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- // SPDX-License-Identifier: GPL-2.0-or-later
- /* Driver for Realtek PCI-Express card reader
- *
- * Copyright(c) 2018-2019 Realtek Semiconductor Corp. All rights reserved.
- *
- * Author:
- * Ricky WU <[email protected]>
- * Rui FENG <[email protected]>
- * Wei WANG <[email protected]>
- */
- #include <linux/module.h>
- #include <linux/delay.h>
- #include <linux/rtsx_pci.h>
- #include "rts5228.h"
- #include "rtsx_pcr.h"
- static u8 rts5228_get_ic_version(struct rtsx_pcr *pcr)
- {
- u8 val;
- rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
- return val & IC_VERSION_MASK;
- }
- static void rts5228_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},
- {0xB5, 0xB5, 0xB5},
- {0xE6, 0x7E, 0xFE},
- {0x6B, 0x6B, 0x6B},
- };
- 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 rtsx5228_fetch_vendor_settings(struct rtsx_pcr *pcr)
- {
- struct pci_dev *pdev = pcr->pci;
- u32 reg;
- /* 0x724~0x727 */
- pci_read_config_dword(pdev, PCR_SETTING_REG1, ®);
- pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
- if (!rtsx_vendor_setting_valid(reg)) {
- pcr_dbg(pcr, "skip fetch vendor setting\n");
- return;
- }
- pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
- pcr->aspm_en = rtsx_reg_to_aspm(reg);
- /* 0x814~0x817 */
- pci_read_config_dword(pdev, PCR_SETTING_REG2, ®);
- pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
- pcr->rtd3_en = rtsx_reg_to_rtd3(reg);
- if (rtsx_check_mmc_support(reg))
- pcr->extra_caps |= EXTRA_CAPS_NO_MMC;
- 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 int rts5228_optimize_phy(struct rtsx_pcr *pcr)
- {
- return rtsx_pci_write_phy_register(pcr, 0x07, 0x8F40);
- }
- static void rts5228_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);
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
- D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);
- if (!runtime) {
- rtsx_pci_write_register(pcr, RTS5228_AUTOLOAD_CFG1,
- CD_RESUME_EN_MASK, 0);
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
- rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
- FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
- }
- rtsx_pci_write_register(pcr, FPDCTL,
- SSC_POWER_DOWN, SSC_POWER_DOWN);
- }
- static int rts5228_enable_auto_blink(struct rtsx_pcr *pcr)
- {
- return rtsx_pci_write_register(pcr, OLT_LED_CTL,
- LED_SHINE_MASK, LED_SHINE_EN);
- }
- static int rts5228_disable_auto_blink(struct rtsx_pcr *pcr)
- {
- return rtsx_pci_write_register(pcr, OLT_LED_CTL,
- LED_SHINE_MASK, LED_SHINE_DISABLE);
- }
- static int rts5228_turn_on_led(struct rtsx_pcr *pcr)
- {
- return rtsx_pci_write_register(pcr, GPIO_CTL,
- 0x02, 0x02);
- }
- static int rts5228_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 rts5228_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 rts5228_sd_pull_ctl_disable_tbl[] = {
- RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
- RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
- 0,
- };
- static int rts5228_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 rts5228_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, RTS5228_LDO1_CFG1,
- RTS5228_LDO1_TUNE_MASK, RTS5228_LDO1_33);
- rtsx_pci_write_register(pcr, RTS5228_LDO1233318_POW_CTL,
- RTS5228_LDO1_POWERON_MASK, RTS5228_LDO1_SOFTSTART);
- mdelay(2);
- rtsx_pci_write_register(pcr, RTS5228_LDO1233318_POW_CTL,
- RTS5228_LDO1_POWERON_MASK, RTS5228_LDO1_FULLON);
- rtsx_pci_write_register(pcr, RTS5228_LDO1233318_POW_CTL,
- RTS5228_LDO3318_POWERON, RTS5228_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)
- rts5228_sd_set_sample_push_timing_sd30(pcr);
- return 0;
- }
- static int rts5228_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
- {
- int err;
- u16 val = 0;
- rtsx_pci_write_register(pcr, RTS5228_CARD_PWR_CTL,
- RTS5228_PUPDC, RTS5228_PUPDC);
- switch (voltage) {
- case OUTPUT_3V3:
- rtsx_pci_read_phy_register(pcr, PHY_TUNE, &val);
- val |= PHY_TUNE_SDBUS_33;
- err = rtsx_pci_write_phy_register(pcr, PHY_TUNE, val);
- if (err < 0)
- return err;
- rtsx_pci_write_register(pcr, RTS5228_DV3318_CFG,
