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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 18:46:13 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 18:46:13 -0700 |
commit | 8f446a7a069e0af0639385f67c78ee2279bca04c (patch) | |
tree | 580cf495616b36ca0af0826afa87c430cdc1e7cb /arch/arm/mach-ebsa110 | |
parent | 84be4ae2c038e2b03d650cbf2a7cfd9e8d6e9e51 (diff) | |
parent | 04ef037c926ddb31088c976538e29eada4fd1490 (diff) | |
download | linux-8f446a7a069e0af0639385f67c78ee2279bca04c.tar.gz |
Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc driver specific changes from Olof Johansson: - A long-coming conversion of various platforms to a common LED infrastructure - AT91 is moved over to use the newer MCI driver for MMC - Pincontrol conversions for samsung platforms - DT bindings for gscaler on samsung - i2c driver fixes for tegra, acked by i2c maintainer Fix up conflicts as per Olof. * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits) drivers: bus: omap_l3: use resources instead of hardcoded irqs pinctrl: exynos: Fix wakeup IRQ domain registration check pinctrl: samsung: Uninline samsung_pinctrl_get_soc_data pinctrl: exynos: Correct the detection of wakeup-eint node pinctrl: exynos: Mark exynos_irq_demux_eint as inline pinctrl: exynos: Handle only unmasked wakeup interrupts pinctrl: exynos: Fix typos in gpio/wkup _irq_mask pinctrl: exynos: Set pin function to EINT in irq_set_type of GPIO EINTa drivers: bus: Move the OMAP interconnect driver to drivers/bus/ i2c: tegra: dynamically control fast clk i2c: tegra: I2_M_NOSTART functionality not supported in Tegra20 ARM: tegra: clock: remove unused clock entry for i2c ARM: tegra: clock: add connection name in i2c clock entry i2c: tegra: pass proper name for getting clock ARM: tegra: clock: add i2c fast clock entry in clock table ARM: EXYNOS: Adds G-Scaler device from Device Tree ARM: EXYNOS: Add clock support for G-Scaler ARM: EXYNOS: Enable pinctrl driver support for EXYNOS4 device tree enabled platform ARM: dts: Add pinctrl node entries for SAMSUNG EXYNOS4210 SoC ARM: EXYNOS: skip wakeup interrupt setup if pinctrl driver is used ...
Diffstat (limited to 'arch/arm/mach-ebsa110')
-rw-r--r-- | arch/arm/mach-ebsa110/Makefile | 4 | ||||
-rw-r--r-- | arch/arm/mach-ebsa110/leds.c | 81 |
2 files changed, 51 insertions, 34 deletions
diff --git a/arch/arm/mach-ebsa110/Makefile b/arch/arm/mach-ebsa110/Makefile index 6520ac835802..935e4af01a27 100644 --- a/arch/arm/mach-ebsa110/Makefile +++ b/arch/arm/mach-ebsa110/Makefile @@ -4,9 +4,7 @@ # Object file lists. -obj-y := core.o io.o +obj-y := core.o io.o leds.o obj-m := obj-n := obj- := - -obj-$(CONFIG_LEDS) += leds.o diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c index 99e14e362500..0398258c20cd 100644 --- a/arch/arm/mach-ebsa110/leds.c +++ b/arch/arm/mach-ebsa110/leds.c @@ -1,52 +1,71 @@ /* - * linux/arch/arm/mach-ebsa110/leds.c + * Driver for the LED found on the EBSA110 machine + * Based on Versatile and RealView machine LED code * - * Copyright (C) 1998 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * EBSA-110 LED control routines. We use the led as follows: - * - * - Red - toggles state every 50 timer interrupts + * License terms: GNU General Public License (GPL) version 2 + * Author: Bryan Wu <bryan.wu@canonical.com> */ -#include <linux/module.h> -#include <linux/spinlock.h> +#include <linux/kernel.h> #include <linux/init.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/leds.h> -#include <mach/hardware.h> -#include <asm/leds.h> #include <asm/mach-types.h> #include "core.h" -static spinlock_t leds_lock; - -static void ebsa110_leds_event(led_event_t ledevt) +#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +static void ebsa110_led_set(struct led_classdev *cdev, + enum led_brightness b) { - unsigned long flags; + u8 reg = __raw_readb(SOFT_BASE); - spin_lock_irqsave(&leds_lock, flags); + if (b != LED_OFF) + reg |= 0x80; + else + reg &= ~0x80; - switch(ledevt) { - case led_timer: - *(volatile unsigned char *)SOFT_BASE ^= 128; - break; + __raw_writeb(reg, SOFT_BASE); +} - default: - break; - } +static enum led_brightness ebsa110_led_get(struct led_classdev *cdev) +{ + u8 reg = __raw_readb(SOFT_BASE); - spin_unlock_irqrestore(&leds_lock, flags); + return (reg & 0x80) ? LED_FULL : LED_OFF; } -static int __init leds_init(void) +static int __init ebsa110_leds_init(void) { - if (machine_is_ebsa110()) - leds_event = ebsa110_leds_event; + + 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; } -__initcall(leds_init); +/* + * Since we may have triggers on any subsystem, defer registration + * until after subsystem_init. + */ +fs_initcall(ebsa110_leds_init); +#endif |