drivers/misc/cardreader/rts5227.c - linux - Git at Google

 // 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:
  *   Wei WANG <wei_wang@realsil.com.cn>
  *   Roger Tseng <rogerable@realtek.com>
  */

 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/rtsx_pci.h>

 #include "rtsx_pcr.h"

 static u8 rts5227_get_ic_version(struct rtsx_pcr *pcr)
 {
 	u8 val;

 	rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
 	return val & 0x0F;
 }

 static void rts5227_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
 {
 	u8 driving_3v3[4][3] = {
 		{0x13, 0x13, 0x13},
 		{0x96, 0x96, 0x96},
 		{0x7F, 0x7F, 0x7F},
 		{0x96, 0x96, 0x96},
 	};
 	u8 driving_1v8[4][3] = {
 		{0x99, 0x99, 0x99},
 		{0xAA, 0xAA, 0xAA},
 		{0xFE, 0xFE, 0xFE},
 		{0xB3, 0xB3, 0xB3},
 	};
 	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_add_cmd(pcr, WRITE_REG_CMD, SD30_CLK_DRIVE_SEL,
 			0xFF, driving[drive_sel][0]);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CMD_DRIVE_SEL,
 			0xFF, driving[drive_sel][1]);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DAT_DRIVE_SEL,
 			0xFF, driving[drive_sel][2]);
 }

 static void rts5227_fetch_vendor_settings(struct rtsx_pcr *pcr)
 {
 	u32 reg;

 	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg);
 	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);

 	if (!rtsx_vendor_setting_valid(reg))
 		return;

 	pcr->aspm_en = rtsx_reg_to_aspm(reg);
 	pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
 	pcr->card_drive_sel &= 0x3F;
 	pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg);

 	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG2, &reg);
 	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
 	pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
 	if (rtsx_reg_check_reverse_socket(reg))
 		pcr->flags |= PCR_REVERSE_SOCKET;
 }

 static void rts5227_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
 	/* Set relink_time to 0 */
 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
 	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);

 	if (pm_state == HOST_ENTER_S3)
 		rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x10);

 	rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
 }

 static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
 {
 	u16 cap;

 	rtsx_pci_init_cmd(pcr);

 	/* Configure GPIO as output */
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, GPIO_CTL, 0x02, 0x02);
 	/* Reset ASPM state to default value */
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
 	/* Switch LDO3318 source from DV33 to card_3v3 */
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x00);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x01);
 	/* LED shine disabled, set initial shine cycle period */
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OLT_LED_CTL, 0x0F, 0x02);
 	/* Configure LTR */
 	pcie_capability_read_word(pcr->pci, PCI_EXP_DEVCTL2, &cap);
 	if (cap & PCI_EXP_DEVCTL2_LTR_EN)
 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LTR_CTL, 0xFF, 0xA3);
 	/* Configure OBFF */
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OBFF_CFG, 0x03, 0x03);
 	/* Configure driving */
 	rts5227_fill_driving(pcr, OUTPUT_3V3);
 	/* Configure force_clock_req */
 	if (pcr->flags & PCR_REVERSE_SOCKET)
 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB8, 0xB8);
 	else
 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB8, 0x88);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, pcr->reg_pm_ctrl3, 0x10, 0x00);

 	return rtsx_pci_send_cmd(pcr, 100);
 }

 static int rts5227_optimize_phy(struct rtsx_pcr *pcr)
 {
 	int err;

 	err = rtsx_pci_write_register(pcr, PM_CTRL3, D3_DELINK_MODE_EN, 0x00);
 	if (err < 0)
 		return err;

 	/* Optimize RX sensitivity */
 	return rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42);
 }

 static int rts5227_turn_on_led(struct rtsx_pcr *pcr)
 {
 	return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x02);
 }

 static int rts5227_turn_off_led(struct rtsx_pcr *pcr)
 {
 	return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x00);
 }

 static int rts5227_enable_auto_blink(struct rtsx_pcr *pcr)
 {
 	return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x08);
 }

 static int rts5227_disable_auto_blink(struct rtsx_pcr *pcr)
 {
 	return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x00);
 }

 static int rts5227_card_power_on(struct rtsx_pcr *pcr, int card)
 {
 	int err;

 	if (pcr->option.ocp_en)
 		rtsx_pci_enable_ocp(pcr);

 	rtsx_pci_init_cmd(pcr);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
 			SD_POWER_MASK, SD_PARTIAL_POWER_ON);

