Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

3 files changed, 952 insertions, 0 deletions

diff --git a/kernel/drivers/soc/mediatek/Kconfig b/kernel/drivers/soc/mediatek/Kconfig
new file mode 100644
index 000000000..3c1850332
--- /dev/null
+++ b/kernel/drivers/soc/mediatek/Kconfig
@@ -0,0 +1,12 @@
+#
+# MediaTek SoC drivers
+#
+config MTK_PMIC_WRAP
+	tristate "MediaTek PMIC Wrapper Support"
+	depends on ARCH_MEDIATEK
+	depends on RESET_CONTROLLER
+	select REGMAP
+	help
+	  Say yes here to add support for MediaTek PMIC Wrapper found
+	  on different MediaTek SoCs. The PMIC wrapper is a proprietary
+	  hardware to connect the PMIC.
diff --git a/kernel/drivers/soc/mediatek/Makefile b/kernel/drivers/soc/mediatek/Makefile
new file mode 100644
index 000000000..ecaf4defd
--- /dev/null
+++ b/kernel/drivers/soc/mediatek/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o
diff --git a/kernel/drivers/soc/mediatek/mtk-pmic-wrap.c b/kernel/drivers/soc/mediatek/mtk-pmic-wrap.c
new file mode 100644
index 000000000..f432291fe
--- /dev/null
+++ b/kernel/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -0,0 +1,939 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Flora Fu, MediaTek
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define PWRAP_MT8135_BRIDGE_IORD_ARB_EN		0x4
+#define PWRAP_MT8135_BRIDGE_WACS3_EN		0x10
+#define PWRAP_MT8135_BRIDGE_INIT_DONE3		0x14
+#define PWRAP_MT8135_BRIDGE_WACS4_EN		0x24
+#define PWRAP_MT8135_BRIDGE_INIT_DONE4		0x28
+#define PWRAP_MT8135_BRIDGE_INT_EN		0x38
+#define PWRAP_MT8135_BRIDGE_TIMER_EN		0x48
+#define PWRAP_MT8135_BRIDGE_WDT_UNIT		0x50
+#define PWRAP_MT8135_BRIDGE_WDT_SRC_EN		0x54
+
+/* macro for wrapper status */
+#define PWRAP_GET_WACS_RDATA(x)		(((x) >> 0) & 0x0000ffff)
+#define PWRAP_GET_WACS_FSM(x)		(((x) >> 16) & 0x00000007)
+#define PWRAP_GET_WACS_REQ(x)		(((x) >> 19) & 0x00000001)
+#define PWRAP_STATE_SYNC_IDLE0		(1 << 20)
+#define PWRAP_STATE_INIT_DONE0		(1 << 21)
+
+/* macro for WACS FSM */
+#define PWRAP_WACS_FSM_IDLE		0x00
+#define PWRAP_WACS_FSM_REQ		0x02
+#define PWRAP_WACS_FSM_WFDLE		0x04
+#define PWRAP_WACS_FSM_WFVLDCLR		0x06
+#define PWRAP_WACS_INIT_DONE		0x01
+#define PWRAP_WACS_WACS_SYNC_IDLE	0x01
+#define PWRAP_WACS_SYNC_BUSY		0x00
+
+/* macro for device wrapper default value */
+#define PWRAP_DEW_READ_TEST_VAL		0x5aa5
+#define PWRAP_DEW_WRITE_TEST_VAL	0xa55a
+
+/* macro for manual command */
+#define PWRAP_MAN_CMD_SPI_WRITE		(1 << 13)
+#define PWRAP_MAN_CMD_OP_CSH		(0x0 << 8)
+#define PWRAP_MAN_CMD_OP_CSL		(0x1 << 8)
+#define PWRAP_MAN_CMD_OP_CK		(0x2 << 8)
+#define PWRAP_MAN_CMD_OP_OUTS		(0x8 << 8)
+#define PWRAP_MAN_CMD_OP_OUTD		(0x9 << 8)
+#define PWRAP_MAN_CMD_OP_OUTQ		(0xa << 8)
+
+/* macro for slave device wrapper registers */
+#define PWRAP_DEW_BASE			0xbc00
+#define PWRAP_DEW_EVENT_OUT_EN		(PWRAP_DEW_BASE + 0x0)
+#define PWRAP_DEW_DIO_EN		(PWRAP_DEW_BASE + 0x2)
+#define PWRAP_DEW_EVENT_SRC_EN		(PWRAP_DEW_BASE + 0x4)
