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soc: rockchip: power-domain: Add pd status module param for debug

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Change-Id: I9edf5741a95f877dda22b2fa75eabe288403ed33
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao
2024-01-19 16:18:00 +08:00
committed by Tao Huang
parent e424736732
commit 3402a5b434
1 changed files with 90 additions and 0 deletions
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90
drivers/soc/rockchip/pm_domains.c
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@@ -132,6 +132,96 @@ module_param_named(always_on, pm_domain_always_on, bool, 0644);
MODULE_PARM_DESC(always_on,
"Always keep pm domains power on except for system suspend.");
#if 0
#define NAME_LEN 20
static bool rockchip_pmu_domain_is_on(struct rockchip_pm_domain *pd);
static int rockchip_pd_power(struct rockchip_pm_domain *pd, bool power_on);
static void rockchip_pmu_lock(struct rockchip_pm_domain *pd);
static void rockchip_pmu_unlock(struct rockchip_pm_domain *pd);
/*
* power on : echo gpu 1 > /sys/module/pm_domains/parameters/status
* power off: echo gpu 0 > /sys/module/pm_domains/parameters/status
*/
static int pd_set_status(const char *val, const struct kernel_param *kp)
{
struct generic_pm_domain *genpd;
struct rockchip_pm_domain *pd;
char name[NAME_LEN] = { 0 };
int status = 0;
int i;
bool is_on;
if (!g_pmu)
return 0;
if (strlen(val) > (NAME_LEN - 2))
return -EINVAL;
if (sscanf(val, "%s %d", name, &status) != 2) {
pr_info("power on : echo gpu 1 > /sys/module/pm_domains/parameters/status\n");
pr_info("power off: echo gpu 0 > /sys/module/pm_domains/parameters/status\n");
return -EINVAL;
}
for (i = 0; i < g_pmu->genpd_data.num_domains; i++) {
genpd = g_pmu->genpd_data.domains[i];
if (!genpd)
continue;
if (strncmp(genpd->name, name, strlen(name)))
continue;
pd = container_of(genpd, struct rockchip_pm_domain, genpd);
pr_info("set %s %d\n", genpd->name, status);
if (!rockchip_pd_power(pd, status)) {
rockchip_pmu_lock(pd);
is_on = rockchip_pmu_domain_is_on(pd);
rockchip_pmu_unlock(pd);
pr_info("get %s %d\n", genpd->name, is_on);
}
break;
}
return 0;
}
/*
* cat /sys/module/pm_domains/parameters/status
*/
static int pd_get_status(char *buffer, const struct kernel_param *kp)
{
struct generic_pm_domain *genpd;
struct rockchip_pm_domain *pd;
int i;
int len = 0;
bool is_on;
if (!g_pmu)
return 0;
for (i = 0; i < g_pmu->genpd_data.num_domains; i++) {
genpd = g_pmu->genpd_data.domains[i];
if (!genpd)
continue;
pd = container_of(genpd, struct rockchip_pm_domain, genpd);
rockchip_pmu_lock(pd);
is_on = rockchip_pmu_domain_is_on(pd);
rockchip_pmu_unlock(pd);
len += sprintf(buffer + len, "%s %d\n", genpd->name, is_on);
}
return len;
}
static const struct kernel_param_ops pd_status_ops = {
.set = pd_set_status,
.get = pd_get_status,
};
module_param_cb(status, &pd_status_ops, NULL, 0600);
MODULE_PARM_DESC(status, "Change pd status.");
#endif
static void rockchip_pmu_lock(struct rockchip_pm_domain *pd)
{
mutex_lock(&pd->pmu->mutex);