pmdomain: Rename the genpd subsystem to pmdomain

It has been pointed out that naming a subsystem "genpd" isn't very
self-explanatory and the acronym itself that means Generic PM Domain, is
known only by a limited group of people.

In a way to improve the situation, let's rename the subsystem to pmdomain,
which ideally should indicate that this is about so called Power Domains or
"PM domains" as we often also use within the Linux Kernel terminology.

Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org

4 files changed, 3669 insertions, 0 deletions

diff --git a/drivers/pmdomain/qcom/Makefile b/drivers/pmdomain/qcom/Makefile
new file mode 100644
index 000000000000..403dfc5af095
--- /dev/null
+++ b/drivers/pmdomain/qcom/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_QCOM_CPR)		+= cpr.o
+obj-$(CONFIG_QCOM_RPMPD)	+= rpmpd.o
+obj-$(CONFIG_QCOM_RPMHPD)	+= rpmhpd.o
diff --git a/drivers/pmdomain/qcom/cpr.c b/drivers/pmdomain/qcom/cpr.c
new file mode 100644
index 000000000000..94a3f0977212
--- /dev/null
+++ b/drivers/pmdomain/qcom/cpr.c
@@ -0,0 +1,1756 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019, Linaro Limited
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/debugfs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_opp.h>
+#include <linux/interrupt.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regulator/consumer.h>
+#include <linux/clk.h>
+#include <linux/nvmem-consumer.h>
+
+/* Register Offsets for RB-CPR and Bit Definitions */
+
+/* RBCPR Version Register */
+#define REG_RBCPR_VERSION		0
+#define RBCPR_VER_2			0x02
+#define FLAGS_IGNORE_1ST_IRQ_STATUS	BIT(0)
+
+/* RBCPR Gate Count and Target Registers */
+#define REG_RBCPR_GCNT_TARGET(n)	(0x60 + 4 * (n))
+
+#define RBCPR_GCNT_TARGET_TARGET_SHIFT	0
+#define RBCPR_GCNT_TARGET_TARGET_MASK	GENMASK(11, 0)
+#define RBCPR_GCNT_TARGET_GCNT_SHIFT	12
+#define RBCPR_GCNT_TARGET_GCNT_MASK	GENMASK(9, 0)
+
+/* RBCPR Timer Control */
+#define REG_RBCPR_TIMER_INTERVAL	0x44
+#define REG_RBIF_TIMER_ADJUST		0x4c
+
+#define RBIF_TIMER_ADJ_CONS_UP_MASK	GENMASK(3, 0)
+#define RBIF_TIMER_ADJ_CONS_UP_SHIFT	0
+#define RBIF_TIMER_ADJ_CONS_DOWN_MASK	GENMASK(3, 0)
+#define RBIF_TIMER_ADJ_CONS_DOWN_SHIFT	4
+#define RBIF_TIMER_ADJ_CLAMP_INT_MASK	GENMASK(7, 0)
+#define RBIF_TIMER_ADJ_CLAMP_INT_SHIFT	8
+
+/* RBCPR Config Register */
+#define REG_RBIF_LIMIT			0x48
+#define RBIF_LIMIT_CEILING_MASK		GENMASK(5, 0)
+#define RBIF_LIMIT_CEILING_SHIFT	6
+#define RBIF_LIMIT_FLOOR_BITS		6
+#define RBIF_LIMIT_FLOOR_MASK		GENMASK(5, 0)
+
+#define RBIF_LIMIT_CEILING_DEFAULT	RBIF_LIMIT_CEILING_MASK
+#define RBIF_LIMIT_FLOOR_DEFAULT	0
+
+#define REG_RBIF_SW_VLEVEL		0x94
+#define RBIF_SW_VLEVEL_DEFAULT		0x20
+
+#define REG_RBCPR_STEP_QUOT		0x80
+#define RBCPR_STEP_QUOT_STEPQUOT_MASK	GENMASK(7, 0)
+#define RBCPR_STEP_QUOT_IDLE_CLK_MASK	GENMASK(3, 0)
+#define RBCPR_STEP_QUOT_IDLE_CLK_SHIFT	8
+
+/* RBCPR Control Register */
+#define REG_RBCPR_CTL			0x90
+
+#define RBCPR_CTL_LOOP_EN			BIT(0)
+#define RBCPR_CTL_TIMER_EN			BIT(3)
+#define RBCPR_CTL_SW_AUTO_CONT_ACK_EN		BIT(5)
+#define RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN	BIT(6)
+#define RBCPR_CTL_COUNT_MODE			BIT(10)
+#define RBCPR_CTL_UP_THRESHOLD_MASK	GENMASK(3, 0)
+#define RBCPR_CTL_UP_THRESHOLD_SHIFT	24
+#define RBCPR_CTL_DN_THRESHOLD_MASK	GENMASK(3, 0)
+#define RBCPR_CTL_DN_THRESHOLD_SHIFT	28
+
+/* RBCPR Ack/Nack Response */
+#define REG_RBIF_CONT_ACK_CMD		0x98
+#define REG_RBIF_CONT_NACK_CMD		0x9c
+
+/* RBCPR Result status Register */
+#define REG_RBCPR_RESULT_0		0xa0
+
+#define RBCPR_RESULT0_BUSY_SHIFT	19
+#define RBCPR_RESULT0_BUSY_MASK		BIT(RBCPR_RESULT0_BUSY_SHIFT)
+#define RBCPR_RESULT0_ERROR_LT0_SHIFT	18
+#define RBCPR_RESULT0_ERROR_SHIFT	6
+#define RBCPR_RESULT0_ERROR_MASK	GENMASK(11, 0)
+#define RBCPR_RESULT0_ERROR_STEPS_SHIFT	2
+#define RBCPR_RESULT0_ERROR_STEPS_MASK	GENMASK(3, 0)
+#define RBCPR_RESULT0_STEP_UP_SHIFT	1
+
+/* RBCPR Interrupt Control Register */
+#define REG_RBIF_IRQ_EN(n)		(0x100 + 4 * (n))
+#define REG_RBIF_IRQ_CLEAR		0x110
+#define REG_RBIF_IRQ_STATUS		0x114
+
+#define CPR_INT_DONE		BIT(0)
+#define CPR_INT_MIN		BIT(1)
+#define CPR_INT_DOWN		BIT(2)
+#define CPR_INT_MID		BIT(3)
+#define CPR_INT_UP		BIT(4)
+#define CPR_INT_MAX		BIT(5)
+#define CPR_INT_CLAMP		BIT(6)
+#define CPR_INT_ALL	(CPR_INT_DONE | CPR_INT_MIN | CPR_INT_DOWN | \
+			CPR_INT_MID | CPR_INT_UP | CPR_INT_MAX | CPR_INT_CLAMP)
+#define CPR_INT_DEFAULT	(CPR_INT_UP | CPR_INT_DOWN)
+
+#define CPR_NUM_RING_OSC	8
+
+/* CPR eFuse parameters */
+#define CPR_FUSE_TARGET_QUOT_BITS_MASK	GENMASK(11, 0)
+
+#define CPR_FUSE_MIN_QUOT_DIFF		50
+
+#define FUSE_REVISION_UNKNOWN		(-1)
+
+enum voltage_change_dir {
+	NO_CHANGE,
+	DOWN,
+	UP,
+};
+
+struct cpr_fuse {
+	char *ring_osc;
+	char *init_voltage;
+	char *quotient;
+	char *quotient_offset;
+};
+
+struct fuse_corner_data {
+	int ref_uV;
+	int max_uV;
+	int min_uV;
+	int max_volt_scale;
+	int max_quot_scale;
+	/* fuse quot */
+	int quot_offset;
+	int quot_scale;
+	int quot_adjust;
+	/* fuse quot_offset */
+	int quot_offset_scale;
+	int quot_offset_adjust;
+};
+
+struct cpr_fuses {
+	int init_voltage_step;
+	int init_voltage_width;
+	struct fuse_corner_data *fuse_corner_data;
+};
+
+struct corner_data {
+	unsigned int fuse_corner;
+	unsigned long freq;
+};
+
+struct cpr_desc {
+	unsigned int num_fuse_corners;
+	int min_diff_quot;
+	int *step_quot;
+
+	unsigned int		timer_delay_us;
+	unsigned int		timer_cons_up;
+	unsigned int		timer_cons_down;
+	unsigned int		up_threshold;
+	unsigned int		down_threshold;
+	unsigned int		idle_clocks;
+	unsigned int		gcnt_us;
+	unsigned int		vdd_apc_step_up_limit;
+	unsigned int		vdd_apc_step_down_limit;
+	unsigned int		clamp_timer_interval;
+
+	struct cpr_fuses cpr_fuses;
+	bool reduce_to_fuse_uV;
+	bool reduce_to_corner_uV;
+};
+
+struct acc_desc {
+	unsigned int	enable_reg;
+	u32		enable_mask;
+
+	struct reg_sequence	*config;
+	struct reg_sequence	*settings;
+	int			num_regs_per_fuse;
+};
+
+struct cpr_acc_desc {
+	const struct cpr_desc *cpr_desc;
+	const struct acc_desc *acc_desc;
+};
+
+struct fuse_corner {
+	int min_uV;
+	int max_uV;
+	int uV;
+	int quot;
+	int step_quot;
+	const struct reg_sequence *accs;
+	int num_accs;
+	unsigned long max_freq;
+	u8 ring_osc_idx;
+};
+
+struct corner {
+	int min_uV;
+	int max_uV;
+	int uV;
+	int last_uV;
+	int quot_adjust;
+	u32 save_ctl;
+	u32 save_irq;
+	unsigned long freq;
+	struct fuse_corner *fuse_corner;
+};
+
+struct cpr_drv {
+	unsigned int		num_corners;
+	unsigned int		ref_clk_khz;
+
+	struct generic_pm_domain pd;
+	struct device		*dev;
+	struct device		*attached_cpu_dev;
+	struct mutex		lock;
+	void __iomem		*base;
+	struct corner		*corner;
+	struct regulator	*vdd_apc;
+	struct clk		*cpu_clk;
+	struct regmap		*tcsr;
+	bool			loop_disabled;
+	u32			gcnt;
+	unsigned long		flags;
+
+	struct fuse_corner	*fuse_corners;
+	struct corner		*corners;
+
+	const struct cpr_desc *desc;
+	const struct acc_desc *acc_desc;
+	const struct cpr_fuse *cpr_fuses;
+
+	struct dentry *debugfs;
+};
+
+static bool cpr_is_allowed(struct cpr_drv *drv)
+{
+	return !drv->loop_disabled;
+}
+
+static void cpr_write(struct cpr_drv *drv, u32 offset, u32 value)
+{
+	writel_relaxed(value, drv->base + offset);
+}
+
+static u32 cpr_read(struct cpr_drv *drv, u32 offset)
+{
+	return readl_relaxed(drv->base + offset);
+}
+
+static void
+cpr_masked_write(struct cpr_drv *drv, u32 offset, u32 mask, u32 value)
+{
+	u32 val;
+
+	val = readl_relaxed(drv->base + offset);
+	val &= ~mask;
+	val |= value & mask;
+	writel_relaxed(val, drv->base + offset);
+}
+
+static void cpr_irq_clr(struct cpr_drv *drv)
+{
+	cpr_write(drv, REG_RBIF_IRQ_CLEAR, CPR_INT_ALL);
+}
+
+static void cpr_irq_clr_nack(struct cpr_drv *drv)
+{
+	cpr_irq_clr(drv);
+	cpr_write(drv, REG_RBIF_CONT_NACK_CMD, 1);
+}
+
+static void cpr_irq_clr_ack(struct cpr_drv *drv)
+{
+	cpr_irq_clr(drv);
+	cpr_write(drv, REG_RBIF_CONT_ACK_CMD, 1);
+}
+
+static void cpr_irq_set(struct cpr_drv *drv, u32 int_bits)
+{
+	cpr_write(drv, REG_RBIF_IRQ_EN(0), int_bits);
+}
+
+static void cpr_ctl_modify(struct cpr_drv *drv, u32 mask, u32 value)
+{
+	cpr_masked_write(drv, REG_RBCPR_CTL, mask, value);
+}
+
+static void cpr_ctl_enable(struct cpr_drv *drv, struct corner *corner)
+{
+	u32 val, mask;
+	const struct cpr_desc *desc = drv->desc;
+
+	/* Program Consecutive Up & Down */
+	val = desc->timer_cons_down << RBIF_TIMER_ADJ_CONS_DOWN_SHIFT;
+	val |= desc->timer_cons_up << RBIF_TIMER_ADJ_CONS_UP_SHIFT;
+	mask = RBIF_TIMER_ADJ_CONS_UP_MASK | RBIF_TIMER_ADJ_CONS_DOWN_MASK;
+	cpr_masked_write(drv, REG_RBIF_TIMER_ADJUST, mask, val);
+	cpr_masked_write(drv, REG_RBCPR_CTL,
+			 RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN |
+			 RBCPR_CTL_SW_AUTO_CONT_ACK_EN,
+			 corner->save_ctl);
+	cpr_irq_set(drv, corner->save_irq);
+
+	if (cpr_is_allowed(drv) && corner->max_uV > corner->min_uV)
+		val = RBCPR_CTL_LOOP_EN;
+	else
+		val = 0;
+	cpr_ctl_modify(drv, RBCPR_CTL_LOOP_EN, val);
+}
+
+static void cpr_ctl_disable(struct cpr_drv *drv)
+{
+	cpr_irq_set(drv, 0);
+	cpr_ctl_modify(drv, RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN |
+		       RBCPR_CTL_SW_AUTO_CONT_ACK_EN, 0);
+	cpr_masked_write(drv, REG_RBIF_TIMER_ADJUST,
+			 RBIF_TIMER_ADJ_CONS_UP_MASK |
+			 RBIF_TIMER_ADJ_CONS_DOWN_MASK, 0);
+	cpr_irq_clr(drv);
+	cpr_write(drv, REG_RBIF_CONT_ACK_CMD, 1);
+	cpr_write(drv, REG_RBIF_CONT_NACK_CMD, 1);
+	cpr_ctl_modify(drv, RBCPR_CTL_LOOP_EN, 0);
+}
+
+static bool cpr_ctl_is_enabled(struct cpr_drv *drv)
+{
+	u32 reg_val;
+
+	reg_val = cpr_read(drv, REG_RBCPR_CTL);
+	return reg_val & RBCPR_CTL_LOOP_EN;
+}
+
+static bool cpr_ctl_is_busy(struct cpr_drv *drv)
+{
+	u32 reg_val;
+
+	reg_val = cpr_read(drv, REG_RBCPR_RESULT_0);
+	return reg_val & RBCPR_RESULT0_BUSY_MASK;
+}
+
+static void cpr_corner_save(struct cpr_drv *drv, struct corner *corner)
+{
+	corner->save_ctl = cpr_read(drv, REG_RBCPR_CTL);
+	corner->save_irq = cpr_read(drv, REG_RBIF_IRQ_EN(0));
+}
+
+static void cpr_corner_restore(struct cpr_drv *drv, struct corner *corner)
+{
+	u32 gcnt, ctl, irq, ro_sel, step_quot;
+	struct fuse_corner *fuse = corner->fuse_corner;
+	const struct cpr_desc *desc = drv->desc;
+	int i;
+
+	ro_sel = fuse->ring_osc_idx;
+	gcnt = drv->gcnt;
+	gcnt |= fuse->quot - corner->quot_adjust;
+
+	/* Program the step quotient and idle clocks */
+	step_quot = desc->idle_clocks << RBCPR_STEP_QUOT_IDLE_CLK_SHIFT;
+	step_quot |= fuse->step_quot & RBCPR_STEP_QUOT_STEPQUOT_MASK;
+	cpr_write(drv, REG_RBCPR_STEP_QUOT, step_quot);
+
+	/* Clear the target quotient value and gate count of all ROs */
+	for (i = 0; i < CPR_NUM_RING_OSC; i++)
+		cpr_write(drv, REG_RBCPR_GCNT_TARGET(i), 0);
+
+	cpr_write(drv, REG_RBCPR_GCNT_TARGET(ro_sel), gcnt);
+	ctl = corner->save_ctl;
+	cpr_write(drv, REG_RBCPR_CTL, ctl);
+	irq = corner->save_irq;
+	cpr_irq_set(drv, irq);
+	dev_dbg(drv->dev, "gcnt = %#08x, ctl = %#08x, irq = %#08x\n", gcnt,
+		ctl, irq);
+}
+
+static void cpr_set_acc(struct regmap *tcsr, struct fuse_corner *f,
+			struct fuse_corner *end)
+{
+	if (f == end)
+		return;
+
+	if (f < end) {
+		for (f += 1; f <= end; f++)
+			regmap_multi_reg_write(tcsr, f->accs, f->num_accs);
+	} else {
+		for (f -= 1; f >= end; f--)
+			regmap_multi_reg_write(tcsr, f->accs, f->num_accs);
+	}
+}
+
+static int cpr_pre_voltage(struct cpr_drv *drv,
+			   struct fuse_corner *fuse_corner,
+			   enum voltage_change_dir dir)
+{
+	struct fuse_corner *prev_fuse_corner = drv->corner->fuse_corner;
+
+	if (drv->tcsr && dir == DOWN)
+		cpr_set_acc(drv->tcsr, prev_fuse_corner, fuse_corner);
+
+	return 0;
+}
+
+static int cpr_post_voltage(struct cpr_drv *drv,
+			    struct fuse_corner *fuse_corner,
+			    enum voltage_change_dir dir)
+{
+	struct fuse_corner *prev_fuse_corner = drv->corner->fuse_corner;
+
+	if (drv->tcsr && dir == UP)
+		cpr_set_acc(drv->tcsr, prev_fuse_corner, fuse_corner);
+
+	return 0;
+}
+
+static int cpr_scale_voltage(struct cpr_drv *drv, struct corner *corner,
+			     int new_uV, enum voltage_change_dir dir)
+{
+	int ret;
+	struct fuse_corner *fuse_corner = corner->fuse_corner;
+
+	ret = cpr_pre_voltage(drv, fuse_corner, dir);
+	if (ret)
+		return ret;
+
+	ret = regulator_set_voltage(drv->vdd_apc, new_uV, new_uV);
+	if (ret) {
+		dev_err_ratelimited(drv->dev, "failed to set apc voltage %d\n",
+				    new_uV);
+		return ret;
+	}
+
+	ret = cpr_post_voltage(drv, fuse_corner, dir);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static unsigned int cpr_get_cur_perf_state(struct cpr_drv *drv)
+{
+	return drv->corner ? drv->corner - drv->corners + 1 : 0;
+}
+
+static int cpr_scale(struct cpr_drv *drv, enum voltage_change_dir dir)
+{
+	u32 val, error_steps, reg_mask;
+	int last_uV, new_uV, step_uV, ret;
+	struct corner *corner;
+	const struct cpr_desc *desc = drv->desc;
+
+	if (dir != UP && dir != DOWN)
+		return 0;
+
+	step_uV = regulator_get_linear_step(drv->vdd_apc);
+	if (!step_uV)
+		return -EINVAL;
+
+	corner = drv->corner;
+
+	val = cpr_read(drv, REG_RBCPR_RESULT_0);
+
+	error_steps = val >> RBCPR_RESULT0_ERROR_STEPS_SHIFT;
+	error_steps &= RBCPR_RESULT0_ERROR_STEPS_MASK;
+	last_uV = corner->last_uV;
+
+	if (dir == UP) {
+		if (desc->clamp_timer_interval &&
+		    error_steps < desc->up_threshold) {
+			/*
+			 * Handle the case where another measurement started
+			 * after the interrupt was triggered due to a core
+			 * exiting from power collapse.
