kernel_samsung_a53x/drivers/net/wireless/cnss2/power.c

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved. */

#include <linux/clk.h>
#include <linux/delay.h>
#if IS_ENABLED(CONFIG_MSM_QMP)
#include <linux/mailbox/qmp.h>
#endif
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#if IS_ENABLED(CONFIG_QCOM_COMMAND_DB)
#include <soc/qcom/cmd-db.h>
#endif

#include "main.h"
#include "debug.h"
#include "bus.h"

#ifndef CONFIG_SOC_S5E9925
static struct cnss_vreg_cfg cnss_vreg_list[] = {
	{"vdd-wlan-core", 1300000, 1300000, 0, 0, 0},
	{"vdd-wlan-io", 1800000, 1800000, 0, 0, 0},
	{"vdd-wlan-xtal-aon", 0, 0, 0, 0, 0},
	{"vdd-wlan-xtal", 1800000, 1800000, 0, 2, 0},
	{"vdd-wlan", 0, 0, 0, 0, 0},
	{"vdd-wlan-ctrl1", 0, 0, 0, 0, 0},
	{"vdd-wlan-ctrl2", 0, 0, 0, 0, 0},
	{"vdd-wlan-sp2t", 2700000, 2700000, 0, 0, 0},
	{"wlan-ant-switch", 1800000, 1800000, 0, 0, 0},
	{"wlan-soc-swreg", 1200000, 1200000, 0, 0, 0},
	{"vdd-wlan-aon", 950000, 950000, 0, 0, 0},
	{"vdd-wlan-dig", 950000, 952000, 0, 0, 0},
	{"vdd-wlan-rfa1", 1900000, 1900000, 0, 0, 0},
	{"vdd-wlan-rfa2", 1350000, 1350000, 0, 0, 0},
	{"vdd-wlan-en", 0, 0, 0, 10, 0},
};

static struct cnss_clk_cfg cnss_clk_list[] = {
	{"rf_clk", 0, 0},
};
#else
static struct cnss_vreg_cfg cnss_vreg_list[] = {
};

static struct cnss_clk_cfg cnss_clk_list[] = {
};
#endif

#define CNSS_VREG_INFO_SIZE		ARRAY_SIZE(cnss_vreg_list)
#define CNSS_CLK_INFO_SIZE		ARRAY_SIZE(cnss_clk_list)
#define MAX_PROP_SIZE			32

#define BOOTSTRAP_GPIO			"qcom,enable-bootstrap-gpio"
#define BOOTSTRAP_ACTIVE		"bootstrap_active"
#define WLAN_EN_GPIO			"wlan-en-gpio"
#define BT_EN_GPIO			"qcom,bt-en-gpio"
#define XO_CLK_GPIO			"qcom,xo-clk-gpio"
#define WLAN_EN_ACTIVE			"wlan_en_active"
#define WLAN_EN_SLEEP			"wlan_en_sleep"
#define WLAN_SW_CTRL_GPIO		"wlan-clk-req-gpio"

#define BOOTSTRAP_DELAY			1000
#define WLAN_ENABLE_DELAY		1000

#define TCS_CMD_DATA_ADDR_OFFSET	0x4
#define TCS_OFFSET			0xC8
#define TCS_CMD_OFFSET			0x10
#define MAX_TCS_NUM			8
#define MAX_TCS_CMD_NUM			5
#define BT_CXMX_VOLTAGE_MV		950
#define CNSS_MBOX_MSG_MAX_LEN 64
#define CNSS_MBOX_TIMEOUT_MS 1000

/**
 * enum cnss_vreg_param: Voltage regulator TCS param
 * @CNSS_VREG_VOLTAGE: Provides voltage level to be configured in TCS
 * @CNSS_VREG_MODE: Regulator mode
 * @CNSS_VREG_TCS_ENABLE: Set Voltage regulator enable config in TCS
 */
enum cnss_vreg_param {
	CNSS_VREG_VOLTAGE,
	CNSS_VREG_MODE,
	CNSS_VREG_ENABLE,
};

/**
 * enum cnss_tcs_seq: TCS sequence ID for trigger
 * CNSS_TCS_UP_SEQ: TCS Sequence based on up trigger / Wake TCS
 * CNSS_TCS_DOWN_SEQ: TCS Sequence based on down trigger / Sleep TCS
 * CNSS_TCS_ALL_SEQ: Update for both up and down triggers
 */
enum cnss_tcs_seq {
	CNSS_TCS_UP_SEQ,
	CNSS_TCS_DOWN_SEQ,
	CNSS_TCS_ALL_SEQ,
};


static int cnss_get_vreg_single(struct cnss_plat_data *plat_priv,
				struct cnss_vreg_info *vreg)
{
	int ret = 0;
	struct device *dev;
	struct regulator *reg;
	const __be32 *prop;
	char prop_name[MAX_PROP_SIZE] = {0};
	int len;

	dev = &plat_priv->plat_dev->dev;
	reg = devm_regulator_get_optional(dev, vreg->cfg.name);
	if (IS_ERR(reg)) {
		ret = PTR_ERR(reg);
		if (ret == -ENODEV)
			return ret;
		else if (ret == -EPROBE_DEFER)
			cnss_pr_info("EPROBE_DEFER for regulator: %s\n",
				     vreg->cfg.name);
		else
			cnss_pr_err("Failed to get regulator %s, err = %d\n",
				    vreg->cfg.name, ret);
		return ret;
	}

	vreg->reg = reg;

	snprintf(prop_name, MAX_PROP_SIZE, "qcom,%s-config",
		 vreg->cfg.name);

	prop = of_get_property(dev->of_node, prop_name, &len);
	if (!prop || len != (5 * sizeof(__be32))) {
		cnss_pr_dbg("Property %s %s, use default\n", prop_name,
			    prop ? "invalid format" : "doesn't exist");
	} else {
		vreg->cfg.min_uv = be32_to_cpup(&prop[0]);
		vreg->cfg.max_uv = be32_to_cpup(&prop[1]);
		vreg->cfg.load_ua = be32_to_cpup(&prop[2]);
		vreg->cfg.delay_us = be32_to_cpup(&prop[3]);
		vreg->cfg.need_unvote = be32_to_cpup(&prop[4]);
	}