+#define PWRAP_DEW_EVENT_SRC		(PWRAP_DEW_BASE + 0x6)
+#define PWRAP_DEW_EVENT_FLAG		(PWRAP_DEW_BASE + 0x8)
+#define PWRAP_DEW_READ_TEST		(PWRAP_DEW_BASE + 0xa)
+#define PWRAP_DEW_WRITE_TEST		(PWRAP_DEW_BASE + 0xc)
+#define PWRAP_DEW_CRC_EN		(PWRAP_DEW_BASE + 0xe)
+#define PWRAP_DEW_CRC_VAL		(PWRAP_DEW_BASE + 0x10)
+#define PWRAP_DEW_MON_GRP_SEL		(PWRAP_DEW_BASE + 0x12)
+#define PWRAP_DEW_MON_FLAG_SEL		(PWRAP_DEW_BASE + 0x14)
+#define PWRAP_DEW_EVENT_TEST		(PWRAP_DEW_BASE + 0x16)
+#define PWRAP_DEW_CIPHER_KEY_SEL	(PWRAP_DEW_BASE + 0x18)
+#define PWRAP_DEW_CIPHER_IV_SEL		(PWRAP_DEW_BASE + 0x1a)
+#define PWRAP_DEW_CIPHER_LOAD		(PWRAP_DEW_BASE + 0x1c)
+#define PWRAP_DEW_CIPHER_START		(PWRAP_DEW_BASE + 0x1e)
+#define PWRAP_DEW_CIPHER_RDY		(PWRAP_DEW_BASE + 0x20)
+#define PWRAP_DEW_CIPHER_MODE		(PWRAP_DEW_BASE + 0x22)
+#define PWRAP_DEW_CIPHER_SWRST		(PWRAP_DEW_BASE + 0x24)
+#define PWRAP_MT8173_DEW_CIPHER_IV0	(PWRAP_DEW_BASE + 0x26)
+#define PWRAP_MT8173_DEW_CIPHER_IV1	(PWRAP_DEW_BASE + 0x28)
+#define PWRAP_MT8173_DEW_CIPHER_IV2	(PWRAP_DEW_BASE + 0x2a)
+#define PWRAP_MT8173_DEW_CIPHER_IV3	(PWRAP_DEW_BASE + 0x2c)
+#define PWRAP_MT8173_DEW_CIPHER_IV4	(PWRAP_DEW_BASE + 0x2e)
+#define PWRAP_MT8173_DEW_CIPHER_IV5	(PWRAP_DEW_BASE + 0x30)
+
+enum pwrap_regs {
+	PWRAP_MUX_SEL,
+	PWRAP_WRAP_EN,
+	PWRAP_DIO_EN,
+	PWRAP_SIDLY,
+	PWRAP_CSHEXT_WRITE,
+	PWRAP_CSHEXT_READ,
+	PWRAP_CSLEXT_START,
+	PWRAP_CSLEXT_END,
+	PWRAP_STAUPD_PRD,
+	PWRAP_STAUPD_GRPEN,
+	PWRAP_STAUPD_MAN_TRIG,
+	PWRAP_STAUPD_STA,
+	PWRAP_WRAP_STA,
+	PWRAP_HARB_INIT,
+	PWRAP_HARB_HPRIO,
+	PWRAP_HIPRIO_ARB_EN,
+	PWRAP_HARB_STA0,
+	PWRAP_HARB_STA1,
+	PWRAP_MAN_EN,
+	PWRAP_MAN_CMD,
+	PWRAP_MAN_RDATA,
+	PWRAP_MAN_VLDCLR,
+	PWRAP_WACS0_EN,
+	PWRAP_INIT_DONE0,
+	PWRAP_WACS0_CMD,
+	PWRAP_WACS0_RDATA,
+	PWRAP_WACS0_VLDCLR,
+	PWRAP_WACS1_EN,
+	PWRAP_INIT_DONE1,
+	PWRAP_WACS1_CMD,
+	PWRAP_WACS1_RDATA,
+	PWRAP_WACS1_VLDCLR,
+	PWRAP_WACS2_EN,
+	PWRAP_INIT_DONE2,
+	PWRAP_WACS2_CMD,
+	PWRAP_WACS2_RDATA,
+	PWRAP_WACS2_VLDCLR,
+	PWRAP_INT_EN,
+	PWRAP_INT_FLG_RAW,
+	PWRAP_INT_FLG,
+	PWRAP_INT_CLR,
+	PWRAP_SIG_ADR,
+	PWRAP_SIG_MODE,
+	PWRAP_SIG_VALUE,
+	PWRAP_SIG_ERRVAL,
+	PWRAP_CRC_EN,
+	PWRAP_TIMER_EN,
+	PWRAP_TIMER_STA,
+	PWRAP_WDT_UNIT,
+	PWRAP_WDT_SRC_EN,
+	PWRAP_WDT_FLG,
+	PWRAP_DEBUG_INT_SEL,
+	PWRAP_CIPHER_KEY_SEL,
+	PWRAP_CIPHER_IV_SEL,
+	PWRAP_CIPHER_RDY,
+	PWRAP_CIPHER_MODE,
+	PWRAP_CIPHER_SWRST,
+	PWRAP_DCM_EN,
+	PWRAP_DCM_DBC_PRD,
+
+	/* MT8135 only regs */
+	PWRAP_CSHEXT,
+	PWRAP_EVENT_IN_EN,
+	PWRAP_EVENT_DST_EN,
+	PWRAP_RRARB_INIT,
+	PWRAP_RRARB_EN,
+	PWRAP_RRARB_STA0,
+	PWRAP_RRARB_STA1,
+	PWRAP_EVENT_STA,
+	PWRAP_EVENT_STACLR,
+	PWRAP_CIPHER_LOAD,
+	PWRAP_CIPHER_START,
+
+	/* MT8173 only regs */
+	PWRAP_RDDMY,
+	PWRAP_SI_CK_CON,
+	PWRAP_DVFS_ADR0,
+	PWRAP_DVFS_WDATA0,
+	PWRAP_DVFS_ADR1,
+	PWRAP_DVFS_WDATA1,
+	PWRAP_DVFS_ADR2,
+	PWRAP_DVFS_WDATA2,
+	PWRAP_DVFS_ADR3,
+	PWRAP_DVFS_WDATA3,
+	PWRAP_DVFS_ADR4,
+	PWRAP_DVFS_WDATA4,
+	PWRAP_DVFS_ADR5,
+	PWRAP_DVFS_WDATA5,
+	PWRAP_DVFS_ADR6,
