPRH_KBSS=y
|
||||
CONFIG_REGULATOR_CPR4_MMSS_LDO=y
|
||||
CONFIG_REGULATOR_MEM_ACC=y
|
||||
CONFIG_REGULATOR_PROXY_CONSUMER=y
|
||||
CONFIG_REGULATOR_STUB=y
|
||||
|
|
|
|||
|
|
@ -925,6 +925,17 @@ config REGULATOR_CPRH_KBSS
|
|||
independent voltage supplies. This driver reads both initial voltage
|
||||
and CPR target quotient values out of hardware fuses.
|
||||
|
||||
config REGULATOR_CPR4_MMSS_LDO
|
||||
bool "RBCPR3 regulator for MMSS LDO"
|
||||
depends on OF
|
||||
select REGULATOR_CPR3
|
||||
help
|
||||
This driver supports Qualcomm Technologies, Inc. MMSS graphics
|
||||
processor specific features. The MMSS CPR3 controller only uses one
|
||||
thread to monitor the MMSS LDO voltage requirements. This driver reads
|
||||
initial voltage values out of hardware fuses and CPR target quotient
|
||||
values out of device tree.
|
||||
|
||||
config REGULATOR_KRYO
|
||||
bool "Kryo regulator driver"
|
||||
depends on OF
|
||||
|
|
|
|||
|
|
@ -114,6 +114,7 @@ obj-$(CONFIG_REGULATOR_CPR3_HMSS) += cpr3-hmss-regulator.o
|
|||
obj-$(CONFIG_REGULATOR_CPR3_MMSS) += cpr3-mmss-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_CPR4_APSS) += cpr4-apss-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_CPRH_KBSS) += cprh-kbss-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_CPR4_MMSS_LDO) += cpr4-mmss-ldo-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_QPNP_LABIBB) += qpnp-labibb-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_QPNP_LCDB) += qpnp-lcdb-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_STUB) += stub-regulator.o
|
||||
|
|
|
|||
722
drivers/regulator/cpr4-mmss-ldo-regulator.c
Normal file
722
drivers/regulator/cpr4-mmss-ldo-regulator.c
Normal file
|
|
@ -0,0 +1,722 @@
|
|||
/*
|
||||
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 and
|
||||
* only version 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#define pr_fmt(fmt) "%s: " fmt, __func__
|
||||
|
||||
#include <linux/bitops.h>
|
||||
#include <linux/debugfs.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm_opp.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
#include <linux/regulator/msm-ldo-regulator.h>
|
||||
|
||||
#include "cpr3-regulator.h"
|
||||
|
||||
#define MSMFALCON_MMSS_FUSE_CORNERS 6
|
||||
|
||||
/**
|
||||
* struct cpr4_msmfalcon_mmss_fuses - MMSS specific fuse data for MSMFALCON
|
||||
* @init_voltage: Initial (i.e. open-loop) voltage fuse parameter value
|
||||
* for each fuse corner (raw, not converted to a voltage)
|
||||
* @offset_voltage: The closed-loop voltage margin adjustment fuse parameter
|
||||
* value for each fuse corner (raw, not converted to a
|
||||
* voltage)
|
||||
* @cpr_fusing_rev: CPR fusing revision fuse parameter value
|
||||
* @ldo_enable: The ldo enable fuse parameter for each fuse corner
|
||||
* indicates that VDD_GFX can be configured to LDO mode in
|
||||
* the corresponding fuse corner.
|
||||
* @ldo_cpr_cl_enable: A fuse parameter indicates that GFX CPR can be
|
||||
* configured to operate in closed-loop mode when VDD_GFX
|
||||
* is configured for LDO sub-regulated mode.
|
||||
*
|
||||
* This struct holds the values for all of the fuses read from memory.
