Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 2891 insertions, 0 deletions

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
new file mode 100644
index 000000000..a5ab2af3e
--- /dev/null
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -0,0 +1,2891 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * drivers/mmc/host/sdhci-msm.c - Qualcomm SDHCI Platform driver
+ *
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/delay.h>
+#include <linux/mmc/mmc.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_opp.h>
+#include <linux/slab.h>
+#include <linux/iopoll.h>
+#include <linux/qcom_scm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/interconnect.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/reset.h>
+
+#include "sdhci-pltfm.h"
+#include "cqhci.h"
+
+#define CORE_MCI_VERSION		0x50
+#define CORE_VERSION_MAJOR_SHIFT	28
+#define CORE_VERSION_MAJOR_MASK		(0xf << CORE_VERSION_MAJOR_SHIFT)
+#define CORE_VERSION_MINOR_MASK		0xff
+
+#define CORE_MCI_GENERICS		0x70
+#define SWITCHABLE_SIGNALING_VOLTAGE	BIT(29)
+
+#define HC_MODE_EN		0x1
+#define CORE_POWER		0x0
+#define CORE_SW_RST		BIT(7)
+#define FF_CLK_SW_RST_DIS	BIT(13)
+
+#define CORE_PWRCTL_BUS_OFF	BIT(0)
+#define CORE_PWRCTL_BUS_ON	BIT(1)
+#define CORE_PWRCTL_IO_LOW	BIT(2)
+#define CORE_PWRCTL_IO_HIGH	BIT(3)
+#define CORE_PWRCTL_BUS_SUCCESS BIT(0)
+#define CORE_PWRCTL_BUS_FAIL    BIT(1)
+#define CORE_PWRCTL_IO_SUCCESS	BIT(2)
+#define CORE_PWRCTL_IO_FAIL     BIT(3)
+#define REQ_BUS_OFF		BIT(0)
+#define REQ_BUS_ON		BIT(1)
+#define REQ_IO_LOW		BIT(2)
+#define REQ_IO_HIGH		BIT(3)
+#define INT_MASK		0xf
+#define MAX_PHASES		16
+#define CORE_DLL_LOCK		BIT(7)
+#define CORE_DDR_DLL_LOCK	BIT(11)
+#define CORE_DLL_EN		BIT(16)
+#define CORE_CDR_EN		BIT(17)
+#define CORE_CK_OUT_EN		BIT(18)
+#define CORE_CDR_EXT_EN		BIT(19)
+#define CORE_DLL_PDN		BIT(29)
+#define CORE_DLL_RST		BIT(30)
+#define CORE_CMD_DAT_TRACK_SEL	BIT(0)
+
+#define CORE_DDR_CAL_EN		BIT(0)
+#define CORE_FLL_CYCLE_CNT	BIT(18)
+#define CORE_DLL_CLOCK_DISABLE	BIT(21)
+
+#define DLL_USR_CTL_POR_VAL	0x10800
+#define ENABLE_DLL_LOCK_STATUS	BIT(26)
+#define FINE_TUNE_MODE_EN	BIT(27)
+#define BIAS_OK_SIGNAL		BIT(29)
+
+#define DLL_CONFIG_3_LOW_FREQ_VAL	0x08
+#define DLL_CONFIG_3_HIGH_FREQ_VAL	0x10
+
+#define CORE_VENDOR_SPEC_POR_VAL 0xa9c
+#define CORE_CLK_PWRSAVE	BIT(1)
+#define CORE_HC_MCLK_SEL_DFLT	(2 << 8)
+#define CORE_HC_MCLK_SEL_HS400	(3 << 8)
+#define CORE_HC_MCLK_SEL_MASK	(3 << 8)
+#define CORE_IO_PAD_PWR_SWITCH_EN	BIT(15)
+#define CORE_IO_PAD_PWR_SWITCH	BIT(16)
+#define CORE_HC_SELECT_IN_EN	BIT(18)
+#define CORE_HC_SELECT_IN_HS400	(6 << 19)
+#define CORE_HC_SELECT_IN_MASK	(7 << 19)
+
+#define CORE_3_0V_SUPPORT	BIT(25)
+#define CORE_1_8V_SUPPORT	BIT(26)
+#define CORE_VOLT_SUPPORT	(CORE_3_0V_SUPPORT | CORE_1_8V_SUPPORT)
+
+#define CORE_CSR_CDC_CTLR_CFG0		0x130
+#define CORE_SW_TRIG_FULL_CALIB		BIT(16)
+#define CORE_HW_AUTOCAL_ENA		BIT(17)
+
+#define CORE_CSR_CDC_CTLR_CFG1		0x134
+#define CORE_CSR_CDC_CAL_TIMER_CFG0	0x138
+#define CORE_TIMER_ENA			BIT(16)
+
+#define CORE_CSR_CDC_CAL_TIMER_CFG1	0x13C
+#define CORE_CSR_CDC_REFCOUNT_CFG	0x140
+#define CORE_CSR_CDC_COARSE_CAL_CFG	0x144
+#define CORE_CDC_OFFSET_CFG		0x14C
+#define CORE_CSR_CDC_DELAY_CFG		0x150
+#define CORE_CDC_SLAVE_DDA_CFG		0x160
+#define CORE_CSR_CDC_STATUS0		0x164
+#define CORE_CALIBRATION_DONE		BIT(0)
+
+#define CORE_CDC_ERROR_CODE_MASK	0x7000000
+
+#define CORE_CSR_CDC_GEN_CFG		0x178
+#define CORE_CDC_SWITCH_BYPASS_OFF	BIT(0)
+#define CORE_CDC_SWITCH_RC_EN		BIT(1)
+
+#define CORE_CDC_T4_DLY_SEL		BIT(0)
+#define CORE_CMDIN_RCLK_EN		BIT(1)
+#define CORE_START_CDC_TRAFFIC		BIT(6)
+
+#define CORE_PWRSAVE_DLL	BIT(3)
+
+#define DDR_CONFIG_POR_VAL	0x80040873
+
+
+#define INVALID_TUNING_PHASE	-1
+#define SDHCI_MSM_MIN_CLOCK	400000
+#define CORE_FREQ_100MHZ	(100 * 1000 * 1000)
+
+#define CDR_SELEXT_SHIFT	20
+#define CDR_SELEXT_MASK		(0xf << CDR_SELEXT_SHIFT)
+#define CMUX_SHIFT_PHASE_SHIFT	24
+#define CMUX_SHIFT_PHASE_MASK	(7 << CMUX_SHIFT_PHASE_SHIFT)
+
+#define MSM_MMC_AUTOSUSPEND_DELAY_MS	50
+
+/* Timeout value to avoid infinite waiting for pwr_irq */
+#define MSM_PWR_IRQ_TIMEOUT_MS 5000
+
+/* Max load for eMMC Vdd-io supply */
+#define MMC_VQMMC_MAX_LOAD_UA	325000
+
+#define msm_host_readl(msm_host, host, offset) \
+	msm_host->var_ops->msm_readl_relaxed(host, offset)
+
+#define msm_host_writel(msm_host, val, host, offset) \
+	msm_host->var_ops->msm_writel_relaxed(val, host, offset)
+
+/* CQHCI vendor specific registers */
+#define CQHCI_VENDOR_CFG1	0xA00
+#define CQHCI_VENDOR_DIS_RST_ON_CQ_EN	(0x3 << 13)
+
+struct sdhci_msm_offset {
+	u32 core_hc_mode;
+	u32 core_mci_data_cnt;
+	u32 core_mci_status;
+	u32 core_mci_fifo_cnt;
+	u32 core_mci_version;
+	u32 core_generics;
+	u32 core_testbus_config;
+	u32 core_testbus_sel2_bit;
+	u32 core_testbus_ena;
+	u32 core_testbus_sel2;
+	u32 core_pwrctl_status;
+	u32 core_pwrctl_mask;
+	u32 core_pwrctl_clear;
+	u32 core_pwrctl_ctl;
+	u32 core_sdcc_debug_reg;
+	u32 core_dll_config;
+	u32 core_dll_status;
+	u32 core_vendor_spec;
+	u32 core_vendor_spec_adma_err_addr0;
+	u32 core_vendor_spec_adma_err_addr1;
+	u32 core_vendor_spec_func2;
+	u32 core_vendor_spec_capabilities0;
+	u32 core_ddr_200_cfg;
+	u32 core_vendor_spec3;
+	u32 core_dll_config_2;
+	u32 core_dll_config_3;
+	u32 core_ddr_config_old; /* Applicable to sdcc minor ver < 0x49 */
+	u32 core_ddr_config;
+	u32 core_dll_usr_ctl; /* Present on SDCC5.1 onwards */
+};
+
+static const struct sdhci_msm_offset sdhci_msm_v5_offset = {
+	.core_mci_data_cnt = 0x35c,
+	.core_mci_status = 0x324,
+	.core_mci_fifo_cnt = 0x308,
+	.core_mci_version = 0x318,
+	.core_generics = 0x320,
+	.core_testbus_config = 0x32c,
+	.core_testbus_sel2_bit = 3,
+	.core_testbus_ena = (1 << 31),
+	.core_testbus_sel2 = (1 << 3),
+	.core_pwrctl_status = 0x240,
+	.core_pwrctl_mask = 0x244,
+	.core_pwrctl_clear = 0x248,
+	.core_pwrctl_ctl = 0x24c,
+	.core_sdcc_debug_reg = 0x358,
+	.core_dll_config = 0x200,
+	.core_dll_status = 0x208,
+	.core_vendor_spec = 0x20c,
+	.core_vendor_spec_adma_err_addr0 = 0x214,
+	.core_vendor_spec_adma_err_addr1 = 0x218,
+	.core_vendor_spec_func2 = 0x210,
+	.core_vendor_spec_capabilities0 = 0x21c,
+	.core_ddr_200_cfg = 0x224,
+	.core_vendor_spec3 = 0x250,
+	.core_dll_config_2 = 0x254,
+	.core_dll_config_3 = 0x258,
+	.core_ddr_config = 0x25c,
+	.core_dll_usr_ctl = 0x388,
+};
+
+static const struct sdhci_msm_offset sdhci_msm_mci_offset = {
+	.core_hc_mode = 0x78,
+	.core_mci_data_cnt = 0x30,
+	.core_mci_status = 0x34,
+	.core_mci_fifo_cnt = 0x44,
+	.core_mci_version = 0x050,
+	.core_generics = 0x70,
+	.core_testbus_config = 0x0cc,
+	.core_testbus_sel2_bit = 4,
+	.core_testbus_ena = (1 << 3),
+	.core_testbus_sel2 = (1 << 4),
+	.core_pwrctl_status = 0xdc,
+	.core_pwrctl_mask = 0xe0,
+	.core_pwrctl_clear = 0xe4,
+	.core_pwrctl_ctl = 0xe8,
+	.core_sdcc_debug_reg = 0x124,
+	.core_dll_config = 0x100,
+	.core_dll_status = 0x108,
+	.core_vendor_spec = 0x10c,
+	.core_vendor_spec_adma_err_addr0 = 0x114,
+	.core_vendor_spec_adma_err_addr1 = 0x118,
+	.core_vendor_spec_func2 = 0x110,
+	.core_vendor_spec_capabilities0 = 0x11c,
+	.core_ddr_200_cfg = 0x184,
+	.core_vendor_spec3 = 0x1b0,
+	.core_dll_config_2 = 0x1b4,
+	.core_ddr_config_old = 0x1b8,
+	.core_ddr_config = 0x1bc,
+};
+
+struct sdhci_msm_variant_ops {
+	u32 (*msm_readl_relaxed)(struct sdhci_host *host, u32 offset);
+	void (*msm_writel_relaxed)(u32 val, struct sdhci_host *host,
+			u32 offset);
+};
+
+/*
+ * From V5, register spaces have changed. Wrap this info in a structure
+ * and choose the data_structure based on version info mentioned in DT.
+ */
+struct sdhci_msm_variant_info {
+	bool mci_removed;
+	bool restore_dll_config;
+	const struct sdhci_msm_variant_ops *var_ops;
+	const struct sdhci_msm_offset *offset;
+};
+
+struct sdhci_msm_host {
+	struct platform_device *pdev;
+	void __iomem *core_mem;	/* MSM SDCC mapped address */
+	void __iomem *ice_mem;	/* MSM ICE mapped address (if available) */
+	int pwr_irq;		/* power irq */
+	struct clk *bus_clk;	/* SDHC bus voter clock */
+	struct clk *xo_clk;	/* TCXO clk needed for FLL feature of cm_dll*/
+	/* core, iface, cal, sleep, and ice clocks */
+	struct clk_bulk_data bulk_clks[5];
+	unsigned long clk_rate;
+	struct mmc_host *mmc;
+	bool use_14lpp_dll_reset;
+	bool tuning_done;
+	bool calibration_done;
+	u8 saved_tuning_phase;
+	bool use_cdclp533;
+	u32 curr_pwr_state;
+	u32 curr_io_level;
+	wait_queue_head_t pwr_irq_wait;
+	bool pwr_irq_flag;
+	u32 caps_0;
+	bool mci_removed;
+	bool restore_dll_config;
+	const struct sdhci_msm_variant_ops *var_ops;
+	const struct sdhci_msm_offset *offset;
+	bool use_cdr;
+	u32 transfer_mode;
+	bool updated_ddr_cfg;
+	bool uses_tassadar_dll;
+	u32 dll_config;
+	u32 ddr_config;
+	bool vqmmc_enabled;
+};
+
+static const struct sdhci_msm_offset *sdhci_priv_msm_offset(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	return msm_host->offset;
+}
+
+/*
+ * APIs to read/write to vendor specific registers which were there in the
+ * core_mem region before MCI was removed.
