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-rw-r--r--drivers/video/backlight/Kconfig11
-rw-r--r--drivers/video/backlight/Makefile2
-rw-r--r--drivers/video/backlight/corgi_bl.c148
-rw-r--r--drivers/video/backlight/generic_bl.c147
4 files changed, 152 insertions, 156 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 7ee2313ed6b8..72facb9eb7db 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -123,17 +123,14 @@ config BACKLIGHT_ATMEL_PWM
123 To compile this driver as a module, choose M here: the module will be 123 To compile this driver as a module, choose M here: the module will be
124 called atmel-pwm-bl. 124 called atmel-pwm-bl.
125 125
126config BACKLIGHT_CORGI 126config BACKLIGHT_GENERIC
127 tristate "Generic (aka Sharp Corgi) Backlight Driver (DEPRECATED)" 127 tristate "Generic (aka Sharp Corgi) Backlight Driver"
128 depends on BACKLIGHT_CLASS_DEVICE 128 depends on BACKLIGHT_CLASS_DEVICE
129 default n 129 default y
130 help 130 help
131 Say y to enable the generic platform backlight driver previously 131 Say y to enable the generic platform backlight driver previously
132 known as the Corgi backlight driver. If you have a Sharp Zaurus 132 known as the Corgi backlight driver. If you have a Sharp Zaurus
133 SL-C7xx, SL-Cxx00 or SL-6000x say y. Most users can say n. 133 SL-C7xx, SL-Cxx00 or SL-6000x say y.
134
135 Note: this driver is marked as deprecated, try enable SPI and
136 use the new corgi_lcd driver with integrated backlight control
137 134
138config BACKLIGHT_LOCOMO 135config BACKLIGHT_LOCOMO
139 tristate "Sharp LOCOMO LCD/Backlight Driver" 136 tristate "Sharp LOCOMO LCD/Backlight Driver"
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 103427de6703..363b3cb2f01b 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -11,7 +11,7 @@ obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
11 11
12obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o 12obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
13obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o 13obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
14obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o 14obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.o
15obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o 15obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
16obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o 16obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
17obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o 17obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
diff --git a/drivers/video/backlight/corgi_bl.c b/drivers/video/backlight/corgi_bl.c
deleted file mode 100644
index c6abf51ee3e0..000000000000
--- a/drivers/video/backlight/corgi_bl.c
+++ /dev/null
@@ -1,148 +0,0 @@
1/*
2 * Backlight Driver for Sharp Zaurus Handhelds (various models)
3 *
4 * Copyright (c) 2004-2006 Richard Purdie
5 *
6 * Based on Sharp's 2.4 Backlight Driver
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/platform_device.h>
18#include <linux/mutex.h>
19#include <linux/fb.h>
20#include <linux/backlight.h>
21
22static int corgibl_intensity;
23static struct backlight_properties corgibl_data;
24static struct backlight_device *corgi_backlight_device;
25static struct generic_bl_info *bl_machinfo;
26
27/* Flag to signal when the battery is low */
28#define CORGIBL_BATTLOW BL_CORE_DRIVER1
29
30static int corgibl_send_intensity(struct backlight_device *bd)
31{
32 int intensity = bd->props.brightness;
33
34 if (bd->props.power != FB_BLANK_UNBLANK)
35 intensity = 0;
36 if (bd->props.state & BL_CORE_FBBLANK)
37 intensity = 0;
38 if (bd->props.state & BL_CORE_SUSPENDED)
39 intensity = 0;
40 if (bd->props.state & CORGIBL_BATTLOW)
41 intensity &= bl_machinfo->limit_mask;
42
43 bl_machinfo->set_bl_intensity(intensity);
44
45 corgibl_intensity = intensity;
46
47 if (bl_machinfo->kick_battery)
48 bl_machinfo->kick_battery();
49
50 return 0;
51}
52
53static int corgibl_get_intensity(struct backlight_device *bd)
54{
55 return corgibl_intensity;
56}
57
58/*
59 * Called when the battery is low to limit the backlight intensity.