	cnss_pr_dbg("Got regulator: %s, min_uv: %u, max_uv: %u, load_ua: %u, delay_us: %u, need_unvote: %u\n",
		    vreg->cfg.name, vreg->cfg.min_uv,
		    vreg->cfg.max_uv, vreg->cfg.load_ua,
		    vreg->cfg.delay_us, vreg->cfg.need_unvote);

	return 0;
}

static void cnss_put_vreg_single(struct cnss_plat_data *plat_priv,
				 struct cnss_vreg_info *vreg)
{
	struct device *dev = &plat_priv->plat_dev->dev;

	cnss_pr_dbg("Put regulator: %s\n", vreg->cfg.name);
	devm_regulator_put(vreg->reg);
	devm_kfree(dev, vreg);
}

static int cnss_vreg_on_single(struct cnss_vreg_info *vreg)
{
	int ret = 0;

	if (vreg->enabled) {
		cnss_pr_dbg("Regulator %s is already enabled\n",
			    vreg->cfg.name);
		return 0;
	}

	cnss_pr_dbg("Regulator %s is being enabled\n", vreg->cfg.name);

	if (vreg->cfg.min_uv != 0 && vreg->cfg.max_uv != 0) {
		ret = regulator_set_voltage(vreg->reg,
					    vreg->cfg.min_uv,
					    vreg->cfg.max_uv);

		if (ret) {
			cnss_pr_err("Failed to set voltage for regulator %s, min_uv: %u, max_uv: %u, err = %d\n",
				    vreg->cfg.name, vreg->cfg.min_uv,
				    vreg->cfg.max_uv, ret);
			goto out;
		}
	}

	if (vreg->cfg.load_ua) {
		ret = regulator_set_load(vreg->reg,
					 vreg->cfg.load_ua);

		if (ret < 0) {
			cnss_pr_err("Failed to set load for regulator %s, load: %u, err = %d\n",
				    vreg->cfg.name, vreg->cfg.load_ua,
				    ret);
			goto out;
		}
	}

	if (vreg->cfg.delay_us)
		udelay(vreg->cfg.delay_us);

	ret = regulator_enable(vreg->reg);
	if (ret) {
		cnss_pr_err("Failed to enable regulator %s, err = %d\n",
			    vreg->cfg.name, ret);
		goto out;
	}
	vreg->enabled = true;

out:
	return ret;
}

static int cnss_vreg_unvote_single(struct cnss_vreg_info *vreg)
{
	int ret = 0;

	if (!vreg->enabled) {
		cnss_pr_dbg("Regulator %s is already disabled\n",
			    vreg->cfg.name);
		return 0;
	}

	cnss_pr_dbg("Removing vote for Regulator %s\n", vreg->cfg.name);

	if (vreg->cfg.load_ua) {
		ret = regulator_set_load(vreg->reg, 0);
		if (ret < 0)
			cnss_pr_err("Failed to set load for regulator %s, err = %d\n",
				    vreg->cfg.name, ret);
	}

	if (vreg->cfg.min_uv != 0 && vreg->cfg.max_uv != 0) {
		ret = regulator_set_voltage(vreg->reg, 0,
					    vreg->cfg.max_uv);
		if (ret)
			cnss_pr_err("Failed to set voltage for regulator %s, err = %d\n",
				    vreg->cfg.name, ret);
	}

	return ret;
}

static int cnss_vreg_off_single(struct cnss_vreg_info *vreg)
{
	int ret = 0;

	if (!vreg->enabled) {
		cnss_pr_dbg("Regulator %s is already disabled\n",
			    vreg->cfg.name);
		return 0;
	}

	cnss_pr_dbg("Regulator %s is being disabled\n",
		    vreg->cfg.name);

	ret = regulator_disable(vreg->reg);
	if (ret)
		cnss_pr_err("Failed to disable regulator %s, err = %d\n",
			    vreg->cfg.name, ret);

	if (vreg->cfg.load_ua) {
		ret = regulator_set_load(vreg->reg, 0);
		if (ret < 0)
			cnss_pr_err("Failed to set load for regulator %s, err = %d\n",
				    vreg->cfg.name, ret);
	}

	if (vreg->cfg.min_uv != 0 && vreg->cfg.max_uv != 0) {
		ret = regulator_set_voltage(vreg->reg, 0,
					    vreg->cfg.max_uv);
		if (ret)
			cnss_pr_err("Failed to set voltage for regulator %s, err = %d\n",
				    vreg->cfg.name, ret);
	}
	vreg->enabled = false;

	return ret;
}

static struct cnss_vreg_cfg *get_vreg_list(u32 *vreg_list_size,
					   enum cnss_vreg_type type)
{
	switch (type) {
	case CNSS_VREG_PRIM:
		*vreg_list_size = CNSS_VREG_INFO_SIZE;
		return cnss_vreg_list;
	default:
		cnss_pr_err("Unsupported vreg type 0x%x\n", type);
		*vreg_list_size = 0;
		return NULL;
	}
}

static int cnss_get_vreg(struct cnss_plat_data *plat_priv,
			 struct list_head *vreg_list,
			 struct cnss_vreg_cfg *vreg_cfg,
			 u32 vreg_list_size)
{
	int ret = 0;
	int i;
	struct cnss_vreg_info *vreg;
	struct device *dev = &plat_priv->plat_dev->dev;

	if (!list_empty(vreg_list)) {
		cnss_pr_dbg("Vregs have already been updated\n");
		return 0;
	}

	for (i = 0; i < vreg_list_size; i++) {
		vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
		if (!vreg)
			return -ENOMEM;

