| /* Driver for Realtek PCI-Express card reader |
| * |
| * Copyright(c) 2009 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> |
| * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/bitops.h> |
| #include <linux/delay.h> |
| #include <linux/mfd/rtsx_pci.h> |
| |
| #include "rtsx_pcr.h" |
| |
| static u8 rtl8411_get_ic_version(struct rtsx_pcr *pcr) |
| { |
| u8 val; |
| |
| rtsx_pci_read_register(pcr, SYS_VER, &val); |
| return val & 0x0F; |
| } |
| |
| static int rtl8411b_is_qfn48(struct rtsx_pcr *pcr) |
| { |
| u8 val = 0; |
| |
| rtsx_pci_read_register(pcr, RTL8411B_PACKAGE_MODE, &val); |
| |
| if (val & 0x2) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int rtl8411_extra_init_hw(struct rtsx_pcr *pcr) |
| { |
| return rtsx_pci_write_register(pcr, CD_PAD_CTL, |
| CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE); |
| } |
| |
| static int rtl8411b_extra_init_hw(struct rtsx_pcr *pcr) |
| { |
| if (rtl8411b_is_qfn48(pcr)) |
| rtsx_pci_write_register(pcr, CARD_PULL_CTL3, 0xFF, 0xF5); |
| |
| return rtsx_pci_write_register(pcr, CD_PAD_CTL, |
| CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE); |
| } |
| |
| static int rtl8411_turn_on_led(struct rtsx_pcr *pcr) |
| { |
| return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00); |
| } |
| |
| static int rtl8411_turn_off_led(struct rtsx_pcr *pcr) |
| { |
| return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01); |
| } |
| |
| static int rtl8411_enable_auto_blink(struct rtsx_pcr *pcr) |
| { |
| return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D); |
| } |
| |
| static int rtl8411_disable_auto_blink(struct rtsx_pcr *pcr) |
| { |
| return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00); |
| } |
| |
| static int rtl8411_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, |
| BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON); |
| rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_CTL, |
| BPP_LDO_POWB, BPP_LDO_SUSPEND); |
| err = rtsx_pci_send_cmd(pcr, 100); |
| if (err < 0) |
| return err; |
| |
| /* To avoid too large in-rush current */ |
| udelay(150); |
| |
| err = rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_10_PERCENT_ON); |
| if (err < 0) |
| return err; |
| |
| udelay(150); |
| |
| err = rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_15_PERCENT_ON); |
| if (err < 0) |
| return err; |
| |
| udelay(150); |
| |
| err = rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_ON); |
| if (err < 0) |
| return err; |
| |
| return rtsx_pci_write_register(pcr, LDO_CTL, BPP_LDO_POWB, BPP_LDO_ON); |
| } |
| |
| static int rtl8411_card_power_off(struct rtsx_pcr *pcr, int card) |
| { |
| int err; |
| |
| err = rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_OFF); |
| if (err < 0) |
| return err; |
| |
| return rtsx_pci_write_register(pcr, LDO_CTL, |
| BPP_LDO_POWB, BPP_LDO_SUSPEND); |
| } |
| |
| static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) |
| { |
| u8 mask, val; |
| int err; |
| |
| mask = (BPP_REG_TUNED18 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_MASK; |
| if (voltage == OUTPUT_3V3) { |
| err = rtsx_pci_write_register(pcr, |
| SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D); |
| if (err < 0) |
| return err; |
| val = (BPP_ASIC_3V3 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_3V3; |
| } else if (voltage == OUTPUT_1V8) { |
| err = rtsx_pci_write_register(pcr, |
| SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B); |
| if (err < 0) |
| return err; |
| val = (BPP_ASIC_1V8 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_1V8; |
| } else { |
| return -EINVAL; |
| } |
| |
| return rtsx_pci_write_register(pcr, LDO_CTL, mask, val); |
| } |
| |
| static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr *pcr) |
| { |
| unsigned int card_exist; |
| |
| card_exist = rtsx_pci_readl(pcr, RTSX_BIPR); |
| card_exist &= CARD_EXIST; |
| if (!card_exist) { |
| /* Enable card CD */ |
| rtsx_pci_write_register(pcr, CD_PAD_CTL, |
| CD_DISABLE_MASK, CD_ENABLE); |
| /* Enable card interrupt */ |
| rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x00); |
| return 0; |
| } |
| |
| if (hweight32(card_exist) > 1) { |
| rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON); |
| msleep(100); |
| |
| card_exist = rtsx_pci_readl(pcr, RTSX_BIPR); |
| if (card_exist & MS_EXIST) |
| card_exist = MS_EXIST; |
| else if (card_exist & SD_EXIST) |
| card_exist = SD_EXIST; |
| else |
| card_exist = 0; |
| |
| rtsx_pci_write_register(pcr, CARD_PWR_CTL, |
| BPP_POWER_MASK, BPP_POWER_OFF); |
| |
| dev_dbg(&(pcr->pci->dev), |
| "After CD deglitch, card_exist = 0x%x\n", |
| card_exist); |
| } |
| |
| if (card_exist & MS_EXIST) { |
| /* Disable SD interrupt */ |
| rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x40); |
| rtsx_pci_write_register(pcr, CD_PAD_CTL, |
| CD_DISABLE_MASK, MS_CD_EN_ONLY); |
