summaryrefslogtreecommitdiff
path: root/drivers/mmc/core
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-05 10:18:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-05 10:18:21 -0700
commit0a053e8c71d666daf30da2d407147b1293923d8b (patch)
tree9ba3967845db9053cb2ca045f01a9454eb5e6230 /drivers/mmc/core
parent601cc11d054ae4b5e9b5babec3d8e4667a2cb9b5 (diff)
parent32ab83a56fdf42f543b86c349143c2a86ead9707 (diff)
downloadlinux-0a053e8c71d666daf30da2d407147b1293923d8b.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (42 commits) atmel-mci: fix sdc_reg typo tmio_mmc: add maintainer mmc: Add OpenFirmware bindings for SDHCI driver sdhci: Add quirk for forcing maximum block size to 2048 bytes sdhci: Add quirk for controllers that need IRQ re-init after reset sdhci: Add quirk for controllers that need small delays for PIO sdhci: Add set_clock callback and a quirk for nonstandard clocks sdhci: Add get_{max,timeout}_clock callbacks sdhci: Add support for hosts reporting inverted write-protect state sdhci: Add support for card-detection polling sdhci: Enable only relevant (DMA/PIO) interrupts during transfers sdhci: Split card-detection IRQs management from sdhci_init() sdhci: Add support for bus-specific IO memory accessors mmc_spi: adjust for delayed data token response omap_hsmmc: Wait for SDBP omap_hsmmc: Fix MMC3 dma omap_hsmmc: Disable SDBP at suspend omap_hsmmc: Do not prefix slot name omap_hsmmc: Allow cover switch to cause rescan omap_hsmmc: Add 8-bit bus width mode support ...
Diffstat (limited to 'drivers/mmc/core')
-rw-r--r--drivers/mmc/core/bus.c8
-rw-r--r--drivers/mmc/core/core.c18
-rw-r--r--drivers/mmc/core/debugfs.c67
-rw-r--r--drivers/mmc/core/sdio_cis.c8
-rw-r--r--drivers/mmc/core/sdio_ops.c8
5 files changed, 109 insertions, 0 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index f210a8ee6861..bdb165f93046 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -84,6 +84,14 @@ mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
}
retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
+ if (retval)
+ return retval;
+
+ /*
+ * Request the mmc_block device. Note: that this is a direct request
+ * for the module it carries no information as to what is inserted.
+ */
+ retval = add_uevent_var(env, "MODALIAS=mmc:block");
return retval;
}
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 1445ea8f10a6..fa073ab3fa34 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -298,6 +298,21 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
data->timeout_clks = 0;
}
}
+ /*
+ * Some cards need very high timeouts if driven in SPI mode.
+ * The worst observed timeout was 900ms after writing a
+ * continuous stream of data until the internal logic
+ * overflowed.
+ */
+ if (mmc_host_is_spi(card->host)) {
+ if (data->flags & MMC_DATA_WRITE) {
+ if (data->timeout_ns < 1000000000)
+ data->timeout_ns = 1000000000; /* 1s */
+ } else {
+ if (data->timeout_ns < 100000000)
+ data->timeout_ns = 100000000; /* 100ms */
+ }
+ }
}
EXPORT_SYMBOL(mmc_set_data_timeout);
@@ -915,6 +930,7 @@ void mmc_stop_host(struct mmc_host *host)
spin_unlock_irqrestore(&host->lock, flags);
#endif
+ cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
@@ -942,6 +958,7 @@ void mmc_stop_host(struct mmc_host *host)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
+ cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
@@ -975,6 +992,7 @@ int mmc_resume_host(struct mmc_host *host)
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);
}
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 1237bb4c722b..610dbd1fcc82 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -184,6 +184,68 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get,
NULL, "%08llx\n");
+#define EXT_CSD_STR_LEN 1025
+
+static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
+{
+ struct mmc_card *card = inode->i_private;
+ char *buf;
+ ssize_t n = 0;
+ u8 *ext_csd;
+ int err, i;
+
+ buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ mmc_release_host(card->host);
+ if (err)
+ goto out_free;
+
+ for (i = 511; i >= 0; i--)
+ n += sprintf(buf + n, "%02x", ext_csd[i]);
+ n += sprintf(buf + n, "\n");
+ BUG_ON(n != EXT_CSD_STR_LEN);
+
+ filp->private_data = buf;
+ kfree(ext_csd);
+ return 0;
+
+out_free:
+ kfree(buf);
+ kfree(ext_csd);
+ return err;
+}
+
+static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf,
+ size_t cnt, loff_t *ppos)
+{
+ char *buf = filp->private_data;
+
+ return simple_read_from_buffer(ubuf, cnt, ppos,
+ buf, EXT_CSD_STR_LEN);
+}
+
+static int mmc_ext_csd_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static struct file_operations mmc_dbg_ext_csd_fops = {
+ .open = mmc_ext_csd_open,
+ .read = mmc_ext_csd_read,
+ .release = mmc_ext_csd_release,
+};
+
void mmc_add_card_debugfs(struct mmc_card *card)
{
struct mmc_host *host = card->host;
@@ -211,6 +273,11 @@ void mmc_add_card_debugfs(struct mmc_card *card)
&mmc_dbg_card_status_fops))
goto err;
+ if (mmc_card_mmc(card))
+ if (!debugfs_create_file("ext_csd", S_IRUSR, root, card,
+ &mmc_dbg_ext_csd_fops))
+ goto err;
+
return;
err:
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 956bd7677502..963f2937c5e3 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -223,10 +223,18 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
if (tpl_code == 0xff)
break;
+ /* null entries have no link field or data */
+ if (tpl_code == 0x00)
+ continue;
+
ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
if (ret)
break;
+ /* a size of 0xff also means we're done */
+ if (tpl_link == 0xff)
+ break;
+
this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
if (!this)
return -ENOMEM;
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index c8fa095a4488..4eb7825fd1a7 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -76,6 +76,10 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
BUG_ON(!card);
BUG_ON(fn > 7);
+ /* sanity check */
+ if (addr & ~0x1FFFF)
+ return -EINVAL;
+
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_IO_RW_DIRECT;
@@ -125,6 +129,10 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
WARN_ON(blocks == 0);
WARN_ON(blksz == 0);
+ /* sanity check */
+ if (addr & ~0x1FFFF)
+ return -EINVAL;
+
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));