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thinkpad-acpi: don't depend on led_path for led firmware type (v2) 

Don't depend on the contents of led_path to know which LED interface
the firmware wants.

This removes the only user of *_path for the thinkpad-acpi ACPI
handlers, which will simplify future code.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
This commit is contained in:
Henrique de Moraes Holschuh 2010-05-16 19:45:50 -03:00
parent 72f1992121
commit 2cbb5c8f55
1 changed files with 28 additions and 19 deletions
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47
drivers/platform/x86/thinkpad_acpi.c
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@ -5009,11 +5009,7 @@ enum { /* For TPACPI_LED_OLD */
static enum led_access_mode led_supported;
TPACPI_HANDLE(led, ec, "SLED", /* 570 */
"SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
/* T20-22, X20-21 */
"LED", /* all others */
); /* R30, R31 */
static acpi_handle led_handle;
#define TPACPI_LED_NUMLEDS 16
static struct tpacpi_led_classdev *tpacpi_leds;
@ -5273,6 +5269,32 @@ static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
#undef TPACPI_LEDQ_IBM
#undef TPACPI_LEDQ_LNV
static enum led_access_mode __init led_init_detect_mode(void)
{
acpi_status status;
if (tpacpi_is_ibm()) {
/* 570 */
status = acpi_get_handle(ec_handle, "SLED", &led_handle);
if (ACPI_SUCCESS(status))
return TPACPI_LED_570;
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
if (ACPI_SUCCESS(status))
return TPACPI_LED_OLD;
}
/* most others */
status = acpi_get_handle(ec_handle, "LED", &led_handle);
if (ACPI_SUCCESS(status))
return TPACPI_LED_NEW;
/* R30, R31, and unknown firmwares */
led_handle = NULL;
return TPACPI_LED_NONE;
}
static int __init led_init(struct ibm_init_struct *iibm)
{
unsigned int i;
@ -5281,20 +5303,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
TPACPI_ACPIHANDLE_INIT(led);
if (!led_handle)
/* led not supported on R30, R31 */
led_supported = TPACPI_LED_NONE;
else if (tpacpi_is_ibm() && strlencmp(led_path, "SLED") == 0)
/* 570 */
led_supported = TPACPI_LED_570;
else if (tpacpi_is_ibm() && strlencmp(led_path, "SYSL") == 0)
/* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
led_supported = TPACPI_LED_OLD;
else
/* all others */
led_supported = TPACPI_LED_NEW;
led_supported = led_init_detect_mode();
vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
str_supported(led_supported), led_supported);