Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 2 | * linux/drivers/mmc/host/au1xmmc.c - AU1XX0 MMC driver |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 3 | * |
| 4 | * Copyright (c) 2005, Advanced Micro Devices, Inc. |
| 5 | * |
| 6 | * Developed with help from the 2.4.30 MMC AU1XXX controller including |
| 7 | * the following copyright notices: |
| 8 | * Copyright (c) 2003-2004 Embedded Edge, LLC. |
| 9 | * Portions Copyright (C) 2002 Embedix, Inc |
| 10 | * Copyright 2002 Hewlett-Packard Company |
| 11 | |
| 12 | * 2.6 version of this driver inspired by: |
| 13 | * (drivers/mmc/wbsd.c) Copyright (C) 2004-2005 Pierre Ossman, |
| 14 | * All Rights Reserved. |
| 15 | * (drivers/mmc/pxa.c) Copyright (C) 2003 Russell King, |
| 16 | * All Rights Reserved. |
| 17 | * |
| 18 | |
| 19 | * This program is free software; you can redistribute it and/or modify |
| 20 | * it under the terms of the GNU General Public License version 2 as |
| 21 | * published by the Free Software Foundation. |
| 22 | */ |
| 23 | |
| 24 | /* Why is a timer used to detect insert events? |
| 25 | * |
| 26 | * From the AU1100 MMC application guide: |
| 27 | * If the Au1100-based design is intended to support both MultiMediaCards |
| 28 | * and 1- or 4-data bit SecureDigital cards, then the solution is to |
| 29 | * connect a weak (560KOhm) pull-up resistor to connector pin 1. |
| 30 | * In doing so, a MMC card never enters SPI-mode communications, |
| 31 | * but now the SecureDigital card-detect feature of CD/DAT3 is ineffective |
| 32 | * (the low to high transition will not occur). |
| 33 | * |
| 34 | * So we use the timer to check the status manually. |
| 35 | */ |
| 36 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | #include <linux/init.h> |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 39 | #include <linux/platform_device.h> |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 40 | #include <linux/mm.h> |
| 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/dma-mapping.h> |
Al Viro | 0ada7a0 | 2007-10-27 19:40:46 +0100 | [diff] [blame] | 43 | #include <linux/scatterlist.h> |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 44 | #include <linux/leds.h> |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 45 | #include <linux/mmc/host.h> |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 46 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 47 | #include <asm/io.h> |
| 48 | #include <asm/mach-au1x00/au1000.h> |
| 49 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 50 | #include <asm/mach-au1x00/au1100_mmc.h> |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 51 | |
| 52 | #include <au1xxx.h> |
| 53 | #include "au1xmmc.h" |
| 54 | |
| 55 | #define DRIVER_NAME "au1xxx-mmc" |
| 56 | |
| 57 | /* Set this to enable special debugging macros */ |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 58 | /* #define DEBUG */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 59 | |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 60 | #ifdef DEBUG |
| 61 | #define DBG(fmt, idx, args...) printk("au1xx(%d): DEBUG: " fmt, idx, ##args) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 62 | #else |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 63 | #define DBG(fmt, idx, args...) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 64 | #endif |
| 65 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 66 | static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask) |
| 67 | { |
| 68 | u32 val = au_readl(HOST_CONFIG(host)); |
| 69 | val |= mask; |
| 70 | au_writel(val, HOST_CONFIG(host)); |
| 71 | au_sync(); |
| 72 | } |
| 73 | |
| 74 | static inline void FLUSH_FIFO(struct au1xmmc_host *host) |
| 75 | { |
| 76 | u32 val = au_readl(HOST_CONFIG2(host)); |
| 77 | |
| 78 | au_writel(val | SD_CONFIG2_FF, HOST_CONFIG2(host)); |
| 79 | au_sync_delay(1); |
| 80 | |
| 81 | /* SEND_STOP will turn off clock control - this re-enables it */ |
| 82 | val &= ~SD_CONFIG2_DF; |
| 83 | |
| 84 | au_writel(val, HOST_CONFIG2(host)); |
| 85 | au_sync(); |
| 86 | } |
| 87 | |
| 88 | static inline void IRQ_OFF(struct au1xmmc_host *host, u32 mask) |
| 89 | { |
| 90 | u32 val = au_readl(HOST_CONFIG(host)); |
| 91 | val &= ~mask; |
| 92 | au_writel(val, HOST_CONFIG(host)); |
| 93 | au_sync(); |
| 94 | } |
| 95 | |
| 96 | static inline void SEND_STOP(struct au1xmmc_host *host) |
| 97 | { |
Manuel Lauss | 281dd23 | 2008-06-09 08:37:33 +0200 | [diff] [blame^] | 98 | u32 config2; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 99 | |
| 100 | WARN_ON(host->status != HOST_S_DATA); |
| 101 | host->status = HOST_S_STOP; |
| 102 | |
Manuel Lauss | 281dd23 | 2008-06-09 08:37:33 +0200 | [diff] [blame^] | 103 | config2 = au_readl(HOST_CONFIG2(host)); |
| 104 | au_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host)); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 105 | au_sync(); |
| 106 | |
| 107 | /* Send the stop commmand */ |
| 108 | au_writel(STOP_CMD, HOST_CMD(host)); |
| 109 | } |
| 110 | |
| 111 | static void au1xmmc_set_power(struct au1xmmc_host *host, int state) |
| 112 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 113 | if (host->platdata && host->platdata->set_power) |
| 114 | host->platdata->set_power(host->mmc, state); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 117 | static int au1xmmc_card_inserted(struct au1xmmc_host *host) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 118 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 119 | int ret; |
| 120 | |
| 121 | if (host->platdata && host->platdata->card_inserted) |
| 122 | ret = host->platdata->card_inserted(host->mmc); |
| 123 | else |
| 124 | ret = 1; /* assume there is a card */ |
| 125 | |
| 126 | return ret; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 127 | } |
| 128 | |
Manuel Lauss | 8299977 | 2007-01-25 10:29:24 +0100 | [diff] [blame] | 129 | static int au1xmmc_card_readonly(struct mmc_host *mmc) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 130 | { |
