msm_serial_hs: Add an api for reading the current clock state

Change-Id: Ifb401f770e1ad917f9b567ce166f625a5008bc6c Signed-off-by: Devin Kim <dojip.kim@lge.com>
myfluxi · Jun 13, 2015 · 4fb8d8d · 4fb8d8d
1 parent 68fc2cb
commit 4fb8d8d
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diff --git a/arch/arm/mach-msm/include/mach/msm_serial_hs.h b/arch/arm/mach-msm/include/mach/msm_serial_hs.h
@@ -59,4 +59,5 @@ void msm_hs_request_clock_on(struct uart_port *uport);
 struct uart_port *msm_hs_get_uart_port(int port_index);
 void msm_hs_set_mctrl(struct uart_port *uport,
 				    unsigned int mctrl);
+int msm_hs_get_clock_state(struct uart_port *uport);
 #endif
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
@@ -2190,6 +2190,14 @@ void msm_hs_request_clock_on(struct uart_port *uport)
 }
 EXPORT_SYMBOL(msm_hs_request_clock_on);
 
+int msm_hs_get_clock_state(struct uart_port *uport)
+{
+	struct msm_hs_port *msm_uport = UARTDM_TO_MSM(uport);
+
+	return (int)msm_uport->clk_state;
+}
+EXPORT_SYMBOL(msm_hs_get_clock_state);
+
 static irqreturn_t msm_hs_wakeup_isr(int irq, void *dev)
 {
 	unsigned int wakeup = 0;