+			 */
+			error_steps = max(desc->up_threshold,
+					  desc->vdd_apc_step_up_limit);
+		}
+
+		if (last_uV >= corner->max_uV) {
+			cpr_irq_clr_nack(drv);
+
+			/* Maximize the UP threshold */
+			reg_mask = RBCPR_CTL_UP_THRESHOLD_MASK;
+			reg_mask <<= RBCPR_CTL_UP_THRESHOLD_SHIFT;
+			val = reg_mask;
+			cpr_ctl_modify(drv, reg_mask, val);
+
+			/* Disable UP interrupt */
+			cpr_irq_set(drv, CPR_INT_DEFAULT & ~CPR_INT_UP);
+
+			return 0;
+		}
+
+		if (error_steps > desc->vdd_apc_step_up_limit)
+			error_steps = desc->vdd_apc_step_up_limit;
+
+		/* Calculate new voltage */
+		new_uV = last_uV + error_steps * step_uV;
+		new_uV = min(new_uV, corner->max_uV);
+
+		dev_dbg(drv->dev,
+			"UP: -> new_uV: %d last_uV: %d perf state: %u\n",
+			new_uV, last_uV, cpr_get_cur_perf_state(drv));
+	} else {
+		if (desc->clamp_timer_interval &&
+		    error_steps < desc->down_threshold) {
+			/*
+			 * Handle the case where another measurement started
+			 * after the interrupt was triggered due to a core
+			 * exiting from power collapse.
+			 */
+			error_steps = max(desc->down_threshold,
+					  desc->vdd_apc_step_down_limit);
+		}
+
+		if (last_uV <= corner->min_uV) {
+			cpr_irq_clr_nack(drv);
+
+			/* Enable auto nack down */
+			reg_mask = RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN;
+			val = RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN;
+
+			cpr_ctl_modify(drv, reg_mask, val);
+
+			/* Disable DOWN interrupt */
+			cpr_irq_set(drv, CPR_INT_DEFAULT & ~CPR_INT_DOWN);
+
+			return 0;
+		}
+
+		if (error_steps > desc->vdd_apc_step_down_limit)
+			error_steps = desc->vdd_apc_step_down_limit;
+
+		/* Calculate new voltage */
+		new_uV = last_uV - error_steps * step_uV;
+		new_uV = max(new_uV, corner->min_uV);
+
+		dev_dbg(drv->dev,
+			"DOWN: -> new_uV: %d last_uV: %d perf state: %u\n",
+			new_uV, last_uV, cpr_get_cur_perf_state(drv));
+	}
+
+	ret = cpr_scale_voltage(drv, corner, new_uV, dir);
+	if (ret) {
+		cpr_irq_clr_nack(drv);
+		return ret;
+	}
+	drv->corner->last_uV = new_uV;
+
+	if (dir == UP) {
+		/* Disable auto nack down */
+		reg_mask = RBCPR_CTL_SW_AUTO_CONT_NACK_DN_EN;
+		val = 0;
+	} else {
+		/* Restore default threshold for UP */
+		reg_mask = RBCPR_CTL_UP_THRESHOLD_MASK;
+		reg_mask <<= RBCPR_CTL_UP_THRESHOLD_SHIFT;
+		val = desc->up_threshold;
+		val <<= RBCPR_CTL_UP_THRESHOLD_SHIFT;
+	}
+
+	cpr_ctl_modify(drv, reg_mask, val);
+
+	/* Re-enable default interrupts */
+	cpr_irq_set(drv, CPR_INT_DEFAULT);
+
+	/* Ack */
+	cpr_irq_clr_ack(drv);
+
+	return 0;
+}
+
+static irqreturn_t cpr_irq_handler(int irq, void *dev)
+{
+	struct cpr_drv *drv = dev;
+	const struct cpr_desc *desc = drv->desc;
+	irqreturn_t ret = IRQ_HANDLED;
+	u32 val;
+
+	mutex_lock(&drv->lock);
+
+	val = cpr_read(drv, REG_RBIF_IRQ_STATUS);
+	if (drv->flags & FLAGS_IGNORE_1ST_IRQ_STATUS)
+		val = cpr_read(drv, REG_RBIF_IRQ_STATUS);
+
+	dev_dbg(drv->dev, "IRQ_STATUS = %#02x\n", val);
+
+	if (!cpr_ctl_is_enabled(drv)) {
+		dev_dbg(drv->dev, "CPR is disabled\n");
+		ret = IRQ_NONE;
+	} else if (cpr_ctl_is_busy(drv) && !desc->clamp_timer_interval) {
+		dev_dbg(drv->dev, "CPR measurement is not ready\n");
+	} else if (!cpr_is_allowed(drv)) {
+		val = cpr_read(drv, REG_RBCPR_CTL);
+		dev_err_ratelimited(drv->dev,
+				    "Interrupt broken? RBCPR_CTL = %#02x\n",
+				    val);
+		ret = IRQ_NONE;
+	} else {
+		/*
+		 * Following sequence of handling is as per each IRQ's
+		 * priority
+		 */
+		if (val & CPR_INT_UP) {
+			cpr_scale(drv, UP);
+		} else if (val & CPR_INT_DOWN) {
+			cpr_scale(drv, DOWN);
+		} else if (val & CPR_INT_MIN) {
+			cpr_irq_clr_nack(drv);
+		} else if (val & CPR_INT_MAX) {
+			cpr_irq_clr_nack(drv);
+		} else if (val & CPR_INT_MID) {
+			/* RBCPR_CTL_SW_AUTO_CONT_ACK_EN is enabled */
+			dev_dbg(drv->dev, "IRQ occurred for Mid Flag\n");
+		} else {
+			dev_dbg(drv->dev,
+				"IRQ occurred for unknown flag (%#08x)\n", val);
+		}
+
+		/* Save register values for the corner */
+		cpr_corner_save(drv, drv->corner);
+	}
+
+	mutex_unlock(&drv->lock);
+
+	return ret;
+}
+
+static int cpr_enable(struct cpr_drv *drv)
+{
+	int ret;
+
+	ret = regulator_enable(drv->vdd_apc);
+	if (ret)
+		return ret;
+
+	mutex_lock(&drv->lock);
+
+	if (cpr_is_allowed(drv) && drv->corner) {
+		cpr_irq_clr(drv);
+		cpr_corner_restore(drv, drv->corner);
+		cpr_ctl_enable(drv, drv->corner);
+	}
+
+	mutex_unlock(&drv->lock);
+
+	return 0;
+}
+
+static int cpr_disable(struct cpr_drv *drv)
+{
+	mutex_lock(&drv->lock);
+
+	if (cpr_is_allowed(drv)) {
+		cpr_ctl_disable(drv);
+		cpr_irq_clr(drv);
+	}
+
+	mutex_unlock(&drv->lock);
+
+	return regulator_disable(drv->vdd_apc);
+}
+
+static int cpr_config(struct cpr_drv *drv)
+{
+	int i;
+	u32 val, gcnt;
+	struct corner *corner;
+	const struct cpr_desc *desc = drv->desc;
+
+	/* Disable interrupt and CPR */
+	cpr_write(drv, REG_RBIF_IRQ_EN(0), 0);
+	cpr_write(drv, REG_RBCPR_CTL, 0);
+
+	/* Program the default HW ceiling, floor and vlevel */
+	val = (RBIF_LIMIT_CEILING_DEFAULT & RBIF_LIMIT_CEILING_MASK)
+		<< RBIF_LIMIT_CEILING_SHIFT;
+	val |= RBIF_LIMIT_FLOOR_DEFAULT & RBIF_LIMIT_FLOOR_MASK;
+	cpr_write(drv, REG_RBIF_LIMIT, val);
+	cpr_write(drv, REG_RBIF_SW_VLEVEL, RBIF_SW_VLEVEL_DEFAULT);
+
+	/*
+	 * Clear the target quotient value and gate count of all
+	 * ring oscillators
+	 */
+	for (i = 0; i < CPR_NUM_RING_OSC; i++)
+		cpr_write(drv, REG_RBCPR_GCNT_TARGET(i), 0);
+
+	/* Init and save gcnt */
+	gcnt = (drv->ref_clk_khz * desc->gcnt_us) / 1000;
+	gcnt = gcnt & RBCPR_GCNT_TARGET_GCNT_MASK;
+	gcnt <<= RBCPR_GCNT_TARGET_GCNT_SHIFT;
+	drv->gcnt = gcnt;
+
+	/* Program the delay count for the timer */
+	val = (drv->ref_clk_khz * desc->timer_delay_us) / 1000;
+	cpr_write(drv, REG_RBCPR_TIMER_INTERVAL, val);
+	dev_dbg(drv->dev, "Timer count: %#0x (for %d us)\n", val,
+		desc->timer_delay_us);
+
+	/* Program Consecutive Up & Down */
+	val = desc->timer_cons_down << RBIF_TIMER_ADJ_CONS_DOWN_SHIFT;
+	val |= desc->timer_cons_up << RBIF_TIMER_ADJ_CONS_UP_SHIFT;
+	val |= desc->clamp_timer_interval << RBIF_TIMER_ADJ_CLAMP_INT_SHIFT;
+	cpr_write(drv, REG_RBIF_TIMER_ADJUST, val);
+
+	/* Program the control register */
+	val = desc->up_threshold << RBCPR_CTL_UP_THRESHOLD_SHIFT;
+	val |= desc->down_threshold << RBCPR_CTL_DN_THRESHOLD_SHIFT;
+	val |= RBCPR_CTL_TIMER_EN | RBCPR_CTL_COUNT_MODE;
+	val |= RBCPR_CTL_SW_AUTO_CONT_ACK_EN;
+	cpr_write(drv, REG_RBCPR_CTL, val);
+
+	for (i = 0; i < drv->num_corners; i++) {
+		corner = &drv->corners[i];
+		corner->save_ctl = val;
+		corner->save_irq = CPR_INT_DEFAULT;
+	}
+
+	cpr_irq_set(drv, CPR_INT_DEFAULT);
+
+	val = cpr_read(drv, REG_RBCPR_VERSION);
+	if (val <= RBCPR_VER_2)
+		drv->flags |= FLAGS_IGNORE_1ST_IRQ_STATUS;
+
+	return 0;
+}
+
+static int cpr_set_performance_state(struct generic_pm_domain *domain,
+				     unsigned int state)
+{
+	struct cpr_drv *drv = container_of(domain, struct cpr_drv, pd);
+	struct corner *corner, *end;
+	enum voltage_change_dir dir;
+	int ret = 0, new_uV;
+
+	mutex_lock(&drv->lock);
+
+	dev_dbg(drv->dev, "%s: setting perf state: %u (prev state: %u)\n",
+		__func__, state, cpr_get_cur_perf_state(drv));
+
+	/*
+	 * Determine new corner we're going to.
+	 * Remove one since lowest performance state is 1.