Manuel Lauss | 8299977 | 2007-01-25 10:29:24 +0100 | [diff] [blame] | 131 | struct au1xmmc_host *host = mmc_priv(mmc); |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 132 | int ret; |
| 133 | |
| 134 | if (host->platdata && host->platdata->card_readonly) |
| 135 | ret = host->platdata->card_readonly(mmc); |
| 136 | else |
| 137 | ret = 0; /* assume card is read-write */ |
| 138 | |
| 139 | return ret; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | static void au1xmmc_finish_request(struct au1xmmc_host *host) |
| 143 | { |
| 144 | |
| 145 | struct mmc_request *mrq = host->mrq; |
| 146 | |
| 147 | host->mrq = NULL; |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 148 | host->flags &= HOST_F_ACTIVE | HOST_F_DMA; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 149 | |
| 150 | host->dma.len = 0; |
| 151 | host->dma.dir = 0; |
| 152 | |
| 153 | host->pio.index = 0; |
| 154 | host->pio.offset = 0; |
| 155 | host->pio.len = 0; |
| 156 | |
| 157 | host->status = HOST_S_IDLE; |
| 158 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 159 | mmc_request_done(host->mmc, mrq); |
| 160 | } |
| 161 | |
| 162 | static void au1xmmc_tasklet_finish(unsigned long param) |
| 163 | { |
| 164 | struct au1xmmc_host *host = (struct au1xmmc_host *) param; |
| 165 | au1xmmc_finish_request(host); |
| 166 | } |
| 167 | |
| 168 | static int au1xmmc_send_command(struct au1xmmc_host *host, int wait, |
Pierre Ossman | be0192a | 2007-07-24 21:11:47 +0200 | [diff] [blame] | 169 | struct mmc_command *cmd, struct mmc_data *data) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 170 | { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 171 | u32 mmccmd = (cmd->opcode << SD_CMD_CI_SHIFT); |
| 172 | |
Martin Michlmayr | e142c24 | 2006-03-04 23:01:39 +0000 | [diff] [blame] | 173 | switch (mmc_resp_type(cmd)) { |
Manuel Lauss | 279bc44 | 2007-01-25 10:27:41 +0100 | [diff] [blame] | 174 | case MMC_RSP_NONE: |
| 175 | break; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 176 | case MMC_RSP_R1: |
| 177 | mmccmd |= SD_CMD_RT_1; |
| 178 | break; |
| 179 | case MMC_RSP_R1B: |
| 180 | mmccmd |= SD_CMD_RT_1B; |
| 181 | break; |
| 182 | case MMC_RSP_R2: |
| 183 | mmccmd |= SD_CMD_RT_2; |
| 184 | break; |
| 185 | case MMC_RSP_R3: |
| 186 | mmccmd |= SD_CMD_RT_3; |
| 187 | break; |
Manuel Lauss | 279bc44 | 2007-01-25 10:27:41 +0100 | [diff] [blame] | 188 | default: |
| 189 | printk(KERN_INFO "au1xmmc: unhandled response type %02x\n", |
| 190 | mmc_resp_type(cmd)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 191 | return -EINVAL; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 192 | } |
| 193 | |
Pierre Ossman | be0192a | 2007-07-24 21:11:47 +0200 | [diff] [blame] | 194 | if (data) { |
Pierre Ossman | 6356a9d | 2007-10-22 18:16:16 +0200 | [diff] [blame] | 195 | if (data->flags & MMC_DATA_READ) { |
Pierre Ossman | be0192a | 2007-07-24 21:11:47 +0200 | [diff] [blame] | 196 | if (data->blocks > 1) |
| 197 | mmccmd |= SD_CMD_CT_4; |
| 198 | else |
| 199 | mmccmd |= SD_CMD_CT_2; |
Pierre Ossman | 6356a9d | 2007-10-22 18:16:16 +0200 | [diff] [blame] | 200 | } else if (data->flags & MMC_DATA_WRITE) { |
Pierre Ossman | be0192a | 2007-07-24 21:11:47 +0200 | [diff] [blame] | 201 | if (data->blocks > 1) |
| 202 | mmccmd |= SD_CMD_CT_3; |
| 203 | else |
| 204 | mmccmd |= SD_CMD_CT_1; |
| 205 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | au_writel(cmd->arg, HOST_CMDARG(host)); |
| 209 | au_sync(); |
| 210 | |
| 211 | if (wait) |
| 212 | IRQ_OFF(host, SD_CONFIG_CR); |
| 213 | |
| 214 | au_writel((mmccmd | SD_CMD_GO), HOST_CMD(host)); |
| 215 | au_sync(); |
| 216 | |
| 217 | /* Wait for the command to go on the line */ |
| 218 | |
| 219 | while(1) { |
| 220 | if (!(au_readl(HOST_CMD(host)) & SD_CMD_GO)) |
| 221 | break; |
| 222 | } |
| 223 | |
| 224 | /* Wait for the command to come back */ |
| 225 | |
| 226 | if (wait) { |
| 227 | u32 status = au_readl(HOST_STATUS(host)); |
| 228 | |
| 229 | while(!(status & SD_STATUS_CR)) |
| 230 | status = au_readl(HOST_STATUS(host)); |
| 231 | |
| 232 | /* Clear the CR status */ |
| 233 | au_writel(SD_STATUS_CR, HOST_STATUS(host)); |
| 234 | |
| 235 | IRQ_ON(host, SD_CONFIG_CR); |
| 236 | } |
| 237 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 238 | return 0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status) |
| 242 | { |
| 243 | |
| 244 | struct mmc_request *mrq = host->mrq; |
| 245 | struct mmc_data *data; |
| 246 | u32 crc; |
| 247 | |
| 248 | WARN_ON(host->status != HOST_S_DATA && host->status != HOST_S_STOP); |
| 249 | |
| 250 | if (host->mrq == NULL) |
| 251 | return; |
| 252 | |
| 253 | data = mrq->cmd->data; |
| 254 | |
| 255 | if (status == 0) |
| 256 | status = au_readl(HOST_STATUS(host)); |
| 257 | |
| 258 | /* The transaction is really over when the SD_STATUS_DB bit is clear */ |
| 259 | |
| 260 | while((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB)) |
| 261 | status = au_readl(HOST_STATUS(host)); |
| 262 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 263 | data->error = 0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 264 | dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir); |
| 265 | |
| 266 | /* Process any errors */ |
| 267 | |
| 268 | crc = (status & (SD_STATUS_WC | SD_STATUS_RC)); |
| 269 | if (host->flags & HOST_F_XMIT) |
| 270 | crc |= ((status & 0x07) == 0x02) ? 0 : 1; |
| 271 | |
| 272 | if (crc) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 273 | data->error = -EILSEQ; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 274 | |
| 275 | /* Clear the CRC bits */ |
| 276 | au_writel(SD_STATUS_WC | SD_STATUS_RC, HOST_STATUS(host)); |
| 277 | |
| 278 | data->bytes_xfered = 0; |
| 279 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 280 | if (!data->error) { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 281 | if (host->flags & HOST_F_DMA) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 282 | #ifdef CONFIG_SOC_AU1200 /* DBDMA */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 283 | u32 chan = DMA_CHANNEL(host); |
