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-rw-r--r--drivers/mmc/core/Kconfig4
-rw-r--r--drivers/mmc/core/core.c405
-rw-r--r--drivers/mmc/core/core.h10
-rw-r--r--drivers/mmc/core/host.c6
-rw-r--r--drivers/mmc/core/host.h2
-rw-r--r--drivers/mmc/core/mmc.c407
-rw-r--r--drivers/mmc/core/mmc_ops.c36
-rw-r--r--drivers/mmc/core/mmc_ops.h1
-rw-r--r--drivers/mmc/core/sd.c52
-rw-r--r--drivers/mmc/core/sdio.c196
-rw-r--r--drivers/mmc/core/sdio_io.c49
-rw-r--r--drivers/mmc/core/sdio_ops.c112
-rw-r--r--drivers/mmc/core/sdio_ops.h1
-rw-r--r--drivers/mmc/host/mx_sdhci.c127
-rw-r--r--drivers/mmc/host/mx_sdhci.h17
-rw-r--r--drivers/mmc/host/mxc_mmc.c4
-rw-r--r--drivers/mmc/host/mxs-mmc.c92
17 files changed, 1327 insertions, 194 deletions
diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig
index ab37a6d9d32a..bb22ffd76ef8 100644
--- a/drivers/mmc/core/Kconfig
+++ b/drivers/mmc/core/Kconfig
@@ -3,7 +3,7 @@
#
config MMC_UNSAFE_RESUME
- bool "Allow unsafe resume (DANGEROUS)"
+ bool "Assume MMC/SD cards are non-removable (DANGEROUS)"
help
If you say Y here, the MMC layer will assume that all cards
stayed in their respective slots during the suspend. The
@@ -14,3 +14,5 @@ config MMC_UNSAFE_RESUME
This option is usually just for embedded systems which use
a MMC/SD card for rootfs. Most people should say N here.
+ This option sets a default which can be overridden by the
+ module parameter "removable=0" or "removable=1".
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 50b208253440..91ba2f812d73 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -48,6 +48,22 @@ int use_spi_crc = 1;
module_param(use_spi_crc, bool, 0);
/*
+ * We normally treat cards as removed during suspend if they are not
+ * known to be on a non-removable bus, to avoid the risk of writing
+ * back data to a different card after resume. Allow this to be
+ * overridden if necessary.
+ */
+#ifdef CONFIG_MMC_UNSAFE_RESUME
+int mmc_assume_removable;
+#else
+int mmc_assume_removable = 1;
+#endif
+module_param_named(removable, mmc_assume_removable, bool, 0644);
+MODULE_PARM_DESC(
+ removable,
+ "MMC/SD cards are removable and may be removed during suspend");
+
+/*
* Internal function. Schedule delayed work in the MMC work queue.
*/
static int mmc_schedule_delayed_work(struct delayed_work *work,
@@ -344,6 +360,101 @@ 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
* @abort: whether or not the operation should be aborted
@@ -366,25 +477,111 @@ 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 +590,11 @@ 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 +880,13 @@ 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)) {
@@ -858,6 +1057,17 @@ void mmc_rescan(struct work_struct *work)
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ if (host->rescan_disable) {
+ spin_unlock_irqrestore(&host->lock, flags);
+ return;
+ }
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
mmc_bus_get(host);
@@ -890,8 +1100,7 @@ void mmc_rescan(struct work_struct *work)
mmc_claim_host(host);
mmc_power_up(host);
- sdio_go_idle(host);
-
+ sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
@@ -949,9 +1158,14 @@ 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();
+ /* clear pm flags now and let card drivers set them as needed */
+ host->pm_flags = 0;
+
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->remove)
@@ -960,6 +1174,8 @@ 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);
@@ -968,6 +1184,80 @@ 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
/**
@@ -977,27 +1267,37 @@ 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);
+ host->pm_flags = 0;
+ err = 0;
}
}
mmc_bus_put(host);
- mmc_power_off(host);
+ if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
+ mmc_power_off(host);
- return 0;
+ return err;
}
EXPORT_SYMBOL(mmc_suspend_host);
@@ -1008,26 +1308,75 @@ 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);
+ if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
+ 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);
+ err = 0;
+ }
}
mmc_bus_put(host);
- /*
- * We add a slight delay here so that resume can progress
- * in parallel.
- */
- mmc_detect_change(host, 1);
-
- return 0;
+ return err;
}
-
EXPORT_SYMBOL(mmc_resume_host);
+/* Do the card removal on suspend if card is assumed removeable
+ * Do that in pm notifier while userspace isn't yet frozen, so we will be able
+ to sync the card.
+*/
+int mmc_pm_notify(struct notifier_block *notify_block,
+ unsigned long mode, void *unused)
+{
+ struct mmc_host *host = container_of(
+ notify_block, struct mmc_host, pm_notify);
+ unsigned long flags;
+
+
+ switch (mode) {
+ case PM_HIBERNATION_PREPARE:
+ case PM_SUSPEND_PREPARE:
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->rescan_disable = 1;
+ spin_unlock_irqrestore(&host->lock, flags);
+ cancel_delayed_work_sync(&host->detect);
+
+ if (!host->bus_ops || host->bus_ops->suspend)
+ break;
+
+ mmc_claim_host(host);
+
+ if (host->bus_ops->remove)
+ host->bus_ops->remove(host);
+
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+ host->pm_flags = 0;
+ break;
+
+ case PM_POST_SUSPEND:
+ case PM_POST_HIBERNATION:
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->rescan_disable = 0;
+ spin_unlock_irqrestore(&host->lock, flags);
+ mmc_detect_change(host, 0);
+
+ }
+
+ return 0;
+}
#endif
static int __init mmc_init(void)
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index c819effa1032..a811c52a1659 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -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);
@@ -50,7 +54,9 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
int mmc_attach_sd(struct mmc_host *host, u32 ocr);
int mmc_attach_sdio(struct mmc_host *host, u32 ocr);
+/* Module parameters */
extern int use_spi_crc;
+extern int mmc_assume_removable;
/* Debugfs information for hosts and cards */
void mmc_add_host_debugfs(struct mmc_host *host);
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 5e945e64ead7..0efe631e50ca 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -16,6 +16,8 @@
#include <linux/idr.h>
#include <linux/pagemap.h>
#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
#include <linux/mmc/host.h>
@@ -83,6 +85,8 @@ 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);
+ host->pm_notify.notifier_call = mmc_pm_notify;
/*
* By default, hosts do not support SGIO or large requests.
