Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1704 insertions, 0 deletions

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
new file mode 100644
index 0000000000..dcb675d980
--- /dev/null
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -0,0 +1,1704 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2012-2015, 2017, 2021, The Linux Foundation. All rights reserved.
+ */
+#include <linux/bitmap.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spmi.h>
+
+/* PMIC Arbiter configuration registers */
+#define PMIC_ARB_VERSION		0x0000
+#define PMIC_ARB_VERSION_V2_MIN		0x20010000
+#define PMIC_ARB_VERSION_V3_MIN		0x30000000
+#define PMIC_ARB_VERSION_V5_MIN		0x50000000
+#define PMIC_ARB_VERSION_V7_MIN		0x70000000
+#define PMIC_ARB_INT_EN			0x0004
+
+#define PMIC_ARB_FEATURES		0x0004
+#define PMIC_ARB_FEATURES_PERIPH_MASK	GENMASK(10, 0)
+
+#define PMIC_ARB_FEATURES1		0x0008
+
+/* PMIC Arbiter channel registers offsets */
+#define PMIC_ARB_CMD			0x00
+#define PMIC_ARB_CONFIG			0x04
+#define PMIC_ARB_STATUS			0x08
+#define PMIC_ARB_WDATA0			0x10
+#define PMIC_ARB_WDATA1			0x14
+#define PMIC_ARB_RDATA0			0x18
+#define PMIC_ARB_RDATA1			0x1C
+
+/* Mapping Table */
+#define SPMI_MAPPING_TABLE_REG(N)	(0x0B00 + (4 * (N)))
+#define SPMI_MAPPING_BIT_INDEX(X)	(((X) >> 18) & 0xF)
+#define SPMI_MAPPING_BIT_IS_0_FLAG(X)	(((X) >> 17) & 0x1)
+#define SPMI_MAPPING_BIT_IS_0_RESULT(X)	(((X) >> 9) & 0xFF)
+#define SPMI_MAPPING_BIT_IS_1_FLAG(X)	(((X) >> 8) & 0x1)
+#define SPMI_MAPPING_BIT_IS_1_RESULT(X)	(((X) >> 0) & 0xFF)
+
+#define SPMI_MAPPING_TABLE_TREE_DEPTH	16	/* Maximum of 16-bits */
+#define PMIC_ARB_MAX_PPID		BIT(12) /* PPID is 12bit */
+#define PMIC_ARB_APID_VALID		BIT(15)
+#define PMIC_ARB_CHAN_IS_IRQ_OWNER(reg)	((reg) & BIT(24))
+#define INVALID_EE				0xFF
+
+/* Ownership Table */
+#define SPMI_OWNERSHIP_PERIPH2OWNER(X)	((X) & 0x7)
+
+/* Channel Status fields */
+enum pmic_arb_chnl_status {
+	PMIC_ARB_STATUS_DONE	= BIT(0),
+	PMIC_ARB_STATUS_FAILURE	= BIT(1),
+	PMIC_ARB_STATUS_DENIED	= BIT(2),
+	PMIC_ARB_STATUS_DROPPED	= BIT(3),
+};
+
+/* Command register fields */
+#define PMIC_ARB_CMD_MAX_BYTE_COUNT	8
+
+/* Command Opcodes */
+enum pmic_arb_cmd_op_code {
+	PMIC_ARB_OP_EXT_WRITEL = 0,
+	PMIC_ARB_OP_EXT_READL = 1,
+	PMIC_ARB_OP_EXT_WRITE = 2,
+	PMIC_ARB_OP_RESET = 3,
+	PMIC_ARB_OP_SLEEP = 4,
+	PMIC_ARB_OP_SHUTDOWN = 5,
+	PMIC_ARB_OP_WAKEUP = 6,
+	PMIC_ARB_OP_AUTHENTICATE = 7,
+	PMIC_ARB_OP_MSTR_READ = 8,
+	PMIC_ARB_OP_MSTR_WRITE = 9,
+	PMIC_ARB_OP_EXT_READ = 13,
+	PMIC_ARB_OP_WRITE = 14,
+	PMIC_ARB_OP_READ = 15,
+	PMIC_ARB_OP_ZERO_WRITE = 16,
+};
+
+/*
+ * PMIC arbiter version 5 uses different register offsets for read/write vs
+ * observer channels.
+ */
+enum pmic_arb_channel {
+	PMIC_ARB_CHANNEL_RW,
+	PMIC_ARB_CHANNEL_OBS,
+};
+
+/* Maximum number of support PMIC peripherals */
+#define PMIC_ARB_MAX_PERIPHS		512
+#define PMIC_ARB_MAX_PERIPHS_V7		1024
+#define PMIC_ARB_TIMEOUT_US		1000
+#define PMIC_ARB_MAX_TRANS_BYTES	(8)
+
+#define PMIC_ARB_APID_MASK		0xFF
+#define PMIC_ARB_PPID_MASK		0xFFF
+
+/* interrupt enable bit */
+#define SPMI_PIC_ACC_ENABLE_BIT		BIT(0)
+
+#define spec_to_hwirq(slave_id, periph_id, irq_id, apid) \
+	((((slave_id) & 0xF)   << 28) | \
+	(((periph_id) & 0xFF)  << 20) | \
+	(((irq_id)    & 0x7)   << 16) | \
+	(((apid)      & 0x3FF) << 0))
+
+#define hwirq_to_sid(hwirq)  (((hwirq) >> 28) & 0xF)
+#define hwirq_to_per(hwirq)  (((hwirq) >> 20) & 0xFF)
+#define hwirq_to_irq(hwirq)  (((hwirq) >> 16) & 0x7)
+#define hwirq_to_apid(hwirq) (((hwirq) >> 0)  & 0x3FF)
+
+struct pmic_arb_ver_ops;
+
+struct apid_data {
+	u16		ppid;
+	u8		write_ee;
+	u8		irq_ee;
+};
+
+/**
+ * struct spmi_pmic_arb - SPMI PMIC Arbiter object
+ *
+ * @rd_base:		on v1 "core", on v2 "observer" register base off DT.
+ * @wr_base:		on v1 "core", on v2 "chnls"    register base off DT.
+ * @intr:		address of the SPMI interrupt control registers.
+ * @cnfg:		address of the PMIC Arbiter configuration registers.
+ * @lock:		lock to synchronize accesses.
+ * @channel:		execution environment channel to use for accesses.
+ * @irq:		PMIC ARB interrupt.
+ * @ee:			the current Execution Environment
+ * @bus_instance:	on v7: 0 = primary SPMI bus, 1 = secondary SPMI bus
+ * @min_apid:		minimum APID (used for bounding IRQ search)
+ * @max_apid:		maximum APID
+ * @base_apid:		on v7: minimum APID associated with the particular SPMI
+ *			bus instance
+ * @apid_count:		on v5 and v7: number of APIDs associated with the
+ *			particular SPMI bus instance
+ * @mapping_table:	in-memory copy of PPID -> APID mapping table.
+ * @domain:		irq domain object for PMIC IRQ domain
+ * @spmic:		SPMI controller object
+ * @ver_ops:		version dependent operations.
+ * @ppid_to_apid:	in-memory copy of PPID -> APID mapping table.
+ * @last_apid:		Highest value APID in use
+ * @apid_data:		Table of data for all APIDs
+ * @max_periphs:	Number of elements in apid_data[]
+ */
+struct spmi_pmic_arb {
+	void __iomem		*rd_base;
+	void __iomem		*wr_base;
+	void __iomem		*intr;
+	void __iomem		*cnfg;
+	void __iomem		*core;
+	resource_size_t		core_size;
+	raw_spinlock_t		lock;
+	u8			channel;
+	int			irq;
+	u8			ee;
+	u32			bus_instance;
+	u16			min_apid;
+	u16			max_apid;
+	u16			base_apid;
+	int			apid_count;
+	u32			*mapping_table;
+	DECLARE_BITMAP(mapping_table_valid, PMIC_ARB_MAX_PERIPHS);
+	struct irq_domain	*domain;
+	struct spmi_controller	*spmic;
+	const struct pmic_arb_ver_ops *ver_ops;
+	u16			*ppid_to_apid;
+	u16			last_apid;
+	struct apid_data	*apid_data;
+	int			max_periphs;
+};
+
+/**
+ * struct pmic_arb_ver_ops - version dependent functionality.
