summaryrefslogtreecommitdiff
path: root/packages/linux/linux-2.6.24/mpc8313e-rdb/mpc8313e-rdb-leds.patch
blob: 157df51c04cb7cccabe0ce2b739b1b4a7feb9c01 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
Index: linux-2.6.24.3/drivers/leds/Kconfig
===================================================================
--- linux-2.6.24.3.orig/drivers/leds/Kconfig	2008-02-26 01:20:20.000000000 +0100
+++ linux-2.6.24.3/drivers/leds/Kconfig	2008-02-29 00:43:28.000000000 +0100
@@ -114,6 +114,12 @@
 	help
 	  This option enables support for the CM-X270 LEDs.
 
+config LEDS_MPC8313E_RDB
+	tristate "LED Support for MPC8313E-RDB LEDs"
+	depends on LEDS_CLASS && PPC_83xx
+	help
+	  This option enables support for the LEDs on MPC8313E-RDB board.
+
 comment "LED Triggers"
 
 config LEDS_TRIGGERS
Index: linux-2.6.24.3/drivers/leds/leds-mpc8313e-rdb.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.24.3/drivers/leds/leds-mpc8313e-rdb.c	2008-02-29 01:36:07.000000000 +0100
@@ -0,0 +1,173 @@
+/*
+ * drivers/leds/leds-mpc8313e-rdb.c
+ * Copyright (C) 2007-2008 Jeremy Laine <jeremy.laine@bolloretelecom.eu>
+ * Copyright (C) 2007-2008 Leon Woestenberg <leon@sidebranch.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ * MPC8313E-RDB LEDs driver
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <asm/io.h>
+
+/* note the board is not wired for read access from the LED buffer */
+#define LEDS_BASE 0xfa000000
+#define LEDS_SIZE 0x2
+
+static struct platform_device *leds_pdev = NULL;
+static struct resource *led_mem = NULL;
+static void *led_io = NULL;
+static u8 led_state = 0xff;
+
+struct mpc8313_led {
+	struct led_classdev cdev;
+	u8 bitmask;
+};
+
+static void mpc8313leds_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	struct mpc8313_led *led_dev = container_of(led_cdev, struct mpc8313_led, cdev);
+	if (value)
+		led_state &= ~led_dev->bitmask;
+	else
+		led_state |= led_dev->bitmask;
+	iowrite8(led_state, led_io);
+}
+
+/* led0 is red, led1 is yellow, led2-7 are green */
+static struct mpc8313_led mpc8313_leds[] = {
+	{
+		.cdev = {
+			.name		= "mpc8313:led0",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 128,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led1",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 64,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led2",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 32,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led3",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 16,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led4",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 8,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led5",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 4,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led6",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 2,
+	},
+	{
+		.cdev = {
+			.name		= "mpc8313:led7",
+			.brightness_set	= mpc8313leds_set,
+		},
+		.bitmask	= 1,
+	},
+};
+
+static int mpc8313leds_probe(struct platform_device *pdev)
+{
+	int i;
+	int ret;
+       
+	for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(mpc8313_leds); i++) {
+		ret = led_classdev_register(&pdev->dev,
+			&mpc8313_leds[i].cdev);
+	}
+
+	if (ret < 0 && i > 1) {
+		for (i = i - 2; i >= 0; i--)
+			led_classdev_unregister(&mpc8313_leds[i].cdev);
+	}
+	
+	return ret;
+}
+
+static int mpc8313leds_remove(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = ARRAY_SIZE(mpc8313_leds) - 1; i >= 0; i--)
+		led_classdev_unregister(&mpc8313_leds[i].cdev);
+	
+	return 0;
+}
+
+static struct platform_driver mpc8313leds_driver = {
+	.driver         = {
+		.name   = "mpc8313-leds",
+		.owner  = THIS_MODULE,
+	},
+	.probe          = mpc8313leds_probe,
+	.remove         = mpc8313leds_remove,
+};
+
+static int __init mpc8313leds_init(void)
+{
+	if (!(led_mem = request_mem_region(LEDS_BASE, LEDS_SIZE, "mpc8313-leds")))
+		return -ENOMEM;
+	if (!(led_io = ioremap(LEDS_BASE, LEDS_SIZE)))
+	{
+		release_mem_region(LEDS_BASE, LEDS_SIZE);
+		led_mem = NULL;
+		return -ENOMEM;
+	}
+	iowrite8(led_state, led_io);
+
+	leds_pdev = platform_device_register_simple("mpc8313-leds", -1, NULL, 0);
+
+	return platform_driver_register(&mpc8313leds_driver);
+}
+
+static void __exit mpc8313leds_exit(void)
+{
+	if (led_mem) release_mem_region(LEDS_BASE, LEDS_SIZE);
+	led_mem = NULL;
+	platform_driver_unregister(&mpc8313leds_driver);
+
+	platform_device_unregister(leds_pdev);
+}
+
+module_init(mpc8313leds_init);
+module_exit(mpc8313leds_exit);
+
+MODULE_AUTHOR("Jeremy Laine <jeremy.laine@bolloretelecom.eu>");
+MODULE_DESCRIPTION("MPC8313E-RDB LED driver");
+MODULE_LICENSE("GPL");
Index: linux-2.6.24.3/drivers/leds/Makefile
===================================================================
--- linux-2.6.24.3.orig/drivers/leds/Makefile	2008-02-26 01:20:20.000000000 +0100
+++ linux-2.6.24.3/drivers/leds/Makefile	2008-02-29 00:43:28.000000000 +0100
@@ -19,6 +19,7 @@
 obj-$(CONFIG_LEDS_COBALT_RAQ)		+= leds-cobalt-raq.o
 obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
 obj-$(CONFIG_LEDS_CM_X270)              += leds-cm-x270.o
+obj-$(CONFIG_LEDS_MPC8313E_RDB)		+= leds-mpc8313e-rdb.o
 
 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o