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WIP: soc: samsung: pm_domains: Bring back old driver implementation

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Using new implementation decreases Mali GPU performance significantly
(with both KBase and Panfrost drivers).

Signed-off-by: Pavel Golikov <Paullo612@ya.ru>
This commit is contained in:
Pavel Golikov
2022-06-24 15:56:41 +00:00
committed by Mauro (mdrjr) Ribeiro
parent 3954447e1b
commit c1ab0a23ab
1 changed files with 50 additions and 49 deletions
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99
drivers/soc/samsung/pm_domains.c
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@@ -16,7 +16,7 @@
#include <linux/delay.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <linux/sched.h>
struct exynos_pm_domain_config {
/* Value for LOCAL_PWR_CFG and STATUS fields for each domain */
@@ -72,15 +72,15 @@ static int exynos_pd_power_off(struct generic_pm_domain *domain)
return exynos_pd_power(domain, false);
}
static const struct exynos_pm_domain_config exynos4210_cfg = {
static const struct exynos_pm_domain_config exynos4210_cfg __initconst = {
.local_pwr_cfg = 0x7,
};
static const struct exynos_pm_domain_config exynos5433_cfg = {
static const struct exynos_pm_domain_config exynos5433_cfg __initconst = {
.local_pwr_cfg = 0xf,
};
static const struct of_device_id exynos_pm_domain_of_match[] = {
static const struct of_device_id exynos_pm_domain_of_match[] __initconst = {
{
.compatible = "samsung,exynos4210-pd",
.data = &exynos4210_cfg,
@@ -91,7 +91,7 @@ static const struct of_device_id exynos_pm_domain_of_match[] = {
{ },
};
static const char *exynos_get_domain_name(struct device_node *node)
static __init const char *exynos_get_domain_name(struct device_node *node)
{
const char *name;
@@ -100,44 +100,60 @@ static const char *exynos_get_domain_name(struct device_node *node)
return kstrdup_const(name, GFP_KERNEL);
}
static int exynos_pd_probe(struct platform_device *pdev)
static __init int exynos4_pm_init_power_domain(void)
{
const struct exynos_pm_domain_config *pm_domain_cfg;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct of_phandle_args child, parent;
struct exynos_pm_domain *pd;
int on, ret;
struct device_node *np;
const struct of_device_id *match;
pm_domain_cfg = of_device_get_match_data(dev);
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return -ENOMEM;
for_each_matching_node_and_match(np, exynos_pm_domain_of_match, &match) {
const struct exynos_pm_domain_config *pm_domain_cfg;
struct exynos_pm_domain *pd;
int on;
pd->pd.name = exynos_get_domain_name(np);
if (!pd->pd.name)
return -ENOMEM;
pm_domain_cfg = match->data;
pd->base = of_iomap(np, 0);
if (!pd->base) {
kfree_const(pd->pd.name);
return -ENODEV;
pd = kzalloc(sizeof(*pd), GFP_KERNEL);
if (!pd) {
of_node_put(np);
return -ENOMEM;
}
pd->pd.name = exynos_get_domain_name(np);
if (!pd->pd.name) {
kfree(pd);
of_node_put(np);
return -ENOMEM;
}
pd->base = of_iomap(np, 0);
if (!pd->base) {
pr_warn("%s: failed to map memory\n", __func__);
kfree_const(pd->pd.name);
kfree(pd);
continue;
}
pd->pd.power_off = exynos_pd_power_off;
pd->pd.power_on = exynos_pd_power_on;
pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;
on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;
pm_genpd_init(&pd->pd, NULL, !on);
of_genpd_add_provider_simple(np, &pd->pd);
}
pd->pd.power_off = exynos_pd_power_off;
pd->pd.power_on = exynos_pd_power_on;
pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;
/* Assign the child power domains to their parents */
for_each_matching_node(np, exynos_pm_domain_of_match) {
struct of_phandle_args child, parent;
on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;
pm_genpd_init(&pd->pd, NULL, !on);
ret = of_genpd_add_provider_simple(np, &pd->pd);
if (ret == 0 && of_parse_phandle_with_args(np, "power-domains",
"#power-domain-cells", 0, &parent) == 0) {
child.np = np;
child.args_count = 0;
if (of_parse_phandle_with_args(np, "power-domains",
"#power-domain-cells", 0,
&parent) != 0)
continue;
if (of_genpd_add_subdomain(&parent, &child))
pr_warn("%pOF failed to add subdomain: %pOF\n",
parent.np, child.np);
@@ -146,21 +162,6 @@ static int exynos_pd_probe(struct platform_device *pdev)
parent.np, child.np);
}
pm_runtime_enable(dev);
return ret;
}
static struct platform_driver exynos_pd_driver = {
.probe = exynos_pd_probe,
.driver = {
.name = "exynos-pd",
.of_match_table = exynos_pm_domain_of_match,
.suppress_bind_attrs = true,
}
};
static __init int exynos4_pm_init_power_domain(void)
{
return platform_driver_register(&exynos_pd_driver);
return 0;
}
core_initcall(exynos4_pm_init_power_domain);