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authorPaul Mundt <lethal@linux-sh.org>2008-10-28 07:07:44 -0400
committerPaul Mundt <lethal@linux-sh.org>2008-10-28 07:07:44 -0400
commit3eeebf17f31c583f83e081b17b3076477cb96886 (patch)
treeb1e70bb1b0d9959179d9d8967543fc060a59aff5 /arch/sh/cchips
parent5ff0594e2f6fb3242a1a2a4794286244e95afab1 (diff)
sh: Kill off long-dead HD64465 cchip support.
This code has been dead for many years. The last update it received was in 2003 in order to update it for the driver model changes, though it had already been in disarray and unused before that point. The only boards that ever used this chip have not had users in many years either, so it is finally safe to just kill it off and move on with life. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/cchips')
-rw-r--r--arch/sh/cchips/Kconfig33
-rw-r--r--arch/sh/cchips/hd6446x/Makefile1
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/Makefile6
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/gpio.c196
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/io.c211
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/setup.c181
6 files changed, 0 insertions, 628 deletions
diff --git a/arch/sh/cchips/Kconfig b/arch/sh/cchips/Kconfig
index 7892361eedc8..f43d18373f22 100644
--- a/arch/sh/cchips/Kconfig
+++ b/arch/sh/cchips/Kconfig
@@ -22,20 +22,6 @@ config HD64461
22 Say Y if you want support for the HD64461. 22 Say Y if you want support for the HD64461.
23 Otherwise, say N. 23 Otherwise, say N.
24 24
25config HD64465
26 bool "Hitachi HD64465 companion chip support"
27 ---help---
28 The Hitachi HD64465 provides an interface for
29 the SH7750 CPU, supporting a LCD controller,
30 CRT color controller, IrDA, USB, PCMCIA,
31 keyboard controller, and a printer interface.
32
33 More information is available at
34 <http://global.hitachi.com/New/cnews/E/1998/981019B.html>.
35
36 Say Y if you want support for the HD64465.
37 Otherwise, say N.
38
39endchoice 25endchoice
40 26
41# These will also be split into the Kconfig's below 27# These will also be split into the Kconfig's below
@@ -61,23 +47,4 @@ config HD64461_ENABLER
61 via the HD64461 companion chip. 47 via the HD64461 companion chip.
62 Otherwise, say N. 48 Otherwise, say N.
63 49
64config HD64465_IOBASE
65 hex "HD64465 start address"
66 depends on HD64465
67 default "0xb0000000"
68 help
69 The default setting of the HD64465 IO base address is 0xb0000000.
70
71 Do not change this unless you know what you are doing.
72
73config HD64465_IRQ
74 int "HD64465 IRQ"
75 depends on HD64465
76 default "5"
77 help
78 The default setting of the HD64465 IRQ is 5.
79
80 Do not change this unless you know what you are doing.
81
82endmenu 50endmenu
83
diff --git a/arch/sh/cchips/hd6446x/Makefile b/arch/sh/cchips/hd6446x/Makefile
index f7de4076e242..9682e3ab668f 100644
--- a/arch/sh/cchips/hd6446x/Makefile
+++ b/arch/sh/cchips/hd6446x/Makefile
@@ -1,4 +1,3 @@
1obj-$(CONFIG_HD64461) += hd64461.o 1obj-$(CONFIG_HD64461) += hd64461.o
2obj-$(CONFIG_HD64465) += hd64465/
3 2
4EXTRA_CFLAGS += -Werror 3EXTRA_CFLAGS += -Werror
diff --git a/arch/sh/cchips/hd6446x/hd64465/Makefile b/arch/sh/cchips/hd6446x/hd64465/Makefile
deleted file mode 100644
index f66edcb52c5b..000000000000
--- a/arch/sh/cchips/hd6446x/hd64465/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
1#
2# Makefile for the HD64465
3#
4
5obj-y := setup.o io.o gpio.o
6
diff --git a/arch/sh/cchips/hd6446x/hd64465/gpio.c b/arch/sh/cchips/hd6446x/hd64465/gpio.c
deleted file mode 100644
index 43431855ec86..000000000000
--- a/arch/sh/cchips/hd6446x/hd64465/gpio.c
+++ /dev/null
@@ -1,196 +0,0 @@
1/*
2 * $Id: gpio.c,v 1.4 2003/05/19 22:24:18 lethal Exp $
3 * by Greg Banks <gbanks@pocketpenguins.com>
4 * (c) 2000 PocketPenguins Inc
5 *
6 * GPIO pin support for HD64465 companion chip.
