2 * linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver
4 * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
12 #include <linux/delay.h>
13 #include <linux/highmem.h>
14 #include <linux/pci.h>
15 #include <linux/dma-mapping.h>
17 #include <linux/mmc/host.h>
19 #include <asm/scatterlist.h>
23 #define DRIVER_NAME "sdhci"
25 #define DBG(f, x...) \
26 pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x)
28 static unsigned int debug_quirks
= 0;
30 #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
31 #define SDHCI_QUIRK_FORCE_DMA (1<<1)
32 /* Controller doesn't like some resets when there is no card inserted. */
33 #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
34 #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
35 #define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4)
36 #define SDHCI_QUIRK_BROKEN_DMA (1<<5)
38 static const struct pci_device_id pci_ids
[] __devinitdata
= {
40 .vendor
= PCI_VENDOR_ID_RICOH
,
41 .device
= PCI_DEVICE_ID_RICOH_R5C822
,
42 .subvendor
= PCI_VENDOR_ID_IBM
,
43 .subdevice
= PCI_ANY_ID
,
44 .driver_data
= SDHCI_QUIRK_CLOCK_BEFORE_RESET
|
45 SDHCI_QUIRK_FORCE_DMA
,
49 .vendor
= PCI_VENDOR_ID_RICOH
,
50 .device
= PCI_DEVICE_ID_RICOH_R5C822
,
51 .subvendor
= PCI_ANY_ID
,
52 .subdevice
= PCI_ANY_ID
,
53 .driver_data
= SDHCI_QUIRK_FORCE_DMA
|
54 SDHCI_QUIRK_NO_CARD_NO_RESET
,
58 .vendor
= PCI_VENDOR_ID_TI
,
59 .device
= PCI_DEVICE_ID_TI_XX21_XX11_SD
,
60 .subvendor
= PCI_ANY_ID
,
61 .subdevice
= PCI_ANY_ID
,
62 .driver_data
= SDHCI_QUIRK_FORCE_DMA
,
66 .vendor
= PCI_VENDOR_ID_ENE
,
67 .device
= PCI_DEVICE_ID_ENE_CB712_SD
,
68 .subvendor
= PCI_ANY_ID
,
69 .subdevice
= PCI_ANY_ID
,
70 .driver_data
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
71 SDHCI_QUIRK_BROKEN_DMA
,
75 .vendor
= PCI_VENDOR_ID_ENE
,
76 .device
= PCI_DEVICE_ID_ENE_CB712_SD_2
,
77 .subvendor
= PCI_ANY_ID
,
78 .subdevice
= PCI_ANY_ID
,
79 .driver_data
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
80 SDHCI_QUIRK_BROKEN_DMA
,
84 .vendor
= PCI_VENDOR_ID_ENE
,
85 .device
= PCI_DEVICE_ID_ENE_CB714_SD
,
86 .subvendor
= PCI_ANY_ID
,
87 .subdevice
= PCI_ANY_ID
,
88 .driver_data
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
89 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS
,
93 .vendor
= PCI_VENDOR_ID_ENE
,
94 .device
= PCI_DEVICE_ID_ENE_CB714_SD_2
,
95 .subvendor
= PCI_ANY_ID
,
96 .subdevice
= PCI_ANY_ID
,
97 .driver_data
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
98 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS
,
101 { /* Generic SD host controller */
102 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI
<< 8), 0xFFFF00)
105 { /* end: all zeroes */ },
108 MODULE_DEVICE_TABLE(pci
, pci_ids
);
110 static void sdhci_prepare_data(struct sdhci_host
*, struct mmc_data
*);
111 static void sdhci_finish_data(struct sdhci_host
*);
113 static void sdhci_send_command(struct sdhci_host
*, struct mmc_command
*);
114 static void sdhci_finish_command(struct sdhci_host
*);
116 static void sdhci_dumpregs(struct sdhci_host
*host
)
118 printk(KERN_DEBUG DRIVER_NAME
": ============== REGISTER DUMP ==============\n");
120 printk(KERN_DEBUG DRIVER_NAME
": Sys addr: 0x%08x | Version: 0x%08x\n",
121 readl(host
->ioaddr
+ SDHCI_DMA_ADDRESS
),
122 readw(host
->ioaddr
+ SDHCI_HOST_VERSION
));
123 printk(KERN_DEBUG DRIVER_NAME
": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
124 readw(host
->ioaddr
+ SDHCI_BLOCK_SIZE
),
125 readw(host
->ioaddr
+ SDHCI_BLOCK_COUNT
));
126 printk(KERN_DEBUG DRIVER_NAME
": Argument: 0x%08x | Trn mode: 0x%08x\n",
127 readl(host
->ioaddr
+ SDHCI_ARGUMENT
),
128 readw(host
->ioaddr
+ SDHCI_TRANSFER_MODE
));
129 printk(KERN_DEBUG DRIVER_NAME
": Present: 0x%08x | Host ctl: 0x%08x\n",
130 readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
),
131 readb(host
->ioaddr
+ SDHCI_HOST_CONTROL
));
132 printk(KERN_DEBUG DRIVER_NAME
": Power: 0x%08x | Blk gap: 0x%08x\n",
133 readb(host
->ioaddr
+ SDHCI_POWER_CONTROL
),
134 readb(host
->ioaddr
+ SDHCI_BLOCK_GAP_CONTROL
));
135 printk(KERN_DEBUG DRIVER_NAME
": Wake-up: 0x%08x | Clock: 0x%08x\n",
136 readb(host
->ioaddr
+ SDHCI_WAKE_UP_CONTROL
),
137 readw(host
->ioaddr
+ SDHCI_CLOCK_CONTROL
));
138 printk(KERN_DEBUG DRIVER_NAME
": Timeout: 0x%08x | Int stat: 0x%08x\n",
139 readb(host
->ioaddr
+ SDHCI_TIMEOUT_CONTROL
),
140 readl(host
->ioaddr
+ SDHCI_INT_STATUS
));
141 printk(KERN_DEBUG DRIVER_NAME
": Int enab: 0x%08x | Sig enab: 0x%08x\n",
142 readl(host
->ioaddr
+ SDHCI_INT_ENABLE
),
143 readl(host
->ioaddr
+ SDHCI_SIGNAL_ENABLE
));
144 printk(KERN_DEBUG DRIVER_NAME
": AC12 err: 0x%08x | Slot int: 0x%08x\n",
145 readw(host
->ioaddr
