xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Merge branch 'origin' into for-linus

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Conflicts:
	MAINTAINERS
This commit is contained in:
Russell King
2009-09-24 21:22:33 +01:00
parent ae19ffbadc 94e0fb086f
commit baea7b946f
3418 changed files with 295792 additions and 97045 deletions
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2
drivers/mmc/card/block.c
View File

@@ -130,7 +130,7 @@ mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
static struct block_device_operations mmc_bdops = {
static const struct block_device_operations mmc_bdops = {
.open = mmc_blk_open,
.release = mmc_blk_release,
.getgeo = mmc_blk_getgeo,

318
drivers/mmc/core/core.c
View File

@@ -343,6 +343,101 @@ unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz)
}
EXPORT_SYMBOL(mmc_align_data_size);
/**
* mmc_host_enable - enable a host.
* @host: mmc host to enable
*
* Hosts that support power saving can use the 'enable' and 'disable'
* methods to exit and enter power saving states. For more information
* see comments for struct mmc_host_ops.
*/
int mmc_host_enable(struct mmc_host *host)
{
if (!(host->caps & MMC_CAP_DISABLE))
return 0;
if (host->en_dis_recurs)
return 0;
if (host->nesting_cnt++)
return 0;
cancel_delayed_work_sync(&host->disable);
if (host->enabled)
return 0;
if (host->ops->enable) {
int err;
host->en_dis_recurs = 1;
err = host->ops->enable(host);
host->en_dis_recurs = 0;
if (err) {
pr_debug("%s: enable error %d\n",
mmc_hostname(host), err);
return err;
}
}
host->enabled = 1;
return 0;
}
EXPORT_SYMBOL(mmc_host_enable);
static int mmc_host_do_disable(struct mmc_host *host, int lazy)
{
if (host->ops->disable) {
int err;
host->en_dis_recurs = 1;
err = host->ops->disable(host, lazy);
host->en_dis_recurs = 0;
if (err < 0) {
pr_debug("%s: disable error %d\n",
mmc_hostname(host), err);
return err;
}
if (err > 0) {
unsigned long delay = msecs_to_jiffies(err);
mmc_schedule_delayed_work(&host->disable, delay);
}
}
host->enabled = 0;
return 0;
}
/**
* mmc_host_disable - disable a host.
* @host: mmc host to disable
*
* Hosts that support power saving can use the 'enable' and 'disable'
* methods to exit and enter power saving states. For more information
* see comments for struct mmc_host_ops.
*/
int mmc_host_disable(struct mmc_host *host)
{
int err;
if (!(host->caps & MMC_CAP_DISABLE))
return 0;
if (host->en_dis_recurs)
return 0;
if (--host->nesting_cnt)
return 0;
if (!host->enabled)
return 0;
err = mmc_host_do_disable(host, 0);
return err;
}
EXPORT_SYMBOL(mmc_host_disable);
/**
* __mmc_claim_host - exclusively claim a host
* @host: mmc host to claim
@@ -366,24 +461,110 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
while (1) {
set_current_state(TASK_UNINTERRUPTIBLE);
stop = abort ? atomic_read(abort) : 0;
if (stop || !host->claimed)
if (stop || !host->claimed || host->claimer == current)
break;
spin_unlock_irqrestore(&host->lock, flags);
schedule();
spin_lock_irqsave(&host->lock, flags);
}
set_current_state(TASK_RUNNING);
if (!stop)
if (!stop) {
host->claimed = 1;
else
host->claimer = current;
host->claim_cnt += 1;
} else
wake_up(&host->wq);
spin_unlock_irqrestore(&host->lock, flags);
remove_wait_queue(&host->wq, &wait);
if (!stop)
mmc_host_enable(host);
return stop;
}
EXPORT_SYMBOL(__mmc_claim_host);
/**
* mmc_try_claim_host - try exclusively to claim a host
* @host: mmc host to claim
*
* Returns %1 if the host is claimed, %0 otherwise.
*/
int mmc_try_claim_host(struct mmc_host *host)
{
int claimed_host = 0;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (!host->claimed || host->claimer == current) {
host->claimed = 1;
host->claimer = current;
host->claim_cnt += 1;
claimed_host = 1;
}
spin_unlock_irqrestore(&host->lock, flags);
return claimed_host;
}
EXPORT_SYMBOL(mmc_try_claim_host);
static void mmc_do_release_host(struct mmc_host *host)
{
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (--host->claim_cnt) {
/* Release for nested claim */
spin_unlock_irqrestore(&host->lock, flags);
} else {
host->claimed = 0;
host->claimer = NULL;
spin_unlock_irqrestore(&host->lock, flags);
wake_up(&host->wq);
}
}
void mmc_host_deeper_disable(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, disable.work);
/* If the host is claimed then we do not want to disable it anymore */
if (!mmc_try_claim_host(host))
return;
mmc_host_do_disable(host, 1);
mmc_do_release_host(host);
}
/**
* mmc_host_lazy_disable - lazily disable a host.
* @host: mmc host to disable
*
* Hosts that support power saving can use the 'enable' and 'disable'
* methods to exit and enter power saving states. For more information
* see comments for struct mmc_host_ops.
*/
int mmc_host_lazy_disable(struct mmc_host *host)
{
if (!(host->caps & MMC_CAP_DISABLE))
return 0;
if (host->en_dis_recurs)
return 0;
if (--host->nesting_cnt)
return 0;
if (!host->enabled)
return 0;
if (host->disable_delay) {
mmc_schedule_delayed_work(&host->disable,
msecs_to_jiffies(host->disable_delay));
return 0;
} else
return mmc_host_do_disable(host, 1);
}
EXPORT_SYMBOL(mmc_host_lazy_disable);
/**
* mmc_release_host - release a host
* @host: mmc host to release
@@ -393,15 +574,11 @@ EXPORT_SYMBOL(__mmc_claim_host);
*/
void mmc_release_host(struct mmc_host *host)
{
unsigned long flags;
WARN_ON(!host->claimed);
spin_lock_irqsave(&host->lock, flags);
host->claimed = 0;
spin_unlock_irqrestore(&host->lock, flags);
mmc_host_lazy_disable(host);
wake_up(&host->wq);
mmc_do_release_host(host);
}
EXPORT_SYMBOL(mmc_release_host);
@@ -687,7 +864,13 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
*/
static void mmc_power_up(struct mmc_host *host)
{
int bit = fls(host->ocr_avail) - 1;
int bit;
/* If ocr is set, we use it */
if (host->ocr)
bit = ffs(host->ocr) - 1;
else
bit = fls(host->ocr_avail) - 1;
host->ios.vdd = bit;
if (mmc_host_is_spi(host)) {
@@ -947,6 +1130,8 @@ void mmc_stop_host(struct mmc_host *host)
spin_unlock_irqrestore(&host->lock, flags);
#endif
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
@@ -958,6 +1143,8 @@ void mmc_stop_host(struct mmc_host *host)
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
mmc_bus_put(host);
return;
}
mmc_bus_put(host);
@@ -966,6 +1153,80 @@ void mmc_stop_host(struct mmc_host *host)
mmc_power_off(host);
}
void mmc_power_save_host(struct mmc_host *host)
{
mmc_bus_get(host);
if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) {
mmc_bus_put(host);
return;
}
if (host->bus_ops->power_save)
host->bus_ops->power_save(host);
mmc_bus_put(host);
mmc_power_off(host);
}
EXPORT_SYMBOL(mmc_power_save_host);
void mmc_power_restore_host(struct mmc_host *host)
{
mmc_bus_get(host);
if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) {
mmc_bus_put(host);
return;
}
mmc_power_up(host);
host->bus_ops->power_restore(host);
mmc_bus_put(host);
}
EXPORT_SYMBOL(mmc_power_restore_host);
int mmc_card_awake(struct mmc_host *host)
{
int err = -ENOSYS;
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead && host->bus_ops->awake)
err = host->bus_ops->awake(host);
mmc_bus_put(host);
return err;
}
EXPORT_SYMBOL(mmc_card_awake);
int mmc_card_sleep(struct mmc_host *host)
{
int err = -ENOSYS;
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead && host->bus_ops->awake)
err = host->bus_ops->sleep(host);
mmc_bus_put(host);
return err;
}
EXPORT_SYMBOL(mmc_card_sleep);
int mmc_card_can_sleep(struct mmc_host *host)
{
struct mmc_card *card = host->card;
if (card && mmc_card_mmc(card) && card->ext_csd.rev >= 3)
return 1;
return 0;
}
EXPORT_SYMBOL(mmc_card_can_sleep);
#ifdef CONFIG_PM
/**
@@ -975,27 +1236,36 @@ void mmc_stop_host(struct mmc_host *host)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
int err = 0;
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend)
host->bus_ops->suspend(host);
if (!host->bus_ops->resume) {
err = host->bus_ops->suspend(host);
if (err == -ENOSYS || !host->bus_ops->resume) {
/*
* We simply "remove" the card in this case.
* It will be redetected on resume.
*/
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
err = 0;
}
}
mmc_bus_put(host);
mmc_power_off(host);
if (!err)
mmc_power_off(host);
return 0;
return err;
}
EXPORT_SYMBOL(mmc_suspend_host);
@@ -1006,12 +1276,26 @@ EXPORT_SYMBOL(mmc_suspend_host);
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
BUG_ON(!host->bus_ops->resume);
host->bus_ops->resume(host);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
/* no need to bother upper layers */
err = 0;
}
}
mmc_bus_put(host);
@@ -1021,7 +1305,7 @@ int mmc_resume_host(struct mmc_host *host)
*/
mmc_detect_change(host, 1);
return 0;
return err;
}
EXPORT_SYMBOL(mmc_resume_host);

