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![Rajendra Nayak](/assets/img/avatar_default.png)
Sort all power-domain defines and the SoC specific lists in alphabetical order for better readability. No functional changes. Signed-off-by: Rajendra Nayak <quic_rjendra@quicinc.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/1639063917-9011-5-git-send-email-quic_rjendra@quicinc.com
660 lines
15 KiB
C
660 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/pm_domain.h>
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#include <linux/slab.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 <soc/qcom/cmd-db.h>
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#include <soc/qcom/rpmh.h>
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#include <dt-bindings/power/qcom-rpmpd.h>
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#define domain_to_rpmhpd(domain) container_of(domain, struct rpmhpd, pd)
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#define RPMH_ARC_MAX_LEVELS 16
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/**
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* struct rpmhpd - top level RPMh power domain resource data structure
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* @dev: rpmh power domain controller device
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* @pd: generic_pm_domain corrresponding to the power domain
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* @parent: generic_pm_domain corrresponding to the parent's power domain
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* @peer: A peer power domain in case Active only Voting is
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* supported
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* @active_only: True if it represents an Active only peer
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* @corner: current corner
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* @active_corner: current active corner
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* @enable_corner: lowest non-zero corner
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* @level: An array of level (vlvl) to corner (hlvl) mappings
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* derived from cmd-db
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* @level_count: Number of levels supported by the power domain. max
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* being 16 (0 - 15)
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* @enabled: true if the power domain is enabled
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* @res_name: Resource name used for cmd-db lookup
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* @addr: Resource address as looped up using resource name from
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* cmd-db
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*/
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struct rpmhpd {
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struct device *dev;
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struct generic_pm_domain pd;
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struct generic_pm_domain *parent;
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struct rpmhpd *peer;
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const bool active_only;
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unsigned int corner;
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unsigned int active_corner;
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unsigned int enable_corner;
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u32 level[RPMH_ARC_MAX_LEVELS];
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size_t level_count;
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bool enabled;
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const char *res_name;
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u32 addr;
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};
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struct rpmhpd_desc {
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struct rpmhpd **rpmhpds;
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size_t num_pds;
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};
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static DEFINE_MUTEX(rpmhpd_lock);
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/* RPMH powerdomains */
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static struct rpmhpd cx_ao;
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static struct rpmhpd mx;
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static struct rpmhpd mx_ao;
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static struct rpmhpd cx = {
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.pd = { .name = "cx", },
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.peer = &cx_ao,
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.res_name = "cx.lvl",
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};
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static struct rpmhpd cx_ao = {
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.pd = { .name = "cx_ao", },
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.active_only = true,
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.peer = &cx,
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.res_name = "cx.lvl",
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};
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static struct rpmhpd cx_ao_w_mx_parent;
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static struct rpmhpd cx_w_mx_parent = {
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.pd = { .name = "cx", },
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.peer = &cx_ao_w_mx_parent,
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.parent = &mx.pd,
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.res_name = "cx.lvl",
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};
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static struct rpmhpd cx_ao_w_mx_parent = {
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.pd = { .name = "cx_ao", },
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.active_only = true,
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.peer = &cx_w_mx_parent,
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.parent = &mx_ao.pd,
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.res_name = "cx.lvl",
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};
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static struct rpmhpd ebi = {
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.pd = { .name = "ebi", },
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.res_name = "ebi.lvl",
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};
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static struct rpmhpd gfx = {
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.pd = { .name = "gfx", },
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.res_name = "gfx.lvl",
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};
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static struct rpmhpd lcx = {
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.pd = { .name = "lcx", },
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.res_name = "lcx.lvl",
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};
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static struct rpmhpd lmx = {
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.pd = { .name = "lmx", },
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.res_name = "lmx.lvl",
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};
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static struct rpmhpd mmcx_ao;
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static struct rpmhpd mmcx = {