| 284 | |
| 285 | chan_tab_t *c = *((chan_tab_t **) chan); |
| 286 | au1x_dma_chan_t *cp = c->chan_ptr; |
| 287 | data->bytes_xfered = cp->ddma_bytecnt; |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 288 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 289 | } |
| 290 | else |
| 291 | data->bytes_xfered = |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 292 | (data->blocks * data->blksz) - |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 293 | host->pio.len; |
| 294 | } |
| 295 | |
| 296 | au1xmmc_finish_request(host); |
| 297 | } |
| 298 | |
| 299 | static void au1xmmc_tasklet_data(unsigned long param) |
| 300 | { |
| 301 | struct au1xmmc_host *host = (struct au1xmmc_host *) param; |
| 302 | |
| 303 | u32 status = au_readl(HOST_STATUS(host)); |
| 304 | au1xmmc_data_complete(host, status); |
| 305 | } |
| 306 | |
| 307 | #define AU1XMMC_MAX_TRANSFER 8 |
| 308 | |
| 309 | static void au1xmmc_send_pio(struct au1xmmc_host *host) |
| 310 | { |
| 311 | |
| 312 | struct mmc_data *data = 0; |
| 313 | int sg_len, max, count = 0; |
| 314 | unsigned char *sg_ptr; |
| 315 | u32 status = 0; |
| 316 | struct scatterlist *sg; |
| 317 | |
| 318 | data = host->mrq->data; |
| 319 | |
| 320 | if (!(host->flags & HOST_F_XMIT)) |
| 321 | return; |
| 322 | |
| 323 | /* This is the pointer to the data buffer */ |
| 324 | sg = &data->sg[host->pio.index]; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 325 | sg_ptr = sg_virt(sg) + host->pio.offset; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 326 | |
| 327 | /* This is the space left inside the buffer */ |
| 328 | sg_len = data->sg[host->pio.index].length - host->pio.offset; |
| 329 | |
| 330 | /* Check to if we need less then the size of the sg_buffer */ |
| 331 | |
| 332 | max = (sg_len > host->pio.len) ? host->pio.len : sg_len; |
| 333 | if (max > AU1XMMC_MAX_TRANSFER) max = AU1XMMC_MAX_TRANSFER; |
| 334 | |
| 335 | for(count = 0; count < max; count++ ) { |
| 336 | unsigned char val; |
| 337 | |
| 338 | status = au_readl(HOST_STATUS(host)); |
| 339 | |
| 340 | if (!(status & SD_STATUS_TH)) |
| 341 | break; |
| 342 | |
| 343 | val = *sg_ptr++; |
| 344 | |
| 345 | au_writel((unsigned long) val, HOST_TXPORT(host)); |
| 346 | au_sync(); |
| 347 | } |
| 348 | |
| 349 | host->pio.len -= count; |
| 350 | host->pio.offset += count; |
| 351 | |
| 352 | if (count == sg_len) { |
| 353 | host->pio.index++; |
| 354 | host->pio.offset = 0; |
| 355 | } |
| 356 | |
| 357 | if (host->pio.len == 0) { |
| 358 | IRQ_OFF(host, SD_CONFIG_TH); |
| 359 | |
| 360 | if (host->flags & HOST_F_STOP) |
| 361 | SEND_STOP(host); |
| 362 | |
| 363 | tasklet_schedule(&host->data_task); |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | static void au1xmmc_receive_pio(struct au1xmmc_host *host) |
| 368 | { |
| 369 | |
| 370 | struct mmc_data *data = 0; |
| 371 | int sg_len = 0, max = 0, count = 0; |
| 372 | unsigned char *sg_ptr = 0; |
| 373 | u32 status = 0; |
| 374 | struct scatterlist *sg; |
| 375 | |
| 376 | data = host->mrq->data; |
| 377 | |
| 378 | if (!(host->flags & HOST_F_RECV)) |
| 379 | return; |
| 380 | |
| 381 | max = host->pio.len; |
| 382 | |
| 383 | if (host->pio.index < host->dma.len) { |
| 384 | sg = &data->sg[host->pio.index]; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 385 | sg_ptr = sg_virt(sg) + host->pio.offset; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 386 | |
| 387 | /* This is the space left inside the buffer */ |
| 388 | sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset; |
| 389 | |
| 390 | /* Check to if we need less then the size of the sg_buffer */ |
| 391 | if (sg_len < max) max = sg_len; |
| 392 | } |
| 393 | |
| 394 | if (max > AU1XMMC_MAX_TRANSFER) |
| 395 | max = AU1XMMC_MAX_TRANSFER; |
| 396 | |
| 397 | for(count = 0; count < max; count++ ) { |
| 398 | u32 val; |
| 399 | status = au_readl(HOST_STATUS(host)); |
| 400 | |
| 401 | if (!(status & SD_STATUS_NE)) |
| 402 | break; |
| 403 | |
| 404 | if (status & SD_STATUS_RC) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 405 | DBG("RX CRC Error [%d + %d].\n", host->pdev->id, |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 406 | host->pio.len, count); |
| 407 | break; |
| 408 | } |
| 409 | |
| 410 | if (status & SD_STATUS_RO) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 411 | DBG("RX Overrun [%d + %d]\n", host->pdev->id, |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 412 | host->pio.len, count); |
| 413 | break; |
| 414 | } |
| 415 | else if (status & SD_STATUS_RU) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 416 | DBG("RX Underrun [%d + %d]\n", host->pdev->id, |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 417 | host->pio.len, count); |
| 418 | break; |
| 419 | } |
| 420 | |
| 421 | val = au_readl(HOST_RXPORT(host)); |
| 422 | |
| 423 | if (sg_ptr) |
| 424 | *sg_ptr++ = (unsigned char) (val & 0xFF); |
| 425 | } |
| 426 | |
| 427 | host->pio.len -= count; |
| 428 | host->pio.offset += count; |
| 429 | |
| 430 | if (sg_len && count == sg_len) { |
| 431 | host->pio.index++; |
| 432 | host->pio.offset = 0; |
| 433 | } |
| 434 | |
| 435 | if (host->pio.len == 0) { |
| 436 | //IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF); |
| 437 | IRQ_OFF(host, SD_CONFIG_NE); |
| 438 | |
| 439 | if (host->flags & HOST_F_STOP) |
| 440 | SEND_STOP(host); |
| 441 | |
| 442 | tasklet_schedule(&host->data_task); |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | /* static void au1xmmc_cmd_complete |
| 447 | This is called when a command has been completed - grab the response |
| 448 | and check for errors. Then start the data transfer if it is indicated. |
| 449 | */ |
| 450 | |
| 451 | static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status) |
| 452 | { |
| 453 | |
| 454 | struct mmc_request *mrq = host->mrq; |
| 455 | struct mmc_command *cmd; |
| 456 | int trans; |
| 457 | |
