Release 4.11 drivers/mfd/rts5227.c

Directory: drivers/mfd
/* Driver for Realtek PCI-Express card reader
 *
 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Author:
 *   Wei WANG <wei_wang@realsil.com.cn>
 *   Roger Tseng <rogerable@realtek.com>
 */

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/mfd/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;
}

Contributors
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Micky Ching 29 100.00% 1 100.00%
Total 29 100.00% 1 100.00%



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]);
}

Contributors
Person Tokens Prop Commits CommitProp
Wei Wang 199 100.00% 1 100.00%
Total 199 100.00% 1 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Wei Wang 118 98.33% 1 50.00%
Micky Ching 2 1.67% 1 50.00%
Total 120 100.00% 2 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
Wei Wang 81 96.43% 2 66.67%
Micky Ching 3 3.57% 1 33.33%
Total 84 100.00% 3 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 163 81.09% 1 14.29%
Wei Wang 32 15.92% 3 42.86%
Micky Ching 5 2.49% 2 28.57%
Björn Helgaas 1 0.50% 1 14.29%
Total 201 100.00% 7 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
Micky Ching 25 53.19% 2 66.67%
Roger Tseng 22 46.81% 1 33.33%
Total 47 100.00% 3 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



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

	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 */
	udelay(150);

	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);
	return rtsx_pci_send_cmd(pcr, 100);
}

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 110 99.10% 1 50.00%
Javier Martinez Canillas 1 0.90% 1 50.00%
Total 111 100.00% 2 100.00%



static int rts5227_card_power_off(struct rtsx_pcr *pcr, int card)
{
	rtsx_pci_init_cmd(pcr);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
			SD_POWER_MASK | PMOS_STRG_MASK,
			SD_POWER_OFF | PMOS_STRG_400mA);
	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
			LDO3318_PWR_MASK, 0X00);
	return rtsx_pci_send_cmd(pcr, 100);
}

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 57 100.00% 1 100.00%
Total 57 100.00% 1 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 124 98.41% 1 50.00%
Wei Wang 2 1.59% 1 50.00%
Total 126 100.00% 2 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
Wei Wang 56 44.44% 2 50.00%
Roger Tseng 54 42.86% 1 25.00%
Micky Ching 16 12.70% 1 25.00%
Total 126 100.00% 4 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Micky Ching 106 100.00% 1 100.00%
Total 106 100.00% 1 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Micky Ching 63 100.00% 1 100.00%
Total 63 100.00% 1 100.00%

/* 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 = rts5227_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->reg_pm_ctrl3 = RTS522A_PM_CTRL3;
}
Contributors
Person Tokens Prop Commits CommitProp
Micky Ching 20 95.24% 1 50.00%
Roger Tseng 1 4.76% 1 50.00%
Total 21 100.00% 2 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
Roger Tseng 798 48.60% 1 7.14%
Wei Wang 499 30.39% 6 42.86%
Micky Ching 343 20.89% 5 35.71%
Björn Helgaas 1 0.06% 1 7.14%
Javier Martinez Canillas 1 0.06% 1 7.14%
Total 1642 100.00% 14 100.00%
Directory: drivers/mfd

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Micky Ching	29	100.00%	1	100.00%
Total	29	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/mfd/rts5227.c

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