+	 */
+	corner = drv->corners + state - 1;
+	end = &drv->corners[drv->num_corners - 1];
+	if (corner > end || corner < drv->corners) {
+		ret = -EINVAL;
+		goto unlock;
+	}
+
+	/* Determine direction */
+	if (drv->corner > corner)
+		dir = DOWN;
+	else if (drv->corner < corner)
+		dir = UP;
+	else
+		dir = NO_CHANGE;
+
+	if (cpr_is_allowed(drv))
+		new_uV = corner->last_uV;
+	else
+		new_uV = corner->uV;
+
+	if (cpr_is_allowed(drv))
+		cpr_ctl_disable(drv);
+
+	ret = cpr_scale_voltage(drv, corner, new_uV, dir);
+	if (ret)
+		goto unlock;
+
+	if (cpr_is_allowed(drv)) {
+		cpr_irq_clr(drv);
+		if (drv->corner != corner)
+			cpr_corner_restore(drv, corner);
+		cpr_ctl_enable(drv, corner);
+	}
+
+	drv->corner = corner;
+
+unlock:
+	mutex_unlock(&drv->lock);
+
+	return ret;
+}
+
+static int
+cpr_populate_ring_osc_idx(struct cpr_drv *drv)
+{
+	struct fuse_corner *fuse = drv->fuse_corners;
+	struct fuse_corner *end = fuse + drv->desc->num_fuse_corners;
+	const struct cpr_fuse *fuses = drv->cpr_fuses;
+	u32 data;
+	int ret;
+
+	for (; fuse < end; fuse++, fuses++) {
+		ret = nvmem_cell_read_variable_le_u32(drv->dev, fuses->ring_osc, &data);
+		if (ret)
+			return ret;
+		fuse->ring_osc_idx = data;
+	}
+
+	return 0;
+}
+
+static int cpr_read_fuse_uV(const struct cpr_desc *desc,
+			    const struct fuse_corner_data *fdata,
+			    const char *init_v_efuse,
+			    int step_volt,
+			    struct cpr_drv *drv)
+{
+	int step_size_uV, steps, uV;
+	u32 bits = 0;
+	int ret;
+
+	ret = nvmem_cell_read_variable_le_u32(drv->dev, init_v_efuse, &bits);
+	if (ret)
+		return ret;
+
+	steps = bits & ~BIT(desc->cpr_fuses.init_voltage_width - 1);
+	/* Not two's complement.. instead highest bit is sign bit */
+	if (bits & BIT(desc->cpr_fuses.init_voltage_width - 1))
+		steps = -steps;
+
+	step_size_uV = desc->cpr_fuses.init_voltage_step;
+
+	uV = fdata->ref_uV + steps * step_size_uV;
+	return DIV_ROUND_UP(uV, step_volt) * step_volt;
+}
+
+static int cpr_fuse_corner_init(struct cpr_drv *drv)
+{
+	const struct cpr_desc *desc = drv->desc;
+	const struct cpr_fuse *fuses = drv->cpr_fuses;
+	const struct acc_desc *acc_desc = drv->acc_desc;
+	int i;
+	unsigned int step_volt;
+	struct fuse_corner_data *fdata;
+	struct fuse_corner *fuse, *end;
+	int uV;
+	const struct reg_sequence *accs;
+	int ret;
+
+	accs = acc_desc->settings;
+
+	step_volt = regulator_get_linear_step(drv->vdd_apc);
+	if (!step_volt)
+		return -EINVAL;
+
+	/* Populate fuse_corner members */
+	fuse = drv->fuse_corners;
+	end = &fuse[desc->num_fuse_corners - 1];
+	fdata = desc->cpr_fuses.fuse_corner_data;
+
+	for (i = 0; fuse <= end; fuse++, fuses++, i++, fdata++) {
+		/*
+		 * Update SoC voltages: platforms might choose a different
+		 * regulators than the one used to characterize the algorithms
+		 * (ie, init_voltage_step).
+		 */
+		fdata->min_uV = roundup(fdata->min_uV, step_volt);
+		fdata->max_uV = roundup(fdata->max_uV, step_volt);
+
+		/* Populate uV */
+		uV = cpr_read_fuse_uV(desc, fdata, fuses->init_voltage,
+				      step_volt, drv);
+		if (uV < 0)
+			return uV;
+
+		fuse->min_uV = fdata->min_uV;
+		fuse->max_uV = fdata->max_uV;
+		fuse->uV = clamp(uV, fuse->min_uV, fuse->max_uV);
+
+		if (fuse == end) {
+			/*
+			 * Allow the highest fuse corner's PVS voltage to
+			 * define the ceiling voltage for that corner in order
+			 * to support SoC's in which variable ceiling values
+			 * are required.
+			 */
+			end->max_uV = max(end->max_uV, end->uV);
+		}
+
+		/* Populate target quotient by scaling */
+		ret = nvmem_cell_read_variable_le_u32(drv->dev, fuses->quotient, &fuse->quot);
+		if (ret)
+			return ret;
+
+		fuse->quot *= fdata->quot_scale;
+		fuse->quot += fdata->quot_offset;
+		fuse->quot += fdata->quot_adjust;
+		fuse->step_quot = desc->step_quot[fuse->ring_osc_idx];
+
+		/* Populate acc settings */
+		fuse->accs = accs;
+		fuse->num_accs = acc_desc->num_regs_per_fuse;
+		accs += acc_desc->num_regs_per_fuse;
+	}
+
+	/*
+	 * Restrict all fuse corner PVS voltages based upon per corner
+	 * ceiling and floor voltages.
+	 */
+	for (fuse = drv->fuse_corners, i = 0; fuse <= end; fuse++, i++) {
+		if (fuse->uV > fuse->max_uV)
+			fuse->uV = fuse->max_uV;
+		else if (fuse->uV < fuse->min_uV)
+			fuse->uV = fuse->min_uV;
+
+		ret = regulator_is_supported_voltage(drv->vdd_apc,
+						     fuse->min_uV,
+						     fuse->min_uV);
+		if (!ret) {
+			dev_err(drv->dev,
+				"min uV: %d (fuse corner: %d) not supported by regulator\n",
+				fuse->min_uV, i);
+			return -EINVAL;
+		}
+
+		ret = regulator_is_supported_voltage(drv->vdd_apc,
+						     fuse->max_uV,
+						     fuse->max_uV);
+		if (!ret) {
+			dev_err(drv->dev,
+				"max uV: %d (fuse corner: %d) not supported by regulator\n",
+				fuse->max_uV, i);
+			return -EINVAL;
+		}
+
+		dev_dbg(drv->dev,
+			"fuse corner %d: [%d %d %d] RO%hhu quot %d squot %d\n",
+			i, fuse->min_uV, fuse->uV, fuse->max_uV,
+			fuse->ring_osc_idx, fuse->quot, fuse->step_quot);
+	}
+
+	return 0;
+}
+
+static int cpr_calculate_scaling(const char *quot_offset,
+				 struct cpr_drv *drv,
+				 const struct fuse_corner_data *fdata,
+				 const struct corner *corner)
+{
+	u32 quot_diff = 0;
+	unsigned long freq_diff;
+	int scaling;
+	const struct fuse_corner *fuse, *prev_fuse;
+	int ret;
+
+	fuse = corner->fuse_corner;
+	prev_fuse = fuse - 1;
+
+	if (quot_offset) {
+		ret = nvmem_cell_read_variable_le_u32(drv->dev, quot_offset, &quot_diff);
+		if (ret)
+			return ret;
+
+		quot_diff *= fdata->quot_offset_scale;
+		quot_diff += fdata->quot_offset_adjust;
+	} else {
+		quot_diff = fuse->quot - prev_fuse->quot;
+	}
+
+	freq_diff = fuse->max_freq - prev_fuse->max_freq;
+	freq_diff /= 1000000; /* Convert to MHz */
+	scaling = 1000 * quot_diff / freq_diff;
+	return min(scaling, fdata->max_quot_scale);
+}
+
+static int cpr_interpolate(const struct corner *corner, int step_volt,
+			   const struct fuse_corner_data *fdata)
+{
+	unsigned long f_high, f_low, f_diff;
+	int uV_high, uV_low, uV;
+	u64 temp, temp_limit;
+	const struct fuse_corner *fuse, *prev_fuse;
+
+	fuse = corner->fuse_corner;
+	prev_fuse = fuse - 1;
+
+	f_high = fuse->max_freq;
+	f_low = prev_fuse->max_freq;
+	uV_high = fuse->uV;
+	uV_low = prev_fuse->uV;
+	f_diff = fuse->max_freq - corner->freq;
+
+	/*
+	 * Don't interpolate in the wrong direction. This could happen
+	 * if the adjusted fuse voltage overlaps with the previous fuse's
+	 * adjusted voltage.
+	 */
+	if (f_high <= f_low || uV_high <= uV_low || f_high <= corner->freq)
+		return corner->uV;
+
+	temp = f_diff * (uV_high - uV_low);
+	temp = div64_ul(temp, f_high - f_low);
+
+	/*
+	 * max_volt_scale has units of uV/MHz while freq values
+	 * have units of Hz.  Divide by 1000000 to convert to.
+	 */
+	temp_limit = f_diff * fdata->max_volt_scale;
+	do_div(temp_limit, 1000000);
+
+	uV = uV_high - min(temp, temp_limit);
+	return roundup(uV, step_volt);
+}
+
+static unsigned int cpr_get_fuse_corner(struct dev_pm_opp *opp)
+{
+	struct device_node *np;
+	unsigned int fuse_corner = 0;
+
+	np = dev_pm_opp_get_of_node(opp);
+	if (of_property_read_u32(np, "qcom,opp-fuse-level", &fuse_corner))
+		pr_err("%s: missing 'qcom,opp-fuse-level' property\n",
+		       __func__);
+
+	of_node_put(np);
+
+	return fuse_corner;
+}
+
+static unsigned long cpr_get_opp_hz_for_req(struct dev_pm_opp *ref,
+					    struct device *cpu_dev)
+{
+	u64 rate = 0;
+	struct device_node *ref_np;
+	struct device_node *desc_np;
+	struct device_node *child_np = NULL;
+	struct device_node *child_req_np = NULL;
+
+	desc_np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
+	if (!desc_np)
+		return 0;
+
+	ref_np = dev_pm_opp_get_of_node(ref);
+	if (!ref_np)
+		goto out_ref;
+
+	do {
+		of_node_put(child_req_np);
+		child_np = of_get_next_available_child(desc_np, child_np);
+		child_req_np = of_parse_phandle(child_np, "required-opps", 0);
+	} while (child_np && child_req_np != ref_np);
+
+	if (child_np && child_req_np == ref_np)
+		of_property_read_u64(child_np, "opp-hz", &rate);
+
+	of_node_put(child_req_np);
+	of_node_put(child_np);
+	of_node_put(ref_np);
+out_ref:
+	of_node_put(desc_np);
+
+	return (unsigned long) rate;
+}
+
+static int cpr_corner_init(struct cpr_drv *drv)
+{
+	const struct cpr_desc *desc = drv->desc;
+	const struct cpr_fuse *fuses = drv->cpr_fuses;
+	int i, level, scaling = 0;
+	unsigned int fnum, fc;
+	const char *quot_offset;
+	struct fuse_corner *fuse, *prev_fuse;
+	struct corner *corner, *end;
+	struct corner_data *cdata;
+	const struct fuse_corner_data *fdata;
+	bool apply_scaling;
+	unsigned long freq_diff, freq_diff_mhz;
+	unsigned long freq;
+	int step_volt = regulator_get_linear_step(drv->vdd_apc);
+	struct dev_pm_opp *opp;
+
+	if (!step_volt)
+		return -EINVAL;
+
+	corner = drv->corners;
+	end = &corner[drv->num_corners - 1];
+
+	cdata = devm_kcalloc(drv->dev, drv->num_corners,
+			     sizeof(struct corner_data),
+			     GFP_KERNEL);
+	if (!cdata)
+		return -ENOMEM;
+
+	/*
+	 * Store maximum frequency for each fuse corner based on the frequency
+	 * plan
+	 */
+	for (level = 1; level <= drv->num_corners; level++) {
+		opp = dev_pm_opp_find_level_exact(&drv->pd.dev, level);
+		if (IS_ERR(opp))
+			return -EINVAL;
+		fc = cpr_get_fuse_corner(opp);
+		if (!fc) {
+			dev_pm_opp_put(opp);
+			return -EINVAL;
+		}
+		fnum = fc - 1;
+		freq = cpr_get_opp_hz_for_req(opp, drv->attached_cpu_dev);
+		if (!freq) {
+			dev_pm_opp_put(opp);
+			return -EINVAL;
+		}
+		cdata[level - 1].fuse_corner = fnum;
+		cdata[level - 1].freq = freq;
+
+		fuse = &drv->fuse_corners[fnum];
+		dev_dbg(drv->dev, "freq: %lu level: %u fuse level: %u\n",
+			freq, dev_pm_opp_get_level(opp) - 1, fnum);
+		if (freq > fuse->max_freq)
+			fuse->max_freq = freq;
+		dev_pm_opp_put(opp);
+	}
+
+	/*
+	 * Get the quotient adjustment scaling factor, according to:
+	 *
+	 * scaling = min(1000 * (QUOT(corner_N) - QUOT(corner_N-1))
+	 *		/ (freq(corner_N) - freq(corner_N-1)), max_factor)
+	 *
+	 * QUOT(corner_N):	quotient read from fuse for fuse corner N
+	 * QUOT(corner_N-1):	quotient read from fuse for fuse corner (N - 1)
+	 * freq(corner_N):	max frequency in MHz supported by fuse corner N
+	 * freq(corner_N-1):	max frequency in MHz supported by fuse corner
+	 *			 (N - 1)
+	 *
+	 * Then walk through the corners mapped to each fuse corner
+	 * and calculate the quotient adjustment for each one using the
+	 * following formula:
+	 *
+	 * quot_adjust = (freq_max - freq_corner) * scaling / 1000
+	 *
+	 * freq_max: max frequency in MHz supported by the fuse corner
+	 * freq_corner: frequency in MHz corresponding to the corner
+	 * scaling: calculated from above equation
+	 *
+	 *
+	 *     +                           +
+	 *     |                         v |
+	 *   q |           f c           o |           f c
+	 *   u |         c               l |         c
+	 *   o |       f                 t |       f
+	 *   t |     c                   a |     c
+	 *     | c f                     g | c f
+	 *     |                         e |
+	 *     +---------------            +----------------
+	 *       0 1 2 3 4 5 6               0 1 2 3 4 5 6
+	 *          corner                      corner
+	 *
+	 *    c = corner
+	 *    f = fuse corner
+	 *
+	 */
+	for (apply_scaling = false, i = 0; corner <= end; corner++, i++) {
+		fnum = cdata[i].fuse_corner;
+		fdata = &desc->cpr_fuses.fuse_corner_data[fnum];
+		quot_offset = fuses[fnum].quotient_offset;
+		fuse = &drv->fuse_corners[fnum];
+		if (fnum)
+			prev_fuse = &drv->fuse_corners[fnum - 1];
+		else
+			prev_fuse = NULL;
+
+		corner->fuse_corner = fuse;
+		corner->freq = cdata[i].freq;
+		corner->uV = fuse->uV;
+
+		if (prev_fuse && cdata[i - 1].freq == prev_fuse->max_freq) {
+			scaling = cpr_calculate_scaling(quot_offset, drv,
+							fdata, corner);
+			if (scaling < 0)
+				return scaling;
+
+			apply_scaling = true;
+		} else if (corner->freq == fuse->max_freq) {
+			/* This is a fuse corner; don't scale anything */
+			apply_scaling = false;
+		}
+
+		if (apply_scaling) {
+			freq_diff = fuse->max_freq - corner->freq;
+			freq_diff_mhz = freq_diff / 1000000;
+			corner->quot_adjust = scaling * freq_diff_mhz / 1000;
+
+			corner->uV = cpr_interpolate(corner, step_volt, fdata);
+		}
+
+		corner->max_uV = fuse->max_uV;
+		corner->min_uV = fuse->min_uV;
+		corner->uV = clamp(corner->uV, corner->min_uV, corner->max_uV);
+		corner->last_uV = corner->uV;
+
+		/* Reduce the ceiling voltage if needed */
+		if (desc->reduce_to_corner_uV && corner->uV < corner->max_uV)
+			corner->max_uV = corner->uV;
+		else if (desc->reduce_to_fuse_uV && fuse->uV < corner->max_uV)
+			corner->max_uV = max(corner->min_uV, fuse->uV);
+
+		dev_dbg(drv->dev, "corner %d: [%d %d %d] quot %d\n", i,
+			corner->min_uV, corner->uV, corner->max_uV,
+			fuse->quot - corner->quot_adjust);
+	}
+
+	return 0;
+}
+
+static const struct cpr_fuse *cpr_get_fuses(struct cpr_drv *drv)
+{
+	const struct cpr_desc *desc = drv->desc;
+	struct cpr_fuse *fuses;
+	int i;
+
+	fuses = devm_kcalloc(drv->dev, desc->num_fuse_corners,
+			     sizeof(struct cpr_fuse),
+			     GFP_KERNEL);
+	if (!fuses)
+		return ERR_PTR(-ENOMEM);
+
+	for (i = 0; i < desc->num_fuse_corners; i++) {
+		char tbuf[32];
+
+		snprintf(tbuf, 32, "cpr_ring_osc%d", i + 1);
+		fuses[i].ring_osc = devm_kstrdup(drv->dev, tbuf, GFP_KERNEL);
+		if (!fuses[i].ring_osc)
+			return ERR_PTR(-ENOMEM);
+
+		snprintf(tbuf, 32, "cpr_init_voltage%d", i + 1);
+		fuses[i].init_voltage = devm_kstrdup(drv->dev, tbuf,
+						     GFP_KERNEL);
+		if (!fuses[i].init_voltage)
+			return ERR_PTR(-ENOMEM);
+
+		snprintf(tbuf, 32, "cpr_quotient%d", i + 1);
+		fuses[i].quotient = devm_kstrdup(drv->dev, tbuf, GFP_KERNEL);
+		if (!fuses[i].quotient)
+			return ERR_PTR(-ENOMEM);
+
+		snprintf(tbuf, 32, "cpr_quotient_offset%d", i + 1);
+		fuses[i].quotient_offset = devm_kstrdup(drv->dev, tbuf,
+							GFP_KERNEL);
+		if (!fuses[i].quotient_offset)
+			return ERR_PTR(-ENOMEM);
+	}
+
+	return fuses;
+}
+
+static void cpr_set_loop_allowed(struct cpr_drv *drv)
+{
+	drv->loop_disabled = false;
+}
+
+static int cpr_init_parameters(struct cpr_drv *drv)
+{
+	const struct cpr_desc *desc = drv->desc;
+	struct clk *clk;
+
+	clk = clk_get(drv->dev, "ref");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	drv->ref_clk_khz = clk_get_rate(clk) / 1000;
+	clk_put(clk);
+
+	if (desc->timer_cons_up > RBIF_TIMER_ADJ_CONS_UP_MASK ||
+	    desc->timer_cons_down > RBIF_TIMER_ADJ_CONS_DOWN_MASK ||
+	    desc->up_threshold > RBCPR_CTL_UP_THRESHOLD_MASK ||
+	    desc->down_threshold > RBCPR_CTL_DN_THRESHOLD_MASK ||
+	    desc->idle_clocks > RBCPR_STEP_QUOT_IDLE_CLK_MASK ||
+	    desc->clamp_timer_interval > RBIF_TIMER_ADJ_CLAMP_INT_MASK)
+		return -EINVAL;
+
+	dev_dbg(drv->dev, "up threshold = %u, down threshold = %u\n",
+		desc->up_threshold, desc->down_threshold);
+
+	return 0;
+}
+
+static int cpr_find_initial_corner(struct cpr_drv *drv)
+{
+	unsigned long rate;
+	const struct corner *end;
+	struct corner *iter;
+	unsigned int i = 0;
+
+	if (!drv->cpu_clk) {
+		dev_err(drv->dev, "cannot get rate from NULL clk\n");
+		return -EINVAL;
+	}
+
+	end = &drv->corners[drv->num_corners - 1];
+	rate = clk_get_rate(drv->cpu_clk);
+
+	/*
+	 * Some bootloaders set a CPU clock frequency that is not defined
+	 * in the OPP table. When running at an unlisted frequency,
+	 * cpufreq_online() will change to the OPP which has the lowest
+	 * frequency, at or above the unlisted frequency.
