diff options
| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2010-05-16 19:45:50 -0300 |
|---|---|---|
| committer | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2010-05-16 19:45:50 -0300 |
| commit | 2cbb5c8f5533facb606adc5986ce40da2e987d6d (patch) | |
| tree | 69df71f525eff63af96f44e244f299b53d63c060 /drivers/platform/x86 | |
| parent | 72f19921217c2267adc65cbe69c63da970578a14 (diff) | |
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>
Diffstat (limited to 'drivers/platform/x86')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index a39f159d4f2..29ad2734644 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -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); |