soc: zte: pm_domains: Add support for zx296718

This patch introduces the power domain driver of zx296718
which belongs to zte's zx2967 family.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/soc/zte/Makefile

@@ -2,3 +2,4 @@
 # ZTE SOC drivers
 #
 obj-$(CONFIG_ZX2967_PM_DOMAINS) += zx2967_pm_domains.o
+obj-$(CONFIG_ZX2967_PM_DOMAINS) += zx296718_pm_domains.o

drivers/soc/zte/zx296718_pm_domains.c

@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2017 ZTE Ltd.
+ *
+ * Author: Baoyou Xie <baoyou.xie@linaro.org>
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <dt-bindings/soc/zte,pm_domains.h>
+#include "zx2967_pm_domains.h"
+
+static u16 zx296718_offsets[REG_ARRAY_SIZE] = {
+	[REG_CLKEN] = 0x18,
+	[REG_ISOEN] = 0x1c,
+	[REG_RSTEN] = 0x20,
+	[REG_PWREN] = 0x24,
+	[REG_ACK_SYNC] = 0x28,
+};
+
+enum {
+	PCU_DM_VOU = 0,
+	PCU_DM_SAPPU,
+	PCU_DM_VDE,
+	PCU_DM_VCE,
+	PCU_DM_HDE,
+	PCU_DM_VIU,
+	PCU_DM_USB20,
+	PCU_DM_USB21,
+	PCU_DM_USB30,
+	PCU_DM_HSIC,
+	PCU_DM_GMAC,
+	PCU_DM_TS,
+};
+
+static struct zx2967_pm_domain vou_domain = {
+	.dm = {
+		.name		= "vou_domain",
+	},
+	.bit = PCU_DM_VOU,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain sappu_domain = {
+	.dm = {
+		.name		= "sappu_domain",
+	},
+	.bit = PCU_DM_SAPPU,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain vde_domain = {
+	.dm = {
+		.name		= "vde_domain",
+	},
+	.bit = PCU_DM_VDE,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain vce_domain = {
+	.dm = {
+		.name		= "vce_domain",
+	},
+	.bit = PCU_DM_VCE,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain hde_domain = {
+	.dm = {
+		.name		= "hde_domain",
+	},
+	.bit = PCU_DM_HDE,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain viu_domain = {
+	.dm = {
+		.name		= "viu_domain",
+	},
+	.bit = PCU_DM_VIU,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain usb20_domain = {
+	.dm = {
+		.name		= "usb20_domain",
+	},
+	.bit = PCU_DM_USB20,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain usb21_domain = {
+	.dm = {
+		.name		= "usb21_domain",
+	},
+	.bit = PCU_DM_USB21,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain usb30_domain = {
+	.dm = {
+		.name		= "usb30_domain",
+	},
+	.bit = PCU_DM_USB30,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain hsic_domain = {
+	.dm = {
+		.name		= "hsic_domain",
+	},
+	.bit = PCU_DM_HSIC,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain gmac_domain = {
+	.dm = {
+		.name		= "gmac_domain",
+	},
+	.bit = PCU_DM_GMAC,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct zx2967_pm_domain ts_domain = {
+	.dm = {
+		.name		= "ts_domain",
+	},
+	.bit = PCU_DM_TS,
+	.polarity = PWREN,
+	.reg_offset = zx296718_offsets,
+};
+
+static struct generic_pm_domain *zx296718_pm_domains[] = {
+	[DM_ZX296718_VOU] = &vou_domain.dm,
+	[DM_ZX296718_SAPPU] = &sappu_domain.dm,
+	[DM_ZX296718_VDE] = &vde_domain.dm,
+	[DM_ZX296718_VCE] = &vce_domain.dm,
+	[DM_ZX296718_HDE] = &hde_domain.dm,
+	[DM_ZX296718_VIU] = &viu_domain.dm,
+	[DM_ZX296718_USB20] = &usb20_domain.dm,
+	[DM_ZX296718_USB21] = &usb21_domain.dm,
+	[DM_ZX296718_USB30] = &usb30_domain.dm,
+	[DM_ZX296718_HSIC] = &hsic_domain.dm,
+	[DM_ZX296718_GMAC] = &gmac_domain.dm,
+	[DM_ZX296718_TS] = &ts_domain.dm,
+};
+
+static int zx296718_pd_probe(struct platform_device *pdev)
+{
+	return zx2967_pd_probe(pdev,
+			  zx296718_pm_domains,
+			  ARRAY_SIZE(zx296718_pm_domains));
+}
+
+static const struct of_device_id zx296718_pm_domain_matches[] = {
+	{ .compatible = "zte,zx296718-pcu", },
+	{ },
+};
+
+static struct platform_driver zx296718_pd_driver = {
+	.driver = {
+		.name = "zx296718-powerdomain",
+		.owner = THIS_MODULE,
+		.of_match_table = zx296718_pm_domain_matches,
+	},
+	.probe = zx296718_pd_probe,
+};
+
+static int __init zx296718_pd_init(void)
+{
+	return platform_driver_register(&zx296718_pd_driver);
+}
+subsys_initcall(zx296718_pd_init);