8
drivers/mmc/core/core.h
View File

@@ -16,10 +16,14 @@
#define MMC_CMD_RETRIES 3
struct mmc_bus_ops {
int (*awake)(struct mmc_host *);
int (*sleep)(struct mmc_host *);
void (*remove)(struct mmc_host *);
void (*detect)(struct mmc_host *);
void (*suspend)(struct mmc_host *);
void (*resume)(struct mmc_host *);
int (*suspend)(struct mmc_host *);
int (*resume)(struct mmc_host *);
void (*power_save)(struct mmc_host *);
void (*power_restore)(struct mmc_host *);
};
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);

1
drivers/mmc/core/host.c
View File

@@ -83,6 +83,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
spin_lock_init(&host->lock);
init_waitqueue_head(&host->wq);
INIT_DELAYED_WORK(&host->detect, mmc_rescan);
INIT_DELAYED_WORK_DEFERRABLE(&host->disable, mmc_host_deeper_disable);
/*
* By default, hosts do not support SGIO or large requests.

2
drivers/mmc/core/host.h
View File

@@ -14,5 +14,7 @@
int mmc_register_host_class(void);
void mmc_unregister_host_class(void);
void mmc_host_deeper_disable(struct work_struct *work);
#endif

155
drivers/mmc/core/mmc.c
View File

@@ -160,7 +160,6 @@ static int mmc_read_ext_csd(struct mmc_card *card)
{
int err;
u8 *ext_csd;
unsigned int ext_csd_struct;
BUG_ON(!card);
@@ -180,11 +179,11 @@ static int mmc_read_ext_csd(struct mmc_card *card)
err = mmc_send_ext_csd(card, ext_csd);
if (err) {
/*
* We all hosts that cannot perform the command
* to fail more gracefully
*/
if (err != -EINVAL)
/* If the host or the card can't do the switch,
* fail more gracefully. */
if ((err != -EINVAL)
&& (err != -ENOSYS)
&& (err != -EFAULT))
goto out;
/*
@@ -207,16 +206,16 @@ static int mmc_read_ext_csd(struct mmc_card *card)
goto out;
}
ext_csd_struct = ext_csd[EXT_CSD_REV];
if (ext_csd_struct > 3) {
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 3) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
ext_csd_struct);
card->ext_csd.rev);
err = -EINVAL;
goto out;
}
if (ext_csd_struct >= 2) {
if (card->ext_csd.rev >= 2) {
card->ext_csd.sectors =
ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
@@ -241,6 +240,15 @@ static int mmc_read_ext_csd(struct mmc_card *card)
goto out;
}
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
/* Sleep / awake timeout in 100ns units */
if (sa_shift > 0 && sa_shift <= 0x17)
card->ext_csd.sa_timeout =
1 << ext_csd[EXT_CSD_S_A_TIMEOUT];
}
out:
kfree(ext_csd);
@@ -408,12 +416,17 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err)
if (err && err != -EBADMSG)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
@@ -448,10 +461,17 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, ext_csd_bit);
if (err)
if (err && err != -EBADMSG)
goto free_card;
mmc_set_bus_width(card->host, bus_width);
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width);
err = 0;
} else {
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
@@ -507,12 +527,10 @@ static void mmc_detect(struct mmc_host *host)
}
}
#ifdef CONFIG_MMC_UNSAFE_RESUME
/*
* Suspend callback from host.
*/
static void mmc_suspend(struct mmc_host *host)
static int mmc_suspend(struct mmc_host *host)
{
BUG_ON(!host);
BUG_ON(!host->card);
@@ -522,6 +540,8 @@ static void mmc_suspend(struct mmc_host *host)
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return 0;
}
/*
@@ -530,7 +550,7 @@ static void mmc_suspend(struct mmc_host *host)
* This function tries to determine if the same card is still present
* and, if so, restore all state to it.
*/
static void mmc_resume(struct mmc_host *host)
static int mmc_resume(struct mmc_host *host)
{
int err;
@@ -541,30 +561,99 @@ static void mmc_resume(struct mmc_host *host)
err = mmc_init_card(host, host->ocr, host->card);
mmc_release_host(host);
if (err) {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
return err;
}
#else
static void mmc_power_restore(struct mmc_host *host)
{
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_claim_host(host);
mmc_init_card(host, host->ocr, host->card);
mmc_release_host(host);
}
#define mmc_suspend NULL
#define mmc_resume NULL
static int mmc_sleep(struct mmc_host *host)
{
struct mmc_card *card = host->card;
int err = -ENOSYS;
#endif
if (card && card->ext_csd.rev >= 3) {
err = mmc_card_sleepawake(host, 1);
if (err < 0)
pr_debug("%s: Error %d while putting card into sleep",
mmc_hostname(host), err);
}
return err;
}
static int mmc_awake(struct mmc_host *host)
{
struct mmc_card *card = host->card;
int err = -ENOSYS;
if (card && card->ext_csd.rev >= 3) {
err = mmc_card_sleepawake(host, 0);
if (err < 0)
pr_debug("%s: Error %d while awaking sleeping card",
mmc_hostname(host), err);
}
return err;
}
#ifdef CONFIG_MMC_UNSAFE_RESUME
static const struct mmc_bus_ops mmc_ops = {
.awake = mmc_awake,
.sleep = mmc_sleep,
.remove = mmc_remove,
.detect = mmc_detect,
.suspend = mmc_suspend,
.resume = mmc_resume,
.power_restore = mmc_power_restore,
};
static void mmc_attach_bus_ops(struct mmc_host *host)
{
mmc_attach_bus(host, &mmc_ops);
}
#else
static const struct mmc_bus_ops mmc_ops = {
.awake = mmc_awake,
.sleep = mmc_sleep,
.remove = mmc_remove,
.detect = mmc_detect,
.suspend = NULL,
.resume = NULL,
.power_restore = mmc_power_restore,
};
static const struct mmc_bus_ops mmc_ops_unsafe = {
.awake = mmc_awake,
.sleep = mmc_sleep,
.remove = mmc_remove,
.detect = mmc_detect,
.suspend = mmc_suspend,
.resume = mmc_resume,
.power_restore = mmc_power_restore,
};
static void mmc_attach_bus_ops(struct mmc_host *host)
{
const struct mmc_bus_ops *bus_ops;
if (host->caps & MMC_CAP_NONREMOVABLE)
bus_ops = &mmc_ops_unsafe;
else
bus_ops = &mmc_ops;
mmc_attach_bus(host, bus_ops);
}
#endif
/*
* Starting point for MMC card init.
*/
@@ -575,7 +664,7 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
BUG_ON(!host);
WARN_ON(!host->claimed);
mmc_attach_bus(host, &mmc_ops);
mmc_attach_bus_ops(host);
/*
* We need to get OCR a different way for SPI.

