#include "core.h"
#include "bus.h"
#include "host.h"
+#include "sdio_bus.h"
#include "mmc_ops.h"
#include "sd_ops.h"
+#include "sdio_ops.h"
extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
extern int mmc_attach_sd(struct mmc_host *host, u32 ocr);
+extern int mmc_attach_sdio(struct mmc_host *host, u32 ocr);
static struct workqueue_struct *workqueue;
"tsac %d ms nsac %d\n",
mmc_hostname(host), mrq->data->blksz,
mrq->data->blocks, mrq->data->flags,
- mrq->data->timeout_ns / 10000000,
+ mrq->data->timeout_ns / 1000000,
mrq->data->timeout_clks);
}
{
unsigned int mult;
+ /*
+ * SDIO cards only define an upper 1 s limit on access.
+ */
+ if (mmc_card_sdio(card)) {
+ data->timeout_ns = 1000000000;
+ data->timeout_clks = 0;
+ return;
+ }
+
/*
* SD cards use a 100 multiplier rather than 10
*/
EXPORT_SYMBOL(mmc_set_data_timeout);
/**
- * mmc_claim_host - exclusively claim a host
+ * __mmc_claim_host - exclusively claim a host
* @host: mmc host to claim
+ * @abort: whether or not the operation should be aborted
*
- * Claim a host for a set of operations.
+ * Claim a host for a set of operations. If @abort is non null and
+ * dereference a non-zero value then this will return prematurely with
+ * that non-zero value without acquiring the lock. Returns zero
+ * with the lock held otherwise.
*/
-void mmc_claim_host(struct mmc_host *host)
+int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
{
DECLARE_WAITQUEUE(wait, current);
unsigned long flags;
+ int stop;
might_sleep();
spin_lock_irqsave(&host->lock, flags);
while (1) {
set_current_state(TASK_UNINTERRUPTIBLE);
- if (!host->claimed)
+ stop = abort ? atomic_read(abort) : 0;
+ if (stop || !host->claimed)
break;
spin_unlock_irqrestore(&host->lock, flags);
schedule();
spin_lock_irqsave(&host->lock, flags);
}
set_current_state(TASK_RUNNING);
- host->claimed = 1;
+ if (!stop)
+ host->claimed = 1;
+ else
+ wake_up(&host->wq);
spin_unlock_irqrestore(&host->lock, flags);
remove_wait_queue(&host->wq, &wait);
+ return stop;
}
-EXPORT_SYMBOL(mmc_claim_host);
+EXPORT_SYMBOL(__mmc_claim_host);
/**
* mmc_release_host - release a host
mmc_send_if_cond(host, host->ocr_avail);
+ /*
+ * First we search for SDIO...
+ */
+ err = mmc_send_io_op_cond(host, 0, &ocr);
+ if (!err) {
+ if (mmc_attach_sdio(host, ocr))
+ mmc_power_off(host);
+ return;
+ }
+
+ /*
+ * ...then normal SD...
+ */
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
- } else {
- /*
- * If we fail to detect any SD cards then try
- * searching for MMC cards.
- */
- err = mmc_send_op_cond(host, 0, &ocr);
- if (!err) {
- if (mmc_attach_mmc(host, ocr))
- mmc_power_off(host);
- } else {
+ return;
+ }
+
+ /*
+ * ...and finally MMC.
+ */
+ err = mmc_send_op_cond(host, 0, &ocr);
+ if (!err) {
+ if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
- mmc_release_host(host);
- }
+ return;
}
+
+ mmc_release_host(host);
+ mmc_power_off(host);
} else {
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
return -ENOMEM;
ret = mmc_register_bus();
- if (ret == 0) {
- ret = mmc_register_host_class();
- if (ret)
- mmc_unregister_bus();
- }
+ if (ret)
+ goto destroy_workqueue;
+
+ ret = mmc_register_host_class();
+ if (ret)
+ goto unregister_bus;
+
+ ret = sdio_register_bus();
+ if (ret)
+ goto unregister_host_class;
+
+ return 0;
+
+unregister_host_class:
+ mmc_unregister_host_class();
+unregister_bus:
+ mmc_unregister_bus();
+destroy_workqueue:
+ destroy_workqueue(workqueue);
+
return ret;
}
static void __exit mmc_exit(void)
{
+ sdio_unregister_bus();
mmc_unregister_host_class();
mmc_unregister_bus();
destroy_workqueue(workqueue);
}
-module_init(mmc_init);
+subsys_initcall(mmc_init);
module_exit(mmc_exit);
MODULE_LICENSE("GPL");