| 458 | if (!host->mrq) |
| 459 | return; |
| 460 | |
| 461 | cmd = mrq->cmd; |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 462 | cmd->error = 0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 463 | |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 464 | if (cmd->flags & MMC_RSP_PRESENT) { |
| 465 | if (cmd->flags & MMC_RSP_136) { |
| 466 | u32 r[4]; |
| 467 | int i; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 468 | |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 469 | r[0] = au_readl(host->iobase + SD_RESP3); |
| 470 | r[1] = au_readl(host->iobase + SD_RESP2); |
| 471 | r[2] = au_readl(host->iobase + SD_RESP1); |
| 472 | r[3] = au_readl(host->iobase + SD_RESP0); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 473 | |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 474 | /* The CRC is omitted from the response, so really |
| 475 | * we only got 120 bytes, but the engine expects |
| 476 | * 128 bits, so we have to shift things up |
| 477 | */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 478 | |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 479 | for(i = 0; i < 4; i++) { |
| 480 | cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8; |
| 481 | if (i != 3) |
| 482 | cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24; |
| 483 | } |
| 484 | } else { |
| 485 | /* Techincally, we should be getting all 48 bits of |
| 486 | * the response (SD_RESP1 + SD_RESP2), but because |
| 487 | * our response omits the CRC, our data ends up |
| 488 | * being shifted 8 bits to the right. In this case, |
| 489 | * that means that the OSR data starts at bit 31, |
| 490 | * so we can just read RESP0 and return that |
| 491 | */ |
| 492 | cmd->resp[0] = au_readl(host->iobase + SD_RESP0); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 493 | } |
| 494 | } |
| 495 | |
| 496 | /* Figure out errors */ |
| 497 | |
| 498 | if (status & (SD_STATUS_SC | SD_STATUS_WC | SD_STATUS_RC)) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 499 | cmd->error = -EILSEQ; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 500 | |
| 501 | trans = host->flags & (HOST_F_XMIT | HOST_F_RECV); |
| 502 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 503 | if (!trans || cmd->error) { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 504 | |
| 505 | IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA|SD_CONFIG_RF); |
| 506 | tasklet_schedule(&host->finish_task); |
| 507 | return; |
| 508 | } |
| 509 | |
| 510 | host->status = HOST_S_DATA; |
| 511 | |
| 512 | if (host->flags & HOST_F_DMA) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 513 | #ifdef CONFIG_SOC_AU1200 /* DBDMA */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 514 | u32 channel = DMA_CHANNEL(host); |
| 515 | |
| 516 | /* Start the DMA as soon as the buffer gets something in it */ |
| 517 | |
| 518 | if (host->flags & HOST_F_RECV) { |
| 519 | u32 mask = SD_STATUS_DB | SD_STATUS_NE; |
| 520 | |
| 521 | while((status & mask) != mask) |
| 522 | status = au_readl(HOST_STATUS(host)); |
| 523 | } |
| 524 | |
| 525 | au1xxx_dbdma_start(channel); |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 526 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 527 | } |
| 528 | } |
| 529 | |
| 530 | static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate) |
| 531 | { |
| 532 | |
| 533 | unsigned int pbus = get_au1x00_speed(); |
| 534 | unsigned int divisor; |
| 535 | u32 config; |
| 536 | |
| 537 | /* From databook: |
| 538 | divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1 |
| 539 | */ |
| 540 | |
| 541 | pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2); |
| 542 | pbus /= 2; |
| 543 | |
| 544 | divisor = ((pbus / rate) / 2) - 1; |
| 545 | |
| 546 | config = au_readl(HOST_CONFIG(host)); |
| 547 | |
| 548 | config &= ~(SD_CONFIG_DIV); |
| 549 | config |= (divisor & SD_CONFIG_DIV) | SD_CONFIG_DE; |
| 550 | |
| 551 | au_writel(config, HOST_CONFIG(host)); |
| 552 | au_sync(); |
| 553 | } |
| 554 | |
| 555 | static int |
| 556 | au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data) |
| 557 | { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 558 | int datalen = data->blocks * data->blksz; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 559 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 560 | if (data->flags & MMC_DATA_READ) |
| 561 | host->flags |= HOST_F_RECV; |
| 562 | else |
| 563 | host->flags |= HOST_F_XMIT; |
| 564 | |
| 565 | if (host->mrq->stop) |
| 566 | host->flags |= HOST_F_STOP; |
| 567 | |
| 568 | host->dma.dir = DMA_BIDIRECTIONAL; |
| 569 | |
| 570 | host->dma.len = dma_map_sg(mmc_dev(host->mmc), data->sg, |
| 571 | data->sg_len, host->dma.dir); |
| 572 | |
| 573 | if (host->dma.len == 0) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 574 | return -ETIMEDOUT; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 575 | |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 576 | au_writel(data->blksz - 1, HOST_BLKSIZE(host)); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 577 | |
| 578 | if (host->flags & HOST_F_DMA) { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 579 | #ifdef CONFIG_SOC_AU1200 /* DBDMA */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 580 | int i; |
| 581 | u32 channel = DMA_CHANNEL(host); |
| 582 | |
| 583 | au1xxx_dbdma_stop(channel); |
| 584 | |
| 585 | for(i = 0; i < host->dma.len; i++) { |
| 586 | u32 ret = 0, flags = DDMA_FLAGS_NOIE; |
| 587 | struct scatterlist *sg = &data->sg[i]; |
| 588 | int sg_len = sg->length; |
| 589 | |
| 590 | int len = (datalen > sg_len) ? sg_len : datalen; |
| 591 | |
| 592 | if (i == host->dma.len - 1) |
| 593 | flags = DDMA_FLAGS_IE; |
| 594 | |
| 595 | if (host->flags & HOST_F_XMIT){ |
| 596 | ret = au1xxx_dbdma_put_source_flags(channel, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 597 | (void *) sg_virt(sg), len, flags); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 598 | } |
| 599 | else { |