59
drivers/mmc/core/mmc_ops.c
View File

@@ -57,6 +57,42 @@ int mmc_deselect_cards(struct mmc_host *host)
return _mmc_select_card(host, NULL);
}
int mmc_card_sleepawake(struct mmc_host *host, int sleep)
{
struct mmc_command cmd;
struct mmc_card *card = host->card;
int err;
if (sleep)
mmc_deselect_cards(host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SLEEP_AWAKE;
cmd.arg = card->rca << 16;
if (sleep)
cmd.arg |= 1 << 15;
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
err = mmc_wait_for_cmd(host, &cmd, 0);
if (err)
return err;
/*
* If the host does not wait while the card signals busy, then we will
* will have to wait the sleep/awake timeout. Note, we cannot use the
* SEND_STATUS command to poll the status because that command (and most
* others) is invalid while the card sleeps.
*/
if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000));
if (!sleep)
err = mmc_select_card(card);
return err;
}
int mmc_go_idle(struct mmc_host *host)
{
int err;
@@ -354,6 +390,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
{
int err;
struct mmc_command cmd;
u32 status;
BUG_ON(!card);
BUG_ON(!card->host);
@@ -371,6 +408,28 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
if (err)
return err;
/* Must check status to be sure of no errors */
do {
err = mmc_send_status(card, &status);
if (err)
return err;
if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY)
break;
if (mmc_host_is_spi(card->host))
break;
} while (R1_CURRENT_STATE(status) == 7);
if (mmc_host_is_spi(card->host)) {
if (status & R1_SPI_ILLEGAL_COMMAND)
return -EBADMSG;
} else {
if (status & 0xFDFFA000)
printk(KERN_WARNING "%s: unexpected status %#x after "
"switch", mmc_hostname(card->host), status);
if (status & R1_SWITCH_ERROR)
return -EBADMSG;
}
return 0;
}

1
drivers/mmc/core/mmc_ops.h
View File

@@ -25,6 +25,7 @@ int mmc_send_status(struct mmc_card *card, u32 *status);
int mmc_send_cid(struct mmc_host *host, u32 *cid);
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
int mmc_card_sleepawake(struct mmc_host *host, int sleep);
#endif

79
drivers/mmc/core/sd.c
View File

@@ -210,11 +210,11 @@ static int mmc_read_switch(struct mmc_card *card)
err = mmc_sd_switch(card, 0, 0, 1, status);
if (err) {
/*
* We all hosts that cannot perform the command
* to fail more gracefully
*/
if (err != -EINVAL)
/* If the host or the card can't do the switch,
* fail more gracefully. */
if ((err != -EINVAL)
&& (err != -ENOSYS)
&& (err != -EFAULT))
goto out;
printk(KERN_WARNING "%s: problem reading switch "
@@ -561,12 +561,10 @@ static void mmc_sd_detect(struct mmc_host *host)
}
}
#ifdef CONFIG_MMC_UNSAFE_RESUME
/*
* Suspend callback from host.
*/
static void mmc_sd_suspend(struct mmc_host *host)
static int mmc_sd_suspend(struct mmc_host *host)
{
BUG_ON(!host);
BUG_ON(!host->card);
@@ -576,6 +574,8 @@ static void mmc_sd_suspend(struct mmc_host *host)
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return 0;
}
/*
@@ -584,7 +584,7 @@ static void mmc_sd_suspend(struct mmc_host *host)
* This function tries to determine if the same card is still present
* and, if so, restore all state to it.
*/
static void mmc_sd_resume(struct mmc_host *host)
static int mmc_sd_resume(struct mmc_host *host)
{
int err;
@@ -595,30 +595,63 @@ static void mmc_sd_resume(struct mmc_host *host)
err = mmc_sd_init_card(host, host->ocr, host->card);
mmc_release_host(host);
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
return err;
}
#else
static void mmc_sd_power_restore(struct mmc_host *host)
{
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_claim_host(host);
mmc_sd_init_card(host, host->ocr, host->card);
mmc_release_host(host);
}
#define mmc_sd_suspend NULL
#define mmc_sd_resume NULL
#endif
#ifdef CONFIG_MMC_UNSAFE_RESUME
static const struct mmc_bus_ops mmc_sd_ops = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
.suspend = mmc_sd_suspend,
.resume = mmc_sd_resume,
.power_restore = mmc_sd_power_restore,
};
static void mmc_sd_attach_bus_ops(struct mmc_host *host)
{
mmc_attach_bus(host, &mmc_sd_ops);
}
#else
static const struct mmc_bus_ops mmc_sd_ops = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
.suspend = NULL,
.resume = NULL,
.power_restore = mmc_sd_power_restore,
};
static const struct mmc_bus_ops mmc_sd_ops_unsafe = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
.suspend = mmc_sd_suspend,
.resume = mmc_sd_resume,
.power_restore = mmc_sd_power_restore,
};
static void mmc_sd_attach_bus_ops(struct mmc_host *host)
{
const struct mmc_bus_ops *bus_ops;
if (host->caps & MMC_CAP_NONREMOVABLE)
bus_ops = &mmc_sd_ops_unsafe;
else
bus_ops = &mmc_sd_ops;
mmc_attach_bus(host, bus_ops);
}
#endif
/*
* Starting point for SD card init.
*/
@@ -629,7 +662,7 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr)
BUG_ON(!host);
WARN_ON(!host->claimed);
mmc_attach_bus(host, &mmc_sd_ops);
mmc_sd_attach_bus_ops(host);
/*
* We need to get OCR a different way for SPI.