+ */
+static u32 sdhci_msm_mci_variant_readl_relaxed(struct sdhci_host *host,
+		u32 offset)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	return readl_relaxed(msm_host->core_mem + offset);
+}
+
+static u32 sdhci_msm_v5_variant_readl_relaxed(struct sdhci_host *host,
+		u32 offset)
+{
+	return readl_relaxed(host->ioaddr + offset);
+}
+
+static void sdhci_msm_mci_variant_writel_relaxed(u32 val,
+		struct sdhci_host *host, u32 offset)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	writel_relaxed(val, msm_host->core_mem + offset);
+}
+
+static void sdhci_msm_v5_variant_writel_relaxed(u32 val,
+		struct sdhci_host *host, u32 offset)
+{
+	writel_relaxed(val, host->ioaddr + offset);
+}
+
+static unsigned int msm_get_clock_mult_for_bus_mode(struct sdhci_host *host)
+{
+	struct mmc_ios ios = host->mmc->ios;
+	/*
+	 * The SDHC requires internal clock frequency to be double the
+	 * actual clock that will be set for DDR mode. The controller
+	 * uses the faster clock(100/400MHz) for some of its parts and
+	 * send the actual required clock (50/200MHz) to the card.
+	 */
+	if (ios.timing == MMC_TIMING_UHS_DDR50 ||
+	    ios.timing == MMC_TIMING_MMC_DDR52 ||
+	    ios.timing == MMC_TIMING_MMC_HS400 ||
+	    host->flags & SDHCI_HS400_TUNING)
+		return 2;
+	return 1;
+}
+
+static void msm_set_clock_rate_for_bus_mode(struct sdhci_host *host,
+					    unsigned int clock)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct mmc_ios curr_ios = host->mmc->ios;
+	struct clk *core_clk = msm_host->bulk_clks[0].clk;
+	unsigned long achieved_rate;
+	unsigned int desired_rate;
+	unsigned int mult;
+	int rc;
+
+	mult = msm_get_clock_mult_for_bus_mode(host);
+	desired_rate = clock * mult;
+	rc = dev_pm_opp_set_rate(mmc_dev(host->mmc), desired_rate);
+	if (rc) {
+		pr_err("%s: Failed to set clock at rate %u at timing %d\n",
+		       mmc_hostname(host->mmc), desired_rate, curr_ios.timing);
+		return;
+	}
+
+	/*
+	 * Qualcomm clock drivers by default round clock _up_ if they can't
+	 * make the requested rate.  This is not good for SD.  Yell if we
+	 * encounter it.
+	 */
+	achieved_rate = clk_get_rate(core_clk);
+	if (achieved_rate > desired_rate)
+		pr_warn("%s: Card appears overclocked; req %u Hz, actual %lu Hz\n",
+			mmc_hostname(host->mmc), desired_rate, achieved_rate);
+	host->mmc->actual_clock = achieved_rate / mult;
+
+	/* Stash the rate we requested to use in sdhci_msm_runtime_resume() */
+	msm_host->clk_rate = desired_rate;
+
+	pr_debug("%s: Setting clock at rate %lu at timing %d\n",
+		 mmc_hostname(host->mmc), achieved_rate, curr_ios.timing);
+}
+
+/* Platform specific tuning */
+static inline int msm_dll_poll_ck_out_en(struct sdhci_host *host, u8 poll)
+{
+	u32 wait_cnt = 50;
+	u8 ck_out_en;
+	struct mmc_host *mmc = host->mmc;
+	const struct sdhci_msm_offset *msm_offset =
+					sdhci_priv_msm_offset(host);
+
+	/* Poll for CK_OUT_EN bit.  max. poll time = 50us */
+	ck_out_en = !!(readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config) & CORE_CK_OUT_EN);
+
+	while (ck_out_en != poll) {
+		if (--wait_cnt == 0) {
+			dev_err(mmc_dev(mmc), "%s: CK_OUT_EN bit is not %d\n",
+			       mmc_hostname(mmc), poll);
+			return -ETIMEDOUT;
+		}
+		udelay(1);
+
+		ck_out_en = !!(readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config) & CORE_CK_OUT_EN);
+	}
+
+	return 0;
+}
+
+static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase)
+{
+	int rc;
+	static const u8 grey_coded_phase_table[] = {
+		0x0, 0x1, 0x3, 0x2, 0x6, 0x7, 0x5, 0x4,
+		0xc, 0xd, 0xf, 0xe, 0xa, 0xb, 0x9, 0x8
+	};
+	unsigned long flags;
+	u32 config;
+	struct mmc_host *mmc = host->mmc;
+	const struct sdhci_msm_offset *msm_offset =
+					sdhci_priv_msm_offset(host);
+
+	if (phase > 0xf)
+		return -EINVAL;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config &= ~(CORE_CDR_EN | CORE_CK_OUT_EN);
+	config |= (CORE_CDR_EXT_EN | CORE_DLL_EN);
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+
+	/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '0' */
+	rc = msm_dll_poll_ck_out_en(host, 0);
+	if (rc)
+		goto err_out;
+
+	/*
+	 * Write the selected DLL clock output phase (0 ... 15)
+	 * to CDR_SELEXT bit field of DLL_CONFIG register.
+	 */
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config &= ~CDR_SELEXT_MASK;
+	config |= grey_coded_phase_table[phase] << CDR_SELEXT_SHIFT;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config |= CORE_CK_OUT_EN;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+
+	/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '1' */
+	rc = msm_dll_poll_ck_out_en(host, 1);
+	if (rc)
+		goto err_out;
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config |= CORE_CDR_EN;
+	config &= ~CORE_CDR_EXT_EN;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+	goto out;
+
+err_out:
+	dev_err(mmc_dev(mmc), "%s: Failed to set DLL phase: %d\n",
+	       mmc_hostname(mmc), phase);
+out:
+	spin_unlock_irqrestore(&host->lock, flags);
+	return rc;
+}
+
+/*
+ * Find out the greatest range of consecuitive selected
+ * DLL clock output phases that can be used as sampling
+ * setting for SD3.0 UHS-I card read operation (in SDR104
+ * timing mode) or for eMMC4.5 card read operation (in
+ * HS400/HS200 timing mode).
+ * Select the 3/4 of the range and configure the DLL with the
+ * selected DLL clock output phase.
+ */
+
+static int msm_find_most_appropriate_phase(struct sdhci_host *host,
+					   u8 *phase_table, u8 total_phases)
+{
+	int ret;
+	u8 ranges[MAX_PHASES][MAX_PHASES] = { {0}, {0} };
+	u8 phases_per_row[MAX_PHASES] = { 0 };
+	int row_index = 0, col_index = 0, selected_row_index = 0, curr_max = 0;
+	int i, cnt, phase_0_raw_index = 0, phase_15_raw_index = 0;
+	bool phase_0_found = false, phase_15_found = false;
+	struct mmc_host *mmc = host->mmc;
+
+	if (!total_phases || (total_phases > MAX_PHASES)) {
+		dev_err(mmc_dev(mmc), "%s: Invalid argument: total_phases=%d\n",
+		       mmc_hostname(mmc), total_phases);
+		return -EINVAL;
+	}
+
+	for (cnt = 0; cnt < total_phases; cnt++) {
+		ranges[row_index][col_index] = phase_table[cnt];
+		phases_per_row[row_index] += 1;
+		col_index++;
+
+		if ((cnt + 1) == total_phases) {
+			continue;
+		/* check if next phase in phase_table is consecutive or not */
+		} else if ((phase_table[cnt] + 1) != phase_table[cnt + 1]) {
+			row_index++;
+			col_index = 0;
+		}
+	}
+
+	if (row_index >= MAX_PHASES)
+		return -EINVAL;
+
+	/* Check if phase-0 is present in first valid window? */
+	if (!ranges[0][0]) {
+		phase_0_found = true;
+		phase_0_raw_index = 0;
+		/* Check if cycle exist between 2 valid windows */
+		for (cnt = 1; cnt <= row_index; cnt++) {
+			if (phases_per_row[cnt]) {
+				for (i = 0; i < phases_per_row[cnt]; i++) {
+					if (ranges[cnt][i] == 15) {
+						phase_15_found = true;
+						phase_15_raw_index = cnt;
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	/* If 2 valid windows form cycle then merge them as single window */
+	if (phase_0_found && phase_15_found) {
+		/* number of phases in raw where phase 0 is present */
+		u8 phases_0 = phases_per_row[phase_0_raw_index];
+		/* number of phases in raw where phase 15 is present */
+		u8 phases_15 = phases_per_row[phase_15_raw_index];
+
+		if (phases_0 + phases_15 >= MAX_PHASES)
+			/*
+			 * If there are more than 1 phase windows then total
+			 * number of phases in both the windows should not be
+			 * more than or equal to MAX_PHASES.
+			 */
+			return -EINVAL;
+
+		/* Merge 2 cyclic windows */
+		i = phases_15;
+		for (cnt = 0; cnt < phases_0; cnt++) {
+			ranges[phase_15_raw_index][i] =
+			    ranges[phase_0_raw_index][cnt];
+			if (++i >= MAX_PHASES)
+				break;
+		}
+
+		phases_per_row[phase_0_raw_index] = 0;
+		phases_per_row[phase_15_raw_index] = phases_15 + phases_0;
+	}
+
+	for (cnt = 0; cnt <= row_index; cnt++) {
+		if (phases_per_row[cnt] > curr_max) {
+			curr_max = phases_per_row[cnt];
+			selected_row_index = cnt;
+		}
+	}
+
+	i = (curr_max * 3) / 4;
+	if (i)
+		i--;
+
+	ret = ranges[selected_row_index][i];
+
+	if (ret >= MAX_PHASES) {
+		ret = -EINVAL;
+		dev_err(mmc_dev(mmc), "%s: Invalid phase selected=%d\n",
+		       mmc_hostname(mmc), ret);
+	}
+
+	return ret;
+}
+
+static inline void msm_cm_dll_set_freq(struct sdhci_host *host)
+{
+	u32 mclk_freq = 0, config;
+	const struct sdhci_msm_offset *msm_offset =
+					sdhci_priv_msm_offset(host);
+
+	/* Program the MCLK value to MCLK_FREQ bit field */
+	if (host->clock <= 112000000)
+		mclk_freq = 0;
+	else if (host->clock <= 125000000)
+		mclk_freq = 1;
+	else if (host->clock <= 137000000)
+		mclk_freq = 2;
+	else if (host->clock <= 150000000)
+		mclk_freq = 3;
+	else if (host->clock <= 162000000)
+		mclk_freq = 4;
+	else if (host->clock <= 175000000)
+		mclk_freq = 5;
+	else if (host->clock <= 187000000)
+		mclk_freq = 6;
+	else if (host->clock <= 200000000)
+		mclk_freq = 7;
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config &= ~CMUX_SHIFT_PHASE_MASK;
+	config |= mclk_freq << CMUX_SHIFT_PHASE_SHIFT;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+}
+
+/* Initialize the DLL (Programmable Delay Line) */
+static int msm_init_cm_dll(struct sdhci_host *host)
+{
+	struct mmc_host *mmc = host->mmc;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	int wait_cnt = 50;
+	unsigned long flags, xo_clk = 0;
+	u32 config;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	if (msm_host->use_14lpp_dll_reset && !IS_ERR_OR_NULL(msm_host->xo_clk))
+		xo_clk = clk_get_rate(msm_host->xo_clk);
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	/*
+	 * Make sure that clock is always enabled when DLL
+	 * tuning is in progress. Keeping PWRSAVE ON may
+	 * turn off the clock.