 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
 			LDO3318_PWR_MASK, 0x02);

 	err = rtsx_pci_send_cmd(pcr, 100);
 	if (err < 0)
 		return err;

 	/* To avoid too large in-rush current */
 	msleep(20);
 	rtsx_pci_init_cmd(pcr);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
 			SD_POWER_MASK, SD_POWER_ON);

 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
 			LDO3318_PWR_MASK, 0x06);

 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE,
 			SD_OUTPUT_EN, SD_OUTPUT_EN);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE,
 			MS_OUTPUT_EN, MS_OUTPUT_EN);
 	return rtsx_pci_send_cmd(pcr, 100);
 }

 static int rts5227_card_power_off(struct rtsx_pcr *pcr, int card)
 {
 	if (pcr->option.ocp_en)
 		rtsx_pci_disable_ocp(pcr);

 	rtsx_pci_write_register(pcr, CARD_PWR_CTL, SD_POWER_MASK |
 			PMOS_STRG_MASK, SD_POWER_OFF | PMOS_STRG_400mA);
 	rtsx_pci_write_register(pcr, PWR_GATE_CTRL, LDO3318_PWR_MASK, 0X00);

 	return 0;
 }

 static int rts5227_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
 {
 	int err;

 	if (voltage == OUTPUT_3V3) {
 		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
 		if (err < 0)
 			return err;
 	} else if (voltage == OUTPUT_1V8) {
 		err = rtsx_pci_write_phy_register(pcr, 0x11, 0x3C02);
 		if (err < 0)
 			return err;
 		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C80 | 0x24);
 		if (err < 0)
 			return err;
 	} else {
 		return -EINVAL;
 	}

 	/* set pad drive */
 	rtsx_pci_init_cmd(pcr);
 	rts5227_fill_driving(pcr, voltage);
 	return rtsx_pci_send_cmd(pcr, 100);
 }

 static const struct pcr_ops rts5227_pcr_ops = {
 	.fetch_vendor_settings = rts5227_fetch_vendor_settings,
 	.extra_init_hw = rts5227_extra_init_hw,
 	.optimize_phy = rts5227_optimize_phy,
 	.turn_on_led = rts5227_turn_on_led,
 	.turn_off_led = rts5227_turn_off_led,
 	.enable_auto_blink = rts5227_enable_auto_blink,
 	.disable_auto_blink = rts5227_disable_auto_blink,
 	.card_power_on = rts5227_card_power_on,
 	.card_power_off = rts5227_card_power_off,
 	.switch_output_voltage = rts5227_switch_output_voltage,
 	.cd_deglitch = NULL,
 	.conv_clk_and_div_n = NULL,
 	.force_power_down = rts5227_force_power_down,
 };

 /* 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 rts5227_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 rts5227_sd_pull_ctl_disable_tbl[] = {
 	RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
 	RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
 	0,
 };

 /* MS Pull Control Enable:
  *     MS CD       ==> pull up
  *     others      ==> pull down
  */
 static const u32 rts5227_ms_pull_ctl_enable_tbl[] = {
 	RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
 	RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
 	0,
 };

 /* MS Pull Control Disable:
  *     MS CD       ==> pull up
  *     others      ==> pull down
  */
 static const u32 rts5227_ms_pull_ctl_disable_tbl[] = {
 	RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
 	RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
 	0,
 };

 void rts5227_init_params(struct rtsx_pcr *pcr)
 {
 	pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
 	pcr->num_slots = 2;
 	pcr->ops = &rts5227_pcr_ops;

 	pcr->flags = 0;
 	pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
 	pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
 	pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
 	pcr->aspm_en = ASPM_L1_EN;
 	pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15);
 	pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 7, 7);

 	pcr->ic_version = rts5227_get_ic_version(pcr);
 	pcr->sd_pull_ctl_enable_tbl = rts5227_sd_pull_ctl_enable_tbl;
 	pcr->sd_pull_ctl_disable_tbl = rts5227_sd_pull_ctl_disable_tbl;
 	pcr->ms_pull_ctl_enable_tbl = rts5227_ms_pull_ctl_enable_tbl;
 	pcr->ms_pull_ctl_disable_tbl = rts5227_ms_pull_ctl_disable_tbl;