| } else if (card_exist & SD_EXIST) { |
| /* Disable MS interrupt */ |
| rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x80); |
| rtsx_pci_write_register(pcr, CD_PAD_CTL, |
| CD_DISABLE_MASK, SD_CD_EN_ONLY); |
| } |
| |
| return card_exist; |
| } |
| |
| static int rtl8411_conv_clk_and_div_n(int input, int dir) |
| { |
| int output; |
| |
| if (dir == CLK_TO_DIV_N) |
| output = input * 4 / 5 - 2; |
| else |
| output = (input + 2) * 5 / 4; |
| |
| return output; |
| } |
| |
| static const struct pcr_ops rtl8411_pcr_ops = { |
| .extra_init_hw = rtl8411_extra_init_hw, |
| .optimize_phy = NULL, |
| .turn_on_led = rtl8411_turn_on_led, |
| .turn_off_led = rtl8411_turn_off_led, |
| .enable_auto_blink = rtl8411_enable_auto_blink, |
| .disable_auto_blink = rtl8411_disable_auto_blink, |
| .card_power_on = rtl8411_card_power_on, |
| .card_power_off = rtl8411_card_power_off, |
| .switch_output_voltage = rtl8411_switch_output_voltage, |
| .cd_deglitch = rtl8411_cd_deglitch, |
| .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n, |
| }; |
| |
| static const struct pcr_ops rtl8411b_pcr_ops = { |
| .extra_init_hw = rtl8411b_extra_init_hw, |
| .optimize_phy = NULL, |
| .turn_on_led = rtl8411_turn_on_led, |
| .turn_off_led = rtl8411_turn_off_led, |
| .enable_auto_blink = rtl8411_enable_auto_blink, |
| .disable_auto_blink = rtl8411_disable_auto_blink, |
| .card_power_on = rtl8411_card_power_on, |
| .card_power_off = rtl8411_card_power_off, |
| .switch_output_voltage = rtl8411_switch_output_voltage, |
| .cd_deglitch = rtl8411_cd_deglitch, |
| .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n, |
| }; |
| |
| /* 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 rtl8411_sd_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0xA9), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x09), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04), |
| 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 rtl8411_sd_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04), |
| 0, |
| }; |
| |
| /* MS Pull Control Enable: |
| * MS CD ==> pull up |
| * others ==> pull down |
| */ |
| static const u32 rtl8411_ms_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04), |
| 0, |
| }; |
| |
| /* MS Pull Control Disable: |
| * MS CD ==> pull up |
| * others ==> pull down |
| */ |
| static const u32 rtl8411_ms_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn64_sd_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x09 | 0xD0), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn48_sd_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x69 | 0x90), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x08 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn64_sd_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn48_sd_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn64_ms_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn48_ms_pull_ctl_enable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn64_ms_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65), |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0), |
| RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| static const u32 rtl8411b_qfn48_ms_pull_ctl_disable_tbl[] = { |
| RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
| RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90), |
| RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11), |
| 0, |
| }; |
| |
| void rtl8411_init_params(struct rtsx_pcr *pcr) |
| { |
| pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104; |
| pcr->num_slots = 2; |
| pcr->ops = &rtl8411_pcr_ops; |
| |
| pcr->ic_version = rtl8411_get_ic_version(pcr); |
| pcr->sd_pull_ctl_enable_tbl = rtl8411_sd_pull_ctl_enable_tbl; |
| pcr->sd_pull_ctl_disable_tbl = rtl8411_sd_pull_ctl_disable_tbl; |
| pcr->ms_pull_ctl_enable_tbl = rtl8411_ms_pull_ctl_enable_tbl; |
| pcr->ms_pull_ctl_disable_tbl = rtl8411_ms_pull_ctl_disable_tbl; |
| } |
| |
| void rtl8411b_init_params(struct rtsx_pcr *pcr) |
| { |
| pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104; |
| pcr->num_slots = 2; |
| pcr->ops = &rtl8411b_pcr_ops; |
| |
| pcr->ic_version = rtl8411_get_ic_version(pcr); |
| |
| if (rtl8411b_is_qfn48(pcr)) { |
| pcr->sd_pull_ctl_enable_tbl = |
| rtl8411b_qfn48_sd_pull_ctl_enable_tbl; |
| pcr->sd_pull_ctl_disable_tbl = |
| rtl8411b_qfn48_sd_pull_ctl_disable_tbl; |
| pcr->ms_pull_ctl_enable_tbl = |
| rtl8411b_qfn48_ms_pull_ctl_enable_tbl; |
| pcr->ms_pull_ctl_disable_tbl = |
| rtl8411b_qfn48_ms_pull_ctl_disable_tbl; |
| } else { |
| pcr->sd_pull_ctl_enable_tbl = |
| rtl8411b_qfn64_sd_pull_ctl_enable_tbl; |
| pcr->sd_pull_ctl_disable_tbl = |
| rtl8411b_qfn64_sd_pull_ctl_disable_tbl; |
| pcr->ms_pull_ctl_enable_tbl = |
| rtl8411b_qfn64_ms_pull_ctl_enable_tbl; |
| pcr->ms_pull_ctl_disable_tbl = |
| rtl8411b_qfn64_ms_pull_ctl_disable_tbl; |
| } |
| } |