// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/
#include <linux/cleanup.h>
#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/slab.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <soc/qcom/cmd-db.h>
#include <soc/qcom/rpmh.h>
#include <dt-bindings/power/qcom-rpmpd.h>
#include <dt-bindings/power/qcom,rpmhpd.h>
#define domain_to_rpmhpd(domain) container_of(domain, struct rpmhpd, pd)
#define RPMH_ARC_MAX_LEVELS 16
/**
* struct rpmhpd - top level RPMh power domain resource data structure
* @dev: rpmh power domain controller device
* @pd: generic_pm_domain corresponding to the power domain
* @parent: generic_pm_domain corresponding to the parent's power domain
* @peer: A peer power domain in case Active only Voting is
* supported
* @active_only: True if it represents an Active only peer
* @corner: current corner
* @active_corner: current active corner
* @enable_corner: lowest non-zero corner
* @level: An array of level (vlvl) to corner (hlvl) mappings
* derived from cmd-db
* @level_count: Number of levels supported by the power domain. max
* being 16 (0 - 15)
* @enabled: true if the power domain is enabled
* @res_name: Resource name used for cmd-db lookup
* @addr: Resource address as looped up using resource name from
* cmd-db
* @state_synced: Indicator that sync_state has been invoked for the rpmhpd resource
* @skip_retention_level: Indicate that retention level should not be used for the power domain
*/
struct rpmhpd {
struct device *dev;
struct generic_pm_domain pd;
struct generic_pm_domain *parent;
struct rpmhpd *peer;
const bool active_only;
unsigned int corner;
unsigned int active_corner;
unsigned int enable_corner;
u32 level[RPMH_ARC_MAX_LEVELS];
size_t level_count;
bool enabled;
const char *res_name;
u32 addr;
bool state_synced;
bool skip_retention_level;
};
struct rpmhpd_desc {
struct rpmhpd **rpmhpds;
size_t num_pds;
};
static DEFINE_MUTEX(rpmhpd_lock);
/* RPMH powerdomains */
static struct rpmhpd cx_ao;
static struct rpmhpd mx;
static struct rpmhpd mx_ao;
static struct rpmhpd cx = {
.pd = { .name = "cx", },
.peer = &cx_ao,
.res_name = "cx.lvl",
};
static struct rpmhpd cx_ao = {
.pd = { .name = "cx_ao", },
.active_only = true,
.peer = &cx,
.res_name = "cx.lvl",
};
static struct rpmhpd cx_ao_w_mx_parent;
static struct rpmhpd cx_w_mx_parent = {
.pd = { .name = "cx", },
.peer = &cx_ao_w_mx_parent,
.parent = &mx.pd,
.res_name = "cx.lvl",
};
static struct rpmhpd cx_ao_w_mx_parent = {
.pd = { .name = "cx_ao", },
.active_only = true,
.peer = &cx_w_mx_parent,
.parent = &mx_ao.pd,
.res_name = "cx.lvl",
};
static struct rpmhpd ebi = {
.pd = { .name = "ebi", },
.res_name = "ebi.lvl",
};
static struct rpmhpd gfx = {
.pd = { .name = "gfx", },
.res_name = "gfx.lvl",
};
static struct rpmhpd lcx = {
.pd = { .name = "lcx", },
.res_name = "lcx.lvl",
};
static struct rpmhpd lmx = {
.pd = { .name = "lmx", },
.res_name = "lmx.lvl",
};
static struct rpmhpd mmcx_ao;
static struct rpmhpd mmcx = {
.pd = { .name = "mmcx", },
.peer = &mmcx_ao,
.res_name = "mmcx.lvl",
};
static struct rpmhpd mmcx_ao = {
.pd = { .name = "mmcx_ao", },
.active_only = true,
.peer = &mmcx,
.res_name = "mmcx.lvl",
};
static struct rpmhpd mmcx_ao_w_cx_parent;