| 600 | ret = au1xxx_dbdma_put_dest_flags(channel, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 601 | (void *) sg_virt(sg), |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 602 | len, flags); |
| 603 | } |
| 604 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 605 | if (!ret) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 606 | goto dataerr; |
| 607 | |
| 608 | datalen -= len; |
| 609 | } |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 610 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 611 | } |
| 612 | else { |
| 613 | host->pio.index = 0; |
| 614 | host->pio.offset = 0; |
| 615 | host->pio.len = datalen; |
| 616 | |
| 617 | if (host->flags & HOST_F_XMIT) |
| 618 | IRQ_ON(host, SD_CONFIG_TH); |
| 619 | else |
| 620 | IRQ_ON(host, SD_CONFIG_NE); |
| 621 | //IRQ_ON(host, SD_CONFIG_RA|SD_CONFIG_RF); |
| 622 | } |
| 623 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 624 | return 0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 625 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 626 | dataerr: |
| 627 | dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, |
| 628 | host->dma.dir); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 629 | return -ETIMEDOUT; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | /* static void au1xmmc_request |
| 633 | This actually starts a command or data transaction |
| 634 | */ |
| 635 | |
| 636 | static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq) |
| 637 | { |
| 638 | |
| 639 | struct au1xmmc_host *host = mmc_priv(mmc); |
Yoichi Yuasa | c0f3b6c | 2007-05-13 18:23:15 +0200 | [diff] [blame] | 640 | unsigned int flags = 0; |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 641 | int ret = 0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 642 | |
| 643 | WARN_ON(irqs_disabled()); |
| 644 | WARN_ON(host->status != HOST_S_IDLE); |
| 645 | |
| 646 | host->mrq = mrq; |
| 647 | host->status = HOST_S_CMD; |
| 648 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 649 | if (mrq->data) { |
| 650 | FLUSH_FIFO(host); |
Yoichi Yuasa | c0f3b6c | 2007-05-13 18:23:15 +0200 | [diff] [blame] | 651 | flags = mrq->data->flags; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 652 | ret = au1xmmc_prepare_data(host, mrq->data); |
| 653 | } |
| 654 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 655 | if (!ret) |
Pierre Ossman | be0192a | 2007-07-24 21:11:47 +0200 | [diff] [blame] | 656 | ret = au1xmmc_send_command(host, 0, mrq->cmd, mrq->data); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 657 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 658 | if (ret) { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 659 | mrq->cmd->error = ret; |
| 660 | au1xmmc_finish_request(host); |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | static void au1xmmc_reset_controller(struct au1xmmc_host *host) |
| 665 | { |
| 666 | |
| 667 | /* Apply the clock */ |
| 668 | au_writel(SD_ENABLE_CE, HOST_ENABLE(host)); |
| 669 | au_sync_delay(1); |
| 670 | |
| 671 | au_writel(SD_ENABLE_R | SD_ENABLE_CE, HOST_ENABLE(host)); |
| 672 | au_sync_delay(5); |
| 673 | |
| 674 | au_writel(~0, HOST_STATUS(host)); |
| 675 | au_sync(); |
| 676 | |
| 677 | au_writel(0, HOST_BLKSIZE(host)); |
| 678 | au_writel(0x001fffff, HOST_TIMEOUT(host)); |
| 679 | au_sync(); |
| 680 | |
| 681 | au_writel(SD_CONFIG2_EN, HOST_CONFIG2(host)); |
| 682 | au_sync(); |
| 683 | |
| 684 | au_writel(SD_CONFIG2_EN | SD_CONFIG2_FF, HOST_CONFIG2(host)); |
| 685 | au_sync_delay(1); |
| 686 | |
| 687 | au_writel(SD_CONFIG2_EN, HOST_CONFIG2(host)); |
| 688 | au_sync(); |
| 689 | |
| 690 | /* Configure interrupts */ |
| 691 | au_writel(AU1XMMC_INTERRUPTS, HOST_CONFIG(host)); |
| 692 | au_sync(); |
| 693 | } |
| 694 | |
| 695 | |
| 696 | static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios) |
| 697 | { |
| 698 | struct au1xmmc_host *host = mmc_priv(mmc); |
Manuel Lauss | 281dd23 | 2008-06-09 08:37:33 +0200 | [diff] [blame^] | 699 | u32 config2; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 700 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 701 | if (ios->power_mode == MMC_POWER_OFF) |
| 702 | au1xmmc_set_power(host, 0); |
| 703 | else if (ios->power_mode == MMC_POWER_ON) { |
| 704 | au1xmmc_set_power(host, 1); |
| 705 | } |
| 706 | |
| 707 | if (ios->clock && ios->clock != host->clock) { |
| 708 | au1xmmc_set_clock(host, ios->clock); |
| 709 | host->clock = ios->clock; |
| 710 | } |
Manuel Lauss | 281dd23 | 2008-06-09 08:37:33 +0200 | [diff] [blame^] | 711 | |
| 712 | config2 = au_readl(HOST_CONFIG2(host)); |
| 713 | switch (ios->bus_width) { |
| 714 | case MMC_BUS_WIDTH_4: |
| 715 | config2 |= SD_CONFIG2_WB; |
| 716 | break; |
| 717 | case MMC_BUS_WIDTH_1: |
| 718 | config2 &= ~SD_CONFIG2_WB; |
| 719 | break; |
| 720 | } |
| 721 | au_writel(config2, HOST_CONFIG2(host)); |
| 722 | au_sync(); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 723 | } |
| 724 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 725 | #define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT) |
| 726 | #define STATUS_DATA_IN (SD_STATUS_NE) |
| 727 | #define STATUS_DATA_OUT (SD_STATUS_TH) |
| 728 | |
| 729 | static irqreturn_t au1xmmc_irq(int irq, void *dev_id) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 730 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 731 | struct au1xmmc_host *host = dev_id; |
| 732 | u32 status; |
| 733 | |
| 734 | status = au_readl(HOST_STATUS(host)); |
| 735 | |
| 736 | if (!(status & SD_STATUS_I)) |
| 737 | return IRQ_NONE; /* not ours */ |
| 738 | |
| 739 | if (host->mrq && (status & STATUS_TIMEOUT)) { |
| 740 | if (status & SD_STATUS_RAT) |
| 741 | host->mrq->cmd->error = -ETIMEDOUT; |
| 742 | else if (status & SD_STATUS_DT) |
| 743 | host->mrq->data->error = -ETIMEDOUT; |
| 744 | |
| 745 | /* In PIO mode, interrupts might still be enabled */ |
| 746 | IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH); |
| 747 | |
| 748 | /* IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); */ |
