aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/pnp/support.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 14:52:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 14:52:52 -0400
commit08acd4f8af42affd8cbed81cc1b69fa12ddb213f (patch)
tree988d15db6233b20db6a500cd5f590c6d2041462d /drivers/pnp/support.c
parentccf2779544eecfcc5447e2028d1029b6d4ff7bb6 (diff)
parent008238b54ac2350babf195084ecedbcf7851a202 (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (179 commits) ACPI: Fix acpi_processor_idle and idle= boot parameters interaction acpi: fix section mismatch warning in pnpacpi intel_menlo: fix build warning ACPI: Cleanup: Remove unneeded, multiple local dummy variables ACPI: video - fix permissions on some proc entries ACPI: video - properly handle errors when registering proc elements ACPI: video - do not store invalid entries in attached_array list ACPI: re-name acpi_pm_ops to acpi_suspend_ops ACER_WMI/ASUS_LAPTOP: fix build bug thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failed ACPI: check a return value correctly in acpi_power_get_context() #if 0 acpi/bay.c:eject_removable_drive() eeepc-laptop: add hwmon fan control eeepc-laptop: add backlight eeepc-laptop: add base driver ACPI: thinkpad-acpi: bump up version to 0.20 ACPI: thinkpad-acpi: fix selects in Kconfig ACPI: thinkpad-acpi: use a private workqueue ACPI: thinkpad-acpi: fluff really minor fix ACPI: thinkpad-acpi: use uppercase for "LED" on user documentation ... Fixed conflicts in drivers/acpi/video.c and drivers/misc/intel_menlow.c manually.
Diffstat (limited to 'drivers/pnp/support.c')
-rw-r--r--drivers/pnp/support.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
index 13c608f5fb30..3eba85ed729c 100644
--- a/drivers/pnp/support.c
+++ b/drivers/pnp/support.c
@@ -25,3 +25,66 @@ int pnp_is_active(struct pnp_dev *dev)
25} 25}
26 26
27EXPORT_SYMBOL(pnp_is_active); 27EXPORT_SYMBOL(pnp_is_active);
28
29/*
30 * Functionally similar to acpi_ex_eisa_id_to_string(), but that's
31 * buried in the ACPI CA, and we can't depend on it being present.
32 */
33void pnp_eisa_id_to_string(u32 id, char *str)
34{
35 id = be32_to_cpu(id);
36
37 /*
38 * According to the specs, the first three characters are five-bit
39 * compressed ASCII, and the left-over high order bit should be zero.
40 * However, the Linux ISAPNP code historically used six bits for the
41 * first character, and there seem to be IDs that depend on that,
42 * e.g., "nEC8241" in the Linux 8250_pnp serial driver and the
43 * FreeBSD sys/pc98/cbus/sio_cbus.c driver.
44 */
45 str[0] = 'A' + ((id >> 26) & 0x3f) - 1;
46 str[1] = 'A' + ((id >> 21) & 0x1f) - 1;
47 str[2] = 'A' + ((id >> 16) & 0x1f) - 1;
48 str[3] = hex_asc((id >> 12) & 0xf);
49 str[4] = hex_asc((id >> 8) & 0xf);
50 str[5] = hex_asc((id >> 4) & 0xf);
51 str[6] = hex_asc((id >> 0) & 0xf);
52 str[7] = '\0';
53}
54
55void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
56{
57#ifdef DEBUG
58 struct resource *res;
59 int i;
60
61 dev_dbg(&dev->dev, "current resources: %s\n", desc);
62
63 for (i = 0; i < PNP_MAX_IRQ; i++) {
64 res = pnp_get_resource(dev, IORESOURCE_IRQ, i);
65 if (res && !(res->flags & IORESOURCE_UNSET))
66 dev_dbg(&dev->dev, " irq %lld flags %#lx\n",
67 (unsigned long long) res->start, res->flags);
68 }
69 for (i = 0; i < PNP_MAX_DMA; i++) {
70 res = pnp_get_resource(dev, IORESOURCE_DMA, i);
71 if (res && !(res->flags & IORESOURCE_UNSET))
72 dev_dbg(&dev->dev, " dma %lld flags %#lx\n",
73 (unsigned long long) res->start, res->flags);
74 }
75 for (i = 0; i < PNP_MAX_PORT; i++) {
76 res = pnp_get_resource(dev, IORESOURCE_IO, i);
77 if (res && !(res->flags & IORESOURCE_UNSET))
78 dev_dbg(&dev->dev, " io %#llx-%#llx flags %#lx\n",
79 (unsigned long long) res->start,
80 (unsigned long long) res->end, res->flags);
81 }
82 for (i = 0; i < PNP_MAX_MEM; i++) {
83 res = pnp_get_resource(dev, IORESOURCE_MEM, i);
84 if (res && !(res->flags & IORESOURCE_UNSET))
85 dev_dbg(&dev->dev, " mem %#llx-%#llx flags %#lx\n",
86 (unsigned long long) res->start,
87 (unsigned long long) res->end, res->flags);
88 }
89#endif
90}