+	 */
+	config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
+	config &= ~CORE_CLK_PWRSAVE;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
+
+	if (msm_host->dll_config)
+		writel_relaxed(msm_host->dll_config,
+				host->ioaddr + msm_offset->core_dll_config);
+
+	if (msm_host->use_14lpp_dll_reset) {
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config);
+		config &= ~CORE_CK_OUT_EN;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config);
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config_2);
+		config |= CORE_DLL_CLOCK_DISABLE;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config_2);
+	}
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config |= CORE_DLL_RST;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config |= CORE_DLL_PDN;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	if (!msm_host->dll_config)
+		msm_cm_dll_set_freq(host);
+
+	if (msm_host->use_14lpp_dll_reset &&
+	    !IS_ERR_OR_NULL(msm_host->xo_clk)) {
+		u32 mclk_freq = 0;
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config_2);
+		config &= CORE_FLL_CYCLE_CNT;
+		if (config)
+			mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 8),
+					xo_clk);
+		else
+			mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 4),
+					xo_clk);
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config_2);
+		config &= ~(0xFF << 10);
+		config |= mclk_freq << 10;
+
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config_2);
+		/* wait for 5us before enabling DLL clock */
+		udelay(5);
+	}
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config &= ~CORE_DLL_RST;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config &= ~CORE_DLL_PDN;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	if (msm_host->use_14lpp_dll_reset) {
+		if (!msm_host->dll_config)
+			msm_cm_dll_set_freq(host);
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config_2);
+		config &= ~CORE_DLL_CLOCK_DISABLE;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config_2);
+	}
+
+	/*
+	 * Configure DLL user control register to enable DLL status.
+	 * This setting is applicable to SDCC v5.1 onwards only.
+	 */
+	if (msm_host->uses_tassadar_dll) {
+		config = DLL_USR_CTL_POR_VAL | FINE_TUNE_MODE_EN |
+			ENABLE_DLL_LOCK_STATUS | BIAS_OK_SIGNAL;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_usr_ctl);
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config_3);
+		config &= ~0xFF;
+		if (msm_host->clk_rate < 150000000)
+			config |= DLL_CONFIG_3_LOW_FREQ_VAL;
+		else
+			config |= DLL_CONFIG_3_HIGH_FREQ_VAL;
+		writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config_3);
+	}
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config |= CORE_DLL_EN;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	config = readl_relaxed(host->ioaddr +
+			msm_offset->core_dll_config);
+	config |= CORE_CK_OUT_EN;
+	writel_relaxed(config, host->ioaddr +
+			msm_offset->core_dll_config);
+
+	/* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */
+	while (!(readl_relaxed(host->ioaddr + msm_offset->core_dll_status) &
+		 CORE_DLL_LOCK)) {
+		/* max. wait for 50us sec for LOCK bit to be set */
+		if (--wait_cnt == 0) {
+			dev_err(mmc_dev(mmc), "%s: DLL failed to LOCK\n",
+			       mmc_hostname(mmc));
+			spin_unlock_irqrestore(&host->lock, flags);
+			return -ETIMEDOUT;
+		}
+		udelay(1);
+	}
+
+	spin_unlock_irqrestore(&host->lock, flags);
+	return 0;
+}
+
+static void msm_hc_select_default(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	u32 config;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	if (!msm_host->use_cdclp533) {
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_vendor_spec3);
+		config &= ~CORE_PWRSAVE_DLL;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_vendor_spec3);
+	}
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
+	config &= ~CORE_HC_MCLK_SEL_MASK;
+	config |= CORE_HC_MCLK_SEL_DFLT;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
+
+	/*
+	 * Disable HC_SELECT_IN to be able to use the UHS mode select
+	 * configuration from Host Control2 register for all other
+	 * modes.
+	 * Write 0 to HC_SELECT_IN and HC_SELECT_IN_EN field
+	 * in VENDOR_SPEC_FUNC
+	 */
+	config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
+	config &= ~CORE_HC_SELECT_IN_EN;
+	config &= ~CORE_HC_SELECT_IN_MASK;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
+
+	/*
+	 * Make sure above writes impacting free running MCLK are completed
+	 * before changing the clk_rate at GCC.
+	 */
+	wmb();
+}
+
+static void msm_hc_select_hs400(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct mmc_ios ios = host->mmc->ios;
+	u32 config, dll_lock;
+	int rc;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	/* Select the divided clock (free running MCLK/2) */
+	config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
+	config &= ~CORE_HC_MCLK_SEL_MASK;
+	config |= CORE_HC_MCLK_SEL_HS400;
+
+	writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
+	/*
+	 * Select HS400 mode using the HC_SELECT_IN from VENDOR SPEC
+	 * register
+	 */
+	if ((msm_host->tuning_done || ios.enhanced_strobe) &&
+	    !msm_host->calibration_done) {
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_vendor_spec);
+		config |= CORE_HC_SELECT_IN_HS400;
+		config |= CORE_HC_SELECT_IN_EN;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_vendor_spec);
+	}
+	if (!msm_host->clk_rate && !msm_host->use_cdclp533) {
+		/*
+		 * Poll on DLL_LOCK or DDR_DLL_LOCK bits in
+		 * core_dll_status to be set. This should get set
+		 * within 15 us at 200 MHz.
+		 */
+		rc = readl_relaxed_poll_timeout(host->ioaddr +
+						msm_offset->core_dll_status,
+						dll_lock,
+						(dll_lock &
+						(CORE_DLL_LOCK |
+						CORE_DDR_DLL_LOCK)), 10,
+						1000);
+		if (rc == -ETIMEDOUT)
+			pr_err("%s: Unable to get DLL_LOCK/DDR_DLL_LOCK, dll_status: 0x%08x\n",
+			       mmc_hostname(host->mmc), dll_lock);
+	}
+	/*
+	 * Make sure above writes impacting free running MCLK are completed
+	 * before changing the clk_rate at GCC.
+	 */
+	wmb();
+}
+
+/*
+ * sdhci_msm_hc_select_mode :- In general all timing modes are
+ * controlled via UHS mode select in Host Control2 register.
+ * eMMC specific HS200/HS400 doesn't have their respective modes
+ * defined here, hence we use these values.
+ *
+ * HS200 - SDR104 (Since they both are equivalent in functionality)
+ * HS400 - This involves multiple configurations
+ *		Initially SDR104 - when tuning is required as HS200
+ *		Then when switching to DDR @ 400MHz (HS400) we use
+ *		the vendor specific HC_SELECT_IN to control the mode.
+ *
+ * In addition to controlling the modes we also need to select the
+ * correct input clock for DLL depending on the mode.
+ *
+ * HS400 - divided clock (free running MCLK/2)
+ * All other modes - default (free running MCLK)
+ */
+static void sdhci_msm_hc_select_mode(struct sdhci_host *host)
+{
+	struct mmc_ios ios = host->mmc->ios;
+
+	if (ios.timing == MMC_TIMING_MMC_HS400 ||
+	    host->flags & SDHCI_HS400_TUNING)
+		msm_hc_select_hs400(host);
+	else
+		msm_hc_select_default(host);
+}
+
+static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	u32 config, calib_done;
+	int ret;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+	/*
+	 * Retuning in HS400 (DDR mode) will fail, just reset the
+	 * tuning block and restore the saved tuning phase.
+	 */
+	ret = msm_init_cm_dll(host);
+	if (ret)
+		goto out;
+
+	/* Set the selected phase in delay line hw block */
+	ret = msm_config_cm_dll_phase(host, msm_host->saved_tuning_phase);
+	if (ret)
+		goto out;
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
+	config |= CORE_CMD_DAT_TRACK_SEL;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
+	config &= ~CORE_CDC_T4_DLY_SEL;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+	config &= ~CORE_CDC_SWITCH_BYPASS_OFF;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+	config |= CORE_CDC_SWITCH_RC_EN;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
+	config &= ~CORE_START_CDC_TRAFFIC;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
+
+	/* Perform CDC Register Initialization Sequence */
+
+	writel_relaxed(0x11800EC, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+	writel_relaxed(0x3011111, host->ioaddr + CORE_CSR_CDC_CTLR_CFG1);
+	writel_relaxed(0x1201000, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+	writel_relaxed(0x4, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG1);
+	writel_relaxed(0xCB732020, host->ioaddr + CORE_CSR_CDC_REFCOUNT_CFG);
+	writel_relaxed(0xB19, host->ioaddr + CORE_CSR_CDC_COARSE_CAL_CFG);
+	writel_relaxed(0x4E2, host->ioaddr + CORE_CSR_CDC_DELAY_CFG);
+	writel_relaxed(0x0, host->ioaddr + CORE_CDC_OFFSET_CFG);
+	writel_relaxed(0x16334, host->ioaddr + CORE_CDC_SLAVE_DDA_CFG);
+
+	/* CDC HW Calibration */
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+	config |= CORE_SW_TRIG_FULL_CALIB;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+	config &= ~CORE_SW_TRIG_FULL_CALIB;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+	config |= CORE_HW_AUTOCAL_ENA;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+	config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+	config |= CORE_TIMER_ENA;
+	writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+
+	ret = readl_relaxed_poll_timeout(host->ioaddr + CORE_CSR_CDC_STATUS0,
+					 calib_done,
+					 (calib_done & CORE_CALIBRATION_DONE),
+					 1, 50);
+
+	if (ret == -ETIMEDOUT) {
+		pr_err("%s: %s: CDC calibration was not completed\n",
+		       mmc_hostname(host->mmc), __func__);
+		goto out;
+	}
+
+	ret = readl_relaxed(host->ioaddr + CORE_CSR_CDC_STATUS0)
+			& CORE_CDC_ERROR_CODE_MASK;
+	if (ret) {
+		pr_err("%s: %s: CDC error code %d\n",
+		       mmc_hostname(host->mmc), __func__, ret);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
+	config |= CORE_START_CDC_TRAFFIC;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
+out:
+	pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+		 __func__, ret);
+	return ret;
+}
+
+static int sdhci_msm_cm_dll_sdc4_calibration(struct sdhci_host *host)
+{
+	struct mmc_host *mmc = host->mmc;
+	u32 dll_status, config, ddr_cfg_offset;
+	int ret;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	const struct sdhci_msm_offset *msm_offset =
+					sdhci_priv_msm_offset(host);
+
+	pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+	/*
+	 * Currently the core_ddr_config register defaults to desired
+	 * configuration on reset. Currently reprogramming the power on
+	 * reset (POR) value in case it might have been modified by
+	 * bootloaders. In the future, if this changes, then the desired
+	 * values will need to be programmed appropriately.
+	 */
+	if (msm_host->updated_ddr_cfg)
+		ddr_cfg_offset = msm_offset->core_ddr_config;
+	else
+		ddr_cfg_offset = msm_offset->core_ddr_config_old;
+	writel_relaxed(msm_host->ddr_config, host->ioaddr + ddr_cfg_offset);
+
+	if (mmc->ios.enhanced_strobe) {
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_ddr_200_cfg);
+		config |= CORE_CMDIN_RCLK_EN;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_ddr_200_cfg);
+	}
+
+	config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config_2);
+	config |= CORE_DDR_CAL_EN;
+	writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config_2);
+
+	ret = readl_relaxed_poll_timeout(host->ioaddr +
+					msm_offset->core_dll_status,
+					dll_status,
+					(dll_status & CORE_DDR_DLL_LOCK),
+					10, 1000);
+
+	if (ret == -ETIMEDOUT) {
+		pr_err("%s: %s: CM_DLL_SDC4 calibration was not completed\n",
+		       mmc_hostname(host->mmc), __func__);
+		goto out;
+	}
+
+	/*
+	 * Set CORE_PWRSAVE_DLL bit in CORE_VENDOR_SPEC3.
+	 * When MCLK is gated OFF, it is not gated for less than 0.5us
+	 * and MCLK must be switched on for at-least 1us before DATA
+	 * starts coming. Controllers with 14lpp and later tech DLL cannot
+	 * guarantee above requirement. So PWRSAVE_DLL should not be
+	 * turned on for host controllers using this DLL.
+	 */
+	if (!msm_host->use_14lpp_dll_reset) {
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_vendor_spec3);
+		config |= CORE_PWRSAVE_DLL;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_vendor_spec3);
+	}
+
+	/*
+	 * Drain writebuffer to ensure above DLL calibration
+	 * and PWRSAVE DLL is enabled.
+	 */
+	wmb();
+out:
+	pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+		 __func__, ret);
+	return ret;
+}
+
+static int sdhci_msm_hs400_dll_calibration(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct mmc_host *mmc = host->mmc;
+	int ret;
+	u32 config;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+	/*
+	 * Retuning in HS400 (DDR mode) will fail, just reset the
+	 * tuning block and restore the saved tuning phase.
