ftrace: Synchronize the initialization of ftrace_opsgrafted

There's some internal state that ftrace_ops needs to have set, but since
it can be declared outside of the ftrace.c code, it calls
ftrace_ops_init() on the ops in every global function. The issue is that
if two tasks call it on the same ops at the same time it is possible to
have the initialization of one corrupt the initialization of the other
call.

Create a ops_mutex to use to synchronize every initialization of the
ftrace_ops. The mutex is taken within checking the ftrace_ops flag that
states it was initializied but the flag is checked again after the mutex
has been taken. Checking first outside the mutex allows it to shortcut
having to take the mutex. But then the check needs to be done again after
the mute is taken in case of races.

Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260902095501.6b59af20@gandalf.local.home
Fixes: f04f24fb7e48d ("ftrace, kprobes: Fix a deadlock on ftrace_regex_lock")
Reported-by: sashiko-bot@kernel.org
Close: https://lore.kernel.org/all/20260829025528.49A831F000E9@smtp.kernel.org/
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 972 insertions, 0 deletions

diff --git a/drivers/misc/cardreader/rts5264.c b/drivers/misc/cardreader/rts5264.c
new file mode 100644
index 000000000..99a2d5ea6
--- /dev/null
+++ b/drivers/misc/cardreader/rts5264.c
@@ -0,0 +1,972 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ *   Ricky Wu <ricky_wu@realtek.com>
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/rtsx_pci.h>
+
+#include "rts5264.h"
+#include "rtsx_pcr.h"
+
+static u8 rts5264_get_ic_version(struct rtsx_pcr *pcr)
+{
+	u8 val;
+
+	rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
+	return val & 0x0F;
+}
+
+static void rts5264_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
+{
+	u8 driving_3v3[4][3] = {
+		{0x88, 0x88, 0x88},
+		{0x77, 0x77, 0x77},
+		{0x99, 0x99, 0x99},
+		{0x66, 0x66, 0x66},
+	};
+	u8 driving_1v8[4][3] = {
+		{0x99, 0x99, 0x99},
+		{0x77, 0x77, 0x77},
+		{0xBB, 0xBB, 0xBB},
+		{0x65, 0x65, 0x65},
+	};
+	u8 (*driving)[3], drive_sel;
+
+	if (voltage == OUTPUT_3V3) {
+		driving = driving_3v3;
+		drive_sel = pcr->sd30_drive_sel_3v3;
+	} else {
+		driving = driving_1v8;
+		drive_sel = pcr->sd30_drive_sel_1v8;
+	}
+
+	rtsx_pci_write_register(pcr, SD30_CLK_DRIVE_SEL,
+			0xFF, driving[drive_sel][0]);
+	rtsx_pci_write_register(pcr, SD30_CMD_DRIVE_SEL,
+			0xFF, driving[drive_sel][1]);
+	rtsx_pci_write_register(pcr, SD30_DAT_DRIVE_SEL,
+			0xFF, driving[drive_sel][2]);
+}
+
+static void rts5264_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool runtime)
+{
+	/* Set relink_time to 0 */
+	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, MASK_8_BIT_DEF, 0);
+	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, MASK_8_BIT_DEF, 0);
+	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3,
+				RELINK_TIME_MASK, 0);
+
+	if (pm_state == HOST_ENTER_S3)
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
+					D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);
+
+	if (!runtime) {
+		rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG1,
+				CD_RESUME_EN_MASK, 0);
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+		rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+				FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+	} else {
+		rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+				FORCE_PM_CONTROL | FORCE_PM_VALUE, 0);
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x01);
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
+					D3_DELINK_MODE_EN, 0);
+		rtsx_pci_write_register(pcr, RTS5264_FW_CTL,
+				RTS5264_INFORM_RTD3_COLD, RTS5264_INFORM_RTD3_COLD);
+		rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG4,
+				RTS5264_FORCE_PRSNT_LOW, RTS5264_FORCE_PRSNT_LOW);
+	}
+
+	rtsx_pci_write_register(pcr, RTS5264_REG_FPDCTL,
+		SSC_POWER_DOWN, SSC_POWER_DOWN);
+}
+
+static int rts5264_enable_auto_blink(struct rtsx_pcr *pcr)
+{
+	return rtsx_pci_write_register(pcr, OLT_LED_CTL,