|
||||
*/
|
||||
struct cpr4_msmfalcon_mmss_fuses {
|
||||
u64 init_voltage[MSMFALCON_MMSS_FUSE_CORNERS];
|
||||
u64 offset_voltage[MSMFALCON_MMSS_FUSE_CORNERS];
|
||||
u64 cpr_fusing_rev;
|
||||
u64 ldo_enable[MSMFALCON_MMSS_FUSE_CORNERS];
|
||||
u64 ldo_cpr_cl_enable;
|
||||
};
|
||||
|
||||
/* Fuse combos 0 - 7 map to CPR fusing revision 0 - 7 */
|
||||
#define CPR4_MSMFALCON_MMSS_FUSE_COMBO_COUNT 8
|
||||
|
||||
/*
|
||||
* MSMFALCON MMSS fuse parameter locations:
|
||||
*
|
||||
* Structs are organized with the following dimensions:
|
||||
* Outer: 0 to 3 for fuse corners from lowest to highest corner
|
||||
* Inner: large enough to hold the longest set of parameter segments which
|
||||
* fully defines a fuse parameter, +1 (for NULL termination).
|
||||
* Each segment corresponds to a contiguous group of bits from a
|
||||
* single fuse row. These segments are concatentated together in
|
||||
* order to form the full fuse parameter value. The segments for
|
||||
* a given parameter may correspond to different fuse rows.
|
||||
*/
|
||||
static const struct cpr3_fuse_param
|
||||
msmfalcon_mmss_init_voltage_param[MSMFALCON_MMSS_FUSE_CORNERS][2] = {
|
||||
{{65, 39, 43}, {} },
|
||||
{{65, 39, 43}, {} },
|
||||
{{65, 34, 38}, {} },
|
||||
{{65, 34, 38}, {} },
|
||||
{{65, 29, 33}, {} },
|
||||
{{65, 24, 28}, {} },
|
||||
};
|
||||
|
||||
static const struct cpr3_fuse_param msmfalcon_cpr_fusing_rev_param[] = {
|
||||
{71, 34, 36},
|
||||
{},
|
||||
};
|
||||
|
||||
static const struct cpr3_fuse_param
|
||||
msmfalcon_mmss_offset_voltage_param[MSMFALCON_MMSS_FUSE_CORNERS][2] = {
|
||||
{{} },
|
||||
{{} },
|
||||
{{} },
|
||||
{{65, 52, 55}, {} },
|
||||
{{65, 48, 51}, {} },
|
||||
{{65, 44, 47}, {} },
|
||||
};
|
||||
|
||||
static const struct cpr3_fuse_param
|
||||
msmfalcon_mmss_ldo_enable_param[MSMFALCON_MMSS_FUSE_CORNERS][2] = {
|
||||
{{73, 62, 62}, {} },
|
||||
{{73, 61, 61}, {} },
|
||||
{{73, 60, 60}, {} },
|
||||
{{73, 59, 59}, {} },
|
||||
{{73, 58, 58}, {} },
|
||||
{{73, 57, 57}, {} },
|
||||
};
|
||||
|
||||
static const struct cpr3_fuse_param msmfalcon_ldo_cpr_cl_enable_param[] = {
|
||||
{71, 38, 38},
|
||||
{},
|
||||
};
|
||||
|
||||
/* Additional MSMFALCON specific data: */
|
||||
|
||||
/* Open loop voltage fuse reference voltages in microvolts */
|
||||
static const int msmfalcon_mmss_fuse_ref_volt[MSMFALCON_MMSS_FUSE_CORNERS] = {
|
||||
584000,
|
||||
644000,
|
||||
724000,
|
||||
788000,
|
||||
868000,
|
||||
924000,
|
||||
};
|
||||
|
||||
#define MSMFALCON_MMSS_FUSE_STEP_VOLT 10000
|
||||
#define MSMFALCON_MMSS_OFFSET_FUSE_STEP_VOLT 10000
|
||||
#define MSMFALCON_MMSS_VOLTAGE_FUSE_SIZE 5
|
||||
|
||||
#define MSMFALCON_MMSS_CPR_SENSOR_COUNT 11
|
||||
|
||||
#define MSMFALCON_MMSS_CPR_CLOCK_RATE 19200000
|
||||
|
||||
/**
|
||||
* cpr4_msmfalcon_mmss_read_fuse_data() - load MMSS specific fuse parameter
|
||||
* values
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* This function allocates a cpr4_msmfalcon_mmss_fuses struct, fills it with
|
||||
* values read out of hardware fuses, and finally copies common fuse values
|
||||
* into the regulator struct.