static struct rpmhpd mmcx_w_cx_parent = {
.pd = { .name = "mmcx", },
.peer = &mmcx_ao_w_cx_parent,
.parent = &cx.pd,
.res_name = "mmcx.lvl",
};
static struct rpmhpd mmcx_ao_w_cx_parent = {
.pd = { .name = "mmcx_ao", },
.active_only = true,
.peer = &mmcx_w_cx_parent,
.parent = &cx_ao.pd,
.res_name = "mmcx.lvl",
};
static struct rpmhpd mss = {
.pd = { .name = "mss", },
.res_name = "mss.lvl",
};
static struct rpmhpd mx_ao;
static struct rpmhpd mx = {
.pd = { .name = "mx", },
.peer = &mx_ao,
.res_name = "mx.lvl",
};
static struct rpmhpd mx_ao = {
.pd = { .name = "mx_ao", },
.active_only = true,
.peer = &mx,
.res_name = "mx.lvl",
};
static struct rpmhpd mxc_ao;
static struct rpmhpd mxc = {
.pd = { .name = "mxc", },
.peer = &mxc_ao,
.res_name = "mxc.lvl",
.skip_retention_level = true,
};
static struct rpmhpd mxc_ao = {
.pd = { .name = "mxc_ao", },
.active_only = true,
.peer = &mxc,
.res_name = "mxc.lvl",
.skip_retention_level = true,
};
static struct rpmhpd nsp = {
.pd = { .name = "nsp", },
.res_name = "nsp.lvl",
};
static struct rpmhpd nsp0 = {
.pd = { .name = "nsp0", },
.res_name = "nsp0.lvl",
};
static struct rpmhpd nsp1 = {
.pd = { .name = "nsp1", },
.res_name = "nsp1.lvl",
};
static struct rpmhpd nsp2 = {
.pd = { .name = "nsp2", },
.res_name = "nsp2.lvl",
};
static struct rpmhpd qphy = {
.pd = { .name = "qphy", },
.res_name = "qphy.lvl",
};
static struct rpmhpd gmxc = {
.pd = { .name = "gmxc", },
.res_name = "gmxc.lvl",
};
/* SA8540P RPMH powerdomains */
static struct rpmhpd *sa8540p_rpmhpds[] = {
[SC8280XP_CX] = &cx,
[SC8280XP_CX_AO] = &cx_ao,
[SC8280XP_EBI] = &ebi,
[SC8280XP_LCX] = &lcx,
[SC8280XP_LMX] = &lmx,
[SC8280XP_MMCX] = &mmcx,
[SC8280XP_MMCX_AO] = &mmcx_ao,
[SC8280XP_MX] = &mx,
[SC8280XP_MX_AO] = &mx_ao,
[SC8280XP_NSP] = &nsp,
};
static const struct rpmhpd_desc sa8540p_desc = {
.rpmhpds = sa8540p_rpmhpds,
.num_pds = ARRAY_SIZE(sa8540p_rpmhpds),
};
/* SA8775P RPMH power domains */
static struct rpmhpd *sa8775p_rpmhpds[] = {
[SA8775P_CX] = &cx,
[SA8775P_CX_AO] = &cx_ao,
[SA8775P_EBI] = &ebi,
[SA8775P_GFX] = &gfx,
[SA8775P_LCX] = &lcx,
[SA8775P_LMX] = &lmx,
[SA8775P_MMCX] = &mmcx,
[SA8775P_MMCX_AO] = &mmcx_ao,
[SA8775P_MXC] = &mxc,
[SA8775P_MXC_AO] = &mxc_ao,
[SA8775P_MX] = &mx,
[SA8775P_MX_AO] = &mx_ao,
[SA8775P_NSP0] = &nsp0,
[SA8775P_NSP1] = &nsp1,
};
static const struct rpmhpd_desc sa8775p_desc = {
.rpmhpds = sa8775p_rpmhpds,
.num_pds = ARRAY_SIZE(sa8775p_rpmhpds),
};
/* SDM670 RPMH powerdomains */
static struct rpmhpd *sdm670_rpmhpds[] = {
[SDM670_CX] = &cx_w_mx_parent,
[SDM670_CX_AO] = &cx_ao_w_mx_parent,
[SDM670_GFX] = &gfx,
[SDM670_LCX] = &lcx,
[SDM670_LMX] = &lmx,
[SDM670_MSS] = &mss,
[SDM670_MX] = &mx,
[SDM670_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sdm670_desc = {
.rpmhpds = sdm670_rpmhpds,
.num_pds = ARRAY_SIZE(sdm670_rpmhpds),
};
/* SDM845 RPMH powerdomains */
static struct rpmhpd *sdm845_rpmhpds[] = {
[SDM845_CX] = &cx_w_mx_parent,
[SDM845_CX_AO] = &cx_ao_w_mx_parent,
[SDM845_EBI] = &ebi,
[SDM845_GFX] = &gfx,
[SDM845_LCX] = &lcx,
[SDM845_LMX] = &lmx,
[SDM845_MSS] = &mss,
[SDM845_MX] = &mx,
[SDM845_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sdm845_desc = {