+	PWRAP_DVFS_WDATA6,
+	PWRAP_DVFS_ADR7,
+	PWRAP_DVFS_WDATA7,
+	PWRAP_SPMINF_STA,
+	PWRAP_CIPHER_EN,
+};
+
+static int mt8173_regs[] = {
+	[PWRAP_MUX_SEL] =		0x0,
+	[PWRAP_WRAP_EN] =		0x4,
+	[PWRAP_DIO_EN] =		0x8,
+	[PWRAP_SIDLY] =			0xc,
+	[PWRAP_RDDMY] =			0x10,
+	[PWRAP_SI_CK_CON] =		0x14,
+	[PWRAP_CSHEXT_WRITE] =		0x18,
+	[PWRAP_CSHEXT_READ] =		0x1c,
+	[PWRAP_CSLEXT_START] =		0x20,
+	[PWRAP_CSLEXT_END] =		0x24,
+	[PWRAP_STAUPD_PRD] =		0x28,
+	[PWRAP_STAUPD_GRPEN] =		0x2c,
+	[PWRAP_STAUPD_MAN_TRIG] =	0x40,
+	[PWRAP_STAUPD_STA] =		0x44,
+	[PWRAP_WRAP_STA] =		0x48,
+	[PWRAP_HARB_INIT] =		0x4c,
+	[PWRAP_HARB_HPRIO] =		0x50,
+	[PWRAP_HIPRIO_ARB_EN] =		0x54,
+	[PWRAP_HARB_STA0] =		0x58,
+	[PWRAP_HARB_STA1] =		0x5c,
+	[PWRAP_MAN_EN] =		0x60,
+	[PWRAP_MAN_CMD] =		0x64,
+	[PWRAP_MAN_RDATA] =		0x68,
+	[PWRAP_MAN_VLDCLR] =		0x6c,
+	[PWRAP_WACS0_EN] =		0x70,
+	[PWRAP_INIT_DONE0] =		0x74,
+	[PWRAP_WACS0_CMD] =		0x78,
+	[PWRAP_WACS0_RDATA] =		0x7c,
+	[PWRAP_WACS0_VLDCLR] =		0x80,
+	[PWRAP_WACS1_EN] =		0x84,
+	[PWRAP_INIT_DONE1] =		0x88,
+	[PWRAP_WACS1_CMD] =		0x8c,
+	[PWRAP_WACS1_RDATA] =		0x90,
+	[PWRAP_WACS1_VLDCLR] =		0x94,
+	[PWRAP_WACS2_EN] =		0x98,
+	[PWRAP_INIT_DONE2] =		0x9c,
+	[PWRAP_WACS2_CMD] =		0xa0,
+	[PWRAP_WACS2_RDATA] =		0xa4,
+	[PWRAP_WACS2_VLDCLR] =		0xa8,
+	[PWRAP_INT_EN] =		0xac,
+	[PWRAP_INT_FLG_RAW] =		0xb0,
+	[PWRAP_INT_FLG] =		0xb4,
+	[PWRAP_INT_CLR] =		0xb8,
+	[PWRAP_SIG_ADR] =		0xbc,
+	[PWRAP_SIG_MODE] =		0xc0,
+	[PWRAP_SIG_VALUE] =		0xc4,
+	[PWRAP_SIG_ERRVAL] =		0xc8,
+	[PWRAP_CRC_EN] =		0xcc,
+	[PWRAP_TIMER_EN] =		0xd0,
+	[PWRAP_TIMER_STA] =		0xd4,
+	[PWRAP_WDT_UNIT] =		0xd8,
+	[PWRAP_WDT_SRC_EN] =		0xdc,
+	[PWRAP_WDT_FLG] =		0xe0,
+	[PWRAP_DEBUG_INT_SEL] =		0xe4,
+	[PWRAP_DVFS_ADR0] =		0xe8,
+	[PWRAP_DVFS_WDATA0] =		0xec,
+	[PWRAP_DVFS_ADR1] =		0xf0,
+	[PWRAP_DVFS_WDATA1] =		0xf4,
+	[PWRAP_DVFS_ADR2] =		0xf8,
+	[PWRAP_DVFS_WDATA2] =		0xfc,
+	[PWRAP_DVFS_ADR3] =		0x100,
+	[PWRAP_DVFS_WDATA3] =		0x104,
+	[PWRAP_DVFS_ADR4] =		0x108,
+	[PWRAP_DVFS_WDATA4] =		0x10c,
+	[PWRAP_DVFS_ADR5] =		0x110,
+	[PWRAP_DVFS_WDATA5] =		0x114,
+	[PWRAP_DVFS_ADR6] =		0x118,
+	[PWRAP_DVFS_WDATA6] =		0x11c,
+	[PWRAP_DVFS_ADR7] =		0x120,
+	[PWRAP_DVFS_WDATA7] =		0x124,
+	[PWRAP_SPMINF_STA] =		0x128,
+	[PWRAP_CIPHER_KEY_SEL] =	0x12c,
+	[PWRAP_CIPHER_IV_SEL] =		0x130,
+	[PWRAP_CIPHER_EN] =		0x134,
+	[PWRAP_CIPHER_RDY] =		0x138,
+	[PWRAP_CIPHER_MODE] =		0x13c,
+	[PWRAP_CIPHER_SWRST] =		0x140,
+	[PWRAP_DCM_EN] =		0x144,
+	[PWRAP_DCM_DBC_PRD] =		0x148,
+};
+
+static int mt8135_regs[] = {
+	[PWRAP_MUX_SEL] =		0x0,
+	[PWRAP_WRAP_EN] =		0x4,
+	[PWRAP_DIO_EN] =		0x8,
+	[PWRAP_SIDLY] =			0xc,
+	[PWRAP_CSHEXT] =		0x10,
+	[PWRAP_CSHEXT_WRITE] =		0x14,
+	[PWRAP_CSHEXT_READ] =		0x18,
+	[PWRAP_CSLEXT_START] =		0x1c,
+	[PWRAP_CSLEXT_END] =		0x20,
+	[PWRAP_STAUPD_PRD] =		0x24,
+	[PWRAP_STAUPD_GRPEN] =		0x28,
+	[PWRAP_STAUPD_MAN_TRIG] =	0x2c,
+	[PWRAP_STAUPD_STA] =		0x30,
+	[PWRAP_EVENT_IN_EN] =		0x34,
+	[PWRAP_EVENT_DST_EN] =		0x38,