- RTS5228_DV3318_TUNE_MASK, RTS5228_DV3318_33);
- rtsx_pci_write_register(pcr, SD_PAD_CTL,
- SD_IO_USING_1V8, 0);
- break;
- case OUTPUT_1V8:
- rtsx_pci_read_phy_register(pcr, PHY_TUNE, &val);
- val &= ~PHY_TUNE_SDBUS_33;
- err = rtsx_pci_write_phy_register(pcr, PHY_TUNE, val);
- if (err < 0)
- return err;
- rtsx_pci_write_register(pcr, RTS5228_DV3318_CFG,
- RTS5228_DV3318_TUNE_MASK, RTS5228_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 */
- rts5228_fill_driving(pcr, voltage);
- return 0;
- }
- static void rts5228_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, RTS5260_DMA_RST_CTL_0,
- RTS5260_DMA_RST | RTS5260_ADMA3_RST,
- RTS5260_DMA_RST | RTS5260_ADMA3_RST);
- rtsx_pci_write_register(pcr, RBCTL, RB_FLUSH, RB_FLUSH);
- }
- static void rts5228_card_before_power_off(struct rtsx_pcr *pcr)
- {
- rts5228_stop_cmd(pcr);
- rts5228_switch_output_voltage(pcr, OUTPUT_3V3);
- }
- static void rts5228_enable_ocp(struct rtsx_pcr *pcr)
- {
- u8 val = 0;
- val = SD_OCP_INT_EN | SD_DETECT_EN;
- rtsx_pci_write_register(pcr, REG_OCPCTL, 0xFF, val);
- rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN);
- }
- static void rts5228_disable_ocp(struct rtsx_pcr *pcr)
- {
- u8 mask = 0;
- mask = SD_OCP_INT_EN | SD_DETECT_EN;
- rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
- rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN, 0);
- }
- static int rts5228_card_power_off(struct rtsx_pcr *pcr, int card)
- {
- int err = 0;
- rts5228_card_before_power_off(pcr);
- err = rtsx_pci_write_register(pcr, RTS5228_LDO1233318_POW_CTL,
- RTS5228_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 rts5228_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, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN);
- rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_THD_MASK, option->sd_800mA_ocp_thd);
- rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_LMT_THD_MASK,
- RTS5228_LDO1_LMT_THD_1500);
- rtsx_pci_read_register(pcr, RTS5228_LDO1_CFG0, &val);
- mask = SD_OCP_GLITCH_MASK;
- val = pcr->hw_param.ocp_glitch;
- rtsx_pci_write_register(pcr, REG_OCPGLITCH, mask, val);
- rts5228_enable_ocp(pcr);
- } else {
- rtsx_pci_write_register(pcr, RTS5228_LDO1_CFG0,
- RTS5228_LDO1_OCP_EN | RTS5228_LDO1_OCP_LMT_EN, 0);
- }
- }
- static void rts5228_clear_ocpstat(struct rtsx_pcr *pcr)
- {
- u8 mask = 0;
- u8 val = 0;
- mask = SD_OCP_INT_CLR | SD_OC_CLR;
- val = SD_OCP_INT_CLR | SD_OC_CLR;
- rtsx_pci_write_register(pcr, REG_OCPCTL, mask, val);
- udelay(1000);
- rtsx_pci_write_register(pcr, REG_OCPCTL, mask, 0);
- }
- static void rts5228_process_ocp(struct rtsx_pcr *pcr)
- {
- if (!pcr->option.ocp_en)
- return;
- rtsx_pci_get_ocpstat(pcr, &pcr->ocp_stat);
- if (pcr->ocp_stat & (SD_OC_NOW | SD_OC_EVER)) {
- rts5228_clear_ocpstat(pcr);
- rts5228_card_power_off(pcr, RTSX_SD_CARD);
- rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0);
- pcr->ocp_stat = 0;
- }
- }
- static void rts5228_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 rts5228_extra_init_hw(struct rtsx_pcr *pcr)
- {
- struct rtsx_cr_option *option = &pcr->option;
- rtsx_pci_write_register(pcr, RTS5228_AUTOLOAD_CFG1,
- CD_RESUME_EN_MASK, CD_RESUME_EN_MASK);
- rts5228_init_from_cfg(pcr);
- 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, FUNC_FORCE_CTL,
- FUNC_FORCE_UPME_XMT_DBG, FUNC_FORCE_UPME_XMT_DBG);
- rtsx_pci_write_register(pcr, PCLK_CTL,
- PCLK_MODE_SEL, PCLK_MODE_SEL);
- rtsx_pci_write_register(pcr, PM_EVENT_DEBUG, PME_DEBUG_0, PME_DEBUG_0);
- rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, CLK_PM_EN, CLK_PM_EN);
- /* LED shine disabled, set initial shine cycle period */
- rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x0F, 0x02);
- /* Configure driving */
- rts5228_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, 0x30, 0x00);
- /*
- * 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, 0xFB);
- if (pcr->rtd3_en) {
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x01);
- rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
- FORCE_PM_CONTROL | FORCE_PM_VALUE,
- FORCE_PM_CONTROL | FORCE_PM_VALUE);