+	 */
+	ret = msm_init_cm_dll(host);
+	if (ret)
+		goto out;
+
+	if (!mmc->ios.enhanced_strobe) {
+		/* Set the selected phase in delay line hw block */
+		ret = msm_config_cm_dll_phase(host,
+					      msm_host->saved_tuning_phase);
+		if (ret)
+			goto out;
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config);
+		config |= CORE_CMD_DAT_TRACK_SEL;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config);
+	}
+
+	if (msm_host->use_cdclp533)
+		ret = sdhci_msm_cdclp533_calibration(host);
+	else
+		ret = sdhci_msm_cm_dll_sdc4_calibration(host);
+out:
+	pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+		 __func__, ret);
+	return ret;
+}
+
+static bool sdhci_msm_is_tuning_needed(struct sdhci_host *host)
+{
+	struct mmc_ios *ios = &host->mmc->ios;
+
+	/*
+	 * Tuning is required for SDR104, HS200 and HS400 cards and
+	 * if clock frequency is greater than 100MHz in these modes.
+	 */
+	if (host->clock <= CORE_FREQ_100MHZ ||
+	    !(ios->timing == MMC_TIMING_MMC_HS400 ||
+	    ios->timing == MMC_TIMING_MMC_HS200 ||
+	    ios->timing == MMC_TIMING_UHS_SDR104) ||
+	    ios->enhanced_strobe)
+		return false;
+
+	return true;
+}
+
+static int sdhci_msm_restore_sdr_dll_config(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	int ret;
+
+	/*
+	 * SDR DLL comes into picture only for timing modes which needs
+	 * tuning.
+	 */
+	if (!sdhci_msm_is_tuning_needed(host))
+		return 0;
+
+	/* Reset the tuning block */
+	ret = msm_init_cm_dll(host);
+	if (ret)
+		return ret;
+
+	/* Restore the tuning block */
+	ret = msm_config_cm_dll_phase(host, msm_host->saved_tuning_phase);
+
+	return ret;
+}
+
+static void sdhci_msm_set_cdr(struct sdhci_host *host, bool enable)
+{
+	const struct sdhci_msm_offset *msm_offset = sdhci_priv_msm_offset(host);
+	u32 config, oldconfig = readl_relaxed(host->ioaddr +
+					      msm_offset->core_dll_config);
+
+	config = oldconfig;
+	if (enable) {
+		config |= CORE_CDR_EN;
+		config &= ~CORE_CDR_EXT_EN;
+	} else {
+		config &= ~CORE_CDR_EN;
+		config |= CORE_CDR_EXT_EN;
+	}
+
+	if (config != oldconfig) {
+		writel_relaxed(config, host->ioaddr +
+			       msm_offset->core_dll_config);
+	}
+}
+
+static int sdhci_msm_execute_tuning(struct mmc_host *mmc, u32 opcode)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	int tuning_seq_cnt = 10;
+	u8 phase, tuned_phases[16], tuned_phase_cnt = 0;
+	int rc;
+	struct mmc_ios ios = host->mmc->ios;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	if (!sdhci_msm_is_tuning_needed(host)) {
+		msm_host->use_cdr = false;
+		sdhci_msm_set_cdr(host, false);
+		return 0;
+	}
+
+	/* Clock-Data-Recovery used to dynamically adjust RX sampling point */
+	msm_host->use_cdr = true;
+
+	/*
+	 * Clear tuning_done flag before tuning to ensure proper
+	 * HS400 settings.
+	 */
+	msm_host->tuning_done = 0;
+
+	/*
+	 * For HS400 tuning in HS200 timing requires:
+	 * - select MCLK/2 in VENDOR_SPEC
+	 * - program MCLK to 400MHz (or nearest supported) in GCC
+	 */
+	if (host->flags & SDHCI_HS400_TUNING) {
+		sdhci_msm_hc_select_mode(host);
+		msm_set_clock_rate_for_bus_mode(host, ios.clock);
+		host->flags &= ~SDHCI_HS400_TUNING;
+	}
+
+retry:
+	/* First of all reset the tuning block */
+	rc = msm_init_cm_dll(host);
+	if (rc)
+		return rc;
+
+	phase = 0;
+	do {
+		/* Set the phase in delay line hw block */
+		rc = msm_config_cm_dll_phase(host, phase);
+		if (rc)
+			return rc;
+
+		rc = mmc_send_tuning(mmc, opcode, NULL);
+		if (!rc) {
+			/* Tuning is successful at this tuning point */
+			tuned_phases[tuned_phase_cnt++] = phase;
+			dev_dbg(mmc_dev(mmc), "%s: Found good phase = %d\n",
+				 mmc_hostname(mmc), phase);
+		}
+	} while (++phase < ARRAY_SIZE(tuned_phases));
+
+	if (tuned_phase_cnt) {
+		if (tuned_phase_cnt == ARRAY_SIZE(tuned_phases)) {
+			/*
+			 * All phases valid is _almost_ as bad as no phases
+			 * valid.  Probably all phases are not really reliable
+			 * but we didn't detect where the unreliable place is.
+			 * That means we'll essentially be guessing and hoping
+			 * we get a good phase.  Better to try a few times.
+			 */
+			dev_dbg(mmc_dev(mmc), "%s: All phases valid; try again\n",
+				mmc_hostname(mmc));
+			if (--tuning_seq_cnt) {
+				tuned_phase_cnt = 0;
+				goto retry;
+			}
+		}
+
+		rc = msm_find_most_appropriate_phase(host, tuned_phases,
+						     tuned_phase_cnt);
+		if (rc < 0)
+			return rc;
+		else
+			phase = rc;
+
+		/*
+		 * Finally set the selected phase in delay
+		 * line hw block.
+		 */
+		rc = msm_config_cm_dll_phase(host, phase);
+		if (rc)
+			return rc;
+		msm_host->saved_tuning_phase = phase;
+		dev_dbg(mmc_dev(mmc), "%s: Setting the tuning phase to %d\n",
+			 mmc_hostname(mmc), phase);
+	} else {
+		if (--tuning_seq_cnt)
+			goto retry;
+		/* Tuning failed */
+		dev_dbg(mmc_dev(mmc), "%s: No tuning point found\n",
+		       mmc_hostname(mmc));
+		rc = -EIO;
+	}
+
+	if (!rc)
+		msm_host->tuning_done = true;
+	return rc;
+}
+
+/*
+ * sdhci_msm_hs400 - Calibrate the DLL for HS400 bus speed mode operation.
+ * This needs to be done for both tuning and enhanced_strobe mode.
+ * DLL operation is only needed for clock > 100MHz. For clock <= 100MHz
+ * fixed feedback clock is used.
+ */
+static void sdhci_msm_hs400(struct sdhci_host *host, struct mmc_ios *ios)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	int ret;
+
+	if (host->clock > CORE_FREQ_100MHZ &&
+	    (msm_host->tuning_done || ios->enhanced_strobe) &&
+	    !msm_host->calibration_done) {
+		ret = sdhci_msm_hs400_dll_calibration(host);
+		if (!ret)
+			msm_host->calibration_done = true;
+		else
+			pr_err("%s: Failed to calibrate DLL for hs400 mode (%d)\n",
+			       mmc_hostname(host->mmc), ret);
+	}
+}
+
+static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
+					unsigned int uhs)
+{
+	struct mmc_host *mmc = host->mmc;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	u16 ctrl_2;
+	u32 config;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+	/* Select Bus Speed Mode for host */
+	ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
+	switch (uhs) {
+	case MMC_TIMING_UHS_SDR12:
+		ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
+		break;
+	case MMC_TIMING_UHS_SDR25:
+		ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
+		break;
+	case MMC_TIMING_UHS_SDR50:
+		ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
+		break;
+	case MMC_TIMING_MMC_HS400:
+	case MMC_TIMING_MMC_HS200:
+	case MMC_TIMING_UHS_SDR104:
+		ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
+		break;
+	case MMC_TIMING_UHS_DDR50:
+	case MMC_TIMING_MMC_DDR52:
+		ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
+		break;
+	}
+
+	/*
+	 * When clock frequency is less than 100MHz, the feedback clock must be
+	 * provided and DLL must not be used so that tuning can be skipped. To
+	 * provide feedback clock, the mode selection can be any value less
+	 * than 3'b011 in bits [2:0] of HOST CONTROL2 register.
+	 */
+	if (host->clock <= CORE_FREQ_100MHZ) {
+		if (uhs == MMC_TIMING_MMC_HS400 ||
+		    uhs == MMC_TIMING_MMC_HS200 ||
+		    uhs == MMC_TIMING_UHS_SDR104)
+			ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
+		/*
+		 * DLL is not required for clock <= 100MHz
+		 * Thus, make sure DLL it is disabled when not required
+		 */
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config);
+		config |= CORE_DLL_RST;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config);
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_dll_config);
+		config |= CORE_DLL_PDN;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_dll_config);
+
+		/*
+		 * The DLL needs to be restored and CDCLP533 recalibrated
+		 * when the clock frequency is set back to 400MHz.
+		 */
+		msm_host->calibration_done = false;
+	}
+
+	dev_dbg(mmc_dev(mmc), "%s: clock=%u uhs=%u ctrl_2=0x%x\n",
+		mmc_hostname(host->mmc), host->clock, uhs, ctrl_2);
+	sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
+
+	if (mmc->ios.timing == MMC_TIMING_MMC_HS400)
+		sdhci_msm_hs400(host, &mmc->ios);
+}
+
+static int sdhci_msm_set_pincfg(struct sdhci_msm_host *msm_host, bool level)
+{
+	struct platform_device *pdev = msm_host->pdev;
+	int ret;
+
+	if (level)
+		ret = pinctrl_pm_select_default_state(&pdev->dev);
+	else
+		ret = pinctrl_pm_select_sleep_state(&pdev->dev);
+
+	return ret;
+}
+
+static int sdhci_msm_set_vmmc(struct mmc_host *mmc)
+{
+	if (IS_ERR(mmc->supply.vmmc))
+		return 0;
+
+	return mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, mmc->ios.vdd);
+}
+
+static int msm_toggle_vqmmc(struct sdhci_msm_host *msm_host,
+			      struct mmc_host *mmc, bool level)
+{
+	int ret;
+	struct mmc_ios ios;
+
+	if (msm_host->vqmmc_enabled == level)
+		return 0;
+
+	if (level) {
+		/* Set the IO voltage regulator to default voltage level */
+		if (msm_host->caps_0 & CORE_3_0V_SUPPORT)
+			ios.signal_voltage = MMC_SIGNAL_VOLTAGE_330;
+		else if (msm_host->caps_0 & CORE_1_8V_SUPPORT)
+			ios.signal_voltage = MMC_SIGNAL_VOLTAGE_180;
+
+		if (msm_host->caps_0 & CORE_VOLT_SUPPORT) {
+			ret = mmc_regulator_set_vqmmc(mmc, &ios);
+			if (ret < 0) {
+				dev_err(mmc_dev(mmc), "%s: vqmmc set volgate failed: %d\n",
+					mmc_hostname(mmc), ret);
+				goto out;
+			}
+		}
+		ret = regulator_enable(mmc->supply.vqmmc);
+	} else {
+		ret = regulator_disable(mmc->supply.vqmmc);
+	}
+
+	if (ret)
+		dev_err(mmc_dev(mmc), "%s: vqmm %sable failed: %d\n",
+			mmc_hostname(mmc), level ? "en":"dis", ret);
+	else
+		msm_host->vqmmc_enabled = level;
+out:
+	return ret;
+}
+
+static int msm_config_vqmmc_mode(struct sdhci_msm_host *msm_host,
+			      struct mmc_host *mmc, bool hpm)
+{
+	int load, ret;
+
+	load = hpm ? MMC_VQMMC_MAX_LOAD_UA : 0;
+	ret = regulator_set_load(mmc->supply.vqmmc, load);
+	if (ret)
+		dev_err(mmc_dev(mmc), "%s: vqmmc set load failed: %d\n",
+			mmc_hostname(mmc), ret);
+	return ret;
+}
+
+static int sdhci_msm_set_vqmmc(struct sdhci_msm_host *msm_host,
+			      struct mmc_host *mmc, bool level)
+{
+	int ret;
+	bool always_on;
+
+	if (IS_ERR(mmc->supply.vqmmc) ||
+			(mmc->ios.power_mode == MMC_POWER_UNDEFINED))
+		return 0;
+	/*
+	 * For eMMC don't turn off Vqmmc, Instead just configure it in LPM
+	 * and HPM modes by setting the corresponding load.
+	 *
+	 * Till eMMC is initialized (i.e. always_on == 0), just turn on/off
+	 * Vqmmc. Vqmmc gets turned off only if init fails and mmc_power_off
+	 * gets invoked. Once eMMC is initialized (i.e. always_on == 1),
+	 * Vqmmc should remain ON, So just set the load instead of turning it
+	 * off/on.
+	 */
+	always_on = !mmc_card_is_removable(mmc) &&
+			mmc->card && mmc_card_mmc(mmc->card);
+
+	if (always_on)
+		ret = msm_config_vqmmc_mode(msm_host, mmc, level);
+	else
+		ret = msm_toggle_vqmmc(msm_host, mmc, level);
+
+	return ret;
+}
+
+static inline void sdhci_msm_init_pwr_irq_wait(struct sdhci_msm_host *msm_host)
+{
+	init_waitqueue_head(&msm_host->pwr_irq_wait);
+}
+
+static inline void sdhci_msm_complete_pwr_irq_wait(
+		struct sdhci_msm_host *msm_host)
+{
+	wake_up(&msm_host->pwr_irq_wait);
+}
+
+/*
+ * sdhci_msm_check_power_status API should be called when registers writes
+ * which can toggle sdhci IO bus ON/OFF or change IO lines HIGH/LOW happens.