 	pcr->reg_pm_ctrl3 = PM_CTRL3;
 }

 static int rts522a_optimize_phy(struct rtsx_pcr *pcr)
 {
 	int err;

 	err = rtsx_pci_write_register(pcr, RTS522A_PM_CTRL3, D3_DELINK_MODE_EN,
 		0x00);
 	if (err < 0)
 		return err;

 	if (is_version(pcr, 0x522A, IC_VER_A)) {
 		err = rtsx_pci_write_phy_register(pcr, PHY_RCR2,
 			PHY_RCR2_INIT_27S);
 		if (err)
 			return err;

 		rtsx_pci_write_phy_register(pcr, PHY_RCR1, PHY_RCR1_INIT_27S);
 		rtsx_pci_write_phy_register(pcr, PHY_FLD0, PHY_FLD0_INIT_27S);
 		rtsx_pci_write_phy_register(pcr, PHY_FLD3, PHY_FLD3_INIT_27S);
 		rtsx_pci_write_phy_register(pcr, PHY_FLD4, PHY_FLD4_INIT_27S);
 	}

 	return 0;
 }

 static int rts522a_extra_init_hw(struct rtsx_pcr *pcr)
 {
 	rts5227_extra_init_hw(pcr);

 	rtsx_pci_write_register(pcr, FUNC_FORCE_CTL, FUNC_FORCE_UPME_XMT_DBG,
 		FUNC_FORCE_UPME_XMT_DBG);
 	rtsx_pci_write_register(pcr, PCLK_CTL, 0x04, 0x04);
 	rtsx_pci_write_register(pcr, PM_EVENT_DEBUG, PME_DEBUG_0, PME_DEBUG_0);
 	rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, 0xFF, 0x11);

 	return 0;
 }

 static int rts522a_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
 {
 	int err;

 	if (voltage == OUTPUT_3V3) {
 		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x57E4);
 		if (err < 0)
 			return err;
 	} else if (voltage == OUTPUT_1V8) {
 		err = rtsx_pci_write_phy_register(pcr, 0x11, 0x3C02);
 		if (err < 0)
 			return err;
 		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x54A4);
 		if (err < 0)
 			return err;
 	} else {
 		return -EINVAL;
 	}

 	/* set pad drive */
 	rtsx_pci_init_cmd(pcr);
 	rts5227_fill_driving(pcr, voltage);
 	return rtsx_pci_send_cmd(pcr, 100);
 }


 /* rts522a operations mainly derived from rts5227, except phy/hw init setting.
  */
 static const struct pcr_ops rts522a_pcr_ops = {
 	.fetch_vendor_settings = rts5227_fetch_vendor_settings,
 	.extra_init_hw = rts522a_extra_init_hw,
 	.optimize_phy = rts522a_optimize_phy,
 	.turn_on_led = rts5227_turn_on_led,
 	.turn_off_led = rts5227_turn_off_led,
 	.enable_auto_blink = rts5227_enable_auto_blink,
 	.disable_auto_blink = rts5227_disable_auto_blink,
 	.card_power_on = rts5227_card_power_on,
 	.card_power_off = rts5227_card_power_off,
 	.switch_output_voltage = rts522a_switch_output_voltage,
 	.cd_deglitch = NULL,
 	.conv_clk_and_div_n = NULL,
 	.force_power_down = rts5227_force_power_down,
 };

 void rts522a_init_params(struct rtsx_pcr *pcr)
 {
 	rts5227_init_params(pcr);
 	pcr->ops = &rts522a_pcr_ops;
 	pcr->tx_initial_phase = SET_CLOCK_PHASE(20, 20, 11);
 	pcr->reg_pm_ctrl3 = RTS522A_PM_CTRL3;

 	pcr->option.ocp_en = 1;
 	if (pcr->option.ocp_en)
 		pcr->hw_param.interrupt_en |= SD_OC_INT_EN;
 	pcr->hw_param.ocp_glitch = SD_OCP_GLITCH_10M;
 	pcr->option.sd_800mA_ocp_thd = RTS522A_OCP_THD_800;