+ SDHCI_ACMD12_ERR
),
146 readw(host
->ioaddr
+ SDHCI_SLOT_INT_STATUS
));
147 printk(KERN_DEBUG DRIVER_NAME
": Caps: 0x%08x | Max curr: 0x%08x\n",
148 readl(host
->ioaddr
+ SDHCI_CAPABILITIES
),
149 readl(host
->ioaddr
+ SDHCI_MAX_CURRENT
));
151 printk(KERN_DEBUG DRIVER_NAME
": ===========================================\n");
154 /*****************************************************************************\
156 * Low level functions *
158 \*****************************************************************************/
160 static void sdhci_reset(struct sdhci_host
*host
, u8 mask
)
162 unsigned long timeout
;
164 if (host
->chip
->quirks
& SDHCI_QUIRK_NO_CARD_NO_RESET
) {
165 if (!(readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
) &
170 writeb(mask
, host
->ioaddr
+ SDHCI_SOFTWARE_RESET
);
172 if (mask
& SDHCI_RESET_ALL
)
175 /* Wait max 100 ms */
178 /* hw clears the bit when it's done */
179 while (readb(host
->ioaddr
+ SDHCI_SOFTWARE_RESET
) & mask
) {
181 printk(KERN_ERR
"%s: Reset 0x%x never completed.\n",
182 mmc_hostname(host
->mmc
), (int)mask
);
183 sdhci_dumpregs(host
);
191 static void sdhci_init(struct sdhci_host
*host
)
195 sdhci_reset(host
, SDHCI_RESET_ALL
);
197 intmask
= SDHCI_INT_BUS_POWER
| SDHCI_INT_DATA_END_BIT
|
198 SDHCI_INT_DATA_CRC
| SDHCI_INT_DATA_TIMEOUT
| SDHCI_INT_INDEX
|
199 SDHCI_INT_END_BIT
| SDHCI_INT_CRC
| SDHCI_INT_TIMEOUT
|
200 SDHCI_INT_CARD_REMOVE
| SDHCI_INT_CARD_INSERT
|
201 SDHCI_INT_DATA_AVAIL
| SDHCI_INT_SPACE_AVAIL
|
202 SDHCI_INT_DMA_END
| SDHCI_INT_DATA_END
| SDHCI_INT_RESPONSE
;
204 writel(intmask
, host
->ioaddr
+ SDHCI_INT_ENABLE
);
205 writel(intmask
, host
->ioaddr
+ SDHCI_SIGNAL_ENABLE
);
208 static void sdhci_activate_led(struct sdhci_host
*host
)
212 ctrl
= readb(host
->ioaddr
+ SDHCI_HOST_CONTROL
);
213 ctrl
|= SDHCI_CTRL_LED
;
214 writeb(ctrl
, host
->ioaddr
+ SDHCI_HOST_CONTROL
);
217 static void sdhci_deactivate_led(struct sdhci_host
*host
)
221 ctrl
= readb(host
->ioaddr
+ SDHCI_HOST_CONTROL
);
222 ctrl
&= ~SDHCI_CTRL_LED
;
223 writeb(ctrl
, host
->ioaddr
+ SDHCI_HOST_CONTROL
);
226 /*****************************************************************************\
230 \*****************************************************************************/
232 static inline char* sdhci_sg_to_buffer(struct sdhci_host
* host
)
234 return sg_virt(host
->cur_sg
);
237 static inline int sdhci_next_sg(struct sdhci_host
* host
)
240 * Skip to next SG entry.
248 if (host
->num_sg
> 0) {
250 host
->remain
= host
->cur_sg
->length
;
256 static void sdhci_read_block_pio(struct sdhci_host
*host
)
258 int blksize
, chunk_remain
;
263 DBG("PIO reading\n");
265 blksize
= host
->data
->blksz
;
269 buffer
= sdhci_sg_to_buffer(host
) + host
->offset
;
272 if (chunk_remain
== 0) {
273 data
= readl(host
->ioaddr
+ SDHCI_BUFFER
);
274 chunk_remain
= min(blksize
, 4);
277 size
= min(host
->remain
, chunk_remain
);
279 chunk_remain
-= size
;
281 host
->offset
+= size
;
282 host
->remain
-= size
;
285 *buffer
= data
& 0xFF;
291 if (host
->remain
== 0) {
292 if (sdhci_next_sg(host
) == 0) {
293 BUG_ON(blksize
!= 0);
296 buffer
= sdhci_sg_to_buffer(host
);
301 static void sdhci_write_block_pio(struct sdhci_host
*host
)
303 int blksize
, chunk_remain
;
308 DBG("PIO writing\n");
310 blksize
= host
->data
->blksz
;
315 buffer
= sdhci_sg_to_buffer(host
) + host
->offset
;
318 size
= min(host
->remain
, chunk_remain
);
320 chunk_remain
-= size
;
322 host
->offset
+= size
;
323 host
->remain
-= size
;
327 data
|= (u32
)*buffer
<< 24;
332 if (chunk_remain
== 0) {
333 writel(data
, host
->ioaddr
+ SDHCI_BUFFER
);
334 chunk_remain
= min(blksize
, 4);
337 if (host
->remain
== 0) {
338 if (sdhci_next_sg(host
) == 0) {
339 BUG_ON(blksize
!= 0);
342 buffer
= sdhci_sg_to_buffer(host
);
347 static void sdhci_transfer_pio(struct sdhci_host
*host
)
353 if (host
->num_sg
== 0)
356 if (host
->data
->flags
& MMC_DATA_READ
)
357 mask
= SDHCI_DATA_AVAILABLE
;
359 mask
= SDHCI_SPACE_AVAILABLE
;
361 while (readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
) & mask
) {
362 if (host
->data
->flags
& MMC_DATA_READ
)
363 sdhci_read_block_pio(host
);
365 sdhci_write_block_pio(host
);
367 if (host
->num_sg
== 0)
371 DBG("PIO transfer complete.\n");
374 static void sdhci_prepare_data(struct sdhci_host
*host
, struct mmc_data
*data
)
377 unsigned target_timeout
, current_timeout
;
385 BUG_ON(data
->blksz
* data
->blocks
> 524288);
386 BUG_ON(data
->blksz
> host
->mmc
->max_blk_size
);
387 BUG_ON(data
->blocks
> 65535);
390 host
->data_early
= 0;
393 target_timeout
= data
->timeout_ns
/ 1000 +
394 data
->timeout_clks
/ host
->clock
;
397 * Figure out needed cycles.