@@ -131,6 +135,7 @@ int mmc_add_host(struct mmc_host *host)
#endif
mmc_start_host(host);
+ register_pm_notifier(&host->pm_notify);
return 0;
}
@@ -147,6 +152,7 @@ EXPORT_SYMBOL(mmc_add_host);
*/
void mmc_remove_host(struct mmc_host *host)
{
+ unregister_pm_notifier(&host->pm_notify);
mmc_stop_host(host);
#ifdef CONFIG_DEBUG_FS
diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h
index c2dc3d2d9f9a..8c87e1109a34 100644
--- a/drivers/mmc/core/host.h
+++ b/drivers/mmc/core/host.h
@@ -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
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index e207dcf9e754..2338c761c74f 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -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);
@@ -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 > 5) {
+ 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 |
@@ -226,7 +225,17 @@ static int mmc_read_ext_csd(struct mmc_card *card)
mmc_card_set_blockaddr(card);
}
+ card->ext_csd.boot_info = ext_csd[EXT_CSD_BOOT_INFO];
+ card->ext_csd.boot_size_mult = ext_csd[EXT_CSD_BOOT_SIZE_MULT];
+ card->ext_csd.boot_config = ext_csd[EXT_CSD_BOOT_CONFIG];
+ card->ext_csd.boot_bus_width = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
+ card->ext_csd.card_type = ext_csd[EXT_CSD_CARD_TYPE];
+
switch (ext_csd[EXT_CSD_CARD_TYPE]) {
+ case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52
+ | EXT_CSD_CARD_TYPE_26:
+ card->ext_csd.hs_max_dtr = 52000000;
+ break;
case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
break;
@@ -238,15 +247,301 @@ static int mmc_read_ext_csd(struct mmc_card *card)
printk(KERN_WARNING "%s: card is mmc v4 but doesn't "
"support any high-speed modes.\n",
mmc_hostname(card->host));
+ printk(KERN_WARNING "%s: card type is 0x%x\n",
+ mmc_hostname(card->host), ext_csd[EXT_CSD_CARD_TYPE]);
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);
return err;
}
+/* configure the boot partitions */
+static ssize_t
+setup_boot_partitions(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int err, busy = 0;
+ u32 part, new_part;
+ u8 *ext_csd, boot_config;
+ struct mmc_command cmd;
+ struct mmc_card *card = container_of(dev, struct mmc_card, dev);
+
+ BUG_ON(!card);
+
+ sscanf(buf, "%d\n", &part);
+
+ if (card->csd.mmca_vsn < CSD_SPEC_VER_4) {
+ printk(KERN_ERR "%s: invalid mmc version"
+ " mmc version is below version 4!)\n",
+ mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
+ /* it's a normal SD/MMC but user request to configure boot partition */
+ if (card->ext_csd.boot_size_mult <= 0) {
+ printk(KERN_ERR "%s: this is a normal SD/MMC card"
+ " but you request to access boot partition!\n",
+ mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ printk(KERN_ERR "%s: could not allocate a buffer to "
+ "receive the ext_csd.\n", mmc_hostname(card->host));
+ return -ENOMEM;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ printk(KERN_ERR "%s: unable to read EXT_CSD.\n",
+ mmc_hostname(card->host));
+ goto err_rtn;
+ }
+
+ /* enable the boot partition in boot mode */
+ /* boot enable be -
+ * 0x00 - disable boot enable.
+ * 0x08 - boot partition 1 is enabled for boot.
+ * 0x10 - boot partition 2 is enabled for boot.
+ * 0x38 - User area is enabled for boot.
+ */
+ switch (part & EXT_CSD_BOOT_PARTITION_ENABLE_MASK) {
+ case 0:
+ boot_config = (ext_csd[EXT_CSD_BOOT_CONFIG]
+ & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK
+ & ~EXT_CSD_BOOT_ACK_ENABLE);
+ break;
+ case EXT_CSD_BOOT_PARTITION_PART1:
+ boot_config = ((ext_csd[EXT_CSD_BOOT_CONFIG]
+ & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
+ | EXT_CSD_BOOT_PARTITION_PART1
+ | EXT_CSD_BOOT_ACK_ENABLE);
+ break;
+ case EXT_CSD_BOOT_PARTITION_PART2:
+ boot_config = ((ext_csd[EXT_CSD_BOOT_CONFIG]
+ & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
+ | EXT_CSD_BOOT_PARTITION_PART2
+ | EXT_CSD_BOOT_ACK_ENABLE);
+ break;
+ case EXT_CSD_BOOT_PARTITION_ENABLE_MASK:
+ boot_config = ((ext_csd[EXT_CSD_BOOT_CONFIG]
+ | EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
+ & ~EXT_CSD_BOOT_ACK_ENABLE);
+ break;
+ default:
+ printk(KERN_ERR "%s: wrong boot config parameter"
+ " 00 (disable boot), 08 (enable boot1),"
+ "16 (enable boot2), 56 (User area)\n",
+ mmc_hostname(card->host));
+ err = -EINVAL;
+ goto err_rtn;
+ }
+
+ /* switch the partitions that used to be accessed in OS layer */
+ /* partition must be -
+ * 0 - user area
+ * 1 - boot partition 1
+ * 2 - boot partition 2
+ */
+ if ((part & EXT_CSD_BOOT_PARTITION_ACCESS_MASK) > 2) {
+ printk(KERN_ERR "%s: wrong partition id"
+ " 0 (user area), 1 (boot1), 2 (boot2)\n",
+ mmc_hostname(card->host));
+ err = -EINVAL;
+ goto err_rtn;
+ }
+
+ /* Send SWITCH command to change partition for access */
+ boot_config &= ~EXT_CSD_BOOT_PARTITION_ACCESS_MASK;
+ boot_config |= (part & EXT_CSD_BOOT_PARTITION_ACCESS_MASK);
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BOOT_CONFIG, boot_config);
+ if (err) {
+ printk(KERN_ERR "%s: fail to send SWITCH command"
+ " to card to swich partition for access!\n",
+ mmc_hostname(card->host));
+ goto err_rtn;
+ }
+
+ /* waiting for the card to finish the busy state */
+ do {
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, 0);
+ if (err || busy > 100) {
+ printk(KERN_ERR "%s: failed to wait for"
+ "the busy state to end.\n",
+ mmc_hostname(card->host));
+ break;
+ }
+
+ if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) {
+ printk(KERN_INFO "%s: card is in busy state"
+ "pls wait for busy state to end.\n",
+ mmc_hostname(card->host));
+ }
+ busy++;
+ } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
+
+ /* Now check whether it works */
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ printk(KERN_ERR "%s: %d unable to re-read EXT_CSD.\n",
+ mmc_hostname(card->host), err);
+ goto err_rtn;
+ }
+
+ new_part = ext_csd[EXT_CSD_BOOT_CONFIG] &
+ EXT_CSD_BOOT_PARTITION_ACCESS_MASK;
+ if ((part & EXT_CSD_BOOT_PARTITION_ACCESS_MASK) != new_part) {