7 */
8
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/module.h>
12#include <linux/sched.h>
13#include <linux/ioport.h>
14#include <asm/io.h>
15#include <asm/hd64465/gpio.h>
16
17#define _PORTOF(portpin) (((portpin)>>3)&0x7)
18#define _PINOF(portpin) ((portpin)&0x7)
19
20/* Register addresses parametrised on port */
21#define GPIO_CR(port) (HD64465_REG_GPACR+((port)<<1))
22#define GPIO_DR(port) (HD64465_REG_GPADR+((port)<<1))
23#define GPIO_ICR(port) (HD64465_REG_GPAICR+((port)<<1))
24#define GPIO_ISR(port) (HD64465_REG_GPAISR+((port)<<1))
25
26#define GPIO_NPORTS 5
27
28#define MODNAME "hd64465_gpio"
29
30EXPORT_SYMBOL(hd64465_gpio_configure);
31EXPORT_SYMBOL(hd64465_gpio_get_pin);
32EXPORT_SYMBOL(hd64465_gpio_get_port);
33EXPORT_SYMBOL(hd64465_gpio_register_irq);
34EXPORT_SYMBOL(hd64465_gpio_set_pin);
35EXPORT_SYMBOL(hd64465_gpio_set_port);
36EXPORT_SYMBOL(hd64465_gpio_unregister_irq);
37
38/* TODO: each port should be protected with a spinlock */
39
40
41void hd64465_gpio_configure(int portpin, int direction)
42{
43 unsigned short cr;
44 unsigned int shift = (_PINOF(portpin)<<1);
45
46 cr = inw(GPIO_CR(_PORTOF(portpin)));
47 cr &= ~(3<<shift);
48 cr |= direction<<shift;
49 outw(cr, GPIO_CR(_PORTOF(portpin)));
50}
51
52void hd64465_gpio_set_pin(int portpin, unsigned int value)
53{
54 unsigned short d;
55 unsigned short mask = 1<<(_PINOF(portpin));
56
57 d = inw(GPIO_DR(_PORTOF(portpin)));
58 if (value)
59 d |= mask;
60 else
61 d &= ~mask;
62 outw(d, GPIO_DR(_PORTOF(portpin)));
63}
64
65unsigned int hd64465_gpio_get_pin(int portpin)
66{
67 return inw(GPIO_DR(_PORTOF(portpin))) & (1<<(_PINOF(portpin)));
68}
69
70/* TODO: for cleaner atomicity semantics, add a mask to this routine */
71
72void hd64465_gpio_set_port(int port, unsigned int value)
73{
74 outw(value, GPIO_DR(port));
75}
76
77unsigned int hd64465_gpio_get_port(int port)
78{
79 return inw(GPIO_DR(port));
80}
81
82
83static struct {
84 void (*func)(int portpin, void *dev);
85 void *dev;
86} handlers[GPIO_NPORTS * 8];
87
88static irqreturn_t hd64465_gpio_interrupt(int irq, void *dev)
89{
90 unsigned short port, pin, isr, mask, portpin;
91
92 for (port=0 ; port<GPIO_NPORTS ; port++) {
93 isr = inw(GPIO_ISR(port));
94
95 for (pin=0 ; pin<8 ; pin++) {
96 mask = 1<<pin;
97 if (isr & mask) {
98 portpin = (port<<3)|pin;
99 if (handlers[portpin].func != 0)
100 handlers[portpin].func(portpin, handlers[portpin].dev);
101 else
102 printk(KERN_NOTICE "unexpected GPIO interrupt, pin %c%d\n",
103 port+'A', (int)pin);
104 }
105 }
106
107 /* Write 1s back to ISR to clear it? That's what the manual says.. */
108 outw(isr, GPIO_ISR(port));
109 }
110
111 return IRQ_HANDLED;
112}