316
drivers/mmc/core/sdio.c
View File

@@ -164,6 +164,29 @@ static int sdio_enable_wide(struct mmc_card *card)
return 0;
}
/*
* If desired, disconnect the pull-up resistor on CD/DAT[3] (pin 1)
* of the card. This may be required on certain setups of boards,
* controllers and embedded sdio device which do not need the card's
* pull-up. As a result, card detection is disabled and power is saved.
*/
static int sdio_disable_cd(struct mmc_card *card)
{
int ret;
u8 ctrl;
if (!card->cccr.disable_cd)
return 0;
ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
if (ret)
return ret;
ctrl |= SDIO_BUS_CD_DISABLE;
return mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
}
/*
* Test if the card supports high-speed mode and, if so, switch to it.
*/
@@ -194,6 +217,135 @@ static int sdio_enable_hs(struct mmc_card *card)
return 0;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Inform the card of the voltage
*/
err = mmc_send_io_op_cond(host, host->ocr, &ocr);
if (err)
goto err;
/*
* For SPI, enable CRC as appropriate.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_set_crc(host, use_spi_crc);
if (err)
goto err;
}
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, NULL);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_SDIO;
/*
* For native busses: set card RCA and quit open drain mode.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_send_relative_addr(host, &card->rca);
if (err)
goto remove;
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto remove;
}
/*
* Read the common registers.
*/
err = sdio_read_cccr(card);
if (err)
goto remove;
/*
* Read the common CIS tuples.
*/
err = sdio_read_common_cis(card);
if (err)
goto remove;
if (oldcard) {
int same = (card->cis.vendor == oldcard->cis.vendor &&
card->cis.device == oldcard->cis.device);
mmc_remove_card(card);
if (!same) {
err = -ENOENT;
goto err;
}
card = oldcard;
return 0;
}
/*
* Switch to high-speed (if supported).
*/
err = sdio_enable_hs(card);
if (err)
goto remove;
/*
* Change to the card's maximum speed.
*/
if (mmc_card_highspeed(card)) {
/*
* The SDIO specification doesn't mention how
* the CIS transfer speed register relates to
* high-speed, but it seems that 50 MHz is
* mandatory.
*/
mmc_set_clock(host, 50000000);
} else {
mmc_set_clock(host, card->cis.max_dtr);
}
/*
* Switch to wider bus (if supported).
*/
err = sdio_enable_wide(card);
if (err)
goto remove;
if (!oldcard)
host->card = card;
return 0;
remove:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Host is being removed. Free up the current card.
*/
@@ -243,10 +395,77 @@ static void mmc_sdio_detect(struct mmc_host *host)
}
}
/*
* SDIO suspend. We need to suspend all functions separately.
* Therefore all registered functions must have drivers with suspend
* and resume methods. Failing that we simply remove the whole card.
*/
static int mmc_sdio_suspend(struct mmc_host *host)
{
int i, err = 0;
for (i = 0; i < host->card->sdio_funcs; i++) {
struct sdio_func *func = host->card->sdio_func[i];
if (func && sdio_func_present(func) && func->dev.driver) {
const struct dev_pm_ops *pmops = func->dev.driver->pm;
if (!pmops || !pmops->suspend || !pmops->resume) {
/* force removal of entire card in that case */
err = -ENOSYS;
} else
err = pmops->suspend(&func->dev);
if (err)
break;
}
}
while (err && --i >= 0) {
struct sdio_func *func = host->card->sdio_func[i];
if (func && sdio_func_present(func) && func->dev.driver) {
const struct dev_pm_ops *pmops = func->dev.driver->pm;
pmops->resume(&func->dev);
}
}
return err;
}
static int mmc_sdio_resume(struct mmc_host *host)
{
int i, err;
BUG_ON(!host);
BUG_ON(!host->card);
/* Basic card reinitialization. */
mmc_claim_host(host);
err = mmc_sdio_init_card(host, host->ocr, host->card);
mmc_release_host(host);
/*
* If the card looked to be the same as before suspending, then
* we proceed to resume all card functions. If one of them returns
* an error then we simply return that error to the core and the
* card will be redetected as new. It is the responsibility of
* the function driver to perform further tests with the extra
* knowledge it has of the card to confirm the card is indeed the
* same as before suspending (same MAC address for network cards,
* etc.) and return an error otherwise.
*/
for (i = 0; !err && i < host->card->sdio_funcs; i++) {
struct sdio_func *func = host->card->sdio_func[i];
if (func && sdio_func_present(func) && func->dev.driver) {
const struct dev_pm_ops *pmops = func->dev.driver->pm;
err = pmops->resume(&func->dev);
}
}
return err;
}
static const struct mmc_bus_ops mmc_sdio_ops = {
.remove = mmc_sdio_remove,
.detect = mmc_sdio_detect,
.suspend = mmc_sdio_suspend,
.resume = mmc_sdio_resume,
};
@@ -275,13 +494,6 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
ocr &= ~0x7F;
}
if (ocr & MMC_VDD_165_195) {
printk(KERN_WARNING "%s: SDIO card claims to support the "
"incompletely defined 'low voltage range'. This "
"will be ignored.\n", mmc_hostname(host));
ocr &= ~MMC_VDD_165_195;
}
host->ocr = mmc_select_voltage(host, ocr);
/*
@@ -293,101 +505,23 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
}
/*
* Inform the card of the voltage
* Detect and init the card.
*/
err = mmc_send_io_op_cond(host, host->ocr, &ocr);
err = mmc_sdio_init_card(host, host->ocr, NULL);
if (err)
goto err;
/*
* For SPI, enable CRC as appropriate.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_set_crc(host, use_spi_crc);
if (err)
goto err;
}
card = host->card;
/*
* The number of functions on the card is encoded inside
* the ocr.
*/
funcs = (ocr & 0x70000000) >> 28;
card->sdio_funcs = funcs = (ocr & 0x70000000) >> 28;
/*
* Allocate card structure.
* If needed, disconnect card detection pull-up resistor.
*/
card = mmc_alloc_card(host, NULL);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_SDIO;
card->sdio_funcs = funcs;
host->card = card;
/*
* For native busses: set card RCA and quit open drain mode.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_send_relative_addr(host, &card->rca);
if (err)
goto remove;
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto remove;
}
/*
* Read the common registers.
*/
err = sdio_read_cccr(card);
if (err)
goto remove;
/*
* Read the common CIS tuples.
*/
err = sdio_read_common_cis(card);
if (err)
goto remove;
/*
* Switch to high-speed (if supported).
*/
err = sdio_enable_hs(card);
if (err)
goto remove;
/*
* Change to the card's maximum speed.
*/
if (mmc_card_highspeed(card)) {
/*
* The SDIO specification doesn't mention how
* the CIS transfer speed register relates to
* high-speed, but it seems that 50 MHz is
* mandatory.
*/
mmc_set_clock(host, 50000000);
} else {
mmc_set_clock(host, card->cis.max_dtr);
}
/*
* Switch to wider bus (if supported).
*/
err = sdio_enable_wide(card);
err = sdio_disable_cd(card);
if (err)
goto remove;