+ printk(KERN_ERR "%s: after SWITCH, current part id %d is not"
+ " same as requested partition %d!\n",
+ mmc_hostname(card->host), new_part, part);
+ goto err_rtn;
+ }
+ card->ext_csd.boot_config = ext_csd[EXT_CSD_BOOT_CONFIG];
+
+err_rtn:
+ mmc_release_host(card->host);
+ kfree(ext_csd);
+ if (err)
+ return err;
+ else
+ return count;
+}
+
+/* configure the boot bus */
+static ssize_t
+setup_boot_bus(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int err, busy = 0;
+ u32 boot_bus, new_bus;
+ u8 *ext_csd;
+ struct mmc_command cmd;
+ struct mmc_card *card = container_of(dev, struct mmc_card, dev);
+
+ BUG_ON(!card);
+
+ sscanf(buf, "%d\n", &boot_bus);
+
+ if (card->csd.mmca_vsn < CSD_SPEC_VER_4) {
+ printk(KERN_ERR "%s: invalid mmc version"
+ " mmc version is below version 4!)\n",
+ mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
+ /* it's a normal SD/MMC but user request to configure boot bus */
+ if (card->ext_csd.boot_size_mult <= 0) {
+ printk(KERN_ERR "%s: this is a normal SD/MMC card"
+ " but you request to configure boot bus !\n",
+ mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ printk(KERN_ERR "%s: could not allocate a buffer to "
+ "receive the ext_csd.\n", mmc_hostname(card->host));
+ return -ENOMEM;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ printk(KERN_ERR "%s: unable to read EXT_CSD.\n",
+ mmc_hostname(card->host));
+ goto err_rtn;
+ }
+
+ /* Configure the boot bus width when boot partition is enabled */
+ if (((boot_bus & EXT_CSD_BOOT_BUS_WIDTH_MODE_MASK) >> 3) > 2
+ || (boot_bus & EXT_CSD_BOOT_BUS_WIDTH_WIDTH_MASK) > 2
+ || (boot_bus & ~EXT_CSD_BOOT_BUS_WIDTH_MASK) > 0) {
+ printk(KERN_ERR "%s: Invalid inputs!\n",
+ mmc_hostname(card->host));
+ err = -EINVAL;
+ goto err_rtn;
+ }
+
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BOOT_BUS_WIDTH, boot_bus);
+ if (err) {
+ printk(KERN_ERR "%s: fail to send SWITCH command to "
+ "card to swich partition for access!\n",
+ mmc_hostname(card->host));
+ goto err_rtn;
+ }
+
+ /* waiting for the card to finish the busy state */
+ do {
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, 0);
+ if (err || busy > 100) {
+ printk(KERN_ERR "%s: failed to wait for"
+ "the busy state to end.\n",
+ mmc_hostname(card->host));
+ break;
+ }
+
+ if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) {
+ printk(KERN_INFO "%s: card is in busy state"
+ "pls wait for busy state to end.\n",
+ mmc_hostname(card->host));
+ }
+ busy++;
+ } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
+
+ /* Now check whether it works */
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ printk(KERN_ERR "%s: %d unable to re-read EXT_CSD.\n",
+ mmc_hostname(card->host), err);
+ goto err_rtn;
+ }
+
+ new_bus = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
+ if (boot_bus != new_bus) {
+ printk(KERN_ERR "%s: after SWITCH, current boot bus mode %d"
+ " is not same as requested bus mode %d!\n",
+ mmc_hostname(card->host), new_bus, boot_bus);
+ goto err_rtn;
+ }
+ card->ext_csd.boot_bus_width = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
+
+err_rtn:
+ mmc_release_host(card->host);
+ kfree(ext_csd);
+ if (err)
+ return err;
+ else
+ return count;
+}
+
MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
card->raw_cid[2], card->raw_cid[3]);
MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
@@ -258,6 +553,12 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
+MMC_DEV_ATTR(boot_info, "boot_info:0x%02x; boot_size:%04dKB;"
+ " boot_partition:0x%02x; boot_bus:0x%02x\n",
+ card->ext_csd.boot_info, card->ext_csd.boot_size_mult * 128,
+ card->ext_csd.boot_config, card->ext_csd.boot_bus_width);
+DEVICE_ATTR(boot_config, S_IWUGO, NULL, setup_boot_partitions);
+DEVICE_ATTR(boot_bus_config, S_IWUGO, NULL, setup_boot_bus);
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
@@ -269,6 +570,9 @@ static struct attribute *mmc_std_attrs[] = {
&dev_attr_name.attr,
&dev_attr_oemid.attr,
&dev_attr_serial.attr,
+ &dev_attr_boot_info.attr,
+ &dev_attr_boot_config.attr,
+ &dev_attr_boot_bus_config.attr,
NULL,
};
@@ -434,10 +738,21 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
- (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
+ (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA
+ | MMC_CAP_DATA_DDR))) {
unsigned ext_csd_bit, bus_width;
- if (host->caps & MMC_CAP_8_BIT_DATA) {
+ if ((host->caps & MMC_CAP_8_BIT_DATA) &&
+ (host->caps & MMC_CAP_DATA_DDR) &&
+ (card->ext_csd.card_type & MMC_DDR_MODE_MASK)) {
+ ext_csd_bit = EXT_CSD_BUS_WIDTH_8_DDR;
+ bus_width = MMC_BUS_WIDTH_8 | MMC_BUS_WIDTH_DDR;
+ } else if ((host->caps & MMC_CAP_4_BIT_DATA) &&
+ (host->caps & MMC_CAP_DATA_DDR) &&
+ (card->ext_csd.card_type & MMC_DDR_MODE_MASK)) {
+ ext_csd_bit = EXT_CSD_BUS_WIDTH_4_DDR;
+ bus_width = MMC_BUS_WIDTH_4 | MMC_BUS_WIDTH_DDR;
+ } else if (host->caps & MMC_CAP_8_BIT_DATA) {
ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
bus_width = MMC_BUS_WIDTH_8;
} else {
@@ -507,12 +822,10 @@ 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 +835,8 @@ 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 +845,7 @@ 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 +856,78 @@ 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);
+ return err;
+}
- mmc_claim_host(host);
- mmc_detach_bus(host);
- mmc_release_host(host);
+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);
+}
+
+static int mmc_sleep(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, 1);
+ if (err < 0)
+ pr_debug("%s: Error %d while putting card into sleep",
+ mmc_hostname(host), err);
}
+ return err;
}
-#else
-
-#define mmc_suspend NULL
-#define mmc_resume NULL
+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);
+ }
-#endif
+ return err;
+}
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 || !mmc_assume_removable)
+ bus_ops = &mmc_ops_unsafe;
+ else
+ bus_ops = &mmc_ops;
+ mmc_attach_bus(host, bus_ops);
+}
+
/*
* Starting point for MMC card init.