+ *
+ * @ver_str:		version string.
+ * @ppid_to_apid:	finds the apid for a given ppid.
+ * @non_data_cmd:	on v1 issues an spmi non-data command.
+ *			on v2 no HW support, returns -EOPNOTSUPP.
+ * @offset:		on v1 offset of per-ee channel.
+ *			on v2 offset of per-ee and per-ppid channel.
+ * @fmt_cmd:		formats a GENI/SPMI command.
+ * @owner_acc_status:	on v1 address of PMIC_ARB_SPMI_PIC_OWNERm_ACC_STATUSn
+ *			on v2 address of SPMI_PIC_OWNERm_ACC_STATUSn.
+ * @acc_enable:		on v1 address of PMIC_ARB_SPMI_PIC_ACC_ENABLEn
+ *			on v2 address of SPMI_PIC_ACC_ENABLEn.
+ * @irq_status:		on v1 address of PMIC_ARB_SPMI_PIC_IRQ_STATUSn
+ *			on v2 address of SPMI_PIC_IRQ_STATUSn.
+ * @irq_clear:		on v1 address of PMIC_ARB_SPMI_PIC_IRQ_CLEARn
+ *			on v2 address of SPMI_PIC_IRQ_CLEARn.
+ * @apid_map_offset:	offset of PMIC_ARB_REG_CHNLn
+ * @apid_owner:		on v2 and later address of SPMI_PERIPHn_2OWNER_TABLE_REG
+ */
+struct pmic_arb_ver_ops {
+	const char *ver_str;
+	int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u16 ppid);
+	/* spmi commands (read_cmd, write_cmd, cmd) functionality */
+	int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+			enum pmic_arb_channel ch_type);
+	u32 (*fmt_cmd)(u8 opc, u8 sid, u16 addr, u8 bc);
+	int (*non_data_cmd)(struct spmi_controller *ctrl, u8 opc, u8 sid);
+	/* Interrupts controller functionality (offset of PIC registers) */
+	void __iomem *(*owner_acc_status)(struct spmi_pmic_arb *pmic_arb, u8 m,
+					  u16 n);
+	void __iomem *(*acc_enable)(struct spmi_pmic_arb *pmic_arb, u16 n);
+	void __iomem *(*irq_status)(struct spmi_pmic_arb *pmic_arb, u16 n);
+	void __iomem *(*irq_clear)(struct spmi_pmic_arb *pmic_arb, u16 n);
+	u32 (*apid_map_offset)(u16 n);
+	void __iomem *(*apid_owner)(struct spmi_pmic_arb *pmic_arb, u16 n);
+};
+
+static inline void pmic_arb_base_write(struct spmi_pmic_arb *pmic_arb,
+				       u32 offset, u32 val)
+{
+	writel_relaxed(val, pmic_arb->wr_base + offset);
+}
+
+static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb *pmic_arb,
+				       u32 offset, u32 val)
+{
+	writel_relaxed(val, pmic_arb->rd_base + offset);
+}
+
+/**
+ * pmic_arb_read_data: reads pmic-arb's register and copy 1..4 bytes to buf
+ * @bc:		byte count -1. range: 0..3
+ * @reg:	register's address
+ * @buf:	output parameter, length must be bc + 1
+ */
+static void
+pmic_arb_read_data(struct spmi_pmic_arb *pmic_arb, u8 *buf, u32 reg, u8 bc)
+{
+	u32 data = __raw_readl(pmic_arb->rd_base + reg);
+
+	memcpy(buf, &data, (bc & 3) + 1);
+}
+
+/**
+ * pmic_arb_write_data: write 1..4 bytes from buf to pmic-arb's register
+ * @bc:		byte-count -1. range: 0..3.
+ * @reg:	register's address.
+ * @buf:	buffer to write. length must be bc + 1.
+ */
+static void pmic_arb_write_data(struct spmi_pmic_arb *pmic_arb, const u8 *buf,
+				u32 reg, u8 bc)
+{
+	u32 data = 0;
+
+	memcpy(&data, buf, (bc & 3) + 1);
+	__raw_writel(data, pmic_arb->wr_base + reg);
+}
+
+static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
+				  void __iomem *base, u8 sid, u16 addr,
+				  enum pmic_arb_channel ch_type)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	u32 status = 0;
+	u32 timeout = PMIC_ARB_TIMEOUT_US;
+	u32 offset;
+	int rc;
+
+	rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, ch_type);
+	if (rc < 0)
+		return rc;
+
+	offset = rc;
+	offset += PMIC_ARB_STATUS;
+
+	while (timeout--) {
+		status = readl_relaxed(base + offset);
+
+		if (status & PMIC_ARB_STATUS_DONE) {
+			if (status & PMIC_ARB_STATUS_DENIED) {
+				dev_err(&ctrl->dev, "%s: %#x %#x: transaction denied (%#x)\n",
+					__func__, sid, addr, status);
+				return -EPERM;
+			}
+
+			if (status & PMIC_ARB_STATUS_FAILURE) {
+				dev_err(&ctrl->dev, "%s: %#x %#x: transaction failed (%#x)\n",
+					__func__, sid, addr, status);
+				WARN_ON(1);
+				return -EIO;
+			}
+
+			if (status & PMIC_ARB_STATUS_DROPPED) {
+				dev_err(&ctrl->dev, "%s: %#x %#x: transaction dropped (%#x)\n",
+					__func__, sid, addr, status);
+				return -EIO;
+			}
+
+			return 0;
+		}
+		udelay(1);
+	}
+
+	dev_err(&ctrl->dev, "%s: %#x %#x: timeout, status %#x\n",
+		__func__, sid, addr, status);
+	return -ETIMEDOUT;
+}
+
+static int
+pmic_arb_non_data_cmd_v1(struct spmi_controller *ctrl, u8 opc, u8 sid)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	unsigned long flags;
+	u32 cmd;
+	int rc;
+	u32 offset;
+
+	rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0, PMIC_ARB_CHANNEL_RW);
+	if (rc < 0)
+		return rc;
+
+	offset = rc;
+	cmd = ((opc | 0x40) << 27) | ((sid & 0xf) << 20);
+
+	raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+	pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+	rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, 0,
+				    PMIC_ARB_CHANNEL_RW);
+	raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
+
+	return rc;
+}
+
+static int
+pmic_arb_non_data_cmd_v2(struct spmi_controller *ctrl, u8 opc, u8 sid)
+{
+	return -EOPNOTSUPP;
+}
+
+/* Non-data command */
+static int pmic_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+
+	dev_dbg(&ctrl->dev, "cmd op:0x%x sid:%d\n", opc, sid);
+
+	/* Check for valid non-data command */
+	if (opc < SPMI_CMD_RESET || opc > SPMI_CMD_WAKEUP)
+		return -EINVAL;
+
+	return pmic_arb->ver_ops->non_data_cmd(ctrl, opc, sid);
+}
+
+static int pmic_arb_fmt_read_cmd(struct spmi_pmic_arb *pmic_arb, u8 opc, u8 sid,
+				 u16 addr, size_t len, u32 *cmd, u32 *offset)
+{
+	u8 bc = len - 1;
+	int rc;
+
+	rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr,
+				       PMIC_ARB_CHANNEL_OBS);
+	if (rc < 0)
+		return rc;
+
+	*offset = rc;
+	if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
+		dev_err(&pmic_arb->spmic->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
+			PMIC_ARB_MAX_TRANS_BYTES, len);
+		return  -EINVAL;
+	}
+
+	/* Check the opcode */
+	if (opc >= 0x60 && opc <= 0x7F)
+		opc = PMIC_ARB_OP_READ;
+	else if (opc >= 0x20 && opc <= 0x2F)
+		opc = PMIC_ARB_OP_EXT_READ;
+	else if (opc >= 0x38 && opc <= 0x3F)
+		opc = PMIC_ARB_OP_EXT_READL;
+	else
+		return -EINVAL;
+
+	*cmd = pmic_arb->ver_ops->fmt_cmd(opc, sid, addr, bc);
+
+	return 0;
+}
+
+static int pmic_arb_read_cmd_unlocked(struct spmi_controller *ctrl, u32 cmd,
+				      u32 offset, u8 sid, u16 addr, u8 *buf,
+				      size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	u8 bc = len - 1;
+	int rc;
+
+	pmic_arb_set_rd_cmd(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+	rc = pmic_arb_wait_for_done(ctrl, pmic_arb->rd_base, sid, addr,
+				    PMIC_ARB_CHANNEL_OBS);
+	if (rc)
+		return rc;
+
+	pmic_arb_read_data(pmic_arb, buf, offset + PMIC_ARB_RDATA0,
+		     min_t(u8, bc, 3));
+
+	if (bc > 3)
+		pmic_arb_read_data(pmic_arb, buf + 4, offset + PMIC_ARB_RDATA1,
+					bc - 4);
+	return 0;
+}
+
+static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
