fiq debugger: add resume for debug uart

The uart power domain is off after suspend, which makes
uart registers reseted. So, when resume, uart driver gets
wrong registers value, and enters endless loop.

Change-Id: I90eb805d85cc27486e94949b9a84c4f8a12430b7
Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>

diff --git a/drivers/soc/rockchip/rk_fiq_debugger.c b/drivers/soc/rockchip/rk_fiq_debugger.c
index e085e4527e42973e88253fb4494de4c97a989081..61a4ab600c633d6bdb0775ea75e536ba4b1ddbad 100755 (executable)
--- a/drivers/soc/rockchip/rk_fiq_debugger.c
+++ b/drivers/soc/rockchip/rk_fiq_debugger.c
@@ -177,6 +177,12 @@ static void debug_flush(struct platform_device *pdev)
                cpu_relax();
 }
 
+static int uart_dev_resume(struct platform_device *pdev)
+{
+       debug_port_init(pdev);
+       return 0;
+}
+
 #ifdef CONFIG_RK_CONSOLE_THREAD
 #define FIFO_SIZE SZ_64K
 static DEFINE_KFIFO(fifo, unsigned char, FIFO_SIZE);
@@ -321,6 +327,7 @@ void rk_serial_debug_init(void __iomem *base, int irq, int signal_irq,
        t->pdata.uart_init = debug_port_init;
        t->pdata.uart_getc = debug_getc;
        t->pdata.uart_putc = debug_putc;
+       t->pdata.uart_dev_resume = uart_dev_resume;
 #ifndef CONFIG_RK_CONSOLE_THREAD
        t->pdata.uart_flush = debug_flush;
 #endif