Root/target/linux/ifxmips/patches-2.6.30/160-led.patch

1Index: linux-2.6.30.8/drivers/leds/Kconfig
2===================================================================
3--- linux-2.6.30.8.orig/drivers/leds/Kconfig 2009-10-19 21:31:31.000000000 +0200
4+++ linux-2.6.30.8/drivers/leds/Kconfig 2009-10-19 21:31:32.000000000 +0200
5@@ -227,6 +227,12 @@
6       This option enables support for BD2802GU RGB LED driver chips
7       accessed via the I2C bus.
8 
9+config LEDS_IFXMIPS
10+ tristate "LED Support for IFXMIPS LEDs"
11+ depends on LEDS_CLASS && IFXMIPS
12+ help
13+ This option enables support for the CM-X270 LEDs.
14+
15 comment "LED Triggers"
16 
17 config LEDS_TRIGGERS
18Index: linux-2.6.30.8/drivers/leds/Makefile
19===================================================================
20--- linux-2.6.30.8.orig/drivers/leds/Makefile 2009-10-19 21:31:31.000000000 +0200
21+++ linux-2.6.30.8/drivers/leds/Makefile 2009-10-19 21:31:32.000000000 +0200
22@@ -27,6 +27,7 @@
23 obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
24 obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o
25 obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
26+obj-$(CONFIG_LEDS_IFXMIPS) += leds-ifxmips.o
27 
28 # LED SPI Drivers
29 obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
30Index: linux-2.6.30.8/drivers/leds/leds-ifxmips.c
31===================================================================
32--- /dev/null 1970-01-01 00:00:00.000000000 +0000
33+++ linux-2.6.30.8/drivers/leds/leds-ifxmips.c 2009-10-19 21:39:59.000000000 +0200
34@@ -0,0 +1,196 @@
35+/*
36+ * This program is free software; you can redistribute it and/or modify
37+ * it under the terms of the GNU General Public License as published by
38+ * the Free Software Foundation; either version 2 of the License, or
39+ * (at your option) any later version.
40+ *
41+ * This program is distributed in the hope that it will be useful,
42+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
43+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
44+ * GNU General Public License for more details.
45+ *
46+ * You should have received a copy of the GNU General Public License
47+ * along with this program; if not, write to the Free Software
48+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
49+ *
50+ * Copyright (C) 2006 infineon
51+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
52+ *
53+ */
54+
55+#include <linux/kernel.h>
56+#include <linux/module.h>
57+#include <linux/version.h>
58+#include <linux/types.h>
59+#include <linux/fs.h>
60+#include <linux/init.h>
61+#include <linux/platform_device.h>
62+#include <linux/uaccess.h>
63+#include <linux/unistd.h>
64+#include <linux/errno.h>
65+#include <linux/leds.h>
66+#include <linux/delay.h>
67+
68+#include <ifxmips.h>
69+#include <ifxmips_gpio.h>
70+#include <ifxmips_pmu.h>
71+
72+#define DRVNAME "ifxmips_led"
73+
74+/* might need to be changed depending on shift register used on the pcb */
75+#if 1
76+#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_FALLING
77+#else
78+#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_RISING
79+#endif
80+
81+#define IFXMIPS_LED_SPEED IFXMIPS_LED_8HZ
82+
83+#define IFXMIPS_LED_GPIO_PORT 0
84+
85+#define IFXMIPS_MAX_LED 24
86+
87+struct ifxmips_led {
88+ struct led_classdev cdev;
89+ u8 bit;
90+};
91+
92+void ifxmips_led_set(unsigned int led)
93+{
94+ led &= 0xffffff;
95+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
96+}
97+EXPORT_SYMBOL(ifxmips_led_set);
98+
99+void ifxmips_led_clear(unsigned int led)
100+{
101+ led = ~(led & 0xffffff);
102+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
103+}
104+EXPORT_SYMBOL(ifxmips_led_clear);
105+
106+void ifxmips_led_blink_set(unsigned int led)
107+{
