VisionFive2 Linux kernel

diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig
index e31215680771..d789509ae7e9 100644
--- a/drivers/power/avs/Kconfig
+++ b/drivers/power/avs/Kconfig
@@ -1,16 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-menuconfig POWER_AVS
-	bool "Adaptive Voltage Scaling class support"
-	help
-	  AVS is a power management technique which finely controls the
-	  operating voltage of a device in order to optimize (i.e. reduce)
-	  its power consumption.
-	  At a given operating point the voltage is adapted depending on
-	  static factors (chip manufacturing process) and dynamic factors
-	  (temperature depending performance).
-	  AVS is also called SmartReflex on OMAP devices.
-
-	  Say Y here to enable Adaptive Voltage Scaling class support.
 
 config QCOM_CPR
 	tristate "QCOM Core Power Reduction (CPR) support"
diff --git a/drivers/power/avs/Makefile b/drivers/power/avs/Makefile
index d611a465cd42..735832f47214 100644
--- a/drivers/power/avs/Makefile
+++ b/drivers/power/avs/Makefile
@@ -1,3 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_POWER_AVS_OMAP)		+= smartreflex.o
 obj-$(CONFIG_QCOM_CPR)			+= qcom-cpr.o
diff --git a/drivers/power/avs/smartreflex.c b/drivers/power/avs/smartreflex.c
deleted file mode 100644
index 5376f3d22f31..000000000000
--- a/drivers/power/avs/smartreflex.c
+++ /dev/null
@@ -1,1045 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * OMAP SmartReflex Voltage Control
- *
- * Author: Thara Gopinath	<thara@ti.com>
- *
- * Copyright (C) 2012 Texas Instruments, Inc.
- * Thara Gopinath <thara@ti.com>
- *
- * Copyright (C) 2008 Nokia Corporation
- * Kalle Jokiniemi
- *
- * Copyright (C) 2007 Texas Instruments, Inc.
- * Lesly A M <x0080970@ti.com>
- */
-
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/interrupt.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/debugfs.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/pm_runtime.h>
-#include <linux/power/smartreflex.h>
-
-#define DRIVER_NAME	"smartreflex"
-#define SMARTREFLEX_NAME_LEN	32
-#define NVALUE_NAME_LEN		40
-#define SR_DISABLE_TIMEOUT	200
-
-/* sr_list contains all the instances of smartreflex module */
-static LIST_HEAD(sr_list);
-
-static struct omap_sr_class_data *sr_class;
-static struct dentry		*sr_dbg_dir;
-
-static inline void sr_write_reg(struct omap_sr *sr, unsigned offset, u32 value)
-{
-	__raw_writel(value, (sr->base + offset));
-}
-
-static inline void sr_modify_reg(struct omap_sr *sr, unsigned offset, u32 mask,
-					u32 value)
-{
-	u32 reg_val;
-
-	/*
-	 * Smartreflex error config register is special as it contains
-	 * certain status bits which if written a 1 into means a clear
-	 * of those bits. So in order to make sure no accidental write of
-	 * 1 happens to those status bits, do a clear of them in the read
-	 * value. This mean this API doesn't rewrite values in these bits
-	 * if they are currently set, but does allow the caller to write
-	 * those bits.
-	 */
-	if (sr->ip_type == SR_TYPE_V1 && offset == ERRCONFIG_V1)
-		mask |= ERRCONFIG_STATUS_V1_MASK;
-	else if (sr->ip_type == SR_TYPE_V2 && offset == ERRCONFIG_V2)
-		mask |= ERRCONFIG_VPBOUNDINTST_V2;
-
-	reg_val = __raw_readl(sr->base + offset);
-	reg_val &= ~mask;
-
-	value &= mask;
-
-	reg_val |= value;
-
-	__raw_writel(reg_val, (sr->base + offset));
-}
-
-static inline u32 sr_read_reg(struct omap_sr *sr, unsigned offset)
-{
-	return __raw_readl(sr->base + offset);
-}
-
-static struct omap_sr *_sr_lookup(struct voltagedomain *voltdm)
-{
-	struct omap_sr *sr_info;
-
-	if (!voltdm) {
-		pr_err("%s: Null voltage domain passed!\n", __func__);
-		return ERR_PTR(-EINVAL);
-	}
-
-	list_for_each_entry(sr_info, &sr_list, node) {
-		if (voltdm == sr_info->voltdm)
-			return sr_info;
-	}
-
-	return ERR_PTR(-ENODATA);
-}
-
-static irqreturn_t sr_interrupt(int irq, void *data)
-{
-	struct omap_sr *sr_info = data;
-	u32 status = 0;
-
-	switch (sr_info->ip_type) {
-	case SR_TYPE_V1:
-		/* Read the status bits */
-		status = sr_read_reg(sr_info, ERRCONFIG_V1);
-
-		/* Clear them by writing back */
