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authorLinus Walleij <linus.walleij@linaro.org>2014-02-27 08:44:17 -0500
committerLinus Walleij <linus.walleij@linaro.org>2014-03-28 05:54:15 -0400
commit1dc7d8374dccf2815294ceb6a1092253f45ba860 (patch)
treebeb594f2cc4adb185b4fd727a29c36860cdb2cfa /arch/arm/plat-versatile
parente4ecf2bda239ddef5f4edd0e05d48bfdf88a475d (diff)
ARM/leds: move ARM Versatile LED driver to leds subsystem
Now that we have converted this driver to a real platform device module-based thing, we move the driver down into the LEDs subsystem and rename the config option to LEDS_VERSATILE. Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Pawel Moll <pawel.moll@arm.com> Acked-by: Bryan Wu <cooloney@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/plat-versatile')
-rw-r--r--arch/arm/plat-versatile/Kconfig6
-rw-r--r--arch/arm/plat-versatile/Makefile1
-rw-r--r--arch/arm/plat-versatile/leds.c110
3 files changed, 0 insertions, 117 deletions
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 2c4332b9f948..fce41e93b6a4 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -6,12 +6,6 @@ config PLAT_VERSATILE_CLOCK
6config PLAT_VERSATILE_CLCD 6config PLAT_VERSATILE_CLCD
7 bool 7 bool
8 8
9config PLAT_VERSATILE_LEDS
10 def_bool y if NEW_LEDS
11 depends on ARCH_REALVIEW || ARCH_VERSATILE
12 select LEDS_CLASS
13 select LEDS_TRIGGERS
14
15config PLAT_VERSATILE_SCHED_CLOCK 9config PLAT_VERSATILE_SCHED_CLOCK
16 def_bool y 10 def_bool y
17 11
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index f88d448b629c..2e0c472958ae 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -2,6 +2,5 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
2 2
3obj-$(CONFIG_PLAT_VERSATILE_CLOCK) += clock.o 3obj-$(CONFIG_PLAT_VERSATILE_CLOCK) += clock.o
4obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o 4obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
5obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
6obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o 5obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o
7obj-$(CONFIG_SMP) += headsmp.o platsmp.o 6obj-$(CONFIG_SMP) += headsmp.o platsmp.o
diff --git a/arch/arm/plat-versatile/leds.c b/arch/arm/plat-versatile/leds.c
deleted file mode 100644
index 80553022d661..000000000000
--- a/arch/arm/plat-versatile/leds.c
+++ /dev/null
@@ -1,110 +0,0 @@
1/*
2 * Driver for the 8 user LEDs found on the RealViews and Versatiles
3 * Based on DaVinci's DM365 board code
4 *
5 * License terms: GNU General Public License (GPL) version 2
6 * Author: Linus Walleij <triad@df.lth.se>
7 */
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/io.h>
12#include <linux/slab.h>
13#include <linux/leds.h>
14#include <linux/platform_device.h>
15
16struct versatile_led {
17 void __iomem *base;
18 struct led_classdev cdev;
19 u8 mask;
20};
21
22/*
23 * The triggers lines up below will only be used if the
24 * LED triggers are compiled in.
25 */
26static const struct {
27 const char *name;
28 const char *trigger;
29} versatile_leds[] = {
30 { "versatile:0", "heartbeat", },
31 { "versatile:1", "mmc0", },
32 { "versatile:2", "cpu0" },
33 { "versatile:3", "cpu1" },
34 { "versatile:4", "cpu2" },
35 { "versatile:5", "cpu3" },
36 { "versatile:6", },
37 { "versatile:7", },
38};
39
40static void versatile_led_set(struct led_classdev *cdev,
41 enum led_brightness b)
42{
43 struct versatile_led *led = container_of(cdev,
44 struct versatile_led, cdev);
45 u32 reg = readl(led->base);
46
47 if (b != LED_OFF)
48 reg |= led->mask;
49 else
50 reg &= ~led->mask;
51 writel(reg, led->base);
52}
53
54static enum led_brightness versatile_led_get(struct led_classdev *cdev)
55{
56 struct versatile_led *led = container_of(cdev,
57 struct versatile_led, cdev);
58 u32 reg = readl(led->base);
59
60 return (reg & led->mask) ? LED_FULL : LED_OFF;
61}
62
63static int versatile_leds_probe(struct platform_device *dev)
64{
65 int i;
66 struct resource *res;
67 void __iomem *base;
68
69 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
70 base = devm_ioremap_resource(&dev->dev, res);
71 if (IS_ERR(base))
72 return PTR_ERR(base);
73
74 /* All off */
75 writel(0, base);
76 for (i = 0; i < ARRAY_SIZE(versatile_leds); i++) {
77 struct versatile_led *led;
78
79 led = kzalloc(sizeof(*led), GFP_KERNEL);
80 if (!led)
81 break;
82
83 led->base = base;
84 led->cdev.name = versatile_leds[i].name;
85 led->cdev.brightness_set = versatile_led_set;
86 led->cdev.brightness_get = versatile_led_get;
87 led->cdev.default_trigger = versatile_leds[i].trigger;
88 led->mask = BIT(i);
89
90 if (led_classdev_register(NULL, &led->cdev) < 0) {
91 kfree(led);
92 break;
93 }
94 }
95
96 return 0;
97}
98
99static struct platform_driver versatile_leds_driver = {
100 .driver = {
101 .name = "versatile-leds",
102 },
103 .probe = versatile_leds_probe,
104};
105
106module_platform_driver(versatile_leds_driver);
107
108MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
109MODULE_DESCRIPTION("ARM Versatile LED driver");
110MODULE_LICENSE("GPL v2");