		memcpy(&vreg->cfg, &vreg_cfg[i], sizeof(vreg->cfg));
		ret = cnss_get_vreg_single(plat_priv, vreg);
		if (ret != 0) {
			if (ret == -ENODEV) {
				devm_kfree(dev, vreg);
				continue;
			} else {
				devm_kfree(dev, vreg);
				return ret;
			}
		}
		list_add_tail(&vreg->list, vreg_list);
	}

	return 0;
}

static void cnss_put_vreg(struct cnss_plat_data *plat_priv,
			  struct list_head *vreg_list)
{
	struct cnss_vreg_info *vreg;

	while (!list_empty(vreg_list)) {
		vreg = list_first_entry(vreg_list,
					struct cnss_vreg_info, list);
		list_del(&vreg->list);
		if (IS_ERR_OR_NULL(vreg->reg))
			continue;
		cnss_put_vreg_single(plat_priv, vreg);
	}
}

static int cnss_vreg_on(struct cnss_plat_data *plat_priv,
			struct list_head *vreg_list)
{
	struct cnss_vreg_info *vreg;
	int ret = 0;

	list_for_each_entry(vreg, vreg_list, list) {
		if (IS_ERR_OR_NULL(vreg->reg))
			continue;
		ret = cnss_vreg_on_single(vreg);
		if (ret)
			break;
	}

	if (!ret)
		return 0;

	list_for_each_entry_continue_reverse(vreg, vreg_list, list) {
		if (IS_ERR_OR_NULL(vreg->reg) || !vreg->enabled)
			continue;

		cnss_vreg_off_single(vreg);
	}

	return ret;
}

static int cnss_vreg_off(struct cnss_plat_data *plat_priv,
			 struct list_head *vreg_list)
{
	struct cnss_vreg_info *vreg;

	list_for_each_entry_reverse(vreg, vreg_list, list) {
		if (IS_ERR_OR_NULL(vreg->reg))
			continue;

		cnss_vreg_off_single(vreg);
	}

	return 0;
}

static int cnss_vreg_unvote(struct cnss_plat_data *plat_priv,
			    struct list_head *vreg_list)
{
	struct cnss_vreg_info *vreg;

	list_for_each_entry_reverse(vreg, vreg_list, list) {
		if (IS_ERR_OR_NULL(vreg->reg))
			continue;

		if (vreg->cfg.need_unvote)
			cnss_vreg_unvote_single(vreg);
	}

	return 0;
}

int cnss_get_vreg_type(struct cnss_plat_data *plat_priv,
		       enum cnss_vreg_type type)
{
	struct cnss_vreg_cfg *vreg_cfg;
	u32 vreg_list_size = 0;
	int ret = 0;

	vreg_cfg = get_vreg_list(&vreg_list_size, type);
	if (!vreg_cfg)
		return -EINVAL;

	switch (type) {
	case CNSS_VREG_PRIM:
		ret = cnss_get_vreg(plat_priv, &plat_priv->vreg_list,
				    vreg_cfg, vreg_list_size);
		break;
	default:
		cnss_pr_err("Unsupported vreg type 0x%x\n", type);
		return -EINVAL;
	}

	return ret;
}

void cnss_put_vreg_type(struct cnss_plat_data *plat_priv,
			enum cnss_vreg_type type)
{
	switch (type) {
	case CNSS_VREG_PRIM:
		cnss_put_vreg(plat_priv, &plat_priv->vreg_list);
		break;
	default:
		return;
	}
}

int cnss_vreg_on_type(struct cnss_plat_data *plat_priv,
		      enum cnss_vreg_type type)
{
	int ret = 0;

	switch (type) {
	case CNSS_VREG_PRIM:
		ret = cnss_vreg_on(plat_priv, &plat_priv->vreg_list);
		break;
	default:
		cnss_pr_err("Unsupported vreg type 0x%x\n", type);
		return -EINVAL;
	}

	return ret;
}

int cnss_vreg_off_type(struct cnss_plat_data *plat_priv,
		       enum cnss_vreg_type type)
{
	int ret = 0;

	switch (type) {
	case CNSS_VREG_PRIM:
		ret = cnss_vreg_off(plat_priv, &plat_priv->vreg_list);
		break;
	default:
		cnss_pr_err("Unsupported vreg type 0x%x\n", type);
		return -EINVAL;
	}

	return ret;
}

int cnss_vreg_unvote_type(struct cnss_plat_data *plat_priv,
			  enum cnss_vreg_type type)
{
	int ret = 0;

	switch (type) {
	case CNSS_VREG_PRIM:
		ret = cnss_vreg_unvote(plat_priv, &plat_priv->vreg_list);
		break;
	default:
		cnss_pr_err("Unsupported vreg type 0x%x\n", type);
		return -EINVAL;
	}

	return ret;
}

static int cnss_get_clk_single(struct cnss_plat_data *plat_priv,
			       struct cnss_clk_info *clk_info)
{
	struct device *dev = &plat_priv->plat_dev->dev;
	struct clk *clk;
	int ret;

	clk = devm_clk_get(dev, clk_info->cfg.name);
	if (IS_ERR(clk)) {
		ret = PTR_ERR(clk);
		if (clk_info->cfg.required)
			cnss_pr_err("Failed to get clock %s, err = %d\n",
				    clk_info->cfg.name, ret);
		else
			cnss_pr_dbg("Failed to get optional clock %s, err = %d\n",
				    clk_info->cfg.name, ret);
		return ret;
	}

	clk_info->clk = clk;
	cnss_pr_dbg("Got clock: %s, freq: %u\n",
		    clk_info->cfg.name, clk_info->cfg.freq);

	return 0;
}

static void cnss_put_clk_single(struct cnss_plat_data *plat_priv,
				struct cnss_clk_info *clk_info)
{
	struct device *dev = &plat_priv->plat_dev->dev;

	cnss_pr_dbg("Put clock: %s\n", clk_info->cfg.name);
	devm_clk_put(dev, clk_info->clk);
}

static int cnss_clk_on_single(struct cnss_clk_info *clk_info)
{
	int ret;

