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ACPI: thinkpad-acpi: add debug mode 

Add a debug mode parameter and verbose debug mode Kconfig option.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh 2007-04-21 11:08:30 -03:00 committed by Len Brown
parent f51d1a3984
commit 132ce09123
4 changed files with 39 additions and 0 deletions
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13
Documentation/thinkpad-acpi.txt
View File

@ -699,3 +699,16 @@ for example:
modprobe thinkpad_acpi hotkey=enable,0xffff video=auto_disable
Enabling debugging output
-------------------------
The module takes a debug paramater which can be used to selectively
enable various classes of debugging output, for example:
modprobe ibm_acpi debug=0xffff
will enable all debugging output classes. It takes a bitmask, so
to enable more than one output class, just add their values.
There is also a kernel build option to enable more debugging
information, which may be necessary to debug driver problems.

10
drivers/misc/Kconfig
View File

@ -137,6 +137,16 @@ config THINKPAD_ACPI
If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
config THINKPAD_ACPI_DEBUG
bool "Verbose debug mode"
depends on THINKPAD_ACPI
default n
---help---
Enables extra debugging information, at the expense of a slightly
increase in driver size.
If you are not sure, say N here.
config THINKPAD_ACPI_DOCK
bool "Legacy Docking Station Support"
depends on THINKPAD_ACPI

3
drivers/misc/thinkpad_acpi.c
View File

@ -2684,6 +2684,9 @@ static int __init set_ibm_param(const char *val, struct kernel_param *kp)
static int experimental;
module_param(experimental, int, 0);
static u32 dbg_level;
module_param_named(debug, dbg_level, uint, 0);
#define IBM_PARAM(feature) \
module_param_call(feature, set_ibm_param, NULL, NULL, 0)

13
drivers/misc/thinkpad_acpi.h
View File

@ -74,6 +74,18 @@
#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
/* Debugging */
#define TPACPI_DBG_ALL 0xffff
#define dbg_printk(a_dbg_level, format, arg...) \
do { if (dbg_level & a_dbg_level) \
printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
#ifdef CONFIG_THINKPAD_ACPI_DEBUG
#define vdbg_printk(a_dbg_level, format, arg...) \
dbg_printk(a_dbg_level, format, ## arg)
#else
#define vdbg_printk(a_dbg_level, format, arg...)
#endif
/* ACPI HIDs */
#define IBM_HKEY_HID "IBM0068"
#define IBM_PCI_HID "PNP0A03"
@ -112,6 +124,7 @@ static char *next_cmd(char **cmds);
/* Module */
static int experimental;
static u32 dbg_level;
static char *ibm_thinkpad_ec_found;
static char* check_dmi_for_ec(void);