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-rw-r--r--drivers/leds/Kconfig9
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-ixp4xx-gpio.c214
3 files changed, 0 insertions, 224 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 922c3df548a5..1dfe5bbc200b 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -39,15 +39,6 @@ config LEDS_SPITZ
39 This option enables support for the LEDs on Sharp Zaurus 39 This option enables support for the LEDs on Sharp Zaurus
40 SL-Cxx00 series (C1000, C3000, C3100). 40 SL-Cxx00 series (C1000, C3000, C3100).
41 41
42config LEDS_IXP4XX
43 tristate "LED Support for GPIO connected LEDs on IXP4XX processors"
44 depends on LEDS_CLASS && ARCH_IXP4XX
45 help
46 This option enables support for the LEDs connected to GPIO
47 outputs of the Intel IXP4XX processors. To be useful the
48 particular board must have LEDs and they must be connected
49 to the GPIO lines. If unsure, say Y.
50
51config LEDS_TOSA 42config LEDS_TOSA
52 tristate "LED Support for the Sharp SL-6000 series" 43 tristate "LED Support for the Sharp SL-6000 series"
53 depends on LEDS_CLASS && PXA_SHARPSL 44 depends on LEDS_CLASS && PXA_SHARPSL
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index e433e2f4e52b..1ec45552b032 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -8,7 +8,6 @@ obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o
8obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o 8obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o
9obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o 9obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
10obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o 10obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o
11obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o
12obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o 11obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o
13obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o 12obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
14obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o 13obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
diff --git a/drivers/leds/leds-ixp4xx-gpio.c b/drivers/leds/leds-ixp4xx-gpio.c
deleted file mode 100644
index 7dcf0b92c460..000000000000
--- a/drivers/leds/leds-ixp4xx-gpio.c
+++ /dev/null
@@ -1,214 +0,0 @@
1/*
2 * IXP4XX GPIO driver LED driver
3 *
4 * Author: John Bowler <jbowler@acm.org>
5 *
6 * Copyright (c) 2006 John Bowler
7 *
8 * Permission is hereby granted, free of charge, to any
9 * person obtaining a copy of this software and associated
10 * documentation files (the "Software"), to deal in the
11 * Software without restriction, including without
12 * limitation the rights to use, copy, modify, merge,
13 * publish, distribute, sublicense, and/or sell copies of
14 * the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the
16 * following conditions:
17 *
18 * The above copyright notice and this permission notice
19 * shall be included in all copies or substantial portions
20 * of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
23 * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
24 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
25 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
26 * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
27 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
30 * OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34#include <linux/kernel.h>
35#include <linux/init.h>
36#include <linux/platform_device.h>
37#include <linux/spinlock.h>
38#include <linux/leds.h>
39#include <asm/arch/hardware.h>
40
41extern spinlock_t gpio_lock;
42
43/* Up to 16 gpio lines are possible. */
44#define GPIO_MAX 16
45static struct ixp4xxgpioled_device {
46 struct led_classdev ancestor;
47 int flags;
48} ixp4xxgpioled_devices[GPIO_MAX];
49
50void ixp4xxgpioled_brightness_set(struct led_classdev *pled,
51 enum led_brightness value)
52{
53 const struct ixp4xxgpioled_device *const ixp4xx_dev =
54 container_of(pled, struct ixp4xxgpioled_device, ancestor);
55 const u32 gpio_pin = ixp4xx_dev - ixp4xxgpioled_devices;
56
57 if (gpio_pin < GPIO_MAX && ixp4xx_dev->ancestor.name != 0) {
58 /* Set or clear the 'gpio_pin' bit according to the style
59 * and the required setting (value > 0 == on)
60 */
61 const int gpio_value =
62 (value > 0) == (ixp4xx_dev->flags != IXP4XX_GPIO_LOW) ?
63 IXP4XX_GPIO_HIGH : IXP4XX_GPIO_LOW;
64
65 {
66 unsigned long flags;
67 spin_lock_irqsave(&gpio_lock, flags);
68 gpio_line_set(gpio_pin, gpio_value);
69 spin_unlock_irqrestore(&gpio_lock, flags);
70 }
71 }
72}
73
74/* LEDs are described in resources, the following iterates over the valid
75 * LED resources.
76 */
77#define for_all_leds(i, pdev) \
78 for (i=0; i<pdev->num_resources; ++i) \
79 if (pdev->resource[i].start < GPIO_MAX && \
80 pdev->resource[i].name != 0)
81
82/* The following applies 'operation' to each LED from the given platform,
83 * the function always returns 0 to allow tail call elimination.