398 * We do this in steps in order to fit inside a 32 bit int.
399 * The first step is the minimum timeout, which will have a
400 * minimum resolution of 6 bits:
401 * (1) 2^13*1000 > 2^22,
402 * (2) host->timeout_clk < 2^16
407 current_timeout
= (1 << 13) * 1000 / host
->timeout_clk
;
408 while (current_timeout
< target_timeout
) {
410 current_timeout
<<= 1;
416 printk(KERN_WARNING
"%s: Too large timeout requested!\n",
417 mmc_hostname(host
->mmc
));
421 writeb(count
, host
->ioaddr
+ SDHCI_TIMEOUT_CONTROL
);
423 if (host
->flags
& SDHCI_USE_DMA
) {
426 count
= pci_map_sg(host
->chip
->pdev
, data
->sg
, data
->sg_len
,
427 (data
->flags
& MMC_DATA_READ
)?PCI_DMA_FROMDEVICE
:PCI_DMA_TODEVICE
);
430 writel(sg_dma_address(data
->sg
), host
->ioaddr
+ SDHCI_DMA_ADDRESS
);
432 host
->cur_sg
= data
->sg
;
433 host
->num_sg
= data
->sg_len
;
436 host
->remain
= host
->cur_sg
->length
;
439 /* We do not handle DMA boundaries, so set it to max (512 KiB) */
440 writew(SDHCI_MAKE_BLKSZ(7, data
->blksz
),
441 host
->ioaddr
+ SDHCI_BLOCK_SIZE
);
442 writew(data
->blocks
, host
->ioaddr
+ SDHCI_BLOCK_COUNT
);
445 static void sdhci_set_transfer_mode(struct sdhci_host
*host
,
446 struct mmc_data
*data
)
453 WARN_ON(!host
->data
);
455 mode
= SDHCI_TRNS_BLK_CNT_EN
;
456 if (data
->blocks
> 1)
457 mode
|= SDHCI_TRNS_MULTI
;
458 if (data
->flags
& MMC_DATA_READ
)
459 mode
|= SDHCI_TRNS_READ
;
460 if (host
->flags
& SDHCI_USE_DMA
)
461 mode
|= SDHCI_TRNS_DMA
;
463 writew(mode
, host
->ioaddr
+ SDHCI_TRANSFER_MODE
);
466 static void sdhci_finish_data(struct sdhci_host
*host
)
468 struct mmc_data
*data
;
476 if (host
->flags
& SDHCI_USE_DMA
) {
477 pci_unmap_sg(host
->chip
->pdev
, data
->sg
, data
->sg_len
,
478 (data
->flags
& MMC_DATA_READ
)?PCI_DMA_FROMDEVICE
:PCI_DMA_TODEVICE
);
482 * Controller doesn't count down when in single block mode.
484 if (data
->blocks
== 1)
485 blocks
= (data
->error
== 0) ? 0 : 1;
487 blocks
= readw(host
->ioaddr
+ SDHCI_BLOCK_COUNT
);
488 data
->bytes_xfered
= data
->blksz
* (data
->blocks
- blocks
);
490 if (!data
->error
&& blocks
) {
491 printk(KERN_ERR
"%s: Controller signalled completion even "
492 "though there were blocks left.\n",
493 mmc_hostname(host
->mmc
));
499 * The controller needs a reset of internal state machines
500 * upon error conditions.
503 sdhci_reset(host
, SDHCI_RESET_CMD
);
504 sdhci_reset(host
, SDHCI_RESET_DATA
);
507 sdhci_send_command(host
, data
->stop
);
509 tasklet_schedule(&host
->finish_tasklet
);
512 static void sdhci_send_command(struct sdhci_host
*host
, struct mmc_command
*cmd
)
516 unsigned long timeout
;
523 mask
= SDHCI_CMD_INHIBIT
;
524 if ((cmd
->data
!= NULL
) || (cmd
->flags
& MMC_RSP_BUSY
))
525 mask
|= SDHCI_DATA_INHIBIT
;
527 /* We shouldn't wait for data inihibit for stop commands, even
528 though they might use busy signaling */
529 if (host
->mrq
->data
&& (cmd
== host
->mrq
->data
->stop
))
530 mask
&= ~SDHCI_DATA_INHIBIT
;
532 while (readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
) & mask
) {
534 printk(KERN_ERR
"%s: Controller never released "
535 "inhibit bit(s).\n", mmc_hostname(host
->mmc
));
536 sdhci_dumpregs(host
);
538 tasklet_schedule(&host
->finish_tasklet
);
545 mod_timer(&host
->timer
, jiffies
+ 10 * HZ
);
549 sdhci_prepare_data(host
, cmd
->data
);
551 writel(cmd
->arg
, host
->ioaddr
+ SDHCI_ARGUMENT
);
553 sdhci_set_transfer_mode(host
, cmd
->data
);
555 if ((cmd
->flags
& MMC_RSP_136
) && (cmd
->flags
& MMC_RSP_BUSY
)) {
556 printk(KERN_ERR
"%s: Unsupported response type!\n",
557 mmc_hostname(host
->mmc
));
558 cmd
->error
= -EINVAL
;
559 tasklet_schedule(&host
->finish_tasklet
);
563 if (!(cmd
->flags
& MMC_RSP_PRESENT
))
564 flags
= SDHCI_CMD_RESP_NONE
;
565 else if (cmd
->flags
& MMC_RSP_136
)
566 flags
= SDHCI_CMD_RESP_LONG
;
567 else if (cmd
->flags
& MMC_RSP_BUSY
)
568 flags
= SDHCI_CMD_RESP_SHORT_BUSY
;
570 flags
= SDHCI_CMD_RESP_SHORT
;
572 if (cmd
->flags
& MMC_RSP_CRC
)
573 flags
|= SDHCI_CMD_CRC