+		LED_SHINE_MASK, LED_SHINE_EN);
+}
+
+static int rts5264_disable_auto_blink(struct rtsx_pcr *pcr)
+{
+	return rtsx_pci_write_register(pcr, OLT_LED_CTL,
+		LED_SHINE_MASK, LED_SHINE_DISABLE);
+}
+
+static int rts5264_turn_on_led(struct rtsx_pcr *pcr)
+{
+	return rtsx_pci_write_register(pcr, GPIO_CTL,
+		0x02, 0x02);
+}
+
+static int rts5264_turn_off_led(struct rtsx_pcr *pcr)
+{
+	return rtsx_pci_write_register(pcr, GPIO_CTL,
+		0x02, 0x00);
+}
+
+/* SD Pull Control Enable:
+ *     SD_DAT[3:0] ==> pull up
+ *     SD_CD       ==> pull up
+ *     SD_WP       ==> pull up
+ *     SD_CMD      ==> pull up
+ *     SD_CLK      ==> pull down
+ */
+static const u32 rts5264_sd_pull_ctl_enable_tbl[] = {
+	RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
+	RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
+	0,
+};
+
+/* SD Pull Control Disable:
+ *     SD_DAT[3:0] ==> pull down
+ *     SD_CD       ==> pull up
+ *     SD_WP       ==> pull down
+ *     SD_CMD      ==> pull down
+ *     SD_CLK      ==> pull down
+ */
+static const u32 rts5264_sd_pull_ctl_disable_tbl[] = {
+	RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
+	RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
+	0,
+};
+
+static int rts5264_sd_set_sample_push_timing_sd30(struct rtsx_pcr *pcr)
+{
+	rtsx_pci_write_register(pcr, SD_CFG1, SD_MODE_SELECT_MASK
+		| SD_ASYNC_FIFO_NOT_RST, SD_30_MODE | SD_ASYNC_FIFO_NOT_RST);
+	rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ);
+	rtsx_pci_write_register(pcr, CARD_CLK_SOURCE, 0xFF,
+			CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
+	rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0);
+
+	return 0;
+}
+
+static int rts5264_card_power_on(struct rtsx_pcr *pcr, int card)
+{
+	struct rtsx_cr_option *option = &pcr->option;
+
+	if (option->ocp_en)
+		rtsx_pci_enable_ocp(pcr);
+
+	rtsx_pci_write_register(pcr, REG_CRC_DUMMY_0,
+		CFG_SD_POW_AUTO_PD, CFG_SD_POW_AUTO_PD);
+
+	rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG1,
+			RTS5264_LDO1_TUNE_MASK, RTS5264_LDO1_33);
+	rtsx_pci_write_register(pcr, RTS5264_LDO1233318_POW_CTL,
+			RTS5264_LDO1_POWERON, RTS5264_LDO1_POWERON);
+	rtsx_pci_write_register(pcr, RTS5264_LDO1233318_POW_CTL,
+			RTS5264_LDO3318_POWERON, RTS5264_LDO3318_POWERON);
+
+	msleep(20);
+
+	rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN);
+
+	/* Initialize SD_CFG1 register */
+	rtsx_pci_write_register(pcr, SD_CFG1, 0xFF,
+			SD_CLK_DIVIDE_128 | SD_20_MODE | SD_BUS_WIDTH_1BIT);
+	rtsx_pci_write_register(pcr, SD_SAMPLE_POINT_CTL,
+			0xFF, SD20_RX_POS_EDGE);
+	rtsx_pci_write_register(pcr, SD_PUSH_POINT_CTL, 0xFF, 0);
+	rtsx_pci_write_register(pcr, CARD_STOP, SD_STOP | SD_CLR_ERR,
+			SD_STOP | SD_CLR_ERR);
+
+	/* Reset SD_CFG3 register */
+	rtsx_pci_write_register(pcr, SD_CFG3, SD30_CLK_END_EN, 0);
+	rtsx_pci_write_register(pcr, REG_SD_STOP_SDCLK_CFG,
+			SD30_CLK_STOP_CFG_EN | SD30_CLK_STOP_CFG1 |
+			SD30_CLK_STOP_CFG0, 0);
+
+	if (pcr->extra_caps & EXTRA_CAPS_SD_SDR50 ||
+	    pcr->extra_caps & EXTRA_CAPS_SD_SDR104)
+		rts5264_sd_set_sample_push_timing_sd30(pcr);
+
+	return 0;
+}
+
+static int rts5264_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
+{
+	rtsx_pci_write_register(pcr, RTS5264_CARD_PWR_CTL,
+			RTS5264_PUPDC, RTS5264_PUPDC);
+
+	switch (voltage) {
+	case OUTPUT_3V3:
+		rtsx_pci_write_register(pcr, RTS5264_LDO1233318_POW_CTL,
+				RTS5264_TUNE_REF_LDO3318, RTS5264_TUNE_REF_LDO3318);
+		rtsx_pci_write_register(pcr, RTS5264_DV3318_CFG,
+				RTS5264_DV3318_TUNE_MASK, RTS5264_DV3318_33);
+		rtsx_pci_write_register(pcr, SD_PAD_CTL,
+				SD_IO_USING_1V8, 0);
+		break;
+	case OUTPUT_1V8:
+		rtsx_pci_write_register(pcr, RTS5264_LDO1233318_POW_CTL,
+				RTS5264_TUNE_REF_LDO3318, RTS5264_TUNE_REF_LDO3318_DFT);
+		rtsx_pci_write_register(pcr, RTS5264_DV3318_CFG,
+				RTS5264_DV3318_TUNE_MASK, RTS5264_DV3318_18);
+		rtsx_pci_write_register(pcr, SD_PAD_CTL,
+				SD_IO_USING_1V8, SD_IO_USING_1V8);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* set pad drive */
+	rts5264_fill_driving(pcr, voltage);