-		sr_write_reg(sr_info, ERRCONFIG_V1, status);
-		break;
-	case SR_TYPE_V2:
-		/* Read the status bits */
-		status = sr_read_reg(sr_info, IRQSTATUS);
-
-		/* Clear them by writing back */
-		sr_write_reg(sr_info, IRQSTATUS, status);
-		break;
-	default:
-		dev_err(&sr_info->pdev->dev, "UNKNOWN IP type %d\n",
-			sr_info->ip_type);
-		return IRQ_NONE;
-	}
-
-	if (sr_class->notify)
-		sr_class->notify(sr_info, status);
-
-	return IRQ_HANDLED;
-}
-
-static void sr_set_clk_length(struct omap_sr *sr)
-{
-	struct clk *fck;
-	u32 fclk_speed;
-
-	/* Try interconnect target module fck first if it already exists */
-	fck = clk_get(sr->pdev->dev.parent, "fck");
-	if (IS_ERR(fck)) {
-		fck = clk_get(&sr->pdev->dev, "fck");
-		if (IS_ERR(fck)) {
-			dev_err(&sr->pdev->dev,
-				"%s: unable to get fck for device %s\n",
-				__func__, dev_name(&sr->pdev->dev));
-			return;
-		}
-	}
-
-	fclk_speed = clk_get_rate(fck);
-	clk_put(fck);
-
-	switch (fclk_speed) {
-	case 12000000:
-		sr->clk_length = SRCLKLENGTH_12MHZ_SYSCLK;
-		break;
-	case 13000000:
-		sr->clk_length = SRCLKLENGTH_13MHZ_SYSCLK;
-		break;
-	case 19200000:
-		sr->clk_length = SRCLKLENGTH_19MHZ_SYSCLK;
-		break;
-	case 26000000:
-		sr->clk_length = SRCLKLENGTH_26MHZ_SYSCLK;
-		break;
-	case 38400000:
-		sr->clk_length = SRCLKLENGTH_38MHZ_SYSCLK;
-		break;
-	default:
-		dev_err(&sr->pdev->dev, "%s: Invalid fclk rate: %d\n",
-			__func__, fclk_speed);
-		break;
-	}
-}
-
-static void sr_start_vddautocomp(struct omap_sr *sr)
-{
-	if (!sr_class || !(sr_class->enable) || !(sr_class->configure)) {
-		dev_warn(&sr->pdev->dev,
-			 "%s: smartreflex class driver not registered\n",
-			 __func__);
-		return;
-	}
-
-	if (!sr_class->enable(sr))
-		sr->autocomp_active = true;
-}
-
-static void sr_stop_vddautocomp(struct omap_sr *sr)
-{
-	if (!sr_class || !(sr_class->disable)) {
-		dev_warn(&sr->pdev->dev,
-			 "%s: smartreflex class driver not registered\n",
-			 __func__);
-		return;
-	}
-
-	if (sr->autocomp_active) {
-		sr_class->disable(sr, 1);
-		sr->autocomp_active = false;
-	}
-}
-
-/*
- * This function handles the initializations which have to be done
- * only when both sr device and class driver regiter has
- * completed. This will be attempted to be called from both sr class
- * driver register and sr device intializtion API's. Only one call
- * will ultimately succeed.
- *
- * Currently this function registers interrupt handler for a particular SR
- * if smartreflex class driver is already registered and has
- * requested for interrupts and the SR interrupt line in present.
- */
-static int sr_late_init(struct omap_sr *sr_info)
-{
-	struct omap_sr_data *pdata = sr_info->pdev->dev.platform_data;
-	int ret = 0;
-
-	if (sr_class->notify && sr_class->notify_flags && sr_info->irq) {
-		ret = devm_request_irq(&sr_info->pdev->dev, sr_info->irq,
-				       sr_interrupt, 0, sr_info->name, sr_info);
-		if (ret)
-			goto error;
-		disable_irq(sr_info->irq);
-	}
-
-	if (pdata && pdata->enable_on_init)
-		sr_start_vddautocomp(sr_info);
-
-	return ret;
-
-error:
-	list_del(&sr_info->node);
-	dev_err(&sr_info->pdev->dev, "%s: ERROR in registering interrupt handler. Smartreflex will not function as desired\n",
-		__func__);
-
-	return ret;
-}
-
-static void sr_v1_disable(struct omap_sr *sr)
-{
-	int timeout = 0;
-	int errconf_val = ERRCONFIG_MCUACCUMINTST | ERRCONFIG_MCUVALIDINTST |
-			ERRCONFIG_MCUBOUNDINTST;
-
-	/* Enable MCUDisableAcknowledge interrupt */
-	sr_modify_reg(sr, ERRCONFIG_V1,
-			ERRCONFIG_MCUDISACKINTEN, ERRCONFIG_MCUDISACKINTEN);
-
-	/* SRCONFIG - disable SR */
-	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, 0x0);
-
-	/* Disable all other SR interrupts and clear the status as needed */
-	if (sr_read_reg(sr, ERRCONFIG_V1) & ERRCONFIG_VPBOUNDINTST_V1)
-		errconf_val |= ERRCONFIG_VPBOUNDINTST_V1;
-	sr_modify_reg(sr, ERRCONFIG_V1,
-			(ERRCONFIG_MCUACCUMINTEN | ERRCONFIG_MCUVALIDINTEN |
-			ERRCONFIG_MCUBOUNDINTEN | ERRCONFIG_VPBOUNDINTEN_V1),
-			errconf_val);
-
-	/*
-	 * Wait for SR to be disabled.
