From 44f5b21367e7a380cc09aaf107bcc88e9136657c Mon Sep 17 00:00:00 2001
From: Huibin Hong <huibin.hong@rock-chips.com>
Date: Fri, 12 Aug 2016 11:19:48 +0800
Subject: [PATCH] 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        | 6 ++++++
 drivers/staging/android/fiq_debugger/fiq_debugger.c | 7 +++++++
 drivers/staging/android/fiq_debugger/fiq_debugger.h | 5 +++++
 3 files changed, 18 insertions(+)

diff --git a/drivers/staging/android/fiq_debugger/Kconfig b/drivers/staging/android/fiq_debugger/Kconfig
index 60fc224d4efc..097f53b450aa 100644
--- a/drivers/staging/android/fiq_debugger/Kconfig
+++ b/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
diff --git a/drivers/staging/android/fiq_debugger/fiq_debugger.c b/drivers/staging/android/fiq_debugger/fiq_debugger.c
index f6a806219f84..7a11b98c0884 100644
--- a/drivers/staging/android/fiq_debugger/fiq_debugger.c
+++ b/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--) {
diff --git a/drivers/staging/android/fiq_debugger/fiq_debugger.h b/drivers/staging/android/fiq_debugger/fiq_debugger.h
index c9ec4f8db086..caf75155110f 100644
--- a/drivers/staging/android/fiq_debugger/fiq_debugger.h
+++ b/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