+	[PWRAP_WRAP_STA] =		0x3c,
+	[PWRAP_RRARB_INIT] =		0x40,
+	[PWRAP_RRARB_EN] =		0x44,
+	[PWRAP_RRARB_STA0] =		0x48,
+	[PWRAP_RRARB_STA1] =		0x4c,
+	[PWRAP_HARB_INIT] =		0x50,
+	[PWRAP_HARB_HPRIO] =		0x54,
+	[PWRAP_HIPRIO_ARB_EN] =		0x58,
+	[PWRAP_HARB_STA0] =		0x5c,
+	[PWRAP_HARB_STA1] =		0x60,
+	[PWRAP_MAN_EN] =		0x64,
+	[PWRAP_MAN_CMD] =		0x68,
+	[PWRAP_MAN_RDATA] =		0x6c,
+	[PWRAP_MAN_VLDCLR] =		0x70,
+	[PWRAP_WACS0_EN] =		0x74,
+	[PWRAP_INIT_DONE0] =		0x78,
+	[PWRAP_WACS0_CMD] =		0x7c,
+	[PWRAP_WACS0_RDATA] =		0x80,
+	[PWRAP_WACS0_VLDCLR] =		0x84,
+	[PWRAP_WACS1_EN] =		0x88,
+	[PWRAP_INIT_DONE1] =		0x8c,
+	[PWRAP_WACS1_CMD] =		0x90,
+	[PWRAP_WACS1_RDATA] =		0x94,
+	[PWRAP_WACS1_VLDCLR] =		0x98,
+	[PWRAP_WACS2_EN] =		0x9c,
+	[PWRAP_INIT_DONE2] =		0xa0,
+	[PWRAP_WACS2_CMD] =		0xa4,
+	[PWRAP_WACS2_RDATA] =		0xa8,
+	[PWRAP_WACS2_VLDCLR] =		0xac,
+	[PWRAP_INT_EN] =		0xb0,
+	[PWRAP_INT_FLG_RAW] =		0xb4,
+	[PWRAP_INT_FLG] =		0xb8,
+	[PWRAP_INT_CLR] =		0xbc,
+	[PWRAP_SIG_ADR] =		0xc0,
+	[PWRAP_SIG_MODE] =		0xc4,
+	[PWRAP_SIG_VALUE] =		0xc8,
+	[PWRAP_SIG_ERRVAL] =		0xcc,
+	[PWRAP_CRC_EN] =		0xd0,
+	[PWRAP_EVENT_STA] =		0xd4,
+	[PWRAP_EVENT_STACLR] =		0xd8,
+	[PWRAP_TIMER_EN] =		0xdc,
+	[PWRAP_TIMER_STA] =		0xe0,
+	[PWRAP_WDT_UNIT] =		0xe4,
+	[PWRAP_WDT_SRC_EN] =		0xe8,
+	[PWRAP_WDT_FLG] =		0xec,
+	[PWRAP_DEBUG_INT_SEL] =		0xf0,
+	[PWRAP_CIPHER_KEY_SEL] =	0x134,
+	[PWRAP_CIPHER_IV_SEL] =		0x138,
+	[PWRAP_CIPHER_LOAD] =		0x13c,
+	[PWRAP_CIPHER_START] =		0x140,
+	[PWRAP_CIPHER_RDY] =		0x144,
+	[PWRAP_CIPHER_MODE] =		0x148,
+	[PWRAP_CIPHER_SWRST] =		0x14c,
+	[PWRAP_DCM_EN] =		0x15c,
+	[PWRAP_DCM_DBC_PRD] =		0x160,
+};
+
+enum pwrap_type {
+	PWRAP_MT8135,
+	PWRAP_MT8173,
+};
+
+struct pmic_wrapper_type {
+	int *regs;
+	enum pwrap_type type;
+	u32 arb_en_all;
+};
+
+static struct pmic_wrapper_type pwrap_mt8135 = {
+	.regs = mt8135_regs,
+	.type = PWRAP_MT8135,
+	.arb_en_all = 0x1ff,
+};
+
+static struct pmic_wrapper_type pwrap_mt8173 = {
+	.regs = mt8173_regs,
+	.type = PWRAP_MT8173,
+	.arb_en_all = 0x3f,
+};
+
+struct pmic_wrapper {
+	struct device *dev;
+	void __iomem *base;
+	struct regmap *regmap;
+	int *regs;
+	enum pwrap_type type;
+	u32 arb_en_all;
+	struct clk *clk_spi;
+	struct clk *clk_wrap;
+	struct reset_control *rstc;
+
+	struct reset_control *rstc_bridge;
+	void __iomem *bridge_base;
+};
+
+static inline int pwrap_is_mt8135(struct pmic_wrapper *wrp)
+{
+	return wrp->type == PWRAP_MT8135;
+}
+
+static inline int pwrap_is_mt8173(struct pmic_wrapper *wrp)
+{
+	return wrp->type == PWRAP_MT8173;
+}
+
+static u32 pwrap_readl(struct pmic_wrapper *wrp, enum pwrap_regs reg)
+{
+	return readl(wrp->base + wrp->regs[reg]);
+}
+
+static void pwrap_writel(struct pmic_wrapper *wrp, u32 val, enum pwrap_regs reg)
+{
+	writel(val, wrp->base + wrp->regs[reg]);
+}
+
+static bool pwrap_is_fsm_idle(struct pmic_wrapper *wrp)
+{
+	u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+
+	return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE;
