BT LPM working

Change-Id: I15947ef87d69d7eb9343afa34ed254a34ba3991d

5 files changed, 56 insertions, 6 deletions

diff --git a/arch/arm/mach-omap2/board-omap3h1-bluetooth.c b/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
index 68b3d80d290..6c4a13ec093 100644
--- a/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
+++ b/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
@@ -36,6 +36,7 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 #include <asm/mach-types.h>
+#include <linux/platform_data/serial-omap.h>
 #include "serial.h"
 #include "board-omap3h1.h"
 #include <linux/regulator/driver.h>
@@ -46,6 +47,7 @@ static void update_host_wake_locked(int);
 #define BT_REG_GPIO 180
 #define BT_WAKE_GPIO 93
 #define BT_HOST_WAKE_GPIO 11
+#define UART_PORT 1
 
 static struct rfkill *bt_rfkill;
 static struct regulator *clk32ksys_reg;
@@ -103,13 +105,13 @@ static void set_wake_locked(int wake)
 	if (!wake)
 		wake_unlock(&bt_lpm.wake_lock);
 
-	//if (!wake_uart_enabled && wake)
-		//omap_uart_enable(2);
+	if (!wake_uart_enabled && wake)
+		omap_serial_ext_uart_enable(UART_PORT);
 
 	gpio_set_value(BT_WAKE_GPIO, wake);
 
-	//if (wake_uart_enabled && !wake)
-		//omap_uart_disable(2);
+	if (wake_uart_enabled && !wake)
+		omap_serial_ext_uart_disable(UART_PORT);
 
 	wake_uart_enabled = wake;
 }
@@ -145,11 +147,11 @@ static void update_host_wake_locked(int host_wake)
 	if (host_wake) {
 		wake_lock(&bt_lpm.wake_lock);
 		if (!host_wake_uart_enabled) {
-			//omap_uart_enable(2);
+			omap_serial_ext_uart_enable(UART_PORT);
 		}
 	} else  {
 		if (host_wake_uart_enabled) {
-			//omap_uart_disable(2);
+			omap_serial_ext_uart_disable(UART_PORT);
 		}
 		// Take a timed wakelock, so that upper layers can take it.
 		// The chipset deasserts the hostwake lock, when there is no
diff --git a/arch/arm/mach-omap2/board-omap3h1.c b/arch/arm/mach-omap2/board-omap3h1.c
index ff621b2a86c..25999b224cc 100644
--- a/arch/arm/mach-omap2/board-omap3h1.c
+++ b/arch/arm/mach-omap2/board-omap3h1.c
@@ -1010,6 +1010,8 @@ static struct omap_uart_port_info omap_uart_ports[] = {
         .dma_rx_timeout   = DEFAULT_RXDMA_TIMEOUT,
         .dma_rx_poll_rate = DEFAULT_RXDMA_POLLRATE,
         .autosuspend_timeout = 1000,
+        .wakelock_timeout = 150,
+        .wake_peer = bcm_bt_lpm_exit_lpm_locked,
         .wakeup_capable = true,
     },
     {
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index b570d93cbb7..b1f3fb1d396 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -301,6 +301,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
 	omap_up.dma_rx_timeout = info->dma_rx_timeout;
 	omap_up.dma_rx_poll_rate = info->dma_rx_poll_rate;
 	omap_up.autosuspend_timeout = info->autosuspend_timeout;
+	omap_up.wake_peer = info->wake_peer;
 	omap_up.DTR_gpio = info->DTR_gpio;
 	omap_up.DTR_inverted = info->DTR_inverted;
 	omap_up.DTR_present = info->DTR_present;
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 3009a8909cc..9b19ae172c3 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1109,7 +1109,14 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
 	pm_runtime_mark_last_busy(up->dev);
 	pm_runtime_put_autosuspend(up->dev);
 }
+static void serial_omap_wake_peer(struct uart_port *port)
+{
+       struct uart_omap_port *up = to_uart_omap_port(port);
+       struct omap_uart_port_info *pdata = up->dev->platform_data;
 
+       if (pdata->wake_peer)
+               pdata->wake_peer(port);
+}
 static void serial_omap_release_port(struct uart_port *port)
 {
 	dev_dbg(port->dev, "serial_omap_release_port+\n");
@@ -1341,6 +1348,7 @@ static struct uart_ops serial_omap_pops = {
 	.shutdown	= serial_omap_shutdown,
 	.set_termios	= serial_omap_set_termios,
 	.pm		= serial_omap_pm,
+	.wake_peer 	= serial_omap_wake_peer,
 	.type		= serial_omap_type,
 	.release_port	= serial_omap_release_port,
 	.request_port	= serial_omap_request_port,
@@ -1860,6 +1868,39 @@ static void __exit serial_omap_exit(void)
 	uart_unregister_driver(&serial_omap_reg);
 }
 
+/* Used by ext client device connected to uart to control uart */
+int omap_serial_ext_uart_enable(u8 port_id)
+{
+       struct uart_omap_port *up;
+       int err = 0;
+
+       if (port_id > OMAP_MAX_HSUART_PORTS) {
+               pr_err("Invalid Port_id %d passed to %s\n", port_id, __func__);
+               err = -ENODEV;
+       } else {
+               up = ui[port_id];
+               pm_runtime_get_sync(up->dev);
+       }
+       return err;
+}
+
+int omap_serial_ext_uart_disable(u8 port_id)
+{
+       struct uart_omap_port *up;
+       int err = 0;
+
+       if (port_id > OMAP_MAX_HSUART_PORTS) {
+               pr_err("Invalid Port_id %d passed to %s\n", port_id, __func__);
+               err = -ENODEV;
+       } else {
+               up = ui[port_id];
+               pm_runtime_mark_last_busy(up->dev);
+               pm_runtime_put_autosuspend(up->dev);
+       }
+       return err;
+}
+
+
 module_init(serial_omap_init);
 module_exit(serial_omap_exit);
 
diff --git a/include/linux/platform_data/serial-omap.h b/include/linux/platform_data/serial-omap.h
index afba9011b52..9990f7cd03c 100644
--- a/include/linux/platform_data/serial-omap.h
+++ b/include/linux/platform_data/serial-omap.h
@@ -48,10 +48,14 @@ struct omap_uart_port_info {
 
 	int (*get_context_loss_count)(struct device *);
 	void (*enable_wakeup)(struct device *, bool);
+	void (*wake_peer)(struct uart_port *);
 };
 
 extern void omap_uart_remove_wakeup(struct device *dev);
 extern void omap_uart_enable_wakeup(struct device *dev, bool enable);
 extern int omap_pm_get_dev_context_loss_count(struct device *dev);
 
+extern int omap_serial_ext_uart_enable(u8 port_id);
+extern int omap_serial_ext_uart_disable(u8 port_id);
+
 #endif /* __OMAP_SERIAL_H__ */