+	 * Since cpufreq_online() always "rounds up" in the case of an
+	 * unlisted frequency, this function always "rounds down" in case
+	 * of an unlisted frequency. That way, when cpufreq_online()
+	 * triggers the first ever call to cpr_set_performance_state(),
+	 * it will correctly determine the direction as UP.
+	 */
+	for (iter = drv->corners; iter <= end; iter++) {
+		if (iter->freq > rate)
+			break;
+		i++;
+		if (iter->freq == rate) {
+			drv->corner = iter;
+			break;
+		}
+		if (iter->freq < rate)
+			drv->corner = iter;
+	}
+
+	if (!drv->corner) {
+		dev_err(drv->dev, "boot up corner not found\n");
+		return -EINVAL;
+	}
+
+	dev_dbg(drv->dev, "boot up perf state: %u\n", i);
+
+	return 0;
+}
+
+static const struct cpr_desc qcs404_cpr_desc = {
+	.num_fuse_corners = 3,
+	.min_diff_quot = CPR_FUSE_MIN_QUOT_DIFF,
+	.step_quot = (int []){ 25, 25, 25, },
+	.timer_delay_us = 5000,
+	.timer_cons_up = 0,
+	.timer_cons_down = 2,
+	.up_threshold = 1,
+	.down_threshold = 3,
+	.idle_clocks = 15,
+	.gcnt_us = 1,
+	.vdd_apc_step_up_limit = 1,
+	.vdd_apc_step_down_limit = 1,
+	.cpr_fuses = {
+		.init_voltage_step = 8000,
+		.init_voltage_width = 6,
+		.fuse_corner_data = (struct fuse_corner_data[]){
+			/* fuse corner 0 */
+			{
+				.ref_uV = 1224000,
+				.max_uV = 1224000,
+				.min_uV = 1048000,
+				.max_volt_scale = 0,
+				.max_quot_scale = 0,
+				.quot_offset = 0,
+				.quot_scale = 1,
+				.quot_adjust = 0,
+				.quot_offset_scale = 5,
+				.quot_offset_adjust = 0,
+			},
+			/* fuse corner 1 */
+			{
+				.ref_uV = 1288000,
+				.max_uV = 1288000,
+				.min_uV = 1048000,
+				.max_volt_scale = 2000,
+				.max_quot_scale = 1400,
+				.quot_offset = 0,
+				.quot_scale = 1,
+				.quot_adjust = -20,
+				.quot_offset_scale = 5,
+				.quot_offset_adjust = 0,
+			},
+			/* fuse corner 2 */
+			{
+				.ref_uV = 1352000,
+				.max_uV = 1384000,
+				.min_uV = 1088000,
+				.max_volt_scale = 2000,
+				.max_quot_scale = 1400,
+				.quot_offset = 0,
+				.quot_scale = 1,
+				.quot_adjust = 0,
+				.quot_offset_scale = 5,
+				.quot_offset_adjust = 0,
+			},
+		},
+	},
+};
+
+static const struct acc_desc qcs404_acc_desc = {
+	.settings = (struct reg_sequence[]){
+		{ 0xb120, 0x1041040 },
+		{ 0xb124, 0x41 },
+		{ 0xb120, 0x0 },
+		{ 0xb124, 0x0 },
+		{ 0xb120, 0x0 },
+		{ 0xb124, 0x0 },
+	},
+	.config = (struct reg_sequence[]){
+		{ 0xb138, 0xff },
+		{ 0xb130, 0x5555 },
+	},
+	.num_regs_per_fuse = 2,
+};
+
+static const struct cpr_acc_desc qcs404_cpr_acc_desc = {
+	.cpr_desc = &qcs404_cpr_desc,
+	.acc_desc = &qcs404_acc_desc,
+};
+
+static unsigned int cpr_get_performance_state(struct generic_pm_domain *genpd,
+					      struct dev_pm_opp *opp)
+{
+	return dev_pm_opp_get_level(opp);
+}
+
+static int cpr_power_off(struct generic_pm_domain *domain)
+{
+	struct cpr_drv *drv = container_of(domain, struct cpr_drv, pd);
+
+	return cpr_disable(drv);
+}
+
+static int cpr_power_on(struct generic_pm_domain *domain)
+{
+	struct cpr_drv *drv = container_of(domain, struct cpr_drv, pd);
+
+	return cpr_enable(drv);
+}
+
+static int cpr_pd_attach_dev(struct generic_pm_domain *domain,
+			     struct device *dev)
+{
+	struct cpr_drv *drv = container_of(domain, struct cpr_drv, pd);
+	const struct acc_desc *acc_desc = drv->acc_desc;
+	int ret = 0;
+
+	mutex_lock(&drv->lock);
+
+	dev_dbg(drv->dev, "attach callback for: %s\n", dev_name(dev));
+
+	/*
+	 * This driver only supports scaling voltage for a CPU cluster
+	 * where all CPUs in the cluster share a single regulator.
+	 * Therefore, save the struct device pointer only for the first
+	 * CPU device that gets attached. There is no need to do any
+	 * additional initialization when further CPUs get attached.
+	 */
+	if (drv->attached_cpu_dev)
+		goto unlock;
+
+	/*
+	 * cpr_scale_voltage() requires the direction (if we are changing
+	 * to a higher or lower OPP). The first time
+	 * cpr_set_performance_state() is called, there is no previous
+	 * performance state defined. Therefore, we call
+	 * cpr_find_initial_corner() that gets the CPU clock frequency
+	 * set by the bootloader, so that we can determine the direction
+	 * the first time cpr_set_performance_state() is called.
+	 */
+	drv->cpu_clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(drv->cpu_clk)) {
+		ret = PTR_ERR(drv->cpu_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(drv->dev, "could not get cpu clk: %d\n", ret);
+		goto unlock;
+	}
+	drv->attached_cpu_dev = dev;
+
+	dev_dbg(drv->dev, "using cpu clk from: %s\n",
+		dev_name(drv->attached_cpu_dev));
+
+	/*
+	 * Everything related to (virtual) corners has to be initialized
+	 * here, when attaching to the power domain, since we need to know
+	 * the maximum frequency for each fuse corner, and this is only
+	 * available after the cpufreq driver has attached to us.
+	 * The reason for this is that we need to know the highest
+	 * frequency associated with each fuse corner.
+	 */
+	ret = dev_pm_opp_get_opp_count(&drv->pd.dev);
+	if (ret < 0) {
+		dev_err(drv->dev, "could not get OPP count\n");
+		goto unlock;
+	}
+	drv->num_corners = ret;
+
+	if (drv->num_corners < 2) {
+		dev_err(drv->dev, "need at least 2 OPPs to use CPR\n");
+		ret = -EINVAL;
+		goto unlock;
+	}
+
+	drv->corners = devm_kcalloc(drv->dev, drv->num_corners,
+				    sizeof(*drv->corners),
+				    GFP_KERNEL);
+	if (!drv->corners) {
+		ret = -ENOMEM;
+		goto unlock;
+	}
+
+	ret = cpr_corner_init(drv);
+	if (ret)
+		goto unlock;
+
+	cpr_set_loop_allowed(drv);
+
+	ret = cpr_init_parameters(drv);
+	if (ret)
+		goto unlock;
+
+	/* Configure CPR HW but keep it disabled */
+	ret = cpr_config(drv);
+	if (ret)
+		goto unlock;
+
+	ret = cpr_find_initial_corner(drv);
+	if (ret)
+		goto unlock;
+
+	if (acc_desc->config)
+		regmap_multi_reg_write(drv->tcsr, acc_desc->config,
+				       acc_desc->num_regs_per_fuse);
+
+	/* Enable ACC if required */
+	if (acc_desc->enable_mask)
+		regmap_update_bits(drv->tcsr, acc_desc->enable_reg,
+				   acc_desc->enable_mask,
+				   acc_desc->enable_mask);
+
+	dev_info(drv->dev, "driver initialized with %u OPPs\n",
+		 drv->num_corners);
+
+unlock:
+	mutex_unlock(&drv->lock);
+
+	return ret;
+}
+
+static int cpr_debug_info_show(struct seq_file *s, void *unused)
+{
+	u32 gcnt, ro_sel, ctl, irq_status, reg, error_steps;
+	u32 step_dn, step_up, error, error_lt0, busy;
+	struct cpr_drv *drv = s->private;
+	struct fuse_corner *fuse_corner;
+	struct corner *corner;
+
+	corner = drv->corner;
+	fuse_corner = corner->fuse_corner;
+
+	seq_printf(s, "corner, current_volt = %d uV\n",
+		       corner->last_uV);
+
+	ro_sel = fuse_corner->ring_osc_idx;
+	gcnt = cpr_read(drv, REG_RBCPR_GCNT_TARGET(ro_sel));
+	seq_printf(s, "rbcpr_gcnt_target (%u) = %#02X\n", ro_sel, gcnt);
+
+	ctl = cpr_read(drv, REG_RBCPR_CTL);
+	seq_printf(s, "rbcpr_ctl = %#02X\n", ctl);
+
+	irq_status = cpr_read(drv, REG_RBIF_IRQ_STATUS);
+	seq_printf(s, "rbcpr_irq_status = %#02X\n", irq_status);
+
+	reg = cpr_read(drv, REG_RBCPR_RESULT_0);
+	seq_printf(s, "rbcpr_result_0 = %#02X\n", reg);
+
+	step_dn = reg & 0x01;
+	step_up = (reg >> RBCPR_RESULT0_STEP_UP_SHIFT) & 0x01;
+	seq_printf(s, "  [step_dn = %u", step_dn);
+
+	seq_printf(s, ", step_up = %u", step_up);
+
+	error_steps = (reg >> RBCPR_RESULT0_ERROR_STEPS_SHIFT)
+				& RBCPR_RESULT0_ERROR_STEPS_MASK;
+	seq_printf(s, ", error_steps = %u", error_steps);
+
+	error = (reg >> RBCPR_RESULT0_ERROR_SHIFT) & RBCPR_RESULT0_ERROR_MASK;
+	seq_printf(s, ", error = %u", error);
+
+	error_lt0 = (reg >> RBCPR_RESULT0_ERROR_LT0_SHIFT) & 0x01;
+	seq_printf(s, ", error_lt_0 = %u", error_lt0);
+
+	busy = (reg >> RBCPR_RESULT0_BUSY_SHIFT) & 0x01;
+	seq_printf(s, ", busy = %u]\n", busy);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(cpr_debug_info);
+
+static void cpr_debugfs_init(struct cpr_drv *drv)
+{
+	drv->debugfs = debugfs_create_dir("qcom_cpr", NULL);
+
+	debugfs_create_file("debug_info", 0444, drv->debugfs,
+			    drv, &cpr_debug_info_fops);
+}
+
+static int cpr_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct cpr_drv *drv;
+	int irq, ret;
+	const struct cpr_acc_desc *data;
+	struct device_node *np;
+	u32 cpr_rev = FUSE_REVISION_UNKNOWN;
+
+	data = of_device_get_match_data(dev);
+	if (!data || !data->cpr_desc || !data->acc_desc)
+		return -EINVAL;
+
+	drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
+	if (!drv)
+		return -ENOMEM;
+	drv->dev = dev;
+	drv->desc = data->cpr_desc;
+	drv->acc_desc = data->acc_desc;
+
+	drv->fuse_corners = devm_kcalloc(dev, drv->desc->num_fuse_corners,
+					 sizeof(*drv->fuse_corners),
+					 GFP_KERNEL);
+	if (!drv->fuse_corners)
+		return -ENOMEM;
+
+	np = of_parse_phandle(dev->of_node, "acc-syscon", 0);
+	if (!np)
+		return -ENODEV;
+
+	drv->tcsr = syscon_node_to_regmap(np);
+	of_node_put(np);
+	if (IS_ERR(drv->tcsr))
+		return PTR_ERR(drv->tcsr);
+
+	drv->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(drv->base))
+		return PTR_ERR(drv->base);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return -EINVAL;
+
+	drv->vdd_apc = devm_regulator_get(dev, "vdd-apc");
+	if (IS_ERR(drv->vdd_apc))
+		return PTR_ERR(drv->vdd_apc);
+
+	/*
+	 * Initialize fuse corners, since it simply depends
+	 * on data in efuses.
+	 * Everything related to (virtual) corners has to be
+	 * initialized after attaching to the power domain,
+	 * since it depends on the CPU's OPP table.