+			     u16 addr, u8 *buf, size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	unsigned long flags;
+	u32 cmd, offset;
+	int rc;
+
+	rc = pmic_arb_fmt_read_cmd(pmic_arb, opc, sid, addr, len, &cmd,
+				   &offset);
+	if (rc)
+		return rc;
+
+	raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+	rc = pmic_arb_read_cmd_unlocked(ctrl, cmd, offset, sid, addr, buf, len);
+	raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
+
+	return rc;
+}
+
+static int pmic_arb_fmt_write_cmd(struct spmi_pmic_arb *pmic_arb, u8 opc,
+				  u8 sid, u16 addr, size_t len, u32 *cmd,
+				  u32 *offset)
+{
+	u8 bc = len - 1;
+	int rc;
+
+	rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr,
+					PMIC_ARB_CHANNEL_RW);
+	if (rc < 0)
+		return rc;
+
+	*offset = rc;
+	if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
+		dev_err(&pmic_arb->spmic->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
+			PMIC_ARB_MAX_TRANS_BYTES, len);
+		return  -EINVAL;
+	}
+
+	/* Check the opcode */
+	if (opc >= 0x40 && opc <= 0x5F)
+		opc = PMIC_ARB_OP_WRITE;
+	else if (opc <= 0x0F)
+		opc = PMIC_ARB_OP_EXT_WRITE;
+	else if (opc >= 0x30 && opc <= 0x37)
+		opc = PMIC_ARB_OP_EXT_WRITEL;
+	else if (opc >= 0x80)
+		opc = PMIC_ARB_OP_ZERO_WRITE;
+	else
+		return -EINVAL;
+
+	*cmd = pmic_arb->ver_ops->fmt_cmd(opc, sid, addr, bc);
+
+	return 0;
+}
+
+static int pmic_arb_write_cmd_unlocked(struct spmi_controller *ctrl, u32 cmd,
+				      u32 offset, u8 sid, u16 addr,
+				      const u8 *buf, size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	u8 bc = len - 1;
+
+	/* Write data to FIFOs */
+	pmic_arb_write_data(pmic_arb, buf, offset + PMIC_ARB_WDATA0,
+				min_t(u8, bc, 3));
+	if (bc > 3)
+		pmic_arb_write_data(pmic_arb, buf + 4, offset + PMIC_ARB_WDATA1,
+					bc - 4);
+
+	/* Start the transaction */
+	pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+	return pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, addr,
+				      PMIC_ARB_CHANNEL_RW);
+}
+
+static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
+			      u16 addr, const u8 *buf, size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	unsigned long flags;
+	u32 cmd, offset;
+	int rc;
+
+	rc = pmic_arb_fmt_write_cmd(pmic_arb, opc, sid, addr, len, &cmd,
+				    &offset);
+	if (rc)
+		return rc;
+
+	raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+	rc = pmic_arb_write_cmd_unlocked(ctrl, cmd, offset, sid, addr, buf,
+					 len);
+	raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
+
+	return rc;
+}
+
+static int pmic_arb_masked_write(struct spmi_controller *ctrl, u8 sid, u16 addr,
+				 const u8 *buf, const u8 *mask, size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	u32 read_cmd, read_offset, write_cmd, write_offset;
+	u8 temp[PMIC_ARB_MAX_TRANS_BYTES];
+	unsigned long flags;
+	int rc, i;
+
+	rc = pmic_arb_fmt_read_cmd(pmic_arb, SPMI_CMD_EXT_READL, sid, addr, len,
+				   &read_cmd, &read_offset);
+	if (rc)
+		return rc;
+
+	rc = pmic_arb_fmt_write_cmd(pmic_arb, SPMI_CMD_EXT_WRITEL, sid, addr,
+				    len, &write_cmd, &write_offset);
+	if (rc)
+		return rc;
+
+	raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+	rc = pmic_arb_read_cmd_unlocked(ctrl, read_cmd, read_offset, sid, addr,
+					temp, len);
+	if (rc)
+		goto done;
+
+	for (i = 0; i < len; i++)
+		temp[i] = (temp[i] & ~mask[i]) | (buf[i] & mask[i]);
+
+	rc = pmic_arb_write_cmd_unlocked(ctrl, write_cmd, write_offset, sid,
+					 addr, temp, len);
+done:
+	raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
+
+	return rc;
+}
+
+enum qpnpint_regs {
+	QPNPINT_REG_RT_STS		= 0x10,
+	QPNPINT_REG_SET_TYPE		= 0x11,
+	QPNPINT_REG_POLARITY_HIGH	= 0x12,
+	QPNPINT_REG_POLARITY_LOW	= 0x13,
+	QPNPINT_REG_LATCHED_CLR		= 0x14,
+	QPNPINT_REG_EN_SET		= 0x15,
+	QPNPINT_REG_EN_CLR		= 0x16,
+	QPNPINT_REG_LATCHED_STS		= 0x18,
+};
+
+struct spmi_pmic_arb_qpnpint_type {
+	u8 type; /* 1 -> edge */
+	u8 polarity_high;
+	u8 polarity_low;
+} __packed;
+
+/* Simplified accessor functions for irqchip callbacks */
+static void qpnpint_spmi_write(struct irq_data *d, u8 reg, void *buf,
+			       size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	u8 sid = hwirq_to_sid(d->hwirq);
+	u8 per = hwirq_to_per(d->hwirq);
+
+	if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid,
+			       (per << 8) + reg, buf, len))
+		dev_err_ratelimited(&pmic_arb->spmic->dev, "failed irqchip transaction on %x\n",
+				    d->irq);
+}
+
+static void qpnpint_spmi_read(struct irq_data *d, u8 reg, void *buf, size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	u8 sid = hwirq_to_sid(d->hwirq);
+	u8 per = hwirq_to_per(d->hwirq);
+
+	if (pmic_arb_read_cmd(pmic_arb->spmic, SPMI_CMD_EXT_READL, sid,
+			      (per << 8) + reg, buf, len))
+		dev_err_ratelimited(&pmic_arb->spmic->dev, "failed irqchip transaction on %x\n",
+				    d->irq);
+}
+
+static int qpnpint_spmi_masked_write(struct irq_data *d, u8 reg,
+				     const void *buf, const void *mask,
+				     size_t len)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	u8 sid = hwirq_to_sid(d->hwirq);
+	u8 per = hwirq_to_per(d->hwirq);
+	int rc;
+
+	rc = pmic_arb_masked_write(pmic_arb->spmic, sid, (per << 8) + reg, buf,
+				   mask, len);
+	if (rc)
+		dev_err_ratelimited(&pmic_arb->spmic->dev, "failed irqchip transaction on %x rc=%d\n",
+				    d->irq, rc);
+	return rc;
+}
+
+static void cleanup_irq(struct spmi_pmic_arb *pmic_arb, u16 apid, int id)
+{
+	u16 ppid = pmic_arb->apid_data[apid].ppid;
+	u8 sid = ppid >> 8;
+	u8 per = ppid & 0xFF;
+	u8 irq_mask = BIT(id);
+
+	dev_err_ratelimited(&pmic_arb->spmic->dev, "%s apid=%d sid=0x%x per=0x%x irq=%d\n",
+			__func__, apid, sid, per, id);
+	writel_relaxed(irq_mask, pmic_arb->ver_ops->irq_clear(pmic_arb, apid));
+}
+
+static int periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid)
+{
+	unsigned int irq;
+	u32 status, id;
+	int handled = 0;
+	u8 sid = (pmic_arb->apid_data[apid].ppid >> 8) & 0xF;
+	u8 per = pmic_arb->apid_data[apid].ppid & 0xFF;
+
+	status = readl_relaxed(pmic_arb->ver_ops->irq_status(pmic_arb, apid));
+	while (status) {
+		id = ffs(status) - 1;
+		status &= ~BIT(id);
+		irq = irq_find_mapping(pmic_arb->domain,
+					spec_to_hwirq(sid, per, id, apid));
+		if (irq == 0) {
+			cleanup_irq(pmic_arb, apid, id);
+			continue;
+		}
+		generic_handle_irq(irq);
+		handled++;
+	}
+
+	return handled;
+}
+
+static void pmic_arb_chained_irq(struct irq_desc *desc)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_desc_get_handler_data(desc);
+	const struct pmic_arb_ver_ops *ver_ops = pmic_arb->ver_ops;
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+	int first = pmic_arb->min_apid;
+	int last = pmic_arb->max_apid;
+	/*
+	 * acc_offset will be non-zero for the secondary SPMI bus instance on
+	 * v7 controllers.