84 */
85static int apply_to_all_leds(struct platform_device *pdev,
86 void (*operation)(struct led_classdev *pled))
87{
88 int i;
89
90 for_all_leds(i, pdev)
91 operation(&ixp4xxgpioled_devices[pdev->resource[i].start].ancestor);
92 return 0;
93}
94
95#ifdef CONFIG_PM
96static int ixp4xxgpioled_suspend(struct platform_device *pdev,
97 pm_message_t state)
98{
99 return apply_to_all_leds(pdev, led_classdev_suspend);
100}
101
102static int ixp4xxgpioled_resume(struct platform_device *pdev)
103{
104 return apply_to_all_leds(pdev, led_classdev_resume);
105}
106#endif
107
108static void ixp4xxgpioled_remove_one_led(struct led_classdev *pled)
109{
110 led_classdev_unregister(pled);
111 pled->name = 0;
112}
113
114static int ixp4xxgpioled_remove(struct platform_device *pdev)
115{
116 return apply_to_all_leds(pdev, ixp4xxgpioled_remove_one_led);
117}
118
119static int ixp4xxgpioled_probe(struct platform_device *pdev)
120{
121 /* The board level has to tell the driver where the
122 * LEDs are connected - there is no way to find out
123 * electrically. It must also say whether the GPIO
124 * lines are active high or active low.
125 *
126 * To do this read the num_resources (the number of
127 * LEDs) and the struct resource (the data for each
128 * LED). The name comes from the resource, and it
129 * isn't copied.
130 */
131 int i;
132
133 for_all_leds(i, pdev) {
134 const u8 gpio_pin = pdev->resource[i].start;
135 int rc;
136
137 if (ixp4xxgpioled_devices[gpio_pin].ancestor.name == 0) {
138 unsigned long flags;
139
140 spin_lock_irqsave(&gpio_lock, flags);
141 gpio_line_config(gpio_pin, IXP4XX_GPIO_OUT);
142 /* The config can, apparently, reset the state,
143 * I suspect the gpio line may be an input and
144 * the config may cause the line to be latched,
145 * so the setting depends on how the LED is
146 * connected to the line (which affects how it
147 * floats if not driven).
148 */
149 gpio_line_set(gpio_pin, IXP4XX_GPIO_HIGH);
150 spin_unlock_irqrestore(&gpio_lock, flags);
151
152 ixp4xxgpioled_devices[gpio_pin].flags =
153 pdev->resource[i].flags & IORESOURCE_BITS;
154
155 ixp4xxgpioled_devices[gpio_pin].ancestor.name =
156 pdev->resource[i].name;
157
158 /* This is how a board manufacturer makes the LED
159 * come on on reset - the GPIO line will be high, so
160 * make the LED light when the line is low...
161 */
162 if (ixp4xxgpioled_devices[gpio_pin].flags != IXP4XX_GPIO_LOW)
163 ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 100;
164 else
165 ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 0;
166
167 ixp4xxgpioled_devices[gpio_pin].ancestor.flags = 0;
168
169 ixp4xxgpioled_devices[gpio_pin].ancestor.brightness_set =
170 ixp4xxgpioled_brightness_set;
171
172 ixp4xxgpioled_devices[gpio_pin].ancestor.default_trigger = 0;
173 }
174
175 rc = led_classdev_register(&pdev->dev,
176 &ixp4xxgpioled_devices[gpio_pin].ancestor);
177 if (rc < 0) {
178 ixp4xxgpioled_devices[gpio_pin].ancestor.name = 0;
179 ixp4xxgpioled_remove(pdev);
180 return rc;
181 }
182 }
183
184 return 0;
185}
186
187static struct platform_driver ixp4xxgpioled_driver = {
188 .probe = ixp4xxgpioled_probe,
189 .remove = ixp4xxgpioled_remove,
190#ifdef CONFIG_PM
191 .suspend = ixp4xxgpioled_suspend,
192 .resume = ixp4xxgpioled_resume,
193#endif
194 .driver = {
195 .name = "IXP4XX-GPIO-LED",
196 },
197};
198
199static int __init ixp4xxgpioled_init(void)
200{
201 return platform_driver_register(&ixp4xxgpioled_driver);
202}
203
204static void __exit ixp4xxgpioled_exit(void)
205{
206 platform_driver_unregister(&ixp4xxgpioled_driver);
207}
208
209module_init(ixp4xxgpioled_init);
210module_exit(ixp4xxgpioled_exit);
211
212MODULE_AUTHOR("John Bowler <jbowler@acm.org>");
213MODULE_DESCRIPTION("IXP4XX GPIO LED driver");
214MODULE_LICENSE("Dual MIT/GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 09:51:40 -0500