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.pd = { .name = "mmcx", },
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.peer = &mmcx_ao,
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.res_name = "mmcx.lvl",
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};
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static struct rpmhpd mmcx_ao = {
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.pd = { .name = "mmcx_ao", },
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.active_only = true,
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.peer = &mmcx,
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.res_name = "mmcx.lvl",
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};
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static struct rpmhpd mmcx_ao_w_cx_parent;
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static struct rpmhpd mmcx_w_cx_parent = {
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.pd = { .name = "mmcx", },
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.peer = &mmcx_ao_w_cx_parent,
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.parent = &cx.pd,
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.res_name = "mmcx.lvl",
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};
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static struct rpmhpd mmcx_ao_w_cx_parent = {
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.pd = { .name = "mmcx_ao", },
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.active_only = true,
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.peer = &mmcx_w_cx_parent,
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.parent = &cx_ao.pd,
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.res_name = "mmcx.lvl",
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};
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static struct rpmhpd mss = {
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.pd = { .name = "mss", },
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.res_name = "mss.lvl",
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};
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static struct rpmhpd mx_ao;
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static struct rpmhpd mx = {
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.pd = { .name = "mx", },
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.peer = &mx_ao,
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.res_name = "mx.lvl",
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};
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static struct rpmhpd mx_ao = {
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.pd = { .name = "mx_ao", },
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.active_only = true,
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.peer = &mx,
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.res_name = "mx.lvl",
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};
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static struct rpmhpd mxc_ao;
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static struct rpmhpd mxc = {
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.pd = { .name = "mxc", },
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.peer = &mxc_ao,
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.res_name = "mxc.lvl",
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};
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static struct rpmhpd mxc_ao = {
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.pd = { .name = "mxc_ao", },
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.active_only = true,
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.peer = &mxc,
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.res_name = "mxc.lvl",
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};
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/* SDM845 RPMH powerdomains */
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static struct rpmhpd *sdm845_rpmhpds[] = {
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[SDM845_CX] = &cx_w_mx_parent,
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[SDM845_CX_AO] = &cx_ao_w_mx_parent,
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[SDM845_EBI] = &ebi,
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[SDM845_GFX] = &gfx,
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[SDM845_LCX] = &lcx,
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[SDM845_LMX] = &lmx,
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[SDM845_MSS] = &mss,
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[SDM845_MX] = &mx,
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[SDM845_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sdm845_desc = {
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.rpmhpds = sdm845_rpmhpds,
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.num_pds = ARRAY_SIZE(sdm845_rpmhpds),
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};
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/* SDX55 RPMH powerdomains */
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static struct rpmhpd *sdx55_rpmhpds[] = {
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[SDX55_CX] = &cx_w_mx_parent,
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[SDX55_MSS] = &mss,
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[SDX55_MX] = &mx,
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};
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static const struct rpmhpd_desc sdx55_desc = {
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.rpmhpds = sdx55_rpmhpds,
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.num_pds = ARRAY_SIZE(sdx55_rpmhpds),
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};
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/* SM6350 RPMH powerdomains */
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static struct rpmhpd *sm6350_rpmhpds[] = {
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[SM6350_CX] = &cx_w_mx_parent,
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[SM6350_GFX] = &gfx,
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[SM6350_LCX] = &lcx,
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[SM6350_LMX] = &lmx,
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[SM6350_MSS] = &mss,
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[SM6350_MX] = &mx,
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};
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static const struct rpmhpd_desc sm6350_desc = {
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.rpmhpds = sm6350_rpmhpds,
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.num_pds = ARRAY_SIZE(sm6350_rpmhpds),
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};
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/* SM8150 RPMH powerdomains */
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static struct rpmhpd *sm8150_rpmhpds[] = {
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[SM8150_CX] = &cx_w_mx_parent,
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[SM8150_CX_AO] = &cx_ao_w_mx_parent,
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[SM8150_EBI] = &ebi,
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[SM8150_GFX] = &gfx,
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[SM8150_LCX] = &lcx,
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[SM8150_LMX] = &lmx,
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[SM8150_MMCX] = &mmcx,
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[SM8150_MMCX_AO] = &mmcx_ao,
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[SM8150_MSS] = &mss,
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[SM8150_MX] = &mx,
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[SM8150_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sm8150_desc = {