+ * To what state the register writes will change the IO lines should be passed
+ * as the argument req_type. This API will check whether the IO line's state
+ * is already the expected state and will wait for power irq only if
+ * power irq is expected to be triggered based on the current IO line state
+ * and expected IO line state.
+ */
+static void sdhci_msm_check_power_status(struct sdhci_host *host, u32 req_type)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	bool done = false;
+	u32 val = SWITCHABLE_SIGNALING_VOLTAGE;
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	pr_debug("%s: %s: request %d curr_pwr_state %x curr_io_level %x\n",
+			mmc_hostname(host->mmc), __func__, req_type,
+			msm_host->curr_pwr_state, msm_host->curr_io_level);
+
+	/*
+	 * The power interrupt will not be generated for signal voltage
+	 * switches if SWITCHABLE_SIGNALING_VOLTAGE in MCI_GENERICS is not set.
+	 * Since sdhci-msm-v5, this bit has been removed and SW must consider
+	 * it as always set.
+	 */
+	if (!msm_host->mci_removed)
+		val = msm_host_readl(msm_host, host,
+				msm_offset->core_generics);
+	if ((req_type & REQ_IO_HIGH || req_type & REQ_IO_LOW) &&
+	    !(val & SWITCHABLE_SIGNALING_VOLTAGE)) {
+		return;
+	}
+
+	/*
+	 * The IRQ for request type IO High/LOW will be generated when -
+	 * there is a state change in 1.8V enable bit (bit 3) of
+	 * SDHCI_HOST_CONTROL2 register. The reset state of that bit is 0
+	 * which indicates 3.3V IO voltage. So, when MMC core layer tries
+	 * to set it to 3.3V before card detection happens, the
+	 * IRQ doesn't get triggered as there is no state change in this bit.
+	 * The driver already handles this case by changing the IO voltage
+	 * level to high as part of controller power up sequence. Hence, check
+	 * for host->pwr to handle a case where IO voltage high request is
+	 * issued even before controller power up.
+	 */
+	if ((req_type & REQ_IO_HIGH) && !host->pwr) {
+		pr_debug("%s: do not wait for power IRQ that never comes, req_type: %d\n",
+				mmc_hostname(host->mmc), req_type);
+		return;
+	}
+	if ((req_type & msm_host->curr_pwr_state) ||
+			(req_type & msm_host->curr_io_level))
+		done = true;
+	/*
+	 * This is needed here to handle cases where register writes will
+	 * not change the current bus state or io level of the controller.
+	 * In this case, no power irq will be triggerred and we should
+	 * not wait.
+	 */
+	if (!done) {
+		if (!wait_event_timeout(msm_host->pwr_irq_wait,
+				msm_host->pwr_irq_flag,
+				msecs_to_jiffies(MSM_PWR_IRQ_TIMEOUT_MS)))
+			dev_warn(&msm_host->pdev->dev,
+				 "%s: pwr_irq for req: (%d) timed out\n",
+				 mmc_hostname(host->mmc), req_type);
+	}
+	pr_debug("%s: %s: request %d done\n", mmc_hostname(host->mmc),
+			__func__, req_type);
+}
+
+static void sdhci_msm_dump_pwr_ctrl_regs(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	const struct sdhci_msm_offset *msm_offset =
+					msm_host->offset;
+
+	pr_err("%s: PWRCTL_STATUS: 0x%08x | PWRCTL_MASK: 0x%08x | PWRCTL_CTL: 0x%08x\n",
+		mmc_hostname(host->mmc),
+		msm_host_readl(msm_host, host, msm_offset->core_pwrctl_status),
+		msm_host_readl(msm_host, host, msm_offset->core_pwrctl_mask),
+		msm_host_readl(msm_host, host, msm_offset->core_pwrctl_ctl));
+}
+
+static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct mmc_host *mmc = host->mmc;
+	u32 irq_status, irq_ack = 0;
+	int retry = 10, ret;
+	u32 pwr_state = 0, io_level = 0;
+	u32 config;
+	const struct sdhci_msm_offset *msm_offset = msm_host->offset;
+
+	irq_status = msm_host_readl(msm_host, host,
+			msm_offset->core_pwrctl_status);
+	irq_status &= INT_MASK;
+
+	msm_host_writel(msm_host, irq_status, host,
+			msm_offset->core_pwrctl_clear);
+
+	/*
+	 * There is a rare HW scenario where the first clear pulse could be
+	 * lost when actual reset and clear/read of status register is
+	 * happening at a time. Hence, retry for at least 10 times to make
+	 * sure status register is cleared. Otherwise, this will result in
+	 * a spurious power IRQ resulting in system instability.
+	 */
+	while (irq_status & msm_host_readl(msm_host, host,
+				msm_offset->core_pwrctl_status)) {
+		if (retry == 0) {
+			pr_err("%s: Timedout clearing (0x%x) pwrctl status register\n",
+					mmc_hostname(host->mmc), irq_status);
+			sdhci_msm_dump_pwr_ctrl_regs(host);
+			WARN_ON(1);
+			break;
+		}
+		msm_host_writel(msm_host, irq_status, host,
+			msm_offset->core_pwrctl_clear);
+		retry--;
+		udelay(10);
+	}
+
+	/* Handle BUS ON/OFF*/
+	if (irq_status & CORE_PWRCTL_BUS_ON) {
+		pwr_state = REQ_BUS_ON;
+		io_level = REQ_IO_HIGH;
+	}
+	if (irq_status & CORE_PWRCTL_BUS_OFF) {
+		pwr_state = REQ_BUS_OFF;
+		io_level = REQ_IO_LOW;
+	}
+
+	if (pwr_state) {
+		ret = sdhci_msm_set_vmmc(mmc);
+		if (!ret)
+			ret = sdhci_msm_set_vqmmc(msm_host, mmc,
+					pwr_state & REQ_BUS_ON);
+		if (!ret)
+			ret = sdhci_msm_set_pincfg(msm_host,
+					pwr_state & REQ_BUS_ON);
+		if (!ret)
+			irq_ack |= CORE_PWRCTL_BUS_SUCCESS;
+		else
+			irq_ack |= CORE_PWRCTL_BUS_FAIL;
+	}
+
+	/* Handle IO LOW/HIGH */
+	if (irq_status & CORE_PWRCTL_IO_LOW)
+		io_level = REQ_IO_LOW;
+
+	if (irq_status & CORE_PWRCTL_IO_HIGH)
+		io_level = REQ_IO_HIGH;
+
+	if (io_level)
+		irq_ack |= CORE_PWRCTL_IO_SUCCESS;
+
+	if (io_level && !IS_ERR(mmc->supply.vqmmc) && !pwr_state) {
+		ret = mmc_regulator_set_vqmmc(mmc, &mmc->ios);
+		if (ret < 0) {
+			dev_err(mmc_dev(mmc), "%s: IO_level setting failed(%d). signal_voltage: %d, vdd: %d irq_status: 0x%08x\n",
+					mmc_hostname(mmc), ret,
+					mmc->ios.signal_voltage, mmc->ios.vdd,
+					irq_status);
+			irq_ack |= CORE_PWRCTL_IO_FAIL;
+		}
+	}
+
+	/*
+	 * The driver has to acknowledge the interrupt, switch voltages and
+	 * report back if it succeded or not to this register. The voltage
+	 * switches are handled by the sdhci core, so just report success.
+	 */
+	msm_host_writel(msm_host, irq_ack, host,
+			msm_offset->core_pwrctl_ctl);
+
+	/*
+	 * If we don't have info regarding the voltage levels supported by
+	 * regulators, don't change the IO PAD PWR SWITCH.
+	 */
+	if (msm_host->caps_0 & CORE_VOLT_SUPPORT) {
+		u32 new_config;
+		/*
+		 * We should unset IO PAD PWR switch only if the register write
+		 * can set IO lines high and the regulator also switches to 3 V.
+		 * Else, we should keep the IO PAD PWR switch set.
+		 * This is applicable to certain targets where eMMC vccq supply
+		 * is only 1.8V. In such targets, even during REQ_IO_HIGH, the
+		 * IO PAD PWR switch must be kept set to reflect actual
+		 * regulator voltage. This way, during initialization of
+		 * controllers with only 1.8V, we will set the IO PAD bit
+		 * without waiting for a REQ_IO_LOW.
+		 */
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_vendor_spec);
+		new_config = config;
+
+		if ((io_level & REQ_IO_HIGH) &&
+				(msm_host->caps_0 & CORE_3_0V_SUPPORT))
+			new_config &= ~CORE_IO_PAD_PWR_SWITCH;
+		else if ((io_level & REQ_IO_LOW) ||
+				(msm_host->caps_0 & CORE_1_8V_SUPPORT))
+			new_config |= CORE_IO_PAD_PWR_SWITCH;
+
+		if (config ^ new_config)
+			writel_relaxed(new_config, host->ioaddr +
+					msm_offset->core_vendor_spec);
+	}
+
+	if (pwr_state)
+		msm_host->curr_pwr_state = pwr_state;
+	if (io_level)
+		msm_host->curr_io_level = io_level;
+
+	dev_dbg(mmc_dev(mmc), "%s: %s: Handled IRQ(%d), irq_status=0x%x, ack=0x%x\n",
+		mmc_hostname(msm_host->mmc), __func__, irq, irq_status,
+		irq_ack);
+}
+
+static irqreturn_t sdhci_msm_pwr_irq(int irq, void *data)
+{
+	struct sdhci_host *host = (struct sdhci_host *)data;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	sdhci_msm_handle_pwr_irq(host, irq);
+	msm_host->pwr_irq_flag = 1;
+	sdhci_msm_complete_pwr_irq_wait(msm_host);
+
+
+	return IRQ_HANDLED;
+}
+
+static unsigned int sdhci_msm_get_max_clock(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct clk *core_clk = msm_host->bulk_clks[0].clk;
+
+	return clk_round_rate(core_clk, ULONG_MAX);
+}
+
+static unsigned int sdhci_msm_get_min_clock(struct sdhci_host *host)
+{
+	return SDHCI_MSM_MIN_CLOCK;
+}
+
+/*
+ * __sdhci_msm_set_clock - sdhci_msm clock control.
+ *
+ * Description:
+ * MSM controller does not use internal divider and
+ * instead directly control the GCC clock as per
+ * HW recommendation.
+ **/
+static void __sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+	u16 clk;
+
+	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+	if (clock == 0)
+		return;
+
+	/*
+	 * MSM controller do not use clock divider.
+	 * Thus read SDHCI_CLOCK_CONTROL and only enable
+	 * clock with no divider value programmed.
