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| 1 | +/* SPDX-License-Identifier: GPL-2.0 */ |
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1 | 2 | /* |
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2 | 3 | * Driver for the MMC / SD / SDIO cell found in: |
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3 | 4 | * |
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4 | 5 | * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 |
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5 | 6 | * |
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6 | | - * Copyright (C) 2015-17 Renesas Electronics Corporation |
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7 | | - * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang |
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| 7 | + * Copyright (C) 2015-19 Renesas Electronics Corporation |
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| 8 | + * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang |
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8 | 9 | * Copyright (C) 2016-17 Horms Solutions, Simon Horman |
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9 | 10 | * Copyright (C) 2007 Ian Molton |
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10 | 11 | * Copyright (C) 2004 Ian Molton |
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11 | | - * |
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12 | | - * This program is free software; you can redistribute it and/or modify |
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13 | | - * it under the terms of the GNU General Public License version 2 as |
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14 | | - * published by the Free Software Foundation. |
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15 | | - * |
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16 | 12 | */ |
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17 | 13 | |
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18 | 14 | #ifndef TMIO_MMC_H |
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.. | .. |
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47 | 43 | #define CTL_RESET_SD 0xe0 |
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48 | 44 | #define CTL_VERSION 0xe2 |
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49 | 45 | #define CTL_SDIF_MODE 0xe6 |
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50 | | -#define CTL_SDIO_REGS 0x100 |
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51 | | -#define CTL_CLK_AND_WAIT_CTL 0x138 |
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52 | | -#define CTL_RESET_SDIO 0x1e0 |
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53 | 46 | |
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54 | 47 | /* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */ |
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55 | 48 | #define TMIO_STOP_STP BIT(0) |
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.. | .. |
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77 | 70 | #define TMIO_STAT_DAT0 BIT(23) /* only known on R-Car so far */ |
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78 | 71 | #define TMIO_STAT_RXRDY BIT(24) |
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79 | 72 | #define TMIO_STAT_TXRQ BIT(25) |
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| 73 | +#define TMIO_STAT_ALWAYS_SET_27 BIT(27) /* only known on R-Car 2+ so far */ |
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80 | 74 | #define TMIO_STAT_ILL_FUNC BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */ |
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81 | 75 | #define TMIO_STAT_SCLKDIVEN BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */ |
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82 | 76 | #define TMIO_STAT_CMD_BUSY BIT(30) |
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.. | .. |
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103 | 97 | |
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104 | 98 | /* Define some IRQ masks */ |
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105 | 99 | /* This is the mask used at reset by the chip */ |
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| 100 | +#define TMIO_MASK_INIT_RCAR2 0x8b7f031d /* Initial value for R-Car Gen2+ */ |
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106 | 101 | #define TMIO_MASK_ALL 0x837f031d |
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107 | 102 | #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND) |
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108 | 103 | #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND) |
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109 | 104 | #define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ |
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110 | 105 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) |
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111 | 106 | #define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) |
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| 107 | + |
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| 108 | +#define TMIO_MAX_BLK_SIZE 512 |
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112 | 109 | |
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113 | 110 | struct tmio_mmc_data; |
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114 | 111 | struct tmio_mmc_host; |
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.. | .. |
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121 | 118 | void (*release)(struct tmio_mmc_host *host); |
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122 | 119 | void (*abort)(struct tmio_mmc_host *host); |
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123 | 120 | void (*dataend)(struct tmio_mmc_host *host); |
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| 121 | + |
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| 122 | + /* optional */ |
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| 123 | + void (*end)(struct tmio_mmc_host *host); /* held host->lock */ |
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124 | 124 | }; |
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125 | 125 | |
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126 | 126 | struct tmio_mmc_host { |
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.. | .. |
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133 | 133 | |
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134 | 134 | /* Callbacks for clock / power control */ |
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135 | 135 | void (*set_pwr)(struct platform_device *host, int state); |
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136 | | - void (*set_clk_div)(struct platform_device *host, int state); |
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137 | 136 | |
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138 | 137 | /* pio related stuff */ |
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139 | 138 | struct scatterlist *sg_ptr; |
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.. | .. |
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146 | 145 | struct tmio_mmc_data *pdata; |
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147 | 146 | |
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148 | 147 | /* DMA support */ |
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149 | | - bool force_pio; |
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| 148 | + bool dma_on; |
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150 | 149 | struct dma_chan *chan_rx; |
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151 | 150 | struct dma_chan *chan_tx; |
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152 | 151 | struct tasklet_struct dma_issue; |
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.. | .. |
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161 | 160 | u32 sdcard_irq_mask; |
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162 | 161 | u32 sdio_irq_mask; |
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163 | 162 | unsigned int clk_cache; |
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| 163 | + u32 sdcard_irq_setbit_mask; |
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164 | 164 | |
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165 | 165 | spinlock_t lock; /* protect host private data */ |
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166 | 166 | unsigned long last_req_ts; |
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.. | .. |
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170 | 170 | |
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171 | 171 | /* Mandatory callback */ |
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172 | 172 | int (*clk_enable)(struct tmio_mmc_host *host); |
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| 173 | + void (*set_clock)(struct tmio_mmc_host *host, unsigned int clock); |
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173 | 174 | |
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174 | 175 | /* Optional callbacks */ |
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175 | | - unsigned int (*clk_update)(struct tmio_mmc_host *host, |
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176 | | - unsigned int new_clock); |
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177 | 176 | void (*clk_disable)(struct tmio_mmc_host *host); |
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178 | 177 | int (*multi_io_quirk)(struct mmc_card *card, |
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179 | 178 | unsigned int direction, int blk_size); |
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180 | 179 | int (*write16_hook)(struct tmio_mmc_host *host, int addr); |
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181 | | - void (*hw_reset)(struct tmio_mmc_host *host); |
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182 | | - void (*prepare_tuning)(struct tmio_mmc_host *host, unsigned long tap); |
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183 | | - bool (*check_scc_error)(struct tmio_mmc_host *host); |
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184 | | - |
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185 | | - /* |
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186 | | - * Mandatory callback for tuning to occur which is optional for SDR50 |
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187 | | - * and mandatory for SDR104. |
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188 | | - */ |
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189 | | - unsigned int (*init_tuning)(struct tmio_mmc_host *host); |
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190 | | - int (*select_tuning)(struct tmio_mmc_host *host); |
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191 | | - |
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192 | | - /* Tuning values: 1 for success, 0 for failure */ |
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193 | | - DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long)); |
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194 | | - unsigned int tap_num; |
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195 | | - unsigned long tap_set; |
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| 180 | + void (*reset)(struct tmio_mmc_host *host); |
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| 181 | + bool (*check_retune)(struct tmio_mmc_host *host); |
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| 182 | + void (*fixup_request)(struct tmio_mmc_host *host, struct mmc_request *mrq); |
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196 | 183 | |
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197 | 184 | void (*prepare_hs400_tuning)(struct tmio_mmc_host *host); |
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198 | 185 | void (*hs400_downgrade)(struct tmio_mmc_host *host); |
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.. | .. |
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275 | 262 | static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host, |
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276 | 263 | int addr, u32 val) |
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277 | 264 | { |
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| 265 | + if (addr == CTL_IRQ_MASK || addr == CTL_STATUS) |
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| 266 | + val |= host->sdcard_irq_setbit_mask; |
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| 267 | + |
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278 | 268 | iowrite16(val & 0xffff, host->ctl + (addr << host->bus_shift)); |
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279 | 269 | iowrite16(val >> 16, host->ctl + ((addr + 2) << host->bus_shift)); |
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280 | 270 | } |
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