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authorMagnus Damm <damm@igel.co.jp>2007-07-24 21:46:32 -0400
committerPaul Mundt <lethal@linux-sh.org>2007-07-24 21:46:32 -0400
commit347b9bdddbc38cfd46c27b3345e7facf651ecb92 (patch)
treee3e1ce8fe710a0f2db1d8722dad674d6a6c34342 /arch/sh/kernel
parentf0b859e3d63a07995f0db294864c2f3c9228f1e4 (diff)
sh: remove old broken pint code
The code in arch/sh/kernel/cpu/irq/pint.c doesn't compile, so let's get rid of it to make space for a future pint implementation on top of intc. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/cpu/irq/Makefile1
-rw-r--r--arch/sh/kernel/cpu/irq/pint.c220
2 files changed, 0 insertions, 221 deletions
diff --git a/arch/sh/kernel/cpu/irq/Makefile b/arch/sh/kernel/cpu/irq/Makefile
index 9ddb446ac930..60bfc05cf354 100644
--- a/arch/sh/kernel/cpu/irq/Makefile
+++ b/arch/sh/kernel/cpu/irq/Makefile
@@ -4,7 +4,6 @@
4obj-y += imask.o 4obj-y += imask.o
5 5
6obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o 6obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o
7obj-$(CONFIG_CPU_HAS_PINT_IRQ) += pint.o
8obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o 7obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o
9obj-$(CONFIG_CPU_HAS_INTC_IRQ) += intc.o 8obj-$(CONFIG_CPU_HAS_INTC_IRQ) += intc.o
10obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o 9obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o
diff --git a/arch/sh/kernel/cpu/irq/pint.c b/arch/sh/kernel/cpu/irq/pint.c
deleted file mode 100644
index 67602685df1a..000000000000
--- a/arch/sh/kernel/cpu/irq/pint.c
+++ /dev/null
@@ -1,220 +0,0 @@
1/*
2 * arch/sh/kernel/cpu/irq/pint.c - Interrupt handling for PINT-based IRQs.
3 *
4 * Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
5 * Copyright (C) 2000 Kazumoto Kojima
6 * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/init.h>
14#include <linux/irq.h>
15#include <linux/module.h>
16
17#include <asm/system.h>
18#include <asm/io.h>
19#include <asm/machvec.h>
20
21#if defined(CONFIG_CPU_SUBTYPE_SH7705)
22#define INTC_INTER 0xA4000014UL
23#define INTC_IPRD 0xA4000018UL
24#define INTC_ICR2 0xA4000012UL
25
26/* PFC */
27#define PORT_PACR 0xA4000100UL
28#define PORT_PBCR 0xA4000102UL
29#define PORT_PCCR 0xA4000104UL
30#define PORT_PDCR 0xA4000106UL
31#define PORT_PECR 0xA4000108UL
32#define PORT_PFCR 0xA400010AUL
33#define PORT_PGCR 0xA400010CUL
34#define PORT_PHCR 0xA400010EUL
35#define PORT_PJCR 0xA4000110UL
36#define PORT_PKCR 0xA4000112UL
37#define PORT_PLCR 0xA4000114UL
38#define PORT_PMCR 0xA4000118UL
39#define PORT_PNCR 0xA400011AUL
40#define PORT_PECR2 0xA4050148UL
41#define PORT_PFCR2 0xA405014AUL
42#define PORT_PNCR2 0xA405015AUL
43
44/* I/O port */
45#define PORT_PADR 0xA4000120UL
46#define PORT_PBDR 0xA4000122UL
47#define PORT_PCDR 0xA4000124UL
48#define PORT_PDDR 0xA4000126UL
49#define PORT_PEDR 0xA4000128UL
50#define PORT_PFDR 0xA400012AUL
51#define PORT_PGDR 0xA400012CUL
52#define PORT_PHDR 0xA400012EUL
53#define PORT_PJDR 0xA4000130UL
54#define PORT_PKDR 0xA4000132UL
55#define PORT_PLDR 0xA4000134UL
56#define PORT_PMDR 0xA4000138UL
57#define PORT_PNDR 0xA400013AUL
58
59#define PINT0_IRQ 40
60#define PINT8_IRQ 41
61#define PINT_IRQ_BASE 86
62
63#define PINT0_IPR_ADDR INTC_IPRD
64#define PINT0_IPR_POS 3
65#define PINT0_PRIORITY 2
66
67#define PINT8_IPR_ADDR INTC_IPRD
68#define PINT8_IPR_POS 2
69#define PINT8_PRIORITY 2
70
71#endif /* CONFIG_CPU_SUBTYPE_SH7705 */
72
73static unsigned char pint_map[256];
74static unsigned long portcr_mask;
75