+	 */
+	clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+	sdhci_enable_clk(host, clk);
+}
+
+/* sdhci_msm_set_clock - Called with (host->lock) spinlock held. */
+static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	if (!clock) {
+		host->mmc->actual_clock = msm_host->clk_rate = 0;
+		goto out;
+	}
+
+	sdhci_msm_hc_select_mode(host);
+
+	msm_set_clock_rate_for_bus_mode(host, clock);
+out:
+	__sdhci_msm_set_clock(host, clock);
+}
+
+/*****************************************************************************\
+ *                                                                           *
+ * Inline Crypto Engine (ICE) support                                        *
+ *                                                                           *
+\*****************************************************************************/
+
+#ifdef CONFIG_MMC_CRYPTO
+
+#define AES_256_XTS_KEY_SIZE			64
+
+/* QCOM ICE registers */
+
+#define QCOM_ICE_REG_VERSION			0x0008
+
+#define QCOM_ICE_REG_FUSE_SETTING		0x0010
+#define QCOM_ICE_FUSE_SETTING_MASK		0x1
+#define QCOM_ICE_FORCE_HW_KEY0_SETTING_MASK	0x2
+#define QCOM_ICE_FORCE_HW_KEY1_SETTING_MASK	0x4
+
+#define QCOM_ICE_REG_BIST_STATUS		0x0070
+#define QCOM_ICE_BIST_STATUS_MASK		0xF0000000
+
+#define QCOM_ICE_REG_ADVANCED_CONTROL		0x1000
+
+#define sdhci_msm_ice_writel(host, val, reg)	\
+	writel((val), (host)->ice_mem + (reg))
+#define sdhci_msm_ice_readl(host, reg)	\
+	readl((host)->ice_mem + (reg))
+
+static bool sdhci_msm_ice_supported(struct sdhci_msm_host *msm_host)
+{
+	struct device *dev = mmc_dev(msm_host->mmc);
+	u32 regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_VERSION);
+	int major = regval >> 24;
+	int minor = (regval >> 16) & 0xFF;
+	int step = regval & 0xFFFF;
+
+	/* For now this driver only supports ICE version 3. */
+	if (major != 3) {
+		dev_warn(dev, "Unsupported ICE version: v%d.%d.%d\n",
+			 major, minor, step);
+		return false;
+	}
+
+	dev_info(dev, "Found QC Inline Crypto Engine (ICE) v%d.%d.%d\n",
+		 major, minor, step);
+
+	/* If fuses are blown, ICE might not work in the standard way. */
+	regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_FUSE_SETTING);
+	if (regval & (QCOM_ICE_FUSE_SETTING_MASK |
+		      QCOM_ICE_FORCE_HW_KEY0_SETTING_MASK |
+		      QCOM_ICE_FORCE_HW_KEY1_SETTING_MASK)) {
+		dev_warn(dev, "Fuses are blown; ICE is unusable!\n");
+		return false;
+	}
+	return true;
+}
+
+static inline struct clk *sdhci_msm_ice_get_clk(struct device *dev)
+{
+	return devm_clk_get(dev, "ice");
+}
+
+static int sdhci_msm_ice_init(struct sdhci_msm_host *msm_host,
+			      struct cqhci_host *cq_host)
+{
+	struct mmc_host *mmc = msm_host->mmc;
+	struct device *dev = mmc_dev(mmc);
+	struct resource *res;
+
+	if (!(cqhci_readl(cq_host, CQHCI_CAP) & CQHCI_CAP_CS))
+		return 0;
+
+	res = platform_get_resource_byname(msm_host->pdev, IORESOURCE_MEM,
+					   "ice");
+	if (!res) {
+		dev_warn(dev, "ICE registers not found\n");
+		goto disable;
+	}
+
+	if (!qcom_scm_ice_available()) {
+		dev_warn(dev, "ICE SCM interface not found\n");
+		goto disable;
+	}
+
+	msm_host->ice_mem = devm_ioremap_resource(dev, res);
+	if (IS_ERR(msm_host->ice_mem))
+		return PTR_ERR(msm_host->ice_mem);
+
+	if (!sdhci_msm_ice_supported(msm_host))
+		goto disable;
+
+	mmc->caps2 |= MMC_CAP2_CRYPTO;
+	return 0;
+
+disable:
+	dev_warn(dev, "Disabling inline encryption support\n");
+	return 0;
+}
+
+static void sdhci_msm_ice_low_power_mode_enable(struct sdhci_msm_host *msm_host)
+{
+	u32 regval;
+
+	regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_ADVANCED_CONTROL);
+	/*
+	 * Enable low power mode sequence
+	 * [0]-0, [1]-0, [2]-0, [3]-E, [4]-0, [5]-0, [6]-0, [7]-0
+	 */
+	regval |= 0x7000;
+	sdhci_msm_ice_writel(msm_host, regval, QCOM_ICE_REG_ADVANCED_CONTROL);
+}
+
+static void sdhci_msm_ice_optimization_enable(struct sdhci_msm_host *msm_host)
+{
+	u32 regval;
+
+	/* ICE Optimizations Enable Sequence */
+	regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_ADVANCED_CONTROL);
+	regval |= 0xD807100;
+	/* ICE HPG requires delay before writing */
+	udelay(5);
+	sdhci_msm_ice_writel(msm_host, regval, QCOM_ICE_REG_ADVANCED_CONTROL);
+	udelay(5);
+}
+
+/*
+ * Wait until the ICE BIST (built-in self-test) has completed.
+ *
+ * This may be necessary before ICE can be used.
+ *
+ * Note that we don't really care whether the BIST passed or failed; we really
+ * just want to make sure that it isn't still running.  This is because (a) the
+ * BIST is a FIPS compliance thing that never fails in practice, (b) ICE is
+ * documented to reject crypto requests if the BIST fails, so we needn't do it
+ * in software too, and (c) properly testing storage encryption requires testing
+ * the full storage stack anyway, and not relying on hardware-level self-tests.
+ */
+static int sdhci_msm_ice_wait_bist_status(struct sdhci_msm_host *msm_host)
+{
+	u32 regval;
+	int err;
+
+	err = readl_poll_timeout(msm_host->ice_mem + QCOM_ICE_REG_BIST_STATUS,
+				 regval, !(regval & QCOM_ICE_BIST_STATUS_MASK),
+				 50, 5000);
+	if (err)
+		dev_err(mmc_dev(msm_host->mmc),
+			"Timed out waiting for ICE self-test to complete\n");
+	return err;
+}
+
+static void sdhci_msm_ice_enable(struct sdhci_msm_host *msm_host)
+{
+	if (!(msm_host->mmc->caps2 & MMC_CAP2_CRYPTO))
+		return;
+	sdhci_msm_ice_low_power_mode_enable(msm_host);
+	sdhci_msm_ice_optimization_enable(msm_host);
+	sdhci_msm_ice_wait_bist_status(msm_host);
+}
+
+static int __maybe_unused sdhci_msm_ice_resume(struct sdhci_msm_host *msm_host)
+{
+	if (!(msm_host->mmc->caps2 & MMC_CAP2_CRYPTO))
+		return 0;
+	return sdhci_msm_ice_wait_bist_status(msm_host);
+}
+
+/*
+ * Program a key into a QC ICE keyslot, or evict a keyslot.  QC ICE requires
+ * vendor-specific SCM calls for this; it doesn't support the standard way.
+ */
+static int sdhci_msm_program_key(struct cqhci_host *cq_host,
+				 const union cqhci_crypto_cfg_entry *cfg,
+				 int slot)
+{
+	struct device *dev = mmc_dev(cq_host->mmc);
+	union cqhci_crypto_cap_entry cap;
+	union {
+		u8 bytes[AES_256_XTS_KEY_SIZE];
+		u32 words[AES_256_XTS_KEY_SIZE / sizeof(u32)];
+	} key;
+	int i;
+	int err;
+
+	if (!(cfg->config_enable & CQHCI_CRYPTO_CONFIGURATION_ENABLE))
+		return qcom_scm_ice_invalidate_key(slot);
+
+	/* Only AES-256-XTS has been tested so far. */
+	cap = cq_host->crypto_cap_array[cfg->crypto_cap_idx];
+	if (cap.algorithm_id != CQHCI_CRYPTO_ALG_AES_XTS ||
+	    cap.key_size != CQHCI_CRYPTO_KEY_SIZE_256) {
+		dev_err_ratelimited(dev,
+				    "Unhandled crypto capability; algorithm_id=%d, key_size=%d\n",
+				    cap.algorithm_id, cap.key_size);
+		return -EINVAL;
+	}
+
+	memcpy(key.bytes, cfg->crypto_key, AES_256_XTS_KEY_SIZE);
+
+	/*
+	 * The SCM call byte-swaps the 32-bit words of the key.  So we have to
+	 * do the same, in order for the final key be correct.
+	 */
+	for (i = 0; i < ARRAY_SIZE(key.words); i++)
+		__cpu_to_be32s(&key.words[i]);
+
+	err = qcom_scm_ice_set_key(slot, key.bytes, AES_256_XTS_KEY_SIZE,
+				   QCOM_SCM_ICE_CIPHER_AES_256_XTS,
+				   cfg->data_unit_size);
+	memzero_explicit(&key, sizeof(key));
+	return err;
+}
+#else /* CONFIG_MMC_CRYPTO */
+static inline struct clk *sdhci_msm_ice_get_clk(struct device *dev)
+{
+	return NULL;
+}
+
+static inline int sdhci_msm_ice_init(struct sdhci_msm_host *msm_host,
+				     struct cqhci_host *cq_host)
+{
+	return 0;
+}
+
+static inline void sdhci_msm_ice_enable(struct sdhci_msm_host *msm_host)
+{
+}
+
+static inline int __maybe_unused
+sdhci_msm_ice_resume(struct sdhci_msm_host *msm_host)
+{
+	return 0;
+}
+#endif /* !CONFIG_MMC_CRYPTO */
+
+/*****************************************************************************\
+ *                                                                           *
+ * MSM Command Queue Engine (CQE)                                            *
+ *                                                                           *
+\*****************************************************************************/
+
+static u32 sdhci_msm_cqe_irq(struct sdhci_host *host, u32 intmask)
+{
+	int cmd_error = 0;
+	int data_error = 0;
+
+	if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
+		return intmask;
+
+	cqhci_irq(host->mmc, intmask, cmd_error, data_error);
+	return 0;
+}
+
+static void sdhci_msm_cqe_enable(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	sdhci_cqe_enable(mmc);
+	sdhci_msm_ice_enable(msm_host);
+}
+
+static void sdhci_msm_cqe_disable(struct mmc_host *mmc, bool recovery)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	unsigned long flags;
+	u32 ctrl;
+
+	/*
+	 * When CQE is halted, the legacy SDHCI path operates only
+	 * on 16-byte descriptors in 64bit mode.
+	 */
+	if (host->flags & SDHCI_USE_64_BIT_DMA)
+		host->desc_sz = 16;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	/*
+	 * During CQE command transfers, command complete bit gets latched.
+	 * So s/w should clear command complete interrupt status when CQE is
+	 * either halted or disabled. Otherwise unexpected SDCHI legacy
+	 * interrupt gets triggered when CQE is halted/disabled.
+	 */
+	ctrl = sdhci_readl(host, SDHCI_INT_ENABLE);
+	ctrl |= SDHCI_INT_RESPONSE;
+	sdhci_writel(host,  ctrl, SDHCI_INT_ENABLE);
+	sdhci_writel(host, SDHCI_INT_RESPONSE, SDHCI_INT_STATUS);
+
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	sdhci_cqe_disable(mmc, recovery);
+}
+
+static void sdhci_msm_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
+{
+	u32 count, start = 15;
+
+	__sdhci_set_timeout(host, cmd);
+	count = sdhci_readb(host, SDHCI_TIMEOUT_CONTROL);
+	/*
+	 * Update software timeout value if its value is less than hardware data
+	 * timeout value. Qcom SoC hardware data timeout value was calculated
+	 * using 4 * MCLK * 2^(count + 13). where MCLK = 1 / host->clock.
+	 */
+	if (cmd && cmd->data && host->clock > 400000 &&
+	    host->clock <= 50000000 &&
+	    ((1 << (count + start)) > (10 * host->clock)))
+		host->data_timeout = 22LL * NSEC_PER_SEC;
+}
+
+static const struct cqhci_host_ops sdhci_msm_cqhci_ops = {
+	.enable		= sdhci_msm_cqe_enable,
+	.disable	= sdhci_msm_cqe_disable,
+#ifdef CONFIG_MMC_CRYPTO
+	.program_key	= sdhci_msm_program_key,
+#endif
+};
+
+static int sdhci_msm_cqe_add_host(struct sdhci_host *host,
+				struct platform_device *pdev)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	struct cqhci_host *cq_host;
+	bool dma64;
+	u32 cqcfg;
+	int ret;
+
+	/*
+	 * When CQE is halted, SDHC operates only on 16byte ADMA descriptors.
+	 * So ensure ADMA table is allocated for 16byte descriptors.
+	 */
+	if (host->caps & SDHCI_CAN_64BIT)
+		host->alloc_desc_sz = 16;
+
+	ret = sdhci_setup_host(host);
+	if (ret)
+		return ret;
+
+	cq_host = cqhci_pltfm_init(pdev);
+	if (IS_ERR(cq_host)) {
+		ret = PTR_ERR(cq_host);
+		dev_err(&pdev->dev, "cqhci-pltfm init: failed: %d\n", ret);
+		goto cleanup;
+	}
+
+	msm_host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
+	cq_host->ops = &sdhci_msm_cqhci_ops;
+
+	dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
+
+	ret = sdhci_msm_ice_init(msm_host, cq_host);
+	if (ret)
+		goto cleanup;
+
+	ret = cqhci_init(cq_host, host->mmc, dma64);
+	if (ret) {
+		dev_err(&pdev->dev, "%s: CQE init: failed (%d)\n",
+				mmc_hostname(host->mmc), ret);
+		goto cleanup;
+	}
+
+	/* Disable cqe reset due to cqe enable signal */
+	cqcfg = cqhci_readl(cq_host, CQHCI_VENDOR_CFG1);
+	cqcfg |= CQHCI_VENDOR_DIS_RST_ON_CQ_EN;
+	cqhci_writel(cq_host, cqcfg, CQHCI_VENDOR_CFG1);
+
+	/*
+	 * SDHC expects 12byte ADMA descriptors till CQE is enabled.
+	 * So limit desc_sz to 12 so that the data commands that are sent
+	 * during card initialization (before CQE gets enabled) would
+	 * get executed without any issues.