- } else {
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
- rtsx_pci_write_register(pcr, RTS5228_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);
- return 0;
- }
- static void rts5228_enable_aspm(struct rtsx_pcr *pcr, bool enable)
- {
- u8 mask, val;
- if (pcr->aspm_enabled == enable)
- return;
- mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
- val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
- 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 rts5228_disable_aspm(struct rtsx_pcr *pcr, bool enable)
- {
- u8 mask, val;
- if (pcr->aspm_enabled == enable)
- return;
- pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
- PCI_EXP_LNKCTL_ASPMC, 0);
- mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
- val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
- rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
- rtsx_pci_write_register(pcr, SD_CFG1, SD_ASYNC_FIFO_NOT_RST, 0);
- mdelay(10);
- pcr->aspm_enabled = enable;
- }
- static void rts5228_set_aspm(struct rtsx_pcr *pcr, bool enable)
- {
- if (enable)
- rts5228_enable_aspm(pcr, true);
- else
- rts5228_disable_aspm(pcr, false);
- }
- static void rts5228_set_l1off_cfg_sub_d0(struct rtsx_pcr *pcr, int active)
- {
- struct rtsx_cr_option *option = &pcr->option;
- 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;
- }
- rtsx_set_l1off_sub(pcr, val);
- }
- static const struct pcr_ops rts5228_pcr_ops = {
- .fetch_vendor_settings = rtsx5228_fetch_vendor_settings,
- .turn_on_led = rts5228_turn_on_led,
- .turn_off_led = rts5228_turn_off_led,
- .extra_init_hw = rts5228_extra_init_hw,
- .enable_auto_blink = rts5228_enable_auto_blink,
- .disable_auto_blink = rts5228_disable_auto_blink,
- .card_power_on = rts5228_card_power_on,
- .card_power_off = rts5228_card_power_off,
- .switch_output_voltage = rts5228_switch_output_voltage,
- .force_power_down = rts5228_force_power_down,
- .stop_cmd = rts5228_stop_cmd,
- .set_aspm = rts5228_set_aspm,
- .set_l1off_cfg_sub_d0 = rts5228_set_l1off_cfg_sub_d0,
- .enable_ocp = rts5228_enable_ocp,
- .disable_ocp = rts5228_disable_ocp,
- .init_ocp = rts5228_init_ocp,
- .process_ocp = rts5228_process_ocp,
- .clear_ocpstat = rts5228_clear_ocpstat,
- .optimize_phy = rts5228_optimize_phy,
- };
- static inline u8 double_ssc_depth(u8 depth)
- {
- return ((depth > 1) ? (depth - 1) : depth);
- }
- int rts5228_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] = RTS5228_SSC_DEPTH_4M,
- [RTSX_SSC_DEPTH_2M] = RTS5228_SSC_DEPTH_2M,
- [RTSX_SSC_DEPTH_1M] = RTS5228_SSC_DEPTH_1M,
- [RTSX_SSC_DEPTH_500K] = RTS5228_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 = RTS5228_SSC_DEPTH_8M;
- } else if (div == CLK_DIV_4) {
- if (ssc_depth > 2)
- ssc_depth -= 2;
- else
- ssc_depth = RTS5228_SSC_DEPTH_8M;
- } else if (div == CLK_DIV_8) {
- if (ssc_depth > 3)
- ssc_depth -= 3;
- else
- ssc_depth = RTS5228_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,
- CLK_LOW_FREQ, CLK_LOW_FREQ);
- 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);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
- 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, CLK_LOW_FREQ, 0);
- if (err < 0)
- return err;
- pcr->cur_clock = clk;
- return 0;
- }
- void rts5228_init_params(struct rtsx_pcr *pcr)
- {
- struct rtsx_cr_option *option = &pcr->option;
- struct rtsx_hw_param *hw_param = &pcr->hw_param;
- pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
- pcr->num_slots = 1;
- pcr->ops = &rts5228_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->aspm_mode = ASPM_MODE_REG;
- pcr->tx_initial_phase = SET_CLOCK_PHASE(28, 27, 11);
- pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
- pcr->ic_version = rts5228_get_ic_version(pcr);
- pcr->sd_pull_ctl_enable_tbl = rts5228_sd_pull_ctl_enable_tbl;
- pcr->sd_pull_ctl_disable_tbl = rts5228_sd_pull_ctl_disable_tbl;
- pcr->reg_pm_ctrl3 = RTS5228_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;
- hw_param->ocp_glitch = SD_OCP_GLITCH_800U;
- option->sd_800mA_ocp_thd = RTS5228_LDO1_OCP_THD_930;
- }
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