 }
	// 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:
	* Wei WANG <wei_wang@realsil.com.cn>
	* Roger Tseng <rogerable@realtek.com>
	*/

	#include <linux/module.h>
	#include <linux/delay.h>
	#include <linux/rtsx_pci.h>

	#include "rtsx_pcr.h"

	static u8 rts5227_get_ic_version(struct rtsx_pcr *pcr)
	{
	u8 val;

	rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
	return val & 0x0F;
	}

	static void rts5227_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
	{
	u8 driving_3v3[4][3] = {
	{0x13, 0x13, 0x13},
	{0x96, 0x96, 0x96},
	{0x7F, 0x7F, 0x7F},
	{0x96, 0x96, 0x96},
	};
	u8 driving_1v8[4][3] = {
	{0x99, 0x99, 0x99},
	{0xAA, 0xAA, 0xAA},
	{0xFE, 0xFE, 0xFE},
	{0xB3, 0xB3, 0xB3},
	};
	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_add_cmd(pcr, WRITE_REG_CMD, SD30_CLK_DRIVE_SEL,
	0xFF, driving[drive_sel][0]);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CMD_DRIVE_SEL,
	0xFF, driving[drive_sel][1]);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DAT_DRIVE_SEL,
	0xFF, driving[drive_sel][2]);
	}

	static void rts5227_fetch_vendor_settings(struct rtsx_pcr *pcr)
	{
	u32 reg;

	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg);
	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);

	if (!rtsx_vendor_setting_valid(reg))
	return;

	pcr->aspm_en = rtsx_reg_to_aspm(reg);
	pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
	pcr->card_drive_sel &= 0x3F;
	pcr->card_drive_sel \|= rtsx_reg_to_card_drive_sel(reg);

	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG2, &reg);
	pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
	pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
	if (rtsx_reg_check_reverse_socket(reg))
	pcr->flags \|= PCR_REVERSE_SOCKET;
	}

	static void rts5227_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
	{
	/* Set relink_time to 0 */
	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
	rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);

	if (pm_state == HOST_ENTER_S3)
	rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x10);

	rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
	}

	static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
	{
	u16 cap;

	rtsx_pci_init_cmd(pcr);

	/* Configure GPIO as output */
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, GPIO_CTL, 0x02, 0x02);
	/* Reset ASPM state to default value */
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
	/* Switch LDO3318 source from DV33 to card_3v3 */
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x00);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x01);
	/* LED shine disabled, set initial shine cycle period */
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OLT_LED_CTL, 0x0F, 0x02);
	/* Configure LTR */
	pcie_capability_read_word(pcr->pci, PCI_EXP_DEVCTL2, &cap);
	if (cap & PCI_EXP_DEVCTL2_LTR_EN)
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LTR_CTL, 0xFF, 0xA3);
	/* Configure OBFF */
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OBFF_CFG, 0x03, 0x03);
	/* Configure driving */
	rts5227_fill_driving(pcr, OUTPUT_3V3);
	/* Configure force_clock_req */
	if (pcr->flags & PCR_REVERSE_SOCKET)
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB8, 0xB8);
	else
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB8, 0x88);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, pcr->reg_pm_ctrl3, 0x10, 0x00);

	return rtsx_pci_send_cmd(pcr, 100);
	}

	static int rts5227_optimize_phy(struct rtsx_pcr *pcr)
	{
	int err;

	err = rtsx_pci_write_register(pcr, PM_CTRL3, D3_DELINK_MODE_EN, 0x00);
	if (err < 0)
	return err;

	/* Optimize RX sensitivity */
	return rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42);
	}

	static int rts5227_turn_on_led(struct rtsx_pcr *pcr)
	{
	return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x02);
	}

	static int rts5227_turn_off_led(struct rtsx_pcr *pcr)
	{
	return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x00);
	}

	static int rts5227_enable_auto_blink(struct rtsx_pcr *pcr)
	{
	return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x08);
	}

	static int rts5227_disable_auto_blink(struct rtsx_pcr *pcr)
	{
	return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x00);
	}

	static int rts5227_card_power_on(struct rtsx_pcr *pcr, int card)
	{
	int err;

	if (pcr->option.ocp_en)
	rtsx_pci_enable_ocp(pcr);

	rtsx_pci_init_cmd(pcr);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
	SD_POWER_MASK, SD_PARTIAL_POWER_ON);