+	 */
+	ret = nvmem_cell_read_variable_le_u32(dev, "cpr_fuse_revision", &cpr_rev);
+	if (ret)
+		return ret;
+
+	drv->cpr_fuses = cpr_get_fuses(drv);
+	if (IS_ERR(drv->cpr_fuses))
+		return PTR_ERR(drv->cpr_fuses);
+
+	ret = cpr_populate_ring_osc_idx(drv);
+	if (ret)
+		return ret;
+
+	ret = cpr_fuse_corner_init(drv);
+	if (ret)
+		return ret;
+
+	mutex_init(&drv->lock);
+
+	ret = devm_request_threaded_irq(dev, irq, NULL,
+					cpr_irq_handler,
+					IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+					"cpr", drv);
+	if (ret)
+		return ret;
+
+	drv->pd.name = devm_kstrdup_const(dev, dev->of_node->full_name,
+					  GFP_KERNEL);
+	if (!drv->pd.name)
+		return -EINVAL;
+
+	drv->pd.power_off = cpr_power_off;
+	drv->pd.power_on = cpr_power_on;
+	drv->pd.set_performance_state = cpr_set_performance_state;
+	drv->pd.opp_to_performance_state = cpr_get_performance_state;
+	drv->pd.attach_dev = cpr_pd_attach_dev;
+
+	ret = pm_genpd_init(&drv->pd, NULL, true);
+	if (ret)
+		return ret;
+
+	ret = of_genpd_add_provider_simple(dev->of_node, &drv->pd);
+	if (ret)
+		goto err_remove_genpd;
+
+	platform_set_drvdata(pdev, drv);
+	cpr_debugfs_init(drv);
+
+	return 0;
+
+err_remove_genpd:
+	pm_genpd_remove(&drv->pd);
+	return ret;
+}
+
+static int cpr_remove(struct platform_device *pdev)
+{
+	struct cpr_drv *drv = platform_get_drvdata(pdev);
+
+	if (cpr_is_allowed(drv)) {
+		cpr_ctl_disable(drv);
+		cpr_irq_set(drv, 0);
+	}
+
+	of_genpd_del_provider(pdev->dev.of_node);
+	pm_genpd_remove(&drv->pd);
+
+	debugfs_remove_recursive(drv->debugfs);
+
+	return 0;
+}
+
+static const struct of_device_id cpr_match_table[] = {
+	{ .compatible = "qcom,qcs404-cpr", .data = &qcs404_cpr_acc_desc },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, cpr_match_table);
+
+static struct platform_driver cpr_driver = {
+	.probe		= cpr_probe,
+	.remove		= cpr_remove,
+	.driver		= {
+		.name	= "qcom-cpr",
+		.of_match_table = cpr_match_table,
+	},
+};
+module_platform_driver(cpr_driver);
+
+MODULE_DESCRIPTION("Core Power Reduction (CPR) driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pmdomain/qcom/rpmhpd.c b/drivers/pmdomain/qcom/rpmhpd.c
new file mode 100644
index 000000000000..a87e336d5e33
--- /dev/null
+++ b/drivers/pmdomain/qcom/rpmhpd.c
@@ -0,0 +1,886 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm_domain.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <soc/qcom/cmd-db.h>
+#include <soc/qcom/rpmh.h>
+#include <dt-bindings/power/qcom-rpmpd.h>
+#include <dt-bindings/power/qcom,rpmhpd.h>
+
+#define domain_to_rpmhpd(domain) container_of(domain, struct rpmhpd, pd)
+
+#define RPMH_ARC_MAX_LEVELS	16
+
+/**
+ * struct rpmhpd - top level RPMh power domain resource data structure
+ * @dev:		rpmh power domain controller device
+ * @pd:			generic_pm_domain corresponding to the power domain
+ * @parent:		generic_pm_domain corresponding to the parent's power domain
+ * @peer:		A peer power domain in case Active only Voting is
+ *			supported
+ * @active_only:	True if it represents an Active only peer
+ * @corner:		current corner
+ * @active_corner:	current active corner
+ * @enable_corner:	lowest non-zero corner
+ * @level:		An array of level (vlvl) to corner (hlvl) mappings
+ *			derived from cmd-db
+ * @level_count:	Number of levels supported by the power domain. max
+ *			being 16 (0 - 15)
+ * @enabled:		true if the power domain is enabled
+ * @res_name:		Resource name used for cmd-db lookup
+ * @addr:		Resource address as looped up using resource name from
+ *			cmd-db
+ * @state_synced:	Indicator that sync_state has been invoked for the rpmhpd resource
+ */
+struct rpmhpd {
+	struct device	*dev;
+	struct generic_pm_domain pd;
+	struct generic_pm_domain *parent;
+	struct rpmhpd	*peer;
+	const bool	active_only;
+	unsigned int	corner;
+	unsigned int	active_corner;
+	unsigned int	enable_corner;
+	u32		level[RPMH_ARC_MAX_LEVELS];
+	size_t		level_count;
+	bool		enabled;
+	const char	*res_name;
+	u32		addr;
+	bool		state_synced;
+};
+
+struct rpmhpd_desc {
+	struct rpmhpd **rpmhpds;
+	size_t num_pds;
+};
+
+static DEFINE_MUTEX(rpmhpd_lock);
+
+/* RPMH powerdomains */
+
+static struct rpmhpd cx_ao;
+static struct rpmhpd mx;
+static struct rpmhpd mx_ao;
+static struct rpmhpd cx = {
+	.pd = { .name = "cx", },
+	.peer = &cx_ao,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao = {
+	.pd = { .name = "cx_ao", },
+	.active_only = true,
+	.peer = &cx,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao_w_mx_parent;
+static struct rpmhpd cx_w_mx_parent = {
+	.pd = { .name = "cx", },
+	.peer = &cx_ao_w_mx_parent,
+	.parent = &mx.pd,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao_w_mx_parent = {
+	.pd = { .name = "cx_ao", },
+	.active_only = true,
+	.peer = &cx_w_mx_parent,
+	.parent = &mx_ao.pd,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd ebi = {
+	.pd = { .name = "ebi", },
+	.res_name = "ebi.lvl",
+};
+
+static struct rpmhpd gfx = {
+	.pd = { .name = "gfx", },
+	.res_name = "gfx.lvl",
+};
+
+static struct rpmhpd lcx = {
+	.pd = { .name = "lcx", },
+	.res_name = "lcx.lvl",
+};
+
+static struct rpmhpd lmx = {
+	.pd = { .name = "lmx", },
+	.res_name = "lmx.lvl",
+};
+
+static struct rpmhpd mmcx_ao;
+static struct rpmhpd mmcx = {
+	.pd = { .name = "mmcx", },
+	.peer = &mmcx_ao,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao = {
+	.pd = { .name = "mmcx_ao", },
+	.active_only = true,
+	.peer = &mmcx,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao_w_cx_parent;
+static struct rpmhpd mmcx_w_cx_parent = {
+	.pd = { .name = "mmcx", },
+	.peer = &mmcx_ao_w_cx_parent,
+	.parent = &cx.pd,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao_w_cx_parent = {
+	.pd = { .name = "mmcx_ao", },
+	.active_only = true,
+	.peer = &mmcx_w_cx_parent,
+	.parent = &cx_ao.pd,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mss = {
+	.pd = { .name = "mss", },
+	.res_name = "mss.lvl",
+};
+
+static struct rpmhpd mx_ao;
+static struct rpmhpd mx = {
+	.pd = { .name = "mx", },
+	.peer = &mx_ao,
+	.res_name = "mx.lvl",
+};
+
+static struct rpmhpd mx_ao = {
+	.pd = { .name = "mx_ao", },
+	.active_only = true,
+	.peer = &mx,
+	.res_name = "mx.lvl",
+};
+
+static struct rpmhpd mxc_ao;
+static struct rpmhpd mxc = {
+	.pd = { .name = "mxc", },
+	.peer = &mxc_ao,
+	.res_name = "mxc.lvl",
+};
+
+static struct rpmhpd mxc_ao = {
+	.pd = { .name = "mxc_ao", },
+	.active_only = true,
+	.peer = &mxc,
+	.res_name = "mxc.lvl",
+};
+
+static struct rpmhpd nsp = {
+	.pd = { .name = "nsp", },
+	.res_name = "nsp.lvl",
+};
+
+static struct rpmhpd nsp0 = {
+	.pd = { .name = "nsp0", },
+	.res_name = "nsp0.lvl",
+};
+
+static struct rpmhpd nsp1 = {
+	.pd = { .name = "nsp1", },
+	.res_name = "nsp1.lvl",
+};
+
+static struct rpmhpd qphy = {
+	.pd = { .name = "qphy", },
+	.res_name = "qphy.lvl",
+};
+
+/* SA8540P RPMH powerdomains */
+static struct rpmhpd *sa8540p_rpmhpds[] = {
+	[SC8280XP_CX] = &cx,
+	[SC8280XP_CX_AO] = &cx_ao,
+	[SC8280XP_EBI] = &ebi,
+	[SC8280XP_GFX] = &gfx,
+	[SC8280XP_LCX] = &lcx,
+	[SC8280XP_LMX] = &lmx,
+	[SC8280XP_MMCX] = &mmcx,
+	[SC8280XP_MMCX_AO] = &mmcx_ao,
+	[SC8280XP_MX] = &mx,
+	[SC8280XP_MX_AO] = &mx_ao,
+	[SC8280XP_NSP] = &nsp,
+};
+
+static const struct rpmhpd_desc sa8540p_desc = {
+	.rpmhpds = sa8540p_rpmhpds,
+	.num_pds = ARRAY_SIZE(sa8540p_rpmhpds),
+};
+
+/* SA8775P RPMH power domains */
+static struct rpmhpd *sa8775p_rpmhpds[] = {
+	[SA8775P_CX] = &cx,
+	[SA8775P_CX_AO] = &cx_ao,
+	[SA8775P_EBI] = &ebi,
+	[SA8775P_GFX] = &gfx,
+	[SA8775P_LCX] = &lcx,
+	[SA8775P_LMX] = &lmx,
+	[SA8775P_MMCX] = &mmcx,
+	[SA8775P_MMCX_AO] = &mmcx_ao,
+	[SA8775P_MXC] = &mxc,
+	[SA8775P_MXC_AO] = &mxc_ao,
+	[SA8775P_MX] = &mx,
+	[SA8775P_MX_AO] = &mx_ao,
+	[SA8775P_NSP0] = &nsp0,
+	[SA8775P_NSP1] = &nsp1,
+};
+
+static const struct rpmhpd_desc sa8775p_desc = {
+	.rpmhpds = sa8775p_rpmhpds,
+	.num_pds = ARRAY_SIZE(sa8775p_rpmhpds),
+};
+
+/* SDM670 RPMH powerdomains */
+static struct rpmhpd *sdm670_rpmhpds[] = {
+	[SDM670_CX] = &cx_w_mx_parent,
+	[SDM670_CX_AO] = &cx_ao_w_mx_parent,
+	[SDM670_GFX] = &gfx,
+	[SDM670_LCX] = &lcx,
+	[SDM670_LMX] = &lmx,
+	[SDM670_MSS] = &mss,
+	[SDM670_MX] = &mx,
+	[SDM670_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sdm670_desc = {
+	.rpmhpds = sdm670_rpmhpds,
+	.num_pds = ARRAY_SIZE(sdm670_rpmhpds),
+};
+
+/* SDM845 RPMH powerdomains */
+static struct rpmhpd *sdm845_rpmhpds[] = {
+	[SDM845_CX] = &cx_w_mx_parent,
+	[SDM845_CX_AO] = &cx_ao_w_mx_parent,
+	[SDM845_EBI] = &ebi,
+	[SDM845_GFX] = &gfx,
+	[SDM845_LCX] = &lcx,
+	[SDM845_LMX] = &lmx,
+	[SDM845_MSS] = &mss,
+	[SDM845_MX] = &mx,
+	[SDM845_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sdm845_desc = {
+	.rpmhpds = sdm845_rpmhpds,
+	.num_pds = ARRAY_SIZE(sdm845_rpmhpds),
+};
+
+/* SDX55 RPMH powerdomains */
+static struct rpmhpd *sdx55_rpmhpds[] = {
+	[SDX55_CX] = &cx_w_mx_parent,
+	[SDX55_MSS] = &mss,
+	[SDX55_MX] = &mx,
+};
+
+static const struct rpmhpd_desc sdx55_desc = {
+	.rpmhpds = sdx55_rpmhpds,
+	.num_pds = ARRAY_SIZE(sdx55_rpmhpds),
+};
+
+/* SDX65 RPMH powerdomains */
+static struct rpmhpd *sdx65_rpmhpds[] = {
+	[SDX65_CX] = &cx_w_mx_parent,
+	[SDX65_CX_AO] = &cx_ao_w_mx_parent,
+	[SDX65_MSS] = &mss,
+	[SDX65_MX] = &mx,
+	[SDX65_MX_AO] = &mx_ao,
+	[SDX65_MXC] = &mxc,
+};
+
+static const struct rpmhpd_desc sdx65_desc = {
+	.rpmhpds = sdx65_rpmhpds,
+	.num_pds = ARRAY_SIZE(sdx65_rpmhpds),
+};
+
+/* SDX75 RPMH powerdomains */
+static struct rpmhpd *sdx75_rpmhpds[] = {
+	[RPMHPD_CX] = &cx,
+	[RPMHPD_CX_AO] = &cx_ao,
+	[RPMHPD_MSS] = &mss,
+	[RPMHPD_MX] = &mx,
+	[RPMHPD_MX_AO] = &mx_ao,
+	[RPMHPD_MXC] = &mxc,
+};
+
+static const struct rpmhpd_desc sdx75_desc = {
+	.rpmhpds = sdx75_rpmhpds,
+	.num_pds = ARRAY_SIZE(sdx75_rpmhpds),
+};
+
+/* SM6350 RPMH powerdomains */
+static struct rpmhpd *sm6350_rpmhpds[] = {
+	[SM6350_CX] = &cx_w_mx_parent,
+	[SM6350_GFX] = &gfx,
+	[SM6350_LCX] = &lcx,
+	[SM6350_LMX] = &lmx,
+	[SM6350_MSS] = &mss,
+	[SM6350_MX] = &mx,
+};
+
+static const struct rpmhpd_desc sm6350_desc = {
+	.rpmhpds = sm6350_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm6350_rpmhpds),
+};
+
+/* SM8150 RPMH powerdomains */
+static struct rpmhpd *sm8150_rpmhpds[] = {
+	[SM8150_CX] = &cx_w_mx_parent,
+	[SM8150_CX_AO] = &cx_ao_w_mx_parent,
+	[SM8150_EBI] = &ebi,
+	[SM8150_GFX] = &gfx,
+	[SM8150_LCX] = &lcx,
+	[SM8150_LMX] = &lmx,
+	[SM8150_MMCX] = &mmcx,
+	[SM8150_MMCX_AO] = &mmcx_ao,
+	[SM8150_MSS] = &mss,
+	[SM8150_MX] = &mx,
+	[SM8150_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sm8150_desc = {
+	.rpmhpds = sm8150_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
+};
+
+static struct rpmhpd *sa8155p_rpmhpds[] = {
+	[SA8155P_CX] = &cx_w_mx_parent,