76static void enable_pint_irq(unsigned int irq);
77static void disable_pint_irq(unsigned int irq);
78
79/* shutdown is same as "disable" */
80#define shutdown_pint_irq disable_pint_irq
81
82static void mask_and_ack_pint(unsigned int);
83static void end_pint_irq(unsigned int irq);
84
85static unsigned int startup_pint_irq(unsigned int irq)
86{
87 enable_pint_irq(irq);
88 return 0; /* never anything pending */
89}
90
91static struct hw_interrupt_type pint_irq_type = {
92 .typename = "PINT-IRQ",
93 .startup = startup_pint_irq,
94 .shutdown = shutdown_pint_irq,
95 .enable = enable_pint_irq,
96 .disable = disable_pint_irq,
97 .ack = mask_and_ack_pint,
98 .end = end_pint_irq
99};
100
101static void disable_pint_irq(unsigned int irq)
102{
103 unsigned long val;
104
105 val = ctrl_inw(INTC_INTER);
106 val &= ~(1 << (irq - PINT_IRQ_BASE));
107 ctrl_outw(val, INTC_INTER); /* disable PINTn */
108 portcr_mask &= ~(3 << (irq - PINT_IRQ_BASE)*2);
109}
110
111static void enable_pint_irq(unsigned int irq)
112{
113 unsigned long val;
114
115 val = ctrl_inw(INTC_INTER);
116 val |= 1 << (irq - PINT_IRQ_BASE);
117 ctrl_outw(val, INTC_INTER); /* enable PINTn */
118 portcr_mask |= 3 << (irq - PINT_IRQ_BASE)*2;
119}
120
121static void mask_and_ack_pint(unsigned int irq)
122{
123 disable_pint_irq(irq);
124}
125
126static void end_pint_irq(unsigned int irq)
127{
128 if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
129 enable_pint_irq(irq);
130}
131
132void make_pint_irq(unsigned int irq)
133{
134 disable_irq_nosync(irq);
135 irq_desc[irq].chip = &pint_irq_type;
136 disable_pint_irq(irq);
137}
138
139static struct ipr_data pint_ipr_map[] = {
140 { PINT0_IRQ, PINT0_IPR_ADDR, PINT0_IPR_POS, PINT0_PRIORITY },
141 { PINT8_IRQ, PINT8_IPR_ADDR, PINT8_IPR_POS, PINT8_PRIORITY },
142};
143
144void __init init_IRQ_pint(void)
145{
146 int i;
147
148 make_ipr_irq(pint_ipr_map, ARRAY_SIZE(pint_ipr_map));
149
150 enable_irq(PINT0_IRQ);
151 enable_irq(PINT8_IRQ);
152
153 for(i = 0; i < 16; i++)
154 make_pint_irq(PINT_IRQ_BASE + i);
155
156 for(i = 0; i < 256; i++) {
157 if (i & 1)
158 pint_map[i] = 0;
159 else if (i & 2)
160 pint_map[i] = 1;
161 else if (i & 4)
162 pint_map[i] = 2;
163 else if (i & 8)
164 pint_map[i] = 3;
165 else if (i & 0x10)
166 pint_map[i] = 4;
167 else if (i & 0x20)
168 pint_map[i] = 5;
169 else if (i & 0x40)
170 pint_map[i] = 6;
171 else if (i & 0x80)
172 pint_map[i] = 7;
173 }
174}
175
176int ipr_irq_demux(int irq)
177{
178 unsigned long creg, dreg, d, sav;
179
180 if (irq == PINT0_IRQ) {
181#if defined(CONFIG_CPU_SUBTYPE_SH7705) || defined(CONFIG_CPU_SUBTYPE_SH7707)
182 creg = PORT_PACR;
183 dreg = PORT_PADR;
184#else
185 creg = PORT_PCCR;
186 dreg = PORT_PCDR;
187#endif
188 sav = ctrl_inw(creg);
189 ctrl_outw(sav | portcr_mask, creg);
190 d = (~ctrl_inb(dreg) ^ ctrl_inw(INTC_ICR2)) &
191 ctrl_inw(INTC_INTER) & 0xff;
192 ctrl_outw(sav, creg);
193
194 if (d == 0)
195 return irq;
196
197 return PINT_IRQ_BASE + pint_map[d];
198 } else if (irq == PINT8_IRQ) {
199#if defined(CONFIG_CPU_SUBTYPE_SH7705) || defined(CONFIG_CPU_SUBTYPE_SH7707)
200 creg = PORT_PBCR;
201 dreg = PORT_PBDR;
202#else
203 creg = PORT_PFCR;
204 dreg = PORT_PFDR;
205#endif
206 sav = ctrl_inw(creg);
207 ctrl_outw(sav | (portcr_mask >> 16), creg);
208 d = (~ctrl_inb(dreg) ^ (ctrl_inw(INTC_ICR2) >> 8)) &
209 (ctrl_inw(INTC_INTER) >> 8) & 0xff;
210 ctrl_outw(sav, creg);
211
212 if (d == 0)
213 return irq;
214
215 return PINT_IRQ_BASE + 8 + pint_map[d];
216 }
217
218 return irq;
219}
220
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