	if (clk_info->enabled) {
		cnss_pr_dbg("Clock %s is already enabled\n",
			    clk_info->cfg.name);
		return 0;
	}

	cnss_pr_dbg("Clock %s is being enabled\n", clk_info->cfg.name);

	if (clk_info->cfg.freq) {
		ret = clk_set_rate(clk_info->clk, clk_info->cfg.freq);
		if (ret) {
			cnss_pr_err("Failed to set frequency %u for clock %s, err = %d\n",
				    clk_info->cfg.freq, clk_info->cfg.name,
				    ret);
			return ret;
		}
	}

	ret = clk_prepare_enable(clk_info->clk);
	if (ret) {
		cnss_pr_err("Failed to enable clock %s, err = %d\n",
			    clk_info->cfg.name, ret);
		return ret;
	}

	clk_info->enabled = true;

	return 0;
}

static int cnss_clk_off_single(struct cnss_clk_info *clk_info)
{
	if (!clk_info->enabled) {
		cnss_pr_dbg("Clock %s is already disabled\n",
			    clk_info->cfg.name);
		return 0;
	}

	cnss_pr_dbg("Clock %s is being disabled\n", clk_info->cfg.name);

	clk_disable_unprepare(clk_info->clk);
	clk_info->enabled = false;

	return 0;
}

int cnss_get_clk(struct cnss_plat_data *plat_priv)
{
	struct device *dev;
	struct list_head *clk_list;
	struct cnss_clk_info *clk_info;
	int ret, i;

	if (!plat_priv)
		return -ENODEV;

	dev = &plat_priv->plat_dev->dev;
	clk_list = &plat_priv->clk_list;

	if (!list_empty(clk_list)) {
		cnss_pr_dbg("Clocks have already been updated\n");
		return 0;
	}

	for (i = 0; i < CNSS_CLK_INFO_SIZE; i++) {
		clk_info = devm_kzalloc(dev, sizeof(*clk_info), GFP_KERNEL);
		if (!clk_info) {
			ret = -ENOMEM;
			goto cleanup;
		}

		memcpy(&clk_info->cfg, &cnss_clk_list[i],
		       sizeof(clk_info->cfg));
		ret = cnss_get_clk_single(plat_priv, clk_info);
		if (ret != 0) {
			if (clk_info->cfg.required) {
				devm_kfree(dev, clk_info);
				goto cleanup;
			} else {
				devm_kfree(dev, clk_info);
				continue;
			}
		}
		list_add_tail(&clk_info->list, clk_list);
	}

	return 0;

cleanup:
	while (!list_empty(clk_list)) {
		clk_info = list_first_entry(clk_list, struct cnss_clk_info,
					    list);
		list_del(&clk_info->list);
		if (IS_ERR_OR_NULL(clk_info->clk))
			continue;
		cnss_put_clk_single(plat_priv, clk_info);
		devm_kfree(dev, clk_info);
	}

	return ret;
}

void cnss_put_clk(struct cnss_plat_data *plat_priv)
{
	struct device *dev;
	struct list_head *clk_list;
	struct cnss_clk_info *clk_info;

	if (!plat_priv)
		return;

	dev = &plat_priv->plat_dev->dev;
	clk_list = &plat_priv->clk_list;

	while (!list_empty(clk_list)) {
		clk_info = list_first_entry(clk_list, struct cnss_clk_info,
					    list);
		list_del(&clk_info->list);
		if (IS_ERR_OR_NULL(clk_info->clk))
			continue;
		cnss_put_clk_single(plat_priv, clk_info);
		devm_kfree(dev, clk_info);
	}
}

static int cnss_clk_on(struct cnss_plat_data *plat_priv,
		       struct list_head *clk_list)
{
	struct cnss_clk_info *clk_info;
	int ret = 0;

	list_for_each_entry(clk_info, clk_list, list) {
		if (IS_ERR_OR_NULL(clk_info->clk))
			continue;
		ret = cnss_clk_on_single(clk_info);
		if (ret)
			break;
	}

	if (!ret)
		return 0;

	list_for_each_entry_continue_reverse(clk_info, clk_list, list) {
		if (IS_ERR_OR_NULL(clk_info->clk))
			continue;

		cnss_clk_off_single(clk_info);
	}

	return ret;
}

static int cnss_clk_off(struct cnss_plat_data *plat_priv,
			struct list_head *clk_list)
{
	struct cnss_clk_info *clk_info;

	list_for_each_entry_reverse(clk_info, clk_list, list) {
		if (IS_ERR_OR_NULL(clk_info->clk))
			continue;

		cnss_clk_off_single(clk_info);
	}

	return 0;
}

int cnss_get_pinctrl(struct cnss_plat_data *plat_priv)
{
	int ret = 0;
	struct device *dev;
	struct cnss_pinctrl_info *pinctrl_info;

	dev = &plat_priv->plat_dev->dev;
	pinctrl_info = &plat_priv->pinctrl_info;

	pinctrl_info->pinctrl = devm_pinctrl_get(dev);
	if (IS_ERR_OR_NULL(pinctrl_info->pinctrl)) {
		ret = PTR_ERR(pinctrl_info->pinctrl);
		cnss_pr_err("Failed to get pinctrl, err = %d\n", ret);
		goto out;
	}

	if (of_find_property(dev->of_node, BOOTSTRAP_GPIO, NULL)) {
		pinctrl_info->bootstrap_active =
			pinctrl_lookup_state(pinctrl_info->pinctrl,
					     BOOTSTRAP_ACTIVE);
		if (IS_ERR_OR_NULL(pinctrl_info->bootstrap_active)) {
			ret = PTR_ERR(pinctrl_info->bootstrap_active);
			cnss_pr_err("Failed to get bootstrap active state, err = %d\n",
				    ret);
			goto out;
		}
	}

	if (of_find_property(dev->of_node, WLAN_EN_GPIO, NULL)) {
		pinctrl_info->wlan_en_active =
			pinctrl_lookup_state(pinctrl_info->pinctrl,
					     WLAN_EN_ACTIVE);
		if (IS_ERR_OR_NULL(pinctrl_info->wlan_en_active)) {
			ret = PTR_ERR(pinctrl_info->wlan_en_active);
			cnss_pr_err("Failed to get wlan_en active state, err = %d\n",
				    ret);
			goto out;
		}

		pinctrl_info->wlan_en_sleep =
			pinctrl_lookup_state(pinctrl_info->pinctrl,
					     WLAN_EN_SLEEP);
		if (IS_ERR_OR_NULL(pinctrl_info->wlan_en_sleep)) {
			ret = PTR_ERR(pinctrl_info->wlan_en_sleep);
			cnss_pr_err("Failed to get wlan_en sleep state, err = %d\n",
				    ret);
			goto out;
		}
	}

