Serial driver for TX3912 builtin UART.

1 files changed, 92 insertions, 0 deletions

diff --git a/drivers/char/serial_tx3912.h b/drivers/char/serial_tx3912.h
new file mode 100644
index 000000000..8276797e1
--- /dev/null
+++ b/drivers/char/serial_tx3912.h
@@ -0,0 +1,92 @@
+/*
+ *  drivers/char/serial_tx3912.h
+ *
+ *  Copyright (C) 1999 Harald Koerfgen
+ *  Copyright (C) 2000 Jim Pick <jim@jimpick.com>
+ *  Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Serial driver for TMPR3912/05 and PR31700 processors
+ */
+#include <linux/serialP.h>
+#include <linux/generic_serial.h>
+
+/* UART Interrupt (Interrupt 2) bits (UARTA,UARTB) */
+#define UART_RX_INT         9  /* receiver holding register full  (31, 21) */
+#define UART_RXOVERRUN_INT  8  /* receiver overrun error          (30, 20) */
+#define UART_FRAMEERR_INT   7  /* receiver frame error            (29, 19) */
+#define UART_BREAK_INT      6  /* received break signal           (28, 18) */
+#define UART_PARITYERR_INT  5  /* receiver parity error           (27, 17) */
+#define UART_TX_INT         4  /* transmit holding register empty (26, 16) */
+#define UART_TXOVERRUN_INT  3  /* transmit overrun error          (25, 15) */
+#define UART_EMPTY_INT      2  /* both trans/recv regs empty      (24, 14) */
+#define UART_DMAFULL_INT    1  /* DMA at end of buffer            (23, 13) */
+#define UART_DMAHALF_INT    0  /* DMA halfway through buffer */   (22, 12) */
+
+#define UARTA_SHIFT        22
+#define UARTB_SHIFT        12
+
+#define INTTYPE(interrupttype)            (1 << interrupttype)
+
+/* 
+ * This driver can spew a whole lot of debugging output at you. If you
+ * need maximum performance, you should disable the DEBUG define.
+ */
+#undef TX3912_UART_DEBUG
+
+#ifdef TX3912_UART_DEBUG
+#define TX3912_UART_DEBUG_OPEN		0x00000001
+#define TX3912_UART_DEBUG_SETTING	0x00000002
+#define TX3912_UART_DEBUG_FLOW		0x00000004
+#define TX3912_UART_DEBUG_MODEMSIGNALS	0x00000008
+#define TX3912_UART_DEBUG_TERMIOS	0x00000010
+#define TX3912_UART_DEBUG_TRANSMIT	0x00000020
+#define TX3912_UART_DEBUG_RECEIVE	0x00000040
+#define TX3912_UART_DEBUG_INTERRUPTS	0x00000080
+#define TX3912_UART_DEBUG_PROBE		0x00000100
+#define TX3912_UART_DEBUG_INIT		0x00000200
+#define TX3912_UART_DEBUG_CLEANUP	0x00000400
+#define TX3912_UART_DEBUG_CLOSE		0x00000800
+#define TX3912_UART_DEBUG_FIRMWARE	0x00001000
+#define TX3912_UART_DEBUG_MEMTEST	0x00002000
+#define TX3912_UART_DEBUG_THROTTLE	0x00004000
+#define TX3912_UART_DEBUG_ALL		0xffffffff
+
+int rs_debug = TX3912_UART_DEBUG_ALL & ~TX3912_UART_DEBUG_TRANSMIT;
+
+#define rs_dprintk(f, str...) if (rs_debug & f) printk (str)
+#define func_enter() rs_dprintk (TX3912_UART_DEBUG_FLOW,	\
+				"rs: enter " __FUNCTION__ "\n")
+#define func_exit() rs_dprintk (TX3912_UART_DEBUG_FLOW,	\
+				"rs: exit " __FUNCTION__ "\n")
+
+#else
+#define rs_dprintk(f, str...)
+#define func_enter()
+#define func_exit()
+
+#endif	/* TX3912_UART_DEBUG */
+
+/*
+ * Number of serial ports
+ */
+#define TX3912_UART_NPORTS  2
+
+/*
+ * Hardware specific serial port structure
+ */
+struct rs_port { 	
+	struct gs_port		gs;		/* Must be first field! */
+
+	unsigned long		base;
+	int			intshift;	/* Register shift */
+	struct wait_queue	*shutdown_wait; 
+	int			stat_flags;
+        struct async_icount	icount;		/* Counters for 4 input IRQs */
+	int			read_status_mask;
+	int			ignore_status_mask;
+	int			x_char;		/* XON/XOFF character */
+};