-	 * wait until ERRCONFIG.MCUDISACKINTST = 1. Typical latency is 1us.
-	 */
-	sr_test_cond_timeout((sr_read_reg(sr, ERRCONFIG_V1) &
-			     ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT,
-			     timeout);
-
-	if (timeout >= SR_DISABLE_TIMEOUT)
-		dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
-			 __func__);
-
-	/* Disable MCUDisableAcknowledge interrupt & clear pending interrupt */
-	sr_modify_reg(sr, ERRCONFIG_V1, ERRCONFIG_MCUDISACKINTEN,
-			ERRCONFIG_MCUDISACKINTST);
-}
-
-static void sr_v2_disable(struct omap_sr *sr)
-{
-	int timeout = 0;
-
-	/* Enable MCUDisableAcknowledge interrupt */
-	sr_write_reg(sr, IRQENABLE_SET, IRQENABLE_MCUDISABLEACKINT);
-
-	/* SRCONFIG - disable SR */
-	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, 0x0);
-
-	/*
-	 * Disable all other SR interrupts and clear the status
-	 * write to status register ONLY on need basis - only if status
-	 * is set.
-	 */
-	if (sr_read_reg(sr, ERRCONFIG_V2) & ERRCONFIG_VPBOUNDINTST_V2)
-		sr_modify_reg(sr, ERRCONFIG_V2, ERRCONFIG_VPBOUNDINTEN_V2,
-			ERRCONFIG_VPBOUNDINTST_V2);
-	else
-		sr_modify_reg(sr, ERRCONFIG_V2, ERRCONFIG_VPBOUNDINTEN_V2,
-				0x0);
-	sr_write_reg(sr, IRQENABLE_CLR, (IRQENABLE_MCUACCUMINT |
-			IRQENABLE_MCUVALIDINT |
-			IRQENABLE_MCUBOUNDSINT));
-	sr_write_reg(sr, IRQSTATUS, (IRQSTATUS_MCUACCUMINT |
-			IRQSTATUS_MCVALIDINT |
-			IRQSTATUS_MCBOUNDSINT));
-
-	/*
-	 * Wait for SR to be disabled.
-	 * wait until IRQSTATUS.MCUDISACKINTST = 1. Typical latency is 1us.
-	 */
-	sr_test_cond_timeout((sr_read_reg(sr, IRQSTATUS) &
-			     IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT,
-			     timeout);
-
-	if (timeout >= SR_DISABLE_TIMEOUT)
-		dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
-			 __func__);
-
-	/* Disable MCUDisableAcknowledge interrupt & clear pending interrupt */
-	sr_write_reg(sr, IRQENABLE_CLR, IRQENABLE_MCUDISABLEACKINT);
-	sr_write_reg(sr, IRQSTATUS, IRQSTATUS_MCUDISABLEACKINT);
-}
-
-static struct omap_sr_nvalue_table *sr_retrieve_nvalue_row(
-				struct omap_sr *sr, u32 efuse_offs)
-{
-	int i;
-
-	if (!sr->nvalue_table) {
-		dev_warn(&sr->pdev->dev, "%s: Missing ntarget value table\n",
-			 __func__);
-		return NULL;
-	}
-
-	for (i = 0; i < sr->nvalue_count; i++) {
-		if (sr->nvalue_table[i].efuse_offs == efuse_offs)
-			return &sr->nvalue_table[i];
-	}
-
-	return NULL;
-}
-
-/* Public Functions */
-
-/**
- * sr_configure_errgen() - Configures the SmartReflex to perform AVS using the
- *			 error generator module.
- * @sr:			SR module to be configured.
- *
- * This API is to be called from the smartreflex class driver to
- * configure the error generator module inside the smartreflex module.
- * SR settings if using the ERROR module inside Smartreflex.
- * SR CLASS 3 by default uses only the ERROR module where as
- * SR CLASS 2 can choose between ERROR module and MINMAXAVG
- * module. Returns 0 on success and error value in case of failure.