.rpmhpds = sdm845_rpmhpds,
.num_pds = ARRAY_SIZE(sdm845_rpmhpds),
};
/* SDX55 RPMH powerdomains */
static struct rpmhpd *sdx55_rpmhpds[] = {
[SDX55_CX] = &cx_w_mx_parent,
[SDX55_MSS] = &mss,
[SDX55_MX] = &mx,
};
static const struct rpmhpd_desc sdx55_desc = {
.rpmhpds = sdx55_rpmhpds,
.num_pds = ARRAY_SIZE(sdx55_rpmhpds),
};
/* SDX65 RPMH powerdomains */
static struct rpmhpd *sdx65_rpmhpds[] = {
[SDX65_CX] = &cx_w_mx_parent,
[SDX65_CX_AO] = &cx_ao_w_mx_parent,
[SDX65_MSS] = &mss,
[SDX65_MX] = &mx,
[SDX65_MX_AO] = &mx_ao,
[SDX65_MXC] = &mxc,
};
static const struct rpmhpd_desc sdx65_desc = {
.rpmhpds = sdx65_rpmhpds,
.num_pds = ARRAY_SIZE(sdx65_rpmhpds),
};
/* SDX75 RPMH powerdomains */
static struct rpmhpd *sdx75_rpmhpds[] = {
[RPMHPD_CX] = &cx,
[RPMHPD_CX_AO] = &cx_ao,
[RPMHPD_MSS] = &mss,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MXC] = &mxc,
};
static const struct rpmhpd_desc sdx75_desc = {
.rpmhpds = sdx75_rpmhpds,
.num_pds = ARRAY_SIZE(sdx75_rpmhpds),
};
/* SM6350 RPMH powerdomains */
static struct rpmhpd *sm6350_rpmhpds[] = {
[SM6350_CX] = &cx_w_mx_parent,
[SM6350_GFX] = &gfx,
[SM6350_LCX] = &lcx,
[SM6350_LMX] = &lmx,
[SM6350_MSS] = &mss,
[SM6350_MX] = &mx,
};
static const struct rpmhpd_desc sm6350_desc = {
.rpmhpds = sm6350_rpmhpds,
.num_pds = ARRAY_SIZE(sm6350_rpmhpds),
};
/* SM7150 RPMH powerdomains */
static struct rpmhpd *sm7150_rpmhpds[] = {
[RPMHPD_CX] = &cx_w_mx_parent,
[RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MSS] = &mss,
};
static const struct rpmhpd_desc sm7150_desc = {
.rpmhpds = sm7150_rpmhpds,
.num_pds = ARRAY_SIZE(sm7150_rpmhpds),
};
/* SM8150 RPMH powerdomains */
static struct rpmhpd *sm8150_rpmhpds[] = {
[SM8150_CX] = &cx_w_mx_parent,
[SM8150_CX_AO] = &cx_ao_w_mx_parent,
[SM8150_EBI] = &ebi,
[SM8150_GFX] = &gfx,
[SM8150_LCX] = &lcx,
[SM8150_LMX] = &lmx,
[SM8150_MMCX] = &mmcx,
[SM8150_MMCX_AO] = &mmcx_ao,
[SM8150_MSS] = &mss,
[SM8150_MX] = &mx,
[SM8150_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sm8150_desc = {
.rpmhpds = sm8150_rpmhpds,
.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
};
static struct rpmhpd *sa8155p_rpmhpds[] = {
[SA8155P_CX] = &cx_w_mx_parent,
[SA8155P_CX_AO] = &cx_ao_w_mx_parent,
[SA8155P_EBI] = &ebi,
[SA8155P_GFX] = &gfx,
[SA8155P_MSS] = &mss,
[SA8155P_MX] = &mx,
[SA8155P_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sa8155p_desc = {
.rpmhpds = sa8155p_rpmhpds,
.num_pds = ARRAY_SIZE(sa8155p_rpmhpds),
};
/* SM8250 RPMH powerdomains */
static struct rpmhpd *sm8250_rpmhpds[] = {
[RPMHPD_CX] = &cx_w_mx_parent,
[RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx,
[RPMHPD_MMCX_AO] = &mmcx_ao,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sm8250_desc = {
.rpmhpds = sm8250_rpmhpds,
.num_pds = ARRAY_SIZE(sm8250_rpmhpds),
};
/* SM8350 Power domains */
static struct rpmhpd *sm8350_rpmhpds[] = {
[RPMHPD_CX] = &cx_w_mx_parent,
[RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx,
[RPMHPD_MMCX_AO] = &mmcx_ao,
[RPMHPD_MSS] = &mss,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MXC] = &mxc,
[RPMHPD_MXC_AO] = &mxc_ao,
};
static const struct rpmhpd_desc sm8350_desc = {
.rpmhpds = sm8350_rpmhpds,
.num_pds = ARRAY_SIZE(sm8350_rpmhpds),
