Bluetooth working in sleep mode.

Change-Id: I20e42e204dbf73c5f8468fc7733fa29c6ea1c2f2

1 files changed, 47 insertions, 36 deletions

diff --git a/arch/arm/mach-omap2/board-omap3h1-bluetooth.c b/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
index a56ae4e4bd5..2d502bab5a6 100644
--- a/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
+++ b/arch/arm/mach-omap2/board-omap3h1-bluetooth.c
@@ -41,6 +41,10 @@
 #include "board-omap3h1.h"
 #include <linux/regulator/driver.h>
 
+#include "asm/io.h"
+#include "mux.h"
+#include "iomap.h"
+
 static void set_host_wake_locked(int);
 
 #define BT_RESET_GPIO 179
@@ -48,6 +52,7 @@ static void set_host_wake_locked(int);
 #define BT_WAKE_GPIO 93
 #define BT_HOST_WAKE_GPIO 11
 #define UART_PORT 0  /* UART 1 = 0 */
+#define BT_RST_PIN 149
 
 #define olio_debug(format, ...) printk ("OLIO %s: ", __FUNCTION__); printk (format, ##__VA_ARGS__)
 
@@ -79,12 +84,49 @@ static struct bcm_bt_lpm {
 	char bcm_wake_lock_name[100];
 } bt_lpm;
 
+static int wake_mode_calls = 0;
+
+/***************************************************************************
+ * rts_enter_sleep_mode - set RTS pin to off mode
+ * 
+ * The RTS pin needs to be kept high while sleeping. 
+ */
+
+void rts_enter_sleep_mode()
+{
+  if (wake_mode_calls == 0)
+    __raw_writew ((u16) ( 1 << 8 | 1 << 4 | 1 << 3 | 4 ), 
+                  (volatile void *) OMAP2_L4_IO_ADDRESS(OMAP3_CONTROL_PADCONF_MUX_PBASE) + 
+                  OMAP3_CONTROL_PADCONF_UART1_RTS_OFFSET);     
+
+  /* Now this is a GPIO pin. Send to sleep. */
+  
+  return;
+}
+
+/***************************************************************************
+ * rts_exit_sleep_mode - set RTS pin to on mode
+ * 
+ * The RTS pin needs to be kept high while sleeping, otherwise let the 
+ * driver decide.
+ */
+
+void rts_exit_sleep_mode()
+{
+  if (wake_mode_calls == 0)
+    __raw_writew ((u16) ( 0x0 ),
+                  (volatile void *) OMAP2_L4_IO_ADDRESS(OMAP3_CONTROL_PADCONF_MUX_PBASE) + 
+                  OMAP3_CONTROL_PADCONF_UART1_RTS_OFFSET);
+
+  return;
+}
+
 static int bcm20702_bt_rfkill_set_power(void *data, bool blocked)
 {
     // rfkill_ops callback. Turn transmitter on when blocked is false
 	if (!blocked) {
 		if (clk32ksys_reg && !bt_enabled)
-			regulator_enable(clk32ksys_reg);
+          (void) regulator_enable(clk32ksys_reg);
 
         gpio_set_value(BT_RESET_GPIO, 1);
 		gpio_set_value(BT_REG_GPIO, 1);
@@ -123,10 +165,6 @@ static void set_wake_locked(int wake)
         olio_debug ("Now locking wake lock\n");
         wake_lock (&bt_lpm.bcm_wake_lock);
 
-        /* Does this even make sense here? We've already using the port, 
-           doesn't that mean that we're */
-           
-
         if (!wake_uart_enabled)
              omap_serial_ext_uart_enable(UART_PORT);
     }
@@ -190,11 +228,13 @@ static void set_host_wake_locked(int host_wake)
 	if (host_wake) {
         olio_debug ("host_wake is set, taking wake lock\n");
         wake_lock(&bt_lpm.host_wake_lock);
-
+       
 		if (!host_wake_uart_enabled) {
 			omap_serial_ext_uart_enable(UART_PORT);
-		}
+         }
+
 	} else  {
+
 		if (host_wake_uart_enabled) {
 			omap_serial_ext_uart_disable(UART_PORT);
 		}
@@ -400,35 +440,6 @@ static int bcm20702_bluetooth_remove(struct platform_device *pdev)
 	return 0;
 }
 
-int bcm4430_bluetooth_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	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;
-	}
-
-	return 0;
-}
-
-int bcm4430_bluetooth_resume(struct platform_device *pdev)
-{
-	int irq = gpio_to_irq(BT_HOST_WAKE_GPIO);
-	enable_irq(irq);
-	return 0;
-}
-
-/* 
-	.suspend = bcm4430_bluetooth_suspend,
-	.resume = bcm4430_bluetooth_resume,
-*/
-
 static struct platform_driver bcm20702_bluetooth_platform_driver = {
 	.probe = bcm20702_bluetooth_probe,
 	.remove = bcm20702_bluetooth_remove,