From a359cca71e73a83612b5bbecea41d3b7a47160ca Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Wed, 10 Oct 2007 16:47:58 +0800
Subject: [PATCH] Blackfin arch: update kgdb patch

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
---
 drivers/serial/bfin_5xx.c   | 42 +++++++++++++++++++++++++-----------------
 include/asm-blackfin/kgdb.h |  1 +
 2 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 5039e2675ab..3f39e181469 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -86,10 +86,8 @@ static void bfin_serial_stop_tx(struct uart_port *port)
 {
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 
-#ifdef CONFIG_BF54x
 	while (!(UART_GET_LSR(uart) & TEMT))
 		continue;
-#endif
 
 #ifdef CONFIG_SERIAL_BFIN_DMA
 	disable_dma(uart->tx_dma_channel);
@@ -128,8 +126,8 @@ static void bfin_serial_start_tx(struct uart_port *port)
 	ier = UART_GET_IER(uart);
 	ier |= ETBEI;
 	UART_PUT_IER(uart, ier);
-	bfin_serial_tx_chars(uart);
 #endif
+	bfin_serial_tx_chars(uart);
 #endif
 }
 
@@ -139,18 +137,21 @@ static void bfin_serial_start_tx(struct uart_port *port)
 static void bfin_serial_stop_rx(struct uart_port *port)
 {
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+#ifdef	CONFIG_KGDB_UART
+	if (uart->port.line != CONFIG_KGDB_UART_PORT) {
+#endif
 #ifdef CONFIG_BF54x
 	UART_CLEAR_IER(uart, ERBFI);
 #else
 	unsigned short ier;
 
 	ier = UART_GET_IER(uart);
-#ifdef	CONFIG_KGDB_UART
-	if (uart->port.line != CONFIG_KGDB_UART_PORT)
-#endif
 	ier &= ~ERBFI;
 	UART_PUT_IER(uart, ier);
 #endif
+#ifdef	CONFIG_KGDB_UART
+	}
+#endif
 }
 
 /*
@@ -175,8 +176,11 @@ void kgdb_put_debug_char(int chr)
 	while (!(UART_GET_LSR(uart) & THRE)) {
 		SSYNC();
 	}
+
+#ifndef CONFIG_BF54x
 	UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
 	SSYNC();
+#endif
 	UART_PUT_CHAR(uart, (unsigned char)chr);
 	SSYNC();
 }
@@ -194,8 +198,10 @@ int kgdb_get_debug_char(void)
 	while(!(UART_GET_LSR(uart) & DR)) {
 		SSYNC();
 	}
+#ifndef CONFIG_BF54x
 	UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
 	SSYNC();
+#endif
 	chr = UART_GET_CHAR(uart);
 	SSYNC();
 
@@ -697,17 +703,19 @@ static int bfin_serial_startup(struct uart_port *port)
 	uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
 	add_timer(&(uart->rx_dma_timer));
 #else
+	if (request_irq(uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
+	     "BFIN_UART_RX", uart)) {
 # ifdef	CONFIG_KGDB_UART
-	if (uart->port.line != CONFIG_KGDB_UART_PORT && request_irq
-# else
-	if (request_irq
+		if (uart->port.line != CONFIG_KGDB_UART_PORT) {
 # endif
-	    (uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
-	     "BFIN_UART_RX", uart)) {
 		printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
 		return -EBUSY;
+# ifdef	CONFIG_KGDB_UART
+		}
+# endif
 	}
 
+
 	if (request_irq
 	    (uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED,
 	     "BFIN_UART_TX", uart)) {
@@ -1154,10 +1162,6 @@ struct console __init *bfin_earlyserial_init(unsigned int port,
 		port = 0;
 	bfin_serial_init_ports();
 	bfin_early_serial_console.index = port;
-#ifdef CONFIG_KGDB_UART
-	kgdb_entry_state = 0;
-	init_kgdb_uart();
-#endif
 	uart = &bfin_serial_ports[port];
 	t.c_cflag = cflag;
 	t.c_iflag = 0;
@@ -1255,7 +1259,7 @@ static int __init bfin_serial_init(void)
 	int ret;
 #ifdef CONFIG_KGDB_UART
 	struct bfin_serial_port *uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-	struct termios t;
+	struct ktermios t;
 #endif
 
 	pr_info("Serial: Blackfin serial driver\n");
@@ -1272,10 +1276,14 @@ static int __init bfin_serial_init(void)
 	}
 #ifdef CONFIG_KGDB_UART
 	if (uart->port.cons->index != CONFIG_KGDB_UART_PORT) {
-		request_irq(uart->port.irq, bfin_serial_int,
+		request_irq(uart->port.irq, bfin_serial_rx_int,
 			IRQF_DISABLED, "BFIN_UART_RX", uart);
 		pr_info("Request irq for kgdb uart port\n");
+#ifdef CONFIG_BF54x
+		UART_SET_IER(uart, ERBFI);
+#else
 		UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
+#endif
 		SSYNC();
 		t.c_cflag = CS8|B57600;
 		t.c_iflag = 0;
diff --git a/include/asm-blackfin/kgdb.h b/include/asm-blackfin/kgdb.h
index 532bd905200..0f73847fd6b 100644
--- a/include/asm-blackfin/kgdb.h
+++ b/include/asm-blackfin/kgdb.h
@@ -179,5 +179,6 @@ enum regnames {
 #define STATDA1		0x80
 
 extern void kgdb_print(const char *fmt, ...);
+extern void init_kgdb_uart(void);
 
 #endif
-- 
2.11.4.GIT