;
574 if (cmd
->flags
& MMC_RSP_OPCODE
)
575 flags
|= SDHCI_CMD_INDEX
;
577 flags
|= SDHCI_CMD_DATA
;
579 writew(SDHCI_MAKE_CMD(cmd
->opcode
, flags
),
580 host
->ioaddr
+ SDHCI_COMMAND
);
583 static void sdhci_finish_command(struct sdhci_host
*host
)
587 BUG_ON(host
->cmd
== NULL
);
589 if (host
->cmd
->flags
& MMC_RSP_PRESENT
) {
590 if (host
->cmd
->flags
& MMC_RSP_136
) {
591 /* CRC is stripped so we need to do some shifting. */
592 for (i
= 0;i
< 4;i
++) {
593 host
->cmd
->resp
[i
] = readl(host
->ioaddr
+
594 SDHCI_RESPONSE
+ (3-i
)*4) << 8;
596 host
->cmd
->resp
[i
] |=
598 SDHCI_RESPONSE
+ (3-i
)*4-1);
601 host
->cmd
->resp
[0] = readl(host
->ioaddr
+ SDHCI_RESPONSE
);
605 host
->cmd
->error
= 0;
607 if (host
->data
&& host
->data_early
)
608 sdhci_finish_data(host
);
610 if (!host
->cmd
->data
)
611 tasklet_schedule(&host
->finish_tasklet
);
616 static void sdhci_set_clock(struct sdhci_host
*host
, unsigned int clock
)
620 unsigned long timeout
;
622 if (clock
== host
->clock
)
625 writew(0, host
->ioaddr
+ SDHCI_CLOCK_CONTROL
);
630 for (div
= 1;div
< 256;div
*= 2) {
631 if ((host
->max_clk
/ div
) <= clock
)
636 clk
= div
<< SDHCI_DIVIDER_SHIFT
;
637 clk
|= SDHCI_CLOCK_INT_EN
;
638 writew(clk
, host
->ioaddr
+ SDHCI_CLOCK_CONTROL
);
642 while (!((clk
= readw(host
->ioaddr
+ SDHCI_CLOCK_CONTROL
))
643 & SDHCI_CLOCK_INT_STABLE
)) {
645 printk(KERN_ERR
"%s: Internal clock never "
646 "stabilised.\n", mmc_hostname(host
->mmc
));
647 sdhci_dumpregs(host
);
654 clk
|= SDHCI_CLOCK_CARD_EN
;
655 writew(clk
, host
->ioaddr
+ SDHCI_CLOCK_CONTROL
);
661 static void sdhci_set_power(struct sdhci_host
*host
, unsigned short power
)
665 if (host
->power
== power
)
668 if (power
== (unsigned short)-1) {
669 writeb(0, host
->ioaddr
+ SDHCI_POWER_CONTROL
);
674 * Spec says that we should clear the power reg before setting
675 * a new value. Some controllers don't seem to like this though.
677 if (!(host
->chip
->quirks
& SDHCI_QUIRK_SINGLE_POWER_WRITE
))
678 writeb(0, host
->ioaddr
+ SDHCI_POWER_CONTROL
);
680 pwr
= SDHCI_POWER_ON
;
682 switch (1 << power
) {
683 case MMC_VDD_165_195
:
684 pwr
|= SDHCI_POWER_180
;
688 pwr
|= SDHCI_POWER_300
;
692 pwr
|= SDHCI_POWER_330
;
698 writeb(pwr
, host
->ioaddr
+ SDHCI_POWER_CONTROL
);
704 /*****************************************************************************\
708 \*****************************************************************************/
710 static void sdhci_request(struct mmc_host
*mmc
, struct mmc_request
*mrq
)
712 struct sdhci_host
*host
;
715 host
= mmc_priv(mmc
);
717 spin_lock_irqsave(&host
->lock
, flags
);
719 WARN_ON(host
->mrq
!= NULL
);
721 sdhci_activate_led(host
);
725 if (!(readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
) & SDHCI_CARD_PRESENT
)) {
726 host
->mrq
->cmd
->error
= -ENOMEDIUM
;
727 tasklet_schedule(&host
->finish_tasklet
);
729 sdhci_send_command(host
, mrq
->cmd
);
732 spin_unlock_irqrestore(&host
->lock
, flags
);
735 static void sdhci_set_ios(struct mmc_host
*mmc
, struct mmc_ios
*ios
)
737 struct sdhci_host
*host
;
741 host
= mmc_priv(mmc
);
743 spin_lock_irqsave(&host
->lock
, flags
);
746 * Reset the chip on each power off.
747 * Should clear out any weird states.
749 if (ios
->power_mode
== MMC_POWER_OFF
) {
750 writel(0, host
->ioaddr
+ SDHCI_SIGNAL_ENABLE
);
754 sdhci_set_clock(host
, ios
->clock
);
756 if (ios
->power_mode
== MMC_POWER_OFF
)
757 sdhci_set_power(host
, -1);
759 sdhci_set_power(host
, ios
->vdd
);
761 ctrl
= readb(host
->ioaddr
+ SDHCI_HOST_CONTROL
);
763 if (ios
->bus_width
== MMC_BUS_WIDTH_4
)
764 ctrl
|= SDHCI_CTRL_4BITBUS
;
766 ctrl
&= ~SDHCI_CTRL_4BITBUS
;
768 if (ios
->timing
== MMC_TIMING_SD_HS
)
769 ctrl
|= SDHCI_CTRL_HISPD
;
771 ctrl
&= ~SDHCI_CTRL_HISPD
;
773 writeb(ctrl
, host
->ioaddr
+ SDHCI_HOST_CONTROL
);
776 * Some (ENE) controllers go apeshit on some ios operation,
777 * signalling timeout and CRC errors even on CMD0. Resetting
778 * it on each ios seems to solve the problem.