| 749 | tasklet_schedule(&host->finish_task); |
| 750 | } |
| 751 | #if 0 |
| 752 | else if (status & SD_STATUS_DD) { |
| 753 | /* Sometimes we get a DD before a NE in PIO mode */ |
| 754 | if (!(host->flags & HOST_F_DMA) && (status & SD_STATUS_NE)) |
| 755 | au1xmmc_receive_pio(host); |
| 756 | else { |
| 757 | au1xmmc_data_complete(host, status); |
| 758 | /* tasklet_schedule(&host->data_task); */ |
| 759 | } |
| 760 | } |
| 761 | #endif |
| 762 | else if (status & SD_STATUS_CR) { |
| 763 | if (host->status == HOST_S_CMD) |
| 764 | au1xmmc_cmd_complete(host, status); |
| 765 | |
| 766 | } else if (!(host->flags & HOST_F_DMA)) { |
| 767 | if ((host->flags & HOST_F_XMIT) && (status & STATUS_DATA_OUT)) |
| 768 | au1xmmc_send_pio(host); |
| 769 | else if ((host->flags & HOST_F_RECV) && (status & STATUS_DATA_IN)) |
| 770 | au1xmmc_receive_pio(host); |
| 771 | |
| 772 | } else if (status & 0x203F3C70) { |
| 773 | DBG("Unhandled status %8.8x\n", host->pdev->id, |
| 774 | status); |
| 775 | } |
| 776 | |
| 777 | au_writel(status, HOST_STATUS(host)); |
| 778 | au_sync(); |
| 779 | |
| 780 | return IRQ_HANDLED; |
| 781 | } |
| 782 | |
| 783 | #ifdef CONFIG_SOC_AU1200 |
| 784 | /* 8bit memory DMA device */ |
| 785 | static dbdev_tab_t au1xmmc_mem_dbdev = { |
| 786 | .dev_id = DSCR_CMD0_ALWAYS, |
| 787 | .dev_flags = DEV_FLAGS_ANYUSE, |
| 788 | .dev_tsize = 0, |
| 789 | .dev_devwidth = 8, |
| 790 | .dev_physaddr = 0x00000000, |
| 791 | .dev_intlevel = 0, |
| 792 | .dev_intpolarity = 0, |
| 793 | }; |
| 794 | static int memid; |
| 795 | |
| 796 | static void au1xmmc_dbdma_callback(int irq, void *dev_id) |
| 797 | { |
| 798 | struct au1xmmc_host *host = (struct au1xmmc_host *)dev_id; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 799 | |
| 800 | /* Avoid spurious interrupts */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 801 | if (!host->mrq) |
| 802 | return; |
| 803 | |
| 804 | if (host->flags & HOST_F_STOP) |
| 805 | SEND_STOP(host); |
| 806 | |
| 807 | tasklet_schedule(&host->data_task); |
| 808 | } |
| 809 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 810 | static int au1xmmc_dbdma_init(struct au1xmmc_host *host) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 811 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 812 | struct resource *res; |
| 813 | int txid, rxid; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 814 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 815 | res = platform_get_resource(host->pdev, IORESOURCE_DMA, 0); |
| 816 | if (!res) |
| 817 | return -ENODEV; |
| 818 | txid = res->start; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 819 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 820 | res = platform_get_resource(host->pdev, IORESOURCE_DMA, 1); |
| 821 | if (!res) |
| 822 | return -ENODEV; |
| 823 | rxid = res->start; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 824 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 825 | if (!memid) |
| 826 | return -ENODEV; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 827 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 828 | host->tx_chan = au1xxx_dbdma_chan_alloc(memid, txid, |
| 829 | au1xmmc_dbdma_callback, (void *)host); |
| 830 | if (!host->tx_chan) { |
| 831 | dev_err(&host->pdev->dev, "cannot allocate TX DMA\n"); |
| 832 | return -ENODEV; |
| 833 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 834 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 835 | host->rx_chan = au1xxx_dbdma_chan_alloc(rxid, memid, |
| 836 | au1xmmc_dbdma_callback, (void *)host); |
| 837 | if (!host->rx_chan) { |
| 838 | dev_err(&host->pdev->dev, "cannot allocate RX DMA\n"); |
| 839 | au1xxx_dbdma_chan_free(host->tx_chan); |
| 840 | return -ENODEV; |
| 841 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 842 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 843 | au1xxx_dbdma_set_devwidth(host->tx_chan, 8); |
| 844 | au1xxx_dbdma_set_devwidth(host->rx_chan, 8); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 845 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 846 | au1xxx_dbdma_ring_alloc(host->tx_chan, AU1XMMC_DESCRIPTOR_COUNT); |
| 847 | au1xxx_dbdma_ring_alloc(host->rx_chan, AU1XMMC_DESCRIPTOR_COUNT); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 848 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 849 | /* DBDMA is good to go */ |
| 850 | host->flags |= HOST_F_DMA; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 851 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 852 | return 0; |
| 853 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 854 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 855 | static void au1xmmc_dbdma_shutdown(struct au1xmmc_host *host) |
| 856 | { |
| 857 | if (host->flags & HOST_F_DMA) { |
| 858 | host->flags &= ~HOST_F_DMA; |
| 859 | au1xxx_dbdma_chan_free(host->tx_chan); |
| 860 | au1xxx_dbdma_chan_free(host->rx_chan); |
| 861 | } |
| 862 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 863 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 864 | |
Yoichi Yuasa | bf8c80a | 2006-12-05 07:43:38 +0100 | [diff] [blame] | 865 | static const struct mmc_host_ops au1xmmc_ops = { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 866 | .request = au1xmmc_request, |
| 867 | .set_ios = au1xmmc_set_ios, |
Manuel Lauss | 8299977 | 2007-01-25 10:29:24 +0100 | [diff] [blame] | 868 | .get_ro = au1xmmc_card_readonly, |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 869 | }; |
| 870 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 871 | static void au1xmmc_poll_event(unsigned long arg) |
| 872 | { |
| 873 | struct au1xmmc_host *host = (struct au1xmmc_host *)arg; |
| 874 | int card = au1xmmc_card_inserted(host); |
| 875 | int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0; |
| 876 | |
| 877 | if (card != controller) { |
| 878 | host->flags &= ~HOST_F_ACTIVE; |
| 879 | if (card) |
| 880 | host->flags |= HOST_F_ACTIVE; |
| 881 | mmc_detect_change(host->mmc, 0); |