	/* Added for QCA6490 PMU delayed WLAN_EN_GPIO */
	if (of_find_property(dev->of_node, BT_EN_GPIO, NULL)) {
		pinctrl_info->bt_en_gpio = of_get_named_gpio(dev->of_node,
							     BT_EN_GPIO, 0);
		cnss_pr_dbg("BT GPIO: %d\n", pinctrl_info->bt_en_gpio);
	} else {
		pinctrl_info->bt_en_gpio = -EINVAL;
	}

	/* Added for QCA6490 to minimize XO CLK selection leakage prevention */
	if (of_find_property(dev->of_node, XO_CLK_GPIO, NULL)) {
		pinctrl_info->xo_clk_gpio = of_get_named_gpio(dev->of_node,
							      XO_CLK_GPIO, 0);
		cnss_pr_dbg("QCA6490 XO_CLK GPIO: %d\n",
			    pinctrl_info->xo_clk_gpio);
		cnss_set_feature_list(plat_priv, BOOTSTRAP_CLOCK_SELECT_V01);
	} else {
		pinctrl_info->xo_clk_gpio = -EINVAL;
	}
	return 0;
out:
	return ret;
}

#define CNSS_XO_CLK_RETRY_COUNT_MAX 5
static void cnss_set_xo_clk_gpio_state(struct cnss_plat_data *plat_priv,
				       bool enable)
{
	int xo_clk_gpio = plat_priv->pinctrl_info.xo_clk_gpio, retry = 0, ret;

	if (xo_clk_gpio < 0 || plat_priv->device_id != QCA6490_DEVICE_ID)
		return;

retry_gpio_req:
	ret = gpio_request(xo_clk_gpio, "XO_CLK_GPIO");
	if (ret) {
		if (retry++ < CNSS_XO_CLK_RETRY_COUNT_MAX) {
			/* wait for ~(10 - 20) ms */
			usleep_range(10000, 20000);
			goto retry_gpio_req;
		}
	}

	if (ret) {
		cnss_pr_err("QCA6490 XO CLK Gpio request failed\n");
		return;
	}

	if (enable) {
		gpio_direction_output(xo_clk_gpio, 1);
		/*XO CLK must be asserted for some time before WLAN_EN */
		usleep_range(100, 200);
	} else {
		/* Assert XO CLK ~(2-5)ms before off for valid latch in HW */
		usleep_range(2000, 5000);
		gpio_direction_output(xo_clk_gpio, 0);
	}

	gpio_free(xo_clk_gpio);
}

static int cnss_select_pinctrl_state(struct cnss_plat_data *plat_priv,
				     bool state)
{
	int ret = 0;
	struct cnss_pinctrl_info *pinctrl_info;

	if (!plat_priv) {
		cnss_pr_err("plat_priv is NULL!\n");
		ret = -ENODEV;
		goto out;
	}

	pinctrl_info = &plat_priv->pinctrl_info;

	if (state) {
		if (!IS_ERR_OR_NULL(pinctrl_info->bootstrap_active)) {
			ret = pinctrl_select_state
				(pinctrl_info->pinctrl,
				 pinctrl_info->bootstrap_active);
			if (ret) {
				cnss_pr_err("Failed to select bootstrap active state, err = %d\n",
					    ret);
				goto out;
			}
			udelay(BOOTSTRAP_DELAY);
		}
		cnss_set_xo_clk_gpio_state(plat_priv, true);
		if (!IS_ERR_OR_NULL(pinctrl_info->wlan_en_active)) {
			ret = pinctrl_select_state
				(pinctrl_info->pinctrl,
				 pinctrl_info->wlan_en_active);
			if (ret) {
				cnss_pr_err("Failed to select wlan_en active state, err = %d\n",
					    ret);
				goto out;
			}
			udelay(WLAN_ENABLE_DELAY);
		}
		cnss_set_xo_clk_gpio_state(plat_priv, false);
	} else {
		if (!IS_ERR_OR_NULL(pinctrl_info->wlan_en_sleep)) {
			ret = pinctrl_select_state(pinctrl_info->pinctrl,
						   pinctrl_info->wlan_en_sleep);
			if (ret) {
				cnss_pr_err("Failed to select wlan_en sleep state, err = %d\n",
					    ret);
				goto out;
			}
		}
	}

	cnss_pr_dbg("%s WLAN_EN GPIO successfully\n",
		    state ? "Assert" : "De-assert");

	return 0;
out:
	return ret;
}

/**
 * cnss_select_pinctrl_enable - select WLAN_GPIO for Active pinctrl status
 * @plat_priv: Platform private data structure pointer
 *
 * For QCA6490, PMU requires minimum 100ms delay between BT_EN_GPIO off and
 * WLAN_EN_GPIO on. This is done to avoid power up issues.
 *
 * Return: Status of pinctrl select operation. 0 - Success.
 */
static int cnss_select_pinctrl_enable(struct cnss_plat_data *plat_priv)
{
	int ret = 0, bt_en_gpio = plat_priv->pinctrl_info.bt_en_gpio;
	u8 wlan_en_state = 0;

	if (bt_en_gpio < 0 || plat_priv->device_id != QCA6490_DEVICE_ID)
		goto set_wlan_en;

