soc: samsung: Move power-domain driver to the genpd dir

To simplify with maintenance let's move the samsung power-domain driver to
the new genpd directory. Going forward, patches are intended to be managed
through a separate git tree, according to MAINTAINERS.

Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: <linux-samsung-soc@vger.kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

2 files changed, 0 insertions, 167 deletions

diff --git a/drivers/soc/samsung/Makefile b/drivers/soc/samsung/Makefile
index d35270fc6b2b..248a33d7754a 100644
--- a/drivers/soc/samsung/Makefile
+++ b/drivers/soc/samsung/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_EXYNOS_PMU)	+= exynos-pmu.o
 
 obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS)	+= exynos3250-pmu.o exynos4-pmu.o \
 					exynos5250-pmu.o exynos5420-pmu.o
-obj-$(CONFIG_EXYNOS_PM_DOMAINS) += pm_domains.o
 obj-$(CONFIG_EXYNOS_REGULATOR_COUPLER) += exynos-regulator-coupler.o
 
 obj-$(CONFIG_SAMSUNG_PM_CHECK)	+= s3c-pm-check.o
diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c
deleted file mode 100644
index d07f3c9d6903..000000000000
--- a/drivers/soc/samsung/pm_domains.c
+++ /dev/null
@@ -1,166 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-//
-// Exynos Generic power domain support.
-//
-// Copyright (c) 2012 Samsung Electronics Co., Ltd.
-//		http://www.samsung.com
-//
-// Implementation of Exynos specific power domain control which is used in
-// conjunction with runtime-pm. Support for both device-tree and non-device-tree
-// based power domain support is included.
-
-#include <linux/io.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/pm_domain.h>
-#include <linux/delay.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <linux/pm_runtime.h>
-
-struct exynos_pm_domain_config {
-	/* Value for LOCAL_PWR_CFG and STATUS fields for each domain */
-	u32 local_pwr_cfg;
-};
-
-/*
- * Exynos specific wrapper around the generic power domain
- */
-struct exynos_pm_domain {
-	void __iomem *base;
-	struct generic_pm_domain pd;
-	u32 local_pwr_cfg;
-};
-
-static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
-{
-	struct exynos_pm_domain *pd;
-	void __iomem *base;
-	u32 timeout, pwr;
-	char *op;
-
-	pd = container_of(domain, struct exynos_pm_domain, pd);
-	base = pd->base;
-
-	pwr = power_on ? pd->local_pwr_cfg : 0;
-	writel_relaxed(pwr, base);
-
-	/* Wait max 1ms */
-	timeout = 10;
-
-	while ((readl_relaxed(base + 0x4) & pd->local_pwr_cfg) != pwr) {
-		if (!timeout) {
-			op = (power_on) ? "enable" : "disable";
-			pr_err("Power domain %s %s failed\n", domain->name, op);
-			return -ETIMEDOUT;
-		}
-		timeout--;
-		cpu_relax();
-		usleep_range(80, 100);
-	}
-
-	return 0;
-}
-
-static int exynos_pd_power_on(struct generic_pm_domain *domain)
-{
-	return exynos_pd_power(domain, true);
-}
-
-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 = {
-	.local_pwr_cfg		= 0x7,
-};
-
-static const struct exynos_pm_domain_config exynos5433_cfg = {
-	.local_pwr_cfg		= 0xf,
-};
-
-static const struct of_device_id exynos_pm_domain_of_match[] = {
-	{
-		.compatible = "samsung,exynos4210-pd",
-		.data = &exynos4210_cfg,
-	}, {
-		.compatible = "samsung,exynos5433-pd",
-		.data = &exynos5433_cfg,
-	},
-	{ },
-};
-
-static const char *exynos_get_domain_name(struct device_node *node)
-{
-	const char *name;
-
-	if (of_property_read_string(node, "label", &name) < 0)
-		name = kbasename(node->full_name);
-	return kstrdup_const(name, GFP_KERNEL);
-}
-
-static int exynos_pd_probe(struct platform_device *pdev)
-{
-	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;
-
-	pm_domain_cfg = of_device_get_match_data(dev);
-	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
-	if (!pd)
-		return -ENOMEM;
-
-	pd->pd.name = exynos_get_domain_name(np);
-	if (!pd->pd.name)
-		return -ENOMEM;
-
-	pd->base = of_iomap(np, 0);
-	if (!pd->base) {
-		kfree_const(pd->pd.name);
-		return -ENODEV;
-	}
-
-	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);
-	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_genpd_add_subdomain(&parent, &child))
-			pr_warn("%pOF failed to add subdomain: %pOF\n",
-				parent.np, child.np);
-		else
-			pr_info("%pOF has as child subdomain: %pOF.\n",
-				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);
-}
-core_initcall(exynos4_pm_init_power_domain);