3
drivers/mmc/core/sdio_bus.c
View File

@@ -20,9 +20,6 @@
#include "sdio_cis.h"
#include "sdio_bus.h"
#define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
#define to_sdio_driver(d) container_of(d, struct sdio_driver, drv)
/* show configuration fields */
#define sdio_config_attr(field, format_string) \
static ssize_t \

2
drivers/mmc/core/sdio_cis.c
View File

@@ -40,7 +40,7 @@ static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
nr_strings++;
}
if (buf[i-1] != '\0') {
if (nr_strings < 4) {
printk(KERN_WARNING "SDIO: ignoring broken CISTPL_VERS_1\n");
return 0;
}

2
drivers/mmc/core/sdio_io.c
View File

@@ -624,7 +624,7 @@ void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
BUG_ON(!func);
if (addr < 0xF0 || addr > 0xFF) {
if ((addr < 0xF0 || addr > 0xFF) && (!mmc_card_lenient_fn0(func->card))) {
if (err_ret)
*err_ret = -EINVAL;
return;

29
drivers/mmc/host/Kconfig
View File

@@ -132,11 +132,11 @@ config MMC_OMAP
config MMC_OMAP_HS
tristate "TI OMAP High Speed Multimedia Card Interface support"
depends on ARCH_OMAP2430 || ARCH_OMAP3
depends on ARCH_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4
help
This selects the TI OMAP High Speed Multimedia card Interface.
If you have an OMAP2430 or OMAP3 board with a Multimedia Card slot,
say Y or M here.
If you have an OMAP2430 or OMAP3 board or OMAP4 board with a
Multimedia Card slot, say Y or M here.
If unsure, say N.
@@ -160,6 +160,12 @@ config MMC_AU1X
If unsure, say N.
choice
prompt "Atmel SD/MMC Driver"
default MMC_ATMELMCI if AVR32
help
Choose which driver to use for the Atmel MCI Silicon
config MMC_AT91
tristate "AT91 SD/MMC Card Interface support"
depends on ARCH_AT91
@@ -170,17 +176,19 @@ config MMC_AT91
config MMC_ATMELMCI
tristate "Atmel Multimedia Card Interface support"
depends on AVR32
depends on AVR32 || ARCH_AT91
help
This selects the Atmel Multimedia Card Interface driver. If
you have an AT32 (AVR32) platform with a Multimedia Card
slot, say Y or M here.
you have an AT32 (AVR32) or AT91 platform with a Multimedia
Card slot, say Y or M here.
If unsure, say N.
endchoice
config MMC_ATMELMCI_DMA
bool "Atmel MCI DMA support (EXPERIMENTAL)"
depends on MMC_ATMELMCI && DMA_ENGINE && EXPERIMENTAL
depends on MMC_ATMELMCI && AVR32 && DMA_ENGINE && EXPERIMENTAL
help
Say Y here to have the Atmel MCI driver use a DMA engine to
do data transfers and thus increase the throughput and
@@ -199,6 +207,13 @@ config MMC_IMX
If unsure, say N.
config MMC_MSM7X00A
tristate "Qualcomm MSM 7X00A SDCC Controller Support"
depends on MMC && ARCH_MSM
help
This provides support for the SD/MMC cell found in the
MSM 7X00A controllers from Qualcomm.
config MMC_MXC
tristate "Freescale i.MX2/3 Multimedia Card Interface support"
depends on ARCH_MXC

1
drivers/mmc/host/Makefile
View File

@@ -23,6 +23,7 @@ obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o
obj-$(CONFIG_MMC_AT91) += at91_mci.o
obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
obj-$(CONFIG_MMC_MSM7X00A) += msm_sdcc.o
obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o
obj-$(CONFIG_MMC_SPI) += mmc_spi.o
ifeq ($(CONFIG_OF),y)

42
drivers/mmc/host/atmel-mci.c
View File

@@ -30,6 +30,7 @@
#include <asm/io.h>
#include <asm/unaligned.h>
#include <mach/cpu.h>
#include <mach/board.h>
#include "atmel-mci-regs.h"
@@ -209,6 +210,18 @@ struct atmel_mci_slot {
#define atmci_set_pending(host, event) \
set_bit(event, &host->pending_events)
/*
* Enable or disable features/registers based on
* whether the processor supports them
*/
static bool mci_has_rwproof(void)
{
if (cpu_is_at91sam9261() || cpu_is_at91rm9200())
return false;
else
return true;
}
/*
* The debugfs stuff below is mostly optimized away when
* CONFIG_DEBUG_FS is not set.
@@ -276,8 +289,13 @@ static void atmci_show_status_reg(struct seq_file *s,
[3] = "BLKE",
[4] = "DTIP",
[5] = "NOTBUSY",
[6] = "ENDRX",
[7] = "ENDTX",
[8] = "SDIOIRQA",
[9] = "SDIOIRQB",
[12] = "SDIOWAIT",
[14] = "RXBUFF",
[15] = "TXBUFE",
[16] = "RINDE",
[17] = "RDIRE",
[18] = "RCRCE",
@@ -285,6 +303,11 @@ static void atmci_show_status_reg(struct seq_file *s,
[20] = "RTOE",
[21] = "DCRCE",
[22] = "DTOE",
[23] = "CSTOE",
[24] = "BLKOVRE",
[25] = "DMADONE",
[26] = "FIFOEMPTY",
[27] = "XFRDONE",
[30] = "OVRE",
[31] = "UNRE",
};
@@ -576,6 +599,7 @@ atmci_submit_data_dma(struct atmel_mci *host, struct mmc_data *data)
struct scatterlist *sg;
unsigned int i;
enum dma_data_direction direction;
unsigned int sglen;
/*
* We don't do DMA on "complex" transfers, i.e. with
@@ -605,11 +629,14 @@ atmci_submit_data_dma(struct atmel_mci *host, struct mmc_data *data)
else
direction = DMA_TO_DEVICE;
sglen = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, direction);
if (sglen != data->sg_len)
goto unmap_exit;
desc = chan->device->device_prep_slave_sg(chan,
data->sg, data->sg_len, direction,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc)
return -ENOMEM;
goto unmap_exit;
host->dma.data_desc = desc;
desc->callback = atmci_dma_complete;
@@ -620,6 +647,9 @@ atmci_submit_data_dma(struct atmel_mci *host, struct mmc_data *data)
chan->device->device_issue_pending(chan);
return 0;
unmap_exit:
dma_unmap_sg(&host->pdev->dev, data->sg, sglen, direction);
return -ENOMEM;
}
#else /* CONFIG_MMC_ATMELMCI_DMA */
@@ -849,13 +879,15 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
clkdiv = 255;
}
host->mode_reg = MCI_MR_CLKDIV(clkdiv);
/*
* WRPROOF and RDPROOF prevent overruns/underruns by
* stopping the clock when the FIFO is full/empty.
* This state is not expected to last for long.
*/
host->mode_reg = MCI_MR_CLKDIV(clkdiv) | MCI_MR_WRPROOF
| MCI_MR_RDPROOF;
if (mci_has_rwproof())
host->mode_reg |= (MCI_MR_WRPROOF | MCI_MR_RDPROOF);
if (list_empty(&host->queue))
mci_writel(host, MR, host->mode_reg);
@@ -1648,8 +1680,10 @@ static int __init atmci_probe(struct platform_device *pdev)
nr_slots++;
}
if (!nr_slots)
if (!nr_slots) {
dev_err(&pdev->dev, "init failed: no slot defined\n");
goto err_init_slot;
}
dev_info(&pdev->dev,
"Atmel MCI controller at 0x%08lx irq %d, %u slots\n",