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_msmfalcon_mmss_read_fuse_data(struct cpr3_regulator *vreg)
|
||||
{
|
||||
void __iomem *base = vreg->thread->ctrl->fuse_base;
|
||||
struct cpr4_msmfalcon_mmss_fuses *fuse;
|
||||
int i, rc;
|
||||
|
||||
fuse = devm_kzalloc(vreg->thread->ctrl->dev, sizeof(*fuse), GFP_KERNEL);
|
||||
if (!fuse)
|
||||
return -ENOMEM;
|
||||
|
||||
rc = cpr3_read_fuse_param(base, msmfalcon_cpr_fusing_rev_param,
|
||||
&fuse->cpr_fusing_rev);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "Unable to read CPR fusing revision fuse, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
cpr3_info(vreg, "CPR fusing revision = %llu\n", fuse->cpr_fusing_rev);
|
||||
|
||||
rc = cpr3_read_fuse_param(base, msmfalcon_ldo_cpr_cl_enable_param,
|
||||
&fuse->ldo_cpr_cl_enable);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "Unable to read ldo cpr closed-loop enable fuse, rc=%d\n",
|
||||
rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
for (i = 0; i < MSMFALCON_MMSS_FUSE_CORNERS; i++) {
|
||||
rc = cpr3_read_fuse_param(base,
|
||||
msmfalcon_mmss_init_voltage_param[i],
|
||||
&fuse->init_voltage[i]);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "Unable to read fuse-corner %d initial voltage fuse, rc=%d\n",
|
||||
i, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_read_fuse_param(base,
|
||||
msmfalcon_mmss_offset_voltage_param[i],
|
||||
&fuse->offset_voltage[i]);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "Unable to read fuse-corner %d offset voltage fuse, rc=%d\n",
|
||||
i, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = cpr3_read_fuse_param(base,
|
||||
msmfalcon_mmss_ldo_enable_param[i],
|
||||
&fuse->ldo_enable[i]);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "Unable to read fuse-corner %d ldo enable fuse, rc=%d\n",
|
||||
i, rc);
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
vreg->fuse_combo = fuse->cpr_fusing_rev;
|
||||
if (vreg->fuse_combo >= CPR4_MSMFALCON_MMSS_FUSE_COMBO_COUNT) {
|
||||
cpr3_err(vreg, "invalid CPR fuse combo = %d found, not in range 0 - %d\n",
|
||||
vreg->fuse_combo,
|
||||
CPR4_MSMFALCON_MMSS_FUSE_COMBO_COUNT - 1);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vreg->cpr_rev_fuse = fuse->cpr_fusing_rev;
|
||||
vreg->fuse_corner_count = MSMFALCON_MMSS_FUSE_CORNERS;
|
||||
vreg->platform_fuses = fuse;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr3_msmfalcon_mmss_calculate_open_loop_voltages() - calculate the open-loop
|
||||
* voltage for each corner of a CPR3 regulator
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_msmfalcon_mmss_calculate_open_loop_voltages(
|
||||
struct cpr3_regulator *vreg)
|
||||
{
|
||||
struct cpr4_msmfalcon_mmss_fuses *fuse = vreg->platform_fuses;
|
||||
int i, rc = 0;
|
||||
const int *ref_volt;
|
||||
int *fuse_volt;
|
||||
|
||||
fuse_volt = kcalloc(vreg->fuse_corner_count, sizeof(*fuse_volt),
|
||||
GFP_KERNEL);
|
||||
if (!fuse_volt)
|
||||
return -ENOMEM;
|
||||
|
||||
ref_volt = msmfalcon_mmss_fuse_ref_volt;
|
||||
for (i = 0; i < vreg->fuse_corner_count; i++) {
|
||||
fuse_volt[i] = cpr3_convert_open_loop_voltage_fuse(ref_volt[i],
|
||||
MSMFALCON_MMSS_FUSE_STEP_VOLT, fuse->init_voltage[i],
|
||||
MSMFALCON_MMSS_VOLTAGE_FUSE_SIZE);
|
||||
cpr3_info(vreg, "fuse_corner[%d] open-loop=%7d uV\n",
|
||||
i, fuse_volt[i]);
|
||||
}
|
||||
|
||||
rc = cpr3_adjust_fused_open_loop_voltages(vreg, fuse_volt);
|
||||
if (rc) {
|
||||
cpr3_err(vreg, "fused open-loop voltage adjustment failed, rc=%d\n",
|
||||
rc);
|
||||
goto done;
|
||||
}
|
||||
|
||||
for (i = 1; i < vreg->fuse_corner_count; i++) {
|
||||
if (fuse_volt[i] < fuse_volt[i - 1]) {
|
||||
cpr3_debug(vreg, "fuse corner %d voltage=%d uV < fuse corner %d voltage=%d uV; overriding: fuse corner %d voltage=%d\n",