	if (gpio_get_value(bt_en_gpio)) {
		cnss_pr_dbg("BT_EN_GPIO State: On\n");
		ret = cnss_select_pinctrl_state(plat_priv, true);
		if (!ret)
			return ret;
		wlan_en_state = 1;
	}
	if (!gpio_get_value(bt_en_gpio)) {
		cnss_pr_dbg("BT_EN_GPIO State: Off. Delay WLAN_GPIO enable\n");
		/* check for BT_EN_GPIO down race during above operation */
		if (wlan_en_state) {
			cnss_pr_dbg("Reset WLAN_EN as BT got turned off during enable\n");
			cnss_select_pinctrl_state(plat_priv, false);
			wlan_en_state = 0;
		}
		/* 100 ms delay for BT_EN and WLAN_EN QCA6490 PMU sequencing */
		msleep(100);
	}
set_wlan_en:
	if (!wlan_en_state)
		ret = cnss_select_pinctrl_state(plat_priv, true);
	return ret;
}

#ifdef CONFIG_SOC_S5E9925
static irqreturn_t cnss_sw_ctrl_wake_handler(int irq, void* plat_priv)
{
  cnss_pr_err("clk_req_irq triggered");
  return IRQ_HANDLED;
}

int cnss_init_sw_ctrl_gpio(struct cnss_plat_data *plat_priv)
{
	int ret = 0;
	struct device *dev = &plat_priv->plat_dev->dev;
	struct irq_desc *desc;

	plat_priv->clk_req_gpio = of_get_named_gpio(dev->of_node,
							WLAN_SW_CTRL_GPIO, 0);
	if (plat_priv->clk_req_gpio < 0)
		goto out;

	cnss_pr_err("Get CLK_REQ GPIO (%d) from device node\n",
				plat_priv->clk_req_gpio);

	ret = gpio_request(plat_priv->clk_req_gpio, WLAN_SW_CTRL_GPIO);
	if (ret) {
		cnss_pr_err("Failed to request SW_CTRL GPIO, err = %d\n",
				ret);
		goto out;
	}

	ret = gpio_direction_input(plat_priv->clk_req_gpio);
	if (ret) {
		cnss_pr_err("Failed to set GPIO direction SW_CTRL GPIO, err = %d\n",
				ret);
		goto free_gpio;
	}

	plat_priv->clk_req_irq = 0;
	plat_priv->clk_req_irq = gpio_to_irq(plat_priv->clk_req_gpio);
	cnss_pr_err("Get CLK_REQ IRQ (%d)\n",
					plat_priv->clk_req_irq);

	if (plat_priv->clk_req_irq < 0)
		goto free_gpio;

	ret = request_irq(plat_priv->clk_req_irq, cnss_sw_ctrl_wake_handler,
				  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
				  "wlan_clk_req_irq", plat_priv);
	if (ret) {
		cnss_pr_err("Failed to request WLAN_CLK req IRQ, err = %d\n", ret);
		goto free_gpio;
	}
	desc = irq_to_desc(plat_priv->clk_req_irq);
	if (desc && desc->depth > 0)
		enable_irq(plat_priv->clk_req_irq);

	acpm_init_eint_clk_req(plat_priv->clk_req_gpio);

	return 0;

free_gpio:
	gpio_free(plat_priv->clk_req_gpio);
out:
	return ret;

}
#endif

int cnss_power_on_device(struct cnss_plat_data *plat_priv)
{
	int ret = 0;

	if (plat_priv->powered_on) {
		cnss_pr_dbg("Already powered up");
		return 0;
	}

#ifdef CONFIG_SOC_S5E9925
	cnss_pr_err("### enable wlan_vdd\n");
	ret = regulator_enable(plat_priv->wlan_vdd);
	if (ret) {
		cnss_pr_err("Failed to enable wlan_vdd\n");
		goto out;
	}
#endif
	udelay(WLAN_ENABLE_DELAY);

	ret = cnss_vreg_on_type(plat_priv, CNSS_VREG_PRIM);
	if (ret) {
		cnss_pr_err("Failed to turn on vreg, err = %d\n", ret);
		goto out;
	}

	ret = cnss_clk_on(plat_priv, &plat_priv->clk_list);
	if (ret) {
		cnss_pr_err("Failed to turn on clocks, err = %d\n", ret);
		goto vreg_off;
	}

	ret = cnss_select_pinctrl_enable(plat_priv);
	if (ret) {
		cnss_pr_err("Failed to select pinctrl state, err = %d\n", ret);
		goto clk_off;
	}

	plat_priv->powered_on = true;

	return 0;

clk_off:
	cnss_clk_off(plat_priv, &plat_priv->clk_list);
vreg_off:
	cnss_vreg_off_type(plat_priv, CNSS_VREG_PRIM);
out:
	return ret;
}

void cnss_power_off_device(struct cnss_plat_data *plat_priv)
{
	if (!plat_priv->powered_on) {
		cnss_pr_dbg("Already powered down");
		return;
	}

	cnss_select_pinctrl_state(plat_priv, false);
	cnss_clk_off(plat_priv, &plat_priv->clk_list);
#ifdef CONFIG_SOC_S5E9925
	regulator_disable(plat_priv->wlan_vdd);
#endif
	cnss_vreg_off_type(plat_priv, CNSS_VREG_PRIM);
	plat_priv->powered_on = false;
}

bool cnss_is_device_powered_on(struct cnss_plat_data *plat_priv)
{
	return plat_priv->powered_on;
}

void cnss_set_pin_connect_status(struct cnss_plat_data *plat_priv)
{
	unsigned long pin_status = 0;

	set_bit(CNSS_WLAN_EN, &pin_status);
	set_bit(CNSS_PCIE_TXN, &pin_status);
	set_bit(CNSS_PCIE_TXP, &pin_status);
	set_bit(CNSS_PCIE_RXN, &pin_status);
	set_bit(CNSS_PCIE_RXP, &pin_status);
	set_bit(CNSS_PCIE_REFCLKN, &pin_status);
	set_bit(CNSS_PCIE_REFCLKP, &pin_status);
	set_bit(CNSS_PCIE_RST, &pin_status);

