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Diffstat (limited to 'arch/sh/cchips/hd6446x/hd64465/setup.c')
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/setup.c181
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/sh/cchips/hd6446x/hd64465/setup.c b/arch/sh/cchips/hd6446x/hd64465/setup.c
deleted file mode 100644
index 9b8820c3670..00000000000
--- a/arch/sh/cchips/hd6446x/hd64465/setup.c
+++ /dev/null
@@ -1,181 +0,0 @@
1/*
2 * $Id: setup.c,v 1.4 2003/08/03 03:05:10 lethal Exp $
3 *
4 * Setup and IRQ handling code for the HD64465 companion chip.
5 * by Greg Banks <gbanks@pocketpenguins.com>
6 * Copyright (c) 2000 PocketPenguins Inc
7 *
8 * Derived from setup_hd64461.c which bore the message:
9 * Copyright (C) 2000 YAEGASHI Takeshi
10 */
11
12#include <linux/sched.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/param.h>
16#include <linux/ioport.h>
17#include <linux/interrupt.h>
18#include <linux/init.h>
19#include <linux/irq.h>
20#include <asm/io.h>
21#include <asm/irq.h>
22#include <asm/hd64465/hd64465.h>
23
24static void disable_hd64465_irq(unsigned int irq)
25{
26 unsigned short nimr;
27 unsigned short mask = 1 << (irq - HD64465_IRQ_BASE);
28
29 pr_debug("disable_hd64465_irq(%d): mask=%x\n", irq, mask);
30 nimr = inw(HD64465_REG_NIMR);
31 nimr |= mask;
32 outw(nimr, HD64465_REG_NIMR);
33}
34
35static void enable_hd64465_irq(unsigned int irq)
36{
37 unsigned short nimr;
38 unsigned short mask = 1 << (irq - HD64465_IRQ_BASE);
39
40 pr_debug("enable_hd64465_irq(%d): mask=%x\n", irq, mask);
41 nimr = inw(HD64465_REG_NIMR);
42 nimr &= ~mask;
43 outw(nimr, HD64465_REG_NIMR);
44}
45
46static void mask_and_ack_hd64465(unsigned int irq)
47{
48 disable_hd64465_irq(irq);
49}
50
51static void end_hd64465_irq(unsigned int irq)
52{
53 if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
54 enable_hd64465_irq(irq);
55}
56
57static unsigned int startup_hd64465_irq(unsigned int irq)
58{
59 enable_hd64465_irq(irq);
60 return 0;
61}
62
63static void shutdown_hd64465_irq(unsigned int irq)
64{
65 disable_hd64465_irq(irq);
66}
67
68static struct hw_interrupt_type hd64465_irq_type = {
69 .typename = "HD64465-IRQ",
70 .startup = startup_hd64465_irq,
71 .shutdown = shutdown_hd64465_irq,
72 .enable = enable_hd64465_irq,
73 .disable = disable_hd64465_irq,
74 .ack = mask_and_ack_hd64465,
75 .end = end_hd64465_irq,
76};
77
78static irqreturn_t hd64465_interrupt(int irq, void *dev_id)
79{
80 printk(KERN_INFO
81 "HD64465: spurious interrupt, nirr: 0x%x nimr: 0x%x\n",
82 inw(HD64465_REG_NIRR), inw(HD64465_REG_NIMR));
83
84 return IRQ_NONE;
85}
86
87/*
88 * Support for a secondary IRQ demux step. This is necessary
89 * because the HD64465 presents a very thin interface to the
90 * PCMCIA bus; a lot of features (such as remapping interrupts)
91 * normally done in hardware by other PCMCIA host bridges is
92 * instead done in software.
93 */
94static struct {
95 int (*func)(int, void *);
96 void *dev;
97} hd64465_demux[HD64465_IRQ_NUM];
98
99void hd64465_register_irq_demux(int irq,
100 int (*demux)(int irq, void *dev), void *dev)
101{
102 hd64465_demux[irq - HD64465_IRQ_BASE].func = demux;
103 hd64465_demux[irq - HD64465_IRQ_BASE].dev = dev;
104}
105EXPORT_SYMBOL(hd64465_register_irq_demux);
106
107void hd64465_unregister_irq_demux(int irq)
108{
109 hd64465_demux[irq - HD64465_IRQ_BASE].func = 0;
110}
111EXPORT_SYMBOL(hd64465_unregister_irq_demux);
112
113int hd64465_irq_demux(int irq)
114{
115 if (irq == CONFIG_HD64465_IRQ) {
116 unsigned short i, bit;
117 unsigned short nirr = inw(HD64465_REG_NIRR);
118 unsigned short nimr = inw(HD64465_REG_NIMR);
119
120 pr_debug("hd64465_irq_demux, nirr=%04x, nimr=%04x\n", nirr, nimr);
121 nirr &= ~nimr;
122 for (bit = 1, i = 0 ; i < HD64465_IRQ_NUM ; bit <<= 1, i++)
123 if (nirr & bit)
124 break;
125
126 if (i < HD64465_IRQ_NUM) {
127 irq = HD64465_IRQ_BASE + i;
128 if (hd64465_demux[i].func != 0)
129 irq = hd64465_demux[i].func(irq, hd64465_demux[i].dev);
130 }
131 }
132 return irq;
133}
134
135static struct irqaction irq0 = {
136 .handler = hd64465_interrupt,
137 .flags = IRQF_DISABLED,
138 .mask = CPU_MASK_NONE,
139 .name = "HD64465",
140};
141
142static int __init setup_hd64465(void)
143{
144 int i;
145 unsigned short rev;
146 unsigned short smscr;
147
148 if (!MACH_HD64465)
149 return 0;
150
151 printk(KERN_INFO "HD64465 configured at 0x%x on irq %d(mapped into %d to %d)\n",
152 CONFIG_HD64465_IOBASE,
153 CONFIG_HD64465_IRQ,
154 HD64465_IRQ_BASE,
155 HD64465_IRQ_BASE+HD64465_IRQ_NUM-1);
156
157 if (inw(HD64465_REG_SDID) != HD64465_SDID) {
158 printk(KERN_ERR "HD64465 device ID not found, check base address\n");
159 }
160
161 rev = inw(HD64465_REG_SRR);
162 printk(KERN_INFO "HD64465 hardware revision %d.%d\n", (rev >> 8) & 0xff, rev & 0xff);
163
164 outw(0xffff, HD64465_REG_NIMR); /* mask all interrupts */
165
166 for (i = 0; i < HD64465_IRQ_NUM ; i++) {
167 irq_desc[HD64465_IRQ_BASE + i].chip = &hd64465_irq_type;
168 }
169
170 setup_irq(CONFIG_HD64465_IRQ, &irq0);
171
172 /* wake up the UART from STANDBY at this point */
173 smscr = inw(HD64465_REG_SMSCR);
174 outw(smscr & (~HD64465_SMSCR_UARTST), HD64465_REG_SMSCR);
175
176 /* remap IO ports for first ISA serial port to HD64465 UART */
177 hd64465_port_map(0x3f8, 8, CONFIG_HD64465_IOBASE + 0x8000, 1);
178
179 return 0;
180}
181module_init(setup_hd64465);