- */
-int sr_configure_errgen(struct omap_sr *sr)
-{
-	u32 sr_config, sr_errconfig, errconfig_offs;
-	u32 vpboundint_en, vpboundint_st;
-	u32 senp_en = 0, senn_en = 0;
-	u8 senp_shift, senn_shift;
-
-	if (!sr) {
-		pr_warn("%s: NULL omap_sr from %pS\n",
-			__func__, (void *)_RET_IP_);
-		return -EINVAL;
-	}
-
-	if (!sr->clk_length)
-		sr_set_clk_length(sr);
-
-	senp_en = sr->senp_mod;
-	senn_en = sr->senn_mod;
-
-	sr_config = (sr->clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |
-		SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN;
-
-	switch (sr->ip_type) {
-	case SR_TYPE_V1:
-		sr_config |= SRCONFIG_DELAYCTRL;
-		senn_shift = SRCONFIG_SENNENABLE_V1_SHIFT;
-		senp_shift = SRCONFIG_SENPENABLE_V1_SHIFT;
-		errconfig_offs = ERRCONFIG_V1;
-		vpboundint_en = ERRCONFIG_VPBOUNDINTEN_V1;
-		vpboundint_st = ERRCONFIG_VPBOUNDINTST_V1;
-		break;
-	case SR_TYPE_V2:
-		senn_shift = SRCONFIG_SENNENABLE_V2_SHIFT;
-		senp_shift = SRCONFIG_SENPENABLE_V2_SHIFT;
-		errconfig_offs = ERRCONFIG_V2;
-		vpboundint_en = ERRCONFIG_VPBOUNDINTEN_V2;
-		vpboundint_st = ERRCONFIG_VPBOUNDINTST_V2;
-		break;
-	default:
-		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	sr_config |= ((senn_en << senn_shift) | (senp_en << senp_shift));
-	sr_write_reg(sr, SRCONFIG, sr_config);
-	sr_errconfig = (sr->err_weight << ERRCONFIG_ERRWEIGHT_SHIFT) |
-		(sr->err_maxlimit << ERRCONFIG_ERRMAXLIMIT_SHIFT) |
-		(sr->err_minlimit <<  ERRCONFIG_ERRMINLIMIT_SHIFT);
-	sr_modify_reg(sr, errconfig_offs, (SR_ERRWEIGHT_MASK |
-		SR_ERRMAXLIMIT_MASK | SR_ERRMINLIMIT_MASK),
-		sr_errconfig);
-
-	/* Enabling the interrupts if the ERROR module is used */
-	sr_modify_reg(sr, errconfig_offs, (vpboundint_en | vpboundint_st),
-		      vpboundint_en);
-
-	return 0;
-}
-
-/**
- * sr_disable_errgen() - Disables SmartReflex AVS module's errgen component
- * @sr:			SR module to be configured.
- *
- * This API is to be called from the smartreflex class driver to
- * disable the error generator module inside the smartreflex module.
- *
- * Returns 0 on success and error value in case of failure.
- */
-int sr_disable_errgen(struct omap_sr *sr)
-{
-	u32 errconfig_offs;
-	u32 vpboundint_en, vpboundint_st;
-
-	if (!sr) {
-		pr_warn("%s: NULL omap_sr from %pS\n",
-			__func__, (void *)_RET_IP_);
-		return -EINVAL;
-	}
-
-	switch (sr->ip_type) {
-	case SR_TYPE_V1:
-		errconfig_offs = ERRCONFIG_V1;
-		vpboundint_en = ERRCONFIG_VPBOUNDINTEN_V1;
-		vpboundint_st = ERRCONFIG_VPBOUNDINTST_V1;
-		break;
-	case SR_TYPE_V2:
-		errconfig_offs = ERRCONFIG_V2;
-		vpboundint_en = ERRCONFIG_VPBOUNDINTEN_V2;
-		vpboundint_st = ERRCONFIG_VPBOUNDINTST_V2;
-		break;
-	default:
-		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	/* Disable the Sensor and errorgen */
-	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN, 0);
-
-	/*
-	 * Disable the interrupts of ERROR module
-	 * NOTE: modify is a read, modify,write - an implicit OCP barrier
-	 * which is required is present here - sequencing is critical
-	 * at this point (after errgen is disabled, vpboundint disable)
-	 */
-	sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);
-
-	return 0;
-}
-
-/**
- * sr_configure_minmax() - Configures the SmartReflex to perform AVS using the
- *			 minmaxavg module.
- * @sr:			SR module to be configured.
- *
- * This API is to be called from the smartreflex class driver to
- * configure the minmaxavg module inside the smartreflex module.
- * SR settings if using the ERROR module inside Smartreflex.
- * SR CLASS 3 by default uses only the ERROR module where as
- * SR CLASS 2 can choose between ERROR module and MINMAXAVG
- * module. Returns 0 on success and error value in case of failure.