+	 */
+	int acc_offset = pmic_arb->base_apid >> 5;
+	u8 ee = pmic_arb->ee;
+	u32 status, enable, handled = 0;
+	int i, id, apid;
+	/* status based dispatch */
+	bool acc_valid = false;
+	u32 irq_status = 0;
+
+	chained_irq_enter(chip, desc);
+
+	for (i = first >> 5; i <= last >> 5; ++i) {
+		status = readl_relaxed(ver_ops->owner_acc_status(pmic_arb, ee, i - acc_offset));
+		if (status)
+			acc_valid = true;
+
+		while (status) {
+			id = ffs(status) - 1;
+			status &= ~BIT(id);
+			apid = id + i * 32;
+			if (apid < first || apid > last) {
+				WARN_ONCE(true, "spurious spmi irq received for apid=%d\n",
+					apid);
+				continue;
+			}
+			enable = readl_relaxed(
+					ver_ops->acc_enable(pmic_arb, apid));
+			if (enable & SPMI_PIC_ACC_ENABLE_BIT)
+				if (periph_interrupt(pmic_arb, apid) != 0)
+					handled++;
+		}
+	}
+
+	/* ACC_STATUS is empty but IRQ fired check IRQ_STATUS */
+	if (!acc_valid) {
+		for (i = first; i <= last; i++) {
+			/* skip if APPS is not irq owner */
+			if (pmic_arb->apid_data[i].irq_ee != pmic_arb->ee)
+				continue;
+
+			irq_status = readl_relaxed(
+					     ver_ops->irq_status(pmic_arb, i));
+			if (irq_status) {
+				enable = readl_relaxed(
+					     ver_ops->acc_enable(pmic_arb, i));
+				if (enable & SPMI_PIC_ACC_ENABLE_BIT) {
+					dev_dbg(&pmic_arb->spmic->dev,
+						"Dispatching IRQ for apid=%d status=%x\n",
+						i, irq_status);
+					if (periph_interrupt(pmic_arb, i) != 0)
+						handled++;
+				}
+			}
+		}
+	}
+
+	if (handled == 0)
+		handle_bad_irq(desc);
+
+	chained_irq_exit(chip, desc);
+}
+
+static void qpnpint_irq_ack(struct irq_data *d)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	u8 irq = hwirq_to_irq(d->hwirq);
+	u16 apid = hwirq_to_apid(d->hwirq);
+	u8 data;
+
+	writel_relaxed(BIT(irq), pmic_arb->ver_ops->irq_clear(pmic_arb, apid));
+
+	data = BIT(irq);
+	qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1);
+}
+
+static void qpnpint_irq_mask(struct irq_data *d)
+{
+	u8 irq = hwirq_to_irq(d->hwirq);
+	u8 data = BIT(irq);
+
+	qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1);
+}
+
+static void qpnpint_irq_unmask(struct irq_data *d)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	const struct pmic_arb_ver_ops *ver_ops = pmic_arb->ver_ops;
+	u8 irq = hwirq_to_irq(d->hwirq);
+	u16 apid = hwirq_to_apid(d->hwirq);
+	u8 buf[2];
+
+	writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT,
+			ver_ops->acc_enable(pmic_arb, apid));
+
+	qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1);
+	if (!(buf[0] & BIT(irq))) {
+		/*
+		 * Since the interrupt is currently disabled, write to both the
+		 * LATCHED_CLR and EN_SET registers so that a spurious interrupt
+		 * cannot be triggered when the interrupt is enabled
+		 */
+		buf[0] = BIT(irq);
+		buf[1] = BIT(irq);
+		qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &buf, 2);
+	}
+}
+
+static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)
+{
+	struct spmi_pmic_arb_qpnpint_type type = {0};
+	struct spmi_pmic_arb_qpnpint_type mask;
+	irq_flow_handler_t flow_handler;
+	u8 irq_bit = BIT(hwirq_to_irq(d->hwirq));
+	int rc;
+
+	if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
+		type.type = irq_bit;
+		if (flow_type & IRQF_TRIGGER_RISING)
+			type.polarity_high = irq_bit;
+		if (flow_type & IRQF_TRIGGER_FALLING)
+			type.polarity_low = irq_bit;
+
+		flow_handler = handle_edge_irq;
+	} else {
+		if ((flow_type & (IRQF_TRIGGER_HIGH)) &&
+		    (flow_type & (IRQF_TRIGGER_LOW)))
+			return -EINVAL;
+
+		if (flow_type & IRQF_TRIGGER_HIGH)
+			type.polarity_high = irq_bit;
+		else
+			type.polarity_low = irq_bit;
+
+		flow_handler = handle_level_irq;
+	}
+
+	mask.type = irq_bit;
+	mask.polarity_high = irq_bit;
+	mask.polarity_low = irq_bit;
+
+	rc = qpnpint_spmi_masked_write(d, QPNPINT_REG_SET_TYPE, &type, &mask,
+				       sizeof(type));
+	irq_set_handler_locked(d, flow_handler);
+
+	return rc;
+}
+
+static int qpnpint_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+
+	return irq_set_irq_wake(pmic_arb->irq, on);
+}
+
+static int qpnpint_get_irqchip_state(struct irq_data *d,
+				     enum irqchip_irq_state which,
+				     bool *state)
+{
+	u8 irq = hwirq_to_irq(d->hwirq);
+	u8 status = 0;
+
+	if (which != IRQCHIP_STATE_LINE_LEVEL)
+		return -EINVAL;
+
+	qpnpint_spmi_read(d, QPNPINT_REG_RT_STS, &status, 1);
+	*state = !!(status & BIT(irq));
+
+	return 0;
+}
+
+static int qpnpint_irq_domain_activate(struct irq_domain *domain,
+				       struct irq_data *d, bool reserve)
+{
+	struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+	u16 periph = hwirq_to_per(d->hwirq);
+	u16 apid = hwirq_to_apid(d->hwirq);
+	u16 sid = hwirq_to_sid(d->hwirq);
+	u16 irq = hwirq_to_irq(d->hwirq);
+	u8 buf;
+
+	if (pmic_arb->apid_data[apid].irq_ee != pmic_arb->ee) {
+		dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = %#x, periph = %#x, irq = %u: ee=%u but owner=%u\n",
+			sid, periph, irq, pmic_arb->ee,
+			pmic_arb->apid_data[apid].irq_ee);
+		return -ENODEV;
+	}
+
+	buf = BIT(irq);
+	qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &buf, 1);
+	qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &buf, 1);
+
+	return 0;
+}
+
+static struct irq_chip pmic_arb_irqchip = {
+	.name		= "pmic_arb",
+	.irq_ack	= qpnpint_irq_ack,
+	.irq_mask	= qpnpint_irq_mask,
+	.irq_unmask	= qpnpint_irq_unmask,
+	.irq_set_type	= qpnpint_irq_set_type,
+	.irq_set_wake	= qpnpint_irq_set_wake,
+	.irq_get_irqchip_state	= qpnpint_get_irqchip_state,
+	.flags		= IRQCHIP_MASK_ON_SUSPEND,
+};
+
+static int qpnpint_irq_domain_translate(struct irq_domain *d,