*/
@@ -575,7 +938,7 @@ 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.
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 34ce2703d29a..355c6042cf65 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -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;
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index 17854bf7cf0d..653eb8e84178 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -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
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index cd81c395e164..4a73e34f9200 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -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 +595,44 @@ 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
-
-#define mmc_sd_suspend NULL
-#define mmc_sd_resume NULL
-
-#endif
+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);
+}
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 || !mmc_assume_removable)
+ bus_ops = &mmc_sd_ops_unsafe;
+ else
+ bus_ops = &mmc_sd_ops;
+ mmc_attach_bus(host, bus_ops);
+}
+
/*
* Starting point for SD card init.
*/
@@ -629,7 +643,7 @@ 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.
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index fb99ccff9080..7f3093dd2b49 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -195,6 +195,135 @@ static int sdio_enable_hs(struct mmc_card *card)
}
/*
+ * 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.
*/
static void mmc_sdio_remove(struct mmc_host *host)
@@ -243,10 +372,77 @@ 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,
};
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index f61fc2d4cd0a..ff69a2feecd5 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -635,3 +635,52 @@ void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
*err_ret = ret;
}
EXPORT_SYMBOL_GPL(sdio_f0_writeb);
+
+/**
+ * sdio_get_host_pm_caps - get host power management capabilities
+ * @func: SDIO function attached to host
+ *
+ * Returns a capability bitmask corresponding to power management
+ * features supported by the host controller that the card function
+ * might rely upon during a system suspend. The host doesn't need
+ * to be claimed, nor the function active, for this information to be
+ * obtained.
+ */
+mmc_pm_flag_t sdio_get_host_pm_caps(struct sdio_func *func)
+{
+ BUG_ON(!func);
+ BUG_ON(!func->card);
+
+ return func->card->host->pm_caps;
+}
+EXPORT_SYMBOL_GPL(sdio_get_host_pm_caps);
+
+/**
+ * sdio_set_host_pm_flags - set wanted host power management capabilities
+ * @func: SDIO function attached to host
+ *
+ * Set a capability bitmask corresponding to wanted host controller
+ * power management features for the upcoming suspend state.
+ * This must be called, if needed, each time the suspend method of
+ * the function driver is called, and must contain only bits that
+ * were returned by sdio_get_host_pm_caps().
+ * The host doesn't need to be claimed, nor the function active,
+ * for this information to be set.
+ */
+int sdio_set_host_pm_flags(struct sdio_func *func, mmc_pm_flag_t flags)
+{
+ struct mmc_host *host;
+
+ BUG_ON(!func);
+ BUG_ON(!func->card);
+
+ host = func->card->host;
+
+ if (flags & ~host->pm_caps)
+ return -EINVAL;
+
+ /* function suspend methods are serialized, hence no lock needed */
+ host->pm_flags |= flags;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sdio_set_host_pm_flags);
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index 208beeb23ed6..b6304fb8bf90 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -67,6 +67,61 @@ int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
return err;
}
+static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn,
+ unsigned addr, u8 in, u8 *out)
+{
+ struct mmc_command cmd;
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(fn > 7);
+
+ /* sanity check */
+ if (addr & ~0x1FFFF)
+ return -EINVAL;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = SD_IO_RW_DIRECT;
+ cmd.arg = write ? 0x80000000 : 0x00000000;
+ cmd.arg |= fn << 28;
+ cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
+ cmd.arg |= addr << 9;
+ cmd.arg |= in;
+ cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err)
+ return err;
+
+ if (mmc_host_is_spi(host)) {
+ /* host driver already reported errors */
+ } else {
+ if (cmd.resp[0] & R5_ERROR)
+ return -EIO;
+ if (cmd.resp[0] & R5_FUNCTION_NUMBER)
+ return -EINVAL;
+ if (cmd.resp[0] & R5_OUT_OF_RANGE)
+ return -ERANGE;
+ }
+
+ if (out) {
+ if (mmc_host_is_spi(host))
+ *out = (cmd.resp[0] >> 8) & 0xFF;
+ else
+ *out = cmd.resp[0] & 0xFF;
+ }
+
+ return 0;
+}
+
+int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
+ unsigned addr, u8 in, u8 *out)
+{
+ BUG_ON(!card);
+ return mmc_io_rw_direct_host(card->host, write, fn, addr, in, out);
+}
+
int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
{
@@ -134,62 +189,7 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
return 0;
}
-static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn,
- unsigned addr, u8 in, u8 *out)
-{
- struct mmc_command cmd;
- int err;
-
- BUG_ON(!host);
- BUG_ON(fn > 7);
-
- /* sanity check */
- if (addr & ~0x1FFFF)
- return -EINVAL;
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_IO_RW_DIRECT;
- cmd.arg = write ? 0x80000000 : 0x00000000;
- cmd.arg |= fn << 28;
- cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
- cmd.arg |= addr << 9;
- cmd.arg |= in;
- cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
- if (err)
- return err;
-
- if (mmc_host_is_spi(host)) {
- /* host driver already reported errors */