- */
-int sr_configure_minmax(struct omap_sr *sr)
-{
-	u32 sr_config, sr_avgwt;
-	u32 senp_en = 0, senn_en = 0;
-	u8 senp_shift, senn_shift;
-
-	if (!sr) {
-		pr_warn("%s: NULL omap_sr from %pS\n",
-			__func__, (void *)_RET_IP_);
-		return -EINVAL;
-	}
-
-	if (!sr->clk_length)
-		sr_set_clk_length(sr);
-
-	senp_en = sr->senp_mod;
-	senn_en = sr->senn_mod;
-
-	sr_config = (sr->clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |
-		SRCONFIG_SENENABLE |
-		(sr->accum_data << SRCONFIG_ACCUMDATA_SHIFT);
-
-	switch (sr->ip_type) {
-	case SR_TYPE_V1:
-		sr_config |= SRCONFIG_DELAYCTRL;
-		senn_shift = SRCONFIG_SENNENABLE_V1_SHIFT;
-		senp_shift = SRCONFIG_SENPENABLE_V1_SHIFT;
-		break;
-	case SR_TYPE_V2:
-		senn_shift = SRCONFIG_SENNENABLE_V2_SHIFT;
-		senp_shift = SRCONFIG_SENPENABLE_V2_SHIFT;
-		break;
-	default:
-		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	sr_config |= ((senn_en << senn_shift) | (senp_en << senp_shift));
-	sr_write_reg(sr, SRCONFIG, sr_config);
-	sr_avgwt = (sr->senp_avgweight << AVGWEIGHT_SENPAVGWEIGHT_SHIFT) |
-		(sr->senn_avgweight << AVGWEIGHT_SENNAVGWEIGHT_SHIFT);
-	sr_write_reg(sr, AVGWEIGHT, sr_avgwt);
-
-	/*
-	 * Enabling the interrupts if MINMAXAVG module is used.
-	 * TODO: check if all the interrupts are mandatory
-	 */
-	switch (sr->ip_type) {
-	case SR_TYPE_V1:
-		sr_modify_reg(sr, ERRCONFIG_V1,
-			(ERRCONFIG_MCUACCUMINTEN | ERRCONFIG_MCUVALIDINTEN |
-			ERRCONFIG_MCUBOUNDINTEN),
-			(ERRCONFIG_MCUACCUMINTEN | ERRCONFIG_MCUACCUMINTST |
-			 ERRCONFIG_MCUVALIDINTEN | ERRCONFIG_MCUVALIDINTST |
-			 ERRCONFIG_MCUBOUNDINTEN | ERRCONFIG_MCUBOUNDINTST));
-		break;
-	case SR_TYPE_V2:
-		sr_write_reg(sr, IRQSTATUS,
-			IRQSTATUS_MCUACCUMINT | IRQSTATUS_MCVALIDINT |
-			IRQSTATUS_MCBOUNDSINT | IRQSTATUS_MCUDISABLEACKINT);
-		sr_write_reg(sr, IRQENABLE_SET,
-			IRQENABLE_MCUACCUMINT | IRQENABLE_MCUVALIDINT |
-			IRQENABLE_MCUBOUNDSINT | IRQENABLE_MCUDISABLEACKINT);
-		break;
-	default:
-		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * sr_enable() - Enables the smartreflex module.
- * @sr:		pointer to which the SR module to be configured belongs to.
- * @volt:	The voltage at which the Voltage domain associated with
- *		the smartreflex module is operating at.
- *		This is required only to program the correct Ntarget value.
- *
- * This API is to be called from the smartreflex class driver to
- * enable a smartreflex module. Returns 0 on success. Returns error
- * value if the voltage passed is wrong or if ntarget value is wrong.
- */
-int sr_enable(struct omap_sr *sr, unsigned long volt)
-{
-	struct omap_volt_data *volt_data;
-	struct omap_sr_nvalue_table *nvalue_row;
-	int ret;
-
-	if (!sr) {
-		pr_warn("%s: NULL omap_sr from %pS\n",
-			__func__, (void *)_RET_IP_);
-		return -EINVAL;
-	}
-
-	volt_data = omap_voltage_get_voltdata(sr->voltdm, volt);
-
-	if (IS_ERR(volt_data)) {
-		dev_warn(&sr->pdev->dev, "%s: Unable to get voltage table for nominal voltage %ld\n",
-			 __func__, volt);
-		return PTR_ERR(volt_data);
-	}
-
-	nvalue_row = sr_retrieve_nvalue_row(sr, volt_data->sr_efuse_offs);
-
-	if (!nvalue_row) {
-		dev_warn(&sr->pdev->dev, "%s: failure getting SR data for this voltage %ld\n",
-			 __func__, volt);
-		return -ENODATA;
-	}
-
-	/* errminlimit is opp dependent and hence linked to voltage */
-	sr->err_minlimit = nvalue_row->errminlimit;
-
-	pm_runtime_get_sync(&sr->pdev->dev);
-
-	/* Check if SR is already enabled. If yes do nothing */
-	if (sr_read_reg(sr, SRCONFIG) & SRCONFIG_SRENABLE)
-		return 0;
-
-	/* Configure SR */
-	ret = sr_class->configure(sr);
-	if (ret)
-		return ret;
-
-	sr_write_reg(sr, NVALUERECIPROCAL, nvalue_row->nvalue);
-
-	/* SRCONFIG - enable SR */
-	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, SRCONFIG_SRENABLE);
-	return 0;
-}
-
-/**
- * sr_disable() - Disables the smartreflex module.
