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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/mach-ebsa110/leds.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/mach-ebsa110/leds.c')
-rw-r--r-- | kernel/arch/arm/mach-ebsa110/leds.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-ebsa110/leds.c b/kernel/arch/arm/mach-ebsa110/leds.c new file mode 100644 index 000000000..0398258c2 --- /dev/null +++ b/kernel/arch/arm/mach-ebsa110/leds.c @@ -0,0 +1,71 @@ +/* + * Driver for the LED found on the EBSA110 machine + * Based on Versatile and RealView machine LED code + * + * License terms: GNU General Public License (GPL) version 2 + * Author: Bryan Wu <bryan.wu@canonical.com> + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/leds.h> + +#include <asm/mach-types.h> + +#include "core.h" + +#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +static void ebsa110_led_set(struct led_classdev *cdev, + enum led_brightness b) +{ + u8 reg = __raw_readb(SOFT_BASE); + + if (b != LED_OFF) + reg |= 0x80; + else + reg &= ~0x80; + + __raw_writeb(reg, SOFT_BASE); +} + +static enum led_brightness ebsa110_led_get(struct led_classdev *cdev) +{ + u8 reg = __raw_readb(SOFT_BASE); + + return (reg & 0x80) ? LED_FULL : LED_OFF; +} + +static int __init ebsa110_leds_init(void) +{ + + struct led_classdev *cdev; + int ret; + + if (!machine_is_ebsa110()) + return -ENODEV; + + cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); + if (!cdev) + return -ENOMEM; + + cdev->name = "ebsa110:0"; + cdev->brightness_set = ebsa110_led_set; + cdev->brightness_get = ebsa110_led_get; + cdev->default_trigger = "heartbeat"; + + ret = led_classdev_register(NULL, cdev); + if (ret < 0) { + kfree(cdev); + return ret; + } + + return 0; +} + +/* + * Since we may have triggers on any subsystem, defer registration + * until after subsystem_init. + */ +fs_initcall(ebsa110_leds_init); +#endif |