openwrt/target/linux/ar7-2.6/patches/500-serial_kludge.patch

diff -Nru linux-2.6.19.2/include/linux/serialP.h linux-ar7/include/linux/serialP.h
--- linux-2.6.19.2/include/linux/serialP.h	2007-01-17 01:24:01.000000000 +0700
+++ linux-ar7/include/linux/serialP.h	2007-03-22 22:36:48.000000000 +0700
@@ -135,6 +135,9 @@
  * the interrupt line _up_ instead of down, so if we register the IRQ
  * while the UART is in that state, we die in an IRQ storm. */
 #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
+#elif defined(CONFIG_AR7)
+/* This is how it is set up by bootloader... */
+#define ALPHA_KLUDGE_MCR  (UART_MCR_OUT2 | UART_MCR_OUT1 | UART_MCR_RTS | UART_MCR_DTR)
 #else
 #define ALPHA_KLUDGE_MCR 0
 #endif
diff -Nru linux-2.6.19.2/include/linux/serial_core.h linux-ar7/include/linux/serial_core.h
--- linux-2.6.19.2/include/linux/serial_core.h	2007-01-11 02:10:37.000000000 +0700
+++ linux-ar7/include/linux/serial_core.h	2007-03-22 22:50:13.000000000 +0700
@@ -39,7 +39,8 @@
 #define PORT_RSA	13
 #define PORT_NS16550A	14
 #define PORT_XSCALE	15
-#define PORT_MAX_8250	15	/* max port ID */
+#define PORT_AR7	16
+#define PORT_MAX_8250	16	/* max port ID */
 
 /*
  * ARM specific type numbers.  These are not currently guaranteed
diff -Nru linux-2.6.19.2/drivers/serial/8250.c linux-ar7/drivers/serial/8250.c
--- linux-2.6.19.2/drivers/serial/8250.c	2007-01-11 02:10:37.000000000 +0700
+++ linux-ar7/drivers/serial/8250.c	2007-03-22 22:45:17.000000000 +0700
@@ -251,6 +251,13 @@
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
 		.flags		= UART_CAP_FIFO | UART_CAP_UUE,
 	},
+	[PORT_AR7] = {
+		.name		= "TI-AR7",
+		.fifo_size	= 16,
+		.tx_loadsz	= 16,
+		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
+		.flags		= UART_CAP_FIFO | UART_CAP_AFE,
+	},
 };
 
 #ifdef CONFIG_SERIAL_8250_AU1X00
@@ -2243,7 +2250,7 @@
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
-	wait_for_xmitr(up, UART_LSR_THRE);
+	wait_for_xmitr(up, BOTH_EMPTY);
 	serial_out(up, UART_TX, ch);
 }