+	[SA8155P_CX_AO] = &cx_ao_w_mx_parent,
+	[SA8155P_EBI] = &ebi,
+	[SA8155P_GFX] = &gfx,
+	[SA8155P_MSS] = &mss,
+	[SA8155P_MX] = &mx,
+	[SA8155P_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sa8155p_desc = {
+	.rpmhpds = sa8155p_rpmhpds,
+	.num_pds = ARRAY_SIZE(sa8155p_rpmhpds),
+};
+
+/* SM8250 RPMH powerdomains */
+static struct rpmhpd *sm8250_rpmhpds[] = {
+	[RPMHPD_CX] = &cx_w_mx_parent,
+	[RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
+	[RPMHPD_EBI] = &ebi,
+	[RPMHPD_GFX] = &gfx,
+	[RPMHPD_LCX] = &lcx,
+	[RPMHPD_LMX] = &lmx,
+	[RPMHPD_MMCX] = &mmcx,
+	[RPMHPD_MMCX_AO] = &mmcx_ao,
+	[RPMHPD_MX] = &mx,
+	[RPMHPD_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sm8250_desc = {
+	.rpmhpds = sm8250_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8250_rpmhpds),
+};
+
+/* SM8350 Power domains */
+static struct rpmhpd *sm8350_rpmhpds[] = {
+	[RPMHPD_CX] = &cx_w_mx_parent,
+	[RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
+	[RPMHPD_EBI] = &ebi,
+	[RPMHPD_GFX] = &gfx,
+	[RPMHPD_LCX] = &lcx,
+	[RPMHPD_LMX] = &lmx,
+	[RPMHPD_MMCX] = &mmcx,
+	[RPMHPD_MMCX_AO] = &mmcx_ao,
+	[RPMHPD_MSS] = &mss,
+	[RPMHPD_MX] = &mx,
+	[RPMHPD_MX_AO] = &mx_ao,
+	[RPMHPD_MXC] = &mxc,
+	[RPMHPD_MXC_AO] = &mxc_ao,
+};
+
+static const struct rpmhpd_desc sm8350_desc = {
+	.rpmhpds = sm8350_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8350_rpmhpds),
+};
+
+/* SM8450 RPMH powerdomains */
+static struct rpmhpd *sm8450_rpmhpds[] = {
+	[RPMHPD_CX] = &cx,
+	[RPMHPD_CX_AO] = &cx_ao,
+	[RPMHPD_EBI] = &ebi,
+	[RPMHPD_GFX] = &gfx,
+	[RPMHPD_LCX] = &lcx,
+	[RPMHPD_LMX] = &lmx,
+	[RPMHPD_MMCX] = &mmcx_w_cx_parent,
+	[RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
+	[RPMHPD_MSS] = &mss,
+	[RPMHPD_MX] = &mx,
+	[RPMHPD_MX_AO] = &mx_ao,
+	[RPMHPD_MXC] = &mxc,
+	[RPMHPD_MXC_AO] = &mxc_ao,
+};
+
+static const struct rpmhpd_desc sm8450_desc = {
+	.rpmhpds = sm8450_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8450_rpmhpds),
+};
+
+/* SM8550 RPMH powerdomains */
+static struct rpmhpd *sm8550_rpmhpds[] = {
+	[RPMHPD_CX] = &cx,
+	[RPMHPD_CX_AO] = &cx_ao,
+	[RPMHPD_EBI] = &ebi,
+	[RPMHPD_GFX] = &gfx,
+	[RPMHPD_LCX] = &lcx,
+	[RPMHPD_LMX] = &lmx,
+	[RPMHPD_MMCX] = &mmcx_w_cx_parent,
+	[RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
+	[RPMHPD_MSS] = &mss,
+	[RPMHPD_MX] = &mx,
+	[RPMHPD_MX_AO] = &mx_ao,
+	[RPMHPD_MXC] = &mxc,
+	[RPMHPD_MXC_AO] = &mxc_ao,
+	[RPMHPD_NSP] = &nsp,
+};
+
+static const struct rpmhpd_desc sm8550_desc = {
+	.rpmhpds = sm8550_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8550_rpmhpds),
+};
+
+/* QDU1000/QRU1000 RPMH powerdomains */
+static struct rpmhpd *qdu1000_rpmhpds[] = {
+	[QDU1000_CX] = &cx,
+	[QDU1000_EBI] = &ebi,
+	[QDU1000_MSS] = &mss,
+	[QDU1000_MX] = &mx,
+};
+
+static const struct rpmhpd_desc qdu1000_desc = {
+	.rpmhpds = qdu1000_rpmhpds,
+	.num_pds = ARRAY_SIZE(qdu1000_rpmhpds),
+};
+
+/* SC7180 RPMH powerdomains */
+static struct rpmhpd *sc7180_rpmhpds[] = {
+	[SC7180_CX] = &cx_w_mx_parent,
+	[SC7180_CX_AO] = &cx_ao_w_mx_parent,
+	[SC7180_GFX] = &gfx,
+	[SC7180_LCX] = &lcx,
+	[SC7180_LMX] = &lmx,
+	[SC7180_MSS] = &mss,
+	[SC7180_MX] = &mx,
+	[SC7180_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sc7180_desc = {
+	.rpmhpds = sc7180_rpmhpds,
+	.num_pds = ARRAY_SIZE(sc7180_rpmhpds),
+};
+
+/* SC7280 RPMH powerdomains */
+static struct rpmhpd *sc7280_rpmhpds[] = {
+	[SC7280_CX] = &cx,
+	[SC7280_CX_AO] = &cx_ao,
+	[SC7280_EBI] = &ebi,
+	[SC7280_GFX] = &gfx,
+	[SC7280_LCX] = &lcx,
+	[SC7280_LMX] = &lmx,
+	[SC7280_MSS] = &mss,
+	[SC7280_MX] = &mx,
+	[SC7280_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sc7280_desc = {
+	.rpmhpds = sc7280_rpmhpds,
+	.num_pds = ARRAY_SIZE(sc7280_rpmhpds),
+};
+
+/* SC8180x RPMH powerdomains */
+static struct rpmhpd *sc8180x_rpmhpds[] = {
+	[SC8180X_CX] = &cx_w_mx_parent,
+	[SC8180X_CX_AO] = &cx_ao_w_mx_parent,
+	[SC8180X_EBI] = &ebi,
+	[SC8180X_GFX] = &gfx,
+	[SC8180X_LCX] = &lcx,
+	[SC8180X_LMX] = &lmx,
+	[SC8180X_MMCX] = &mmcx,
+	[SC8180X_MMCX_AO] = &mmcx_ao,
+	[SC8180X_MSS] = &mss,
+	[SC8180X_MX] = &mx,
+	[SC8180X_MX_AO] = &mx_ao,
+};
+
+static const struct rpmhpd_desc sc8180x_desc = {
+	.rpmhpds = sc8180x_rpmhpds,
+	.num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
+};
+
+/* SC8280xp RPMH powerdomains */
+static struct rpmhpd *sc8280xp_rpmhpds[] = {
+	[SC8280XP_CX] = &cx,
+	[SC8280XP_CX_AO] = &cx_ao,
+	[SC8280XP_EBI] = &ebi,
+	[SC8280XP_GFX] = &gfx,
+	[SC8280XP_LCX] = &lcx,
+	[SC8280XP_LMX] = &lmx,
+	[SC8280XP_MMCX] = &mmcx,
+	[SC8280XP_MMCX_AO] = &mmcx_ao,
+	[SC8280XP_MX] = &mx,
+	[SC8280XP_MX_AO] = &mx_ao,
+	[SC8280XP_NSP] = &nsp,
+	[SC8280XP_QPHY] = &qphy,
+};
+
+static const struct rpmhpd_desc sc8280xp_desc = {
+	.rpmhpds = sc8280xp_rpmhpds,
+	.num_pds = ARRAY_SIZE(sc8280xp_rpmhpds),
+};
+
+static const struct of_device_id rpmhpd_match_table[] = {
+	{ .compatible = "qcom,qdu1000-rpmhpd", .data = &qdu1000_desc },
+	{ .compatible = "qcom,sa8155p-rpmhpd", .data = &sa8155p_desc },
+	{ .compatible = "qcom,sa8540p-rpmhpd", .data = &sa8540p_desc },
+	{ .compatible = "qcom,sa8775p-rpmhpd", .data = &sa8775p_desc },
+	{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
+	{ .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
+	{ .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
+	{ .compatible = "qcom,sc8280xp-rpmhpd", .data = &sc8280xp_desc },
+	{ .compatible = "qcom,sdm670-rpmhpd", .data = &sdm670_desc },
+	{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
+	{ .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
+	{ .compatible = "qcom,sdx65-rpmhpd", .data = &sdx65_desc},
+	{ .compatible = "qcom,sdx75-rpmhpd", .data = &sdx75_desc},
+	{ .compatible = "qcom,sm6350-rpmhpd", .data = &sm6350_desc },
+	{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
+	{ .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
+	{ .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
+	{ .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
+	{ .compatible = "qcom,sm8550-rpmhpd", .data = &sm8550_desc },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rpmhpd_match_table);
+
+static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
+			      unsigned int corner, bool sync)
+{
+	struct tcs_cmd cmd = {
+		.addr = pd->addr,
+		.data = corner,
+	};
+
+	/*
+	 * Wait for an ack only when we are increasing the
+	 * perf state of the power domain
+	 */
+	if (sync)
+		return rpmh_write(pd->dev, state, &cmd, 1);
+	else
+		return rpmh_write_async(pd->dev, state, &cmd, 1);
+}
+
+static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
+			    unsigned int *active, unsigned int *sleep)
+{
+	*active = corner;
+
+	if (pd->active_only)
+		*sleep = 0;
+	else
+		*sleep = *active;
+}
+
+/*
+ * This function is used to aggregate the votes across the active only
+ * resources and its peers. The aggregated votes are sent to RPMh as
+ * ACTIVE_ONLY votes (which take effect immediately), as WAKE_ONLY votes
+ * (applied by RPMh on system wakeup) and as SLEEP votes (applied by RPMh
+ * on system sleep).
+ * We send ACTIVE_ONLY votes for resources without any peers. For others,
+ * which have an active only peer, all 3 votes are sent.
+ */
+static int rpmhpd_aggregate_corner(struct rpmhpd *pd, unsigned int corner)
+{
+	int ret;
+	struct rpmhpd *peer = pd->peer;
+	unsigned int active_corner, sleep_corner;
+	unsigned int this_active_corner = 0, this_sleep_corner = 0;
+	unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
+
+	if (pd->state_synced) {
+		to_active_sleep(pd, corner, &this_active_corner, &this_sleep_corner);
+	} else {
+		/* Clamp to highest corner if sync_state hasn't happened */
+		this_active_corner = pd->level_count - 1;
+		this_sleep_corner = pd->level_count - 1;
+	}
+
+	if (peer && peer->enabled)
+		to_active_sleep(peer, peer->corner, &peer_active_corner,
+				&peer_sleep_corner);
+
+	active_corner = max(this_active_corner, peer_active_corner);
+
+	ret = rpmhpd_send_corner(pd, RPMH_ACTIVE_ONLY_STATE, active_corner,
+				 active_corner > pd->active_corner);
+	if (ret)
+		return ret;
+
+	pd->active_corner = active_corner;
+
+	if (peer) {
+		peer->active_corner = active_corner;
+
+		ret = rpmhpd_send_corner(pd, RPMH_WAKE_ONLY_STATE,
+					 active_corner, false);
+		if (ret)
+			return ret;
+
+		sleep_corner = max(this_sleep_corner, peer_sleep_corner);
+
+		return rpmhpd_send_corner(pd, RPMH_SLEEP_STATE, sleep_corner,
+					  false);
+	}
+
+	return ret;
+}
+
+static int rpmhpd_power_on(struct generic_pm_domain *domain)
+{
+	struct rpmhpd *pd = domain_to_rpmhpd(domain);
+	unsigned int corner;
+	int ret;
+
+	mutex_lock(&rpmhpd_lock);
+
+	corner = max(pd->corner, pd->enable_corner);
+	ret = rpmhpd_aggregate_corner(pd, corner);
+	if (!ret)
+		pd->enabled = true;
+
+	mutex_unlock(&rpmhpd_lock);
+
+	return ret;
+}
+
+static int rpmhpd_power_off(struct generic_pm_domain *domain)
+{
+	struct rpmhpd *pd = domain_to_rpmhpd(domain);
+	int ret;
+
+	mutex_lock(&rpmhpd_lock);
+
+	ret = rpmhpd_aggregate_corner(pd, 0);
+	if (!ret)
+		pd->enabled = false;
+
+	mutex_unlock(&rpmhpd_lock);
+
+	return ret;
+}
+
+static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
+					unsigned int level)
+{
+	struct rpmhpd *pd = domain_to_rpmhpd(domain);
+	int ret = 0, i;
+
+	mutex_lock(&rpmhpd_lock);
+
+	for (i = 0; i < pd->level_count; i++)
+		if (level <= pd->level[i])
+			break;
+
+	/*
+	 * If the level requested is more than that supported by the
+	 * max corner, just set it to max anyway.
+	 */
+	if (i == pd->level_count)
+		i--;
+
+	if (pd->enabled) {
+		/* Ensure that the domain isn't turn off */
+		if (i < pd->enable_corner)
+			i = pd->enable_corner;
+
+		ret = rpmhpd_aggregate_corner(pd, i);
+		if (ret)
+			goto out;
+	}
+
+	pd->corner = i;
+out:
+	mutex_unlock(&rpmhpd_lock);
+
+	return ret;
+}
+
+static unsigned int rpmhpd_get_performance_state(struct generic_pm_domain *genpd,
+						 struct dev_pm_opp *opp)
+{
+	return dev_pm_opp_get_level(opp);
+}
+
+static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)
+{
+	int i;
+	const u16 *buf;
+
+	buf = cmd_db_read_aux_data(rpmhpd->res_name, &rpmhpd->level_count);
+	if (IS_ERR(buf))
+		return PTR_ERR(buf);
+
+	/* 2 bytes used for each command DB aux data entry */
+	rpmhpd->level_count >>= 1;
+
+	if (rpmhpd->level_count > RPMH_ARC_MAX_LEVELS)
+		return -EINVAL;
+
+	for (i = 0; i < rpmhpd->level_count; i++) {
+		rpmhpd->level[i] = buf[i];
+
+		/* Remember the first corner with non-zero level */
+		if (!rpmhpd->level[rpmhpd->enable_corner] && rpmhpd->level[i])
+			rpmhpd->enable_corner = i;
+
+		/*
+		 * The AUX data may be zero padded.  These 0 valued entries at
+		 * the end of the map must be ignored.