1
drivers/mmc/host/mmc_spi.c
View File

@@ -1562,3 +1562,4 @@ MODULE_AUTHOR("Mike Lavender, David Brownell, "
"Hans-Peter Nilsson, Jan Nikitenko");
MODULE_DESCRIPTION("SPI SD/MMC host driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("spi:mmc_spi");

1287
drivers/mmc/host/msm_sdcc.c Normal file
View File

File diff suppressed because it is too large Load Diff

238
drivers/mmc/host/msm_sdcc.h Normal file
View File

@@ -0,0 +1,238 @@
/*
* linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller
*
* Copyright (C) 2008 Google, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* - Based on mmci.h
*/
#ifndef _MSM_SDCC_H
#define _MSM_SDCC_H
#define MSMSDCC_CRCI_SDC1 6
#define MSMSDCC_CRCI_SDC2 7
#define MSMSDCC_CRCI_SDC3 12
#define MSMSDCC_CRCI_SDC4 13
#define MMCIPOWER 0x000
#define MCI_PWR_OFF 0x00
#define MCI_PWR_UP 0x02
#define MCI_PWR_ON 0x03
#define MCI_OD (1 << 6)
#define MMCICLOCK 0x004
#define MCI_CLK_ENABLE (1 << 8)
#define MCI_CLK_PWRSAVE (1 << 9)
#define MCI_CLK_WIDEBUS (1 << 10)
#define MCI_CLK_FLOWENA (1 << 12)
#define MCI_CLK_INVERTOUT (1 << 13)
#define MCI_CLK_SELECTIN (1 << 14)
#define MMCIARGUMENT 0x008
#define MMCICOMMAND 0x00c
#define MCI_CPSM_RESPONSE (1 << 6)
#define MCI_CPSM_LONGRSP (1 << 7)
#define MCI_CPSM_INTERRUPT (1 << 8)
#define MCI_CPSM_PENDING (1 << 9)
#define MCI_CPSM_ENABLE (1 << 10)
#define MCI_CPSM_PROGENA (1 << 11)
#define MCI_CSPM_DATCMD (1 << 12)
#define MCI_CSPM_MCIABORT (1 << 13)
#define MCI_CSPM_CCSENABLE (1 << 14)
#define MCI_CSPM_CCSDISABLE (1 << 15)
#define MMCIRESPCMD 0x010
#define MMCIRESPONSE0 0x014
#define MMCIRESPONSE1 0x018
#define MMCIRESPONSE2 0x01c
#define MMCIRESPONSE3 0x020
#define MMCIDATATIMER 0x024
#define MMCIDATALENGTH 0x028
#define MMCIDATACTRL 0x02c
#define MCI_DPSM_ENABLE (1 << 0)
#define MCI_DPSM_DIRECTION (1 << 1)
#define MCI_DPSM_MODE (1 << 2)
#define MCI_DPSM_DMAENABLE (1 << 3)
#define MMCIDATACNT 0x030
#define MMCISTATUS 0x034
#define MCI_CMDCRCFAIL (1 << 0)
#define MCI_DATACRCFAIL (1 << 1)
#define MCI_CMDTIMEOUT (1 << 2)
#define MCI_DATATIMEOUT (1 << 3)
#define MCI_TXUNDERRUN (1 << 4)
#define MCI_RXOVERRUN (1 << 5)
#define MCI_CMDRESPEND (1 << 6)
#define MCI_CMDSENT (1 << 7)
#define MCI_DATAEND (1 << 8)
#define MCI_DATABLOCKEND (1 << 10)
#define MCI_CMDACTIVE (1 << 11)
#define MCI_TXACTIVE (1 << 12)
#define MCI_RXACTIVE (1 << 13)
#define MCI_TXFIFOHALFEMPTY (1 << 14)
#define MCI_RXFIFOHALFFULL (1 << 15)
#define MCI_TXFIFOFULL (1 << 16)
#define MCI_RXFIFOFULL (1 << 17)
#define MCI_TXFIFOEMPTY (1 << 18)
#define MCI_RXFIFOEMPTY (1 << 19)
#define MCI_TXDATAAVLBL (1 << 20)
#define MCI_RXDATAAVLBL (1 << 21)
#define MCI_SDIOINTR (1 << 22)
#define MCI_PROGDONE (1 << 23)
#define MCI_ATACMDCOMPL (1 << 24)
#define MCI_SDIOINTOPER (1 << 25)
#define MCI_CCSTIMEOUT (1 << 26)
#define MMCICLEAR 0x038
#define MCI_CMDCRCFAILCLR (1 << 0)
#define MCI_DATACRCFAILCLR (1 << 1)
#define MCI_CMDTIMEOUTCLR (1 << 2)
#define MCI_DATATIMEOUTCLR (1 << 3)
#define MCI_TXUNDERRUNCLR (1 << 4)
#define MCI_RXOVERRUNCLR (1 << 5)
#define MCI_CMDRESPENDCLR (1 << 6)
#define MCI_CMDSENTCLR (1 << 7)
#define MCI_DATAENDCLR (1 << 8)
#define MCI_DATABLOCKENDCLR (1 << 10)
#define MMCIMASK0 0x03c
#define MCI_CMDCRCFAILMASK (1 << 0)
#define MCI_DATACRCFAILMASK (1 << 1)
#define MCI_CMDTIMEOUTMASK (1 << 2)
#define MCI_DATATIMEOUTMASK (1 << 3)
#define MCI_TXUNDERRUNMASK (1 << 4)
#define MCI_RXOVERRUNMASK (1 << 5)
#define MCI_CMDRESPENDMASK (1 << 6)
#define MCI_CMDSENTMASK (1 << 7)
#define MCI_DATAENDMASK (1 << 8)
#define MCI_DATABLOCKENDMASK (1 << 10)
#define MCI_CMDACTIVEMASK (1 << 11)
#define MCI_TXACTIVEMASK (1 << 12)
#define MCI_RXACTIVEMASK (1 << 13)
#define MCI_TXFIFOHALFEMPTYMASK (1 << 14)
#define MCI_RXFIFOHALFFULLMASK (1 << 15)
#define MCI_TXFIFOFULLMASK (1 << 16)
#define MCI_RXFIFOFULLMASK (1 << 17)
#define MCI_TXFIFOEMPTYMASK (1 << 18)
#define MCI_RXFIFOEMPTYMASK (1 << 19)
#define MCI_TXDATAAVLBLMASK (1 << 20)
#define MCI_RXDATAAVLBLMASK (1 << 21)
#define MCI_SDIOINTMASK (1 << 22)
#define MCI_PROGDONEMASK (1 << 23)
#define MCI_ATACMDCOMPLMASK (1 << 24)
#define MCI_SDIOINTOPERMASK (1 << 25)
#define MCI_CCSTIMEOUTMASK (1 << 26)
#define MMCIMASK1 0x040
#define MMCIFIFOCNT 0x044
#define MCICCSTIMER 0x058
#define MMCIFIFO 0x080 /* to 0x0bc */
#define MCI_IRQENABLE \
(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \
MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \
MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK)
/*
* The size of the FIFO in bytes.
*/
#define MCI_FIFOSIZE (16*4)
#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
#define NR_SG 32
struct clk;
struct msmsdcc_nc_dmadata {
dmov_box cmd[NR_SG];
uint32_t cmdptr;
};
struct msmsdcc_dma_data {
struct msmsdcc_nc_dmadata *nc;
dma_addr_t nc_busaddr;
dma_addr_t cmd_busaddr;
dma_addr_t cmdptr_busaddr;
struct msm_dmov_cmd hdr;
enum dma_data_direction dir;
struct scatterlist *sg;
int num_ents;
int channel;
struct msmsdcc_host *host;
int busy; /* Set if DM is busy */
};
struct msmsdcc_pio_data {
struct scatterlist *sg;
unsigned int sg_len;
unsigned int sg_off;
};
struct msmsdcc_curr_req {
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
unsigned int xfer_size; /* Total data size */
unsigned int xfer_remain; /* Bytes remaining to send */
unsigned int data_xfered; /* Bytes acked by BLKEND irq */
int got_dataend;
int got_datablkend;
int user_pages;
};
struct msmsdcc_stats {
unsigned int reqs;
unsigned int cmds;
unsigned int cmdpoll_hits;
unsigned int cmdpoll_misses;
};
struct msmsdcc_host {
struct resource *cmd_irqres;
struct resource *pio_irqres;
struct resource *memres;
struct resource *dmares;
void __iomem *base;
int pdev_id;
unsigned int stat_irq;
struct msmsdcc_curr_req curr;
struct mmc_host *mmc;
struct clk *clk; /* main MMC bus clock */
struct clk *pclk; /* SDCC peripheral bus clock */
unsigned int clks_on; /* set if clocks are enabled */
struct timer_list command_timer;
unsigned int eject; /* eject state */
spinlock_t lock;
unsigned int clk_rate; /* Current clock rate */
unsigned int pclk_rate;
u32 pwr;
u32 saved_irq0mask; /* MMCIMASK0 reg value */
struct mmc_platform_data *plat;
struct timer_list timer;
unsigned int oldstat;
struct msmsdcc_dma_data dma;
struct msmsdcc_pio_data pio;
int cmdpoll;
struct msmsdcc_stats stats;
};
#endif