- } else {
- if (cmd.resp[0] & R5_ERROR)
- return -EIO;
- if (cmd.resp[0] & R5_FUNCTION_NUMBER)
- return -EINVAL;
- if (cmd.resp[0] & R5_OUT_OF_RANGE)
- return -ERANGE;
- }
-
- if (out) {
- if (mmc_host_is_spi(host))
- *out = (cmd.resp[0] >> 8) & 0xFF;
- else
- *out = cmd.resp[0] & 0xFF;
- }
-
- return 0;
-}
-
-int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
- unsigned addr, u8 in, u8 *out)
-{
- BUG_ON(!card);
- return mmc_io_rw_direct_host(card->host, write, fn, addr, in, out);
-}
-
-int sdio_go_idle(struct mmc_host *host)
+int sdio_reset(struct mmc_host *host)
{
int ret;
u8 abort;
diff --git a/drivers/mmc/core/sdio_ops.h b/drivers/mmc/core/sdio_ops.h
index 9b546c71eb5e..85c7ecf809f4 100644
--- a/drivers/mmc/core/sdio_ops.h
+++ b/drivers/mmc/core/sdio_ops.h
@@ -18,6 +18,7 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz);
int sdio_go_idle(struct mmc_host *host);
+int sdio_reset(struct mmc_host *host);
#endif
diff --git a/drivers/mmc/host/mx_sdhci.c b/drivers/mmc/host/mx_sdhci.c
index 5a68a8e02fe2..732135308eb6 100644
--- a/drivers/mmc/host/mx_sdhci.c
+++ b/drivers/mmc/host/mx_sdhci.c
@@ -142,32 +142,32 @@ EXPORT_SYMBOL(mxc_mmc_force_detect);
static void sdhci_dumpregs(struct sdhci_host *host)
{
- printk(KERN_DEBUG DRIVER_NAME
+ printk(KERN_INFO DRIVER_NAME
": ============== REGISTER DUMP ==============\n");
- printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n",
readl(host->ioaddr + SDHCI_DMA_ADDRESS),
readl(host->ioaddr + SDHCI_HOST_VERSION));
- printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
(readl(host->ioaddr + SDHCI_BLOCK_SIZE) & 0xFFFF),
(readl(host->ioaddr + SDHCI_BLOCK_COUNT) >> 16));
- printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
readl(host->ioaddr + SDHCI_ARGUMENT),
readl(host->ioaddr + SDHCI_TRANSFER_MODE));
- printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n",
readl(host->ioaddr + SDHCI_PRESENT_STATE),
readl(host->ioaddr + SDHCI_HOST_CONTROL));
- printk(KERN_DEBUG DRIVER_NAME ": Clock: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Clock: 0x%08x\n",
readl(host->ioaddr + SDHCI_CLOCK_CONTROL));
- printk(KERN_DEBUG DRIVER_NAME ": Int stat: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Int stat: 0x%08x\n",
readl(host->ioaddr + SDHCI_INT_STATUS));
- printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
readl(host->ioaddr + SDHCI_INT_ENABLE),
readl(host->ioaddr + SDHCI_SIGNAL_ENABLE));
- printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x\n",
+ printk(KERN_INFO DRIVER_NAME ": Caps: 0x%08x\n",
readl(host->ioaddr + SDHCI_CAPABILITIES));
- printk(KERN_DEBUG DRIVER_NAME
+ printk(KERN_INFO DRIVER_NAME
": ===========================================\n");
}
@@ -506,6 +506,30 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
host->flags &= ~SDHCI_REQ_USE_DMA;
}
+ if (cpu_is_mx25() && (data->blksz * data->blocks < 0x10)) {
+ host->flags &= ~SDHCI_REQ_USE_DMA;
+ DBG("Reverting to PIO in small data transfer.\n");
+ writel(readl(host->ioaddr + SDHCI_INT_ENABLE)
+ | SDHCI_INT_DATA_AVAIL
+ | SDHCI_INT_SPACE_AVAIL,
+ host->ioaddr + SDHCI_INT_ENABLE);
+ writel(readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)
+ | SDHCI_INT_DATA_AVAIL
+ | SDHCI_INT_SPACE_AVAIL,
+ host->ioaddr + SDHCI_SIGNAL_ENABLE);
+ } else if (cpu_is_mx25() && (host->flags & SDHCI_USE_DMA)) {
+ host->flags |= SDHCI_REQ_USE_DMA;
+ DBG("Reverting to DMA in large data transfer.\n");
+ writel(readl(host->ioaddr + SDHCI_INT_ENABLE)
+ & ~(SDHCI_INT_DATA_AVAIL
+ | SDHCI_INT_SPACE_AVAIL),
+ host->ioaddr + SDHCI_INT_ENABLE);
+ writel(readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)
+ & ~(SDHCI_INT_DATA_AVAIL
+ | SDHCI_INT_SPACE_AVAIL),
+ host->ioaddr + SDHCI_SIGNAL_ENABLE);
+ }
+
if (host->flags & SDHCI_REQ_USE_DMA) {
int i;
struct scatterlist *tsg;
@@ -644,7 +668,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
WARN_ON(host->cmd);
/* Wait max 10 ms */
- timeout = 5000;
+ timeout = 500;
mask = SDHCI_CMD_INHIBIT;
if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY))
@@ -695,7 +719,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
mode |= SDHCI_TRNS_READ;
else
mode &= ~SDHCI_TRNS_READ;
- if (host->flags & SDHCI_USE_DMA)
+ if (host->flags & SDHCI_REQ_USE_DMA)
mode |= SDHCI_TRNS_DMA;
if (host->flags & SDHCI_USE_EXTERNAL_DMA)
DBG("Prepare data completely in %s transfer mode.\n",
@@ -727,6 +751,11 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
flags |= SDHCI_CMD_DATA;
mode |= SDHCI_MAKE_CMD(cmd->opcode, flags);
+ if (host->mmc->ios.bus_width & MMC_BUS_WIDTH_DDR) {
+ /* Eanble the DDR mode */
+ mode |= SDHCI_TRNS_DDR_EN;
+ } else
+ mode &= ~SDHCI_TRNS_DDR_EN;
DBG("Complete sending cmd, transfer mode would be 0x%x.\n", mode);
writel(mode, host->ioaddr + SDHCI_TRANSFER_MODE);
}
@@ -775,6 +804,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
int clk_rate = 0;
u32 clk;
unsigned long timeout;
+ struct mmc_ios ios = host->mmc->ios;
if (clock == 0) {
goto out;
@@ -784,17 +814,21 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
host->plat_data->clk_flg = 1;
}
}
- if (clock == host->clock)
+
+ if (clock == host->clock && !(ios.bus_width & MMC_BUS_WIDTH_DDR))
return;
clk_rate = clk_get_rate(host->clk);
clk = readl(host->ioaddr + SDHCI_CLOCK_CONTROL) & ~SDHCI_CLOCK_MASK;
- if (!cpu_is_mx53())
+ if (cpu_is_mx53() || cpu_is_mx50())
+ writel(clk | SDHCI_CLOCK_SDCLKFS1,
+ host->ioaddr + SDHCI_CLOCK_CONTROL);
+ else
writel(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
if (clock == host->min_clk)
prescaler = 16;
- else if (cpu_is_mx53())
