Messages in this thread Patch in this message | | | Date | Sun, 28 Oct 2007 12:23:33 +0100 | From | Németh Márton <> | Subject | [PATCH 4/4] leds-clevo-mail: hw acceleration for Clevo mail LED driver |
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From: Márton Németh <nm127@freemail.hu>
Add support for hardware accelerated LED blinking for the mail LED commonly found on Clevo notebooks.
Signed-off-by: Márton Németh <nm127@freemail.hu> --- diff -uprN linux-2.6.24-rc1.c/drivers/leds/Kconfig linux-2.6.24-rc1.d/drivers/leds/Kconfig --- linux-2.6.24-rc1.c/drivers/leds/Kconfig 2007-10-28 09:09:45.000000000 +0100 +++ linux-2.6.24-rc1.d/drivers/leds/Kconfig 2007-10-28 09:09:25.000000000 +0100 @@ -122,9 +122,11 @@ config LEDS_CLEVO_MAIL programs through the leds subsystem. This LED have three known mode: off, blink at 0.5Hz and blink at 1Hz.
- As this LED cannot change it's brightness it blinks instead. - The brightness value 0 means off, 1..127 means blink at 0.5Hz - and 128..255 means blink at 1Hz. + The driver supports two kinds of interface: using ledtrig-timer + or through /sys/class/leds/clevo::mail/brightness. As this LED + cannot change it's brightness it blinks instead. The brightness + value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means + blink at 1Hz.
This module can drive the mail LED for the following notebooks:
diff -uprN linux-2.6.24-rc1.c/drivers/leds/leds-clevo-mail.c linux-2.6.24-rc1.d/drivers/leds/leds-clevo-mail.c --- linux-2.6.24-rc1.c/drivers/leds/leds-clevo-mail.c 2007-10-28 10:20:49.000000000 +0100 +++ linux-2.6.24-rc1.d/drivers/leds/leds-clevo-mail.c 2007-10-28 10:20:55.000000000 +0100 @@ -92,9 +92,46 @@ static void clevo_mail_led_set(struct le
}
+static int clevo_mail_led_blink(struct led_classdev *led_cdev, + unsigned long* delay_on, + unsigned long* delay_off) +{ + int status = -EINVAL; + + if (*delay_on == 0 /* ms */ && *delay_off == 0 /* ms */) { + /* Special case: the leds subsystem requested us to + * chose one user friendly blinking of the LED, and + * start it. Let's blink the led slowly (0.5Hz). + */ + *delay_on = 1000; /* ms */ + *delay_off = 1000; /* ms */ + i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ); + status = 0; + + } else if (*delay_on == 500 /* ms */ && *delay_off == 500 /* ms */) { + /* blink the led with 1Hz */ + i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ); + status = 0; + + } else if (*delay_on == 1000 /* ms */ && *delay_off == 1000 /* ms */) { + /* blink the led with 0.5Hz */ + i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ); + status = 0; + + } else { + printk(KERN_DEBUG KBUILD_MODNAME + ": clevo_mail_led_blink(..., %lu, %lu)," + " returning -EINVAL (unsupported)\n", + *delay_on, *delay_off); + } + + return status; +} + static struct led_classdev clevo_mail_led = { .name = "clevo::mail", .brightness_set = clevo_mail_led_set, + .blink_set = clevo_mail_led_blink, };
static int __init clevo_mail_led_probe(struct platform_device *pdev) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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