	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
	LDO3318_PWR_MASK, 0x02);

	err = rtsx_pci_send_cmd(pcr, 100);
	if (err < 0)
	return err;

	/* To avoid too large in-rush current */
	msleep(20);
	rtsx_pci_init_cmd(pcr);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
	SD_POWER_MASK, SD_POWER_ON);

	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
	LDO3318_PWR_MASK, 0x06);

	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE,
	SD_OUTPUT_EN, SD_OUTPUT_EN);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE,
	MS_OUTPUT_EN, MS_OUTPUT_EN);
	return rtsx_pci_send_cmd(pcr, 100);
	}

	static int rts5227_card_power_off(struct rtsx_pcr *pcr, int card)
	{
	if (pcr->option.ocp_en)
	rtsx_pci_disable_ocp(pcr);

	rtsx_pci_write_register(pcr, CARD_PWR_CTL, SD_POWER_MASK \|
	PMOS_STRG_MASK, SD_POWER_OFF \| PMOS_STRG_400mA);
	rtsx_pci_write_register(pcr, PWR_GATE_CTRL, LDO3318_PWR_MASK, 0X00);

	return 0;
	}

	static int rts5227_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
	{
	int err;

	if (voltage == OUTPUT_3V3) {
	err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 \| 0x24);
	if (err < 0)
	return err;
	} else if (voltage == OUTPUT_1V8) {
	err = rtsx_pci_write_phy_register(pcr, 0x11, 0x3C02);
	if (err < 0)
	return err;
	err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C80 \| 0x24);
	if (err < 0)
	return err;
	} else {
	return -EINVAL;
	}

	/* set pad drive */
	rtsx_pci_init_cmd(pcr);
	rts5227_fill_driving(pcr, voltage);
	return rtsx_pci_send_cmd(pcr, 100);
	}

	static const struct pcr_ops rts5227_pcr_ops = {
	.fetch_vendor_settings = rts5227_fetch_vendor_settings,
	.extra_init_hw = rts5227_extra_init_hw,
	.optimize_phy = rts5227_optimize_phy,
	.turn_on_led = rts5227_turn_on_led,
	.turn_off_led = rts5227_turn_off_led,
	.enable_auto_blink = rts5227_enable_auto_blink,
	.disable_auto_blink = rts5227_disable_auto_blink,
	.card_power_on = rts5227_card_power_on,
	.card_power_off = rts5227_card_power_off,
	.switch_output_voltage = rts5227_switch_output_voltage,
	.cd_deglitch = NULL,
	.conv_clk_and_div_n = NULL,
	.force_power_down = rts5227_force_power_down,
	};

	/* 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 rts5227_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 rts5227_sd_pull_ctl_disable_tbl[] = {
	RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
	RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
	0,
	};

	/* MS Pull Control Enable:
	* MS CD ==> pull up
	* others ==> pull down
	*/
	static const u32 rts5227_ms_pull_ctl_enable_tbl[] = {
	RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
	RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
	0,
	};

	/* MS Pull Control Disable:
	* MS CD ==> pull up
	* others ==> pull down
	*/
	static const u32 rts5227_ms_pull_ctl_disable_tbl[] = {
	RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
	RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
	0,
	};

	void rts5227_init_params(struct rtsx_pcr *pcr)
	{
	pcr->extra_caps = EXTRA_CAPS_SD_SDR50 \| EXTRA_CAPS_SD_SDR104;
	pcr->num_slots = 2;
	pcr->ops = &rts5227_pcr_ops;

	pcr->flags = 0;
	pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
	pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
	pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
	pcr->aspm_en = ASPM_L1_EN;
	pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15);
	pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 7, 7);

	pcr->ic_version = rts5227_get_ic_version(pcr);
	pcr->sd_pull_ctl_enable_tbl = rts5227_sd_pull_ctl_enable_tbl;
	pcr->sd_pull_ctl_disable_tbl = rts5227_sd_pull_ctl_disable_tbl;
	pcr->ms_pull_ctl_enable_tbl = rts5227_ms_pull_ctl_enable_tbl;
	pcr->ms_pull_ctl_disable_tbl = rts5227_ms_pull_ctl_disable_tbl;

