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262 lines
7.2 KiB
262 lines
7.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* Driver for Realtek PCI-Express card reader |
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* |
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* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. |
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* |
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* Author: |
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* Wei WANG <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/rtsx_pci.h> |
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#include "rtsx_pcr.h" |
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static u8 rts5229_get_ic_version(struct rtsx_pcr *pcr) |
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{ |
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u8 val; |
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rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val); |
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return val & 0x0F; |
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} |
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static void rts5229_fetch_vendor_settings(struct rtsx_pcr *pcr) |
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{ |
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struct pci_dev *pdev = pcr->pci; |
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u32 reg; |
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pci_read_config_dword(pdev, PCR_SETTING_REG1, ®); |
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pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg); |
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if (!rtsx_vendor_setting_valid(reg)) |
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return; |
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pcr->aspm_en = rtsx_reg_to_aspm(reg); |
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pcr->sd30_drive_sel_1v8 = |
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map_sd_drive(rtsx_reg_to_sd30_drive_sel_1v8(reg)); |
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pcr->card_drive_sel &= 0x3F; |
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pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg); |
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pci_read_config_dword(pdev, PCR_SETTING_REG2, ®); |
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pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg); |
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pcr->sd30_drive_sel_3v3 = |
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map_sd_drive(rtsx_reg_to_sd30_drive_sel_3v3(reg)); |
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} |
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static void rts5229_force_power_down(struct rtsx_pcr *pcr, u8 pm_state) |
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{ |
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rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03); |
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} |
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static int rts5229_extra_init_hw(struct rtsx_pcr *pcr) |
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{ |
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rtsx_pci_init_cmd(pcr); |
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/* Configure GPIO as output */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, GPIO_CTL, 0x02, 0x02); |
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/* Reset ASPM state to default value */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0); |
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/* Force CLKREQ# PIN to drive 0 to request clock */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0x08, 0x08); |
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/* Switch LDO3318 source from DV33 to card_3v3 */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x00); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x01); |
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/* LED shine disabled, set initial shine cycle period */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OLT_LED_CTL, 0x0F, 0x02); |
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/* Configure driving */ |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL, |
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0xFF, pcr->sd30_drive_sel_3v3); |
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return rtsx_pci_send_cmd(pcr, 100); |
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} |
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static int rts5229_optimize_phy(struct rtsx_pcr *pcr) |
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{ |
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/* Optimize RX sensitivity */ |
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return rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42); |
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} |
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static int rts5229_turn_on_led(struct rtsx_pcr *pcr) |
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{ |
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return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x02); |
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} |
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static int rts5229_turn_off_led(struct rtsx_pcr *pcr) |
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{ |
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return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x00); |
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} |
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static int rts5229_enable_auto_blink(struct rtsx_pcr *pcr) |
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{ |
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return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x08); |
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} |
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static int rts5229_disable_auto_blink(struct rtsx_pcr *pcr) |
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{ |
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return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x00); |
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} |
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static int rts5229_card_power_on(struct rtsx_pcr *pcr, int card) |
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{ |
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int err; |
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rtsx_pci_init_cmd(pcr); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, |
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SD_POWER_MASK, SD_PARTIAL_POWER_ON); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL, |
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LDO3318_PWR_MASK, 0x02); |
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err = rtsx_pci_send_cmd(pcr, 100); |
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if (err < 0) |
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return err; |
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/* To avoid too large in-rush current */ |
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udelay(150); |
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rtsx_pci_init_cmd(pcr); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, |
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SD_POWER_MASK, SD_POWER_ON); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL, |
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LDO3318_PWR_MASK, 0x06); |
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return rtsx_pci_send_cmd(pcr, 100); |
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} |
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static int rts5229_card_power_off(struct rtsx_pcr *pcr, int card) |
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{ |
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rtsx_pci_init_cmd(pcr); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, |
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SD_POWER_MASK | PMOS_STRG_MASK, |
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SD_POWER_OFF | PMOS_STRG_400mA); |
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL, |
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LDO3318_PWR_MASK, 0x00); |
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return rtsx_pci_send_cmd(pcr, 100); |
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} |
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static int rts5229_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) |
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{ |
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int err; |
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if (voltage == OUTPUT_3V3) { |
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err = rtsx_pci_write_register(pcr, |
