#include "wbsd.h"
#define DRIVER_NAME "wbsd"
-#define DRIVER_VERSION "1.2"
+#define DRIVER_VERSION "1.4"
#ifdef CONFIG_MMC_DEBUG
#define DBG(x...) \
#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
*/
#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
struct wbsd_host* host = mmc_priv(mmc);
u8 clk, setup, pwr;
- DBGF("clock %uHz busmode %u powermode %u Vdd %u\n",
- ios->clock, ios->bus_mode, ios->power_mode, ios->vdd);
+ DBGF("clock %uHz busmode %u powermode %u cs %u Vdd %u\n",
+ ios->clock, ios->bus_mode, ios->power_mode, ios->chip_select,
+ ios->vdd);
spin_lock_bh(&host->lock);
/*
* MMC cards need to have pin 1 high during init.
- * Init time corresponds rather nicely with the bus mode.
* It wreaks havoc with the card detection though so
- * that needs to be disabed.
+ * that needs to be disabled.
*/
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
- if ((ios->power_mode == MMC_POWER_ON) &&
- (ios->bus_mode == MMC_BUSMODE_OPENDRAIN))
+ if (ios->chip_select == MMC_CS_HIGH)
{
setup |= WBSD_DAT3_H;
host->flags |= WBSD_FIGNORE_DETECT;
else
{
setup &= ~WBSD_DAT3_H;
- host->flags &= ~WBSD_FIGNORE_DETECT;
+
+ /*
+ * We cannot resume card detection immediatly
+ * because of capacitance and delays in the chip.
+ */
+ mod_timer(&host->ignore_timer, jiffies + HZ/100);
}
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
* *
\*****************************************************************************/
+/*
+ * Helper function to reset detection ignore
+ */
+
+static void wbsd_reset_ignore(unsigned long data)
+{
+ struct wbsd_host *host = (struct wbsd_host*)data;
+
+ BUG_ON(host == NULL);
+
+ DBG("Resetting card detection ignore\n");
+
+ spin_lock_bh(&host->lock);
+
+ host->flags &= ~WBSD_FIGNORE_DETECT;
+
+ /*
+ * Card status might have changed during the
+ * blackout.
+ */
+ tasklet_schedule(&host->card_tasklet);
+
+ spin_unlock_bh(&host->lock);
+}
+
+/*
+ * 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)
{
struct wbsd_host* host = (struct wbsd_host*)param;
u8 csr;
- int change = 0;
spin_lock(&host->lock);
{
DBG("Card inserted\n");
host->flags |= WBSD_FCARD_PRESENT;
- change = 1;
+
+ /*
+ * Delay card detection to allow electrical connections
+ * to stabilise.
+ */
+ mod_timer(&host->detect_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)
{
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);
+ }
+ else
+ spin_unlock(&host->lock);
}
static void wbsd_tasklet_fifo(unsigned long param)
spin_lock_init(&host->lock);
+ /*
+ * Set up timers
+ */
+ init_timer(&host->detect_timer);
+ host->detect_timer.data = (unsigned long)host;
+ host->detect_timer.function = wbsd_detect_card;
+
+ init_timer(&host->ignore_timer);
+ host->ignore_timer.data = (unsigned long)host;
+ host->ignore_timer.function = wbsd_reset_ignore;
+
/*
* Maximum number of segments. Worst case is one sector per segment
* so this will be 64kB/512.
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->ignore_timer);
+ del_timer_sync(&host->detect_timer);
+
mmc_free_host(mmc);
dev_set_drvdata(dev, NULL);
mmc_add_host(mmc);
- printk(KERN_INFO "%s: W83L51xD", mmc->host_name);
+ printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc));
if (host->chip_id != 0)
printk(" id %x", (int)host->chip_id);
printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);