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path: root/drivers/mmc/wbsd.c
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Diffstat (limited to 'drivers/mmc/wbsd.c')
-rw-r--r--drivers/mmc/wbsd.c84
1 files changed, 50 insertions, 34 deletions
diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index b7fbd30..974f2f3 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -42,7 +42,7 @@
#include "wbsd.h"
#define DRIVER_NAME "wbsd"
-#define DRIVER_VERSION "1.2"
+#define DRIVER_VERSION "1.3"
#ifdef CONFIG_MMC_DEBUG
#define DBG(x...) \
@@ -54,28 +54,6 @@
#define DBGF(x...) do { } while (0)
#endif
-#ifdef CONFIG_MMC_DEBUG
-void DBG_REG(int reg, u8 value)
-{
- int i;
-
- printk(KERN_DEBUG "wbsd: Register %d: 0x%02X %3d '%c' ",
- reg, (int)value, (int)value, (value < 0x20)?'.':value);
-
- for (i = 7;i >= 0;i--)
- {
- if (value & (1 << i))
- printk("x");
- else
- printk(".");
- }
-
- printk("\n");
-}
-#else
-#define DBG_REG(r, v) do {} while (0)
-#endif
-
/*
* Device resources
*/
@@ -92,6 +70,13 @@ MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
#endif /* CONFIG_PNP */
+static const int config_ports[] = { 0x2E, 0x4E };
+static const int unlock_codes[] = { 0x83, 0x87 };
+
+static const int valid_ids[] = {
+ 0x7112,
+ };
+
#ifdef CONFIG_PNP
static unsigned int nopnp = 0;
#else
@@ -1051,10 +1036,24 @@ static struct mmc_host_ops wbsd_ops = {
\*****************************************************************************/
/*
+ * Helper function for card detection
+ */
+static void wbsd_detect_card(unsigned long data)
+{
+ struct wbsd_host *host = (struct wbsd_host*)data;
+
+ BUG_ON(host == NULL);
+
+ DBG("Executing card detection\n");
+
+ mmc_detect_change(host->mmc);
+}
+
+/*
* Tasklets
*/
-inline static struct mmc_data* wbsd_get_data(struct wbsd_host* host)
+static inline struct mmc_data* wbsd_get_data(struct wbsd_host* host)
{
WARN_ON(!host->mrq);
if (!host->mrq)
@@ -1075,7 +1074,6 @@ static void wbsd_tasklet_card(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
u8 csr;
- int change = 0;
spin_lock(&host->lock);
@@ -1094,14 +1092,20 @@ static void wbsd_tasklet_card(unsigned long param)
{
DBG("Card inserted\n");
host->flags |= WBSD_FCARD_PRESENT;
- change = 1;
+
+ /*
+ * Delay card detection to allow electrical connections
+ * to stabilise.
+ */
+ mod_timer(&host->timer, jiffies + HZ/2);
}
+
+ spin_unlock(&host->lock);
}
else if (host->flags & WBSD_FCARD_PRESENT)
{
DBG("Card removed\n");
host->flags &= ~WBSD_FCARD_PRESENT;
- change = 1;
if (host->mrq)
{
@@ -1112,15 +1116,14 @@ static void wbsd_tasklet_card(unsigned long param)
host->mrq->cmd->error = MMC_ERR_FAILED;
tasklet_schedule(&host->finish_tasklet);
}
- }
-
- /*
- * Unlock first since we might get a call back.
- */
- spin_unlock(&host->lock);
+
+ /*
+ * Unlock first since we might get a call back.
+ */
+ spin_unlock(&host->lock);
- if (change)
mmc_detect_change(host->mmc);
+ }
}
static void wbsd_tasklet_fifo(unsigned long param)
@@ -1325,6 +1328,13 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
spin_lock_init(&host->lock);
/*
+ * Set up detection timer
+ */
+ init_timer(&host->timer);
+ host->timer.data = (unsigned long)host;
+ host->timer.function = wbsd_detect_card;
+
+ /*
* Maximum number of segments. Worst case is one sector per segment
* so this will be 64kB/512.
*/
@@ -1351,11 +1361,17 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
static void __devexit wbsd_free_mmc(struct device* dev)
{
struct mmc_host* mmc;
+ struct wbsd_host* host;
mmc = dev_get_drvdata(dev);
if (!mmc)
return;
+ host = mmc_priv(mmc);
+ BUG_ON(host == NULL);
+
+ del_timer_sync(&host->timer);
+
mmc_free_host(mmc);
dev_set_drvdata(dev, NULL);