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-rw-r--r--drivers/pnp/quirks.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c
new file mode 100644
index 000000000000..596a02d7e03d
--- /dev/null
+++ b/drivers/pnp/quirks.c
@@ -0,0 +1,152 @@
1/*
2 * This file contains quirk handling code for PnP devices
3 * Some devices do not report all their resources, and need to have extra
4 * resources added. This is most easily accomplished at initialisation time
5 * when building up the resource structure for the first time.
6 *
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
8 *
9 * Heavily based on PCI quirks handling which is
10 *
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
12 */
13
14#include <linux/config.h>
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/string.h>
18#include <linux/slab.h>
19
20#ifdef CONFIG_PNP_DEBUG
21 #define DEBUG
22#else
23 #undef DEBUG
24#endif
25
26#include <linux/pnp.h>
27#include "base.h"
28
29
30static void quirk_awe32_resources(struct pnp_dev *dev)
31{
32 struct pnp_port *port, *port2, *port3;
33 struct pnp_option *res = dev->dependent;
34
35 /*
36 * Unfortunately the isapnp_add_port_resource is too tightly bound
37 * into the PnP discovery sequence, and cannot be used. Link in the
38 * two extra ports (at offset 0x400 and 0x800 from the one given) by
39 * hand.
40 */
41 for ( ; res ; res = res->next ) {
42 port2 = pnp_alloc(sizeof(struct pnp_port));
43 if (!port2)
44 return;
45 port3 = pnp_alloc(sizeof(struct pnp_port));
46 if (!port3) {
47 kfree(port2);
48 return;
49 }
50 port = res->port;
51 memcpy(port2, port, sizeof(struct pnp_port));
52 memcpy(port3, port, sizeof(struct pnp_port));
53 port->next = port2;
54 port2->next = port3;
55 port2->min += 0x400;
56 port2->max += 0x400;
57 port3->min += 0x800;
58 port3->max += 0x800;
59 }
60 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
61}
62
63static void quirk_cmi8330_resources(struct pnp_dev *dev)
64{
65 struct pnp_option *res = dev->dependent;
66 unsigned long tmp;
67
68 for ( ; res ; res = res->next ) {
69
70 struct pnp_irq *irq;
71 struct pnp_dma *dma;
72
73 for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10
74 tmp = 0x04A0;
75 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
76 }
77
78 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
79 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
80 dma->map = 0x000A;
81 }
82 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
83}
84
85static void quirk_sb16audio_resources(struct pnp_dev *dev)
86{
87 struct pnp_port *port;
88 struct pnp_option *res = dev->dependent;
89 int changed = 0;
90
91 /*
92 * The default range on the mpu port for these devices is 0x388-0x388.
93 * Here we increase that range so that two such cards can be
94 * auto-configured.
95 */
96
97 for( ; res ; res = res->next ) {
98 port = res->port;
99 if(!port)
100 continue;
101 port = port->next;
102 if(!port)
103 continue;
104 port = port->next;
105 if(!port)
106 continue;
107 if(port->min != port->max)
108 continue;
109 port->max += 0x70;
110 changed = 1;
111 }
112 if(changed)
113 printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
114 return;
115}
116
117/*
118 * PnP Quirks
119 * Cards or devices that need some tweaking due to incomplete resource info
120 */
121
122static struct pnp_fixup pnp_fixups[] = {
123 /* Soundblaster awe io port quirk */
124 { "CTL0021", quirk_awe32_resources },
125 { "CTL0022", quirk_awe32_resources },
126 { "CTL0023", quirk_awe32_resources },
127 /* CMI 8330 interrupt and dma fix */
128 { "@X@0001", quirk_cmi8330_resources },
129 /* Soundblaster audio device io port range quirk */
130 { "CTL0001", quirk_sb16audio_resources },
131 { "CTL0031", quirk_sb16audio_resources },
132 { "CTL0041", quirk_sb16audio_resources },
133 { "CTL0042", quirk_sb16audio_resources },
134 { "CTL0043", quirk_sb16audio_resources },
135 { "CTL0044", quirk_sb16audio_resources },
136 { "CTL0045", quirk_sb16audio_resources },
137 { "" }
138};
139
140void pnp_fixup_device(struct pnp_dev *dev)
141{
142 int i = 0;
143
144 while (*pnp_fixups[i].id) {
145 if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
146 pnp_dbg("Calling quirk for %s",
147 dev->dev.bus_id);
148 pnp_fixups[i].quirk_function(dev);
149 }
150 i++;
151 }
152}