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authorPaul Gortmaker <paul.gortmaker@windriver.com>2012-01-05 18:21:43 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-24 14:23:59 -0500
commit9bef3d4197379a995fa80f81950bbbf8d32e9e8b (patch)
tree849d7a9def86d015226fb19b2e513b76f632c8be /drivers/tty/serial/8250.h
parentdcd6c92267155e70a94b3927bce681ce74b80d1f (diff)
serial: group all the 8250 related code together
The drivers/tty/serial dir is already getting rather busy. Relocate the 8250 related drivers to their own subdir to reduce the clutter. Note that sunsu.c is not included in this move -- it is 8250-like hardware, but it does not use any of the existing infrastructure -- and does not depend on SERIAL_8250. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/serial/8250.h')
-rw-r--r--drivers/tty/serial/8250.h105
1 files changed, 0 insertions, 105 deletions
diff --git a/drivers/tty/serial/8250.h b/drivers/tty/serial/8250.h
deleted file mode 100644
index ae027be57e25..000000000000
--- a/drivers/tty/serial/8250.h
+++ /dev/null
@@ -1,105 +0,0 @@
1/*
2 * Driver for 8250/16550-type serial ports
3 *
4 * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
5 *
6 * Copyright (C) 2001 Russell King.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <linux/serial_8250.h>
15
16struct uart_8250_port {
17 struct uart_port port;
18 struct timer_list timer; /* "no irq" timer */
19 struct list_head list; /* ports on this IRQ */
20 unsigned short capabilities; /* port capabilities */
21 unsigned short bugs; /* port bugs */
22 unsigned int tx_loadsz; /* transmit fifo load size */
23 unsigned char acr;
24 unsigned char ier;
25 unsigned char lcr;
26 unsigned char mcr;
27 unsigned char mcr_mask; /* mask of user bits */
28 unsigned char mcr_force; /* mask of forced bits */
29 unsigned char cur_iotype; /* Running I/O type */
30
31 /*
32 * Some bits in registers are cleared on a read, so they must
33 * be saved whenever the register is read but the bits will not
34 * be immediately processed.
35 */
36#define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS
37 unsigned char lsr_saved_flags;
38#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
39 unsigned char msr_saved_flags;
40};
41
42struct old_serial_port {
43 unsigned int uart;
44 unsigned int baud_base;
45 unsigned int port;
46 unsigned int irq;
47 unsigned int flags;
48 unsigned char hub6;
49 unsigned char io_type;
50 unsigned char *iomem_base;
51 unsigned short iomem_reg_shift;
52 unsigned long irqflags;
53};
54
55/*
56 * This replaces serial_uart_config in include/linux/serial.h
57 */
58struct serial8250_config {
59 const char *name;
60 unsigned short fifo_size;
61 unsigned short tx_loadsz;
62 unsigned char fcr;
63 unsigned int flags;
64};
65
66#define UART_CAP_FIFO (1 << 8) /* UART has FIFO */
67#define UART_CAP_EFR (1 << 9) /* UART has EFR */
68#define UART_CAP_SLEEP (1 << 10) /* UART has IER sleep */
69#define UART_CAP_AFE (1 << 11) /* MCR-based hw flow control */
70#define UART_CAP_UUE (1 << 12) /* UART needs IER bit 6 set (Xscale) */
71#define UART_CAP_RTOIE (1 << 13) /* UART needs IER bit 4 set (Xscale, Tegra) */
72
73#define UART_BUG_QUOT (1 << 0) /* UART has buggy quot LSB */
74#define UART_BUG_TXEN (1 << 1) /* UART has buggy TX IIR status */
75#define UART_BUG_NOMSR (1 << 2) /* UART has buggy MSR status bits (Au1x00) */
76#define UART_BUG_THRE (1 << 3) /* UART has buggy THRE reassertion */
77
78#define PROBE_RSA (1 << 0)
79#define PROBE_ANY (~0)
80
81#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
82
83#ifdef CONFIG_SERIAL_8250_SHARE_IRQ
84#define SERIAL8250_SHARE_IRQS 1
85#else
86#define SERIAL8250_SHARE_IRQS 0
87#endif
88
89#if defined(__alpha__) && !defined(CONFIG_PCI)
90/*
91 * Digital did something really horribly wrong with the OUT1 and OUT2
92 * lines on at least some ALPHA's. The failure mode is that if either
93 * is cleared, the machine locks up with endless interrupts.
94 */
95#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1)
96#elif defined(CONFIG_SBC8560)
97/*
98 * WindRiver did something similarly broken on their SBC8560 board. The
99 * UART tristates its IRQ output while OUT2 is clear, but they pulled
100 * the interrupt line _up_ instead of down, so if we register the IRQ
101 * while the UART is in that state, we die in an IRQ storm. */
102#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
103#else
104#define ALPHA_KLUDGE_MCR 0
105#endif