aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAlan Stern <stern@rowland.harvard.edu>2009-04-27 13:33:16 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 21:44:44 -0700
commit00240c3839d843ccf07abd52806f421f7b87bbdc (patch)
tree4ad3a8c543a7a3de0893b1289086e62fffb98bc6
parent604eb89ffed9fba268582dc44d5b462ea94cc0ca (diff)
PCI: add power-state name strings
This patch (as1235) adds an array of PCI power-state names, together with a simple inline accessor routine. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/pci/pci.c5
-rw-r--r--include/linux/pci.h8
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 1a91bf9687a..07bbb9b3b93 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -24,6 +24,11 @@
#include <asm/setup.h>
#include "pci.h"
+const char *pci_power_names[] = {
+ "error", "D0", "D1", "D2", "D3hot", "D3cold", "unknown",
+};
+EXPORT_SYMBOL_GPL(pci_power_names);
+
unsigned int pci_pm_d3_delay = PCI_PM_D3_WAIT;
#ifdef CONFIG_PCI_DOMAINS
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 72698d89e76..8e366bb0705 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -124,6 +124,14 @@ typedef int __bitwise pci_power_t;
#define PCI_UNKNOWN ((pci_power_t __force) 5)
#define PCI_POWER_ERROR ((pci_power_t __force) -1)
+/* Remember to update this when the list above changes! */
+extern const char *pci_power_names[];
+
+static inline const char *pci_power_name(pci_power_t state)
+{
+ return pci_power_names[1 + (int) state];
+}
+
#define PCI_PM_D2_DELAY 200
#define PCI_PM_D3_WAIT 10
#define PCI_PM_BUS_WAIT 50