780 if(host
->chip
->quirks
& SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS
)
781 sdhci_reset(host
, SDHCI_RESET_CMD
| SDHCI_RESET_DATA
);
784 spin_unlock_irqrestore(&host
->lock
, flags
);
787 static int sdhci_get_ro(struct mmc_host
*mmc
)
789 struct sdhci_host
*host
;
793 host
= mmc_priv(mmc
);
795 spin_lock_irqsave(&host
->lock
, flags
);
797 present
= readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
);
799 spin_unlock_irqrestore(&host
->lock
, flags
);
801 return !(present
& SDHCI_WRITE_PROTECT
);
804 static void sdhci_enable_sdio_irq(struct mmc_host
*mmc
, int enable
)
806 struct sdhci_host
*host
;
810 host
= mmc_priv(mmc
);
812 spin_lock_irqsave(&host
->lock
, flags
);
814 ier
= readl(host
->ioaddr
+ SDHCI_INT_ENABLE
);
816 ier
&= ~SDHCI_INT_CARD_INT
;
818 ier
|= SDHCI_INT_CARD_INT
;
820 writel(ier
, host
->ioaddr
+ SDHCI_INT_ENABLE
);
821 writel(ier
, host
->ioaddr
+ SDHCI_SIGNAL_ENABLE
);
825 spin_unlock_irqrestore(&host
->lock
, flags
);
828 static const struct mmc_host_ops sdhci_ops
= {
829 .request
= sdhci_request
,
830 .set_ios
= sdhci_set_ios
,
831 .get_ro
= sdhci_get_ro
,
832 .enable_sdio_irq
= sdhci_enable_sdio_irq
,
835 /*****************************************************************************\
839 \*****************************************************************************/
841 static void sdhci_tasklet_card(unsigned long param
)
843 struct sdhci_host
*host
;
846 host
= (struct sdhci_host
*)param
;
848 spin_lock_irqsave(&host
->lock
, flags
);
850 if (!(readl(host
->ioaddr
+ SDHCI_PRESENT_STATE
) & SDHCI_CARD_PRESENT
)) {
852 printk(KERN_ERR
"%s: Card removed during transfer!\n",
853 mmc_hostname(host
->mmc
));
854 printk(KERN_ERR
"%s: Resetting controller.\n",
855 mmc_hostname(host
->mmc
));
857 sdhci_reset(host
, SDHCI_RESET_CMD
);
858 sdhci_reset(host
, SDHCI_RESET_DATA
);
860 host
->mrq
->cmd
->error
= -ENOMEDIUM
;
861 tasklet_schedule(&host
->finish_tasklet
);
865 spin_unlock_irqrestore(&host
->lock
, flags
);
867 mmc_detect_change(host
->mmc
, msecs_to_jiffies(500));
870 static void sdhci_tasklet_finish(unsigned long param
)
872 struct sdhci_host
*host
;
874 struct mmc_request
*mrq
;
876 host
= (struct sdhci_host
*)param
;
878 spin_lock_irqsave(&host
->lock
, flags
);
880 del_timer(&host
->timer
);
885 * The controller needs a reset of internal state machines
886 * upon error conditions.
888 if (mrq
->cmd
->error
||
889 (mrq
->data
&& (mrq
->data
->error
||
890 (mrq
->data
->stop
&& mrq
->data
->stop
->error
)))) {
892 /* Some controllers need this kick or reset won't work here */
893 if (host
->chip
->quirks
& SDHCI_QUIRK_CLOCK_BEFORE_RESET
) {
896 /* This is to force an update */
899 sdhci_set_clock(host
, clock
);
902 /* Spec says we should do both at the same time, but Ricoh
903 controllers do not like that. */
904 sdhci_reset(host
, SDHCI_RESET_CMD
);
905 sdhci_reset(host
, SDHCI_RESET_DATA
);
912 sdhci_deactivate_led(host
);
915 spin_unlock_irqrestore(&host
->lock
, flags
);
917 mmc_request_done(host
->mmc
, mrq
);
920 static void sdhci_timeout_timer(unsigned long data
)
922 struct sdhci_host
*host
;
925 host
= (struct sdhci_host
*)data
;
927 spin_lock_irqsave(&host
->lock
, flags
);
930 printk(KERN_ERR
"%s: Timeout waiting for hardware "
931 "interrupt.\n", mmc_hostname(host
->mmc
));
932 sdhci_dumpregs(host
);
935 host
->data
->error
= -ETIMEDOUT
;
936 sdhci_finish_data(host
);
939 host
->cmd
->error
= -ETIMEDOUT
;
941 host
->mrq
->cmd
->error
= -ETIMEDOUT
;
943 tasklet_schedule(&host
->finish_tasklet
);
948 spin_unlock_irqrestore(&host
->lock
, flags
);
951 /*****************************************************************************\
953 * Interrupt handling *
955 \*****************************************************************************/
957 static void sdhci_cmd_irq(struct sdhci_host
*host
, u32 intmask
)
959 BUG_ON(intmask
== 0);
962 printk(KERN_ERR
"%s: Got command interrupt 0x%08x even "
963 "though no command operation was in progress.\n",
964 mmc_hostname(host
->mmc
), (unsigned)intmask
);
965 sdhci_dumpregs(host
);
969 if (intmask
& SDHCI_INT_TIMEOUT
)
970 host
->cmd
->error
= -ETIMEDOUT
;
971 else if (intmask
& (SDHCI_INT_CRC
| SDHCI_INT_END_BIT
|
973 host
->cmd
->error
= -EILSEQ
;
975 if (host
->cmd
->error
)
976 tasklet_schedule(&host
->finish_tasklet
);
977 else if (intmask
& SDHCI_INT_RESPONSE
)
978 sdhci_finish_command(host
);
981 static void sdhci_data_irq(struct sdhci_host
*host
, u32 intmask
)
983 BUG_ON(intmask
== 0);
987 * A data end interrupt is sent together with the response
988 * for the stop command.
990 if (intmask
& SDHCI_INT_DATA_END
)
993 printk(KERN_ERR
"%s: Got data interrupt 0x%08x even "
994 "though no data operation was in progress.\n",
995 mmc_hostname(host
->mmc
), (unsigned)intmask
);
996 sdhci_dumpregs(host
);
1001 if (intmask
& SDHCI_INT_DATA_TIMEOUT
)
1002 host
->data
->error
= -ETIMEDOUT
;
1003 else if (intmask
& (SDHCI_INT_DATA_CRC
| SDHCI_INT_DATA_END_BIT
))
1004 host
->data
->error
= -EILSEQ
;
1006 if (host
->data
->error
)
1007 sdhci_finish_data(host
);
1009 if (intmask
& (SDHCI_INT_DATA_AVAIL
| SDHCI_INT_SPACE_AVAIL
))
1010 sdhci_transfer_pio(host
);
1013 * We currently don't do anything fancy with DMA
1014 * boundaries, but as we can't disable the feature
1015 * we need to at least restart the transfer.