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SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3); |
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if (err < 0) |
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return err; |
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err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24); |
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if (err < 0) |
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return err; |
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} else if (voltage == OUTPUT_1V8) { |
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err = rtsx_pci_write_register(pcr, |
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SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8); |
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if (err < 0) |
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return err; |
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err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24); |
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if (err < 0) |
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return err; |
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} else { |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static const struct pcr_ops rts5229_pcr_ops = { |
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.fetch_vendor_settings = rts5229_fetch_vendor_settings, |
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.extra_init_hw = rts5229_extra_init_hw, |
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.optimize_phy = rts5229_optimize_phy, |
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.turn_on_led = rts5229_turn_on_led, |
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.turn_off_led = rts5229_turn_off_led, |
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.enable_auto_blink = rts5229_enable_auto_blink, |
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.disable_auto_blink = rts5229_disable_auto_blink, |
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.card_power_on = rts5229_card_power_on, |
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.card_power_off = rts5229_card_power_off, |
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.switch_output_voltage = rts5229_switch_output_voltage, |
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.cd_deglitch = NULL, |
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.conv_clk_and_div_n = NULL, |
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.force_power_down = rts5229_force_power_down, |
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}; |
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/* SD Pull Control Enable: |
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* SD_DAT[3:0] ==> pull up |
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* SD_CD ==> pull up |
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* SD_WP ==> pull up |
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* SD_CMD ==> pull up |
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* SD_CLK ==> pull down |
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*/ |
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static const u32 rts5229_sd_pull_ctl_enable_tbl1[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), |
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RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9), |
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0, |
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}; |
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/* For RTS5229 version C */ |
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static const u32 rts5229_sd_pull_ctl_enable_tbl2[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA), |
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RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD9), |
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0, |
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}; |
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/* SD Pull Control Disable: |
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* SD_DAT[3:0] ==> pull down |
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* SD_CD ==> pull up |
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* SD_WP ==> pull down |
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* SD_CMD ==> pull down |
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* SD_CLK ==> pull down |
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*/ |
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static const u32 rts5229_sd_pull_ctl_disable_tbl1[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
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RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5), |
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0, |
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}; |
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/* For RTS5229 version C */ |
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static const u32 rts5229_sd_pull_ctl_disable_tbl2[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55), |
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RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE5), |
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0, |
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}; |
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/* MS Pull Control Enable: |
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* MS CD ==> pull up |
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* others ==> pull down |
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*/ |
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static const u32 rts5229_ms_pull_ctl_enable_tbl[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55), |
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RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15), |
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0, |
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}; |
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/* MS Pull Control Disable: |
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* MS CD ==> pull up |
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* others ==> pull down |
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*/ |
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static const u32 rts5229_ms_pull_ctl_disable_tbl[] = { |
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RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55), |
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RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15), |
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0, |
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}; |
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void rts5229_init_params(struct rtsx_pcr *pcr) |
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{ |
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pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104; |
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pcr->num_slots = 2; |
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pcr->ops = &rts5229_pcr_ops; |
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pcr->flags = 0; |
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pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT; |
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pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B; |
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pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D; |
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pcr->aspm_en = ASPM_L1_EN; |
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pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15); |
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pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 6, 6); |
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pcr->ic_version = rts5229_get_ic_version(pcr); |
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if (pcr->ic_version == IC_VER_C) { |
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pcr->sd_pull_ctl_enable_tbl = rts5229_sd_pull_ctl_enable_tbl2; |
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pcr->sd_pull_ctl_disable_tbl = rts5229_sd_pull_ctl_disable_tbl2; |
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} else { |
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pcr->sd_pull_ctl_enable_tbl = rts5229_sd_pull_ctl_enable_tbl1; |
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pcr->sd_pull_ctl_disable_tbl = rts5229_sd_pull_ctl_disable_tbl1; |
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} |
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pcr->ms_pull_ctl_enable_tbl = rts5229_ms_pull_ctl_enable_tbl; |
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pcr->ms_pull_ctl_disable_tbl = rts5229_ms_pull_ctl_disable_tbl; |
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}
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