+	 */
+	if (host->flags & SDHCI_USE_64_BIT_DMA)
+		host->desc_sz = 12;
+
+	ret = __sdhci_add_host(host);
+	if (ret)
+		goto cleanup;
+
+	dev_info(&pdev->dev, "%s: CQE init: success\n",
+			mmc_hostname(host->mmc));
+	return ret;
+
+cleanup:
+	sdhci_cleanup_host(host);
+	return ret;
+}
+
+/*
+ * Platform specific register write functions. This is so that, if any
+ * register write needs to be followed up by platform specific actions,
+ * they can be added here. These functions can go to sleep when writes
+ * to certain registers are done.
+ * These functions are relying on sdhci_set_ios not using spinlock.
+ */
+static int __sdhci_msm_check_write(struct sdhci_host *host, u16 val, int reg)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	u32 req_type = 0;
+
+	switch (reg) {
+	case SDHCI_HOST_CONTROL2:
+		req_type = (val & SDHCI_CTRL_VDD_180) ? REQ_IO_LOW :
+			REQ_IO_HIGH;
+		break;
+	case SDHCI_SOFTWARE_RESET:
+		if (host->pwr && (val & SDHCI_RESET_ALL))
+			req_type = REQ_BUS_OFF;
+		break;
+	case SDHCI_POWER_CONTROL:
+		req_type = !val ? REQ_BUS_OFF : REQ_BUS_ON;
+		break;
+	case SDHCI_TRANSFER_MODE:
+		msm_host->transfer_mode = val;
+		break;
+	case SDHCI_COMMAND:
+		if (!msm_host->use_cdr)
+			break;
+		if ((msm_host->transfer_mode & SDHCI_TRNS_READ) &&
+		    SDHCI_GET_CMD(val) != MMC_SEND_TUNING_BLOCK_HS200 &&
+		    SDHCI_GET_CMD(val) != MMC_SEND_TUNING_BLOCK)
+			sdhci_msm_set_cdr(host, true);
+		else
+			sdhci_msm_set_cdr(host, false);
+		break;
+	}
+
+	if (req_type) {
+		msm_host->pwr_irq_flag = 0;
+		/*
+		 * Since this register write may trigger a power irq, ensure
+		 * all previous register writes are complete by this point.
+		 */
+		mb();
+	}
+	return req_type;
+}
+
+/* This function may sleep*/
+static void sdhci_msm_writew(struct sdhci_host *host, u16 val, int reg)
+{
+	u32 req_type = 0;
+
+	req_type = __sdhci_msm_check_write(host, val, reg);
+	writew_relaxed(val, host->ioaddr + reg);
+
+	if (req_type)
+		sdhci_msm_check_power_status(host, req_type);
+}
+
+/* This function may sleep*/
+static void sdhci_msm_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+	u32 req_type = 0;
+
+	req_type = __sdhci_msm_check_write(host, val, reg);
+
+	writeb_relaxed(val, host->ioaddr + reg);
+
+	if (req_type)
+		sdhci_msm_check_power_status(host, req_type);
+}
+
+static void sdhci_msm_set_regulator_caps(struct sdhci_msm_host *msm_host)
+{
+	struct mmc_host *mmc = msm_host->mmc;
+	struct regulator *supply = mmc->supply.vqmmc;
+	u32 caps = 0, config;
+	struct sdhci_host *host = mmc_priv(mmc);
+	const struct sdhci_msm_offset *msm_offset = msm_host->offset;
+
+	if (!IS_ERR(mmc->supply.vqmmc)) {
+		if (regulator_is_supported_voltage(supply, 1700000, 1950000))
+			caps |= CORE_1_8V_SUPPORT;
+		if (regulator_is_supported_voltage(supply, 2700000, 3600000))
+			caps |= CORE_3_0V_SUPPORT;
+
+		if (!caps)
+			pr_warn("%s: 1.8/3V not supported for vqmmc\n",
+					mmc_hostname(mmc));
+	}
+
+	if (caps) {
+		/*
+		 * Set the PAD_PWR_SWITCH_EN bit so that the PAD_PWR_SWITCH
+		 * bit can be used as required later on.
+		 */
+		u32 io_level = msm_host->curr_io_level;
+
+		config = readl_relaxed(host->ioaddr +
+				msm_offset->core_vendor_spec);
+		config |= CORE_IO_PAD_PWR_SWITCH_EN;
+
+		if ((io_level & REQ_IO_HIGH) && (caps &	CORE_3_0V_SUPPORT))
+			config &= ~CORE_IO_PAD_PWR_SWITCH;
+		else if ((io_level & REQ_IO_LOW) || (caps & CORE_1_8V_SUPPORT))
+			config |= CORE_IO_PAD_PWR_SWITCH;
+
+		writel_relaxed(config,
+				host->ioaddr + msm_offset->core_vendor_spec);
+	}
+	msm_host->caps_0 |= caps;
+	pr_debug("%s: supported caps: 0x%08x\n", mmc_hostname(mmc), caps);
+}
+
+static void sdhci_msm_reset(struct sdhci_host *host, u8 mask)
+{
+	if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL))
+		cqhci_deactivate(host->mmc);
+	sdhci_reset(host, mask);
+}
+
+static int sdhci_msm_register_vreg(struct sdhci_msm_host *msm_host)
+{
+	int ret;
+
+	ret = mmc_regulator_get_supply(msm_host->mmc);
+	if (ret)
+		return ret;
+
+	sdhci_msm_set_regulator_caps(msm_host);
+
+	return 0;
+}
+
+static int sdhci_msm_start_signal_voltage_switch(struct mmc_host *mmc,
+				      struct mmc_ios *ios)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	u16 ctrl, status;
+
+	/*
+	 * Signal Voltage Switching is only applicable for Host Controllers
+	 * v3.00 and above.
+	 */
+	if (host->version < SDHCI_SPEC_300)
+		return 0;
+
+	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+
+	switch (ios->signal_voltage) {
+	case MMC_SIGNAL_VOLTAGE_330:
+		if (!(host->flags & SDHCI_SIGNALING_330))
+			return -EINVAL;
+
+		/* Set 1.8V Signal Enable in the Host Control2 register to 0 */
+		ctrl &= ~SDHCI_CTRL_VDD_180;
+		break;
+	case MMC_SIGNAL_VOLTAGE_180:
+		if (!(host->flags & SDHCI_SIGNALING_180))
+			return -EINVAL;
+
+		/* Enable 1.8V Signal Enable in the Host Control2 register */
+		ctrl |= SDHCI_CTRL_VDD_180;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+
+	/* Wait for 5ms */
+	usleep_range(5000, 5500);
+
+	/* regulator output should be stable within 5 ms */
+	status = ctrl & SDHCI_CTRL_VDD_180;
+	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+	if ((ctrl & SDHCI_CTRL_VDD_180) == status)
+		return 0;
+
+	dev_warn(mmc_dev(mmc), "%s: Regulator output did not became stable\n",
+		mmc_hostname(mmc));
+
+	return -EAGAIN;
+}
+
+#define DRIVER_NAME "sdhci_msm"
+#define SDHCI_MSM_DUMP(f, x...) \
+	pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
+
+static void sdhci_msm_dump_vendor_regs(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	const struct sdhci_msm_offset *msm_offset = msm_host->offset;
+
+	SDHCI_MSM_DUMP("----------- VENDOR REGISTER DUMP -----------\n");
+
+	SDHCI_MSM_DUMP(
+			"DLL sts: 0x%08x | DLL cfg:  0x%08x | DLL cfg2: 0x%08x\n",
+		readl_relaxed(host->ioaddr + msm_offset->core_dll_status),
+		readl_relaxed(host->ioaddr + msm_offset->core_dll_config),
+		readl_relaxed(host->ioaddr + msm_offset->core_dll_config_2));
+	SDHCI_MSM_DUMP(
+			"DLL cfg3: 0x%08x | DLL usr ctl:  0x%08x | DDR cfg: 0x%08x\n",
+		readl_relaxed(host->ioaddr + msm_offset->core_dll_config_3),
+		readl_relaxed(host->ioaddr + msm_offset->core_dll_usr_ctl),
+		readl_relaxed(host->ioaddr + msm_offset->core_ddr_config));
+	SDHCI_MSM_DUMP(
+			"Vndr func: 0x%08x | Vndr func2 : 0x%08x Vndr func3: 0x%08x\n",
+		readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec),
+		readl_relaxed(host->ioaddr +
+			msm_offset->core_vendor_spec_func2),
+		readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec3));
+}
+
+static const struct sdhci_msm_variant_ops mci_var_ops = {
+	.msm_readl_relaxed = sdhci_msm_mci_variant_readl_relaxed,
+	.msm_writel_relaxed = sdhci_msm_mci_variant_writel_relaxed,
+};
+
+static const struct sdhci_msm_variant_ops v5_var_ops = {
+	.msm_readl_relaxed = sdhci_msm_v5_variant_readl_relaxed,
+	.msm_writel_relaxed = sdhci_msm_v5_variant_writel_relaxed,
+};
+
+static const struct sdhci_msm_variant_info sdhci_msm_mci_var = {
+	.var_ops = &mci_var_ops,
+	.offset = &sdhci_msm_mci_offset,
+};
+
+static const struct sdhci_msm_variant_info sdhci_msm_v5_var = {
+	.mci_removed = true,
+	.var_ops = &v5_var_ops,
+	.offset = &sdhci_msm_v5_offset,
+};
+
+static const struct sdhci_msm_variant_info sdm845_sdhci_var = {
+	.mci_removed = true,
+	.restore_dll_config = true,
+	.var_ops = &v5_var_ops,
+	.offset = &sdhci_msm_v5_offset,
+};
+
+static const struct of_device_id sdhci_msm_dt_match[] = {
+	/*
+	 * Do not add new variants to the driver which are compatible with
+	 * generic ones, unless they need customization.
+	 */
+	{.compatible = "qcom,sdhci-msm-v4", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,sdhci-msm-v5", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sdm670-sdhci", .data = &sdm845_sdhci_var},
+	{.compatible = "qcom,sdm845-sdhci", .data = &sdm845_sdhci_var},
+	{.compatible = "qcom,sc7180-sdhci", .data = &sdm845_sdhci_var},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match);
+
+static const struct sdhci_ops sdhci_msm_ops = {
+	.reset = sdhci_msm_reset,
+	.set_clock = sdhci_msm_set_clock,
+	.get_min_clock = sdhci_msm_get_min_clock,
+	.get_max_clock = sdhci_msm_get_max_clock,
+	.set_bus_width = sdhci_set_bus_width,
+	.set_uhs_signaling = sdhci_msm_set_uhs_signaling,
+	.write_w = sdhci_msm_writew,
+	.write_b = sdhci_msm_writeb,
+	.irq	= sdhci_msm_cqe_irq,
+	.dump_vendor_regs = sdhci_msm_dump_vendor_regs,
+	.set_power = sdhci_set_power_noreg,
+	.set_timeout = sdhci_msm_set_timeout,
+};
+
+static const struct sdhci_pltfm_data sdhci_msm_pdata = {
+	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
+		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
+		  SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
+
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+	.ops = &sdhci_msm_ops,
+};
+
+static inline void sdhci_msm_get_of_property(struct platform_device *pdev,
+		struct sdhci_host *host)
+{
+	struct device_node *node = pdev->dev.of_node;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	if (of_property_read_u32(node, "qcom,ddr-config",
+				&msm_host->ddr_config))
+		msm_host->ddr_config = DDR_CONFIG_POR_VAL;
+
+	of_property_read_u32(node, "qcom,dll-config", &msm_host->dll_config);
+
+	if (of_device_is_compatible(node, "qcom,msm8916-sdhci"))
+		host->quirks2 |= SDHCI_QUIRK2_BROKEN_64_BIT_DMA;
+}
+
+static int sdhci_msm_gcc_reset(struct device *dev, struct sdhci_host *host)
+{
+	struct reset_control *reset;
+	int ret = 0;
+
+	reset = reset_control_get_optional_exclusive(dev, NULL);
+	if (IS_ERR(reset))
+		return dev_err_probe(dev, PTR_ERR(reset),
+				"unable to acquire core_reset\n");
+
+	if (!reset)
+		return ret;
+
+	ret = reset_control_assert(reset);
+	if (ret) {
+		reset_control_put(reset);
+		return dev_err_probe(dev, ret, "core_reset assert failed\n");
+	}
+
+	/*
+	 * The hardware requirement for delay between assert/deassert
+	 * is at least 3-4 sleep clock (32.7KHz) cycles, which comes to
+	 * ~125us (4/32768). To be on the safe side add 200us delay.