};
/* SM8450 RPMH powerdomains */
static struct rpmhpd *sm8450_rpmhpds[] = {
[RPMHPD_CX] = &cx,
[RPMHPD_CX_AO] = &cx_ao,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx_w_cx_parent,
[RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
[RPMHPD_MSS] = &mss,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MXC] = &mxc,
[RPMHPD_MXC_AO] = &mxc_ao,
};
static const struct rpmhpd_desc sm8450_desc = {
.rpmhpds = sm8450_rpmhpds,
.num_pds = ARRAY_SIZE(sm8450_rpmhpds),
};
/* SM8550 RPMH powerdomains */
static struct rpmhpd *sm8550_rpmhpds[] = {
[RPMHPD_CX] = &cx,
[RPMHPD_CX_AO] = &cx_ao,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx_w_cx_parent,
[RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
[RPMHPD_MSS] = &mss,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MXC] = &mxc,
[RPMHPD_MXC_AO] = &mxc_ao,
[RPMHPD_NSP] = &nsp,
};
static const struct rpmhpd_desc sm8550_desc = {
.rpmhpds = sm8550_rpmhpds,
.num_pds = ARRAY_SIZE(sm8550_rpmhpds),
};
/* SM8650 RPMH powerdomains */
static struct rpmhpd *sm8650_rpmhpds[] = {
[RPMHPD_CX] = &cx,
[RPMHPD_CX_AO] = &cx_ao,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx_w_cx_parent,
[RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
[RPMHPD_MSS] = &mss,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_MXC] = &mxc,
[RPMHPD_MXC_AO] = &mxc_ao,
[RPMHPD_NSP] = &nsp,
[RPMHPD_NSP2] = &nsp2,
};
static const struct rpmhpd_desc sm8650_desc = {
.rpmhpds = sm8650_rpmhpds,
.num_pds = ARRAY_SIZE(sm8650_rpmhpds),
};
/* QDU1000/QRU1000 RPMH powerdomains */
static struct rpmhpd *qdu1000_rpmhpds[] = {
[QDU1000_CX] = &cx,
[QDU1000_EBI] = &ebi,
[QDU1000_MSS] = &mss,
[QDU1000_MX] = &mx,
};
static const struct rpmhpd_desc qdu1000_desc = {
.rpmhpds = qdu1000_rpmhpds,
.num_pds = ARRAY_SIZE(qdu1000_rpmhpds),
};
/* SC7180 RPMH powerdomains */
static struct rpmhpd *sc7180_rpmhpds[] = {
[SC7180_CX] = &cx_w_mx_parent,
[SC7180_CX_AO] = &cx_ao_w_mx_parent,
[SC7180_GFX] = &gfx,
[SC7180_LCX] = &lcx,
[SC7180_LMX] = &lmx,
[SC7180_MSS] = &mss,
[SC7180_MX] = &mx,
[SC7180_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sc7180_desc = {
.rpmhpds = sc7180_rpmhpds,
.num_pds = ARRAY_SIZE(sc7180_rpmhpds),
};
/* SC7280 RPMH powerdomains */
static struct rpmhpd *sc7280_rpmhpds[] = {
[SC7280_CX] = &cx,
[SC7280_CX_AO] = &cx_ao,
[SC7280_EBI] = &ebi,
[SC7280_GFX] = &gfx,
[SC7280_LCX] = &lcx,
[SC7280_LMX] = &lmx,
[SC7280_MSS] = &mss,
[SC7280_MX] = &mx,
[SC7280_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sc7280_desc = {
.rpmhpds = sc7280_rpmhpds,
.num_pds = ARRAY_SIZE(sc7280_rpmhpds),
};
/* SC8180x RPMH powerdomains */
static struct rpmhpd *sc8180x_rpmhpds[] = {
[SC8180X_CX] = &cx_w_mx_parent,
[SC8180X_CX_AO] = &cx_ao_w_mx_parent,
[SC8180X_EBI] = &ebi,
[SC8180X_GFX] = &gfx,
[SC8180X_LCX] = &lcx,
[SC8180X_LMX] = &lmx,
[SC8180X_MMCX] = &mmcx,
[SC8180X_MMCX_AO] = &mmcx_ao,
[SC8180X_MSS] = &mss,
[SC8180X_MX] = &mx,
[SC8180X_MX_AO] = &mx_ao,
};
static const struct rpmhpd_desc sc8180x_desc = {
.rpmhpds = sc8180x_rpmhpds,
.num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
};
/* SC8280xp RPMH powerdomains */
static struct rpmhpd *sc8280xp_rpmhpds[] = {
[SC8280XP_CX] = &cx,