+
+	return 0;
+}
+
+static void rts5264_stop_cmd(struct rtsx_pcr *pcr)
+{
+	rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD);
+	rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA);
+	rtsx_pci_write_register(pcr, DMACTL, DMA_RST, DMA_RST);
+	rtsx_pci_write_register(pcr, RBCTL, RB_FLUSH, RB_FLUSH);
+}
+
+static void rts5264_card_before_power_off(struct rtsx_pcr *pcr)
+{
+	rts5264_stop_cmd(pcr);
+	rts5264_switch_output_voltage(pcr, OUTPUT_3V3);
+}
+
+static int rts5264_card_power_off(struct rtsx_pcr *pcr, int card)
+{
+	int err = 0;
+
+	rts5264_card_before_power_off(pcr);
+	err = rtsx_pci_write_register(pcr, RTS5264_LDO1233318_POW_CTL,
+				RTS5264_LDO_POWERON_MASK, 0);
+
+	rtsx_pci_write_register(pcr, REG_CRC_DUMMY_0,
+		CFG_SD_POW_AUTO_PD, 0);
+	if (pcr->option.ocp_en)
+		rtsx_pci_disable_ocp(pcr);
+
+	return err;
+}
+
+static void rts5264_enable_ocp(struct rtsx_pcr *pcr)
+{
+	u8 mask = 0;
+	u8 val = 0;
+
+	rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG0,
+			RTS5264_LDO1_OCP_EN | RTS5264_LDO1_OCP_LMT_EN,
+			RTS5264_LDO1_OCP_EN | RTS5264_LDO1_OCP_LMT_EN);
+	rtsx_pci_write_register(pcr, RTS5264_LDO2_CFG0,
+			RTS5264_LDO2_OCP_EN | RTS5264_LDO2_OCP_LMT_EN,
+			RTS5264_LDO2_OCP_EN | RTS5264_LDO2_OCP_LMT_EN);
+	rtsx_pci_write_register(pcr, RTS5264_LDO3_CFG0,
+			RTS5264_LDO3_OCP_EN | RTS5264_LDO3_OCP_LMT_EN,
+			RTS5264_LDO3_OCP_EN | RTS5264_LDO3_OCP_LMT_EN);
+	rtsx_pci_write_register(pcr, RTS5264_OVP_DET,
+			RTS5264_POW_VDET, RTS5264_POW_VDET);
+
+	mask = SD_OCP_INT_EN | SD_DETECT_EN;
+	mask |= SDVIO_OCP_INT_EN | SDVIO_DETECT_EN;
+	val = mask;
+	rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val);
+
+	mask = SD_VDD3_OCP_INT_EN | SD_VDD3_DETECT_EN;
+	val = mask;
+	rtsx_pci_write_register(pcr, RTS5264_OCP_VDD3_CTL, mask, val);
+
+	mask = RTS5264_OVP_INT_EN | RTS5264_OVP_DETECT_EN;
+	val = mask;
+	rtsx_pci_write_register(pcr, RTS5264_OVP_CTL, mask, val);
+}
+
+static void rts5264_disable_ocp(struct rtsx_pcr *pcr)
+{
+	u8 mask = 0;
+
+	mask = SD_OCP_INT_EN | SD_DETECT_EN;
+	mask |= SDVIO_OCP_INT_EN | SDVIO_DETECT_EN;
+	rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
+
+	mask = SD_VDD3_OCP_INT_EN | SD_VDD3_DETECT_EN;
+	rtsx_pci_write_register(pcr, RTS5264_OCP_VDD3_CTL, mask, 0);
+
+	mask = RTS5264_OVP_INT_EN | RTS5264_OVP_DETECT_EN;
+	rtsx_pci_write_register(pcr, RTS5264_OVP_CTL, mask, 0);
+
+	rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG0,
+			RTS5264_LDO1_OCP_EN | RTS5264_LDO1_OCP_LMT_EN, 0);
+	rtsx_pci_write_register(pcr, RTS5264_LDO2_CFG0,
+			RTS5264_LDO2_OCP_EN | RTS5264_LDO2_OCP_LMT_EN, 0);
+	rtsx_pci_write_register(pcr, RTS5264_LDO3_CFG0,
+			RTS5264_LDO3_OCP_EN | RTS5264_LDO3_OCP_LMT_EN, 0);
+	rtsx_pci_write_register(pcr, RTS5264_OVP_DET, RTS5264_POW_VDET, 0);
+}
+
+static void rts5264_init_ocp(struct rtsx_pcr *pcr)
+{
+	struct rtsx_cr_option *option = &pcr->option;
+
+	if (option->ocp_en) {
+		u8 mask, val;
+
+		rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG0,
+			RTS5264_LDO1_OCP_THD_MASK, option->sd_800mA_ocp_thd);
+		rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG0,
+			RTS5264_LDO1_OCP_LMT_THD_MASK,
+			RTS5264_LDO1_LMT_THD_2000);
+
+		rtsx_pci_write_register(pcr, RTS5264_LDO2_CFG0,
+			RTS5264_LDO2_OCP_THD_MASK, RTS5264_LDO2_OCP_THD_950);
+		rtsx_pci_write_register(pcr, RTS5264_LDO2_CFG0,
+			RTS5264_LDO2_OCP_LMT_THD_MASK,
+			RTS5264_LDO2_LMT_THD_2000);
+
+		rtsx_pci_write_register(pcr, RTS5264_LDO3_CFG0,
+			RTS5264_LDO3_OCP_THD_MASK, RTS5264_LDO3_OCP_THD_710);
+		rtsx_pci_write_register(pcr, RTS5264_LDO3_CFG0,
+			RTS5264_LDO3_OCP_LMT_THD_MASK,
+			RTS5264_LDO3_LMT_THD_1500);
+
+		rtsx_pci_write_register(pcr, RTS5264_OVP_DET,
+			RTS5264_TUNE_VROV_MASK, RTS5264_TUNE_VROV_1V6);
+
+		mask = SD_OCP_GLITCH_MASK | SDVIO_OCP_GLITCH_MASK;
+		val = pcr->hw_param.ocp_glitch;
+		rtsx_pci_write_register(pcr, REG_OCPGLITCH, mask, val);
+
+	} else {
+		rtsx_pci_write_register(pcr, RTS5264_LDO1_CFG0,
+			RTS5264_LDO1_OCP_EN | RTS5264_LDO1_OCP_LMT_EN, 0);
+		rtsx_pci_write_register(pcr, RTS5264_LDO2_CFG0,