+}
+
+static bool pwrap_is_fsm_vldclr(struct pmic_wrapper *wrp)
+{
+	u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+
+	return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_WFVLDCLR;
+}
+
+static bool pwrap_is_sync_idle(struct pmic_wrapper *wrp)
+{
+	return pwrap_readl(wrp, PWRAP_WACS2_RDATA) & PWRAP_STATE_SYNC_IDLE0;
+}
+
+static bool pwrap_is_fsm_idle_and_sync_idle(struct pmic_wrapper *wrp)
+{
+	u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA);
+
+	return (PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE) &&
+		(val & PWRAP_STATE_SYNC_IDLE0);
+}
+
+static int pwrap_wait_for_state(struct pmic_wrapper *wrp,
+		bool (*fp)(struct pmic_wrapper *))
+{
+	unsigned long timeout;
+
+	timeout = jiffies + usecs_to_jiffies(255);
+
+	do {
+		if (time_after(jiffies, timeout))
+			return fp(wrp) ? 0 : -ETIMEDOUT;
+		if (fp(wrp))
+			return 0;
+	} while (1);
+}
+
+static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata)
+{
+	int ret;
+
+	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+	if (ret)
+		return ret;
+
+	pwrap_writel(wrp, (1 << 31) | ((adr >> 1) << 16) | wdata,
+			PWRAP_WACS2_CMD);
+
+	return 0;
+}
+
+static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
+{
+	int ret;
+
+	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+	if (ret)
+		return ret;
+
+	pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD);
+
+	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr);
+	if (ret)
+		return ret;
+
+	*rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, PWRAP_WACS2_RDATA));
+
+	pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR);
+
+	return 0;
+}
+
+static int pwrap_regmap_read(void *context, u32 adr, u32 *rdata)
+{
+	return pwrap_read(context, adr, rdata);
+}
+
+static int pwrap_regmap_write(void *context, u32 adr, u32 wdata)
+{
+	return pwrap_write(context, adr, wdata);
+}
+
+static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
+{
+	int ret, i;
+
+	pwrap_writel(wrp, 0, PWRAP_HIPRIO_ARB_EN);
+	pwrap_writel(wrp, 0, PWRAP_WRAP_EN);
+	pwrap_writel(wrp, 1, PWRAP_MUX_SEL);
+	pwrap_writel(wrp, 1, PWRAP_MAN_EN);
+	pwrap_writel(wrp, 0, PWRAP_DIO_EN);
+
+	pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_CSL,
+			PWRAP_MAN_CMD);
+	pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_OUTS,
+			PWRAP_MAN_CMD);
+	pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_CSH,
+			PWRAP_MAN_CMD);
+
+	for (i = 0; i < 4; i++)
+		pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_OUTS,
+				PWRAP_MAN_CMD);
+
+	ret = pwrap_wait_for_state(wrp, pwrap_is_sync_idle);
+	if (ret) {
+		dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
+		return ret;
+	}
+
+	pwrap_writel(wrp, 0, PWRAP_MAN_EN);
+	pwrap_writel(wrp, 0, PWRAP_MUX_SEL);
+
+	return 0;
+}
+
+/*
+ * pwrap_init_sidly - configure serial input delay
+ *
+ * This configures the serial input delay. We can configure 0, 2, 4 or 6ns
+ * delay. Do a read test with all possible values and chose the best delay.