[SC8280XP_CX_AO] = &cx_ao,
[SC8280XP_EBI] = &ebi,
[SC8280XP_GFX] = &gfx,
[SC8280XP_LCX] = &lcx,
[SC8280XP_LMX] = &lmx,
[SC8280XP_MMCX] = &mmcx,
[SC8280XP_MMCX_AO] = &mmcx_ao,
[SC8280XP_MX] = &mx,
[SC8280XP_MX_AO] = &mx_ao,
[SC8280XP_NSP] = &nsp,
[SC8280XP_QPHY] = &qphy,
};
static const struct rpmhpd_desc sc8280xp_desc = {
.rpmhpds = sc8280xp_rpmhpds,
.num_pds = ARRAY_SIZE(sc8280xp_rpmhpds),
};
/* X1E80100 RPMH powerdomains */
static struct rpmhpd *x1e80100_rpmhpds[] = {
[RPMHPD_CX] = &cx,
[RPMHPD_CX_AO] = &cx_ao,
[RPMHPD_EBI] = &ebi,
[RPMHPD_GFX] = &gfx,
[RPMHPD_LCX] = &lcx,
[RPMHPD_LMX] = &lmx,
[RPMHPD_MMCX] = &mmcx,
[RPMHPD_MMCX_AO] = &mmcx_ao,
[RPMHPD_MX] = &mx,
[RPMHPD_MX_AO] = &mx_ao,
[RPMHPD_NSP] = &nsp,
[RPMHPD_MXC] = &mxc,
[RPMHPD_GMXC] = &gmxc,
};
static const struct rpmhpd_desc x1e80100_desc = {
.rpmhpds = x1e80100_rpmhpds,
.num_pds = ARRAY_SIZE(x1e80100_rpmhpds),
};
static const struct of_device_id rpmhpd_match_table[] = {
{ .compatible = "qcom,qdu1000-rpmhpd", .data = &qdu1000_desc },
{ .compatible = "qcom,sa8155p-rpmhpd", .data = &sa8155p_desc },
{ .compatible = "qcom,sa8540p-rpmhpd", .data = &sa8540p_desc },
{ .compatible = "qcom,sa8775p-rpmhpd", .data = &sa8775p_desc },
{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
{ .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
{ .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
{ .compatible = "qcom,sc8280xp-rpmhpd", .data = &sc8280xp_desc },
{ .compatible = "qcom,sdm670-rpmhpd", .data = &sdm670_desc },
{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
{ .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
{ .compatible = "qcom,sdx65-rpmhpd", .data = &sdx65_desc},
{ .compatible = "qcom,sdx75-rpmhpd", .data = &sdx75_desc},
{ .compatible = "qcom,sm6350-rpmhpd", .data = &sm6350_desc },
{ .compatible = "qcom,sm7150-rpmhpd", .data = &sm7150_desc },
{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
{ .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
{ .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
{ .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
{ .compatible = "qcom,sm8550-rpmhpd", .data = &sm8550_desc },
{ .compatible = "qcom,sm8650-rpmhpd", .data = &sm8650_desc },
{ .compatible = "qcom,x1e80100-rpmhpd", .data = &x1e80100_desc },
{ }
};
MODULE_DEVICE_TABLE(of, rpmhpd_match_table);
static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
unsigned int corner, bool sync)
{
struct tcs_cmd cmd = {
.addr = pd->addr,
.data = corner,
};
/*
* Wait for an ack only when we are increasing the
* perf state of the power domain
*/
if (sync)
return rpmh_write(pd->dev, state, &cmd, 1);
else
return rpmh_write_async(pd->dev, state, &cmd, 1);
}
static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
unsigned int *active, unsigned int *sleep)
{
*active = corner;
if (pd->active_only)
*sleep = 0;
else
*sleep = *active;
}
/*
* This function is used to aggregate the votes across the active only
* resources and its peers. The aggregated votes are sent to RPMh as
* ACTIVE_ONLY votes (which take effect immediately), as WAKE_ONLY votes
* (applied by RPMh on system wakeup) and as SLEEP votes (applied by RPMh
* on system sleep).