| 882 | } |
| 883 | |
| 884 | #ifdef DEBUG |
| 885 | if (host->mrq != NULL) { |
| 886 | u32 status = au_readl(HOST_STATUS(host)); |
| 887 | DBG("PENDING - %8.8x\n", host->pdev->id, status); |
| 888 | } |
| 889 | #endif |
| 890 | mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT); |
| 891 | } |
| 892 | |
| 893 | static void au1xmmc_init_cd_poll_timer(struct au1xmmc_host *host) |
| 894 | { |
| 895 | init_timer(&host->timer); |
| 896 | host->timer.function = au1xmmc_poll_event; |
| 897 | host->timer.data = (unsigned long)host; |
| 898 | host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT; |
| 899 | } |
| 900 | |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 901 | static int __devinit au1xmmc_probe(struct platform_device *pdev) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 902 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 903 | struct mmc_host *mmc; |
| 904 | struct au1xmmc_host *host; |
| 905 | struct resource *r; |
| 906 | int ret; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 907 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 908 | mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev); |
| 909 | if (!mmc) { |
| 910 | dev_err(&pdev->dev, "no memory for mmc_host\n"); |
| 911 | ret = -ENOMEM; |
| 912 | goto out0; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 913 | } |
| 914 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 915 | host = mmc_priv(mmc); |
| 916 | host->mmc = mmc; |
| 917 | host->platdata = pdev->dev.platform_data; |
| 918 | host->pdev = pdev; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 919 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 920 | ret = -ENODEV; |
| 921 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 922 | if (!r) { |
| 923 | dev_err(&pdev->dev, "no mmio defined\n"); |
| 924 | goto out1; |
| 925 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 926 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 927 | host->ioarea = request_mem_region(r->start, r->end - r->start + 1, |
| 928 | pdev->name); |
| 929 | if (!host->ioarea) { |
| 930 | dev_err(&pdev->dev, "mmio already in use\n"); |
| 931 | goto out1; |
| 932 | } |
| 933 | |
| 934 | host->iobase = (unsigned long)ioremap(r->start, 0x3c); |
| 935 | if (!host->iobase) { |
| 936 | dev_err(&pdev->dev, "cannot remap mmio\n"); |
| 937 | goto out2; |
| 938 | } |
| 939 | |
| 940 | r = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 941 | if (!r) { |
| 942 | dev_err(&pdev->dev, "no IRQ defined\n"); |
| 943 | goto out3; |
| 944 | } |
| 945 | |
| 946 | host->irq = r->start; |
| 947 | /* IRQ is shared among both SD controllers */ |
| 948 | ret = request_irq(host->irq, au1xmmc_irq, IRQF_SHARED, |
| 949 | DRIVER_NAME, host); |
| 950 | if (ret) { |
| 951 | dev_err(&pdev->dev, "cannot grab IRQ\n"); |
| 952 | goto out3; |
| 953 | } |
| 954 | |
| 955 | mmc->ops = &au1xmmc_ops; |
| 956 | |
| 957 | mmc->f_min = 450000; |
| 958 | mmc->f_max = 24000000; |
| 959 | |
| 960 | mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE; |
| 961 | mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT; |
| 962 | |
| 963 | mmc->max_blk_size = 2048; |
| 964 | mmc->max_blk_count = 512; |
| 965 | |
| 966 | mmc->ocr_avail = AU1XMMC_OCR; |
Manuel Lauss | 281dd23 | 2008-06-09 08:37:33 +0200 | [diff] [blame^] | 967 | mmc->caps = MMC_CAP_4_BIT_DATA; |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 968 | |
| 969 | host->status = HOST_S_IDLE; |
| 970 | |
| 971 | /* board-specific carddetect setup, if any */ |
| 972 | if (host->platdata && host->platdata->cd_setup) { |
| 973 | ret = host->platdata->cd_setup(mmc, 1); |
| 974 | if (ret) { |
| 975 | dev_err(&pdev->dev, "board CD setup failed\n"); |
| 976 | goto out4; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 977 | } |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 978 | } else { |
| 979 | /* poll the board-specific is-card-in-socket-? method */ |
| 980 | au1xmmc_init_cd_poll_timer(host); |
| 981 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 982 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 983 | tasklet_init(&host->data_task, au1xmmc_tasklet_data, |
| 984 | (unsigned long)host); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 985 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 986 | tasklet_init(&host->finish_task, au1xmmc_tasklet_finish, |
| 987 | (unsigned long)host); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 988 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 989 | #ifdef CONFIG_SOC_AU1200 |
| 990 | ret = au1xmmc_dbdma_init(host); |
| 991 | if (ret) |
| 992 | printk(KERN_INFO DRIVER_NAME ": DBDMA init failed; using PIO\n"); |
| 993 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 994 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 995 | #ifdef CONFIG_LEDS_CLASS |
| 996 | if (host->platdata && host->platdata->led) { |
| 997 | struct led_classdev *led = host->platdata->led; |
| 998 | led->name = mmc_hostname(mmc); |
| 999 | led->brightness = LED_OFF; |
| 1000 | led->default_trigger = mmc_hostname(mmc); |
| 1001 | ret = led_classdev_register(mmc_dev(mmc), led); |
| 1002 | if (ret) |
| 1003 | goto out5; |
| 1004 | } |
| 1005 | #endif |
Pierre Ossman | fe4a3c7 | 2006-11-21 17:54:23 +0100 | [diff] [blame] | 1006 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1007 | au1xmmc_reset_controller(host); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1008 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1009 | ret = mmc_add_host(mmc); |
| 1010 | if (ret) { |
| 1011 | dev_err(&pdev->dev, "cannot add mmc host\n"); |
| 1012 | goto out6; |
| 1013 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1014 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1015 | platform_set_drvdata(pdev, mmc); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1016 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1017 | /* start the carddetect poll timer if necessary */ |
