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OpenCloudOS-Kernel/drivers/soc/qcom/rpmpd.c

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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pm_domain.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <linux/soc/qcom/smd-rpm.h>
#include <dt-bindings/power/qcom-rpmpd.h>
#define domain_to_rpmpd(domain) container_of(domain, struct rpmpd, pd)
/* Resource types:
* RPMPD_X is X encoded as a little-endian, lower-case, ASCII string */
#define RPMPD_SMPA 0x61706d73
#define RPMPD_LDOA 0x616f646c
#define RPMPD_SMPB 0x62706d73
#define RPMPD_LDOB 0x626f646c
#define RPMPD_RWCX 0x78637772
#define RPMPD_RWMX 0x786d7772
#define RPMPD_RWLC 0x636c7772
#define RPMPD_RWLM 0x6d6c7772
#define RPMPD_RWSC 0x63737772
#define RPMPD_RWSM 0x6d737772
/* Operation Keys */
#define KEY_CORNER 0x6e726f63 /* corn */
#define KEY_ENABLE 0x6e657773 /* swen */
#define KEY_FLOOR_CORNER 0x636676 /* vfc */
#define KEY_FLOOR_LEVEL 0x6c6676 /* vfl */
#define KEY_LEVEL 0x6c766c76 /* vlvl */
#define MAX_CORNER_RPMPD_STATE 6
#define DEFINE_RPMPD_PAIR(_platform, _name, _active, r_type, r_key, \
r_id) \
static struct rpmpd _platform##_##_active; \
static struct rpmpd _platform##_##_name = { \
.pd = { .name = #_name, }, \
.peer = &_platform##_##_active, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_##r_key, \
}; \
static struct rpmpd _platform##_##_active = { \
.pd = { .name = #_active, }, \
.peer = &_platform##_##_name, \
.active_only = true, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_##r_key, \
}
#define DEFINE_RPMPD_CORNER(_platform, _name, r_type, r_id) \
static struct rpmpd _platform##_##_name = { \
.pd = { .name = #_name, }, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_CORNER, \
}
#define DEFINE_RPMPD_LEVEL(_platform, _name, r_type, r_id) \
static struct rpmpd _platform##_##_name = { \
.pd = { .name = #_name, }, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_LEVEL, \
}
#define DEFINE_RPMPD_VFC(_platform, _name, r_type, r_id) \
static struct rpmpd _platform##_##_name = { \
.pd = { .name = #_name, }, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_FLOOR_CORNER, \
}
#define DEFINE_RPMPD_VFL(_platform, _name, r_type, r_id) \
static struct rpmpd _platform##_##_name = { \
.pd = { .name = #_name, }, \
.res_type = RPMPD_##r_type, \
.res_id = r_id, \
.key = KEY_FLOOR_LEVEL, \
}
struct rpmpd_req {
__le32 key;
__le32 nbytes;
__le32 value;
};
struct rpmpd {
struct generic_pm_domain pd;
struct rpmpd *peer;
const bool active_only;
unsigned int corner;
bool enabled;
const char *res_name;
const int res_type;
const int res_id;
struct qcom_smd_rpm *rpm;
unsigned int max_state;
__le32 key;
};
struct rpmpd_desc {
struct rpmpd **rpmpds;
size_t num_pds;
unsigned int max_state;
};
static DEFINE_MUTEX(rpmpd_lock);
/* mdm9607 RPM Power Domains */
DEFINE_RPMPD_PAIR(mdm9607, vddcx, vddcx_ao, SMPA, LEVEL, 3);
DEFINE_RPMPD_VFL(mdm9607, vddcx_vfl, SMPA, 3);