|
||||
i, fuse_volt[i], i - 1, fuse_volt[i - 1],
|
||||
i, fuse_volt[i - 1]);
|
||||
fuse_volt[i] = fuse_volt[i - 1];
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < vreg->corner_count; i++)
|
||||
vreg->corner[i].open_loop_volt
|
||||
= fuse_volt[vreg->corner[i].cpr_fuse_corner];
|
||||
|
||||
cpr3_debug(vreg, "unadjusted per-corner open-loop voltages:\n");
|
||||
for (i = 0; i < vreg->corner_count; i++)
|
||||
cpr3_debug(vreg, "open-loop[%2d] = %d uV\n", i,
|
||||
vreg->corner[i].open_loop_volt);
|
||||
|
||||
rc = cpr3_adjust_open_loop_voltages(vreg);
|
||||
if (rc)
|
||||
cpr3_err(vreg, "open-loop voltage adjustment failed, rc=%d\n",
|
||||
rc);
|
||||
|
||||
done:
|
||||
kfree(fuse_volt);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_parse_ldo_mode_data() - Parse the LDO mode enable state for each
|
||||
* corner of a CPR3 regulator
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* This function considers 2 sets of data: one set from device node and other
|
||||
* set from fuses and applies set intersection to decide the final LDO mode
|
||||
* enable state of each corner. If the device node configuration is not
|
||||
* specified, then the function applies LDO mode disable for all corners.
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_mmss_parse_ldo_mode_data(struct cpr3_regulator *vreg)
|
||||
{
|
||||
struct cpr4_msmfalcon_mmss_fuses *fuse = vreg->platform_fuses;
|
||||
int i, rc = 0;
|
||||
u32 *ldo_allowed;
|
||||
char *prop_str = "qcom,cpr-corner-allow-ldo-mode";
|
||||
|
||||
if (!of_find_property(vreg->of_node, prop_str, NULL)) {
|
||||
cpr3_debug(vreg, "%s property is missing. LDO mode is disabled for all corners\n",
|
||||
prop_str);
|
||||
return 0;
|
||||
}
|
||||
|
||||
ldo_allowed = kcalloc(vreg->corner_count, sizeof(*ldo_allowed),
|
||||
GFP_KERNEL);
|
||||
if (!ldo_allowed)
|
||||
return -ENOMEM;
|
||||
|
||||
rc = cpr3_parse_corner_array_property(vreg, prop_str, 1, ldo_allowed);
|
||||
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].ldo_mode_allowed
|
||||
= (ldo_allowed[i] && fuse->ldo_enable[i]);
|
||||
|
||||
done:
|
||||
kfree(ldo_allowed);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* cpr4_mmss_parse_corner_operating_mode() - Parse the CPR closed-loop operation
|
||||
* enable state for each corner of a CPR3 regulator
|
||||
* @vreg: Pointer to the CPR3 regulator
|
||||
*
|
||||
* This function ensures that closed-loop operation is enabled only for LDO
|
||||
* mode allowed corners.
|
||||
*
|
||||
* Return: 0 on success, errno on failure
|
||||
*/
|
||||
static int cpr4_mmss_parse_corner_operating_mode(struct cpr3_regulator *vreg)
|
||||
{
|
||||
struct cpr4_msmfalcon_mmss_fuses *fuse = vreg->platform_fuses;
|
||||
int i, rc = 0;
|
||||
u32 *use_closed_loop;
|
||||
char *prop_str = "qcom,cpr-corner-allow-closed-loop";
|
||||
|
||||
if (!of_find_property(vreg->of_node, prop_str, NULL)) {
|
||||
cpr3_debug(vreg, "%s property is missing. Use open-loop for all corners\n",
|
||||
prop_str);
|
||||
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_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_msmfalcon_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_msmfalcon_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 = MSMFALCON_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 = MSMFALCON_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 msmfalcon */
|
||||
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-msmfalcon-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,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.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);
|
||||
Loading…
Add table
Reference in a new issue