+					struct irq_fwspec *fwspec,
+					unsigned long *out_hwirq,
+					unsigned int *out_type)
+{
+	struct spmi_pmic_arb *pmic_arb = d->host_data;
+	u32 *intspec = fwspec->param;
+	u16 apid, ppid;
+	int rc;
+
+	dev_dbg(&pmic_arb->spmic->dev, "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
+		intspec[0], intspec[1], intspec[2]);
+
+	if (irq_domain_get_of_node(d) != pmic_arb->spmic->dev.of_node)
+		return -EINVAL;
+	if (fwspec->param_count != 4)
+		return -EINVAL;
+	if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7)
+		return -EINVAL;
+
+	ppid = intspec[0] << 8 | intspec[1];
+	rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, ppid);
+	if (rc < 0) {
+		dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = %#x, periph = %#x, irq = %u rc = %d\n",
+		intspec[0], intspec[1], intspec[2], rc);
+		return rc;
+	}
+
+	apid = rc;
+	/* Keep track of {max,min}_apid for bounding search during interrupt */
+	if (apid > pmic_arb->max_apid)
+		pmic_arb->max_apid = apid;
+	if (apid < pmic_arb->min_apid)
+		pmic_arb->min_apid = apid;
+
+	*out_hwirq = spec_to_hwirq(intspec[0], intspec[1], intspec[2], apid);
+	*out_type  = intspec[3] & IRQ_TYPE_SENSE_MASK;
+
+	dev_dbg(&pmic_arb->spmic->dev, "out_hwirq = %lu\n", *out_hwirq);
+
+	return 0;
+}
+
+static struct lock_class_key qpnpint_irq_lock_class, qpnpint_irq_request_class;
+
+static void qpnpint_irq_domain_map(struct spmi_pmic_arb *pmic_arb,
+				   struct irq_domain *domain, unsigned int virq,
+				   irq_hw_number_t hwirq, unsigned int type)
+{
+	irq_flow_handler_t handler;
+
+	dev_dbg(&pmic_arb->spmic->dev, "virq = %u, hwirq = %lu, type = %u\n",
+		virq, hwirq, type);
+
+	if (type & IRQ_TYPE_EDGE_BOTH)
+		handler = handle_edge_irq;
+	else
+		handler = handle_level_irq;
+
+
+	irq_set_lockdep_class(virq, &qpnpint_irq_lock_class,
+			      &qpnpint_irq_request_class);
+	irq_domain_set_info(domain, virq, hwirq, &pmic_arb_irqchip, pmic_arb,
+			    handler, NULL, NULL);
+}
+
+static int qpnpint_irq_domain_alloc(struct irq_domain *domain,
+				    unsigned int virq, unsigned int nr_irqs,
+				    void *data)
+{
+	struct spmi_pmic_arb *pmic_arb = domain->host_data;
+	struct irq_fwspec *fwspec = data;
+	irq_hw_number_t hwirq;
+	unsigned int type;
+	int ret, i;
+
+	ret = qpnpint_irq_domain_translate(domain, fwspec, &hwirq, &type);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < nr_irqs; i++)
+		qpnpint_irq_domain_map(pmic_arb, domain, virq + i, hwirq + i,
+				       type);
+
+	return 0;
+}
+
+static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u16 ppid)
+{
+	u32 *mapping_table = pmic_arb->mapping_table;
+	int index = 0, i;
+	u16 apid_valid;
+	u16 apid;
+	u32 data;
+
+	apid_valid = pmic_arb->ppid_to_apid[ppid];
+	if (apid_valid & PMIC_ARB_APID_VALID) {
+		apid = apid_valid & ~PMIC_ARB_APID_VALID;
+		return apid;
+	}
+
+	for (i = 0; i < SPMI_MAPPING_TABLE_TREE_DEPTH; ++i) {
+		if (!test_and_set_bit(index, pmic_arb->mapping_table_valid))
+			mapping_table[index] = readl_relaxed(pmic_arb->cnfg +
+						SPMI_MAPPING_TABLE_REG(index));
+
+		data = mapping_table[index];
+
+		if (ppid & BIT(SPMI_MAPPING_BIT_INDEX(data))) {
+			if (SPMI_MAPPING_BIT_IS_1_FLAG(data)) {
+				index = SPMI_MAPPING_BIT_IS_1_RESULT(data);
+			} else {
+				apid = SPMI_MAPPING_BIT_IS_1_RESULT(data);
+				pmic_arb->ppid_to_apid[ppid]
+					= apid | PMIC_ARB_APID_VALID;
+				pmic_arb->apid_data[apid].ppid = ppid;
+				return apid;
+			}
+		} else {
+			if (SPMI_MAPPING_BIT_IS_0_FLAG(data)) {
+				index = SPMI_MAPPING_BIT_IS_0_RESULT(data);
+			} else {
+				apid = SPMI_MAPPING_BIT_IS_0_RESULT(data);
+				pmic_arb->ppid_to_apid[ppid]
+					= apid | PMIC_ARB_APID_VALID;
+				pmic_arb->apid_data[apid].ppid = ppid;
+				return apid;
+			}
+		}
+	}
+
+	return -ENODEV;
+}
+
+/* v1 offset per ee */
+static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+			enum pmic_arb_channel ch_type)
+{
+	return 0x800 + 0x80 * pmic_arb->channel;
+}
+
+static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
+{
+	struct apid_data *apidd = &pmic_arb->apid_data[pmic_arb->last_apid];
+	u32 regval, offset;
+	u16 id, apid;
+
+	for (apid = pmic_arb->last_apid; ; apid++, apidd++) {
+		offset = pmic_arb->ver_ops->apid_map_offset(apid);
+		if (offset >= pmic_arb->core_size)
+			break;
+
+		regval = readl_relaxed(pmic_arb->ver_ops->apid_owner(pmic_arb,
+								     apid));
+		apidd->irq_ee = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+		apidd->write_ee = apidd->irq_ee;
+
+		regval = readl_relaxed(pmic_arb->core + offset);
+		if (!regval)
+			continue;
+
+		id = (regval >> 8) & PMIC_ARB_PPID_MASK;
+		pmic_arb->ppid_to_apid[id] = apid | PMIC_ARB_APID_VALID;
+		apidd->ppid = id;
+		if (id == ppid) {
+			apid |= PMIC_ARB_APID_VALID;
+			break;
+		}
+	}
+	pmic_arb->last_apid = apid & ~PMIC_ARB_APID_VALID;
+
+	return apid;
+}
+
+static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u16 ppid)
+{
+	u16 apid_valid;
+
+	apid_valid = pmic_arb->ppid_to_apid[ppid];
+	if (!(apid_valid & PMIC_ARB_APID_VALID))
+		apid_valid = pmic_arb_find_apid(pmic_arb, ppid);
+	if (!(apid_valid & PMIC_ARB_APID_VALID))
+		return -ENODEV;
+
+	return apid_valid & ~PMIC_ARB_APID_VALID;
+}
+
+static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pmic_arb)
+{
+	struct apid_data *apidd;
+	struct apid_data *prev_apidd;
+	u16 i, apid, ppid, apid_max;
+	bool valid, is_irq_ee;
+	u32 regval, offset;
+
+	/*
+	 * In order to allow multiple EEs to write to a single PPID in arbiter
+	 * version 5 and 7, there is more than one APID mapped to each PPID.