+			RTS5264_LDO2_OCP_EN | RTS5264_LDO2_OCP_LMT_EN, 0);
+		rtsx_pci_write_register(pcr, RTS5264_LDO3_CFG0,
+			RTS5264_LDO3_OCP_EN | RTS5264_LDO3_OCP_LMT_EN, 0);
+		rtsx_pci_write_register(pcr, RTS5264_OVP_DET,
+			RTS5264_POW_VDET, 0);
+	}
+}
+
+static int rts5264_get_ocpstat2(struct rtsx_pcr *pcr, u8 *val)
+{
+	return rtsx_pci_read_register(pcr, RTS5264_OCP_VDD3_STS, val);
+}
+
+static int rts5264_get_ovpstat(struct rtsx_pcr *pcr, u8 *val)
+{
+	return rtsx_pci_read_register(pcr, RTS5264_OVP_STS, val);
+}
+
+static void rts5264_clear_ocpstat(struct rtsx_pcr *pcr)
+{
+	u8 mask = 0;
+	u8 val = 0;
+
+	mask = SD_OCP_INT_CLR | SD_OC_CLR;
+	mask |= SDVIO_OCP_INT_CLR | SDVIO_OC_CLR;
+	val = mask;
+	rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val);
+	rtsx_pci_write_register(pcr, RTS5264_OCP_VDD3_CTL,
+		SD_VDD3_OCP_INT_CLR | SD_VDD3_OC_CLR,
+		SD_VDD3_OCP_INT_CLR | SD_VDD3_OC_CLR);
+	rtsx_pci_write_register(pcr, RTS5264_OVP_CTL,
+		RTS5264_OVP_INT_CLR | RTS5264_OVP_CLR,
+		RTS5264_OVP_INT_CLR | RTS5264_OVP_CLR);
+
+	udelay(1000);
+
+	rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
+	rtsx_pci_write_register(pcr, RTS5264_OCP_VDD3_CTL,
+		SD_VDD3_OCP_INT_CLR | SD_VDD3_OC_CLR, 0);
+	rtsx_pci_write_register(pcr, RTS5264_OVP_CTL,
+		RTS5264_OVP_INT_CLR | RTS5264_OVP_CLR, 0);
+}
+
+static void rts5264_process_ocp(struct rtsx_pcr *pcr)
+{
+	if (!pcr->option.ocp_en)
+		return;
+
+	rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat);
+	rts5264_get_ocpstat2(pcr, &pcr->ocp_stat2);
+	rts5264_get_ovpstat(pcr, &pcr->ovp_stat);
+
+	if ((pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER | SDVIO_OC_NOW | SDVIO_OC_EVER)) ||
+			(pcr->ocp_stat2 & (SD_VDD3_OC_NOW | SD_VDD3_OC_EVER)) ||
+			(pcr->ovp_stat & (RTS5264_OVP_NOW | RTS5264_OVP_EVER))) {
+		rts5264_clear_ocpstat(pcr);
+		rts5264_card_power_off(pcr, RTSX_SD_CARD);
+		rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0);
+		pcr->ocp_stat = 0;
+		pcr->ocp_stat2 = 0;
+		pcr->ovp_stat = 0;
+	}
+}
+
+static void rts5264_init_from_hw(struct rtsx_pcr *pcr)
+{
+	struct pci_dev *pdev = pcr->pci;
+	u32 lval1, lval2, i;
+	u16 setting_reg1, setting_reg2, phy_val;
+	u8 valid, efuse_valid, tmp, efuse_len;
+
+	rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+		REG_EFUSE_POR | REG_EFUSE_POWER_MASK,
+		REG_EFUSE_POR | REG_EFUSE_POWERON);
+	udelay(1);
+	rtsx_pci_write_register(pcr, RTS5264_EFUSE_ADDR,
+		RTS5264_EFUSE_ADDR_MASK, 0x00);
+	rtsx_pci_write_register(pcr, RTS5264_EFUSE_CTL,
+		RTS5264_EFUSE_ENABLE | RTS5264_EFUSE_MODE_MASK,
+		RTS5264_EFUSE_ENABLE);
+
+	/* Wait transfer end */
+	for (i = 0; i < MAX_RW_REG_CNT; i++) {
+		rtsx_pci_read_register(pcr, RTS5264_EFUSE_CTL, &tmp);
+		if ((tmp & 0x80) == 0)
+			break;
+	}
+	rtsx_pci_read_register(pcr, RTS5264_EFUSE_READ_DATA, &tmp);
+	efuse_len = ((tmp & 0x70) >> 4);
+	pcr_dbg(pcr, "Load efuse len: 0x%x\n", efuse_len);
+	efuse_valid = ((tmp & 0x0C) >> 2);
+	pcr_dbg(pcr, "Load efuse valid: 0x%x\n", efuse_valid);
+
+	pci_read_config_dword(pdev, PCR_SETTING_REG2, &lval2);
+	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, lval2);
+	/* 0x816 */
+	valid = (u8)((lval2 >> 16) & 0x03);
+
+	rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+		REG_EFUSE_POR, 0);
+	pcr_dbg(pcr, "Disable efuse por!\n");
+
+	if (is_version(pcr, PID_5264, RTS5264_IC_VER_B)) {
+		pci_write_config_dword(pdev, 0x718, 0x0007C000);
+		rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE, 0xFF, 0x88);
+		rtsx_pci_read_phy_register(pcr, _PHY_REV0, &phy_val);
+		phy_val &= 0xFFFD;
+
+		if (efuse_len == 0) {
+			rtsx_pci_write_register(pcr, RTS5264_FW_CFG_INFO2, 0x0F, 0x0F);
+			rtsx_pci_write_register(pcr, 0xFF14, 0xFF, 0x79);
+			rtsx_pci_write_register(pcr, 0xFF15, 0xFF, 0xFF);
+			rtsx_pci_write_register(pcr, 0xFF16, 0xFF, 0x3D);
+			rtsx_pci_write_register(pcr, 0xFF17, 0xFF, 0xFE);
+
+			rtsx_pci_write_register(pcr, 0xFF18, 0xFF, 0x5B);
+			rtsx_pci_write_register(pcr, 0xFF19, 0xFF, 0xFF);
+			rtsx_pci_write_register(pcr, 0xFF1A, 0xFF, 0x3E);