	pcr->reg_pm_ctrl3 = PM_CTRL3;
	}

	static int rts522a_optimize_phy(struct rtsx_pcr *pcr)
	{
	int err;

	err = rtsx_pci_write_register(pcr, RTS522A_PM_CTRL3, D3_DELINK_MODE_EN,
	0x00);
	if (err < 0)
	return err;

	if (is_version(pcr, 0x522A, IC_VER_A)) {
	err = rtsx_pci_write_phy_register(pcr, PHY_RCR2,
	PHY_RCR2_INIT_27S);
	if (err)
	return err;

	rtsx_pci_write_phy_register(pcr, PHY_RCR1, PHY_RCR1_INIT_27S);
	rtsx_pci_write_phy_register(pcr, PHY_FLD0, PHY_FLD0_INIT_27S);
	rtsx_pci_write_phy_register(pcr, PHY_FLD3, PHY_FLD3_INIT_27S);
	rtsx_pci_write_phy_register(pcr, PHY_FLD4, PHY_FLD4_INIT_27S);
	}

	return 0;
	}

	static int rts522a_extra_init_hw(struct rtsx_pcr *pcr)
	{
	rts5227_extra_init_hw(pcr);

	rtsx_pci_write_register(pcr, FUNC_FORCE_CTL, FUNC_FORCE_UPME_XMT_DBG,
	FUNC_FORCE_UPME_XMT_DBG);
	rtsx_pci_write_register(pcr, PCLK_CTL, 0x04, 0x04);
	rtsx_pci_write_register(pcr, PM_EVENT_DEBUG, PME_DEBUG_0, PME_DEBUG_0);
	rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, 0xFF, 0x11);

	return 0;
	}

	static int rts522a_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
	{
	int err;

	if (voltage == OUTPUT_3V3) {
	err = rtsx_pci_write_phy_register(pcr, 0x08, 0x57E4);
	if (err < 0)
	return err;
	} else if (voltage == OUTPUT_1V8) {
	err = rtsx_pci_write_phy_register(pcr, 0x11, 0x3C02);
	if (err < 0)
	return err;
	err = rtsx_pci_write_phy_register(pcr, 0x08, 0x54A4);
	if (err < 0)
	return err;
	} else {
	return -EINVAL;
	}

	/* set pad drive */
	rtsx_pci_init_cmd(pcr);
	rts5227_fill_driving(pcr, voltage);
	return rtsx_pci_send_cmd(pcr, 100);
	}


	/* rts522a operations mainly derived from rts5227, except phy/hw init setting.
	*/
	static const struct pcr_ops rts522a_pcr_ops = {
	.fetch_vendor_settings = rts5227_fetch_vendor_settings,
	.extra_init_hw = rts522a_extra_init_hw,
	.optimize_phy = rts522a_optimize_phy,
	.turn_on_led = rts5227_turn_on_led,
	.turn_off_led = rts5227_turn_off_led,
	.enable_auto_blink = rts5227_enable_auto_blink,
	.disable_auto_blink = rts5227_disable_auto_blink,
	.card_power_on = rts5227_card_power_on,
	.card_power_off = rts5227_card_power_off,
	.switch_output_voltage = rts522a_switch_output_voltage,
	.cd_deglitch = NULL,
	.conv_clk_and_div_n = NULL,
	.force_power_down = rts5227_force_power_down,
	};

	void rts522a_init_params(struct rtsx_pcr *pcr)
	{
	rts5227_init_params(pcr);
	pcr->ops = &rts522a_pcr_ops;
	pcr->tx_initial_phase = SET_CLOCK_PHASE(20, 20, 11);
	pcr->reg_pm_ctrl3 = RTS522A_PM_CTRL3;

	pcr->option.ocp_en = 1;
	if (pcr->option.ocp_en)
	pcr->hw_param.interrupt_en \|= SD_OC_INT_EN;
	pcr->hw_param.ocp_glitch = SD_OCP_GLITCH_10M;
	pcr->option.sd_800mA_ocp_thd = RTS522A_OCP_THD_800;

	}