+	 * The owner field for each of these mappings specifies the EE which is
+	 * allowed to write to the APID.  The owner of the last (highest) APID
+	 * which has the IRQ owner bit set for a given PPID will receive
+	 * interrupts from the PPID.
+	 *
+	 * In arbiter version 7, the APID numbering space is divided between
+	 * the primary bus (0) and secondary bus (1) such that:
+	 * APID = 0 to N-1 are assigned to the primary bus
+	 * APID = N to N+M-1 are assigned to the secondary bus
+	 * where N = number of APIDs supported by the primary bus and
+	 *       M = number of APIDs supported by the secondary bus
+	 */
+	apidd = &pmic_arb->apid_data[pmic_arb->base_apid];
+	apid_max = pmic_arb->base_apid + pmic_arb->apid_count;
+	for (i = pmic_arb->base_apid; i < apid_max; i++, apidd++) {
+		offset = pmic_arb->ver_ops->apid_map_offset(i);
+		if (offset >= pmic_arb->core_size)
+			break;
+
+		regval = readl_relaxed(pmic_arb->core + offset);
+		if (!regval)
+			continue;
+		ppid = (regval >> 8) & PMIC_ARB_PPID_MASK;
+		is_irq_ee = PMIC_ARB_CHAN_IS_IRQ_OWNER(regval);
+
+		regval = readl_relaxed(pmic_arb->ver_ops->apid_owner(pmic_arb,
+								     i));
+		apidd->write_ee = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+
+		apidd->irq_ee = is_irq_ee ? apidd->write_ee : INVALID_EE;
+
+		valid = pmic_arb->ppid_to_apid[ppid] & PMIC_ARB_APID_VALID;
+		apid = pmic_arb->ppid_to_apid[ppid] & ~PMIC_ARB_APID_VALID;
+		prev_apidd = &pmic_arb->apid_data[apid];
+
+		if (!valid || apidd->write_ee == pmic_arb->ee) {
+			/* First PPID mapping or one for this EE */
+			pmic_arb->ppid_to_apid[ppid] = i | PMIC_ARB_APID_VALID;
+		} else if (valid && is_irq_ee &&
+			   prev_apidd->write_ee == pmic_arb->ee) {
+			/*
+			 * Duplicate PPID mapping after the one for this EE;
+			 * override the irq owner
+			 */
+			prev_apidd->irq_ee = apidd->irq_ee;
+		}
+
+		apidd->ppid = ppid;
+		pmic_arb->last_apid = i;
+	}
+
+	/* Dump the mapping table for debug purposes. */
+	dev_dbg(&pmic_arb->spmic->dev, "PPID APID Write-EE IRQ-EE\n");
+	for (ppid = 0; ppid < PMIC_ARB_MAX_PPID; ppid++) {
+		apid = pmic_arb->ppid_to_apid[ppid];
+		if (apid & PMIC_ARB_APID_VALID) {
+			apid &= ~PMIC_ARB_APID_VALID;
+			apidd = &pmic_arb->apid_data[apid];
+			dev_dbg(&pmic_arb->spmic->dev, "%#03X %3u %2u %2u\n",
+			      ppid, apid, apidd->write_ee, apidd->irq_ee);
+		}
+	}
+
+	return 0;
+}
+
+static int pmic_arb_ppid_to_apid_v5(struct spmi_pmic_arb *pmic_arb, u16 ppid)
+{
+	if (!(pmic_arb->ppid_to_apid[ppid] & PMIC_ARB_APID_VALID))
+		return -ENODEV;
+
+	return pmic_arb->ppid_to_apid[ppid] & ~PMIC_ARB_APID_VALID;
+}
+
+/* v2 offset per ppid and per ee */
+static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+			   enum pmic_arb_channel ch_type)
+{
+	u16 apid;
+	u16 ppid;
+	int rc;
+
+	ppid = sid << 8 | ((addr >> 8) & 0xFF);
+	rc = pmic_arb_ppid_to_apid_v2(pmic_arb, ppid);
+	if (rc < 0)
+		return rc;
+
+	apid = rc;
+	return 0x1000 * pmic_arb->ee + 0x8000 * apid;
+}
+
+/*
+ * v5 offset per ee and per apid for observer channels and per apid for
+ * read/write channels.
+ */
+static int pmic_arb_offset_v5(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+			   enum pmic_arb_channel ch_type)
+{
+	u16 apid;
+	int rc;
+	u32 offset = 0;
+	u16 ppid = (sid << 8) | (addr >> 8);
+
+	rc = pmic_arb_ppid_to_apid_v5(pmic_arb, ppid);
+	if (rc < 0)
+		return rc;
+
+	apid = rc;
+	switch (ch_type) {
+	case PMIC_ARB_CHANNEL_OBS:
+		offset = 0x10000 * pmic_arb->ee + 0x80 * apid;
+		break;
+	case PMIC_ARB_CHANNEL_RW:
+		if (pmic_arb->apid_data[apid].write_ee != pmic_arb->ee) {
+			dev_err(&pmic_arb->spmic->dev, "disallowed SPMI write to sid=%u, addr=0x%04X\n",
+				sid, addr);
+			return -EPERM;
+		}
+		offset = 0x10000 * apid;
+		break;
+	}
+
+	return offset;
+}
+
+/*
+ * v7 offset per ee and per apid for observer channels and per apid for
+ * read/write channels.
+ */
+static int pmic_arb_offset_v7(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+			   enum pmic_arb_channel ch_type)
+{
+	u16 apid;
+	int rc;
+	u32 offset = 0;
+	u16 ppid = (sid << 8) | (addr >> 8);
+
+	rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, ppid);
+	if (rc < 0)
+		return rc;
+
+	apid = rc;
+	switch (ch_type) {
+	case PMIC_ARB_CHANNEL_OBS:
+		offset = 0x8000 * pmic_arb->ee + 0x20 * apid;
+		break;
+	case PMIC_ARB_CHANNEL_RW:
+		if (pmic_arb->apid_data[apid].write_ee != pmic_arb->ee) {
+			dev_err(&pmic_arb->spmic->dev, "disallowed SPMI write to sid=%u, addr=0x%04X\n",
+				sid, addr);
+			return -EPERM;
+		}
+		offset = 0x1000 * apid;
+		break;
+	}
+
+	return offset;
+}
+
+static u32 pmic_arb_fmt_cmd_v1(u8 opc, u8 sid, u16 addr, u8 bc)
+{
+	return (opc << 27) | ((sid & 0xf) << 20) | (addr << 4) | (bc & 0x7);
+}
+
+static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
+{
+	return (opc << 27) | ((addr & 0xff) << 4) | (bc & 0x7);
+}
+
+static void __iomem *
+pmic_arb_owner_acc_status_v1(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+	return pmic_arb->intr + 0x20 * m + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_owner_acc_status_v2(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+	return pmic_arb->intr + 0x100000 + 0x1000 * m + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_owner_acc_status_v3(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+	return pmic_arb->intr + 0x200000 + 0x1000 * m + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_owner_acc_status_v5(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+	return pmic_arb->intr + 0x10000 * m + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_owner_acc_status_v7(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+	return pmic_arb->intr + 0x1000 * m + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_acc_enable_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0x200 + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_acc_enable_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0x1000 * n;
+}
+
+static void __iomem *
+pmic_arb_acc_enable_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x100 + 0x10000 * n;
+}
+
+static void __iomem *
+pmic_arb_acc_enable_v7(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x100 + 0x1000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_status_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0x600 + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_status_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0x4 + 0x1000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_status_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x104 + 0x10000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_status_v7(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x104 + 0x1000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_clear_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0xA00 + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_clear_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->intr + 0x8 + 0x1000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_clear_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x108 + 0x10000 * n;
+}
+
+static void __iomem *
+pmic_arb_irq_clear_v7(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->wr_base + 0x108 + 0x1000 * n;
+}
+
+static u32 pmic_arb_apid_map_offset_v2(u16 n)
+{
+	return 0x800 + 0x4 * n;
+}
+
+static u32 pmic_arb_apid_map_offset_v5(u16 n)
+{
+	return 0x900 + 0x4 * n;
+}
+
+static u32 pmic_arb_apid_map_offset_v7(u16 n)
+{
+	return 0x2000 + 0x4 * n;
+}
+
+static void __iomem *
+pmic_arb_apid_owner_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->cnfg + 0x700 + 0x4 * n;
+}
+
+/*
+ * For arbiter version 7, APID ownership table registers have independent
+ * numbering space for each SPMI bus instance, so each is indexed starting from
+ * 0.