+			rtsx_pci_write_register(pcr, 0xFF1B, 0xFF, 0xFE);
+
+			rtsx_pci_write_register(pcr, 0xFF1C, 0xFF, 0x00);
+			rtsx_pci_write_register(pcr, 0xFF1D, 0xFF, 0xFF);
+			rtsx_pci_write_register(pcr, 0xFF1E, 0xFF, 0x3F);
+			rtsx_pci_write_register(pcr, 0xFF1F, 0xFF, 0xFE);
+
+			rtsx_pci_write_register(pcr, 0xFF20, 0xFF, 0x81);
+			rtsx_pci_write_register(pcr, 0xFF21, 0xFF, 0xFF);
+			rtsx_pci_write_register(pcr, 0xFF22, 0xFF, 0x3C);
+			rtsx_pci_write_register(pcr, 0xFF23, 0xFF, 0xFE);
+		}
+
+		rtsx_pci_write_register(pcr, 0xFF24, 0xFF, 0x79);
+		rtsx_pci_write_register(pcr, 0xFF25, 0xFF, 0x5B);
+		rtsx_pci_write_register(pcr, 0xFF26, 0xFF, 0x00);
+		rtsx_pci_write_register(pcr, 0xFF27, 0xFF, 0x40);
+
+		rtsx_pci_write_register(pcr, 0xFF28, 0xFF, (u8)phy_val);
+		rtsx_pci_write_register(pcr, 0xFF29, 0xFF, (u8)(phy_val >> 8));
+		rtsx_pci_write_register(pcr, 0xFF2A, 0xFF, 0x19);
+		rtsx_pci_write_register(pcr, 0xFF2B, 0xFF, 0x40);
+
+		rtsx_pci_write_register(pcr, 0xFF2C, 0xFF, 0x20);
+		rtsx_pci_write_register(pcr, 0xFF2D, 0xFF, 0xDA);
+		rtsx_pci_write_register(pcr, 0xFF2E, 0xFF, 0x0A);
+		rtsx_pci_write_register(pcr, 0xFF2F, 0xFF, 0x40);
+
+		rtsx_pci_write_register(pcr, 0xFF30, 0xFF, 0x20);
+		rtsx_pci_write_register(pcr, 0xFF31, 0xFF, 0xD2);
+		rtsx_pci_write_register(pcr, 0xFF32, 0xFF, 0x0A);
+		rtsx_pci_write_register(pcr, 0xFF33, 0xFF, 0x40);
+	} else {
+		rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE, 0x80, 0x80);
+	}
+
+	if (efuse_valid == 2 || efuse_valid == 3) {
+		if (valid == 3) {
+			/* Bypass efuse */
+			setting_reg1 = PCR_SETTING_REG1;
+			setting_reg2 = PCR_SETTING_REG2;
+		} else {
+			/* Use efuse data */
+			setting_reg1 = PCR_SETTING_REG4;
+			setting_reg2 = PCR_SETTING_REG5;
+		}
+	} else if (efuse_valid == 0) {
+		// default
+		setting_reg1 = PCR_SETTING_REG1;
+		setting_reg2 = PCR_SETTING_REG2;
+	} else {
+		return;
+	}
+
+	pci_read_config_dword(pdev, setting_reg2, &lval2);
+	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", setting_reg2, lval2);
+
+	if (!rts5264_vendor_setting_valid(lval2)) {
+		pcr_dbg(pcr, "skip fetch vendor setting\n");
+		return;
+	}
+
+	pcr->rtd3_en = rts5264_reg_to_rtd3(lval2);
+
+	if (rts5264_reg_check_reverse_socket(lval2)) {
+		if (is_version_higher_than(pcr, PID_5264, RTS5264_IC_VER_B))
+			pcr->option.sd_cd_reverse_en = 1;
+		else
+			pcr->flags |= PCR_REVERSE_SOCKET;
+	}
+
+	if (rts5264_reg_check_wp_reverse(lval2) &&
+		is_version_higher_than(pcr, PID_5264, RTS5264_IC_VER_B))
+		pcr->option.sd_wp_reverse_en = 1;
+
+	pci_read_config_dword(pdev, setting_reg1, &lval1);
+	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", setting_reg1, lval1);
+
+	pcr->aspm_en = rts5264_reg_to_aspm(lval1);
+	pcr->sd30_drive_sel_1v8 = rts5264_reg_to_sd30_drive_sel_1v8(lval1);
+	pcr->sd30_drive_sel_3v3 = rts5264_reg_to_sd30_drive_sel_3v3(lval1);
+
+	if (setting_reg1 == PCR_SETTING_REG1) {
+		/* store setting */
+		rtsx_pci_write_register(pcr, 0xFF0C, 0xFF, (u8)(lval1 & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF0D, 0xFF, (u8)((lval1 >> 8) & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF0E, 0xFF, (u8)((lval1 >> 16) & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF0F, 0xFF, (u8)((lval1 >> 24) & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF10, 0xFF, (u8)(lval2 & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF11, 0xFF, (u8)((lval2 >> 8) & 0xFF));
+		rtsx_pci_write_register(pcr, 0xFF12, 0xFF, (u8)((lval2 >> 16) & 0xFF));
+
+		pci_write_config_dword(pdev, PCR_SETTING_REG4, lval1);
+		lval2 = lval2 & 0x00FFFFFF;
+		pci_write_config_dword(pdev, PCR_SETTING_REG5, lval2);
+	}
+}
+
+static void rts5264_init_from_cfg(struct rtsx_pcr *pcr)
+{
+	struct rtsx_cr_option *option = &pcr->option;
+
+	if (rtsx_check_dev_flag(pcr, ASPM_L1_1_EN | ASPM_L1_2_EN
+				| PM_L1_1_EN | PM_L1_2_EN))
+		rtsx_pci_disable_oobs_polling(pcr);
+	else
+		rtsx_pci_enable_oobs_polling(pcr);
+
+	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0xFF, 0);
+
+	if (option->ltr_en) {
+		if (option->ltr_enabled)