+ */
+static int pwrap_init_sidly(struct pmic_wrapper *wrp)
+{
+	u32 rdata;
+	u32 i;
+	u32 pass = 0;
+	signed char dly[16] = {
+		-1, 0, 1, 0, 2, -1, 1, 1, 3, -1, -1, -1, 3, -1, 2, 1
+	};
+
+	for (i = 0; i < 4; i++) {
+		pwrap_writel(wrp, i, PWRAP_SIDLY);
+		pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata);
+		if (rdata == PWRAP_DEW_READ_TEST_VAL) {
+			dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i);
+			pass |= 1 << i;
+		}
+	}
+
+	if (dly[pass] < 0) {
+		dev_err(wrp->dev, "sidly pass range 0x%x not continuous\n",
+				pass);
+		return -EIO;
+	}
+
+	pwrap_writel(wrp, dly[pass], PWRAP_SIDLY);
+
+	return 0;
+}
+
+static int pwrap_init_reg_clock(struct pmic_wrapper *wrp)
+{
+	if (pwrap_is_mt8135(wrp)) {
+		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT);
+		pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
+		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
+		pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_START);
+		pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_END);
+	} else {
+		pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
+		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
+		pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START);
+		pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END);
+	}
+
+	return 0;
+}
+
+static bool pwrap_is_cipher_ready(struct pmic_wrapper *wrp)
+{
+	return pwrap_readl(wrp, PWRAP_CIPHER_RDY) & 1;
+}
+
+static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp)
+{
+	u32 rdata;
+	int ret;
+
+	ret = pwrap_read(wrp, PWRAP_DEW_CIPHER_RDY, &rdata);
+	if (ret)
+		return 0;
+
+	return rdata == 1;
+}
+
+static int pwrap_init_cipher(struct pmic_wrapper *wrp)
+{
+	int ret;
+	u32 rdata;
+
+	pwrap_writel(wrp, 0x1, PWRAP_CIPHER_SWRST);
+	pwrap_writel(wrp, 0x0, PWRAP_CIPHER_SWRST);
+	pwrap_writel(wrp, 0x1, PWRAP_CIPHER_KEY_SEL);
+	pwrap_writel(wrp, 0x2, PWRAP_CIPHER_IV_SEL);
+
+	if (pwrap_is_mt8135(wrp)) {
+		pwrap_writel(wrp, 1, PWRAP_CIPHER_LOAD);
+		pwrap_writel(wrp, 1, PWRAP_CIPHER_START);
+	} else {
+		pwrap_writel(wrp, 1, PWRAP_CIPHER_EN);
+	}
+
+	/* Config cipher mode @PMIC */
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x1);
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x0);
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_KEY_SEL, 0x1);
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_IV_SEL, 0x2);
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_LOAD, 0x1);
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_START, 0x1);
+
+	/* wait for cipher data ready@AP */
+	ret = pwrap_wait_for_state(wrp, pwrap_is_cipher_ready);
+	if (ret) {
+		dev_err(wrp->dev, "cipher data ready@AP fail, ret=%d\n", ret);
+		return ret;
+	}
+
+	/* wait for cipher data ready@PMIC */
+	ret = pwrap_wait_for_state(wrp, pwrap_is_pmic_cipher_ready);
+	if (ret) {
+		dev_err(wrp->dev, "timeout waiting for cipher data ready@PMIC\n");
+		return ret;
+	}
+
+	/* wait for cipher mode idle */
+	pwrap_write(wrp, PWRAP_DEW_CIPHER_MODE, 0x1);
+	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);
+	if (ret) {
+		dev_err(wrp->dev, "cipher mode idle fail, ret=%d\n", ret);
+		return ret;
+	}
+
+	pwrap_writel(wrp, 1, PWRAP_CIPHER_MODE);
+
+	/* Write Test */
+	if (pwrap_write(wrp, PWRAP_DEW_WRITE_TEST, PWRAP_DEW_WRITE_TEST_VAL) ||
+	    pwrap_read(wrp, PWRAP_DEW_WRITE_TEST, &rdata) ||
+			(rdata != PWRAP_DEW_WRITE_TEST_VAL)) {
+		dev_err(wrp->dev, "rdata=0x%04X\n", rdata);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int pwrap_init(struct pmic_wrapper *wrp)
+{
+	int ret;
+	u32 rdata;
+
+	reset_control_reset(wrp->rstc);
+	if (wrp->rstc_bridge)
+		reset_control_reset(wrp->rstc_bridge);
+
+	if (pwrap_is_mt8173(wrp)) {
+		/* Enable DCM */
+		pwrap_writel(wrp, 3, PWRAP_DCM_EN);
+		pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD);
+	}
+
+	/* Reset SPI slave */