DEFINE_RPMPD_PAIR(mdm9607, vddmx, vddmx_ao, LDOA, LEVEL, 12);
DEFINE_RPMPD_VFL(mdm9607, vddmx_vfl, LDOA, 12);
static struct rpmpd *mdm9607_rpmpds[] = {
[MDM9607_VDDCX] = &mdm9607_vddcx,
[MDM9607_VDDCX_AO] = &mdm9607_vddcx_ao,
[MDM9607_VDDCX_VFL] = &mdm9607_vddcx_vfl,
[MDM9607_VDDMX] = &mdm9607_vddmx,
[MDM9607_VDDMX_AO] = &mdm9607_vddmx_ao,
[MDM9607_VDDMX_VFL] = &mdm9607_vddmx_vfl,
};
static const struct rpmpd_desc mdm9607_desc = {
.rpmpds = mdm9607_rpmpds,
.num_pds = ARRAY_SIZE(mdm9607_rpmpds),
.max_state = RPM_SMD_LEVEL_TURBO,
};
/* msm8939 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8939, vddmd, vddmd_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_VFC(msm8939, vddmd_vfc, SMPA, 1);
DEFINE_RPMPD_PAIR(msm8939, vddcx, vddcx_ao, SMPA, CORNER, 2);
DEFINE_RPMPD_VFC(msm8939, vddcx_vfc, SMPA, 2);
DEFINE_RPMPD_PAIR(msm8939, vddmx, vddmx_ao, LDOA, CORNER, 3);
static struct rpmpd *msm8939_rpmpds[] = {
[MSM8939_VDDMDCX] = &msm8939_vddmd,
[MSM8939_VDDMDCX_AO] = &msm8939_vddmd_ao,
[MSM8939_VDDMDCX_VFC] = &msm8939_vddmd_vfc,
[MSM8939_VDDCX] = &msm8939_vddcx,
[MSM8939_VDDCX_AO] = &msm8939_vddcx_ao,
[MSM8939_VDDCX_VFC] = &msm8939_vddcx_vfc,
[MSM8939_VDDMX] = &msm8939_vddmx,
[MSM8939_VDDMX_AO] = &msm8939_vddmx_ao,
};
static const struct rpmpd_desc msm8939_desc = {
.rpmpds = msm8939_rpmpds,
.num_pds = ARRAY_SIZE(msm8939_rpmpds),
.max_state = MAX_CORNER_RPMPD_STATE,
};
/* msm8916 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8916, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8916, vddmx, vddmx_ao, LDOA, CORNER, 3);
DEFINE_RPMPD_VFC(msm8916, vddcx_vfc, SMPA, 1);
static struct rpmpd *msm8916_rpmpds[] = {
[MSM8916_VDDCX] = &msm8916_vddcx,
[MSM8916_VDDCX_AO] = &msm8916_vddcx_ao,
[MSM8916_VDDCX_VFC] = &msm8916_vddcx_vfc,
[MSM8916_VDDMX] = &msm8916_vddmx,
[MSM8916_VDDMX_AO] = &msm8916_vddmx_ao,
};
static const struct rpmpd_desc msm8916_desc = {
.rpmpds = msm8916_rpmpds,
.num_pds = ARRAY_SIZE(msm8916_rpmpds),
.max_state = MAX_CORNER_RPMPD_STATE,
};
/* msm8976 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8976, vddcx, vddcx_ao, SMPA, LEVEL, 2);
DEFINE_RPMPD_PAIR(msm8976, vddmx, vddmx_ao, SMPA, LEVEL, 6);
DEFINE_RPMPD_VFL(msm8976, vddcx_vfl, RWSC, 2);
DEFINE_RPMPD_VFL(msm8976, vddmx_vfl, RWSM, 6);
static struct rpmpd *msm8976_rpmpds[] = {
[MSM8976_VDDCX] = &msm8976_vddcx,
[MSM8976_VDDCX_AO] = &msm8976_vddcx_ao,
[MSM8976_VDDCX_VFL] = &msm8976_vddcx_vfl,
[MSM8976_VDDMX] = &msm8976_vddmx,
[MSM8976_VDDMX_AO] = &msm8976_vddmx_ao,
[MSM8976_VDDMX_VFL] = &msm8976_vddmx_vfl,
};
static const struct rpmpd_desc msm8976_desc = {
.rpmpds = msm8976_rpmpds,
.num_pds = ARRAY_SIZE(msm8976_rpmpds),
.max_state = RPM_SMD_LEVEL_TURBO_HIGH,
};
/* msm8994 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8994, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8994, vddmx, vddmx_ao, SMPA, CORNER, 2);
/* Attention! *Some* 8994 boards with pm8004 may use SMPC here! */
DEFINE_RPMPD_CORNER(msm8994, vddgfx, SMPB, 2);
DEFINE_RPMPD_VFC(msm8994, vddcx_vfc, SMPA, 1);
