void wifi_ctrlfunc_unregister_drv(void)
{
struct device *dev1, *dev2;
dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
if (!dts_enabled)
if (dev1 == NULL && dev2 == NULL)
return;
DHD_ERROR(("unregister wifi platform drivers\n"));
if (dev1)
platform_driver_unregister(&wifi_platform_dev_driver);
if (dev2)
platform_driver_unregister(&wifi_platform_dev_driver_legacy);
if (dts_enabled) {
wifi_adapter_info_t *adapter;
adapter = &dhd_wifi_platdata->adapters[0];
if (is_power_on) {
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
}
}
kfree(dhd_wifi_platdata->adapters);
dhd_wifi_platdata->adapters = NULL;
dhd_wifi_platdata->num_adapters = 0;
kfree(dhd_wifi_platdata);
dhd_wifi_platdata = NULL;
}
static int bcmdhd_wifi_plat_dev_drv_remove(struct platform_device *pdev)
{
int i;
wifi_adapter_info_t *adapter;
ASSERT(dhd_wifi_platdata != NULL);
/* power down all adapters */
for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
adapter = &dhd_wifi_platdata->adapters[i];
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
}
return 0;
}
static int wifi_plat_dev_drv_remove(struct platform_device *pdev)
{
wifi_adapter_info_t *adapter;
/* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
* is kept for backward compatibility and supports only 1 adapter
*/
ASSERT(dhd_wifi_platdata != NULL);
ASSERT(dhd_wifi_platdata->num_adapters == 1);
adapter = &dhd_wifi_platdata->adapters[0];
if (is_power_on) {
#ifdef BCMPCIE
wifi_platform_bus_enumerate(adapter, FALSE);
OSL_SLEEP(100);
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
#else
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
#endif /* BCMPCIE */
}
return 0;
}
static int dhd_wifi_platform_load()
{
int err = 0;
/* As chipset is power down after the register_netdev(),
* there is a race condition where an app can trigger a dhd_open()
* before the end power down done sequence.
* Use a semaphore to handle this race condtion
*/
dhd_wifi_platform_load_lock();
wl_android_init();
if ((err = dhd_wifi_platform_load_usb()))
goto end;
else if ((err = dhd_wifi_platform_load_sdio()))
goto end;
else
err = dhd_wifi_platform_load_pcie();
end:
if (err)
wl_android_exit();
else
wl_android_post_init();
if (!dhd_download_fw_on_driverload) {
wifi_adapter_info_t *adapter;
adapter = &dhd_wifi_platdata->adapters[0];
if (is_power_on) {
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
}
}
dhd_wifi_platform_load_unlock();
return err;
}
void wifi_ctrlfunc_unregister_drv(void)
{
#if defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
DHD_ERROR(("unregister wifi platform drivers\n"));
platform_driver_unregister(&wifi_platform_dev_driver);
#else
#ifndef CUSTOMER_HW
struct device *dev1, *dev2;
dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
if (!dts_enabled)
if (dev1 == NULL && dev2 == NULL)
return;
#endif
DHD_ERROR(("unregister wifi platform drivers\n"));
#ifndef CUSTOMER_HW
if (dev1)
platform_driver_unregister(&wifi_platform_dev_driver);
if (dev2)
platform_driver_unregister(&wifi_platform_dev_driver_legacy);
#endif
if (dts_enabled) {
wifi_adapter_info_t *adapter;
adapter = &dhd_wifi_platdata->adapters[0];
if (is_power_on) {
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
}
wifi_platform_bus_enumerate(adapter, FALSE);
}
#endif /* !defined(CONFIG_DTS) */
kfree(dhd_wifi_platdata->adapters);
dhd_wifi_platdata->adapters = NULL;
dhd_wifi_platdata->num_adapters = 0;
kfree(dhd_wifi_platdata);
dhd_wifi_platdata = NULL;
}
static int dhd_wifi_platform_load_sdio(void)
{
int i;
int err = 0;
wifi_adapter_info_t *adapter;
BCM_REFERENCE(i);
BCM_REFERENCE(adapter);
/* Sanity check on the module parameters
* - Both watchdog and DPC as tasklets are ok
* - If both watchdog and DPC are threads, TX must be deferred
*/
if (!(dhd_watchdog_prio < 0 && dhd_dpc_prio < 0) &&
!(dhd_watchdog_prio >= 0 && dhd_dpc_prio >= 0 && dhd_deferred_tx))
return -EINVAL;
#if defined(BCMLXSDMMC)
if (dhd_wifi_platdata == NULL) {