1017 if (intmask
& SDHCI_INT_DMA_END
)
1018 writel(readl(host
->ioaddr
+ SDHCI_DMA_ADDRESS
),
1019 host
->ioaddr
+ SDHCI_DMA_ADDRESS
);
1021 if (intmask
& SDHCI_INT_DATA_END
) {
1024 * Data managed to finish before the
1025 * command completed. Make sure we do
1026 * things in the proper order.
1028 host
->data_early
= 1;
1030 sdhci_finish_data(host
);
1036 static irqreturn_t
sdhci_irq(int irq
, void *dev_id
)
1039 struct sdhci_host
* host
= dev_id
;
1043 spin_lock(&host
->lock
);
1045 intmask
= readl(host
->ioaddr
+ SDHCI_INT_STATUS
);
1047 if (!intmask
|| intmask
== 0xffffffff) {
1052 DBG("*** %s got interrupt: 0x%08x\n", host
->slot_descr
, intmask
);
1054 if (intmask
& (SDHCI_INT_CARD_INSERT
| SDHCI_INT_CARD_REMOVE
)) {
1055 writel(intmask
& (SDHCI_INT_CARD_INSERT
| SDHCI_INT_CARD_REMOVE
),
1056 host
->ioaddr
+ SDHCI_INT_STATUS
);
1057 tasklet_schedule(&host
->card_tasklet
);
1060 intmask
&= ~(SDHCI_INT_CARD_INSERT
| SDHCI_INT_CARD_REMOVE
);
1062 if (intmask
& SDHCI_INT_CMD_MASK
) {
1063 writel(intmask
& SDHCI_INT_CMD_MASK
,
1064 host
->ioaddr
+ SDHCI_INT_STATUS
);
1065 sdhci_cmd_irq(host
, intmask
& SDHCI_INT_CMD_MASK
);
1068 if (intmask
& SDHCI_INT_DATA_MASK
) {
1069 writel(intmask
& SDHCI_INT_DATA_MASK
,
1070 host
->ioaddr
+ SDHCI_INT_STATUS
);
1071 sdhci_data_irq(host
, intmask
& SDHCI_INT_DATA_MASK
);
1074 intmask
&= ~(SDHCI_INT_CMD_MASK
| SDHCI_INT_DATA_MASK
);
1076 intmask
&= ~SDHCI_INT_ERROR
;
1078 if (intmask
& SDHCI_INT_BUS_POWER
) {
1079 printk(KERN_ERR
"%s: Card is consuming too much power!\n",
1080 mmc_hostname(host
->mmc
));
1081 writel(SDHCI_INT_BUS_POWER
, host
->ioaddr
+ SDHCI_INT_STATUS
);
1084 intmask
&= ~SDHCI_INT_BUS_POWER
;
1086 if (intmask
& SDHCI_INT_CARD_INT
)
1089 intmask
&= ~SDHCI_INT_CARD_INT
;
1092 printk(KERN_ERR
"%s: Unexpected interrupt 0x%08x.\n",
1093 mmc_hostname(host
->mmc
), intmask
);
1094 sdhci_dumpregs(host
);
1096 writel(intmask
, host
->ioaddr
+ SDHCI_INT_STATUS
);
1099 result
= IRQ_HANDLED
;
1103 spin_unlock(&host
->lock
);
1106 * We have to delay this as it calls back into the driver.
1109 mmc_signal_sdio_irq(host
->mmc
);
1114 /*****************************************************************************\
1118 \*****************************************************************************/
1122 static int sdhci_suspend (struct pci_dev
*pdev
, pm_message_t state
)
1124 struct sdhci_chip
*chip
;
1127 chip
= pci_get_drvdata(pdev
);
1131 DBG("Suspending...\n");
1133 for (i
= 0;i
< chip
->num_slots
;i
++) {
1134 if (!chip
->hosts
[i
])
1136 ret
= mmc_suspend_host(chip
->hosts
[i
]->mmc
, state
);
1138 for (i
--;i
>= 0;i
--)
1139 mmc_resume_host(chip
->hosts
[i
]->mmc
);
1144 pci_save_state(pdev
);
1145 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 0);
1147 for (i
= 0;i
< chip
->num_slots
;i
++) {
1148 if (!chip
->hosts
[i
])
1150 free_irq(chip
->hosts
[i
]->irq
, chip
->hosts
[i
]);
1153 pci_disable_device(pdev
);
1154 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
1159 static int sdhci_resume (struct pci_dev
*pdev
)
1161 struct sdhci_chip
*chip
;
1164 chip
= pci_get_drvdata(pdev
);
1168 DBG("Resuming...\n");
1170 pci_set_power_state(pdev
, PCI_D0
);
1171 pci_restore_state(pdev
);
1172 ret
= pci_enable_device(pdev
);
1176 for (i
= 0;i
< chip
->num_slots
;i
++) {
1177 if (!chip
->hosts
[i
])
1179 if (chip
->hosts
[i
]->flags
& SDHCI_USE_DMA
)
1180 pci_set_master(pdev
);
1181 ret
= request_irq(chip
->hosts
[i
]->irq
, sdhci_irq
,
1182 IRQF_SHARED
, chip
->hosts
[i
]->slot_descr
,
1186 sdhci_init(chip
->hosts
[i
]);
1188 ret
= mmc_resume_host(chip
->hosts
[i
]->mmc
);
1196 #else /* CONFIG_PM */
1198 #define sdhci_suspend NULL
1199 #define sdhci_resume NULL
1201 #endif /* CONFIG_PM */
1203 /*****************************************************************************\
1205 * Device probing/removal *
1207 \*****************************************************************************/
1209 static int __devinit
sdhci_probe_slot(struct pci_dev
*pdev
, int slot
)
1212 unsigned int version
;
1213 struct sdhci_chip
*chip
;
1214 struct mmc_host
*mmc
;
1215 struct sdhci_host
*host
;
1220 chip