+			rtsx_set_ltr_latency(pcr, option->ltr_active_latency);
+	}
+}
+
+static int rts5264_extra_init_hw(struct rtsx_pcr *pcr)
+{
+	struct rtsx_cr_option *option = &pcr->option;
+
+	rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG1,
+			CD_RESUME_EN_MASK, CD_RESUME_EN_MASK);
+	rtsx_pci_write_register(pcr, REG_VREF, PWD_SUSPND_EN, PWD_SUSPND_EN);
+
+	rts5264_init_from_cfg(pcr);
+	rts5264_init_from_hw(pcr);
+
+	/* power off efuse */
+	rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+			REG_EFUSE_POWER_MASK, REG_EFUSE_POWEROFF);
+	rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG2,
+			RTS5264_CHIP_RST_N_SEL, 0);
+	rtsx_pci_write_register(pcr, RTS5264_REG_LDO12_CFG,
+			RTS5264_LDO12_SR_MASK, RTS5264_LDO12_SR_0_0_MS);
+	rtsx_pci_write_register(pcr, CDGW, 0xFF, 0x01);
+	rtsx_pci_write_register(pcr, RTS5264_CKMUX_MBIAS_PWR,
+			RTS5264_POW_CKMUX, RTS5264_POW_CKMUX);
+	rtsx_pci_write_register(pcr, RTS5264_CMD_OE_START_EARLY,
+			RTS5264_CMD_OE_EARLY_EN | RTS5264_CMD_OE_EARLY_CYCLE_MASK,
+			RTS5264_CMD_OE_EARLY_EN);
+	rtsx_pci_write_register(pcr, RTS5264_DAT_OE_START_EARLY,
+			RTS5264_DAT_OE_EARLY_EN | RTS5264_DAT_OE_EARLY_CYCLE_MASK,
+			RTS5264_DAT_OE_EARLY_EN);
+	rtsx_pci_write_register(pcr, SSC_DIV_N_0, 0xFF, 0x5D);
+
+	rtsx_pci_write_register(pcr, RTS5264_PWR_CUT,
+			RTS5264_CFG_MEM_PD, RTS5264_CFG_MEM_PD);
+	rtsx_pci_write_register(pcr, L1SUB_CONFIG1,
+			AUX_CLK_ACTIVE_SEL_MASK, MAC_CKSW_DONE);
+	rtsx_pci_write_register(pcr, L1SUB_CONFIG3, 0xFF, 0);
+	rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG4,
+			RTS5264_AUX_CLK_16M_EN, 0);
+
+	/* Release PRSNT# */
+	rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG4,
+			RTS5264_FORCE_PRSNT_LOW, 0);
+	rtsx_pci_write_register(pcr, PCLK_CTL,
+			PCLK_MODE_SEL, PCLK_MODE_SEL);
+
+	/* LED shine disabled, set initial shine cycle period */
+	rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x0F, 0x02);
+
+	/* Configure driving */
+	rts5264_fill_driving(pcr, OUTPUT_3V3);
+
+	if (pcr->flags & PCR_REVERSE_SOCKET)
+		rtsx_pci_write_register(pcr, PETXCFG, 0x30, 0x30);
+	else {
+		rtsx_pci_write_register(pcr, PETXCFG, 0x20, option->sd_cd_reverse_en << 5);
+		rtsx_pci_write_register(pcr, PETXCFG, 0x10, option->sd_wp_reverse_en << 4);
+	}
+
+	/*
+	 * If u_force_clkreq_0 is enabled, CLKREQ# PIN will be forced
+	 * to drive low, and we forcibly request clock.
+	 */
+	if (option->force_clkreq_0)
+		rtsx_pci_write_register(pcr, PETXCFG,
+				 FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_LOW);
+	else
+		rtsx_pci_write_register(pcr, PETXCFG,
+				 FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH);
+
+	rtsx_pci_write_register(pcr, PWD_SUSPEND_EN, 0xFF, 0xFF);
+	rtsx_pci_write_register(pcr, RBCTL, U_AUTO_DMA_EN_MASK, 0);
+	rtsx_pci_write_register(pcr, RTS5264_AUTOLOAD_CFG4,
+			RTS5264_F_HIGH_RC_MASK, RTS5264_F_HIGH_RC_400K);
+
+	if (pcr->rtd3_en) {
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+		rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+				FORCE_PM_CONTROL | FORCE_PM_VALUE, 0);
+	} else {
+		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+		rtsx_pci_write_register(pcr, RTS5264_REG_PME_FORCE_CTL,
+				FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+	}
+	rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, D3_DELINK_MODE_EN, 0x00);
+
+	/* Clear Enter RTD3_cold Information*/
+	rtsx_pci_write_register(pcr, RTS5264_FW_CTL,
+		RTS5264_INFORM_RTD3_COLD, 0);
+
+	return 0;
+}
+
+static int rts5264_optimize_phy(struct rtsx_pcr *pcr)
+{
+	u16 subvendor, subdevice, val;
+
+	subvendor = pcr->pci->subsystem_vendor;
+	subdevice = pcr->pci->subsystem_device;
+
+	if ((subvendor == 0x1028) && (subdevice == 0x0CE1)) {
+		rtsx_pci_read_phy_register(pcr, _PHY_REV0, &val);
+		if ((val & 0xFE00) > 0x3800)
+			rtsx_pci_update_phy(pcr, _PHY_REV0, 0x1FF, 0x3800);
+	}
+
+	if (is_version(pcr, PID_5264, RTS5264_IC_VER_B))
+		rtsx_pci_write_phy_register(pcr, 0x00, 0x5B79);
+
+	return 0;
+}
+
+static void rts5264_enable_aspm(struct rtsx_pcr *pcr, bool enable)
+{