DHD_ERROR(("DHD wifi platform data is required for Android build\n"));
return -EINVAL;
}
sema_init(&dhd_registration_sem, 0);
/* power up all adapters */
for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
bool chip_up = FALSE;
int retry = POWERUP_MAX_RETRY;
struct semaphore dhd_chipup_sem;
adapter = &dhd_wifi_platdata->adapters[i];
DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
adapter->bus_type, adapter->bus_num, adapter->slot_num));
do {
sema_init(&dhd_chipup_sem, 0);
err = dhd_bus_reg_sdio_notify(&dhd_chipup_sem);
if (err) {
DHD_ERROR(("%s dhd_bus_reg_sdio_notify fail(%d)\n\n",
__FUNCTION__, err));
return err;
}
err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
if (err) {
/* WL_REG_ON state unknown, Power off forcely */
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
continue;
} else {
wifi_platform_bus_enumerate(adapter, TRUE);
err = 0;
}
if (down_timeout(&dhd_chipup_sem, msecs_to_jiffies(POWERUP_WAIT_MS)) == 0) {
dhd_bus_unreg_sdio_notify();
chip_up = TRUE;
break;
}
DHD_ERROR(("failed to power up %s, %d retry left\n", adapter->name, retry));
dhd_bus_unreg_sdio_notify();
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
} while (retry--);
if (!chip_up) {
DHD_ERROR(("failed to power up %s, max retry reached**\n", adapter->name));
return -ENODEV;
}
}
err = dhd_bus_register();
if (err) {
DHD_ERROR(("%s: sdio_register_driver failed\n", __FUNCTION__));
goto fail;
}
/*
* Wait till MMC sdio_register_driver callback called and made driver attach.
* It's needed to make sync up exit from dhd insmod and
* Kernel MMC sdio device callback registration
*/
err = down_timeout(&dhd_registration_sem, msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
if (err) {
DHD_ERROR(("%s: sdio_register_driver timeout or error \n", __FUNCTION__));
dhd_bus_unregister();
goto fail;
}
return err;
fail:
/* power down all adapters */
for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
adapter = &dhd_wifi_platdata->adapters[i];
wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
wifi_platform_bus_enumerate(adapter, FALSE);
}
#else
/* x86 bring-up PC needs no power-up operations */
err = dhd_bus_register();
#endif
return err;
}
static int dhd_wifi_platform_load_pcie(void)
{
int err = 0;
int i;
wifi_adapter_info_t *adapter;
BCM_REFERENCE(i);
BCM_REFERENCE(adapter);
if (dhd_wifi_platdata == NULL) {
err = dhd_bus_register();
} else {
if (dhd_download_fw_on_driverload) {
/* power up all adapters */
for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
int retry = POWERUP_MAX_RETRY;
adapter = &dhd_wifi_platdata->adapters[i];
DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
adapter->irq_num, adapter->intr_flags, adapter->fw_path,
adapter->nv_path));
DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
adapter->bus_type, adapter->bus_num, adapter->slot_num));
do {
err = wifi_platform_set_power(adapter,
TRUE, WIFI_TURNON_DELAY);
if (err) {
DHD_ERROR(("failed to power up %s,"
" %d retry left\n",
adapter->name, retry));
/* WL_REG_ON state unknown, Power off forcely */
wifi_platform_set_power(adapter,
FALSE, WIFI_TURNOFF_DELAY);
continue;
} else {
err = wifi_platform_bus_enumerate(adapter, TRUE);
if (err) {
DHD_ERROR(("failed to enumerate bus %s, "
"%d retry left\n",
adapter->name, retry));
wifi_platform_set_power(adapter, FALSE,
WIFI_TURNOFF_DELAY);
} else {
break;
}
}
} while (retry--);
if (!retry) {
DHD_ERROR(("failed to power up %s, max retry reached**\n",
adapter->name));
return -ENODEV;
}
}
}
err = dhd_bus_register();
if (err) {
DHD_ERROR(("%s: pcie_register_driver failed\n", __FUNCTION__));
if (dhd_download_fw_on_driverload) {
/* power down all adapters */
for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
adapter = &dhd_wifi_platdata->adapters[i];
wifi_platform_bus_enumerate(adapter, FALSE);
wifi_platform_set_power(adapter,
FALSE, WIFI_TURNOFF_DELAY);
}
}
}
}
return err;
}