redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ARM: integrator: move core module LED to device tree 

This gets rid of the custom LED driver in the Integrator directory
altogether and switches us over to using the syscon LEDs for this.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2014-10-22 10:05:44 +02:00
parent 7e61006436
commit bcc397de5a
3 changed files with 11 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/boot/dts/integrator.dtsi
View File

@ -8,6 +8,16 @@
core-module@10000000 {
compatible = "arm,core-module-integrator", "syscon";
reg = <0x10000000 0x200>;
/* Use core module LED to indicate CPU load */
led@0c.0 {
compatible = "register-bit-led";
offset = <0x0c>;
mask = <0x01>;
label = "integrator:core_module";
linux,default-trigger = "cpu0";
default-state = "on";
};
};
ebi@12000000 {

2
arch/arm/mach-integrator/Makefile
View File

@ -4,7 +4,7 @@
# Object file lists.
obj-y := core.o lm.o leds.o
obj-y := core.o lm.o
obj-$(CONFIG_ARCH_INTEGRATOR_AP) += integrator_ap.o
obj-$(CONFIG_ARCH_INTEGRATOR_CP) += integrator_cp.o

80
arch/arm/mach-integrator/leds.c
View File

@ -1,80 +0,0 @@
/*
* Driver for the 4 user LEDs found on the Integrator AP/CP baseboard
* 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 "hardware.h"
#include "cm.h"
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct integrator_led {
struct led_classdev cdev;
};
/*
* The triggers lines up below will only be used if the
* LED triggers are compiled in.
*/
static const struct {
const char *name;
const char *trigger;
} integrator_leds[] = {
{ "integrator:core_module", "cpu0", },
};
static void cm_led_set(struct led_classdev *cdev,
enum led_brightness b)
{
if (b != LED_OFF)
cm_control(CM_CTRL_LED, CM_CTRL_LED);
else
cm_control(CM_CTRL_LED, 0);
}
static enum led_brightness cm_led_get(struct led_classdev *cdev)
{
u32 reg = cm_get();
return (reg & CM_CTRL_LED) ? LED_FULL : LED_OFF;
}
static int __init integrator_leds_init(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(integrator_leds); i++) {
struct integrator_led *led;
led = kzalloc(sizeof(*led), GFP_KERNEL);
if (!led)
break;
led->cdev.name = integrator_leds[i].name;
led->cdev.brightness_set = cm_led_set;
led->cdev.brightness_get = cm_led_get;
led->cdev.default_trigger = integrator_leds[i].trigger;
if (led_classdev_register(NULL, &led->cdev) < 0) {
kfree(led);
break;
}
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(integrator_leds_init);
#endif