60 * If limit==0 clear any limit, otherwise limit the intensity
61 */
62void corgibl_limit_intensity(int limit)
63{
64 struct backlight_device *bd = corgi_backlight_device;
65
66 mutex_lock(&bd->ops_lock);
67 if (limit)
68 bd->props.state |= CORGIBL_BATTLOW;
69 else
70 bd->props.state &= ~CORGIBL_BATTLOW;
71 backlight_update_status(corgi_backlight_device);
72 mutex_unlock(&bd->ops_lock);
73}
74EXPORT_SYMBOL(corgibl_limit_intensity);
75
76
77static struct backlight_ops corgibl_ops = {
78 .options = BL_CORE_SUSPENDRESUME,
79 .get_brightness = corgibl_get_intensity,
80 .update_status = corgibl_send_intensity,
81};
82
83static int corgibl_probe(struct platform_device *pdev)
84{
85 struct generic_bl_info *machinfo = pdev->dev.platform_data;
86 const char *name = "generic-bl";
87
88 bl_machinfo = machinfo;
89 if (!machinfo->limit_mask)
90 machinfo->limit_mask = -1;
91
92 if (machinfo->name)
93 name = machinfo->name;
94
95 corgi_backlight_device = backlight_device_register (name,
96 &pdev->dev, NULL, &corgibl_ops);
97 if (IS_ERR (corgi_backlight_device))
98 return PTR_ERR (corgi_backlight_device);
99
100 platform_set_drvdata(pdev, corgi_backlight_device);
101
102 corgi_backlight_device->props.max_brightness = machinfo->max_intensity;
103 corgi_backlight_device->props.power = FB_BLANK_UNBLANK;
104 corgi_backlight_device->props.brightness = machinfo->default_intensity;
105 backlight_update_status(corgi_backlight_device);
106
107 printk("Corgi Backlight Driver Initialized.\n");
108 return 0;
109}
110
111static int corgibl_remove(struct platform_device *pdev)
112{
113 struct backlight_device *bd = platform_get_drvdata(pdev);
114
115 corgibl_data.power = 0;
116 corgibl_data.brightness = 0;
117 backlight_update_status(bd);
118
119 backlight_device_unregister(bd);
120
121 printk("Corgi Backlight Driver Unloaded\n");
122 return 0;
123}
124
125static struct platform_driver corgibl_driver = {
126 .probe = corgibl_probe,
127 .remove = corgibl_remove,
128 .driver = {
129 .name = "generic-bl",
130 },
131};
132
133static int __init corgibl_init(void)
134{
135 return platform_driver_register(&corgibl_driver);
136}
137
138static void __exit corgibl_exit(void)
139{
140 platform_driver_unregister(&corgibl_driver);
141}
142
143module_init(corgibl_init);
144module_exit(corgibl_exit);
145
146MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
147MODULE_DESCRIPTION("Corgi Backlight Driver");
148MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c
new file mode 100644
index 000000000000..6d27f62fdcd0
--- /dev/null
+++ b/drivers/video/backlight/generic_bl.c
@@ -0,0 +1,147 @@
1/*
2 * Generic Backlight Driver
3 *
4 * Copyright (c) 2004-2008 Richard Purdie
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/platform_device.h>
16#include <linux/mutex.h>
17#include <linux/fb.h>
18#include <linux/backlight.h>
19
20static int genericbl_intensity;
21static struct backlight_device *generic_backlight_device;
22static struct generic_bl_info *bl_machinfo;
23
24/* Flag to signal when the battery is low */
25#define GENERICBL_BATTLOW BL_CORE_DRIVER1
26
27static int genericbl_send_intensity(struct backlight_device *bd)
28{
29 int intensity = bd->props.brightness;
30
31 if (bd->props.power != FB_BLANK_UNBLANK)
32 intensity = 0;
33 if (bd->props.state & BL_CORE_FBBLANK)
34 intensity = 0;
35 if (bd->props.state & BL_CORE_SUSPENDED)
36 intensity = 0;
37 if (bd->props.state & GENERICBL_BATTLOW)
38 intensity &= bl_machinfo->limit_mask;
39
40 bl_machinfo->set_bl_intensity(intensity);
41
42 genericbl_intensity = intensity;
43
44 if (bl_machinfo->kick_battery)
45 bl_machinfo->kick_battery();
46
47 return 0;
48}
49
50static int genericbl_get_intensity(struct backlight_device *bd)
51{
52 return genericbl_intensity;
53}
54
55/*
56 * Called when the battery is low to limit the backlight intensity.
57 * If limit==0 clear any limit, otherwise limit the intensity
58 */
59void corgibl_limit_intensity(int limit)
60{
61 struct backlight_device *bd = generic_backlight_device;
62
63 mutex_lock(&bd->ops_lock);
64 if (limit)
65 bd->props.state |= GENERICBL_BATTLOW;
66 else
67 bd->props.state &= ~GENERICBL_BATTLOW;
68 backlight_update_status(generic_backlight_device);
69 mutex_unlock(&bd->ops_lock);
70}
71EXPORT_SYMBOL(corgibl_limit_intensity);
72
73static struct backlight_ops genericbl_ops = {
74 .options = BL_CORE_SUSPENDRESUME,
75 .get_brightness = genericbl_get_intensity,
76 .update_status = genericbl_send_intensity,
77};
78
79static int genericbl_probe(struct platform_device *pdev)
80{
81 struct generic_bl_info *machinfo = pdev->dev.platform_data;
82 const char *name = "generic-bl";
83 struct backlight_device *bd;
84
85 bl_machinfo = machinfo;
86 if (!machinfo->limit_mask)
87 machinfo->limit_mask = -1;
88
89 if (machinfo->name)
90 name = machinfo->name;
91
92 bd = backlight_device_register (name,
93 &pdev->dev, NULL, &genericbl_ops);
94 if (IS_ERR (bd))
95 return PTR_ERR (bd);
96
97 platform_set_drvdata(pdev, bd);
98
99 bd->props.max_brightness = machinfo->max_intensity;
100 bd->props.power = FB_BLANK_UNBLANK;
101 bd->props.brightness = machinfo->default_intensity;
102 backlight_update_status(bd);
103
104 generic_backlight_device = bd;
105
106 printk("Generic Backlight Driver Initialized.\n");
107 return 0;
108}
109
110static int genericbl_remove(struct platform_device *pdev)
111{
112 struct backlight_device *bd = platform_get_drvdata(pdev);
113
114 bd->props.power = 0;
115 bd->props.brightness = 0;
116 backlight_update_status(bd);
117
118 backlight_device_unregister(bd);
119
120 printk("Generic Backlight Driver Unloaded\n");
121 return 0;
122}
123
124static struct platform_driver genericbl_driver = {
125 .probe = genericbl_probe,
126 .remove = genericbl_remove,
127 .driver = {
128 .name = "generic-bl",
129 },
130};
131
132static int __init genericbl_init(void)
133{
134 return platform_driver_register(&genericbl_driver);
135}
136
137static void __exit genericbl_exit(void)
138{
139 platform_driver_unregister(&genericbl_driver);
140}
141
142module_init(genericbl_init);
143module_exit(genericbl_exit);
144
145MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
146MODULE_DESCRIPTION("Generic Backlight Driver");
147MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2026-04-05 00:56:07 -0400