+	ret = pwrap_reset_spislave(wrp);
+	if (ret)
+		return ret;
+
+	pwrap_writel(wrp, 1, PWRAP_WRAP_EN);
+
+	pwrap_writel(wrp, wrp->arb_en_all, PWRAP_HIPRIO_ARB_EN);
+
+	pwrap_writel(wrp, 1, PWRAP_WACS2_EN);
+
+	ret = pwrap_init_reg_clock(wrp);
+	if (ret)
+		return ret;
+
+	/* Setup serial input delay */
+	ret = pwrap_init_sidly(wrp);
+	if (ret)
+		return ret;
+
+	/* Enable dual IO mode */
+	pwrap_write(wrp, PWRAP_DEW_DIO_EN, 1);
+
+	/* Check IDLE & INIT_DONE in advance */
+	ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);
+	if (ret) {
+		dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
+		return ret;
+	}
+
+	pwrap_writel(wrp, 1, PWRAP_DIO_EN);
+
+	/* Read Test */
+	pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata);
+	if (rdata != PWRAP_DEW_READ_TEST_VAL) {
+		dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n",
+				PWRAP_DEW_READ_TEST_VAL, rdata);
+		return -EFAULT;
+	}
+
+	/* Enable encryption */
+	ret = pwrap_init_cipher(wrp);
+	if (ret)
+		return ret;
+
+	/* Signature checking - using CRC */
+	if (pwrap_write(wrp, PWRAP_DEW_CRC_EN, 0x1))
+		return -EFAULT;
+
+	pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
+	pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
+	pwrap_writel(wrp, PWRAP_DEW_CRC_VAL, PWRAP_SIG_ADR);
+	pwrap_writel(wrp, wrp->arb_en_all, PWRAP_HIPRIO_ARB_EN);
+
+	if (pwrap_is_mt8135(wrp))
+		pwrap_writel(wrp, 0x7, PWRAP_RRARB_EN);
+
+	pwrap_writel(wrp, 0x1, PWRAP_WACS0_EN);
+	pwrap_writel(wrp, 0x1, PWRAP_WACS1_EN);
+	pwrap_writel(wrp, 0x1, PWRAP_WACS2_EN);
+	pwrap_writel(wrp, 0x5, PWRAP_STAUPD_PRD);
+	pwrap_writel(wrp, 0xff, PWRAP_STAUPD_GRPEN);
+	pwrap_writel(wrp, 0xf, PWRAP_WDT_UNIT);
+	pwrap_writel(wrp, 0xffffffff, PWRAP_WDT_SRC_EN);
+	pwrap_writel(wrp, 0x1, PWRAP_TIMER_EN);
+	pwrap_writel(wrp, ~((1 << 31) | (1 << 1)), PWRAP_INT_EN);
+
+	if (pwrap_is_mt8135(wrp)) {
+		/* enable pwrap events and pwrap bridge in AP side */
+		pwrap_writel(wrp, 0x1, PWRAP_EVENT_IN_EN);
+		pwrap_writel(wrp, 0xffff, PWRAP_EVENT_DST_EN);
+		writel(0x7f, wrp->bridge_base + PWRAP_MT8135_BRIDGE_IORD_ARB_EN);
+		writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WACS3_EN);
+		writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WACS4_EN);
+		writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WDT_UNIT);
+		writel(0xffff, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WDT_SRC_EN);
+		writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_TIMER_EN);
+		writel(0x7ff, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INT_EN);
+
+		/* enable PMIC event out and sources */
+		if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) ||
+				pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) {
+			dev_err(wrp->dev, "enable dewrap fail\n");
+			return -EFAULT;
+		}
+	} else {
+		/* PMIC_DEWRAP enables */
+		if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) ||
+				pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) {
+			dev_err(wrp->dev, "enable dewrap fail\n");
+			return -EFAULT;
+		}
+	}
+
+	/* Setup the init done registers */
+	pwrap_writel(wrp, 1, PWRAP_INIT_DONE2);
+	pwrap_writel(wrp, 1, PWRAP_INIT_DONE0);
+	pwrap_writel(wrp, 1, PWRAP_INIT_DONE1);
+
+	if (pwrap_is_mt8135(wrp)) {
+		writel(1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INIT_DONE3);
+		writel(1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INIT_DONE4);
+	}
+
+	return 0;
+}
+
+static irqreturn_t pwrap_interrupt(int irqno, void *dev_id)
+{
+	u32 rdata;
+	struct pmic_wrapper *wrp = dev_id;
+
+	rdata = pwrap_readl(wrp, PWRAP_INT_FLG);
+
+	dev_err(wrp->dev, "unexpected interrupt int=0x%x\n", rdata);
+
+	pwrap_writel(wrp, 0xffffffff, PWRAP_INT_CLR);
+
+	return IRQ_HANDLED;
+}
+
+static const struct regmap_config pwrap_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 16,
+	.reg_stride = 2,
+	.reg_read = pwrap_regmap_read,