+ else if (cpu_is_mx53() || cpu_is_mx50())
prescaler = 1;
else
prescaler = 0;
@@ -820,6 +854,21 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
DBG("prescaler = 0x%x, divider = 0x%x\n", prescaler, div);
clk |= (prescaler << 8) | (div << 4);
+ if (host->plat_data->clk_always_on
+ | (host->mmc->card && mmc_card_sdio(host->mmc->card)))
+ clk |= SDHCI_CLOCK_PER_EN | SDHCI_CLOCK_HLK_EN
+ | SDHCI_CLOCK_IPG_EN;
+ else
+ clk &= ~(SDHCI_CLOCK_PER_EN | SDHCI_CLOCK_HLK_EN
+ | SDHCI_CLOCK_IPG_EN);
+
+ /* Configure the clock delay line */
+ if ((host->plat_data->vendor_ver >= ESDHC_VENDOR_V3)
+ && host->plat_data->dll_override_en)
+ writel((host->plat_data->dll_delay_cells << 10)
+ | DLL_CTRL_SLV_OVERRIDE,
+ host->ioaddr + SDHCI_DLL_CONTROL);
+
/* Configure the clock control register */
clk |=
(readl(host->ioaddr + SDHCI_CLOCK_CONTROL) & (~SDHCI_CLOCK_MASK));
@@ -830,7 +879,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
host->ioaddr + SDHCI_CLOCK_CONTROL);
/* Wait max 10 ms */
- timeout = 5000;
+ timeout = 500;
while (timeout > 0) {
timeout--;
udelay(20);
@@ -933,8 +982,8 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u32 tmp;
mxc_dma_device_t dev_id = 0;
- DBG("%s: clock %u, bus %lu, power %u, vdd %u\n", DRIVER_NAME,
- ios->clock, 1UL << ios->bus_width, ios->power_mode, ios->vdd);
+ DBG("%s: clock %u, bus %u, power %u, vdd %u\n", DRIVER_NAME,
+ ios->clock, ios->bus_width, ios->power_mode, ios->vdd);
host = mmc_priv(mmc);
@@ -1000,10 +1049,10 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
tmp = readl(host->ioaddr + SDHCI_HOST_CONTROL);
- if (ios->bus_width == MMC_BUS_WIDTH_4) {
+ if ((ios->bus_width & ~MMC_BUS_WIDTH_DDR) == MMC_BUS_WIDTH_4) {
tmp &= ~SDHCI_CTRL_8BITBUS;
tmp |= SDHCI_CTRL_4BITBUS;
- } else if (ios->bus_width == MMC_BUS_WIDTH_8) {
+ } else if ((ios->bus_width & ~MMC_BUS_WIDTH_DDR) == MMC_BUS_WIDTH_8) {
tmp &= ~SDHCI_CTRL_4BITBUS;
tmp |= SDHCI_CTRL_8BITBUS;
} else if (ios->bus_width == MMC_BUS_WIDTH_1) {
@@ -1044,7 +1093,7 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct sdhci_host *host;
unsigned long flags;
- u32 ier, prot, clk, present;
+ u32 ier, prot, present;
host = mmc_priv(mmc);
@@ -1057,19 +1106,12 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
if (--(host->sdio_enable))
goto exit_unlock;
}
- /* Enable the clock */
- if (!host->plat_data->clk_flg) {
- clk_enable(host->clk);
- host->plat_data->clk_flg = 1;
- }
- ier = readl(host->ioaddr + SDHCI_SIGNAL_ENABLE);
+
+ ier = readl(host->ioaddr + SDHCI_INT_ENABLE);
prot = readl(host->ioaddr + SDHCI_HOST_CONTROL);
- clk = readl(host->ioaddr + SDHCI_CLOCK_CONTROL);
if (enable) {
ier |= SDHCI_INT_CARD_INT;
- prot |= SDHCI_CTRL_D3CD;
- clk |= SDHCI_CLOCK_PER_EN | SDHCI_CLOCK_IPG_EN;
present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
if ((present & SDHCI_CARD_INT_MASK) != SDHCI_CARD_INT_ID)
writel(SDHCI_INT_CARD_INT,
@@ -1077,12 +1119,24 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
} else {
ier &= ~SDHCI_INT_CARD_INT;
prot &= ~SDHCI_CTRL_D3CD;
- clk &= ~(SDHCI_CLOCK_PER_EN | SDHCI_CLOCK_IPG_EN);
}
writel(prot, host->ioaddr + SDHCI_HOST_CONTROL);
+ writel(ier, host->ioaddr + SDHCI_INT_ENABLE);
writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE);
- writel(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
+
+ /*
+ * Using D3CD to manually driver the HW to re-sample the SDIO interrupt
+ * on bus one more time to guarantee the SDIO interrupt signal sent
+ * from card during the interrupt signal disabled period will not
+ * be lost.
+ */
+ prot |= SDHCI_CTRL_CDSS;
+ writel(prot, host->ioaddr + SDHCI_HOST_CONTROL);
+ prot &= ~SDHCI_CTRL_D3CD;
+ writel(prot, host->ioaddr + SDHCI_HOST_CONTROL);
+ prot |= SDHCI_CTRL_D3CD;
+ writel(prot, host->ioaddr + SDHCI_HOST_CONTROL);
mmiowb();
exit_unlock:
@@ -1208,7 +1262,7 @@ static void sdhci_tasklet_finish(unsigned long param)
* The root cause is that the ROM code don't ensure
* the SD/MMC clk is running when boot system.
* */
- if (!machine_is_mx35_3ds() && req_done && host->plat_data->clk_flg &&
+ if (req_done && host->plat_data->clk_flg &&
!(host->mmc && host->mmc->card && mmc_card_sdio(host->mmc->card))) {
clk_disable(host->clk);
host->plat_data->clk_flg = 0;
@@ -1786,8 +1840,10 @@ static int __devinit sdhci_probe_slot(struct platform_device
/* Get the SDHC clock from clock system APIs */
host->clk = clk_get(&pdev->dev, mmc_plat->clock_mmc);
- if (NULL == host->clk)
+ if (NULL == host->clk) {
printk(KERN_ERR "MXC MMC can't get clock.\n");
+ goto out1;
+ }
DBG("SDHC:%d clock:%lu\n", pdev->id, clk_get_rate(host->clk));
host->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2001,9 +2057,6 @@ static int __devinit sdhci_probe_slot(struct platform_device
}
mxc_dma_callback_set(host->dma, sdhci_dma_irq, (void *)host);
}
-#ifdef CONFIG_MMC_DEBUG
- sdhci_dumpregs(host);
-#endif
mmiowb();
diff --git a/drivers/mmc/host/mx_sdhci.h b/drivers/mmc/host/mx_sdhci.h
index 0bd79934952e..83d02975ecd1 100644
--- a/drivers/mmc/host/mx_sdhci.h
+++ b/drivers/mmc/host/mx_sdhci.h
@@ -2,7 +2,6 @@
* linux/drivers/mmc/host/mx_sdhci.h - Secure Digital Host
* Controller Interface driver
*
- * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
* Copyright (C) 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
@@ -28,6 +27,7 @@
#define SDHCI_TRNS_DMA 0x00000001
#define SDHCI_TRNS_BLK_CNT_EN 0x00000002
#define SDHCI_TRNS_ACMD12 0x00000004
+#define SDHCI_TRNS_DDR_EN 0x00000008
#define SDHCI_TRNS_READ 0x00000010
#define SDHCI_TRNS_MULTI 0x00000020
#define SDHCI_TRNS_DPSEL 0x00200000