113
114void hd64465_gpio_register_irq(int portpin, int mode,
115 void (*handler)(int portpin, void *dev), void *dev)
116{
117 unsigned long flags;
118 unsigned short icr, mask;
119
120 if (handler == 0)
121 return;
122
123 local_irq_save(flags);
124
125 handlers[portpin].func = handler;
126 handlers[portpin].dev = dev;
127
128 /*
129 * Configure Interrupt Control Register
130 */
131 icr = inw(GPIO_ICR(_PORTOF(portpin)));
132 mask = (1<<_PINOF(portpin));
133
134 /* unmask interrupt */
135 icr &= ~mask;
136
137 /* set TS bit */
138 mask <<= 8;
139 icr &= ~mask;
140 if (mode == HD64465_GPIO_RISING)
141 icr |= mask;
142
143 outw(icr, GPIO_ICR(_PORTOF(portpin)));
144
145 local_irq_restore(flags);
146}
147
148void hd64465_gpio_unregister_irq(int portpin)
149{
150 unsigned long flags;
151 unsigned short icr;
152
153 local_irq_save(flags);
154
155 /*
156 * Configure Interrupt Control Register
157 */
158 icr = inw(GPIO_ICR(_PORTOF(portpin)));
159 icr |= (1<<_PINOF(portpin)); /* mask interrupt */
160 outw(icr, GPIO_ICR(_PORTOF(portpin)));
161
162 handlers[portpin].func = 0;
163 handlers[portpin].dev = 0;
164
165 local_irq_restore(flags);
166}
167
168static int __init hd64465_gpio_init(void)
169{
170 if (!request_region(HD64465_REG_GPACR, 0x1000, MODNAME))
171 return -EBUSY;
172 if (request_irq(HD64465_IRQ_GPIO, hd64465_gpio_interrupt,
173 IRQF_DISABLED, MODNAME, 0))
174 goto out_irqfailed;
175
176 printk("HD64465 GPIO layer on irq %d\n", HD64465_IRQ_GPIO);
177
178 return 0;
179
180out_irqfailed:
181 release_region(HD64465_REG_GPACR, 0x1000);
182
183 return -EINVAL;
184}
185
186static void __exit hd64465_gpio_exit(void)
187{
188 release_region(HD64465_REG_GPACR, 0x1000);
189 free_irq(HD64465_IRQ_GPIO, 0);
190}
191
192module_init(hd64465_gpio_init);
193module_exit(hd64465_gpio_exit);
194
195MODULE_LICENSE("GPL");
196
diff --git a/arch/sh/cchips/hd6446x/hd64465/io.c b/arch/sh/cchips/hd6446x/hd64465/io.c
deleted file mode 100644
index 58704d066ae2..000000000000
--- a/arch/sh/cchips/hd6446x/hd64465/io.c
+++ /dev/null
@@ -1,211 +0,0 @@
1/*
2 * $Id: io.c,v 1.4 2003/08/03 03:05:10 lethal Exp $
3 * by Greg Banks <gbanks@pocketpenguins.com>
4 * (c) 2000 PocketPenguins Inc
5 *
6 * Derived from io_hd64461.c, which bore the message:
7 * Copyright (C) 2000 YAEGASHI Takeshi
8 *
9 * Typical I/O routines for HD64465 system.
10 */
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <asm/io.h>
15#include <asm/hd64465/hd64465.h>
16
17
18#define HD64465_DEBUG 0
19
20#if HD64465_DEBUG
21#define DPRINTK(args...) printk(args)
22#define DIPRINTK(n, args...) if (hd64465_io_debug>(n)) printk(args)
23#else
24#define DPRINTK(args...)
25#define DIPRINTK(n, args...)