= pci_get_drvdata(pdev
);
1223 ret
= pci_read_config_byte(pdev
, PCI_SLOT_INFO
, &first_bar
);
1227 first_bar
&= PCI_SLOT_INFO_FIRST_BAR_MASK
;
1229 if (first_bar
> 5) {
1230 printk(KERN_ERR DRIVER_NAME
": Invalid first BAR. Aborting.\n");
1234 if (!(pci_resource_flags(pdev
, first_bar
+ slot
) & IORESOURCE_MEM
)) {
1235 printk(KERN_ERR DRIVER_NAME
": BAR is not iomem. Aborting.\n");
1239 if (pci_resource_len(pdev
, first_bar
+ slot
) != 0x100) {
1240 printk(KERN_ERR DRIVER_NAME
": Invalid iomem size. "
1241 "You may experience problems.\n");
1244 if ((pdev
->class & 0x0000FF) == PCI_SDHCI_IFVENDOR
) {
1245 printk(KERN_ERR DRIVER_NAME
": Vendor specific interface. Aborting.\n");
1249 if ((pdev
->class & 0x0000FF) > PCI_SDHCI_IFVENDOR
) {
1250 printk(KERN_ERR DRIVER_NAME
": Unknown interface. Aborting.\n");
1254 mmc
= mmc_alloc_host(sizeof(struct sdhci_host
), &pdev
->dev
);
1258 host
= mmc_priv(mmc
);
1262 chip
->hosts
[slot
] = host
;
1264 host
->bar
= first_bar
+ slot
;
1266 host
->addr
= pci_resource_start(pdev
, host
->bar
);
1267 host
->irq
= pdev
->irq
;
1269 DBG("slot %d at 0x%08lx, irq %d\n", slot
, host
->addr
, host
->irq
);
1271 snprintf(host
->slot_descr
, 20, "sdhci:slot%d", slot
);
1273 ret
= pci_request_region(pdev
, host
->bar
, host
->slot_descr
);
1277 host
->ioaddr
= ioremap_nocache(host
->addr
,
1278 pci_resource_len(pdev
, host
->bar
));
1279 if (!host
->ioaddr
) {
1284 sdhci_reset(host
, SDHCI_RESET_ALL
);
1286 version
= readw(host
->ioaddr
+ SDHCI_HOST_VERSION
);
1287 version
= (version
& SDHCI_SPEC_VER_MASK
) >> SDHCI_SPEC_VER_SHIFT
;
1289 printk(KERN_ERR
"%s: Unknown controller version (%d). "
1290 "You may experience problems.\n", host
->slot_descr
,
1294 caps
= readl(host
->ioaddr
+ SDHCI_CAPABILITIES
);
1296 if (chip
->quirks
& SDHCI_QUIRK_FORCE_DMA
)
1297 host
->flags
|= SDHCI_USE_DMA
;
1298 else if (!(caps
& SDHCI_CAN_DO_DMA
))
1299 DBG("Controller doesn't have DMA capability\n");
1301 host
->flags
|= SDHCI_USE_DMA
;
1303 if ((chip
->quirks
& SDHCI_QUIRK_BROKEN_DMA
) &&
1304 (host
->flags
& SDHCI_USE_DMA
)) {
1305 DBG("Disabling DMA as it is marked broken");
1306 host
->flags
&= ~SDHCI_USE_DMA
;
1309 if (((pdev
->class & 0x0000FF) != PCI_SDHCI_IFDMA
) &&
1310 (host
->flags
& SDHCI_USE_DMA
)) {
1311 printk(KERN_WARNING
"%s: Will use DMA "
1312 "mode even though HW doesn't fully "
1313 "claim to support it.\n", host
->slot_descr
);
1316 if (host
->flags
& SDHCI_USE_DMA
) {
1317 if (pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) {
1318 printk(KERN_WARNING
"%s: No suitable DMA available. "
1319 "Falling back to PIO.\n", host
->slot_descr
);
1320 host
->flags
&= ~SDHCI_USE_DMA
;
1324 if (host
->flags
& SDHCI_USE_DMA
)
1325 pci_set_master(pdev
);
1326 else /* XXX: Hack to get MMC layer to avoid highmem */
1330 (caps
& SDHCI_CLOCK_BASE_MASK
) >> SDHCI_CLOCK_BASE_SHIFT
;
1331 if (host
->max_clk
== 0) {
1332 printk(KERN_ERR
"%s: Hardware doesn't specify base clock "
1333 "frequency.\n", host
->slot_descr
);
1337 host
->max_clk
*= 1000000;
1340 (caps
& SDHCI_TIMEOUT_CLK_MASK
) >> SDHCI_TIMEOUT_CLK_SHIFT
;
1341 if (host
->timeout_clk
== 0) {
1342 printk(KERN_ERR
"%s: Hardware doesn't specify timeout clock "
1343 "frequency.\n", host
->slot_descr
);
1347 if (caps
& SDHCI_TIMEOUT_CLK_UNIT
)
1348 host
->timeout_clk
*= 1000;
1351 * Set host parameters.
1353 mmc
->ops
= &sdhci_ops
;
1354 mmc
->f_min
= host
->max_clk
/ 256;
1355 mmc
->f_max
= host
->max_clk
;
1356 mmc
->caps
= MMC_CAP_4_BIT_DATA
| MMC_CAP_MULTIWRITE
| MMC_CAP_SDIO_IRQ
;
1358 if (caps
& SDHCI_CAN_DO_HISPD
)
1359 mmc
->caps
|= MMC_CAP_SD_HIGHSPEED
;
1362 if (caps
& SDHCI_CAN_VDD_330
)
1363 mmc
->ocr_avail
|= MMC_VDD_32_33
|MMC_VDD_33_34
;
1364 if (caps
& SDHCI_CAN_VDD_300
)
1365 mmc
->ocr_avail
|= MMC_VDD_29_30
|MMC_VDD_30_31
;
1366 if (caps
& SDHCI_CAN_VDD_180
)
1367 mmc
->ocr_avail
|= MMC_VDD_165_195
;
1369 if (mmc
->ocr_avail
== 0) {
1370 printk(KERN_ERR
"%s: Hardware doesn't report any "
1371 "support voltages.\n", host
->slot_descr
);
1376 spin_lock_init(&host
->lock
);
1379 * Maximum number of segments. Hardware cannot do scatter lists.