+ */
+static void __iomem *
+pmic_arb_apid_owner_v7(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+	return pmic_arb->cnfg + 0x4 * (n - pmic_arb->base_apid);
+}
+
+static const struct pmic_arb_ver_ops pmic_arb_v1 = {
+	.ver_str		= "v1",
+	.ppid_to_apid		= pmic_arb_ppid_to_apid_v1,
+	.non_data_cmd		= pmic_arb_non_data_cmd_v1,
+	.offset			= pmic_arb_offset_v1,
+	.fmt_cmd		= pmic_arb_fmt_cmd_v1,
+	.owner_acc_status	= pmic_arb_owner_acc_status_v1,
+	.acc_enable		= pmic_arb_acc_enable_v1,
+	.irq_status		= pmic_arb_irq_status_v1,
+	.irq_clear		= pmic_arb_irq_clear_v1,
+	.apid_map_offset	= pmic_arb_apid_map_offset_v2,
+	.apid_owner		= pmic_arb_apid_owner_v2,
+};
+
+static const struct pmic_arb_ver_ops pmic_arb_v2 = {
+	.ver_str		= "v2",
+	.ppid_to_apid		= pmic_arb_ppid_to_apid_v2,
+	.non_data_cmd		= pmic_arb_non_data_cmd_v2,
+	.offset			= pmic_arb_offset_v2,
+	.fmt_cmd		= pmic_arb_fmt_cmd_v2,
+	.owner_acc_status	= pmic_arb_owner_acc_status_v2,
+	.acc_enable		= pmic_arb_acc_enable_v2,
+	.irq_status		= pmic_arb_irq_status_v2,
+	.irq_clear		= pmic_arb_irq_clear_v2,
+	.apid_map_offset	= pmic_arb_apid_map_offset_v2,
+	.apid_owner		= pmic_arb_apid_owner_v2,
+};
+
+static const struct pmic_arb_ver_ops pmic_arb_v3 = {
+	.ver_str		= "v3",
+	.ppid_to_apid		= pmic_arb_ppid_to_apid_v2,
+	.non_data_cmd		= pmic_arb_non_data_cmd_v2,
+	.offset			= pmic_arb_offset_v2,
+	.fmt_cmd		= pmic_arb_fmt_cmd_v2,
+	.owner_acc_status	= pmic_arb_owner_acc_status_v3,
+	.acc_enable		= pmic_arb_acc_enable_v2,
+	.irq_status		= pmic_arb_irq_status_v2,
+	.irq_clear		= pmic_arb_irq_clear_v2,
+	.apid_map_offset	= pmic_arb_apid_map_offset_v2,
+	.apid_owner		= pmic_arb_apid_owner_v2,
+};
+
+static const struct pmic_arb_ver_ops pmic_arb_v5 = {
+	.ver_str		= "v5",
+	.ppid_to_apid		= pmic_arb_ppid_to_apid_v5,
+	.non_data_cmd		= pmic_arb_non_data_cmd_v2,
+	.offset			= pmic_arb_offset_v5,
+	.fmt_cmd		= pmic_arb_fmt_cmd_v2,
+	.owner_acc_status	= pmic_arb_owner_acc_status_v5,
+	.acc_enable		= pmic_arb_acc_enable_v5,
+	.irq_status		= pmic_arb_irq_status_v5,
+	.irq_clear		= pmic_arb_irq_clear_v5,
+	.apid_map_offset	= pmic_arb_apid_map_offset_v5,
+	.apid_owner		= pmic_arb_apid_owner_v2,
+};
+
+static const struct pmic_arb_ver_ops pmic_arb_v7 = {
+	.ver_str		= "v7",
+	.ppid_to_apid		= pmic_arb_ppid_to_apid_v5,
+	.non_data_cmd		= pmic_arb_non_data_cmd_v2,
+	.offset			= pmic_arb_offset_v7,
+	.fmt_cmd		= pmic_arb_fmt_cmd_v2,
+	.owner_acc_status	= pmic_arb_owner_acc_status_v7,
+	.acc_enable		= pmic_arb_acc_enable_v7,
+	.irq_status		= pmic_arb_irq_status_v7,
+	.irq_clear		= pmic_arb_irq_clear_v7,
+	.apid_map_offset	= pmic_arb_apid_map_offset_v7,
+	.apid_owner		= pmic_arb_apid_owner_v7,
+};
+
+static const struct irq_domain_ops pmic_arb_irq_domain_ops = {
+	.activate = qpnpint_irq_domain_activate,
+	.alloc = qpnpint_irq_domain_alloc,
+	.free = irq_domain_free_irqs_common,
+	.translate = qpnpint_irq_domain_translate,
+};
+
+static int spmi_pmic_arb_probe(struct platform_device *pdev)
+{
+	struct spmi_pmic_arb *pmic_arb;
+	struct spmi_controller *ctrl;
+	struct resource *res;
+	void __iomem *core;
+	u32 *mapping_table;
+	u32 channel, ee, hw_ver;
+	int err;
+
+	ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*pmic_arb));
+	if (!ctrl)
+		return -ENOMEM;
+
+	pmic_arb = spmi_controller_get_drvdata(ctrl);
+	pmic_arb->spmic = ctrl;
+
+	/*
+	 * Please don't replace this with devm_platform_ioremap_resource() or
+	 * devm_ioremap_resource().  These both result in a call to
+	 * devm_request_mem_region() which prevents multiple mappings of this
+	 * register address range.  SoCs with PMIC arbiter v7 may define two
+	 * arbiter devices, for the two physical SPMI interfaces, which  share
+	 * some register address ranges (i.e. "core", "obsrvr", and "chnls").
+	 * Ensure that both devices probe successfully by calling devm_ioremap()
+	 * which does not result in a devm_request_mem_region() call.