@@ -69,6 +69,7 @@
#define SDHCI_CTRL_4BITBUS 0x00000002
#define SDHCI_CTRL_8BITBUS 0x00000004
#define SDHCI_CTRL_HISPD 0x00000004
+#define SDHCI_CTRL_CDSS 0x80
#define SDHCI_CTRL_DMA_MASK 0x18
#define SDHCI_CTRL_SDMA 0x00
#define SDHCI_CTRL_ADMA1 0x08
@@ -95,6 +96,7 @@
#define SDHCI_CLOCK_PER_EN 0x00000004
#define SDHCI_CLOCK_HLK_EN 0x00000002
#define SDHCI_CLOCK_IPG_EN 0x00000001
+#define SDHCI_CLOCK_SDCLKFS1 0x00000100
#define SDHCI_CLOCK_MASK 0x0000FFFF
#define SDHCI_TIMEOUT_CONTROL 0x2E
@@ -188,6 +190,18 @@
#define SDHCI_ADMA_ADDRESS 0x58
/* 60-FB reserved */
+#define SDHCI_DLL_CONTROL 0x60
+#define DLL_CTRL_ENABLE 0x00000001
+#define DLL_CTRL_RESET 0x00000002
+#define DLL_CTRL_SLV_FORCE_UPD 0x00000004
+#define DLL_CTRL_SLV_OVERRIDE 0x00000200
+#define DLL_CTRL_SLV_DLY_TAR 0x00000000
+#define DLL_CTRL_SLV_UP_INT 0x00200000
+#define DLL_CTRL_REF_UP_INT 0x20000000
+
+#define SDHCI_DLL_STATUS 0x64
+#define DLL_STS_SLV_LOCK 0x00000001
+#define DLL_STS_REF_LOCK 0x00000002
/* ADMA Addr Descriptor Attribute Filed */
enum {
@@ -207,6 +221,7 @@ enum {
#define SDHCI_SPEC_100 0
#define SDHCI_SPEC_200 1
#define ESDHC_VENDOR_V22 0x12
+#define ESDHC_VENDOR_V3 0x13
struct sdhci_chip;
diff --git a/drivers/mmc/host/mxc_mmc.c b/drivers/mmc/host/mxc_mmc.c
index 980dc98c9b5f..9cb492f40145 100644
--- a/drivers/mmc/host/mxc_mmc.c
+++ b/drivers/mmc/host/mxc_mmc.c
@@ -13,7 +13,7 @@
*/
/*
- * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
@@ -1232,7 +1232,7 @@ static int mxcmci_probe(struct platform_device *pdev)
mmc->f_max = mmc_plat->max_clk;
mmc->max_req_size = 32 * 1024;
mmc->max_seg_size = mmc->max_req_size;
- mmc->max_blk_count = 65536;
+ mmc->max_blk_count = 32;
spin_lock_init(&host->lock);
host->mmc = mmc;
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index c60352247c49..b7210b7d7af3 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -49,7 +49,7 @@
#define MXS_MMC_DETECT_TIMEOUT (HZ/2)
/* Max value supported for XFER_COUNT */
-#define SSP_BUFFER_SIZE (65536)
+#define SSP_BUFFER_SIZE (65535)
#ifndef BF
#define BF(value, field) (((value) << BP_##field) & BM_##field)
@@ -93,6 +93,9 @@
#define BF_SSP_BLOCK_SIZE_BLOCK_SIZE(v) \
(((v) << 16) & BM_SSP_BLOCK_SIZE_BLOCK_SIZE)
#endif
+#ifndef BM_SSP_CMD0_DBL_DATA_RATE_EN
+#define BM_SSP_CMD0_DBL_DATA_RATE_EN 0x02000000
+#endif
struct mxs_mmc_host {
struct device *dev;
@@ -159,6 +162,7 @@ static inline int mxs_mmc_is_plugged(struct mxs_mmc_host *host)
return !(status & BM_SSP_STATUS_CARD_DETECT);
}
+static void mxs_mmc_reset(struct mxs_mmc_host *host);
/* Card detection polling function */
static void mxs_mmc_detect_poll(unsigned long arg)
{
@@ -167,6 +171,8 @@ static void mxs_mmc_detect_poll(unsigned long arg)
card_status = mxs_mmc_is_plugged(host);
if (card_status != host->present) {
+ /* Reset MMC block */
+ mxs_mmc_reset(host);
host->present = card_status;
mmc_detect_change(host->mmc, 0);
}
@@ -183,6 +189,12 @@ static void mxs_mmc_detect_poll(unsigned long arg)
BM_SSP_CTRL1_RECV_TIMEOUT_IRQ | \
BM_SSP_CTRL1_FIFO_OVERRUN_IRQ)
+#define MXS_MMC_ERR_BITS (BM_SSP_CTRL1_RESP_ERR_IRQ | \
+ BM_SSP_CTRL1_RESP_TIMEOUT_IRQ | \
+ BM_SSP_CTRL1_DATA_TIMEOUT_IRQ | \
+ BM_SSP_CTRL1_DATA_CRC_IRQ | \
+ BM_SSP_CTRL1_RECV_TIMEOUT_IRQ)
+
/* SSP DMA interrupt handler */
static irqreturn_t mmc_irq_handler(int irq, void *dev_id)
{
@@ -198,19 +210,17 @@ static irqreturn_t mmc_irq_handler(int irq, void *dev_id)
/* STOP the dma transfer here. */
mxs_dma_cooked(host->dmach, NULL);
}
- host->status =
- __raw_readl(host->ssp_base + HW_SSP_STATUS);
- if (host->cmd) /* else it is a bogus interrupt */
- complete(&host->dma_done);
+ if ((irq == host->dmairq) || (c1 & MXS_MMC_ERR_BITS))
+ if (host->cmd) {
+ host->status =
+ __raw_readl(host->ssp_base + HW_SSP_STATUS);
+ complete(&host->dma_done);
+ }
- if ((c1 & BM_SSP_CTRL1_SDIO_IRQ) && (c1 & BM_SSP_CTRL1_SDIO_IRQ_EN)) {
- __raw_writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK, host->ssp_base + \
- HW_SSP_CTRL0_CLR);
- __raw_writel(BM_SSP_CTRL1_SDIO_IRQ_EN, host->ssp_base + \
- HW_SSP_CTRL1_CLR);
+ if ((c1 & BM_SSP_CTRL1_SDIO_IRQ) && (c1 & BM_SSP_CTRL1_SDIO_IRQ_EN))
mmc_signal_sdio_irq(host->mmc);
- }
+
return IRQ_HANDLED;
}
@@ -239,6 +249,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
{
struct mmc_command *cmd = host->cmd;
struct mxs_dma_desc *dma_desc = host->dma_desc;
+ unsigned long flags;
dma_desc->cmd.cmd.bits.command = NO_DMA_XFER;
dma_desc->cmd.cmd.bits.irq = 1;
@@ -255,7 +266,8 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
if (host->sdio_irq_en) {
dma_desc->cmd.pio_words[0] |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
- dma_desc->cmd.pio_words[1] |= BM_SSP_CMD0_CONT_CLKING_EN;
+ dma_desc->cmd.pio_words[1] |= BM_SSP_CMD0_CONT_CLKING_EN \
+ | BM_SSP_CMD0_SLOW_CLKING_EN;
}
init_completion(&host->dma_done);
@@ -265,6 +277,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
dev_dbg(host->dev, "%s start DMA.\n", __func__);
if (mxs_dma_enable(host->dmach) < 0)
dev_err(host->dev, "mmc_dma_enable failed\n");
+
wait_for_completion(&host->dma_done);
cmd->error = mxs_mmc_cmd_error(host->status);
@@ -273,6 +286,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
dev_dbg(host->dev, "Command error 0x%x\n", cmd->error);
mxs_dma_reset(host->dmach);
}
+ mxs_dma_disable(host->dmach);
}
/* Send the ac command to the device */
@@ -284,6 +298,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
u32 ssp_ctrl0;
u32 ssp_cmd0;
u32 ssp_cmd1;
+ unsigned long flags;
ignore_crc = (mmc_resp_type(cmd) & MMC_RSP_CRC) ?
