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UPSTREAM: PM: domains: Allow genpd providers to manage OPP tables directly by its FW

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In some cases the OPP tables aren't specified in device tree, but rather
encoded in the FW. To allow a genpd provider to specify them dynamically
instead, let's add a new genpd flag, GENPD_FLAG_OPP_TABLE_FW.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-13-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Bug: 323966425
Change-Id: I14f40b8cd4acce92ad5fd7a1769c513e7cbfa7ae
(cherry picked from commit 3dd91515ef43dd43e32e2a84e4bd881b64fb33ae)
Signed-off-by: Nikunj Kela <quic_nkela@quicinc.com>
Signed-off-by: Anant Goel <quic_anantg@quicinc.com>
This commit is contained in:
Ulf Hansson
2023-08-25 13:26:32 +02:00
committed by Anant Goel
parent c638aef4e9
commit 5c0092ff97
2 changed files with 11 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/base/power/domain.c
View File

@@ -130,6 +130,7 @@ static const struct genpd_lock_ops genpd_spin_ops = {
#define genpd_is_active_wakeup(genpd) (genpd->flags & GENPD_FLAG_ACTIVE_WAKEUP)
#define genpd_is_cpu_domain(genpd) (genpd->flags & GENPD_FLAG_CPU_DOMAIN)
#define genpd_is_rpm_always_on(genpd) (genpd->flags & GENPD_FLAG_RPM_ALWAYS_ON)
#define genpd_is_opp_table_fw(genpd) (genpd->flags & GENPD_FLAG_OPP_TABLE_FW)
static inline bool irq_safe_dev_in_sleep_domain(struct device *dev,
const struct generic_pm_domain *genpd)
@@ -2319,7 +2320,7 @@ int of_genpd_add_provider_simple(struct device_node *np,
genpd->dev.of_node = np;
/* Parse genpd OPP table */
if (genpd->set_performance_state) {
if (!genpd_is_opp_table_fw(genpd) && genpd->set_performance_state) {
ret = dev_pm_opp_of_add_table(&genpd->dev);
if (ret)
return dev_err_probe(&genpd->dev, ret, "Failed to add OPP table\n");
@@ -2334,7 +2335,7 @@ int of_genpd_add_provider_simple(struct device_node *np,
ret = genpd_add_provider(np, genpd_xlate_simple, genpd);
if (ret) {
if (genpd->set_performance_state) {
if (!genpd_is_opp_table_fw(genpd) && genpd->set_performance_state) {
dev_pm_opp_put_opp_table(genpd->opp_table);
dev_pm_opp_of_remove_table(&genpd->dev);
}
@@ -2378,7 +2379,7 @@ int of_genpd_add_provider_onecell(struct device_node *np,
genpd->dev.of_node = np;
/* Parse genpd OPP table */
if (genpd->set_performance_state) {
if (!genpd_is_opp_table_fw(genpd) && genpd->set_performance_state) {
ret = dev_pm_opp_of_add_table_indexed(&genpd->dev, i);
if (ret) {
dev_err_probe(&genpd->dev, ret,
@@ -2414,7 +2415,7 @@ error:
genpd->provider = NULL;
genpd->has_provider = false;
if (genpd->set_performance_state) {
if (!genpd_is_opp_table_fw(genpd) && genpd->set_performance_state) {
dev_pm_opp_put_opp_table(genpd->opp_table);
dev_pm_opp_of_remove_table(&genpd->dev);
}
@@ -2446,7 +2447,7 @@ void of_genpd_del_provider(struct device_node *np)
if (gpd->provider == &np->fwnode) {
gpd->has_provider = false;
if (!gpd->set_performance_state)
if (genpd_is_opp_table_fw(gpd) || !gpd->set_performance_state)
continue;
dev_pm_opp_put_opp_table(gpd->opp_table);

5
include/linux/pm_domain.h
View File

@@ -60,6 +60,10 @@
* GENPD_FLAG_MIN_RESIDENCY: Enable the genpd governor to consider its
* components' next wakeup when determining the
* optimal idle state.
*
* GENPD_FLAG_OPP_TABLE_FW: The genpd provider supports performance states,
* but its corresponding OPP tables are not
* described in DT, but are given directly by FW.
*/
#define GENPD_FLAG_PM_CLK (1U << 0)
#define GENPD_FLAG_IRQ_SAFE (1U << 1)
@@ -68,6 +72,7 @@
#define GENPD_FLAG_CPU_DOMAIN (1U << 4)
#define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5)
#define GENPD_FLAG_MIN_RESIDENCY (1U << 6)
#define GENPD_FLAG_OPP_TABLE_FW (1U << 7)
enum gpd_status {
GENPD_STATE_ON = 0, /* PM domain is on */