DEFINE_RPMPD_VFC(msm8994, vddgfx_vfc, SMPB, 2);
static struct rpmpd *msm8994_rpmpds[] = {
[MSM8994_VDDCX] = &msm8994_vddcx,
[MSM8994_VDDCX_AO] = &msm8994_vddcx_ao,
[MSM8994_VDDCX_VFC] = &msm8994_vddcx_vfc,
[MSM8994_VDDMX] = &msm8994_vddmx,
[MSM8994_VDDMX_AO] = &msm8994_vddmx_ao,
[MSM8994_VDDGFX] = &msm8994_vddgfx,
[MSM8994_VDDGFX_VFC] = &msm8994_vddgfx_vfc,
};
static const struct rpmpd_desc msm8994_desc = {
.rpmpds = msm8994_rpmpds,
.num_pds = ARRAY_SIZE(msm8994_rpmpds),
.max_state = MAX_CORNER_RPMPD_STATE,
};
/* msm8996 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8996, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8996, vddmx, vddmx_ao, SMPA, CORNER, 2);
DEFINE_RPMPD_CORNER(msm8996, vddsscx, LDOA, 26);
DEFINE_RPMPD_VFC(msm8996, vddcx_vfc, SMPA, 1);
DEFINE_RPMPD_VFC(msm8996, vddsscx_vfc, LDOA, 26);
static struct rpmpd *msm8996_rpmpds[] = {
[MSM8996_VDDCX] = &msm8996_vddcx,
[MSM8996_VDDCX_AO] = &msm8996_vddcx_ao,
[MSM8996_VDDCX_VFC] = &msm8996_vddcx_vfc,
[MSM8996_VDDMX] = &msm8996_vddmx,
[MSM8996_VDDMX_AO] = &msm8996_vddmx_ao,
[MSM8996_VDDSSCX] = &msm8996_vddsscx,
[MSM8996_VDDSSCX_VFC] = &msm8996_vddsscx_vfc,
};
static const struct rpmpd_desc msm8996_desc = {
.rpmpds = msm8996_rpmpds,
.num_pds = ARRAY_SIZE(msm8996_rpmpds),
.max_state = MAX_CORNER_RPMPD_STATE,
};
/* msm8998 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8998, vddcx, vddcx_ao, RWCX, LEVEL, 0);
DEFINE_RPMPD_VFL(msm8998, vddcx_vfl, RWCX, 0);
DEFINE_RPMPD_PAIR(msm8998, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(msm8998, vddmx_vfl, RWMX, 0);
DEFINE_RPMPD_LEVEL(msm8998, vdd_ssccx, RWSC, 0);
DEFINE_RPMPD_VFL(msm8998, vdd_ssccx_vfl, RWSC, 0);
DEFINE_RPMPD_LEVEL(msm8998, vdd_sscmx, RWSM, 0);
DEFINE_RPMPD_VFL(msm8998, vdd_sscmx_vfl, RWSM, 0);
static struct rpmpd *msm8998_rpmpds[] = {
[MSM8998_VDDCX] = &msm8998_vddcx,
[MSM8998_VDDCX_AO] = &msm8998_vddcx_ao,
[MSM8998_VDDCX_VFL] = &msm8998_vddcx_vfl,
[MSM8998_VDDMX] = &msm8998_vddmx,
[MSM8998_VDDMX_AO] = &msm8998_vddmx_ao,
[MSM8998_VDDMX_VFL] = &msm8998_vddmx_vfl,
[MSM8998_SSCCX] = &msm8998_vdd_ssccx,
[MSM8998_SSCCX_VFL] = &msm8998_vdd_ssccx_vfl,
[MSM8998_SSCMX] = &msm8998_vdd_sscmx,
[MSM8998_SSCMX_VFL] = &msm8998_vdd_sscmx_vfl,
};
static const struct rpmpd_desc msm8998_desc = {
.rpmpds = msm8998_rpmpds,
.num_pds = ARRAY_SIZE(msm8998_rpmpds),
.max_state = RPM_SMD_LEVEL_BINNING,
};
/* qcs404 RPM Power domains */
DEFINE_RPMPD_PAIR(qcs404, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(qcs404, vddmx_vfl, RWMX, 0);
DEFINE_RPMPD_LEVEL(qcs404, vdd_lpicx, RWLC, 0);
DEFINE_RPMPD_VFL(qcs404, vdd_lpicx_vfl, RWLC, 0);
DEFINE_RPMPD_LEVEL(qcs404, vdd_lpimx, RWLM, 0);
DEFINE_RPMPD_VFL(qcs404, vdd_lpimx_vfl, RWLM, 0);
static struct rpmpd *qcs404_rpmpds[] = {
[QCS404_VDDMX] = &qcs404_vddmx,
[QCS404_VDDMX_AO] = &qcs404_vddmx_ao,
[QCS404_VDDMX_VFL] = &qcs404_vddmx_vfl,
[QCS404_LPICX] = &qcs404_vdd_lpicx,
[QCS404_LPICX_VFL] = &qcs404_vdd_lpicx_vfl,
[QCS404_LPIMX] = &qcs404_vdd_lpimx,