2
drivers/mmc/host/mxcmmc.c
View File

@@ -512,7 +512,7 @@ static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat)
}
/* For the DMA case the DMA engine handles the data transfer
* automatically. For non DMA we have to to it ourselves.
* automatically. For non DMA we have to do it ourselves.
* Don't do it in interrupt context though.
*/
if (!mxcmci_use_dma(host) && host->data)

1083
drivers/mmc/host/omap_hsmmc.c
View File

File diff suppressed because it is too large Load Diff

49
drivers/mmc/host/sdhci-of.c
View File

@@ -21,6 +21,7 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/mmc/host.h>
#include <asm/machdep.h>
#include "sdhci.h"
struct sdhci_of_data {
@@ -48,6 +49,8 @@ struct sdhci_of_host {
#define ESDHC_CLOCK_HCKEN 0x00000002
#define ESDHC_CLOCK_IPGEN 0x00000001
#define ESDHC_HOST_CONTROL_RES 0x05
static u32 esdhc_readl(struct sdhci_host *host, int reg)
{
return in_be32(host->ioaddr + reg);
@@ -109,13 +112,17 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
int base = reg & ~0x3;
int shift = (reg & 0x3) * 8;
/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
if (reg == SDHCI_HOST_CONTROL)
val &= ~ESDHC_HOST_CONTROL_RES;
clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift);
}
static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
{
int div;
int pre_div = 2;
int div = 1;
clrbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK);
@@ -123,19 +130,17 @@ static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock == 0)
goto out;
if (host->max_clk / 16 > clock) {
for (; pre_div < 256; pre_div *= 2) {
if (host->max_clk / pre_div < clock * 16)
break;
}
}
while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
pre_div *= 2;
for (div = 1; div <= 16; div++) {
if (host->max_clk / (div * pre_div) <= clock)
break;
}
while (host->max_clk / pre_div / div > clock && div < 16)
div++;
dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
clock, host->max_clk / pre_div / div);
pre_div >>= 1;
div--;
setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
@@ -165,19 +170,12 @@ static unsigned int esdhc_get_min_clock(struct sdhci_host *host)
return of_host->clock / 256 / 16;
}
static unsigned int esdhc_get_timeout_clock(struct sdhci_host *host)
{
struct sdhci_of_host *of_host = sdhci_priv(host);
return of_host->clock / 1000;
}
static struct sdhci_of_data sdhci_esdhc = {
.quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
SDHCI_QUIRK_BROKEN_CARD_DETECTION |
SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
SDHCI_QUIRK_NO_BUSY_IRQ |
SDHCI_QUIRK_NONSTANDARD_CLOCK |
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_PIO_NEEDS_DELAY |
SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET |
SDHCI_QUIRK_NO_CARD_NO_RESET,
@@ -192,7 +190,6 @@ static struct sdhci_of_data sdhci_esdhc = {
.enable_dma = esdhc_enable_dma,
.get_max_clock = esdhc_get_max_clock,
.get_min_clock = esdhc_get_min_clock,
.get_timeout_clock = esdhc_get_timeout_clock,
},
};
@@ -219,6 +216,15 @@ static int sdhci_of_resume(struct of_device *ofdev)
#endif
static bool __devinit sdhci_of_wp_inverted(struct device_node *np)
{
if (of_get_property(np, "sdhci,wp-inverted", NULL))
return true;
/* Old device trees don't have the wp-inverted property. */
return machine_is(mpc837x_rdb) || machine_is(mpc837x_mds);
}
static int __devinit sdhci_of_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
@@ -261,6 +267,9 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
if (of_get_property(np, "sdhci,1-bit-only", NULL))
host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
if (sdhci_of_wp_inverted(np))
host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
clk = of_get_property(np, "clock-frequency", &size);
if (clk && size == sizeof(*clk) && *clk)
of_host->clock = *clk;