0 : BM_SSP_CTRL0_IGNORE_CRC;
@@ -305,7 +320,8 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
if (host->sdio_irq_en) {
ssp_ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
- ssp_cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN;
+ ssp_cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN \
+ | BM_SSP_CMD0_SLOW_CLKING_EN;
}
dma_desc->cmd.pio_words[0] = ssp_ctrl0;
@@ -356,6 +372,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
dev_dbg(host->dev, "Command error 0x%x\n", cmd->error);
mxs_dma_reset(host->dmach);
}
+ mxs_dma_disable(host->dmach);
}
/* Copy data between sg list and dma buffer */
@@ -451,6 +468,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
u32 data_size = cmd->data->blksz * cmd->data->blocks;
u32 log2_block_size;
+ unsigned long flags;
ignore_crc = mmc_resp_type(cmd) & MMC_RSP_CRC ? 0 : 1;
resp = mmc_resp_type(cmd) & MMC_RSP_PRESENT ? 1 : 0;
@@ -540,6 +558,9 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
dev_dbg(host->dev, "%s blksz is 0x%x.\n", __func__, log2_block_size);
if (ssp_ver_major > 3) {
+ /* Configure the CMD0 */
+ ssp_cmd0 = BF(cmd->opcode, SSP_CMD0_CMD);
+
/* Configure the BLOCK SIZE and BLOCK COUNT */
if ((1<<log2_block_size) != cmd->data->blksz) {
BUG_ON(cmd->data->blocks > 1);
@@ -548,20 +569,32 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
val = BF(log2_block_size, SSP_BLOCK_SIZE_BLOCK_SIZE) |
BF(cmd->data->blocks - 1, SSP_BLOCK_SIZE_BLOCK_COUNT);
__raw_writel(val, host->ssp_base + HW_SSP_BLOCK_SIZE);
- }
- /* Configure the CMD0 */
- ssp_cmd0 = BF(cmd->opcode, SSP_CMD0_CMD);
- } else
- ssp_cmd0 =
- BF(log2_block_size, SSP_BLOCK_SIZE_BLOCK_SIZE) |
- BF(cmd->opcode, SSP_CMD0_CMD) |
- BF(cmd->data->blocks - 1, SSP_BLOCK_SIZE_BLOCK_COUNT);
+ if (host->mmc->ios.bus_width & MMC_BUS_WIDTH_DDR)
+ /* Enable the DDR mode */
+ ssp_cmd0 |= BM_SSP_CMD0_DBL_DATA_RATE_EN;
+ else
+ ssp_cmd0 &= ~BM_SSP_CMD0_DBL_DATA_RATE_EN;
+ }
+ } else {
+ if ((1<<log2_block_size) != cmd->data->blksz) {
+ BUG_ON(cmd->data->blocks > 1);
+ ssp_cmd0 =
+ BF(0, SSP_BLOCK_SIZE_BLOCK_SIZE) |
+ BF(cmd->opcode, SSP_CMD0_CMD) |
+ BF(0, SSP_BLOCK_SIZE_BLOCK_COUNT);
+ } else
+ ssp_cmd0 =
+ BF(log2_block_size, SSP_BLOCK_SIZE_BLOCK_SIZE) |
+ BF(cmd->opcode, SSP_CMD0_CMD) |
+ BF(cmd->data->blocks - 1, SSP_BLOCK_SIZE_BLOCK_COUNT);
+ }
if (host->sdio_irq_en) {
ssp_ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
- ssp_cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN;
+ ssp_cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN \
+ | BM_SSP_CMD0_SLOW_CLKING_EN;
}
- if (cmd->opcode == 12)
+ if ((cmd->opcode == 12) || (cmd->opcode == 53))
ssp_cmd0 |= BM_SSP_CMD0_APPEND_8CYC;
ssp_cmd1 = BF(cmd->arg, SSP_CMD1_CMD_ARG);
@@ -628,6 +661,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
dev_dbg(host->dev, "Transferred %u bytes\n",
cmd->data->bytes_xfered);
}
+ mxs_dma_disable(host->dmach);
}
/* Begin sedning a command to the card */
@@ -672,6 +706,13 @@ static void mxs_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
dev_dbg(host->dev, "MMC request\n");
+ if (!host->present) {
+ mrq->cmd->error = -ETIMEDOUT;
+ mmc_request_done(mmc, mrq);
+ return;
+ }
+
+ BUG_ON(host->mrq != NULL);
host->mrq = mrq;
mxs_mmc_start_cmd(host, mrq->cmd);
@@ -777,9 +818,9 @@ static void mxs_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
dev_warn(host->dev,
"Platform does not support CMD pin pullup control\n");
- if (ios->bus_width == MMC_BUS_WIDTH_8)
+ if ((ios->bus_width & ~MMC_BUS_WIDTH_DDR) == MMC_BUS_WIDTH_8)
host->bus_width = 2;
- else if (ios->bus_width == MMC_BUS_WIDTH_4)
+ else if ((ios->bus_width & ~MMC_BUS_WIDTH_DDR) == MMC_BUS_WIDTH_4)
host->bus_width = 1;
else
host->bus_width = 0;
@@ -851,7 +892,6 @@ static void mxs_mmc_reset(struct mxs_mmc_host *host)
/* Configure SSP Control Register 1 */
ssp_ctrl1 =
BM_SSP_CTRL1_DMA_ENABLE |
- BM_SSP_CTRL1_POLARITY |
BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN |
BM_SSP_CTRL1_DATA_CRC_IRQ_EN |
BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN |
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-26 07:25:11 +0000