- * @sr:		pointer to which the SR module to be configured belongs to.
- *
- * This API is to be called from the smartreflex class driver to
- * disable a smartreflex module.
- */
-void sr_disable(struct omap_sr *sr)
-{
-	if (!sr) {
-		pr_warn("%s: NULL omap_sr from %pS\n",
-			__func__, (void *)_RET_IP_);
-		return;
-	}
-
-	/* Check if SR clocks are already disabled. If yes do nothing */
-	if (pm_runtime_suspended(&sr->pdev->dev))
-		return;
-
-	/*
-	 * Disable SR if only it is indeed enabled. Else just
-	 * disable the clocks.
-	 */
-	if (sr_read_reg(sr, SRCONFIG) & SRCONFIG_SRENABLE) {
-		switch (sr->ip_type) {
-		case SR_TYPE_V1:
-			sr_v1_disable(sr);
-			break;
-		case SR_TYPE_V2:
-			sr_v2_disable(sr);
-			break;
-		default:
-			dev_err(&sr->pdev->dev, "UNKNOWN IP type %d\n",
-				sr->ip_type);
-		}
-	}
-
-	pm_runtime_put_sync_suspend(&sr->pdev->dev);
-}
-
-/**
- * sr_register_class() - API to register a smartreflex class parameters.
- * @class_data:	The structure containing various sr class specific data.
- *
- * This API is to be called by the smartreflex class driver to register itself
- * with the smartreflex driver during init. Returns 0 on success else the
- * error value.
- */
-int sr_register_class(struct omap_sr_class_data *class_data)
-{
-	struct omap_sr *sr_info;
-
-	if (!class_data) {
-		pr_warn("%s:, Smartreflex class data passed is NULL\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	if (sr_class) {
-		pr_warn("%s: Smartreflex class driver already registered\n",
-			__func__);
-		return -EBUSY;
-	}
-
-	sr_class = class_data;
-
-	/*
-	 * Call into late init to do initializations that require
-	 * both sr driver and sr class driver to be initiallized.
-	 */
-	list_for_each_entry(sr_info, &sr_list, node)
-		sr_late_init(sr_info);
-
-	return 0;
-}
-
-/**
- * omap_sr_enable() -  API to enable SR clocks and to call into the
- *			registered smartreflex class enable API.
- * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
- *
- * This API is to be called from the kernel in order to enable
- * a particular smartreflex module. This API will do the initial
- * configurations to turn on the smartreflex module and in turn call
- * into the registered smartreflex class enable API.
- */
-void omap_sr_enable(struct voltagedomain *voltdm)
-{
-	struct omap_sr *sr = _sr_lookup(voltdm);
-
-	if (IS_ERR(sr)) {
-		pr_warn("%s: omap_sr struct for voltdm not found\n", __func__);
-		return;
-	}
-
-	if (!sr->autocomp_active)
-		return;
-
-	if (!sr_class || !(sr_class->enable) || !(sr_class->configure)) {
-		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",
-			 __func__);
-		return;
-	}
-
-	sr_class->enable(sr);
-}
-
-/**
- * omap_sr_disable() - API to disable SR without resetting the voltage
- *			processor voltage
- * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
- *
- * This API is to be called from the kernel in order to disable
- * a particular smartreflex module. This API will in turn call
- * into the registered smartreflex class disable API. This API will tell
- * the smartreflex class disable not to reset the VP voltage after
- * disabling smartreflex.
- */
-void omap_sr_disable(struct voltagedomain *voltdm)
-{
-	struct omap_sr *sr = _sr_lookup(voltdm);
-
-	if (IS_ERR(sr)) {
-		pr_warn("%s: omap_sr struct for voltdm not found\n", __func__);
-		return;
-	}
-
-	if (!sr->autocomp_active)
-		return;
-
-	if (!sr_class || !(sr_class->disable)) {
-		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",
-			 __func__);
-		return;
-	}
-
-	sr_class->disable(sr, 0);
-}
-
-/**
- * omap_sr_disable_reset_volt() - API to disable SR and reset the
- *				voltage processor voltage
- * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
- *
- * This API is to be called from the kernel in order to disable
- * a particular smartreflex module. This API will in turn call
- * into the registered smartreflex class disable API. This API will tell
- * the smartreflex class disable to reset the VP voltage after
- * disabling smartreflex.
