/* * Copyright (C) 2013 BayHub Technology Ltd. * * Authors: Peter Guo <peter.guo@bayhubtech.com> * Adam Lee <adam.lee@canonical.com> * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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. * */ #include <linux/pci.h> #include "sdhci.h" #include "sdhci-pci.h" #include "sdhci-pci-o2micro.h" 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 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); } 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); } EXPORT_SYMBOL_GPL(sdhci_pci_o2_fujin2_pci_init); int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot) { struct sdhci_pci_chip *chip; struct sdhci_host *host; u32 reg; chip = slot->chip; host = slot->host; 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; 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; } EXPORT_SYMBOL_GPL(sdhci_pci_o2_probe_slot); 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 = 0x2c280000; /* Set Base Clock to 208MZ */ 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 |= 0x2c280000; 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; } EXPORT_SYMBOL_GPL(sdhci_pci_o2_probe); int sdhci_pci_o2_resume(struct sdhci_pci_chip *chip) { sdhci_pci_o2_probe(chip); return 0; } EXPORT_SYMBOL_GPL(sdhci_pci_o2_resume);