| 1018 | if (!(host->platdata && host->platdata->cd_setup)) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1019 | add_timer(&host->timer); |
| 1020 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1021 | printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X" |
| 1022 | " (mode=%s)\n", pdev->id, host->iobase, |
| 1023 | host->flags & HOST_F_DMA ? "dma" : "pio"); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1024 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1025 | return 0; /* all ok */ |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1026 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1027 | out6: |
| 1028 | #ifdef CONFIG_LEDS_CLASS |
| 1029 | if (host->platdata && host->platdata->led) |
| 1030 | led_classdev_unregister(host->platdata->led); |
| 1031 | out5: |
| 1032 | #endif |
| 1033 | au_writel(0, HOST_ENABLE(host)); |
| 1034 | au_writel(0, HOST_CONFIG(host)); |
| 1035 | au_writel(0, HOST_CONFIG2(host)); |
| 1036 | au_sync(); |
| 1037 | |
| 1038 | #ifdef CONFIG_SOC_AU1200 |
| 1039 | au1xmmc_dbdma_shutdown(host); |
| 1040 | #endif |
| 1041 | |
| 1042 | tasklet_kill(&host->data_task); |
| 1043 | tasklet_kill(&host->finish_task); |
| 1044 | |
| 1045 | if (host->platdata && host->platdata->cd_setup) |
| 1046 | host->platdata->cd_setup(mmc, 0); |
| 1047 | out4: |
| 1048 | free_irq(host->irq, host); |
| 1049 | out3: |
| 1050 | iounmap((void *)host->iobase); |
| 1051 | out2: |
| 1052 | release_resource(host->ioarea); |
| 1053 | kfree(host->ioarea); |
| 1054 | out1: |
| 1055 | mmc_free_host(mmc); |
| 1056 | out0: |
| 1057 | return ret; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1058 | } |
| 1059 | |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1060 | static int __devexit au1xmmc_remove(struct platform_device *pdev) |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1061 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1062 | struct mmc_host *mmc = platform_get_drvdata(pdev); |
| 1063 | struct au1xmmc_host *host; |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1064 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1065 | if (mmc) { |
| 1066 | host = mmc_priv(mmc); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1067 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1068 | mmc_remove_host(mmc); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1069 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1070 | #ifdef CONFIG_LEDS_CLASS |
| 1071 | if (host->platdata && host->platdata->led) |
| 1072 | led_classdev_unregister(host->platdata->led); |
| 1073 | #endif |
| 1074 | |
| 1075 | if (host->platdata && host->platdata->cd_setup) |
| 1076 | host->platdata->cd_setup(mmc, 0); |
| 1077 | else |
| 1078 | del_timer_sync(&host->timer); |
| 1079 | |
| 1080 | au_writel(0, HOST_ENABLE(host)); |
| 1081 | au_writel(0, HOST_CONFIG(host)); |
| 1082 | au_writel(0, HOST_CONFIG2(host)); |
| 1083 | au_sync(); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1084 | |
| 1085 | tasklet_kill(&host->data_task); |
| 1086 | tasklet_kill(&host->finish_task); |
| 1087 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1088 | #ifdef CONFIG_SOC_AU1200 |
| 1089 | au1xmmc_dbdma_shutdown(host); |
| 1090 | #endif |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1091 | au1xmmc_set_power(host, 0); |
| 1092 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1093 | free_irq(host->irq, host); |
| 1094 | iounmap((void *)host->iobase); |
| 1095 | release_resource(host->ioarea); |
| 1096 | kfree(host->ioarea); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1097 | |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1098 | mmc_free_host(mmc); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1099 | } |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1100 | return 0; |
| 1101 | } |
| 1102 | |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1103 | static struct platform_driver au1xmmc_driver = { |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1104 | .probe = au1xmmc_probe, |
| 1105 | .remove = au1xmmc_remove, |
| 1106 | .suspend = NULL, |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1107 | .resume = NULL, |
| 1108 | .driver = { |
| 1109 | .name = DRIVER_NAME, |
Kay Sievers | bc65c72 | 2008-04-15 14:34:28 -0700 | [diff] [blame] | 1110 | .owner = THIS_MODULE, |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1111 | }, |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1112 | }; |
| 1113 | |
| 1114 | static int __init au1xmmc_init(void) |
| 1115 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1116 | #ifdef CONFIG_SOC_AU1200 |
| 1117 | /* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride |
| 1118 | * of 8 bits. And since devices are shared, we need to create |
| 1119 | * our own to avoid freaking out other devices. |
| 1120 | */ |
| 1121 | memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev); |
| 1122 | if (!memid) |
| 1123 | printk(KERN_ERR "au1xmmc: cannot add memory dbdma dev\n"); |
| 1124 | #endif |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1125 | return platform_driver_register(&au1xmmc_driver); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | static void __exit au1xmmc_exit(void) |
| 1129 | { |
Manuel Lauss | c4223c2 | 2008-06-09 08:36:13 +0200 | [diff] [blame] | 1130 | #ifdef CONFIG_SOC_AU1200 |
| 1131 | if (memid) |
| 1132 | au1xxx_ddma_del_device(memid); |
| 1133 | #endif |
Martin Michlmayr | b256f9d | 2006-03-04 23:01:13 +0000 | [diff] [blame] | 1134 | platform_driver_unregister(&au1xmmc_driver); |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1135 | } |
| 1136 | |
| 1137 | module_init(au1xmmc_init); |
| 1138 | module_exit(au1xmmc_exit); |
| 1139 | |
Pete Popov | ba264b3 | 2005-09-21 06:18:27 +0000 | [diff] [blame] | 1140 | MODULE_AUTHOR("Advanced Micro Devices, Inc"); |
| 1141 | MODULE_DESCRIPTION("MMC/SD driver for the Alchemy Au1XXX"); |
| 1142 | MODULE_LICENSE("GPL"); |
Kay Sievers | bc65c72 | 2008-04-15 14:34:28 -0700 | [diff] [blame] | 1143 | MODULE_ALIAS("platform:au1xxx-mmc"); |