26#endif
27
28
29
30/* This is a hack suitable only for debugging IO port problems */
31int hd64465_io_debug;
32EXPORT_SYMBOL(hd64465_io_debug);
33
34/* Low iomap maps port 0-1K to addresses in 8byte chunks */
35#define HD64465_IOMAP_LO_THRESH 0x400
36#define HD64465_IOMAP_LO_SHIFT 3
37#define HD64465_IOMAP_LO_MASK ((1<<HD64465_IOMAP_LO_SHIFT)-1)
38#define HD64465_IOMAP_LO_NMAP (HD64465_IOMAP_LO_THRESH>>HD64465_IOMAP_LO_SHIFT)
39static unsigned long hd64465_iomap_lo[HD64465_IOMAP_LO_NMAP];
40static unsigned char hd64465_iomap_lo_shift[HD64465_IOMAP_LO_NMAP];
41
42/* High iomap maps port 1K-64K to addresses in 1K chunks */
43#define HD64465_IOMAP_HI_THRESH 0x10000
44#define HD64465_IOMAP_HI_SHIFT 10
45#define HD64465_IOMAP_HI_MASK ((1<<HD64465_IOMAP_HI_SHIFT)-1)
46#define HD64465_IOMAP_HI_NMAP (HD64465_IOMAP_HI_THRESH>>HD64465_IOMAP_HI_SHIFT)
47static unsigned long hd64465_iomap_hi[HD64465_IOMAP_HI_NMAP];
48static unsigned char hd64465_iomap_hi_shift[HD64465_IOMAP_HI_NMAP];
49
50#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
51
52void hd64465_port_map(unsigned short baseport, unsigned int nports,
53 unsigned long addr, unsigned char shift)
54{
55 unsigned int port, endport = baseport + nports;
56
57 DPRINTK("hd64465_port_map(base=0x%04hx, n=0x%04hx, addr=0x%08lx,endport=0x%04x)\n",
58 baseport, nports, addr,endport);
59
60 for (port = baseport ;
61 port < endport && port < HD64465_IOMAP_LO_THRESH ;
62 port += (1<<HD64465_IOMAP_LO_SHIFT)) {
63 DPRINTK(" maplo[0x%x] = 0x%08lx\n", port, addr);
64 hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = addr;
65 hd64465_iomap_lo_shift[port>>HD64465_IOMAP_LO_SHIFT] = shift;
66 addr += (1<<(HD64465_IOMAP_LO_SHIFT));
67 }
68
69 for (port = max_t(unsigned int, baseport, HD64465_IOMAP_LO_THRESH);
70 port < endport && port < HD64465_IOMAP_HI_THRESH ;
71 port += (1<<HD64465_IOMAP_HI_SHIFT)) {
72 DPRINTK(" maphi[0x%x] = 0x%08lx\n", port, addr);
73 hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = addr;
74 hd64465_iomap_hi_shift[port>>HD64465_IOMAP_HI_SHIFT] = shift;
75 addr += (1<<(HD64465_IOMAP_HI_SHIFT));
76 }
77}
78EXPORT_SYMBOL(hd64465_port_map);
79
80void hd64465_port_unmap(unsigned short baseport, unsigned int nports)
81{
82 unsigned int port, endport = baseport + nports;
83
84 DPRINTK("hd64465_port_unmap(base=0x%04hx, n=0x%04hx)\n",
85 baseport, nports);
86
87 for (port = baseport ;
88 port < endport && port < HD64465_IOMAP_LO_THRESH ;
89 port += (1<<HD64465_IOMAP_LO_SHIFT)) {
90 hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = 0;
91 }
92
93 for (port = max_t(unsigned int, baseport, HD64465_IOMAP_LO_THRESH);
94 port < endport && port < HD64465_IOMAP_HI_THRESH ;
95 port += (1<<HD64465_IOMAP_HI_SHIFT)) {
96 hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = 0;
97 }
98}
99EXPORT_SYMBOL(hd64465_port_unmap);
100
101unsigned long hd64465_isa_port2addr(unsigned long port)
102{
103 unsigned long addr = 0;
104 unsigned char shift;
105
106 /* handle remapping of low IO ports */
107 if (port < HD64465_IOMAP_LO_THRESH) {
108 addr = hd64465_iomap_lo[port >> HD64465_IOMAP_LO_SHIFT];
109 shift = hd64465_iomap_lo_shift[port >> HD64465_IOMAP_LO_SHIFT];