5
drivers/mmc/host/sdhci-pci.c
View File

@@ -83,7 +83,8 @@ static int ricoh_probe(struct sdhci_pci_chip *chip)
if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET;
if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)
if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
return 0;
@@ -395,7 +396,7 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host)
if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
(host->flags & SDHCI_USE_DMA)) {
(host->flags & SDHCI_USE_SDMA)) {
dev_warn(&pdev->dev, "Will use DMA mode even though HW "
"doesn't fully claim to support it.\n");
}

54
drivers/mmc/host/sdhci.c
View File

@@ -591,6 +591,9 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
target_timeout = data->timeout_ns / 1000 +
data->timeout_clks / host->clock;
if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)
host->timeout_clk = host->clock / 1000;
/*
* Figure out needed cycles.
* We do this in steps in order to fit inside a 32 bit int.
@@ -652,7 +655,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
count = sdhci_calc_timeout(host, data);
sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
if (host->flags & SDHCI_USE_DMA)
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))
host->flags |= SDHCI_REQ_USE_DMA;
/*
@@ -991,8 +994,8 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Wait max 10 ms */
timeout = 10;
/* Wait max 20 ms */
timeout = 20;
while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
& SDHCI_CLOCK_INT_STABLE)) {
if (timeout == 0) {
@@ -1597,7 +1600,7 @@ int sdhci_resume_host(struct sdhci_host *host)
{
int ret;
if (host->flags & SDHCI_USE_DMA) {
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma)
host->ops->enable_dma(host);
}
@@ -1678,23 +1681,20 @@ int sdhci_add_host(struct sdhci_host *host)
caps = sdhci_readl(host, SDHCI_CAPABILITIES);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_DMA;
else if (!(caps & SDHCI_CAN_DO_DMA))
DBG("Controller doesn't have DMA capability\n");
host->flags |= SDHCI_USE_SDMA;
else if (!(caps & SDHCI_CAN_DO_SDMA))
DBG("Controller doesn't have SDMA capability\n");
else
host->flags |= SDHCI_USE_DMA;
host->flags |= SDHCI_USE_SDMA;
if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) &&
(host->flags & SDHCI_USE_DMA)) {
(host->flags & SDHCI_USE_SDMA)) {
DBG("Disabling DMA as it is marked broken\n");
host->flags &= ~SDHCI_USE_DMA;
host->flags &= ~SDHCI_USE_SDMA;
}
if (host->flags & SDHCI_USE_DMA) {
if ((host->version >= SDHCI_SPEC_200) &&
(caps & SDHCI_CAN_DO_ADMA2))
host->flags |= SDHCI_USE_ADMA;
}
if ((host->version >= SDHCI_SPEC_200) && (caps & SDHCI_CAN_DO_ADMA2))
host->flags |= SDHCI_USE_ADMA;
if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) &&
(host->flags & SDHCI_USE_ADMA)) {
@@ -1702,13 +1702,14 @@ int sdhci_add_host(struct sdhci_host *host)
host->flags &= ~SDHCI_USE_ADMA;
}
if (host->flags & SDHCI_USE_DMA) {
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma) {
if (host->ops->enable_dma(host)) {
printk(KERN_WARNING "%s: No suitable DMA "
"available. Falling back to PIO.\n",
mmc_hostname(mmc));
host->flags &= ~(SDHCI_USE_DMA | SDHCI_USE_ADMA);
host->flags &=
~(SDHCI_USE_SDMA | SDHCI_USE_ADMA);
}
}
}
@@ -1736,7 +1737,7 @@ int sdhci_add_host(struct sdhci_host *host)
* mask, but PIO does not need the hw shim so we set a new
* mask here in that case.
*/
if (!(host->flags & SDHCI_USE_DMA)) {
if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) {
host->dma_mask = DMA_BIT_MASK(64);
mmc_dev(host->mmc)->dma_mask = &host->dma_mask;
}
@@ -1757,13 +1758,15 @@ int sdhci_add_host(struct sdhci_host *host)
host->timeout_clk =
(caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
if (host->timeout_clk == 0) {
if (!host->ops->get_timeout_clock) {
if (host->ops->get_timeout_clock) {
host->timeout_clk = host->ops->get_timeout_clock(host);
} else if (!(host->quirks &
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
printk(KERN_ERR
"%s: Hardware doesn't specify timeout clock "
"frequency.\n", mmc_hostname(mmc));
return -ENODEV;
}
host->timeout_clk = host->ops->get_timeout_clock(host);
}
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
@@ -1772,7 +1775,8 @@ int sdhci_add_host(struct sdhci_host *host)
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
if (host->ops->get_min_clock)
if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK &&
host->ops->set_clock && host->ops->get_min_clock)
mmc->f_min = host->ops->get_min_clock(host);
else
mmc->f_min = host->max_clk / 256;
@@ -1810,7 +1814,7 @@ int sdhci_add_host(struct sdhci_host *host)
*/
if (host->flags & SDHCI_USE_ADMA)
mmc->max_hw_segs = 128;
else if (host->flags & SDHCI_USE_DMA)
else if (host->flags & SDHCI_USE_SDMA)
mmc->max_hw_segs = 1;
else /* PIO */
mmc->max_hw_segs = 128;
@@ -1893,10 +1897,10 @@ int sdhci_add_host(struct sdhci_host *host)
mmc_add_host(mmc);
printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s%s\n",
printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n",
mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)),
(host->flags & SDHCI_USE_ADMA)?"A":"",
(host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
(host->flags & SDHCI_USE_ADMA) ? "ADMA" :
(host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO");
sdhci_enable_card_detection(host);

6
drivers/mmc/host/sdhci.h
View File

@@ -143,7 +143,7 @@
#define SDHCI_CAN_DO_ADMA2 0x00080000
#define SDHCI_CAN_DO_ADMA1 0x00100000
#define SDHCI_CAN_DO_HISPD 0x00200000
#define SDHCI_CAN_DO_DMA 0x00400000
#define SDHCI_CAN_DO_SDMA 0x00400000
#define SDHCI_CAN_VDD_330 0x01000000
#define SDHCI_CAN_VDD_300 0x02000000
#define SDHCI_CAN_VDD_180 0x04000000
@@ -232,6 +232,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22)
/* Controller needs 10ms delay between applying power and clock */
#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
/* Controller uses SDCLK instead of TMCLK for data timeouts */
#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
@@ -250,7 +252,7 @@ struct sdhci_host {
spinlock_t lock; /* Mutex */
int flags; /* Host attributes */
#define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */
#define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */
#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */
#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */
#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */