| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Shirley Her (SC) | 1258 | 37.62% | 3 | 15.00% |
| Adam Lee | 1124 | 33.61% | 1 | 5.00% |
| ernest.zhang | 571 | 17.08% | 6 | 30.00% |
| Peter Guo | 226 | 6.76% | 1 | 5.00% |
| Adrian Hunter | 122 | 3.65% | 3 | 15.00% |
| Raul E Rangel | 31 | 0.93% | 2 | 10.00% |
| Daniel Drake | 5 | 0.15% | 1 | 5.00% |
| Zou Wei | 4 | 0.12% | 1 | 5.00% |
| Thomas Gleixner | 2 | 0.06% | 1 | 5.00% |
| Ben Hutchings | 1 | 0.03% | 1 | 5.00% |
| Total | 3344 | 20 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 BayHub Technology Ltd. * * Authors: Peter Guo <peter.guo@bayhubtech.com> * Adam Lee <adam.lee@canonical.com> * Ernest Zhang <ernest.zhang@bayhubtech.com> */ #include <linux/pci.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/delay.h> #include <linux/iopoll.h> #include "sdhci.h" #include "sdhci-pci.h" /* * O2Micro device registers */ #define O2_SD_MISC_REG5 0x64 #define O2_SD_LD0_CTRL 0x68 #define O2_SD_DEV_CTRL 0x88 #define O2_SD_LOCK_WP 0xD3 #define O2_SD_TEST_REG 0xD4 #define O2_SD_FUNC_REG0 0xDC #define O2_SD_MULTI_VCC3V 0xEE #define O2_SD_CLKREQ 0xEC #define O2_SD_CAPS 0xE0 #define O2_SD_ADMA1 0xE2 #define O2_SD_ADMA2 0xE7 #define O2_SD_INF_MOD 0xF1 #define O2_SD_MISC_CTRL4 0xFC #define O2_SD_TUNING_CTRL 0x300 #define O2_SD_PLL_SETTING 0x304 #define O2_SD_MISC_SETTING 0x308 #define O2_SD_CLK_SETTING 0x328 #define O2_SD_CAP_REG2 0x330 #define O2_SD_CAP_REG0 0x334 #define O2_SD_UHS1_CAP_SETTING 0x33C #define O2_SD_DELAY_CTRL 0x350 #define O2_SD_UHS2_L1_CTRL 0x35C #define O2_SD_FUNC_REG3 0x3E0 #define O2_SD_FUNC_REG4 0x3E4 #define O2_SD_LED_ENABLE BIT(6) #define O2_SD_FREG0_LEDOFF BIT(13) #define O2_SD_FREG4_ENABLE_CLK_SET BIT(22) #define O2_SD_VENDOR_SETTING 0x110 #define O2_SD_VENDOR_SETTING2 0x1C8 #define O2_SD_HW_TUNING_DISABLE BIT(4) #define O2_PLL_DLL_WDT_CONTROL1 0x1CC #define O2_PLL_FORCE_ACTIVE BIT(18) #define O2_PLL_LOCK_STATUS BIT(14) #define O2_PLL_SOFT_RESET BIT(12) #define O2_DLL_LOCK_STATUS BIT(11) #define O2_SD_DETECT_SETTING 0x324 static const u32 dmdn_table[] = {0x2B1C0000, 0x2C1A0000, 0x371B0000, 0x35100000}; #define DMDN_SZ ARRAY_SIZE(dmdn_table) struct o2_host { u8 dll_adjust_count; }; static void sdhci_o2_wait_card_detect_stable(struct sdhci_host *host) { ktime_t timeout; u32 scratch32; /* Wait max 50 ms */ timeout = ktime_add_ms(ktime_get(), 50); while (1) { bool timedout = ktime_after(ktime_get(), timeout); scratch32 = sdhci_readl(host, SDHCI_PRESENT_STATE); if ((scratch32 & SDHCI_CARD_PRESENT) >> SDHCI_CARD_PRES_SHIFT == (scratch32 & SDHCI_CD_LVL) >> SDHCI_CD_LVL_SHIFT) break; if (timedout) { pr_err("%s: Card Detect debounce never finished.\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); return; } udelay(10); } } static void sdhci_o2_enable_internal_clock(struct sdhci_host *host) { ktime_t timeout; u16 scratch; u32 scratch32; /* PLL software reset */ scratch32 = sdhci_readl(host, O2_PLL_DLL_WDT_CONTROL1); scratch32 |= O2_PLL_SOFT_RESET; sdhci_writel(host, scratch32, O2_PLL_DLL_WDT_CONTROL1); udelay(1); scratch32 &= ~(O2_PLL_SOFT_RESET); sdhci_writel(host, scratch32, O2_PLL_DLL_WDT_CONTROL1); /* PLL force active */ scratch32 |= O2_PLL_FORCE_ACTIVE; sdhci_writel(host, scratch32, O2_PLL_DLL_WDT_CONTROL1); /* Wait max 20 ms */ timeout = ktime_add_ms(ktime_get(), 20); while (1) { bool timedout = ktime_after(ktime_get(), timeout); scratch = sdhci_readw(host, O2_PLL_DLL_WDT_CONTROL1); if (scratch & O2_PLL_LOCK_STATUS) break; if (timedout) { pr_err("%s: Internal clock never stabilised.\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); goto out; } udelay(10); } /* Wait for card detect finish */ udelay(1); sdhci_o2_wait_card_detect_stable(host); out: /* Cancel PLL force active */ scratch32 = sdhci_readl(host, O2_PLL_DLL_WDT_CONTROL1); scratch32 &= ~O2_PLL_FORCE_ACTIVE; sdhci_writel(host, scratch32, O2_PLL_DLL_WDT_CONTROL1); } static int sdhci_o2_get_cd(struct mmc_host *mmc) { struct sdhci_host *host = mmc_priv(mmc); if (!(sdhci_readw(host, O2_PLL_DLL_WDT_CONTROL1) & O2_PLL_LOCK_STATUS)) sdhci_o2_enable_internal_clock(host); return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); } static void o2_pci_set_baseclk(struct sdhci_pci_chip *chip, u32 value) { u32 scratch_32; pci_read_config_dword(chip->pdev, O2_SD_PLL_SETTING, &scratch_32); scratch_32 &= 0x0000FFFF; scratch_32 |= value; pci_write_config_dword(chip->pdev, O2_SD_PLL_SETTING, scratch_32); } static u32 sdhci_o2_pll_dll_wdt_control(struct sdhci_host *host) { return sdhci_readl(host, O2_PLL_DLL_WDT_CONTROL1); } /* * This function is used to detect dll lock status. * Since the dll lock status bit will toggle randomly * with very short interval which needs to be polled * as fast as possible. Set sleep_us as 1 microsecond. */ static int sdhci_o2_wait_dll_detect_lock(struct sdhci_host *host) { u32 scratch32 = 0; return readx_poll_timeout(sdhci_o2_pll_dll_wdt_control, host, scratch32, !(scratch32 & O2_DLL_LOCK_STATUS), 1, 1000000); } static void sdhci_o2_set_tuning_mode(struct sdhci_host *host) { u16 reg; /* enable hardware tuning */ reg = sdhci_readw(host, O2_SD_VENDOR_SETTING); reg &= ~O2_SD_HW_TUNING_DISABLE; sdhci_writew(host, reg, O2_SD_VENDOR_SETTING); } static void __sdhci_o2_execute_tuning(struct sdhci_host *host, u32 opcode) { int i; sdhci_send_tuning(host, MMC_SEND_TUNING_BLOCK_HS200); for (i = 0; i < 150; i++) { u16 ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) { if (ctrl & SDHCI_CTRL_TUNED_CLK) { host->tuning_done = true; return; } pr_warn("%s: HW tuning failed !\n", mmc_hostname(host->mmc)); break; } mdelay(1); } pr_info("%s: Tuning failed, falling back to fixed sampling clock\n", mmc_hostname(host->mmc)); sdhci_reset_tuning(host); } /* * This function is used to fix o2 dll shift issue. * It isn't necessary to detect card present before recovery. * Firstly, it is used by bht emmc card, which is embedded. * Second, before call recovery card present will be detected * outside of the execute tuning function. */ static int sdhci_o2_dll_recovery(struct sdhci_host *host) { int ret = 0; u8 scratch_8 = 0; u32 scratch_32 = 0; struct sdhci_pci_slot *slot = sdhci_priv(host); struct sdhci_pci_chip *chip = slot->chip; struct o2_host *o2_host = sdhci_pci_priv(slot); /* UnLock WP */ pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch_8); scratch_8 &= 0x7f; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch_8); while (o2_host->dll_adjust_count < DMDN_SZ && !ret) { /* Disable clock */ sdhci_writeb(host, 0, SDHCI_CLOCK_CONTROL); /* PLL software reset */ scratch_32 = sdhci_readl(host, O2_PLL_DLL_WDT_CONTROL1); scratch_32 |= O2_PLL_SOFT_RESET; sdhci_writel(host, scratch_32, O2_PLL_DLL_WDT_CONTROL1); pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG4, &scratch_32); /* Enable Base Clk setting change */ scratch_32 |= O2_SD_FREG4_ENABLE_CLK_SET; pci_write_config_dword(chip->pdev, O2_SD_FUNC_REG4, scratch_32); o2_pci_set_baseclk(chip, dmdn_table[o2_host->dll_adjust_count]); /* Enable internal clock */ scratch_8 = SDHCI_CLOCK_INT_EN; sdhci_writeb(host, scratch_8, SDHCI_CLOCK_CONTROL); if (sdhci_o2_get_cd(host->mmc)) { /* * need wait at least 5ms for dll status stable, * after enable internal clock */ usleep_range(5000, 6000); if (sdhci_o2_wait_dll_detect_lock(host)) { scratch_8 |= SDHCI_CLOCK_CARD_EN; sdhci_writeb(host, scratch_8, SDHCI_CLOCK_CONTROL); ret = 1; } else { pr_warn("%s: DLL unlocked when dll_adjust_count is %d.\n", mmc_hostname(host->mmc), o2_host->dll_adjust_count); } } else { pr_err("%s: card present detect failed.\n", mmc_hostname(host->mmc)); break; } o2_host->dll_adjust_count++; } if (!ret && o2_host->dll_adjust_count == DMDN_SZ) pr_err("%s: DLL adjust over max times\n", mmc_hostname(host->mmc)); /* Lock WP */ pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch_8); scratch_8 |= 0x80; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch_8); return ret; } static int sdhci_o2_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host = mmc_priv(mmc); int current_bus_width = 0; /* * This handler only implements the eMMC tuning that is specific to * this controller. Fall back to the standard method for other TIMING. */ if (host->timing != MMC_TIMING_MMC_HS200) return sdhci_execute_tuning(mmc, opcode); if (WARN_ON(opcode != MMC_SEND_TUNING_BLOCK_HS200)) return -EINVAL; /* * Judge the tuning reason, whether caused by dll shift * If cause by dll shift, should call sdhci_o2_dll_recovery */ if (!sdhci_o2_wait_dll_detect_lock(host)) if (!sdhci_o2_dll_recovery(host)) { pr_err("%s: o2 dll recovery failed\n", mmc_hostname(host->mmc)); return -EINVAL; } /* * o2 sdhci host didn't support 8bit emmc tuning */ if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) { current_bus_width = mmc->ios.bus_width; mmc->ios.bus_width = MMC_BUS_WIDTH_4; sdhci_set_bus_width(host, MMC_BUS_WIDTH_4); } sdhci_o2_set_tuning_mode(host); sdhci_start_tuning(host); __sdhci_o2_execute_tuning(host, opcode); sdhci_end_tuning(host); if (current_bus_width == MMC_BUS_WIDTH_8) { mmc->ios.bus_width = MMC_BUS_WIDTH_8; sdhci_set_bus_width(host, current_bus_width); } host->flags &= ~SDHCI_HS400_TUNING; return 0; } static void o2_pci_led_enable(struct sdhci_pci_chip *chip) { int ret; u32 scratch_32; /* Set led of SD host function enable */ ret = pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG0, &scratch_32); if (ret) return; scratch_32 &= ~O2_SD_FREG0_LEDOFF; pci_write_config_dword(chip->pdev, O2_SD_FUNC_REG0, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_TEST_REG, &scratch_32); if (ret) return; scratch_32 |= O2_SD_LED_ENABLE; pci_write_config_dword(chip->pdev, O2_SD_TEST_REG, scratch_32); } static void sdhci_pci_o2_fujin2_pci_init(struct sdhci_pci_chip *chip) { u32 scratch_32; int ret; /* Improve write performance for SD3.0 */ ret = pci_read_config_dword(chip->pdev, O2_SD_DEV_CTRL, &scratch_32); if (ret) return; scratch_32 &= ~((1 << 12) | (1 << 13) | (1 << 14)); pci_write_config_dword(chip->pdev, O2_SD_DEV_CTRL, scratch_32); /* Enable Link abnormal reset generating Reset */ ret = pci_read_config_dword(chip->pdev, O2_SD_MISC_REG5, &scratch_32); if (ret) return; scratch_32 &= ~((1 << 19) | (1 << 11)); scratch_32 |= (1 << 10); pci_write_config_dword(chip->pdev, O2_SD_MISC_REG5, scratch_32); /* set card power over current protection */ ret = pci_read_config_dword(chip->pdev, O2_SD_TEST_REG, &scratch_32); if (ret) return; scratch_32 |= (1 << 4); pci_write_config_dword(chip->pdev, O2_SD_TEST_REG, scratch_32); /* adjust the output delay for SD mode */ pci_write_config_dword(chip->pdev, O2_SD_DELAY_CTRL, 0x00002492); /* Set the output voltage setting of Aux 1.2v LDO */ ret = pci_read_config_dword(chip->pdev, O2_SD_LD0_CTRL, &scratch_32); if (ret) return; scratch_32 &= ~(3 << 12); pci_write_config_dword(chip->pdev, O2_SD_LD0_CTRL, scratch_32); /* Set Max power supply capability of SD host */ ret = pci_read_config_dword(chip->pdev, O2_SD_CAP_REG0, &scratch_32); if (ret) return; scratch_32 &= ~(0x01FE); scratch_32 |= 0x00CC; pci_write_config_dword(chip->pdev, O2_SD_CAP_REG0, scratch_32); /* Set DLL Tuning Window */ ret = pci_read_config_dword(chip->pdev, O2_SD_TUNING_CTRL, &scratch_32); if (ret) return; scratch_32 &= ~(0x000000FF); scratch_32 |= 0x00000066; pci_write_config_dword(chip->pdev, O2_SD_TUNING_CTRL, scratch_32); /* Set UHS2 T_EIDLE */ ret = pci_read_config_dword(chip->pdev, O2_SD_UHS2_L1_CTRL, &scratch_32); if (ret) return; scratch_32 &= ~(0x000000FC); scratch_32 |= 0x00000084; pci_write_config_dword(chip->pdev, O2_SD_UHS2_L1_CTRL, scratch_32); /* Set UHS2 Termination */ ret = pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG3, &scratch_32); if (ret) return; scratch_32 &= ~((1 << 21) | (1 << 30)); pci_write_config_dword(chip->pdev, O2_SD_FUNC_REG3, scratch_32); /* Set L1 Entrance Timer */ ret = pci_read_config_dword(chip->pdev, O2_SD_CAPS, &scratch_32); if (ret) return; scratch_32 &= ~(0xf0000000); scratch_32 |= 0x30000000; pci_write_config_dword(chip->pdev, O2_SD_CAPS, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_MISC_CTRL4, &scratch_32); if (ret) return; scratch_32 &= ~(0x000f0000); scratch_32 |= 0x00080000; pci_write_config_dword(chip->pdev, O2_SD_MISC_CTRL4, scratch_32); } static void sdhci_pci_o2_enable_msi(struct sdhci_pci_chip *chip, struct sdhci_host *host) { int ret; ret = pci_find_capability(chip->pdev, PCI_CAP_ID_MSI); if (!ret) { pr_info("%s: unsupport msi, use INTx irq\n", mmc_hostname(host->mmc)); return; } ret = pci_alloc_irq_vectors(chip->pdev, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX); if (ret < 0) { pr_err("%s: enable PCI MSI failed, err=%d\n", mmc_hostname(host->mmc), ret); return; } host->irq = pci_irq_vector(chip->pdev, 0); } static void sdhci_o2_enable_clk(struct sdhci_host *host, u16 clk) { /* Enable internal clock */ clk |= SDHCI_CLOCK_INT_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); sdhci_o2_enable_internal_clock(host); if (sdhci_o2_get_cd(host->mmc)) { clk |= SDHCI_CLOCK_CARD_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); } } static void sdhci_pci_o2_set_clock(struct sdhci_host *host, unsigned int clock) { u16 clk; host->mmc->actual_clock = 0; sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); if (clock == 0) return; clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock); sdhci_o2_enable_clk(host, clk); } static int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot) { struct sdhci_pci_chip *chip; struct