Commit a3b884ce authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Sudeep Holla

firmware: arm_scmi: Add clock management to the SCMI power domain

Clocks requiring non-atomic contexts are supported by the generic clock
PM layer since commit 0bfa0820 ("PM: clk: make PM clock layer
compatible with clocks that must sleep"). That means we can have
SCMI-based clocks be managed by the SCMI power domain now.

Link: https://lore.kernel.org/r/5q88n947-pon-4940-3or6-s54o4r361o5s@onlyvoer.pbzTested-by: default avatarDien Pham <dien.pham.ry@renesas.com>
Reviewed-by: default avatarGaku Inami <gaku.inami.xh@renesas.com>
Signed-off-by: default avatarNicolas Pitre <npitre@baylibre.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent 6efb943b
......@@ -8,6 +8,7 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_clock.h>
#include <linux/pm_domain.h>
#include <linux/scmi_protocol.h>
......@@ -52,6 +53,27 @@ static int scmi_pd_power_off(struct generic_pm_domain *domain)
return scmi_pd_power(domain, false);
}
static int scmi_pd_attach_dev(struct generic_pm_domain *pd, struct device *dev)
{
int ret;
ret = pm_clk_create(dev);
if (ret)
return ret;
ret = of_pm_clk_add_clks(dev);
if (ret >= 0)
return 0;
pm_clk_destroy(dev);
return ret;
}
static void scmi_pd_detach_dev(struct generic_pm_domain *pd, struct device *dev)
{
pm_clk_destroy(dev);
}
static int scmi_pm_domain_probe(struct scmi_device *sdev)
{
int num_domains, i;
......@@ -102,6 +124,10 @@ static int scmi_pm_domain_probe(struct scmi_device *sdev)
scmi_pd->genpd.name = scmi_pd->name;
scmi_pd->genpd.power_off = scmi_pd_power_off;
scmi_pd->genpd.power_on = scmi_pd_power_on;
scmi_pd->genpd.attach_dev = scmi_pd_attach_dev;
scmi_pd->genpd.detach_dev = scmi_pd_detach_dev;
scmi_pd->genpd.flags = GENPD_FLAG_PM_CLK |
GENPD_FLAG_ACTIVE_WAKEUP;
pm_genpd_init(&scmi_pd->genpd, NULL,
state == SCMI_POWER_STATE_GENERIC_OFF);
......
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