- */
-void omap_sr_disable_reset_volt(struct voltagedomain *voltdm)
-{
-	struct omap_sr *sr = _sr_lookup(voltdm);
-
-	if (IS_ERR(sr)) {
-		pr_warn("%s: omap_sr struct for voltdm not found\n", __func__);
-		return;
-	}
-
-	if (!sr->autocomp_active)
-		return;
-
-	if (!sr_class || !(sr_class->disable)) {
-		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",
-			 __func__);
-		return;
-	}
-
-	sr_class->disable(sr, 1);
-}
-
-/* PM Debug FS entries to enable and disable smartreflex. */
-static int omap_sr_autocomp_show(void *data, u64 *val)
-{
-	struct omap_sr *sr_info = data;
-
-	if (!sr_info) {
-		pr_warn("%s: omap_sr struct not found\n", __func__);
-		return -EINVAL;
-	}
-
-	*val = sr_info->autocomp_active;
-
-	return 0;
-}
-
-static int omap_sr_autocomp_store(void *data, u64 val)
-{
-	struct omap_sr *sr_info = data;
-
-	if (!sr_info) {
-		pr_warn("%s: omap_sr struct not found\n", __func__);
-		return -EINVAL;
-	}
-
-	/* Sanity check */
-	if (val > 1) {
-		pr_warn("%s: Invalid argument %lld\n", __func__, val);
-		return -EINVAL;
-	}
-
-	/* control enable/disable only if there is a delta in value */
-	if (sr_info->autocomp_active != val) {
-		if (!val)
-			sr_stop_vddautocomp(sr_info);
-		else
-			sr_start_vddautocomp(sr_info);
-	}
-
-	return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(pm_sr_fops, omap_sr_autocomp_show,
-			omap_sr_autocomp_store, "%llu\n");
-
-static int omap_sr_probe(struct platform_device *pdev)
-{
-	struct omap_sr *sr_info;
-	struct omap_sr_data *pdata = pdev->dev.platform_data;
-	struct resource *mem, *irq;
-	struct dentry *nvalue_dir;
-	int i, ret = 0;
-
-	sr_info = devm_kzalloc(&pdev->dev, sizeof(struct omap_sr), GFP_KERNEL);
-	if (!sr_info)
-		return -ENOMEM;
-
-	sr_info->name = devm_kzalloc(&pdev->dev,
-				     SMARTREFLEX_NAME_LEN, GFP_KERNEL);
-	if (!sr_info->name)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, sr_info);
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
-		return -EINVAL;
-	}
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sr_info->base = devm_ioremap_resource(&pdev->dev, mem);
-	if (IS_ERR(sr_info->base)) {
-		dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
-		return PTR_ERR(sr_info->base);
-	}
-
-	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-
-	pm_runtime_enable(&pdev->dev);
-	pm_runtime_irq_safe(&pdev->dev);
-
-	snprintf(sr_info->name, SMARTREFLEX_NAME_LEN, "%s", pdata->name);
-
-	sr_info->pdev = pdev;
-	sr_info->srid = pdev->id;
-	sr_info->voltdm = pdata->voltdm;
-	sr_info->nvalue_table = pdata->nvalue_table;
-	sr_info->nvalue_count = pdata->nvalue_count;
-	sr_info->senn_mod = pdata->senn_mod;
-	sr_info->senp_mod = pdata->senp_mod;
-	sr_info->err_weight = pdata->err_weight;
-	sr_info->err_maxlimit = pdata->err_maxlimit;
-	sr_info->accum_data = pdata->accum_data;
-	sr_info->senn_avgweight = pdata->senn_avgweight;
-	sr_info->senp_avgweight = pdata->senp_avgweight;
-	sr_info->autocomp_active = false;
-	sr_info->ip_type = pdata->ip_type;
-
-	if (irq)
-		sr_info->irq = irq->start;
-
-	sr_set_clk_length(sr_info);
-
-	list_add(&sr_info->node, &sr_list);
-
-	ret = pm_runtime_get_sync(&pdev->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(&pdev->dev);
-		goto err_list_del;
-	}
-
-	/*
-	 * Call into late init to do initializations that require
-	 * both sr driver and sr class driver to be initiallized.