+	u8 val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
+	u8 mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
+
+	if (pcr->aspm_enabled == enable)
+		return;
+
+	val |= (pcr->aspm_en & 0x02);
+	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
+	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
+					   PCI_EXP_LNKCTL_ASPMC, pcr->aspm_en);
+	pcr->aspm_enabled = enable;
+}
+
+static void rts5264_disable_aspm(struct rtsx_pcr *pcr, bool enable)
+{
+	u8 val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
+	u8 mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
+
+	if (pcr->aspm_enabled == enable)
+		return;
+
+	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
+					   PCI_EXP_LNKCTL_ASPMC, 0);
+	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
+	rtsx_pci_write_register(pcr, SD_CFG1, SD_ASYNC_FIFO_NOT_RST, 0);
+	udelay(10);
+	pcr->aspm_enabled = enable;
+}
+
+static void rts5264_set_aspm(struct rtsx_pcr *pcr, bool enable)
+{
+	if (enable)
+		rts5264_enable_aspm(pcr, true);
+	else
+		rts5264_disable_aspm(pcr, false);
+}
+
+static void rts5264_set_l1off_cfg_sub_d0(struct rtsx_pcr *pcr, int active)
+{
+	struct rtsx_cr_option *option = &(pcr->option);
+
+	u32 interrupt = rtsx_pci_readl(pcr, RTSX_BIPR);
+	int card_exist = (interrupt & SD_EXIST);
+	int aspm_L1_1, aspm_L1_2;
+	u8 val = 0;
+
+	aspm_L1_1 = rtsx_check_dev_flag(pcr, ASPM_L1_1_EN);
+	aspm_L1_2 = rtsx_check_dev_flag(pcr, ASPM_L1_2_EN);
+
+	if (active) {
+		/* Run, latency: 60us */
+		if (aspm_L1_1)
+			val = option->ltr_l1off_snooze_sspwrgate;
+	} else {
+		/* L1off, latency: 300us */
+		if (aspm_L1_2)
+			val = option->ltr_l1off_sspwrgate;
+	}
+
+	if (aspm_L1_1 || aspm_L1_2) {
+		if (rtsx_check_dev_flag(pcr,
+					LTR_L1SS_PWR_GATE_CHECK_CARD_EN)) {
+			if (card_exist)
+				val &= ~L1OFF_MBIAS2_EN_5250;
+			else
+				val |= L1OFF_MBIAS2_EN_5250;
+		}
+	}
+	rtsx_set_l1off_sub(pcr, val);
+}
+
+static const struct pcr_ops rts5264_pcr_ops = {
+	.turn_on_led = rts5264_turn_on_led,
+	.turn_off_led = rts5264_turn_off_led,
+	.extra_init_hw = rts5264_extra_init_hw,
+	.optimize_phy = rts5264_optimize_phy,
+	.enable_auto_blink = rts5264_enable_auto_blink,
+	.disable_auto_blink = rts5264_disable_auto_blink,
+	.card_power_on = rts5264_card_power_on,
+	.card_power_off = rts5264_card_power_off,
+	.switch_output_voltage = rts5264_switch_output_voltage,
+	.force_power_down = rts5264_force_power_down,
+	.stop_cmd = rts5264_stop_cmd,
+	.set_aspm = rts5264_set_aspm,
+	.set_l1off_cfg_sub_d0 = rts5264_set_l1off_cfg_sub_d0,
+	.enable_ocp = rts5264_enable_ocp,
+	.disable_ocp = rts5264_disable_ocp,
+	.init_ocp = rts5264_init_ocp,
+	.process_ocp = rts5264_process_ocp,
+	.clear_ocpstat = rts5264_clear_ocpstat,
+};
+
+static inline u8 double_ssc_depth(u8 depth)
+{
+	return ((depth > 1) ? (depth - 1) : depth);
+}
+
+int rts5264_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
+		u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk)
+{
+	int err, clk;
+	u16 n;
+	u8 clk_divider, mcu_cnt, div;
+	static const u8 depth[] = {
+		[RTSX_SSC_DEPTH_4M] = RTS5264_SSC_DEPTH_4M,
+		[RTSX_SSC_DEPTH_2M] = RTS5264_SSC_DEPTH_2M,
+		[RTSX_SSC_DEPTH_1M] = RTS5264_SSC_DEPTH_1M,
+		[RTSX_SSC_DEPTH_500K] = RTS5264_SSC_DEPTH_512K,
+	};
+
+	if (initial_mode) {
+		/* We use 250k(around) here, in initial stage */
+		clk_divider = SD_CLK_DIVIDE_128;
+		card_clock = 30000000;
+	} else {
+		clk_divider = SD_CLK_DIVIDE_0;
+	}
+	err = rtsx_pci_write_register(pcr, SD_CFG1,
+			SD_CLK_DIVIDE_MASK, clk_divider);
+	if (err < 0)
+		return err;
+
+	card_clock /= 1000000;
+	pcr_dbg(pcr, "Switch card clock to %dMHz\n", card_clock);
+
+	clk = card_clock;
+	if (!initial_mode && double_clk)
+		clk = card_clock * 2;
+	pcr_dbg(pcr, "Internal SSC clock: %dMHz (cur_clock = %d)\n",
+		clk, pcr->cur_clock);
+
+	if (clk == pcr->cur_clock)
+		return 0;
+
+	if (pcr->ops->conv_clk_and_div_n)
+		n = pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N);
+	else
+		n = clk - 4;
+	if ((clk <= 4) || (n > 396))
+		return -EINVAL;
+
+	mcu_cnt = 125/clk + 3;
