int bcm2076_bluetooth_suspend(struct platform_device *pdev, pm_message_t state)
{
#if BT_HOST_WAKE_INT_ENABLED
int irq = gpio_to_irq(BT_HOST_WAKE_GPIO);
int host_wake;
disable_irq(irq);
host_wake = gpio_get_value(BT_HOST_WAKE_GPIO);
if (host_wake) {
enable_irq(irq);
return -EBUSY;
}
//Mux RTS pin into GPIO PULL UP pin (this flows off the 2076)
pr_debug("** suspend ** changing RTS pin to GPIO pulled up\n");
omap_rts_mux_write(MUX_PULL_UP, UART2);
#else
pr_debug( "%s: BT_HOST_WAKE disabled\n",__FUNCTION__);
#endif //BT_HOST_WAKE_INT_ENABLED
if( idme_query_board_type( IDME_BOARD_TYPE_TATE_EVT2 ) )
omap_serial_ext_uart_disable(UART2);
return 0;
}
/* Call the uart disable of serial driver */
static int plat_bt_uart_disable(void)
{
int port_id = 0;
int err = 0;
if (uart_req) {
sscanf(BT_UART_DEV_NAME, "/dev/ttyO%d", &port_id);
err = omap_serial_ext_uart_disable(port_id);
if (!err)
uart_req = false;
}
return err;
}
/* Call the uart disable of serial driver */
static int plat_uart_disable(void)
{
int port_id = 0;
int err = 0;
if (uart_req) {
sscanf(WILINK_UART_DEV_NAME, "/dev/ttyO%d", &port_id);
err = omap_serial_ext_uart_disable(port_id);
if (!err)
uart_req = false;
}
wake_unlock(&st_wk_lock);
return err;
}
static void update_host_wake_locked(int host_wake)
{
pr_debug( "%s TOP, host_wake=%d\n",__FUNCTION__,host_wake);
if (host_wake == bt_lpm.host_wake)
{
pr_debug( "%s (host_wake==bt_lpm.host_wake), returning early\n",__FUNCTION__);
return;
}
bt_lpm.host_wake = host_wake;
if (host_wake) {
wake_lock(&bt_lpm.wake_lock);
if (!host_wake_uart_enabled)
{
omap_serial_ext_uart_enable(UART2);
pr_debug( "%s !host_wake_uart_enabled, called omap_serial_ext_uart_enable\n",__FUNCTION__);
//Mux back GPIO PULL UP pin in RTS pin
pr_debug("** update_host_wake_locked ** changing RTS pin from GPIO back to RTS\n");
omap_rts_mux_write(0, UART2);
}
} else {
if (host_wake_uart_enabled)
{
//Mux RTS pin into GPIO PULL UP pin (this flows off the 2076)
pr_debug("** update_host_wake_locked ** changing RTS pin to GPIO pulled up\n");
omap_rts_mux_write(MUX_PULL_UP, UART2);
omap_serial_ext_uart_disable(UART2);
pr_debug( "%s host_wake_uart_enabled, called omap_serial_ext_uart_disable\n",__FUNCTION__);
}
// Take a timed wakelock, so that upper layers can take it.
// The chipset deasserts the hostwake lock, when there is no
// more data to send.
wake_lock_timeout(&bt_lpm.wake_lock, HZ/2);
}
host_wake_uart_enabled = host_wake;
pr_debug( "%s host_wake_uart_enabled = host_wake = %d\n",__FUNCTION__,host_wake);
}
static void set_wake_locked(int wake)
{
//pr_debug( "bbbluetooth.c:%s wake=%d TOP\n",__FUNCTION__,wake);
bt_lpm.wake = wake;
if (!wake)
wake_unlock(&bt_lpm.wake_lock);
if (!wake_uart_enabled && wake)
{
pr_debug( "%s !wake_uart_enabled && wake, calling omap_serial_ext_uart_enable\n",__FUNCTION__);
omap_serial_ext_uart_enable(UART2);
//Mux back GPIO PULL UP pin in RTS pin
pr_debug("** set_wake_locked ** changing RTS pin from GPIO back to RTS\n");
omap_rts_mux_write(0, UART2);
}
// DOWN_STREAM_BT_WAKE_AND_UART_CONTROL_FIX ++
// Control BT_WAKE assertion/de-assertion in down-stream path only
#if 0
pr_debug( "bbbluetooth.c:%s setting BT_WAKE(%s)\n",__FUNCTION__,wake ? "high":"low");
gpio_set_value(BT_WAKE_GPIO, wake);
#endif
// DOWN_STREAM_BT_WAKE_AND_UART_CONTROL_FIX --
if (wake_uart_enabled && !wake)
{
//Mux RTS pin into GPIO PULL UP pin (this flows off the 2076)
pr_debug("** set_wake_locked ** changing RTS pin to GPIO pulled up\n");
omap_rts_mux_write(MUX_PULL_UP, UART2);
pr_debug( "%s wake_uart_enabled && !wake, calling omap_serial_ext_uart_disable\n",__FUNCTION__);
omap_serial_ext_uart_disable(UART2);
}
wake_uart_enabled = wake;
//pr_debug( "bbbluetooth.c:%s wake_uart_enabled=%d END\n",__FUNCTION__,wake_uart_enabled);
}