* We send ACTIVE_ONLY votes for resources without any peers. For others,
* which have an active only peer, all 3 votes are sent.
*/
static int rpmhpd_aggregate_corner(struct rpmhpd *pd, unsigned int corner)
{
int ret;
struct rpmhpd *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;
unsigned int peer_enabled_corner;
if (pd->state_synced) {
to_active_sleep(pd, corner, &this_active_corner, &this_sleep_corner);
} else {
/* Clamp to highest corner if sync_state hasn't happened */
this_active_corner = pd->level_count - 1;
this_sleep_corner = pd->level_count - 1;
}
if (peer && peer->enabled) {
peer_enabled_corner = max(peer->corner, peer->enable_corner);
to_active_sleep(peer, peer_enabled_corner, &peer_active_corner,
&peer_sleep_corner);
}
active_corner = max(this_active_corner, peer_active_corner);
ret = rpmhpd_send_corner(pd, RPMH_ACTIVE_ONLY_STATE, active_corner,
active_corner > pd->active_corner);
if (ret)
return ret;
pd->active_corner = active_corner;
if (peer) {
peer->active_corner = active_corner;
ret = rpmhpd_send_corner(pd, RPMH_WAKE_ONLY_STATE,
active_corner, false);
if (ret)
return ret;
sleep_corner = max(this_sleep_corner, peer_sleep_corner);
return rpmhpd_send_corner(pd, RPMH_SLEEP_STATE, sleep_corner,
false);
}
return ret;
}
static int rpmhpd_power_on(struct generic_pm_domain *domain)
{
struct rpmhpd *pd = domain_to_rpmhpd(domain);
unsigned int corner;
int ret;
mutex_lock(&rpmhpd_lock);
corner = max(pd->corner, pd->enable_corner);
ret = rpmhpd_aggregate_corner(pd, corner);
if (!ret)
pd->enabled = true;
mutex_unlock(&rpmhpd_lock);
return ret;
}
static int rpmhpd_power_off(struct generic_pm_domain *domain)
{
struct rpmhpd *pd = domain_to_rpmhpd(domain);
int ret;
mutex_lock(&rpmhpd_lock);
ret = rpmhpd_aggregate_corner(pd, 0);
if (!ret)
pd->enabled = false;
mutex_unlock(&rpmhpd_lock);
return ret;
}
static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
unsigned int level)
{
struct rpmhpd *pd = domain_to_rpmhpd(domain);
int ret, i;
guard(mutex)(&rpmhpd_lock);
for (i = 0; i < pd->level_count; i++)
if (level <= pd->level[i])
break;
/*
* If the level requested is more than that supported by the
* max corner, just set it to max anyway.