-	 */
-	if (sr_class) {
-		ret = sr_late_init(sr_info);
-		if (ret) {
-			pr_warn("%s: Error in SR late init\n", __func__);
-			goto err_list_del;
-		}
-	}
-
-	dev_info(&pdev->dev, "%s: SmartReflex driver initialized\n", __func__);
-	if (!sr_dbg_dir)
-		sr_dbg_dir = debugfs_create_dir("smartreflex", NULL);
-
-	sr_info->dbg_dir = debugfs_create_dir(sr_info->name, sr_dbg_dir);
-
-	debugfs_create_file("autocomp", S_IRUGO | S_IWUSR, sr_info->dbg_dir,
-			    sr_info, &pm_sr_fops);
-	debugfs_create_x32("errweight", S_IRUGO, sr_info->dbg_dir,
-			   &sr_info->err_weight);
-	debugfs_create_x32("errmaxlimit", S_IRUGO, sr_info->dbg_dir,
-			   &sr_info->err_maxlimit);
-
-	nvalue_dir = debugfs_create_dir("nvalue", sr_info->dbg_dir);
-
-	if (sr_info->nvalue_count == 0 || !sr_info->nvalue_table) {
-		dev_warn(&pdev->dev, "%s: %s: No Voltage table for the corresponding vdd. Cannot create debugfs entries for n-values\n",
-			 __func__, sr_info->name);
-
-		ret = -ENODATA;
-		goto err_debugfs;
-	}
-
-	for (i = 0; i < sr_info->nvalue_count; i++) {
-		char name[NVALUE_NAME_LEN + 1];
-
-		snprintf(name, sizeof(name), "volt_%lu",
-				sr_info->nvalue_table[i].volt_nominal);
-		debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir,
-				   &(sr_info->nvalue_table[i].nvalue));
-		snprintf(name, sizeof(name), "errminlimit_%lu",
-			 sr_info->nvalue_table[i].volt_nominal);
-		debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir,
-				   &(sr_info->nvalue_table[i].errminlimit));
-
-	}
-
-	pm_runtime_put_sync(&pdev->dev);
-
-	return ret;
-
-err_debugfs:
-	debugfs_remove_recursive(sr_info->dbg_dir);
-err_list_del:
-	list_del(&sr_info->node);
-
-	pm_runtime_put_sync(&pdev->dev);
-
-	return ret;
-}
-
-static int omap_sr_remove(struct platform_device *pdev)
-{
-	struct omap_sr_data *pdata = pdev->dev.platform_data;
-	struct omap_sr *sr_info;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
-		return -EINVAL;
-	}
-
-	sr_info = _sr_lookup(pdata->voltdm);
-	if (IS_ERR(sr_info)) {
-		dev_warn(&pdev->dev, "%s: omap_sr struct not found\n",
-			__func__);
-		return PTR_ERR(sr_info);
-	}
-
-	if (sr_info->autocomp_active)
-		sr_stop_vddautocomp(sr_info);
-	debugfs_remove_recursive(sr_info->dbg_dir);
-
-	pm_runtime_disable(&pdev->dev);
-	list_del(&sr_info->node);
-	return 0;
-}
-
-static void omap_sr_shutdown(struct platform_device *pdev)
-{
-	struct omap_sr_data *pdata = pdev->dev.platform_data;
-	struct omap_sr *sr_info;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
-		return;
-	}
-
-	sr_info = _sr_lookup(pdata->voltdm);
-	if (IS_ERR(sr_info)) {
-		dev_warn(&pdev->dev, "%s: omap_sr struct not found\n",
-			__func__);
-		return;
-	}
-
-	if (sr_info->autocomp_active)
-		sr_stop_vddautocomp(sr_info);
-
-	return;
-}
-
-static const struct of_device_id omap_sr_match[] = {
-	{ .compatible = "ti,omap3-smartreflex-core", },
-	{ .compatible = "ti,omap3-smartreflex-mpu-iva", },
-	{ .compatible = "ti,omap4-smartreflex-core", },
-	{ .compatible = "ti,omap4-smartreflex-mpu", },
-	{ .compatible = "ti,omap4-smartreflex-iva", },
-	{  },
-};
-MODULE_DEVICE_TABLE(of, omap_sr_match);
-
-static struct platform_driver smartreflex_driver = {
-	.probe		= omap_sr_probe,
-	.remove         = omap_sr_remove,
-	.shutdown	= omap_sr_shutdown,
-	.driver		= {
-		.name	= DRIVER_NAME,
-		.of_match_table	= omap_sr_match,
-	},
-};
-
-static int __init sr_init(void)
-{
-	int ret = 0;
-
-	ret = platform_driver_register(&smartreflex_driver);
-	if (ret) {
-		pr_err("%s: platform driver register failed for SR\n",
-		       __func__);
-		return ret;
-	}
-
-	return 0;
-}
-late_initcall(sr_init);
-
-static void __exit sr_exit(void)
-{
-	platform_driver_unregister(&smartreflex_driver);
-}
-module_exit(sr_exit);
-
-MODULE_DESCRIPTION("OMAP Smartreflex Driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRIVER_NAME);
-MODULE_AUTHOR("Texas Instruments Inc");