[QCS404_LPIMX_VFL] = &qcs404_vdd_lpimx_vfl,
};
static const struct rpmpd_desc qcs404_desc = {
.rpmpds = qcs404_rpmpds,
.num_pds = ARRAY_SIZE(qcs404_rpmpds),
.max_state = RPM_SMD_LEVEL_BINNING,
};
/* sdm660 RPM Power domains */
DEFINE_RPMPD_PAIR(sdm660, vddcx, vddcx_ao, RWCX, LEVEL, 0);
DEFINE_RPMPD_VFL(sdm660, vddcx_vfl, RWCX, 0);
DEFINE_RPMPD_PAIR(sdm660, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(sdm660, vddmx_vfl, RWMX, 0);
DEFINE_RPMPD_LEVEL(sdm660, vdd_ssccx, RWLC, 0);
DEFINE_RPMPD_VFL(sdm660, vdd_ssccx_vfl, RWLC, 0);
DEFINE_RPMPD_LEVEL(sdm660, vdd_sscmx, RWLM, 0);
DEFINE_RPMPD_VFL(sdm660, vdd_sscmx_vfl, RWLM, 0);
static struct rpmpd *sdm660_rpmpds[] = {
[SDM660_VDDCX] = &sdm660_vddcx,
[SDM660_VDDCX_AO] = &sdm660_vddcx_ao,
[SDM660_VDDCX_VFL] = &sdm660_vddcx_vfl,
[SDM660_VDDMX] = &sdm660_vddmx,
[SDM660_VDDMX_AO] = &sdm660_vddmx_ao,
[SDM660_VDDMX_VFL] = &sdm660_vddmx_vfl,
[SDM660_SSCCX] = &sdm660_vdd_ssccx,
[SDM660_SSCCX_VFL] = &sdm660_vdd_ssccx_vfl,
[SDM660_SSCMX] = &sdm660_vdd_sscmx,
[SDM660_SSCMX_VFL] = &sdm660_vdd_sscmx_vfl,
};
static const struct rpmpd_desc sdm660_desc = {
.rpmpds = sdm660_rpmpds,
.num_pds = ARRAY_SIZE(sdm660_rpmpds),
.max_state = RPM_SMD_LEVEL_TURBO,
};
static const struct of_device_id rpmpd_match_table[] = {
{ .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
{ .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
{ .compatible = "qcom,msm8939-rpmpd", .data = &msm8939_desc },
{ .compatible = "qcom,msm8976-rpmpd", .data = &msm8976_desc },
{ .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
{ .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
{ .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
{ .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
{ .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
{ }
};
MODULE_DEVICE_TABLE(of, rpmpd_match_table);
static int rpmpd_send_enable(struct rpmpd *pd, bool enable)
{
struct rpmpd_req req = {
.key = KEY_ENABLE,
.nbytes = cpu_to_le32(sizeof(u32)),
.value = cpu_to_le32(enable),
};
return qcom_rpm_smd_write(pd->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
pd->res_type, pd->res_id, &req, sizeof(req));
}
static int rpmpd_send_corner(struct rpmpd *pd, int state, unsigned int corner)
{
struct rpmpd_req req = {
.key = pd->key,
.nbytes = cpu_to_le32(sizeof(u32)),
.value = cpu_to_le32(corner),
};
return qcom_rpm_smd_write(pd->rpm, state, pd->res_type, pd->res_id,
&req, sizeof(req));
};
static void to_active_sleep(struct rpmpd *pd, unsigned int corner,
unsigned int *active, unsigned int *sleep)
{
*active = corner;
if (pd->active_only)
*sleep = 0;
else
*sleep = *active;
}
static int rpmpd_aggregate_corner(struct rpmpd *pd)
{
int ret;
struct rpmpd *peer = pd->peer;
unsigned int active_corner, sleep_corner;
unsigned int this_active_corner = 0, this_sleep_corner = 0;
unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
to_active_sleep(pd, pd->corner, &this_active_corner, &this_sleep_corner);