*/
if (i == pd->level_count)
i--;
if (pd->enabled) {
/* Ensure that the domain isn't turn off */
if (i < pd->enable_corner)
i = pd->enable_corner;
ret = rpmhpd_aggregate_corner(pd, i);
if (ret)
return ret;
}
pd->corner = i;
return 0;
}
static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)
{
int i;
const u16 *buf;
buf = cmd_db_read_aux_data(rpmhpd->res_name, &rpmhpd->level_count);
if (IS_ERR(buf))
return PTR_ERR(buf);
/* 2 bytes used for each command DB aux data entry */
rpmhpd->level_count >>= 1;
if (rpmhpd->level_count > RPMH_ARC_MAX_LEVELS)
return -EINVAL;
for (i = 0; i < rpmhpd->level_count; i++) {
if (rpmhpd->skip_retention_level && buf[i] == RPMH_REGULATOR_LEVEL_RETENTION)
continue;
rpmhpd->level[i] = buf[i];
/* Remember the first corner with non-zero level */
if (!rpmhpd->level[rpmhpd->enable_corner] && rpmhpd->level[i])
rpmhpd->enable_corner = i;
/*
* The AUX data may be zero padded. These 0 valued entries at
* the end of the map must be ignored.
*/
if (i > 0 && rpmhpd->level[i] == 0) {
rpmhpd->level_count = i;
break;
}
pr_debug("%s: ARC hlvl=%2d --> vlvl=%4u\n", rpmhpd->res_name, i,
rpmhpd->level[i]);
}
return 0;
}
static int rpmhpd_probe(struct platform_device *pdev)
{
int i, ret;
size_t num_pds;
struct device *dev = &pdev->dev;
struct genpd_onecell_data *data;
struct rpmhpd **rpmhpds;
const struct rpmhpd_desc *desc;
desc = of_device_get_match_data(dev);
if (!desc)
return -EINVAL;
rpmhpds = desc->rpmhpds;
num_pds = desc->num_pds;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->domains = devm_kcalloc(dev, num_pds, sizeof(*data->domains),
GFP_KERNEL);
if (!data->domains)
return -ENOMEM;
data->num_domains = num_pds;
for (i = 0; i < num_pds; i++) {
if (!rpmhpds[i])
continue;
rpmhpds[i]->dev = dev;
rpmhpds[i]->addr = cmd_db_read_addr(rpmhpds[i]->res_name);
if (!rpmhpds[i]->addr) {
dev_err(dev, "Could not find RPMh address for resource %s\n",
rpmhpds[i]->res_name);
return -ENODEV;
}
ret = cmd_db_read_slave_id(rpmhpds[i]->res_name);
if (ret != CMD_DB_HW_ARC) {
dev_err(dev, "RPMh slave ID mismatch\n");
return -EINVAL;
}
ret = rpmhpd_update_level_mapping(rpmhpds[i]);
if (ret)
return ret;
rpmhpds[i]->pd.power_off = rpmhpd_power_off;
rpmhpds[i]->pd.power_on = rpmhpd_power_on;
rpmhpds[i]->pd.set_performance_state = rpmhpd_set_performance_state;
pm_genpd_init(&rpmhpds[i]->pd, NULL, true);
data->domains[i] = &rpmhpds[i]->pd;
}
/* Add subdomains */
for (i = 0; i < num_pds; i++) {
if (!rpmhpds[i])
continue;
if (rpmhpds[i]->parent)
pm_genpd_add_subdomain(rpmhpds[i]->parent,
&rpmhpds[i]->pd);
}
return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
}
static void rpmhpd_sync_state(struct device *dev)
{
const struct rpmhpd_desc *desc = of_device_get_match_data(dev);
struct rpmhpd **rpmhpds = desc->rpmhpds;
unsigned int corner;
struct rpmhpd *pd;
unsigned int i;
int ret;
mutex_lock(&rpmhpd_lock);
for (i = 0; i < desc->num_pds; i++) {
pd = rpmhpds[i];
if (!pd)
continue;
pd->state_synced = true;
if (pd->enabled)
corner = max(pd->corner, pd->enable_corner);
else
corner = 0;
ret = rpmhpd_aggregate_corner(pd, corner);
if (ret)
dev_err(dev, "failed to sync %s\n", pd->res_name);
}
mutex_unlock(&rpmhpd_lock);
}
static struct platform_driver rpmhpd_driver = {
.driver = {
.name = "qcom-rpmhpd",
.of_match_table = rpmhpd_match_table,
.suppress_bind_attrs = true,
.sync_state = rpmhpd_sync_state,
},
.probe = rpmhpd_probe,
};
static int __init rpmhpd_init(void)
{
return platform_driver_register(&rpmhpd_driver);
}
core_initcall(rpmhpd_init);
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
MODULE_LICENSE("GPL v2");
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