1 /* 2 * Copyright (C) 2016 Marvell, All Rights Reserved. 3 * 4 * Author: Hu Ziji <huziji@marvell.com> 5 * Date: 2016-8-24 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation version 2. 10 */ 11 #ifndef SDHCI_XENON_H_ 12 #define SDHCI_XENON_H_ 13 14 /* Register Offset of Xenon SDHC self-defined register */ 15 #define XENON_SYS_CFG_INFO 0x0104 16 #define XENON_SLOT_TYPE_SDIO_SHIFT 24 17 #define XENON_NR_SUPPORTED_SLOT_MASK 0x7 18 19 #define XENON_SYS_OP_CTRL 0x0108 20 #define XENON_AUTO_CLKGATE_DISABLE_MASK BIT(20) 21 #define XENON_SDCLK_IDLEOFF_ENABLE_SHIFT 8 22 #define XENON_SLOT_ENABLE_SHIFT 0 23 24 #define XENON_SYS_EXT_OP_CTRL 0x010C 25 #define XENON_MASK_CMD_CONFLICT_ERR BIT(8) 26 27 #define XENON_SLOT_OP_STATUS_CTRL 0x0128 28 #define XENON_TUN_CONSECUTIVE_TIMES_SHIFT 16 29 #define XENON_TUN_CONSECUTIVE_TIMES_MASK 0x7 30 #define XENON_TUN_CONSECUTIVE_TIMES 0x4 31 #define XENON_TUNING_STEP_SHIFT 12 32 #define XENON_TUNING_STEP_MASK 0xF 33 #define XENON_TUNING_STEP_DIVIDER BIT(6) 34 35 #define XENON_SLOT_EMMC_CTRL 0x0130 36 #define XENON_ENABLE_RESP_STROBE BIT(25) 37 #define XENON_ENABLE_DATA_STROBE BIT(24) 38 39 #define XENON_SLOT_RETUNING_REQ_CTRL 0x0144 40 /* retuning compatible */ 41 #define XENON_RETUNING_COMPATIBLE 0x1 42 43 #define XENON_SLOT_EXT_PRESENT_STATE 0x014C 44 #define XENON_DLL_LOCK_STATE 0x1 45 46 #define XENON_SLOT_DLL_CUR_DLY_VAL 0x0150 47 48 /* Tuning Parameter */ 49 #define XENON_TMR_RETUN_NO_PRESENT 0xF 50 #define XENON_DEF_TUNING_COUNT 0x9 51 52 #define XENON_DEFAULT_SDCLK_FREQ 400000 53 #define XENON_LOWEST_SDCLK_FREQ 100000 54 55 /* Xenon specific Mode Select value */ 56 #define XENON_CTRL_HS200 0x5 57 #define XENON_CTRL_HS400 0x6 58 59 struct xenon_priv { 60 unsigned char tuning_count; 61 /* idx of SDHC */ 62 u8 sdhc_id; 63 64 /* 65 * eMMC/SD/SDIO require different register settings. 66 * Xenon driver has to recognize card type 67 * before mmc_host->card is not available. 68 * This field records the card type during init. 69 * It is updated in xenon_init_card(). 70 * 71 * It is only valid during initialization after it is updated. 72 * Do not access this variable in normal transfers after 73 * initialization completes. 74 */ 75 unsigned int init_card_type; 76 77 /* 78 * The bus_width, timing, and clock fields in below 79 * record the current ios setting of Xenon SDHC. 80 * Driver will adjust PHY setting if any change to 81 * ios affects PHY timing. 82 */ 83 unsigned char bus_width; 84 unsigned char timing; 85 unsigned int clock; 86 87 int phy_type; 88 /* 89 * Contains board-specific PHY parameters 90 * passed from device tree. 91 */ 92 void *phy_params; 93 struct xenon_emmc_phy_regs *emmc_phy_regs; 94 bool restore_needed; 95 }; 96 97 int xenon_phy_adj(struct sdhci_host *host, struct mmc_ios *ios); 98 int xenon_phy_parse_dt(struct device_node *np, 99 struct sdhci_host *host); 100 void xenon_soc_pad_ctrl(struct sdhci_host *host, 101 unsigned char signal_voltage); 102 #endif 103