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authorDirk Brandewie <dirk.j.brandewie@intel.com>2009-05-12 07:54:00 -0700
committerInaky Perez-Gonzalez <inaky@linux.intel.com>2009-06-11 03:30:20 -0700
commit10b1de6b774a531c9054ee01e734a85ffbab179e (patch)
treeb56c38c7953faca21b1f4aee6709d5d3acfd3956
parentead68239913cb9c19150facf1656517f81d66fcb (diff)
wimax/i2400m/sdio: Implement I2400M_RT_BUS reset type
This reset type causes the WiMAX function to be disabled and re-enabled, which will force the WiMAX device to reset and enter boot mode. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
-rw-r--r--drivers/net/wimax/i2400m/i2400m-sdio.h2
-rw-r--r--drivers/net/wimax/i2400m/sdio.c20
2 files changed, 19 insertions, 3 deletions
diff --git a/drivers/net/wimax/i2400m/i2400m-sdio.h b/drivers/net/wimax/i2400m/i2400m-sdio.h
index 08c2fb73923..207172165ba 100644
--- a/drivers/net/wimax/i2400m/i2400m-sdio.h
+++ b/drivers/net/wimax/i2400m/i2400m-sdio.h
@@ -78,6 +78,8 @@ enum {
/* The number of ticks to wait for the device to signal that
* it is ready */
I2400MS_INIT_SLEEP_INTERVAL = 10,
+ /* How long to wait for the device to settle after reset */
+ I2400MS_SETTLE_TIME = 40,
};
diff --git a/drivers/net/wimax/i2400m/sdio.c b/drivers/net/wimax/i2400m/sdio.c
index 777c981676f..d6fac5ccf93 100644
--- a/drivers/net/wimax/i2400m/sdio.c
+++ b/drivers/net/wimax/i2400m/sdio.c
@@ -255,7 +255,7 @@ error_kzalloc:
static
int i2400ms_bus_reset(struct i2400m *i2400m, enum i2400m_reset_type rt)
{
- int result;
+ int result = 0;
struct i2400ms *i2400ms =
container_of(i2400m, struct i2400ms, i2400m);
struct device *dev = i2400m_dev(i2400m);
@@ -280,8 +280,22 @@ int i2400ms_bus_reset(struct i2400m *i2400m, enum i2400m_reset_type rt)
sizeof(i2400m_COLD_BOOT_BARKER));
else if (rt == I2400M_RT_BUS) {
do_bus_reset:
- dev_err(dev, "FIXME: SDIO bus reset not implemented\n");
- result = rt == I2400M_RT_WARM ? -ENODEV : -ENOSYS;
+ /* call netif_tx_disable() before sending IOE disable,
+ * so that all the tx from network layer are stopped
+ * while IOE is being reset. Make sure it is called
+ * only after register_netdev() was issued.
+ */
+ if (i2400m->wimax_dev.net_dev->reg_state == NETREG_REGISTERED)
+ netif_tx_disable(i2400m->wimax_dev.net_dev);
+
+ sdio_claim_host(i2400ms->func);
+ sdio_disable_func(i2400ms->func);
+ sdio_release_host(i2400ms->func);
+
+ /* Wait for the device to settle */
+ msleep(40);
+
+ result = i2400ms_enable_function(i2400ms->func);
} else
BUG();
if (result < 0 && rt != I2400M_RT_BUS) {