+		 */
+		if (i > 0 && rpmhpd->level[i] == 0) {
+			rpmhpd->level_count = i;
+			break;
+		}
+		pr_debug("%s: ARC hlvl=%2d --> vlvl=%4u\n", rpmhpd->res_name, i,
+			 rpmhpd->level[i]);
+	}
+
+	return 0;
+}
+
+static int rpmhpd_probe(struct platform_device *pdev)
+{
+	int i, ret;
+	size_t num_pds;
+	struct device *dev = &pdev->dev;
+	struct genpd_onecell_data *data;
+	struct rpmhpd **rpmhpds;
+	const struct rpmhpd_desc *desc;
+
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -EINVAL;
+
+	rpmhpds = desc->rpmhpds;
+	num_pds = desc->num_pds;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->domains = devm_kcalloc(dev, num_pds, sizeof(*data->domains),
+				     GFP_KERNEL);
+	if (!data->domains)
+		return -ENOMEM;
+
+	data->num_domains = num_pds;
+
+	for (i = 0; i < num_pds; i++) {
+		if (!rpmhpds[i])
+			continue;
+
+		rpmhpds[i]->dev = dev;
+		rpmhpds[i]->addr = cmd_db_read_addr(rpmhpds[i]->res_name);
+		if (!rpmhpds[i]->addr) {
+			dev_err(dev, "Could not find RPMh address for resource %s\n",
+				rpmhpds[i]->res_name);
+			return -ENODEV;
+		}
+
+		ret = cmd_db_read_slave_id(rpmhpds[i]->res_name);
+		if (ret != CMD_DB_HW_ARC) {
+			dev_err(dev, "RPMh slave ID mismatch\n");
+			return -EINVAL;
+		}
+
+		ret = rpmhpd_update_level_mapping(rpmhpds[i]);
+		if (ret)
+			return ret;
+
+		rpmhpds[i]->pd.power_off = rpmhpd_power_off;
+		rpmhpds[i]->pd.power_on = rpmhpd_power_on;
+		rpmhpds[i]->pd.set_performance_state = rpmhpd_set_performance_state;
+		rpmhpds[i]->pd.opp_to_performance_state = rpmhpd_get_performance_state;
+		pm_genpd_init(&rpmhpds[i]->pd, NULL, true);
+
+		data->domains[i] = &rpmhpds[i]->pd;
+	}
+
+	/* Add subdomains */
+	for (i = 0; i < num_pds; i++) {
+		if (!rpmhpds[i])
+			continue;
+		if (rpmhpds[i]->parent)
+			pm_genpd_add_subdomain(rpmhpds[i]->parent,
+					       &rpmhpds[i]->pd);
+	}
+
+	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+}
+
+static void rpmhpd_sync_state(struct device *dev)
+{
+	const struct rpmhpd_desc *desc = of_device_get_match_data(dev);
+	struct rpmhpd **rpmhpds = desc->rpmhpds;
+	unsigned int corner;
+	struct rpmhpd *pd;
+	unsigned int i;
+	int ret;
+
+	mutex_lock(&rpmhpd_lock);
+	for (i = 0; i < desc->num_pds; i++) {
+		pd = rpmhpds[i];
+		if (!pd)
+			continue;
+
+		pd->state_synced = true;
+		if (pd->enabled)
+			corner = max(pd->corner, pd->enable_corner);
+		else
+			corner = 0;
+
+		ret = rpmhpd_aggregate_corner(pd, corner);
+		if (ret)
+			dev_err(dev, "failed to sync %s\n", pd->res_name);
+	}
+	mutex_unlock(&rpmhpd_lock);
+}
+
+static struct platform_driver rpmhpd_driver = {
+	.driver = {
+		.name = "qcom-rpmhpd",
+		.of_match_table = rpmhpd_match_table,
+		.suppress_bind_attrs = true,
+		.sync_state = rpmhpd_sync_state,
+	},
+	.probe = rpmhpd_probe,
+};
+
+static int __init rpmhpd_init(void)
+{
+	return platform_driver_register(&rpmhpd_driver);
+}
+core_initcall(rpmhpd_init);
+
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pmdomain/qcom/rpmpd.c b/drivers/pmdomain/qcom/rpmpd.c
new file mode 100644
index 000000000000..3135dd1dafe0
--- /dev/null
+++ b/drivers/pmdomain/qcom/rpmpd.c
@@ -0,0 +1,1023 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm_domain.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/soc/qcom/smd-rpm.h>
+
+#include <dt-bindings/power/qcom-rpmpd.h>
+
+#define domain_to_rpmpd(domain) container_of(domain, struct rpmpd, pd)
+
+/* Resource types:
+ * RPMPD_X is X encoded as a little-endian, lower-case, ASCII string */
+#define RPMPD_SMPA 0x61706d73
+#define RPMPD_LDOA 0x616f646c
+#define RPMPD_SMPB 0x62706d73
+#define RPMPD_LDOB 0x626f646c
+#define RPMPD_RWCX 0x78637772
+#define RPMPD_RWMX 0x786d7772
+#define RPMPD_RWLC 0x636c7772
+#define RPMPD_RWLM 0x6d6c7772
+#define RPMPD_RWSC 0x63737772
+#define RPMPD_RWSM 0x6d737772
+#define RPMPD_RWGX 0x78677772
+
+/* Operation Keys */
+#define KEY_CORNER		0x6e726f63 /* corn */
+#define KEY_ENABLE		0x6e657773 /* swen */
+#define KEY_FLOOR_CORNER	0x636676   /* vfc */
+#define KEY_FLOOR_LEVEL		0x6c6676   /* vfl */
+#define KEY_LEVEL		0x6c766c76 /* vlvl */
+
+#define MAX_CORNER_RPMPD_STATE	6
+
+struct rpmpd_req {
+	__le32 key;
+	__le32 nbytes;
+	__le32 value;
+};
+
+struct rpmpd {
+	struct generic_pm_domain pd;
+	struct generic_pm_domain *parent;
+	struct rpmpd *peer;
+	const bool active_only;
+	unsigned int corner;
+	bool enabled;
+	const int res_type;
+	const int res_id;
+	struct qcom_smd_rpm *rpm;
+	unsigned int max_state;
+	__le32 key;
+	bool state_synced;
+};
+
+struct rpmpd_desc {
+	struct rpmpd **rpmpds;
+	size_t num_pds;
+	unsigned int max_state;
+};
+
+static DEFINE_MUTEX(rpmpd_lock);
+
+/* CX */
+static struct rpmpd cx_rwcx0_lvl_ao;
+static struct rpmpd cx_rwcx0_lvl = {
+	.pd = { .name = "cx", },
+	.peer = &cx_rwcx0_lvl_ao,
+	.res_type = RPMPD_RWCX,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_rwcx0_lvl_ao = {
+	.pd = { .name = "cx_ao", },
+	.peer = &cx_rwcx0_lvl,
+	.active_only = true,
+	.res_type = RPMPD_RWCX,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_s1a_corner_ao;
+static struct rpmpd cx_s1a_corner = {
+	.pd = { .name = "cx", },
+	.peer = &cx_s1a_corner_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd cx_s1a_corner_ao = {
+	.pd = { .name = "cx_ao", },
+	.peer = &cx_s1a_corner,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd cx_s2a_corner_ao;
+static struct rpmpd cx_s2a_corner = {
+	.pd = { .name = "cx", },
+	.peer = &cx_s2a_corner_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd cx_s2a_corner_ao = {
+	.pd = { .name = "cx_ao", },
+	.peer = &cx_s2a_corner,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd cx_s2a_lvl_ao;
+static struct rpmpd cx_s2a_lvl = {
+	.pd = { .name = "cx", },
+	.peer = &cx_s2a_lvl_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_s2a_lvl_ao = {
+	.pd = { .name = "cx_ao", },
+	.peer = &cx_s2a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_s3a_lvl_ao;
+static struct rpmpd cx_s3a_lvl = {
+	.pd = { .name = "cx", },
+	.peer = &cx_s3a_lvl_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 3,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_s3a_lvl_ao = {
+	.pd = { .name = "cx_ao", },
+	.peer = &cx_s3a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 3,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd cx_rwcx0_vfl = {
+	.pd = { .name = "cx_vfl", },
+	.res_type = RPMPD_RWCX,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd cx_rwsc2_vfl = {
+	.pd = { .name = "cx_vfl", },
+	.res_type = RPMPD_RWSC,
+	.res_id = 2,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd cx_s1a_vfc = {
+	.pd = { .name = "cx_vfc", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_FLOOR_CORNER,
+};
+
+static struct rpmpd cx_s2a_vfc = {
+	.pd = { .name = "cx_vfc", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_FLOOR_CORNER,
+};
+
+static struct rpmpd cx_s2a_vfl = {
+	.pd = { .name = "cx_vfl", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd cx_s3a_vfl = {
+	.pd = { .name = "cx_vfl", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 3,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+/* G(F)X */
+static struct rpmpd gfx_s2b_corner = {
+	.pd = { .name = "gfx", },
+	.res_type = RPMPD_SMPB,
+	.res_id = 2,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd gfx_s2b_vfc = {
+	.pd = { .name = "gfx_vfc", },
+	.res_type = RPMPD_SMPB,
+	.res_id = 2,
+	.key = KEY_FLOOR_CORNER,
+};
+
+static struct rpmpd mx_rwmx0_lvl;
+static struct rpmpd gx_rwgx0_lvl_ao;
+static struct rpmpd gx_rwgx0_lvl = {
+	.pd = { .name = "gx", },
+	.peer = &gx_rwgx0_lvl_ao,
+	.res_type = RPMPD_RWGX,
+	.parent = &mx_rwmx0_lvl.pd,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_rwmx0_lvl_ao;
+static struct rpmpd gx_rwgx0_lvl_ao = {
+	.pd = { .name = "gx_ao", },
+	.peer = &gx_rwgx0_lvl,
+	.parent = &mx_rwmx0_lvl_ao.pd,
+	.active_only = true,
+	.res_type = RPMPD_RWGX,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+/* MX */
+static struct rpmpd mx_l3a_corner_ao;
+static struct rpmpd mx_l3a_corner = {
+	.pd = { .name = "mx", },
+	.peer = &mx_l3a_corner_ao,
+	.res_type = RPMPD_LDOA,
+	.res_id = 3,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd mx_l3a_corner_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_l3a_corner,
+	.active_only = true,
+	.res_type = RPMPD_LDOA,
+	.res_id = 3,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd mx_l12a_lvl_ao;
+static struct rpmpd mx_l12a_lvl = {
+	.pd = { .name = "mx", },
+	.peer = &mx_l12a_lvl_ao,
+	.res_type = RPMPD_LDOA,
+	.res_id = 12,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_l12a_lvl_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_l12a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_LDOA,
+	.res_id = 12,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_s2a_corner_ao;
+static struct rpmpd mx_s2a_corner = {
+	.pd = { .name = "mx", },
+	.peer = &mx_s2a_corner_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd mx_s2a_corner_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_s2a_corner,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 2,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd mx_rwmx0_lvl_ao;
+static struct rpmpd mx_rwmx0_lvl = {
+	.pd = { .name = "mx", },
+	.peer = &mx_rwmx0_lvl_ao,
+	.res_type = RPMPD_RWMX,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_rwmx0_lvl_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_rwmx0_lvl,
+	.active_only = true,
+	.res_type = RPMPD_RWMX,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_s6a_lvl_ao;
+static struct rpmpd mx_s6a_lvl = {
+	.pd = { .name = "mx", },
+	.peer = &mx_s6a_lvl_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 6,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_s6a_lvl_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_s6a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 6,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_s7a_lvl_ao;
+static struct rpmpd mx_s7a_lvl = {
+	.pd = { .name = "mx", },
+	.peer = &mx_s7a_lvl_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 7,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_s7a_lvl_ao = {
+	.pd = { .name = "mx_ao", },
+	.peer = &mx_s7a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 7,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd mx_l12a_vfl = {
+	.pd = { .name = "mx_vfl", },
+	.res_type = RPMPD_LDOA,
+	.res_id = 12,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd mx_rwmx0_vfl = {
+	.pd = { .name = "mx_vfl", },
+	.res_type = RPMPD_RWMX,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd mx_rwsm6_vfl = {
+	.pd = { .name = "mx_vfl", },
+	.res_type = RPMPD_RWSM,
+	.res_id = 6,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+/* MD */
+static struct rpmpd md_s1a_corner_ao;
+static struct rpmpd md_s1a_corner = {
+	.pd = { .name = "md", },
+	.peer = &md_s1a_corner_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd md_s1a_corner_ao = {
+	.pd = { .name = "md_ao", },
+	.peer = &md_s1a_corner,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd md_s1a_lvl_ao;
+static struct rpmpd md_s1a_lvl = {
+	.pd = { .name = "md", },
+	.peer = &md_s1a_lvl_ao,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd md_s1a_lvl_ao = {
+	.pd = { .name = "md_ao", },
+	.peer = &md_s1a_lvl,
+	.active_only = true,
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd md_s1a_vfc = {
+	.pd = { .name = "md_vfc", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 1,
+	.key = KEY_FLOOR_CORNER,
+};
+
+/* LPI_CX */
+static struct rpmpd lpi_cx_rwlc0_lvl = {
+	.pd = { .name = "lpi_cx", },
+	.res_type = RPMPD_RWLC,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd lpi_cx_rwlc0_vfl = {
+	.pd = { .name = "lpi_cx_vfl", },
+	.res_type = RPMPD_RWLC,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+/* LPI_MX */
+static struct rpmpd lpi_mx_rwlm0_lvl = {
+	.pd = { .name = "lpi_mx", },
+	.res_type = RPMPD_RWLM,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd lpi_mx_rwlm0_vfl = {
+	.pd = { .name = "lpi_mx_vfl", },
+	.res_type = RPMPD_RWLM,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+/* SSC_CX */
+static struct rpmpd ssc_cx_l26a_corner = {
+	.pd = { .name = "ssc_cx", },
+	.res_type = RPMPD_LDOA,
+	.res_id = 26,
+	.key = KEY_CORNER,
+};
+
+static struct rpmpd ssc_cx_rwlc0_lvl = {
+	.pd = { .name = "ssc_cx", },
+	.res_type = RPMPD_RWLC,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd ssc_cx_rwsc0_lvl = {
+	.pd = { .name = "ssc_cx", },
+	.res_type = RPMPD_RWSC,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd ssc_cx_l26a_vfc = {
+	.pd = { .name = "ssc_cx_vfc", },
+	.res_type = RPMPD_LDOA,
+	.res_id = 26,
+	.key = KEY_FLOOR_CORNER,
+};
+
+static struct rpmpd ssc_cx_rwlc0_vfl = {
+	.pd = { .name = "ssc_cx_vfl", },
+	.res_type = RPMPD_RWLC,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd ssc_cx_rwsc0_vfl = {
+	.pd = { .name = "ssc_cx_vfl", },
+	.res_type = RPMPD_RWSC,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+/* SSC_MX */
+static struct rpmpd ssc_mx_rwlm0_lvl = {
+	.pd = { .name = "ssc_mx", },
+	.res_type = RPMPD_RWLM,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd ssc_mx_rwsm0_lvl = {
+	.pd = { .name = "ssc_mx", },
+	.res_type = RPMPD_RWSM,
+	.res_id = 0,
+	.key = KEY_LEVEL,
+};
+
+static struct rpmpd ssc_mx_rwlm0_vfl = {
+	.pd = { .name = "ssc_mx_vfl", },
+	.res_type = RPMPD_RWLM,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd ssc_mx_rwsm0_vfl = {
+	.pd = { .name = "ssc_mx_vfl", },
+	.res_type = RPMPD_RWSM,
+	.res_id = 0,
+	.key = KEY_FLOOR_LEVEL,
+};
+
+static struct rpmpd *mdm9607_rpmpds[] = {
+	[MDM9607_VDDCX] =	&cx_s3a_lvl,
+	[MDM9607_VDDCX_AO] =	&cx_s3a_lvl_ao,
+	[MDM9607_VDDCX_VFL] =	&cx_s3a_vfl,
+	[MDM9607_VDDMX] =	&mx_l12a_lvl,
+	[MDM9607_VDDMX_AO] =	&mx_l12a_lvl_ao,
+	[MDM9607_VDDMX_VFL] =	&mx_l12a_vfl,
+};
+
+static const struct rpmpd_desc mdm9607_desc = {
+	.rpmpds = mdm9607_rpmpds,
+	.num_pds = ARRAY_SIZE(mdm9607_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO,
+};
+
+static struct rpmpd *msm8226_rpmpds[] = {
+	[MSM8226_VDDCX] =	&cx_s1a_corner,
+	[MSM8226_VDDCX_AO] =	&cx_s1a_corner_ao,
+	[MSM8226_VDDCX_VFC] =	&cx_s1a_vfc,
+};
+