if (peer && peer->enabled)
to_active_sleep(peer, peer->corner, &peer_active_corner,
&peer_sleep_corner);
active_corner = max(this_active_corner, peer_active_corner);
ret = rpmpd_send_corner(pd, QCOM_SMD_RPM_ACTIVE_STATE, active_corner);
if (ret)
return ret;
sleep_corner = max(this_sleep_corner, peer_sleep_corner);
return rpmpd_send_corner(pd, QCOM_SMD_RPM_SLEEP_STATE, sleep_corner);
}
static int rpmpd_power_on(struct generic_pm_domain *domain)
{
int ret;
struct rpmpd *pd = domain_to_rpmpd(domain);
mutex_lock(&rpmpd_lock);
ret = rpmpd_send_enable(pd, true);
if (ret)
goto out;
pd->enabled = true;
if (pd->corner)
ret = rpmpd_aggregate_corner(pd);
out:
mutex_unlock(&rpmpd_lock);
return ret;
}
static int rpmpd_power_off(struct generic_pm_domain *domain)
{
int ret;
struct rpmpd *pd = domain_to_rpmpd(domain);
mutex_lock(&rpmpd_lock);
ret = rpmpd_send_enable(pd, false);
if (!ret)
pd->enabled = false;
mutex_unlock(&rpmpd_lock);
return ret;
}
static int rpmpd_set_performance(struct generic_pm_domain *domain,
unsigned int state)
{
int ret = 0;
struct rpmpd *pd = domain_to_rpmpd(domain);
if (state > pd->max_state)
state = pd->max_state;
mutex_lock(&rpmpd_lock);
pd->corner = state;
/* Always send updates for vfc and vfl */
if (!pd->enabled && pd->key != KEY_FLOOR_CORNER &&
pd->key != KEY_FLOOR_LEVEL)
goto out;
ret = rpmpd_aggregate_corner(pd);
out:
mutex_unlock(&rpmpd_lock);
return ret;
}
static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
struct dev_pm_opp *opp)
{
return dev_pm_opp_get_level(opp);
}
static int rpmpd_probe(struct platform_device *pdev)
{
int i;
size_t num;
struct genpd_onecell_data *data;
struct qcom_smd_rpm *rpm;
struct rpmpd **rpmpds;
const struct rpmpd_desc *desc;
rpm = dev_get_drvdata(pdev->dev.parent);
if (!rpm) {
dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
return -ENODEV;
}
desc = of_device_get_match_data(&pdev->dev);
if (!desc)
return -EINVAL;
rpmpds = desc->rpmpds;
num = desc->num_pds;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains),
GFP_KERNEL);
data->num_domains = num;
for (i = 0; i < num; i++) {
if (!rpmpds[i]) {
dev_warn(&pdev->dev, "rpmpds[] with empty entry at index=%d\n",
i);
continue;
}
rpmpds[i]->rpm = rpm;
rpmpds[i]->max_state = desc->max_state;
rpmpds[i]->pd.power_off = rpmpd_power_off;
rpmpds[i]->pd.power_on = rpmpd_power_on;
rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
pm_genpd_init(&rpmpds[i]->pd, NULL, true);
data->domains[i] = &rpmpds[i]->pd;
}
return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
}
static struct platform_driver rpmpd_driver = {
.driver = {
.name = "qcom-rpmpd",
.of_match_table = rpmpd_match_table,
.suppress_bind_attrs = true,
},
.probe = rpmpd_probe,
};
static int __init rpmpd_init(void)
{
return platform_driver_register(&rpmpd_driver);
}
core_initcall(rpmpd_init);
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPM Power Domain Driver");
MODULE_LICENSE("GPL v2");
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