+	 */
+	usleep_range(200, 210);
+
+	ret = reset_control_deassert(reset);
+	if (ret) {
+		reset_control_put(reset);
+		return dev_err_probe(dev, ret, "core_reset deassert failed\n");
+	}
+
+	usleep_range(200, 210);
+	reset_control_put(reset);
+
+	return ret;
+}
+
+static int sdhci_msm_probe(struct platform_device *pdev)
+{
+	struct sdhci_host *host;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct sdhci_msm_host *msm_host;
+	struct clk *clk;
+	int ret;
+	u16 host_version, core_minor;
+	u32 core_version, config;
+	u8 core_major;
+	const struct sdhci_msm_offset *msm_offset;
+	const struct sdhci_msm_variant_info *var_info;
+	struct device_node *node = pdev->dev.of_node;
+
+	host = sdhci_pltfm_init(pdev, &sdhci_msm_pdata, sizeof(*msm_host));
+	if (IS_ERR(host))
+		return PTR_ERR(host);
+
+	host->sdma_boundary = 0;
+	pltfm_host = sdhci_priv(host);
+	msm_host = sdhci_pltfm_priv(pltfm_host);
+	msm_host->mmc = host->mmc;
+	msm_host->pdev = pdev;
+
+	ret = mmc_of_parse(host->mmc);
+	if (ret)
+		goto pltfm_free;
+
+	/*
+	 * Based on the compatible string, load the required msm host info from
+	 * the data associated with the version info.
+	 */
+	var_info = of_device_get_match_data(&pdev->dev);
+
+	msm_host->mci_removed = var_info->mci_removed;
+	msm_host->restore_dll_config = var_info->restore_dll_config;
+	msm_host->var_ops = var_info->var_ops;
+	msm_host->offset = var_info->offset;
+
+	msm_offset = msm_host->offset;
+
+	sdhci_get_of_property(pdev);
+	sdhci_msm_get_of_property(pdev, host);
+
+	msm_host->saved_tuning_phase = INVALID_TUNING_PHASE;
+
+	ret = sdhci_msm_gcc_reset(&pdev->dev, host);
+	if (ret)
+		goto pltfm_free;
+
+	/* Setup SDCC bus voter clock. */
+	msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus");
+	if (!IS_ERR(msm_host->bus_clk)) {
+		/* Vote for max. clk rate for max. performance */
+		ret = clk_set_rate(msm_host->bus_clk, INT_MAX);
+		if (ret)
+			goto pltfm_free;
+		ret = clk_prepare_enable(msm_host->bus_clk);
+		if (ret)
+			goto pltfm_free;
+	}
+
+	/* Setup main peripheral bus clock */
+	clk = devm_clk_get(&pdev->dev, "iface");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		dev_err(&pdev->dev, "Peripheral clk setup failed (%d)\n", ret);
+		goto bus_clk_disable;
+	}
+	msm_host->bulk_clks[1].clk = clk;
+
+	/* Setup SDC MMC clock */
+	clk = devm_clk_get(&pdev->dev, "core");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		dev_err(&pdev->dev, "SDC MMC clk setup failed (%d)\n", ret);
+		goto bus_clk_disable;
+	}
+	msm_host->bulk_clks[0].clk = clk;
+
+	 /* Check for optional interconnect paths */
+	ret = dev_pm_opp_of_find_icc_paths(&pdev->dev, NULL);
+	if (ret)
+		goto bus_clk_disable;
+
+	ret = devm_pm_opp_set_clkname(&pdev->dev, "core");
+	if (ret)
+		goto bus_clk_disable;
+
+	/* OPP table is optional */
+	ret = devm_pm_opp_of_add_table(&pdev->dev);
+	if (ret && ret != -ENODEV) {
+		dev_err(&pdev->dev, "Invalid OPP table in Device tree\n");
+		goto bus_clk_disable;
+	}
+
+	/* Vote for maximum clock rate for maximum performance */
+	ret = dev_pm_opp_set_rate(&pdev->dev, INT_MAX);
+	if (ret)
+		dev_warn(&pdev->dev, "core clock boost failed\n");
+
+	clk = devm_clk_get(&pdev->dev, "cal");
+	if (IS_ERR(clk))
+		clk = NULL;
+	msm_host->bulk_clks[2].clk = clk;
+
+	clk = devm_clk_get(&pdev->dev, "sleep");
+	if (IS_ERR(clk))
+		clk = NULL;
+	msm_host->bulk_clks[3].clk = clk;
+
+	clk = sdhci_msm_ice_get_clk(&pdev->dev);
+	if (IS_ERR(clk))
+		clk = NULL;
+	msm_host->bulk_clks[4].clk = clk;
+
+	ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_host->bulk_clks),
+				      msm_host->bulk_clks);
+	if (ret)
+		goto bus_clk_disable;
+
+	/*
+	 * xo clock is needed for FLL feature of cm_dll.
+	 * In case if xo clock is not mentioned in DT, warn and proceed.
+	 */
+	msm_host->xo_clk = devm_clk_get(&pdev->dev, "xo");
+	if (IS_ERR(msm_host->xo_clk)) {
+		ret = PTR_ERR(msm_host->xo_clk);
+		dev_warn(&pdev->dev, "TCXO clk not present (%d)\n", ret);
+	}
+
+	if (!msm_host->mci_removed) {
+		msm_host->core_mem = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(msm_host->core_mem)) {
+			ret = PTR_ERR(msm_host->core_mem);
+			goto clk_disable;
+		}
+	}
+
+	/* Reset the vendor spec register to power on reset state */
+	writel_relaxed(CORE_VENDOR_SPEC_POR_VAL,
+			host->ioaddr + msm_offset->core_vendor_spec);
+
+	if (!msm_host->mci_removed) {
+		/* Set HC_MODE_EN bit in HC_MODE register */
+		msm_host_writel(msm_host, HC_MODE_EN, host,
+				msm_offset->core_hc_mode);
+		config = msm_host_readl(msm_host, host,
+				msm_offset->core_hc_mode);
+		config |= FF_CLK_SW_RST_DIS;
+		msm_host_writel(msm_host, config, host,
+				msm_offset->core_hc_mode);
+	}
+
+	host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
+	dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n",
+		host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >>
+			       SDHCI_VENDOR_VER_SHIFT));
+
+	core_version = msm_host_readl(msm_host, host,
+			msm_offset->core_mci_version);
+	core_major = (core_version & CORE_VERSION_MAJOR_MASK) >>
+		      CORE_VERSION_MAJOR_SHIFT;
+	core_minor = core_version & CORE_VERSION_MINOR_MASK;
+	dev_dbg(&pdev->dev, "MCI Version: 0x%08x, major: 0x%04x, minor: 0x%02x\n",
+		core_version, core_major, core_minor);
+
+	if (core_major == 1 && core_minor >= 0x42)
+		msm_host->use_14lpp_dll_reset = true;
+
+	/*
+	 * SDCC 5 controller with major version 1, minor version 0x34 and later
+	 * with HS 400 mode support will use CM DLL instead of CDC LP 533 DLL.
+	 */
+	if (core_major == 1 && core_minor < 0x34)
+		msm_host->use_cdclp533 = true;
+
+	/*
+	 * Support for some capabilities is not advertised by newer
+	 * controller versions and must be explicitly enabled.
+	 */
+	if (core_major >= 1 && core_minor != 0x11 && core_minor != 0x12) {
+		config = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES);
+		config |= SDHCI_CAN_VDD_300 | SDHCI_CAN_DO_8BIT;
+		writel_relaxed(config, host->ioaddr +
+				msm_offset->core_vendor_spec_capabilities0);
+	}
+
+	if (core_major == 1 && core_minor >= 0x49)
+		msm_host->updated_ddr_cfg = true;
+
+	if (core_major == 1 && core_minor >= 0x71)
+		msm_host->uses_tassadar_dll = true;
+
+	ret = sdhci_msm_register_vreg(msm_host);
+	if (ret)
+		goto clk_disable;
+
+	/*
+	 * Power on reset state may trigger power irq if previous status of
+	 * PWRCTL was either BUS_ON or IO_HIGH_V. So before enabling pwr irq
+	 * interrupt in GIC, any pending power irq interrupt should be
+	 * acknowledged. Otherwise power irq interrupt handler would be
+	 * fired prematurely.
+	 */
+	sdhci_msm_handle_pwr_irq(host, 0);
+
+	/*
+	 * Ensure that above writes are propogated before interrupt enablement
+	 * in GIC.
+	 */
+	mb();
+
+	/* Setup IRQ for handling power/voltage tasks with PMIC */
+	msm_host->pwr_irq = platform_get_irq_byname(pdev, "pwr_irq");
+	if (msm_host->pwr_irq < 0) {
+		ret = msm_host->pwr_irq;
+		goto clk_disable;
+	}
+
+	sdhci_msm_init_pwr_irq_wait(msm_host);
+	/* Enable pwr irq interrupts */
+	msm_host_writel(msm_host, INT_MASK, host,
+		msm_offset->core_pwrctl_mask);
+
+	ret = devm_request_threaded_irq(&pdev->dev, msm_host->pwr_irq, NULL,
+					sdhci_msm_pwr_irq, IRQF_ONESHOT,
+					dev_name(&pdev->dev), host);
+	if (ret) {
+		dev_err(&pdev->dev, "Request IRQ failed (%d)\n", ret);
+		goto clk_disable;
+	}
+
+	msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
+
+	/* Set the timeout value to max possible */
+	host->max_timeout_count = 0xF;
+
+	pm_runtime_get_noresume(&pdev->dev);
+	pm_runtime_set_active(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev,
+					 MSM_MMC_AUTOSUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(&pdev->dev);
+
+	host->mmc_host_ops.start_signal_voltage_switch =
+		sdhci_msm_start_signal_voltage_switch;
+	host->mmc_host_ops.execute_tuning = sdhci_msm_execute_tuning;
+	if (of_property_read_bool(node, "supports-cqe"))
+		ret = sdhci_msm_cqe_add_host(host, pdev);
+	else
+		ret = sdhci_add_host(host);
+	if (ret)
+		goto pm_runtime_disable;
+
+	pm_runtime_mark_last_busy(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
+
+	return 0;
+
+pm_runtime_disable:
+	pm_runtime_disable(&pdev->dev);
+	pm_runtime_set_suspended(&pdev->dev);
+	pm_runtime_put_noidle(&pdev->dev);
+clk_disable:
+	clk_bulk_disable_unprepare(ARRAY_SIZE(msm_host->bulk_clks),
+				   msm_host->bulk_clks);
+bus_clk_disable:
+	if (!IS_ERR(msm_host->bus_clk))
+		clk_disable_unprepare(msm_host->bus_clk);
+pltfm_free:
+	sdhci_pltfm_free(pdev);
+	return ret;
+}
+
+static int sdhci_msm_remove(struct platform_device *pdev)
+{
+	struct sdhci_host *host = platform_get_drvdata(pdev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	int dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) ==
+		    0xffffffff);
+
+	sdhci_remove_host(host, dead);
+
+	pm_runtime_get_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+	pm_runtime_put_noidle(&pdev->dev);
+
+	clk_bulk_disable_unprepare(ARRAY_SIZE(msm_host->bulk_clks),
+				   msm_host->bulk_clks);
+	if (!IS_ERR(msm_host->bus_clk))
+		clk_disable_unprepare(msm_host->bus_clk);
+	sdhci_pltfm_free(pdev);
+	return 0;
+}
+
+static __maybe_unused int sdhci_msm_runtime_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+
+	/* Drop the performance vote */
+	dev_pm_opp_set_rate(dev, 0);
+	clk_bulk_disable_unprepare(ARRAY_SIZE(msm_host->bulk_clks),
+				   msm_host->bulk_clks);
+
+	return 0;
+}
+
+static __maybe_unused int sdhci_msm_runtime_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+	int ret;
+
+	ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_host->bulk_clks),
+				       msm_host->bulk_clks);
+	if (ret)
+		return ret;
+	/*
+	 * Whenever core-clock is gated dynamically, it's needed to
+	 * restore the SDR DLL settings when the clock is ungated.
+	 */
+	if (msm_host->restore_dll_config && msm_host->clk_rate) {
+		ret = sdhci_msm_restore_sdr_dll_config(host);
+		if (ret)
+			return ret;
+	}
+
+	dev_pm_opp_set_rate(dev, msm_host->clk_rate);
+
+	return sdhci_msm_ice_resume(msm_host);
+}
+
+static const struct dev_pm_ops sdhci_msm_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(sdhci_msm_runtime_suspend,
+			   sdhci_msm_runtime_resume,
+			   NULL)
+};
+
+static struct platform_driver sdhci_msm_driver = {
+	.probe = sdhci_msm_probe,
+	.remove = sdhci_msm_remove,
+	.driver = {
+		   .name = "sdhci_msm",
+		   .of_match_table = sdhci_msm_dt_match,
+		   .pm = &sdhci_msm_pm_ops,
+		   .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+};
+
+module_platform_driver(sdhci_msm_driver);
+
+MODULE_DESCRIPTION("Qualcomm Secure Digital Host Controller Interface driver");
+MODULE_LICENSE("GPL v2");