+	 */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
+	core = devm_ioremap(&ctrl->dev, res->start, resource_size(res));
+	if (IS_ERR(core)) {
+		err = PTR_ERR(core);
+		goto err_put_ctrl;
+	}
+
+	pmic_arb->core_size = resource_size(res);
+
+	pmic_arb->ppid_to_apid = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PPID,
+					      sizeof(*pmic_arb->ppid_to_apid),
+					      GFP_KERNEL);
+	if (!pmic_arb->ppid_to_apid) {
+		err = -ENOMEM;
+		goto err_put_ctrl;
+	}
+
+	hw_ver = readl_relaxed(core + PMIC_ARB_VERSION);
+
+	if (hw_ver < PMIC_ARB_VERSION_V2_MIN) {
+		pmic_arb->ver_ops = &pmic_arb_v1;
+		pmic_arb->wr_base = core;
+		pmic_arb->rd_base = core;
+	} else {
+		pmic_arb->core = core;
+
+		if (hw_ver < PMIC_ARB_VERSION_V3_MIN)
+			pmic_arb->ver_ops = &pmic_arb_v2;
+		else if (hw_ver < PMIC_ARB_VERSION_V5_MIN)
+			pmic_arb->ver_ops = &pmic_arb_v3;
+		else if (hw_ver < PMIC_ARB_VERSION_V7_MIN)
+			pmic_arb->ver_ops = &pmic_arb_v5;
+		else
+			pmic_arb->ver_ops = &pmic_arb_v7;
+
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						   "obsrvr");
+		pmic_arb->rd_base = devm_ioremap(&ctrl->dev, res->start,
+						 resource_size(res));
+		if (IS_ERR(pmic_arb->rd_base)) {
+			err = PTR_ERR(pmic_arb->rd_base);
+			goto err_put_ctrl;
+		}
+
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						   "chnls");
+		pmic_arb->wr_base = devm_ioremap(&ctrl->dev, res->start,
+						 resource_size(res));
+		if (IS_ERR(pmic_arb->wr_base)) {
+			err = PTR_ERR(pmic_arb->wr_base);
+			goto err_put_ctrl;
+		}
+	}
+
+	pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS;
+
+	if (hw_ver >= PMIC_ARB_VERSION_V7_MIN) {
+		pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS_V7;
+		/* Optional property for v7: */
+		of_property_read_u32(pdev->dev.of_node, "qcom,bus-id",
+					&pmic_arb->bus_instance);
+		if (pmic_arb->bus_instance > 1) {
+			err = -EINVAL;
+			dev_err(&pdev->dev, "invalid bus instance (%u) specified\n",
+				pmic_arb->bus_instance);
+			goto err_put_ctrl;
+		}
+
+		if (pmic_arb->bus_instance == 0) {
+			pmic_arb->base_apid = 0;
+			pmic_arb->apid_count =
+				readl_relaxed(core + PMIC_ARB_FEATURES) &
+				PMIC_ARB_FEATURES_PERIPH_MASK;
+		} else {
+			pmic_arb->base_apid =
+				readl_relaxed(core + PMIC_ARB_FEATURES) &
+				PMIC_ARB_FEATURES_PERIPH_MASK;
+			pmic_arb->apid_count =
+				readl_relaxed(core + PMIC_ARB_FEATURES1) &
+				PMIC_ARB_FEATURES_PERIPH_MASK;
+		}
+
+		if (pmic_arb->base_apid + pmic_arb->apid_count > pmic_arb->max_periphs) {
+			err = -EINVAL;
+			dev_err(&pdev->dev, "Unsupported APID count %d detected\n",
+				pmic_arb->base_apid + pmic_arb->apid_count);
+			goto err_put_ctrl;
+		}
+	} else if (hw_ver >= PMIC_ARB_VERSION_V5_MIN) {
+		pmic_arb->base_apid = 0;
+		pmic_arb->apid_count = readl_relaxed(core + PMIC_ARB_FEATURES) &
+					PMIC_ARB_FEATURES_PERIPH_MASK;
+
+		if (pmic_arb->apid_count > pmic_arb->max_periphs) {
+			err = -EINVAL;
+			dev_err(&pdev->dev, "Unsupported APID count %d detected\n",
+				pmic_arb->apid_count);
+			goto err_put_ctrl;
+		}
+	}
+
+	pmic_arb->apid_data = devm_kcalloc(&ctrl->dev, pmic_arb->max_periphs,
+					   sizeof(*pmic_arb->apid_data),
+					   GFP_KERNEL);
+	if (!pmic_arb->apid_data) {
+		err = -ENOMEM;
+		goto err_put_ctrl;
+	}
+
+	dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n",
+		 pmic_arb->ver_ops->ver_str, hw_ver);
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "intr");
+	pmic_arb->intr = devm_ioremap_resource(&ctrl->dev, res);
+	if (IS_ERR(pmic_arb->intr)) {
+		err = PTR_ERR(pmic_arb->intr);
+		goto err_put_ctrl;
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cnfg");
+	pmic_arb->cnfg = devm_ioremap_resource(&ctrl->dev, res);
+	if (IS_ERR(pmic_arb->cnfg)) {
+		err = PTR_ERR(pmic_arb->cnfg);
+		goto err_put_ctrl;
+	}
+
+	pmic_arb->irq = platform_get_irq_byname(pdev, "periph_irq");
+	if (pmic_arb->irq < 0) {
+		err = pmic_arb->irq;
+		goto err_put_ctrl;
+	}
+
+	err = of_property_read_u32(pdev->dev.of_node, "qcom,channel", &channel);
+	if (err) {
+		dev_err(&pdev->dev, "channel unspecified.\n");
+		goto err_put_ctrl;
+	}
+
+	if (channel > 5) {
+		dev_err(&pdev->dev, "invalid channel (%u) specified.\n",
+			channel);
+		err = -EINVAL;
+		goto err_put_ctrl;
+	}
+
+	pmic_arb->channel = channel;
+
+	err = of_property_read_u32(pdev->dev.of_node, "qcom,ee", &ee);
+	if (err) {
+		dev_err(&pdev->dev, "EE unspecified.\n");
+		goto err_put_ctrl;
+	}
+
+	if (ee > 5) {
+		dev_err(&pdev->dev, "invalid EE (%u) specified\n", ee);
+		err = -EINVAL;
+		goto err_put_ctrl;
+	}
+
+	pmic_arb->ee = ee;
+	mapping_table = devm_kcalloc(&ctrl->dev, pmic_arb->max_periphs,
+					sizeof(*mapping_table), GFP_KERNEL);
+	if (!mapping_table) {
+		err = -ENOMEM;
+		goto err_put_ctrl;
+	}
+
+	pmic_arb->mapping_table = mapping_table;
+	/* Initialize max_apid/min_apid to the opposite bounds, during
+	 * the irq domain translation, we are sure to update these */
+	pmic_arb->max_apid = 0;
+	pmic_arb->min_apid = pmic_arb->max_periphs - 1;
+
+	platform_set_drvdata(pdev, ctrl);
+	raw_spin_lock_init(&pmic_arb->lock);
+
+	ctrl->cmd = pmic_arb_cmd;
+	ctrl->read_cmd = pmic_arb_read_cmd;
+	ctrl->write_cmd = pmic_arb_write_cmd;
+
+	if (hw_ver >= PMIC_ARB_VERSION_V5_MIN) {
+		err = pmic_arb_read_apid_map_v5(pmic_arb);
+		if (err) {
+			dev_err(&pdev->dev, "could not read APID->PPID mapping table, rc= %d\n",
+				err);
+			goto err_put_ctrl;
+		}
+	}
+
+	dev_dbg(&pdev->dev, "adding irq domain\n");
+	pmic_arb->domain = irq_domain_add_tree(pdev->dev.of_node,
+					 &pmic_arb_irq_domain_ops, pmic_arb);
+	if (!pmic_arb->domain) {
+		dev_err(&pdev->dev, "unable to create irq_domain\n");
+		err = -ENOMEM;
+		goto err_put_ctrl;
+	}
+
+	irq_set_chained_handler_and_data(pmic_arb->irq, pmic_arb_chained_irq,
+					pmic_arb);
+	err = spmi_controller_add(ctrl);
+	if (err)
+		goto err_domain_remove;
+
+	return 0;
+
+err_domain_remove:
+	irq_set_chained_handler_and_data(pmic_arb->irq, NULL, NULL);
+	irq_domain_remove(pmic_arb->domain);
+err_put_ctrl:
+	spmi_controller_put(ctrl);
+	return err;
+}
+
+static void spmi_pmic_arb_remove(struct platform_device *pdev)
+{
+	struct spmi_controller *ctrl = platform_get_drvdata(pdev);
+	struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
+	spmi_controller_remove(ctrl);
+	irq_set_chained_handler_and_data(pmic_arb->irq, NULL, NULL);
+	irq_domain_remove(pmic_arb->domain);
+	spmi_controller_put(ctrl);
+}
+
+static const struct of_device_id spmi_pmic_arb_match_table[] = {
+	{ .compatible = "qcom,spmi-pmic-arb", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, spmi_pmic_arb_match_table);
+
+static struct platform_driver spmi_pmic_arb_driver = {
+	.probe		= spmi_pmic_arb_probe,
+	.remove_new	= spmi_pmic_arb_remove,
+	.driver		= {
+		.name	= "spmi_pmic_arb",
+		.of_match_table = spmi_pmic_arb_match_table,
+	},
+};
+module_platform_driver(spmi_pmic_arb_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:spmi_pmic_arb");