sdhci_host *host; struct o2_host *o2_host = sdhci_pci_priv(slot); u32 reg, caps; int ret; chip = slot->chip; host = slot->host; o2_host->dll_adjust_count = 0; caps = sdhci_readl(host, SDHCI_CAPABILITIES); /* * mmc_select_bus_width() will test the bus to determine the actual bus * width. */ if (caps & SDHCI_CAN_DO_8BIT) host->mmc->caps |= MMC_CAP_8_BIT_DATA; switch (chip->pdev->device) { case PCI_DEVICE_ID_O2_SDS0: case PCI_DEVICE_ID_O2_SEABIRD0: case PCI_DEVICE_ID_O2_SEABIRD1: case PCI_DEVICE_ID_O2_SDS1: case PCI_DEVICE_ID_O2_FUJIN2: reg = sdhci_readl(host, O2_SD_VENDOR_SETTING); if (reg & 0x1) host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; sdhci_pci_o2_enable_msi(chip, host); if (chip->pdev->device == PCI_DEVICE_ID_O2_SEABIRD0) { ret = pci_read_config_dword(chip->pdev, O2_SD_MISC_SETTING, ®); if (ret) return -EIO; if (reg & (1 << 4)) { pr_info("%s: emmc 1.8v flag is set, force 1.8v signaling voltage\n", mmc_hostname(host->mmc)); host->flags &= ~SDHCI_SIGNALING_330; host->flags |= SDHCI_SIGNALING_180; host->mmc->caps2 |= MMC_CAP2_NO_SD; host->mmc->caps2 |= MMC_CAP2_NO_SDIO; pci_write_config_dword(chip->pdev, O2_SD_DETECT_SETTING, 3); } slot->host->mmc_host_ops.get_cd = sdhci_o2_get_cd; } host->mmc_host_ops.execute_tuning = sdhci_o2_execute_tuning; if (chip->pdev->device != PCI_DEVICE_ID_O2_FUJIN2) break; /* set dll watch dog timer */ reg = sdhci_readl(host, O2_SD_VENDOR_SETTING2); reg |= (1 << 12); sdhci_writel(host, reg, O2_SD_VENDOR_SETTING2); break; default: break; } return 0; } static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip) { int ret; u8 scratch; u32 scratch_32; switch (chip->pdev->device) { case PCI_DEVICE_ID_O2_8220: case PCI_DEVICE_ID_O2_8221: case PCI_DEVICE_ID_O2_8320: case PCI_DEVICE_ID_O2_8321: /* This extra setup is required due to broken ADMA. */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch &= 0x7f; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); /* Set Multi 3 to VCC3V# */ pci_write_config_byte(chip->pdev, O2_SD_MULTI_VCC3V, 0x08); /* Disable CLK_REQ# support after media DET */ ret = pci_read_config_byte(chip->pdev, O2_SD_CLKREQ, &scratch); if (ret) return ret; scratch |= 0x20; pci_write_config_byte(chip->pdev, O2_SD_CLKREQ, scratch); /* Choose capabilities, enable SDMA. We have to write 0x01 * to the capabilities register first to unlock it. */ ret = pci_read_config_byte(chip->pdev, O2_SD_CAPS, &scratch); if (ret) return ret; scratch |= 0x01; pci_write_config_byte(chip->pdev, O2_SD_CAPS, scratch); pci_write_config_byte(chip->pdev, O2_SD_CAPS, 0x73); /* Disable ADMA1/2 */ pci_write_config_byte(chip->pdev, O2_SD_ADMA1, 0x39); pci_write_config_byte(chip->pdev, O2_SD_ADMA2, 0x08); /* Disable the infinite transfer mode */ ret = pci_read_config_byte(chip->pdev, O2_SD_INF_MOD, &scratch); if (ret) return ret; scratch |= 0x08; pci_write_config_byte(chip->pdev, O2_SD_INF_MOD, scratch); /* Lock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch |= 0x80; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); break; case PCI_DEVICE_ID_O2_SDS0: case PCI_DEVICE_ID_O2_SDS1: case PCI_DEVICE_ID_O2_FUJIN2: /* UnLock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch &= 0x7f; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); /* DevId=8520 subId= 0x11 or 0x12 Type Chip support */ if (chip->pdev->device == PCI_DEVICE_ID_O2_FUJIN2) { ret = pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG0, &scratch_32); scratch_32 = ((scratch_32 & 0xFF000000) >> 24); /* Check Whether subId is 0x11 or 0x12 */ if ((scratch_32 == 0x11) || (scratch_32 == 0x12)) { scratch_32 = 0x25100000; o2_pci_set_baseclk(chip, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG4, &scratch_32); /* Enable Base Clk setting change */ scratch_32 |= O2_SD_FREG4_ENABLE_CLK_SET; pci_write_config_dword(chip->pdev, O2_SD_FUNC_REG4, scratch_32); /* Set Tuning Window to 4 */ pci_write_config_byte(chip->pdev, O2_SD_TUNING_CTRL, 0x44); break; } } /* Enable 8520 led function */ o2_pci_led_enable(chip); /* Set timeout CLK */ ret = pci_read_config_dword(chip->pdev, O2_SD_CLK_SETTING, &scratch_32); if (ret) return ret; scratch_32 &= ~(0xFF00); scratch_32 |= 0x07E0C800; pci_write_config_dword(chip->pdev, O2_SD_CLK_SETTING, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_CLKREQ, &scratch_32); if (ret) return ret; scratch_32 |= 0x3; pci_write_config_dword(chip->pdev, O2_SD_CLKREQ, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_PLL_SETTING, &scratch_32); if (ret) return ret; scratch_32 &= ~(0x1F3F070E); scratch_32 |= 0x18270106; pci_write_config_dword(chip->pdev, O2_SD_PLL_SETTING, scratch_32); /* Disable UHS1 funciton */ ret = pci_read_config_dword(chip->pdev, O2_SD_CAP_REG2, &scratch_32); if (ret) return ret; scratch_32 &= ~(0xE0); pci_write_config_dword(chip->pdev, O2_SD_CAP_REG2, scratch_32); if (chip->pdev->device == PCI_DEVICE_ID_O2_FUJIN2) sdhci_pci_o2_fujin2_pci_init(chip); /* Lock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch |= 0x80; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); break; case PCI_DEVICE_ID_O2_SEABIRD0: case PCI_DEVICE_ID_O2_SEABIRD1: /* UnLock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch &= 0x7f; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); ret = pci_read_config_dword(chip->pdev, O2_SD_PLL_SETTING, &scratch_32); if ((scratch_32 & 0xff000000) == 0x01000000) { scratch_32 &= 0x0000FFFF; scratch_32 |= 0x1F340000; pci_write_config_dword(chip->pdev, O2_SD_PLL_SETTING, scratch_32); } else { scratch_32 &= 0x0000FFFF; scratch_32 |= 0x25100000; pci_write_config_dword(chip->pdev, O2_SD_PLL_SETTING, scratch_32); ret = pci_read_config_dword(chip->pdev, O2_SD_FUNC_REG4, &scratch_32); scratch_32 |= (1 << 22); pci_write_config_dword(chip->pdev, O2_SD_FUNC_REG4, scratch_32); } /* Set Tuning Windows to 5 */ pci_write_config_byte(chip->pdev, O2_SD_TUNING_CTRL, 0x55); /* Lock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); if (ret) return ret; scratch |= 0x80; pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch); break; } return 0; } #ifdef CONFIG_PM_SLEEP static int sdhci_pci_o2_resume(struct sdhci_pci_chip *chip) { sdhci_pci_o2_probe(chip); return sdhci_pci_resume_host(chip); } #endif static const struct sdhci_ops sdhci_pci_o2_ops = { .set_clock = sdhci_pci_o2_set_clock, .enable_dma = sdhci_pci_enable_dma, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, }; const struct sdhci_pci_fixes sdhci_o2 = { .probe = sdhci_pci_o2_probe, .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD, .probe_slot = sdhci_pci_o2_probe_slot, #ifdef CONFIG_PM_SLEEP .resume = sdhci_pci_o2_resume, #endif .ops = &sdhci_pci_o2_ops, .priv_size = sizeof(struct o2_host), };
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