+	if (mcu_cnt > 15)
+		mcu_cnt = 15;
+
+	div = CLK_DIV_1;
+	while ((n < MIN_DIV_N_PCR - 4) && (div < CLK_DIV_8)) {
+		if (pcr->ops->conv_clk_and_div_n) {
+			int dbl_clk = pcr->ops->conv_clk_and_div_n(n,
+					DIV_N_TO_CLK) * 2;
+			n = pcr->ops->conv_clk_and_div_n(dbl_clk,
+					CLK_TO_DIV_N);
+		} else {
+			n = (n + 4) * 2 - 4;
+		}
+		div++;
+	}
+
+	n = (n / 2) - 1;
+	pcr_dbg(pcr, "n = %d, div = %d\n", n, div);
+
+	ssc_depth = depth[ssc_depth];
+	if (double_clk)
+		ssc_depth = double_ssc_depth(ssc_depth);
+
+	if (ssc_depth) {
+		if (div == CLK_DIV_2) {
+			if (ssc_depth > 1)
+				ssc_depth -= 1;
+			else
+				ssc_depth = RTS5264_SSC_DEPTH_8M;
+		} else if (div == CLK_DIV_4) {
+			if (ssc_depth > 2)
+				ssc_depth -= 2;
+			else
+				ssc_depth = RTS5264_SSC_DEPTH_8M;
+		} else if (div == CLK_DIV_8) {
+			if (ssc_depth > 3)
+				ssc_depth -= 3;
+			else
+				ssc_depth = RTS5264_SSC_DEPTH_8M;
+		}
+	} else {
+		ssc_depth = 0;
+	}
+	pcr_dbg(pcr, "ssc_depth = %d\n", ssc_depth);
+
+	rtsx_pci_init_cmd(pcr);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+				CHANGE_CLK, CHANGE_CLK);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV,
+			0xFF, (div << 4) | mcu_cnt);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2,
+			SSC_DEPTH_MASK, ssc_depth);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
+
+	if (is_version(pcr, PID_5264, RTS5264_IC_VER_A)) {
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS5264_CARD_CLK_SRC2,
+			RTS5264_REG_BIG_KVCO_A, 0);
+	} else {
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS5264_SYS_DUMMY_1,
+			RTS5264_REG_BIG_KVCO, 0);
+	}
+
+	if (vpclk) {
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+				PHASE_NOT_RESET, 0);
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK1_CTL,
+				PHASE_NOT_RESET, 0);
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+				PHASE_NOT_RESET, PHASE_NOT_RESET);
+		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK1_CTL,
+				PHASE_NOT_RESET, PHASE_NOT_RESET);
+	}
+
+	err = rtsx_pci_send_cmd(pcr, 2000);
+	if (err < 0)
+		return err;
+
+	/* Wait SSC clock stable */
+	udelay(SSC_CLOCK_STABLE_WAIT);
+	err = rtsx_pci_write_register(pcr, CLK_CTL, CHANGE_CLK, 0);
+	if (err < 0)
+		return err;
+
+	pcr->cur_clock = clk;
+	return 0;
+}
+
+void rts5264_init_params(struct rtsx_pcr *pcr)
+{
+	struct rtsx_cr_option *option = &pcr->option;
+	struct rtsx_hw_param *hw_param = &pcr->hw_param;
+	u8 val;
+
+	pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
+	pcr->extra_caps |= EXTRA_CAPS_NO_MMC;
+	rtsx_pci_read_register(pcr, RTS5264_FW_STATUS, &val);
+	if (!(val & RTS5264_EXPRESS_LINK_FAIL_MASK))
+		pcr->extra_caps |= EXTRA_CAPS_SD_EXPRESS;
+	pcr->num_slots = 1;
+	pcr->ops = &rts5264_pcr_ops;
+
+	pcr->flags = 0;
+	pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
+	pcr->sd30_drive_sel_1v8 = 0x00;
+	pcr->sd30_drive_sel_3v3 = 0x00;
+	pcr->aspm_en = ASPM_L1_EN;
+	pcr->aspm_mode = ASPM_MODE_REG;
+	pcr->tx_initial_phase = SET_CLOCK_PHASE(24, 24, 11);
+	pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
+
+	pcr->ic_version = rts5264_get_ic_version(pcr);
+	pcr->sd_pull_ctl_enable_tbl = rts5264_sd_pull_ctl_enable_tbl;
+	pcr->sd_pull_ctl_disable_tbl = rts5264_sd_pull_ctl_disable_tbl;
+
+	pcr->reg_pm_ctrl3 = RTS5264_AUTOLOAD_CFG3;
+
+	option->dev_flags = (LTR_L1SS_PWR_GATE_CHECK_CARD_EN
+				| LTR_L1SS_PWR_GATE_EN);
+	option->ltr_en = true;
+
+	/* init latency of active, idle, L1OFF to 60us, 300us, 3ms */
+	option->ltr_active_latency = LTR_ACTIVE_LATENCY_DEF;
+	option->ltr_idle_latency = LTR_IDLE_LATENCY_DEF;
+	option->ltr_l1off_latency = LTR_L1OFF_LATENCY_DEF;
+	option->l1_snooze_delay = L1_SNOOZE_DELAY_DEF;
+	option->ltr_l1off_sspwrgate = 0x7F;
+	option->ltr_l1off_snooze_sspwrgate = 0x78;
+
+	option->ocp_en = 1;
+	hw_param->interrupt_en |= (SD_OC_INT_EN | SD_OVP_INT_EN);
+	hw_param->ocp_glitch =  SD_OCP_GLITCH_800U | SDVIO_OCP_GLITCH_800U;
+	option->sd_800mA_ocp_thd =  RTS5264_LDO1_OCP_THD_1150;
+	option->sd_cd_reverse_en = 0;
+	option->sd_wp_reverse_en = 0;
+}