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authorHenrique de Moraes Holschuh <hmh@hmh.eng.br>2009-05-30 18:25:08 +0200
committerLen Brown <len.brown@intel.com>2009-06-18 04:48:22 +0200
commitf21179a47ff8d1046a61c1cf5920244997a4a7bb (patch)
treef90635e4dc7f5602d960a199877a4bb20c6b7be6 /drivers/platform/x86
parentthinkpad-acpi: fix BEEP ACPI handler warnings (diff)
downloadlinux-f21179a47ff8d1046a61c1cf5920244997a4a7bb.tar.xz
linux-f21179a47ff8d1046a61c1cf5920244997a4a7bb.zip
thinkpad-acpi: enhance led support
Add support for extra LEDs on recent ThinkPads, and avoid registering with the led class the LEDs which are not available for a given ThinkPad model. All non-restricted LEDs are always available through the procfs interface, as the firmware doesn't care if an attempt is made to access an invalid LED. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/platform/x86')
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c88
1 files changed, 76 insertions, 12 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index da739d5c9210..06c7c03c8f2f 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -22,7 +22,7 @@
*/
#define TPACPI_VERSION "0.23"
-#define TPACPI_SYSFS_VERSION 0x020300
+#define TPACPI_SYSFS_VERSION 0x020400
/*
* Changelog:
@@ -4815,7 +4815,7 @@ TPACPI_HANDLE(led, ec, "SLED", /* 570 */
"LED", /* all others */
); /* R30, R31 */
-#define TPACPI_LED_NUMLEDS 8
+#define TPACPI_LED_NUMLEDS 16
static struct tpacpi_led_classdev *tpacpi_leds;
static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
@@ -4828,15 +4828,20 @@ static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
"tpacpi::dock_batt",
"tpacpi::unknown_led",
"tpacpi::standby",
+ "tpacpi::dock_status1",
+ "tpacpi::dock_status2",
+ "tpacpi::unknown_led2",
+ "tpacpi::unknown_led3",
+ "tpacpi::thinkvantage",
};
-#define TPACPI_SAFE_LEDS 0x0081U
+#define TPACPI_SAFE_LEDS 0x1081U
static inline bool tpacpi_is_led_restricted(const unsigned int led)
{
#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
return false;
#else
- return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
+ return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
#endif
}
@@ -4998,6 +5003,10 @@ static int __init tpacpi_init_led(unsigned int led)
tpacpi_leds[led].led = led;
+ /* LEDs with no name don't get registered */
+ if (!tpacpi_led_names[led])
+ return 0;
+
tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
if (led_supported == TPACPI_LED_570)
@@ -5016,10 +5025,59 @@ static int __init tpacpi_init_led(unsigned int led)
return rc;
}
+static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
+ TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
+ TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
+ TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
+
+ TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
+ TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
+ TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
+ TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
+ TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
+ TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
+ TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
+ TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
+
+ TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
+ TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
+ TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
+ TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
+ TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
+
+ TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
+ TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
+ TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
+ TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
+
+ /* (1) - may have excess leds enabled on MSB */
+
+ /* Defaults (order matters, keep last, don't reorder!) */
+ { /* Lenovo */
+ .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x1fffU,
+ },
+ { /* IBM ThinkPads with no EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
+ .quirks = 0x00ffU,
+ },
+ { /* IBM ThinkPads with EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x00bfU,
+ },
+};
+
+#undef TPACPI_LEDQ_IBM
+#undef TPACPI_LEDQ_LNV
+
static int __init led_init(struct ibm_init_struct *iibm)
{
unsigned int i;
int rc;
+ unsigned long useful_leds;
vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
@@ -5041,6 +5099,9 @@ static int __init led_init(struct ibm_init_struct *iibm)
vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
str_supported(led_supported), led_supported);
+ if (led_supported == TPACPI_LED_NONE)
+ return 1;
+
tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
GFP_KERNEL);
if (!tpacpi_leds) {
@@ -5048,8 +5109,12 @@ static int __init led_init(struct ibm_init_struct *iibm)
return -ENOMEM;
}
+ useful_leds = tpacpi_check_quirks(led_useful_qtable,
+ ARRAY_SIZE(led_useful_qtable));
+
for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
- if (!tpacpi_is_led_restricted(i)) {
+ if (!tpacpi_is_led_restricted(i) &&
+ test_bit(i, &useful_leds)) {
rc = tpacpi_init_led(i);
if (rc < 0) {
led_exit();
@@ -5059,12 +5124,11 @@ static int __init led_init(struct ibm_init_struct *iibm)
}
#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
- if (led_supported != TPACPI_LED_NONE)
- printk(TPACPI_NOTICE
- "warning: userspace override of important "
- "firmware LEDs is enabled\n");
+ printk(TPACPI_NOTICE
+ "warning: userspace override of important "
+ "firmware LEDs is enabled\n");
#endif
- return (led_supported != TPACPI_LED_NONE)? 0 : 1;
+ return 0;
}
#define str_led_status(s) \
@@ -5094,7 +5158,7 @@ static int led_read(char *p)
}
len += sprintf(p + len, "commands:\t"
- "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
+ "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
return len;
}
@@ -5109,7 +5173,7 @@ static int led_write(char *buf)
return -ENODEV;
while ((cmd = next_cmd(&buf))) {
- if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
+ if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
return -EINVAL;
if (strstr(cmd, "off")) {