	plat_priv->pin_result.host_pin_result = pin_status;
}

#if IS_ENABLED(CONFIG_QCOM_COMMAND_DB)
static int cnss_cmd_db_ready(struct cnss_plat_data *plat_priv)
{
	return cmd_db_ready();
}

static u32 cnss_cmd_db_read_addr(struct cnss_plat_data *plat_priv,
				 const char *res_id)
{
	return cmd_db_read_addr(res_id);
}
#else
static int cnss_cmd_db_ready(struct cnss_plat_data *plat_priv)
{
	return -EOPNOTSUPP;
}

static u32 cnss_cmd_db_read_addr(struct cnss_plat_data *plat_priv,
				 const char *res_id)
{
	return 0;
}
#endif

int cnss_get_tcs_info(struct cnss_plat_data *plat_priv)
{
	struct platform_device *plat_dev = plat_priv->plat_dev;
	struct resource *res;
	resource_size_t addr_len;
	void __iomem *tcs_cmd_base_addr;
	int ret = 0;

	res = platform_get_resource_byname(plat_dev, IORESOURCE_MEM, "tcs_cmd");
	if (!res) {
		cnss_pr_dbg("TCS CMD address is not present for CPR\n");
		goto out;
	}

	plat_priv->tcs_info.cmd_base_addr = res->start;
	addr_len = resource_size(res);
	cnss_pr_dbg("TCS CMD base address is %pa with length %pa\n",
		    &plat_priv->tcs_info.cmd_base_addr, &addr_len);

	tcs_cmd_base_addr = devm_ioremap(&plat_dev->dev, res->start, addr_len);
	if (!tcs_cmd_base_addr) {
		ret = -EINVAL;
		cnss_pr_err("Failed to map TCS CMD address, err = %d\n",
			    ret);
		goto out;
	}
	plat_priv->tcs_info.cmd_base_addr_io = tcs_cmd_base_addr;
	return 0;
out:
	return ret;
}

int cnss_get_cpr_info(struct cnss_plat_data *plat_priv)
{
	struct platform_device *plat_dev = plat_priv->plat_dev;
	struct cnss_cpr_info *cpr_info = &plat_priv->cpr_info;
	const char *cmd_db_name;
	u32 cpr_pmic_addr = 0;
	int ret = 0;

	if (plat_priv->tcs_info.cmd_base_addr == 0) {
		cnss_pr_dbg("TCS CMD not configured\n");
		return 0;
	}

	ret = of_property_read_string(plat_dev->dev.of_node,
				      "qcom,cmd_db_name", &cmd_db_name);
	if (ret) {
		cnss_pr_dbg("CommandDB name is not present for CPR\n");
		goto out;
	}

	ret = cnss_cmd_db_ready(plat_priv);
	if (ret) {
		cnss_pr_err("CommandDB is not ready, err = %d\n", ret);
		goto out;
	}

	cpr_pmic_addr = cnss_cmd_db_read_addr(plat_priv, cmd_db_name);
	if (cpr_pmic_addr > 0) {
		cpr_info->cpr_pmic_addr = cpr_pmic_addr;
		cnss_pr_dbg("Get CPR PMIC address 0x%x from %s\n",
			    cpr_info->cpr_pmic_addr, cmd_db_name);
	} else {
		cnss_pr_err("CPR PMIC address is not available for %s\n",
			    cmd_db_name);
		ret = -EINVAL;
		goto out;
	}
	return 0;
out:
	return ret;
}

int cnss_aop_mbox_init(struct cnss_plat_data *plat_priv)
{
	struct mbox_client *mbox = &plat_priv->mbox_client_data;
	struct mbox_chan *chan;
	int ret = 0;

	mbox->dev = &plat_priv->plat_dev->dev;
	mbox->tx_block = true;
	mbox->tx_tout = CNSS_MBOX_TIMEOUT_MS;
	mbox->knows_txdone = false;

	plat_priv->mbox_chan = NULL;

	ret = of_property_read_string(plat_priv->plat_dev->dev.of_node,
				      "qcom,vreg_ol_cpr",
				      &plat_priv->vreg_ol_cpr);
	if (ret)
		cnss_pr_dbg("Vreg for OL CPR not configured\n");

	ret = of_property_read_string(plat_priv->plat_dev->dev.of_node,
				      "qcom,vreg_ipa",
				      &plat_priv->vreg_ipa);
	if (ret)
		cnss_pr_dbg("Volt regulator for Int Power Amp not configured\n");

	if (!plat_priv->vreg_ol_cpr && !plat_priv->vreg_ipa)
		return 0;

	chan = mbox_request_channel(mbox, 0);
	if (IS_ERR(chan)) {
		cnss_pr_err("Failed to get mbox channel\n");
		return PTR_ERR(chan);
	}

	plat_priv->mbox_chan = chan;
	cnss_pr_dbg("Mbox channel initialized\n");

	return 0;
}

#if IS_ENABLED(CONFIG_MSM_QMP)
static int cnss_aop_set_vreg_param(struct cnss_plat_data *plat_priv,
				   const char *vreg_name,
				   enum cnss_vreg_param param,
				   enum cnss_tcs_seq seq, int val)
{
	struct qmp_pkt pkt;
	char mbox_msg[CNSS_MBOX_MSG_MAX_LEN];
	static const char * const vreg_param_str[] = {"v", "m", "e"};
	static const char *const tcs_seq_str[] = {"upval", "dwnval", "enable"};
	int ret = 0;

	if (param > CNSS_VREG_ENABLE || seq > CNSS_TCS_ALL_SEQ || !vreg_name)
		return -EINVAL;

	snprintf(mbox_msg, CNSS_MBOX_MSG_MAX_LEN,
		 "{class: wlan_pdc, res: %s.%s, %s: %d}", vreg_name,
		 vreg_param_str[param], tcs_seq_str[seq], val);