110 if (addr != 0)
111 addr += (port & HD64465_IOMAP_LO_MASK) << shift;
112 else
113 printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port);
114 } else if (port < HD64465_IOMAP_HI_THRESH) {
115 addr = hd64465_iomap_hi[port >> HD64465_IOMAP_HI_SHIFT];
116 shift = hd64465_iomap_hi_shift[port >> HD64465_IOMAP_HI_SHIFT];
117 if (addr != 0)
118 addr += (port & HD64465_IOMAP_HI_MASK) << shift;
119 else
120 printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port);
121 }
122
123 /* HD64465 internal devices (0xb0000000) */
124 else if (port < 0x20000)
125 addr = CONFIG_HD64465_IOBASE + port - 0x10000;
126
127 /* Whole physical address space (0xa0000000) */
128 else
129 addr = P2SEGADDR(port);
130
131 DIPRINTK(2, "PORT2ADDR(0x%08lx) = 0x%08lx\n", port, addr);
132
133 return addr;
134}
135
136static inline void delay(void)
137{
138 ctrl_inw(0xa0000000);
139}
140
141unsigned char hd64465_inb(unsigned long port)
142{
143 unsigned long addr = PORT2ADDR(port);
144 unsigned long b = (addr == 0 ? 0 : *(volatile unsigned char*)addr);
145
146 DIPRINTK(0, "inb(%08lx) = %02x\n", addr, (unsigned)b);
147 return b;
148}
149
150unsigned char hd64465_inb_p(unsigned long port)
151{
152 unsigned long v;
153 unsigned long addr = PORT2ADDR(port);
154
155 v = (addr == 0 ? 0 : *(volatile unsigned char*)addr);
156 delay();
157 DIPRINTK(0, "inb_p(%08lx) = %02x\n", addr, (unsigned)v);
158 return v;
159}
160
161unsigned short hd64465_inw(unsigned long port)
162{
163 unsigned long addr = PORT2ADDR(port);
164 unsigned long b = (addr == 0 ? 0 : *(volatile unsigned short*)addr);
165 DIPRINTK(0, "inw(%08lx) = %04lx\n", addr, b);
166 return b;
167}
168
169unsigned int hd64465_inl(unsigned long port)
170{
171 unsigned long addr = PORT2ADDR(port);
172 unsigned int b = (addr == 0 ? 0 : *(volatile unsigned long*)addr);
173 DIPRINTK(0, "inl(%08lx) = %08x\n", addr, b);
174 return b;
175}
176
177void hd64465_outb(unsigned char b, unsigned long port)
178{
179 unsigned long addr = PORT2ADDR(port);
180
181 DIPRINTK(0, "outb(%02x, %08lx)\n", (unsigned)b, addr);
182 if (addr != 0)
183 *(volatile unsigned char*)addr = b;
184}
185
186void hd64465_outb_p(unsigned char b, unsigned long port)
187{
188 unsigned long addr = PORT2ADDR(port);
189
190 DIPRINTK(0, "outb_p(%02x, %08lx)\n", (unsigned)b, addr);
191 if (addr != 0)
192 *(volatile unsigned char*)addr = b;
193 delay();
194}
195
196void hd64465_outw(unsigned short b, unsigned long port)
197{
198 unsigned long addr = PORT2ADDR(port);
199 DIPRINTK(0, "outw(%04x, %08lx)\n", (unsigned)b, addr);
200 if (addr != 0)
201 *(volatile unsigned short*)addr = b;
202}
203
204void hd64465_outl(unsigned int b, unsigned long port)
205{
206 unsigned long addr = PORT2ADDR(port);
207 DIPRINTK(0, "outl(%08x, %08lx)\n", b, addr);
208 if (addr != 0)
209 *(volatile unsigned long*)addr = b;
210}
211
diff --git a/arch/sh/cchips/hd6446x/hd64465/setup.c b/arch/sh/cchips/hd6446x/hd64465/setup.c
deleted file mode 100644
index 9b8820c36701..000000000000
--- 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);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 04:36:39 -0500