+	.reg_write = pwrap_regmap_write,
+	.max_register = 0xffff,
+};
+
+static struct of_device_id of_pwrap_match_tbl[] = {
+	{
+		.compatible = "mediatek,mt8135-pwrap",
+		.data = &pwrap_mt8135,
+	}, {
+		.compatible = "mediatek,mt8173-pwrap",
+		.data = &pwrap_mt8173,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(of, of_pwrap_match_tbl);
+
+static int pwrap_probe(struct platform_device *pdev)
+{
+	int ret, irq;
+	struct pmic_wrapper *wrp;
+	struct device_node *np = pdev->dev.of_node;
+	const struct of_device_id *of_id =
+		of_match_device(of_pwrap_match_tbl, &pdev->dev);
+	const struct pmic_wrapper_type *type;
+	struct resource *res;
+
+	wrp = devm_kzalloc(&pdev->dev, sizeof(*wrp), GFP_KERNEL);
+	if (!wrp)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, wrp);
+
+	type = of_id->data;
+	wrp->regs = type->regs;
+	wrp->type = type->type;
+	wrp->arb_en_all = type->arb_en_all;
+	wrp->dev = &pdev->dev;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwrap");
+	wrp->base = devm_ioremap_resource(wrp->dev, res);
+	if (IS_ERR(wrp->base))
+		return PTR_ERR(wrp->base);
+
+	wrp->rstc = devm_reset_control_get(wrp->dev, "pwrap");
+	if (IS_ERR(wrp->rstc)) {
+		ret = PTR_ERR(wrp->rstc);
+		dev_dbg(wrp->dev, "cannot get pwrap reset: %d\n", ret);
+		return ret;
+	}
+
+	if (pwrap_is_mt8135(wrp)) {
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+				"pwrap-bridge");
+		wrp->bridge_base = devm_ioremap_resource(wrp->dev, res);
+		if (IS_ERR(wrp->bridge_base))
+			return PTR_ERR(wrp->bridge_base);
+
+		wrp->rstc_bridge = devm_reset_control_get(wrp->dev, "pwrap-bridge");
+		if (IS_ERR(wrp->rstc_bridge)) {
+			ret = PTR_ERR(wrp->rstc_bridge);
+			dev_dbg(wrp->dev, "cannot get pwrap-bridge reset: %d\n", ret);
+			return ret;
+		}
+	}
+
+	wrp->clk_spi = devm_clk_get(wrp->dev, "spi");
+	if (IS_ERR(wrp->clk_spi)) {
+		dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_spi));
+		return PTR_ERR(wrp->clk_spi);
+	}
+
+	wrp->clk_wrap = devm_clk_get(wrp->dev, "wrap");
+	if (IS_ERR(wrp->clk_wrap)) {
+		dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_wrap));
+		return PTR_ERR(wrp->clk_wrap);
+	}
+
+	ret = clk_prepare_enable(wrp->clk_spi);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(wrp->clk_wrap);
+	if (ret)
+		goto err_out1;
+
+	/* Enable internal dynamic clock */
+	pwrap_writel(wrp, 1, PWRAP_DCM_EN);
+	pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD);
+
+	/*
+	 * The PMIC could already be initialized by the bootloader.
+	 * Skip initialization here in this case.
+	 */
+	if (!pwrap_readl(wrp, PWRAP_INIT_DONE2)) {
+		ret = pwrap_init(wrp);
+		if (ret) {
+			dev_dbg(wrp->dev, "init failed with %d\n", ret);
+			goto err_out2;
+		}
+	}
+
+	if (!(pwrap_readl(wrp, PWRAP_WACS2_RDATA) & PWRAP_STATE_INIT_DONE0)) {
+		dev_dbg(wrp->dev, "initialization isn't finished\n");
+		return -ENODEV;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	ret = devm_request_irq(wrp->dev, irq, pwrap_interrupt, IRQF_TRIGGER_HIGH,
+			"mt-pmic-pwrap", wrp);
+	if (ret)
+		goto err_out2;
+
+	wrp->regmap = devm_regmap_init(wrp->dev, NULL, wrp, &pwrap_regmap_config);
+	if (IS_ERR(wrp->regmap))
+		return PTR_ERR(wrp->regmap);
+
+	ret = of_platform_populate(np, NULL, NULL, wrp->dev);
+	if (ret) {
+		dev_dbg(wrp->dev, "failed to create child devices at %s\n",
+				np->full_name);
+		goto err_out2;
+	}
+
+	return 0;
+
+err_out2:
+	clk_disable_unprepare(wrp->clk_wrap);
+err_out1:
+	clk_disable_unprepare(wrp->clk_spi);
+
+	return ret;
+}
+
+static struct platform_driver pwrap_drv = {
+	.driver = {
+		.name = "mt-pmic-pwrap",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(of_pwrap_match_tbl),
+	},
+	.probe = pwrap_probe,
+};
+
+module_platform_driver(pwrap_drv);
+
+MODULE_AUTHOR("Flora Fu, MediaTek");
+MODULE_DESCRIPTION("MediaTek MT8135 PMIC Wrapper Driver");
+MODULE_LICENSE("GPL v2");