1381 if (host
->flags
& SDHCI_USE_DMA
)
1382 mmc
->max_hw_segs
= 1;
1384 mmc
->max_hw_segs
= 16;
1385 mmc
->max_phys_segs
= 16;
1388 * Maximum number of sectors in one transfer. Limited by DMA boundary
1391 mmc
->max_req_size
= 524288;
1394 * Maximum segment size. Could be one segment with the maximum number
1397 mmc
->max_seg_size
= mmc
->max_req_size
;
1400 * Maximum block size. This varies from controller to controller and
1401 * is specified in the capabilities register.
1403 mmc
->max_blk_size
= (caps
& SDHCI_MAX_BLOCK_MASK
) >> SDHCI_MAX_BLOCK_SHIFT
;
1404 if (mmc
->max_blk_size
>= 3) {
1405 printk(KERN_WARNING
"%s: Invalid maximum block size, assuming 512\n",
1407 mmc
->max_blk_size
= 512;
1409 mmc
->max_blk_size
= 512 << mmc
->max_blk_size
;
1412 * Maximum block count.
1414 mmc
->max_blk_count
= 65535;
1419 tasklet_init(&host
->card_tasklet
,
1420 sdhci_tasklet_card
, (unsigned long)host
);
1421 tasklet_init(&host
->finish_tasklet
,
1422 sdhci_tasklet_finish
, (unsigned long)host
);
1424 setup_timer(&host
->timer
, sdhci_timeout_timer
, (unsigned long)host
);
1426 ret
= request_irq(host
->irq
, sdhci_irq
, IRQF_SHARED
,
1427 host
->slot_descr
, host
);
1433 #ifdef CONFIG_MMC_DEBUG
1434 sdhci_dumpregs(host
);
1441 printk(KERN_INFO
"%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc
),
1442 host
->addr
, host
->irq
,
1443 (host
->flags
& SDHCI_USE_DMA
)?"DMA":"PIO");
1448 tasklet_kill(&host
->card_tasklet
);
1449 tasklet_kill(&host
->finish_tasklet
);
1451 iounmap(host
->ioaddr
);
1453 pci_release_region(pdev
, host
->bar
);
1460 static void sdhci_remove_slot(struct pci_dev
*pdev
, int slot
)
1462 struct sdhci_chip
*chip
;
1463 struct mmc_host
*mmc
;
1464 struct sdhci_host
*host
;
1466 chip
= pci_get_drvdata(pdev
);
1467 host
= chip
->hosts
[slot
];
1470 chip
->hosts
[slot
] = NULL
;
1472 mmc_remove_host(mmc
);
1474 sdhci_reset(host
, SDHCI_RESET_ALL
);
1476 free_irq(host
->irq
, host
);
1478 del_timer_sync(&host
->timer
);
1480 tasklet_kill(&host
->card_tasklet
);
1481 tasklet_kill(&host
->finish_tasklet
);
1483 iounmap(host
->ioaddr
);
1485 pci_release_region(pdev
, host
->bar
);
1490 static int __devinit
sdhci_probe(struct pci_dev
*pdev
,
1491 const struct pci_device_id
*ent
)
1495 struct sdhci_chip
*chip
;
1497 BUG_ON(pdev
== NULL
);
1498 BUG_ON(ent
== NULL
);
1500 pci_read_config_byte(pdev
, PCI_CLASS_REVISION
, &rev
);
1502 printk(KERN_INFO DRIVER_NAME
1503 ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n",
1504 pci_name(pdev
), (int)pdev
->vendor
, (int)pdev
->device
,
1507 ret
= pci_read_config_byte(pdev
, PCI_SLOT_INFO
, &slots
);
1511 slots
= PCI_SLOT_INFO_SLOTS(slots
) + 1;
1512 DBG("found %d slot(s)\n", slots
);
1516 ret
= pci_enable_device(pdev
);
1520 chip
= kzalloc(sizeof(struct sdhci_chip
) +
1521 sizeof(struct sdhci_host
*) * slots
, GFP_KERNEL
);
1528 chip
->quirks
= ent
->driver_data
;
1531 chip
->quirks
= debug_quirks
;
1533 chip
->num_slots
= slots
;
1534 pci_set_drvdata(pdev
, chip
);
1536 for (i
= 0;i
< slots
;i
++) {
1537 ret
= sdhci_probe_slot(pdev
, i
);
1539 for (i
--;i
>= 0;i
--)
1540 sdhci_remove_slot(pdev
, i
);
1548 pci_set_drvdata(pdev
, NULL
);
1552 pci_disable_device(pdev
);
1556 static void __devexit
sdhci_remove(struct pci_dev
*pdev
)
1559 struct sdhci_chip
*chip
;
1561 chip
= pci_get_drvdata(pdev
);
1564 for (i
= 0;i
< chip
->num_slots
;i
++)
1565 sdhci_remove_slot(pdev
, i
);
1567 pci_set_drvdata(pdev
, NULL
);
1572 pci_disable_device(pdev
);
1575 static struct pci_driver sdhci_driver
= {
1576 .name
= DRIVER_NAME
,
1577 .id_table
= pci_ids
,
1578 .probe
= sdhci_probe
,
1579 .remove
= __devexit_p(sdhci_remove
),
1580 .suspend
= sdhci_suspend
,
1581 .resume
= sdhci_resume
,
1584 /*****************************************************************************\
1586 * Driver init/exit *
1588 \*****************************************************************************/
1590 static int __init
sdhci_drv_init(void)
1592 printk(KERN_INFO DRIVER_NAME
1593 ": Secure Digital Host Controller Interface driver\n");
1594 printk(KERN_INFO DRIVER_NAME
": Copyright(c) Pierre Ossman\n");
1596 return pci_register_driver(&sdhci_driver
);
1599 static void __exit
sdhci_drv_exit(void)
1603 pci_unregister_driver(&sdhci_driver
);
1606 module_init(sdhci_drv_init
);
1607 module_exit(sdhci_drv_exit
);
1609 module_param(debug_quirks
, uint
, 0444);
1611 MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
1612 MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
1613 MODULE_LICENSE("GPL");
1615 MODULE_PARM_DESC(debug_quirks
, "Force certain quirks.");