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.rpmhpds = sm8150_rpmhpds,
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.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
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};
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/* SM8250 RPMH powerdomains */
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static struct rpmhpd *sm8250_rpmhpds[] = {
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[SM8250_CX] = &cx_w_mx_parent,
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[SM8250_CX_AO] = &cx_ao_w_mx_parent,
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[SM8250_EBI] = &ebi,
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[SM8250_GFX] = &gfx,
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[SM8250_LCX] = &lcx,
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[SM8250_LMX] = &lmx,
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[SM8250_MMCX] = &mmcx,
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[SM8250_MMCX_AO] = &mmcx_ao,
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[SM8250_MX] = &mx,
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[SM8250_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sm8250_desc = {
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.rpmhpds = sm8250_rpmhpds,
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.num_pds = ARRAY_SIZE(sm8250_rpmhpds),
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};
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/* SM8350 Power domains */
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static struct rpmhpd *sm8350_rpmhpds[] = {
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[SM8350_CX] = &cx_w_mx_parent,
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[SM8350_CX_AO] = &cx_ao_w_mx_parent,
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[SM8350_EBI] = &ebi,
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[SM8350_GFX] = &gfx,
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[SM8350_LCX] = &lcx,
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[SM8350_LMX] = &lmx,
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[SM8350_MMCX] = &mmcx,
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[SM8350_MMCX_AO] = &mmcx_ao,
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[SM8350_MSS] = &mss,
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[SM8350_MX] = &mx,
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[SM8350_MX_AO] = &mx_ao,
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[SM8350_MXC] = &mxc,
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[SM8350_MXC_AO] = &mxc_ao,
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};
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static const struct rpmhpd_desc sm8350_desc = {
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.rpmhpds = sm8350_rpmhpds,
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.num_pds = ARRAY_SIZE(sm8350_rpmhpds),
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};
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/* SM8450 RPMH powerdomains */
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static struct rpmhpd *sm8450_rpmhpds[] = {
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[SM8450_CX] = &cx,
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[SM8450_CX_AO] = &cx_ao,
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[SM8450_EBI] = &ebi,
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[SM8450_GFX] = &gfx,
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[SM8450_LCX] = &lcx,
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[SM8450_LMX] = &lmx,
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[SM8450_MMCX] = &mmcx_w_cx_parent,
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[SM8450_MMCX_AO] = &mmcx_ao_w_cx_parent,
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[SM8450_MSS] = &mss,
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[SM8450_MX] = &mx,
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[SM8450_MX_AO] = &mx_ao,
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[SM8450_MXC] = &mxc,
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[SM8450_MXC_AO] = &mxc_ao,
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};
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static const struct rpmhpd_desc sm8450_desc = {
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.rpmhpds = sm8450_rpmhpds,
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.num_pds = ARRAY_SIZE(sm8450_rpmhpds),
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};
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/* SC7180 RPMH powerdomains */
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static struct rpmhpd *sc7180_rpmhpds[] = {
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[SC7180_CX] = &cx_w_mx_parent,
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[SC7180_CX_AO] = &cx_ao_w_mx_parent,
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[SC7180_GFX] = &gfx,
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[SC7180_LCX] = &lcx,
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[SC7180_LMX] = &lmx,
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[SC7180_MSS] = &mss,
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[SC7180_MX] = &mx,
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[SC7180_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sc7180_desc = {
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.rpmhpds = sc7180_rpmhpds,
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.num_pds = ARRAY_SIZE(sc7180_rpmhpds),
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};
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/* SC7280 RPMH powerdomains */
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static struct rpmhpd *sc7280_rpmhpds[] = {
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[SC7280_CX] = &cx,
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[SC7280_CX_AO] = &cx_ao,
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[SC7280_EBI] = &ebi,
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[SC7280_GFX] = &gfx,
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[SC7280_LCX] = &lcx,
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[SC7280_LMX] = &lmx,
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[SC7280_MSS] = &mss,
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[SC7280_MX] = &mx,
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[SC7280_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sc7280_desc = {
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.rpmhpds = sc7280_rpmhpds,
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.num_pds = ARRAY_SIZE(sc7280_rpmhpds),
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};
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/* SC8180x RPMH powerdomains */
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static struct rpmhpd *sc8180x_rpmhpds[] = {
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[SC8180X_CX] = &cx_w_mx_parent,
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[SC8180X_CX_AO] = &cx_ao_w_mx_parent,
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[SC8180X_EBI] = &ebi,
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[SC8180X_GFX] = &gfx,
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[SC8180X_LCX] = &lcx,
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[SC8180X_LMX] = &lmx,
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[SC8180X_MMCX] = &mmcx,
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[SC8180X_MMCX_AO] = &mmcx_ao,
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[SC8180X_MSS] = &mss,
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[SC8180X_MX] = &mx,
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[SC8180X_MX_AO] = &mx_ao,
