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.
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
9 * Heavily based on PCI quirks handling which is
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/slab.h>
18 #include <linux/pnp.h>
22 static void quirk_awe32_resources(struct pnp_dev *dev)
24 struct pnp_port *port, *port2, *port3;
25 struct pnp_option *res = dev->dependent;
28 * Unfortunately the isapnp_add_port_resource is too tightly bound
29 * into the PnP discovery sequence, and cannot be used. Link in the
30 * two extra ports (at offset 0x400 and 0x800 from the one given) by
33 for (; res; res = res->next) {
34 port2 = pnp_alloc(sizeof(struct pnp_port));
37 port3 = pnp_alloc(sizeof(struct pnp_port));
43 memcpy(port2, port, sizeof(struct pnp_port));
44 memcpy(port3, port, sizeof(struct pnp_port));
52 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
55 static void quirk_cmi8330_resources(struct pnp_dev *dev)
57 struct pnp_option *res = dev->dependent;
60 for (; res; res = res->next) {
65 for (irq = res->irq; irq; irq = irq->next) { // Valid irqs are 5, 7, 10
67 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
70 for (dma = res->dma; dma; dma = dma->next) // Valid 8bit dma channels are 1,3
71 if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
75 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
78 static void quirk_sb16audio_resources(struct pnp_dev *dev)
80 struct pnp_port *port;
81 struct pnp_option *res = dev->dependent;
85 * The default range on the mpu port for these devices is 0x388-0x388.
86 * Here we increase that range so that two such cards can be
90 for (; res; res = res->next) {
100 if (port->min != port->max)
107 "pnp: SB audio device quirk - increasing port range\n");
112 * Cards or devices that need some tweaking due to incomplete resource info
115 static struct pnp_fixup pnp_fixups[] = {
116 /* Soundblaster awe io port quirk */
117 {"CTL0021", quirk_awe32_resources},
118 {"CTL0022", quirk_awe32_resources},
119 {"CTL0023", quirk_awe32_resources},
120 /* CMI 8330 interrupt and dma fix */
121 {"@X@0001", quirk_cmi8330_resources},
122 /* Soundblaster audio device io port range quirk */
123 {"CTL0001", quirk_sb16audio_resources},
124 {"CTL0031", quirk_sb16audio_resources},
125 {"CTL0041", quirk_sb16audio_resources},
126 {"CTL0042", quirk_sb16audio_resources},
127 {"CTL0043", quirk_sb16audio_resources},
128 {"CTL0044", quirk_sb16audio_resources},
129 {"CTL0045", quirk_sb16audio_resources},
133 void pnp_fixup_device(struct pnp_dev *dev)
137 while (*pnp_fixups[i].id) {
138 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
139 pnp_dbg("Calling quirk for %s", dev->dev.bus_id);
140 pnp_fixups[i].quirk_function(dev);