	cnss_pr_dbg("Sending AOP Mbox msg: %s\n", mbox_msg);
	pkt.size = CNSS_MBOX_MSG_MAX_LEN;
	pkt.data = mbox_msg;

	ret = mbox_send_message(plat_priv->mbox_chan, &pkt);
	if (ret < 0)
		cnss_pr_err("Failed to send AOP mbox msg: %s\n", mbox_msg);
	else
		ret = 0;

	return ret;
}
#else
static int cnss_aop_set_vreg_param(struct cnss_plat_data *plat_priv,
				   const char *vreg_name,
				   enum cnss_vreg_param param,
				   enum cnss_tcs_seq seq, int val)
{
	return 0;
}
#endif

int cnss_update_cpr_info(struct cnss_plat_data *plat_priv)
{
	struct cnss_cpr_info *cpr_info = &plat_priv->cpr_info;
	u32 pmic_addr, voltage = 0, voltage_tmp, offset;
	void __iomem *tcs_cmd_addr, *tcs_cmd_data_addr;
	int i, j;

	if (cpr_info->voltage == 0) {
		cnss_pr_err("OL CPR Voltage %dm is not valid\n",
			    cpr_info->voltage);
		return -EINVAL;
	}

	if (!plat_priv->vreg_ol_cpr || !plat_priv->mbox_chan) {
		cnss_pr_dbg("Mbox channel / OL CPR Vreg not configured\n");
	} else {
		return cnss_aop_set_vreg_param(plat_priv,
					       plat_priv->vreg_ol_cpr,
					       CNSS_VREG_VOLTAGE,
					       CNSS_TCS_UP_SEQ,
					       cpr_info->voltage);
	}

	if (plat_priv->tcs_info.cmd_base_addr == 0) {
		cnss_pr_dbg("TCS CMD not configured for OL CPR update\n");
		return 0;
	}

	if (cpr_info->cpr_pmic_addr == 0) {
		cnss_pr_err("PMIC address 0x%x is not valid\n",
			    cpr_info->cpr_pmic_addr);
		return -EINVAL;
	}

	if (cpr_info->tcs_cmd_data_addr_io)
		goto update_cpr;

	for (i = 0; i < MAX_TCS_NUM; i++) {
		for (j = 0; j < MAX_TCS_CMD_NUM; j++) {
			offset = i * TCS_OFFSET + j * TCS_CMD_OFFSET;
			tcs_cmd_addr = plat_priv->tcs_info.cmd_base_addr_io +
									offset;
			pmic_addr = readl_relaxed(tcs_cmd_addr);
			if (pmic_addr == cpr_info->cpr_pmic_addr) {
				tcs_cmd_data_addr = tcs_cmd_addr +
					TCS_CMD_DATA_ADDR_OFFSET;
				voltage_tmp = readl_relaxed(tcs_cmd_data_addr);
				cnss_pr_dbg("Got voltage %dmV from i: %d, j: %d\n",
					    voltage_tmp, i, j);

				if (voltage_tmp > voltage) {
					voltage = voltage_tmp;
					cpr_info->tcs_cmd_data_addr =
					plat_priv->tcs_info.cmd_base_addr +
					offset + TCS_CMD_DATA_ADDR_OFFSET;
					cpr_info->tcs_cmd_data_addr_io =
						tcs_cmd_data_addr;
				}
			}
		}
	}

	if (!cpr_info->tcs_cmd_data_addr_io) {
		cnss_pr_err("Failed to find proper TCS CMD data address\n");
		return -EINVAL;
	}

update_cpr:
	cpr_info->voltage = cpr_info->voltage > BT_CXMX_VOLTAGE_MV ?
		cpr_info->voltage : BT_CXMX_VOLTAGE_MV;
	cnss_pr_dbg("Update TCS CMD data address %pa with voltage %dmV\n",
		    &cpr_info->tcs_cmd_data_addr, cpr_info->voltage);
	writel_relaxed(cpr_info->voltage, cpr_info->tcs_cmd_data_addr_io);

	return 0;
}

int cnss_enable_int_pow_amp_vreg(struct cnss_plat_data *plat_priv)
{
	struct platform_device *plat_dev = plat_priv->plat_dev;
	u32 offset, addr_val, data_val;
	void __iomem *tcs_cmd;
	int ret;
	static bool config_done;

	if (plat_priv->device_id != QCA6490_DEVICE_ID)
		return -EINVAL;

	if (config_done) {
		cnss_pr_dbg("IPA Vreg already configured\n");
		return 0;
	}

	if (!plat_priv->vreg_ipa || !plat_priv->mbox_chan) {
		cnss_pr_dbg("Mbox channel / IPA Vreg not configured\n");
	} else {
		ret = cnss_aop_set_vreg_param(plat_priv,
					      plat_priv->vreg_ipa,
					      CNSS_VREG_ENABLE,
					      CNSS_TCS_UP_SEQ, 1);
		if (ret == 0)
			config_done = true;
		return ret;
	}

	if (!plat_priv->tcs_info.cmd_base_addr_io) {
		cnss_pr_err("TCS CMD not configured for IPA Vreg enable\n");
		return -EINVAL;
	}

	ret = of_property_read_u32(plat_dev->dev.of_node,
				   "qcom,tcs_offset_int_pow_amp_vreg",
				   &offset);
	if (ret) {
		cnss_pr_dbg("Internal Power Amp Vreg not configured\n");
		return -EINVAL;
	}
	tcs_cmd = plat_priv->tcs_info.cmd_base_addr_io + offset;
	addr_val = readl_relaxed(tcs_cmd);
	tcs_cmd += TCS_CMD_DATA_ADDR_OFFSET;

	/* 1 = enable Vreg */
	writel_relaxed(1, tcs_cmd);

	data_val = readl_relaxed(tcs_cmd);
	cnss_pr_dbg("Setup S3E TCS Addr: %x Data: %d\n", addr_val, data_val);
	config_done = true;

	return 0;
}