fiq_debugger: print log by console thread

Change-Id: Id664cdfe02f87b1f8bb37b9a4e3985c1eafef226
Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>

drivers/staging/android/fiq_debugger/Kconfig

@@ -56,3 +56,9 @@ config FIQ_WATCHDOG
 	select FIQ_DEBUGGER
 	select PSTORE_RAM
 	default n
+
+config RK_CONSOLE_THREAD
+	bool "Console write by thread"
+	default n
+	help
+	  Normal kernel printk will write out to UART by "kconsole" kthread

drivers/staging/android/fiq_debugger/fiq_debugger.c

@@ -810,6 +810,13 @@ static void fiq_debugger_console_write(struct console *co,
 	if (!state->console_enable && !state->syslog_dumping)
 		return;
 
+#ifdef CONFIG_RK_CONSOLE_THREAD
+	if (state->pdata->console_write) {
+		state->pdata->console_write(state->pdev, s, count);
+		return;
+	}
+#endif
+
 	fiq_debugger_uart_enable(state);
 	spin_lock_irqsave(&state->console_lock, flags);
 	while (count--) {

drivers/staging/android/fiq_debugger/fiq_debugger.h

@@ -59,6 +59,11 @@ struct fiq_debugger_pdata {
 
 	void (*force_irq)(struct platform_device *pdev, unsigned int irq);
 	void (*force_irq_ack)(struct platform_device *pdev, unsigned int irq);
+
+#ifdef CONFIG_RK_CONSOLE_THREAD
+	void (*console_write)(struct platform_device *pdev, const char *s,
+			      unsigned int count);
+#endif
 };
 
 #endif