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};
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static const struct rpmhpd_desc sc8180x_desc = {
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.rpmhpds = sc8180x_rpmhpds,
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.num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
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};
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static const struct of_device_id rpmhpd_match_table[] = {
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{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
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{ .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
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{ .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
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{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
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{ .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
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{ .compatible = "qcom,sm6350-rpmhpd", .data = &sm6350_desc },
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{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
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{ .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
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{ .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
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{ .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
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{ }
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};
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MODULE_DEVICE_TABLE(of, rpmhpd_match_table);
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static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
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unsigned int corner, bool sync)
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{
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struct tcs_cmd cmd = {
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.addr = pd->addr,
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.data = corner,
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};
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/*
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* Wait for an ack only when we are increasing the
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* perf state of the power domain
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*/
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if (sync)
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return rpmh_write(pd->dev, state, &cmd, 1);
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else
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return rpmh_write_async(pd->dev, state, &cmd, 1);
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}
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static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
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unsigned int *active, unsigned int *sleep)
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{
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*active = corner;
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if (pd->active_only)
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*sleep = 0;
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else
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*sleep = *active;
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}
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/*
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* This function is used to aggregate the votes across the active only
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* resources and its peers. The aggregated votes are sent to RPMh as
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* ACTIVE_ONLY votes (which take effect immediately), as WAKE_ONLY votes
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* (applied by RPMh on system wakeup) and as SLEEP votes (applied by RPMh
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* on system sleep).
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* We send ACTIVE_ONLY votes for resources without any peers. For others,
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* which have an active only peer, all 3 votes are sent.
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*/
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static int rpmhpd_aggregate_corner(struct rpmhpd *pd, unsigned int corner)
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{
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int ret;
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struct rpmhpd *peer = pd->peer;
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unsigned int active_corner, sleep_corner;
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unsigned int this_active_corner = 0, this_sleep_corner = 0;
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unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
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to_active_sleep(pd, corner, &this_active_corner, &this_sleep_corner);
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if (peer && peer->enabled)
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to_active_sleep(peer, peer->corner, &peer_active_corner,
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&peer_sleep_corner);
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active_corner = max(this_active_corner, peer_active_corner);
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ret = rpmhpd_send_corner(pd, RPMH_ACTIVE_ONLY_STATE, active_corner,
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active_corner > pd->active_corner);
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if (ret)
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return ret;
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pd->active_corner = active_corner;
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if (peer) {
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peer->active_corner = active_corner;
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ret = rpmhpd_send_corner(pd, RPMH_WAKE_ONLY_STATE,
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active_corner, false);
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if (ret)
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return ret;
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sleep_corner = max(this_sleep_corner, peer_sleep_corner);
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return rpmhpd_send_corner(pd, RPMH_SLEEP_STATE, sleep_corner,
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|
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 = 0, i;
|
|
|
|
mutex_lock(&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)
|
|
goto out;
|
|
}
|
|
|
|
pd->corner = i;
|
|
out:
|
|
mutex_unlock(&rpmhpd_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static unsigned int rpmhpd_get_performance_state(struct generic_pm_domain *genpd,
|
|
struct dev_pm_opp *opp)
|
|
{
|
|
return dev_pm_opp_get_level(opp);
|
|
}
|
|
|
|
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++) {
|
|
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]) {
|
|
dev_warn(dev, "rpmhpds[%d] is empty\n", 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;
|
|
rpmhpds[i]->pd.opp_to_performance_state = rpmhpd_get_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 struct platform_driver rpmhpd_driver = {
|
|
.driver = {
|
|
.name = "qcom-rpmhpd",
|
|
.of_match_table = rpmhpd_match_table,
|
|
.suppress_bind_attrs = true,
|
|
},
|
|
.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");
|