+static const struct rpmpd_desc msm8226_desc = {
+	.rpmpds = msm8226_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8226_rpmpds),
+	.max_state = MAX_CORNER_RPMPD_STATE,
+};
+
+static struct rpmpd *msm8939_rpmpds[] = {
+	[MSM8939_VDDMDCX] =	&md_s1a_corner,
+	[MSM8939_VDDMDCX_AO] =	&md_s1a_corner_ao,
+	[MSM8939_VDDMDCX_VFC] =	&md_s1a_vfc,
+	[MSM8939_VDDCX] =	&cx_s2a_corner,
+	[MSM8939_VDDCX_AO] =	&cx_s2a_corner_ao,
+	[MSM8939_VDDCX_VFC] =	&cx_s2a_vfc,
+	[MSM8939_VDDMX] =	&mx_l3a_corner,
+	[MSM8939_VDDMX_AO] =	&mx_l3a_corner_ao,
+};
+
+static const struct rpmpd_desc msm8939_desc = {
+	.rpmpds = msm8939_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8939_rpmpds),
+	.max_state = MAX_CORNER_RPMPD_STATE,
+};
+
+static struct rpmpd *msm8916_rpmpds[] = {
+	[MSM8916_VDDCX] =	&cx_s1a_corner,
+	[MSM8916_VDDCX_AO] =	&cx_s1a_corner_ao,
+	[MSM8916_VDDCX_VFC] =	&cx_s1a_vfc,
+	[MSM8916_VDDMX] =	&mx_l3a_corner,
+	[MSM8916_VDDMX_AO] =	&mx_l3a_corner_ao,
+};
+
+static const struct rpmpd_desc msm8916_desc = {
+	.rpmpds = msm8916_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8916_rpmpds),
+	.max_state = MAX_CORNER_RPMPD_STATE,
+};
+
+static struct rpmpd *msm8953_rpmpds[] = {
+	[MSM8953_VDDMD] =	&md_s1a_lvl,
+	[MSM8953_VDDMD_AO] =	&md_s1a_lvl_ao,
+	[MSM8953_VDDCX] =	&cx_s2a_lvl,
+	[MSM8953_VDDCX_AO] =	&cx_s2a_lvl_ao,
+	[MSM8953_VDDCX_VFL] =	&cx_s2a_vfl,
+	[MSM8953_VDDMX] =	&mx_s7a_lvl,
+	[MSM8953_VDDMX_AO] =	&mx_s7a_lvl_ao,
+};
+
+static const struct rpmpd_desc msm8953_desc = {
+	.rpmpds = msm8953_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8953_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO,
+};
+
+static struct rpmpd *msm8976_rpmpds[] = {
+	[MSM8976_VDDCX] =	&cx_s2a_lvl,
+	[MSM8976_VDDCX_AO] =	&cx_s2a_lvl_ao,
+	[MSM8976_VDDCX_VFL] =	&cx_rwsc2_vfl,
+	[MSM8976_VDDMX] =	&mx_s6a_lvl,
+	[MSM8976_VDDMX_AO] =	&mx_s6a_lvl_ao,
+	[MSM8976_VDDMX_VFL] =	&mx_rwsm6_vfl,
+};
+
+static const struct rpmpd_desc msm8976_desc = {
+	.rpmpds = msm8976_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8976_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO_HIGH,
+};
+
+static struct rpmpd *msm8994_rpmpds[] = {
+	[MSM8994_VDDCX] =	&cx_s1a_corner,
+	[MSM8994_VDDCX_AO] =	&cx_s1a_corner_ao,
+	[MSM8994_VDDCX_VFC] =	&cx_s1a_vfc,
+	[MSM8994_VDDMX] =	&mx_s2a_corner,
+	[MSM8994_VDDMX_AO] =	&mx_s2a_corner_ao,
+
+	/* Attention! *Some* 8994 boards with pm8004 may use SMPC here! */
+	[MSM8994_VDDGFX] =	&gfx_s2b_corner,
+	[MSM8994_VDDGFX_VFC] =	&gfx_s2b_vfc,
+};
+
+static const struct rpmpd_desc msm8994_desc = {
+	.rpmpds = msm8994_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8994_rpmpds),
+	.max_state = MAX_CORNER_RPMPD_STATE,
+};
+
+static struct rpmpd *msm8996_rpmpds[] = {
+	[MSM8996_VDDCX] =	&cx_s1a_corner,
+	[MSM8996_VDDCX_AO] =	&cx_s1a_corner_ao,
+	[MSM8996_VDDCX_VFC] =	&cx_s1a_vfc,
+	[MSM8996_VDDMX] =	&mx_s2a_corner,
+	[MSM8996_VDDMX_AO] =	&mx_s2a_corner_ao,
+	[MSM8996_VDDSSCX] =	&ssc_cx_l26a_corner,
+	[MSM8996_VDDSSCX_VFC] =	&ssc_cx_l26a_vfc,
+};
+
+static const struct rpmpd_desc msm8996_desc = {
+	.rpmpds = msm8996_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8996_rpmpds),
+	.max_state = MAX_CORNER_RPMPD_STATE,
+};
+
+static struct rpmpd *msm8998_rpmpds[] = {
+	[MSM8998_VDDCX] =	&cx_rwcx0_lvl,
+	[MSM8998_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[MSM8998_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[MSM8998_VDDMX] =	&mx_rwmx0_lvl,
+	[MSM8998_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[MSM8998_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[MSM8998_SSCCX] =	&ssc_cx_rwsc0_lvl,
+	[MSM8998_SSCCX_VFL] =	&ssc_cx_rwsc0_vfl,
+	[MSM8998_SSCMX] =	&ssc_mx_rwsm0_lvl,
+	[MSM8998_SSCMX_VFL] =	&ssc_mx_rwsm0_vfl,
+};
+
+static const struct rpmpd_desc msm8998_desc = {
+	.rpmpds = msm8998_rpmpds,
+	.num_pds = ARRAY_SIZE(msm8998_rpmpds),
+	.max_state = RPM_SMD_LEVEL_BINNING,
+};
+
+static struct rpmpd *qcs404_rpmpds[] = {
+	[QCS404_VDDMX] =	&mx_rwmx0_lvl,
+	[QCS404_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[QCS404_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[QCS404_LPICX] =	&lpi_cx_rwlc0_lvl,
+	[QCS404_LPICX_VFL] =	&lpi_cx_rwlc0_vfl,
+	[QCS404_LPIMX] =	&lpi_mx_rwlm0_lvl,
+	[QCS404_LPIMX_VFL] =	&lpi_mx_rwlm0_vfl,
+};
+
+static const struct rpmpd_desc qcs404_desc = {
+	.rpmpds = qcs404_rpmpds,
+	.num_pds = ARRAY_SIZE(qcs404_rpmpds),
+	.max_state = RPM_SMD_LEVEL_BINNING,
+};
+
+static struct rpmpd *sdm660_rpmpds[] = {
+	[SDM660_VDDCX] =	&cx_rwcx0_lvl,
+	[SDM660_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[SDM660_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[SDM660_VDDMX] =	&mx_rwmx0_lvl,
+	[SDM660_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[SDM660_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[SDM660_SSCCX] =	&ssc_cx_rwlc0_lvl,
+	[SDM660_SSCCX_VFL] =	&ssc_cx_rwlc0_vfl,
+	[SDM660_SSCMX] =	&ssc_mx_rwlm0_lvl,
+	[SDM660_SSCMX_VFL] =	&ssc_mx_rwlm0_vfl,
+};
+
+static const struct rpmpd_desc sdm660_desc = {
+	.rpmpds = sdm660_rpmpds,
+	.num_pds = ARRAY_SIZE(sdm660_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO,
+};
+
+static struct rpmpd *sm6115_rpmpds[] = {
+	[SM6115_VDDCX] =	&cx_rwcx0_lvl,
+	[SM6115_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[SM6115_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[SM6115_VDDMX] =	&mx_rwmx0_lvl,
+	[SM6115_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[SM6115_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[SM6115_VDD_LPI_CX] =	&lpi_cx_rwlc0_lvl,
+	[SM6115_VDD_LPI_MX] =	&lpi_mx_rwlm0_lvl,
+};
+
+static const struct rpmpd_desc sm6115_desc = {
+	.rpmpds = sm6115_rpmpds,
+	.num_pds = ARRAY_SIZE(sm6115_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
+};
+
+static struct rpmpd *sm6125_rpmpds[] = {
+	[SM6125_VDDCX] =	&cx_rwcx0_lvl,
+	[SM6125_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[SM6125_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[SM6125_VDDMX] =	&mx_rwmx0_lvl,
+	[SM6125_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[SM6125_VDDMX_VFL] =	&mx_rwmx0_vfl,
+};
+
+static const struct rpmpd_desc sm6125_desc = {
+	.rpmpds = sm6125_rpmpds,
+	.num_pds = ARRAY_SIZE(sm6125_rpmpds),
+	.max_state = RPM_SMD_LEVEL_BINNING,
+};
+
+static struct rpmpd *sm6375_rpmpds[] = {
+	[SM6375_VDDCX] =	&cx_rwcx0_lvl,
+	[SM6375_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[SM6375_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[SM6375_VDDMX] =	&mx_rwmx0_lvl,
+	[SM6375_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[SM6375_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[SM6375_VDDGX] =	&gx_rwgx0_lvl,
+	[SM6375_VDDGX_AO] =	&gx_rwgx0_lvl_ao,
+	[SM6375_VDD_LPI_CX] =	&lpi_cx_rwlc0_lvl,
+	[SM6375_VDD_LPI_MX] =	&lpi_mx_rwlm0_lvl,
+};
+
+static const struct rpmpd_desc sm6375_desc = {
+	.rpmpds = sm6375_rpmpds,
+	.num_pds = ARRAY_SIZE(sm6375_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
+};
+
+static struct rpmpd *qcm2290_rpmpds[] = {
+	[QCM2290_VDDCX] =	&cx_rwcx0_lvl,
+	[QCM2290_VDDCX_AO] =	&cx_rwcx0_lvl_ao,
+	[QCM2290_VDDCX_VFL] =	&cx_rwcx0_vfl,
+	[QCM2290_VDDMX] =	&mx_rwmx0_lvl,
+	[QCM2290_VDDMX_AO] =	&mx_rwmx0_lvl_ao,
+	[QCM2290_VDDMX_VFL] =	&mx_rwmx0_vfl,
+	[QCM2290_VDD_LPI_CX] =	&lpi_cx_rwlc0_lvl,
+	[QCM2290_VDD_LPI_MX] =	&lpi_mx_rwlm0_lvl,
+};
+
+static const struct rpmpd_desc qcm2290_desc = {
+	.rpmpds = qcm2290_rpmpds,
+	.num_pds = ARRAY_SIZE(qcm2290_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
+};
+
+static const struct of_device_id rpmpd_match_table[] = {
+	{ .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
+	{ .compatible = "qcom,msm8226-rpmpd", .data = &msm8226_desc },
+	{ .compatible = "qcom,msm8909-rpmpd", .data = &msm8916_desc },
+	{ .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
+	{ .compatible = "qcom,msm8939-rpmpd", .data = &msm8939_desc },
+	{ .compatible = "qcom,msm8953-rpmpd", .data = &msm8953_desc },
+	{ .compatible = "qcom,msm8976-rpmpd", .data = &msm8976_desc },
+	{ .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
+	{ .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
+	{ .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
+	{ .compatible = "qcom,qcm2290-rpmpd", .data = &qcm2290_desc },
+	{ .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
+	{ .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
+	{ .compatible = "qcom,sm6115-rpmpd", .data = &sm6115_desc },
+	{ .compatible = "qcom,sm6125-rpmpd", .data = &sm6125_desc },
+	{ .compatible = "qcom,sm6375-rpmpd", .data = &sm6375_desc },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rpmpd_match_table);
+
+static int rpmpd_send_enable(struct rpmpd *pd, bool enable)
+{
+	struct rpmpd_req req = {
+		.key = KEY_ENABLE,
+		.nbytes = cpu_to_le32(sizeof(u32)),
+		.value = cpu_to_le32(enable),
+	};
+
+	return qcom_rpm_smd_write(pd->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
+				  pd->res_type, pd->res_id, &req, sizeof(req));
+}
+
+static int rpmpd_send_corner(struct rpmpd *pd, int state, unsigned int corner)
+{
+	struct rpmpd_req req = {
+		.key = pd->key,
+		.nbytes = cpu_to_le32(sizeof(u32)),
+		.value = cpu_to_le32(corner),
+	};
+
+	return qcom_rpm_smd_write(pd->rpm, state, pd->res_type, pd->res_id,
+				  &req, sizeof(req));
+};
+
+static void to_active_sleep(struct rpmpd *pd, unsigned int corner,
+			    unsigned int *active, unsigned int *sleep)
+{
+	*active = corner;
+
+	if (pd->active_only)
+		*sleep = 0;
+	else
+		*sleep = *active;
+}
+
+static int rpmpd_aggregate_corner(struct rpmpd *pd)
+{
+	int ret;
+	struct rpmpd *peer = pd->peer;
+	unsigned int active_corner, sleep_corner;
+	unsigned int this_active_corner = 0, this_sleep_corner = 0;
+	unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
+
+	/* Clamp to the highest corner/level if sync_state isn't done yet */
+	if (!pd->state_synced)
+		this_active_corner = this_sleep_corner = pd->max_state - 1;
+	else
+		to_active_sleep(pd, pd->corner, &this_active_corner, &this_sleep_corner);
+
+	if (peer && peer->enabled)
+		to_active_sleep(peer, peer->corner, &peer_active_corner,
+				&peer_sleep_corner);
+
+	active_corner = max(this_active_corner, peer_active_corner);
+
+	ret = rpmpd_send_corner(pd, QCOM_SMD_RPM_ACTIVE_STATE, active_corner);
+	if (ret)
+		return ret;
+
+	sleep_corner = max(this_sleep_corner, peer_sleep_corner);
+
+	return rpmpd_send_corner(pd, QCOM_SMD_RPM_SLEEP_STATE, sleep_corner);
+}
+
+static int rpmpd_power_on(struct generic_pm_domain *domain)
+{
+	int ret;
+	struct rpmpd *pd = domain_to_rpmpd(domain);
+
+	mutex_lock(&rpmpd_lock);
+
+	ret = rpmpd_send_enable(pd, true);
+	if (ret)
+		goto out;
+
+	pd->enabled = true;
+
+	if (pd->corner)
+		ret = rpmpd_aggregate_corner(pd);
+
+out:
+	mutex_unlock(&rpmpd_lock);
+
+	return ret;
+}
+
+static int rpmpd_power_off(struct generic_pm_domain *domain)
+{
+	int ret;
+	struct rpmpd *pd = domain_to_rpmpd(domain);
+
+	mutex_lock(&rpmpd_lock);
+
+	ret = rpmpd_send_enable(pd, false);
+	if (!ret)
+		pd->enabled = false;
+
+	mutex_unlock(&rpmpd_lock);
+
+	return ret;
+}
+
+static int rpmpd_set_performance(struct generic_pm_domain *domain,
+				 unsigned int state)
+{
+	int ret = 0;
+	struct rpmpd *pd = domain_to_rpmpd(domain);
+
+	if (state > pd->max_state)
+		state = pd->max_state;
+
+	mutex_lock(&rpmpd_lock);
+
+	pd->corner = state;
+
+	/* Always send updates for vfc and vfl */
+	if (!pd->enabled && pd->key != cpu_to_le32(KEY_FLOOR_CORNER) &&
+	    pd->key != cpu_to_le32(KEY_FLOOR_LEVEL))
+		goto out;
+
+	ret = rpmpd_aggregate_corner(pd);
+
+out:
+	mutex_unlock(&rpmpd_lock);
+
+	return ret;
+}
+
+static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
+					  struct dev_pm_opp *opp)
+{
+	return dev_pm_opp_get_level(opp);
+}
+
+static int rpmpd_probe(struct platform_device *pdev)
+{
+	int i;
+	size_t num;
+	struct genpd_onecell_data *data;
+	struct qcom_smd_rpm *rpm;
+	struct rpmpd **rpmpds;
+	const struct rpmpd_desc *desc;
+
+	rpm = dev_get_drvdata(pdev->dev.parent);
+	if (!rpm) {
+		dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
+		return -ENODEV;
+	}
+
+	desc = of_device_get_match_data(&pdev->dev);
+	if (!desc)
+		return -EINVAL;
+
+	rpmpds = desc->rpmpds;
+	num = desc->num_pds;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains),
+				     GFP_KERNEL);
+	if (!data->domains)
+		return -ENOMEM;
+
+	data->num_domains = num;
+
+	for (i = 0; i < num; i++) {
+		if (!rpmpds[i]) {
+			dev_warn(&pdev->dev, "rpmpds[] with empty entry at index=%d\n",
+				 i);
+			continue;
+		}
+
+		rpmpds[i]->rpm = rpm;
+		rpmpds[i]->max_state = desc->max_state;
+		rpmpds[i]->pd.power_off = rpmpd_power_off;
+		rpmpds[i]->pd.power_on = rpmpd_power_on;
+		rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
+		rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
+		pm_genpd_init(&rpmpds[i]->pd, NULL, true);
+
+		data->domains[i] = &rpmpds[i]->pd;
+	}
+
+	/* Add subdomains */
+	for (i = 0; i < num; i++) {
+		if (!rpmpds[i])
+			continue;
+
+		if (rpmpds[i]->parent)
+			pm_genpd_add_subdomain(rpmpds[i]->parent, &rpmpds[i]->pd);
+	}
+
+	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+}
+
+static void rpmpd_sync_state(struct device *dev)
+{
+	const struct rpmpd_desc *desc = of_device_get_match_data(dev);
+	struct rpmpd **rpmpds = desc->rpmpds;
+	struct rpmpd *pd;
+	unsigned int i;
+	int ret;
+
+	mutex_lock(&rpmpd_lock);
+	for (i = 0; i < desc->num_pds; i++) {
+		pd = rpmpds[i];
+		if (!pd)
+			continue;
+
+		pd->state_synced = true;
+
+		if (!pd->enabled)
+			pd->corner = 0;
+
+		ret = rpmpd_aggregate_corner(pd);
+		if (ret)
+			dev_err(dev, "failed to sync %s: %d\n", pd->pd.name, ret);
+	}
+	mutex_unlock(&rpmpd_lock);
+}
+
+static struct platform_driver rpmpd_driver = {
+	.driver = {
+		.name = "qcom-rpmpd",
+		.of_match_table = rpmpd_match_table,
+		.suppress_bind_attrs = true,
+		.sync_state = rpmpd_sync_state,
+	},
+	.probe = rpmpd_probe,
+};
+
+static int __init rpmpd_init(void)
+{
+	return platform_driver_register(&rpmpd_driver);
+}
+core_initcall(rpmpd_init);
+
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPM Power Domain Driver");
+MODULE_LICENSE("GPL v2");