Root/
1 | /* |
2 | * WAX Device Driver |
3 | * |
4 | * (c) Copyright 2000 The Puffin Group Inc. |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * by Helge Deller <deller@gmx.de> |
12 | */ |
13 | |
14 | #include <linux/errno.h> |
15 | #include <linux/init.h> |
16 | #include <linux/interrupt.h> |
17 | #include <linux/ioport.h> |
18 | #include <linux/slab.h> |
19 | #include <linux/module.h> |
20 | #include <linux/types.h> |
21 | |
22 | #include <asm/io.h> |
23 | #include <asm/hardware.h> |
24 | |
25 | #include "gsc.h" |
26 | |
27 | #define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */ |
28 | |
29 | static void wax_choose_irq(struct parisc_device *dev, void *ctrl) |
30 | { |
31 | int irq; |
32 | |
33 | switch (dev->id.sversion) { |
34 | case 0x73: irq = 1; break; /* i8042 General */ |
35 | case 0x8c: irq = 6; break; /* Serial */ |
36 | case 0x90: irq = 10; break; /* EISA */ |
37 | default: return; /* Unknown */ |
38 | } |
39 | |
40 | gsc_asic_assign_irq(ctrl, irq, &dev->irq); |
41 | |
42 | switch (dev->id.sversion) { |
43 | case 0x73: irq = 2; break; /* i8042 High-priority */ |
44 | case 0x90: irq = 0; break; /* EISA NMI */ |
45 | default: return; /* No secondary IRQ */ |
46 | } |
47 | |
48 | gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq); |
49 | } |
50 | |
51 | static void __init |
52 | wax_init_irq(struct gsc_asic *wax) |
53 | { |
54 | unsigned long base = wax->hpa; |
55 | |
56 | /* Wax-off */ |
57 | gsc_writel(0x00000000, base+OFFSET_IMR); |
58 | |
59 | /* clear pending interrupts */ |
60 | gsc_readl(base+OFFSET_IRR); |
61 | |
62 | /* We're not really convinced we want to reset the onboard |
63 | * devices. Firmware does it for us... |
64 | */ |
65 | |
66 | /* Resets */ |
67 | // gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */ |
68 | // gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */ |
69 | } |
70 | |
71 | static int __init wax_init_chip(struct parisc_device *dev) |
72 | { |
73 | struct gsc_asic *wax; |
74 | struct parisc_device *parent; |
75 | struct gsc_irq gsc_irq; |
76 | int ret; |
77 | |
78 | wax = kzalloc(sizeof(*wax), GFP_KERNEL); |
79 | if (!wax) |
80 | return -ENOMEM; |
81 | |
82 | wax->name = "wax"; |
83 | wax->hpa = dev->hpa.start; |
84 | |
85 | wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */ |
86 | printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa); |
87 | |
88 | /* Stop wax hissing for a bit */ |
89 | wax_init_irq(wax); |
90 | |
91 | /* the IRQ wax should use */ |
92 | dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ); |
93 | if (dev->irq < 0) { |
94 | printk(KERN_ERR "%s(): cannot get GSC irq\n", |
95 | __func__); |
96 | kfree(wax); |
97 | return -EBUSY; |
98 | } |
99 | |
100 | wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; |
101 | |
102 | ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax); |
103 | if (ret < 0) { |
104 | kfree(wax); |
105 | return ret; |
106 | } |
107 | |
108 | /* enable IRQ's for devices below WAX */ |
109 | gsc_writel(wax->eim, wax->hpa + OFFSET_IAR); |
110 | |
111 | /* Done init'ing, register this driver */ |
112 | ret = gsc_common_setup(dev, wax); |
113 | if (ret) { |
114 | kfree(wax); |
115 | return ret; |
116 | } |
117 | |
118 | gsc_fixup_irqs(dev, wax, wax_choose_irq); |
119 | /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */ |
120 | parent = parisc_parent(dev); |
121 | if (parent->id.hw_type != HPHW_IOA) { |
122 | gsc_fixup_irqs(parent, wax, wax_choose_irq); |
123 | } |
124 | |
125 | return ret; |
126 | } |
127 | |
128 | static struct parisc_device_id wax_tbl[] = { |
129 | { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e }, |
130 | { 0, } |
131 | }; |
132 | |
133 | MODULE_DEVICE_TABLE(parisc, wax_tbl); |
134 | |
135 | struct parisc_driver wax_driver = { |
136 | .name = "wax", |
137 | .id_table = wax_tbl, |
138 | .probe = wax_init_chip, |
139 | }; |
140 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9