108+ led &= 0xffffff;
109+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
110+}
111+EXPORT_SYMBOL(ifxmips_led_blink_set);
112+
113+void ifxmips_led_blink_clear(unsigned int led)
114+{
115+ led = ~(led & 0xffffff);
116+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
117+}
118+EXPORT_SYMBOL(ifxmips_led_blink_clear);
119+
120+static void ifxmips_ledapi_set(struct led_classdev *led_cdev,
121+ enum led_brightness value)
122+{
123+ struct ifxmips_led *led_dev =
124+ container_of(led_cdev, struct ifxmips_led, cdev);
125+
126+ if (value)
127+ ifxmips_led_set(1 << led_dev->bit);
128+ else
129+ ifxmips_led_clear(1 << led_dev->bit);
130+}
131+
132+void ifxmips_led_setup_gpio(void)
133+{
134+ int i = 0;
135+
136+ /* leds are controlled via a shift register
137+ we need to setup pins SH,D,ST (4,5,6) to make it work */
138+ for (i = 4; i < 7; i++) {
139+ ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
140+ ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
141+ ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
142+ ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
143+ }
144+}
145+
146+static int ifxmips_led_probe(struct platform_device *dev)
147+{
148+ int i = 0;
149+
150+ ifxmips_led_setup_gpio();
151+
152+ ifxmips_w32(0, IFXMIPS_LED_AR);
153+ ifxmips_w32(0, IFXMIPS_LED_CPU0);
154+ ifxmips_w32(0, IFXMIPS_LED_CPU1);
155+ ifxmips_w32(LED_CON0_SWU, IFXMIPS_LED_CON0);
156+ ifxmips_w32(0, IFXMIPS_LED_CON1);
157+
158+ /* setup the clock edge that the shift register is triggered on */
159+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK,
160+ IFXMIPS_LED_CON0);
161+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE,
162+ IFXMIPS_LED_CON0);
163+
164+ /* per default leds 15-0 are set */
165+ ifxmips_w32(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
166+
167+ /* leds are update periodically by the FPID */
168+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK,
169+ IFXMIPS_LED_CON1);
170+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI,
171+ IFXMIPS_LED_CON1);
172+
173+ /* set led update speed */
174+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK,
175+ IFXMIPS_LED_CON1);
176+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED,
177+ IFXMIPS_LED_CON1);
178+
179+ /* adsl 0 and 1 leds are updated by the arc */
180+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC,
181+ IFXMIPS_LED_CON0);
182+
183+ /* per default, the leds are turned on */
184+ ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
185+
186+ for (i = 0; i < IFXMIPS_MAX_LED; i++) {
187+ struct ifxmips_led *tmp =
188+ kzalloc(sizeof(struct ifxmips_led), GFP_KERNEL);
189+ tmp->cdev.brightness_set = ifxmips_ledapi_set;
190+ tmp->cdev.name = kmalloc(sizeof("ifxmips:led:00"), GFP_KERNEL);
191+ sprintf((char *)tmp->cdev.name, "ifxmips:led:%02d", i);
192+ tmp->cdev.default_trigger = NULL;
193+ tmp->bit = i;
194+ led_classdev_register(&dev->dev, &tmp->cdev);
195+ }
196+
197+ return 0;
198+}
199+
200+static int ifxmips_led_remove(struct platform_device *pdev)
201+{
202+ return 0;
203+}
204+
205+static struct platform_driver ifxmips_led_driver = {
206+ .probe = ifxmips_led_probe,
207+ .remove = ifxmips_led_remove,
208+ .driver = {
209+ .name = DRVNAME,
210+ .owner = THIS_MODULE,
211+ },
212+};
213+
214+int __init ifxmips_led_init(void)
215+{
216+ int ret = platform_driver_register(&ifxmips_led_driver);
217+ if (ret)
218+ printk(KERN_INFO
219+ "ifxmips_led: Error registering platfom driver!");
220+
221+ return ret;
222+}
223+
224+void __exit ifxmips_led_exit(void)
225+{
226+ platform_driver_unregister(&ifxmips_led_driver);
227+}
228+
229+module_init(ifxmips_led_init);
230+module_exit(ifxmips_led_exit);
231

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